US3716137A - Cyclone separator - Google Patents

Cyclone separator Download PDF

Info

Publication number
US3716137A
US3716137A US00020539A US3716137DA US3716137A US 3716137 A US3716137 A US 3716137A US 00020539 A US00020539 A US 00020539A US 3716137D A US3716137D A US 3716137DA US 3716137 A US3716137 A US 3716137A
Authority
US
United States
Prior art keywords
discharge
chamber
discharge chamber
opening
discharge opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00020539A
Other languages
English (en)
Inventor
R Frykhult
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.)
Celleco AB
Original Assignee
Celleco AB
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 Celleco AB filed Critical Celleco AB
Application granted granted Critical
Publication of US3716137A publication Critical patent/US3716137A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations

Definitions

  • Retarding means of the screw type are arranged coaxially in the discharge chamber UNITED STATES PATENTS and locked against rotation, the pitch of the retarding 2,236,548 4/1941 Prouty ..209/154 X means being reversed relative to the pitch of the 2,252,581 8/ 1941 Saint-Jacques ..209/144 screw-shaped track of the separated phase.
  • the present invention relates to cyclone separators of the type provided with a discharge chamber coaxialwith the separator and through which a phase that has been separated will flow in an axial direction toward a discharge opening, the separated phase also having a rotary movement around the axis of the discharge chamber and thus following a screw-shaped or spiral track.
  • Cyclone separators are utilized for various purposes. One of their major uses is in the cellulose industry for the purification of suspensions of cellulose fibers. Accordingly, conditions in the cellulose industry will be referred to as examples in the following description.
  • impurities are present such as bark particles, metal particles, sand and the like, which must be separated from the suspension. They will otherwise cause stains on the paper made from the fiber suspension.
  • the impurities When the suspension is treated in a cyclone separator, the impurities will form a heavy phase, which thus can be separated from the light phase containing the'cellulose fibers. It is obvious that the flow of the heavy phase should be controlled so that as small a portion as possible of the light phase will leave together with the heavy phase. Otherwise, losses will occur. On the other hand, the flow of the separated heavy phase must be controlled so that the discharged light phase will be purified to a satisfactory degree.
  • One object of the present invention is to provide a discharge chamber for a cyclone separator which is so constructed as to enable decreasing the flow of the separated heavy phase to a desired minimum without resorting to throttling the discharge opening of the discharge chamber, thus avoiding clogging of the opening.
  • Another object is to provide a sufficiently great pressure drop in the discharge chamber of a cyclone separator without throttling its discharge opening, so that the separating function of the separator will not be dependent upon small inherent mechanical qualities. It will thus be possible to control effectively a multiple cyclone separator comprising a greatnumber of individual separators, by controlling the counter pressure in a receiving chamber common to the individual separators by means of one single valve in the discharge duct of the receiving chamber.
  • a still further object is to make it possible to provide the discharge chamber, without impairing the separation result, with a free discharge opening so large (even larger than the outlet of the vortex chamber) that no clogging can possibly occur.
  • the discharge chamber of the cyclone separator contains means fixed therein and having a part located in the screw-shaped track or helical path of the separated phase for retarding its rotation as it passes toward the discharge opening of this chamber, the latter including a free space for flow of the separated phase from said fixed means to the discharge opening.
  • FIG. 1 is a side elevational view of a cyclone separator according to the invention, the lower part below the line III being in vertical section;
  • FIG. 2 is a view of the arrangement according to FIG. 1 as seen from above;
  • FIG. 3 is the vertical section below line III in FIG. 1 on an enlarged scale
  • FIGS. 4, 5 and 6 show further embodiments of the invention in vertical section.
  • reference numeral 1 designates a cyclone separator having a vortex chamber 2.
  • the discharge chamber is indicated by reference numeral 3.
  • the vortex chamber has at its upper end a tangential inlet 4 for the product to be treated, and an axial outlet 5 for the light phase separated in the vortex chamber.
  • the cyclone separator discharges separated heavy phase into the discharge chamber 3 by an outlet 6.
  • the discharge chamber is provided with a discharge opening 7 for the separated heavy phase, this opening being coaxial with the outlet 6.
  • a swiftly rotating vortex is developed in the vortex chamber 2, rotating in the direction shown by the arrow X in FIG. 2.
  • the heavy phase is separated from the light phase and forms a layer adjacent to the wall of the vvortex chamber.
  • the vortex has an axial movement downward, but near to the outlet 6 the light phase will develop an upwardly directed axial movement.
  • air or gases separated from the liquid will form a core around the axis of the vortex chamber.
  • the heavy phase layer originally formed adjacent to the wall of the vortex chamber 2 will continue to move in the downward direction while rotating around the axis of the discharge chamber 3.
  • the heavy phase thus flows in an axial direction toward the discharge opening 7 of the discharge chamber, and at the same time it continues its rotary movement.
  • the phase therefore flows along a screw-shaped or spiral track.
  • the heavy phase impinges upon a member 12 (FIGS. 3 and 5), 12a (FIG. 4) or 12b (FIG. 6) arranged in the discharge chamber. This member in FIGS.
  • the effect obtained from the member 12 or 12a is best explained in the following way: It should be possible to create an axial counter pressure and a corresponding pressure drop without throttling the discharge opening of the discharge chamber, if a centrifugal pump with an open pump rotor, or a screwpump, were connected to the discharge opening 7 and arranged to tend to pump the discharged heavy phase in an axial direction opposite to the flow direction, and having a pressure lower than the pressure pushing the heavy phase toward the discharge opening.
  • the discharging phase in addition to the axial movement has a swift rotary movement as well, the same result could be obtained by arranging in the discharge chamber a fixed screw impeller, the pitch of which is reversed to that of the screw-shaped track of the discharging phase. The relative movement between the fixed impeller and the rotating phase then creates the desired counter pressure.
  • the arrangement provides a non-rotary pumping means of the screw type in the discharge chamber 7 for retarding rotation of the rotating phase.
  • the retarding means is provided with a surface inclined in a direction reversed to that of the screw-shaped track of the discharging phase, and consists of a screw-shaped guide vane 12. It consists of a metal strip attached to the cylindrical wall of the discharge chamber by means of welding.
  • the retarding means consists of two radially arranged vanes 12a, closely resembling propeller vanes.
  • a circular impact plate 8 previously known per se, which is coaxial with the outlet 6 of the cyclone separator. This impact plate acts as a check on the axial movement of the discharging phase and increases in combination with the vanes 12a their controlling function.
  • the impact plate is supported by an upright 9.
  • FIG. 5 It is provided with a circular opening 13a coaxial with the discharge chamber 3. In this embodiment, the diameter of the opening 13a is smaller than that of the impact plate 8.
  • the impact plate 8 may be provided with a cylindrical flange 14, which is coaxial with the impact plate and arranged on its side facing the discharge opening 7. This flange 14 then forms a labyrinth together with the partition 13, through which rebounding heavy phase particles can hardly pass.
  • the said retarding means comprise those parts of a cylindrical bar 121) intersecting the axis of the discharge chamber, and perpendicular to the same, which are mainly situated in a plane with an inclination reversed to the pitch of the screw-shaped track of the separated phase. Also, when the rotating heavy phase impinges against the bar 12b, a pressure will arise which is directed upward.
  • the bar 12b forms a part of a duct which by means of a vertical branch 9 supports the impact plate 8 which is in this case provided with a central bore 11. The air or gas core formed nearest and around the axis of the vortex chamber is sucked out through the channel thus formed.
  • the arrangement need not be orientated as shown in the drawing. Its main axis may, for instance, be horizontal. Also the arrangement as a whole may equally well be turned upside down. Further modifications are possible too.
  • the partition 13 may consist of a plate provided with evenly distributed smaller orifices.
  • the retarding means may, of course, be arranged some other way than the ways now suggested. It may even be arranged in a discharge duct leading the separated phase from the discharge chamber, in which case such duct is considered as an extension part of the discharge chamber.
  • the treated material is a suspension in a liquid.
  • the invention is equally applicable, however, to suspensions in air or in a gas.
  • a cyclone separator forming a vortex chamber and a discharge chamber coaxial with the vortex chamber, said discharge chamber having at one end an inlet opening for receiving a separated phase from the vortex chamber and having at the opposite end a discharge opening, said vortex chamber having a tangential inlet for inducing rotation of a feed product in the separated phase from said fixed means to said discharge opening.
  • a cyclone separator according to claim 1 in which said discharge opening has a diameter larger than the diameter of the passage between the vortex chamber and said discharge chamber.
  • a cyclone separator according to claim 1 in which said discharge opening is coaxial with the discharge chamber.

Landscapes

  • Cyclones (AREA)
US00020539A 1969-03-21 1970-03-18 Cyclone separator Expired - Lifetime US3716137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE03959/69A SE357309B (fi) 1969-03-21 1969-03-21

Publications (1)

Publication Number Publication Date
US3716137A true US3716137A (en) 1973-02-13

Family

ID=20263227

Family Applications (1)

Application Number Title Priority Date Filing Date
US00020539A Expired - Lifetime US3716137A (en) 1969-03-21 1970-03-18 Cyclone separator

Country Status (9)

Country Link
US (1) US3716137A (fi)
CA (1) CA951650A (fi)
DE (1) DE2013499C3 (fi)
FI (1) FI52666C (fi)
FR (1) FR2039041A5 (fi)
GB (1) GB1280598A (fi)
NO (1) NO140969C (fi)
SE (1) SE357309B (fi)
SU (1) SU483819A3 (fi)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862041A (en) * 1972-03-16 1975-01-21 Klas Robert William Robinson Liquid suspension purifying unit
WO1987006502A1 (en) * 1986-04-23 1987-11-05 Noel Carroll Cyclone separator
FR2639559A1 (fr) * 1988-11-29 1990-06-01 Bull Sa Appareil pour separer et recuperer des particules solides de revelateur transportees par un flux gazeux
US20170050191A1 (en) * 2015-08-21 2017-02-23 Andritz Ag Hydrocyclone with Fine Material Depletion in the Cyclone Underflow

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5021165A (en) * 1987-06-10 1991-06-04 Conoco Specialty Products Oil and water separating system with hydrocyclone and floatation device
BR8807544A (pt) * 1987-06-10 1990-04-10 Conoco Specialty Prod Separador de liquidos e processo para separar componentes de uma mistura liquida
GB2491246B (en) * 2012-05-21 2013-05-15 Adey Holdings 2008 Ltd Separator device
RU2681031C1 (ru) * 2018-01-29 2019-03-01 федеральное государственное бюджетное образовательное учреждение высшего образования "Самарская государственная сельскохозяйственная академия" Гидроциклон-сгуститель
CN109647591B (zh) * 2019-01-31 2022-02-18 鑫明星环保科技有限公司 一种新型选粉机

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2236548A (en) * 1937-11-06 1941-04-01 William B Prouty Material disintegrating and air classifying system
US2252581A (en) * 1938-05-25 1941-08-12 Saint-Jacques Eugene Camille Selector
US2312706A (en) * 1938-11-19 1943-03-02 Nichols Eng & Res Corp Method and apparatus for separating heavy particles from paper pulp suspensions
US2375826A (en) * 1939-07-26 1945-05-15 Vickerys Ltd Vortex separator apparatus for treating paper pulp
US2767624A (en) * 1950-07-30 1956-10-23 Dorries A G Vorm Maschinenfabr Tubular hydroextractor for the purifying of suspensions, especially suspensions containing fibrous material
US2913112A (en) * 1956-11-26 1959-11-17 Dorr Oliver Inc Hydrocyclone control
US3105044A (en) * 1960-03-14 1963-09-24 Bird Machine Co Separator
US3235090A (en) * 1961-12-15 1966-02-15 Univ Oklahoma State Hydroclones
US3372532A (en) * 1965-08-17 1968-03-12 Centrifix Corp Dry separator
US3501014A (en) * 1968-06-13 1970-03-17 Univ Oklahoma State Regenerative hydrocyclone
US3513642A (en) * 1968-07-25 1970-05-26 Milan S Cornett Centrifugal dust separator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE419766A (fi) * 1936-01-31
BE490873A (fi) * 1948-09-15
GB700791A (en) * 1951-08-03 1953-12-09 English Electric Co Ltd Improvements in and relating to dust separators
US3136723A (en) * 1959-02-27 1964-06-09 Bass Brothers Entpr Inc Hydrocyclones
DE1220392B (de) * 1961-02-21 1966-07-07 Freiberg Papier Maschwerke Wirbelabscheider zum Reinigen von Aufschwemmungen, insbesondere Faserstoffaufschwemmungen

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2236548A (en) * 1937-11-06 1941-04-01 William B Prouty Material disintegrating and air classifying system
US2252581A (en) * 1938-05-25 1941-08-12 Saint-Jacques Eugene Camille Selector
US2312706A (en) * 1938-11-19 1943-03-02 Nichols Eng & Res Corp Method and apparatus for separating heavy particles from paper pulp suspensions
US2375826A (en) * 1939-07-26 1945-05-15 Vickerys Ltd Vortex separator apparatus for treating paper pulp
US2767624A (en) * 1950-07-30 1956-10-23 Dorries A G Vorm Maschinenfabr Tubular hydroextractor for the purifying of suspensions, especially suspensions containing fibrous material
US2913112A (en) * 1956-11-26 1959-11-17 Dorr Oliver Inc Hydrocyclone control
US3105044A (en) * 1960-03-14 1963-09-24 Bird Machine Co Separator
US3235090A (en) * 1961-12-15 1966-02-15 Univ Oklahoma State Hydroclones
US3372532A (en) * 1965-08-17 1968-03-12 Centrifix Corp Dry separator
US3501014A (en) * 1968-06-13 1970-03-17 Univ Oklahoma State Regenerative hydrocyclone
US3513642A (en) * 1968-07-25 1970-05-26 Milan S Cornett Centrifugal dust separator

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3862041A (en) * 1972-03-16 1975-01-21 Klas Robert William Robinson Liquid suspension purifying unit
WO1987006502A1 (en) * 1986-04-23 1987-11-05 Noel Carroll Cyclone separator
GB2209970A (en) * 1986-04-23 1989-06-01 Noel Carroll Cyclone separator
GB2209970B (en) * 1986-04-23 1990-12-05 Noel Carroll Cyclone separator
US4980064A (en) * 1986-04-23 1990-12-25 Conoco Specialty Products Inc. Cyclone separator with enlarged underflow section
FR2639559A1 (fr) * 1988-11-29 1990-06-01 Bull Sa Appareil pour separer et recuperer des particules solides de revelateur transportees par un flux gazeux
EP0371828A1 (fr) * 1988-11-29 1990-06-06 Bull S.A. Appareil pour séparer et récupérer des particules solides de révélateur transportées par un flux gazeux
US4996538A (en) * 1988-11-29 1991-02-26 Bull S.A. Apparatus for separating and recovering solid developer particles transported by a gaseous flow
US20170050191A1 (en) * 2015-08-21 2017-02-23 Andritz Ag Hydrocyclone with Fine Material Depletion in the Cyclone Underflow
US9884325B2 (en) * 2015-08-21 2018-02-06 Andritz Ag Hydrocyclone with fine material depletion in the cyclone underflow

Also Published As

Publication number Publication date
FI52666B (fi) 1977-08-01
NO140969C (no) 1979-12-19
GB1280598A (en) 1972-07-05
FI52666C (fi) 1977-11-10
FR2039041A5 (fi) 1971-01-08
DE2013499B2 (de) 1974-01-24
SU483819A3 (ru) 1975-09-05
CA951650A (en) 1974-07-23
NO140969B (no) 1979-09-10
DE2013499C3 (de) 1974-08-22
DE2013499A1 (de) 1970-10-15
SE357309B (fi) 1973-06-25

Similar Documents

Publication Publication Date Title
US4389307A (en) Arrangement of multiple fluid cyclones
US6077210A (en) Feed accelerator system including accelerating vane apparatus
US3507397A (en) Hydrocyclone unit
US2967618A (en) Vortical separator
US1735298A (en) Apparatus for collecting dust particles
US2377524A (en) Method of and means for separating solid particles in pulp suspensions and the like
US3885934A (en) Centrifugal tuyere for gas separator
US4378289A (en) Method and apparatus for centrifugal separation
US3163508A (en) Method and apparatus for separating gas from liquid rich foams or liquids containing entrained air
US4971603A (en) Vortex tube separating device
US3641745A (en) Gas liquid separator
US4278550A (en) Fluid separator
JPS62102847A (ja) 遠心分離機
FI913404A0 (fi) Menetelmä ja laite kaasun erottamiseksi kaasupitoisesta materiaalista
US3716137A (en) Cyclone separator
US3405803A (en) Vortex separator
BG61598B1 (bg) Сепаратор за разделяне на течност и газ
US2765867A (en) Method of separating dispersed gas from a liquid
US3105044A (en) Separator
JPS5930835B2 (ja) 紙原料水のスクリ−ニング装置
SE458038B (sv) Hydrocyklonanlaeggning foer separering av fibermassasuspension
US3415373A (en) Particle size classification method and apparatus
US2709501A (en) Purifier
US4257786A (en) Cyclone separator
US3893922A (en) Cylindrical cyclone centrifuges