EP0392238A1 - Dispensing facility for media - Google Patents

Dispensing facility for media Download PDF

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Publication number
EP0392238A1
EP0392238A1 EP90105644A EP90105644A EP0392238A1 EP 0392238 A1 EP0392238 A1 EP 0392238A1 EP 90105644 A EP90105644 A EP 90105644A EP 90105644 A EP90105644 A EP 90105644A EP 0392238 A1 EP0392238 A1 EP 0392238A1
Authority
EP
European Patent Office
Prior art keywords
medium
discharge device
mixing chamber
outlet opening
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90105644A
Other languages
German (de)
French (fr)
Other versions
EP0392238B1 (en
Inventor
Karl-Heinz Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Erich Pfeiffer GmbH
Ing Erich Pfeiffer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Erich Pfeiffer GmbH, Ing Erich Pfeiffer GmbH filed Critical Erich Pfeiffer GmbH
Publication of EP0392238A1 publication Critical patent/EP0392238A1/en
Application granted granted Critical
Publication of EP0392238B1 publication Critical patent/EP0392238B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam
    • B05B7/0025—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply
    • B05B7/0031—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns
    • B05B7/0037—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam with a compressed gas supply with disturbing means promoting mixing, e.g. balls, crowns including sieves, porous members or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1087—Combination of liquid and air pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1094—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle having inlet or outlet valves not being actuated by pressure or having no inlet or outlet valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1052—Actuation means
    • B05B11/1053—Actuation means combined with means, other than pressure, for automatically opening a valve during actuation; combined with means for automatically removing closures or covers from the discharge nozzle during actuation

Definitions

  • the invention relates to a discharge device for media, with flow paths which have an outlet channel for the medium leading into an outlet opening.
  • At least one device for influencing the medium in the vicinity of the outlet opening is proposed according to the invention.
  • the invention further relates to a discharge device of the type mentioned, in which the device is a foaming device for foaming the medium.
  • a conveying or foaming gas usually air
  • air is appropriately mixed into the medium so that it is enclosed in cells in the medium, the mixed or foaming medium produced from a unit volume of medium having a much larger volume.
  • the increase in volume can lead to a considerable increase in the discharge pressure, which is not advantageous for all types of media.
  • This also applies to the foamed medium remaining in the flow paths after the end of each discharge process.
  • Media that have a tendency to defoam for example have a very low viscosity, can cause the foam formed to collapse again on the way between the foaming device and the outlet opening, ie the medium and the foaming gas are separated again.
  • the invention has for its object to provide a discharge device of the type mentioned, by the disadvantages of the prior art are avoided and in particular a discharge of processed medium or foam with the characteristics that the medium or the Receives foam during generation in the facility.
  • the medium can be subjected to a mixture or foaming close to the outlet opening, this preparation being the only one or being conceivable at a distance from it, for example in a section lying at an angle thereto
  • Flow paths already have to be prepared or foamed by at least one suitable additional device. Since foam often only fully develops to its optimal foam structure on a stretch of the flow path after leaving the device, it is expedient between the device and the outlet opening therefor a correspondingly short dimensioned foam section or the like. provided, which is formed by a corresponding end portion of the outlet channel.
  • the foaming device advantageously has at least one foaming body through which the medium and the foaming gas are pressed together and thereby mixed with one another in a finely structured manner.
  • the foam body can have a large number of finest passages, which may penetrate it in alternating directions, such as e.g. in the case of a porous filter stone, a sieve, a perforated disc or the like, which also contributes to the mixing by swirling.
  • the arrangement of such a foam body is so expedient that it forms the outlet of the foaming device and a smooth-walled foam section of constant internal width is provided between it and the outlet opening, so that the foam once formed is not further, e.g. turbulence caused at edges is separated again.
  • the foaming body or in particular an additional foaming body can also be provided on the inlet side of the foaming device, so that at least one of the substances to be mixed for foaming, preferably the foaming gas, is digested before being brought together with the other material as a result of being pressed through passages of the type mentioned and can be mixed with this other substance immediately afterwards.
  • the mixing of medium and foaming gas is advantageously carried out within a foaming chamber which expediently has approximately the same width as the channel part following in the direction of flow or only a slightly larger width. Furthermore, it is expedient if the internal width of this foaming chamber is in the order of its longitudinal extent or if it is provided coaxially with the subsequent channel part or the outlet opening. Furthermore, it can be useful for the foaming process if the mixing chamber inside we substantial of any built-in parts is free, so that there are essentially completely free internal cross sections within their shell, which can be penetrated by a single shaft at most.
  • the invention is further proposed to provide at least one inlet for each of the two substances to be mixed with one another in the area of the foaming device or into the mixing chamber, the one or more inputs for the one substance expediently being only essentially radial and the or the Entrances for the other substance are directed essentially exclusively axially, so that the substances are exposed to a very strong turbulence due to the intersecting flow.
  • the respective axial inlet could be directed in countercurrent with respect to the direction of flow in the subsequent channel section, but is expediently rectified.
  • valve axis is expediently at an angle to the central axis of the foaming device, the valve being able to be arranged, for example, within an actuating cap and / or within a pump chamber for the associated substance.
  • a particularly advantageous development of the subject matter of the invention consists in that at least one foaming device is essentially formed by a self-contained structural unit, which as a whole is essentially on the outside of the discharge device, namely e.g. to be mounted on the discharge and / or actuating head.
  • a self-contained structural unit which as a whole is essentially on the outside of the discharge device, namely e.g. to be mounted on the discharge and / or actuating head.
  • the discharge device 1 shown in FIGS. 1 and 2 is designed essentially in accordance with DE-OS 37 22 469 with regard to the design, arrangement and effect of your pumps, to which reference is made here. It has a thrust piston pump 2 with a cap 4 for fastening a cylinder housing 3 to the neck of a reservoir or vessel 5 with a seal 42 interposed. An annular flange 6 of a sleeve 46 which surrounds the cylinder housing 3 and which adjoins the cylinder housing 3 in the region of a cylinder cover 7 via a transverse wall 8 engages in the cap 4.
  • a pump piston 10 and an inner body 11 located therein are slidably mounted as the piston unit 9.
  • the end of the cylinder housing 3 protruding into the vessel 5 forms a cylinder 12 with a piston track 13 for sealing lips at the ends of the pump piston 10.
  • the cylinder 12 forms a pump chamber 14 with the pump piston 10, in which a return spring 20 for the piston unit 9 is arranged.
  • the rear end of the pump piston 10 is provided with a piston shaft 21 passing through the cylinder cover 7 and delimiting an outlet channel 24 with an outlet valve 23 interposed therebetween.
  • the outlet channel 24 leads to a discharge nozzle 25 on a cap-shaped actuation handle 22 at the outer end of the piston shaft 21.
  • An end wall of the inner body 11 opposite the inlet channel 9 forms a valve closing part 26 of the outlet valve 23, the valve seat 27 of which is provided on an associated end wall of the pump piston 10.
  • a stem 28, which serves to open the outlet valve 23, projects from the inner body 11 into the piston stem 21, the portion of which adjoining the pump piston 10 forms an elastically compressible neck 29.
  • an inlet valve 32 is located in the area of the bottom wall 18, the valve body 33 of which is spherical and the valve seat 39 is conical.
  • the handle 22 has a position-fixedly connected to the outer end of the piston shaft 21 and in the starting position to the outer end of the shaft 28 with a small distance opposite driver 40, which takes the shaft 28 with shortening the neck 29 and opens the outlet valve 23.
  • 3 ventilation openings 43 are provided in the jacket of the cylinder housing at the front end of longitudinal channels 44, which are released towards the outside from the rear piston end towards the end of the pump stroke.
  • the media pump but could also be formed by a completely different hand-operated pump type, for example a bellows pump, a diaphragm pump, a balloon pump or the like. It could also be designed in such a way that it pressurizes the medium in the vessel to convey it, reference being made to the European patent application 286 925 for such training.
  • a compressed air pump 50 is provided, which may be structurally separated from the discharge device and connected to it via a flexible hose or the like. connected and can be formed by any type of pump.
  • the compressed air pump 50 is expediently structurally combined with the discharge device 1 or the media pump 2 in the form of a thrust piston pump and can be actuated essentially simultaneously with the same handle 22.
  • the compressed air pump 50 is coaxially immediately adjacent to the outer end of the media pump 2.
  • the compressed air pump 50 has a pump piston 51 which is arranged in a fixed position at the rear end of the cylinder housing 3, a pump cylinder 52, an air inlet valve 53 and an air outlet valve 54 in the pump piston 53, essentially within the handle 22, the cap jacket of the pump cylinder 52 and the associated one Piston raceway 55 for at least one piston lip 56 of the pump piston 51 forms.
  • a radially inner piston lip 57 runs on the outer circumference of the piston shaft 21.
  • the pump piston 51 is fastened with a snap member 58 to a collar-shaped extension 59 or a rear extension of the sleeve 46 and also forms the rear cylinder cover 7.
  • the media pump 2 is vented through the gap between the cap jacket and the sleeve 46.
  • the compressed air pump 50 is also supplied with intake air through this gap.
  • Air passage openings are provided in a bottom wall of the pump piston 51 and can be opened and closed in the manner of a check valve with an annular disk-shaped valve body 60 which is limited by annular beads 61.
  • the outlet valve 54 can be designed as an essentially exclusively check valve controlled by the differential pressure or as a prestressed pressure relief valve which only opens when a predetermined pressure is reached in the pressure chamber 62 and opens the path for the compressed air to the discharge nozzle 25.
  • the outlet valve 54 which lies freely in the pressure chamber 62 and projects freely from the outer cap end wall in the direction of the pump piston 51 between the piston shaft 21 and the pump cylinder 52, is on a projecting sleeve 63 of the handle 22 with a cap 64 forming the valve seat and the valve inlet attached, which receives the ball-shaped valve body 65 between the sleeve 63 and the valve seat in a stop-limited manner and, if appropriate, can receive or form a valve spring for the valve body 65.
  • the outlet valve 54 also serves as a back suction protection so that no liquid can be sucked into the compressed air pump 50.
  • a foaming device 100 is provided for foaming the medium supplied with the media pump 2 by supplying air, which is supplied with the compressed air pump 50 separately from the medium of the foaming device 100.
  • the discharge nozzle 25 or the device 100 has a sleeve-shaped nozzle cap 70 which is inserted from the outside and approximately radially into the jacket of the handle 22 and which projects with one end portion over the outer circumference 77 of the handle 22 and with the other end portion is inserted into a receiving sleeve 73 is.
  • This receiving sleeve 73 is formed by the handle 22, is immediately be adjacent to the inside of the cap face and, with an inner body 72 lying coaxially therein, forms an annular slot for receiving the sleeve-shaped end section of the nozzle cap 70.
  • the inner body 72 is formed in one piece with the receiving sleeve 73 or the handle 22.
  • a sleeve-shaped or cup-shaped insert body 71 is arranged axially to the latter, which is inserted from the rear end into a slightly enlarged bore section of the nozzle cap 70 and between an annular shoulder-shaped end face 78 of the nozzle cap 70 and an end face formed by the end of the inner body 72 76 is fixed axially.
  • the insert body 71 forms a mixing chamber 86 on the inside.
  • the front end wall of the insert body 71 is formed by a foam body 75 which is formed in one piece with it and which, through the finest perforation or porosity for the medium or the compressed air, extends essentially over the entire width of the mixing chamber 86 is permeable.
  • An end channel 81 extends from the foam body 75 to the coaxial outlet opening 80 of the discharge nozzle 25, which has essentially the same width as the mixing chamber 86 over its entire length and the same width in the free end face 79 of the nozzle cap 70 the intended outlet opening 80 forms with its associated end.
  • a channel section 85 of a compressed air channel 90 which is coaxial with the mixing chamber 86, opens, the channel section 85 having essentially the same width as the mixing chamber 86 or the end channel 81.
  • the channel section 85 is connected to the valve chamber of the outlet valve 54 of the compressed air pump 50 via a channel section 89 of smaller width adjoining at an angle.
  • the channel section 85 passing through the inner body 72 forms on the front end face 76 of the inner body 72 approximately the same width as the mixing chamber 86 having air inlet for the mixing chamber 86.
  • At least one approximately radial media inlet 84 is provided in the casing of the insert body 71, which can optionally also open tangentially into the mixing chamber 86, so that one Swirl flow immediately before the air inlet 83 results.
  • the mixing chamber 86 forms a short mixing zone free of inputs.
  • the inlet 84 is provided at the end of a channel section 88 which is annular in cross section and which is delimited on the outer circumference by the inner end of the nozzle cap 70 and on the inner circumference by the inner body 72.
  • the channel section 88 surrounding the channel section 85 is directly connected via a radial channel section 91 lying between the cap end wall and the inner body 72 to the outlet opening or the end of the piston skirt 21, which extends into a sleeve lying adjacent to the inner body 72 and projecting inwards from the cap end face 67 is inserted. Via this sleeve 67, the handle 22 takes the piston unit 9 with it when it is actuated.
  • both pumps 2, 50 start the pump stroke, so that a pressure builds up in both pump chambers 14, 62.
  • the outlet valve 23 opens, which can also only take place at the end of the pump stroke in that the end face 30 of the pump piston 10, offset from the end face 31 of the inner body 11, strikes against the bottom wall 18, so that the Piston shaft 21 is elastically resiliently compressed until it strikes the driver 40.
  • the Aulsassventil 54 opens, the adjustment is expediently provided such that the outlet valve 54 opens just before the outlet valve 23, so that air flows into the mixing chamber 86 before entering it through the or the nozzle-like entrances 84, which are much narrower than the entrance 83, the media flows in.
  • simultaneous opening of the two exhaust valves is also conceivable.
  • the media stream and the compressed air stream are fed separately via separate conduit paths to the mixing chamber 86, where they first meet and are premixed with one another. Immediately afterwards, they are pressed together through the foam body 75, which practically causes a flow restriction, and thereby further mixed. The mixture then leaves the outlet of the foam body 75, so that it can expand accordingly in the end channel 81 and can emerge as a foam stream from the outlet opening 80.
  • the handle 22 is relieved by release, as a result of which the media outlet valve 23 initially closes under the force of the return spring 20, while the compressed air pump 50 or its pump chamber 62 and the outlet valve 54 can be dimensioned and adjusted in this way, that after the media flow to the mixing chamber 86 has ended, a certain volume of air is still pressed into the mixing chamber 86 and the foam body 75 and the end channel 81 are blown free of media residues.
  • the common return spring 20 takes the entire piston unit 9 and the compressed air pump cylinder 52 to the starting position, so that medium is sucked into the pump chamber 14 through an inlet pipe 19 arranged on the inlet channel 19 via the inlet valve 32, while in the Compressed air pump chamber 62 is sucked in air via the inlet valve 53.
  • the nozzle cap 70 and the insert body 71 of the foaming device 100 form a self-contained structural unit, the rear end of the nozzle cap 70 projecting beyond the rear end of the insert body 71.
  • Carrying devices of the same design any form of discharge nozzle 25 are arranged by plugging in and connected to the outlet duct 24 and the compressed air duct 90.
  • different valve configurations for the outlet valve 54 can be provided by plugging onto the sleeve 63. At the end of the pump stroke, the outlet valve 54 engages between the piston lips 56, 57 in the pump piston 51, so that a very space-saving design results.
  • the channel section 85a or the air inlet 83a is also eccentric to the central axis of the mixing chamber 86a, namely directed against and at a distance from the rear sleeve end face of the insert body 71a.
  • the inner body 72a On the circumference of the inner body 72a, mutually opposite, axially parallel channels are provided, which are spaced from the insert body 71a, so that a short input chamber is formed between the latter and the inputs 83a, 84a, into which the medium, for example, enter with swirl can while the compressed air swirls in.
  • the inner body 72a has at its end opposite the mixing chamber 86a at a distance a practically radially inward adjoining the compressed air inlet 83a, for example a hollow cone-shaped straightening surface 92, which is widened towards the inlet chamber or in the direction of the mixing chamber 86a.
  • the outside diameter of the inlet or swirl chamber corresponds to the outside diameter of the inlet set body 71a, which in this case is formed by a sleeve and a separate, disk-shaped foam body 75a, which can be perforated like a sieve.
  • a disk-shaped perforation body 93 in the form of, for example, a porous filter stone, is provided at the entrance of the mixing chamber 86b, directly opposite the leveling surface 92b, so that the air enters the mixing chamber 86b in evenly and finely divided individual flows.
  • the media inlet 84b provided in the casing of the insert body 81b is directed radially inwards, so that the medium hits the individual air streams accordingly before it is pressed with the air through the foam body 95b.
  • the perforation body 93 forms a structural unit inserted into the rear end of the casing with the insert body 71b.
  • the foam body 75c is fastened to the front end of the inner body 72c with a shaft 94 lying approximately in its center, so that a mixing chamber 86c with an annular cross section results, the outer width of which is slightly larger than that of the end channel 81c.
  • the media inlet 84c is directed axially and adjacent to the outer circumference into the mixing chamber 86c, while the compressed air inlet 83c is directed radially into the mixing chamber 68c.
  • the end channel 81c is considerably longer than in the other embodiments, its length corresponding approximately to 6 times its width.
  • the foaming device 100d has an intermediate piece 95 which is inserted with a socket 96 into a cylindrical channel section 91d of the receiving sleeve 73d and which lies essentially outside the outer circumference 77d of the handle 22d and into which a hose-like line 90d for the compressed air opens from below .
  • a separate compressed air source for example a compressed air pump, a compressed air container or the like, so that the discharge device to be actuated with the handle 22d need not have an air pump but only at least one media pump.
  • the channel section 85d forms, with an end section 92d which is slightly enlarged with respect to it and the mixing chamber 86d, the axial compressed air inlet 83d, immediately adjacent to which the media inlet 84d is provided in the manner of a swirl ring groove.
  • the foam body 75d is formed by a sieve disk.
  • the nozzle cap 70d is inserted into the intermediate piece 95, which in this case forms the inner body 72d and surrounds the rear end of the nozzle cap 70d on the outer circumference.
  • the intermediate piece 95e is essentially completely surrounded on the outside, since the sleeve-shaped nozzle body 70e surrounds the part of the intermediate piece 95e lying outside the handle 22e on the outer circumference.
  • the compressed air line 90e is connected radially from above to the nozzle body 70e in such a way that it opens directly into the mixing chamber 86e. While in the embodiment according to FIG. 6 the nozzle axis lies at a distance from the central axis of the connecting piece 96 or the associated channel section 91d parallel to it, in the case of the embodiment according to FIG. 7 it lies coaxially with this channel section 91e.
  • the axial media inlet 84e has a smaller width than the mixing chamber 86e.

Abstract

A dispensing facility (1) to be operated by pressure actuation has on an actuation handle (22) a foaming device (100) which is mounted from outside as an intrinsically enclosed unit by means of a plug-in connection and has in the flow path a foaming body (75) located essentially on the same axis as the dispensing orifice (80). With the aid of two pumps (2,50), to be actuated simultaneously, both a medium and compressed air are forced, after being mixed together, through the foaming body (75) and are foamed until they reach the outlet opening (80) in a final channel (81). As a result, a very good foam quality is achieved with a simple design. <IMAGE>

Description

Die Erfindung betrifft eine Austragvorrichtung für Medien, mit Strömungswegen, die einen in eine Auslaßöffnung führen­den Auslaßkanal für das Medium aufweisen.The invention relates to a discharge device for media, with flow paths which have an outlet channel for the medium leading into an outlet opening.

Zur Erzielung eines für den jeweiligen Verwendungszweck mög­lichst günstigen Austrages des Mediums wird gemäß der Erfin­dung mindestens eine Einrichtung zur Beeinflussung des Medi­ums in Nähe der Auslaßöffnung vorgeschlagen.In order to achieve a discharge of the medium that is as favorable as possible for the respective intended use, at least one device for influencing the medium in the vicinity of the outlet opening is proposed according to the invention.

Die Erfindung betrifft des weiteren eine Austragvorrichtung der genannten Art, bei welcher die Einrichtung eine Schäum­einrichtung zur Aufschäumung des Mediums ist.The invention further relates to a discharge device of the type mentioned, in which the device is a foaming device for foaming the medium.

Um z.B. flüssige Medien gemischt oder als Schaum o.dgl. aus­tragen zu können, wird zweckmäßig dem Medium ein Förder- oder Schäumgas, in der Regel Luft, so untergemischt, daß es zellig in dem Medium eingeschlossen ist, wobei das aus einer Volumeneinheit an Medium erzeugte Misch- oder Schäummedium ein vielfach größeres Volumen aufweist. Erfolgt die Mischung oder Aufschäumung des Mediums relativ weit entfernt von der Auslaßöffnung, so kann die Volumenzunahme zu einer beträcht­lichen Steigerung des Austragdruckes führen, was nicht für alle Arten von Medien vorteilhaft ist. Dies gilt auch hin­sichtlich des nach der Beendigung jedes Austragvorganges in den Strömungswegen verbleibenden, aufgeschäumten Mediums. Medien, die leicht zum Entschäumen neigen, beispielsweise eine sehr geringe Viskosität, aufweisen, können dazu führen, daß der gebildete Schaum auf dem Wege zwischen der Schäum­einrichtung und der Auslaßöffnung wieder zusammenfällt, d.h. daß das Medium und das Schäumgas wieder entmischt werden.For example, to mix liquid media or as a foam or the like. To be able to discharge, a conveying or foaming gas, usually air, is appropriately mixed into the medium so that it is enclosed in cells in the medium, the mixed or foaming medium produced from a unit volume of medium having a much larger volume. If the medium is mixed or foamed relatively far from the outlet opening, the increase in volume can lead to a considerable increase in the discharge pressure, which is not advantageous for all types of media. This also applies to the foamed medium remaining in the flow paths after the end of each discharge process. Media that have a tendency to defoam, for example have a very low viscosity, can cause the foam formed to collapse again on the way between the foaming device and the outlet opening, ie the medium and the foaming gas are separated again.

Der Erfindung liegt die Aufgabe zugrunde, eine Austragvor­richtung der genannten Art zu schaffen, durch die Nachteile des Standes der Technik vermieden werden und die insbeson­dere einen Austrag von aufbereitetem Medium bzw. Schaum mit denjenigen Charakteristika auf einfache Weise ermöglicht, die der das Medium bzw. der Schaum bei der Erzeugung in der Einrichtung erhält.The invention has for its object to provide a discharge device of the type mentioned, by the disadvantages of the prior art are avoided and in particular a discharge of processed medium or foam with the characteristics that the medium or the Receives foam during generation in the facility.

Zur Lösung dieser Aufgabe sind erfindungsgemäß Mittel vorge­sehen, durch welche das Medium nahe benachbart zur Auslaß­öffnung einer Mischung oder Aufschäumung unterzogen werden kann, wobei diese Aufbereitung die einzige sein kann oder es denkbar ist, im Abstand davor, beispielsweise in einem im Winkel dazu liegenden Abschnitt der Strömungswege bereits eine Voraufbereitung bzw. -schäumung durch mindestens eine geeignete weitere Einrichtung vorzunehmen. Da sich Schaum häufig nach Verlassen der Einrichtung noch auf einer Strecke des Strömungsweges erst voll zu seiner optimalen Schaum­struktur entwickelt, ist zweckmäßig zwischen der Einrichtung und der Auslaßöffnung hierfür eine entsprechend kurz bemes­sene Schäumstrecke o.dgl. vorgesehen, die durch einen ent­sprechenden Endabschnitt des Auslaßkanales gebildet ist.To achieve this object, means are provided according to the invention by means of which the medium can be subjected to a mixture or foaming close to the outlet opening, this preparation being the only one or being conceivable at a distance from it, for example in a section lying at an angle thereto Flow paths already have to be prepared or foamed by at least one suitable additional device. Since foam often only fully develops to its optimal foam structure on a stretch of the flow path after leaving the device, it is expedient between the device and the outlet opening therefor a correspondingly short dimensioned foam section or the like. provided, which is formed by a corresponding end portion of the outlet channel.

Die Schäumeinrichtung weist vorteilhaft wenigstens einen Schäumkörper auf, durch welchen das Medium sowie das Schäum­gas gemeinsam hindurchgepreßt und dadurch feinststrukturiert miteinander vermischt werden. Hierfür kann der Schäumkörper eine Vielzahl feinster, ihn ggf. in wechselnden Richtungen durchsetzender Durchlässe aufweisen, wie das z.B. bei einem porösen Filterstein, einem Sieb, einer Lochscheibe o.dgl der Fall ist, die auch durch Verwirbelung zur Vermischung beiträgt. Insbesondere ist die Anordnung eines solchen Schäumkörpers so zweckmäßig, daß er den Auslaß der Schäum­einrichtung bildet und zwischen ihm und der Auslaßöffnung eine glattwandige Schäumstrecke konstanter Innenweite vorge­sehen ist, so daß der einmal gebildete Schaum nicht durch weitere, z.B. an Kanten verursachte Wirbelung wieder ent­mischt wird. Der Schäumkörper oder insbesondere ein zusätz­licher Schäumkörper kann aber auch an der Einlaßseite der Schäumeinrichtung vorgesehen sein, so daß zumindest einer der zur Schäumung zu vermischenden Stoffe, vorzugsweise das Schäumgas, bereits vor dem Zusammenführen mit dem anderen Stoff infolge des Durchpressens durch Durchlässe der genann­ten Art aufgeschlossen wird und unmittelbar danach mit die­sem anderen Stoff vermischt werden kann.The foaming device advantageously has at least one foaming body through which the medium and the foaming gas are pressed together and thereby mixed with one another in a finely structured manner. For this purpose, the foam body can have a large number of finest passages, which may penetrate it in alternating directions, such as e.g. in the case of a porous filter stone, a sieve, a perforated disc or the like, which also contributes to the mixing by swirling. In particular, the arrangement of such a foam body is so expedient that it forms the outlet of the foaming device and a smooth-walled foam section of constant internal width is provided between it and the outlet opening, so that the foam once formed is not further, e.g. turbulence caused at edges is separated again. The foaming body or in particular an additional foaming body can also be provided on the inlet side of the foaming device, so that at least one of the substances to be mixed for foaming, preferably the foaming gas, is digested before being brought together with the other material as a result of being pressed through passages of the type mentioned and can be mixed with this other substance immediately afterwards.

Die Vermischung von Medium und Schäumgas erfolgt vorteilhaft innerhalb einer Schäumkammer, die zweckmäßig etwa gleiche Weite wie der in Strömungsrichtung nachfolgende Kanalteil oder nur geringfügig größere Weite aufweist. Ferner ist es zweckmäßig, wenn die Innenweite dieser Schäumkammer in der Größenordnung ihrer Längserstreckung liegt bzw. wenn sie achsgleich zu dem nachfolgenden Kanalteil bzw. der Auslaß­öffnung vorgesehen ist. Weiterhin kann es für den Schäumvor­gang zweckmäßig sein, wenn die Mischkammer im Innern im we­ sentlichen von jeglichen Einbauteilen frei ist, so daß sich innerhalb ihres Mantels im wesentlichen vollständig freie Innenquerschnitte ergeben, die allenfalls von einem einzigen Schaft durchsetzt sein können.The mixing of medium and foaming gas is advantageously carried out within a foaming chamber which expediently has approximately the same width as the channel part following in the direction of flow or only a slightly larger width. Furthermore, it is expedient if the internal width of this foaming chamber is in the order of its longitudinal extent or if it is provided coaxially with the subsequent channel part or the outlet opening. Furthermore, it can be useful for the foaming process if the mixing chamber inside we substantial of any built-in parts is free, so that there are essentially completely free internal cross sections within their shell, which can be penetrated by a single shaft at most.

Gemäß der Erfindung wird des weiteren vorgeschlagen, für jeden der beiden miteinander zu vermischenden Stoffe im Be­reich der Schäumeinrichtung bzw. in die Mischkammer mündend jeweils mindestens einen Eingang vorzusehen, wobei der oder die Eingänge für den einen Stoff zweckmäßig ausschließlich im wesentlichen radial und der oder die Eingänge für den anderen Stoff im wesentlichen ausschließlich axial gerichtet sind, so daß die Stoffe durch kreuzende Strömung einer sehr starken Verwirbelung ausgesetzt sind. Der jeweilige axiale Eingang könnte zwar im Hinblick auf die Strömungsrichtung im nachfolgenden Kanalabschnitt im Gegenstrom gerichtet sein, ist jedoch zweckmäßig gleichgerichtet.According to the invention, it is further proposed to provide at least one inlet for each of the two substances to be mixed with one another in the area of the foaming device or into the mixing chamber, the one or more inputs for the one substance expediently being only essentially radial and the or the Entrances for the other substance are directed essentially exclusively axially, so that the substances are exposed to a very strong turbulence due to the intersecting flow. The respective axial inlet could be directed in countercurrent with respect to the direction of flow in the subsequent channel section, but is expediently rectified.

Soll der eine oder andere der miteinander zu vermischenden Stoffe vor deren Zusammenführen im Druck erhöht werden, so ist hierfür zweckmäßig für den jeweiligen Stoff ein ent­sprechendes Ventil vorgesehen, das erst nach Erreichen des gewünschten Druckes öffnet und jeweils ausschließlich für den zugehörigen Stoff vorgesehen ist bzw. nur im Strömungs­weg dieses Stoffes liegt. Damit dieses Ventil nicht über eine mechanische oder ähnliche Steuerung gesteuert werden muß, sondern druckabhängig arbeitet, kann es in vorteilhaf­ter Weise als Überdruckventil ausgebildet sein. Zur Erzie­lung einer räumlich günstigen Anordnung liegt die Ventil­achse zweckmäßig im Winkel zur Mittelachse der Schäumein­richtung, wobei das Ventil z.B. innerhalb einer Betätigungs­kappe und/oder innerhalb einer Pumpenkammer für den zugehö­rigen Stoff angeordnet sein kann.If one or the other of the substances to be mixed with one another are to be increased in pressure before they are brought together, a corresponding valve is expediently provided for the respective substance, which valve opens only after the desired pressure has been reached and is only intended for the associated substance or only lies in the flow path of this substance. So that this valve does not have to be controlled by a mechanical or similar control, but rather works in a pressure-dependent manner, it can advantageously be designed as a pressure relief valve. To achieve a spatially advantageous arrangement, the valve axis is expediently at an angle to the central axis of the foaming device, the valve being able to be arranged, for example, within an actuating cap and / or within a pump chamber for the associated substance.

Eine besonders vorteilhafte Weiterbildung des Erfindungsge­genstandes besteht darin, daß wenigstens eine Schäumein­richtung im wesentlichen durch eine in sich geschlossene Baueinheit gebildet ist, die als Ganzes im wesentlichen von außen an der Austragvorrichtung, nämlich z.B. an deren Aus­trag- und/oder Betätigungskopf, zu montieren ist. Dadurch können ansonsten im wesentlichen baugleiche Austragvorrich­tungen in einfacher Weise je nach den Erfordernissen mit unterschiedlichen Einrichtungen bestückt werden. Z.B. kann diese Einrichtung zur Beeinflussung des Mediums lediglich durch Einstecken, Einschrauben, Einsprengen, Einpressen, Einkleben o.dgl. befestigt werden.A particularly advantageous development of the subject matter of the invention consists in that at least one foaming device is essentially formed by a self-contained structural unit, which as a whole is essentially on the outside of the discharge device, namely e.g. to be mounted on the discharge and / or actuating head. As a result, otherwise essentially identical discharge devices can be easily equipped with different devices depending on the requirements. E.g. can this device for influencing the medium only by inserting, screwing, snapping, pressing, gluing or the like. be attached.

Es ist zwar denkbar, das Schäumgas und/oder das Medium je­weils von einer von der Austragvorrichtung gesonderten, ggf. zur Förderung unter Druck stehenden Quelle beispielsweise über einen Schlauch oder eine ähnliche Leitung zuzuführen, jedoch ist es besonders vorteilhaft, wenn die Austragvor­richtung zur Förderung mindestens eines, insbesondere beider zu vermischender Stoffe ausgebildet ist. Zu diesem Zweck kann die Austragvorrichtung für mindestens einen, insbeson­dere alle Stoffe jeweils eine Pumpe aufweisen. Hinsichtlich weiterer Merkmale und Wirkungen einer solchen Austragvor­richtung wird hiermit auf die DE-OSen 37 22 469 und 37 22 470 verwiesen. Der Strömungsweg für einen der zu ver­mischenden Stoffe, insbesondere für die Druckluft, kann da­bei zwischen der Druckluftpumpe und der Schäumeinrichtung von Ventilen auch völlig frei sein, so daß der sich aufgrund der mehr oder weniger kräftigen Betätigung der Druckluft­pumpe ergebende Luftdruck unmittelbar bestimmt, mit welchem Druck die Luft in die Schäumeinrichtung gelangt. Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei einer Ausführungsform der Erfin­ dung und auf anderen Gebieten verwirklicht sein und vorteil­hafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. Ausführungs­beispiele der Erfindung sind in den Zeichnungen dargestellt und werden im Folgenden näher erläutert. In den Zeichnungen zeigen:

  • Fig. 1 eine erfindungsgemäße Austragvorrichtung im Axialschnitt,
  • Fig. 2 einen Ausschnitt der Fig. 1 in vergrößerter Darstellung und
  • Fig. 3 bis 7 weitere Ausführungsbeispiele von Schäum­einrichtungen im Schnitt.
Although it is conceivable to supply the foaming gas and / or the medium in each case from a source separate from the discharge device, which may be under pressure for conveyance, for example via a hose or a similar line, it is particularly advantageous if the discharge device for conveyance is at least one, in particular both substances to be mixed is formed. For this purpose, the discharge device can have a pump for at least one, in particular all substances. With regard to further features and effects of such a discharge device, reference is hereby made to DE-OSes 37 22 469 and 37 22 470. The flow path for one of the substances to be mixed, in particular for the compressed air, can also be completely free between the compressed air pump and the foaming device of valves, so that the air pressure resulting from the more or less vigorous actuation of the compressed air pump directly determines the pressure the air gets into the foaming device. These and further features of preferred developments of the invention are evident from the claims and also from the description and the drawings, the individual features individually or in groups in the form of sub-combinations in one embodiment of the invention tion and in other areas and can be advantageous and protectable versions for which protection is claimed here. Embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:
  • 1 shows a discharge device according to the invention in axial section,
  • Fig. 2 shows a detail of FIG. 1 in an enlarged view and
  • 3 to 7 further exemplary embodiments of foaming devices in section.

Die in den Figuren 1 und 2 dargestellte Austragvorrichtung 1 ist hinsichtlich der Ausbildung, Anordnung bzw. Wirkung Ihrer Pumpen im wesentlichen entsprechend der DE-OS 37 22 469 ausgebildet, auf die hier Bezug genommen wird. Sie weist eine Schubkolbenpumpe 2 mit einer Kappe 4 zur Befesti­gung eines Zylindergehäuses 3 am Hals eines Speichers bzw. Gefäßes 5 unter Zwischenlage einer Dichtung 42 auf. In die Kappe 4 greift ein Ringflansch 6 einer das Zylindergehäuse 3 umgebenden und im Bereich einer Zylinderabdeckung 7 über eine Querwand 8 an das Zylindergehäuse 3 anschließenden Man­schette 46 ein.The discharge device 1 shown in FIGS. 1 and 2 is designed essentially in accordance with DE-OS 37 22 469 with regard to the design, arrangement and effect of your pumps, to which reference is made here. It has a thrust piston pump 2 with a cap 4 for fastening a cylinder housing 3 to the neck of a reservoir or vessel 5 with a seal 42 interposed. An annular flange 6 of a sleeve 46 which surrounds the cylinder housing 3 and which adjoins the cylinder housing 3 in the region of a cylinder cover 7 via a transverse wall 8 engages in the cap 4.

Im Zylindergehäuse 3 ist als Kolbeneinheit 9 ein Pumpkolben 10 und ein darin liegender Innenkörper 11 verschiebbar gela­gert. Das in das Gefäß 5 ragende Ende des Zylindergehäuses 3 bildet einen Zylinder 12 mit einer Kolbenlaufbahn 13 für Dichtlippen an den Enden des Pumpkolbens 10. In den Zylinder 12 mündet ein Einlaßkanal 19, der von der Bodenwand 18 ab­steht.In the cylinder housing 3, a pump piston 10 and an inner body 11 located therein are slidably mounted as the piston unit 9. The end of the cylinder housing 3 protruding into the vessel 5 forms a cylinder 12 with a piston track 13 for sealing lips at the ends of the pump piston 10. An inlet channel 19, which projects from the bottom wall 18, opens into the cylinder 12.

Der Zylinder 12 bildet mit dem Pumpkolben 10 eine Pumpen­kammer 14, in welcher eine Rückstellfeder 20 für die Kol­beneinheit 9 angeordnet ist.The cylinder 12 forms a pump chamber 14 with the pump piston 10, in which a return spring 20 for the piston unit 9 is arranged.

Das hintere Ende des Pumpkolbens 10 ist mit einem die Zylin­derabdeckung 7 durchsetzenden Kolbenschaft 21 versehen, der einen Auslaßkanal 24 mit zwischengeschaltetem Auslaßventil 23 begrenzt. Der Auslaßkanal 24 führt zu einer Austragdüse 25 an einer kappenförmigen Betätigungs-Handhabe 22 am äuße­ren Ende des Kolbenschaftes 21.The rear end of the pump piston 10 is provided with a piston shaft 21 passing through the cylinder cover 7 and delimiting an outlet channel 24 with an outlet valve 23 interposed therebetween. The outlet channel 24 leads to a discharge nozzle 25 on a cap-shaped actuation handle 22 at the outer end of the piston shaft 21.

Eine dem Einlaßkanal 9 gegenüberliegende Stirnwand des In­nenkörpers 11 bildet einen Ventilschließteil 26 des Auslaß­ventiles 23, dessen Ventilsitz 27 an einer zugehörigen Stirnwand des Pumpkolbens 10 vorgesehen ist. Von dem Innen­körper 11 ragt ein der Öffnung des Auslaßventiles 23 dienen­der Schaft 28 in den Kolbenschaft 21, dessen an den Pumpkol­ben 10 anschließender Abschnitt einen elastisch stauchbaren Hals 29 bildet.An end wall of the inner body 11 opposite the inlet channel 9 forms a valve closing part 26 of the outlet valve 23, the valve seat 27 of which is provided on an associated end wall of the pump piston 10. A stem 28, which serves to open the outlet valve 23, projects from the inner body 11 into the piston stem 21, the portion of which adjoining the pump piston 10 forms an elastically compressible neck 29.

Beim Niederdrücken der Handhabe 22 wird das Auslaßventil 23 ab einem bestimmten Druck geöffnet. Zur Füllung der Pumpen­kammer 14 beim Rückhub öffnet ein im Bereich der Bodenwand 18 liegendes Einlaßventil 32, dessen Ventilkörper 33 kugel­förmig und dessen Ventilsitz 39 konisch ist.When the handle 22 is depressed, the outlet valve 23 is opened above a certain pressure. To fill the pump chamber 14 during the return stroke, an inlet valve 32 is located in the area of the bottom wall 18, the valve body 33 of which is spherical and the valve seat 39 is conical.

Die Handhabe 22 weist einen lagefest mit dem äußeren Ende des Kolbenschaftes 21 verbundenen und in Ausgangslage dem äußeren Ende des Schaftes 28 mit geringem Abstand gegen­überliegenden Mitnehmer 40 auf, der unter Verkürzung des Halses 29 den Schaft 28 mitnimmt und das Auslaßventil 23 öffnet. Zur wegabhängig ventilgesteuerten Belüftung der Schubkolbenpumpe 2 sind im Mantel des Zylindergehäuses 3 Belüftungsöffnungen 43 am vorderen Ende von Längskanälen 44 vorgesehen, welche gegen Ende des Pumphubes vom hinteren Kolbenende nach außen freigegeben werden. Die Medienpumpe könnte aber auch durch einen ganz anderen handbetätigbaren Pumpentyp, beispielsweise eine Balgpumpe, eine Membranpumpe, eine Ballonpumpe o.dgl ., gebildet sein. Auch könnte sie so ausgebildet sein, daß sie zur Förderung das Medium im Gefäß unter Druck setzt, wobei für eine solche Ausbildung auf die europäische Patentanmeldung 286 925 Bezug genommen wird.The handle 22 has a position-fixedly connected to the outer end of the piston shaft 21 and in the starting position to the outer end of the shaft 28 with a small distance opposite driver 40, which takes the shaft 28 with shortening the neck 29 and opens the outlet valve 23. For path-dependent valve-controlled ventilation of the thrust piston pump 2, 3 ventilation openings 43 are provided in the jacket of the cylinder housing at the front end of longitudinal channels 44, which are released towards the outside from the rear piston end towards the end of the pump stroke. The media pump but could also be formed by a completely different hand-operated pump type, for example a bellows pump, a diaphragm pump, a balloon pump or the like. It could also be designed in such a way that it pressurizes the medium in the vessel to convey it, reference being made to the European patent application 286 925 for such training.

Zusätzlich zur Medienpumpe 2 ist eine Druckluftpumpe 50 vor­gesehen, die ggf. baulich von der Austragvorrichtung ge­trennt und mit dieser über einen flexiblen Schlauch o.dgl. verbunden sowie durch einen beliebigen Pumpentyp gebildet sein kann. Zweckmäßig ist die Druckluftpumpe 50 in Form einer Schubkolbenpumpe baulich mit der Austragvorrichtung 1 bzw. der Medienpumpe 2 vereint und im wesentlichen simultan mit derselben Handhabe 22 zu betätigen. Die Druckluftpumpe 50 liegt gleichachsig unmittelbar benachbart zum äußeren Ende der Medienpumpe 2.In addition to the media pump 2, a compressed air pump 50 is provided, which may be structurally separated from the discharge device and connected to it via a flexible hose or the like. connected and can be formed by any type of pump. The compressed air pump 50 is expediently structurally combined with the discharge device 1 or the media pump 2 in the form of a thrust piston pump and can be actuated essentially simultaneously with the same handle 22. The compressed air pump 50 is coaxially immediately adjacent to the outer end of the media pump 2.

Die Druckluftpumpe 50 weist einen am hinteren Ende des Zy­lindergehäuses 3 lagefest angeordneten Pumpkolben 51, einen Pumpenzylinder 52, im Pumpkolben 53 ein Luft-Einlaßventil 53 und ein Luft-Auslaßventil 54 im wesentlichen innerhalb der Handhabe 22 auf, deren Kappenmantel den Pumpenzylinder 52 sowie die zugehörige Kolbenlaufbahn 55 für mindestens eine Kolbenlippe 56 des Pumpkolbens 51 bildet. Eine radial innere Kolbenlippe 57 läuft am Außenumfang des Kolbenschaftes 21.The compressed air pump 50 has a pump piston 51 which is arranged in a fixed position at the rear end of the cylinder housing 3, a pump cylinder 52, an air inlet valve 53 and an air outlet valve 54 in the pump piston 53, essentially within the handle 22, the cap jacket of the pump cylinder 52 and the associated one Piston raceway 55 for at least one piston lip 56 of the pump piston 51 forms. A radially inner piston lip 57 runs on the outer circumference of the piston shaft 21.

Der Pumpkolben 51 ist mit einem Schnappglied 58 an einem kragenförmigen Ansatz 59 bzw. einer hinteren Verlängerung der Manschette 46 befestigt und bildet auch die hintere Zy­linderabdeckung 7. Die Belüftung der Medienpumpe 2 erfolgt durch den Spalt zwischen dem Kappenmantel und der Manschette 46.The pump piston 51 is fastened with a snap member 58 to a collar-shaped extension 59 or a rear extension of the sleeve 46 and also forms the rear cylinder cover 7. The media pump 2 is vented through the gap between the cap jacket and the sleeve 46.

Auch die Versorgung der Druckluftpumpe 50 mit Ansaugluft erfolgt durch diesen Spalt. In einer Bodenwand des Pumpkol­bens 51 sind Luftdurchtrittsöffnungen vorgesehen, die mit einem ringscheibenförmigen, durch Ringwulste 61 anschlagbe­grenzten Ventilkörper 60 nach Art eines Rückschlagventiles geöffnet und geschlossen werden können.The compressed air pump 50 is also supplied with intake air through this gap. Air passage openings are provided in a bottom wall of the pump piston 51 and can be opened and closed in the manner of a check valve with an annular disk-shaped valve body 60 which is limited by annular beads 61.

Das Auslaßventil 54 kann als im wesentlichen ausschließlich vom Differenzdruck gesteuertes Rückschlagventil oder als vorgespanntes Überdruckventil ausgebildet sein, das erst bei Erreichen eines vorbestimmten Überdruckes in der Druckkammer 62 öffnet und den Weg für die Druckluft zur Austragdüse 25 freigibt. Das in der Druckkammer 62 liegende und im wesent­lichen von der äußeren Kappenstirnwand in Richtung zum Pump­kolben 51 frei zwischen dem Kolbenschaft 21 und dem Pumpen­zylinder 52 frei vorstehende Auslaßventil 54 ist an einer abstehenden Muffe 63 der Handhabe 22 mit einer den Ventil­sitz sowie den Ventileingang bildenden Kappe 64 befestigt, die zwischen der Muffe 63 und dem Ventilsitz anschlagbe­grenzt den kugelförmigen Ventilkörper 65 aufnimmt und ggf. eine Ventilfeder für den Ventilkörper 65 aufnehmen bzw. bil­den kann. Das Auslaßventil 54 dient auch als Rücksaugsiche­rung, damit keine Flüssigkeit in die Druckluft-Pumpe 50 ge­saugt werden kann.The outlet valve 54 can be designed as an essentially exclusively check valve controlled by the differential pressure or as a prestressed pressure relief valve which only opens when a predetermined pressure is reached in the pressure chamber 62 and opens the path for the compressed air to the discharge nozzle 25. The outlet valve 54, which lies freely in the pressure chamber 62 and projects freely from the outer cap end wall in the direction of the pump piston 51 between the piston shaft 21 and the pump cylinder 52, is on a projecting sleeve 63 of the handle 22 with a cap 64 forming the valve seat and the valve inlet attached, which receives the ball-shaped valve body 65 between the sleeve 63 and the valve seat in a stop-limited manner and, if appropriate, can receive or form a valve spring for the valve body 65. The outlet valve 54 also serves as a back suction protection so that no liquid can be sucked into the compressed air pump 50.

Im Bereich der Austragdüse 25 ist eine Schäum-Einrichtung 100 zur Aufschäumung des mit der Medienpumpe 2 zugeführten Mediums durch Zuführung von Luft vorgesehen, die mit der Druckluftpumpe 50 gesondert vom Medium der Schäum-Einrich­tung 100 zugeführt wird. Die Austragdüse 25 bzw. die Ein­richtung 100 weist eine von außen und etwa radial in den Mantel der Handhabe 22 eingesetzte, hülsenförmige Düsenkappe 70 auf, die mit einem Endabschnitt über den Außenumfang 77 der Handhabe 22 vorsteht und mit dem anderen Endabschnitt in eine Aufnahmemuffe 73 eingesetzt ist. Diese Aufnahmemuffe 73 ist durch die Handhabe 22 gebildet, liegt unmittelbar be­ nachbart zur Innenseite der Kappenstirnseite und bildet mit einem koaxial in ihr liegenden Innenkörper 72 einen Ring­schlitz für die Aufnahme des hülsenförmigen Endabschnittes der Düsenkappe 70. Der Innenkörper 72 ist einteilig mit der Aufnahmemuffe 73 bzw. der Handhabe 22 ausgebildet.In the area of the discharge nozzle 25, a foaming device 100 is provided for foaming the medium supplied with the media pump 2 by supplying air, which is supplied with the compressed air pump 50 separately from the medium of the foaming device 100. The discharge nozzle 25 or the device 100 has a sleeve-shaped nozzle cap 70 which is inserted from the outside and approximately radially into the jacket of the handle 22 and which projects with one end portion over the outer circumference 77 of the handle 22 and with the other end portion is inserted into a receiving sleeve 73 is. This receiving sleeve 73 is formed by the handle 22, is immediately be adjacent to the inside of the cap face and, with an inner body 72 lying coaxially therein, forms an annular slot for receiving the sleeve-shaped end section of the nozzle cap 70. The inner body 72 is formed in one piece with the receiving sleeve 73 or the handle 22.

Innerhalb der Düsenkappe 70 ist achsgleich zu dieser ein hülsen- oder napfförmiger Einsatzkörper 71 angeordnet, der vom hinteren Ende her in einen geringfügig erweiterten Boh­rungsabschnitt der Düsenkappe 70 eingesteckt und zwischen einer ringschulterförmigen Stirnfläche 78 der Düsenkappe 70 sowie einer durch das Ende des Innenkörpers 72 gebildeten Stirnfläche 76 axial festgelegt ist. Im Innern bildet der Einsatzkörper 71 eine Mischkammer 86. Die vordere Stirnwand des Einsatzkörpers 71 ist durch einen einteilig mit dieser ausgebildeten Schäumkörper 75 gebildet, welcher durch fein­ste Perforierung bzw. Porosität für das Medium bzw. die Druckluft im wesentlichen über die gesamte Weite der Misch­kammer 86 durchlässig ist. Von dem Schäumkörper 75 bis zur gleichachsig liegenden, ins Freie führenden Auslaßöffnung 80 der Austragdüse 25 erstreckt sich ein Endkanal 81, der im wesentlichen über seine gesamte Länge gleiche Weite wie die Mischkammer 86 aufweist und die gleiche weite, in der freien Stirnfläche 79 der Düsenkappe 70 vorgesehene Auslaßöffnung 80 mit seinem zugehörigen Ende bildet.Within the nozzle cap 70, a sleeve-shaped or cup-shaped insert body 71 is arranged axially to the latter, which is inserted from the rear end into a slightly enlarged bore section of the nozzle cap 70 and between an annular shoulder-shaped end face 78 of the nozzle cap 70 and an end face formed by the end of the inner body 72 76 is fixed axially. The insert body 71 forms a mixing chamber 86 on the inside. The front end wall of the insert body 71 is formed by a foam body 75 which is formed in one piece with it and which, through the finest perforation or porosity for the medium or the compressed air, extends essentially over the entire width of the mixing chamber 86 is permeable. An end channel 81 extends from the foam body 75 to the coaxial outlet opening 80 of the discharge nozzle 25, which has essentially the same width as the mixing chamber 86 over its entire length and the same width in the free end face 79 of the nozzle cap 70 the intended outlet opening 80 forms with its associated end.

In das hintere, offene Ende des Einsatzkörpers 71 mündet ein zur Mischkammer 86 achsgleicher Kanalabschnitt 85 eines Druckluftkanales 90, wobei der Kanalabschnitt 85 im wesent­lichen gleiche Weite wie die Mischkammer 86 bzw. der Endka­nal 81 hat. Der Kanalabschnitt 85 ist über einen im Winkel anschließenden Kanalabschnitt 89 kleinerer Weite mit der Ventilkammer des Auslaßventiles 54 der Druckluftpumpe 50 leitungsverbunden. Der den Innenkörper 72 durchsetzende Ka­nal abschnitt 85 bildet an der vorderen Stirnfläche 76 des Innenkörpers 72 einen etwa gleiche Weite wie die Mischkammer 86 aufweisenden Luft-Eingang für die Mischkammer 86. Unmit­telbar benachbart zu diesem Luft-Eingang 83 ist im Mantel des Einsatzkörpers 71 mindestens ein etwa radialer Medien-­Eingang 84 vorgesehen, der ggf. auch tangential in die Mischkammer 86 münden kann, so daß sich eine Drallströmung unmittelbar vor dem Luft-Eingang 83 ergibt. Zwischen den Eingängen 83, 84 und dem Schäumkörper 85 bildet die Misch­kammer 86 eine kurze, von Eingängen freie Mischzone. Der Eingang 84 ist am Ende eines im Querschnitt ringförmigen Kanalabschnittes 88 vorgesehen, welcher am Außenumfang vom inneren Ende der Düsenkappe 70 und am Innenumfang vom Innen­körper 72 begrenzt ist. Der den Kanalabschnitt 85 umgebende Kanalabschnitt 88 ist über einen zwischen der Kappenstirn­wand und dem Innenkörper 72 liegenden radialen Kanalab­schnitt 91 unmittelbar mit der Austrittsöffnung bzw. dem Ende des Kolbenschaftes 21 leitungsverbunden, der in eine benachbart zum Innenkörper 72 liegende, von der Kappenstirn­fläche nach innen abstehende Muffe 67 eingesteckt ist. Über diese Muffe 67 nimmt die Handhabe 22 die Kolbeneinheit 9 bei der Betätigung mit.In the rear, open end of the insert body 71, a channel section 85 of a compressed air channel 90, which is coaxial with the mixing chamber 86, opens, the channel section 85 having essentially the same width as the mixing chamber 86 or the end channel 81. The channel section 85 is connected to the valve chamber of the outlet valve 54 of the compressed air pump 50 via a channel section 89 of smaller width adjoining at an angle. The channel section 85 passing through the inner body 72 forms on the front end face 76 of the inner body 72 approximately the same width as the mixing chamber 86 having air inlet for the mixing chamber 86. Immediately adjacent to this air inlet 83, at least one approximately radial media inlet 84 is provided in the casing of the insert body 71, which can optionally also open tangentially into the mixing chamber 86, so that one Swirl flow immediately before the air inlet 83 results. Between the inputs 83, 84 and the foam body 85, the mixing chamber 86 forms a short mixing zone free of inputs. The inlet 84 is provided at the end of a channel section 88 which is annular in cross section and which is delimited on the outer circumference by the inner end of the nozzle cap 70 and on the inner circumference by the inner body 72. The channel section 88 surrounding the channel section 85 is directly connected via a radial channel section 91 lying between the cap end wall and the inner body 72 to the outlet opening or the end of the piston skirt 21, which extends into a sleeve lying adjacent to the inner body 72 and projecting inwards from the cap end face 67 is inserted. Via this sleeve 67, the handle 22 takes the piston unit 9 with it when it is actuated.

Die beschriebene Austragvorrichtung arbeitet nach folgendem Verfahren:
Durch manuelles Niederdrücken der Handhabe 22 beginnen beide Pumpen 2, 50 den Pumphub, so daß sich in beiden Pumpenkam­mern 14, 62 ein Druck aufbaut. Im weiteren Verlauf der Hub­bewegung öffnet in Abhängig von der Justierung das Auslaß­ventil 23, was auch erst am Ende des Pumphubes dadurch er­folgen kann, daß die gegenüber der Stirnfläche 31 des Innen­körpers 11 vorversetzte Stirnfläche 30 des Pumpkolbens 10 gegen die Bodenwand 18 anschlägt, so daß der Kolbenschaft 21 elastisch rückfedernd gestaucht wird, bis er an den Mitneh­mer 40 anschlägt. Außerdem öffnet das Aulsaßventil 54, wobei die Justierung zweckmäßig so vorgesehen ist, daß das Auslaß­ventil 54 kurz vor dem Auslaßventil 23 öffnet, so daß in die Mischkammer 86 bereits Luft einströmt, bevor in sie über den oder die düsenartigen, gegenüber dem Eingang 83 wesentlich engeren Eingänge 84 das Medien einströmt. Es ist aber auch eine gleichzeitige Öffnung der beiden Auslaßventile denkbar.The discharge device described works according to the following procedure:
By manually depressing the handle 22, both pumps 2, 50 start the pump stroke, so that a pressure builds up in both pump chambers 14, 62. In the further course of the stroke movement, depending on the adjustment, the outlet valve 23 opens, which can also only take place at the end of the pump stroke in that the end face 30 of the pump piston 10, offset from the end face 31 of the inner body 11, strikes against the bottom wall 18, so that the Piston shaft 21 is elastically resiliently compressed until it strikes the driver 40. In addition, the Aulsassventil 54 opens, the adjustment is expediently provided such that the outlet valve 54 opens just before the outlet valve 23, so that air flows into the mixing chamber 86 before entering it through the or the nozzle-like entrances 84, which are much narrower than the entrance 83, the media flows in. However, simultaneous opening of the two exhaust valves is also conceivable.

Der Medienstrom und der Druckluftstrom werden gesondert über getrennte Leitungswege der Mischkammer 86 zugeführt, wo sie erst aufeinander treffen und miteinander vorvermischt wer­den. Sofort anschließend werden sie gemeinsam durch den, praktisch eine Strömungsdrosselung bewirkenden Schäumkörper 75 gepreßt und dadurch weiter vermischt. Danach verläßt das Gemisch den Ausgang des Schäumkörpers 75, so daß es in dem Endkanal 81 entsprechend expandieren und als Schaumstrom aus der Auslaßöffnung 80 austreten kann.The media stream and the compressed air stream are fed separately via separate conduit paths to the mixing chamber 86, where they first meet and are premixed with one another. Immediately afterwards, they are pressed together through the foam body 75, which practically causes a flow restriction, and thereby further mixed. The mixture then leaves the outlet of the foam body 75, so that it can expand accordingly in the end channel 81 and can emerge as a foam stream from the outlet opening 80.

Spätestens nach Erreichen der Pumphub-Endstellung wird die Handhabe 22 durch Freigabe entlastet, wodurch zunächst unter der Kraft der Rückstellfeder 20 das Medien-Auslaßventil 23 schließt, während die Druckluftpumpe 50 bzw. deren Pumpen­kammer 62 und das Auslaßventil 54 so bemessen und justiert sein können, daß nach Beendigung des Medienzuflusses zur Mischkammer 86 noch ein bestimmtes Luftvolumen in die Misch­kammer 86 gepreßt und dadurch der Schäumkörper 75 sowie der Endkanal 81 von Medienresten freigeblasen wird. Nach Schlie­ßen des Auslaßventiles 23 nimmt die gemeinsame Rückstellfe­der 20 die gesamte Kolbeneinheit 9 sowie den Druckluft-Pum­penzylinder 52 zur Ausgangsstellung hin mit, so daß durch ein am Einlaßkanal 19 angeordnetes Steigrohr 47 Medium über das Einlaßventil 32 in die Pumpenkammer 14 nachgesaugt wird, während in die Druckluft-Pumpenkammer 62 über das Einlaßven­til 53 Luft angesaugt wird.At the latest after reaching the pump stroke end position, the handle 22 is relieved by release, as a result of which the media outlet valve 23 initially closes under the force of the return spring 20, while the compressed air pump 50 or its pump chamber 62 and the outlet valve 54 can be dimensioned and adjusted in this way, that after the media flow to the mixing chamber 86 has ended, a certain volume of air is still pressed into the mixing chamber 86 and the foam body 75 and the end channel 81 are blown free of media residues. After closing the outlet valve 23, the common return spring 20 takes the entire piston unit 9 and the compressed air pump cylinder 52 to the starting position, so that medium is sucked into the pump chamber 14 through an inlet pipe 19 arranged on the inlet channel 19 via the inlet valve 32, while in the Compressed air pump chamber 62 is sucked in air via the inlet valve 53.

Die Düsenkappe 70 und der Einsatzkörper 71 der Schäum-Ein­richtung 100 bilden eine in sich geschlossene Baueinheit, wobei das hintere Ende der Düsenkappe 70 über das hintere Ende des Einsatzkörpers 71 vorsteht. Dadurch kann an Aus­ tragvorrichtungen gleicher Bauart jede beliebige Form von Austragdüse 25 durch Einstecken angeordnet sowie mit dem Auslaßkanal 24 und dem Druckluftkanal 90 leitungsverbunden werden. Außerdem können durch Aufstecken auf die Muffe 63 unterschiedliche Ventilausbildungen für das Auslaßventil 54 vorgesehen werden. Am Ende des Pumphubes greift das Auslaß­ventil 54 zwischen den Kolbenlippen 56, 57 in den Pumpkolben 51 ein, so daß sich eine sehr raumsparende Ausbildung er­gibt.The nozzle cap 70 and the insert body 71 of the foaming device 100 form a self-contained structural unit, the rear end of the nozzle cap 70 projecting beyond the rear end of the insert body 71. This can turn off Carrying devices of the same design any form of discharge nozzle 25 are arranged by plugging in and connected to the outlet duct 24 and the compressed air duct 90. In addition, different valve configurations for the outlet valve 54 can be provided by plugging onto the sleeve 63. At the end of the pump stroke, the outlet valve 54 engages between the piston lips 56, 57 in the pump piston 51, so that a very space-saving design results.

In jeder der Figuren 1 bis 7 sind für einander entsprechende Teile die gleichen Bezugszeichen wie in den übrigen Figuren, jedoch mit unterschiedlichen Buchstabenindizes verwendet, weshalb die zugehörigen Beschreibungsteile entsprechend gel­ten. Einzelne Merkmale können unter den verschiedenen Aus­führungsformen ausgetauscht werden.In each of FIGS. 1 to 7, the same reference numerals are used for corresponding parts as in the other figures, but with different letter indices, which is why the associated description parts apply accordingly. Individual features can be exchanged among the different embodiments.

Bei der Ausführungsform nach Fig. 3 liegt auch der Kanal ab­schnitt 85a bzw. der Luft-Eingang 83a exzentrisch zur Mit­telachse der Mischkammer 86a, nämlich gegen die hintere Hül­senstirnfläche des Einsatzkörpers 71a gerichtet und im Ab­stand von dieser. Zu diesem Zweck sind am Umfang des Innen­körpers 72a einander gegenüberliegende, zueinander achs­parallele Kanäle vorgesehen, die im Abstand vom Einsatzkör­per 71 a liegen, so daß zwischen diesem und den Eingängen 83a, 84a eine kurze Eingangskammer gebildet ist, in welche das Medium z.B. mit Drall eintreten kann, während die Druck­luft verwirbelt eintritt. Der Innenkörper 72a weist an sei­nem der Mischkammer 86a mit Abstand gegenüberliegenden Ende eine praktisch radial nach innen an den Druckluft-Eingang 83a anschließende, z.B. hohlkegelförmige Richtfläche 92 auf, die gegen die Eingangskammer bzw. in Richtung zur Mischkam­mer 86a erweitert ist. Der Außendurchmesser der Eingangs- bzw. Drallkammer entspricht dem Außendurchmesser des Ein­ satzkörpers 71a, der in diesem Fall durch eine Hülse und einen gesonderten, scheibenförmigen Schäumkörper 75a gebil­det ist, welcher siebartig perforiert sein kann.In the embodiment according to FIG. 3, the channel section 85a or the air inlet 83a is also eccentric to the central axis of the mixing chamber 86a, namely directed against and at a distance from the rear sleeve end face of the insert body 71a. For this purpose, on the circumference of the inner body 72a, mutually opposite, axially parallel channels are provided, which are spaced from the insert body 71a, so that a short input chamber is formed between the latter and the inputs 83a, 84a, into which the medium, for example, enter with swirl can while the compressed air swirls in. The inner body 72a has at its end opposite the mixing chamber 86a at a distance a practically radially inward adjoining the compressed air inlet 83a, for example a hollow cone-shaped straightening surface 92, which is widened towards the inlet chamber or in the direction of the mixing chamber 86a. The outside diameter of the inlet or swirl chamber corresponds to the outside diameter of the inlet set body 71a, which in this case is formed by a sleeve and a separate, disk-shaped foam body 75a, which can be perforated like a sieve.

Bei der Ausführungsform nach Fig. 4 ist am Eingang der Mischkammer 86b, und zwar unmittelbar der Richtfläche 92b gegenüberliegend, ein scheibenförmiger Perforationskörper 93 in Form beispielsweise eines porösen Filtersteines vorgese­hen, so daß die Luft in gleichmäßig und feinstverteilten Einzelströmen in die Mischkammer 86b eintritt. Der im Mantel des Einsatzkörpers 81b vorgesehene Medien-Eingang 84b liegt in diesem Fall radial nach innen gerichtet, so daß das Me­dium entsprechend auf die Einzelluftströme trifft, bevor es mit der Luft durch den Schäumkörper 95b gepreßt wird. Der Perforationskörper 93 bildet eine in das hintere Ende des Mantels eingesetzte Baueinheit mit dem Einsatzkörper 71b.In the embodiment according to FIG. 4, a disk-shaped perforation body 93 in the form of, for example, a porous filter stone, is provided at the entrance of the mixing chamber 86b, directly opposite the leveling surface 92b, so that the air enters the mixing chamber 86b in evenly and finely divided individual flows. In this case, the media inlet 84b provided in the casing of the insert body 81b is directed radially inwards, so that the medium hits the individual air streams accordingly before it is pressed with the air through the foam body 95b. The perforation body 93 forms a structural unit inserted into the rear end of the casing with the insert body 71b.

Bei der Ausführungsform nach Fig. 5 ist der Schäumkörper 75c mit einem etwa in seinem Zentrum liegenden Schaft 94 am vor­deren Ende des Innenkörpers 72c befestigt, so daß sich eine im Querschnitt ringförmige Mischkammer 86c ergibt, deren Außenweite geringfügig größer als die des Endkanales 81c ist. Bei dieser Ausführungsform ist der Medien-Eingang 84c axial und benachbart zum Außenumfang in die Mischkammer 86c gerichtet, während der Druckluft-Eingang 83c radial in die Mischkammer 68c gerichtet ist. Der Endkanal 81c ist in die­sem Fall wesentlich länger als bei den übrigen Ausführungs­formen, wobei seine Länge etwa dem 6-fachen seiner Weite entspricht.In the embodiment according to FIG. 5, the foam body 75c is fastened to the front end of the inner body 72c with a shaft 94 lying approximately in its center, so that a mixing chamber 86c with an annular cross section results, the outer width of which is slightly larger than that of the end channel 81c. In this embodiment, the media inlet 84c is directed axially and adjacent to the outer circumference into the mixing chamber 86c, while the compressed air inlet 83c is directed radially into the mixing chamber 68c. In this case, the end channel 81c is considerably longer than in the other embodiments, its length corresponding approximately to 6 times its width.

Die Schäumeinrichtung 100d gemäß Fig. 6 weist ein mit einem Stutzen 96 in einen zylindrischen Kanalabschnitt 91d der Aufnahmemuffe 73d eingesetztes Zwischenstück 95 auf, das im wesentlichen außerhalb des Außenumfanges 77d der Handhabe 22d liegt und in das von unten eine schlauchartige Leitung 90d für die Druckluft mündet. Zur Druckluftversorgung ist die Leitung 90d an eine gesonderte Druckluftquelle, z.B. eine Druckluftpumpe, einen Druckluftbehälter o.dgl., anzu­schließen, so daß die mit der Handhabe 22d zu betätigende Austragvorrichtung keine Luftpumpe, sondern lediglich minde­stens eine Medienpumpe aufzuweisen braucht. Der Kanalab­schnitt 85d bildet mit einem gegenüber ihm und der Misch­kammer 86d geringfügig erweiterten Endabschnitt 92d den axi­alen Druckluft-Eingang 83d, unmittelbar benachbart zu wel­chem der Medien-Eingang 84d nach Art einer Drall-Ringnut vorgesehen ist. Der Schäumkörper 75d ist durch eine Sieb­scheibe gebildet. Die Düsenkappe 70d ist in das Zwischen­stück 95 eingesteckt, das in diesem Fall den Innenkörper 72d bildet und das hintere Ende der Düsenkappe 70d am Außenum­fang umgibt.The foaming device 100d according to FIG. 6 has an intermediate piece 95 which is inserted with a socket 96 into a cylindrical channel section 91d of the receiving sleeve 73d and which lies essentially outside the outer circumference 77d of the handle 22d and into which a hose-like line 90d for the compressed air opens from below . For compressed air supply is to connect the line 90d to a separate compressed air source, for example a compressed air pump, a compressed air container or the like, so that the discharge device to be actuated with the handle 22d need not have an air pump but only at least one media pump. The channel section 85d forms, with an end section 92d which is slightly enlarged with respect to it and the mixing chamber 86d, the axial compressed air inlet 83d, immediately adjacent to which the media inlet 84d is provided in the manner of a swirl ring groove. The foam body 75d is formed by a sieve disk. The nozzle cap 70d is inserted into the intermediate piece 95, which in this case forms the inner body 72d and surrounds the rear end of the nozzle cap 70d on the outer circumference.

Bei der Ausführungsform nach Fig. 7 ist das Zwischenstück 95e an der Außenseite im wesentlichen vollständig umgeben, da der hülsenförmige Düsenkörper 70e den außerhalb der Hand­habe 22e liegenden Teil des Zwischenstückes 95e am Außenum­fang umgibt. Die Druckluft-Leitung 90e ist von oben radial an den Düsenkörper 70e so angeschlossen, daß sie direkt in die Mischkammer 86e mündet. Während bei der Ausführungsform nach Fig. 6 die Düsenachse im Abstand zu der zu ihr paralle­len Mittelachse des Stutzens 96 bzw. des zugehörigen Kanal­abschnittes 91d liegt, liegt sie im Falle der Ausführungs­form nach Fig. 7 achsgleich zu diesem Kanalabschnitt 91e. Der axiale Medien-Eingang 84e weist kleinere Weite als die Mischkammer 86e auf.In the embodiment according to FIG. 7, the intermediate piece 95e is essentially completely surrounded on the outside, since the sleeve-shaped nozzle body 70e surrounds the part of the intermediate piece 95e lying outside the handle 22e on the outer circumference. The compressed air line 90e is connected radially from above to the nozzle body 70e in such a way that it opens directly into the mixing chamber 86e. While in the embodiment according to FIG. 6 the nozzle axis lies at a distance from the central axis of the connecting piece 96 or the associated channel section 91d parallel to it, in the case of the embodiment according to FIG. 7 it lies coaxially with this channel section 91e. The axial media inlet 84e has a smaller width than the mixing chamber 86e.

Claims (10)

1. Austragvorrichtung für Medien, mit Strömungswegen, die einen in eine Auslaßöffnung (80) führenden Auslaßkanal (24) für das Medium aufweisen, dadurch gekennzeichnet, daß mindestens eine Einrichtung (100) zur Beeinflussung des Mediums in Nähe der Auslaßöffnung (80) vorgesehen ist.1. Discharge device for media, with flow paths which have an outlet channel (24) leading into an outlet opening (80) for the medium, characterized in that at least one device (100) for influencing the medium is provided in the vicinity of the outlet opening (80) . 2. Austragvorrichtung nach Anspruch 1, dadurch gekenn­zeichnet, daß mindestens eine Einrichtung als Schäum-­Einrichtung (100) zur Aufschäumung des Mediums ausge­bildet ist und daß vorzugsweise eine Schäum-Einrichtung (100) im wesentlichen ausschließlich benachbart zur Auslaßöffnung (80) vorgesehen ist.2. Discharge device according to claim 1, characterized in that at least one device is designed as a foaming device (100) for foaming the medium and that preferably a foaming device (100) is provided essentially exclusively adjacent to the outlet opening (80). 3. Austragvorrichtung nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß einer Einrichtung (100) wenigstens ein Zustrom-Eingang (83) zur Vermischung des Mediums mit einem weiteren Medienstrom, wie Schäumgas, Druck­luft o.dgl., zugeordnet ist, und daß der Zustrom-Ein­ gang (83) vorzugsweise in mindestens eine Mischkammer (86) der Einrichtung (100) mündet, in die mindestens ein gesonderter Medien-Eingang (84) mündet.3. Discharge device according to claim 1 or 2, characterized in that a device (100) is assigned at least one inflow input (83) for mixing the medium with a further media stream, such as foaming gas, compressed air or the like, and that Inflow On aisle (83) preferably opens into at least one mixing chamber (86) of the device (100) into which at least one separate media inlet (84) opens. 4. Austragvorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß eine Einrichtung (100b) mindestens einen in wenigstens einem Strömungs­weg liegenden feinperforierten Körper (75b, 93), insbe­sondere einen Schäumkörper, wie ein Sieb, einen porösen Filterstein oder dgl., aufweist, der vorzugsweise die Mischkammer (86b) wenigstens an einer Auslaß- und/oder einer Einlaßseite begrenzt.4. Discharge device according to one of the preceding claims, characterized in that a device (100b) has at least one finely perforated body (75b, 93) lying in at least one flow path, in particular a foam body, such as a sieve, a porous filter stone or the like. which preferably delimits the mixing chamber (86b) at least on one outlet and / or one inlet side. 5. Austragvorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß eine Mischkammer (86) einer Einrichtung (100) mindestens zwei gesonderte Eingänge (83, 84) für einen Zustrom und das Medium auf­weist und daß vorzugsweise jeweils wenigstens ein Ein­gang (84) etwa radial und wenigstens ein Eingang (83) etwa parallel zur Richtung der aus der Mischkammer (86) austretenden Strömung in die Mischkammer gerichtet ist.5. Discharge device according to one of the preceding claims, characterized in that a mixing chamber (86) of a device (100) has at least two separate inputs (83, 84) for an inflow and the medium and that preferably at least one input (84) each radially and at least one inlet (83) is directed approximately parallel to the direction of the flow emerging from the mixing chamber (86) into the mixing chamber. 6. Austragvorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß eine Mischkammer (86) einer Einrichtung (100) im wesentlichen parallel bzw. achsgleich zur Auslaßöffnung (80) liegt, annähernd gleiche Innenweite wie die Auslaßöffnung (80) aufweist und insbesondere in einem Abstand vor der Auslaßöffnung (80) vorgesehen ist, der etwa dem 2- bis 6-fachen der Innenweite entspricht und daß vorzugsweise zwischen einer Einrichtung (100), insbesondere einem Schäumkör­per (75), und der Auslaßöffnung (80) ein im wesentli­chen glattwandiger Endkanal (81) vorgesehen ist, der insbesondere einschließlich der Auslaßöffnung (80) durchgehend im wesentlichen konstante Innenweite auf­weist.6. Discharge device according to one of the preceding claims, characterized in that a mixing chamber (86) of a device (100) is substantially parallel or coaxially with the outlet opening (80), has approximately the same inner width as the outlet opening (80) and in particular in one Distance in front of the outlet opening (80) is provided, which corresponds approximately to 2 to 6 times the internal width and that preferably between a device (100), in particular a foam body (75), and the outlet opening (80) is a substantially smooth-walled end channel (81) is provided which, in particular including the outlet opening (80), has a substantially constant inner width throughout. 7. Austragvorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß mindestens ein Schäumkörper (75) und/oder wenigstens eine Mischkammer (86) im wesentlichen von mindestens einem gesonderten Einsatzkörper (71) gebildet ist, wobei vorzugsweise die Mischkammer (86) am Umfang von einem Kammermantel be­grenzt ist, der an wenigstens einer Stirnseite einen Schäumkörper (75) und/oder einen Eingang aufweist sowie in eine Bohrung stirnseitig festgelegt eingesetzt ist.7. Discharge device according to one of the preceding claims, characterized in that at least one foam body (75) and / or at least one mixing chamber (86) is essentially formed by at least one separate insert body (71), preferably the mixing chamber (86) on the circumference is delimited by a chamber jacket which has a foam body (75) and / or an entrance on at least one end face and is inserted in a bore on the end face. 8. Austragvorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß eine, insbesondere druckabhängig arbeitende Einrichtung zur Druckaufladung von Zustromgas in Strömungsrichtung vor einer Aufberei­tungszone einer Einrichtung (100) vorgesehen und vor­zugsweise durch ein im Bereich der Einrichtung (100) angeordnetes Überdruckventil (54) im Strömungsweg des Zustromgases gebildet ist.8. Discharge device according to one of the preceding claims, characterized in that a, in particular pressure-dependent device for pressure charging inflow gas in the flow direction in front of a processing zone of a device (100) is provided and preferably by a pressure relief valve (54) arranged in the area of the device (100) is formed in the flow path of the inflow gas. 9. Austragvorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß wenigstens eine Einrichtung (100) für das Medium im wesentlichen durch eine in sich geschlossene Baueinheit gebildet ist, die vorzugsweise über eine insbesondere etwa parallel zum zugehörigen Strömungsweg liegende Steckverbindung an der Austragvorrichtung angeordnet ist und/oder daß eine Einrichtung (100) zur Aufbereitung des Mediums im we­sentlichen im Bereich des Außenumfanges (77) einer Be­tätigungs-Handhabe (22) für die Austragvorrichtung liegt und vorzugsweise die Einrichtung zur Druckaufla­dung in dem Betätigungskopf vorgesehen ist.9. Discharge device according to one of the preceding claims, characterized in that at least one device (100) for the medium is essentially formed by a self-contained structural unit which is preferably arranged on the discharge device via a plug connection, in particular approximately parallel to the associated flow path and / or that a device (100) for processing the medium lies essentially in the region of the outer circumference (77) of an actuating handle (22) for the discharge device and preferably the device for pressure charging is provided in the actuating head. 10. Austragvorrichtung nach einem der vorhergehenden An­sprüche, dadurch gekennzeichnet, daß eine Einrichtung (100) an einer als Betätigungskopf ausgebildeten Hand­habe (22) der Austragvorrichtung angeordnet ist, die vorzugsweise für das Medium eine Medien-Pumpe (2) und/oder für ein Zustromgas eine Druckluft-Pumpe (50) aufweist, wobei insbesondere zwei Pumpen (2, 50) ge­meinsam mit der Handhabe (22) manuell zu betätigen sind und die Einrichtung zur Druckaufladung innerhalb einer Pumpenkammer (62) der Druckluft-Pumpe (50) vorgesehen ist.10. Discharge device according to one of the preceding claims, characterized in that a device (100) on a handle designed as an actuating head (22) of the discharge device is arranged, the preferably has a media pump (2) for the medium and / or a compressed air pump (50) for an inflow gas, two pumps (2, 50) in particular being manually operated together with the handle (22) and the device for Pressure charging within a pump chamber (62) of the compressed air pump (50) is provided.
EP90105644A 1989-04-08 1990-03-24 Dispensing facility for media Expired - Lifetime EP0392238B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911510A DE3911510A1 (en) 1989-04-08 1989-04-08 DISCHARGE DEVICE FOR MEDIA
DE3911510 1989-04-08

Publications (2)

Publication Number Publication Date
EP0392238A1 true EP0392238A1 (en) 1990-10-17
EP0392238B1 EP0392238B1 (en) 1995-01-25

Family

ID=6378212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105644A Expired - Lifetime EP0392238B1 (en) 1989-04-08 1990-03-24 Dispensing facility for media

Country Status (4)

Country Link
EP (1) EP0392238B1 (en)
JP (1) JP3422329B2 (en)
AT (1) ATE117595T1 (en)
DE (2) DE3911510A1 (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0451615A2 (en) * 1990-04-10 1991-10-16 Ing. Erich Pfeiffer GmbH & Co. KG Discharge device for at least one medium
EP0511894A1 (en) * 1991-04-30 1992-11-04 L'oreal Foam dispensing device
WO1995026831A1 (en) * 1994-04-05 1995-10-12 Sprintvest Corporation N.V. Liquid dispenser for dispensing foam
WO1999049769A1 (en) 1998-03-30 1999-10-07 Sprintvest Corporation N.V. Improved liquid dispenser for dispensing foam
WO1999054054A1 (en) * 1998-04-17 1999-10-28 Keltub B.V. Foam spraying device
US6446840B2 (en) 2000-05-18 2002-09-10 Ophardt Product Kg Apparatus for making and dispensing foam
WO2002074441A2 (en) * 2001-03-16 2002-09-26 Unilever Plc Foamer
US6612468B2 (en) 2000-09-15 2003-09-02 Rieke Corporation Dispenser pumps
US7198177B2 (en) 2001-11-12 2007-04-03 Bentfield Europe B.V. Dispenser for dispensing a fluid, housing for such a dispenser, storage holder configured for placement therein and arrangement for the dosed pumping of a fluid from a fluid reservoir
WO2007083206A1 (en) * 2006-01-17 2007-07-26 Taplast Spa Device for the delivery of gas-liquid mixtures
US7303099B2 (en) 2005-04-22 2007-12-04 Gotohti.Com Inc. Stepped pump foam dispenser
EP1916036A1 (en) * 2006-10-23 2008-04-30 Arminak & Associates Foamer pump
WO2009038452A1 (en) 2007-09-17 2009-03-26 Rexam Airspray N.V. Foam dispensing assembly
US7611033B2 (en) 2001-11-12 2009-11-03 Technical Concepts Bentfield B.V. Foam dispenser, housing and storage holder therefor
US7708166B2 (en) 2005-04-22 2010-05-04 Gotohti.Com Bellows dispenser
US7770874B2 (en) 2005-04-22 2010-08-10 Gotohii.com Inc. Foam pump with spring
US7802701B2 (en) 2005-01-14 2010-09-28 Rieke Corporation Up-lock seal for dispenser pump
EP2279795A1 (en) * 2009-07-31 2011-02-02 Rexam Dispensing Systems System for dispensing a fluid product
WO2011012836A1 (en) * 2009-07-29 2011-02-03 Brightwell Dispensers Limited Foam pump
DE10108299B4 (en) * 2000-05-18 2011-03-03 Ophardt Product Kg Device for producing and dispensing foam
US8550307B2 (en) 2011-03-31 2013-10-08 Brightwell Dispensers Limited Dispensing device with a disposable pump
US8807398B2 (en) 2010-04-22 2014-08-19 Sca Hygiene Products Ab Dispenser and liquid container
CN104884174A (en) * 2012-09-03 2015-09-02 旻诺维森公司 Foam dispenser
US9718069B2 (en) 2014-05-12 2017-08-01 Deb Ip Limited Foam pump
EP4338847A1 (en) * 2022-09-13 2024-03-20 Guangdong Neat Packaging Co., Ltd. Spray pump

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8261950B2 (en) 2007-10-22 2012-09-11 Georgia-Pacific Consumer Products Lp Pumping dispenser
JP5646975B2 (en) * 2010-12-07 2014-12-24 花王株式会社 Foam discharge container
US8651328B2 (en) 2011-07-14 2014-02-18 Georgia-Pacific Consumer Products Lp Pumping dispenser shield

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AT270056B (en) * 1964-10-16 1969-04-10 Step Soc Tech Pulverisation Dip tube atomizer
EP0196737A2 (en) * 1985-01-28 1986-10-08 Earl Wright Company Foam dispensing device
DE8712658U1 (en) * 1987-09-19 1987-11-05 Woldemar Wagner Kg, 7730 Villingen-Schwenningen, De
EP0286925A2 (en) * 1987-04-11 1988-10-19 Ing. Erich Pfeiffer GmbH &amp; Co. KG Device for delivery of liquids
DE3722470A1 (en) * 1987-07-08 1989-01-19 Pfeiffer Erich Gmbh & Co Kg HAND-OPERATED DISCHARGE DEVICE FOR MEDIA

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT270056B (en) * 1964-10-16 1969-04-10 Step Soc Tech Pulverisation Dip tube atomizer
EP0196737A2 (en) * 1985-01-28 1986-10-08 Earl Wright Company Foam dispensing device
EP0286925A2 (en) * 1987-04-11 1988-10-19 Ing. Erich Pfeiffer GmbH &amp; Co. KG Device for delivery of liquids
DE3722470A1 (en) * 1987-07-08 1989-01-19 Pfeiffer Erich Gmbh & Co Kg HAND-OPERATED DISCHARGE DEVICE FOR MEDIA
DE8712658U1 (en) * 1987-09-19 1987-11-05 Woldemar Wagner Kg, 7730 Villingen-Schwenningen, De

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0451615A2 (en) * 1990-04-10 1991-10-16 Ing. Erich Pfeiffer GmbH & Co. KG Discharge device for at least one medium
EP0451615B1 (en) * 1990-04-10 1995-08-16 Ing. Erich Pfeiffer GmbH & Co. KG Discharge device for at least one medium
EP0511894A1 (en) * 1991-04-30 1992-11-04 L'oreal Foam dispensing device
FR2676010A1 (en) * 1991-04-30 1992-11-06 Oreal DEVICE FOR DISPENSING FOAM, AND PUSH BUTTON FOR SUCH A DEVICE.
US5289952A (en) * 1991-04-30 1994-03-01 L'oreal Device for dispensing foam, and push-button for a device of this kind
WO1995026831A1 (en) * 1994-04-05 1995-10-12 Sprintvest Corporation N.V. Liquid dispenser for dispensing foam
WO1999049769A1 (en) 1998-03-30 1999-10-07 Sprintvest Corporation N.V. Improved liquid dispenser for dispensing foam
US6082586A (en) * 1998-03-30 2000-07-04 Deb Ip Limited Liquid dispenser for dispensing foam
WO1999054054A1 (en) * 1998-04-17 1999-10-28 Keltub B.V. Foam spraying device
US6547162B1 (en) 1998-04-17 2003-04-15 Keltub B.V. Foam spraying device
CN1105605C (en) * 1998-04-17 2003-04-16 克尔图布公司 Foam spraying device
US6446840B2 (en) 2000-05-18 2002-09-10 Ophardt Product Kg Apparatus for making and dispensing foam
DE10108299B4 (en) * 2000-05-18 2011-03-03 Ophardt Product Kg Device for producing and dispensing foam
US6612468B2 (en) 2000-09-15 2003-09-02 Rieke Corporation Dispenser pumps
WO2002074441A2 (en) * 2001-03-16 2002-09-26 Unilever Plc Foamer
US6536685B2 (en) 2001-03-16 2003-03-25 Unilever Home And Personal Care Usa, Division Of Conopco, Inc. Foamer
WO2002074441A3 (en) * 2001-03-16 2003-09-25 Unilever Plc Foamer
KR100854550B1 (en) * 2001-03-16 2008-08-26 유니레버 엔.브이. Nozzle for dispensing foam and a foam dispenser using the same
US7611033B2 (en) 2001-11-12 2009-11-03 Technical Concepts Bentfield B.V. Foam dispenser, housing and storage holder therefor
US7198177B2 (en) 2001-11-12 2007-04-03 Bentfield Europe B.V. Dispenser for dispensing a fluid, housing for such a dispenser, storage holder configured for placement therein and arrangement for the dosed pumping of a fluid from a fluid reservoir
US7802701B2 (en) 2005-01-14 2010-09-28 Rieke Corporation Up-lock seal for dispenser pump
US7303099B2 (en) 2005-04-22 2007-12-04 Gotohti.Com Inc. Stepped pump foam dispenser
US7708166B2 (en) 2005-04-22 2010-05-04 Gotohti.Com Bellows dispenser
US7770874B2 (en) 2005-04-22 2010-08-10 Gotohii.com Inc. Foam pump with spring
US8474664B2 (en) 2005-04-22 2013-07-02 Gotohti.Com Inc. Foam pump with bellows spring
WO2007083206A1 (en) * 2006-01-17 2007-07-26 Taplast Spa Device for the delivery of gas-liquid mixtures
US9352347B2 (en) 2006-10-23 2016-05-31 Arminak & Associates, Llc Foamer pump
EP1916036A1 (en) * 2006-10-23 2008-04-30 Arminak & Associates Foamer pump
US8225965B2 (en) 2006-10-23 2012-07-24 Arminak & Associates, Llc Foamer pump
WO2009038452A1 (en) 2007-09-17 2009-03-26 Rexam Airspray N.V. Foam dispensing assembly
CN101821014A (en) * 2007-09-17 2010-09-01 雷克扎姆喷雾有限公司 Foam dispensing assembly
WO2011012836A1 (en) * 2009-07-29 2011-02-03 Brightwell Dispensers Limited Foam pump
CN102481591B (en) * 2009-07-29 2015-02-11 布莱特维尔分配器有限公司 Foam pump
CN102481591A (en) * 2009-07-29 2012-05-30 布赖特创新有限公司 Foam pump
AU2010277425B2 (en) * 2009-07-29 2016-03-10 Brightwell Dispensers Limited Foam pump
US8770443B2 (en) 2009-07-29 2014-07-08 Brightwell Dispensers Limited Foam pump
FR2948643A1 (en) * 2009-07-31 2011-02-04 Rexam Dispensing Sys SYSTEM FOR DISPENSING A FLUID PRODUCT
EP2279795A1 (en) * 2009-07-31 2011-02-02 Rexam Dispensing Systems System for dispensing a fluid product
US8807398B2 (en) 2010-04-22 2014-08-19 Sca Hygiene Products Ab Dispenser and liquid container
US8550307B2 (en) 2011-03-31 2013-10-08 Brightwell Dispensers Limited Dispensing device with a disposable pump
CN104884174A (en) * 2012-09-03 2015-09-02 旻诺维森公司 Foam dispenser
US9718069B2 (en) 2014-05-12 2017-08-01 Deb Ip Limited Foam pump
EP4338847A1 (en) * 2022-09-13 2024-03-20 Guangdong Neat Packaging Co., Ltd. Spray pump

Also Published As

Publication number Publication date
JPH0316668A (en) 1991-01-24
JP3422329B2 (en) 2003-06-30
DE59008330D1 (en) 1995-03-09
EP0392238B1 (en) 1995-01-25
ATE117595T1 (en) 1995-02-15
DE3911510A1 (en) 1990-10-11

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