US3385437A - Eccentric head hydrocyclone - Google Patents

Eccentric head hydrocyclone Download PDF

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Publication number
US3385437A
US3385437A US444998A US44499865A US3385437A US 3385437 A US3385437 A US 3385437A US 444998 A US444998 A US 444998A US 44499865 A US44499865 A US 44499865A US 3385437 A US3385437 A US 3385437A
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United States
Prior art keywords
chamber
section
separator
ledge
slurry
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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.)
Expired - Lifetime
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US444998A
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English (en)
Inventor
Maurice D Woodruff
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.)
Bauer Brothers Co
Original Assignee
Bauer Brothers Co
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 Bauer Brothers Co filed Critical Bauer Brothers Co
Priority to US444998A priority Critical patent/US3385437A/en
Priority to FI660658A priority patent/FI45475C/fi
Priority to DE19661517889 priority patent/DE1517889A1/de
Priority to GB13780/66A priority patent/GB1090502A/en
Priority to SE04268/66A priority patent/SE327184B/xx
Priority to FR55927A priority patent/FR1474396A/fr
Application granted granted Critical
Publication of US3385437A publication Critical patent/US3385437A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04—Tangential inlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force

Definitions

  • This invention relates to the hydrocyclonic separation of a flowing slurry or the like into accepted and rejected fractions, and particularly to improvements therein achieving greater operating efliciency.
  • the invention has special, though not limited, reference to hydrocyclone separators, used in paper making processes to separate clean, usable fibrous material from a flowing slurry which, in addition to the usable material, contains unwanted heavier particles and dirt.
  • a device of the kind described comprises means defining a separating chamber circular in cross section and open at its opposite ends to define outlets for the respective fractions. Through an inlet at the accepts end the flowing slurry is introduced tangentially into the separating chamber in a manner to progress from one end to the other in a swirling helical motion. The accepts end is located to receive and guide an inner vortex in which is comprised the accepted fraction, the rejected fraction discharging through the opposite or rejects end of the separating chamber.
  • accepts and rejects ends of the separating chamber are considered as providing for overflow and underflow of respective slurry portions. These terms, however, do not denote attitude limitations since the hydrocyclone can be mounted in any position which is convenient from an installation standpoint, the speed of movement of the slurry through the separator making the device operationally independent of gravity.
  • the instant invention has in view the obtaining of a more thorough and precise separation between the acceptable and rejectable fractions in the separating chamber by creating a disturbing influence therein.
  • the effect thereof is to reduce slurry consistency, particularly adjacent to the separator wall and to obviate the tendency of unwanted slurry particles to orbit within the separating chamber in conditions of equilibrium brought about by counteracting hydraulic and centrifugal forces.
  • An object of the invention is to present a generally new and simplified method of achieving more efficient separation in a hydrocyclone.
  • a further object of the invention is to present a method and apparatus in hydrocyclonic separators wherein means are provided exerting a disturbing influence within the separating chamber.
  • Still another object of the invention is to achieve objectives as in the foregoing through means inhering in the structure of the separator.
  • a still further object of the invention is to achieve operating efliciency as described in a separator especially characterized by simplicity of construction and by a useful life which is at least equal to that of standard hydrocylonic separators of the prior art.
  • a further object of the invention is to provide a hydrocyclonic separator possessing the advantageous structural features, the inherent meritorious characteristics and the mode of operation herein mentioned.
  • FIG. 1 is a view in longitudinal section of a hydrocyclonic separator in accordance with one illustrated embodiment of the invention
  • FIG. 2 is a view in cross section, taken substantially along the line 22 of FIG. 1;
  • FIG. 3 is an enlarged detail view of a created ledge in the separator
  • FIG. 4 is a view in cross section, taken substantially along the irregular line 4-4 of FIG. 1;
  • FIG. 5 is a fragmentary view in longitudinal section showing another illustrated form of the invention.
  • the invention is disclosed in a hydrocyclone separator as used especially in the pulp and paper industry to enable high standards of paper cleanliness.
  • the unit operates to separate the slurry into acceptable and rejectable fractions, directing these to respectively different outlets.
  • the highest possible percentage of bark specks, dirt solids, fibre aggregates, shives and the like is excluded from the accepts outlet and directed as a part of the main slurry to the rejects outlet.
  • the percentage of the pulp slurry reporting to the rejects outlet incorporates minor amounts of usable fibres and hence is desirably low.
  • a hydrocyclonic separator comprises a device of unitary construction, as by being made of a plurality of sections bolted or otherwise secured together.
  • a device 10 includes a body section 11 having the shape of a truncated cone, the interior of such body section being hollow to define a separating chamber ⁇ 12 and the opposite ends of such chamber opening through the 'base and apex ends thereof.
  • a head section 13 mounted in generally superposed relation to the base end of section 11.
  • the head section 13 comprises a cylindrical sleeve-like portion 14.
  • the cylindrical portion 14 is formed with a longitudinal through bore 17. Received in the outer end of such bore is an expanded head portion 18 of a nozzle 19. A flange 2 1 on head portion 18 is drawn to a seat on the outer end of the cylindrical portion 14 by an internally threaded nut 22. The arrangement is one to hold 5 the assembly comprising cylindrical portion 14 and nozzle 19 in an assembled position relatively to one another and to the cone section 11. Further comprised in the nozzle 19 is an axial tube portion 23. Inwardly of the head portion 18 the tube 23 projects to a transverse plane defined by the juncture of the base end of the body section 11 and the inner end of the cylindrical sleeve portion 14.
  • the tube 23 projects as an externally threaded connector 24 by which the device 10 is joined to outlet conduit means.
  • the tube 23 is open throughout its length and occupies a position in bore v17 spaced from the wall thereof and defining therewith an annular chamber 25.
  • the chamber 25 overlies and communicates with the separating chamber 12 and may be considered a part thereof.
  • the annular chamber 25 is closed by head portion 18 of the nozzle 19.
  • an inlet 26 communicating through a laterally projecting boss 27 with the exterior of the device 10, the boss 27 being adapted to be connected in a system to supply thereto a pulp slurry under pressure.
  • the arrangement is one to introduce the pulp slurry into the cylindrical sleeve portion 14 tangentially of the wall of bore 17.
  • the continued application of pressure at the inlet causes the pulp slurry to progress from the head section of the device through annular chamber into the base end of section -11 and thence through separating chamber 12 to the apex end of section 11 in a swirling, helical motion inducing centrifugal forces.
  • the nozzle 19 serves in this connection as a vortex finder, the inner end of its tube 23 extending to receive the inner vortex and to conduct it out of the separating device, the outer end of the nozzle being adapted, 'as noted, for connection in a suit-able conduit to conduct the materials caught in the inner vortex to a subsequent process step.
  • relatively light and desirable fibres from the liquid pulp slurry are gathered up by the inner vortex and conducted out through the head section 13 by way of nozzle 19. This comprises the accepted fraction, the remainder of the slurry leaving the separator through the apex end of the section 11 as the rejected fraction.
  • the velocity of flow of the slurry accelerates rapidly and uniformly as it encounters the decreasing diameter of conical body section 11.
  • the centrifugal action forcing heavier particles outward toward the wall of the separating chamber is greatly multiplied.
  • a spiraling column moving in the opposite direction, is formed in the central region of the separating chamber, at the axis of which is a liquid free core.
  • the light desirable pulp particles transfer from the outer vortex to the inner vortex and are directed thereby to and through the accepts nozzle 19.
  • the device provides opposed components of flow directed respectively toward the base and apex ends of the separator chamber 12.
  • a pressure differential from the outer chamber wall toward the center line or axis of the chamber 12 produces a movement of liquid in this direction, this being in conjunction with the downward component of liquid flow.
  • Some dirt particles moving toward the outer wall under centrifugal influence may find themselves balanced by the involved forces. As a result, these particles assume a position of equilibrium and go into a more or less fixed orbit. Eventually these particles leave their orbits and appear, unpredictably, in the accepts or the rejects fractions. Also, when the slurry is introduced into the cleaner the pulp and dirt begin to move to the outside of the separator wall. The population of solids adjacent the chamber wall increases.
  • Pulp material is separated or cleaned in stages and improvements in the efliciency of the hydrocyclone are desirable as reducing the number of required stages, as well as providing clean, conditioned pulp for the paper making process in as facile and economical a manner as possible.
  • improved efficiency is achieved by creating a controlled turbulence in the slurry flow in the separating chamber 12 in an area within or beyond the inner end of nozzle 19.
  • the flow disturbance has the effect of reducing consistency at the separator wall and of inhibiting orbiting by dirt particles.
  • the bore 17 in cylindrical sleeve portion 14 is formed eccentrically of the sleeve axis.
  • the annular chamber 25 and the separating chamber 12 proper accordingly are misaligned.
  • the sleeve 14 is so positioned atop the base end of body section 11 as to align a segment of the wall of bore 17 with the wall of separating chamber 12. This occurs in the relatively thin wall portion of the sleeve 14 and the transfer of flowing slurry at this location from the annular chamber 25 to the chamber 12 proper is a relatively smooth and uninterrupted motion.
  • the relatively thicker section of sleeve 14 under this mounting condition overlaps the engaged part of the base end of section 11 in such manner as to define in effect an arcuate, undercut or inverted ledge 28.
  • the nozzle 19 is concentric to such axis. This is accomplished by forming in the outer end of the cylindrical sleeve portion 14 a counterbore 29 which is concentric with the axis of section 11 and which seats therein the head portion 18 of the nozzle 19.
  • the bore 17 is eccentric troughout its length except for counterbore 29, and inlet 26 is positioned to be diametrically opposed to the portion of greater width of the ledge 28. Modifications of these arrangements are, of course, possible, particularly one placing the ledge 28 at any point along the length of the bore 17. Further, the arcuate distance of such ledge may be varied or it may in fact be continuous around the circumference of the base end of section 11.
  • nozzle 19 and bore 17 may be made concentric with one another while section 11 is made ementric to both. This produces, selectively, either an upturned or down turned ledge corresponding to the ledge 28.
  • the required degree of eccentricity is slight but if necessary more nearly to align the underfiow apex outlet with the overflow nozzle 23 the body section 11 may be caused to assume a slightly tilted position.
  • the means of the invention has been described as operating to improve the efficiency of a hydrocyclone by inhibiting particle orbiting therein and by reducing consistency toward the separator wall. It is possible, however, that other operational factors are involved presently unknown. Thus no attempt is made exhaustively to analyze the effects produced by the invention in its various forms. It is known that efficiency improvements result and it has been the object herein merely to state some of the likely or probable causes therefor without excluding others.
  • rejection rate by which is meant the percentage of slurry discharged through the rejects outlet under given conditions of pressure, stock consistency, temperature and the like, the instant invention affords distinct and substantial advantages.
  • the rejection rate is significantly lower at elevated pulp temperatures. It is well established that heretofore the higher the temperature of pulp in a pulp mill the greater will be the rejection rate. In direct test comparisons, it has been shown that a standard separator has been adversely affected by increases in pulp temperature, the rejection rate more than tripling under comparatively modest temperature rises as from 90 F. to 111 F. A separator of the instant invention, however, operating under the same conditions, has its reject rate relatively unaffected by the temperature rise. Thus, from a practical standpoint, the separator with the eccentric bore in the head has substantial advantages over a standard device. It is capable of operating to greater advantage over a wide range of temperatures. Also it is more efiicient.
  • the turbulence created in the upper part of the separator chamber prevents matting of the fibers as they move down the inner wall of the cone section. Since the consistency of the layer near the well is lower with the eccentric head cleaner, there are fewer collisions between a dirt particle making its way to the wall and the fibres which lie therebetween.
  • FIG. 5 hereof shows, in partly diagrammatic form, a separator body 31 comprising concentric head and cone sections 32 and 33.
  • a crescent shaped segment 34 is installed in the head section 32 in a generally opposed relation to an inlet 35 and in a manner presenting a ledge 36 over which the slurry discharges in a part of the circumference of the head in passing into the cone section.
  • the invention is applicable not only to separators having cylindrical head and conical body sections, but also to separators of single configuration.
  • a form of separator in common use defines throughout its length a single section of a cone. The base end thereof serves as the head and may be constructed in accordance with any of the foregoing examples to achieve the instantly provided ledge.
  • the invention contemplates a fully conical separator, respective sections of which may be eccentrically offset to produce a fiow disturbing ledge as provided by the present invention.
  • a hydrocyclone providing a separating chamber circular in cross section and open at its opposite ends to define overflow and underfiow outlets, said chamber having near one end thereof a feed inlet tangentially disposed with respect to the separating chamber; characterized in that a portion of said chamber containing said feed inlet is eccentrically disposed relative to the balance of the chamber, said portion presenting a continuously circular interior wall surface parallel to the longitudinal axis of said chamber, the remainder of said chamber containing the feed inlet being generally concentrically disposed relative to the balance of the chamber, the feed inlet being formed in and conforming to the curvature of said surface, said surface at its juncture with the balance of said chamber providing a ledge substantially at right angles to the axis of said chamber.
  • a hydrocyclone according to claim 1 further characterized in that said ledge is inverted for an abrupt drop off from said portion to the said balance of the chamber.
  • a hydrocyclone according to claim 1 characterized in that the diameter of said portion of said chamber at its juncture with the balance of said chamber is less than the diameter of said balance of said chamber at said juncture with said portion being disposed to align a part of the interior surface thereof with the surface of the balance of said chamber while the remainder thereof is in oflfset overhanging relation to the said balance of said chamber.
  • a hydrocyclone providing a separating chamber circular in cross section and open at its opposite ends to define overflow and underfiow outlets, said chamber having body and head sections, the latter having a feed inlet tangentially disposed with respect to the separating chamber to introduce separable material into said chamber; characterized in that said head section is eccentric relative to said body section, there being formed at the juncture of said sections an arcuate ledge inducing turbulence in the flow of said material, said ledge being in a plane substantially at right angles to the flow axis and at its opposite ends being of minimum width and progressing .to a location of maximum width at its mid point.
  • a hydrocyclone according to claim 4 further characterized in that said head section is made relatively small in diameter whereby to cause said ledge to assume an overhanging relation to said body section.
  • a hydrocyclone according to claim 4 further characterized in that said head section is made relatively large in diameter whereby to cause said ledge to assume a recessed relation to said body section facing said inlet.
  • a hydrocyclone according to claim 4 characterized in that opposing portions of the interior surfaces of said head and body sections are aligned to form a continuing, substantially uninterrupted surface over a part of the juncture between said body and head sections, the remaining part of said juncture being occupied by said ledge, the ends of said ledge merging smoothly with the said first part of said juncture.
  • a continuously circular hydrocyclonic separator providing a separator chamber, an overflow nozzle at one end of said chamber for discharge of accepted material and an underflow opening at the opposite end of said chamber for discharge of rejected material, said nozzle and said opening being disposed for creation of an inner vortex exiting through said nozzle, means for introducing a slurry into said chamber tangentially of the wall thereof at said one end to progress helically through said chamber toward said underflow opening, means displaced from said slurry introducing means providing that at least a portion of the interior wall of the separator chamber is offset to create a turbulence producing ledge of lateral extent in the line of flow and generally at right angles to the chamber axis, the bore of said chamber to one side of said ledge having the axis thereof displaced from the axis of the bore of said chamber to the other side of said ledge.
  • a separator according to claim 8 characterized by a crescent shaped insert device installed in said chamber to provide the described ledge.
  • a hydrocyclonic separator comprising a body section having the shape of a truncated cone, the interior of said body section being hollow to define a separating chamber and the opposite ends of said chamber opening through the base and apex ends of said body section, a head section seated at its inner end to the base end of said body section, said head section having a through longitudinal bore therein different in diameter from the diameter of said separating chamber at said base end of said body section, means for securing said head section to said body section in a position disposing the axis of said longitudinal bore eccentrically of the longitudinal axis of said separating chamber, the juncture of said inner end of said head section and the base end of said body section defining a generally crescent shaped ledge in a plane substantially at right angles to the longitudinal axisof said separating chamber, said head section including therein an overflow outlet and a feed inlet tangentially disposed with respect to said longitudinal bore and said body section including at its apex end an underflow outlet.
  • a separator as in claim 10 characterized by peripheral edge portions of said longitudinal bore and said separating chamber aligning with one another at said juncture beyond the ends of said ledge for smooth flow transition from said bore to said chamber in a part of said juncture, the part occupied by said ledge providing for flow disturbance.
  • a hydrocyclonic separator characterized in that said longitudinal bore is smaller in diameter than the diameter of said separating chamber at the base end of said body section, said ledge overhanging said separating chamber to define an abrupt drop off for material flowing to said chamber over said ledge.
  • a hydrocyclonic separator characterized in that said outer end of the head section is formed with a counterbore the axis of which is eccentric to the axis of said bore and in the installed position of said head section aligned with the axis of said separating chamber, and means closing the outer end of said head section including a body portion received in said counterbore, and said overflow outlet being formed in the axis of said body portion.
  • a hydrocyclone providing means defining a separating chamber continuously circular in cross-section and means at its opposite ends formed to provide openings to define overflow and underflow outlets, said chamber having near one end thereof a feed inlet tangentially disposed with respect to the separating chamber, a portion of said chamber defining means providing a chamber wall portion which is eccentrically offset relative to the axis of said chamber to provide to at least one end thereof an exposed surface forming part of the chamber wall which lies in a plane transverse to the axis of said chamber and provides in said plane a ledge thereby to disturb the flow down one side of the chamber wall, the opposite side of said chamber wall being substantially smooth and generally devoid of offset portions.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cyclones (AREA)
  • Paper (AREA)
US444998A 1965-04-02 1965-04-02 Eccentric head hydrocyclone Expired - Lifetime US3385437A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US444998A US3385437A (en) 1965-04-02 1965-04-02 Eccentric head hydrocyclone
FI660658A FI45475C (fi) 1965-04-02 1966-03-15 Hydrosykloni.
DE19661517889 DE1517889A1 (de) 1965-04-02 1966-03-17 Hydrozyklon-Abscheider
GB13780/66A GB1090502A (en) 1965-04-02 1966-03-29 A hydrocyclonic separator
SE04268/66A SE327184B (ru) 1965-04-02 1966-03-30
FR55927A FR1474396A (fr) 1965-04-02 1966-03-31 Séparateurs hydrocycloniques et procédé pour améliorer leur rendement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US444998A US3385437A (en) 1965-04-02 1965-04-02 Eccentric head hydrocyclone

Publications (1)

Publication Number Publication Date
US3385437A true US3385437A (en) 1968-05-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
US444998A Expired - Lifetime US3385437A (en) 1965-04-02 1965-04-02 Eccentric head hydrocyclone

Country Status (5)

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US (1) US3385437A (ru)
DE (1) DE1517889A1 (ru)
FI (1) FI45475C (ru)
GB (1) GB1090502A (ru)
SE (1) SE327184B (ru)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2831086A1 (de) * 1977-07-18 1979-02-08 Celleco Ab Hydrozyklonseparator
US5240115A (en) * 1992-11-10 1993-08-31 Beloit Technologies, Inc. Field adjustable hydrocyclone
WO2009074877A2 (en) 2007-12-11 2009-06-18 Smiths Detection-Watford Limited Substance detection device utilizing a cyclone particle separator
US20100258512A1 (en) * 2009-04-14 2010-10-14 National Oilwell Varco Hydrocyclones for treating drilling fluid
USD828422S1 (en) * 2017-01-24 2018-09-11 Superior Industries, Inc. Hydrocyclone inlet head
USD857071S1 (en) * 2017-01-24 2019-08-20 Superior Industries, Inc. Hydrocyclone inlet head
US11344897B1 (en) 2019-04-05 2022-05-31 Tetra Technologies, Inc. Method and apparatus for hydrocyclone

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5432186B2 (ru) * 1974-03-20 1979-10-12
ITPR20090021A1 (it) * 2009-03-27 2010-09-28 Lavorwash Spa Condotto per aspiratore, aspiratore e metodo per filtrare un fluido

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US940076A (en) * 1908-08-18 1909-11-16 Jonathan M Seaver Separator.
US997171A (en) * 1910-08-15 1911-07-04 John Conrad Zehfus Dust-collector.
US2731147A (en) * 1953-04-24 1956-01-17 Equipment Engineers Inc Hydraulic classifier
US2735547A (en) * 1956-02-21 vissac
US2776053A (en) * 1954-01-28 1957-01-01 Equipment Engineers Inc Hydraulic separating apparatus and method
US2840240A (en) * 1956-12-20 1958-06-24 Begs Oil Tool Rentals Inc Sand removing apparatus
US2929501A (en) * 1957-01-30 1960-03-22 Int Minerals & Chem Corp Cyclone separator
DE1146338B (de) * 1953-12-09 1963-03-28 Tongeren N V Bureau Van Multizyklon zur Staubabscheidung aus Gasen
US3098036A (en) * 1959-09-11 1963-07-16 Babcock & Wilcox Ltd Classifying apparatus
US3313311A (en) * 1964-01-03 1967-04-11 Colston Ltd C Dishwashing machine with liquid filtering cyclone

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735547A (en) * 1956-02-21 vissac
US940076A (en) * 1908-08-18 1909-11-16 Jonathan M Seaver Separator.
US997171A (en) * 1910-08-15 1911-07-04 John Conrad Zehfus Dust-collector.
US2731147A (en) * 1953-04-24 1956-01-17 Equipment Engineers Inc Hydraulic classifier
DE1146338B (de) * 1953-12-09 1963-03-28 Tongeren N V Bureau Van Multizyklon zur Staubabscheidung aus Gasen
US2776053A (en) * 1954-01-28 1957-01-01 Equipment Engineers Inc Hydraulic separating apparatus and method
US2840240A (en) * 1956-12-20 1958-06-24 Begs Oil Tool Rentals Inc Sand removing apparatus
US2929501A (en) * 1957-01-30 1960-03-22 Int Minerals & Chem Corp Cyclone separator
US3098036A (en) * 1959-09-11 1963-07-16 Babcock & Wilcox Ltd Classifying apparatus
US3313311A (en) * 1964-01-03 1967-04-11 Colston Ltd C Dishwashing machine with liquid filtering cyclone

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2831086A1 (de) * 1977-07-18 1979-02-08 Celleco Ab Hydrozyklonseparator
US4175036A (en) * 1977-07-18 1979-11-20 Ab Celleco Hydrocyclone separator
US5240115A (en) * 1992-11-10 1993-08-31 Beloit Technologies, Inc. Field adjustable hydrocyclone
WO1994011109A1 (en) * 1992-11-10 1994-05-26 Beloit Technologies, Inc. Adjustable hydrocyclone
US8728397B2 (en) 2007-12-11 2014-05-20 Smith Detection-Watford Limited Substance detection device utilizing a cyclone particle separator
WO2009074877A3 (en) * 2007-12-11 2009-08-13 Smiths Detection Watford Ltd Substance detection device utilizing a cyclone particle separator
US20110001045A1 (en) * 2007-12-11 2011-01-06 Smiths Detection-Watford Limited Substance detection device utilizing a cyclone particle separator
WO2009074877A2 (en) 2007-12-11 2009-06-18 Smiths Detection-Watford Limited Substance detection device utilizing a cyclone particle separator
US20100258512A1 (en) * 2009-04-14 2010-10-14 National Oilwell Varco Hydrocyclones for treating drilling fluid
US8202415B2 (en) 2009-04-14 2012-06-19 National Oilwell Varco, L.P. Hydrocyclones for treating drilling fluid
USD828422S1 (en) * 2017-01-24 2018-09-11 Superior Industries, Inc. Hydrocyclone inlet head
USD857071S1 (en) * 2017-01-24 2019-08-20 Superior Industries, Inc. Hydrocyclone inlet head
US11344897B1 (en) 2019-04-05 2022-05-31 Tetra Technologies, Inc. Method and apparatus for hydrocyclone

Also Published As

Publication number Publication date
GB1090502A (en) 1967-11-08
DE1517889A1 (de) 1969-12-18
SE327184B (ru) 1970-08-17
FI45475B (ru) 1972-02-29
FI45475C (fi) 1972-06-12

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