EP2958678B1 - Separator disc package - Google Patents

Separator disc package 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
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EP14704591.8A
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German (de)
French (fr)
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EP2958678A2 (en
Inventor
Kathrin Quiter
Julian KÖNIG
Thomas Bathelt
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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Publication of EP2958678A2 publication Critical patent/EP2958678A2/en
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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)

Description

Die Erfindung betrifft ein Trenntellerpaket nach dem Oberbegriff des Anspruchs 1.The invention relates to a separator plate package according to the preamble of claim 1.

Die US 3,133,880 A offenbart ein Trenntellerpaket in einem Separator. Dabei bilden jeweils zwei Trennteller einen Strömungskanal mit einer Mäanderform entlang einer Schnittebene auf welcher die Drehachse des Separators angeordnet ist.The US 3,133,880 A discloses a separator disc pack in a separator. In each case, 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.

Eine Zentrifuge mit einem Trenntellerpaket wird beispielsweise in der DE 10 2008 051 867 A1 offenbart. Separatorenteller werden gängigerweise aus Metall gefertigt. Üblicherweise werden dabei auf dem Trennteller Laschen in Form von Stegen oder Punkten ausgebildet, welche einerseits die Beabstandung der Teller in axialer Richtung sicherstellen und welche andererseits Strömungswege definieren. Zum technologischen Hintergrund seien ferner die DE 610 987 PS, die DE 195 37 268 C1 , die US 3 133 880 A die US 3,335,946 und die DE 17 69 636 genannt, welche jeweils Trennteller mit unterschiedlichsten Laschenanordnungen offenbaren. Ein Ziel der Entwicklung ist es, die Trennteller eines Tellerpaketes eines Separators oder einer sonstigen Zentrifuge derart auszulegen, dass bei der Klärung eines Produktes von Feststoffen eine möglichst gute Klärwirkung erzielt wird.A centrifuge with a Trenntellerpaket 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.

Das Erreichen dieses Zieles ist die Aufgabe der Erfindung.Achieving this goal is the object of the invention.

Die Erfindung löst diese Aufgabe durch den Gegenstand des Anspruchs 1. Sie schafft ferner eine Separatortrommel mit einem Trenntellerpaket nach Anspruch 14.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.

Durch die Trennteller mit einem labyrinthartigen Kanalverlauf mit wenigstens zwei- oder mehrfacher Umlenkung des Produktes an stegartigen Laschen um jeweils mehr als 120°, vorzugsweise um mehr als 150°, besonders bevorzugt um jeweils im Wesentlichen 180°, wird eine geführte Strömung erreicht, welche eine bessere Ausnutzung der Klärfläche der Trennteller ermöglicht.Through the separating plates with a labyrinthine channel course with at least two or more diversion of the product to web-like tabs by more than 120 °, preferably more than 150 °, particularly preferably in each case substantially 180 °, a guided flow is achieved, which is a better utilization of the clarification surface of the separation plate allows.

Es ist konstruktiv besonders einfach, wenn der oder die Strömungskanäle durch Erhebungen in Form von ein- oder angeformten oder angesetzten Laschen, als stegartige Laschen der Trennteller begrenzt sind.It is structurally particularly simple when the flow channels or channels are limited by elevations in the form of one or molded or attached tabs, as web-like tabs of the separation plate.

Sodann ist es vorteilhaft, wenn vorzugsweise jeder Trennteller durch erste Laschen in Umfangsrichtung in mehrere umfangsverteilte Winkelsegmente unterteilt ist, so dass im Betrieb der Zentrifuge bei rotierender Trommel in Umfangsrichtung keine oder nur wenig Flüssigkeit von Tellersegment zu Tellersegment fließen kann.Then it is advantageous if 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.

Die stegartigen Laschen der Trennteller sind erfindungsgemäß derartig auf dem Trennteller, insbesondere innerhalb der Winkelsegmente verteilt, dass ein zu verarbeitendes Produkt zunächst radial von außen nach innen, dann radial von innen nach außen (erste Umlenkung um quasi bzw. im Wesentlichen 180°) und dann wieder radial von außen nach innen geleitet wird (zweite Umlenkung um im Wesentlichen bzw. quasi 180°). Derart wird eine besonders gute Ausnutzung der Klärfläche erreicht, da ein Produkt relativ lange im Tellerspalt verbleibt, bevor es als geklärte Phase zum Zentrum abgeleitet wird. Derart wird ein sehr vorteilhaftes Strömungsverhalten in einem auch als Z-förmig oder S-förmig zu bezeichnenden Strömungskanal erreicht.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 °). In this way, 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. In this way, a very advantageous flow behavior is achieved in a flow channel which can also be designated as a Z-shaped or S-shaped.

Dabei ist es wiederum besonders vorteilhaft in Hinsicht auf das Abscheideverhalten, wenn der oder die Strömungskanäle derart ausgestaltet sind, dass jedenfalls ein Teil eines im äußeren radialen Drittel in wenigstens einem Steigekanal des Trenntellerpakets in Spalte zwischen den Trenntellern eintretenden Produkts zunächst radial nach innen fließt, dann radial nach außen umgelenkt wird und dann wieder radial nach innen umgelenkt wird, wo es am radialen Innenrand des Trenntellerpakets aus diesem austritt. Durch den Eintritt radial ganz außen und den austritt radial ganz innen wird der Weg des Teiles des Produktes, dass entlang dieses gesamten Weges fließt, besonders vorteilhaft sehr lang.It is again particularly advantageous in terms of the separation behavior, when 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 Trenntellerpakets 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.

Gerade ein Umlenken eines zunächst radial nach innen fließenden Produktanteils wieder nach außen findet z.B. in der DE 610 987 PS oder in der US 3,133,880 nicht statt.Just a redirecting a first radially inward flowing product portion back outwards finds eg in the DE 610 987 PS or in the US 3,133,880 not happening.

Nach einer Variante und auch unabhängig zu betrachtenden weiteren Erfindung ist zwischen zwei sich radial oder im Wesentlichen radial erstreckenden Laschen, insbesondere zwischen der zweiten Lasche eines Tellersegmentes und der ersten Lasche des in Umfangsrichtung nächsten Tellersegments in Umfangsrichtung eine weitere (vorzugsweise vierte) Lasche vorgesehen ist, die eine geringere radiale Höhe aufweist jedenfalls als die auch als Abstandshalter dienenden Laschen, so dass zwischen der vertikalen Oberseite dieser weiteren Lasche und der Unterseite des axial nächsten oberen Tellers eine Querschnittsverringerung bzw. ein Spalt im Strömungskanal gebildet ist, durch den Produkt (insbesondere Feststoffteilchen) nach außen aus dem Tellerpaket strömen kann.According to a variant and also to be considered independently further invention is between two radially or substantially radially extending tabs, in particular between the second tab of a tray segment and the first tab of the next circumferential plate in the circumferential direction 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.

Nachfolgend wird die Erfindung unter Bezug auf die Zeichnung anhand mehrerer Ausführungsbeispiele näher beschrieben. Es zeigen:

Fig. 1
eine perspektivische Ansicht eines schematisch dargestellten Trenntellers;
Fig. 2
eine Prinzipskizze eines Düsenseparators, der sich für einen Einsatz der Trennteller aus Fig. 1 eignet;
Fig.3
eine Draufsicht auf ein Segment eines zweiten Trenntellers;
Fig.4
einen Draufsicht auf ein Segment eines dritten Trenntellers;
Fig. 5a
eine perspektivische Ansicht eines vierten Trenntellers; und
Fig. 5b
eine Ansicht eines Randabschnittes des vierten Trenntellers aus Fig. 5a in Richtung des Pfeiles F in gegenüber Fig. 5a vergrößerter Darstellung.
The invention will be described in more detail with reference to the drawing with reference to several embodiments. Show it:
Fig. 1
a perspective view of a schematically illustrated separating plate;
Fig. 2
a schematic diagram of a jet separator, which is suitable for use of the separation plate Fig. 1 suitable;
Figure 3
a plan view of a segment of a second separation plate;
Figure 4
a plan view of a segment of a third separation plate;
Fig. 5a
a perspective view of a fourth separation plate; and
Fig. 5b
a view of an edge portion of the fourth separation plate Fig. 5a in the direction of the arrow F in opposite Fig. 5a enlarged view.

Fig. 2 zeigt eine als Separator, hier als Düsenseparator, ausgebildete Zentrifuge mit einer um eine Drehachse D rotierbaren Trommel 1, in die jeweils ein Trenntellerpaket 2 aus übereinander angeordneten bzw. gestapelten Trenntellern 3, 3' eingesetzt ist. Die Funktion derartiger Separatoren mit einem Zulauf 4, einem Feststoffraum 5 und Abläufen 6, 7 zur Feststoffentleerung und Flüssigkeitsphase(n)ableitung ist seit langem allgemein bekannt und bedarf daher keiner näheren Erläuterung. Die Drehachse D ist hier vertikal ausgerichtet und die Trommel 2 vorzugsweise doppelkonisch ausgebildet. Sie ermöglicht eine kontinuierliche Verarbeitung, insbesondere Klärung, eines zu verarbeitenden Produktes. Ergänzend kann auch eine Trennung des Produktes in zwei Flüssigkeitsphasen verschiedener Dichte erfolgen. Zur Feststoffentleerung werden vorzugsweise Düsen (Ablauf 6) oder von Kolbenschiebern verschließbare Öffnungen in der Trommel eingesetzt (nicht dargestellt). 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 Trenntellerpaket 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. For emptying of solids preferably nozzles (drain 6) or closable by piston valves openings in the drum are used (not shown).

Figur 1 zeigt eine schematische Darstellung eines Trenntellers 3 des Trenntellerpakts 2, der vorzugsweise aus einem Metallblech besteht. FIG. 1 shows a schematic representation of a separating plate 3 of Trenntellerpakts 2, which preferably consists of a metal sheet.

Die jeweils benachbarten Trennteller 3 und 3' sind voneinander axial beabstandet angeordnet, so dass zwischen ihnen jeweils ein Spalt, ein sogenannter Tellerspalt, ausgebildet ist.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.

Der Trennteller 3 weist eine konische Grundform 9 (siehe Fig. 1) auf, so dass eine Abfolge mehrerer Trennteller 3, 3' auch ein im Wesentlichen konisches Trenntellerpaket 2 ausbildet.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.

Dabei weist der Trennteller 3 einen radialen Außenrand 10 und einen radialen Innenrand 11 auf. An den Trenntellern 3 werden Feststoffe aus einer zu klärenden Flüssigkeit abgeschieden.In this case, 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.

Auf der konischen Grundform 9 des Trenntellers 3 sind Erhebungen durch Laschen 12, 13, 14 ausgebildet, die vorzugsweise durch einen Prägevorgang ausgebildet werden können aber auch durch ein Aufsetzen von entsprechenden Stegen auf die Teller. In den Fig. 1, 3, 4 und 5a sind die Laschen zwar gestrichelt schnittartig dargestellt, dies dient jedoch der leichteren Erkennbarkeit zum Erkennen der Laschen, die durch Einprägen, Aufschweißen oder dgl. hergestellt sein können und axial vom Teller vorstehen.On the conical basic shape 9 of the separating plate 3 elevations are formed by tabs 12, 13, 14, which can be preferably formed by a stamping process but also by placing appropriate webs on the plate. In the Fig. 1, 3rd . 4 and 5a Although 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.

Diese Laschen 12, 13, 14 dienen als Abstandshalter und beeinflussen die Strömung. An der Unterseite der Trennteller sind vorzugsweise keine Laschen vorgesehen. Die Trennteller 3 sind dort glatt oder weisen eine Mikrostrukturierung auf, die im Vergleich zu den vorzugsweise axial um einige Zehntel mm vorstehenden Laschen 12 bis 14 axial sehr niedrig ist.These 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.

Die Laschen 12 bis 14 bilden vorzugsweise ein Laschenmuster aus, wie es in Fig. 1 zu erkennen ist.The tabs 12 to 14 preferably form a tab pattern, as in Fig. 1 can be seen.

Zunächst ist die Oberseite der Trennteller 3, vorzugsweise jeder Trennteller 3, durch erste Laschen 12 in Umfangsrichtung in mehrere umfangsverteilte Winkelsegmente unterteilt 15a, b, c, ... unterteilt.
Die ersten Laschen 12 verlaufen radial. Sie erstrecken sich vorzugsweise über wenigstens 90 - 100 % der radialen Länge der Trennteller, vorzugsweise vom Außenrand 10 bis zum Innenrand 11 oder bis unmittelbar vor diese Ränder. In Umfangsrichtung kann vorzugsweise keine Flüssigkeit von Teller-Winkelsegment 15a zu Teller-Winkelsegment 15b usw. fließen.First, the upper side of the separating plates 3, preferably each separating plate 3, divided by first tabs 12 in the circumferential direction into a plurality of circumferentially distributed angle segments 15 a, b, c, ... divided.
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.

Im Zusammenspiel mit den weiteren Laschen 13, 14 wird ein labyrinthartiger Strömungskanal 16 ausgebildet, der für eine wenigstens einfache, vorzugsweise aber zweifache oder sogar drei- oder mehrfache Umlenkung durchströmenden Produktes um wenigstens jeweils 120°, vorzugsweise jeweils im Wesentlichen 180° sorgt.In conjunction with the further tabs 13, 14, 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 °.

Dies sei nachfolgend näher erläutert.This will be explained in more detail below.

Neben den ersten Laschen 12 ist in Umfangsrichtung sowie in Drehrichtung D der Zentrifugentrommel beabstandet bzw. versetzt je Winkelsegment 15 a,b,c,... vorzugsweise jeweils eine zweite Lasche 13 ausgebildet, die sich ebenfalls radial erstreckt, und zwar vorzugsweise direkt vom Außenrand 10 radial nach innen, vorzugsweise vom Außenrand 10 um 50% bis 80 % der radialen Erstreckung des Trenntellers 3 nach innen.In addition to the first tabs 12 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.

Sodann ist je Winkelsegment 15 a, b, c,... vorzugsweise eine dritte Lasche 14 vorhanden. Diese weist nach der Ausführung der Fig. 2 und 3 in Draufsicht auf den Trennteller 3 eine L-Form mit zwei zueinander winklig, insbesondere rechtwinklig, ausgerichteten Schenkeln 14a und 14b auf. Die dritte Lasche 14 geht vorzugsweise direkt in die erste Lasche 12 über bzw. setzt direkt an dieser an.Then, each angle segment 15 a, b, c, ... preferably a third tab 14 is present. This points after the execution of the FIGS. 2 and 3 in plan view of the separating plate 3, an L-shape with two mutually angled, in particular at right angles, aligned legs 14a and 14b. The third tab 14 preferably passes directly into the first tab 12 or sets directly to this.

Vorzugsweise erstreckt sich einer der Schenkel 14a ebenfalls radial. Dieser Schenkel 14a liegt in Drehrichtung zur zweiten Lasche 13 beabstandet zwischen der zweiten Lasche 13 und der ersten Lasche 12 des in Drehrichtung nächsten bzw. benachbarten Tellersegmentes 15b. Der Schenkel 14a erstreckt sich vorzugsweise über mehr als 50% der radialen Erstreckung des Trenntellers 3, wobei er ca. mittig zwischen dem Außenrand 10 und dem Innenrand 11 angeordnet ist. Er weist insbesondere zum Außenrand 10 einen radialen Abstand auf, der wenigstens 5 %, vorzugsweise wenigstens 10% der radialen Erstreckung des Trenntellers 3 beträgtPreferably, 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

Das radial innere Ende dieses Schenkels 14a ist über einen sich vorzugsweise in Umfangsrichtung oder senkrecht bzw. im Wesentlichen senkrecht zu dem Schenkel 14a und der ersten Lasche 12 erstreckenden Schenkel 14b mit der ersten Lasche 12 verbunden. Dieser Schenkel 14b liegt vorzugsweise in Umfangsrichtung direkt neben dem Innenrand 11.The radially inner end of 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

Derart wird vorzugsweise in jedem Tellersegment ein labyrinthartiger Strömungskanal 16 in dem Tellersegment 15a, b, c... gebildet, der sich zwischen den Laschen erstreckt und eine Flüssigkeit zweimal um quasi bzw. im Wesentlichen 180° (bzw. quasi 180°) umlenkt.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.

In einer Einströmzone 16a zwischen den Laschen 12, 13 radial von außen in den Tellerspalt einströmendes Produkt strömt zunächst radial nach innen, wird dann um das innere Ende der zweiten Lasche 13 herum umgelenkt, strömt dann in einer zweiten Zone 16b des Kanals 16 radial nach außen und wird schließlich um das äußere Ende der dritten Lasche 14 wieder radial nach innen in eine Zone 16c umgelenkt. Dabei treten vorzugsweise am radial äußeren Ende der Zone 16b Feststoffe radial nach außen aus dem Trenntellerpaket aus, so dass hier eine Strömung nach außen besteht.In a Einströmzone 16a between the tabs 12, 13 radially from the outside into the plate gap inflowing product first flows radially inward, is then deflected around the inner end of the second tab 13 around, then flows in a second zone 16b of the channel 16 radially outward and is finally redirected radially inwardly around the outer end of the third tab 14 into a zone 16c. In this case, preferably occur at the radially outer end of the zone 16b solids radially outward from the Trenntellerpaket, so that there is a flow to the outside.

Im Wesentlichen strömt sodann das geklärte Produkt zwischen der dritten Lasche 14 und der ersten Lasche 12 des in Drehrichtung nächsten Tellersegmentes 15b in der dritten Zone 16c des Kanals 16 radial nach innen über den Innenrand 11 und wird dort abgeleitet. Diese Anordnung wiederholt sich vorzugsweise in Umfangsrichtung.In essence, then 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.

Durch den labyrinthartigen Kanalverlauf mit wenigstens einer oder vorzugsweise wenigstens zweifacher Umlenkung des Produktes in Richtungen P1, P2, P3 um mehr als 120°, insbesondere mehr als 150°, vorzugsweise im Wesentlichen 180°, wird eine geführte Strömung erreicht, welche eine bessere Ausnutzung der Klärfläche ermöglicht.Through the labyrinthine channel course with at least one or preferably at least twice deflection of the product in directions P1, P2, P3 by more than 120 °, in particular more than 150 °, preferably substantially 180 °, a guided flow is achieved, which better utilization of Clarification area allows.

Fig. 3 und 4 zeigen noch, dass die Trennteller 3 nach einer Variante der bisher diskutierten Erfindung und auch als selbstständig zu betrachtende Erfindung in Umfangsrichtung verteilt abwechselnd Bereiche 17, 18 verschiedenen Außendurchmessers aufweisen können. 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.

Dargestellt ist eine Draufsicht auf eines der Winkelsegmente 15. In den Bereichen 17 etwas kleineren oder größeren Außendurchmessers (vorzugsweise ist der Außendurchmesser hier um 1 bis 10 mm größer oder kleiner als in den Bereichen 18) soll vorzugsweise der Eintritt in die erste Zone 16a des Strömungskanals 16 liegen. In den Bereichen 18 kleineren oder größeren Durchmessers soll dagegen der radiale Austritt für die Feststoffteilchen liegen. Derart wird der Weg des Produktes im Tellerspalt nochmals verlängert und die Klärwirkung optimiert.Shown is a plan view of one of the angular segments 15. In the regions 17 slightly smaller or larger outer diameter (preferably, the outer diameter is here by 1 to 10 mm larger or smaller than in the areas 18) should preferably be the entry into the first zone 16a of the flow channel 16 lie. In the areas 18 smaller or larger diameter, however, 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.

Der Trennteller 3 kann optional Öffnungen oder Ausnehmungen aufweisen, welche im Zusammenspiel im montierten Zustand mit weiteren Trenntellern 3' einen Steigekanal ausbilden (nicht dargestellt). Vorzugsweise ist es aber steigekanalfrei ausgebildet, da derart besonders vorteilhaft die Tastsache ausgenutzt werden kann, dass von außen radial in das Tellerpaket 2 einströmendes Produkt bzw. Schleudergut auf seinem Weg radial nach innen zwischen den Trenntellern jeweils mehrfach umgelenkt wird. Sind Steigekanäle vorgesehen, befinden diese sich vorzugsweise im äußeren radialen Drittel des Trenntellerpakets, damit auch derart noch ein relativ langer Weg radial nach innen von dem zu verarbeitenden fliessfähigen Schleudergut zurückgelegt wird. Im Bereich zwischen den Laschen ist die Oberfläche der konischen Trennteller vorzugsweise nicht stufig oder wellig, wie dies die US 3,133,880 zeigt sondern - abgesehen von u.U. vorhandenen mikroskopischen Strukturen an der Telleroberfläche, glattflächig.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. If 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. In the area between the tabs, 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 zeigt wie Fig. 3 eine Draufsicht auf ein einzelnes Tellersegment, an das sich in Umfangsrichtung vorzugsweise weitere gleich gestaltete Tellersegmente anschließen. 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.

Nach Fig. 4 sind die erste und die zweite Lasche 12, 13 radial nach Art der Fig. 1 ausgestaltet und ausgerichtet.To Fig. 4 are the first and second tabs 12, 13 radially in the manner of Fig. 1 designed and aligned.

Nach Fig. 4 ist die dritte Lasche 14' aber nicht L-Förmig sondern als spitzwinklig - vorzugsweise in einem Winkel zwischen 30° und 60° - zur ersten Lasche 12 ausgerichtete dritte Lasche 14' ausgebildet, die schräg vom Innenrand 11 nach außen verläuft, so dass ihr radial äußeres freies Ende radial nach außen hin (und in Umfangsrichtung) über das radial innere Ende der zweiten Lasche 13 vorsteht. Auch derart wird eine zweifache Umlenkung um 180° erreicht. Die schräge Anordnung der Lasche 14' ermöglicht ein gutes Abgleitenden der Feststoffe an dieser dritten Lasche 14' radial nach außen hin. Es wird deutlich, dass es sehr gut möglich ist, die Erfindung durch Laschenmuster verschiedener Art in die Praxis umzusetzen.To 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.

Nach Fig. 5 ist als Option vorgesehen, in Umfangsrichtung zwischen der zweiten Lasche 13 eines Tellersegments und der ersten Lasche 12 des nächsten Tellersegments - vorzugsweise unmittelbar vor dem oder am Außenrand 10 - eine vierte Lasche 19 vorzusehen. Diese vierte Lasche 19 weist - siehe Fig. 5b - allerdings eine geringere radiale Höhe auf als die übrigen auch als Abstandshalter der Teller im Tellerpaket einenden Laschen 12, 13, 14a, b. Auf diese Weise wird zwischen der Oberseite dieser vierten Lasche 19 und der Unterseite des axial nächsten oberen Tellers (in Fig. 5 durch eine gestrichelte Linie T angedeutet, eine Querschnittsverringerung bzw. ein (in der Regel nur einen oder sehr wenige zehntel mm sich axial erstreckender) Spalt 20 im Strömungskanal gebildet, durch den die Strömungsverhältnisse so positiv beeinflusst werden, dass die Feststoffe gut das Tellerpaket nach außen verlassen können, während die Hauptströmung des Produktes nach innen positiv unterstützt wird. Bezugszeichen Trommel 1 Trenntellerpaket 2 Trennteller 3, 3', Zulauf 4 Feststoffraum 5 Abläufe 6, 7 Grundform 9 äußerer Tellerrand 10 innerer Tellerrand 11 Laschen 12, 13, 14, 14' Schenkel 14a, b Winkelsegmente 15a, b, c, ... Strömungskanal 16 Zonen 16a, b, c Bereiche 17, 18 Lasche 19 Spalt 20 Pfeile F, S Richtungen Produktstrom P1, P2, P3 To 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 einenden 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. 5 indicated by a dashed line T, a cross-sectional reduction or a (usually only one or very few tenths mm axially extending) gap 20 formed in the flow channel through which the flow conditions are so positively influenced that the solids well the plate package to the outside while the mainstream of the product is positively supported internally. <B><u> reference numerals </ u></b> drum 1 Separator disc package 2 separator disc 3, 3 ', Intake 4 Solid space 5 procedures 6, 7 Basic form 9 outside of the box 10 inside the box 11 tabs 12, 13, 14, 14 ' leg 14a, b angular segments 15a, b, c, ... flow channel 16 zones 16a, b, c areas 17, 18 flap 19 gap 20 arrows F, p Directions Product stream P1, P2, P3

Claims (14)

  1. A separator disk package for a rotatable drum (1) of a centrifuge, in particular of a separator or of a sold-bowl helical conveyor centrifuge for the processing of a fluid product in continuous operation, which separator disk package comprises axially stacked conical separator disks (3, 3'), wherein, between adjacent separator disks, disk gaps are respectively formed, wherein on one or more or all of the axially adjacent separator disks (3) are configured one or more labyrinth-like flow channels (16), in which, during operation, the direction of flow of a through-flowing product, which is to be clarified of solids, changes on two or more occasions through respectively at least 120°, wherein the flow channel or flow channels (16) is/are bounded by elevations in the form of formed-in or formed-on or attached lugs (12, 13, 14) of the separator disks, and by respectively two adjacent separator disks (3, 3') and wherein the lugs (12, 13, 14) of the separator disks (3) are of web-like configuration, characterized in that the web-like lugs (12, 13, 14) of the separator disks (3) are distributed in such a way on the separator disks that a product to be processed is conducted wholly or in part initially radially from outside to in, then radially from inside to out, and then back radially from outside to in.
  2. The separator disk package as claimed in claim 1, characterized in that the flow channel or flow channels (16) is/are designed such that they twice divert the product to be processed through substantially 180° respectively.
  3. The separator disk package as claimed in one of the preceding claims 1 or 2, characterized in that the separator disks (3) have a radial outer rim (10) and a radial inner rim (11), and in that the surface of the separator disks (3) is divided by first lugs (12) in the peripheral direction into a plurality of peripherally distributed angular segments (15a, b, c, ...), so that, during operation of the centrifuge with rotating drum, preferably no liquid flows from angular segment to angular segment in the peripheral direction.
  4. The separator disk package as claimed in one of the preceding claims, characterized in that the web-like lugs (12, 13, 14) of the separator disks (3) are distributed in such a way on the separator disks within the angular segments (15), that a product to be processed is conducted wholly or in part initially radially from outside to in, then radially from inside to out, and then back radially from outside to in.
  5. The separator disk package as claimed in claim 1, characterized in that the flow channel or flow channels (16) is/are designed such that in any event a part of a product, which product enters on the outer periphery into the separator disk package (2) on the outer rim into disk gaps between the separator disks (3), initially flows radially inward, is then diverted radially outward, and then is diverted back radially inward, where it, at the radial inner rim of the separator disk package (2), is discharged from the latter.
  6. The separator disk package as claimed in one of the preceding claims, characterized in that the flow channel or flow channels (16) is/are designed such that in any event a part of a product, which product enters in the outer radial third in at least one rising channel of the separator disk package into disk gaps between the separator disks (3), initially flows radially inward, is then diverted radially outward, and then is diverted back radially inward, where it, at the radial inner rim of the separator disk package (2), is discharged from the latter.
  7. The separator disk package as claimed in one of the preceding claims, characterized in that, in addition to the first lugs (12), distanced in the peripheral direction of the centrifuge drum, there is formed a second lug (13), which extends radially, wherein the second lug (13) extends preferably over 50% to 80% of the radial width of the separator disk (3).
  8. The separator disk package as claimed in one of the preceding claims, characterized in that a third lug (14) is provided, which third lug has an L-shape comprising two legs (14a and 14b) oriented at an angle, in particular a right angle, to each other.
  9. The separator disk package as claimed in one of the preceding claims, characterized in that the third lug (14') is attached to the first lug (12) and oriented at an acute angle to the latter, so that its radially outer free end protrudes radially outward over the inner end of the second lug (13) and/or that the third lug (14) adjoins the first lug (12) or passes directly into the first lug (12).
  10. The separator disk package as claimed in one of the preceding claims, characterized in that one of the legs (14a) of the third lug (14) extends radially, so that this leg (14a) lies, distanced in the rotational direction from the second lug (13), between the second lug (13) and the first lug (12) of the, in the rotational direction, next or respectively adjacent disk segment (15b)and/or that the leg (14a) extends over more than 50% of the radial width of the separator disk (3), wherein it has a distance to the outer rim (10) which amounts to at least 5%, preferably at least 10% of the radial width or extent of the separator disk (3) and/or that, between the radially inner end of the radial leg (14a) and the first lug, the further lug (14b) is formed or arranged.
  11. The separator disk package as claimed in one of the preceding claims, characterized in that it is configured free of a rising channel.
  12. The separator disk package as claimed in one of the preceding claims or according to the preamble of claim 1, characterized in that the separator disks (3), distributed in the peripheral direction, alternately have regions (17, 18) of different outer diameter.
  13. The separator disk package as claimed in one of the preceding claims, characterized in that between two radially or substantially radially extending lugs, in particular between the second lug (13) of a disk segment and the first lug (12) of the, in the peripheral direction, next disk segment in the peripheral direction, there is provided a further (fourth) lug (19), which has a lesser radial height, in any event than the lugs (12, 13) also serving as spacers, so that, between the top side of this further lug (19) and the bottom side of the axially next upper disk, a cross-sectional reduction or a gap (20) is formed in the flow channel, through which product (in particular solids) can flow outward out of the disk package.
  14. A separator drum having a separator disk package as claimed in one of the preceding claims.
EP14704591.8A 2013-02-20 2014-02-14 Separator disc package Active EP2958678B1 (en)

Applications Claiming Priority (2)

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DE102013101654.5A DE102013101654A1 (en) 2013-02-20 2013-02-20 Separator disc package
PCT/EP2014/052954 WO2014128063A2 (en) 2013-02-20 2014-02-14 Separator disc package

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CN (1) CN105188946B (en)
DE (1) DE102013101654A1 (en)
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RU2015133371A (en) 2017-03-29
DK2958678T3 (en) 2017-07-24
RU2661587C2 (en) 2018-07-17
WO2014128063A2 (en) 2014-08-28
ES2635144T3 (en) 2017-10-02
CN105188946B (en) 2017-11-17
US9687858B2 (en) 2017-06-27
US20160001302A1 (en) 2016-01-07
EP2958678A2 (en) 2015-12-30
DE102013101654A1 (en) 2014-08-21
WO2014128063A3 (en) 2015-04-16
CN105188946A (en) 2015-12-23

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