EP0071012A1 - Centrifuge screen - Google Patents

Centrifuge screen Download PDF

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Publication number
EP0071012A1
EP0071012A1 EP82105275A EP82105275A EP0071012A1 EP 0071012 A1 EP0071012 A1 EP 0071012A1 EP 82105275 A EP82105275 A EP 82105275A EP 82105275 A EP82105275 A EP 82105275A EP 0071012 A1 EP0071012 A1 EP 0071012A1
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EP
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Prior art keywords
sieve
centrifuge
bars
axial direction
drum
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Granted
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EP82105275A
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German (de)
French (fr)
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EP0071012B1 (en
Inventor
Leonhard Spiewok
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Sulzer Escher Wyss AG
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Sulzer Escher Wyss AG
Escher Wyss AG
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Priority to AT82105275T priority Critical patent/ATE10442T1/en
Publication of EP0071012A1 publication Critical patent/EP0071012A1/en
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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
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/16—Sieves or filters

Definitions

  • the invention relates to a centrifuge sieve with a supporting structure resting on the inside of a centrifugal drum, to which sieve bars made of wear-resistant hard material are attached at at least two points in the axial direction of the centrifugal drum.
  • the centrifugal drum is connected to the drum supporting structure by gluing to protect the drum against wear.
  • elastic intermediate layers are provided in these connections, e.g. Rubber intermediate elements.
  • these are not sufficiently durable, not temperature-resistant and not corrosion-resistant during operation.
  • they allow mobility in several directions, which allows undesired and impermissible deformations of the sieve bars and support structure against each other.
  • Another disadvantage is the poor processability, difficult and unsuitable for mass production assembly.
  • the invention has for its object to avoid the above-mentioned disadvantages of the prior art and to provide a centrifuge screen in which the hard material sieve bars permanently, temperature and corrosion resistant, movable in a defined manner against the supporting structure and connected to it and easy to process and are mountable.
  • this object is achieved in that the sieve bars are firmly connected to the support structure at one point, while connections are provided at the other points which only allow the sieve bars to move relative to the support structure in the axial direction.
  • connections are designed as riveted connections, the hard material sieve rods being riveted to the supporting structure at one point in each case, while rivets are provided at the other connection points on the sieve rods, which run in the axial direction of the centrifugal drum Slots in the support structure are movable.
  • rivets instead of rivets, however, other suitable connecting elements can also be provided, e.g. Screws, pins, bolts or the like.
  • the centrifuge sieve shown in FIGS. 1, 2 and 3 has a centrifugal drum T with a drum diameter from decimeter to meter range, on the inside of which a sieve-like support structure 1 rests, on the inside of which, in turn, as wear protection, a plurality of sieves made of hard material rods 2 with a thickness of a few mm and a length up to about 30 cm in the axial direction of the centrifugal drum are attached to each other at a small lateral distance.
  • the support structure 1 is made of a suitable metal, e.g. Steel, and has sieve slots 3 or holes for the passage of the filtrate when centrifuging. Instead, however, the support structure can also consist of a framework of rings which are connected to one another by axially parallel rods, so that the required sieve slots are created between the rods.
  • annular webs 4 are provided, on which the support structure 1 rests, a passage for the filtrate through the spaces 5 between the sieve bars 2, the underlying slots of the support structure 1 and slots 6 offset therefrom in the drum T being formed .
  • the sieve bars 2 are made of a wear-resistant hard material, for example melt basalt or sintered material, such as sintered ceramic or cemented carbide, for example tungsten carbide. Since temperature fluctuations of up to 100 ° C can occur during operation of the centrifuge, precautions must be taken to compensate for the length compensation due to the very different thermal expansion of the materials of the hard material, e.g. tungsten carbide, and the supporting structure, e.g. steel, when attaching the sieve bars 2 to the supporting structure 1. to avoid deformation and breakage of the sieve bars.
  • a wear-resistant hard material for example melt basalt or sintered material, such as sintered ceramic or cemented carbide, for example tungsten carbide. Since temperature fluctuations of up to 100 ° C can occur during operation of the centrifuge, precautions must be taken to compensate for the length compensation due to the very different thermal expansion of the materials of the hard material, e.g. tungsten carbide, and the supporting structure, e.g. steel, when attaching the sieve bars
  • a plurality of rivets 7, 8 made of stainless, high-alloy steel are soldered to the sieve bars 2, if necessary with suitable transition layers known to the person skilled in the art, depending on the material
  • the support structure is provided with corresponding rivet holes 9, 10.
  • the corresponding rivet holes 9 have a circular shape, so that when riveting a firm, immobile connection between the sieve bar 2 and the support structure 1 is created.
  • all other rivet holes 10 for the remaining rivets 8 are in the form of elongated slots 10 running in the axial direction.
  • FIG. 4 shows another example in which several layers of sieve bars 2 1 , 2 2 in Axis direction are arranged a short distance behind one another.
  • Each the sieve rod is riveted to the supporting structure 1 at one end 11 1 , 11 2 and immovably and at the other end 12 1 , 12 2 by means of slot-shaped rivet holes in the axial direction.
  • the use of several layers of sieve bars allows a longer length of the sieve drum, up to several meters. This is particularly advantageous for sintered materials that only allow a limited rod length.
  • the support structure can also consist of several parts arranged one behind the other in the axial direction, with each support structure part, for example, carrying only one sieve bar layer.
  • suitable other connecting elements can also be used within the scope of the invention, e.g. Screws, pins, bolts, which engage in corresponding holes or bores, whereby in each case one of the holes for each sieve bar can be circular and the rest elongated, oval or slit-shaped in order to ensure the desired mobility in the axial direction.

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Abstract

In a centrifuge sieve drum wherein the inner surface of the drum is lined with a support arrangement which carries wear-resistant sieve or screen rods formed of a hard material, there is obtained a compensation of the different thermal expansions of the sieve or screen rods and the support arrangement in that, the sieve or screen rods are fixedly connected, in each case, as by riveting or by a threaded connection, at one location with the support arrangement of the sieve drum, whereas the rivets or threaded screws at other connection locations are moveable in a slot-shaped or elongate hole in the axial direction of the sieve drum.

Description

Die Erfindung betrifft ein Zentrifugensieb mit einem auf der Innenseite einer Schleudertrommel aufliegenden Stützwerk, an dem an wenigstens zwei Stellen in Achsrichtung der Schleudertrommel verlaufende, aus verschleissfestem Hartstoff bestehende Siebstäbe befestigt sind.The invention relates to a centrifuge sieve with a supporting structure resting on the inside of a centrifugal drum, to which sieve bars made of wear-resistant hard material are attached at at least two points in the axial direction of the centrifugal drum.

Bei derartigen, z.B. aus DE-OS 28 30 388 oder US 4 259 136 bekannten Zentrifugensieben sind die Schleudertrommel vor Verschleiss schützende HartstoffStäbe am Stützwerk der Trommel mittels Verklebungen verbunden. Zum Ausgleich der unterschiedlichen Wärmeausdehnung der Hartstoffstäbe und des aus einem Material mit anderem Wärmeausdehnungskoeffizienten bestehenden Stützwerkes sind bei diesen Verbindungen elastische Zwischenschichten vorgesehen, z.B. Gummi-Zwischenelemente. Diese sind jedoch im Betrieb nicht genügend dauerhaft, nicht temperaturbeständig und nicht korrosionsfest. Ausserdem gestatten sie eine Beweglichkeit in mehreren Richtungen, was unerwünschte und unzulässige Deformationen von Siebstäben und Stützwerk gegeneinander zulässt. Nachteilig ist weiterhin die schlechte Verarbeitbarkeit, schwierige und zur Massenfabrikation ungeeignete Montage.In such, e.g. Centrifugal sieves known from DE-OS 28 30 388 or US Pat. No. 4,259,136, the centrifugal drum is connected to the drum supporting structure by gluing to protect the drum against wear. To compensate for the different thermal expansion of the hard material rods and the support structure consisting of a material with a different thermal expansion coefficient, elastic intermediate layers are provided in these connections, e.g. Rubber intermediate elements. However, these are not sufficiently durable, not temperature-resistant and not corrosion-resistant during operation. In addition, they allow mobility in several directions, which allows undesired and impermissible deformations of the sieve bars and support structure against each other. Another disadvantage is the poor processability, difficult and unsuitable for mass production assembly.

Der Erfindung liegt die Aufgabe zugrunde, die vorstehend erwähnten Nachteile des Standes der Technik zu vermeiden und ein Zentrifugensieb zu schaffen, bei dem die Hartstoff-Siebstäbe dauerhaft, temperatur- und korrosionsfest, in definierter Weise gegen das Stützwerk beweglich und mit diesem verbunden und leicht verarbeitbar und montierbar sind.The invention has for its object to avoid the above-mentioned disadvantages of the prior art and to provide a centrifuge screen in which the hard material sieve bars permanently, temperature and corrosion resistant, movable in a defined manner against the supporting structure and connected to it and easy to process and are mountable.

Erfindungsgemäss wird diese Aufgabe dadurch gelöst, dass die Siebstäbe an einer Stelle fest mit dem Stützwerk verbunden sind, während an den anderen Stellen Verbindungen vorgesehen sind, die eine Beweglichkeit der Siebstäbe gegenüber dem Stützwerk nur in Achsrichtung gestatten.According to the invention, this object is achieved in that the sieve bars are firmly connected to the support structure at one point, while connections are provided at the other points which only allow the sieve bars to move relative to the support structure in the axial direction.

Eine besonders vorteilhafte Lösung ergibt sich, wenn die Verbindungen als Nietverbindungen ausgeführt sind, wobei die Hartstoff-Siebstäbe an jeweils einer Stelle fest mit dem Stützwerk vernietet sind, während an den anderen Verbindungsstellen an den Siebstäben Nieten vorgesehen sind,die in in Achsrichtung der Schleudertrommel verlaufenden Schlitzen im Stützwerk beweglich sind. Statt Nieten können jedoch auch andere geeignete Verbindungselemente vorgesehen sein, z.B. Schrauben, Stifte, Bolzen oder dergleichen.A particularly advantageous solution results if the connections are designed as riveted connections, the hard material sieve rods being riveted to the supporting structure at one point in each case, while rivets are provided at the other connection points on the sieve rods, which run in the axial direction of the centrifugal drum Slots in the support structure are movable. Instead of rivets, however, other suitable connecting elements can also be provided, e.g. Screws, pins, bolts or the like.

Die Erfindung wird anhand der in den Figuren dargestellten Ausführungsbeispiele erläutert.

  • Figur 1 zeigt ein Zentrifugensieb in Perspektive
  • Figur 2 zeigt einen Axialschnitt dieses Zentrifugensiebes
  • Figur 3 zeigt einen Ausschnitt der Trommelaussenwand dieses Zentrifugensiebes
  • Figur 4 zeigt einen Ausschnitt der Trommelaussenwand eines anderen Zentrifugensiebes
The invention is explained on the basis of the exemplary embodiments shown in the figures.
  • Figure 1 shows a centrifuge screen in perspective
  • Figure 2 shows an axial section of this centrifuge sieve
  • Figure 3 shows a section of the drum outer wall of this centrifuge screen
  • Figure 4 shows a section of the drum outer wall of another centrifuge sieve

Das in den Figuren 1, 2 und 3 dargestellte Zentrifugensieb weist eine Schleudertrommel T mit einem Trommeldurchmesser von Dezimeter- bis zum Meter-Bereich auf, auf deren Innenseite ein siebartiges Stützwerk 1 aufliegt, an dessen Innenseite wiederum als Verschleissschutz eine Vielzahl von aus Hartstoff bestehenden Siebstäben 2 mit einer Dicke von einigen mm und einer Länge bis etwa 30 cm in Achsrichtung der Schleudertrommel in geringem seitlichen Abstand voneinander befestigt sind.The centrifuge sieve shown in FIGS. 1, 2 and 3 has a centrifugal drum T with a drum diameter from decimeter to meter range, on the inside of which a sieve-like support structure 1 rests, on the inside of which, in turn, as wear protection, a plurality of sieves made of hard material rods 2 with a thickness of a few mm and a length up to about 30 cm in the axial direction of the centrifugal drum are attached to each other at a small lateral distance.

Das Stützwerk 1 ist aus einem geeigneten Metall ausgeführt, z.B. Stahl,und weist Siebschlitze 3 oder Löcher zum Durchtritt des Filtrats beim Zentrifugieren auf. Statt dessen kann das Stützwerk jedoch auch aus einem Gerüst von Ringen bestehen, die durch achsparallele Stäbe miteinander verbunden sind, so dass zwischen den Stäben die erforderlichen Siebschlitze entstehen. Auf der Innenseite der Trommel T sind ringförmige Stege 4 vorgesehen, auf denen das Stützwerk 1 aufliegt, wobei ein Durchtrittsweg für das Filtrat durch die Zwischenräume 5 zwischen den Siebstäben 2 den darunterliegenden Schlitzen des Stützwerkes 1 und dazu versetzten Schlitzen 6 in der Trommel T gebildet wird.The support structure 1 is made of a suitable metal, e.g. Steel, and has sieve slots 3 or holes for the passage of the filtrate when centrifuging. Instead, however, the support structure can also consist of a framework of rings which are connected to one another by axially parallel rods, so that the required sieve slots are created between the rods. On the inside of the drum T, annular webs 4 are provided, on which the support structure 1 rests, a passage for the filtrate through the spaces 5 between the sieve bars 2, the underlying slots of the support structure 1 and slots 6 offset therefrom in the drum T being formed .

Die Siebstäbe 2 sind aus einem verschleissfesten Hartstoff ausgeführt, z.B. Schmelzbasalt oder Sintermaterial, wie Sinterkeramik oder Sinterkarbid, z.B. Wolfram-karbid. Da beim Betrieb der Zentrifuge Temperaturschwankungen bis 100 °C auftreten können, müssen wegen der stark unterschiedlichen Wärmeausdehnung der Materialien des Hartstoffes, z.B. Wolframkarbid,und des Stützwerkes, z.B. Stahl, bei der Befestigung der Siebstäbe 2 am Stützwerk 1 Vorkehrungen für einen Längenausgleich getroffen werden, um Deformationen und einen Bruch der Siebstäbe zu vermeiden. Zu diesem Zweck sind an die Siebstäbe 2 mehrere Nieten 7,8 aus rostfreiem, hochlegiertem Stahl angelötet, nötigenfalls je nach Material mit geeigneten, dem Fachmann bekannten Uebergangsschichten. Das Stützwerk ist mit entsprechenden Nietlöchern 9,10 versehen. Für eine der Nieten, im dargestellten Beispiel der mittleren Nieten 7, haben die entsprechenden Nietlöcher 9 Kreisform, so dass beim Vernieten eine feste, unbewegliche Verbindung zwischen Siebstab 2 und Stützwerk 1 entsteht. Dagegen sind alle anderen Nietlöcher 10 für die übrigen Nieten 8 in Form von länglichen, in Achsrichtung verlaufenden Schlitzen 10 ausgebildet. Die Vernietung erfolgt nun gerade so, dass die Siebstäbe zwar in radialer Richtung unbeweglich sind, jedoch nur in Längsrichtung, also in Achsrichtung der Schleudertrommel ein Längenausgleich möglich ist. In Umfangsrichtung wird eine Bewegung durch die axiale Ausrichtung der Schlitze 10 verunmöglicht.The sieve bars 2 are made of a wear-resistant hard material, for example melt basalt or sintered material, such as sintered ceramic or cemented carbide, for example tungsten carbide. Since temperature fluctuations of up to 100 ° C can occur during operation of the centrifuge, precautions must be taken to compensate for the length compensation due to the very different thermal expansion of the materials of the hard material, e.g. tungsten carbide, and the supporting structure, e.g. steel, when attaching the sieve bars 2 to the supporting structure 1. to avoid deformation and breakage of the sieve bars. For this purpose, a plurality of rivets 7, 8 made of stainless, high-alloy steel are soldered to the sieve bars 2, if necessary with suitable transition layers known to the person skilled in the art, depending on the material The support structure is provided with corresponding rivet holes 9, 10. For one of the rivets, in the example shown the middle rivets 7, the corresponding rivet holes 9 have a circular shape, so that when riveting a firm, immobile connection between the sieve bar 2 and the support structure 1 is created. In contrast, all other rivet holes 10 for the remaining rivets 8 are in the form of elongated slots 10 running in the axial direction. The riveting is now carried out in such a way that the sieve bars are immovable in the radial direction, but length compensation is only possible in the longitudinal direction, that is to say in the axial direction of the centrifugal drum. Movement in the circumferential direction is made impossible by the axial alignment of the slots 10.

Durch die beschriebene Anordnung wird eine definierte Beweglichkeit der Siebstäbe gegen das Stützwerk nur in Ausdehnungsrichtung, d.h. der Längsrichtung der Siebstäbe erreicht, und zwar unter ausschliesslicher Verwendung sehr dauerhafter und temperatur- und korrosionsbeständiger Werkstoffe. Im Vergleich zu bekannten Zentrifugensieben mit elastischen Gummi- oder Kunststoff-Ver- . bindungselementen konnte mit der beschriebenen Anordnung im praktischen Betrieb die Lebensdauer vervielfacht und die Korrosionsfestigkeit erheblich verbessert werden. Ein weiterer Vorteil ist die wesentlich leichtere Auswechselbarkeit der Siebstäbe.With the arrangement described, a defined mobility of the sieve bars against the supporting structure is only possible in the direction of expansion, i.e. reached in the longitudinal direction of the sieve bars, using only very durable and temperature and corrosion resistant materials. Compared to known centrifuge sieves with elastic rubber or plastic connections. Binding elements could be multiplied with the described arrangement in practical operation, the lifespan and the corrosion resistance significantly improved. Another advantage is the much easier interchangeability of the sieve bars.

Während bei dem in den Figuren 1,2 und 3 dargestellten Beispiel die Siebstäbe in der Mitte fest angenietet sind und an beiden Enden eine gewisse Beweglichkeit vorgesehen ist, zeigt Figur 4 ein anderes Beispiel, bei dem mehrere Lagen von Siebstäben 21, 22 in Achsrichtung in geringem Abstand hintereinander angeordnet sind. Jeder Siebstab ist an einem Ende 111, 112 fest und unbeweglich mit dem Stützwerk 1 vernietet und am anderen Ende 121, 122 mittels schlitzförmiger Nietlöcher in Achsrichtung beweglich. Zwischen den Siebstäben 21, 22 sind im Stützwerk 1 mehrere Reihen von Siebschlitzen 31, 32 vorgesehen, durch die das Filtrat abfliessen kann. Im Vergleich zum ersten Beispiel lässt sich durch die Verwendung mehrerer Lagen von Siebstäben eine grössere Länge der Siebtrommel erreichen, bis zu mehreren Metern. Diese ist besonders bei Sintermaterialien von Vorteil, die nur eine begrenzte Stablänge gestatten. Das Stützwerk kann bei dieser Ausführung ebenfalls aus mehreren in Achsrichtung hintereinander angeordneten Teilen bestehen, wobei jeder Stützwerkteil beispielsweise nur eine Siebstab-Lage trägt.While in the example shown in FIGS. 1 , 2 and 3 the sieve bars are riveted in the middle and a certain mobility is provided at both ends, FIG. 4 shows another example in which several layers of sieve bars 2 1 , 2 2 in Axis direction are arranged a short distance behind one another. Each the sieve rod is riveted to the supporting structure 1 at one end 11 1 , 11 2 and immovably and at the other end 12 1 , 12 2 by means of slot-shaped rivet holes in the axial direction. Between the sieve bars 2 1 , 2 2 several rows of sieve slots 3 1 , 3 2 are provided in the support structure 1, through which the filtrate can flow off. In comparison to the first example, the use of several layers of sieve bars allows a longer length of the sieve drum, up to several meters. This is particularly advantageous for sintered materials that only allow a limited rod length. In this embodiment, the support structure can also consist of several parts arranged one behind the other in the axial direction, with each support structure part, for example, carrying only one sieve bar layer.

Es wird bemerkt, dass statt Nieten, wie im vorstehend beschriebenen Beispiel, auch geeignete andere Verbindungselemente im Rahmen der Erfindung benutzt werden können, z.B. Schrauben, Stifte, Bolzen, die in entsprechende Löcher oder Bohrungen eingreifen, wobei wiederum jeweils eines der Löcher für jeden Siebstab kreisrund und die übrigen länglich, oval oder schlitzförmig ausgeführt sein können, um die gewünschte Beweglichkeit in Achsrichtung zu gewährleisten.It is noted that instead of rivets, as in the example described above, suitable other connecting elements can also be used within the scope of the invention, e.g. Screws, pins, bolts, which engage in corresponding holes or bores, whereby in each case one of the holes for each sieve bar can be circular and the rest elongated, oval or slit-shaped in order to ensure the desired mobility in the axial direction.

Claims (7)

1. Zentrifugensieb mit einem auf der Innenseite einer Schleudertrommel aufliegenden Stützwerk, auf dem an wenigstens zwei Stellen in Achsrichtung der Schleudertrommel verlaufende, aus verschleissfestem Hartstoff bestehende Siebstäbe befestigt sind, dadurch gekennzeichnet , dass die Siebstäbe (2) an einer Stelle (7, 111, 112) fest mit dem Stützwerk (11) verbunden sind, während an den anderen Stellen (8, 121, 122) Verbindungen vorgesehen sind, die eine Beweglichkeit der Siebstäbe gegenüber dem Stützwerk nur in Achsrichtung gestatten.1. A centrifuge sieve with a supporting structure resting on the inside of a centrifugal drum, on which sieve rods made of wear-resistant hard material and extending in at least two places in the axial direction of the centrifugal drum are fastened, characterized in that the sieve rods (2) are located at one point (7, 11 1 , 11 2 ) are fixedly connected to the support structure (11), while connections are provided at the other points (8, 12 1 , 12 2 ) which only allow the sieve bars to move relative to the support structure in the axial direction. 2. Zentrifugensieb nach Anspruch 1, dadurch gekennzeichnet , dass die Verbindungen (7, 8) als Nieten, Schrauben, Stifte oder Bolzen ausgeführte Verbindungselemente aufweisen.2. Centrifuge sieve according to claim 1, characterized in that the connections (7, 8) have connecting elements designed as rivets, screws, pins or bolts. 3. Zentrifugensieb nach Anspruch 2, dadurch gekennzeichnet , dass jeweils eine Verbindung (7) eines Siebstabes mit dem Stützwerk eine festsitzende Verbindung ist, während die anderen Verbindungen dieses Siebstabes (2) in einem in Achsrichtung verlaufenden Schlitz (10) bewegliche Nieten, Schrauben, Stifte oder Bolzen (8) aufweisen.3. Centrifuge sieve according to claim 2, characterized in that in each case one connection (7) of a sieve bar to the supporting structure is a fixed connection, while the other connections of this sieve bar (2) are movable rivets, screws, in a slot (10) running in the axial direction. Have pins or bolts (8). 4. Zentrifugensieb nach Anspruch 3, dadurch gekennzeichnet , dass die Schlitze (10) im Stützwerk vorgesehen sind und dass die Verbindungselemente (7, 8) auf den Siebstäben (2) aufgelötet sind, nötigenfalls mit geeigneten Uebergangsschichten.4. Centrifuge sieve according to claim 3, characterized in that the slots (10) are provided in the supporting structure and that the connecting elements (7, 8) are soldered onto the sieve bars (2), if necessary with suitable transition layers. 5. Zentrifugensieb nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet , dass die Siebstäbe (2) aus Sinterwerkstoff bestehen.5. Centrifuge sieve according to one of claims 1-4, characterized in that the sieve bars (2) consist of sintered material. 6. Zentrifugensieb nach Anspruch 5, dadurch gekennzeichnet , dass die Siebstäbe (2) aus Sinter-Keramik oder Sinter-Karbid oder Schmelzbasalt bestehen.6. Z entrench sieve according to claim 5, characterized in that the sieve bars (2) consist of sintered ceramic or sintered carbide or molten basalt. 7. Zentrifugensieb nach Anspruch 6, dadurch gekennzeichnet , dass die Siebstäbe (2) aus Wolfram-Karbid bestehen.7. Z entrench sieve according to claim 6, characterized in that the sieve bars (2) consist of tungsten carbide.
EP82105275A 1981-07-24 1982-06-16 Centrifuge screen Expired EP0071012B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105275T ATE10442T1 (en) 1981-07-24 1982-06-16 CENTRIFUGE SCREEN.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4826/81 1981-07-24
CH4826/81A CH654759A5 (en) 1981-07-24 1981-07-24 CENTRIFUGAL SCREEN.

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EP0071012A1 true EP0071012A1 (en) 1983-02-09
EP0071012B1 EP0071012B1 (en) 1984-11-28

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US (1) US4430221A (en)
EP (1) EP0071012B1 (en)
JP (1) JPS5827659A (en)
AT (1) ATE10442T1 (en)
AU (1) AU552647B2 (en)
BR (1) BR8204275A (en)
CA (1) CA1186656A (en)
CH (1) CH654759A5 (en)
DE (1) DE3261368D1 (en)
ES (1) ES8308717A1 (en)
IN (1) IN154985B (en)
ZA (1) ZA824500B (en)

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EP0104458A2 (en) * 1982-09-27 1984-04-04 Sulzer-Escher Wyss AG Centrifuge sieve and process for its production
US5264124A (en) * 1992-02-05 1993-11-23 Inter-Source Recovery Systems, Inc. Segmented centrifugal separator scroll housing with removable scroll segments

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US4986900A (en) * 1989-04-04 1991-01-22 A. Ahlstrom Corporation Sectional screen cylinder
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US6312610B1 (en) * 1998-07-13 2001-11-06 Phase Inc. Density screening outer wall transport method for fluid separation devices
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US6752165B2 (en) 2000-03-08 2004-06-22 J & L Fiber Services, Inc. Refiner control method and system
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US6755969B2 (en) 2001-04-25 2004-06-29 Phase Inc. Centrifuge
US6805805B2 (en) * 2001-08-13 2004-10-19 Phase Inc. System and method for receptacle wall vibration in a centrifuge
US6706180B2 (en) * 2001-08-13 2004-03-16 Phase Inc. System for vibration in a centrifuge
US20030150782A1 (en) * 2002-02-14 2003-08-14 Chao-Ho Chen Screen for paper pulp
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US6971525B2 (en) * 2003-06-25 2005-12-06 Phase Inc. Centrifuge with combinations of multiple features
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104458A2 (en) * 1982-09-27 1984-04-04 Sulzer-Escher Wyss AG Centrifuge sieve and process for its production
EP0104458A3 (en) * 1982-09-27 1985-05-29 Sulzer-Escher Wyss Ag Centrifuge sieve and process for its production
US5264124A (en) * 1992-02-05 1993-11-23 Inter-Source Recovery Systems, Inc. Segmented centrifugal separator scroll housing with removable scroll segments
US5383941A (en) * 1992-02-05 1995-01-24 Inter-Source Recovery Systems, Inc. Segmented centrifugal separator scroll housing

Also Published As

Publication number Publication date
IN154985B (en) 1984-12-22
AU552647B2 (en) 1986-06-12
CA1186656A (en) 1985-05-07
AU8637182A (en) 1983-01-27
ZA824500B (en) 1983-04-27
BR8204275A (en) 1983-07-19
CH654759A5 (en) 1986-03-14
DE3261368D1 (en) 1985-01-10
ES514293A0 (en) 1983-10-01
ES8308717A1 (en) 1983-10-01
JPS5827659A (en) 1983-02-18
ATE10442T1 (en) 1984-12-15
JPH0148062B2 (en) 1989-10-17
EP0071012B1 (en) 1984-11-28
US4430221A (en) 1984-02-07

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