EP0388825A2 - Wear element for an impact mill rotor - Google Patents

Wear element for an impact mill rotor Download PDF

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Publication number
EP0388825A2
EP0388825A2 EP90105084A EP90105084A EP0388825A2 EP 0388825 A2 EP0388825 A2 EP 0388825A2 EP 90105084 A EP90105084 A EP 90105084A EP 90105084 A EP90105084 A EP 90105084A EP 0388825 A2 EP0388825 A2 EP 0388825A2
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EP
European Patent Office
Prior art keywords
wear
section
carrier body
hard metal
approximately
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
EP90105084A
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German (de)
French (fr)
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EP0388825A3 (en
EP0388825B1 (en
Inventor
Johann Grafinger
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Sbm Wageneder GmbH
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Sbm Wageneder GmbH
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Priority to AT90105084T priority Critical patent/ATE90885T1/en
Publication of EP0388825A2 publication Critical patent/EP0388825A2/en
Publication of EP0388825A3 publication Critical patent/EP0388825A3/en
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Publication of EP0388825B1 publication Critical patent/EP0388825B1/en
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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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1835—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc
    • B02C13/1842—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc with dead bed protected beater or impeller elements

Definitions

  • the invention relates to an interchangeable wear part for the rotor of an impact mill, which is arranged in an approximately ring-shaped housing and is provided with an axial inlet opening and with ejection openings formed on the circumference, the interchangeable wear part being approximately L-shaped, the longer leg of which is formed by a essentially plate-shaped carrier body and its shorter leg is formed by a hard metal strip as a chute reinforcement, which preferably consists of an alloy with a tungsten carbide content of over 91%, the rest essentially cobalt, and forms a wear surface that recoils in the direction of ejection.
  • Such a replaceable wear part can be found, for example, in DE-Gb 8 630 185.
  • the wearing part has a hard metal strip, which corresponds approximately to a quarter or third circle, the wearing surface having a satisfactory service life and a favorable, fairly uniform wear when comminuting crushed material in the usual composition.
  • crushed material with a high proportion of fines leads to less favorable wear, so that the innovation has set itself the task of creating a wear part whose hard metal strip also leads to good results in this case, that is to say a satisfactorily long service life.
  • the hard metal strip is designed as a pentagonal prism, a first and a second section of the wear surface abutting one another in a tear-off edge at an internal angle of approximately 125 °.
  • a major cause is likely to be the level design of the two sections of the wear surface that are significantly subject to wear, the aspect ratio of which is preferably between 1: 4 and 1: 5.
  • the second and a third section of the wear surface lying outside the rotor circumference preferably form an angle of 110 ° with one another, the length of the third section being in particular essentially the same as that of the first section.
  • the surface of the hard metal strip adjoining the carrier body preferably extends essentially perpendicular to the first section of the wear surface and delimits a material receiving pocket formed in the rotor.
  • the angle between the surface adjoining the carrier body and the mounting surface or soldering surface to the carrier body is 115 °, the counter surface or supporting surface of the carrier body being in particular beveled at 40 ° to the carrier body.
  • the rotor 2 of an impact mill is arranged in an annular housing, in which impact surfaces are formed due to the material that has set up.
  • the rotor 2 has a bottom plate 9, a cover plate, not shown, and wings 11 arranged between them, a central opening being provided in the cover plate through which the material to be comminuted enters the rotor 2.
  • Below the opening in the cover plate there is a conical or truncated cone-shaped impact body 7 which distributes the material to be shredded, which accelerates in the rotor 2 with the help of the vanes 11 and is finally thrown out through outlet openings 16 onto the impact surfaces of the housing and is thereby broken.
  • a circumferential rotor speed of 60-72 m / s is preferably selected.
  • the rotor 2 is provided with three vanes 11, which extend substantially in the circumferential direction, leaving a central region the size of the impact body 7.
  • Each wing 11 consists of a three-sided part with the circumference correspondingly curved outside and inside, each inside of two wings 11 defining an ejection channel that narrows towards the outlet opening 16.
  • One of the two inner sides is concave, so that a material receiving pocket 17 is formed, in which material accumulates at the beginning of the shredding process, the surface of which also forms an impact surface, thereby protecting the wing 11 from damage.
  • the circumferential parts of the wings are protected by the wear parts projecting beyond the rotor circumference, so that the armor to be provided there can be given thinly.
  • the carrier body 12 which can be fastened to the wing end by means of screws 14, has, for example, the essentially plate-shaped configuration shown.
  • the hard metal strip 13 is designed in the form of a pentagonal prism, and has an outer wear surface 21 consisting of three sections 25, 26, 28, an inner surface 20 forming the inner surface of the material-receiving pocket 17 and a mounting surface 22 which is at an angle below 40 ° bevelled support surface of the support body 12 abuts.
  • the height of the hard metal strip 13 can also be divided into several sections.
  • the hard metal strip 13 is fastened to the end of the carrier body 12, in particular soldered on, in such a way that the first section 25 of the wear surface 21 lies approximately in the abovementioned contact plane B and forms an angle of 125 ° with the second section 26, the two sections 25, 26 meet in the tear-off edge 24.
  • the inner surface 20 extends to the first section 25 at an angle of approximately 90 ° and to the mounting surface 22 with which the hard metal strip 13 rests on the carrier body 12 at an angle of 115 °.
  • a third section 28 of the wear surface 21 adjoins the second section 26 at an angle of 110 °.
  • the mounting surface 22 and the third section 28 of the wear surface 21 enclose an angle of 100 °.
  • the respective Lengths of the mounting surface 22 and the inner surface 20 or the first and third sections 25, 28 of the wear surface 21 are substantially the same.
  • the inner surface 20 of the hard metal strip 13 and the adjoining side surface 23 of the plate-shaped carrier body 12 are at an angle of approximately 105 ° to one another, so that the wearing part is thus L-shaped overall, the shorter leg through the hard metal strip 13 and the longer leg through the Carrier body 12 is formed.
  • the overall arrangement of the wearing part is preferably such that an axial plane A of the rotor 2 includes an angle of approximately 25 ° to 30 ° through the tear-off edge 24 with the first section 25.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Crushing And Grinding (AREA)

Abstract

An replaceable wear element for the rotor (2) of an impact mill has an approximately L-shape. Its longer leg consists of an essentially plate-shaped carrier body (12) and its shorter leg of a carbide metal strip (13) which has a wear surface (21) which springs back in the expulsion direction and is constructed as a five-edged prism. A first and a second section (25, 26) of the wear surface (20) abut at a tear-off edge (24) at an internal angle of approximately 125 DEG . <IMAGE>

Description

Die Erfindung betrifft einen auswechselbaren Verschleißteil für den Rotor einer Prallmühle, der in einem etwa ringför­migen Gehäuse angeordnet und mit einer axialen Eintritts­öffnung, sowie mit am Umfang gebildeten Auswurföffnungen versehen ist, wobei der auswechselbare Verschleißteil etwa L-förmig ausgebildet ist, dessen längerer Schenkel durch einen im wesentlichen plattenförmigen Trägerkörper und dessen kürzerer Schenkel durch eine Hartmetalleiste als Auswurföffnungsbewehrung gebildet ist, die vorzugsweise aus einer Legierung mit einem Wolframcarbidanteil von über 91 %, Rest im wesentlichen Kobalt, besteht und eine in Auswurfrichtung rückspringende Verschleißfläche bildet.The invention relates to an interchangeable wear part for the rotor of an impact mill, which is arranged in an approximately ring-shaped housing and is provided with an axial inlet opening and with ejection openings formed on the circumference, the interchangeable wear part being approximately L-shaped, the longer leg of which is formed by a essentially plate-shaped carrier body and its shorter leg is formed by a hard metal strip as a chute reinforcement, which preferably consists of an alloy with a tungsten carbide content of over 91%, the rest essentially cobalt, and forms a wear surface that recoils in the direction of ejection.

Ein derartiger auswechselbarer Verschleißteil ist beispiels­weise dem DE-Gb 8 630 185 zu entnehmen. Der Verschleißteil weist eine Hartmetalleiste auf, die etwa einem Viertel- oder Drittelkreis entspricht, wobei die Verschleißfläche zufriedenstellende Standzeit und einen günstigen, ziemlich gleichmäßig verlaufenden Verschleiß beim Zerkleinern von Brechgut in üblicher Zusammensetzung auf. Brechgut mit hohem Feinanteil führt jedoch zu ungünstigerem Verschleiß, sodaß es sich die Neuerung zur Aufgabe gestellt hat, einen Verschleißteil zu schaffen, dessen Hartmetalleiste auch in diesem Fall zu guten Ergebnissen, das heißt einer zufrie­denstellend langen Standzeit führt.Such a replaceable wear part can be found, for example, in DE-Gb 8 630 185. The wearing part has a hard metal strip, which corresponds approximately to a quarter or third circle, the wearing surface having a satisfactory service life and a favorable, fairly uniform wear when comminuting crushed material in the usual composition. However, crushed material with a high proportion of fines leads to less favorable wear, so that the innovation has set itself the task of creating a wear part whose hard metal strip also leads to good results in this case, that is to say a satisfactorily long service life.

Erfindungsgemäß wird dies dadurch erreicht, daß die Hartme­talleiste als fünfkantiges Prisma ausgebildet ist, wobei ein erster und ein zweiter Abschnitt der Verschleiß­fläche in einer Abrißkante in einem Innenwinkel von etwa 125° zueinander stoßen.This is achieved according to the invention in that the hard metal strip is designed as a pentagonal prism, a first and a second section of the wear surface abutting one another in a tear-off edge at an internal angle of approximately 125 °.

Die Ursachen für die standzeitverlängernde Wirkung der erfindungsgemäßen Ausgestaltung sind noch nicht völlig er­sichtlich. Eine wesentliche Ursache dürfte in der ebenen Ausbildung der beiden maßgeblich dem Verschleiß unterlie­genden Abschnitte der Verschleißfläche liegen, deren Län­genverhältnis bevorzugt zwischen 1:4 und 1:5 liegt. Der zweite und ein dritter, außerhalb des Rotorumfanges lie­gender Abschnitt der Verschleißfläche schließen bevorzugt einen Winkel von 110° miteinander ein, wobei die Länge des dritten Abschnittes insbesondere im wesentlichen gleich der des ersten Abschnittes ist. Die an den Trägerkörper an­schließende Fläche der Hartmetalleiste erstreckt sich be­vorzugt im wesentlichen senkrecht zum ersten Abschnitt der Verschleißfläche und begrenzt eine im Rotor ausgebildete Materialaufnahmetasche. Weiters beträgt in einer bevorzug­ten Ausführung der Winkel zwischen der an den Trägerkörper anschließenden Fläche und der Montagefläche bzw. Lötfläche zum Trägerkörper 115°, wobei die Gegenfläche bzw. Stütz­fläche des Trägerkörpers insbesondere unter 40° zum Träger­körper abgeschrägt ist.The causes of the service life-prolonging effect of the embodiment according to the invention are not yet fully apparent. A major cause is likely to be the level design of the two sections of the wear surface that are significantly subject to wear, the aspect ratio of which is preferably between 1: 4 and 1: 5. The second and a third section of the wear surface lying outside the rotor circumference preferably form an angle of 110 ° with one another, the length of the third section being in particular essentially the same as that of the first section. The surface of the hard metal strip adjoining the carrier body preferably extends essentially perpendicular to the first section of the wear surface and delimits a material receiving pocket formed in the rotor. Furthermore, in a preferred embodiment, the angle between the surface adjoining the carrier body and the mounting surface or soldering surface to the carrier body is 115 °, the counter surface or supporting surface of the carrier body being in particular beveled at 40 ° to the carrier body.

Nachstehend wird nun die Erfindung an Hand der Figuren der beiliegenden Zeichnungen näher beschrieben, ohne darauf be­schränkt zu sein.The invention will now be described in more detail below with reference to the figures in the accompanying drawings, without being limited thereto.

Es zeigen:

  • Fig. 1 einen Horizontalschnitt durch einen Rotor einer Prallmühle, dessen drei Auswurföff­nungen mit erfindungsgemäßen Verschleiß­teilen bestückt sind und
  • Fig. 2 den Bereich einer Auswurföffnung vergrößert im Detail.
Show it:
  • Fig. 1 shows a horizontal section through a rotor of an impact mill, the three ejection openings are equipped with wearing parts according to the invention and
  • Fig. 2 enlarged the area of an ejection opening in detail.

Der Rotor 2 einer Prallmühle ist in einem ringförmigen Ge­häuse angeordnet, in dem sich durch sich ansetzendes Mate­rial Prallflächen ausbilden. Der Rotor 2 weist eine Boden­ platte 9, eine nicht gezeichnete Deckplatte und zwischen diesen angeordnete Flügel 11 auf, wobei in der Deckplatte eine zentrale Öffnung vorgesehen ist, durch die das zu zerkleinernde Material in den Rotor 2 gelangt. Unterhalb der Öffnung in der Deckplatte befindet sich ein kegel- bzw. kegelstumpfförmiger Prallkörper 7, der das zu zerkleinern­de Material verteilt, das im Rotor 2 mit Hilfe der Flügel 11 beschleunigt und schließlich durch Austrittsöffnungen 16 auf die Prallflächen des Gehäuses ausgeschleudert und dabei zerbrochen wird. Vorzugsweise wird eine Rotorumfangsge­schwindigkeit von 60-72 m/s gewählt.The rotor 2 of an impact mill is arranged in an annular housing, in which impact surfaces are formed due to the material that has set up. The rotor 2 has a bottom plate 9, a cover plate, not shown, and wings 11 arranged between them, a central opening being provided in the cover plate through which the material to be comminuted enters the rotor 2. Below the opening in the cover plate there is a conical or truncated cone-shaped impact body 7 which distributes the material to be shredded, which accelerates in the rotor 2 with the help of the vanes 11 and is finally thrown out through outlet openings 16 onto the impact surfaces of the housing and is thereby broken. A circumferential rotor speed of 60-72 m / s is preferably selected.

Der Rotor 2 ist mit drei Flügeln 11 versehen, die sich un­ter Freilassung eines Mittelbereiches in der Größe des Prallkörpers 7 im wesentlichen in Umfangsrichtung erstrecken. Jeder Flügel 11 besteht aus einem dreiseitigen Teil mit dem Umfang entsprechend gewölbter Außenseite und Innenseiten, wobei je eine Innenseite zweier Flügel 11 einen Auswurfkanal begrenzt, der sich zur Austrittsöffnung 16 hin verengt. Eine der beiden Innenseiten verläuft konkav, sodaß sich da­durch eine Materialaufnahmetasche 17 ausbildet, in der sich zu Beginn des Zerkleinerungsvorganges Material ansammelt, dessen Oberfläche ebenfalls eine Prallfläche bildet, wodurch der Flügel 11 vor Beschädigung geschützt ist. Eine Berührungs­ebene B der beiden Randkanten der Materialaufnahmetasche 17, in der sich bedingt durch die Rotordrehung eine einer ge­krümmten Linie 27 folgende Materialoberfläche ausbildet, stellt vorzugsweise auch eine Tangentialebene zum Pralltel­ler 7 dar. Am Auswurfende jedes Flügels 11, an dem der Ober­flächenschutz durch Materialansammlung nicht mehr möglich ist, ist der über den Rotorumfang vorstehende, neuerungsge­mäße Verschleißteil angeordnet, der aus einem am Flügel 11 befestigbaren Trägerkörper 12 aus Stahl und einer ver­schleißarmen Hartmetalleiste 13, vor allem der Sorte B 10 T mit einem Wolframcarbidanteil von 94 %, einer Vickershärte von 1450 HV und einer Wolframcarbidkorngröße zwischen 0,002 und 0,004 mm besteht. Durch die über den Rotorumfang vor­stehenden Verschleißteile werden die Umfangspartien der Flügel geschont, sodaß die dort vorzusehende Panzerung dünn angeführt werden kann.The rotor 2 is provided with three vanes 11, which extend substantially in the circumferential direction, leaving a central region the size of the impact body 7. Each wing 11 consists of a three-sided part with the circumference correspondingly curved outside and inside, each inside of two wings 11 defining an ejection channel that narrows towards the outlet opening 16. One of the two inner sides is concave, so that a material receiving pocket 17 is formed, in which material accumulates at the beginning of the shredding process, the surface of which also forms an impact surface, thereby protecting the wing 11 from damage. A contact plane B of the two edge edges of the material receiving pocket 17, in which a material surface following a curved line 27 is formed due to the rotor rotation, preferably also represents a tangential plane to the baffle plate 7 is possible, the protruding over the rotor circumference, according to the new wear part is arranged, which consists of a support body 12 which can be fastened to the wing 11 and made of steel and a low-wear hard metal strip 13, especially of the B 10 T type with a tungsten carbide content of 94%, a Vickers hardness of 1450 HV and a tungsten carbide grain size between 0.002 and 0.004 mm. The circumferential parts of the wings are protected by the wear parts projecting beyond the rotor circumference, so that the armor to be provided there can be given thinly.

In Fig. 2 ist das mit dem erfindungsgemäßen Verschleißteil bestückte Ende eines Flügels 11 im Detal dargestellt. Der Trägerkörper 12, der mittels Schrauben 14 am Flügelende befestigbar ist, weist beispielsweise die gezeigte, im we­sentlichen plattenförmige Ausbildung auf. Die Hartmetall­leiste 13 ist in Form eines fünfkantigen Prismas ausgebil­det, und weist eine äußere aus drei Abschnitten 25, 26, 28 bestehende Verschleißfläche 21, eine innere, die Innenflä­che der Materialaufnahmetasche 17 bildende Fläche 20 und eine Montagefläche 22 auf, die an einer unter 40° abge­schrägten Stützfläche des Trägerkörpers 12 anliegt. Die Hartmetalleiste 13 kann in der Höhe auch in mehrere Ab­schnitte unterteilt sein.2 shows the end of a wing 11 equipped with the wearing part according to the invention in detail. The carrier body 12, which can be fastened to the wing end by means of screws 14, has, for example, the essentially plate-shaped configuration shown. The hard metal strip 13 is designed in the form of a pentagonal prism, and has an outer wear surface 21 consisting of three sections 25, 26, 28, an inner surface 20 forming the inner surface of the material-receiving pocket 17 and a mounting surface 22 which is at an angle below 40 ° bevelled support surface of the support body 12 abuts. The height of the hard metal strip 13 can also be divided into several sections.

Die Hartmetalleiste 13 ist am Ende des Trägerkörpers 12 so befestigt, insbesondere angelötet, daß der erste Ab­schnitt 25 der Verschleißfläche 21 annähernd in der erwähn­ten Berührungsebene B liegt und mit dem zweiten Abschnitt 26 einen Winkel von 125° einschließt, wobei die beiden Ab­schnitte 25, 26 in der Abrißkante 24 aufeinander treffen. Die innere Fläche 20 erstreckt sich zum ersten Abschnitt 25 in einem Winkel von annähernd 90° und zur Montagefläche 22, mit der die Hartmetalleiste 13 am Trägerkörper 12 auf­liegt, in einem Winkel von 115°.The hard metal strip 13 is fastened to the end of the carrier body 12, in particular soldered on, in such a way that the first section 25 of the wear surface 21 lies approximately in the abovementioned contact plane B and forms an angle of 125 ° with the second section 26, the two sections 25, 26 meet in the tear-off edge 24. The inner surface 20 extends to the first section 25 at an angle of approximately 90 ° and to the mounting surface 22 with which the hard metal strip 13 rests on the carrier body 12 at an angle of 115 °.

An den zweiten Abschnitt 26 schließt im Winkel von 110° ein dritter Abschnitt 28 der Verschleißfläche 21 an. Die Mon­tagefläche 22 und der dritte Abschnitt 28 der Verschleiß­fläche 21 schließen einen Winkel von 100° ein. Die jeweili­ gen Längen der Montagefläche 22 und der inneren Fläche 20 bzw. des ersten und des dritten Abschnittes 25, 28 der Verschleißfläche 21 sind im wesentlichen gleich. Die innere Fläche 20 der Hartmetalleiste 13 und die anschließende Seitenfläche 23 des plattenförmigen Trägerkörpers 12 liegen im Winkel von etwa 105° zueinander, sodaß der Verschleiß­teil insgesamt somit L-förmig ausgebildet ist, wobei der kürzere Schenkel durch die Hartmetalleiste 13 und der längere Schenkel durch den Trägerkörper 12 gebildet wird. Die Gesamtanordnung des Verschleißteiles ist dabei vorzugs­weise so, daß eine Axialebene A des Rotors 2 durch die Ab­rißkante 24 mit dem ersten Abschnitt 25 einen Winkel von etwa 25° bis 30° einschließt.A third section 28 of the wear surface 21 adjoins the second section 26 at an angle of 110 °. The mounting surface 22 and the third section 28 of the wear surface 21 enclose an angle of 100 °. The respective Lengths of the mounting surface 22 and the inner surface 20 or the first and third sections 25, 28 of the wear surface 21 are substantially the same. The inner surface 20 of the hard metal strip 13 and the adjoining side surface 23 of the plate-shaped carrier body 12 are at an angle of approximately 105 ° to one another, so that the wearing part is thus L-shaped overall, the shorter leg through the hard metal strip 13 and the longer leg through the Carrier body 12 is formed. The overall arrangement of the wearing part is preferably such that an axial plane A of the rotor 2 includes an angle of approximately 25 ° to 30 ° through the tear-off edge 24 with the first section 25.

Claims (6)

1. Auswechselbarer Verschleißteil für den Rotor einer Prallmühle, der in einem etwa ringförmigen Gehäuse angeordnet und mit einer axialen Eintrittsöffnung sowie mit am Umfang gebildeten Auswurföffnungen ver­sehen ist, wobei der auswechselbare Verschleißteil etwa L-förmig ausgebildet ist, dessen längerer Schen­kel durch einen im wesentlichen plattenförmigen Trägerkörper und dessen kürzerer Schenkel durch eine Hartmetalleiste als Auswurföffnungsbewehrung gebildet ist, die vorzugsweise aus einer Legierung mit einem Wolframcarbidanteil von über 91 %, Rest im wesentli­chen Kobalt, besteht und eine in Auswurfrichtung rückspringende Verschleißfläche bildet, dadurch gekenn­zeichnet, daß die Hartmetalleiste (13) als fünfkanti­ges Prisma ausgebildet ist, wobei ein erster und ein zweiter Abschnitt (25,26) der Verschleißfläche (21) in einer Abrißkante (24) in einem Innenwinkel von etwa 125° zueinander stoßen.1. Replaceable wear part for the rotor of an impact mill, which is arranged in an approximately annular housing and is provided with an axial inlet opening and with ejection openings formed on the circumference, the replaceable wear part being approximately L-shaped, the longer leg of which is formed by an essentially plate-shaped one Carrier body and its shorter leg is formed by a hard metal bar as an ejection opening reinforcement, which preferably consists of an alloy with a tungsten carbide content of over 91%, the rest essentially cobalt, and forms a wear surface that recoils in the direction of ejection, characterized in that the hard metal bar (13) as five-sided prism is formed, with a first and a second section (25, 26) of the wear surface (21) abutting one another in a tear-off edge (24) at an internal angle of approximately 125 °. 2. Verschleißteil nach Anspruch 1, dadurch gekennzeichnet, daß der zweite Abschnitt (26) und ein dritter Abschnitt (28) der Verschleißfläche (21) einen Innenwinkel von 110° einschließen.2. Wearing part according to claim 1, characterized in that the second section (26) and a third section (28) of the wear surface (21) include an inside angle of 110 °. 3. Verschleißteil nach Anspruch 2, dadurch gekennzeich­net, daß der dritte Abschnitt (28) der Verschleiß­fläche (21) und eine Montagefläche (22) zum Träger­körper (12) einen Innenwinkel von 100° einschließen.3. Wearing part according to claim 2, characterized in that the third section (28) of the wear surface (21) and a mounting surface (22) to the carrier body (12) include an inside angle of 100 °. 4. Verschleißteil nach einem der Ansprüche 1 bis 3, da­durch gekennzeichnet, daß die an den Trägerkörper (12) anschließende innere Fläche (20) der Hartmetalleiste (13) sich im wesentlichen senkrecht zum ersten Ab­schnitt (25) der Verschleißfläche erstreckt.4. Wearing part according to one of claims 1 to 3, characterized in that the inner surface (20) of the hard metal strip (13) adjoining the carrier body (12) extends essentially perpendicularly to the first section (25) of the wearing surface. 5. Verschleißteil nach Anspruch 3 und 4, dadurch gekenn­zeichnet, daß die innere Fläche (20) der Hartmetall­leiste (13) und die Montagefläche (22) zum Trägerkörper (12) einen Innenwinkel von 115° einschließen.5. Wearing part according to claim 3 and 4, characterized in that the inner surface (20) of the hard metal strip (13) and the mounting surface (22) to the carrier body (12) include an inside angle of 115 °. 6. Verschleißteil nach einem der Ansprüche 1 bis 5, da­durch gekennzeichnet, daß der im wesentlichen platten­förmige Trägerkörper (12) eine unter 40° abgeschrägte Stützfläche für die Montagefläche (22) der Hartmetall­leiste (13) aufweist, deren innere Fläche (20) mit der anschließenden Seitenfläche (23) der Trägerleiste (12) einen Winkel von 105° einschließt.6. Wearing part according to one of claims 1 to 5, characterized in that the substantially plate-shaped carrier body (12) has a bevelled support surface at 40 ° for the mounting surface (22) of the hard metal strip (13), the inner surface (20) with the adjoining side surface (23) of the carrier strip (12) encloses an angle of 105 °.
EP90105084A 1989-03-21 1990-03-17 Wear element for an impact mill rotor Expired - Lifetime EP0388825B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90105084T ATE90885T1 (en) 1989-03-21 1990-03-17 WEAR PART FOR AN IMPACT MILL ROTOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8903501U 1989-03-21
DE8903501U DE8903501U1 (en) 1989-03-21 1989-03-21 Wear part for an impact mill rotor

Publications (3)

Publication Number Publication Date
EP0388825A2 true EP0388825A2 (en) 1990-09-26
EP0388825A3 EP0388825A3 (en) 1990-12-19
EP0388825B1 EP0388825B1 (en) 1993-06-23

Family

ID=6837352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105084A Expired - Lifetime EP0388825B1 (en) 1989-03-21 1990-03-17 Wear element for an impact mill rotor

Country Status (3)

Country Link
EP (1) EP0388825B1 (en)
AT (1) ATE90885T1 (en)
DE (2) DE8903501U1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013088A1 (en) * 1995-10-06 1997-04-10 Technical Concepts L.P. Automatic flush valve
US7257876B2 (en) * 2002-08-28 2007-08-21 Sandvik Intellectual Property Ab Holder for a wear part of a crusher
CN112264149A (en) * 2020-11-19 2021-01-26 何俊民 Impact type sand making machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2574000A1 (en) * 1984-12-04 1986-06-06 Wageneder Sbm Gmbh Impact crusher for rock etc.
EP0265580A2 (en) * 1986-10-30 1988-05-04 SBM WAGENEDER Gesellschaft m.b.H. Impact mill for crushing rock or the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2574000A1 (en) * 1984-12-04 1986-06-06 Wageneder Sbm Gmbh Impact crusher for rock etc.
EP0265580A2 (en) * 1986-10-30 1988-05-04 SBM WAGENEDER Gesellschaft m.b.H. Impact mill for crushing rock or the like

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997013088A1 (en) * 1995-10-06 1997-04-10 Technical Concepts L.P. Automatic flush valve
US7257876B2 (en) * 2002-08-28 2007-08-21 Sandvik Intellectual Property Ab Holder for a wear part of a crusher
CN100351018C (en) * 2002-08-28 2007-11-28 山特维克知识产权股份有限公司 A holder for a wear part of a crusher
CN112264149A (en) * 2020-11-19 2021-01-26 何俊民 Impact type sand making machine
CN112264149B (en) * 2020-11-19 2021-12-14 贵州固鑫新材料有限公司 Impact type sand making machine

Also Published As

Publication number Publication date
ATE90885T1 (en) 1993-07-15
DE59001824D1 (en) 1993-07-29
DE8903501U1 (en) 1989-05-11
EP0388825A3 (en) 1990-12-19
EP0388825B1 (en) 1993-06-23

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