US2311606A - Centrifugal separator - Google Patents

Centrifugal separator Download PDF

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US2311606A
US2311606A US321098A US32109840A US2311606A US 2311606 A US2311606 A US 2311606A US 321098 A US321098 A US 321098A US 32109840 A US32109840 A US 32109840A US 2311606 A US2311606 A US 2311606A
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nozzle
centrifuging
liquid
intake
fluid
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Clyde E Bannister
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl

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  • This invention relates to centrifugal separators and especially to devices adapted t Separate a finely divided and suspended solid from a liquid.
  • Its chief objects are to provide an improved apparatus for performing the separating operation while the liquid is in transit, so to speak, as in the case of drilling fluid being drawn from the slush pit by a pump in the drilling of deep wells such as oil Wells; to provide for separating the materials while causing them to move upward, as in the case of the drilling fluid just mentioned; to provide simplicity of construction and of operation; and to provide economy of construction and of operation.
  • Fig. 1 is a vertical axial section, with inner members shown in elevation, of an apparatus embodying my invention in its preferred form.
  • Fig. 2 is a section on line 2-2 of Fig. l.
  • Fig. 3 is a section on line 3-3 of Fig. 1.
  • Fig. 4 is a fragmentary elevation of the lower end portion of the apparatus.
  • Fig. 5 is a vertical middle section of a modification.
  • I0 is a slush pit such as is employed in the drilling of -oil wells, the liquid therein having its level at I l.
  • the suction line of a pump is shown at I2, supported by means such as a cable I3, and the terminal, vertical pipe section of the suction line has mounted upon its lower end a stationary suction nozzle I4 formed with intake holes I5, I5 and preferably of downwardly tapered form as shown and provided With a bottom end-closure I6 (Figs. 2 and 3).
  • This separator device comprises a shell portion 23 which in spaced relation surrounds the suci tion nozzle I4 and in the region of the latter preferably is tapered downwardly at an angle of taper such that the flow capacity of the annular space between them is about the same at all eleannular space and entering the suction nozzle at various elevations in the upward impelling of the fluid in the annular space.
  • two helico-spiral impeller vanes or ramps 24, 24 which are in the relation of the threads of a double-threaded screw and which are secured throughout their length, at their outer margins, to the shell member 23 and at their inner margins have a preferably sealing fit against the stationary suction nozzle I4.
  • Gaskets 25, 25 may be set in grooves formed in the inner edge faces of the ramps, if found necessary or desirable under any particu lar set of speed and other conditions, although ordinarily a little leakage at that position is not harmful.
  • the ramps 24 terminate at 24a, 24, at diametrically opposite positions for balance of torque and of bearing load, and below the lowerrnost half-turn of each ramp the casing or shell member 23 is cut away as at 26 to permit liquid to be present in front of the mouth of the helico-spiral channels defined by the nozzle, the shell, and the ramps, for a Pitot effect as an assistance to the centrifugal effect for causing the ramps to lift the liquid to their upper ends and there discharge it into the annular space defined by the shell, and the upper end portion of the shell is formed with a plurality of discharge openings 2l, 2 for the outflow from the shell of liquid heavily laden with the solid particles by reason of the centrifugal separation occurring in the upward flow ⁇ of the liquid,
  • a conical apron 23, sloping downward outwardly, is mounted upon the shell member 23 just below the outlet openings 21, for throwing the heavily laden liquid to such distance from the intake nozzle that the solids will largely settle out of it instead of being again drawn into the suction nozzle.
  • the rotor comprising the shell 23 and the ramps 24 being rapidly rotated in the direction of the arrow in Fig. 3 and suction being applied to the pipe I2 and nozzle I4 by the pump, the sand laden water, for example, is caused to How upward between the vanes or ramps 24 both by the Pitot effect of the open mouths of the inter-vane spaces and by the centrifugal-pump effect resulting from the fact that the outlets 2'I are farther from the aXis of rotation than are the said mouths of the inter-vane spaces.
  • the several dimensions of the parts of the apparatus be so correlated with vations excepting allowance for uid leaving the each other and with the speed of rotation that throughout the height of the vanes or ramps there will be a lag, which is to say a relative backward flow, of the liquid in relation to the ramps 24 and the shell member 23, the liquid not attaining the full speed of the rotor even at the tops of the Vanes or ramps, so that there will be a washing upward on the ramps, to the outlets 21, of the sand concentrated in the outer region of the inter-vane spaces.
  • the lower end portion of the suction nozzle I 4 is imperforate to a suicient height to assure centrifuging of the liquid before it reaches the elevation of any of the intake ports l5, so that only water made substantially free from sand by the centrifuging will be drawn into the nozzle.
  • the outletports 27 can be made sumciently small to assure that all of the space between the nozzle and the shell will be at all times full of water, but, rather than to have such impedence of iiow, it is preferable to assure contact of the water with the nozzle throughout the region of the intake apertures primarily by so proportioning the parts that the flow capacity at all positions will be equal excepting an allowance for water taken into the nozzle at positions lower than such position as may be under consideration, so that the intervane spaces will be full of water throughout their cross-sectional areas and entirely to the tops of the vanes.
  • the casing 23a is non-rotating, being xedly supported ⁇ from its upper end, where it is secured as by screws 3G, 30 to a plate 'eil which is clamped between nuts 32, 32 screwed upon the suction pipe lZa.
  • the helico-spiral vanes 24a, Zta, for rotation within the stationary casing 23a are secured to respective brackets or arms 33, preferably of stream-line cross-sectional form, by means such as the screw 3.4., and these arms are secured at their upper ends, as by means of screws 35, 35, to a hubmember which is journaled upon the suction pipe 62a by means or" radial bearings its and a radial-and-thrust bearing Via, and is formed at an intermediate portion with an annular flange 31 which is grooved for the reception of a driving beltI Zia.
  • the casing 23a in its upper portion, is formed with large holes 23h, 23h, for access of water to the forwardly-facing mouths of the inter-vane spaces, the device being suspended so that at least the lower portions of such holes are below the water level.
  • the hub-member 3S and with it the vanes 2lia are driven in such direction that the vanes urge the lwater-and-sand mixture downward while centrifuging it, and downward movement of sand, concentrated against and close to the outer casing 23a is somewhat retarded as to its rotary movement by frictional resistance with relation to the casing, and this enhances the effect of the varies in urging it downward and expelling it at their lower ends, the principle involved being somewhat similar to that by which a sausage machine, -by coaction of the screw and of the inner face of the cylinder of the machine, forces the sausage meat through the rotating apertured cutter discs. I do not wholly limit my claims to downward forcing of the sand in this way.
  • Fig. 5 shows the suction nozzle Ma and the casing 23EL as being downwardly flared, for centrifugal-pump effect, but this flare is less important in this embodiment, with gravity helping to move the sand downward, than it is in the upwardlyimpelling embodiment shown in Fig. l.
  • the ilow-space between the vanes 24a, 2lia preferably is of decreasing cross-section toward the delivery end of the device, to compensate -for iluid dra-wn into the suction nozzle at different positions along its length, so that excessively low pressure of the fluid ⁇ against the suction nozzle, as an incident of centrifugal force, is avoided.
  • the vanes dab may be secured at their inner margins to a very open, frusto-conical skeleton 33 to .prevent them from being excessively sprung by centrifugal force or by theresistance of the fluid.
  • Centrifuging apparatus comprising a fluidintake nozzle leading to an outlet for the lighter one of the substances separated, a non-rotating casing surrounding the same and having an outlet for the other substance, a member mounted between the two for rotation about the nozzle and having a face disposed in screw-thread relation to the axis of rotation and thus adapted in such rotation to impel axially of the assembly a fluid occupying the space between the nozzle and the casing, and means for so rotating said member.
  • Centrifuging apparatus comprising a nonrotating fluid-intake nozzle leading to an outlet for the lighter one of the substances separated, a non-rotating casing surrounding the same and having an outlet for the other substance, a member mounted between the two for rotation about the nozzle and having a face disposed in screwthread relation to the axis of rotation and thus adapted in such rotation to impel axially of the assembly a fluid occupying the space ybetween the nozzle and the casing, and means for so rotating said mem-ber.
  • Centrifuging apparatus comprising a fluidintake nozzle leading to an outlet for the lighter one of the substances separated, a casing surrounding the same and having an outlet for the other substance, a member mounted between the two for rotation about the nozzle and having a face having screw-thread relation to the axis of rotation and thus adapted in such rotation to impel axially of the assembly a iiuid occupying the space between the nozzle and the casing, and means for so rotating said member, the said face being inclined in such direction asV to impel the fluid downward.
  • Centrifuging apparatus comprising a nonrotating suction pipe, a fluid-intake nozzle mounted thereon, means surrounding said nozzle for centrifuging a liquid passing thereinto, and means for supporting the assembly with the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, said centrifuging means comprising a drum having an inlet opening and rotatable conveying means communicating with said inlet opening and constructed and arranged to receive liquid from said surrounding -body of liquid and convey it along said drum to said suction nozzle.
  • Centrifuging apparatus comprising a suction pipe, a fluid-intake nozzle mounted thereon and formed with radially-opening intake apertures, means surrounding said nozzle for centrifuging a liquid passing thereinto, and means for supporting the assembly with the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, the centrifuging means comprising structure which with the nozzle denes a helical flow .passage in communication with said apertures.
  • Centrifuging apparatus comprising a nonrotating suction pipe, a non-rotating nozzle mounted thereon and formed with radiallyopening intake apertures, means surrounding said nozzle for centrifuging a liquid passing thereinto, and means for supporting the assembly with the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, the centrifuging means comprising structure which with the nozzle defines a helical flow passage in communication with said apertures.
  • Centrifuging apparatus comprising a suction pipe, a fluid-intake nozzle mounted thereon and formed with radially-opening intake apertures, means surrounding said nozzle for centrifuging a liquid passing thereinto, and means for supporting the assembly with the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, the nozzle and the centrifuging means dening a helical IloW passage in communication with said apertures and having a fluid receiving mouth Which is forwardly facing with relation to the direction of rotation of the centrifuging means.
  • Centrifuging apparatus comprising a suction pipe, a fluid-intake nozzle mounted thereon and formed With radially-opening intake apertures, means surrounding said nozzle for centriinging a liquid passing thereinto, and means for supporting the assembly With the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, the nozzle and the centrifuging means defining two helical flow passages in communication 'with said apertures and having respective diametrically opposite uid receiving mouths which are forwardly facing with relation to the direction of rotation of the centrifuging means.

Description

"Feb, 16, 1943. c. E. BANNISTER 2,311,606
CENTRIFUGAIJ SELARATOR Filed Feb. 27, 1940 2 Sheets-Sheet 1 "sag l 64M@ y I BY 9 1 g ATTORNEY Feb. 16, 1943. C E, BANNISTER 2,311,606
CENTRIFUGAL SEPARATOR Filed Feb. 27, 1940 2 sheets-sheer 2 ATTORNEY Patented Feb. 16, 1943 UNITED STATES PTENT OFFICE 8 Claims.
This invention relates to centrifugal separators and especially to devices adapted t Separate a finely divided and suspended solid from a liquid.
Its chief objects are to provide an improved apparatus for performing the separating operation while the liquid is in transit, so to speak, as in the case of drilling fluid being drawn from the slush pit by a pump in the drilling of deep wells such as oil Wells; to provide for separating the materials while causing them to move upward, as in the case of the drilling fluid just mentioned; to provide simplicity of construction and of operation; and to provide economy of construction and of operation.
Of the accompanying drawings:
Fig. 1 is a vertical axial section, with inner members shown in elevation, of an apparatus embodying my invention in its preferred form.
Fig. 2 is a section on line 2-2 of Fig. l.
Fig. 3 is a section on line 3-3 of Fig. 1.
Fig. 4 is a fragmentary elevation of the lower end portion of the apparatus.
Fig. 5 is a vertical middle section of a modification.
Referring to the drawings, I0 is a slush pit such as is employed in the drilling of -oil wells, the liquid therein having its level at I l. The suction line of a pump is shown at I2, supported by means such as a cable I3, and the terminal, vertical pipe section of the suction line has mounted upon its lower end a stationary suction nozzle I4 formed with intake holes I5, I5 and preferably of downwardly tapered form as shown and provided With a bottom end-closure I6 (Figs. 2 and 3).
At the upper end of the suction nozzle I4 its edge face, around the pipe section I2, provides a shoulder serving as the support for the lower race of a radial-and-thrust bearing Il which rotatably supports a rotor-head member I8 which also is provided with a vertically extensive radial bearing I9 interposed between it and the pipesection I2. Screwed upon a reduced upper end portion of the rotor-head member I8 is a beltpulley member adapted to be rapidly rotated l by a belt 2I for rotating the rotor-head I8 and a centrifugal separator device which is threaded upon it at 22.
This separator device comprises a shell portion 23 which in spaced relation surrounds the suci tion nozzle I4 and in the region of the latter preferably is tapered downwardly at an angle of taper such that the flow capacity of the annular space between them is about the same at all eleannular space and entering the suction nozzle at various elevations in the upward impelling of the fluid in the annular space.
In this annular space are two helico-spiral impeller vanes or ramps 24, 24 which are in the relation of the threads of a double-threaded screw and which are secured throughout their length, at their outer margins, to the shell member 23 and at their inner margins have a preferably sealing fit against the stationary suction nozzle I4. Gaskets 25, 25 may be set in grooves formed in the inner edge faces of the ramps, if found necessary or desirable under any particu lar set of speed and other conditions, although ordinarily a little leakage at that position is not harmful.
At their lower ends the ramps 24 terminate at 24a, 24, at diametrically opposite positions for balance of torque and of bearing load, and below the lowerrnost half-turn of each ramp the casing or shell member 23 is cut away as at 26 to permit liquid to be present in front of the mouth of the helico-spiral channels defined by the nozzle, the shell, and the ramps, for a Pitot effect as an assistance to the centrifugal effect for causing the ramps to lift the liquid to their upper ends and there discharge it into the annular space defined by the shell, and the upper end portion of the shell is formed with a plurality of discharge openings 2l, 2 for the outflow from the shell of liquid heavily laden with the solid particles by reason of the centrifugal separation occurring in the upward flow `of the liquid,
Preferably a conical apron 23, sloping downward outwardly, is mounted upon the shell member 23 just below the outlet openings 21, for throwing the heavily laden liquid to such distance from the intake nozzle that the solids will largely settle out of it instead of being again drawn into the suction nozzle.
In the operation of the apparatus, the rotor comprising the shell 23 and the ramps 24 being rapidly rotated in the direction of the arrow in Fig. 3 and suction being applied to the pipe I2 and nozzle I4 by the pump, the sand laden water, for example, is caused to How upward between the vanes or ramps 24 both by the Pitot effect of the open mouths of the inter-vane spaces and by the centrifugal-pump effect resulting from the fact that the outlets 2'I are farther from the aXis of rotation than are the said mouths of the inter-vane spaces.
It is desirable that the several dimensions of the parts of the apparatus be so correlated with vations excepting allowance for uid leaving the each other and with the speed of rotation that throughout the height of the vanes or ramps there will be a lag, which is to say a relative backward flow, of the liquid in relation to the ramps 24 and the shell member 23, the liquid not attaining the full speed of the rotor even at the tops of the Vanes or ramps, so that there will be a washing upward on the ramps, to the outlets 21, of the sand concentrated in the outer region of the inter-vane spaces.
Preferably the lower end portion of the suction nozzle I 4 is imperforate to a suicient height to assure centrifuging of the liquid before it reaches the elevation of any of the intake ports l5, so that only water made substantially free from sand by the centrifuging will be drawn into the nozzle.
In order that the highest intake ports I5 of the nozzle may not be opened to the atmosphere by reason of centrifugal force of the water causing it to bank up in the inter-vane spaces, thus leaving the nozzle, the outletports 27 can be made sumciently small to assure that all of the space between the nozzle and the shell will be at all times full of water, but, rather than to have such impedence of iiow, it is preferable to assure contact of the water with the nozzle throughout the region of the intake apertures primarily by so proportioning the parts that the flow capacity at all positions will be equal excepting an allowance for water taken into the nozzle at positions lower than such position as may be under consideration, so that the intervane spaces will be full of water throughout their cross-sectional areas and entirely to the tops of the vanes.
In the modication shown in Fig. 5, the casing 23a is non-rotating, being xedly supported `from its upper end, where it is secured as by screws 3G, 30 to a plate 'eil which is clamped between nuts 32, 32 screwed upon the suction pipe lZa. The helico-spiral vanes 24a, Zta, for rotation within the stationary casing 23a, are secured to respective brackets or arms 33, preferably of stream-line cross-sectional form, by means such as the screw 3.4., and these arms are secured at their upper ends, as by means of screws 35, 35, to a hubmember which is journaled upon the suction pipe 62a by means or" radial bearings its and a radial-and-thrust bearing Via, and is formed at an intermediate portion with an annular flange 31 which is grooved for the reception of a driving beltI Zia.
The casing 23a, in its upper portion, is formed with large holes 23h, 23h, for access of water to the forwardly-facing mouths of the inter-vane spaces, the device being suspended so that at least the lower portions of such holes are below the water level.
In this embodiment the hub-member 3S and with it the vanes 2lia are driven in such direction that the vanes urge the lwater-and-sand mixture downward while centrifuging it, and downward movement of sand, concentrated against and close to the outer casing 23a is somewhat retarded as to its rotary movement by frictional resistance with relation to the casing, and this enhances the effect of the varies in urging it downward and expelling it at their lower ends, the principle involved being somewhat similar to that by which a sausage machine, -by coaction of the screw and of the inner face of the cylinder of the machine, forces the sausage meat through the rotating apertured cutter discs. I do not wholly limit my claims to downward forcing of the sand in this way.
Fig. 5 shows the suction nozzle Ma and the casing 23EL as being downwardly flared, for centrifugal-pump effect, but this flare is less important in this embodiment, with gravity helping to move the sand downward, than it is in the upwardlyimpelling embodiment shown in Fig. l.
In this embodiment of Fig. 5, as well as in that of Fig. 1, the ilow-space between the vanes 24a, 2lia preferably is of decreasing cross-section toward the delivery end of the device, to compensate -for iluid dra-wn into the suction nozzle at different positions along its length, so that excessively low pressure of the fluid `against the suction nozzle, as an incident of centrifugal force, is avoided.
The vanes dab may be secured at their inner margins to a very open, frusto-conical skeleton 33 to .prevent them from being excessively sprung by centrifugal force or by theresistance of the fluid.
It will be manifest that in the operation of this embodiment shown in Fig. 5 the intake water is drawn from the upper part of the body of water, where the sand or silt may have settled out previously, by gravity, to some extent, and that the discharge of water heavily laden with sand is nearer to the bottom of the pit, to which the discharged sand can settle, and it is somewhat distributed by centrifugal force as it leases the lower end of the centrifuging device.
Various other modications are possible within the scope of the invention as deiined by the appended claims.
I claim:
l. Centrifuging apparatus comprising a fluidintake nozzle leading to an outlet for the lighter one of the substances separated, a non-rotating casing surrounding the same and having an outlet for the other substance, a member mounted between the two for rotation about the nozzle and having a face disposed in screw-thread relation to the axis of rotation and thus adapted in such rotation to impel axially of the assembly a fluid occupying the space between the nozzle and the casing, and means for so rotating said member.
2. Centrifuging apparatus comprising a nonrotating fluid-intake nozzle leading to an outlet for the lighter one of the substances separated, a non-rotating casing surrounding the same and having an outlet for the other substance, a member mounted between the two for rotation about the nozzle and having a face disposed in screwthread relation to the axis of rotation and thus adapted in such rotation to impel axially of the assembly a fluid occupying the space ybetween the nozzle and the casing, and means for so rotating said mem-ber.
3. Centrifuging apparatus comprising a fluidintake nozzle leading to an outlet for the lighter one of the substances separated, a casing surrounding the same and having an outlet for the other substance, a member mounted between the two for rotation about the nozzle and having a face having screw-thread relation to the axis of rotation and thus adapted in such rotation to impel axially of the assembly a iiuid occupying the space between the nozzle and the casing, and means for so rotating said member, the said face being inclined in such direction asV to impel the fluid downward.
4. Centrifuging apparatus comprising a nonrotating suction pipe, a fluid-intake nozzle mounted thereon, means surrounding said nozzle for centrifuging a liquid passing thereinto, and means for supporting the assembly with the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, said centrifuging means comprising a drum having an inlet opening and rotatable conveying means communicating with said inlet opening and constructed and arranged to receive liquid from said surrounding -body of liquid and convey it along said drum to said suction nozzle.
5. Centrifuging apparatus comprising a suction pipe, a fluid-intake nozzle mounted thereon and formed with radially-opening intake apertures, means surrounding said nozzle for centrifuging a liquid passing thereinto, and means for supporting the assembly with the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, the centrifuging means comprising structure which with the nozzle denes a helical flow .passage in communication with said apertures.
6. Centrifuging apparatus :comprising a nonrotating suction pipe, a non-rotating nozzle mounted thereon and formed with radiallyopening intake apertures, means surrounding said nozzle for centrifuging a liquid passing thereinto, and means for supporting the assembly with the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, the centrifuging means comprising structure which with the nozzle defines a helical flow passage in communication with said apertures.
7. Centrifuging apparatus comprising a suction pipe, a fluid-intake nozzle mounted thereon and formed with radially-opening intake apertures, means surrounding said nozzle for centrifuging a liquid passing thereinto, and means for supporting the assembly with the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, the nozzle and the centrifuging means dening a helical IloW passage in communication with said apertures and having a fluid receiving mouth Which is forwardly facing with relation to the direction of rotation of the centrifuging means.
8. Centrifuging apparatus comprising a suction pipe, a fluid-intake nozzle mounted thereon and formed With radially-opening intake apertures, means surrounding said nozzle for centriinging a liquid passing thereinto, and means for supporting the assembly With the centrifuging means and the intake portion of the nozzle submerged in a surrounding body of liquid, the nozzle and the centrifuging means defining two helical flow passages in communication 'with said apertures and having respective diametrically opposite uid receiving mouths which are forwardly facing with relation to the direction of rotation of the centrifuging means.
CLYDE E. BANNISTER.
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2889044A (en) * 1955-05-23 1959-06-02 Paul O Tobeler Device to separate minerals by specific weight
US2895669A (en) * 1954-09-13 1959-07-21 Phillips Petroleum Co Mechanical treatment of drilling muds
US3074627A (en) * 1958-09-08 1963-01-22 California Inst Res Found Means for separating particles from fluids
US3199212A (en) * 1959-03-21 1965-08-10 Motures D Aviat Soc Nat D Etud Fluidized particle heat exchange
US3400819A (en) * 1964-09-18 1968-09-10 Mobil Oil Corp Method and apparatus for particle segregation
US4318814A (en) * 1980-01-21 1982-03-09 The Western States Machine Company Continuous centrifugal machine
US4337008A (en) * 1980-09-05 1982-06-29 Kulyabko Valery A Apparatus for fish protection
US4943218A (en) * 1987-09-23 1990-07-24 A. S. T. Automatismi Speciali Termoplastici S.r.l. Granulation chamber for extruders of materials such as plastics
US20010012814A1 (en) * 1999-07-12 2001-08-09 May David F. Motor driven centrifugal filter
US6533713B1 (en) * 1998-08-20 2003-03-18 Alfa Laval Ab Entraining device for a centrifugal separator
US20070051673A1 (en) * 2003-05-15 2007-03-08 Mann & Hummel Gmbh Centrifugal separation apparatus and rotor therefor
US20070193373A1 (en) * 2003-09-29 2007-08-23 Schlumberger Technology Corporation Isokinetic sampling

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895669A (en) * 1954-09-13 1959-07-21 Phillips Petroleum Co Mechanical treatment of drilling muds
US2889044A (en) * 1955-05-23 1959-06-02 Paul O Tobeler Device to separate minerals by specific weight
US3074627A (en) * 1958-09-08 1963-01-22 California Inst Res Found Means for separating particles from fluids
US3199212A (en) * 1959-03-21 1965-08-10 Motures D Aviat Soc Nat D Etud Fluidized particle heat exchange
US3400819A (en) * 1964-09-18 1968-09-10 Mobil Oil Corp Method and apparatus for particle segregation
US4318814A (en) * 1980-01-21 1982-03-09 The Western States Machine Company Continuous centrifugal machine
US4337008A (en) * 1980-09-05 1982-06-29 Kulyabko Valery A Apparatus for fish protection
US4943218A (en) * 1987-09-23 1990-07-24 A. S. T. Automatismi Speciali Termoplastici S.r.l. Granulation chamber for extruders of materials such as plastics
US6533713B1 (en) * 1998-08-20 2003-03-18 Alfa Laval Ab Entraining device for a centrifugal separator
US20010012814A1 (en) * 1999-07-12 2001-08-09 May David F. Motor driven centrifugal filter
US20070051673A1 (en) * 2003-05-15 2007-03-08 Mann & Hummel Gmbh Centrifugal separation apparatus and rotor therefor
US7775963B2 (en) * 2003-05-15 2010-08-17 Mann+Hummel Gmbh Liquid driven centrifugal separation apparatus and open vessel rotor with improved efficiency
US20070193373A1 (en) * 2003-09-29 2007-08-23 Schlumberger Technology Corporation Isokinetic sampling

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