US3275142A - Method and apparatus for emptying and filling centrifuges - Google Patents

Method and apparatus for emptying and filling centrifuges Download PDF

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Publication number
US3275142A
US3275142A US302433A US30243363A US3275142A US 3275142 A US3275142 A US 3275142A US 302433 A US302433 A US 302433A US 30243363 A US30243363 A US 30243363A US 3275142 A US3275142 A US 3275142A
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Prior art keywords
rotor
centrifuge
pipe
centrifuges
filling
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Expired - Lifetime
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US302433A
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English (en)
Inventor
Sven G Ekegren
Per V H Bladh
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Alfa Laval Holdings Amsterdam AB
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Separator AB
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Publication date
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • D06B15/10—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by use of centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor

Definitions

  • This invention relates to centrifugation of materials, especially compressible fibrous materials, fand has particular reference to an improved method and apparatus for filling the centrifuge with such material and emptying it of the centrifuged material.
  • the wool is freed of wool fat and impurities by Washing it with a suitable organic solvent, usually white spirits or the like.
  • a suitable organic solvent usually white spirits or the like.
  • the wool is then freed as completely as possible of the washing liquid, generally and preferably by a centrifugation of the wet wool wherein the centrifugally separated liquid is recovered and returned to the washing operation.
  • centrifuge filling and emptying apparatus can be used with previously installed, conventional centrifuges without requiring any modification thereof, and a complete automation of the centrifuge operation can easily be effected at reasonable costs.
  • the centrifuge Since the discharge and the filling are entirely mechanized, the centrifuge does not need to be opened at any moment during the operation, which ensures a better protection of the operators and facilitates the scavenging in the factory. Also, the problem of transportation of the centrifuged material is solved in an advantageous manner.
  • the centrifuged material is discharged through an exhaust pipe which is introduced into the centrifuge rotor during operation,
  • two centrifuges are operated alternately in such way that each centrifuge is filled while the other is being discharged, and automatic devices control the alternate discharge and filling of the centrifuges.
  • the centrifuge filling and emptying apparatus comprises the aforesaid exhaust pipe reference being made to the attached drawing in which the single illustration is a schematic side-elevational view, partly in section, of a plant provided with two alternatingly operating centrifuges according to the invention.
  • centrifuges as illustrated are strictly alike both in size, type and equipment. Therefore, corresponding parts of the two are marked with the same reference numerals, those for centrifuge A having the sux a added.
  • Reference numeral 1 designates the housing of the centrifuge and 2 its rotor.
  • a pipe 3 is telescopically arranged inside an exhaust pipeline 4 connected to the centrifuge from above and at one side of the vertical axis of the Irotor.
  • Pipe 3 is displaceable axially (parallel to the rotor axis) so that it can be inserted into and With-- drawn from the centrifuge rotor 2 Vthrough its open top.
  • pipe 3 may be telescopically arranged outside the exhaust pipeline 4, so that the pipe 3 can be inserted in and withdrawn from the centrifuge rotor 2 eccentrically in relation to the rotor axis and radially within or in the proximity to the centrifuged material, which is pressed against the inside of the rotor wall by the centrifugal force.
  • the end 6 of the pipe 3 which faces the centrifuge is bevelled, preferably in such way that its edge plane forms an angle of about 45 with the nearest generating line of the rotor wall, which angle ensures optimum exhaust when discharging the centrifuge by approximating the angle of the surface of the material.
  • the insertion of pipe 3 into and its withdrawal from the centrifuge rotor are caused by control means comprising a pneumatically or hydraulically actuated cylinder 5 hinged at its upper end to a container 10, as shown at 14, and a piston in the cylinder having a hinged connection 15 to the upper portion of pipe 3.
  • Reference numeral t8 designates a conveyor, shown schematically, which supplies the non-centrifuged stock to the plant. 'Ilhis stock is dis-tributed alternately to the centrifuges A and B from conveyor 8 by a reversibleconveyor 9.
  • the conveyor 9 supplies the non-centrifuged stock into the open top of a funnel-like storage andV and 18 for actuating the respective sectionsk of the damper .11.1 l
  • the peripheral wall of the rotor 2 is provided with smal-l perforations (not shown) so that the separated washing liquid can be ejected centrifugally and collectedin the centrifuge housing 1,y from which it may be discharged through pipe 20.
  • the centrifuge housing 1 may lbe provided with a cover (not shown) through which the exhaust pipe 4 as well as the outlet of the container 10 penetrate slightly into the centrifuge rotor 2.
  • cover or the top of the centrifuge housing 1 can be provided with a-djustable louvers (not shown). It will be understood that rotor 2 is supported and driven from below by a vertical shaft 2'1 projecting centrally through the bottom of stationary housing 1.l
  • the high speed centrifuging is then carried out for a time period suliicient to effect the desired removal of Washing liquid from the material through the perforated rotor Wall, after which the'rotor speed is reduced and pipe 3 is lowered axially into the rotor by operation of the con- 'trol means including cylinder 5;
  • This discharge is facilitated by the tendency of the centrifuged material to expand radially inward toward the rotor axis as the centri-
  • the above-described apparatus is operated fully automatically. That is, the displacements ofthe pipes 3 and 3a into and out of the centrifuges, the decrease -an'd increase of the rotational speed of the centrifuges, the switching over and the control of the damper in the exhaust pipeline 7 and of the dampers 11 and 11a, and the reversing of the conveyor 9, are con- -trolled 4and synchronized by a suitable program-unit so that the ⁇ centrifuges operate alternately as previously described.
  • the invention is not limited to the treatment of compressible and fibrous materia-ls but can also be used in the centrifugation of all kinds of solid materials suitable for air-bornev transportation.
  • the method which comprises filling the rotor with said material while accelerating the rotor to an yoperating speed for centrifuging said material, forming an annular body of centrifuged materialV in the outer part of the rotor, introducing said pipe into the rotor and in proximity tolsaid vbody while ⁇ reducing the rotor speed, inducingfa suction in said pipe whereby material is sucked from the rotating bodyby the pipe and discharged from the rotor, ⁇ withdrawing said pipe from the rotor, andreiilling the ⁇ rotor i with ,a new batch of said materialwhile accelerating the rotor to said operating speed.
  • Apparatus for centrifuging compressible brous material which comprises a centrifugal rotor, a discharge pipeline leading from the rotor, a tubular suction member telescopically fitted relative to the pipeline and movable axially thereof into the rotor'to suck centrifuged material from the outer part of the rotor, suction means com-munieating with said pipeline and tubular member, and control means for moving the tubular member relative to the pipeline and into the rotor and for withdrawing the tubular member from the rotor relative to the pipeline.
  • sai-dicontrolmeans include an actuating cylinder and piston.
  • Apparatus for centrifulging compressible fibrous material which comprises a pair of centrifugal rotors, a discharge pipeline leading from each rotor, a tubular suction member telescopically fitted relative to each pipe. line and movable axially thereof into the corresponding rotor to suck centrifuged material from the outer partV of the rotor,suction means communicatingwith eachY pipeline and each tubular member, control'means for moving each tubular member relative to the corresponding pipeline and into the corresponding .rotor and 1 for withdrawing each ,tubular member from the corresponding rotor relative to ⁇ the corresponding pipeline, said control means being ad-apted to ⁇ move each .tubular member independently of theV other -tubular member, a discharge pipe common to Vsaid rotors and to which said discharge pipelines lead, and supply control means for admitting material alternately to said rotors.
  • the method which comprises ⁇ repeatedly performing a first series of steps including 4filling the first rotor with said material from a supply source, accelerating the iirst rotor to an operating speed for centrifuging said material as ythe iirst rotor is being filled, forming an ,annular body of centrifuged materia-l in the outer part of the filled first rotor, introducing the first pipe ,into the iirst rotor and in proximity ⁇ to said body therein While reducing ⁇ the iirst rotor speed, inducing a suction in said 4lirst pipe whereby material is sucked from the rotating body by the 'first pipeand discharged fromthe first rotor, and withdrawing said first pipe from the iirstrotor prior to refilling

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Drying Of Solid Materials (AREA)
US302433A 1962-08-27 1963-08-15 Method and apparatus for emptying and filling centrifuges Expired - Lifetime US3275142A (en)

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SE926262 1962-08-27

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US3275142A true US3275142A (en) 1966-09-27

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BE (1) BE636586A (forum.php)
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474905A (en) * 1964-03-03 1969-10-28 Titus Hans Joachim Method and apparatus for discharging solid material from a centrifuge
US5581904A (en) * 1993-08-26 1996-12-10 Freshpac Machinery Pty. Ltd. Centrifugal dryer
US20030233765A1 (en) * 2002-04-30 2003-12-25 Alan Heinzen Centrifugal dryer and method
US20040211081A1 (en) * 2002-04-30 2004-10-28 Alan Heinzen Canted manually loaded produce dryer
US20210316235A1 (en) * 2019-11-18 2021-10-14 Lg Chem, Ltd. Pressurizing centrifugal dehydrator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2326670A1 (fr) * 1975-10-03 1977-04-29 Rousselet Joseph Installation pour la deshydratation de matieres textiles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1048905A (en) * 1905-02-25 1912-12-31 Elmer A Sperry Centrifugal machine.
US2360455A (en) * 1942-08-01 1944-10-17 Vilter Mfg Co Centrifuge
US2614134A (en) * 1950-06-21 1952-10-14 Standard Oil Dev Co Purification of crystalline substances
US2828020A (en) * 1954-04-09 1958-03-25 Western States Machine Co Safety device for centrifugal machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1048905A (en) * 1905-02-25 1912-12-31 Elmer A Sperry Centrifugal machine.
US2360455A (en) * 1942-08-01 1944-10-17 Vilter Mfg Co Centrifuge
US2614134A (en) * 1950-06-21 1952-10-14 Standard Oil Dev Co Purification of crystalline substances
US2828020A (en) * 1954-04-09 1958-03-25 Western States Machine Co Safety device for centrifugal machines

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3474905A (en) * 1964-03-03 1969-10-28 Titus Hans Joachim Method and apparatus for discharging solid material from a centrifuge
US5581904A (en) * 1993-08-26 1996-12-10 Freshpac Machinery Pty. Ltd. Centrifugal dryer
US20030233765A1 (en) * 2002-04-30 2003-12-25 Alan Heinzen Centrifugal dryer and method
US20040211081A1 (en) * 2002-04-30 2004-10-28 Alan Heinzen Canted manually loaded produce dryer
US7028415B2 (en) 2002-04-30 2006-04-18 Alan Heinzen Canted manually loaded produce dryer
US20210316235A1 (en) * 2019-11-18 2021-10-14 Lg Chem, Ltd. Pressurizing centrifugal dehydrator
US11833458B2 (en) * 2019-11-18 2023-12-05 Lg Chem, Ltd. Pressurizing centrifugal dehydrator

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BE636586A (forum.php)
GB1027361A (en) 1966-04-27

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