CN104455561B - Positive and negative pressure surface contact liq check valve - Google Patents
Positive and negative pressure surface contact liq check valve Download PDFInfo
- Publication number
- CN104455561B CN104455561B CN201410769835.3A CN201410769835A CN104455561B CN 104455561 B CN104455561 B CN 104455561B CN 201410769835 A CN201410769835 A CN 201410769835A CN 104455561 B CN104455561 B CN 104455561B
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- malleation
- check valve
- film
- positive
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/105—Three-way check or safety valves with two or more closure members
Abstract
The invention discloses a kind of positive and negative pressure surface contact liq check valve, it can be used in quantitatively and orientation infusion set, such as fluid jetting head, binary or multi-component liquid mixing arrangement, quantitative liquid transfer device etc..It includes inlet and liquid outlet, inlet is opened with negative pressure and is connected outside film, negative pressure is opened and is provided with water conservancy diversion annulus inside film, the liquid flow ports being connected with piston/cylinder it is provided with inside water conservancy diversion annulus, it is provided with blast groove type cylinder ring in positive and negative pressure surface contact check valve, being provided with malleation outside blast groove type cylinder ring and open film, be additionally provided with elastic spherical surface body in positive and negative pressure surface contact check valve, the outer surface of elastic spherical surface body is provided with malleation and opens film and position concavo-convex annulus.The present invention uses elastic spherical surface body to combine taper malleation and opens film to ensure to obtain reliable negative pressure and close and malleation is opened, and uses taper negative pressure to open film to combine water conservancy diversion annulus to ensure to obtain reliable negative pressure and open and malleation is closed.
Description
Technical field
The invention belongs to a kind of positive and negative pressure surface contact liq check valve.
Background technology
At present, general employing ball type (without metal spring type) liquid non-return valve or linear contact lay type liquid non-return valve in liquid non-return valve, but the reliability of these check valves is the highest, especially uses in the case of having vibrations in low pressure.The effect orienting sealing, opening when reason is general ball type check valve or linear contact lay type check valve real work is not as Thin Elastic face contact-type check valve, because the latter has the sealing area that contact surface is bigger, and face contact-type check valve to the sensitivity of pressure also greater than the former, be especially suitable under lower negative pressure using.
Summary of the invention
The invention aims to overcome above deficiency, it is provided that a kind of positive and negative pressure surface contact liq check valve.
The purpose of the present invention is achieved through the following technical solutions: a kind of positive and negative pressure surface contact check valve, including inlet and liquid outlet, it is provided with negative pressure inside inlet and opens film, negative pressure is opened and is provided with water conservancy diversion annulus inside film, the liquid flow ports being connected with piston/cylinder it is provided with inside water conservancy diversion annulus, it is provided with blast groove type cylinder ring in positive and negative pressure surface contact check valve, it is provided with malleation outside blast groove type cylinder ring and opens film, the most negatively being additionally provided with elastic spherical surface body in contact check valve, the outer surface of elastic spherical surface body is provided with malleation and opens film and position concavo-convex annulus.
The present invention compared with prior art has the advantage that the present invention uses elastic spherical surface body to combine taper malleation and opens film to ensure to obtain reliable negative pressure and close and malleation is opened, and uses taper negative pressure to open film to combine water conservancy diversion annulus to ensure to obtain reliable negative pressure and open and malleation is closed.
Accompanying drawing illustrates:
Fig. 1 is the profile stretch-out view of the present invention；
Fig. 2 is that positive and negative pressure surface contacts check valve negative pressure force structure figure；
Fig. 3 is that positive and negative pressure surface contacts check valve malleation force structure figure；
Label in figure: 1-inlet, 2-liquid outlet, 3-negative pressure open film, 4-water conservancy diversion annulus, 5-liquid flow ports, 6-blast groove type cylinder ring, 7-malleation open film, 8-elasticity spherical surface body, 9-position concavo-convex annulus.
Detailed description of the invention:
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment is only used for explaining the present invention, is not intended that limiting the scope of the present invention.
As Fig. 1 shows the detailed description of the invention of a kind of just negative contact liq check valve of the present invention, including inlet 1 and liquid outlet 2, it is provided with negative pressure inside inlet 1 and opens film 3, negative pressure is opened and is provided with water conservancy diversion annulus 4 inside film 3, the liquid flow ports 5 being connected with piston/cylinder inner chamber it is provided with inside water conservancy diversion annulus 4, it is provided with blast groove type cylinder ring 6 in positive and negative pressure surface contact check valve, it is provided with malleation outside blast groove type cylinder ring 6 and opens film 7, it is additionally provided with elastic spherical surface body 8 in positive and negative pressure surface contact check valve, the outer surface of elastic spherical surface body 8 is provided with malleation and opens film 7 and position concavo-convex annulus 9.The function of elastic spherical surface body is: when piston remains static, malleation is opened film and is closed by force by elastic spherical surface body, this ensures that the liquid in check valve liquid outlet tube may again return in check valve in no instance, thus reaches the purpose of the unidirectional output of liquid quantitative.Just negative contact liq check valve can be used in quantitatively and orientation infusion set, such as fluid jetting head, binary or multi-component liquid mixing arrangement, quantitative liquid transfer device etc..
The operation principle of positive and negative pressure surface contact liq check valve:
Having negative pressure to produce at liquid flow ports, when the piston in the piston cylinder being the most just connected with this is displaced outwardly, its negative pressure direction is as shown in block arrow black in Fig. 2；This negative pressure is opened on film inclined-plane produced cross force in malleation and is greater than vertical upward force (see figure 2), adds negative pressure and can pull elastic spherical surface body and move down, thus forces malleation to open film and close；And this negative pressure can force the negative pressure in positive and negative pressure surface contact check valve to open film and open, now liquid will be opened between the gap being opened between the contact surface corresponding to film and check valve fixture, through liquid guide flow annulus and liquid flow ports by negative pressure inspiration to cylinder body along the negative pressure in positive and negative pressure surface contact check valve from liquid-inlet；Above step be liquid by liquid inlet through liquid flow ports to the process of the unidirectional input of piston cylinder inner chamber.
When liquid flow ports has malleation, and the piston in the piston cylinder being namely attached thereto moves inward, black block arrow indication in its malleation direction such as Fig. 3；This malleation will force the negative pressure in positive and negative pressure surface contact check valve to open film and close, open on the inner side of film because this malleation can be firstly applied to negative pressure under the guiding of water conservancy diversion annulus, the face forcing it and corresponding fixture is close to so that tunicle is closed at liquid-inlet, and at this moment the liquid in check valve cannot thereby return in liquid storage tank；And this malleation can force the malleation in positive and negative pressure surface contact check valve to open film and open, because this malleation can extrude malleation and open film and move up (see figure 3) to contract and elastic spherical surface body, so that the face that this malleation opens film and its corresponding fixture is separated, at this moment liquid will enter threeway blender along the gap that malleation is opened between film face corresponding thereto through blast groove type annulus.Above step be liquid from piston cylinder inner chamber through liquid flow ports to the process of the unidirectional output liquid of liquid outlet.
Taper surface contact malleation opens film and connected elastic spherical surface body, contact the positive and negative pressure surface that negative pressure opens film and the water conservancy diversion annulus that matches is formed with taper surface and contacts check valve (such as Fig. 1).Their operating characteristic is:
One-way function (such as Fig. 1 and Fig. 2) under negative pressure condition: when having negative pressure at liquid inlet, just has negative pressure in check valve.The taper negative pressure now having retractility open film 1 by under the effect of this negative pressure to contract, it is made to separate with the face corresponding to check valve fixture, a gap will be produced the most between which so that liquid passes through this gap by negative pressure sucking liquid flow ports to piston cylinder inner chamber at liquid-inlet.In order to make the seal of check valve that permanent deformation the most not occur, this negative pressure opens film with an angle to contract, and the angle of its vertical line (see figure 2) between 2-8 degree.And this negative pressure, the taper malleation that can make retractility opens film expansion and elastic spherical surface body stretches downwards, the result of its force action can make malleation open film to oppress tightly on the face of fixture corresponding thereto, reaching the purpose sealed, so liquid at check valve liquid outlet is impossible to return in check valve.This taper malleation is opened film and corresponding face (see Fig. 2 inclined-plane coalition part) and is kept an angle (as shown in Figure 2) with vertical direction position, between this angle is spent 1 to 20, generally use about 8 degree, to ensure when forming negative pressure in cylinder body, cross force on inclined-plane is much larger than vertical upward force, thus ensures that negative pressure forces malleation to open film and is close on corresponding fixture inclined-plane (as shown in Figure 2).In sum, liquid can only enter the inner chamber of piston cylinder at liquid-inlet through liquid flow ports, and the liquid in check valve liquid output pipe definitely can not again return in check valve, because now malleation is opened film and is tightly attached on corresponding fixture face make this passage be closed by suction function.
One-way function (such as Fig. 1 and Fig. 3) under barotropic condition: have malleation at liquid flow ports, will produce malleation in check valve.This malleation can be firstly applied to the negative pressure of retractility under the guiding of guide ring and open on the medial surface of film, thus force negative pressure to open film and be close on the face of corresponding check valve fixture play the effect sealing liquid inlet, its result is that the liquid in check valve can not be by returning at liquid-inlet in liquid storage tank.Here water conservancy diversion annulus plays very important leakproof effect, because it can guide malleation first to act on taper negative pressure opens the inner side of film rather than at its end opening.As at end opening, liquid impulsive force at positive pressure can pry open the joint portion of film and check valve, makes liquid gap between them flow out from liquid inlet, does not reaches the purpose of reliable liquid one-way flowing.Result of the test shows, without this water conservancy diversion circle ring part, when applying malleation, the gap that the liquid in check valve is opened between film and check valve stationary plane by negative pressure sometimes is flowed out from liquid inlet.Also just saying, now the negative pressure in check valve opens film under the effect of malleation, and its closing function is unreliable.And under the effect of this malleation, have the taper malleation of retractility to open film can be squeezed and to contract, this malleation can be oppressed elastic spherical surface body and moved up simultaneously.The result of this dual function can make malleation open film to separate with the face of its corresponding fixture, thus open one gap of formation between the face of film and its corresponding fixture in malleation, make liquid by completing unidirectional output along blast groove type annulus from the liquid outlet of check valve behind this gap.In sum, under the effect of malleation, liquid can only open film from the unidirectional output of the liquid outlet of check valve along malleation after liquid flow ports enters check valve.
The present invention uses elastic spherical surface body to combine taper malleation and opens film to ensure to obtain reliable negative pressure and close and malleation is opened, and uses taper negative pressure to open film to combine water conservancy diversion annulus to ensure to obtain reliable negative pressure and open and malleation is closed.
Claims (1)
1. a positive and negative pressure surface contact liq check valve, it is characterized in that: include inlet (1) and liquid outlet (2), described inlet (1) connects negative pressure and opens film (3) outside, described negative pressure is opened film (3) inner side and is provided with water conservancy diversion annulus (4), described water conservancy diversion annulus (4) inner side is provided with the liquid flow ports (5) being connected with piston/cylinder, it is provided with blast groove type cylinder ring (6) in described positive and negative pressure surface contact check valve, described blast groove type cylinder ring (6) outside is provided with malleation and opens film (7), it is additionally provided with elastic spherical surface body (8) in described positive and negative pressure surface contact check valve, the outer surface of described elastic spherical surface body (8) is provided with malleation and opens film (7) and position concavo-convex annulus (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769835.3A CN104455561B (en) | 2014-12-15 | 2014-12-15 | Positive and negative pressure surface contact liq check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769835.3A CN104455561B (en) | 2014-12-15 | 2014-12-15 | Positive and negative pressure surface contact liq check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455561A CN104455561A (en) | 2015-03-25 |
| CN104455561B true CN104455561B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410769835.3A Expired - Fee Related CN104455561B (en) | 2014-12-15 | 2014-12-15 | Positive and negative pressure surface contact liq check valve |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109695747B (en) * | 2019-01-25 | 2021-01-26 | 京东方科技集团股份有限公司 | Digital logic actuator, digital logic execution method and ink jet printing equipment |
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| US6053364A (en) * | 1995-10-06 | 2000-04-25 | Airspray N.V. | Device for dispensing an air-liquid mixture, in particular foam, and operating unit intended therefor |
| CN1356952A (en) * | 1999-06-23 | 2002-07-03 | 空气喷雾股份有限公司 | Aerosol for dispensing liquid |
| CN201291172Y (en) * | 2008-11-07 | 2009-08-19 | 安徽淮河化工股份有限公司 | Double-component fluid pressurization injection device |
| CN201578144U (en) * | 2009-11-27 | 2010-09-15 | 林添大 | Improved foam pump |
| CN102502062A (en) * | 2011-12-28 | 2012-06-20 | 王雅灿 | Foam pump |
| CN204328078U (en) * | 2014-12-15 | 2015-05-13 | 南通思锐生物科技有限公司 | Positive and negative pressure surface contact liq one-way valve |
-
2014
- 2014-12-15 CN CN201410769835.3A patent/CN104455561B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6053364A (en) * | 1995-10-06 | 2000-04-25 | Airspray N.V. | Device for dispensing an air-liquid mixture, in particular foam, and operating unit intended therefor |
| CN1356952A (en) * | 1999-06-23 | 2002-07-03 | 空气喷雾股份有限公司 | Aerosol for dispensing liquid |
| CN201291172Y (en) * | 2008-11-07 | 2009-08-19 | 安徽淮河化工股份有限公司 | Double-component fluid pressurization injection device |
| CN201578144U (en) * | 2009-11-27 | 2010-09-15 | 林添大 | Improved foam pump |
| CN102502062A (en) * | 2011-12-28 | 2012-06-20 | 王雅灿 | Foam pump |
| CN204328078U (en) * | 2014-12-15 | 2015-05-13 | 南通思锐生物科技有限公司 | Positive and negative pressure surface contact liq one-way valve |
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| CN104455561A (en) | 2015-03-25 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qian Jianguo Inventor after: Qian Qingyuan Inventor after: Wang Yufei Inventor after: Cao Hui Inventor before: Qian Jianguo Inventor before: Wang Yufei Inventor before: Cao Hui |
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| CB03 | Change of inventor or designer information | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20211215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |