EP2239059B2 - Centrifuge drum and method for attaching centrifuge drums - Google Patents

Centrifuge drum and method for attaching centrifuge drums Download PDF

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Publication number
EP2239059B2
EP2239059B2 EP10157755.9A EP10157755A EP2239059B2 EP 2239059 B2 EP2239059 B2 EP 2239059B2 EP 10157755 A EP10157755 A EP 10157755A EP 2239059 B2 EP2239059 B2 EP 2239059B2
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EP
European Patent Office
Prior art keywords
drum
centrifuge
drum parts
parts
individual
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EP10157755.9A
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German (de)
French (fr)
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EP2239059A3 (en
EP2239059A2 (en
EP2239059B1 (en
Inventor
Bernd Terwey
Wilfried Mackel
Thomas Bathelt
Kathrin Quiter
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GEA Mechanical Equipment GmbH
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GEA Mechanical Equipment GmbH
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    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/14—Balancing rotary bowls ; Schrappers

Definitions

  • the invention relates to a method for assembling centrifuge drums according to the preamble of claim 1.
  • a centrifuge drum according to the preamble of claim 1 is, for example, from US 1 438 768 A1 known.
  • centrifugal drums for example plate separators
  • wandering residual unbalances which have an adverse effect on the operating behavior and possibly adversely affect the separation efficiency of the separator or even require repairs to the drum.
  • FIG. 3 shows an exemplary structure of a centrifuge designed as a plate separator with a motor-driven centrifuge drum 1.
  • Figure 2 also shows a section through half of the centrifuge drum 1 for such a separator (without feed pipe and without the gripper and gripper chamber cover).
  • the centrifuge drum 1 has drum parts which rotate in operation about a vertical axis of rotation D here and drum parts which are stationary during operation.
  • the drum parts rotating during operation include (which in Fig. 1 2) a drum cover 2, a drum lower part 3, a piston slide 4, a stack of plates 5, two gripper chamber covers 6, 7 offset vertically to one another, a locking ring 8 and a drive spindle 9 and a distributor 15.
  • the drum parts that are idle during operation include (see Fig. 3 ) an inlet pipe 10 and one or more grippers or peeling discs 11.
  • the centrifuge drum After the assembly of the individual drum parts, the centrifuge drum has the vertical axis of rotation D.
  • the individual drum parts rotating during operation are designed in such a way that the axes of gravity of the individual drum parts are aligned with the drum axis of rotation as far as possible in order to minimize unbalance.
  • two or more of the drum parts are manufactured and assembled in such a way that they form an unbalanced mass, that is, their mass is distributed so unbalanced to the axis of rotation that their individual, theoretical drum part gravity axes D1 and D2 lie parallel to the drum axis of rotation, but not with this.
  • drum parts are further mounted in such a way that, as a pair of drum parts, they do not together form an unbalance, i.e. in such a way that their individual unbalances cancel again after assembly.
  • Fig. 2 this is illustrated by means of two gripper chamber covers 6, 7 which are offset axially or vertically to one another.
  • the gripper chamber covers 6, 7 each limit gripper chambers for grippers (not shown here) for draining liquids from the centrifuge drum 1).
  • the gripper chamber covers do not have an annular wall 6a, 7a of constant thickness all around, which means that these two drum parts each form or have an imbalance, so that their theoretical axes of gravity D1, D2 do not align with the drum axis of rotation D.
  • This type of assembly can be simplified by optical or mechanical alignment aids such as markings (not shown), which allow the targeted assembly of the centrifuge drum according to the type of Fig. 1 simplify.
  • the effect is also used that individual drum parts are provided with a targeted unbalance.
  • the effect is achieved in a different way.
  • the drum parts are not provided with sections of ring walls of different thicknesses or thicknesses, but an unbalance is generated on individual drum parts by providing these drum parts either with recesses - in particular with blind holes 12 - or with weights (for example by means of screws 13).
  • millings 14 for example on the piston slide 4 and / or on a control part 16 assigned to it.

Description

Die Erfindung betrifft ein Verfahren zur Montage von Zentrifugentrommeln nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for assembling centrifuge drums according to the preamble of claim 1.

Eine Zentrifugentrommel gemäß dem Oberbegriff des Anspruchs 1 ist beispielsweise aus US 1 438 768 A1 bekannt.A centrifuge drum according to the preamble of claim 1 is, for example, from US 1 438 768 A1 known.

Bei kontinuierlichen Trennprozessen kann es an Zentrifugentrommeln, beispielsweise von Tellerseparatoren, zur Ausbildung von wandernden Restunwuchten kommen, die sich auf das Betriebsverhalten nachteilig auswirken und ggf. nachteilig die Trenneffizienz des Separators beeinflussen oder gar Reparaturen an der Trommel erforderlich machen.In the case of continuous separation processes, it is possible for centrifugal drums, for example plate separators, to form wandering residual unbalances, which have an adverse effect on the operating behavior and possibly adversely affect the separation efficiency of the separator or even require repairs to the drum.

Es ist daher die Aufgabe der Erfindung, ein Verfahren zum Montieren der Zentrifugentrommel zu schaffen, welche das Problem der Ausbildung von wandernden Restunwuchten verringern.It is therefore the object of the invention to provide a method for assembling the centrifuge drum which reduces the problem of the formation of wandering residual unbalances.

Die Erfindung löst diese Aufgabe durch die Merkmale des Anspruchs 1.The invention solves this problem by the features of claim 1.

Durch das gezielte unwuchtige Auslegen und ggf. Montieren einzelner Trommelteile derart, dass sich die Einzelunwuchten dieser Trommelteile im Betrieb wieder aufheben, wird auf einfache Weise verhindert, dass sich im Betrieb wandernde Restunwuchten an der Trommel ausbilden.By deliberately unbalancing and possibly assembling individual drum parts in such a way that the individual unbalances of these drum parts cancel each other out during operation, it is prevented in a simple manner that residual imbalances which migrate during operation are formed on the drum.

Verschieden Varianten der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. Sie zeigen:

Figur 1
eine Schnittansicht eines Teilbereiches einer Zentrifugentrommel;
Figur 1
einen Schnitt durch eine Zentrifugentrommel (ohne einer Darstellung stillstehender Trommelteile); und
Figur 3
einen Querschnitt einer schematisch dargestellten bekannten Zentrifugentrommel
Various variants of the invention are explained in more detail below with reference to the drawing. They show:
Figure 1
a sectional view of a portion of a centrifuge drum;
Figure 1
a section through a centrifuge drum (without a representation of stationary drum parts); and
Figure 3
a cross section of a schematically shown known centrifuge drum

Figur 3 zeigt einen beispielhaften Aufbau einer als Tellerseparator ausgebildeten Zentrifuge mit einer motorisch drehbaren Zentrifugentrommel 1. Figure 3 shows an exemplary structure of a centrifuge designed as a plate separator with a motor-driven centrifuge drum 1.

Figur 2 zeigt ferner einen Schnitt durch eine Hälfte der Zentrifugentrommel 1 für einen derartigen Separator (ohne Zulaufrohr sowie ohne den Greifer und Greiferkammerdeckel). Figure 2 also shows a section through half of the centrifuge drum 1 for such a separator (without feed pipe and without the gripper and gripper chamber cover).

Die Zentrifugentrommel 1 weist Trommelteile auf, die im Betrieb um eine hier vertikale Drehachse D rotieren sowie im Betrieb stillstehende Trommelteile.The centrifuge drum 1 has drum parts which rotate in operation about a vertical axis of rotation D here and drum parts which are stationary during operation.

Zu den im Betrieb rotierenden Trommelteilen gehören (die in Fig. 1 bzw. 2 abgebildeten) ein Trommeldeckel 2, ein Trommelunterteil 3, ein Kolbenschieber 4, ein Tellerstapel 5, zwei vertikal zueinander versetzte Greiferkammerdeckel 6, 7, ein Verschlußring 8 sowie eine Antriebsspindel 9 und ein Verteiler 15.The drum parts rotating during operation include (which in Fig. 1 2) a drum cover 2, a drum lower part 3, a piston slide 4, a stack of plates 5, two gripper chamber covers 6, 7 offset vertically to one another, a locking ring 8 and a drive spindle 9 and a distributor 15.

Zu den im Betrieb stillstehenden Trommelteilen gehören (siehe Fig. 3) ein Zulaufrohr 10 sowie einer oder mehrere Greifer bzw. Schälscheiben 11.The drum parts that are idle during operation include (see Fig. 3 ) an inlet pipe 10 and one or more grippers or peeling discs 11.

Die vorstehenden Aufzählungen drehender oder stillstehender Trommelteile sind nicht als abschließend oder zwingend zu betrachten.The above lists of rotating or stationary drum parts are not to be regarded as conclusive or mandatory.

Nach der Montage der einzelnen Trommelteile weist die Zentrifugentrommel die vertikale Drehachse D auf.After the assembly of the individual drum parts, the centrifuge drum has the vertical axis of rotation D.

An sich werden die einzelnen sich im Betrieb drehenden Trommelteile derart ausgebildet, dass die Schwereachsen der einzelnen Trommelteile mit der Trommeldrehachse möglichst fluchten, um Unwuchten zu minimieren.The individual drum parts rotating during operation are designed in such a way that the axes of gravity of the individual drum parts are aligned with the drum axis of rotation as far as possible in order to minimize unbalance.

Nach einer Variante der Erfindung werden dagegen zwei oder mehr der Trommelteile derart gefertigt und montiert, dass sie eine Unwuchtmasse ausbilden, d.h., ihre Masse ist derart unwuchtig zur Drehachse verteilt, dass ihre einzelnen, theoretischen Trommelteil-Schwereachsen D1 und D2 parallel zur Trommeldrehachse liegen, nicht aber mit dieser fluchten.According to a variant of the invention, on the other hand, two or more of the drum parts are manufactured and assembled in such a way that they form an unbalanced mass, that is, their mass is distributed so unbalanced to the axis of rotation that their individual, theoretical drum part gravity axes D1 and D2 lie parallel to the drum axis of rotation, but not with this.

Diese beiden Trommelteile werden ferner derart montiert, dass sie als Trommelteilpaar gemeinsam keine Unwucht bilden, d.h. derart, dass sich ihre Einzelunwuchten nach der Montage wieder aufheben.These two drum parts are further mounted in such a way that, as a pair of drum parts, they do not together form an unbalance, i.e. in such a way that their individual unbalances cancel again after assembly.

Dies kann beispielsweise bei zwei Trommelteilen dadurch erreicht werden, dass ihre nicht mit der Trommeldrehachse fluchtenden theoretischen Schwereachsen D1, D2 (siehe Fig. 1) nach dem Zusammenbau an voneinander abgewandten bzw. entgegen gesetzten Seiten der eigentlichen Trommeldrehachse D liegen, so dass sich ihre Einzelunwuchten in der Summe aufheben.This can be achieved, for example, in the case of two drum parts in that their theoretical gravity axes D1, D2, which are not aligned with the drum axis of rotation (see Fig. 1 ) after assembly on opposite or opposite sides of the actual drum axis of rotation D, so that their individual unbalances cancel each other out.

In Fig. 2 ist dies anhand von zwei axial bzw. vertikal zueinander versetzten Greiferkammerdeckeln 6, 7 dargestellt. Die Greiferkammerdeckel 6, 7 begrenzen jeweils Greiferkammern für hier nicht dargestellte Greifer zur Ableitung von Flüssigkeiten aus der Zentrifugentrommel 1).In Fig. 2 this is illustrated by means of two gripper chamber covers 6, 7 which are offset axially or vertically to one another. The gripper chamber covers 6, 7 each limit gripper chambers for grippers (not shown here) for draining liquids from the centrifuge drum 1).

Wie in Fig. 1 angedeutet, weisen die Greiferkammerdeckel nicht eine umlaufend gleichbleibend dicke Ringwand 6a, 7a auf, was dazu führt, dass diese beiden Trommelteile jeweils eine Unwucht ausbilden bzw. aufweisen, so dass ihre theoretischen Schwereachsen D1, D2 nicht mit der Trommeldrehachse D fluchten.As in Fig. 1 As indicated, the gripper chamber covers do not have an annular wall 6a, 7a of constant thickness all around, which means that these two drum parts each form or have an imbalance, so that their theoretical axes of gravity D1, D2 do not align with the drum axis of rotation D.

Die beiden Trommelteile sind aber andererseits derart montiert, dass sich ihre Einzelunwuchten in der Summe aufheben, was die Darstellung der Fig. 1 unmittelbar veranschaulicht.On the other hand, the two drum parts are mounted in such a way that their individual imbalances add up cancel what the representation of the Fig. 1 immediately illustrated.

Vereinfacht werden kann diese Art der Montage durch optische oder mechanische Ausrichthilfen wie Markierungen (nicht dargestellt), welche das gezielte Zusammenbauen der Zentrifugentrommel nach Art der Fig. 1 vereinfachen.This type of assembly can be simplified by optical or mechanical alignment aids such as markings (not shown), which allow the targeted assembly of the centrifuge drum according to the type of Fig. 1 simplify.

Nach einer anderen Variante der Erfindung wird auch der Effekt genutzt, dass einzelne der Trommelteile mit einer gezielten Unwucht versehen werden. Der Effekt wird aber auf andere Weise erreicht.According to another variant of the invention, the effect is also used that individual drum parts are provided with a targeted unbalance. The effect is achieved in a different way.

Wie aus Fig. 2 ersichtlich, werden dazu die Trommelteile nicht abschnittsweise mit verschieden starken bzw. dicken Ringwänden versehen sondern an einzelnen Trommelteilen wird dadurch eine Unwucht erzeugt, dass diese Trommelteile entweder mit Aussparungen - insbesondere mit Sacklochbohrungen 12 - oder mit Gewichten versehen werden (z.B. mittels Schrauben 13)How from Fig. 2 As can be seen, the drum parts are not provided with sections of ring walls of different thicknesses or thicknesses, but an unbalance is generated on individual drum parts by providing these drum parts either with recesses - in particular with blind holes 12 - or with weights (for example by means of screws 13).

Auch hier heben sich die Einzelunwuchten möglichst paarweise wieder auf. So ist beispielsweise an nach Fig. 2 eine Sacklochbohrung 12 im Trommeldeckel 2 (und/oder im Trommelunterteil 3) ausgebildet. Diese Unwucht kann durch ein Ausgleichsgewicht - die Schraube 13 - an einem anderen Teil, hier am Verschlußring 8, aufgehoben werden.Here, too, the individual imbalances cancel each other out in pairs. For example, on is after Fig. 2 a blind hole 12 is formed in the drum cover 2 (and / or in the lower drum part 3). This imbalance can be canceled by a balance weight - the screw 13 - on another part, here on the locking ring 8.

Es ist alternativ aber auch denkbar, Ausfräsungen 14 z.B. am Kolbenschieber 4 und/oder an einem diesem zugeordneten Steuerteil 16 vorzunehmen. Bezugszeichen Zentrifugentrommel 1 Trommeldeckel 2 Trommelunterteil 3 Kolbenschieber 4, Tellerstapel 5 Greiferkammerdeckel 6,7 Ringwand 6a, 7a Verschlußring 8 Antriebsspindel 9 Zulaufrohr 10 Schälscheibe 11 Sacklochbohrungen 12 Schrauben 13 Ausfräsungen 14 Verteiler 15 Steuerteil 16 Drehachse D Trommelteil-Drehachsen D1 und D2 Alternatively, however, it is also conceivable to carry out millings 14, for example on the piston slide 4 and / or on a control part 16 assigned to it. <B> reference numerals </ b> centrifuge drum 1 drum lid 2 Drum base 3 spool 4, A stack of plates 5 Gripper chamber cover 6.7 ring wall 6a, 7a locking ring 8th drive spindle 9 supply pipe 10 peeling disc 11 Blind holes 12 screw 13 millings 14 distributor 15 control part 16 axis of rotation D Barrel portion pivots D1 and D2

Claims (3)

  1. A method for mounting a rotatable centrifugal drum (1), having a plurality of drum parts which rotate in the operation of the centrifuge drum and which in the assembled state form a common rotational axis (D), characterized in that two or more drum parts are produced and mounted in such a way that they each individually form an imbalance relative to the common rotational axis (D), and that their individual imbalances cancel each other out again after mounting.
  2. A method according to claim 1, characterized in that the individual imbalances are already formed during the production of the drum parts thereon by reducing or increasing the wall thickness of said drum parts in sections.
  3. A method according to claim 1, characterized in that an imbalance is produced in individual drum parts in such a way that said drum parts are either provided with recesses, especially with blind holes (12) or milled recesses (14), or with weights, e.g. by means of screws (13).
EP10157755.9A 2009-04-08 2010-03-25 Centrifuge drum and method for attaching centrifuge drums Active EP2239059B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009016882A DE102009016882A1 (en) 2009-04-08 2009-04-08 Centrifuge drum and method for assembling centrifuge drums

Publications (4)

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EP2239059A2 EP2239059A2 (en) 2010-10-13
EP2239059A3 EP2239059A3 (en) 2016-08-17
EP2239059B1 EP2239059B1 (en) 2017-05-31
EP2239059B2 true EP2239059B2 (en) 2020-02-19

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110170387A (en) * 2019-06-05 2019-08-27 南京中船绿洲机器有限公司 A kind of disc type separator rotary drum from shock absorbing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5364335A (en) † 1993-12-07 1994-11-15 Dorr-Oliver Incorporated Disc-decanter centrifuge
US20060135339A1 (en) † 2002-06-19 2006-06-22 Martin Sandgren Rotation body arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1438768A (en) * 1921-04-29 1922-12-12 Ralph E Lapham Balancing means for centrifugal machines
US2461773A (en) * 1945-06-11 1949-02-15 Thomas H Reid Balancing centrifugal machine
CH348652A (en) * 1957-07-05 1960-08-31 Short Brothers & Harland Ltd Rotating device with dynamic self-balancing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5364335A (en) † 1993-12-07 1994-11-15 Dorr-Oliver Incorporated Disc-decanter centrifuge
US20060135339A1 (en) † 2002-06-19 2006-06-22 Martin Sandgren Rotation body arrangement

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Publication number Publication date
EP2239059A3 (en) 2016-08-17
EP2239059A2 (en) 2010-10-13
DE102009016882A1 (en) 2010-10-14
EP2239059B1 (en) 2017-05-31

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