EP0266669A1 - Hydrocyclone, or hydrocyclone parts, and methods for manufacturing them - Google Patents

Hydrocyclone, or hydrocyclone parts, and methods for manufacturing them Download PDF

Info

Publication number
EP0266669A1
EP0266669A1 EP87115828A EP87115828A EP0266669A1 EP 0266669 A1 EP0266669 A1 EP 0266669A1 EP 87115828 A EP87115828 A EP 87115828A EP 87115828 A EP87115828 A EP 87115828A EP 0266669 A1 EP0266669 A1 EP 0266669A1
Authority
EP
European Patent Office
Prior art keywords
hydrocyclone
layer
outer layer
inner layer
parts according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87115828A
Other languages
German (de)
French (fr)
Other versions
EP0266669B1 (en
Inventor
Friedrich Dipl.-Ing. Donhauser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AKW Apparate und Verfahren GmbH
Original Assignee
AKW Apparate und Verfahren GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AKW Apparate und Verfahren GmbH filed Critical AKW Apparate und Verfahren GmbH
Priority to AT87115828T priority Critical patent/ATE55071T1/en
Publication of EP0266669A1 publication Critical patent/EP0266669A1/en
Application granted granted Critical
Publication of EP0266669B1 publication Critical patent/EP0266669B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/085—Vortex chamber constructions with wear-resisting arrangements

Definitions

  • the invention initially relates to a hydrocyclone or hydrocyclone parts according to the preamble of claim 1.
  • the outer layer consisted of a steel shell and the inner layer consisted of a relatively soft polyurethane.
  • This is disadvantageous in several ways.
  • Such a steel shell or layer is quite expensive to manufacture.
  • the steel shell is very heavy due to the use of steel, which increases the total weight of the hydrocyclone accordingly.
  • a heavy hydrocyclone requires more stable or stronger foundations. In the case of transport, the transport costs are correspondingly higher.
  • the outer steel layer or shell will be removed very quickly by the constituents of the suspension to be processed in the hydrocyclone, since steel has a relatively low wear resistance against any abrasion caused thereby.
  • the object of the invention is to improve a hydrocyclone or hydrocyclone parts according to the preamble of claim 1 in such a way that on the one hand the production costs and the weight are reduced, but on the other hand the overall wear resistance is increased.
  • a preferred embodiment of the invention is the subject of claim 2.
  • Such a cast composite of the two layers with one another brings about an intimate adhesion between the inner layer and the outer layer, as in the state explained the technology is not given. This results in greater stability of the hydrocyclone or hydrocyclone part and, in those cases in which a part of the inner layer has already been worn out, there is still sufficient hold of the remaining part of the inner layer on the outer layer.
  • the features of claim 3 give the possibility, after a complete or partial wear of the inner layer, in a relatively simple manner, for. B. by belching or tapping with a hammer to detach from the outer layer. A new inner layer manufactured in the factory can then be reinserted into the existing outer layer.
  • a preferred combined use of features of claim 2 on the one hand and the features of claim 3 on the other hand is the content of claim 4, which can optionally be supplemented by claim 5.
  • This means that the solid, stability-enhancing cohesion due to the cast compound is limited to the upper part, which is correspondingly stressed by the inflow, while the lower area (lower part, or middle part and lower part), which is particularly exposed to wear, enables quick and easy replaceability of a worn inner layer.
  • claims 6 and 7 represent preferred hardness information of the polyurethanes used for the outer layer and the inner layer.
  • the invention is also intended to provide advantageous methods for producing such hydrocyclones or hydrocyclone parts.
  • the invention first provides claim 8. This has the advantage that the material of the inner layer does not have to be heat-treated twice. Repeated heat treatment could cause some of the polyurethanes to suffer from their wear resistance. For this variant of the invention, somewhat larger molding costs for casting the outer layer have to be accepted.
  • the method claim 9 gives the possibility of casting the outer layer around the inner layer while reducing the molding costs.
  • the polyether polyurethane specified for this can withstand the second heat treatment in the form of annealing even without sacrificing wear resistance.
  • Such a polyether polyurethane is manufactured, for example, by DUPONT and sold by UNIROYAL under the label L 42.
  • the hydrocyclone according to the invention basically consists of three parts, namely the lower part 1, the middle part 2 and the upper part 3.
  • the lower part 1 forms the discharge 4 for the heavy or coarse fraction.
  • the middle part 2 forms the area 5, in which the fine or light fraction of the suspension is separated from the coarse or heavy fraction essentially by the hydrocyclone effect.
  • the upper part 3 contains the suspension inlet 6 and the overflow 10 of the fine or lighter fraction.
  • the parts if they have a load-bearing function, consist of an outer layer, consistently numbered 7, made of a relatively hard polyurethane, which can thus take over the load-bearing function, and a softer, very wear-resistant inner layer 8 made of a correspondingly softer polyurethane.
  • the shore hardness of the outer layers 7 is in the range from 95 to 105 Shore, while the Shore hardness of the inner layers 8 is preferably 75 to 85 Shore A.
  • the layers 7, 8 are preferably connected to one another at their contact surface 9 by a casting compound and held together. However, it can also be done in such a way that after casting one of these two layers, a thin silicone layer 11 is applied, preferably sprayed, onto the surface intended for bearing against the counter surface of the second layer. After appropriate wear, the inner layer can thus be easily detached from the outer layer and replaced by another inner layer. In the present exemplary embodiment, it is advisable to hold the outer and inner layers firmly together in the upper part 3 by means of a casting compound, but in contrast to the middle Part 2 and lower part 1 between the outer and inner layer to provide the aforementioned silicone layer, since the greatest wear is expected there. This silicone layer is only in the drawing by the number. 11 and the associated dividing line between the inner and outer layers of the hydrocyclone parts 2 and 1 are indicated.
  • a polyurethane should be selected for the inner layer that can withstand the two heat treatments without loss of wear resistance.
  • a polyether polyurethane with a Shore hardness in the range of 80 Shore A is provided.
  • the invention is explained above using the exemplary embodiment of a hydrocyclone which is composed of several parts. As already mentioned at the beginning, the invention also relates to such a design, i.e. one-piece hydrocyclone. In the latter case, the above is recommended. Cast compound.

Landscapes

  • Laminated Bodies (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

1. Hydrocyclone or hydrocyclone parts consisting of a hard supporting outer layer of synthetic material and a comparatively softer inner layer of synthetic material, characterised thereby, that the outer layer (7) consists of a relatively hard polyurethane and the inner layer (8) consists of a comparative softer polyurethane more resistant to wear and that the outer layer (7) and the inner layer (8) at their common transition or contact surfaces (9) each stand in a cast bond with the other.

Description

Die Erfindung betrifft zunächst einen Hydrozyklon, bzw. Hydrozyklonteile gemäß dem Oberbegriff des Anspruches 1. Bei bekannten Hydrozyklonen, bzw. Hydrozyklonteilen dieser Art bestand die Außenschicht aus einer Stahlhülle und die Innenschicht aus einem relativ weichen Polyurethan. Dies ist in mehrfacher Hinsicht nachteilig. Die Herstellung einer solchen Stahlhülle oder -schicht ist ziemlich teuer. Die Stahlhülle ist aufgrund der Verwendung von Stahl sehr schwer, wodurch das Gesamtgewicht des Hydrozyklons entsprechend erhöht wird. Ein solches Gewicht behindert aber die Montage und etwaige Reparaturen, bei denen der Hydrozyklon oder seine Teile ausgewechselt werden müssen. Ein schwerer Hydrozyklon verlangt stabilere bzw. stärkere Fundamente. Im Falle eines Transportes ergeben sich entsprechend höhere Transportkosten. Ist die Innenschicht nach längerer Betriebszeit abgerieben, so wird dann die äußere Stahlschicht oder -hülle von den Bestandteilen der im Hydrozyklon zu verarbeitenden Suspension sehr rasch abgetragen werden, da Stahl gegen einen hiervon verursachten Abrieb eine relative geringe Verschließfestigkeit hat.The invention initially relates to a hydrocyclone or hydrocyclone parts according to the preamble of claim 1. In known hydrocyclones or hydrocyclone parts of this type, the outer layer consisted of a steel shell and the inner layer consisted of a relatively soft polyurethane. This is disadvantageous in several ways. Such a steel shell or layer is quite expensive to manufacture. The steel shell is very heavy due to the use of steel, which increases the total weight of the hydrocyclone accordingly. However, such a weight hinders assembly and any repairs in which the hydrocyclone or its parts have to be replaced. A heavy hydrocyclone requires more stable or stronger foundations. In the case of transport, the transport costs are correspondingly higher. If the inner layer is rubbed off after a long period of operation, then the outer steel layer or shell will be removed very quickly by the constituents of the suspension to be processed in the hydrocyclone, since steel has a relatively low wear resistance against any abrasion caused thereby.

Die Aufgabe der Erfindung besteht demgegenüber darin, einen Hydrozyklon, bzw. Hydrozyklonteile gemäß dem Oberbegriff des Anspruches 1 dahingehend zu verbessern, daß zum einen die Herstellungskosten und das Gewicht verringert, zum anderen aber die Verschleißfestigkeit insgesamt erhöht wird.In contrast, the object of the invention is to improve a hydrocyclone or hydrocyclone parts according to the preamble of claim 1 in such a way that on the one hand the production costs and the weight are reduced, but on the other hand the overall wear resistance is increased.

Die Lösung dieser Aufgabe wird, ausgehend von Oberbegriff des Anspruches 1, zunächst in den Merkmalen des Kennzeichens des Anspruches 1 gesehen. Hierdurch reduzieren sich die Herstellungskosten der Außenschicht erheblich. Zugleich wird ihr Gewicht, bezogen auf einen Hydrozyklon, bzw. Hydrozyklonteile gemäß dem Stand der Technik und gleiche Außenabmessungen, erheblich reduziert. Ist nach entsprechender Betriebsdauer an dieser oder jener Stelle die Innenschicht durch die Suspension verschlissen, bzw. abgetragen, so hat die erfindungsgemäß vorgesehene Außenschicht aus relativ hartem Polyurethan gegenüber der Suspension eine wesentlich höhere Verschleißfestigkeit als Stahl. Dies verlängert die Lebensdauer eines solchen Hydrozyklons entsprechend. Mit der Erfindung wird also der überraschende Effekt erreicht, daß die zuletzt genannte Verbesserung in der Funktion zusammen mit einer Reduzierung der Herstellungskosten erreicht wird, während in der Regel funktionelle Verbesserungen eines Gegenstandes mit entsprechenden Mehraufwendungen in der Fertigung erkauft werden müssen.The solution to this problem, starting from the preamble of claim 1, is first seen in the features of the characterizing part of claim 1. This significantly reduces the manufacturing costs of the outer layer. At the same time, their weight, based on a hydrocyclone or hydrocyclone parts according to the prior art and the same external dimensions, is considerably reduced. If, after a corresponding period of operation, the inner layer is worn or worn away by the suspension at this or that point, the outer layer of relatively hard polyurethane provided according to the invention has a considerably higher wear resistance than steel. This extends the life of such a hydrocyclone accordingly. With the invention, therefore, the surprising effect is achieved that the last-mentioned improvement in function is achieved together with a reduction in production costs, while functional improvements of an object with corresponding additional expenditure in production have to be bought as a rule.

Eine bevorzugte Ausführungsform der Erfindung ist Gegenstand des Anspruches 2. Ein solcher Gießverbund beider Schichten miteinander bewirkt eine innige Haftung zwischen Innenschicht und Außenschicht, die beim erläuterten Stand der Technik nicht gegeben ist. Hierdurch ergibt sich eine größere Stabilität des Hydrozyklons, bzw. Hydrozyklonteiles und in solchen Fällen, in denen bereits ein Teil der Innenschicht verschlissen wurde, trotzdem noch einen hinreichenden Halt des verbleibenden Teiles der Innenschicht an der Außenschicht.A preferred embodiment of the invention is the subject of claim 2. Such a cast composite of the two layers with one another brings about an intimate adhesion between the inner layer and the outer layer, as in the state explained the technology is not given. This results in greater stability of the hydrocyclone or hydrocyclone part and, in those cases in which a part of the inner layer has already been worn out, there is still sufficient hold of the remaining part of the inner layer on the outer layer.

Die Merkmale des Anspruches 3 geben die Möglichkeit, nach einem ganz oder teilweisen Verschleiß der Innenschicht diese in relativ einfacher Weise, z. B. durch Aufstoßen oder Klopfen mit einem Hammer, von der Außenschicht zu lösen. Danach kann eine in der Fabrik hergestellte neue Innenschicht in die noch vorhandene Außenschicht wieder eingesetzt werden.The features of claim 3 give the possibility, after a complete or partial wear of the inner layer, in a relatively simple manner, for. B. by belching or tapping with a hammer to detach from the outer layer. A new inner layer manufactured in the factory can then be reinserted into the existing outer layer.

Eine bevorzugte kombinierte Anwendung Merkmale des Anspruches 2 einerseits und der Merkmale des Anspruches 3 andererseits ist Inhalt des Anspruches 4, der gegebenenfalls noch durch Anspruch 5 ergänzt sein kann. Hiermit ist der feste, die Stabilität erhöhende Zusammenhalt durch den Gießverbund auf den durch den Zulauf entsprechend beanspruchten oberen Teil beschränkt, während der besonders dem Verschleiß ausgesetzte untere Bereich (Unterteil, bzw. Mittelteil und Unterteil) die schnelle und leichte Auswechselbarkeit einer verschlissenen Innenschicht ermöglicht.A preferred combined use of features of claim 2 on the one hand and the features of claim 3 on the other hand is the content of claim 4, which can optionally be supplemented by claim 5. This means that the solid, stability-enhancing cohesion due to the cast compound is limited to the upper part, which is correspondingly stressed by the inflow, while the lower area (lower part, or middle part and lower part), which is particularly exposed to wear, enables quick and easy replaceability of a worn inner layer.

Die Merkmale der Ansprüche 6 and 7 stellen bevorzugte Härte-Angaben der für die Außenschicht und die Innenschicht verwendete Polyurethane dar.The features of claims 6 and 7 represent preferred hardness information of the polyurethanes used for the outer layer and the inner layer.

Mit der Erfindung sollen ferner vorteilhafte Verfahren zur Herstellung solcher Hydrozyklone, bzw. Hydrozyklonteile geschaffen werden. Hierzu sieht die Erfindung zunächst den Anspruch 8 vor. Dies hat den Vorteil, daß der Werkstoff der inneren Schicht nicht zweimal wärmebehandelt werden muß. Eine wiederholte Wärmebehandlung könnte nämlich bei manchen Polyurethanen dazu führen, daß hierunter ihre Verschleißfestigkeit leidet. Dafür müssen bei dieser Variante der Erfindung etwas größere Formkosten für das Gießen der äußeren Schicht in Kauf genommen werden.The invention is also intended to provide advantageous methods for producing such hydrocyclones or hydrocyclone parts. To this end, the invention first provides claim 8. This has the advantage that the material of the inner layer does not have to be heat-treated twice. Repeated heat treatment could cause some of the polyurethanes to suffer from their wear resistance. For this variant of the invention, somewhat larger molding costs for casting the outer layer have to be accepted.

Demgegenüber gibt der Verfahrensanspruch 9 die Möglichkeit, unter Reduzierung der Formkosten die Außenschicht um die Innenschicht herumzugießen. Das hierzu angegebene Polyäther-Polyurethan verträgt auch ohne Einbuße der Verschleißfestigkeit die zweite Wärmebehandlung in Form des Temperns. Ein solches Polyäther-Polyurethan wird beispielsweise von der Firma DUPONT hergestellt und von der Firma UNIROYAL unter dem Kennzeichen L 42 vertrieben.In contrast, the method claim 9 gives the possibility of casting the outer layer around the inner layer while reducing the molding costs. The polyether polyurethane specified for this can withstand the second heat treatment in the form of annealing even without sacrificing wear resistance. Such a polyether polyurethane is manufactured, for example, by DUPONT and sold by UNIROYAL under the label L 42.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und nachstehend beschrieben. In der Zeichnung zeigt:

  • Fig. 1: einen Längsschnitt durch einen aus Unterteil, Mittelteil und Oberteil zusammengesetzten Hydrozyklon,
  • Fig. 2: einen Schnitt gemäß der Linie II-II in Fig. 1.
An embodiment of the invention is shown in the drawing and described below. The drawing shows:
  • 1 shows a longitudinal section through a hydrocyclone composed of a lower part, middle part and upper part,
  • 2 shows a section along the line II-II in Fig. 1st

Der Hydrozyklon nach der Erfindung besteht im Prinzip aus drei Teilen, nämlich dem unteren Teil 1, dem mittleren Teil 2 und dem oberen Teil 3. Der untere Teil 1 bildet den Austrag 4 für die schwere, bzw. grobe Fraktion. Der Mittelteil 2 bildet den Bereich 5, in dem im wesentlichen durch den Hydrozykloneffekt die feine, bzw. leichte Fraktion der Suspension von der groben bzw. schweren Fraktion getrennt wird. Der obere Teil 3 enthält den Suspensionszulauf 6 und den Öberlauf 10 der feinen, bzw. leichteren Fraktion. Die vorgenannten Funktionen eines Hydrozyklones sind bekannt.The hydrocyclone according to the invention basically consists of three parts, namely the lower part 1, the middle part 2 and the upper part 3. The lower part 1 forms the discharge 4 for the heavy or coarse fraction. The middle part 2 forms the area 5, in which the fine or light fraction of the suspension is separated from the coarse or heavy fraction essentially by the hydrocyclone effect. The upper part 3 contains the suspension inlet 6 and the overflow 10 of the fine or lighter fraction. The aforementioned functions of a hydrocyclone are known.

Gemäß der Erfindung bestehen die Teile sofern sie eine tragende Funktion haben, aus einer durchweg mit 7 bezifferten Außenschicht aus einem relativ harten Polyurethan, das somit die Tragfunktion übernehmen kann, und einer demgegenüber weicheren, sehr verschleißfesten Innenschicht 8 aus einem entsprechend weicheren Polyurethan. In einer bevorzugten Ausführung der Erfindung ist die shore-Härte der Außenschichten 7 im Bereich von 95 bis 105 Shore gelegen, während die Shore-Härte der Innenschichten 8 bevorzugt 75 bis 85 Shore A beträgt.According to the invention, the parts, if they have a load-bearing function, consist of an outer layer, consistently numbered 7, made of a relatively hard polyurethane, which can thus take over the load-bearing function, and a softer, very wear-resistant inner layer 8 made of a correspondingly softer polyurethane. In a preferred embodiment of the invention, the shore hardness of the outer layers 7 is in the range from 95 to 105 Shore, while the Shore hardness of the inner layers 8 is preferably 75 to 85 Shore A.

Die Schichten 7, 8 sind an ihrer Berührungsfläche 9 bevorzugt durch einen Gießverbund miteinander verbunden und aneinander gehalten. Es kann aber auch so vorgegangen werden, daß nach dem Gießen einer dieser beiden Schichten auf deren zur Anlage an die Gegenfläche der zweiten Schicht bestimmten Fläche eine dünne Silikonschicht 11 aufgetragen, bevorzugt aufgesprüht wird. Damit kann nach entsprechendem Verschleiß die Innenschicht leicht von der Außenschicht gelöst und durch eine andere Innenschicht ersetzt werden. Im vorliegenden Ausführungsbeispiel empfiehlt es sich, im Oberteil 3 Außen- und Innenschicht durch einen Gießverbund fest aneinander zu halten, dagegen beim Mittel teil 2 und Unterteil 1 zwischen Außen- und Innenschicht die vorgenannte Silikonschicht vorzusehen, da dort der größte Verschleiß zu erwarten ist. Diese Silikonschicht ist in der Zeichnung lediglich durch die Ziff. 11 und die zugehörige Trennlinie zwischen den inneren und äußeren Schichten der Hydrozyklonteile 2 und 1 angedeutet.The layers 7, 8 are preferably connected to one another at their contact surface 9 by a casting compound and held together. However, it can also be done in such a way that after casting one of these two layers, a thin silicone layer 11 is applied, preferably sprayed, onto the surface intended for bearing against the counter surface of the second layer. After appropriate wear, the inner layer can thus be easily detached from the outer layer and replaced by another inner layer. In the present exemplary embodiment, it is advisable to hold the outer and inner layers firmly together in the upper part 3 by means of a casting compound, but in contrast to the middle Part 2 and lower part 1 between the outer and inner layer to provide the aforementioned silicone layer, since the greatest wear is expected there. This silicone layer is only in the drawing by the number. 11 and the associated dividing line between the inner and outer layers of the hydrocyclone parts 2 and 1 are indicated.

Man kann entweder zunächst die jeweiligen Außenschichten 7 herstellen und dann die Innenschichten 8 in diese eingießen, oder aber zunächst die Innenschicht gießen und dann, nach entsprechendem Tempern der Innenschicht, die Außenschicht um diese herumgießen. Im letztgenannten Fall ist für die Innenschicht ein Polyurethan zu wählen, das ohne Verlust an Verschleißfestigkeit die zweimalige Wärmebehandlung aushält. Hierzu ist ein Polyäther-Polyurethan von einer Shore-Härte im Bereich von 80 Shore A vorgesehen.You can either first produce the respective outer layers 7 and then pour the inner layers 8 into them, or first pour the inner layer and then, after appropriate tempering of the inner layer, pour the outer layer around it. In the latter case, a polyurethane should be selected for the inner layer that can withstand the two heat treatments without loss of wear resistance. For this purpose, a polyether polyurethane with a Shore hardness in the range of 80 Shore A is provided.

Die Erfindung ist vorstehend an dem Ausführungsbespiel eines Hydrozyklons erläutert, der aus mehreren Teilen zusammengesetzt ist. Wie bereits eingangs erwähnt, bezieht sich die Erfindung auch einen derart ausgestalteten, d.h. in sich einteiligen Hydrozyklon. Im letztgenannten Fall empfiehlt sich der o.g. Gießverbund. The invention is explained above using the exemplary embodiment of a hydrocyclone which is composed of several parts. As already mentioned at the beginning, the invention also relates to such a design, i.e. one-piece hydrocyclone. In the latter case, the above is recommended. Cast compound.

Claims (9)

1. Hydrozyklon, bzw. Hydrozyklonteile, bestehend aus einer harten, tragenden Außenschicht und einer demgegenüber weicheren, verschleißfesten Innenschicht aus Polyurethan, dadurch gekennzeichnet, daß die Außenschicht (7) aus einem relativ harten Polyurethan besteht.1. Hydrocyclone or hydrocyclone parts, consisting of a hard, load-bearing outer layer and a softer, wear-resistant inner layer made of polyurethane, characterized in that the outer layer (7) consists of a relatively hard polyurethane. 2. Hydrozyklon, bzw. Hydrozyklonteile nach Anspruch 1, dadurch gekennzeichnet, daß die Außenschicht (7) und die Innenschicht (8) an ihren gemeinsamen Übergangs- bzw. Berührungsflächen (9) miteinander in einem Gießverbund stehen.2. Hydrocyclone or hydrocyclone parts according to claim 1, characterized in that the outer layer (7) and the inner layer (8) are at their common transition or contact surfaces (9) with each other in a casting composite. 3. Hydrozyklon, bzw. Hydrozyklonteile nach Anspruch 1, dadurch gekennzeichnet, daß zwischen Außenschicht (7) und Innenschicht (8) eine Silikonschicht (11) vorgesehen ist.3. Hydrocyclone or hydrocyclone parts according to claim 1, characterized in that a silicone layer (11) is provided between the outer layer (7) and the inner layer (8). 4. Hydrozyklon, bzw. Hydrozyklonteile nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß bei einem aus mehreren Teilen zusammengesetzten Hydrozyklon bei dessen oberen, den Suspensionszulauf (6) und den Überlauf (10) aufweisenden Teil (3) zwischen Außen schicht (7) und Innenschicht (8) ein Gießverbund miteinander vorhanden ist, während beim übrigen Bereich des Hydrozyklons, in dem die Trennung der Fraktionen und der Austrag der schweren bzw. groben Fraktion erfolgt, zwischen Außenschicht (7) und Innenschicht (8) die Silikonschicht (11) vorgesehen ist.4. Hydrocyclone or hydrocyclone parts according to one of claims 1 to 3, characterized in that in the case of a hydrocyclone composed of several parts in its upper part, the suspension inlet (6) and the overflow (10) having part (3) between the outside layer (7) and inner layer (8) a casting compound is present with each other, while in the remaining area of the hydrocyclone, in which the fractions are separated and the heavy or coarse fraction is discharged, between the outer layer (7) and inner layer (8) Silicone layer (11) is provided. 5. Hydrozyklon, bzw. Hydrozyklonteile nach Anspruch 4, dadurch gekennzeichnet, daß der übrige Bereich des Hydrozylkons aus einem Mittelteil (2) und einem Unterteil (1) besteht.5. Hydrocyclone or hydrocyclone parts according to claim 4, characterized in that the remaining area of the hydrocyclone consists of a central part (2) and a lower part (1). 6. Hydrozyklon, bzw. Hydrozyklonteile nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Shore-Härte der Außenschicht 95 - 105 Shore A beträgt.6. Hydrocyclone or hydrocyclone parts according to one of claims 1 to 5, characterized in that the Shore hardness of the outer layer is 95-105 Shore A. 7. Hydrozyklon, bzw. Hydrozyklonteile nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Shore-Härte der Innenschicht 75 - 85 Shore A beträgt.7. Hydrocyclone or hydrocyclone parts according to one of claims 1 to 6, characterized in that the Shore hardness of the inner layer is 75-85 Shore A. 8. Verfahren zur Herstellung eines Hydrozyklons, bzw. von Hydrozyklonteilen nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß zunächst die äußere tragende Schicht (7) angefertigt und dann der Werkstoff der inneren, weicheren Schicht (8) in die äußere Schicht eingegossen und zur Aushärtung gebracht wird.8. A method for producing a hydrocyclone or hydrocyclone parts according to one of claims 1 to 7, characterized in that first the outer load-bearing layer (7) is made and then the material of the inner, softer layer (8) is poured into the outer layer and is hardened. 9. Verfahren zur Herstellung eines Hydrozyklons, bzw. von Hydrozyklonteilen nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß zunächst die innere, weichere Schicht (8) aus einem Polyäther- Polyurethan mit einer Shore-Härte im Bereich um 80 Shore A gegossen wird, daß anschließend eine Erwärmung (Temperung) dieser inneren Schicht und dann deren Umgießen mit der Außenschicht aus dem härteren Polyurethan erfolgt.9. A method for producing a hydrocyclone or hydrocyclone parts according to one of claims 1 to 7, characterized in that first the inner, softer layer (8) made of a polyether Polyurethane with a Shore hardness in the range of around 80 Shore A is poured, that this inner layer is then heated (tempered) and then cast around it with the outer layer made of the harder polyurethane.
EP87115828A 1986-10-29 1987-10-28 Hydrocyclone, or hydrocyclone parts, and methods for manufacturing them Expired - Lifetime EP0266669B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87115828T ATE55071T1 (en) 1986-10-29 1987-10-28 HYDROCYCLONE, RESP. HYDROCYCLONE PARTS AND PROCESS FOR THEIR MANUFACTURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3636734 1986-10-29
DE3636734 1986-10-29

Publications (2)

Publication Number Publication Date
EP0266669A1 true EP0266669A1 (en) 1988-05-11
EP0266669B1 EP0266669B1 (en) 1990-08-01

Family

ID=6312690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115828A Expired - Lifetime EP0266669B1 (en) 1986-10-29 1987-10-28 Hydrocyclone, or hydrocyclone parts, and methods for manufacturing them

Country Status (4)

Country Link
EP (1) EP0266669B1 (en)
AT (1) ATE55071T1 (en)
DE (2) DE8717727U1 (en)
ES (1) ES2016960B3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994012449A2 (en) * 1992-11-20 1994-06-09 Lanxide Technology Company, Lp Novel macrocomposite bodies and methods for making the same
WO2012080032A3 (en) * 2010-12-16 2013-03-14 Voith Patent Gmbh Hydrocyclone
CN103949356A (en) * 2014-05-19 2014-07-30 云南磷化集团有限公司 Tube-cone connected body hydrocyclone without traditional overflow pipe
WO2018072909A1 (en) * 2016-10-21 2018-04-26 Gema Switzerland Gmbh Cyclone separator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29501148U1 (en) * 1995-01-25 1995-07-20 Bielefeldt, Ernst-August, 24582 Bordesholm Centrifugal separation device
DE19502202A1 (en) * 1995-01-25 1996-08-22 Ernst August Bielefeldt Process and device for centrifugal separation
DE10235743A1 (en) * 2002-08-05 2004-02-19 Mann + Hummel Gmbh Cyclone separator e.g. as oil separator has one piece upper housing part comprising base body and cover with gas outlet and connected to lower housing part
RU2645503C1 (en) * 2016-12-01 2018-02-21 Федеральное государственное бюджетное научное учреждение "Федеральный исследовательский центр "Красноярский научный центр Сибирского отделения Российской академии наук" (ФИЦ КНЦ СО РАН, КНЦ СО РАН) Rubber polymer material for internal filling of hydrocyclones

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1704381A1 (en) * 1968-02-28 1971-06-16 Thermovox Gmbh Rotational casting process and device for the production of hollow bodies and open molded parts from plastics, and containers and molded parts produced in this way
DE2361556A1 (en) * 1973-12-11 1975-06-12 Kerren Kunststofftechnik Hydro-cyclone in cylindrical envelope - has container made of two layers of different quality synthetic materials
FR2282296A1 (en) * 1974-08-19 1976-03-19 Pioneer Centrifuging Co CYCLONE GASKET
US4053393A (en) * 1975-11-19 1977-10-11 Picenco International, Inc. Cyclone assembly
DE3240723A1 (en) * 1982-11-04 1984-05-10 Elteka Kunststoff-Technik Gmbh, 7950 Biberach Hydrocyclone

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1704381A1 (en) * 1968-02-28 1971-06-16 Thermovox Gmbh Rotational casting process and device for the production of hollow bodies and open molded parts from plastics, and containers and molded parts produced in this way
DE2361556A1 (en) * 1973-12-11 1975-06-12 Kerren Kunststofftechnik Hydro-cyclone in cylindrical envelope - has container made of two layers of different quality synthetic materials
FR2282296A1 (en) * 1974-08-19 1976-03-19 Pioneer Centrifuging Co CYCLONE GASKET
US4053393A (en) * 1975-11-19 1977-10-11 Picenco International, Inc. Cyclone assembly
DE3240723A1 (en) * 1982-11-04 1984-05-10 Elteka Kunststoff-Technik Gmbh, 7950 Biberach Hydrocyclone

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, 85-322432/51, Woche 8551, 14. Januar 1986, Derwent Publications LTD, London, GB; & SU-A-635 193 (CELLULOSE EQUIP RES) 15-06-1985 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994012449A2 (en) * 1992-11-20 1994-06-09 Lanxide Technology Company, Lp Novel macrocomposite bodies and methods for making the same
WO1994012449A3 (en) * 1992-11-20 1994-08-18 Lanxide Technology Co Ltd Novel macrocomposite bodies and methods for making the same
WO2012080032A3 (en) * 2010-12-16 2013-03-14 Voith Patent Gmbh Hydrocyclone
CN103949356A (en) * 2014-05-19 2014-07-30 云南磷化集团有限公司 Tube-cone connected body hydrocyclone without traditional overflow pipe
WO2018072909A1 (en) * 2016-10-21 2018-04-26 Gema Switzerland Gmbh Cyclone separator

Also Published As

Publication number Publication date
ATE55071T1 (en) 1990-08-15
EP0266669B1 (en) 1990-08-01
DE3764065D1 (en) 1990-09-06
DE8717727U1 (en) 1990-02-15
ES2016960B3 (en) 1990-12-16

Similar Documents

Publication Publication Date Title
EP0292795B1 (en) Hollow shaft with driving elements affixed by means of expansion and with axially differing material properties
EP0266669A1 (en) Hydrocyclone, or hydrocyclone parts, and methods for manufacturing them
EP1151145A1 (en) Plain bearing
DE4237655B4 (en) brake disc
DE4424203C2 (en) Grinding wheel for grinding the edge of spectacle lenses
EP3128179A1 (en) Compressor impeller with undulating wheel backs
EP0111048B1 (en) Roller for tracked vehicle running gear
DE2146153C3 (en) Cylinder liner for an internal combustion engine
DE60115832T2 (en) railway wheel
DE3736472C2 (en)
DE2831214C2 (en) Roller for a sugar cane mill
EP1592895B1 (en) Slide block for articulated spindles
DE102010014044A1 (en) Segment for saw chain of high-speed power saws for sawing e.g. rock, has cutting segment supported in recess and interchanged according to wear, where cutting segment is broader than segment of saw chain
DE8224280U1 (en) MOLDED JOINT HEAD FOR DRIVE SHAFT
DE102007001819B4 (en) Abrollflächenelement
DE636859C (en) Sliding door roller with a sound-absorbing intermediate layer designed as a ring
AT520309B1 (en) gear
DE1275568B (en) Rail wheel
DE2730108A1 (en) Composite camshaft mfr. - where white cast iron ring disks are cast onto prefabricated iron or steel shaft
DE2841523A1 (en) Tool set for suction dredgers - where steel adaptor plug fits in blind hole in rear end of steel tooth and is retained by wedge
DE932289C (en) Strainer rod for presses, especially screw presses
DE595093C (en) Lubricating bushing wheel set with transversely split axle for pits and small railways
DE386941C (en) ball-bearing
AT75215B (en) Lubricator wheel set for mine cars and the like.
DE3614127A1 (en) Wheel for manually movable vehicles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19881020

17Q First examination report despatched

Effective date: 19890228

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19900801

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19900801

Ref country code: FR

Effective date: 19900801

REF Corresponds to:

Ref document number: 55071

Country of ref document: AT

Date of ref document: 19900815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3764065

Country of ref document: DE

Date of ref document: 19900906

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19931020

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19931029

Year of fee payment: 7

Ref country code: GB

Payment date: 19931029

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19941028

Ref country code: AT

Effective date: 19941028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 19941029

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941028

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971010

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990803

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991007