GB1346387A - Centrifuge construction - Google Patents

Centrifuge construction

Info

Publication number
GB1346387A
GB1346387A GB4342772A GB4342772A GB1346387A GB 1346387 A GB1346387 A GB 1346387A GB 4342772 A GB4342772 A GB 4342772A GB 4342772 A GB4342772 A GB 4342772A GB 1346387 A GB1346387 A GB 1346387A
Authority
GB
United Kingdom
Prior art keywords
seals
bowl
lubricant
passageway
reservoir
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
Application number
GB4342772A
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.)
Pennwalt Corp
Original Assignee
Pennwalt Corp
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 Pennwalt Corp filed Critical Pennwalt Corp
Publication of GB1346387A publication Critical patent/GB1346387A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings

Landscapes

  • Centrifugal Separators (AREA)

Abstract

1346387 Centrifugal separator PENNWALT CORP 19 Sept 1972 [23 Sept 1971] 43427/72 Heading B2P [Also in Division F2] A centrifuge, of the type having an internal helical screw conveyor 18 within the centrifuge bowl 14 which is mounted in an internally gas-pressurised casing 12, is provided with a lubricating and sealing arrangement for lubricating a bearing 72 located between the bowl and the conveyor. This arrangement includes a rotatable lubricant reservoir 64 located within the hub 20 of the conveyor and having a flexible wall 56 exposed at its external surface 57 to the internal gas pressure transmitted from the separation chamber 28 within the bowl via a passageway 84a to pressurise lubricant contained in the reservoir. The reservoir is bounded by perforated walls 52, 58. The lubricant is supplied in operation by the action of centrifugal force from the reservoir via an annular chamber 66 and a passageway 68 to an annular bearing cavity 70 extending between annular seals 74a, 74b and 74c, 74d disposed between the bowl and the conveyor on each side of the bearing 72. The gaseous pressure is transmitted via the flexible wall 56 and the lubricant to bearing cavity 70 and acts upon the interior surfaces 80b, 80c of seals 74b, 74c. The gaseous pressure also acts upon the exterior surface 76a of seal 74a via a passageway 77, and upon exterior surface 76d of seal 74d via passageways 79, 81. The gaseous pressure is also transmitted to annular spaces 98a, 98b between the seals 74a, 74b and 74c, 74d respectively via passageways 88a, 88b. Thus the pressure is substantially equalized on opposite sides of the bearing seals resulting in better sealing. The seals 74a arid 74d are primarily used to keep solids discharging through opening 32 in the bowl away from the seals 74b and 74c respectively. During operation, lubricant gradually leaks past seals 74b, 74c into the annular spaces 98a, 98b, and is discharged by the action of centrifugal force through passageways 88a, 88b into a stationary collecting chamber 84. A passageway 94 extends from space 106 below the chamber 84 to the tangential discharge opening 44 for separated liquid.
GB4342772A 1971-09-23 1972-09-19 Centrifuge construction Expired GB1346387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18299971A 1971-09-23 1971-09-23

Publications (1)

Publication Number Publication Date
GB1346387A true GB1346387A (en) 1974-02-06

Family

ID=22670984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4342772A Expired GB1346387A (en) 1971-09-23 1972-09-19 Centrifuge construction

Country Status (5)

Country Link
US (1) US3729128A (en)
AU (1) AU459595B2 (en)
CA (1) CA953266A (en)
FR (1) FR2153428A1 (en)
GB (1) GB1346387A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140102A (en) * 1983-05-06 1984-11-21 Boc Group Plc Improvements in shaft seals
US4708711A (en) * 1985-11-08 1987-11-24 Krauss-Maffei A.G. Pressure centrifuge

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205779A (en) * 1979-03-14 1980-06-03 Beckman Instruments, Inc. Pressure bypass ports for an ultracentrifuge drive system in a vacuum environment
DE3343938A1 (en) * 1983-12-05 1985-06-13 Krauss-Maffei AG, 8000 München BEARING SEAL FOR A CENTRIFUGE
DE4130759A1 (en) * 1991-09-16 1993-03-18 Flottweg Gmbh CENTRIFUGE FOR CONTINUOUS SEPARATION OF SUBSTANCES OF DIFFERENT DENSITY
DE4217801A1 (en) * 1992-05-29 1993-12-02 Kloeckner Humboldt Deutz Ag Radial shaft seal for screw centrifuge for solid-liq. mixt. sepn. - comprises helical sealing element of PTFE pressed in operating position by centrifugal force, for sealing rotating hollow shafts annular gap
US7337764B2 (en) * 2003-05-30 2008-03-04 Borgwarner Inc. Pressure balanced bearing
US7908764B1 (en) * 2008-05-05 2011-03-22 Decanter Machines, Inc. Hyperbaric centrifuge system
CN103447165B (en) * 2013-08-22 2015-07-22 江苏赛德力制药机械制造有限公司 Main shaft sealing device of centrfugal machine
DE102013114510A1 (en) * 2013-12-19 2015-06-25 Gea Mechanical Equipment Gmbh Bearing arrangement for centrifuges
DE102016101574B4 (en) * 2016-01-29 2020-02-20 Flottweg Se Bearing arrangement of a screw of a solid bowl centrifuge
DE102021113425A1 (en) * 2021-05-25 2022-12-01 Gea Westfalia Separator Group Gmbh Solid bowl centrifuge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670898A (en) * 1950-05-22 1954-03-02 Specialized Instr Corp Centrifuge apparatus
US3194492A (en) * 1962-06-28 1965-07-13 Richard A Koffinke Pressurized centrifuge
GB1050046A (en) * 1964-05-04
US3315882A (en) * 1964-10-05 1967-04-25 Pennsalt Chemicals Corp Centrifuge having rotary solids discharge conveyor with bearing seal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140102A (en) * 1983-05-06 1984-11-21 Boc Group Plc Improvements in shaft seals
US4708711A (en) * 1985-11-08 1987-11-24 Krauss-Maffei A.G. Pressure centrifuge

Also Published As

Publication number Publication date
US3729128A (en) 1973-04-24
AU4547672A (en) 1974-02-14
AU459595B2 (en) 1975-03-27
FR2153428A1 (en) 1973-05-04
CA953266A (en) 1974-08-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees