EP0447774A1 - Clamping device for beater bars in peripheral slots of impact-mill rotors - Google Patents

Clamping device for beater bars in peripheral slots of impact-mill rotors Download PDF

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Publication number
EP0447774A1
EP0447774A1 EP91101426A EP91101426A EP0447774A1 EP 0447774 A1 EP0447774 A1 EP 0447774A1 EP 91101426 A EP91101426 A EP 91101426A EP 91101426 A EP91101426 A EP 91101426A EP 0447774 A1 EP0447774 A1 EP 0447774A1
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EP
European Patent Office
Prior art keywords
rotor
pressure
pressure line
discs
elements
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
EP91101426A
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German (de)
French (fr)
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EP0447774B1 (en
Inventor
Werner Bergmann
Volker Heukamp
Gerhard Hemesath
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.)
MSG MASCHINEN-SERVICE GMBH
Original Assignee
Salzgitter Maschinenbau GmbH
Noell Service und Maschinentechnik GmbH
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Application filed by Salzgitter Maschinenbau GmbH, Noell Service und Maschinentechnik GmbH filed Critical Salzgitter Maschinenbau GmbH
Priority to AT91101426T priority Critical patent/ATE93166T1/en
Publication of EP0447774A1 publication Critical patent/EP0447774A1/en
Application granted granted Critical
Publication of EP0447774B1 publication Critical patent/EP0447774B1/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
    • B02C13/26—Details
    • B02C13/30—Driving mechanisms
    • 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
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor

Definitions

  • the invention relates to a device for fixing blow bars in edge cutouts of impact mill rotors, in particular rotors, in which the edge cutouts are provided in rotor disks arranged at a distance from one another, with holding parts provided on the one side of the edge cutouts being arranged on the rotor and having corresponding parts the blow bars used engage and thereby fix them against a movement radially outwards, and on the other side of the edge cutouts between the side wall of each cutout and the blow bar there are wedges which hold the blow bar in engagement with the holding parts and by themselves pressure elements supporting the rotor are held in their clamping position, the pressure elements assigned to a blow bar being connected to a common, axially parallel pressure line which is provided with a connecting piece with a valve.
  • the wedges must extend at least half or over the entire length of the rotor, because such a design only makes sense if several pressure elements are connected to a pressure line.
  • this results in considerable disadvantages since the elongated wedges cannot have an individually adapted system against the blow bars at the points where they are supported against the rotor disks in view of casting inaccuracies of the blow bars.
  • the object of the invention is to avoid the disadvantages of the two known types and nevertheless to obtain a pressure line system which is independent of the rotor and which is cheaper to manufacture and whose arrangement features keep inevitable damage caused by wear and tear low.
  • the component containing the pressure line is designed as a pressure line rail, which is arranged essentially at the edge cutouts of the rotor, and in that the pressure elements are arranged on the side of the pressure line rail facing the wedges, so that they extend over the Support the pressure line rail against the rotor.
  • This pressure line rail can be made very smooth over its entire length, so that it can be made from commercially available semi-finished products and can be easily removed and replaced if damaged.
  • the wedges as is usual, can only be as long in the axial direction as the rotor disks are wide, so that they are completely in the wear shadow of the rotor disks and are therefore protected against wear. The individual placement of the wedges against the blow bars is guaranteed. After all, those are between the rotor disks lying parts of the pressure line rail are therefore exposed to little wear and tear because they are arranged further inside the rotor, where regrind parts hardly ever get.
  • the pressure line rail Due to the back pressure acting on the pressure line rail, the pressure line rail is held in its position, so that no fastening is required except for securing in an axis-parallel direction.
  • the pressure elements are connected to the pressure line via check valves.
  • the connectors for the pressure lines can be provided in a known manner at one end of each pressure line rail and thereby in the region of an end face of the rotor. They can then be reached through an appropriately arranged closable opening in the housing side wall for the purpose of connecting a pressure pump or the like.
  • the connectors can also be arranged outside the housing.
  • bores in the rotor shaft do not have to be provided for this, as is known the connection between the pressure lines provided in the pressure line rails and the connecting pieces via bores which are provided in a bushing which rotates with the rotor shaft and which surrounds the rotor shaft in the region of the housing wall.
  • a bore is provided in the bushing for each pressure line rail, each of which has a connecting piece inside and outside the housing.
  • a connecting line leading to the corresponding pressure line is connected to the inner connecting piece, for example a protected hose or an equally laid pipe, while the connecting piece provided with a valve is screwed into the outer connecting piece.
  • a spring-loaded pressure indicator can also be provided, which works, for example, with a sensor that gives a signal when the pressure in one of the pressure lines drops.
  • the impact mill is provided within its housing, of which only one side wall 1 is shown, with a rotor 2 which is arranged on a shaft 3 mounted outside the housing. It consists of several rotor disks 4 made of cast steel, which abut one another with their widened hubs 5, by means of dowel pins 6 centered and connected to each other by a ring weld 7 form a rigid drum which is connected to the shaft 3 only at its two ends.
  • Each rotor disk 4 has six edge cutouts 8 distributed over the circumference, into which blow bars 9 can be inserted.
  • the rotor disks in the axial direction have wider jaws 10 which are provided with ribs 11 which engage in corresponding grooves in the blow bars 9.
  • the front side of the edge cut-outs in the circumferential direction has a surface 12 which deviates somewhat from the radial to the rear and which is provided with a guide groove 13, while in the base surface 14 of each edge cut-out there is an axially parallel groove 15.
  • a wedge 16 is arranged in each edge cutout, which holds the blow bar with the ribs 11 of the jaws 10 in engagement.
  • a hydraulic pressure element 17 is arranged in each edge cutout 8, the plunger 18 of which rests against the wedge 16 from the inside.
  • the pressure elements 17 assigned to a blow bar are fastened on a pressure line rail 19 which is guided in the grooves 15 and in which a longitudinal bore 20 and transverse bores 21 leading from this and leading to the pressure elements 17 are provided.
  • This arrangement supports the pressure elements 17 when they exert pressure against the wedges 16 via the pressure line rail 19 inwards against the rotor disks 4.
  • a connector provided with a coupling valve can be provided, which is accessible through a closable opening provided in the housing wall 1.
  • the longitudinal bores 20 provided in the pressure line rails 19 are connected by tubes 22 to bores 23 which are provided in a bushing 24 which surrounds the rotor shaft 3 at the point where it projects outward through the housing wall 1.
  • a coupling valve connecting pieces 25 are provided, via which the pressure lines 23, 22, 20, 21 and thus the pressure elements 17, e.g. can be pressurized using a hand pump.
  • measuring devices 26 for the pressures prevailing in the individual pressure line systems can be provided at a second outer outlet, to which a sensor 27 is assigned which gives a signal when the pressure in one of the systems should drop inadmissibly.
  • webs 28 are provided, which are arranged in front of the tubes in the direction of rotation of the rotor.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Harvester Elements (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Rotary Pumps (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

A rotor which is to be used in an impact crusher has a set of coaxial discs with radially inwardly extending peripheral recesses for elongated beater bars which are parallel to the rotor axis and each of which extends into a discrete recess of each disc. The beater bars have male or female detent elements which cooperate with complementary female or male detent elements of the discs at the rear sides of the beater bars to prevent radially outward movements of the beater bars in actual use of the rotor. The front sides of the beater bars are engaged by wedges which are biased radially outwardly against the beater bars and against the respective discs by fluid-operated thrust elements in the recesses of the discs. Each thrust element has a piston rod which bears against the respective wedge and urges the wedge radially outwardly in the respective recess, and each thrust element reacts against an elongated rail which is installed in the deepmost portions of a set of aligned recesses of the discs. The thrust elements receive pressurized fluid by way of an elongated bore and radially extending ports in the rails which have each a valved connecting member at one axial end. The connecting members are connected to the respective rails by way of a channeled sleeve which surrounds the rotor shaft where it passes the housing wall of the impact crusher, the sleeve shares the rotating movements of the discs.

Description

Die Erfindung betrifft eine Einrichtung zum Festlegen von Schlagleisten in Randausschnitten von Prallmühlenrotoren, insbesondere von Rotoren, bei denen die Randausschnitte in mit Abstand voneinander angeordneten Rotorenscheiben vorgesehen sind, wobei auf der einen Seite der Randausschnitte fest am Rotor vorgesehene Halteteile angeordnet sind, die mit entsprechenden Teilen der eingesetzten Schlagleisten in Eingriff kommen und sie dadurch gegen eine Bewegung radial nach außen festlegen, und bei der auf der anderen Seite der Randausschnitte zwischen der Seitenwand jedes Ausschnittes und der Schlagleiste Keile vorgesehen sind, die die Schlagleiste mit den Halteteilen in Eingriff halten und durch sich gegen den Rotor abstützende Druckelemente in ihrer Klemmlage gehalten werden, wobei die einer Schlagleiste zugeordneten Druckelemente mit einer gemeinsamen, achsparallelen Druckleitung verbunden sind, die mit einem Anschlußstück mit Ventil versehen ist.The invention relates to a device for fixing blow bars in edge cutouts of impact mill rotors, in particular rotors, in which the edge cutouts are provided in rotor disks arranged at a distance from one another, with holding parts provided on the one side of the edge cutouts being arranged on the rotor and having corresponding parts the blow bars used engage and thereby fix them against a movement radially outwards, and on the other side of the edge cutouts between the side wall of each cutout and the blow bar there are wedges which hold the blow bar in engagement with the holding parts and by themselves pressure elements supporting the rotor are held in their clamping position, the pressure elements assigned to a blow bar being connected to a common, axially parallel pressure line which is provided with a connecting piece with a valve.

Bei einer bekannten Prallmühle mit Einrichtungen dieser Art (DE-OS 21 48 752 und danach hergestellte Prallmühle) sind die hierfür erforderlichen Druckleitungen im Rotorkörper selbst vorgesehen, beispielsweise als axiale und radiale Bohrungen in der Rotorwelle und in den Rotorscheiben. Infolge der im Betrieb von Prallmühlen auftretenden harten Schläge wurden die Anschlüsse der Druckelemente an die Mündungen der in den Rotorscheiben vorgesehenen Bohrungen leicht undicht, was zu kostspieligen Reparaturen führt. Auch ist die Herstellung der im Rotor vorgesehenen Bohrungen umständlich und teuer.In a known impact mill with devices of this type (DE-OS 21 48 752 and impact mill manufactured thereafter), the pressure lines required for this purpose are provided in the rotor body itself, for example as axial and radial bores in the rotor shaft and in the rotor disks. As a result of the hard blows that occurred in the operation of impact mills, the connections of the pressure elements to the mouths of the bores provided in the rotor disks became slightly leaky, which leads to costly repairs. The production of the holes provided in the rotor is also cumbersome and expensive.

Es ist aus der DE-OS 35 21 588 auch bereits bekannt, die gemeinsame achsparallele Druckleitung als Längsbohrung in die vom Rotor unabhängigen Keile zu legen und die Druckelemente als Stempel auszubilden, die in radial nach innen gerichteten Querbohrungen der Keile angeordnet sind und sich gegen den Rotor anlegen, um die Keile radial nach außen in ihre Klemmstellung zu drücken.It is also known from DE-OS 35 21 588 to place the common axially parallel pressure line as a longitudinal bore in the wedges independent of the rotor and to form the pressure elements as stamps which are arranged in radially inward transverse bores of the wedges and against the Position the rotor to push the wedges radially outwards into their clamping position.

Die Keile müssen sich hierbei zumindest über die halbe oder über die ganze Länge des Rotors erstrecken, weil eine solche Bauart nur dann einen Sinn hat, wenn mehrere Druckelemente an eine Druckleitung angeschlossen sind. Dadurch ergeben sich jedoch erhebliche Nachteile, denn die langgestreckten Keile können im Hinblick auf Gußungenauigkeiten der Schlagleisten keine individuell angepaßte Anlage gegen die Schlagleisten an den Stellen haben, wo sie sich gegen die Rotorscheiben abstützen. Außerdem sind die in exponierter Außenlage am Rotor angeordneten Keile zwischen den Rotorscheiben einem erheblichen Verschleiß ausgesetzt, so daß diese in der Herstellung teuren Bauteile häufig ersetzt werden müssen.The wedges must extend at least half or over the entire length of the rotor, because such a design only makes sense if several pressure elements are connected to a pressure line. However, this results in considerable disadvantages, since the elongated wedges cannot have an individually adapted system against the blow bars at the points where they are supported against the rotor disks in view of casting inaccuracies of the blow bars. In addition, they are in an exposed outdoor location Rotor arranged wedges between the rotor disks are exposed to considerable wear, so that these expensive components have to be replaced frequently in the manufacture.

Aufgabe der Erfindung ist es, die Nachteile der beiden bekannten Bauarten zu vermeiden und trotzdem ein vom Rotor unabhängiges Druckleitungssystem zu erhalten, das in der Herstellung billiger ist und durch dessen Anordnungsmerkmale unvermeidliche Beschädigungen durch Verschleiß gering gehalten werden. Dies wird erfindungsgemäß dadurch erreicht, daß das die Druckleitung enthaltende Bauteile als Druckleitungsschiene ausgebildet ist, die im Grunde der Randausschnitte des Rotors angeordnet ist, und daß die Druckelemente auf der den Keilen zugewendeten Seite der Druckleitungsschiene auf dieser angeordnet sind, so daß sie sich über die Druckleitungsschiene gegen den Rotor abstützen.The object of the invention is to avoid the disadvantages of the two known types and nevertheless to obtain a pressure line system which is independent of the rotor and which is cheaper to manufacture and whose arrangement features keep inevitable damage caused by wear and tear low. This is achieved according to the invention in that the component containing the pressure line is designed as a pressure line rail, which is arranged essentially at the edge cutouts of the rotor, and in that the pressure elements are arranged on the side of the pressure line rail facing the wedges, so that they extend over the Support the pressure line rail against the rotor.

Diese Druckleitungsschiene kann über ihre gesamte Länge ganz glatt ausgebildet sein, so daß sie aus handelsüblichem Halbzeug gefertigt sein und bei Beschädigungen leicht ausgebaut und ersetzt werden kann. Im Gegensatz zu der aus der DE-OS 35 21 588 bekannten Bauart können außerdem die Keile, wie dies an sich üblich ist, in axialer Richtung nur so lang sein wie die Rotorscheiben breit sind, so daß sie sich vollkommen im Verschleißschatten der Rotorscheiben befinden und daher gegen Verschleiß geschützt sind. Die individuelle Anlage der Keile gegen die Schlagleisten ist gewährleistet. Schließlich sind die zwischen den Rotorscheiben liegenden Teile der Druckleitungsschiene deshalb einem geringen Verschleiß ausgesetzt, weil sie weiter innen im Rotor angeordnet sind, wohin Mahlgutteile kaum einmal gelangen.This pressure line rail can be made very smooth over its entire length, so that it can be made from commercially available semi-finished products and can be easily removed and replaced if damaged. In contrast to the type known from DE-OS 35 21 588, the wedges, as is usual, can only be as long in the axial direction as the rotor disks are wide, so that they are completely in the wear shadow of the rotor disks and are therefore protected against wear. The individual placement of the wedges against the blow bars is guaranteed. After all, those are between the rotor disks lying parts of the pressure line rail are therefore exposed to little wear and tear because they are arranged further inside the rotor, where regrind parts hardly ever get.

Durch den auf die Druckleitungsschiene wirkenden Rückdruck wird die Druckleitungsschiene in ihrer Lage gehalten, so daß außer einer Sicherung in achsparalleler Richtung keine Befestigung benötigt wird. Es ist aber vorteilhaft, wenn in den Randausschnitten des Rotors miteinander fluchtende Nuten vorgesehen sind, in denen die Druckleitungsschiene beim Einsetzen in den Rotor seitlich geführt und danach in der richtigen Lage gehalten wird.Due to the back pressure acting on the pressure line rail, the pressure line rail is held in its position, so that no fastening is required except for securing in an axis-parallel direction. However, it is advantageous if grooves are aligned in the edge cutouts of the rotor, in which grooves the pressure line rail is laterally guided when inserted into the rotor and is then held in the correct position.

Damit bei Undichtigkeiten einer Druckleitung der Anpreßdruck der Druckelemente nicht beeinträchtigt wird, sind die Druckelemente über Rückschlagventile mit der Druckleitung verbunden.So that the contact pressure of the pressure elements is not impaired in the event of leaks in a pressure line, the pressure elements are connected to the pressure line via check valves.

Die Anschlußstücke für die Druckleitungen können in bekannter Weise an einem Ende jeder Druckleitungsschiene und dadurch im Bereich einer Stirnfläche des Rotors vorgesehen sein. Sie sind dann durch eine in der Gehäuseseitenwand entsprechend angeordnete verschließbare Öffnung zwecks Anschließens einer Druckpumpe oder dergleichen erreichbar.The connectors for the pressure lines can be provided in a known manner at one end of each pressure line rail and thereby in the region of an end face of the rotor. They can then be reached through an appropriately arranged closable opening in the housing side wall for the purpose of connecting a pressure pump or the like.

Die Anschlußstücke können aber auch außerhalb des Gehäuses angeordnet sein. Damit dazu nicht, wie bekannt, Bohrungen in der Rotorwelle vorgesehen werden müssen, erfolgt gemäß einer weiteren Ausgestaltung der Erfindung die Verbindung zwischen den in den Druckleitungsschienen vorgesehenen Druckleitungen und den Anschlußstücken über Bohrungen, die in einer mit der Rotorwelle umlaufenden Büchse vorgesehen sind, die die Rotorwelle im Bereich der Gehäusewand umgibt. Dabei ist in der Büchse für jede Druckleitungsschiene eine Bohrung vorgesehen, die innerhalb und außerhalb des Gehäuses je einen Anschlußstutzen aufweist. An den inneren Anschlußstutzen wird eine zu der entsprechenden Druckleitung führende Verbindungsleitung angeschlossen, z.B. ein geschützt verlegter Schlauch oder ein ebenso verlegtes Rohr, während in den äußeren Anschlußstutzen das mit einem Ventil versehene Anschlußstück eingeschraubt wird. Parallel zu diesem Anschlußstück kann auch ein unter Federwirkung stehender Druckanzeiger vorgesehen sein, der beispielsweise mit einem Sensor zusammenarbeitet, der ein Signal gibt, wenn der Druck in einer der Druckleitungen absinkt.The connectors can also be arranged outside the housing. According to a further embodiment of the invention, bores in the rotor shaft do not have to be provided for this, as is known the connection between the pressure lines provided in the pressure line rails and the connecting pieces via bores which are provided in a bushing which rotates with the rotor shaft and which surrounds the rotor shaft in the region of the housing wall. In this case, a bore is provided in the bushing for each pressure line rail, each of which has a connecting piece inside and outside the housing. A connecting line leading to the corresponding pressure line is connected to the inner connecting piece, for example a protected hose or an equally laid pipe, while the connecting piece provided with a valve is screwed into the outer connecting piece. In parallel to this connector, a spring-loaded pressure indicator can also be provided, which works, for example, with a sensor that gives a signal when the pressure in one of the pressure lines drops.

In der Zeichnung ist ein Prallmühlenrotor mit einer hydraulischen Festlegeeinrichtung für die Schlagleisten gemäß der Erfindung dargestellt, und zwar zeigt

Fig. 1
eine Stirnansicht des Rotors und
Fig. 2
einen Teil-Längsschnitt durch den Rotor nach der Linie I-II und III-IV in Fig. 1.
In the drawing, an impact mill rotor with a hydraulic fixing device for the blow bars according to the invention is shown, and shows
Fig. 1
a front view of the rotor and
Fig. 2
a partial longitudinal section through the rotor along the line I-II and III-IV in Fig. 1st

Die Prallmühle ist innerhalb ihres Gehäuses, von dem nur eine Seitenwand 1 dargestellt ist, mit einem Rotor 2 versehen, der auf einer außerhalb des Gehäuses gelagerten Welle 3 angeordnet ist. Er besteht aus mehreren Rotorscheiben 4 aus Stahlguß, die mit ihren verbreiterten Naben 5 aneinanderliegen, durch Paßstifte 6 zentriert und durch eine Ringschweißnaht 7 untereinander verbunden eine steife Trommel bilden, die nur an ihren beiden Enden mit der Welle 3 verbunden ist.The impact mill is provided within its housing, of which only one side wall 1 is shown, with a rotor 2 which is arranged on a shaft 3 mounted outside the housing. It consists of several rotor disks 4 made of cast steel, which abut one another with their widened hubs 5, by means of dowel pins 6 centered and connected to each other by a ring weld 7 form a rigid drum which is connected to the shaft 3 only at its two ends.

Jede Rotorscheibe 4 weist auf den Umfang verteilt sechs Randausschnitte 8 auf, in die Schlagleisten 9 einsetzbar sind. Auf der in Umlaufrichtung (Pfeil a) des Rotors hinteren Seite der Randausschnitte weisen die Rotorscheiben in axialer Richtung breitere Backen 10 auf, die mit Rippen 11 versehen sind, die in entsprechende Nuten der Schlagleisten 9 eingreifen. Die in Umlaufrichtung vordere Seite der Randausschnitte weist eine von der Radialen nach hinten etwas abweichende Fläche 12 auf, die mit einer Führungsnut 13 versehen ist, während in der Grundfläche 14 jedes Randausschnittes eine achsparallel verlaufende Nut 15 vorgesehen ist.Each rotor disk 4 has six edge cutouts 8 distributed over the circumference, into which blow bars 9 can be inserted. On the rear side of the edge cutouts in the direction of rotation (arrow a) of the rotor, the rotor disks in the axial direction have wider jaws 10 which are provided with ribs 11 which engage in corresponding grooves in the blow bars 9. The front side of the edge cut-outs in the circumferential direction has a surface 12 which deviates somewhat from the radial to the rear and which is provided with a guide groove 13, while in the base surface 14 of each edge cut-out there is an axially parallel groove 15.

Zwischen der Schlagleiste 9 und den vorderen Flächen 12 der Randausschnitte 8 ist in jedem Randausschnitt ein Keil 16 angeordnet, der die Schlagleiste mit den Rippen 11 der Backen 10 in Eingriff hält. In etwa radialer Richtung innerhalb der Keile 16 ist in jedem Randausschnitt 8 ein hydraulisches Druckelement 17 angeordnet, dessen Stempel 18 von innen gegen den Keil 16 anliegt.Between the blow bar 9 and the front surfaces 12 of the edge cutouts 8, a wedge 16 is arranged in each edge cutout, which holds the blow bar with the ribs 11 of the jaws 10 in engagement. In approximately radial direction within the wedges 16, a hydraulic pressure element 17 is arranged in each edge cutout 8, the plunger 18 of which rests against the wedge 16 from the inside.

Die einer Schlagleiste zugeordneten Druckelemente 17 sind auf einer Druckleitungsschiene 19 befestigt, die in den Nuten 15 geführt ist und in der eine Längsbohrung 20 und von dieser ausgehende, zu den Druckelementen 17 führende Querbohrungen 21 vorgesehen sind. Infolge dieser Anordnung stützen sich die Druckelemente 17 bei ihrer Druckausübung gegen die Keile 16 über die Druckleitungsschiene 19 nach innen gegen die Rotorscheiben 4 ab.The pressure elements 17 assigned to a blow bar are fastened on a pressure line rail 19 which is guided in the grooves 15 and in which a longitudinal bore 20 and transverse bores 21 leading from this and leading to the pressure elements 17 are provided. As a result This arrangement supports the pressure elements 17 when they exert pressure against the wedges 16 via the pressure line rail 19 inwards against the rotor disks 4.

An dem in Fig. 2 linken Ende jeder Druckleitungsschiene 19 bzw. der in dieser vorgesehenen Längsbohrung 20 kann ein mit einem Kupplungsventil versehenes Anschlußstück vorgesehen sein, das durch eine in der Gehäusewand 1 vorgesehene, verschließbare Öffnung zugänglich ist.At the left end of FIG. 2 of each pressure line rail 19 or the longitudinal bore 20 provided therein, a connector provided with a coupling valve can be provided, which is accessible through a closable opening provided in the housing wall 1.

Im dargestellten Ausführungsbeispiel sind die in den Druckleitungsschienen 19 vorgesehenen Längsbohrungen 20 durch Rohre 22 mit Bohrungen 23 verbunden, die in einer Büchse 24 vorgesehen sind, die die Rotorwelle 3 an der Stelle umschließt, wo sie durch die Gehäusewand 1 nach außen ragt. An den nach außen gehenden Mündungen der Bohrungen 23 sind die erwähnten, mit einem Kupplungsventil versehenen Anschlußstücke 25 vorgesehen, über die die Druckleitungen 23, 22, 20, 21 und damit die Druckelemente 17, z.B. mittels einer Handpumpe, unter Druck gesetzt werden können. An den Bohrungen 23 der Büchse 24 können an einem zweiten Außenauslaß Meßeinrichtungen 26 für die in den einzelnen Druckleitungssystemen herrschenden Drücke vorgesehen sein, denen ein Sensor 27 zugeordnet ist, der ein Signal gibt, wenn der Druck in einem der Systeme unzulässig absinken sollte. Zum Schutz der Rohre 22 sind Stege 28 vorgesehen, die in Umlaufrichtung des Rotors vor den Rohren angeordnet sind.In the exemplary embodiment shown, the longitudinal bores 20 provided in the pressure line rails 19 are connected by tubes 22 to bores 23 which are provided in a bushing 24 which surrounds the rotor shaft 3 at the point where it projects outward through the housing wall 1. At the outward openings of the bores 23, the mentioned, provided with a coupling valve connecting pieces 25 are provided, via which the pressure lines 23, 22, 20, 21 and thus the pressure elements 17, e.g. can be pressurized using a hand pump. At the bores 23 of the bushing 24, measuring devices 26 for the pressures prevailing in the individual pressure line systems can be provided at a second outer outlet, to which a sensor 27 is assigned which gives a signal when the pressure in one of the systems should drop inadmissibly. To protect the tubes 22, webs 28 are provided, which are arranged in front of the tubes in the direction of rotation of the rotor.

Claims (8)

Einrichtung zum Festlegen von Schlagleisten in Randausschnitten von Prallmühlenrotoren, insbesondere von Rotoren, bei denen die Randausschnitte in mit Abstand voneinander angeordneten Rotorenscheiben vorgesehen sind, wobei auf der einen Seite der Randausschnitte fest am Rotor vorgesehene Halteteile angeordnet sind, die mit entsprechenden Teilen der eingesetzten Schlagleisten in Eingriff kommen und sie dadurch gegen eine Bewegung radial nach außen festlegen, und bei der auf der anderen Seite der Randausschnitte zwischen der Seitenwand jedes Ausschnittes und der Schlagleiste Keile vorgesehen sind, die die Schlagleiste mit den Halteteilen in Eingriff halten und durch sich gegen den Rotor abstützende Druckelemente in ihrer Klemmlage gehalten werden, wobei die einer Schlagleiste zugeordneten Druckelemente über Querbohrungen mit einer gemeinsamen, an ihrem Ende mit einem Anschlußstück mit Ventil versehenen, ein Druckmittel enthaltenden Längsbohrung eines sich achsparallel erstreckenden Bauteils verbunden sind, das in den für die Schlagleiste vorgesehenen Randausschnitten des Rotors angeordnet ist, dadurch gekennzeichnet, daß das Bauteil als Druckleitungsschiene (19) ausgebildet ist, die im Grunde (14) der Randausschnitte (8) angeordnet ist, und daß die Druckelemente (17) auf der den Keilen zugewendeten Seite der Druckleitungsschiene auf dieser angeordnet sind, so daß sie sich über die Druckleitungsschiene gegen den Rotor (2) abstützen.Device for fixing blow bars in edge cutouts of impact mill rotors, in particular rotors, in which the edge cutouts are provided in rotor disks arranged at a distance from one another, holding elements which are provided on the rotor on one side of the edge cutouts and are arranged with corresponding parts of the blow bars used in Come into engagement and thereby fix them against a movement radially outwards, and in which wedges are provided on the other side of the edge cutouts between the side wall of each cutout and the blow bar, which hold the blow bar in engagement with the holding parts and are supported by themselves against the rotor Pressure elements are held in their clamped position, the pressure elements assigned to a blow bar having transverse bores with a common longitudinal bore of an axially parallel one, provided at its end with a connection piece with a valve, containing a pressure medium n component are connected, which is arranged in the edge cutouts of the rotor provided for the blow bar, characterized in that the component is designed as a pressure line rail (19) which is basically arranged (14) of the edge cutouts (8), and in that the pressure elements (17 ) are arranged on the side of the pressure line rail facing the wedges, so that they are supported against the rotor (2) via the pressure line rail. Einrichtung nach Anspruch 1, dadurch gekennzeichnet,
daß die Druckelemente (17) mit der Druckleitungsschiene (19) fest verbunden und zusammen mit dieser in den Rotor (2) ein- und ausbaubar sind.Device according to claim 1, characterized in
that the pressure elements (17) are firmly connected to the pressure line rail (19) and can be installed and removed together with the latter in the rotor (2). Einrichtung nach Anspruch 1, dadurch gekennzeichnet,
daß die Druckleitungsschiene (19) in miteinander fluchtenden Nuten (15) der Randausschnitte (8) des Rotors (2) geführt ist.Device according to claim 1, characterized in
that the pressure line rail (19) is guided in mutually aligned grooves (15) of the edge cutouts (8) of the rotor (2). Einrichtung nach Anspruch 1, dadurch gekennzeichnet,
daß die Druckelemente (17) über Rückschlagventile mit der Druckleitung (20) verbunden sind.Device according to claim 1, characterized in
that the pressure elements (17) are connected to the pressure line (20) via check valves. Einrichtung nach Anspruch 1, dadurch gekennzeichnet,
daß das Anschlußstück an einem Ende der Druckleitungsschiene (19) angeordnet ist.Device according to claim 1, characterized in
that the connector is arranged at one end of the pressure line rail (19). Einrichtung nach Anspruch 1, dadurch gekennzeichnet,
daß die in den Druckleitungsschienen (19) vorgesehenen Druckleitungen (20) mit außerhalb des Prallmühlengehäuses (1) angeordneten Anschlußstücken (25) verbunden sind, die in einer mit der Rotorwelle (3) umlaufenden Büchse (24) vorgesehen sind, die die Rotorwelle im Bereich der Gehäusewand (1) umgibt.Device according to claim 1, characterized in
that in the pressure line rails (19) provided pressure lines (20) with outside of the impact mill housing (1) arranged connecting pieces (25) are connected, which are provided in a sleeve (24) which rotates with the rotor shaft (3) and which surrounds the rotor shaft in the region of the housing wall (1). Einrichtung nach Anspruch 6, dadurch gekennzeichnet,
daß die Druckleitungen (20) mit den in der Büchse (24) vorgesehenen Bohrungen (23) mittels Schläuchen oder Rohren (22) verbunden sind.Device according to claim 6, characterized in
that the pressure lines (20) are connected to the bores (23) provided in the bushing (24) by means of hoses or pipes (22). Einrichtung nach Anspruch 6, dadurch gekennzeichnet,
daß an den außerhalb des Prallmühlengehäuses liegenden Ausmündungen der in der Büchse (24) vorgesehenen Bohrungen (23) außer den Anschlußstücken (25) Mittel (26) zur Überwachung des in den Druckleitungen (20) herrschenden Drucks vorgesehen sind.Device according to claim 6, characterized in
that means (26) for monitoring the pressure prevailing in the pressure lines (20) are provided at the openings of the bores (23) provided in the bush (24) outside the impact mill housing, in addition to the connecting pieces (25).
EP91101426A 1990-03-01 1991-02-04 Clamping device for beater bars in peripheral slots of impact-mill rotors Expired - Lifetime EP0447774B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91101426T ATE93166T1 (en) 1990-03-01 1991-02-04 DEVICE FOR FIXING BLOW BAR IN EDGE CUT-OUTS OF IMPACT CRUSHER ROTORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4006329 1990-03-01
DE4006329 1990-03-01

Publications (2)

Publication Number Publication Date
EP0447774A1 true EP0447774A1 (en) 1991-09-25
EP0447774B1 EP0447774B1 (en) 1993-08-18

Family

ID=6401142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101426A Expired - Lifetime EP0447774B1 (en) 1990-03-01 1991-02-04 Clamping device for beater bars in peripheral slots of impact-mill rotors

Country Status (9)

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US (1) US5221054A (en)
EP (1) EP0447774B1 (en)
JP (1) JP2960786B2 (en)
KR (1) KR0166974B1 (en)
AT (1) ATE93166T1 (en)
BR (1) BR9100837A (en)
CA (1) CA2037309C (en)
DE (1) DE59100297D1 (en)
ES (1) ES2045962T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581758A1 (en) * 1992-07-28 1994-02-02 Hermann Schrödl Impeller bar for impact-mill rotors
FR2998490A1 (en) * 2012-11-26 2014-05-30 Jean-Paul Jusseau Hammer for rotor of stone removal device that is utilized for removing stones from ground to make e.g. area, has distal part whose end comprises profile that forms angle, where angle is formed by ends of side of distal part

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
DE19813310C1 (en) * 1998-03-26 1999-10-28 Noell Serv & Maschtechn Gmbh Impact mill rotor
US9387640B1 (en) 2011-08-01 2016-07-12 David D. B. Rice Recycling systems and methods for plastic waste
US9022306B2 (en) * 2013-03-09 2015-05-05 David D. B. Rice Recycling systems and methods for plastic waste
DE102015213963A1 (en) * 2015-07-23 2017-01-26 Thyssenkrupp Ag Rotor for an impact crusher
CN110292973A (en) * 2019-07-26 2019-10-01 枣庄鑫金山智能机械股份有限公司 A kind of sand making machine positioning mechanism bottom plate
CN114589192B (en) * 2022-02-21 2023-03-24 许昌学院 Building rubbish resourceful crushing and recycling device

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FR2279468A1 (en) * 1974-07-27 1976-02-20 Hazemag Andreas Kg ROTOR FOR HAMMER CRUSHER
DE2850299A1 (en) * 1978-11-20 1980-05-22 Hazemag Andreas Kg Impact pulveriser rotor element fixing - has anchoring ribs carrying ledge locked by hydraulic pressure acting on plungers
FR2472416A2 (en) * 1979-12-27 1981-07-03 Fives Cail Babcock Impact crusher rotor construction - has impact elements fixed on rotor by combined pressure of spring and hydraulic cylinder
DE3521588A1 (en) * 1985-06-15 1986-12-18 O & K Orenstein & Koppel Ag, 1000 Berlin DEVICE FOR DETERMINING BLOWERS IN IMPACT MILL ROTORS

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DE2148752A1 (en) * 1971-09-30 1973-04-05 Hazemag Hartzerkleinerung DEVICE FOR FIXING BLOW BARS IN IMPACT MILL ROTORS
FR2279468A1 (en) * 1974-07-27 1976-02-20 Hazemag Andreas Kg ROTOR FOR HAMMER CRUSHER
DE2850299A1 (en) * 1978-11-20 1980-05-22 Hazemag Andreas Kg Impact pulveriser rotor element fixing - has anchoring ribs carrying ledge locked by hydraulic pressure acting on plungers
FR2472416A2 (en) * 1979-12-27 1981-07-03 Fives Cail Babcock Impact crusher rotor construction - has impact elements fixed on rotor by combined pressure of spring and hydraulic cylinder
DE3521588A1 (en) * 1985-06-15 1986-12-18 O & K Orenstein & Koppel Ag, 1000 Berlin DEVICE FOR DETERMINING BLOWERS IN IMPACT MILL ROTORS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581758A1 (en) * 1992-07-28 1994-02-02 Hermann Schrödl Impeller bar for impact-mill rotors
FR2998490A1 (en) * 2012-11-26 2014-05-30 Jean-Paul Jusseau Hammer for rotor of stone removal device that is utilized for removing stones from ground to make e.g. area, has distal part whose end comprises profile that forms angle, where angle is formed by ends of side of distal part

Also Published As

Publication number Publication date
JP2960786B2 (en) 1999-10-12
DE59100297D1 (en) 1993-09-23
ATE93166T1 (en) 1993-09-15
KR910016383A (en) 1991-11-05
ES2045962T3 (en) 1994-01-16
KR0166974B1 (en) 1999-01-15
CA2037309C (en) 2001-05-15
EP0447774B1 (en) 1993-08-18
CA2037309A1 (en) 1991-09-02
BR9100837A (en) 1991-11-05
US5221054A (en) 1993-06-22
JPH04219153A (en) 1992-08-10

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