EP0027476A1 - Centrifuge - Google Patents

Centrifuge Download PDF

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Publication number
EP0027476A1
EP0027476A1 EP79104067A EP79104067A EP0027476A1 EP 0027476 A1 EP0027476 A1 EP 0027476A1 EP 79104067 A EP79104067 A EP 79104067A EP 79104067 A EP79104067 A EP 79104067A EP 0027476 A1 EP0027476 A1 EP 0027476A1
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EP
European Patent Office
Prior art keywords
drum
centrifuge
halves
interior
centrifuge according
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Application number
EP79104067A
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German (de)
French (fr)
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EP0027476B1 (en
Inventor
Otto Wimmer
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Individual
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Individual
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Priority to AT79104067T priority Critical patent/ATE5515T1/en
Priority to EP79104067A priority patent/EP0027476B1/en
Publication of EP0027476A1 publication Critical patent/EP0027476A1/en
Application granted granted Critical
Publication of EP0027476B1 publication Critical patent/EP0027476B1/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
    • B04B1/02—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles without inserted separating walls

Definitions

  • the invention relates to a centrifuge, in particular a tubular cone centrifuge, for clarifying liquids and for thickening sludge, the centrifuge drum of which consists of two drum halves and an axially displaceable tube connecting the drum halves, with the centrifugal material being fed axially.
  • the invention has for its object to improve the centrifuge of the type mentioned in such a way that an increase in the solids concentration can be achieved.
  • This design makes it possible to reduce the size of the drum interior while the centrifuge is running, preferably towards the end of the treatment period, and thus to compress the centrifuged material, so that clear liquid or with a very low solids concentration inside into the surface or supply is delivered, which can then be discharged in the usual way. This increases the solids concentration in accordance with the volume reduction.
  • the tube cone centrifuge of Figure 1 consists of two axially separated drum halves 11, 12 which are rotatable with the displacement body 20. Both drum halves are connected by a tube 13, which is closed at one end and is axially displaceable by a double-acting hydraulic cylinder 18. By axially shifting this tube 1 3, the dry centrifugal material in the drum can be thrown off.
  • One drum half 12 is axially displaceable by a hydraulic cylinder 19 from its initial position, which it assumes when the centrifuge drum is filled, against the other, fixed drum half 12, so that the drum interior can be reduced in size.
  • the centrifuged material is fed to one end of the drum interior via a channel 15. After introduction into the interior of the drum, the centrifugal material is subjected to the centrifugal force, so that the solids are deposited radially on the outside and the liquid phase or K lar phase can be discharged via an outlet 16.
  • a filter can be arranged on a displacement body 20 arranged in the interior of the drum, through which the clear phase reaches the outlet 16.
  • the axial displacement of the drum half 12 makes it possible to compress the centrifugal material located radially on the outside, so that it releases clear liquid radially inwards and thereby the solids concentration of the centrifuge located in the interior of the drum guts is increased.
  • the displaceable drum half 12 is expediently designed in such a way that it closes the inlet opening via the displacement body 20 into the centrifuge drum during the adjustment in order to reduce the size of the drum interior, so that in the final phase of operation no centrifugal material gets into the drum.
  • a sieve or filter is expediently arranged on the displacement body 20, at least in the area of the outlet, which, in addition to the filter effect, also has the purpose, after a certain operating time, of causing an increase in pressure in the inlet which can be used for control purposes of the centrifuge.
  • FIG. 2 shows the application of the principle of reducing the drum interior to a double-cone centrifuge or a separator.
  • the centrifuge in turn has two drum halves 11, 12, with a vertical axis, the drum half 12 being displaceable in the usual way with respect to the drum half 11 to open the centrifuge.
  • the drum half 12 has a cylindrical projection 21, in which a piston 22 is slidably arranged to reduce the interior of the drum.

Abstract

1. A centrifuge, particularly a conical tube centrifuge, for clarifying liquids and thickening sludges, having a centrifuge drum which comprises two radial walls (11, 12) and an axially movable tube connected to the radial walls (11, 12) and forming the peripheral wall of the drum interior, with axial entry of the material to be centrifuged into the interior of the drum, characterized in that at least a part of one radial wall (12), opposite the other, is axially movable to reduce the interior of the drum during operation of the centrifuge.

Description

Die Erfindung betrifft eine Zentrifuge, insbesondere Rohrkegelzentrifuge, zum Klären von Flüssigkeiten und zum Eindicken von Schlamm, deren Zentrifugentrommel aus zwei Trommelhälften und einem die Trommelhälften verbindenden, axial verschiebbaren Rohr besteht, mit axialer Zuführung des Schleudergutes.The invention relates to a centrifuge, in particular a tubular cone centrifuge, for clarifying liquids and for thickening sludge, the centrifuge drum of which consists of two drum halves and an axially displaceable tube connecting the drum halves, with the centrifugal material being fed axially.

Obwohl sich bei Rohrkegelzentrifugen gegenüber normalen Zentrifugen eine gute Feststoffkonzentration erreichen läßt, ist diese immer noch deutlich geringer als zum Beispiel bei Filterpressen. Dies ist darauf zurückzuführen, daß in Zentrifugen erfahrungsgemäß das Schleudergut nur begrenzt eingedickt werden kann und der Feststoff radial zur Mitte dünnflüssiger wird.Although a good solid concentration can be achieved with tube cone centrifuges compared to normal centrifuges, this is still significantly lower than, for example, with filter presses. This is due to the fact that centrifuges have shown that the centrifuged material can only be thickened to a limited extent and that the solid becomes thinner radially towards the center.

Außerdem setzt nach Füllung der Zentrifuge nach einer bestimmten Laufzeit Eintrübung ein und es erfolgt keine Feststoffabtrennung mehr.In addition, after the centrifuge has been filled, cloudiness sets in after a certain runtime and there is no longer any separation of solids.

Der Erfindung liegt die Aufgabe zugrunde, die Zentrifuge der eingangs genannten Gattung derart zu verbessern, daß eine Erhöhung der Feststoffkonzentration erreicht werden kann.The invention has for its object to improve the centrifuge of the type mentioned in such a way that an increase in the solids concentration can be achieved.

Gelöst wird diese Aufgabe gemäß der Erfindung, daß wenigstens ein Teil wenigstens einer der Trommelhälften gegenüber der anderen zur Verkleinerung des Trommelinnenraumes während des Laufes der Zentrifuge axial verschiebbar ist.This object is achieved according to the invention in that at least a part of at least one of the drum halves is axially displaceable relative to the other in order to reduce the interior space of the drum while the centrifuge is running.

Durch diese Ausbildung ist es möglich, während des Laufes der Zentrifuge, vorzugsweise gegen Ende der Behandlungsdauer, den Trommelinnenraum zu verkleinern und damit das Schleudergut zusammenzupressen, so daß klare Flüssigkeit bzw. mit sehr geringer Feststoffkonzentration nach innen in den Uber-oder Zulauf abgegeben wird, die dann in üblicher Weise abgeführt werden kann. Dadurch wird die Feststoffkonzentration entsprechend der Volumenverkleinerung größer.This design makes it possible to reduce the size of the drum interior while the centrifuge is running, preferably towards the end of the treatment period, and thus to compress the centrifuged material, so that clear liquid or with a very low solids concentration inside into the surface or supply is delivered, which can then be discharged in the usual way. This increases the solids concentration in accordance with the volume reduction.

Die Erfindung wird nachstehend anhand der Figuren 1 und 2 beispielsweise erläutert. Es zeigt

  • Figur 1 einen Querschnitt einer Rohrkegelzentrifuge und
  • Figur 2 einen Querschnitt einer Doppelkegelzentrifuge.
The invention is explained below with reference to FIGS. 1 and 2, for example. It shows
  • 1 shows a cross section of a tube cone centrifuge and
  • Figure 2 shows a cross section of a double-cone centrifuge.

Die Rohrkegelzentrifuge der Figur 1 besteht aus zwei axial getrennten Trommelhälften 11, 12, die mit dem Verdrängungskörper 20 drehbar sind. Beide Trommelhälften sind durch ein Rohr 13 verbunden, das am einen Ende geschlossen ist und durch einen doppelt wirkenden Hydraulikzylinder 18 axial verschiebbar ist. Durch axiale Verschiebung dieses Rohres 13 kann das in der Trommel befindliche trockene Schleudergut abgeschleudert werden. vThe tube cone centrifuge of Figure 1 consists of two axially separated drum halves 11, 12 which are rotatable with the displacement body 20. Both drum halves are connected by a tube 13, which is closed at one end and is axially displaceable by a double-acting hydraulic cylinder 18. By axially shifting this tube 1 3, the dry centrifugal material in the drum can be thrown off. v

Die eine Trommelhälfte 12 ist durch einen Hydraulikzylinder 19 aus ihrer Ausgangsstellung, die sie einnimmt, wenn die Trommel der Zentrifuge gefüllt ist, gegen die andere, feststehende Trommelhälfte 12 axial verschiebbar, so daß der Trommelinnenraum verkleinert werden kann.One drum half 12 is axially displaceable by a hydraulic cylinder 19 from its initial position, which it assumes when the centrifuge drum is filled, against the other, fixed drum half 12, so that the drum interior can be reduced in size.

Im Betrieb wird das Schleudergut über einen Kanal 15 dem einen Ende des Trommelinnenraumes zugeführt. Nach Einführen in den Trommelinnenraum wird das Schleudergut der Zentrifugalkraft der Zentrifuge unterworfen, so daß sich die Feststoffe radial außen ablagern und die flüssige Phase bzw. Klarphase über einen Auslaß 16 abgeleitet werden kann. Auf einem im Trommelinnenraum angeordneten Verdrängungskörper'20 kann ein Filter angeordnet sein, über das die Klarphase- in den Auslaß 16 gelangt. Durch die axiale Verschiebung der Trommelhälfte 12 ist es möglich, das radial außen befindliche Schleudergut zusammenzupressen, so daß es radial nach innen klare Flüssigkeit abgibt und dadurch die Feststoffkonzentration des im Trommelinnenraum befindlichen Schleuderguts erhöht wird. Zweckmäßigerweise ist die verschiebbare Trommelhälfte 12 so ausgebildet, daß sie den über den Verdrängungskörper 20 in die Zentrifugentrommem mündenden Zulauf bei der Verstellung zur Verkleinerung des Trommelinnenraumes verschließt, so daß in der Endphase des Betriebs kein Schleudergut mehr in die Trommel gelangt. Auf dem Verdrängungskörper 20 ist zweckmäßigerweise wenigstens im Bereich des Auslaufs ein Sieb oder Filter angeordnet, das außer der Filterwirkung auch den Zweck hat, nach einer bestimmten Betriebsdauer im Zulauf einen Druckanstieg zu bewirken, der für Steuerungszwecke der Zentrifuge verwendet werden kann.In operation, the centrifuged material is fed to one end of the drum interior via a channel 15. After introduction into the interior of the drum, the centrifugal material is subjected to the centrifugal force, so that the solids are deposited radially on the outside and the liquid phase or K lar phase can be discharged via an outlet 16. A filter can be arranged on a displacement body 20 arranged in the interior of the drum, through which the clear phase reaches the outlet 16. The axial displacement of the drum half 12 makes it possible to compress the centrifugal material located radially on the outside, so that it releases clear liquid radially inwards and thereby the solids concentration of the centrifuge located in the interior of the drum guts is increased. The displaceable drum half 12 is expediently designed in such a way that it closes the inlet opening via the displacement body 20 into the centrifuge drum during the adjustment in order to reduce the size of the drum interior, so that in the final phase of operation no centrifugal material gets into the drum. A sieve or filter is expediently arranged on the displacement body 20, at least in the area of the outlet, which, in addition to the filter effect, also has the purpose, after a certain operating time, of causing an increase in pressure in the inlet which can be used for control purposes of the centrifuge.

Figur 2 zeigt die Anwendung des Prinzips der Verkleinerung des Trommelinnenraumes auf eine Doppelkegelzentrifuge oder einen Separator. Die Zentrifuge hat wiederum zwei Trommelhälften 11, 12, mit vertikaler Achse, wobei die Trommelhälfte 12 in üblicher Weise gegenüber der Trommelhälfte 11 zum öffnen der Zentrifuge verschiebbar ist. Die Trommelhälfte 12 hat einen zylindrischen Ansatz 21, in dem ein Kolben 22 zur Verkleinerung des Trommelinnenraumes verschiebbar angeordnet ist.Figure 2 shows the application of the principle of reducing the drum interior to a double-cone centrifuge or a separator. The centrifuge in turn has two drum halves 11, 12, with a vertical axis, the drum half 12 being displaceable in the usual way with respect to the drum half 11 to open the centrifuge. The drum half 12 has a cylindrical projection 21, in which a piston 22 is slidably arranged to reduce the interior of the drum.

Claims (8)

1. Zentrifuge, insbesondere Rohrkegelzentrifuge, zum Klären von Flüssigkeiten und zum Eindicken von Schlamm, deren Znetrifugentrommel aus zwei Trommelhälften und einem die Trommelhälften verbindenden, axial verschiebbaren Rohr besteht, mit axialer Zuführung des Schleudergutes, dadurch gekennzeichnet,
daß wenigstens ein Teil wenigstens einer der Trommelhälften (11, 12) gegenüber der anderen zur Verkleinerung des Trommelinnenraumes während des Laufes der Zentrifuge axial verschiebbar ist.1. Centrifuge, in particular a tubular cone centrifuge, for clarifying liquids and for thickening sludge, the centrifuge drum of which consists of two drum halves and an axially displaceable tube connecting the drum halves, with axial feed of the centrifuged material, characterized in that
that at least a part of at least one of the drum halves (11, 12) is axially displaceable relative to the other to reduce the interior of the drum while the centrifuge is running. 2. Zentrifuge nach Anspruch 1, dadurch gekennzeichnet, daß die axiale verschiebung hydraulisch, pneumatisch, elektrisch oder mechanisch erfolgt.2. Centrifuge according to claim 1, characterized in that the axial displacement is carried out hydraulically, pneumatically, electrically or mechanically. 3. Zentrifuge nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß eine oder beide Trommelhälften (11, 12) scheibenförmig ausgebildet sind.3. Centrifuge according to claim 1 or 2, characterized in that one or both drum halves (11, 12) are disc-shaped. 4. Zentrifuge nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Trommelhälften (11, 12) kegelförmig ausgebildet sind.4. Centrifuge according to claim 1 or 2, characterized in that the drum halves (11, 12) are conical. 5. Zentrifuge nach Anspruch 4, dadurch gekennzeichnet, daß wenigstens eine der kegelförmigen Trommelhälften einen zylindrischen Ansatz aufweist, in dem ein Kolben verschiebbar angeordnet ist.5. Centrifuge according to claim 4, characterized in that at least one of the conical drum halves has a cylindrical projection in which a piston is arranged displaceably. 6. Zentrifuge nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Zulauf ip der Zentrifugentrommel durch die verschiebbare Trommelhälfte verschließbar ist.6. Centrifuge according to one of claims 1 to 5, characterized in that the inlet ip of the centrifuge drum can be closed by the displaceable drum half. 7. Zentrifuge nach Anspruch 6, dadurch gekennzeichnet, daß der Zulauf über einen Verdrängungskörper (20) in die Zentrifugentrommel mündet.7. Centrifuge according to claim 6, characterized in that the inlet via a displacement body (20) opens into the centrifuge drum. 8. Zentrifuge nach Anspruch 7, dadurch gekennzeichnet, daß wenigstens im Auslaufbereich auf dem Verdrängungskörper (20) ein Sieb oder Filter angeordnet ist.8. Centrifuge according to claim 7, characterized in that a sieve or filter is arranged at least in the outlet area on the displacement body (20).
EP79104067A 1979-10-19 1979-10-19 Centrifuge Expired EP0027476B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT79104067T ATE5515T1 (en) 1979-10-19 1979-10-19 CENTRIFUGE.
EP79104067A EP0027476B1 (en) 1979-10-19 1979-10-19 Centrifuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79104067A EP0027476B1 (en) 1979-10-19 1979-10-19 Centrifuge

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EP0027476A1 true EP0027476A1 (en) 1981-04-29
EP0027476B1 EP0027476B1 (en) 1983-12-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015399A1 (en) * 1996-04-24 1997-05-01 Claude Fell Cell separation system for biological fluids like blood

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR413517A (en) * 1910-03-11 1910-08-11 Claude Rene Pinette Device for purifying the washing water of coals or ores
US2360455A (en) * 1942-08-01 1944-10-17 Vilter Mfg Co Centrifuge
FR1362722A (en) * 1962-05-19 1964-06-05 Centrifuge with decanter and sieve
DE2737759A1 (en) * 1977-08-22 1979-03-01 Otto Wimmer Sludge-thickening centrifuge - has hollow shaft-mounted drum with cylindrical filter inside drum

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR413517A (en) * 1910-03-11 1910-08-11 Claude Rene Pinette Device for purifying the washing water of coals or ores
US2360455A (en) * 1942-08-01 1944-10-17 Vilter Mfg Co Centrifuge
FR1362722A (en) * 1962-05-19 1964-06-05 Centrifuge with decanter and sieve
DE2737759A1 (en) * 1977-08-22 1979-03-01 Otto Wimmer Sludge-thickening centrifuge - has hollow shaft-mounted drum with cylindrical filter inside drum

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015399A1 (en) * 1996-04-24 1997-05-01 Claude Fell Cell separation system for biological fluids like blood
US6123655A (en) * 1996-04-24 2000-09-26 Fell; Claude Cell separation system with variable size chamber for the processing of biological fluids

Also Published As

Publication number Publication date
EP0027476B1 (en) 1983-12-07
ATE5515T1 (en) 1983-12-15

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