EP2598251B1 - Centrifugeuse à vis sans fin et à bol plein avec déversoir de débordement - Google Patents

Centrifugeuse à vis sans fin et à bol plein avec déversoir de débordement Download PDF

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Publication number
EP2598251B1
EP2598251B1 EP11735650.1A EP11735650A EP2598251B1 EP 2598251 B1 EP2598251 B1 EP 2598251B1 EP 11735650 A EP11735650 A EP 11735650A EP 2598251 B1 EP2598251 B1 EP 2598251B1
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EP
European Patent Office
Prior art keywords
wall
solid
screw centrifuge
weir
centrifuge according
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
EP11735650.1A
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German (de)
English (en)
Other versions
EP2598251A2 (fr
Inventor
Stefan Terholsen
Jürgen HERMELER
Ludger HORSTKÖTTER
Kathrin Quiter
Jürgen TEIGELER
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
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GEA Mechanical Equipment GmbH
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Publication date
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Application filed by GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Publication of EP2598251A2 publication Critical patent/EP2598251A2/fr
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    • 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
    • B04B2001/2075—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 means for recovering the energy of the outflowing liquid
    • 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
    • B04B2001/2083—Configuration of liquid 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 embodiments.
  • Nozzles on solid bowl centrifuges and their effect of energy saving with a corresponding orientation inclined to the drum axis are further from the DE 39 04 151 A1 known.
  • the JP 11 197547 A discloses a solid bowl screw centrifuge having at least one drain for discharging clarified liquid from a drum having at least one or more passages in a drum cover, each of which is associated with a weir plate defining an overflow weir at each of its radially inner edges Furthermore, at least one deflection device is formed in the drum cover, so that an emerging liquid flow is deflected in the radial direction.
  • They are for example formed as flat sheets, which are aligned parallel to the drum rotation axis, wherein the plane in which lie the flat sheets, the drum axis does not intersect and approximately at an angle of about 45 ° with the radially extending straight line, which in each case by the drum rotation axis and the respective passage opening extends.
  • the invention has, starting from this prior art, the task of creating a further optimized in terms of energy conservation solid bowl screw centrifuge.
  • the deflection device designed such that an escaping fluid flow while maintaining the overflow weir on the weir edge directly in the axial extension of the passage opening experiences a twist in the circumferential direction.
  • baffle is at least partially directly in the axial extension of the area of the passage opening not covered by the respective weir plate axially outside the passage opening and this covers axially in whole or in part.
  • the present invention leaves the overflow weir directly to the weir plates on the drum cover and only the liquid, which has already left the rotating system on the overflow weir, is deflected in the circumferential direction. After emerging from the drum, no clearing effect can occur any more, but the entire outgoing liquid jet is deflected by the deflector in the circumferential direction.
  • Fig. 2 should clarify the basic structure of a solid bowl centrifuge. The drive together with control, a hood and other obvious for the expert elements are not shown here.
  • Fig. 2 shows a solid bowl screw centrifuge 1 with a rotatable about a rotation axis D drum 3, in which a likewise rotatable screw 5 is arranged.
  • the drum 3 and the screw 5 each have a substantially cylindrical portion and a conically tapered portion here.
  • An axially extending centric inlet pipe 7 serves to supply the centrifuged material via a distributor 9 into the centrifugal space 11 between the screw 5 and the drum 3.
  • the screw 5 rotates at a slightly lower or greater speed than the drum 3 and promotes the ejected solid to the conical portion out of the drum 3 to the solids discharge 13.
  • the liquid flows to the larger drum diameter at the rear end of the cylindrical portion of the drum 3 and is derived there through a weir, the passage openings 15 in a drum cover 17, wherein each passage opening 15 is associated with a weir plate 19, which here radially adjustably mounted on the outside of the drum cover.
  • the inner radial edge of the weir plate thus defines an overflow edge and thus also the actual weir or overflow weir 21.
  • the drum cover or the at least one weir plate on the drum cover by the drum cover and the weir plate of Fig. 1 be replaced.
  • the drum lid 17 also has passage openings 15, to each of which a weir plate 19 is assigned.
  • the weir plates 19 are preferably directly outside the drum cover 17 aligned parallel to this.
  • the weir plates 19 in turn form at their relative to the axis of rotation D inner radius R k each have an overflow edge and thus an overflow weir 21.
  • a deflector 23 is preferably attached on the outside of each of the weir plates 19, a deflector 23 is preferably attached.
  • the deflecting device 23 preferably has in each case a supporting wall 25 extending parallel to the weir plate-an axial wall section-and a deflecting wall 27 oriented at right angles thereto.
  • the axial wall section may be flat or rounded.
  • the connecting line between the support wall 25 and the weir plate 19 carries the reference numeral 31.
  • the support wall 25 is preferably aligned with the overflow edge at the radius R k of the weir plate 19. This advantageously ensures that the actual weir 21 is not changed in its position, it is still formed by the inner edge or overflow edge R k of the weir plates 15 , This has the advantage that the advantageous properties of such overflow weir 21 are maintained on a weir plate 19.
  • connection line 31 radially further outwards, for example, 0, 5 mm to 3 mm further out.
  • the baffle 27 causes the actual deflection of the exiting product flow or the imposition of a twist in the circumferential direction, but does not change the position of the weir or the overflow edge.
  • the baffle 27 merely causes the liquid, which has flowed over the overflow weir, is deflected from the axial direction.
  • a deflection of the liquid jet is achieved substantially in the circumferential direction, resulting in an overall energy savings over a liquid leakage in the axial direction.
  • the baffle has an arcuate wall portion 27a and a subsequent planar wall portion 27b.
  • the arcuate portion 27a causes a deflection of the liquid phase flowing in the axial direction X from the drum 3 in the circumferential direction or the imposition of a twist in the circumferential direction (against the direction of rotation).
  • the flat wall portion 27b forwards the product flow one piece in this direction.
  • the arcuate portion 27a is dimensioned such that substantially the deflection of the product flow from the axial direction X takes place here against the direction of rotation U, so that a recoil effect results, which results in an energy saving or energy recovery.
  • the selected deflection angle ⁇ - which corresponds to the orientation of the planar wall section relative to the axial direction - is preferably less than 90 °, preferably the deflection angle ⁇ is approximately 70 to 85 °.
  • the deflection angle ⁇ is preferably smaller than 90 °, it is ensured in a simple manner that not too much of the drum 1 flowing out or exiting liquid is deflected so far from the axial direction that the liquid splashes against the outside of the drum cover 17 again which would mean a certain loss of energy.
  • the baffle 27 at least partially lies directly in the axial extension outside the passage opening and this covers completely or partially axially on the radius of the passage opening.
  • weir plate 17 and the deflector 23 are materially interconnected and thus form a structural unit.
  • the weir plates 17 and the deflector 23 mounted thereon are radially adjustable together, e.g. by means of screws (not shown), with which the weir plates 19 are screwed to the drum cover 17 respectively.
  • a plurality of screw holes 29 are preferably distributed radially offset from each other on the weir plates, so that by a suitable choice of screw holes 29 in a simple manner, the radial position of the weir plates 19 on the drum cover 17 is adjustable.
  • the construction according to the invention can be cleaned well. By maintaining the position of the overflow weir 21 is avoided that forms a space in which easily soiling can settle.

Landscapes

  • Centrifugal Separators (AREA)

Claims (10)

  1. Centrifugeuse à vis sans fin et à bol plein avec au moins une embouchure pour décharger le liquide décanté hors d'un tambour (3) muni d'un couvercle (17) dans lequel il y a un ou plusieurs passages (15) à chacun desquels est associée une plaque de barrage (19) présentant sur sa surface radiale intérieure un déversoir de superficie (21), ledit couvercle (17) étant en outre muni sur sa surface extérieure (23) d'au moins un déflecteur (23) de sorte qu'un jet de liquide émit soit dévié en direction circonférentielle ou soit chargé d'un effet de tors circonférentiel, caractérisée par le fait qu'au moins un déflecteur (23) est construit de sorte que le jet de liquide émit, tout en conservant l'effet du déversoir de superficie (21) sur le bord-déversoir de la plaque de barrage (19), soit dévié en direction circonférentielle, directement en prolongation axiale de la zone du passage (15) non couverte par la plaque de barrage (19).
  2. Centrifugeuse à vis sans fin selon la revendication 1, caractérisée par le fait que le déflecteur (23) est positionné, tout au moins partiellement, directement en prolongation axiale, extérieurement devant l'ouverture de passage et sur son rayon en la couvrant directement dans le sens axial totalement ou partiellement en prolongation axiale de la zone non couverte par la plaque de barrage (19).
  3. Centrifugeuse à vis sans fin selon la revendication 1 caractérisée par le fait qu'un déflecteur (23) est apporté sur plusieurs, de préférence sur chaque plaque de barrage (19).
  4. Centrifugeuse à vis sans fin selon la revendication 1 ou 2, caractérisée par le fait qu'au moins un déflecteur (23) présente une cloison d'appui (25) et une cloison de déviation (27) qui lui est orientée angulairement.
  5. Centrifugeuse à vis sans fin selon la revendication 3, caractérisée par le fait que la cloison d'appui (25) se présente comme une portion de cloison axiale et que la cloison de déviation (27) se présente de façon angulaire par rapport à la cloison d'appui (25).
  6. Centrifugeuse à vis sans fin selon une des revendications précédentes, caractérisée par le fait que la cloison d'appui (25) est en ligne avec le bord déverseur du déversoir de superficie (21) sur le rayon RK de la plaque de déviation (19).
  7. Centrifugeuse à vis sans fin selon une des revendications précédentes, caractérisée par le fait que la cloison de déviation (27) présente une portion courbe (27a).
  8. Centrifugeuse à vis sans fin selon la revendication 7, caractérisée par le fait que la cloison de déviation (27) présente en outre une portion de cloison (27b) plane faisant suite à la portion courbe (27a).
  9. Centrifugeuse à vis sans fin selon la revendication 8, caractérisée par le fait que la portion de cloison courbe (27a) est configurée de telle sorte qu'elle produise, essentiellement en direction circonférentielle, une déviation du liquide décanté sortant en direction axiale X du tambour 3.
  10. Centrifugeuse à vis sans fin selon l'une des revendication 7 ou 8, caractérisée par le fait que la portion de cloison courbe (27a) est dimensionnée de telle sorte qu'elle produise une déviation du jet de produit venant de la direction axiale X contre la direction de rotation U, selon un angle de déviation α inférieur ou égal à 90°, et de préférence d'environ 70 à 85°.
EP11735650.1A 2010-07-28 2011-07-25 Centrifugeuse à vis sans fin et à bol plein avec déversoir de débordement Active EP2598251B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010032503A DE102010032503A1 (de) 2010-07-28 2010-07-28 Vollmantel-Schneckenzentrifuge mit Überlaufwehr
PCT/EP2011/062722 WO2012013624A2 (fr) 2010-07-28 2011-07-25 Centrifugeuse à vis sans fin et à bol plein avec déversoir de débordement

Publications (2)

Publication Number Publication Date
EP2598251A2 EP2598251A2 (fr) 2013-06-05
EP2598251B1 true EP2598251B1 (fr) 2016-11-02

Family

ID=44628874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11735650.1A Active EP2598251B1 (fr) 2010-07-28 2011-07-25 Centrifugeuse à vis sans fin et à bol plein avec déversoir de débordement

Country Status (8)

Country Link
US (1) US9333514B2 (fr)
EP (1) EP2598251B1 (fr)
CN (1) CN102958615B (fr)
BR (1) BR112013003655B1 (fr)
DE (1) DE102010032503A1 (fr)
DK (1) DK2598251T3 (fr)
SG (1) SG185472A1 (fr)
WO (1) WO2012013624A2 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK176946B1 (da) * 2007-05-09 2010-06-14 Alfa Laval Corp Ab Centrifugalseparator og et væskefaseafløbsportelement
CA2732622C (fr) * 2008-08-15 2016-01-12 M-I Llc Inserts deversoirs pouvant etre changes pour une centrifugeuse
DK200801848A (en) * 2008-12-30 2010-07-01 Alfa Laval Corp Ab A decanter centrifuge and a decanter centrifuge discharge port memeber.
DE102012106226A1 (de) 2012-07-11 2014-01-16 Gea Mechanical Equipment Gmbh Vollmantel-Schneckenzentrifuge mit Überlaufwehr
DE102012014563B4 (de) 2012-07-23 2014-12-11 Flottweg Se Vollmantelschneckenzentrifuge mit einer Energierückgewinnungseinrichtung
JP5220950B1 (ja) * 2012-11-02 2013-06-26 巴工業株式会社 分離液噴射ノズル付き遠心分離機
DE102013001436A1 (de) * 2013-01-29 2014-07-31 Flottweg Se Vollmantelschneckenzentrifuge mit einer Wehrkante
EP2789395B2 (fr) 2013-04-08 2019-11-06 Flottweg SE Centrifugeuse à vis a bol plein dotée d'un dispositif de récupération d'énergie
GB2513358A (en) * 2013-04-24 2014-10-29 Nat Oilwell Varco Lp A centrifuge and a control system therefor
DE102014108722A1 (de) 2014-04-30 2015-11-05 Hiller Gmbh Schneckenzentrifuge
ES2787014T3 (es) * 2017-05-04 2020-10-14 Andritz Sas Centrifugadora decantadora
DE102017130904B4 (de) 2017-12-21 2019-07-11 Flottweg Se Auslassvorrichtung einer Vollmantelschneckenzentrifuge mit einem Umlenkgerinne
FR3121061B1 (fr) 2021-03-26 2023-08-04 Safran Aircraft Engines Procede de fabrication d’une piece en alliage metallique pour une turbomachine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5147277A (en) 1991-03-19 1992-09-15 Baker Hughes Incorporated Power-efficient liquid-solid separating centrifuge
JPH11197547A (ja) 1998-01-13 1999-07-27 Kubota Corp 横型遠心分離機における分離水の排出装置
WO2010076750A1 (fr) 2008-12-30 2010-07-08 Alfa Laval Corporate Ab Décanteuse centrifuge ayant un corps de distributeur à tiroir

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900415A1 (de) 1989-01-09 1990-07-12 Teves Gmbh Alfred Unterdruck-bremskraftverstaerker
JP3543597B2 (ja) 1997-12-22 2004-07-14 株式会社クボタ 横型遠心分離機における分離水の排出装置
JPH11197548A (ja) * 1998-01-13 1999-07-27 Kubota Corp 横型遠心分離機における分離水の排出装置
DE10203652B4 (de) 2002-01-30 2006-10-19 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge mit einem Wehr
US20040072668A1 (en) 2002-10-15 2004-04-15 Baker Hughes Incorporated Liquid phase discharge port incorporating chamber nozzle device for centrifuge
DK176946B1 (da) * 2007-05-09 2010-06-14 Alfa Laval Corp Ab Centrifugalseparator og et væskefaseafløbsportelement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5147277A (en) 1991-03-19 1992-09-15 Baker Hughes Incorporated Power-efficient liquid-solid separating centrifuge
JPH11197547A (ja) 1998-01-13 1999-07-27 Kubota Corp 横型遠心分離機における分離水の排出装置
WO2010076750A1 (fr) 2008-12-30 2010-07-08 Alfa Laval Corporate Ab Décanteuse centrifuge ayant un corps de distributeur à tiroir

Also Published As

Publication number Publication date
EP2598251A2 (fr) 2013-06-05
WO2012013624A3 (fr) 2012-03-29
US20140051565A1 (en) 2014-02-20
DK2598251T3 (en) 2017-02-13
SG185472A1 (en) 2012-12-28
BR112013003655A2 (pt) 2016-09-06
US9333514B2 (en) 2016-05-10
BR112013003655B1 (pt) 2020-12-08
DE102010032503A1 (de) 2012-02-02
CN102958615A (zh) 2013-03-06
WO2012013624A2 (fr) 2012-02-02
CN102958615B (zh) 2014-12-10

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