EP2794113B1 - Vollmantel-schneckenzentrifuge - Google Patents

Vollmantel-schneckenzentrifuge Download PDF

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Publication number
EP2794113B1
EP2794113B1 EP12805438.4A EP12805438A EP2794113B1 EP 2794113 B1 EP2794113 B1 EP 2794113B1 EP 12805438 A EP12805438 A EP 12805438A EP 2794113 B1 EP2794113 B1 EP 2794113B1
Authority
EP
European Patent Office
Prior art keywords
solids
hose segment
screw centrifuge
solid bowl
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.)
Active
Application number
EP12805438.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2794113A2 (de
Inventor
Stefan Terholsen
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
GEA Mechanical Equipment 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 GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Publication of EP2794113A2 publication Critical patent/EP2794113A2/de
Application granted granted Critical
Publication of EP2794113B1 publication Critical patent/EP2794113B1/de
Active 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
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
    • 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
    • B04B11/00—Feeding, charging, or discharging bowls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B04B7/04—Casings facilitating discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • 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
    • B04B2001/2091—Configuration of solids outlets

Definitions

  • the invention relates to a solid bowl screw centrifuge according to the preamble of claim 1.
  • Solid bowl centrifuges are known in various designs, such as from DE 43 20 265 A1 and the WO 2004/058409 A1 , The DE 42 38 568 A1 illustrated in Fig. 1 in that, and how, during operation of a solid bowl centrifuge, contaminants can accumulate in a solids collecting chamber. This requires repeated cleaning of the solids collecting chamber, in order to avoid damage to the operation due to blockages or even damage to the rotating system. From the US 3,105,045 It is known to provide a coat of Teflon around a solid bowl screw centrifuge and thereby also to their solids discharge, to slip from the centrifuged solids. The design effort for the realization of such a jacket is very high.
  • the invention solves this problem by the subject matter of claim 1. According to the invention are advantageously despite a waiver of a sealed elastomeric chamber in which by compressed air, a pressure gradient can be generated solely by the impact of the solid enough movements in the elastomeric element in the solids collection chamber to remove dirt.
  • the number of purifications of the solids collecting chamber can thus be reduced compared to solids collecting chambers without an elastomeric element.
  • the maintenance of solutions with a pressure chamber in which a pressure gradient can be generated simplified, since the elastomer does not have to be arranged pressure-tight.
  • the means required to generate the pressure gradient for example a controllable pump) are also saved.
  • Another advantage lies in the achieved noise reduction, since the impact impulse of the solid vibration is well decoupled from the frame or the noise-radiating surface of the centrifuge and because a two-layered sound is realized by the tube segment, which acts soundproofing. This is particularly advantageous for harder and coarse solids and at a high solids discharge per time (or a high solids output).
  • Fig. 1 shows a solid bowl screw centrifuge with a non-rotatable housing 1 (or a hood-like cover), in which a rotatable drum 3 is arranged, which has a horizontal axis of rotation D.
  • a further - preferably with a differential speed to the drum 3 - rotatable screw 5 is arranged.
  • the drum 3 and the screw 5 each have a substantially cylindrical portion 3a, 5a and a subsequent thereto tapered portion 3b, 5b.
  • the worm blade 7 surrounds both the cylindrical and the tapered region of the worm body 9.
  • the drum 3 also has a further cylindrical section 3c adjoining the conically tapering section 3b, which defines a co-rotating solids discharge chamber 11.
  • An axially extending centric inlet pipe 13 serves to supply the centrifuged material via a distributor 9 into the centrifugal space 15 between the screw 5 and the drum 3.
  • the supported screw 5 (bearing 17a) rotates at a speed slightly smaller or greater than the rotatably mounted drum 3 (bearing 17b) and conveys the ejected solid toward the conical portion 3b and beyond to the cylindrical adjacent to the screw in the axial direction
  • Solids discharge chamber 11 in the second cylindrical portion 3 c of the drum 3, which in turn with at least one radially outwardly of the Drum 3 leading discharge opening 19 is provided for solid.
  • This outlet opening may also be aligned at an angle to the radial, for example, to achieve an energy-saving recoil effect in the circumferential direction (not shown here).
  • the liquid in contrast, flows to the larger drum diameter at the rear end of the cylindrical section of the drum 3 and is there at overflow openings 21 - here with an adjustable weir 23 - derived.
  • the solid S emerging from the solids discharge opening 19 of the rotating drum 3 collects in a solids collecting chamber 25 which surrounds the solids discharge chamber in an annular manner and whose cross-section - in this case rectangular in shape Fig. 1 and 3 is recognizable.
  • This cross-section is preferred, but is not necessarily provided.
  • a discharge pipe can emerge from the solids collecting chamber or a collecting container can be provided in order to further divert or trap the leaked, muddy solid.
  • Fig. 3 illustrates that in the operation of the solid bowl screw centrifuge caking 27 can form in the solids collecting chamber 25 so that it must be cleaned again and again.
  • hose segment 29 is arranged almost annular in the solids collecting chamber, so that it almost completely surrounds the drum in the area of the solids discharge opening 19, except for an outlet opening into a drain or a collecting container, not shown here.
  • the cross-section is not flat in section perpendicular to the chamber but preferably C-shaped, U-shaped or ⁇ -shaped, wherein the open side of the C, the U or the ⁇ facing the Feststoffaustragsö réelle 19.
  • the non-circumferentially closed region 35 of the tube segment 29 is thus facing the discharge opening 19.
  • the two open edges of the hose segment can be attached to small webs 31, 33. The edges are aligned parallel to each other here.
  • hose segment 29 in a preferably spaced from the attachment areas (here on the webs 30, 31) in the solids collecting chamber 25, here in a region on the side remote from the discharge opening 19 outside of the hose segment on an inner side 38 of a wall 39th the (here in section U-shaped, formed from right angles to each other aligned walls solids discharge chamber 25) lie directly.
  • strong movements arrows M
  • Fig. 4 can recognize the hose segment 29 but also completely (apart from the direct or indirect connection with the walls of the Solids discharge chamber via the webs 30, 31) spaced (gap G) to the inside 38 of the walls of the solids discharge chamber 25 may be arranged. This is particularly advantageous to the noise, here again compared Fig. 2 is reduced.
  • each point of the tube segment can move freely to prevent such caking of the solid and / or loosen existing caking again.
  • the tube segment is preferably completely ( Fig. 2 . Fig. 4 ) made of an elastomer (eg a rubber material) or it is formed as a composite part, which consists partly of an elastomer (see Fig. 5 ) and partially made of a non-elastomeric material such as a metal, for example steel or the like.
  • an elastomer eg a rubber material
  • a composite part which consists partly of an elastomer (see Fig. 5 ) and partially made of a non-elastomeric material such as a metal, for example steel or the like.
  • the base leg 40 of the tubular segment is made of metal (or a coated metal or the like), and the side legs 41, 42 of the U-shaped tube segment are made of the movable elastomer.
  • the legs 41, 42 are thus movable and the base leg 40 immovable in itself.
  • This variant is particularly stable and durable, because the rigid section or leg forms a wear protection. Nevertheless, the number of necessary cleaning operations is significantly reduced, because on the legs 41, 42 and the base leg 40 moves when hitting solid with. On the metal leg, the material can also slipping particularly good sliding.

Landscapes

  • Centrifugal Separators (AREA)
EP12805438.4A 2011-12-22 2012-12-10 Vollmantel-schneckenzentrifuge Active EP2794113B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202011052424U DE202011052424U1 (de) 2011-12-22 2011-12-22 Vollmantel-Schneckenzentrifuge
PCT/EP2012/074878 WO2013092262A2 (de) 2011-12-22 2012-12-10 Vollmantel-schneckenzentrifuge

Publications (2)

Publication Number Publication Date
EP2794113A2 EP2794113A2 (de) 2014-10-29
EP2794113B1 true EP2794113B1 (de) 2018-03-21

Family

ID=47424899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12805438.4A Active EP2794113B1 (de) 2011-12-22 2012-12-10 Vollmantel-schneckenzentrifuge

Country Status (14)

Country Link
US (1) US9089852B2 (pt)
EP (1) EP2794113B1 (pt)
JP (1) JP2015506263A (pt)
KR (1) KR20140117406A (pt)
CN (1) CN104093494B (pt)
AU (1) AU2012358413B2 (pt)
BR (1) BR112014014801B1 (pt)
CA (1) CA2857101C (pt)
DE (1) DE202011052424U1 (pt)
MX (1) MX2014007046A (pt)
RU (1) RU2616060C2 (pt)
SG (1) SG11201403498PA (pt)
UA (1) UA114718C2 (pt)
WO (1) WO2013092262A2 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011052424U1 (de) * 2011-12-22 2013-03-25 Gea Mechanical Equipment Gmbh Vollmantel-Schneckenzentrifuge
ES2787014T3 (es) * 2017-05-04 2020-10-14 Andritz Sas Centrifugadora decantadora
CN107336885B (zh) * 2017-07-03 2020-04-24 香格里拉市康美乳业开发有限责任公司 一种干酪素螺旋沉降式加工生产线

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105045A (en) * 1962-01-04 1963-09-24 Sharples Corp Centrifuge discharge means
US3399828A (en) 1966-11-25 1968-09-03 Bird Machine Co Centrifuge solids discharge receiving compartment
JPS5735850U (pt) * 1980-08-08 1982-02-25
US4397637A (en) * 1981-07-13 1983-08-09 The Garrett Corporation Apparatus and method for centrifuging
SU1025454A1 (ru) * 1982-03-17 1983-06-30 Предприятие П/Я В-2262 Осадительна центрифуга
DE3318793A1 (de) * 1983-05-24 1985-01-24 KHD Humboldt Wedag AG, 5000 Köln Vorrichtung zum entfeuchten von schlamm
CN1033162A (zh) * 1988-12-06 1989-05-31 苏州市化工设备三厂 螺旋卸料沉降离心机
JPH0354749U (pt) * 1989-09-25 1991-05-27
JPH0636883B2 (ja) * 1990-06-21 1994-05-18 三菱化工機株式会社 スクリュー型遠心分離機
US5151079A (en) * 1990-09-27 1992-09-29 Conoco Specialty Products Inc. Method and apparatus for reduction of particle disintegration
US5156751A (en) * 1991-03-29 1992-10-20 Miller Neal J Three stage centrifuge and method for separating water and solids from petroleum products
JPH0647085B2 (ja) * 1991-09-24 1994-06-22 三菱化工機株式会社 スクリュー型遠心分離機
JP2528061B2 (ja) * 1992-08-28 1996-08-28 三菱化工機株式会社 ロ―タリ排出型遠心分離機
DE4238568A1 (de) 1992-11-16 1994-05-19 Siteg Siebtech Gmbh Zentrifuge für die Feststoff-Flüssigkeits-Trennung
DE4320265C2 (de) 1993-06-18 1995-08-03 Westfalia Separator Ag Wehr für Vollmantelschleudertrommeln
NZ281497A (en) * 1994-02-23 1998-01-26 Swift Echrich Inc Defatting of meat using decanter centrifuge: metered amounts of fluid added to meat before it enters centrifuge
US5800332A (en) * 1996-07-03 1998-09-01 Hensley; Gary L. Decanting centrifuge employing elements with differing rates of rotation
DE10261520A1 (de) 2002-12-23 2004-07-08 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge mit einstellbarem Feststoffaustrag
US7540838B2 (en) * 2005-10-18 2009-06-02 Varco I/P, Inc. Centrifuge control in response to viscosity and density parameters of drilling fluid
US7908764B1 (en) * 2008-05-05 2011-03-22 Decanter Machines, Inc. Hyperbaric centrifuge system
WO2011044227A2 (en) * 2009-10-06 2011-04-14 M-I L.L.C. Apparatuses and methods of manufacturing oilfield machines
DE202011052424U1 (de) * 2011-12-22 2013-03-25 Gea Mechanical Equipment Gmbh Vollmantel-Schneckenzentrifuge
US8956272B2 (en) * 2011-12-30 2015-02-17 Vanderbeken Ent. Ltd Method and apparatus for removal of tars or resins from a scrubber liquid using a centrifuge with a discharge chamber scraper
US20130168317A1 (en) * 2011-12-30 2013-07-04 Vanderbeken Enterprises Ltd. Dba Drycake Method and apparatus for removal of tars, resins, chars or volatiles from a liquid
CZ2012869A3 (cs) * 2012-12-04 2014-02-05 Josef Kutil Zařízení pro mechanickou lyzaci biologického kalu zahuštěného v odstředivce

Also Published As

Publication number Publication date
UA114718C2 (uk) 2017-07-25
RU2014129259A (ru) 2016-02-10
WO2013092262A3 (de) 2014-06-05
US9089852B2 (en) 2015-07-28
DE202011052424U1 (de) 2013-03-25
AU2012358413A1 (en) 2014-07-24
SG11201403498PA (en) 2014-10-30
AU2012358413A2 (en) 2014-08-07
RU2616060C2 (ru) 2017-04-12
US20140364297A1 (en) 2014-12-11
WO2013092262A2 (de) 2013-06-27
JP2015506263A (ja) 2015-03-02
MX2014007046A (es) 2014-09-16
EP2794113A2 (de) 2014-10-29
CA2857101A1 (en) 2013-06-27
BR112014014801B1 (pt) 2020-07-28
BR112014014801A2 (pt) 2017-06-13
CN104093494B (zh) 2016-02-24
CN104093494A (zh) 2014-10-08
KR20140117406A (ko) 2014-10-07
CA2857101C (en) 2019-04-16
AU2012358413B2 (en) 2017-07-27

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