EP2958678B1 - Ensemble de disques séparateurs - Google Patents

Ensemble de disques séparateurs Download PDF

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Publication number
EP2958678B1
EP2958678B1 EP14704591.8A EP14704591A EP2958678B1 EP 2958678 B1 EP2958678 B1 EP 2958678B1 EP 14704591 A EP14704591 A EP 14704591A EP 2958678 B1 EP2958678 B1 EP 2958678B1
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EP
European Patent Office
Prior art keywords
separator
lug
radially
disk package
disks
Prior art date
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Active
Application number
EP14704591.8A
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German (de)
English (en)
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EP2958678A2 (fr
Inventor
Kathrin Quiter
Julian KÖNIG
Thomas Bathelt
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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Publication of EP2958678A2 publication Critical patent/EP2958678A2/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
    • B04B1/04—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 separator plate package according to the preamble of claim 1.
  • the US 3,133,880 A discloses a separator disc pack in a separator.
  • two separating plates form a flow channel with a meandering shape along a cutting plane on which the axis of rotation of the separator is arranged.
  • a centrifuge with a Trenntellerver is for example in the DE 10 2008 051 867 A1 disclosed.
  • Separator plates are commonly made of metal. Usually, tabs in the form of webs or points are formed on the separating plate, which on the one hand ensure the spacing of the plates in the axial direction and which, on the other hand, define flow paths.
  • the technological background is also the DE 610 987 PS, the DE 195 37 268 C1 , the US 3,133,880 A the US 3,335,946 and the DE 17 69 636 called, which reveal each separation plate with different tab arrangements.
  • One aim of the development is to design the separating plates of a plate pack of a separator or another centrifuge such that the clarification of a product of solids achieves the best possible clarifying effect.
  • the invention solves this problem by the subject matter of claim 1. It also provides a separator drum with a separator disk package according to claim 14.
  • each separating plate is preferably divided by first tabs in the circumferential direction into a plurality of circumferentially distributed angle segments, so that during operation of the centrifuge with rotating drum in the circumferential direction no or little liquid can flow from tray to tray segment.
  • the web-like tabs of the separation plates according to the invention are distributed on the separation plate, in particular within the angular segments, that a product to be processed initially radially from outside to inside, then radially from inside to outside (first deflection by quasi or substantially 180 °) and then is again directed radially from outside to inside (second deflection by substantially or quasi 180 °).
  • a particularly good utilization of the clarification surface is achieved because a product remains in the disk gap for a relatively long time before it is discharged to the center as a clarified phase.
  • a very advantageous flow behavior is achieved in a flow channel which can also be designated as a Z-shaped or S-shaped.
  • the one or more flow channels are designed such that at least a part of a radially outer third in at least one rising channel of Trenntellervers in column between the separator plates first entering radially inward flows, then is deflected radially outwards and then redirected radially inwardly, where it exits at the radial inner edge of the separator plate package from this. Due to the entry radially outward and the outlet radially inwardly the path of the part of the product that flows along this entire path, particularly advantageously very long.
  • a further (preferably fourth) tab is provided which has a smaller radial height in any case than the tabs which also serve as spacers, so that a cross-sectional reduction or a gap in the flow channel is formed between the vertical upper side of this further tab and the underside of the axially next upper plate, by the product (in particular solid particles). can flow out of the plate package to the outside.
  • Fig. 2 shows a separator designed as a separator, here as a nozzle separator, with a rotatable about a rotation axis D drum 1, in each of which a Trenntellervers 2 of stacked or stacked Trenntellern 3, 3 'is inserted.
  • the function of such separators with an inlet 4, a solids chamber 5 and 6, 7 processes for solids discharge and liquid phase (s) discharge has long been well known and therefore needs no further explanation.
  • the axis of rotation D is vertically aligned here and the drum 2 is preferably biconical. It enables continuous processing, in particular clarification, of a product to be processed. additional It is also possible to separate the product into two liquid phases of different densities.
  • nozzles drain 6
  • closable by piston valves openings in the drum are used (not shown).
  • FIG. 1 shows a schematic representation of a separating plate 3 of Trenntellerpakts 2, which preferably consists of a metal sheet.
  • the respective adjacent separating plates 3 and 3 ' are arranged axially spaced from each other, so that between them in each case a gap, a so-called plate gap, is formed.
  • the separation plate 3 has a conical basic shape 9 (see Fig. 1 ), so that a sequence of several separation plates 3, 3 'also forms a substantially conical separator plate package 2.
  • the separation plate 3 has a radial outer edge 10 and a radial inner edge 11. At the separation plates 3 solids are separated from a liquid to be clarified.
  • tabs 12, 13, 14 which can be preferably formed by a stamping process but also by placing appropriate webs on the plate.
  • the tabs are shown in dashed lines, but this is the easier recognizability for detecting the tabs that can be made by stamping, welding or the like. And protrude axially from the plate.
  • tabs 12, 13, 14 serve as spacers and influence the flow.
  • On the underside of the separation plate preferably no tabs are provided.
  • the separation plates 3 are there smooth or have a microstructure, which is compared to the axially preferably a few tenths mm protruding tabs 12 to 14 axially very low.
  • the tabs 12 to 14 preferably form a tab pattern, as in Fig. 1 can be seen.
  • the first tabs 12 extend radially. They preferably extend over at least 90-100% of the radial length of the separation plates, preferably from the outer edge 10 to the inner edge 11 or right up to these edges. In the circumferential direction preferably no liquid from plate-angle segment 15a to plate-angle segment 15b, etc. flow.
  • a labyrinth-like flow channel 16 is formed which ensures at least a single, but preferably double or even triple or multiple deflection by at least 120 °, preferably in each case substantially 180 °.
  • each angular segment 15 a, b, c, ... is spaced circumferentially and in the direction of rotation D of the centrifuge drum or offset each angular segment 15 a, b, c, ... preferably each formed a second tab 13 which also extends radially, preferably directly from the outer edge 10 radially inwardly, preferably from the outer edge 10 by 50% to 80% of the radial extent of the separation plate 3 inwards.
  • each angle segment 15 a, b, c, ... preferably a third tab 14 is present.
  • the third tab 14 preferably passes directly into the first tab 12 or sets directly to this.
  • one of the legs 14a also extends radially.
  • This leg 14a is located in the direction of rotation to the second tab 13 spaced between the second tab 13 and the first tab 12 of the next in the direction of rotation or adjacent tray segment 15b.
  • the leg 14a preferably extends over more than 50% of the radial extent of the separation plate 3, wherein it is arranged approximately centrally between the outer edge 10 and the inner edge 11. It has in particular to the outer edge 10 at a radial distance which is at least 5%, preferably at least 10% of the radial extent of the separation plate 3
  • this leg 14a is connected to the first lug 12 via a limb 14b which preferably extends in the circumferential direction or perpendicularly or substantially perpendicularly to the limb 14a and the first lug 12.
  • This leg 14b is preferably located in the circumferential direction directly next to the inner edge eleventh
  • Such a labyrinth-like flow channel 16 in the tray segment 15a, b, c ... is preferably formed in each tray segment, which extends between the tabs and a liquid twice by quasi or substantially 180 ° (or quasi 180 °) deflects.
  • the clarified product flows between the third tab 14 and the first tab 12 of the rotationally next tray segment 15b in the third zone 16c of the channel 16 radially inwardly over the inner edge 11 and is discharged there.
  • This arrangement is preferably repeated in the circumferential direction.
  • Fig. 3 and 4 show that the separation plates 3 according to a variant of the invention discussed so far and also as independently to be considered invention in the circumferential direction distributed alternately areas 17, 18 may have different outer diameter.
  • the outer diameter is here by 1 to 10 mm larger or smaller than in the areas 18
  • the areas 18 smaller or larger diameter should be the radial outlet for the solid particles. In this way, the path of the product in the plate gap is further extended and the clarification effect optimized.
  • the separating plate 3 can optionally have openings or recesses which, in interaction with another separating plates 3 'in the assembled state, form a rising channel (not shown). Preferably, however, it is formed without a rising channel, since in such a particularly advantageous manner the fact that the product or material to be centrifuged radially from the outside into the plate package 2 is deflected several times in each case on its way radially inward between the separating plates.
  • riser channels are provided, they are preferably located in the outer radial third of the separator plate package so that a relatively long path is still traveled radially inwards from the fluid material to be processed, which is still to be processed.
  • the surface of the conical separating plate is preferably not tiered or wavy, as the US 3,133,880 shows but - apart from possibly existing microscopic structures on the plate surface, smooth surface.
  • Fig. 4 shows how Fig. 3 a plan view of a single tray segment, preferably connected in the circumferential direction more equally shaped tray segments.
  • Fig. 4 To Fig. 4 are the first and second tabs 12, 13 radially in the manner of Fig. 1 designed and aligned.
  • Fig. 4 is the third tab 14 'but not L-shaped but at an acute angle - preferably at an angle between 30 ° and 60 ° - to the first tab 12 aligned third tab 14' is formed, which extends obliquely from the inner edge 11 to the outside, so that its radially outer free end radially outwardly (and in the circumferential direction) beyond the radially inner end of the second tab 13 protrudes. Also such a double deflection is achieved by 180 °.
  • the oblique arrangement of the tab 14 ' allows a good sliding of the solids at this third tab 14' radially outward. It is clear that it is very possible to put the invention into practice by means of tab patterns of various kinds.
  • Fig. 5 is provided as an option to provide in the circumferential direction between the second tab 13 of a disk segment and the first tab 12 of the next disk segment - preferably immediately before or at the outer edge 10 - a fourth tab 19.
  • This fourth tab 19 has - see Fig. 5b - However, a smaller radial height than the rest as well as spacers of the plate in the disk package nieden tabs 12, 13, 14 a, b. In this way, between the top of this fourth tab 19 and the bottom of the axially next upper plate (in Fig.

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  • Centrifugal Separators (AREA)

Claims (14)

  1. Paquet de disques de séparation pour un tambour rotatif (1) d'une centrifugeuse, en particulier d'un séparateur ou d'une centrifugeuse à vis sans fin à bol plein pour le traitement d'un produit fluide en fonctionnement continu, qui possède des disques de séparation coniques (3, 3') empilés dans le sens axial, dans lequel des interstices entre les disques sont formés entre les disques de séparation voisins, dans lequel sont formés sur un ou plusieurs ou tous les disques de séparation (3) voisins dans le sens axial un ou plusieurs canaux d'écoulement (16) en labyrinthe dans lesquels le sens de circulation d'un produit en circulation qui doit être débarrassé de ses solides change deux fois ou plusieurs fois d'au moins 120° à chaque fois, le ou les canaux d'écoulement (16) étant délimités par des reliefs prenant la forme de pattes (12, 13, 14) formées ou moulées ou posées sur les disques de séparation et par deux disques de séparation (3,3') voisins, et dans lequel les pattes (12, 13, 14) des disques de séparation (3) ont la forme de barrettes, caractérisé en ce que les pattes (12, 13, 14) en forme de barrettes des disques de séparation (3) sont réparties sur les disques de séparation de telle façon qu'un produit à traiter soit guidé, entièrement ou en partie, d'abord de l'extérieur vers l'intérieur dans le sens radial, puis de l'intérieur vers l'extérieur dans le sens radial et à nouveau de l'extérieur vers l'intérieur dans le sens radial.
  2. Paquet de disques de séparation selon la revendication 1, caractérisé en ce que le ou les canaux d'écoulement (16) sont conformés de telle manière qu'ils dévient deux fois le produit à traiter de sensiblement 180° à chaque fois.
  3. Paquet de disques de séparation selon l'une des revendications 1 ou 2, caractérisé en ce que les disques de séparation (3) présentent un bord radial extérieur (10) et un bord radial intérieur (11) et en ce que la surface des disques de séparation (3) est divisée par des premières pattes (12) dans le sens de la circonférence en plusieurs segments angulaires (15a, b, c...) répartis sur la circonférence, de sorte que pendant le fonctionnement de la centrifugeuse, lorsque le tambour tourne, aucun liquide ne coule de préférence dans le sens de la circonférence d'un segment angulaire à un autre.
  4. Paquet de disques de séparation selon l'une des revendications précédentes, caractérisé en ce que les pattes (12, 13, 14) en forme de barrettes des disques de séparation (3) sont réparties sur les disques de séparation à l'intérieur des segments angulaires (15) de telle manière qu'un produit à traiter est guidé, entièrement ou en partie, d'abord de l'extérieur vers l'intérieur dans le sens radial, puis de l'intérieur vers l'extérieur dans le sens radial et à nouveau de l'extérieur vers l'intérieur dans le sens radial.
  5. Paquet de disques de séparation selon la revendication 1, caractérisé en ce que le ou les canaux d'écoulement (16) sont conformés de telle façon que dans tous les cas, une partie d'un produit entrant sur la circonférence extérieure dans le paquet de disques de séparation (2) sur le bord extérieur dans l'interstice entre les disques de séparation (3) s'écoule d'abord vers l'intérieur dans le sens radial, puis est déviée vers l'extérieur dans le sens radial et à nouveau déviée vers l'intérieur dans le sens radial pour sortir du paquet de disques de séparation (2) sur le bord radial intérieur de celui-ci.
  6. Paquet de disques de séparation selon l'une des revendications précédentes, caractérisé en ce que le ou les canaux d'écoulement (16) sont conformés de telle manière que dans tous les cas, une partie d'un produit entrant dans le tiers extérieur dans le sens radial dans au moins un canal de montée du paquet de disques de séparation dans l'interstice entre les disques de séparation (3) s'écoule d'abord vers l'intérieur dans le sens radial, puis est déviée vers l'extérieur dans le sens radial et à nouveau déviée vers l'intérieur dans le sens radial pour sortir du paquet de disques de séparation (2) sur le bord radial intérieur de celui-ci.
  7. Paquet de disques de séparation selon l'une des revendications précédentes, caractérisé en ce qu'outre les premières pattes (12), une deuxième patte (13) est formée à distance sur la circonférence de la centrifugeuse et s'étend dans le sens radial, la deuxième patte (13) s'étendant de préférence sur 50 % à 80 % de la largeur radiale du disque de séparation (3).
  8. Paquet de disques de séparation selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu une troisième patte (14) qui présente de préférence une forme de L avec deux bras (14a et 14b) orientés selon un angle, de préférence à angle droit.
  9. Paquet de disques de séparation selon l'une des revendications précédentes, caractérisé en ce que la troisième patte (14') s'appuie sur la première patte (12) et forme un angle aigu avec celle-ci, de sorte que son extrémité libre extérieure dans le sens radial dépasse dans le sens radial vers l'extérieur par-dessus l'extrémité intérieure de la deuxième patte (13) et/ou en ce que la troisième patte (14) est contiguë de la première patte (12) ou se raccorde directement à la première patte (12).
  10. Paquet de disques de séparation selon l'une des revendications précédentes, caractérisé en ce que l'un des bras (14a) de la troisième patte (14) s'étend dans le sens radial de telle façon que ce bras (14a), qui se trouve à distance de la deuxième patte (13) dans le sens de rotation entre la deuxième patte (13) et la première patte (12) du segment de disque (15b) le plus proche ou voisin dans le sens de la circonférence et/ou en ce que le bras (14a) s'étend sur plus de 50 % de la largeur radiale du disque de séparation (3) à une distance du bord extérieur (10) qui représente au moins 5 %, de préférence au moins 10 % de la largeur ou de l'étendue radiale du disque de séparation (3) et/ou en ce que l'autre bras (14b) est formé ou disposé entre l'extrémité intérieure dans le sens radial du bras radial (14a) et la première patte.
  11. Paquet de disques de séparation selon l'une des revendications précédentes, caractérisé en ce qu'il est conformé sans canaux de montée.
  12. Paquet de disques de séparation selon l'une des revendications précédentes ou selon le préambule de la revendication 1, caractérisé en ce que les disques de séparation (3) présentent, réparties sur la circonférence, des zones (17, 18) alternées ayant un diamètre extérieur différent.
  13. Paquet de disques de séparation selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu dans le sens de la circonférence entre deux pattes s'étendant dans le sens radial ou sensiblement dans le sens radial, en particulier entre la deuxième patte (13) d'un segment de disque et la première patte (12) du segment de disque suivant dans le sens de la circonférence une autre (quatrième) patte (19) qui a une plus petite hauteur radiale que les pattes (12, 13) qui servent aussi d'éléments d'écartement, de sorte qu'il se forme entre la face supérieure de cette autre patte (19) et la face inférieure du disque suivant vers le haut dans le sens axial une réduction de la section ou un interstice (20) dans le canal d'écoulement par lequel le produit (en particulier les solides) peut s'écouler vers l'extérieur et sortir du paquet de disques.
  14. Tambour de séparateur avec un paquet de disques de séparation selon l'une des revendications précédentes.
EP14704591.8A 2013-02-20 2014-02-14 Ensemble de disques séparateurs Active EP2958678B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013101654.5A DE102013101654A1 (de) 2013-02-20 2013-02-20 Trenntellerpaket
PCT/EP2014/052954 WO2014128063A2 (fr) 2013-02-20 2014-02-14 Ensemble de disques séparateurs

Publications (2)

Publication Number Publication Date
EP2958678A2 EP2958678A2 (fr) 2015-12-30
EP2958678B1 true EP2958678B1 (fr) 2017-04-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14704591.8A Active EP2958678B1 (fr) 2013-02-20 2014-02-14 Ensemble de disques séparateurs

Country Status (8)

Country Link
US (1) US9687858B2 (fr)
EP (1) EP2958678B1 (fr)
CN (1) CN105188946B (fr)
DE (1) DE102013101654A1 (fr)
DK (1) DK2958678T3 (fr)
ES (1) ES2635144T3 (fr)
RU (1) RU2661587C2 (fr)
WO (1) WO2014128063A2 (fr)

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EP3315204B1 (fr) * 2016-10-31 2019-05-08 Alfa Laval Corporate AB Empilement de disques de séparation
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11426739B2 (en) 2016-04-13 2022-08-30 Alfa Laval Corporate Ab Separating disc for centrifugal separator and disc package comprising such separating discs

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RU2661587C2 (ru) 2018-07-17
DK2958678T3 (en) 2017-07-24
DE102013101654A1 (de) 2014-08-21
ES2635144T3 (es) 2017-10-02
CN105188946B (zh) 2017-11-17
US9687858B2 (en) 2017-06-27
CN105188946A (zh) 2015-12-23
EP2958678A2 (fr) 2015-12-30
US20160001302A1 (en) 2016-01-07
WO2014128063A2 (fr) 2014-08-28
RU2015133371A (ru) 2017-03-29
WO2014128063A3 (fr) 2015-04-16

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