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EP1225981B1 - Vollmantel-schneckenzentrifuge zur verarbeitung eines zur schäumung neigenden schleudergutes - Google Patents

Vollmantel-schneckenzentrifuge zur verarbeitung eines zur schäumung neigenden schleudergutes Download PDF

Info

Publication number
EP1225981B1
EP1225981B1 EP00974410A EP00974410A EP1225981B1 EP 1225981 B1 EP1225981 B1 EP 1225981B1 EP 00974410 A EP00974410 A EP 00974410A EP 00974410 A EP00974410 A EP 00974410A EP 1225981 B1 EP1225981 B1 EP 1225981B1
Authority
EP
European Patent Office
Prior art keywords
screw
distributor
type solid
solid bowl
bowl centrifuge
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
EP00974410A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1225981A1 (de
Inventor
Helmut Figgener
Paul BRÜNING
Josef Von Heyden-Linden
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.)
GEA Mechanical Equipment GmbH
Original Assignee
Westfalia Separator 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 Westfalia Separator GmbH filed Critical Westfalia Separator GmbH
Publication of EP1225981A1 publication Critical patent/EP1225981A1/de
Application granted granted Critical
Publication of EP1225981B1 publication Critical patent/EP1225981B1/de
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
    • 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
    • B04B2001/2041—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 baffles, plates, vanes or discs attached to the conveying screw

Definitions

  • the invention relates to a solid bowl screw centrifuge for processing a centrifuged material that tends to foam.
  • DE-A-36 38 782, US-A-35 68 919 and US-A-43 34 647 are solid bowl screw centrifuges known, which have the features a) to c) of the claim 1 show.
  • US-A-53 06 225 also shows liquid overflow openings in the baffle plates a solid bowl screw centrifuge.
  • a known decanter is also shown in FIG. 2.
  • processing centrifugal material which in addition to one solid phase and one liquid phase in the decanter tends to be third Phase of forming a foam - e.g. a fruit spread for the production of fruit juice or a high-protein centrifuge - there is the problem that the Foam undesirably escapes from the decanter through the liquid outlet and thus the quality of the liquid phase is impaired.
  • the hydrohermetic inlet prevents oxidation.
  • the arrangement of the invention meets the highest hygiene requirements with regard to the centrifugal material feed as well as with regard to the foam barrier in the direction of the liquid discharge.
  • baffle plate Since at least one baffle plate protrudes into the liquid level, it forms one Barrier for foam generated during the centrifugal process the corresponding discharge.
  • the one between the distributor and the solids discharge is preferably arranged Dimension baffle plate such that between the drum shell and the baffle plate relatively narrow gap remains, which is designed such that through it a slimy Solid phase can pass, the reflux through the gap through the pressing slimy solid phase is prevented.
  • the feed pipe is preferably via the distributor firmly connected to the screw, so that the inlet pipe when the Snail turns with this.
  • the distributor firmly connected to the screw, so that the inlet pipe when the Snail turns with this.
  • the inlet pipe is rotatable is designed, it is also possible to distribute and feed pipe directly "one-piece” to connect with each other directly without gaps and openings, so that no foam more in any gaps or spaces between the inlet pipe and the distributor can penetrate, which was the case with the prior art.
  • the hygiene effect is increased by the further measure, the distributor directly to be fixed in the circumferential openings of the screw body without gaps or openings. This creates a gap-free and opening-free path from the inlet pipe to the The decanter's centrifuge. It cannot Centrifugal material more in the area between the outer circumference of the inlet pipe and reach the inner circumference of the screw body, since this inlet section of the centrifuge "hydrohermetic" is designed closed.
  • the distributor is essentially tubular trained so that he at least one - preferably two - radial, in the Has centrifugal outlet openings. If the distributor also has one such a radial extension that he is in the operation of the centrifuge into the liquid or protrudes below the liquid level in the centrifugal chamber, so that its outlet openings are below the liquid level, the effect of the hermetic Completion of the inlet section of the centrifuge further improved. This measure too also contributes to a particularly gentle treatment of the product / centrifuge he follows.
  • At least one of the baffle plates is attached directly the distributor and / or the outer circumference of the screw body in the region of the distributor formed.
  • FIG. 1 shows a solid bowl screw centrifuge 2, which has a centrifugal drum 3 with an outer drum shell 4, which has a cylindrical section 6 and a conically tapering adjoining the cylindrical section 6 Section 8 includes.
  • a rotatable screw 12 is arranged for the discharge of solids.
  • the screw 12 has an inner, essentially cylindrical screw body 14, whose geometry is essentially the same as the geometry of the outer centrifuge drum shell 4 is adapted and again according to the contour of the drum shell 4 a cylindrical section 14a and one on the cylindrical Section subsequent conical section 14b includes.
  • This preferred here Geometry is to be understood purely as an example. Alternative geometries of the snail body 14 - e.g. purely cylindrical - are conceivable within the scope of the invention.
  • the screw body 14 of a distributor (pipe) 16 preferably rectangular in cross section, which passes through open at its two axial ends in the centrifugal space 18 between the Snail body 14 and the drum shell 4 opens and on the snail body is welded, so that a direct - quasi one-piece - gap and opening-free connection between the feed pipe 20 and the screw body 14 is realized.
  • the inlet pipe 20 is formed in the region of the central axis of the screw centrifuge.
  • the inlet pipe 20 is at one end facing away from the distributor 16 Ring 22 attached to the inner periphery of the screw body 14, which in turn with Rolling bearings 24 is rotatably mounted on a shoulder of the axial cover 26, which the drum casing 4 essentially closes axially.
  • On its cover 24 End facing away from the inlet pipe 20 passes through an opening in the manifold 16.
  • the rotatable inlet pipe 20 is thus arranged (e.g. welded) on the distributor 16, that a gap-free connection is realized between these elements and no centrifuge or foam gets into any gaps in this area can.
  • the inlet pipe 20 projects here from the right or from the cylindrical section the centrifuge into this.
  • a reverse arrangement of the inlet pipe 20 of the left or conical side of the drum 4 is conceivable.
  • a baffle plate arrangement is formed on the outer circumference of the screw body 14, which consists of two baffle plates 28, 30, one of which (the baffle plate 28) in the direction of the liquid discharge here in the cylindrical section 14a of the screw body 14 and the other (the baffle plate 30) to the side of the solids discharge placed here in the conical section 14b of the screw body is.
  • Both baffle plates 14 have such a radial extent that they in Operation of the screw centrifuge protrude into the liquid level F.
  • the baffle plate 28 attached to the cylindrical portion of the screw body 14 is as Washer formed without openings, while that on the conical section of the Snail body 14 attached baffle plate 30 openings to the inner circumference 32 - for example slit-like or with a different contour.
  • the radial extension this baffle plate 30 is larger than that of the baffle plate 28 in the cylindrical Area of the screw body 14. It is dimensioned such that between the drum shell 4 and the baffle plate 30 only a relatively narrow gap 31 remains.
  • a centrifugal product that tends to foam passes through the rotating inlet pipe 20 into the distributor 16 and through this into the centrifugal space 18. Since that Inlet pipe 20 is designed rotatable and at its end facing the distributor 16 is welded in an opening of the distributor 16 and since the distributor 16 is also on Screw body 14 is welded, no foam in any openings or slits penetrate and contaminate the decanter. It becomes a hermetic one Inlet section from the inlet pipe 20 through the distributor 16 into the centrifugal space 18 formed.
  • the exit of Foam through the liquid discharge 34 prevents the quality of the liquid phase further improved.
  • the foam can, however, toward the solid discharge 36 through the slot-like openings 32 in the baffle plate 30 out of the decanter escape.
  • the baffle plate 30 essentially serves to reflux one from the narrow gap 31 pushing slimy solid phase back through the gap 31 in to prevent the cylindrical portion 8 of the drum 4.
  • the openings 32 in this Baffle plate 30 allow the foam to exit in the direction of solids discharge, the in a closed design of this baffle plate 30 without the Openings 32 could not escape from the drum 4.
  • the liquid level is at the liquid discharge 34, at which the liquid is derived through a peeling tube 38, through the location of the inner circumference of another Baffle plate 40 determined. In the present case, the liquid level is almost sufficient up to the snail body 14.
  • Impairment of the quality of the liquid phase (e.g. apple juice) due to oxidation and / or foam is in this way without major design effort avoided when ensuring a particularly high standard of hygiene.

Landscapes

  • Centrifugal Separators (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP00974410A 1999-11-02 2000-10-18 Vollmantel-schneckenzentrifuge zur verarbeitung eines zur schäumung neigenden schleudergutes Expired - Lifetime EP1225981B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19952804 1999-11-02
DE19952804A DE19952804C2 (de) 1999-11-02 1999-11-02 Vollmantel-Schneckenzentrifuge zur Verarbeitung eines zur Schäumung neigenden Schleudergutes
PCT/EP2000/010242 WO2001032314A1 (de) 1999-11-02 2000-10-18 Vollmantel-schneckenzentrifuge zur verarbeitung eines zur schäumung neigenden schleudergutes

Publications (2)

Publication Number Publication Date
EP1225981A1 EP1225981A1 (de) 2002-07-31
EP1225981B1 true EP1225981B1 (de) 2004-01-14

Family

ID=7927718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00974410A Expired - Lifetime EP1225981B1 (de) 1999-11-02 2000-10-18 Vollmantel-schneckenzentrifuge zur verarbeitung eines zur schäumung neigenden schleudergutes

Country Status (12)

Country Link
US (1) US6749552B1 (zh)
EP (1) EP1225981B1 (zh)
JP (1) JP3990912B2 (zh)
CN (1) CN1157261C (zh)
AT (1) ATE257745T1 (zh)
BR (1) BR0015259B1 (zh)
CA (1) CA2389287C (zh)
DE (2) DE19952804C2 (zh)
DK (1) DK1225981T3 (zh)
ES (1) ES2210010T3 (zh)
PL (1) PL195570B1 (zh)
WO (1) WO2001032314A1 (zh)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19952804C2 (de) * 1999-11-02 2003-07-03 Westfalia Separator Ind Gmbh Vollmantel-Schneckenzentrifuge zur Verarbeitung eines zur Schäumung neigenden Schleudergutes
JP4113775B2 (ja) * 2000-11-14 2008-07-09 ウエストファリア セパレーター アーゲー 分配装置を備える固体ボウルスクリュー遠心機
DE10220757B4 (de) * 2002-05-08 2004-06-24 Westfalia Separator Ag Zentrifuge, insbesondere Separator
DE10223802B4 (de) * 2002-05-29 2005-06-09 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge
SE525413C2 (sv) * 2003-06-18 2005-02-15 Alfa Laval Corp Ab En skruvtransportör för en dekantercentrifug
DE10336350B4 (de) * 2003-08-08 2007-10-31 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge, mit Schälscheibe
DE102006006178A1 (de) * 2006-02-10 2007-08-16 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge und Verfahren zu deren Betrieb
US8038870B2 (en) * 2008-09-09 2011-10-18 The Western States Machine Company Centrifuges with rotating feed pipes
DK200970026A (en) 2009-06-12 2010-12-13 Alfa Laval Corp Ab A centrifugal separator
AU2011268438B2 (en) * 2010-06-15 2015-09-10 Robert Havrin Centrifugal liquid separation machine using pressurized air to promote solids transport
DK177710B1 (en) 2012-09-14 2014-03-31 Alfa Laval Corp Ab Auger conveyor for a centrifugal separator, in particular a decanter centrifuge, and a centrifugal separator
CN103567084B (zh) * 2013-10-21 2016-03-09 绿水分离设备有限公司 一种应用消泡板技术的卧式螺旋卸料沉降离心机
EP2918345B1 (en) * 2014-03-14 2020-02-05 Andritz S.A.S. Decanter centrifuge
US10899647B1 (en) 2017-10-06 2021-01-26 Southeastern Environmental Services, LLC Decanter centrifuge system for producing low moisture solids from poultry plant sludge
US11318480B2 (en) * 2019-03-04 2022-05-03 Kennametal Inc. Centrifuge feed pipes and associated apparatus
DE102019110996A1 (de) * 2019-04-29 2020-10-29 Gea Mechanical Equipment Gmbh Vollmantel-Schneckenzentrifuge
CN110773330B (zh) * 2019-11-26 2024-10-01 巨能机械(中国)有限公司 一种压榨挡板结构的卧式螺旋卸料沉降离心机
DE202022101838U1 (de) 2022-04-06 2023-07-10 Gea Westfalia Separator Group Gmbh Vollmantel-Schneckenzentrifuge

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IS679B6 (is) * 1965-10-21 1969-04-22 Alfa-Laval Ab Tilhögun við að aðskilja aurleðju í skilvindu.
US3568919A (en) * 1968-01-10 1971-03-09 Titan Separator As Screw centrifuge
US3795361A (en) * 1972-09-06 1974-03-05 Pennwalt Corp Centrifuge apparatus
US4245777A (en) * 1979-08-30 1981-01-20 Pennwalt Corporation Centrifuge apparatus
US4334647A (en) * 1980-12-03 1982-06-15 Bird Machine Company, Inc. Centrifuges
DE3638782A1 (de) * 1986-11-13 1988-05-26 Krupp Gmbh Verfahren zur abtrennung von feststoffen aus suspensionen und zentrifugaldekanter zur durchfuehrung des verfahrens
JP3032283B2 (ja) * 1990-11-27 2000-04-10 月島機械株式会社 デカンタ型遠心分離機
US5156751A (en) * 1991-03-29 1992-10-20 Miller Neal J Three stage centrifuge and method for separating water and solids from petroleum products
DE4112957A1 (de) * 1991-04-20 1992-10-22 Kloeckner Humboldt Deutz Ag Vollmantel-schneckenzentrifuge
DE4321964A1 (de) * 1993-07-01 1995-01-12 Kloeckner Humboldt Deutz Ag Verfahren zum Betrieb von Schneckenzentrifugen
DE69704963T2 (de) * 1996-01-18 2002-01-24 Rapanelli Fioravante S.P.A., Foligno Horizontale Zentrifuge für eine optimale Ölextraktion
JPH10151369A (ja) * 1996-11-22 1998-06-09 Sumitomo Chem Co Ltd 多層混合物の遠心分離方法及びスクリューデカンター型遠心分離装置
DE19952804C2 (de) * 1999-11-02 2003-07-03 Westfalia Separator Ind Gmbh Vollmantel-Schneckenzentrifuge zur Verarbeitung eines zur Schäumung neigenden Schleudergutes
US6572524B1 (en) * 2000-07-14 2003-06-03 Alfa Laval Inc. Decanter centrifuge having a heavy phase solids baffle

Also Published As

Publication number Publication date
DE50005039D1 (de) 2004-02-19
BR0015259A (pt) 2002-06-18
PL354476A1 (en) 2004-01-26
DK1225981T3 (da) 2004-03-29
CN1377303A (zh) 2002-10-30
PL195570B1 (pl) 2007-10-31
WO2001032314A1 (de) 2001-05-10
ATE257745T1 (de) 2004-01-15
CA2389287C (en) 2006-01-17
JP3990912B2 (ja) 2007-10-17
EP1225981A1 (de) 2002-07-31
JP2003512928A (ja) 2003-04-08
DE19952804A1 (de) 2001-05-10
CA2389287A1 (en) 2001-05-10
BR0015259B1 (pt) 2010-11-30
US6749552B1 (en) 2004-06-15
CN1157261C (zh) 2004-07-14
DE19952804C2 (de) 2003-07-03
ES2210010T3 (es) 2004-07-01

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