EP2598251A2 - 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

Info

Publication number
EP2598251A2
EP2598251A2 EP11735650.1A EP11735650A EP2598251A2 EP 2598251 A2 EP2598251 A2 EP 2598251A2 EP 11735650 A EP11735650 A EP 11735650A EP 2598251 A2 EP2598251 A2 EP 2598251A2
Authority
EP
European Patent Office
Prior art keywords
weir
solid bowl
centrifuge according
drum
overflow
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.)
Granted
Application number
EP11735650.1A
Other languages
German (de)
English (en)
Other versions
EP2598251B1 (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
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=44628874&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2598251(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Publication of EP2598251A2 publication Critical patent/EP2598251A2/fr
Application granted granted Critical
Publication of EP2598251B1 publication Critical patent/EP2598251B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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.
  • DE 102 03 652 B4 discloses a solid bowl screw centrifuge with a device for discharging clarified liquid from a drum having a drum cover with a passage to which a throttle device, in particular a throttle plate, is assigned, whose distance from the passage is variable.
  • the passage further nozzles are assigned to the outlet of the clarified liquid, which are aligned for energy saving inclined to the radial direction through the drum axis.
  • Nozzles on solid bowl centrifuges and their effect of energy saving with a corresponding orientation inclined to the drum axis are also known from DE 39 004 151 A1.
  • Guiding plates can be assigned, which give the fluid emerging from the drum a twist, the occurring recoil effect to
  • the baffles are attached to the outside of the overflow weir, for example to the weir plates. They are for example formed as flat sheets, which are parallel to
  • Plates lie, the drum axis does not intersect and about an angle of about 45 ° with the radially extending straight line, which runs through the drum rotation axis and the respective passage opening.
  • the invention has, starting from this prior art, the task of creating a further optimized in terms of energy saving Vollmantel- screw centrifuge. The invention solves this problem by the subject matter of claim 1.
  • the deflection device configured such that an escaping liquid flow while maintaining the overflow weir at the weir edge directly in the axial extension of
  • Embodiment for example, characterized in that the baffle at least partially directly in the axial extension of not covered by the respective weir plate portion of the passage opening is located axially outside the passage opening and this covers axially in whole or in part.
  • Passage opening to assign a housing, in which case the overflow weir or a nozzle in a sloping side of the housing at the passage opening
  • 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. Further advantageous embodiments can be found in the remaining subclaims.
  • FIG. 1 shows a schematically illustrated drum lid of a solid bowl screw centrifuge according to the invention.
  • Fig. 2 is a schematic view of a known solid bowl screw centrifuge.
  • Fig. 2 is intended to illustrate the basic structure of a solid bowl screw 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 in the centrifugal space 1 1 between the screw 5 and the drum.
  • 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 over a weir, the passage openings 15 in a drum cover 17 has, each
  • Passage opening 15 is associated with a weir plate 19, which here radially adjustably mounted on the Au .seite 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.
  • Drum cover by the drum cover and the weir plate of Fig. 1 are replaced.
  • the drum cover 1 7 also has passage openings 1 5, each of which a weir plate 1 9 is assigned.
  • the weir plates 19 are preferably directly au Shen on the drum cover 1 7 aligned in parallel to this.
  • the weir plates 1 9 in turn form at their relative to the axis of rotation D inner radius Rk each have an overflow edge and thus an overflow weir 21.
  • Au Shen is preferably attached to each of the weir plates 1 9 a deflector 23 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 1 9 carries the reference numeral 31.
  • the support wall 25 is preferably aligned with the overflow edge at the radius Rk of the weir plate 1 9. This achieves advantageous that the actual weir 21 is not changed in terms of its location, it is still from the
  • Overflow weirs 21 are maintained on a weir plate 19.
  • the support wall 25 is offset slightly radially outward Shen relative to the support wall, so that the connecting line 31 radially outer Shen further Shen, for example, 0, 5 mm to 3 mm further au Shen runs.
  • 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. Such is a distraction of the
  • Liquid jet reaches substantially in the circumferential direction, resulting in an overall energy savings compared to a liquid leakage in the axial direction.
  • the baffle a it is advantageous if the baffle a
  • arcuate wall portion 27a and has 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.
  • Wall portion relative to the axial direction corresponds - is preferably less than 90 °, preferably, the deflection angle ⁇ is about 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. In this way, compared to the generic JP 1 1 - 179236, the advantage is achieved that a larger proportion of the outflowing liquid is already on the
  • the invention ensures that the radial position of the actual weir is not changed but is still defined by the edge of the weir plates. It is particularly advantageous if the weir plate 1 7 and the deflector 23 are materially interconnected and thus form a structural unit.
  • the weir plates 17 and attached thereto are preferably identical to the weir plates 17 and attached thereto.
  • Deflector 23 together radially adjustable, 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)

Abstract

L'invention concerne une centrifugeuse à vis sans fin et à bol plein avec au moins une sortie pour évacuer du liquide clarifié hors d'un tambour (3), qui présente au moins un ou plusieurs passages (15) dans un couvercle de tambour (17) auquel ou auxquels est associée à chaque fois une plaque de déversoir (19). Ces plaques de déversoir (19) forment sur leur bord radial interne à chaque fois un déversoir de débordement (21), au moins un dispositif de déviation (23) étant en outre réalisé à l'extérieur sur le couvercle de tambour (17). Ce dispositif de déviation (23) est réalisé de telle sorte qu'un flux de liquide sortant soit dévié dans la direction périphérique ou subisse un entraînement de tourbillonnement dans la direction périphérique, l'au moins un dispositif de déviation (23) étant réalisé de telle sorte que le flux de liquide sortant soit dévié dans la direction périphérique en conservant le déversoir de débordement (21) sur l'arête de débordement de l'au moins une plaque de déversoir (19) directement dans le prolongement axial de la région de l'ouverture de passage (15) non recouverte par la plaque de déversoir respective.
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 true EP2598251A2 (fr) 2013-06-05
EP2598251B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014108722A1 (de) 2014-04-30 2015-11-05 Hiller Gmbh Schneckenzentrifuge

Families Citing this family (12)

* 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
EP2331264B1 (fr) * 2008-08-15 2017-05-03 M-I Llc 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
PL3398687T3 (pl) * 2017-05-04 2020-08-24 Andritz S.A.S. Wirówka dekantacyjna
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

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Publication number Priority date Publication date Assignee Title
DE3900415A1 (de) 1989-01-09 1990-07-12 Teves Gmbh Alfred Unterdruck-bremskraftverstaerker
US5147277A (en) 1991-03-19 1992-09-15 Baker Hughes Incorporated Power-efficient liquid-solid separating centrifuge
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
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
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
DK200801846A (en) 2008-12-30 2010-07-01 Alfa Laval Corp Ab A decanter centrifuge with a slide valve body

Non-Patent Citations (1)

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See references of WO2012013624A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014108722A1 (de) 2014-04-30 2015-11-05 Hiller Gmbh Schneckenzentrifuge

Also Published As

Publication number Publication date
WO2012013624A2 (fr) 2012-02-02
CN102958615A (zh) 2013-03-06
BR112013003655B1 (pt) 2020-12-08
DE102010032503A1 (de) 2012-02-02
US20140051565A1 (en) 2014-02-20
BR112013003655A2 (pt) 2016-09-06
WO2012013624A3 (fr) 2012-03-29
EP2598251B1 (fr) 2016-11-02
CN102958615B (zh) 2014-12-10
SG185472A1 (en) 2012-12-28
DK2598251T3 (en) 2017-02-13
US9333514B2 (en) 2016-05-10

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