US3268083A - Push-type centrifuge - Google Patents

Push-type centrifuge Download PDF

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Publication number
US3268083A
US3268083A US279452A US27945263A US3268083A US 3268083 A US3268083 A US 3268083A US 279452 A US279452 A US 279452A US 27945263 A US27945263 A US 27945263A US 3268083 A US3268083 A US 3268083A
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US
United States
Prior art keywords
push
pusher plate
liquid
drum
centrifuged
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Expired - Lifetime
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US279452A
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English (en)
Inventor
Ruegg Ernst
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.)
Sulzer Escher Wyss AG
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Escher Wyss AG
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Publication date
Application filed by Escher Wyss AG filed Critical Escher Wyss AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges

Definitions

  • This invention relates to a push-type centrifuge, with a centrifugal drum having screen holes and a pusher plate axially reciprocable relative to said drum, the centrifugal material being pushed stepwise over the inner surface of the drum by means of the annular push surface of said plate.
  • the centrifuged material is brought on to the inner surface of the drum between the inlet funnel and the push surface on the front of the pusher plate, and is moved on said inner surface towards the outlet end of the drum.
  • liquid is continuously separated through the screen holes, so that the material being centrifuged becomes increasingly drier.
  • the centrifuged material forms a stiffer layer, that is to say one which is more pushable, the drier it is, the still very wet part of the layer situated immediately in front of the push surface is decisive for the possible throughput of centrifuged material through the push-type centrifuge.
  • the throughput must be slow enough for the said wet part of the layer to have sufiicient time for the discharge of liquid so that the necessary stiffness, i.e. pushability, will be attained. This limits the performance of the centrifuge.
  • the pusher plate at least in the outer part of the region of its push surface, has screen holes for the discharge of liquid issuing from the centrifuged material.
  • FIG. 1 shows a vertical axial section through a pushtype centrifuge.
  • FIG. 2 shows a part of FIG. 1 on a larger scale.
  • FIG. 3 shows a part corresponding to FIG. 2 of another embodiment.
  • the push-type centrifuge shown in FIGS. 1 and 2 has a housing 1, in which is journalled a sieve drum formed by a centrifugal drum 3 provided with screen holes 2. Mounted in the centrifugal drum 3 is a reciprocable pusher plate 4 having an annular push surface 5, by means of which the centrifuged material is pushed stepwise over the inner surface 6 of the drum.
  • the supply of material to be centrifuged is 'by means of a pipe 7 and an inlet funnel 8.
  • a collector 9 At the open outlet end of the centrifugal drum 3 is mounted a collector 9 for the discharge of the dried solid material. The separated liquid is collected in troughs 10.
  • the pusher plate 4 has in its push surface screen holes 11 for the discharge of the liquid issuing from the centrifuged material.
  • screen holes are provided over the entire region of the push surface.
  • the screen holes may also be restricted, however, to the outer part of the annular push surface.
  • the screen holes 11 of the push surface 5 are located in a screen 12 mounted on the front of the pusher plate 4 and resting on webs 13 of the pusher plate 4.
  • the webs 13 leave free between each other liquid discharge chambers 14, and extend concentrically to the centrifugal drum 3.
  • the faces of the webs 13 which are turned towards the axis of the drum define annular collecting troughs 15 for the liquid issuing from the screen 12.
  • These collecting troughs 15 have an end which is more remote from the drum axis than the trough walls.
  • Radial discharge Openings 16 are provided in the bottom of the collecting troughs. Liquid ducts, that is to say bores 17, lead the liquid to the back of the pusher plate 4.
  • a pusher plate 18 is provided with a frusto-conical push surface 19, which diverges in the direction toward the open outlet end of the centrifugal drum.
  • a device which discharges part of the liquid issuing through the pusher plate away from the pusher plate in the axial direction of the centrifugal drum.
  • This device has an axially projecting guide ring 20 which is mounted in the vicinity of the pusher plate periphery, rigidly secured to the pusher plate 18, and forms a pointed cone.
  • the liquid flowing over the guide ring is always supplied to a part of the centrifugal drum which is less loaded with liquid.
  • the guide ring prevents the liquid issuing from the ducts 21 of the pusher plate 18 from impinging directly on the surface of the centrifugal drum.
  • a push-type centrifuge of the type including a rotary, foraminous drum having an open end, and a reciprocable pusher plate having an outer annular portion, that portion being arranged to move material to be centrifuged stepwise along the foraminous drum toward said open end, the improvement which comprises a screen mounted on the front of the outer annular portion of the pusher plate; and annular webs forming said outer annular portion of the plate and supporting said screen, said we'bs defining concentric annular discharge chambers for liquid separated from the material to be centrifuged, each chamber including a drainage duct extending through said outer annular portion, and ducts serving to distribute the separated liquid longitudinally along the foraminous drum.
  • the push-type centrifuge defined in claim 1 which References Cited by the Examiner comprises means for leading the liquid discharged on the rear side of the pusher plate away therefrom in the axial UNITED STATES PATENTS direction 2,232,770 2/1941 Buddeberg 210-376 X 4.
  • the push-type centrifuge defined in claim 3 in which 5 3,136,721 6/1964 Gooch 210376 said means for leading the liquid away from the pusher plate comprise an axially p projecting guide ring REUBEN FRIEDMAN, Primary Examiner. connected to the rear side of the pusher plate adjacent its outer periphery. I. DECESARE, Assistant Examiner.

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  • Centrifugal Separators (AREA)
US279452A 1962-06-04 1963-05-10 Push-type centrifuge Expired - Lifetime US3268083A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH670962A CH400910A (de) 1962-06-04 1962-06-04 Schubzentrifuge

Publications (1)

Publication Number Publication Date
US3268083A true US3268083A (en) 1966-08-23

Family

ID=4313816

Family Applications (1)

Application Number Title Priority Date Filing Date
US279452A Expired - Lifetime US3268083A (en) 1962-06-04 1963-05-10 Push-type centrifuge

Country Status (4)

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US (1) US3268083A (de)
CH (1) CH400910A (de)
DE (1) DE1209507B (de)
GB (1) GB1047434A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122014A (en) * 1976-03-30 1978-10-24 Wmv-Apparatebau Centrifuge for removing liquid media adhering to chips, turnings, borings or the like
US5380266A (en) * 1991-11-27 1995-01-10 Baker Hughes Incorporated Feed accelerator system including accelerator cone
US5401423A (en) * 1991-11-27 1995-03-28 Baker Hughes Incorporated Feed accelerator system including accelerator disc
US5520605A (en) * 1991-12-31 1996-05-28 Baker Hughes Incorporated Method for accelerating a liquid in a centrifuge
US5651756A (en) * 1991-11-27 1997-07-29 Baker Hughes Inc. Feed accelerator system including feed slurry accelerating nozzle apparatus
EP1468741A1 (de) * 2003-04-16 2004-10-20 Ferrum AG Doppelschubzentrifuge
EP1468742A1 (de) * 2003-04-16 2004-10-20 Ferrum AG Mehrstufige Schubzentrifuge
US20040206687A1 (en) * 2003-04-16 2004-10-21 Ferrum Ag Double pusher centrifuge
US20040206689A1 (en) * 2003-04-16 2004-10-21 Ferrum Ag Multi-stage pusher centrifuge
US20210316235A1 (en) * 2019-11-18 2021-10-14 Lg Chem, Ltd. Pressurizing centrifugal dehydrator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706501C2 (de) * 1977-02-16 1982-07-29 Otwin Dipl.-Ing. Dr. 7000 Stuttgart Imhof Dem Filterkuchen zugewandte Oberfläche eines Kreisringes eines Schubbodens einer Schubzentrifuge
DE3410423A1 (de) * 1984-03-21 1985-10-03 Krauss-Maffei AG, 8000 München Verfahren und vorrichtung zum trennen von stoffgemischen
DE102012101787A1 (de) 2012-03-02 2013-09-05 Andritz Kmpt Gmbh Schubzentrifuge und Verfahren zum Betreiben einer Schubzentrifuge

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2232770A (en) * 1938-02-25 1941-02-25 Albert T Otto & Sons Inc Centrifugal machine
US3136721A (en) * 1961-03-31 1964-06-09 Pennsalt Chemicals Corp Centrifugal solids dryer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575942C (de) * 1929-02-13 1933-05-04 Gustav Ter Meer Dr Ing In einer zylindrischen Siebtrommel beweglicher Vorschubkolben fuer das Schleudergut
DE1822890U (de) * 1959-04-17 1960-12-01 Heine Geb Schubboden fuer eine schubzentrifuge.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2232770A (en) * 1938-02-25 1941-02-25 Albert T Otto & Sons Inc Centrifugal machine
US3136721A (en) * 1961-03-31 1964-06-09 Pennsalt Chemicals Corp Centrifugal solids dryer

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122014A (en) * 1976-03-30 1978-10-24 Wmv-Apparatebau Centrifuge for removing liquid media adhering to chips, turnings, borings or the like
US5658232A (en) * 1991-11-27 1997-08-19 Baker Hughes Inc. Feed accelerator system including feed slurry accelerating nozzle apparatus
US5651756A (en) * 1991-11-27 1997-07-29 Baker Hughes Inc. Feed accelerator system including feed slurry accelerating nozzle apparatus
US5380266A (en) * 1991-11-27 1995-01-10 Baker Hughes Incorporated Feed accelerator system including accelerator cone
US5527258A (en) * 1991-11-27 1996-06-18 Baker Hughes Incorporated Feed accelerator system including accelerating cone
US5401423A (en) * 1991-11-27 1995-03-28 Baker Hughes Incorporated Feed accelerator system including accelerator disc
US5551943A (en) * 1991-12-31 1996-09-03 Baker Hughes Incorporated Feed accelerator system including accelerating vane apparatus
US5632714A (en) * 1991-12-31 1997-05-27 Baker Hughes Inc. Feed accelerator system including accelerating vane apparatus
US5520605A (en) * 1991-12-31 1996-05-28 Baker Hughes Incorporated Method for accelerating a liquid in a centrifuge
US5840006A (en) * 1991-12-31 1998-11-24 Baker Hughes Incorporated Feed accelerator system including accelerating vane apparatus
EP1468742A1 (de) * 2003-04-16 2004-10-20 Ferrum AG Mehrstufige Schubzentrifuge
EP1468741A1 (de) * 2003-04-16 2004-10-20 Ferrum AG Doppelschubzentrifuge
US20040206687A1 (en) * 2003-04-16 2004-10-21 Ferrum Ag Double pusher centrifuge
US20040206689A1 (en) * 2003-04-16 2004-10-21 Ferrum Ag Multi-stage pusher centrifuge
US7017756B2 (en) 2003-04-16 2006-03-28 Ferrum Ag Multi-stage pusher centrifuge
US7025211B2 (en) 2003-04-16 2006-04-11 Ferrum Ag Double pusher centrifuge
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

Also Published As

Publication number Publication date
GB1047434A (de)
DE1209507B (de) 1966-01-20
CH400910A (de) 1965-10-15

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