US3428182A - Centrifugal machine - Google Patents

Centrifugal machine Download PDF

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Publication number
US3428182A
US3428182A US628316A US3428182DA US3428182A US 3428182 A US3428182 A US 3428182A US 628316 A US628316 A US 628316A US 3428182D A US3428182D A US 3428182DA US 3428182 A US3428182 A US 3428182A
Authority
US
United States
Prior art keywords
cone
disc
basket
accelerator
centrifugal
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
US628316A
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English (en)
Inventor
Henrich Hillebrand
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.)
BMA Braunschweigische Maschinenbauanstalt AG
Original Assignee
BMA Braunschweigische Maschinenbauanstalt AG
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 BMA Braunschweigische Maschinenbauanstalt AG filed Critical BMA Braunschweigische Maschinenbauanstalt AG
Application granted granted Critical
Publication of US3428182A publication Critical patent/US3428182A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor

Definitions

  • a basket of up- Wardly flaring frusto-conical form whose inner surface is constituted by a perforated screen, is rotated on its vertical axis; the hub of the basket extends inwardly into the basket and may be provided with a charge disc and an accelerating cone flaring towards the bottom of the basket.
  • a flat charging disc is secured in peripherally spaced relationship to the accelerating cone, eg., by providing intermediate stays, or directly to the hub of the centrifugal.
  • the stock mixture is centrally supplied to the charging disc and, after having been distributed thereon, passes onto the inner wall of the accelerator cone where it travels in the direction of the bottom of the basket, under simultaneous acceleration to the respective peripheral speed of the cone envelope, and is centrifuged over the lower rim of the cone onto the periphery of the separator screen.
  • the charge disc is recessed, preferably semispherically or in form of a calotte, and the wall of the accelerator cone has, at the level of the rim of the disc, an angle of divergence from the vertical which is greater than that of the remaining cone envelope.
  • the disc By designing the charge disc in form of a trough, which receives the massecuite, the disc contains at all times a certain amount of the stock material which is spun off, depending on the amount of the subsequently received material, over the upper rim of the disc. Therefore, even if the jet of the material is disrupted, lengths thereof are retained on the disc and are entrained by the contact with the material present thereon. As they need some time to reach the upper rim of the disc, they can be distributed over the whole circumference of the disc and cannot glide off without being sufficiently accelerated as it happened with at discs.
  • the invention provides further for a feed funnel centrally disposed above said disc so as to feed the charge independently of the position of the stock inlet or feed conduit into the troughshaped recess in the center of the disc.
  • annular slots formed at the transfer points between the rim of the disc and the accelerator cone, and between the accelerator cone and the less inclined zone of the basket, should be kept as small as possible to ensure approximately tangential impact of the material on the respective impinged surfaces of the cone or centrifugal.
  • the centrifugal illustrated in the drawing includes the frusto-conical basket 1 having its large diameter end at the top.
  • the basket has a hub 2 which is secured on shaft 3. Said shaft 3 and hub 2 project into the basket 1.
  • the hub 2 and the feed disc 4 are enclosed by an accelerator cone 6 which, at the level of the rim 7 of the disc, has a zone of lesser inclination 8, i.e. an area of the envelope whose angle of divergence from the vertical is greater than the angle of the remaining envelope.
  • the accelerator cone 6 is supported by stays 17 connected to the disc 4, whereby said stays are relatively thin and arranged in the upper third of the cone.
  • the accelerator cone 6 is provided with an upper central aperture 9 through which the material is charged onto the disc 4 into the trough-like recess 5 thereof.
  • a feed funnel 10 disposed below the admission conduit 11 directs the material into the trough of the disc 4.
  • the feed funnel is connected by any suitable support means to a stationary member of the centrifugal, e.g. to its housing.
  • the inlet conduit 11 can, if desired, be sunk into the funnel 10.
  • the basket 1 is enclosed by a housing 12 which has a base plate 13 receiving the shaft 3.
  • the accelerator cone 6 extends over the hub 2 downwardly to the bottom 14 of the basket 1. At the level of the lower rim 15 of the cone 6, said bottom 14 is provided with an inner wall 16 which has a lesser inclination than the remaining walls of the frusto-conical centrifugal. As will be seen on viewing the drawing, the angles between the horizontal plane and the fiat-conical area 8 of the accelerator cone 6 as well as between the horizontal plane and the area 16 of the bottom 14 of the centrifugal, are both less than 45
  • the feed funnel 10 ensures the stock material to be charged into the center of the trough 5 of the distributor disc 4 where, due to the rotary motion of the disc 4 rotating with the centrifugal, the material, while being entrained in the direction of rotation, travels upwardly and passes over the upper rim 7 of the disc onto the area 8 of lesser inclination of the accelerator cone.
  • the material travels along the inner wall of the accelerator cone to its lower rim 15 and is transferred to the conical zone 14 of small inclination of the bottom 14 of the basket.
  • the trough-shaped design of the disc 4 as well as the conical areas 8 and 14 of relatively small inclination of the accelerator cone 6 and the basket bottom 14, respectively, provide for an improved homogeneous distribution of the charged material on the periphery of the accelerator cone and on the screen of the basket 1.
  • the slots between the upper rim 7 of the disc 4 and the zone 8, and between the lower rim 15 of the cone 6 and the zone 16 of basket bottom 14 are kept relatively narrow. Said narrow slots, in coaction with the respective conical areas of relatively small inclination, ensure an approximately tangential impact of the massecuite at a peripheral speed which corresponds approximately to the peripheral speed of the respective point of impact.
  • a centifugal machine of the character wherein a generally frusto-conical basket means having an upwardly and outwardly flaring discharge end and a perforated screen surface is mounted on a shaft for rotation about a vertical axis, said basket being provided with a central hub means projecting upwardly into the basket, distributing disc means and accelerating cone means concentrically supported on said hub means within the basket means, said distributing disc means being provided with a generally hemispherically shaped dnwnwardly extending concentrically arranged recess for receiving material to be centrifuged, said accelerating cone means having a downwardly and outwardly flaring discharge end and being provided with a central opening at its upper end to permit downward flow of material into said recess in the distributing disc means, the inner surface of the accelerating cone means being divided by a medial horizontal plane into upper and lower portions; the angle of flare with respect to said horizontal plane of said upper portion being substantially less than the angle of flare of the lower portion, whereby material received on said upper portion
  • a centrifugal machine as claimed in claim 1 comprising thin supporting stay means connecting the upper third of said accelerator means with said hub.
  • a centrifugal machine as claimed in claim 1 comprising thin supporting stay means connecting the upper third of said accelerator means with said disc means.
  • a centrifugal machine as claimed in claim 1 comprising a feed funnel arranged centrally above the recess of said disc means.

Landscapes

  • Centrifugal Separators (AREA)
US628316A 1966-04-07 1967-04-04 Centrifugal machine Expired - Lifetime US3428182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1966B0086582 DE1288988C2 (de) 1966-04-07 1966-04-07 Kontinuierlich arbeitende Siebzentrifuge, insbesondere Zuckerzentrifuge

Publications (1)

Publication Number Publication Date
US3428182A true US3428182A (en) 1969-02-18

Family

ID=6983429

Family Applications (1)

Application Number Title Priority Date Filing Date
US628316A Expired - Lifetime US3428182A (en) 1966-04-07 1967-04-04 Centrifugal machine

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US (1) US3428182A (de)
DE (1) DE1288988C2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718945A (en) * 1981-07-25 1988-01-12 Braunschweigische Maschinenbauanstalt Ag Sugar centrifuge
US20070261571A1 (en) * 2004-10-22 2007-11-15 Esteve Felipe Maria M Liquefier
US10513746B2 (en) 2016-10-18 2019-12-24 Western States Machine Company Continuous centrifuge systems with multiple-stage mixing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2306302C3 (de) * 1973-02-08 1981-08-20 Bojcov, Aleksandr Ivanovič, Penza Zentrifugenrotor mit um seine Achse angeordneten schaufelartig gekrümmten Siebflächen
DE2436044C3 (de) * 1974-07-26 1986-07-31 Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig Kontinuierlich arbeitende Siebzentrifuge, insbesondere Zuckerzentrifuge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2343327A (en) * 1939-08-08 1944-03-07 R Y P Mfg Co Fruit and vegetable juice extractor
US2883054A (en) * 1955-02-04 1959-04-21 Federico G Sanchez Centrifugal separator
US3226257A (en) * 1961-10-09 1965-12-28 American Factors Ass Ltd Continuous centrifugal apparatus
US3276591A (en) * 1962-12-05 1966-10-04 Krauss Maffei Ag Apparatus for treating suspensions
US3302794A (en) * 1964-10-30 1967-02-07 Western States Machine Co Continuous centrifugal with adjustable liquids separator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL289947A (de) * 1962-10-02

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2343327A (en) * 1939-08-08 1944-03-07 R Y P Mfg Co Fruit and vegetable juice extractor
US2883054A (en) * 1955-02-04 1959-04-21 Federico G Sanchez Centrifugal separator
US3226257A (en) * 1961-10-09 1965-12-28 American Factors Ass Ltd Continuous centrifugal apparatus
US3276591A (en) * 1962-12-05 1966-10-04 Krauss Maffei Ag Apparatus for treating suspensions
US3302794A (en) * 1964-10-30 1967-02-07 Western States Machine Co Continuous centrifugal with adjustable liquids separator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718945A (en) * 1981-07-25 1988-01-12 Braunschweigische Maschinenbauanstalt Ag Sugar centrifuge
US20070261571A1 (en) * 2004-10-22 2007-11-15 Esteve Felipe Maria M Liquefier
US7644656B2 (en) * 2004-10-22 2010-01-12 Zumex Maquinas Y Elementos, S.A. Liquefier
US10513746B2 (en) 2016-10-18 2019-12-24 Western States Machine Company Continuous centrifuge systems with multiple-stage mixing

Also Published As

Publication number Publication date
DE1288988C2 (de) 1973-08-16
DE1288988B (de) 1969-02-06

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