US3861532A - Vortex separator - Google Patents

Vortex separator Download PDF

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Publication number
US3861532A
US3861532A US411355A US41135573A US3861532A US 3861532 A US3861532 A US 3861532A US 411355 A US411355 A US 411355A US 41135573 A US41135573 A US 41135573A US 3861532 A US3861532 A US 3861532A
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Prior art keywords
separator
reject
compartment
accept
units
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US411355A
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English (en)
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Karl Arvid Skardal
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Fractionator AB
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Fractionator AB
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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
    • B04C5/24—Multiple arrangement thereof

Definitions

  • the external casing of the individual separator units is cylindrical.
  • the individual separator units extend completely through the reject, inject and accept compartments in aligned openings in the wallsbetween the compartments and the outer end walls of the reject and accept compartments respectively, so that the axial ends of the separator units are accessible from the outside at said 5 M98 l 52 6 2 Hi5 U SW0 3 5 4 7 a/ SB 5 2 m l u 5 u u 0 n l a 2 n l m 1 n n m m w m m 2 w W m" S u m Tm 3 n 7 u u 9 u m l ms l 21C m t .M W 5 mm S U IF l.
  • the present invention is related to vortex separators also called hydro cyclones, in particular for cleaning or separation of fibrous suspensions of the type which includes a plurality of individual separators or cyclones. Each includes an at least a partially conical vortex chamber provided at its larger end with at least one substantially tangential inlet for the suspension to be treated.
  • inject compartment for the suspension to be treated communicate with the inject inlets of all individual separators.
  • common accept compartment for the lighter fraction communicates with the accept outlets of all individual separators aswell as a common reject com partment for-the heavier fraction communicating with common serious disadvantage that it is a comparatively complicated and time-consuming task to remove and replace'an individual separator unit and that this requires that the operation of the entire separator apparatus is stopped.
  • multiple vortex separators it is not possible during continued operation, to clean or clear 'an individual separator unit which has'been put out of operation due to clogging of its reject outlet and/or its inject inlet.
  • those-few prior art multipleseparators in which a clearing of the rejectoutletsof the.
  • the invention provides a vortex separator, in particular for separationor cleaning of fibrous suspension, comprising a plurality of individual separator units, each including an at least partially consubstantially tangential inject inlet for the suspension to be treated, the so-called inject, and an axial accept outlet for a lighter'fraction, the so-called accept, of the treated suspension and at its smaller end an axial reject outlet for a heavier fraction,.the so-called reject, of the treated suspension; a common inject compartment for the suspension to be treated communicating with the inject inlets of all said individual separator units; a common accept compartment for the lighter fraction communicating with the accept outlets of all said individual separator units; and 'a common reject compartment for the heavier fraction communicating with the reject outlets of all said individual separator units; said compartments being arranged side by side with the reject compartment and the accept compartment located on opposite sides of the inject compartment; and characterized in that each of said individual separator units has an elongate outer casing, which encloses the conical vortex chamber and has sealed opposite axial ends and
  • the most important advantage of the vortex separator resides therein that it is possible in a simple and rapid manner to remove and replace an individual separator unit without any interruption of the operationof the separator.
  • An individual separator unit which has been put out of operation, for instance, due to clogging or any other reason, can consequently be replaced with a new separator unit during continued operation of the separator and without any extensive disassemblingiand reassembling.
  • vortex separator is that it is possible during contin ued operation of the separator to observe visually the reject outlet as well as the accept outlet in each individual separator unit, whereby it is possible to detect very rapidly any clogging of the reject outlets as well as the inject inlets of the individual separator units. It is then being possible, as explained above,'to replace a clogged separator unit rapidly and easily with a new unit. 7
  • the vortex separator has also a comparatively simple structural design and requires relative to its capacity less space, both with respect to floor space and height to ceiling, than prior art multiple vortex separators.
  • FIG. 1 is an end view, partially in section, of a first embodiment of a vortex separator according to the invention, the section being taken along the line II in FIG. 2;
  • FIG. 2 is a side view, partially in section, of the separator shown in FIG. 1, thesection being taken along the line IIII in FIG. 1;
  • FIG. 3 shows on a larger scale, and in axial section, an individual separator unit in the separator shown in FIGS. 1 and 2;
  • FIG. 4 is a side view, similar to the one in FIG. 2, of a vortex separator according to the invention provided with means for diluting the reject;
  • FIG. 5 shows a cross-section through the separator in I FIG. 4 along the line VV in FIG. 4;
  • FIG. 6 shows on a larger scale and in similar manner to FIG. 3, how an individual separator unit is mounted in the common inject, accept, reject and dilution liquid compartments in the vortex separator shown in FIGS. 4 and 5.
  • the end walls 2 and 3 and the internal partition walls 4 and 5 of the vessel 1 are square and project consequently partially outside the cylindrical shell of the vessel. This facilitates the installation of the vessel.
  • the vessel 1 is resting on bed beams 12 and 13 with angle irons 14 and 15 respectively, which are attached along one side of the square external walls 2 and 3.
  • the vessel 1 is arranged with its pipe connections 9, l0, l1 pointing downwards, but it is obvious that the vessel could just as well be mounted on a support bed with the pipe connections pointing upwards or to the one or the other side. In this way the position of the vessel 1 can readily be adapted to the most suitable arrangement in the surrounding plant of the pipe conduits 1'6, 17 and 18 respectively connected to the pipe connections 9, l0 and 11.
  • the individual separator units 23 of the separator are mounted in the vessel 1, side, by side with their longitudinal axes mutually parallel, and parallel to the axis of the vessel 1. As most readily seen in FIG. 3, the separator units extend completely through the'vessel 1 in aligned openings'19, 20, 21 and 22 in the walls 2, 4,5 and 3 respectively of the vessel. In the illustrated embodiment, the vessel 1 is designed to hold 121 individual separator units. As shown in FIG. 3, each individual separator unit 23 is shaped as an elongate cylinder having a smooth cylindrical external wall with a uniform diameter over the entire length of the unit. Consequently, each individual separator unit can separately,
  • seal rings 24 of suitable elastic material, which are inserted in the openings 19 to 22 and seal against the surface of the separator'units 23.
  • these seal rings 24 have such a design that they are pressed against the surface of the separator units 23 by the liquid pressure existing within the compartments 6, 7 an 8 during operation of the separator.
  • the friction between the seal rings 24, and the external wall of the separator units 23, is sufficiently small, however, soar not to prevent the axial displacement ofthe separator units into and out from the vessel 1.
  • each individual separator unit 23 comprises a cylindrical, substantially tubular central body 25, provided with two ducts 26 passing through its wall and having tangentially directed orifices into the interior of the central body 25 at one side of an internal transverse wall 27.
  • the transverse wall 27, is provided with a central axial bore 28, to which a relatively short tubular piece 29 is connected on the one side of the wall 27 and a relatively longer tubular piece 30 is connected on the opposite side of the wall 27.
  • the two tubular pieces 29 and 30 are preferably integral and may also be integral with the transverse wall 27.
  • a substantial conical tube 31 is joined with its larger end to the one axial end of the central body 25.
  • the conical tube 31- is connected tothe central body 25 by means of a tubular cylindrical sleeve 32, which has the same external diameter as the central body 25, and which is attached to the central body 25 by means of a threaded connection 33.
  • the tubular sleeve 32 en-' closes the conical tube 31 and extends axially past its narrow end.
  • the outer end of the sleeve 32 is sealed by an end plate 34, kept in place by a lock ring 35, screwed into an internal thread 36 at the end of the sleeve 32.
  • a similar tubular cylindrical sleeve 37 having the same external diameter as the central body 25 is connected to the other axial end of the central body 25 by means of a threaded connection 38.
  • the sleeve 37 encloses the tube 30 and extends. axially past the end of the tube 30.
  • the outer end of the sleeve 37 is sealed by an end plate 39 kept in place by an externally threaded short sleeve 40, which is screwed into an internal thread 41 in the outer end of the sleeve 37.
  • Adjacent its outer end the tubular sleeve 32 is provided with two radial ports 42, through which the interior of the sleeve 32 communicates with the compartment 6 in the vessel 1.
  • the tubular sleeve 37 is adjacent its outer end, provided with two ports 43 through which the interior of the sleeve 37 communicates with the compartment 8 in the vessel 1.
  • This separator unit 23 operates in a manner well known in the art.
  • the conical tube 31 forms a substantially conical vortex chamber 44, which receives at its larger end the suspension to be cleaned or separated, the so called inject, through the tangential ducts 26,
  • the compartment 7 in the vessel 1 serves as a common inject compartment for all separator units 23, to which inject compartment the inject suspension is supplied through the pipe conduit 17 and the pipe connection 10.
  • the suspension forms in well known manner a helical vortex, in which the suspension is separated in a heavier fraction, the so called reject, concentrated close to the wall of the vortex chamber and a lighter fraction, the so called accept, close to the center of the vortex.
  • the reject that is the heavier fraction, is discharged from the vortex chamber 44 through its narrow open end 45, which consequently serves as a reject outlet from the vortex chamber 44.
  • this compartment 6 serves as a common reject compartment for all separator units 23, from which a reject compartment the rejcect is withdrawn through the pipe connection 9 and the pipe conduit 16.
  • the accept that is the lighter fraction, is discharged from the vortex chamber 44in well known manner through the short tube 29, which serves as a vortex finder, and the openings 28in the transversewall 27 at the larger end of the vortex chamber 44. Consequently, the accept flows through the tube 30 and its open end 46 and subsequently, through the openings 43 in the sleeve 37 into the compartment 8 in the vessel 1. Consequently, the compartment 8 serves as a common accept compartment for all separator units 23, from which accept compartment the accept is withdrawn through the pipe connection 11' and the pipe conduit 18.
  • The-"two end plates 34 ad 39 consist preferably of a transparent material so as'to form windows, through which the suspension flow at the reject outlet 45 from the vortex chamber 44, and at the open end 46 of the accept outlet tube 30 respectively, can be observed from the outside during operation of the separator.
  • the end plate 34 of the separator unit 23 is provided with a threaded plug or screw 47 mounted in a threaded bore in the plate 34 and having its inner end shaped as a valve disc 47a, which can be brought to seal the reject outlet 45 from the vortex chamber 44 in that the plug 47 is screwed inwards. In this way the communication between the reject outlet 45 of the vortex chamber 44, and the openings 42 in the tubular sleeve 32 can be interrupted.
  • the other end plate 39 of the separator unit is provided with a threaded plug 48 mounted in a threaded bore in the plate 39 and provided at its inner end with a valve disc 48a, which can be brought to seal the accept outlet 46 from the vortex chamber 44 in that the plug 48 is screwed inwards.
  • the communication between the vortex chamber 44 and the openings 43 in the wall of the tubular sleeve 37 can be interrupted.
  • the internal thread 36 at the outer end of the sleeve 32 is complementary or identical to the internal thread 41 at the outer end of the other tubular sleeve 37 and fits consequently the external thread on the short sleeve 40. Consequently, the reject end of one separator unit can be joined to the accept end of another separator unit, in that the first unit is screwed with the internal thread 36 at its reject end onto the sleeve 40 at the accept end of the second separator unit.
  • the replaced separator unit is disconnected from the new separator unit, which is now mounted in the vessel 1 and which can be put into operation in that its plugs 47 and 48 are screwed outwards so that the reject outlet and accept outlet of the unit are openedand put into communication with the reject compartment 6 and the accept compartment 8 respectively. It is appreciated that such a replacement of a separator unit with a new separator unit can be carried out in short time and in a very simple way without any leakage of suspension or liquid from the vessel 1 or any overflow of liquid or suspension between the different compartments 6, 7 and 8 in the vessel.
  • tubular sleeves 32 and 37 and also the end plates 37 and 39 with the valve plugs 47 and 48 are identical to each other, which reduces the costs for the manufacture and stock-keeping of parts for the separator units.
  • the illustrated embodiment of a vortex separator apparatus requires a comparatively small floor space as it has to be accessible only at the end walls 2 and 3 of the vessel 1. Further, the necessary height to ceiling is limited to a height corresponding to the diameter of the vessel 1, or the height necessary for the operating personnel.
  • the separator units may instead of a circular cross-section, have an elliptical or polygonal cross-section.
  • mount the vessel 1 with its axis vertical, and consequently with the separator units vertical, in which case, however, means must be provided for retaining the separator units in axial direction in the vessel 1.
  • Such an arrangement would, however, probably make thereplacement of the separator units in the separator somewhat more complicated.
  • inject compartment, the reject-compartment and the accept compartment are joined to form an integral vessel as in the embodiment of the invention described in the foregoing, but these compartments couldalso be erected separately, side by side, possibly somewhat spaced from each other.
  • these compartments couldalso be erected separately, side by side, possibly somewhat spaced from each other.
  • the reject, inject and accept compartments have a plane-parallel shape with the individual separator units mounted with their longitudinal axes mutually parallel. It could also be contemplated, however, to design the accept, inject and reject compartments, as annular concentric compartments formed by concentrically mounted cylinders, in which case the individual separator units would extend radially through the concentric annular compartments.
  • a problem that may arise in a separator designed as described in the foregoing and illustrated in FIGS. 1 to 3, particularly when used for cleaning or separating fibrous suspensions, is caused by the fact that the heavier fraction, the so called reject, which is discharged from the individual separator units 23 into the common reject compartment 6, may have a comparatively thick and viscous consistency. This may cause that the reject flow within the reject compartment from the individual separator units to the discharge opening from the reject compartment will no longer be uniform in all parts of the reject compartment but may cease completely in some parts of the reject compartment. It is realized that the result will be that the separator units located in these parts of the reject compartments are put out of operation.
  • the vortex separator illustrated in FIGS. 4 to 6 comprises just as the separator illustrated in FIGS; 1 to 3 a cylindrical vessel 1, which has plane parallel end walls 2 and 3 and which is divided in an inject compartment 7, an accept compartment 8, and a reject compartment 6 by plane internal partition walls 4 and 5.
  • the vessel I is provided with an additional internal partition wall 49 so that the vessel contains an additional compartment 50, which is located between the inject compartment 7 and the reject compartment 6 and which is used for supplying dilution liquid to the reject.
  • the dilution liquid is fed into the compartment 50 through a pipe connection 51.
  • the individual separator units 23 extend through the vessel 1 in the manner described in the foregoing and as illustrated with dotted lines in FIG. 4 for a single separator unit. Consequently, each individual separator unit 23 extends through all compartments 6, 7, 8 and 50 in the vessel,-and through aligned openings in all walls of the vessel, that is the partition walls 4, 49, 5 as well as the end walls 2 and 3.
  • the openings for the separator unit 23 in the additional partition wall 49 are designated with 52.
  • the individual separator units have their inject ports 26 located within the inject compartment 7, their accept ports 43 located within the accept compartment 8, and their reject ports 42 located within the reject compartment 6.
  • the separator units 23 have no openings at all.
  • the openings 22 in the end wall 3, the openings 21 in the end-wall 5, the openings 52 in the additional partition wall 49 and the openings 19 in the outer end wall 2 are sealed by means of suitable seal rings 24 sealing against the outer surface of the separator units 23 in the same way as in the separator shown in FIGS. 1 to 3.
  • seal rings are omitted for at least some of the separator units, as shown in FIGS. 5 and 6, wherefore at these separator units an annular clearance or flow passage exists from the dilution liquid compartment 50 to the reject compartment along and about the surface of the separator unit 23. Consequently, during operation of the separator, dilution liquid fed into the dilution liquid compartment 50 through the feeder pipe 51 will from the compartment 50, flow into the reject compartment 6 through the openings 20 in the partition wall 4 along and about those separator units 23 which are not provided with any seal rings in the openings 20, as indicated by arrows 53 in FIG. 3.
  • the dilution liquid from the compartment 50 will flow into the reject compartment 6 along the outer surface of the separator units, whereby the dilution liquid keeps the reject ports 42 of the separator units clear so that any clogging of these reject ports is prevented, and the dilution liquid will also dilute the reject in the adjacent portions of the reject compartment 6 so that the reject can flow more easily towards the outlet 16 of the reject compartment 6.
  • the separator units 23, at which dilution liquid is fed into the reject compartment, are framed by a dash-dotted line in FIG. 5.
  • the separator units, at which dilution liquid is to be fed into the reject compartment in the manner described, are selected onthe basis of operation experiences so that the dilution liquid is fed into those parts of the reject compartment where it has been noticed that stoppages in the reject flow easily occur.
  • FIGS. 4 to 6 the embodiment of a vortex separator according to the invention illustrated in FIGS. 4 to 6 has a very simple and unexpensive structural design and that it makes it very easy to select those partsof the reject compartment into which dilution liquid shall be fed, on the basis of tests and operation results.
  • a vortex separator particularly for separating fibrous suspensions, comprising a plurality of individual separator units, each including an at least partially conical vortex chamber having at its larger end at least one substantially tangential inject inlet for the suspension to be treated and an axial accept outlet for a lighter fraction of the treated suspension and at its smaller end an axial reject outlet for a heavier fraction of the treated suspension; a common inject compartment for the suspension to be treated communicating with the inject inlets of all said individual separator units; a common accept compartment for said lighter fraction communicating with the accept outlets of all said individual sep-' arator units; and a common reject compartment for said heavier fraction communicating with the reject outlets of all said individual separator units, said compartments being arranged side by side with said reject and accept compartments located on opposite sides of said inject compartment, each of said individual separator units having an elongated external casing enclosing said conical vortex chamber and having sealed axial ends and an uniform external cross-sectional profile over its entire length, each individual separator unit extending completely through .s
  • a vortex separator as claimed in claim I wherein said reject, inject and accept compartments are parts of a common vessel having two substantially plane and parallel outer walls for the reject compartment and the accept compartment respectively, and two internal plane partition walls parallel to said outer walls between the inject compartment and the reject and acpling means, said first and second coupling means being complementary, so that one end of a first separator unit can be connected to the opposite end of a second separator unit by means of said first and second coupling means respectively, provided at said ends of said first and second separator units, whereby a separator unit can be removed from said reject, inject and accept compartments and replaced with a new separator unit in that one'end of said new separator unit is connected to the opposite end of said first mentioned sepa-' rator unit and subsequently pushed into said compartments, at the same time, as the first mentioned separator unit is pushed out from the compartments.
  • each of said'individual separator units is provided with two valve means operable from the outside of the opposite axial ends ofthe separator unit for shutting off respectively the communication between the reject outlet of the vortex chamber, and the reject port in the external casing of the separator unit and the communication between'the accept outlet of the vortex chamber and the accept port in the external casing of the separator unit.
  • valve means include threaded plugs screwed into aixal threaded bores in the axial end walls of the external casing of the separator unit and provided at their inner ends with valve discs adapted to close the reject outlet and the accept outlet of the vortex chamber respectively when the threaded plugs are screwed inwards into the separator unit.
  • a vortex separator as claimed in claim 1 comprising an additional compartment provided with an inlet for feeding a dilution liquid into the compartment, said additional compartment being located next to said reseparator units, are provided with said annular flow passages, whereas the openings provided in said partition wall for all other separator units are sealed against the outside of the separator units extending therethrough, said predetermined group of separator units comprising those separator units which are located furthest away from the reject outlet from said reject compartment.
  • a vortex separator as claimed in claim 8, wherein said additional compartment is located between said reject compartment and said inject compartment.
  • a vortex separator as claimed in claim 1, wherein said external casing of each individual separator unit is cylindrical with a constant diameter over the entire length of the casing.
  • each individual separator unit comprises a cylindrical, substantially tubular central body forming a central portion of the cylindrical casing of the separator unit, and having an internal transverse wall provided with a central axial aperture and in its circumferential wall at least one flow duct extending substantially tangentially from the outside of the central body to the interior of the central body on one side of said transverse wall; a conical tube forming said vortex chamber and joined with its larger end to the axial end of said central body located on said one side of said transverse wall; a first cylindrical tubular sleeve having the same external diameter as said central body and attached at one end to said axial end of said central body so as to enclose said conical tube and extending at its opposite end axially past the smaller end of said conical tube; a first end plate sealing said opposite end of said first tubular sleeve; a second cylindrical tubular sleeve having the same external diameter as said central body and connected at its one end to the opposite axial
  • a vortex separator as claimed in claim 12, comprising a tube having substantially the same inner diameter as said central aperture in said transverse wall of saidcentral body and extending from said transverse wall within said second tubular sleeve to a point adjacent but axially spaced from said second end plate.

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  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
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US411355A 1972-11-06 1973-10-25 Vortex separator Expired - Lifetime US3861532A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE14346/72A SE367928B (US06811534-20041102-M00003.png) 1972-11-06 1972-11-06
SE7313261A SE379155B (US06811534-20041102-M00003.png) 1972-11-06 1973-09-28

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US3861532A true US3861532A (en) 1975-01-21

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US411355A Expired - Lifetime US3861532A (en) 1972-11-06 1973-10-25 Vortex separator

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US (1) US3861532A (US06811534-20041102-M00003.png)
JP (1) JPS5222468B2 (US06811534-20041102-M00003.png)
AT (1) AT339927B (US06811534-20041102-M00003.png)
BR (1) BR7308632D0 (US06811534-20041102-M00003.png)
CA (1) CA990685A (US06811534-20041102-M00003.png)
CS (1) CS175364B2 (US06811534-20041102-M00003.png)
DE (1) DE2355178A1 (US06811534-20041102-M00003.png)
FI (1) FI53998C (US06811534-20041102-M00003.png)
FR (1) FR2205370B1 (US06811534-20041102-M00003.png)
GB (1) GB1422400A (US06811534-20041102-M00003.png)
IT (1) IT994472B (US06811534-20041102-M00003.png)
SE (2) SE367928B (US06811534-20041102-M00003.png)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984308A (en) * 1974-11-01 1976-10-05 Rastatter Edward L Vortical cyclone cluster apparatus
US4155839A (en) * 1977-11-28 1979-05-22 The Black Clawson Company Reverse centrifugal cleaning of paper making stock
US4189377A (en) * 1977-03-09 1980-02-19 Alfa-Laval Ab Multiple cyclone separator
US4211643A (en) * 1978-02-22 1980-07-08 Ab Celleco Hydrocyclone separator
EP0096562A2 (en) * 1982-06-04 1983-12-21 The Black Clawson Company Reverse centrifugal cleaning of paper making stock
EP0159808A2 (en) * 1984-03-19 1985-10-30 Bird Escher Wyss Inc. Hydrocyclone separator apparatus
US4564443A (en) * 1983-07-14 1986-01-14 The Black Clawson Company Reverse centrifugal cleaning of paper making stock
EP0377014A1 (en) * 1988-05-20 1990-07-11 Conoco Specialty Products Inc. Cyclone separator apparatus
US6758343B1 (en) * 1999-06-02 2004-07-06 Weir Slurry Group, Inc. Dual hydro-cyclone with water injection
US20070216500A1 (en) * 2006-03-04 2007-09-20 Voith Patent Gmbh Device for removing heavy contaminants from an apparatus for treating a fibrous suspension, in particular from a hydrocyclone that can be operated for cleaning a fibrous suspension
US20110259819A1 (en) * 2007-07-30 2011-10-27 Stephen Beedie Cyclone apparatus
US8932472B2 (en) 2011-10-25 2015-01-13 National Oilwell Varco, L.P. Separator system and related methods

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CA1206441A (en) * 1982-11-15 1986-06-24 Jacek J. Macierewicz Processing apparatus incorporating cup-shaped pressure seal
FR2616771B1 (fr) * 1987-06-18 1989-10-27 Gaignet Yves Dispositif et procede de montage d'une cartouche monobloc thermosoudee ou collee pour la production d'eau ultrapure
JPH04121281U (ja) * 1991-04-17 1992-10-29 株式会社村井 積層物の収納器
US5798040A (en) * 1996-02-09 1998-08-25 United States Filter Corporation Water purification cartridge assembly with unidirectional flow through filter media
US5895570A (en) 1996-02-09 1999-04-20 United States Filter Corporation Modular filtering system

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US3074218A (en) * 1961-02-16 1963-01-22 American Air Filter Co Gas cleaner
US3371794A (en) * 1966-11-28 1968-03-05 Dorr Oliver Inc Manifolded hydrocyclone unit
US3415374A (en) * 1964-03-05 1968-12-10 Wikdahl Nils Anders Lennart Method and apparatus for vortical separation of solids
US3598731A (en) * 1968-11-20 1971-08-10 Celleco Ab Multiple hydrocyclone

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
US3074218A (en) * 1961-02-16 1963-01-22 American Air Filter Co Gas cleaner
US3415374A (en) * 1964-03-05 1968-12-10 Wikdahl Nils Anders Lennart Method and apparatus for vortical separation of solids
US3415374B1 (US06811534-20041102-M00003.png) * 1964-03-05 1968-12-10
US3415374B2 (US06811534-20041102-M00003.png) * 1964-03-05 1989-10-24
US3371794A (en) * 1966-11-28 1968-03-05 Dorr Oliver Inc Manifolded hydrocyclone unit
US3598731A (en) * 1968-11-20 1971-08-10 Celleco Ab Multiple hydrocyclone

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984308A (en) * 1974-11-01 1976-10-05 Rastatter Edward L Vortical cyclone cluster apparatus
US4189377A (en) * 1977-03-09 1980-02-19 Alfa-Laval Ab Multiple cyclone separator
US4155839A (en) * 1977-11-28 1979-05-22 The Black Clawson Company Reverse centrifugal cleaning of paper making stock
FR2410082A1 (fr) * 1977-11-28 1979-06-22 Black Clawson Co Appareillage et procede d'epuration a contre-courant de la pate a papier
US4211643A (en) * 1978-02-22 1980-07-08 Ab Celleco Hydrocyclone separator
EP0096562A2 (en) * 1982-06-04 1983-12-21 The Black Clawson Company Reverse centrifugal cleaning of paper making stock
EP0096562A3 (en) * 1982-06-04 1984-10-24 The Black Clawson Company Reverse centrifugal cleaning of paper making stock
US4564443A (en) * 1983-07-14 1986-01-14 The Black Clawson Company Reverse centrifugal cleaning of paper making stock
EP0159808A2 (en) * 1984-03-19 1985-10-30 Bird Escher Wyss Inc. Hydrocyclone separator apparatus
US4605495A (en) * 1984-03-19 1986-08-12 Bird Machine Company, Inc. Hydrocyclone separator apparatus
EP0159808A3 (en) * 1984-03-19 1987-08-05 Bird Machine Company Hydrocyclone separator apparatus
EP0377014A1 (en) * 1988-05-20 1990-07-11 Conoco Specialty Products Inc. Cyclone separator apparatus
EP0377014A4 (en) * 1988-05-20 1991-03-13 Conoco Specialty Products Inc. Cyclone separator apparatus
US6758343B1 (en) * 1999-06-02 2004-07-06 Weir Slurry Group, Inc. Dual hydro-cyclone with water injection
US20070216500A1 (en) * 2006-03-04 2007-09-20 Voith Patent Gmbh Device for removing heavy contaminants from an apparatus for treating a fibrous suspension, in particular from a hydrocyclone that can be operated for cleaning a fibrous suspension
US7819257B2 (en) * 2006-03-04 2010-10-26 Voith Patent Gmbh Device for removing heavy contaminants from an apparatus for treating a fibrous suspension, in particular from a hydrocyclone that can be operated for cleaning a fibrous suspension
US20110259819A1 (en) * 2007-07-30 2011-10-27 Stephen Beedie Cyclone apparatus
US8439206B2 (en) * 2007-07-30 2013-05-14 Merpro Tortek Limited Cyclone apparatus
US8932472B2 (en) 2011-10-25 2015-01-13 National Oilwell Varco, L.P. Separator system and related methods

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SE379155B (US06811534-20041102-M00003.png) 1975-09-29
CA990685A (en) 1976-06-08
JPS5222468B2 (US06811534-20041102-M00003.png) 1977-06-17
GB1422400A (en) 1976-01-28
BR7308632D0 (pt) 1974-08-15
DE2355178A1 (de) 1974-05-16
AT339927B (de) 1977-11-10
ATA930173A (de) 1977-03-15
CS175364B2 (US06811534-20041102-M00003.png) 1977-05-31
FI53998B (fi) 1978-05-31
SE7313261L (US06811534-20041102-M00003.png) 1975-04-01
FR2205370A1 (US06811534-20041102-M00003.png) 1974-05-31
SE367928B (US06811534-20041102-M00003.png) 1974-06-17
IT994472B (it) 1975-10-20
JPS49133964A (US06811534-20041102-M00003.png) 1974-12-23
FR2205370B1 (US06811534-20041102-M00003.png) 1977-08-05
FI53998C (fi) 1978-09-11

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