EP2424675B1 - Séparateur centrifuge - Google Patents

Séparateur centrifuge Download PDF

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Publication number
EP2424675B1
EP2424675B1 EP10716333.9A EP10716333A EP2424675B1 EP 2424675 B1 EP2424675 B1 EP 2424675B1 EP 10716333 A EP10716333 A EP 10716333A EP 2424675 B1 EP2424675 B1 EP 2424675B1
Authority
EP
European Patent Office
Prior art keywords
separator
disk assembly
assembly section
separating
section
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
EP10716333.9A
Other languages
German (de)
English (en)
Other versions
EP2424675A1 (fr
Inventor
Wilfried Mackel
Helga Tietz
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
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 EP2424675A1 publication Critical patent/EP2424675A1/fr
Application granted granted Critical
Publication of EP2424675B1 publication Critical patent/EP2424675B1/fr
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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a separator according to the preamble of claim 1.
  • Generic separators are from the DE 195 08 334 A1 and the DD 288 322 A5 known.
  • Another such construction is from the DE-AS 1 141 951 known.
  • This document shows a separator with a centrifugal drum into which a separating plate package is inserted, the separating plate package being divided into two separating plate package sections below and above this separating plate by a separating plate which has a larger diameter than the other separating plates.
  • a product to be processed is fed through a feed in the drum shaft and enters the separation chamber via a distributor. There it in turn enters a riser channel of the separator plate package, which extends over the entire height of the separator plate package.
  • the centrifugal material entering the separation chamber is freed from the main part of the sludge in the space below the separation plate, which forms a sludge cushion on the circumference of the separation chamber.
  • the heavy liquid is prevented by the sludge pad from stepping around the outer edge of the larger diameter separating plate.
  • the remaining light liquid is separated off and collected in the upper separator plate section.
  • the separated heavy liquid is discharged from the separation chamber through a channel with a larger diameter and the separated light liquid through another channel with a smaller diameter of the centrifugal drum.
  • the position of the separation plate with a larger diameter can be varied depending on the application in the separation chamber. According to a preferred embodiment, it is approximately at the height of piston slide openings for discharging solid matter from the centrifugal drum.
  • the invention has the task of optimizing the separating and clarifying action in a simple manner compared to the generic centrifuge.
  • each of these sections can be optimally designed with regard to the respective task, for example with regard to the separating gap width or the separating plate and tab geometry.
  • the lower separating plate package section is designed as the separating device and the upper separating plate packet section as the clarifying device, in order first to separate the lighter liquid phase from the centrifuged material to be processed and to then separate the remaining solids in the separating plate packet section, which acts exclusively as a clarifying device.
  • the separating plate stack is sealed radially inwards in this area, which can be implemented in a variety of ways.
  • a separating plate package 2 made up of a plurality of separating plates 3 is arranged concentrically to the axis of rotation D.
  • the separating plates 3 have a conical shape, are stacked axially one above the other and are spaced apart by means of spacers (tabs and the like), not shown here.
  • the separating plate package 2 is held directly or via a holder on a distributor shaft 4 of a distributor 5 which can be rotated during operation and is secured against rotation relative to the latter.
  • the separator plate package 2 has a lower separator plate section 6 made of stacked lower separator plates 3a and an upper separator plate section 7 made of upper separator plates 3b, the lower separator plate section 6 and the upper separator plate section 7 being provided with a separating plate 3c which has a larger diameter than the other separating plates 3a , 3b and here also a greater thickness or wall thickness are separated from one another in the axial direction.
  • the lower separator plate section 6 is designed as a separating device for separating two liquid phases L1, L2 and the upper separating plate section 7 as a clarifying device for clarifying one of the liquid phases L2 from solids S.
  • the centrifuged material to be clarified - in particular milk - is fed into the rotating system through a central inlet pipe 8 which does not rotate during operation in the region of the distributor 5.
  • the distributor 5 has distributor channels 9 which open below the corresponding riser channels 10 in the lower separating plate package section 6 into the separating space.
  • the rising channels 10 lie on a first, inner radius R1.
  • the two liquid phases L1, L2 of different specific weights are separated from one another (in the case of milk, cream L1 and skim milk L2).
  • the liquid phase L2 with the higher specific weight - in the case of milk, the skimmed milk - on the other hand, is passed through one or more riser channels 14, which advantageously pass through the lower separator plate section 6, the separator plate 3c of larger diameter and the upper separator plate section 7.
  • the one or more riser channels 14 in the upper separator plate section 7 lie on a larger radius R2 than the one or more riser channels 10 in the lower separator plate section 6.
  • the clarified skimmed milk L1 is passed through one or more discharge channels 15 passing through the upper separating plate package section 7 into a second peeling chamber (not shown here) and from there with a second peeling disc (not shown here) from the rotating system.
  • solids are discharged discontinuously through solids discharge openings 18, which are preceded by a piston valve 19.
  • a further solid phase S can be discharged via a separating plate (not shown here) arranged vertically above the separating plate compact 2 through a third peeling chamber (not shown here) with a third peeling disc.
  • An arrangement can also be used to control the piston slide 19 when no more liquid L2 is drained off through the third peeling disc then present.
  • the upper separating plate package section 7 has the special feature that the individual separating plates 3b of this separating plate package are sealed axially relative to one another in an area lying radially inward to the one or more discharge channels for the liquid phase L2 (as the clarified skimmed milk, if applicable), so that none Liquid can flow from the upper separating plate packet section 7 into the discharge channel 11 or pipes lying radially inside to the sealed area and thus into the first peeling chamber.
  • the 2a to 2d each show by way of example three separating plates 3b, each consisting of an inner separating plate section 30 which is oriented perpendicular to the axis of rotation D and an outer - conical - separating plate section 31 which encloses an angle ⁇ with the axis of rotation D.
  • the separating plates 3b of the upper separating plate packet section 7 are sealed relative to one another in their radially inner separating plate section 30 by means of seals, in particular sealing rings 23 ( 2a to 2c ).
  • the seals can be in the form of flat seals 23a with a preferably rectangular cross section ( Fig. 2a ) be designed or as seals with a different, preferably round or elliptical cross-section ( 2b, 2c ).
  • the seals 23 are arranged in the plate gaps 25 between vertically adjacent separating plates 3b of the upper separating plate package section 7. They are preferably designed as circumferential sealing rings. However, it is also conceivable to arrange only ring segments as seals, for example, in the area between spacer plates of axially adjacent separating plates.
  • a particularly good sealing effect is achieved in that the seals 23 are introduced in correspondingly shaped receiving grooves 24 which are formed in the separating plates. To Fig. 2b align these receiving grooves 24 in the vertical direction. To Fig. 2c on the other hand, provision is made for the receiving grooves (ring grooves) 24 to be radially offset from one another in vertically superimposed separating plates 3b, so that the seals in vertically successive separating plate gaps 25 between adjacent separating plates 3b each lie on different radii.
  • the sealing radially inwards is not achieved by separate seals, but rather in that the vertical adjacent separating plates are in each case directly adjacent to each other in sections, for example in a conical steep area 32 in which the conicity angle ⁇ is significantly smaller than the conicity angle ⁇ to the axis of rotation D. , so that the adjacent separating plates 3b touch each other directly in this area.
  • the separating gaps 25 between vertically adjacent separator plates 3a preferably have a smaller distance than in the upper separator plate section 7.
  • ⁇ b> ⁇ u> reference number ⁇ //> ⁇ /b> Centrifugal drum 1 Plate pack 2nd Plate 3, 3a, 3b, 3c Distribution body 4th Distributor 5 lower separator plate section 6 upper separator plate section 7 Inlet pipe 8th Distribution channel 9 Riser 10th Discharge channel 11 Risers 14 Drainage channels 15 Solid discharge openings 18th Spool 19th Seals 23 Gaskets 23a Grooves 24th Separation plate column 25th Separating plate sections 30, 31 Steep area 32 Radii R1, R2, Axis of rotation D Liquid phase L1, L2 Solid phase S

Landscapes

  • Centrifugal Separators (AREA)

Claims (14)

  1. Séparateur muni d'un tambour de centrifugation (1) à axe de rotation vertical, dans lequel est disposé un paquet de disques de séparation (2) qui se compose de plusieurs disques de séparation (3) empilés les uns par-dessus les autres et divisé en une partie de paquet de disques de séparation inférieure (6) et une partie de paquet de disques de séparation supérieure (7), dans lequel
    a. une partie de paquet de disques de séparation inférieure (6) est conçue comme un dispositif de séparation pour la séparation d'une matière à centrifuger entrante en deux phases liquides (L1, L2) dans le champ de centrifugation ou comme un dispositif combiné de séparation et de clarification pour la séparation d'une matière à centrifuger entrante en deux phases liquides (L1, L2) dans le champ de centrifugation et pour séparer une phase solide,
    b. l'autre partie de paquet de disques de séparation supérieure (7) est conçue comme un dispositif de clarification pour séparer des solides (S) d'une phase liquide,
    caractérisé en ce que
    c. la partie de paquet de disques de séparation supérieure (7) servant de dispositif de clarification est construite de façon à être étanche dans le sens radial vers l'intérieur.
  2. Séparateur selon la revendication 1, caractérisé en ce que la partie de paquet de disques de séparateur supérieure (7) est exclusivement conçue comme un dispositif de clarification.
  3. Séparateur selon l'une des revendications précédentes, caractérisé en ce que dans la partie de paquet de disques de séparation supérieure (7) jouant le rôle d'un dispositif de clarification, les interstices (25) entre les disques de séparation (3b) voisins dans le sens vertical sont rendus étanche dans le sens radial vers l'intérieur au moyen de garnitures d'étanchéité (23).
  4. Séparateur selon l'une des revendications précédentes, caractérisé en ce que les garnitures d'étanchéité (23) sont conformées comme des joints d'étanchéité circonférentiels.
  5. Séparateur selon la revendication 4, caractérisé en ce que les garnitures d'étanchéité (23) sont disposées dans des rainures de logement (24) correspondantes dans les disques de séparation.
  6. Séparateur selon la revendication 5, caractérisé en ce que les garnitures d'étanchéité (23) et/ou les rainures de logement (24) de la partie de paquet de disques de séparateur supérieure (7) sont alignées les unes avec les autres dans le sens vertical.
  7. Séparateur selon la revendication 5, caractérisé en ce que les garnitures d'étanchéité (23) et/ou les rainures de logement (24) de la partie de paquet de disques de séparateur supérieure (7) sont décalées l'une par rapport à l'autre dans le sens vertical.
  8. Séparateur selon l'une des revendications précédentes, caractérisé en ce que les garnitures d'étanchéité (23) présentent une section rectangulaire, ovale ou circulaire.
  9. Séparateur selon l'une des revendications précédentes, caractérisé en ce que l'étanchéité est obtenue dans le sens radial vers l'intérieur par un appui direct des disques de séparation les uns sur les autres.
  10. Séparateur selon la revendication 9, caractérisé en ce qu'afin d'obtenir l'étanchéité dans le sens radial vers l'intérieur, des disques de séparation (3b) voisins dans le sens vertical reposent directement les uns sur les autres dans une zone en pente conique (32) dans laquelle l'angle de conicité β est plus petit que l'angle de conicité α dans une partie de disques de séparation conique (31) située en dehors de la zone en pente conique (32).
  11. Séparateur selon l'une des revendications précédentes, caractérisé en ce que les disques de séparation (3b) sont plus espacés verticalement dans la partie de paquet de disques de séparation supérieure (7) conçue comme un dispositif de clarification que les disques de séparation (3a) dans la partie de paquet de disques de séparateur inférieure (6) conçue comme un dispositif de séparation.
  12. Séparateur selon l'une des revendications précédentes, caractérisé en ce que le paquet de disques de séparateur (2) est partagé par un disque de séparation (3b) ayant un plus grand diamètre que les autres disques de séparation (3a, 3c) entre la partie de paquet de disques de séparateur inférieure (6) et la partie de paquet de disques de séparateur supérieure (7).
  13. Séparateur selon l'une des revendications précédentes, caractérisé en ce que dans la partie de paquet de disques de séparateur inférieure (6), une phase liquide plus légère (L1) est évacuée dans le sens radial vers l'intérieur et en ce que l'autre phase liquide plus lourde (L2) est amenée dans un canal montant (14) qui traverse tout le paquet de disques dans le sens axial.
  14. Séparateur selon l'une des revendications précédentes, caractérisé en ce qu'il comporte des ouvertures d'évacuation de solides (18) qui peuvent être fermées de façon intermittente.
EP10716333.9A 2009-04-29 2010-04-27 Séparateur centrifuge Active EP2424675B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019392A DE102009019392A1 (de) 2009-04-29 2009-04-29 Separator
PCT/EP2010/055601 WO2010125049A1 (fr) 2009-04-29 2010-04-27 Séparateur centrifuge

Publications (2)

Publication Number Publication Date
EP2424675A1 EP2424675A1 (fr) 2012-03-07
EP2424675B1 true EP2424675B1 (fr) 2020-07-15

Family

ID=42542894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10716333.9A Active EP2424675B1 (fr) 2009-04-29 2010-04-27 Séparateur centrifuge

Country Status (3)

Country Link
EP (1) EP2424675B1 (fr)
DE (1) DE102009019392A1 (fr)
WO (1) WO2010125049A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE532153C2 (sv) * 2008-04-08 2009-11-03 Alfa Laval Corp Ab Separeringsskiva och separator
EP2664385B1 (fr) 2012-05-14 2017-03-01 Alfa Laval Corporate AB Pile de disques pour un séparateur centrifuge
DE202016101272U1 (de) 2016-03-08 2017-06-09 Gea Mechanical Equipment Gmbh Separator
US20210362166A1 (en) * 2017-12-19 2021-11-25 Tetra Laval Holdings & Finance S.A. Separating milk
WO2021018540A1 (fr) * 2019-07-26 2021-02-04 Tetra Laval Holdings & Finance S.A. Séparateur centrifuge

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US993791A (en) * 1905-08-19 1911-05-30 Gustaf Oscar Wallenberg Liner for centrifugal liquid-separators.
US933791A (en) * 1909-05-03 1909-09-14 Samuel Sinkler Physician's hypodermic-syringe case.
GB206723A (en) 1922-12-06 1923-11-15 Johannes Valdemar Marten Risbe Improvements in or relating to centrifugal cream separators
US2487364A (en) 1943-04-22 1949-11-08 Superior Ab Automatically opening separator bowl
US2725190A (en) * 1954-04-19 1955-11-29 Int Harvester Co Cream separator disk assembly
DK114256B (da) 1960-04-22 1969-06-09 Separator Ab Centrifuge.
SE8803686D0 (sv) * 1988-10-17 1988-10-17 Alfa-Laval Separation Ab Centrifugalseparator
DD288322A5 (de) * 1989-10-06 1991-03-28 Veb Kyffhaeuser Artern Betrieb Des Veb Kombinat Nagema,De Zentrifugalseparator zum klaeren und trennen von fluessigkeiten mit hohem feststoffanteil
DE19508334C2 (de) * 1995-03-09 1999-07-01 Westfalia Separator Ag Verfahren und Zentrifuge zur Gewinnung von Essenzöl aus Zitrusfrüchten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2424675A1 (fr) 2012-03-07
WO2010125049A1 (fr) 2010-11-04
DE102009019392A1 (de) 2010-11-11

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