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EP2830777B2 - Arrangement de séparateur - Google Patents
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EP2830777B2 - Arrangement de séparateur - Google Patents

Arrangement de séparateur Download PDF

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Publication number
EP2830777B2
EP2830777B2 EP13714233.7A EP13714233A EP2830777B2 EP 2830777 B2 EP2830777 B2 EP 2830777B2 EP 13714233 A EP13714233 A EP 13714233A EP 2830777 B2 EP2830777 B2 EP 2830777B2
Authority
EP
European Patent Office
Prior art keywords
negative pressure
chamber
drum
drive
separator arrangement
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
EP13714233.7A
Other languages
German (de)
English (en)
Other versions
EP2830777B1 (fr
EP2830777A2 (fr
Inventor
Wilfried Mackel
Thomas Bathelt
Andreas Penkl
Dieter Strauch
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
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Application filed by GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Priority to PL13714233T priority Critical patent/PL2830777T3/pl
Publication of EP2830777A2 publication Critical patent/EP2830777A2/fr
Publication of EP2830777B1 publication Critical patent/EP2830777B1/fr
Application granted granted Critical
Publication of EP2830777B2 publication Critical patent/EP2830777B2/fr
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge
    • 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
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/02—Other accessories for centrifuges for cooling, heating, or heat insulating
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/02—Electric motor drives

Definitions

  • the invention relates to a separator arrangement according to the preamble of claim 1.
  • centrifuge drums are arranged and operated in a room that has a negative pressure relative to the environment.
  • separator arrangement shown and its counterpart used in practice have a separator drum for liquid/liquid/solid separation with a vertical axis of rotation, which is arranged in a sealed container or hood space in which a negative pressure relative to the environment is generated by a pump can be.
  • the separator drum has an inlet pipe and one or more peeling disks for discharging the one or more liquid phases as well as solids discharge openings for the continuous or intermittent discharge of solids.
  • a separator arrangement according to the preamble of claim 1 is from WO 2010/101524 A2 known.
  • the generic construction and its mode of operation have proven themselves. However, there is a need for further improvement in the known separator assembly and the method of operating it.
  • the invention solves this problem through the subject matter of claims 1 and 10.
  • the drive chamber is also placed under negative pressure relative to the environment, in particular in order to achieve energy savings on rotating parts of this area.
  • a negative pressure is generated relative to the environment in whole or at least in a partial area.
  • the drive room area can be evacuated with a pump or another device that generates negative pressure and / or it is connected to the (hood) room that surrounds the drum, so that a pump or a corresponding device, which additionally creates a vacuum in this room generated, can also create a vacuum in the drive room. Since the hood space in which the drum is arranged is also placed under negative pressure relative to the environment, energy savings can also be achieved here.
  • a drive compartment of a laboratory centrifuge under vacuum (which does not operate continuously) is from the JP 2032 058359 W known.
  • a variant for a vacuum connection can be a connection via a hole in the spindle.
  • the free end of the spindle is guided through the sealed frame wall at the bottom and the connection to a vacuum system is made via sealed connections.
  • the hole in the spindle ends in the area below the drum in the hood space.
  • the passage of the spindle through the frame wall is also sealed using sliding elements.
  • the technological background is the laboratory centrifuge, which cannot be used continuously JP 32 58 359 A called, in which the products to be spun are held in sample glasses so that the product is well protected during centrifuging.
  • a negative pressure is generated below the atmospheric pressure, in particular 0.3 bar smaller than this, preferably 0.4 bar smaller than this, in particular 0.7 bar smaller than this.
  • the value of the negative pressure in the hood space with the drum is changed during operation depending on the operating state.
  • a change in the negative pressure can also take place before, during or after a change in the operating state.
  • the change in the operating state that occurs before, during or after the change in negative pressure can be an emptying of solids.
  • the negative pressure can be increased slightly shortly before or at least during emptying (e.g. from 0.2 bar to 0.5 bar) and lowered again after emptying (e.g. back to 0.2 bar), thus during solids emptying no adverse effects occur due to the high negative pressure.
  • the change in the operating state that occurs before, during or after the change in negative pressure can be a start-up or shutdown/run-down phase.
  • the invention is particularly suitable for a separator arrangement with a separator with a drum with a vertical axis of rotation, which is placed on a rotatable spindle and surrounded by a hood, the drums having a drum diameter greater than 500 mm, in particular 800 mm, very particularly preferably greater than 900 mm and/or speeds e.g. greater than 8000 rpm, 5000 rpm, 4000 rpm during operation.
  • the peripheral speed at the outer diameter of the drum is at least 100 m/s or more.
  • the surface area of the drum is also preferably 0.5m 2 to 5m 2 , in particular 1-3.5 m 2 , so that the effect of supporting the negative pressure generation has a particularly advantageous effect.
  • Fig. 1 shows a separator arrangement 1 with a separator with a vertical axis of rotation D, which has a rotatable drum 2 which is placed on a rotatable drive spindle 3.
  • the product supply of a product P that can be processed in continuous operation is preferably carried out from above through a supply pipe 4 (not shown in detail here).
  • This structure is preferred.
  • a hanging drum with a drive above the drum can also be implemented.
  • the product to be processed is continuously fed into the drum, continuously centrifuged and at least one or all of the phases formed during the clarification and/or separation are also continuously removed. Liquid phase(s) is/are continuously drained away. Any solid phase that may also be formed can be discharged continuously through nozzles or non-continuously, for example with openings that can be closed by piston valves.
  • the drum 2 is designed here to separate the product P to be processed into at least one liquid phase L or several liquid phases and a solid phase S. It points here like the drum of the EP 1 119 416 B1 or the counterpart used in practice preferably has a stack of separating plates inside (not visible here).
  • the liquid phases L are drained from the drum 2 via liquid outlets, in particular peeling disks in the manner of a centripetal pump.
  • the solids phase S is discharged either discontinuously at discontinuously closable solids discharge openings 5 in the drum shell or continuously through nozzles in the drum shell.
  • the drum 2 is inserted into a hood space 6 that is sealed against the environment.
  • This hood space 6 is delimited here by a hood 7, which is fixed to a foundation - here a machine frame 8 -, a cover 9 below the drum, which is fixed to the hood 7, and a spindle housing 10, which is penetrated by the drive spindle 3 , fixed.
  • a solids catcher 11 is also formed in the hood 7, which serves to divert solids escaping from the drum from the hood space through a solids discharge line 12.
  • a pump 14a (or another device for lowering the pressure in the hood space 6 relative to the environment) is also connected to a vacuum connection 13 to the hood space 6, with which a negative pressure relative to the environment U outside the hood space 6 can be generated in the hood space 6 .
  • This vacuum connection 13 is preferably formed at a location which lies on a relatively large radius R p relative to the axis of rotation D, in particular on a radius which is equal to or larger than the largest radius R T of the drum 2.
  • the energy consumption of the separator arrangement 1 is further reduced here in that not only the hood space 6, in which the drum 2 is arranged, but also a drive space 15, in which one or more components of a separator drive 16 are arranged , is designed to be sealed in such a way that a negative pressure, in particular a negative pressure of more than 0.2 bar, compared to the ambient pressure in the environment U can be generated in it with at least one further pump 14b or also with the pump 14a or during operation is produced.
  • the drive chamber 15 is delimited here by a drive housing 17, which is in turn designed in a correspondingly sealed design in accordance with the task of generating a negative pressure in the drive chamber 15 relative to the environment U. This is what we are looking for Fig. 1 between elements of the drive housing 17, suitable seals 18 are formed.
  • the pump 14b can be connected to a vacuum connection 20 of the drive chamber 15.
  • One or more or even all elements of the separator drive 16 are accommodated in the drive chamber 15. Only the drive spindle 3 protrudes Fig. 1 from the drive compartment with its upper end into the hood compartment.
  • the spindle bearing is preferably arranged entirely or partially - here both a neck bearing 21a and a foot bearing 21b - in the negative pressure area.
  • a neck bearing 21a and a foot bearing 21b - in the negative pressure area.
  • one (in particular the neck bearing 21a) or both bearings 21a, b do not belong to this negative pressure area.
  • the spindle housing 10 is supported on the machine frame 8 in a flange area on elastic elements 40.
  • the rotor 22a is attached here directly to the drive spindle 3 and the stator 22b is in a motor housing 23, which in turn is attached to the side of the machine frame 8 facing away from the hood space 6.
  • a direct drive can preferably be accommodated in the drive space, although the electric drive motor 22 could also be arranged between the bearings 21a, b (the latter variant not shown here). It is also conceivable to accommodate the drive motor in the negative pressure area of the drive chamber 15, which is connected to the drive spindle 3 via a coupling (also not shown here).
  • a lubrication system 24 is also arranged in the drive chamber 15, which serves to lubricate the spindle bearing 21 and/or to lubricate components on the engine.
  • the lubrication system here has a lubricant circuit, which has the elements oil container 25, pump 26, supply line 27a, b to the spindle bearing 21, oil collecting container 28, which is connected to the spindle in a rotationally fixed manner and in which it is located on a radius during operation due to the cup-like design Oil level forms, a peeling element 29, which drains the oil in the collecting container, and a return line 27c, d into the oil container 25.
  • all of these elements of the lubrication system are advantageously and compactly accommodated in the negative pressure area, i.e. in the drive room.
  • Outflow and supply lines 30, 31, 32, 33 from one or more coolant circuits also open into the drive chamber, here once for the motor 22 and once for the lubrication system 24.
  • One or more through openings 34, 35, 36, 37 are also formed in the machine frame, which ensure that, if possible, no pressure gradients arise within the drive chamber 15.
  • hood space 6 and the drive space 15 are not sealed against each other.
  • this is achieved by way of example and simply in that the cover 9 below the drum 2 is not sealed radially on the inside of the spindle housing 10, but rather that a gap 42 is formed between these elements, which ensures pressure equalization between the hood space 6 and the drive space 15. No sealing, e.g. no mechanical seal, is required.
  • the suction takes place at a radius of the hood 7, which, based on the axis of rotation, lies on a radius that is greater than 80%, in particular more than 100%, of the largest drum radius.
  • the support provided by the drum differential pressure effect is particularly advantageous.
  • a vacuum connection on a solids container (not shown here) is also conceivable.
  • the separator arrangement according to the type Fig. 1 also meets the highest energy saving requirements.
  • the pump (14a) is designed to generate the substructure by suction on a large, in particular largest, diameter of the hood.
  • the suction takes place at a diameter of the hood which, based on the axis of rotation, is at a larger radius than the largest drum radius.
  • the support provided by the drum differential pressure effect is particularly advantageous.

Landscapes

  • Centrifugal Separators (AREA)
  • Rotary Pumps (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Claims (12)

  1. Installation de séparateur pour le traitement d'un produit en fonctionnement continu, avec
    a) un tambour (1) disposé avec possibilité de rotation dans un espace de hotte (6) avec un axe de rotation vertical (D) qui est posé sur une broche d'entraînement (3) rotative,
    b) un espace d'entraînement (15) qui contient un, plusieurs ou tous les composants d'un entraînement de séparateur (23),
    c) une conduite d'évacuation d'un piège à solides (11),
    d) un raccord de dépression (13) sur ou dans l'espace de hotte (6),
    e) l'espace de hotte (6) étant hermétique vis-à-vis de l'environnement (U), et une dépression pouvant être produite en fonctionnement dans l'espace de hotte (6) par rapport à l'environnement (U) à l'extérieur de l'espace de hotte (6) avec un ou le dispositif produisant la dépression, en particulier une pompe (14a),
    caractérisée en ce qu'elle comprend
    f) une rigole pour les solides,
    g) le raccord de dépression (13) étant formé en dessous de la rigole pour les solides et de la conduite d'évacuation (12) d'un piège à solides (11), le raccord de dépression formé sur/dans l'espace de hotte (6) se trouvant sur un rayon de la hotte (7) par rapport à l'axe de rotation (D) du tambour (2) qui est plus grand que 80 % du rayon maximal du tambour (2) et
    h) une construction hermétique de l'espace d'entraînement (15) et au moins un dispositif produisant une dépression, en particulier une pompe (14a, b) pour générer une dépression dans l'espace d'entraînement (15) hermétique vis-à-vis de l'environnement (U) à l'extérieur de l'espace d'entraînement (15).
  2. Installation de séparateur selon la revendication 1, caractérisée en ce que l'espace de hotte (6) et l'espace d'entraînement (17) sont hermétiques vis-à-vis l'un de l'autre, de sorte qu'une pression différente peut régner dans l'un et l'autre en fonctionnement.
  3. Installation de séparateur selon la revendication 1, caractérisée en ce qu'au moins une liaison est formée entre l'espace de hotte (6) et l'espace d'entraînement (15) afin de créer un équilibrage de la pression entre ces espaces (6, 15).
  4. Installation de séparateur selon l'une des revendications précédentes, caractérisée en ce que le raccord de dépression se trouve sur un rayon de la hotte (7) par rapport à l'axe de rotation (D) du tambour (2) qui est plus grand que 100 % du rayon maximal du tambour (2).
  5. Installation de séparateur selon l'une des revendications précédentes, caractérisée en ce que la hotte (7) et le tambour (2) présentent une forme conique dans leur partie supérieure dans le sens vertical.
  6. Installation de séparateur selon l'une des revendications précédentes, caractérisée en ce que le tambour (2) présente un ou plusieurs disques racleurs servant de sortie de liquide et en ce qu'il présente en outre de préférence des ouvertures d'évacuation des solides qui évacuent les solides de façon continue ou discontinue.
  7. Installation de séparateur selon l'une des revendications précédentes, caractérisée en ce qu'au moins un ou tous les composants d'un système de lubrification à huile, en particulier d'un système de lubrification par circulation, sont disposés dans l'espace d'entraînement (15) pouvant être soumis à une dépression.
  8. Installation de séparateur selon l'une des revendications précédentes, caractérisée en ce qu'un moteur d'entraînement (22) est disposé dans l'espace d'entraînement (15) pouvant être soumis à une dépression.
  9. Installation de séparateur selon la revendication 8, caractérisée en ce que le moteur d'entraînement (22) est refroidi par liquide.
  10. Procédé pour la conduite d'un séparateur selon l'une des revendications précédentes, caractérisé en ce que la dépression dans l'espace de hotte (6) est modifiée pendant le fonctionnement.
  11. Procédé selon la revendication 10, caractérisé en ce que la dépression dans l'espace de hotte (6) est modifiée pendant le fonctionnement en fonction de l'état de fonctionnement actuel ou attendu.
  12. Procédé selon l'une des revendications 10 ou 11, caractérisé en ce que la pression dans l'espace de hotte est augmentée avant les vidages des solides.
EP13714233.7A 2012-03-26 2013-03-22 Arrangement de séparateur Active EP2830777B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13714233T PL2830777T3 (pl) 2012-03-26 2013-03-22 Układ separatora

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012102593 2012-03-26
DE102013100180.7A DE102013100180B4 (de) 2012-03-26 2013-01-09 Separatoranordnung
PCT/EP2013/056015 WO2013143985A2 (fr) 2012-03-26 2013-03-22 Arrangement de séparateur

Publications (3)

Publication Number Publication Date
EP2830777A2 EP2830777A2 (fr) 2015-02-04
EP2830777B1 EP2830777B1 (fr) 2018-04-25
EP2830777B2 true EP2830777B2 (fr) 2024-01-10

Family

ID=49112330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13714233.7A Active EP2830777B2 (fr) 2012-03-26 2013-03-22 Arrangement de séparateur

Country Status (12)

Country Link
US (1) US10105717B2 (fr)
EP (1) EP2830777B2 (fr)
CN (1) CN104271249B (fr)
AU (1) AU2013242071B2 (fr)
BR (1) BR112014023659B1 (fr)
DE (1) DE102013100180B4 (fr)
DK (1) DK2830777T3 (fr)
NZ (1) NZ700141A (fr)
PL (1) PL2830777T3 (fr)
RU (1) RU2622946C2 (fr)
TR (1) TR201809513T4 (fr)
WO (1) WO2013143985A2 (fr)

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DE102018108471A1 (de) * 2018-04-10 2019-10-10 Gea Mechanical Equipment Gmbh Verfahren, mit dem ein Schmiermitteldurchfluss an einer Zentrifuge überwacht wird
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CN112170023B (zh) * 2020-09-18 2022-05-27 中国人民解放军陆军军医大学第二附属医院 一种离心机
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Also Published As

Publication number Publication date
NZ700141A (en) 2016-07-29
WO2013143985A2 (fr) 2013-10-03
US10105717B2 (en) 2018-10-23
AU2013242071B2 (en) 2017-07-06
EP2830777B1 (fr) 2018-04-25
TR201809513T4 (tr) 2018-07-23
DK2830777T3 (en) 2018-07-23
PL2830777T3 (pl) 2018-09-28
US20150051059A1 (en) 2015-02-19
WO2013143985A3 (fr) 2014-06-26
EP2830777A2 (fr) 2015-02-04
BR112014023659B1 (pt) 2020-06-30
DE102013100180A1 (de) 2013-09-26
RU2622946C2 (ru) 2017-06-21
DE102013100180B4 (de) 2025-05-15
CN104271249A (zh) 2015-01-07
CN104271249B (zh) 2016-07-06
RU2014142175A (ru) 2016-05-20
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