US3754655A - Vortex-type slurry separator - Google Patents

Vortex-type slurry separator Download PDF

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Publication number
US3754655A
US3754655A US00224011A US3754655DA US3754655A US 3754655 A US3754655 A US 3754655A US 00224011 A US00224011 A US 00224011A US 3754655D A US3754655D A US 3754655DA US 3754655 A US3754655 A US 3754655A
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US
United States
Prior art keywords
vortex
outer vortex
chamber
eddy
improvement
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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
Application number
US00224011A
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English (en)
Inventor
E Troland
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.)
Bird Machine Co Inc
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Bird Machine Co Inc
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 Bird Machine Co Inc filed Critical Bird Machine Co Inc
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Publication of US3754655A publication Critical patent/US3754655A/en
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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
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B04C5/18—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations with auxiliary fluid assisting discharge

Definitions

  • ABSTRACT s2 u.s. c1 210/209, 210/512, 209/211 vomx-type Slurry Separator dilution liquid is intro- 5 1 1 1m. (:1. B04c 5/18 qud through an eddy chamber adjacent separator 58 Field of Search 210/512, 209; body chamber having a transfer openins which 209 /21 1 tends through the wall of the body to allow overlap of a dilution liquid body with the outer vortex in the sepa- 5 References Cited rator, so that the liquid will pass smoothly into the outer vortex by eddy current transfer.
  • Dilution is commonly carried out in a vortex separator both to aid separation by reducing consistency in the outer vortex, and, by reducing the bleed rate (i.e., the fraction of solids in the original slurry appearing in the rejects flow), to decrease the amount of acceptable stock lost.
  • diluent has been introduced through a nozzle-like opening in a converging outlet section of the separator body.
  • the diluent has been introduced downstream of such converging section, through an additional diverging frustoconical wall of an elutriation chamber, e.g. as shown in US. Pat.
  • the invention makespossible excellent mixing of dilution liquid into the outer vortex, with simple controls (e.g., without an undesireable highly sensitive relationship between bleed rate and the dilution liquid flow rate, which complicates bleed rate control), and with reliable, inexpenisve apparatus. Easy access to the rejects orifice is provided. Separation efficiency is high. The dilution can be carried out sufficiently upstream of the rejects orifice to permit reconcentration of the rejects.
  • the separator has a fubular ylindrical section 12 and a downwardly converging generally frusto-conical section 14 terminating in rejects orifice 16. At the upper end of portion 12 are tangential slurry inlet 18 and outlet 20 with vortex finder 22 aligned with the separator axis.
  • the separator is laterally enlarged to provide a housing having an internal cylindrical wall 32 which curves smoothly about axis 34 generally parallel to the main separator axis 36 to form an eddy chamber 38.
  • the chamber has a tan-' gential inlet 40 and a transfer opening 42 which opens into the adjacent portion of the separator proper which is formed by a second cylindrical wall 44 in housing 30.
  • the separator wall 44 and wall 32 in crosssection transverse to axes 34 and 36, follow overlapping circles. Edges 46 and 48 are rounded slightly.
  • the slurry to be separated is supplied under pressure to inlet 18.
  • separators of general, however, the stock, as it flows about and along 3 i ameter of the separator body at the transfer opening;
  • the transfer opening communicates with the converging section intermediate the maximum and minimum diameters thereof.
  • FIG. 1 is an elevational view, partly sectioned, of a transfer opening with respect to the outer vortex
  • theinside diameter of chamber 38 is preferably between one-sixth and 6 times that of the body 1 10 at opening 42 (average diam'etersbeing used if either the chamber or the separatortaper at opening 42). Too small an eddy chamber would unduly limit dilution.
  • the eddy chamber should be located along the separator axis so that at least 10 percent of the axialextent of body. 10 lies downstream of the at least 40 percent lies upstream of the transfer opening; in this respect location of the transfer opening too close to orificel6 causes'an overly sensitive dilution rate-bleed rate relationship, and location too far-from the orifice results in an excessively high dilution water requirement for a given reduction in bleed rate.
  • Opening 42 should be at least as large as inlet 18, to avoid plugging, and should otherwise be dimensioned so as to preserve true eddy flow in chamber 38 without unduly limiting transfer through the opening.
  • the extent of dilution inlet 40 along axis 34 should be close enough to the axial extent of chamber 38 itself to allow the eddy flow to cover the entire internal vertical wall of the chamber.
  • a vortex-type slurry separator having a tubular body for containing slurry flowing in a pattern including an outer vortex flowing generally toward one outlet and an inner vortex flowing generally toward another outlet, that improvement consisting of apparatus for introducing dilution liquid into said outer vortex, said apparatus comprising a housing positioned adjacent said body and having an internal wall extending smoothly about an axis to form an eddy chamber, said wall having an inlet for introduction of dilution liquid to cause said liquid to form an eddy in said chamber, and a transfer opening which extends through the wall of said body to allow said eddy to overlap said outer vortex, whereby said liquid will pass smoothly into said outer vortex by eddy current transfer.

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  • Cyclones (AREA)
US00224011A 1972-02-07 1972-02-07 Vortex-type slurry separator Expired - Lifetime US3754655A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22401172A 1972-02-07 1972-02-07

Publications (1)

Publication Number Publication Date
US3754655A true US3754655A (en) 1973-08-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00224011A Expired - Lifetime US3754655A (en) 1972-02-07 1972-02-07 Vortex-type slurry separator

Country Status (7)

Country Link
US (1) US3754655A (cs)
JP (1) JPS563103B2 (cs)
CA (1) CA1021269A (cs)
FI (1) FI53192C (cs)
GB (1) GB1369785A (cs)
IT (1) IT977694B (cs)
SE (1) SE390899B (cs)

Cited By (6)

* 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
US4151083A (en) * 1974-09-10 1979-04-24 Dove Norman F Apparatus and method for separating heavy impurities from feed stock
DE3029978A1 (de) * 1979-08-10 1981-02-26 Domtar Inc Verfahren zum reinigen von holzschliff und vorrichtung zur durchfuehrung des verfahrens
US4790666A (en) * 1987-02-05 1988-12-13 Ecolab Inc. Low-shear, cyclonic mixing apparatus and method of using
US5769243A (en) * 1996-07-30 1998-06-23 Thermo Black Clawson Inc. Through-flow cleaner with improved inlet section
US8506824B1 (en) * 2012-05-16 2013-08-13 Charles M. Schloss Method for separating putrescible organic matter from inorganic grit suspended in waste water and sewage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141179U (cs) * 1974-09-20 1976-03-26
FI64746C (fi) * 1981-10-29 1984-01-10 Nobar Ky Foerfarande och anordning foer separering av ett medium i komponenter med olika partikelmassor
JP7739159B2 (ja) * 2021-12-09 2025-09-16 キヤノン株式会社 サイクロン装置を用いる処理方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799208A (en) * 1955-04-29 1957-07-16 Scott Harold Eric Baliol Vortex type separators
US3130157A (en) * 1958-12-15 1964-04-21 Denis F Kelsall Hydro-cyclones
US3277926A (en) * 1964-08-18 1966-10-11 Celleco Ab Vortex type separator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799208A (en) * 1955-04-29 1957-07-16 Scott Harold Eric Baliol Vortex type separators
US3130157A (en) * 1958-12-15 1964-04-21 Denis F Kelsall Hydro-cyclones
US3277926A (en) * 1964-08-18 1966-10-11 Celleco Ab Vortex type separator

Cited By (6)

* 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
US4151083A (en) * 1974-09-10 1979-04-24 Dove Norman F Apparatus and method for separating heavy impurities from feed stock
DE3029978A1 (de) * 1979-08-10 1981-02-26 Domtar Inc Verfahren zum reinigen von holzschliff und vorrichtung zur durchfuehrung des verfahrens
US4790666A (en) * 1987-02-05 1988-12-13 Ecolab Inc. Low-shear, cyclonic mixing apparatus and method of using
US5769243A (en) * 1996-07-30 1998-06-23 Thermo Black Clawson Inc. Through-flow cleaner with improved inlet section
US8506824B1 (en) * 2012-05-16 2013-08-13 Charles M. Schloss Method for separating putrescible organic matter from inorganic grit suspended in waste water and sewage

Also Published As

Publication number Publication date
SE390899B (sv) 1977-01-31
CA1021269A (en) 1977-11-22
FI53192B (cs) 1977-11-30
JPS563103B2 (cs) 1981-01-23
FI53192C (cs) 1978-03-10
JPS4891656A (cs) 1973-11-28
GB1369785A (en) 1974-10-09
IT977694B (it) 1974-09-20

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