EP2050505B1 - Centrifugeuse et disque de séparation - Google Patents

Centrifugeuse et disque de séparation Download PDF

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Publication number
EP2050505B1
EP2050505B1 EP08166801.4A EP08166801A EP2050505B1 EP 2050505 B1 EP2050505 B1 EP 2050505B1 EP 08166801 A EP08166801 A EP 08166801A EP 2050505 B1 EP2050505 B1 EP 2050505B1
Authority
EP
European Patent Office
Prior art keywords
separator
corrugations
spacers
centrifuge according
separator discs
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
EP08166801.4A
Other languages
German (de)
English (en)
Other versions
EP2050505A2 (fr
EP2050505A3 (fr
Inventor
Kathrin Quiter
Andreas Penkl
Thomas Bathelt
Markus HÜLLMANN
Thomas Kleimann
Klaus Baalmann
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
Application filed by GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Publication of EP2050505A2 publication Critical patent/EP2050505A2/fr
Publication of EP2050505A3 publication Critical patent/EP2050505A3/fr
Application granted granted Critical
Publication of EP2050505B1 publication Critical patent/EP2050505B1/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
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • 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
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/14—Inserts, e.g. armouring plates for separating walls of conical shape
    • 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
    • B04B2001/2066—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 additional disc stacks

Definitions

  • the invention relates to a centrifuge according to the preamble of claim 1.
  • Trenntellerdigit show, for example, the DE 36 07 526 A1 or the DE-OS 19 09 996 or the US 2,599,629 ,
  • a generic separator is from the US 694,736 known.
  • Separator plates are commonly made of stainless steel. They are usually relatively thin.
  • the prior art is further the WO 2005/005050 in which it is proposed to subject the separation plates at least in sections to a surface treatment which alters the surface energy.
  • the separation plates consist of a material into which at least sections of the surface energy relative to the first material diffusing other material is diffused, for example, with processes which surface treatment methods of semiconductor technology are similar, ie for example with the aid of a plasma jet or the like. This procedure has proven itself.
  • the invention solves this problem by the subject matters of claim 1.
  • the separation plates are stabilized in a simple manner, which in turn has an advantageous effect in particular during operation.
  • the beads are adapted in adaptation to the processed product P and adapted to the product to be processed, that at the surface or on the lower surface of the separation plate in the separation plate stack no angle given to the horizontal, which are smaller than the angle of repose of the separated solid phase of the product to be processed. In this way it is effectively prevented that easily soiling can form on the plates, which would be the case with more contoured beads.
  • Circumferentially distributed at least two or more spacers between axially adjacent separation plates are preferably provided, which are preferably formed laschenformig and such that the contour of the spacers follows the contour of the beads. In this way, a minimum distance between the plates is ensured in the area of the beads.
  • the spacers are preferably dimensioned in the axial direction in such a way that they protrude upwards over the beads in the direction of the respectively axially adjacent separating plate.
  • the separation plates and their beads are formed such that each lower conical envelope surface and an upper conical envelope surface axially adjacent separation plate in angle segments between circumferentially adjacent spacers either just abut each other or do not touch between the spacers , wherein the respective lower envelope surface of the upper separator plate preferably lies above the respective upper of the envelope surface of the respectively lower separator plate.
  • the spacers may extend radially in a preferred embodiment, but they may also be curved or formed spirally or punctiform.
  • separation discs are also provided for the separator disc packs of centrifuges which are suitable for use in centrifuges of all kinds, such as in jet separators or e.g. suitable for use in discontinuous solids discharging separators or for use in decanters with a separator plate package.
  • Fig. 3a and b each show a schematic representation of a once clarifier ( Fig. 3a ) and once as a separator ( 3b ) formed centrifugal drum 1, in each of which a Trenntellervers 2 is inserted.
  • the function of such nozzle separators with an inlet 3 and processes 4, 5 and 4, 5, 6 has long been well known and therefore needs no further explanation.
  • FIG. 1 shows a schematic representation of a portion of a Trenntellervers invention 2 from stacked separation plates 7, which preferably consist of a steel sheet material.
  • the separation plates 7 may each have openings which form a climbing channel in interaction.
  • the separating plates are arranged axially spaced from each other, so that in each case a gap is formed between them.
  • the separation plates 2 have a conical basic shape 8 (see Fig. 2 ), so that a substantially conical plate stack 2 is formed.
  • a deviation from the conical basic shape 8 of the separating plates is produced by at least one or more beads 9 in the conical region of the separating plates 7.
  • the beads 9 in the separation plates 2 in the circumferential direction completely or at least between spacers 10 circumferentially formed.
  • the beads 9 stabilize the separating plates 7 in a simple manner and thus in particular simplify their handling, without adversely affecting the clarification or separation process.
  • At least two or more, in particular five or more, of the circumferential beads 9 are distributed from the inside to the outside in the conical region of the separation plates 7.
  • Each separating plate 7 is preferably provided with the beads 9 over the entire conical region.
  • the corrugations 9 form a wave-like contour with first and second inflection points (W1, W2) which lie above (inflection points W1) and below (inflection points W2) of the conical basic shape or contour 8 in the case of a separator with a vertically oriented rotation axis Z. , Through the beads 9 arise above the separation plate 7 such areas of different inclination to the axis of rotation or to the horizontal H.
  • the angle of repose of a product to be processed is here understood to mean the angle at which the solids of the solid phase would accumulate in the product to be processed in a puffed-up mass relative to the horizontal.
  • this condition is fulfilled in particular if one considers the beads 9 in cross-section as circular segments with a radius R, wherein the radius R is selected as a function of the angle ⁇ 1 of the basic contour 8 to the horizontal H such that at minimal resulting Angle ⁇ deposited solid particles still slide off the separation plates 7 ( Fig. 2 . 4 ).
  • At least two or more tab-like spacers 10 are provided circumferentially distributed, which serve to space the separation plates axially to each other.
  • These spacers 10 follow in the radial direction the shape of the beads 9, that is, they are preferably wave-shaped themselves.
  • they could also have a punctiform contour. They can be embossed in the separation plates or applied to these from strip material. Their contour follows the "wave contour" of the separation plate itself.
  • the separating plates 7 and their beads 9 are further preferably designed such that in each case a lower conical envelope surface 8 'and an upper conical envelope surface 8' axially adjacent separating plate 7 in angle segments between circumferentially adjacent spacers 10 either just touch or with each other in cover are or are not in such a coincidence that each lower envelope surface 8 of each upper separator plate 7 is preferably above the respective upper of the envelope surface 8 'of the respective lower separator plate 7.
  • the wave-like separating plates 7 are designed in a particularly advantageous manner such that the separation and / or clarification task to be realized is not hindered.
  • the spacers 10 may be applied to the forming of the separation plate 7 in the waveform on this or possibly subsequently. Preferably, they do not extend radially all the way to the largest diameter of the separating plates 7, so that they do not act in the circumferential direction in this area entraining.
  • Fig. 4a . b show this with reference to two mutually offset in the circumferential direction sections through two stacked separation plates and Fig. 5a . b on the basis of detail enlargements Fig. 4a , b.

Landscapes

  • Centrifugal Separators (AREA)

Claims (11)

  1. Centrifugeuse, en particulier séparateur ou centrifugeuse à vis sans fin à bol plein, avec un tambour centrifuge dans lequel est disposé un paquet de disques de séparation (2) composé de disques de séparation (7) empilés, avec des éléments d'écartement (10) formés entre les disques de séparation voisins dans le sens axial, dans laquelle l'au moins un disque de séparation ou plusieurs des disques de séparation (7) présentent au moins une ou plusieurs moulures (9) faisant entièrement ou partiellement le tour de la circonférence, caractérisée en ce que les éléments d'écartement sont conformés de telle manière que leur contour suive le contour ondulé des disques de séparation de sorte que les disques de séparation se tiennent à distance les uns des autres même au niveau des moulures (9) en dehors des éléments d'écartement (10).
  2. Centrifugeuse selon la revendication 1, caractérisée en ce que les disques de séparation (7) présentent au moins une zone ayant une forme de base conique (8), dont la géométrie des disques de séparation (7) diffère du fait des moulures circonférentielles.
  3. Centrifugeuse selon la revendication 1 ou 2, caractérisée en ce qu'au moins deux ou plus des moulures circonférentielles (9) sont réparties de l'intérieur vers l'extérieur dans la partie conique des disques de séparation (7).
  4. Centrifugeuse selon l'une des revendications précédentes dimensionnée pour le traitement d'un produit P précis, caractérisée en ce que pour l'adapter au produit P, les moulures (9) sont dimensionnées et adaptées au produit à traiter de telle manière qu'il n'y ait pas, sur la face supérieure ou la face inférieure des disques de séparation (7) dans la pile de disques de séparation (2), d'angles (β) par rapport à l'horizontale (H) plus petits que l'angle de glissement de la phase solide à séparer du produit à traiter.
  5. Centrifugeuse selon l'une des revendications 3 ou 4, caractérisée en ce que cinq ou plus des moulures circonférentielles (9) sont réparties de l'intérieur vers l'extérieur dans la partie conique des disques de séparation (7).
  6. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce que la géométrie des moulures (9) est reproduite à la manière d'un contour ondulé suivant le tracé d'une fonction trigonométrique.
  7. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce que les moulures (9) sont conformées comme des segments de cercle d'un rayon (R), lequel rayon (R) est choisi en fonction de l'angle (β) de la forme de base conique (8) par rapport à l'horizontale (H), de telle sorte qu'avec le plus petit angle (β) formé par rapport à l'axe de rotation (Z), les particules solides séparées glissent encore sur les disques de séparation (7).
  8. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce qu'au moins deux ou plus des éléments d'écartement (10) sont répartis sur la circonférence, en ce que les éléments d'écartement (10) sont conçus en forme de pattes et en ce que le contour des éléments d'écartement (10) suit celui des moulures (9).
  9. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce que les éléments d'écartement (10) sont dimensionnés dans le sens axial de telle façon qu'ils dépassent vers le haut au-delà des points d'inflexion supérieurs des moulures (9) en direction du disque de séparation (7) voisin vers le haut dans la direction de l'axe de rotation vertical.
  10. Centrifugeuse selon l'une des revendications 2 à 9, caractérisée en ce que les disques de séparation (7) et leurs moulures circonférentielles (9) sont conformés de telle manière qu'une surface d'enveloppe conique inférieure (8) et une surface d'enveloppe conique supérieure (8') de deux disques de séparation (7) voisin se recouvrent ou ne se recouvrent pas dans des segments angulaires entre des éléments d'écartement voisins, de telle façon que la surface d'enveloppe inférieure (8) du disque de séparation (7) du haut se trouve au-dessus de la surface d'enveloppe supérieure (8') du disque de séparation (7) du bas.
  11. Centrifugeuse selon l'une des revendications précédentes, caractérisée en ce que les disques de séparation (7) sont faits d'une tôle d'acier.
EP08166801.4A 2007-10-17 2008-10-16 Centrifugeuse et disque de séparation Active EP2050505B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007049697 2007-10-17

Publications (3)

Publication Number Publication Date
EP2050505A2 EP2050505A2 (fr) 2009-04-22
EP2050505A3 EP2050505A3 (fr) 2010-01-06
EP2050505B1 true EP2050505B1 (fr) 2016-04-06

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Application Number Title Priority Date Filing Date
EP08166801.4A Active EP2050505B1 (fr) 2007-10-17 2008-10-16 Centrifugeuse et disque de séparation

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EP (1) EP2050505B1 (fr)
DE (1) DE102008051867A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011050046A1 (de) 2011-05-02 2012-11-08 Gea Mechanical Equipment Gmbh Zentrifuge
DE102013101654A1 (de) 2013-02-20 2014-08-21 Gea Mechanical Equipment Gmbh Trenntellerpaket
WO2015145646A1 (fr) * 2014-03-27 2015-10-01 東京濾器株式会社 Séparateur d'huile
EP3231515B1 (fr) 2016-04-13 2020-09-30 Alfa Laval Corporate AB Disque de séparation pour séparateur centrifuge et emballage de disques comprenant de tels disques de séparation
WO2021149239A1 (fr) * 2020-01-24 2021-07-29 三菱化工機株式会社 Dispositif de séparation centrifuge et plaque de séparation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE163331C (fr) *
US694736A (en) * 1902-01-04 1902-03-04 Nicholas W Gales Liner for centrifugal liquid-separators.
US2599629A (en) 1948-10-30 1952-06-10 Rca Corp Electron discharge device and associated circuit
SE321896B (fr) 1968-02-29 1970-03-16 Alfa Laval Ab
DE3607526A1 (de) 1985-03-14 1987-09-10 Westfalia Separator Ag Zentrifuge mit einer selbstentleerenden schleudertrommel
ATE399594T1 (de) 2003-07-10 2008-07-15 Westfalia Separator Gmbh Trennteller und zentrifuge mit solchen trenntellern
ES2305819T3 (es) * 2003-08-08 2008-11-01 Westfalia Separator Gmbh Separador que tiene un tambor de centrifugado con un paquete de discos.

Also Published As

Publication number Publication date
EP2050505A2 (fr) 2009-04-22
DE102008051867A1 (de) 2009-04-23
EP2050505A3 (fr) 2010-01-06

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