EP0516952A1 - Wear-resistant roller to be used in roller crushers, in particular high-pressure roller crushers - Google Patents

Wear-resistant roller to be used in roller crushers, in particular high-pressure roller crushers Download PDF

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Publication number
EP0516952A1
EP0516952A1 EP92106594A EP92106594A EP0516952A1 EP 0516952 A1 EP0516952 A1 EP 0516952A1 EP 92106594 A EP92106594 A EP 92106594A EP 92106594 A EP92106594 A EP 92106594A EP 0516952 A1 EP0516952 A1 EP 0516952A1
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EP
European Patent Office
Prior art keywords
wear
roller
pieces
grinding roller
embedded
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Granted
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EP92106594A
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German (de)
French (fr)
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EP0516952B1 (en
Inventor
Gustav Buchholz
Günter Keller
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Kloeckner Humboldt Deutz AG
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Kloeckner Humboldt Deutz AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers

Definitions

  • the invention relates to a wear-resistant grinding roller for use in roller machines, in particular in high-pressure roller presses for pressure reduction of granular material.
  • the invention is based on the object of designing a grinding roller of the type required in the preamble of claim 1 in such a way that an extremely high resistance to wear can be achieved. This object is achieved according to the invention with the measures of the characterizing part of claim 1. Advantageous refinements are specified in the subclaims.
  • Characteristic of the inventive design, which minimizes wear, of the surface areas of the grinding roller exposed to wear is the incorporation of a large number of pin-shaped and / or plate-shaped material pieces into these areas, the material pieces having a significantly greater hardness than the material of the grinding roller surrounding these material pieces.
  • the storage of the material pieces in the roller body takes place in correspondingly designed recesses of the roller body according to the invention by gluing or pressing. In this way, a firm connection is made between the brittle, hard pieces of material and the roller body, which is retained due to the elastic nature of the roller body when subjected to external loads. According to the invention, however, it is also possible to achieve a firm connection between the material pieces and the roller body by another method, such as shrinking, soldering, welding or screwing.
  • the area of the grinding roller which is exposed to wear is designed as a bandage ring which is detachably connected to the roller body by shrinking on.
  • the pieces of material to be stored can, according to the invention, be stored in the bandage before the bandage is shrunk on, so that after shrinking on the bandage being pulled together, a particularly tight fit of the stored material pieces is achieved.
  • Another embodiment of the invention is the formation of the wear layer in the area of the grinding roller surface in the form of roller segments detachably connected to the roller body.
  • the material pieces in the individual roller segments which is easier to carry out in terms of production technology, compared to the storage in bath rings or in the roller body, it is also possible according to the invention to cast in the material pieces to be stored as soon as the segments are cast and thus to establish a positive connection between the segment base body and the stored material pieces .
  • the material pieces embedded in the roller body are sleeve-shaped.
  • the cavity inside the sleeves can be filled with good material, whereby an autogenous wear protection is brought about at these points.
  • the size of the sleeves is such that the good material remains in the sleeves during the entire rotation of the rollers.
  • the storage of hard pieces of material in surface areas that are subject to high wear and tear can also be used according to the invention in other devices that are crushed or compacted at high pressure, for example roller mills, pan mills, roller compacting presses.
  • Fig. 1 shows a two-roll machine, for. B. a high-pressure roller press for crushing granular material, which is fed from above via a feed hopper, not shown in the drawing, the roller gap (15) between the two grinding rollers (10, 11).
  • a feed hopper not shown in the drawing
  • the roller gap 15 between the two grinding rollers (10, 11).
  • a large number of plate-shaped (12) and pin-shaped (13) formed wear-resistant material pieces are embedded.
  • the inclusions are flush with the roller jacket surface (14). Furthermore, it can be seen from the exemplary embodiment which is shown in FIGS. 1, 2 and 3 that the areas of the roller end faces (16) which are exposed to wear are also protected by appropriate inclusions - in the example shown by plate-shaped inclusions (12, 17) will.
  • FIGS. 1 to 3 The arrangement of plate-shaped and pin-shaped material pieces shown in FIGS. 1 to 3, as well as the dimensions of the individual material pieces and the distances of the material pieces from one another, are only one example of a possible embodiment of the embedding Combinations of pin-shaped and plate-shaped pieces of material with variable dimensions and with variable distances from each other in the outer surface of the grinding roller and in the end face of the grinding roller and firmly connected to them by gluing, pressing, soldering, welding, shrinking, etc.
  • sleeve-shaped material pieces (18) are embedded in the lateral surface of the roller body, which during operation of the roller machine, for. B. in the material bed shredding with a high-pressure roller press, with material (19).
  • plate-shaped material pieces (12) are embedded in the roller end faces (16) of the grinding roller.
  • the truncated cone outer surface (22) advantageously prevents lateral forces which can act on the protruding parts during operation of the grinding roller lead to undesirable torques and thus to a break-off of the protruding parts of the pin-shaped material pieces.
  • the protruding part may also be hemispherical at its upper end.
  • the spaces between the protruding pin-shaped material pieces (13) can be up to the upper edge (21) of the pin-shaped material pieces (13) with another material (20) - this can be, for example, a ceramic mass or, for example, one with ceramic materials Trade plastic - be filled so that a closed roll surface (14) is obtained.
  • the gaps can also initially remain free, so that they are only when the roller machine, z. B. when performing the material bed comminution of granular material, fill with material and thus form a closed roll surface (14).

Abstract

In order to construct grinding rollers of rolling machines, in particular of high-pressure roller presses, for the pressure crushing of granular material in such a way that the surface regions of the grinding roller that are exposed to wear have an extremely high resistance to wear, according to the invention a multiplicity of wear-resistant material pieces are inserted into these surface regions in such a way that the wear response of the grinding roller at these points is determined virtually exclusively by the wear-resistant material inserted. By varying the size and number of pieces as well as the material properties of the material pieces inserted, it is possible for the wear of the grinding roller to be matched to the substances that are to be crushed in different ways, and to minimise said wear. In particular it is possible to ensure by pinpointed local insertion that previously preferred points of wear on the grinding roller are particularly protected against wear, and thus the wear pattern of the grinding roller remains uniform even over lengthy periods of use. <IMAGE>

Description

Die Erfindung betrifft eine verschleißfeste Mahlwalze für die Verwendung in Walzenmaschinen, insbesondere in Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes.The invention relates to a wear-resistant grinding roller for use in roller machines, in particular in high-pressure roller presses for pressure reduction of granular material.

Bei Walzenbrecher und Walzenmühlen wird körniges, sprödes Mahlgut in den Walzenspalt, durch den die beiden drehbar gelagerten, gegenläufig rotierbaren Mahlwalzen voneinander getrennt sind, eingezogen und dort einer Druckzerkleinerung unterworfen.In the case of roller crushers and roller mills, granular, brittle regrind is drawn into the nip, through which the two rotatably mounted, counter-rotating grinding rollers are separated from one another and subjected to pressure reduction there.

Bekannt ist auch die sogenannte Gutbettzerkleinerung im Walzenspalt einer Hochdruck-Walzenpresse, bei der die einzelnen Partikel des eingezogenen Mahlgutes in einem Gutbett, d. h. in einer zwischen den beiden Walzenoberflächen zusammengedrückten Materialschüttung bei Anwendung eines extrem hohen Druckes gegenseitig zerkleinert werden (EP-PS 0 084 383). Dabei sind die Walzenoberflächen einer außerordentlich hohen Beanspruchung ausgesetzt, woraus u. a. ein hoher Verschleiß resultiert. Es ist bekannt, durch unterschiedliche Gestaltung und Beschichtung der dem Verschleiß ausgesetzten Walzenoberflächen diesem Verschleiß entgegen zu wirken. So werden in der EP-OS 0 361 172 auf den Walzengrundkörper durch Schweißen verschiedene Schichten aus unterschiedlichen Legierungen zum Verschleißschutz aufgetragen.Also known is the so-called material bed comminution in the nip of a high-pressure roller press, in which the individual particles of the ground material drawn in are in a material bed, ie in a material bed compressed between the two roller surfaces when used an extremely high pressure are mutually crushed (EP-PS 0 084 383). The roller surfaces are exposed to extremely high loads, which results in high wear. It is known to counteract this wear by different design and coating of the roller surfaces exposed to wear. In EP-OS 0 361 172, various layers of different alloys for wear protection are applied to the base body by welding.

Der Erfindung liegt nun die Aufgabe zugrunde, eine Mahlwalze der im Oberbegriff des Anspruchs 1 vorausgesetzten Art so auszubilden, daß ein extrem hoher Widerstand gegenüber Verschleiß erzielbar ist. Diese Aufgabe wird gemäß der Erfindung mit den Maßnahmen des Kennzeichnungsteils des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.The invention is based on the object of designing a grinding roller of the type required in the preamble of claim 1 in such a way that an extremely high resistance to wear can be achieved. This object is achieved according to the invention with the measures of the characterizing part of claim 1. Advantageous refinements are specified in the subclaims.

Charakteristisch für die erfindungsgemäße, den Verschleiß minimierende Ausgestaltung der dem Verschleiß ausgesetzten Oberflächenbereiche der Mahlwalze ist das Einlagern einer Vielzahl von stift- und/oder plattenförmigen Werkstoffstücken in diese Bereiche, wobei die Werkstoffstücke eine deutlich größere Härte aufweisen als das diese Werkstoffstücke umgebende Material der Mahlwalze. Durch die Einlagerung größerer Werkstoffstücke mit geringen Abständen voneinander wird erreicht, daß das Verschleißverhalten der Mahlwalze fast ausschließlich nur noch durch das eingelagerte Material bestimmt ist.Characteristic of the inventive design, which minimizes wear, of the surface areas of the grinding roller exposed to wear is the incorporation of a large number of pin-shaped and / or plate-shaped material pieces into these areas, the material pieces having a significantly greater hardness than the material of the grinding roller surrounding these material pieces. By storing larger pieces of material with small distances from each other it is achieved that the wear behavior of the grinding roller is almost exclusively determined only by the stored material.

Durch das erfindungsgemäße Verfahren kann somit durch die Einlagerung auch besonders spröder aber harter Werkstoffstücke in den Werkstoff der Mahlwalze der hohe Verschleißwiderstand dieser spröden Stoffe weitgehend genutzt werden. Andere Wege dieser Nutzung z. B. die Fertigung einer Mahlwalze ausschließlich aus diesen spröden Werkstoffen scheiden meist wegen der zu aufwendigen Fertigung und wegen Schwierigkeiten bei der Verarbeitung, insbesondere bei Mahlwalzen für die Gutbettzerkleinerung aus.Through the method according to the invention, particularly brittle but hard pieces of material can also be stored the high wear resistance of these brittle materials is largely used in the material of the grinding roller. Other ways of using this z. B. the manufacture of a grinding roller exclusively from these brittle materials mostly because of the costly production and because of difficulties in processing, especially from grinding rollers for material bed comminution.

Die Einlagerung der Werkstoffstücke in den Walzenkörper erfolgt in entsprechend ausgebildete Ausnehmungen des Walzenkörpers erfindungsgemäß durch Kleben oder Einpressen. Auf diese Weise wird zwischen den spröden, harten Werkstoffstücken und dem Walzenkörper eine feste Verbindung hergestellt, die aufgrund der elastischen Beschaffenheit des Walzenkörpers bei Belastungen von außen erhalten bleibt. Erfindungsgemäß ist es aber auch möglich, eine feste Verbindung zwischen den Werkstoffstücken und dem Walzenkörper durch ein anderes Verfahren herbeizuführen wie beispielsweise Schrumpfen, Löten, Schweißen oder Schrauben.The storage of the material pieces in the roller body takes place in correspondingly designed recesses of the roller body according to the invention by gluing or pressing. In this way, a firm connection is made between the brittle, hard pieces of material and the roller body, which is retained due to the elastic nature of the roller body when subjected to external loads. According to the invention, however, it is also possible to achieve a firm connection between the material pieces and the roller body by another method, such as shrinking, soldering, welding or screwing.

In vorteilhafter Ausgestaltung der Erfindung ist der dem Verschleiß ausgesetzte Bereich der Mahlwalze als Bandagenring ausgebildet, der mit dem Walzenkörper durch Aufschrumpfen lösbar verbunden ist. Bei zueinander passenden thermischen Ausdehnungsquozienten des Bandagenwerkstoffes und der einzulagernden Werkstoffe können erfindungsgemäß die einzulagernden Werkstoffstücke bereits vor dem Aufschrumpfen der Bandage in die Bandage eingelagert werden, so daß nach dem Aufschrumpfen durch das Zusammenziehen der Bandage ein besonders fester Sitz der eingelagerten Werkstoffstücke erreicht wird.In an advantageous embodiment of the invention, the area of the grinding roller which is exposed to wear is designed as a bandage ring which is detachably connected to the roller body by shrinking on. With matching thermal expansion coefficients of the bandage material and the materials to be stored, the pieces of material to be stored can, according to the invention, be stored in the bandage before the bandage is shrunk on, so that after shrinking on the bandage being pulled together, a particularly tight fit of the stored material pieces is achieved.

Eine andere Ausführungsform der Erfindung ist die Ausbildung der Verschleißschicht im Bereich der Mahlwalzenoberfläche in Form von lösbar mit dem Walzenkörper verbundenen Walzensegmenten. Neben der fertigungstechnischen einfacher durchzuführenden Einlagerung der Werkstoffstücke in die einzelnen Walzensegmente gegenüber der Einlagerung in Badagenringe oder in den Walzenkörper ist es erfindungsgemäß auch möglich, schon beim Gießen der Segmente die einzulagernden Werkstoffstücke mit einzugießen und so eine formschlüssige Verbindung zwischen dem Segmentgrundkörper und den eingelagerten Werkstoffstücken herzustellen.Another embodiment of the invention is the formation of the wear layer in the area of the grinding roller surface in the form of roller segments detachably connected to the roller body. In addition to the storage of the material pieces in the individual roller segments, which is easier to carry out in terms of production technology, compared to the storage in bath rings or in the roller body, it is also possible according to the invention to cast in the material pieces to be stored as soon as the segments are cast and thus to establish a positive connection between the segment base body and the stored material pieces .

In weiterer vorteilhafter Ausgestaltung der Erfindung sind die in den Walzenkörper eingelagerten Werkstoffstücke hülsenförmig ausgebildet. Beim Betrieb der Walzenmaschine, z. B. bei Durchführung der Gutbettzerkleinerung körnigen Gutes kann sich der Hohlraum innerhalb der Hülsen mit Gutmaterial füllen, wodurch an diesen Stellen ein autogener Verschleißschutz herbeigeführt wird. Die Größe der Hülsen ist so bemessen, daß das Gutmaterial während der gesamten Umdrehung der Walzen in den Hülsen verbleibt.In a further advantageous embodiment of the invention, the material pieces embedded in the roller body are sleeve-shaped. When operating the roller machine, e.g. B. when carrying out the comminution of granular good, the cavity inside the sleeves can be filled with good material, whereby an autogenous wear protection is brought about at these points. The size of the sleeves is such that the good material remains in the sleeves during the entire rotation of the rollers.

Durch Kombination der verschiedenen Ausbildungsformen, durch Variation der Größe und Stückzahl sowie der Materialbeschaffenheit der einzulagernden Werkstoffstücke, ist es möglich, den Verschleiß der Mahlwalze den zu zerkleinernden unterschiedlichen Stoffen anzupassen und zu minimieren. Insbesondere ist es möglich, durch örtlich gezieltes Einlagern sicherzustellen, daß bisher bevorzugte Verschleißstellen der Mahlwalze bevorzugt gegenüber Verschleiß geschützt sind und das Verschleißbild der Mahlwalze auch über längere Gebrauchszeiten hinweg einheitlich bleibt.By combining the various training forms, by varying the size and number of pieces and the material properties of the material pieces to be stored, it is possible to adapt and minimize the wear of the grinding roller to the different materials to be shredded. In particular, it is possible to ensure by locally targeted storage that previously preferred wear points of the grinding roller are preferred over Wear are protected and the wear pattern of the grinding roller remains uniform even over longer periods of use.

Die Einlagerung harter Werstoffstücke in Oberflächenbereiche, die durch hohen Verschleiß beansprucht sind, kann auch bei anderen, mit hohem Druck zerkleinernde oder kompaktierende Vorrichtungen, beispielsweise Wälzmühlen, Kollergänge, Walzenkompaktierpressen, erfindungsgemäß angewendet werden.The storage of hard pieces of material in surface areas that are subject to high wear and tear can also be used according to the invention in other devices that are crushed or compacted at high pressure, for example roller mills, pan mills, roller compacting presses.

Einige Ausführungsbeispiele der Erfindung werden nachfolgend anhand der in den Figuren schematisch dargestellten Zeichnungen näher erläutert.Some exemplary embodiments of the invention are explained in more detail below with reference to the drawings shown schematically in the figures.

Es zeigt:

Fig. 1
eine Draufsicht auf die beiden Mahlwalzen einer Zweiwalzenmaschine mit einer ersten Ausführungsform der erfindungsgemäßen Einlagerung von verschleißfesten Werkstoffstücken ( für eine Walze teilweise eingezeichnet);
Fig. 2
einen Teilschnitt einer Mahlwalze parallel zur Walzenachse gemäß Fig. 1;
Fig. 3
eine Teilansicht auf die Stirnseiten der beiden Mahlwalzen gemäß Fig. 1;
Fig. 4
eine Teildraufsicht auf eine Mahlwalze einer Zweiwalzenmaschine mit einer zweiten Ausführungsform der erfindungsgemäßen Einlagerung von verschleißfesten Werkstoffstücken;
Fig. 5
einen Teilschnitt einer Mahlwalze parallel zur Walzenachse gemäß Fig. 4;
Fig. 6
einen Teilschnitt einer Mahlwalze einer Zweiwalzenmaschine parallel zur Walzenachse mit einer weiteren Ausführungsform der erfindungsgemäßen Einlagerung von verschleißfesten Werkstoffstücken.
It shows:
Fig. 1
a plan view of the two grinding rolls of a two-roll machine with a first embodiment of the storage of wear-resistant material pieces according to the invention (partially drawn in for a roll);
Fig. 2
a partial section of a grinding roller parallel to the roller axis of FIG. 1;
Fig. 3
a partial view of the end faces of the two grinding rollers according to FIG. 1;
Fig. 4
a partial plan view of a grinding roller of a two-roll machine with a second embodiment of the storage of wear-resistant material pieces according to the invention;
Fig. 5
a partial section of a grinding roller parallel to the roller axis of FIG. 4;
Fig. 6
a partial section of a grinding roller of a two-roll machine parallel to the roll axis with a further embodiment of the storage of wear-resistant material pieces according to the invention.

Fig. 1 zeigt eine Zweiwalzenmaschine, z. B. eine Hochdruck-Walzenpresse zur Druckzerkleinerung körnigen Gutes, welches von oben über einen in der Zeichnung nicht dargestellten Gutaufgabeschacht dem Walzenspalt (15) zwischen den beiden Mahlwalzen (10, 11) zugeführt wird. In die Mantelfläche (14) der angetriebenen gegenläufig drehbaren Mahlwalzen (10, 11) sind eine Vielzahl von plattenförmig (12) und stiftförmig (13) ausgebildeten verschleißfeste Werkstoffstücke eingelagert.Fig. 1 shows a two-roll machine, for. B. a high-pressure roller press for crushing granular material, which is fed from above via a feed hopper, not shown in the drawing, the roller gap (15) between the two grinding rollers (10, 11). In the outer surface (14) of the driven counter-rotating grinding rollers (10, 11) a large number of plate-shaped (12) and pin-shaped (13) formed wear-resistant material pieces are embedded.

Wie die Figuren 2 und 3 zeigen, schließen die Einlagerungen mit der Walzenmanteloberfläche (14) bündig ab. Weiterhin kann dem Ausführungsbeispiel, das in den Figuren 1, 2 und 3 dargestellt ist, entnommen werden, daß auch die dem Verschleiß ausgesetzten Bereiche der Walzenstirnflächen (16) durch entsprechende Einlagerungen - im gezeigten Beispiel durch plattenförmig ausgebildete Einlagerungen (12, 17) - geschützt werden.As shown in FIGS. 2 and 3, the inclusions are flush with the roller jacket surface (14). Furthermore, it can be seen from the exemplary embodiment which is shown in FIGS. 1, 2 and 3 that the areas of the roller end faces (16) which are exposed to wear are also protected by appropriate inclusions - in the example shown by plate-shaped inclusions (12, 17) will.

Die in den Figuren 1 bis 3 dargestellte Anordnung von plattenförmig und stiftförmig ausgebildeten Werkstoffstücke sowie die Abmessungen der einzelnen Werkstoffstücke und die Abstände der Werkstoffstücke voneinander stellen nur ein Beispiel für eine mögliche Ausführung der Einlagerung dar. Es können beispielsweise auch nur stiftförmig oder nur plattenförmig oder beliebige Kombinationen von stiftförmig und plattenförmig ausgebildeten Werk-stoffstücke mit variablen Abmessungen und mit variablen Abständen voneinander in die Mantelfläche der Mahlwalze und in die Stirnfläche der Mahlwalze eingelagert und mit diesen durch Kleben, Einpressen, Löten, Schweißen, Schrumpfen etc. fest verbunden werden.The arrangement of plate-shaped and pin-shaped material pieces shown in FIGS. 1 to 3, as well as the dimensions of the individual material pieces and the distances of the material pieces from one another, are only one example of a possible embodiment of the embedding Combinations of pin-shaped and plate-shaped pieces of material with variable dimensions and with variable distances from each other in the outer surface of the grinding roller and in the end face of the grinding roller and firmly connected to them by gluing, pressing, soldering, welding, shrinking, etc.

Nach dem Ausführungsbeispiel der Figuren 4 und 5 sind in die Mantelfläche des Walzenkörpers hülsenförmig ausgebildete Werkstoffstücke (18) eingelagert, die sich beim Betrieb der Walzenmaschine, z. B. bei der Gutbettzerkleinerung mit einer Hochdruck-Walzenpresse, mit Gutmaterial (19) füllen. In den Walzenstirnflächen (16) der Mahlwalze sind bei dieser Ausführungsform plättchenförmig ausgebildete Werkstoffstücke (12) eingelagert. Es ist aber auch möglich, in die Mantelfläche des Walzenkörpers zusätzlich zu den hülsenförmig auch stift- und/oder plattenförmig ausgebildete Werkstoffstücke einzulagern.According to the embodiment of Figures 4 and 5, sleeve-shaped material pieces (18) are embedded in the lateral surface of the roller body, which during operation of the roller machine, for. B. in the material bed shredding with a high-pressure roller press, with material (19). In this embodiment, plate-shaped material pieces (12) are embedded in the roller end faces (16) of the grinding roller. However, it is also possible to incorporate in the outer surface of the roller body, in addition to the sleeve-shaped, also pin and / or plate-shaped material pieces.

Nach dem Ausführungsbeispiel der Fig. 6 ist es auch möglich, die Einlagerung der stiftförmig ausgebildeten Werkstoffstücke (13) so auszuführen, daß nur ein Teil der stiftförmig ausgebildeten Werkstoffstücke (13) in die Mantelfläche des Walzenkörpers (10, 11) eingelagert ist und der restliche Teil igelförmig aus dem Walzenkörper (10, 11) herausragt, wobei dieser überstehende Teil an seinem oberen Ende kegelstumpfförmig ausgebildet ist.According to the embodiment of Fig. 6, it is also possible to carry out the storage of the pin-shaped material pieces (13) so that only a part of the pin-shaped material pieces (13) is embedded in the lateral surface of the roller body (10, 11) and the rest Part protrudes hedgehog-shaped from the roller body (10, 11), this protruding part being frustoconical at its upper end.

Die Kegelstumpf-Mantelfläche (22) verhindert vorteilhaft, das seitliche Kräfte, die beim Betrieb der Mahlwalze an den herausragenden Teilen angreifen können, zu unerwünschten Drehmomenten und somit zu einem Abbrechen der herausragenden Teile der stiftförmig ausgebildeten Werkstoffstücke führen. Aus dem gleichen Grund kann erfindungsgemäß der überstehende Teil an seinem oberen Ende auch halbkugelförmig ausgebildet sein.The truncated cone outer surface (22) advantageously prevents lateral forces which can act on the protruding parts during operation of the grinding roller lead to undesirable torques and thus to a break-off of the protruding parts of the pin-shaped material pieces. For the same reason, according to the invention the protruding part may also be hemispherical at its upper end.

Die Zwischenräume zwischen den überstehenden stiftförmig ausgebildeten Werkstoffstücken (13) können bis zur Oberkante (21) der stiftförmig ausgebildeten Werkstoffstücke (13) mit einem weiteren Werkstoff (20) - es kann sich hierbei beispielsweise um eine keramische Masse oder beispielsweise um einen mit keramischen Materialien versetzten Kunststoff handeln - gefüllt werden, so daß eine geschlossene Walzenmanteloberfläche (14) erhalten wird.The spaces between the protruding pin-shaped material pieces (13) can be up to the upper edge (21) of the pin-shaped material pieces (13) with another material (20) - this can be, for example, a ceramic mass or, for example, one with ceramic materials Trade plastic - be filled so that a closed roll surface (14) is obtained.

Die Zwischenräume können aber auch zunächst frei bleiben, so daß sie sich erst beim Betrieb der Walzenmaschine, z. B. bei Durchführung der Gutbettzerkleinerung körnigen Gutes, mit Gutsmaterial auffüllen und so eine geschlossene Walzenmanteloberfläche (14) bilden.The gaps can also initially remain free, so that they are only when the roller machine, z. B. when performing the material bed comminution of granular material, fill with material and thus form a closed roll surface (14).

Claims (13)

Verschleißfeste Mahlwalze für die Verwendung in Walzenmaschinen, insbesondere in Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes, dadurch gekennzeichnet, daß im Bereich der Walzenoberfläche (14, 16) der Walzenkörper (10, 11) verschleißfeste Werkstoffstücke (12, 13, 18) eingelagert sind, die härter sind als das sie umgebende Walzenmaterial.Wear-resistant grinding roller for use in roller machines, in particular in high-pressure roller presses for pressure comminution of granular material, characterized in that wear-resistant material pieces (12, 13, 18) are embedded in the area of the roller surface (14, 16) of the roller body (10, 11), which are harder than the surrounding roller material. Verschleißfeste Mahlwalze nach Anspruch 1, dadurch gekennzeichnet, daß die eingelagerten Werkstoffstücke (12, 13) platten- und/oder stiftförmig ausgebildet sind.Wear-resistant grinding roller according to claim 1, characterized in that the embedded material pieces (12, 13) are plate and / or pin-shaped. Verschleißfeste Mahlwalze nach Anspruch 1, dadurch gekennzeichnet, daß die eingelagerten Werkstoffstücke (18) hülsenförmig ausgebildet sind.Wear-resistant grinding roller according to claim 1, characterized in that the embedded pieces of material (18) are sleeve-shaped. Verschleißfeste Mahlwalze nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Bereich der Walzenoberfläche (14, 16), in die die verschleißfesten Werkstoffstücke (12, 13, 18) eingelagert sind, als Bandagenring ausgebildet ist, der mit dem Walzenkörper lösbar verbunden ist.Wear-resistant grinding roller according to claims 1 to 3, characterized in that the area of the roller surface (14, 16) into which the wear-resistant material pieces (12, 13, 18) are embedded is designed as a bandage ring which is detachably connected to the roller body. Verschleißfeste Mahlwalze nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Bereich der Walzenoberfläche (14, 16), in die die verschleißfesten Werkstoffstücke (12, 13, 18) eingelagert sind, aus mehreren gleichgroßen Walzensegmenten gebildet wird, die mit dem Walzenkörper lösbar verbunden sind.Wear-resistant grinding roller according to claims 1 to 3, characterized in that the area of the roller surface (14, 16) into which the wear-resistant one Pieces of material (12, 13, 18) are embedded, is formed from several roller segments of the same size, which are detachably connected to the roller body. Verschleißfeste Mahlwalze nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die eingelagerten Werkstoffstücke aus Hartmetallmaterialien und/oder aus keramischen Materialien bestehen.Wear-resistant grinding roller according to claims 1 to 5, characterized in that the embedded pieces of material consist of hard metal materials and / or ceramic materials. Verschleißfeste Mahlwalze nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß die eingelagerten Werkstoffstücke (12, 13, 18) mit dem Walzenbereich (14, 16), in den sie eingelagert werden, durch Kleben verbunden sind.Wear-resistant grinding roller according to claims 1 to 6, characterized in that the embedded material pieces (12, 13, 18) are connected to the roller region (14, 16) in which they are embedded by gluing. Verschleißfeste Mahlwalze nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß die eingelagerten Werkstoffstücke (12, 13', 18) mit dem Walzenbereich (14, 16) in den sie eingelagert werden, durch Einpressen verbunden sind, wobei die die Werkstoffstücke (12, 13, 18) durch Einlagerung aufzunehmenden Ausnehmungen im Walzenbereich (14, 16) vor der Einlagerung geringere Abmessungen aufweisen als die einzulagernden Werkstoffstücke (12, 13, 18).Wear-resistant grinding roller according to claims 1 to 6, characterized in that the embedded material pieces (12, 13 ', 18) are connected to the roller region (14, 16) into which they are embedded by being pressed in, the material pieces (12, 13, 18) of recesses to be accommodated in the roller region (14, 16) before storage have smaller dimensions than the material pieces (12, 13, 18) to be stored. Verschleißfeste Mahlwalze nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die stiftförmig ausgebildeten Werkstoffstücke (13) nur teilweise in den Bereich der Walzenoberfläche (14) der Walzenkörper (10, 11) eingelagert sind und die Zwischenräume zwischen den überstehenden stiftförmig ausgebildeten Werkstoffstücken (13) mit einem weiteren Werkstoff (20), vorzugsweise ein keramisches Material enthaltener Werkstoff, aufgefüllt sind.Wear-resistant grinding roller according to one of the preceding claims, characterized in that the pin-shaped material pieces (13) are only partially embedded in the area of the roller surface (14) of the roller bodies (10, 11) and the gaps between the protruding pins trained pieces of material (13) are filled with a further material (20), preferably a material containing ceramic material. Verschleißfeste Mahlwalze nach Anspruch 9, dadurch gekennzeichnet, daß die von den überstehenden stiftförmig ausgebildeten Werkstoffstücken (13) gebildeten Zwischenräume mit dem der Walzenmaschine beim Betrieb aufgegebenen Zerkleinerungsgut aufgefüllt sind.Wear-resistant grinding roller according to claim 9, characterized in that the intermediate spaces formed by the protruding pin-shaped material pieces (13) are filled with the comminution material given to the roller machine during operation. Verschleißfeste Mahlwalze nach den Ansprüchen 9 und 10, dadurch gekennzeichnet, daß die überstehenden stiftförmig ausgebildeten Werkstoffstücke (13) an ihrem oberen Ende kegelstumpfförmig ausgebildet sind.Wear-resistant grinding roller according to claims 9 and 10, characterized in that the projecting pin-shaped material pieces (13) are frustoconical at their upper end. Verfahren zur Fertigung einer verschleißfesten Mahlwalze nach Anspruch 4, dadurch gekennzeichnet, daß die Einlagerung der Werkstoffstücke (12, 13, 18) in den Bandagenring vor dem Aufschrumpfen des Bandagenringes auf den Walzenkörper erfolgt.A method of manufacturing a wear-resistant grinding roller according to claim 4, characterized in that the material pieces (12, 13, 18) are incorporated into the drum ring before the drum ring is shrunk onto the roller body. Verfahren zur Fertigung einer verschleißfesten Mahlwalze nach Anspruch 5, dadurch gekennzeichnet, daß die Einlagerung der Werkstoffstücke (12, 13, 18) beim Gießen der Segmente durch Einbringen der Werkstoffstücke (12, 13, 18) in die Gießform erfolgt.A method of manufacturing a wear-resistant grinding roller according to claim 5, characterized in that the material pieces (12, 13, 18) are embedded during the casting of the segments by introducing the material pieces (12, 13, 18) into the casting mold.
EP92106594A 1991-05-28 1992-04-16 Wear-resistant roller to be used in roller crushers, in particular high-pressure roller crushers Expired - Lifetime EP0516952B1 (en)

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DE4117435 1991-05-28
DE4117435 1991-05-28
DE4132474A DE4132474A1 (en) 1991-05-28 1991-09-30 WEAR-RESISTANT GRINDING ROLLER FOR USE IN ROLLING MACHINES, ESPECIALLY IN HIGH PRESSURE ROLLING PRESSES
DE4132474 1991-09-30

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EP0516952A1 true EP0516952A1 (en) 1992-12-09
EP0516952B1 EP0516952B1 (en) 1995-09-20

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US (1) US5269477A (en)
EP (1) EP0516952B1 (en)
JP (1) JPH05168960A (en)
AT (1) ATE128044T1 (en)
AU (1) AU655465B2 (en)
BR (1) BR9202010A (en)
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DE102018113440A1 (en) 2018-06-06 2019-12-12 Maschinenfabrik Köppern Gmbh & Co. Kg roll press
WO2019233647A1 (en) 2018-06-06 2019-12-12 Maschinenfabrik Köppern Gmbh & Co. Kg Roller press
DE102020104526A1 (en) 2020-02-20 2021-08-26 Maschinenfabrik Köppern Gmbh & Co. Kg High pressure roller press
WO2021164919A1 (en) 2020-02-20 2021-08-26 Maschinenfabrik Köppern Gmbh & Co. Kg High-pressure roller press
DE102020104526B4 (en) 2020-02-20 2024-03-28 Maschinenfabrik Köppern Gmbh & Co. Kg High pressure roller press
DE102021103573A1 (en) 2021-02-16 2022-08-18 Maschinenfabrik Köppern GmbH & Co KG high-pressure roller press
WO2022174957A1 (en) 2021-02-16 2022-08-25 Maschinenfabrik Köppern Gmbh & Co. Kg High-pressure roller press
DE202021103408U1 (en) 2021-06-25 2022-04-04 Maschinenfabrik Köppern Gmbh & Co. Kg high-pressure roller press

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CA2069591A1 (en) 1992-11-29
DK0516952T3 (en) 1995-11-06
DE59203720D1 (en) 1995-10-26
DE4132474A1 (en) 1992-12-03
US5269477A (en) 1993-12-14
AU655465B2 (en) 1994-12-22
JPH05168960A (en) 1993-07-02
AU1636092A (en) 1992-12-03
EP0516952B1 (en) 1995-09-20
ATE128044T1 (en) 1995-10-15
BR9202010A (en) 1993-01-12
ES2077278T3 (en) 1995-11-16

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