EP1899074B1 - Schneckenzentrifuge - Google Patents

Schneckenzentrifuge Download PDF

Info

Publication number
EP1899074B1
EP1899074B1 EP06754987A EP06754987A EP1899074B1 EP 1899074 B1 EP1899074 B1 EP 1899074B1 EP 06754987 A EP06754987 A EP 06754987A EP 06754987 A EP06754987 A EP 06754987A EP 1899074 B1 EP1899074 B1 EP 1899074B1
Authority
EP
European Patent Office
Prior art keywords
hollow shaft
inflow tube
helical conveyor
tube
rotor drum
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.)
Not-in-force
Application number
EP06754987A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1899074A1 (de
Inventor
Günter Haider
Klaus Klinger
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.)
Hiller GmbH
Original Assignee
Hiller GmbH
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 Hiller GmbH filed Critical Hiller GmbH
Publication of EP1899074A1 publication Critical patent/EP1899074A1/de
Application granted granted Critical
Publication of EP1899074B1 publication Critical patent/EP1899074B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B04B11/06—Arrangement of distributors or collectors in centrifuges
    • 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
    • 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
    • B04B2001/2033—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 with feed accelerator inside the conveying screw

Definitions

  • the invention relates to a screw centrifuge for continuously separating flowable substances of different densities according to the preamble of patent claim 1.
  • a worm centrifuge according to the preamble of claim 1 is known, in which in the hollow shaft of the screw conveyor accelerating means is attached to a feed chamber. Within the feed chamber, pumping blades are provided which leave a central passageway through which the feed tube extends to near the opposite end of the feed chamber. The generated suction effect runs in countercurrent to Conveying direction in the feed pipe through the entire feed chamber through to be redirected in the pumping blades and subsequent acceleration blades again.
  • the invention has for its object to improve a worm centrifuge of the specified type so that the risk of backflow at the end of the inlet pipe can be effectively prevented, so that the risk of deposits is effectively prevented by refluxing mixture parts.
  • the inlet pipe passes through a protective tube which delimits the annular space from the cavity of the hollow shaft, the suction flow is considerably accelerated due to the relatively small cross section of the annular space, which counteracts an undesirable reflux even more efficiently.
  • the Luftabsaugorgan can be designed according to a structurally very simple and inexpensive solution as impeller part of a centrifugal pump.
  • This impeller part may be formed integrally with the hollow shaft and has suction channels, which emanate from the central inlet region and lead with opposite to the direction of rotation of the hollow shaft curved course to the spiral screw.
  • FIG. 1 It can be seen that in a partially indicated housing 10 in bearings 12, a rotor drum 14 is rotatably mounted, which is driven by a motor 16.
  • the rotor drum 14 is composed of a cylindrical portion 18 and a conical portion 20.
  • a screw conveyor 22 is rotatably mounted, which is driven by a motor 24 at a generally slightly higher speed than the rotor drum 14.
  • the worm gear 26 of the screw conveyor 24 is mounted on a hollow shaft 28 and arranged so that the conveying direction from the cylindrical portion 18 to the conical portion 20 takes place.
  • a feed pipe 30 is arranged for the mixture to be separated, which enters in the direction of arrow 32 in the inlet pipe 30.
  • the inlet pipe 30 extends through a coaxial protective tube 34, which is fixedly connected to the hollow shaft 28 and the cavity 36 of the hollow shaft 28 delimits from the annular space 38, which includes the inlet pipe 30.
  • the free end 40 of the feed tube 30 leads into a feed chamber 42 formed in the hollow shaft 28, from which radial feed openings 44 lead into the area of the screw helix 26.
  • the cylindrical portion 18 of the rotor drum 14 is closed by an end wall 46 which has weirs 48 for the discharge of the light phase 50, which flows into a discharge line 52 of the housing 10.
  • FIG. 1 enlarged representations of the FIGS. 2 and 3 show that in the conveying direction 32 of the feed pipe 30 before the application chamber 42, a Heilabsaugorgan 58 is provided which has a central inlet region 60 into which the feed chamber 42 leading end 40 of the inlet pipe 30 protrudes.
  • the Heilabsaugorgan 58 is, as in particular from FIG. 3 emerges as impeller part 62 of a centrifugal pump and integrally formed with the hollow shaft 28.
  • the impeller part 62 has suction channels 64, which emanate from the central inlet region 60 and with opposite to the direction of rotation r (see. FIG. 3 ) of the hollow shaft 28 lead curved course to the screw 26.
  • the suction channels 64 are, like the FIGS. 2 and 3 show incorporated into the hollow shaft 28.
  • suction flow generated according to the invention in the direction of the dashed arrows represent a support to realize high throughputs V, so that a large partial volume flow V1 is pressed by the centrifugal pump system under pressure in the area of the screw helix 26.

Landscapes

  • Centrifugal Separators (AREA)
EP06754987A 2005-06-04 2006-05-03 Schneckenzentrifuge Not-in-force EP1899074B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005025784A DE102005025784A1 (de) 2005-06-04 2005-06-04 Schneckenzentrifuge
PCT/EP2006/062026 WO2006131425A1 (de) 2005-06-04 2006-05-03 Schneckenzentrifuge

Publications (2)

Publication Number Publication Date
EP1899074A1 EP1899074A1 (de) 2008-03-19
EP1899074B1 true EP1899074B1 (de) 2010-12-01

Family

ID=36808365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06754987A Not-in-force EP1899074B1 (de) 2005-06-04 2006-05-03 Schneckenzentrifuge

Country Status (8)

Country Link
US (1) US7862493B2 (zh)
EP (1) EP1899074B1 (zh)
JP (1) JP2008542011A (zh)
KR (1) KR20080015505A (zh)
CN (1) CN101237939B (zh)
AT (1) ATE490026T1 (zh)
DE (2) DE102005025784A1 (zh)
WO (1) WO2006131425A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK200970026A (en) * 2009-06-12 2010-12-13 Alfa Laval Corp Ab A centrifugal separator
EP2557313A1 (de) * 2011-08-10 2013-02-13 Berlin Heart GmbH Rotationspumpe mit einem rotor und förderelementen
CN103447167A (zh) * 2013-08-12 2013-12-18 江苏捷达离心机制造有限公司 卧式螺旋卸料沉降离心机用布料加速器
CN103639075A (zh) * 2013-12-18 2014-03-19 常州普莱克红梅色母料有限公司 一种色母料生产用离心脱水装置
ES2785387T3 (es) * 2015-06-19 2020-10-06 Andritz Sas Centrifugadora decantadora
CN105753290B (zh) * 2016-04-07 2019-04-30 安徽普源分离机械制造有限公司 一种环保型自来水污泥高效离心设备
DE202017104036U1 (de) * 2017-07-06 2018-10-09 Gea Mechanical Equipment Gmbh Vollmantel-Schneckenzentrifuge
CN110142149B (zh) * 2019-05-29 2024-05-03 浙江工业大学 一种卧螺离心机用复合型排气结构

Family Cites Families (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2703676A (en) * 1947-01-15 1955-03-08 Sharples Corp Solids discharge mechanism for centrifuges
US2679974A (en) * 1947-01-15 1954-06-01 Sharples Corp Bearing construction for continuous centrifuge
US3096282A (en) * 1957-12-30 1963-07-02 Sharples Corp Improvement in centrifuges
US3228592A (en) * 1963-11-18 1966-01-11 Pennsalt Chemicals Corp Non-spilling feed means for vertical centrifuge
US3398888A (en) * 1966-08-18 1968-08-27 Ethyl Corp Centrifuge with improved discharge assembly
US3428246A (en) * 1967-12-21 1969-02-18 Pennsalt Chemicals Corp Centrifuge apparatus
DK118068B (da) * 1968-01-10 1970-06-29 Titan Separator As Centrifuge.
DE2057555C3 (de) * 1970-11-23 1975-06-05 Werner 8000 Muenchen Busch Schneckenzentrifuge
DE2152839A1 (de) * 1971-10-23 1973-04-26 Kloeckner Humboldt Deutz Ag Gleichstrom-vollmantelzentrifuge mit beschleunigungskoerper
DE3723864A1 (de) * 1987-07-18 1989-01-26 Westfalia Separator Ag Vollmantel-schneckenzentrifuge
JP2540198B2 (ja) * 1988-12-08 1996-10-02 アルファーラバル エービー デカンタ型遠心分離機を用いる汚泥の脱水方法および装置
US5374234A (en) * 1990-03-13 1994-12-20 Alfa-Laval Separation A/S Decanter centrifuge with energy dissipating inlet
AU3228693A (en) * 1991-11-27 1993-06-28 Baker Hughes Incorporated Feed accelerator system including feed slurry accelerating nozzle apparatus
US5401423A (en) * 1991-11-27 1995-03-28 Baker Hughes Incorporated Feed accelerator system including accelerator disc
US5380266A (en) * 1991-11-27 1995-01-10 Baker Hughes Incorporated Feed accelerator system including accelerator cone
US5403486A (en) * 1991-12-31 1995-04-04 Baker Hughes Incorporated Accelerator system in a centrifuge
AU3324793A (en) * 1991-12-31 1993-07-28 Baker Hughes Incorporated Feed accelerator system including accelerating vane apparatus
DE4217801A1 (de) 1992-05-29 1993-12-02 Kloeckner Humboldt Deutz Ag Radialwellendichtung
US5354255A (en) * 1992-12-17 1994-10-11 Alfa Laval Separation Inc. Decanter centrifuge with conveyor capable of high speed and higher flow rates
US5364335A (en) * 1993-12-07 1994-11-15 Dorr-Oliver Incorporated Disc-decanter centrifuge
GB9611209D0 (en) * 1996-05-29 1996-07-31 Ecc Int Ltd Decanter centrifuge
US5971907A (en) * 1998-05-19 1999-10-26 Bp Amoco Corporation Continuous centrifugal separator with tapered internal feed distributor
US6780147B2 (en) * 2000-08-31 2004-08-24 Varco I/P, Inc. Centrifuge with open conveyor having an accelerating impeller and flow enhancer
US7018326B2 (en) * 2000-08-31 2006-03-28 Varco I/P, Inc. Centrifuge with impellers and beach feed
US6790169B2 (en) * 2000-08-31 2004-09-14 Varco I/P, Inc. Centrifuge with feed tube adapter
US6605029B1 (en) * 2000-08-31 2003-08-12 Tuboscope I/P, Inc. Centrifuge with open conveyor and methods of use
US6561965B1 (en) 2000-10-20 2003-05-13 Alfa Laval Inc. Mist pump for a decanter centrifuge feed chamber
US7060019B2 (en) * 2000-11-14 2006-06-13 Westfalia Separator Ag Solid bowl screw centrifuge comprising a distributor
DK175539B1 (da) * 2002-03-14 2004-11-29 Alfa Laval Copenhagen As Dekantercentrifuge med slidforstærkning i indlöb
DE10212187A1 (de) * 2002-03-20 2003-10-02 Hiller Gmbh Schneckenzentrifuge
US7001324B2 (en) * 2003-01-08 2006-02-21 Hutchison Hayes, L. P. Method of retrofitting a decanting centrifuge
JP3974067B2 (ja) * 2003-03-27 2007-09-12 月島機械株式会社 デカンタ型遠心脱水装置
JP2004290833A (ja) * 2003-03-27 2004-10-21 Tsukishima Kikai Co Ltd デカンタ型遠心脱水装置
US20050245381A1 (en) * 2004-04-30 2005-11-03 National-Oilwell, L.P. Centrifuge accelerator system
CA2505236C (en) * 2005-04-25 2007-11-20 Edward Carl Lantz Centrifuge with shaping of feed chamber to reduce wear

Also Published As

Publication number Publication date
ATE490026T1 (de) 2010-12-15
CN101237939B (zh) 2011-07-06
KR20080015505A (ko) 2008-02-19
DE502006008446D1 (de) 2011-01-13
EP1899074A1 (de) 2008-03-19
JP2008542011A (ja) 2008-11-27
US20090215604A1 (en) 2009-08-27
DE102005025784A1 (de) 2006-12-07
CN101237939A (zh) 2008-08-06
WO2006131425A1 (de) 2006-12-14
US7862493B2 (en) 2011-01-04

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