EP3074135B1 - Comminuting device - Google Patents

Comminuting device Download PDF

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Publication number
EP3074135B1
EP3074135B1 EP15826134.7A EP15826134A EP3074135B1 EP 3074135 B1 EP3074135 B1 EP 3074135B1 EP 15826134 A EP15826134 A EP 15826134A EP 3074135 B1 EP3074135 B1 EP 3074135B1
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EP
European Patent Office
Prior art keywords
chamber wall
comminuting
lifting device
comminution
support base
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Application number
EP15826134.7A
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German (de)
French (fr)
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EP3074135A1 (en
Inventor
Oscar SCHARFE
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PMS Handelskontor GmbH
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PMS Handelskontor GmbH
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Publication of EP3074135A1 publication Critical patent/EP3074135A1/en
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Classifications

    • 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
    • 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
    • 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
    • B02C13/282—Shape or inner surface of mill-housings
    • 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
    • B02C13/286—Feeding or discharge
    • 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
    • B02C13/288—Ventilating, or influencing air circulation
    • 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
    • B02C13/31—Safety devices or measures
    • 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
    • B02C13/286—Feeding or discharge
    • B02C2013/28609—Discharge means
    • 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
    • B02C13/286—Feeding or discharge
    • B02C2013/28618—Feeding means
    • B02C2013/28672—Feed chute arrangements

Definitions

  • the invention relates to a device for the mechanical comminution of materials, in particular material conglomerates made of different materials.
  • the comminution device comprises a vertically extending comminution chamber with an upper feed side and a downwardly pointing outlet side, which comminution chamber is surrounded by an in particular circular, cylindrical and / or conically downwardly widened comminution chamber wall.
  • the comminution chamber has at least one, preferably at least two, sections which follow one another in the axial direction, in each of which at least one rotor is rotatable about a vertical axis of rotation R and is arranged coaxially to the comminution chamber.
  • the rotor carries percussion tools which, at least during operation, extend at least largely radially into the comminution chamber, e.g. percussion rods or chains.
  • the rotor is held stationary with respect to a support base of the comminution device, on which support base the comminution chamber wall is also supported.
  • Such comminution devices have the comminution chamber aligned vertically, so that the feed side faces upwards and the outlet side faces downwards.
  • a comminuting device is from DE 88 10 234.4 U known.
  • the shredding chamber wall is held adjustable in height relative to the support base in the axial direction R of the shredding device with a lifting device, which lifting device has a first working position in which the lower edge of the shredding chamber wall is arranged close to the support base or a part connected to it, in particular rests against the support base, and a maintenance position in which the lower edge of the shredding wall is raised vertically above at least one of the striking tools of the shredding device.
  • the comminution device contains a speed detection device for the rotor / rotors, which detects whether the rotors are rotating or not, which speed detection device is able to emit a release signal when all rotors are at a standstill.
  • the shredding device contains a safety circuit which only enables power to be supplied to drive the lifting device when the release signal is present.
  • Such a simple electrical device ensures the operation of the lifting device to the extent that it is impossible to lift the cylinders of the comminution chamber wall when the rotor is running. This measure also serves to a considerable extent for the operational safety of the comminuting device. Together with the electrical disconnector described below, 100% occupational safety is guaranteed.
  • the complete size reduction chamber wall is preferably held in a height-adjustable manner by the lifting device. This enables access to the rotor from all sides and thus makes maintenance and repair much easier.
  • the lifting device preferably contains at least one hydraulic cylinder, which on the one hand is fixed in place in connection with the support base, preferably is attached directly to the support base, and on the other hand engages the cylinder chamber wall or a mounting part connected to it.
  • the lifting device preferably has two to four at least predominantly vertically extending, possibly parallel hydraulic cylinders, which in the advantageous case are arranged equidistantly around a central (vertical) axis of the shredding device. In this way, the weight of the shredding chamber wall is evenly distributed over all hydraulic cylinders, which avoids uneven loading of the hydraulic cylinders or tilting of the shredding chamber wall when it is lifted.
  • the lifting device can, for example, be mounted on a support beam which is fixedly arranged with the support base, for example on the floor of a building, or is connected to the support base.
  • the lifting device is arranged or mounted on the support base, i.e. its underside is connected to the support base, which has the advantage that the support base carries all essential components of the shredding device and thus the shredding device is implemented as an integrated arrangement.
  • the lower edge of the comminuting chamber wall preferably rests on it or on the support base, with which the comminution chamber is sealed off from the support base, in which case the outlet is preferably arranged in the area or in the support base.
  • the comminution device preferably has an electrical isolating switch for its drive, which is in contact on the one hand with the support base and on the other with the dividing chamber wall or with contact elements fixedly connected to these elements.
  • the shredding device can only be put into operation when the lifting device is in the working position, which precludes the striking tools from being freely accessible when the shredding device is put into operation.
  • the motor (s) for driving the rotor (s) can therefore only start when the isolating switch is closed, which in turn is only possible when the lifting device is in the working position.
  • Such an embodiment of the invention is therefore very safe to work with.
  • the comminution chamber wall is preferably designed as a cylinder wall with a circular or polygonal base, as is usually used in comminution devices. Such a comminution chamber wall is easy to manufacture, on the one hand, and, on the other hand, can be moved in a simple manner by a lifting device between the maintenance position and the working position.
  • a feed cone is arranged in connection with the shredding chamber wall on the feed side, which cooperates with an inlet funnel, which can be moved separately by the lifting device and / or in connection with the lifting of the shredding chamber wall.
  • an inlet funnel which can be moved separately by the lifting device and / or in connection with the lifting of the shredding chamber wall.
  • an air flow device for guiding a particle / air mixture generated in the comminution chamber is arranged in connection with the comminution chamber.
  • This air flow device has at least one fan rotor which is arranged coaxially to the axis of the shredding chamber and which is driven by its own fan drive.
  • the fan rotor can thus be rotated independently of the rotors of the shredding device.
  • the fan rotor is located under the lower edge of the shredding chamber wall when it is moved from the lifting device into the Maintenance position is raised. In this way, the fan rotor of the air flow device can also be serviced in a simple manner.
  • Each rotor of the comminution device preferably has a fastening device for a detachable fastening of the striking tools, which enables simple replacement of the striking tools when the comminuting chamber wall is raised.
  • a flat distributor base is preferably arranged on or in the support base on the outlet side of the comminution chamber. This makes it possible in a simple manner to provide containers for receiving the different material fractions on the support base, so that the comminution device does not require any additional material or particle guide devices.
  • the comminution device 10 contains a circular-cylindrical comminution chamber wall 12 which surrounds a comminution chamber 14, in the vertical center axis of which two rotors 16, 18 ( Fig. 2 ) are arranged, which are preferably mounted on a support base 20 with their own drives (not shown).
  • the rotors 116, 18 rotate about the vertical axis of rotation R, which also forms the axis of the comminuting device.
  • the comminution chamber 14 extends vertically and has a supply side 15 at the top and an outlet side facing the support base 20.
  • the two rotors 16, 18, which are located in different axial sections of the comminution chamber 14, can thus be driven separately from one another both in different directions of rotation and at different speeds.
  • Each rotor 16, 18 has its own striking tools 22, 24, in the present case for example striking bars, which extend radially into the comminution chamber 14.
  • striking tools 22, 24, in the present case for example striking bars which extend radially into the comminution chamber 14.
  • chains or hinged blow bars can also be used as blow tools.
  • a fan rotor 26 is formed, which is arranged in the support base 20 under a receiving plate 30 arranged on the top of the support base 20 in order to feed the particles, in particular dust-like particles, which arise during the comminution, to an especially lateral outlet for further processing in order to separate the valuable mineral components there.
  • the outlet is preferably arranged at the same height as the fan rotor in order to effectively discharge the comminuted particles.
  • the support base 20 is held on a support frame 28 and the receiving plate 30 for receiving the lower edge of the comminuting chamber wall 12 in the FIG Fig. 1 Working position shown forms the top of the support base 20.
  • the support base 20 has a housing 34 under the receiving plate 30, which houses the drives for the rotors 16, 18 and an exhaust duct.
  • On the frame 28 of the support base 20, four hydraulic cylinders 36 are held in the corner areas, which form the active part of a lifting device.
  • the hydraulic cylinders 36 are connected on their underside to the frame 28 of the support base 20 and are connected on their upper side to horizontal support arms 40 which project radially away from the comminution chamber wall 12.
  • the four hydraulic cylinders 36 with the support arms 40 and an electrical control (not shown) form the lifting device of the comminuting device 10.
  • the grinding chamber wall 12 is located relative to the support base 20 in FIG Fig. 1 working position shown, in which the lower edge 32 of the comminution chamber wall 12 rests on the receiving plate 30 of the support base 20, preferably flush with this. In this way, it is impossible that during the operation of the comminution device comminuted material between the support base 20 and the comminution chamber wall 12 gets to the outside.
  • the comminution chamber wall 12 can be moved into the in Fig.
  • Fig. 3 shows a side view of one of the Fig. 1 and 2 largely identical second embodiment of the invention, identical or functionally identical parts being provided with the same reference numerals.
  • the shredding device 50 is off Fig. 3 differs from the embodiment of the Fig. 1 and 2
  • the top of the adjusting device 56 is horizontal Mounting arms 60 connected, which protrude radially from the inlet funnel 54.
  • the lifting device By actuating the lifting device, ie the hydraulic cylinder 36, in the maintenance position shown, not only the comminution chamber 12 but also the inlet funnel 54 and the feed cone are raised.
  • the size of the gap d between the inlet funnel and the feed cone 58 can be easily adjusted in that, as long as the lower edge 32 of the crushing chamber wall 30 rests on the receiving plate 30 of the support base 20, the adjusting device 56 can be released, in which case by the When the lifting device 36 is actuated, only the inlet funnel 54 is moved relative to the feed cone 58, which in turn is firmly connected to the comminution chamber wall 12.
  • the adjusting device 56 is fixed. Now, when the lifting device is raised, the feed cone and the comminution chamber wall 12 are moved together with the inlet funnel 54, whereby the comminution chamber wall can be moved upwards for maintenance purposes and downwards into the working position.
  • a fan rotor 62 with fan rotor blades 64 which is arranged in the region of the support base 20 and which are part of an air guiding device which is used during the in Fig. 1
  • the operation of the comminution device shown here ensures a defined air flow in the comminution chamber and a discharge of the particularly dust-like particles into an outlet 66 arranged next to it.
  • a collecting container for the comminuted material or a processing plant, for example a cyclone, can be connected to the outlet 66.

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

Description

Die Erfindung betrifft eine Vorrichtung zum mechanischen Zerkleinern von Materialien, insbesondere von Materialkonglomeraten aus unterschiedlichen Materialien. Die Zerkleinerungsvorrichtung umfasst eine sich senkrecht erstreckende Zerkleinerungskammer mit einer oberen Zufuhrseite und einer nach unten weisenden Auslassseite, welche Zerkleinerungskammer von einer insbesondere kreisrunden zylindrischen und/oder kegelförmig nach unten aufgeweiteten Zerkleinerungskammerwand umgeben ist. Die Zerkleinerungskammer weist wenigstens einen, vorzugsweise wenigstens zwei, in axialer Richtung aufeinanderfolgender Abschnitte auf, in denen jeweils mindestens ein Rotor um eine senkrechte Rotationsachse R rotierbar und koaxial zur Zerkleinerungskammer angeordnet ist. Der Rotor trägt Schlagwerkzeuge, die sich zumindest im Betrieb zumindest weitgehend radial in die Zerkleinerungskammer hineinerstrecken, z.B. Schlagstangen oder Ketten. Der Rotor ist ortsfest mit Bezug auf eine Tragbasis der Zerkleinerungsvorrichtung gehalten, auf welcher Tragbasis auch die Zerkleinerungskammerwand abgestützt ist. Derartige Zerkleinerungsvorrichtungen haben die Zerkleinerungskammer vertikal ausgerichtet, so dass die Zufuhrseite nach oben und die Auslassseite nach unten weist. Ein Problem entsteht beim Warten der Schlagwerkzeuge, die einem starken Verschleiß unterworfen sind. Ein Austausch verlangt ein umständliches und beengtes Arbeiten in der Zerkleinerungskammer.The invention relates to a device for the mechanical comminution of materials, in particular material conglomerates made of different materials. The comminution device comprises a vertically extending comminution chamber with an upper feed side and a downwardly pointing outlet side, which comminution chamber is surrounded by an in particular circular, cylindrical and / or conically downwardly widened comminution chamber wall. The comminution chamber has at least one, preferably at least two, sections which follow one another in the axial direction, in each of which at least one rotor is rotatable about a vertical axis of rotation R and is arranged coaxially to the comminution chamber. The rotor carries percussion tools which, at least during operation, extend at least largely radially into the comminution chamber, e.g. percussion rods or chains. The rotor is held stationary with respect to a support base of the comminution device, on which support base the comminution chamber wall is also supported. Such comminution devices have the comminution chamber aligned vertically, so that the feed side faces upwards and the outlet side faces downwards. A problem arises when servicing the striking tools, which are subject to heavy wear. An exchange requires laborious and cramped work in the shredding chamber.

Eine Zerkleinerungsvorrichtung gemäß dem Oberbegriff des Anspruchs 1 ist aus der DE 88 10 234.4 U bekannt.A comminuting device according to the preamble of claim 1 is from DE 88 10 234.4 U known.

Es ist Aufgabe der Erfindung, eine Zerkleinerungsvorrichtung der vorstehend genannten Art zu schaffen, die einfach zu warten ist. Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung mit den Merkmalen des Anspruches 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.It is the object of the invention to provide a comminuting device of the type mentioned above which is easy to maintain. According to the invention, this object is achieved by a device having the features of claim 1. Advantageous further developments of the invention are the subject of the dependent claims.

Erfindungsgemäß ist die Zerkleinerungskammerwand in axialer Richtung R der Zerkleinerungsvorrichtung mit einer Hebevorrichtung höhenverstellbar relativ zur Tragbasis gehalten, welche Hebevorrichtung eine erste Arbeitsposition aufweist, in welcher die Unterkante der Zerkleinerungskammerwand nahe der Tragbasis oder einem damit verbundenen Teil angeordnet ist, insbesondere an der Tragbasis anliegt, und eine Wartungsposition, in welche die Unterkante der Zerkleinerungswand vertikal über wenigstens eines der Schlagwerkzeuge der Zerkleinerungsvorrichtung angehoben ist. Damit ist es möglich, die Schlagwerkzeuge des im Zentrum der Zerkleinerungskammer befindlichen Rotors freizulegen, was es dann einem Servicetechniker auf einfache Weise ermöglicht, Reparaturen vorzunehmen oder abgenutzte Schlagwerkzeuge auszutauschen. Erfindungsgemäß enthält die Zerkleinerungsvorrichtung eine Drehzahlerfassungsvorrichtung für den Rotor/die Rotoren, die erfasst, ob sich die Rotoren drehen oder nicht, welche Drehzahlerfassungsvorrichtung in der Lage ist, ein Freigabesignal abzugeben, wenn alle Rotoren stehen. Weiterhin enthält die Zerkleinerungsvorrichtung eine Sicherheitsschaltung, die die Stromzufuhr zum Antrieb der Hebevorrichtung erst ermöglicht, wenn das Freigabesignal vorliegt. Eine derartige einfache elektrische Vorrichtung sichert den Betrieb der Hebevorrichtung dahingehen, dass ein Anheben der Zylinder der Zerkleinerungskammerwand bei laufendem Rotor unmöglich ist. Auch diese Maßnahme dient ganz erheblich der Arbeitssicherheit der Zerkleinerungsvorrichtung. Zusammen mit dem weiter unten beschriebenen elektrischen Trennschalter ist damit eine 100%ige Arbeitssicherheit gewährleistet.According to the invention, the shredding chamber wall is held adjustable in height relative to the support base in the axial direction R of the shredding device with a lifting device, which lifting device has a first working position in which the lower edge of the shredding chamber wall is arranged close to the support base or a part connected to it, in particular rests against the support base, and a maintenance position in which the lower edge of the shredding wall is raised vertically above at least one of the striking tools of the shredding device. This makes it possible to expose the impact tools of the rotor located in the center of the comminution chamber, which then enables a service technician to easily carry out repairs or replace worn impact tools. According to the invention, the comminution device contains a speed detection device for the rotor / rotors, which detects whether the rotors are rotating or not, which speed detection device is able to emit a release signal when all rotors are at a standstill. Furthermore, the shredding device contains a safety circuit which only enables power to be supplied to drive the lifting device when the release signal is present. Such a simple electrical device ensures the operation of the lifting device to the extent that it is impossible to lift the cylinders of the comminution chamber wall when the rotor is running. This measure also serves to a considerable extent for the operational safety of the comminuting device. Together with the electrical disconnector described below, 100% occupational safety is guaranteed.

Vorzugsweise ist die komplette Zerkleinerungskammerwand höhenverstellbar durch die Hebevorrichtung gehalten. Die ermöglicht den Zugriff auf den -Rotor von allen Seiten aus und erleichtert damit die Wartung und Reparatur erheblich.The complete size reduction chamber wall is preferably held in a height-adjustable manner by the lifting device. This enables access to the rotor from all sides and thus makes maintenance and repair much easier.

Vorzugsweise enthält die Hebevorrichtung wenigstens einen Hydraulikzylinder, der zum einen ortsfest in Verbindung mit der Tragbasis befestigt ist, vorzugsweise direkt an der Tragbasis befestigt ist, und zum anderen an der Zylinderkammerwand oder einem damit verbundenen Montagteil angreift. Um eine möglichst gleichmäßige und zentrische Anhebung der Zerkleinerungskammerwand zu realisieren, hat die Hebevorrichtung vorzugsweise zwei bis vier zumindest überwiegend vertikal erstreckende, ggf. parallele Hydraulikzylinder, die im vorteilhaften Fall äquidistant um eine zentrale (vertikale) Achse der Zerkleinerungsvorrichtung angeordnet sind. Auf diese Weise wird das Gewicht der Zerkleinerungskammerwand gleichmäßig auf alle Hydraulikzylinder verteilt, was eine ungleiche Belastung der Hydraulikzylinder oder ein Verkanten der Zerkleinerungskammerwand beim Anheben vermeidet. Die Hebevorrichtung kann z.B. an einem Stützträger montiert sein, der ortsfest mit der Tragbasis, z.B. auf dem Boden eines Gebäudes angeordnet oder mit der Tragbasis verbunden ist. Vorteilhafterweise ist jedoch die Hebevorrichtung auf der Tragbasis angeordnet bzw. montiert, d.h. ihre Unterseite ist mit der Tragbasis verbunden, was den Vorteil hat, dass die Tragbasis alle wesentlichen Komponenten der Zerkleinerungsvorrichtung trägt und damit die Zerkleinerungsvorrichtung als integrierte Anordnung realisiert ist.The lifting device preferably contains at least one hydraulic cylinder, which on the one hand is fixed in place in connection with the support base, preferably is attached directly to the support base, and on the other hand engages the cylinder chamber wall or a mounting part connected to it. In order to raise the wall of the shredding chamber as uniformly and centrally as possible, the lifting device preferably has two to four at least predominantly vertically extending, possibly parallel hydraulic cylinders, which in the advantageous case are arranged equidistantly around a central (vertical) axis of the shredding device. In this way, the weight of the shredding chamber wall is evenly distributed over all hydraulic cylinders, which avoids uneven loading of the hydraulic cylinders or tilting of the shredding chamber wall when it is lifted. The lifting device can, for example, be mounted on a support beam which is fixedly arranged with the support base, for example on the floor of a building, or is connected to the support base. Advantageously, however, the lifting device is arranged or mounted on the support base, i.e. its underside is connected to the support base, which has the advantage that the support base carries all essential components of the shredding device and thus the shredding device is implemented as an integrated arrangement.

In der angehobenen Wartungsstellung ist wenigstens eines der Schlagwerkzeuge, vorzugsweise jedoch alle Schlagwerkzeuge des Rotors bzw. der Rotoren freigelegt, so dass alle Schlagwerkzeuge der Zerkleinerungsvorrichtung einfach ausgewechselt werden können. In der Arbeitsstellung liegt die Unterkante der Zerkleinerungskammerwand vorzugsweise auf oder an der Tragbasis an, womit die Zerkleinerungskammer zur Tragbasis hin dicht abgeschlossen ist, wobei in diesem Fall vorzugsweise der Auslass im Bereich bzw. in der Tragbasis angeordnet ist.In the raised maintenance position, at least one of the striking tools, but preferably all of the striking tools of the rotor or rotors, is exposed so that all of the striking tools of the comminuting device can be easily exchanged. In the working position, the lower edge of the comminuting chamber wall preferably rests on it or on the support base, with which the comminution chamber is sealed off from the support base, in which case the outlet is preferably arranged in the area or in the support base.

Vorzugsweise hat die Zerkleinerungsvorrichtung einen elektrischen Trennschalter für ihren Antrieb, der zum einen mit der Tragbasis und zum anderen mit der Trennkammerwand oder mit ortsfest mit diesen Elementen verbundenen Kontaktelementen in Kontakt steht. Auf diese Weise kann man die Zerkleinerungsvorrichtung nur dann in Betrieb setzen, wenn sich die Hebevorrichtung in der Arbeitsposition befindet, was ausschließt, dass die Schlagwerkzeuge frei zugänglich sind, wenn die Zerkleinerungsvorrichtung in Betrieb gesetzt wird. Der Motor/die Motoren zum Antrieben des Rotors /der Rotoren können daher erst anlaufen, wenn der Trennschalter geschlossen ist, was wiederum nur dann möglich ist, wenn sich die Hebevorrichtung in Arbeitsposition befindet. Eine derartige Ausführung der Erfindung ist somit sehr arbeitssicher.The comminution device preferably has an electrical isolating switch for its drive, which is in contact on the one hand with the support base and on the other with the dividing chamber wall or with contact elements fixedly connected to these elements. In this way, the shredding device can only be put into operation when the lifting device is in the working position, which precludes the striking tools from being freely accessible when the shredding device is put into operation. The motor (s) for driving the rotor (s) can therefore only start when the isolating switch is closed, which in turn is only possible when the lifting device is in the working position. Such an embodiment of the invention is therefore very safe to work with.

Vorzugsweise ist die Zerkleinerungskammerwand als Zylinderwand mit kreisrunder oder polygoner Grundfläche ausgebildet, wie sie üblicherweise bei Zerkleinerungsvorrichtungen Verwendung findet. Eine derartige Zerkleinerungskammerwand ist zum einen leicht herstellbar und zum anderen in einfacher Weise durch eine Hebevorrichtung zwischen der Wartungsposition und der Arbeitsposition bewegbar.The comminution chamber wall is preferably designed as a cylinder wall with a circular or polygonal base, as is usually used in comminution devices. Such a comminution chamber wall is easy to manufacture, on the one hand, and, on the other hand, can be moved in a simple manner by a lifting device between the maintenance position and the working position.

In einer vorteilhaften Weiterbildung der Erfindung ist in Verbindung mit der Zerkleinerungskammerwand an der Zufuhrseite ein Aufgabekegel angeordnet, der mit einem Einlauftrichter zusammenwirkt, der durch die Hebevorrichtung separat und/oder in Verbindung mit dem Anheben der Zerkleinerungskammerwand bewegbar ist. Auf diese Weise kann durch die Hebevorrichtung nicht nur die Zylinderkammer die Zerkleinerungskammerwand vertikal bewegt werden, sondern auch der Einlauftrichter mit Bezug auf den Aufgabekegel, wodurch die Größe d des Einlaufspalts für das aufzugebende Gut unter Zuhilfenahme der Hebevorrichtung eingestellt werden kann. Dies ermöglicht eine einfache Steuerung der Betriebsverhältnisse der Zerkleinerungsvorrichtung.In an advantageous development of the invention, a feed cone is arranged in connection with the shredding chamber wall on the feed side, which cooperates with an inlet funnel, which can be moved separately by the lifting device and / or in connection with the lifting of the shredding chamber wall. In this way, not only the cylinder chamber and the shredding chamber wall can be moved vertically by the lifting device, but also the inlet funnel with respect to the feed cone, whereby the size d of the inlet gap for the material to be fed can be adjusted with the aid of the lifting device. This enables simple control of the operating conditions of the comminuting device.

In einer vorteilhaften Weiterbildung der Erfindung ist in Verbindung mit der Zerkleinerungskammer eine Luftströmungseinrichtung zum Führen eines in der Zerkleinerungskammer erzeugten Partikels /Luftgemisches angeordnet. Diese Luftströmungseinrichtung hat wenigstens einen koaxial zur Achse der Zerkleinerungskammer angeordneten Lüfterrotor, der über einen eigenen Lüfterantrieb angetrieben ist. Der Lüfterrotor lässt sich somit unabhängig von den Rotoren der Zerkleinerungsvorrichtung drehen. Der Lüfterrotor befindet sich dabei unter der Unterkante der Zerkleinerungskammerwand, wenn diese von der Hebevorrichtung in die Wartungsposition angehoben ist. Auf diese Weise lässt sich auch der Lüfterrotor der Luftströmungseinrichtung auf einfache Weise warten.In an advantageous development of the invention, an air flow device for guiding a particle / air mixture generated in the comminution chamber is arranged in connection with the comminution chamber. This air flow device has at least one fan rotor which is arranged coaxially to the axis of the shredding chamber and which is driven by its own fan drive. The fan rotor can thus be rotated independently of the rotors of the shredding device. The fan rotor is located under the lower edge of the shredding chamber wall when it is moved from the lifting device into the Maintenance position is raised. In this way, the fan rotor of the air flow device can also be serviced in a simple manner.

Vorzugsweise hat jeder Rotor der Zerkleinerungsvorrichtung eine Befestigungseinrichtung für eine lösbare Befestigung der Schlagwerkzeuge, was einen einfachen Austausch der Schlagwerkzeuge bei angehobener Zerkleinerungskammerwand ermöglicht.Each rotor of the comminution device preferably has a fastening device for a detachable fastening of the striking tools, which enables simple replacement of the striking tools when the comminuting chamber wall is raised.

Vorzugsweise ist an der Auslassseite der Zerkleinerungskammer ein ebener Verteilerboden an oder in der Tragbasis angeordnet. Dies erlaubt es in einfacher Weise, an der Tragbasis Behälter zum Aufnehmen der unterschiedlichen Materialfraktionen vorzusehen, so dass die Zerkleinerungsvorrichtung keine zusätzlichen Material- oder Partikelführungseinrichtungen benötigt.A flat distributor base is preferably arranged on or in the support base on the outlet side of the comminution chamber. This makes it possible in a simple manner to provide containers for receiving the different material fractions on the support base, so that the comminution device does not require any additional material or particle guide devices.

Es ist für den Fachmann offensichtlich, dass die o.g. Ausführungsformen der Erfindung in beliebiger Weise miteinander kombinierbar sind, sofern sich diese technisch nicht widersprechen.It is obvious to a person skilled in the art that the above-mentioned embodiments of the invention can be combined with one another in any way, provided that they do not contradict one another technically.

Die Erfindung wird nachfolgend beispielsweise anhand der schematischen Zeichnungen beschrieben. In dieser zeigen:

Fig. 1
eine erste Ausführungsform einer Zerkleinerungsvorrichtung mit der Hebevorrichtung in Arbeitsposition;
Fig. 2
eine perspektivische Darstellung der ersten Ausführungsform der Erfindung mit der Hebevorrichtung in Wartungsposition, und
Fig. 3
eine zweite Ausführungsform einer Zerkleinerungsvorrichtung, bei welcher sich mit der Hebevorrichtung auch der Abstand eines Einlauftrichters relativ zu einem Aufgabekegel einstellen lässt.
The invention is described below using the schematic drawings, for example. In this show:
Fig. 1
a first embodiment of a comminuting device with the lifting device in the working position;
Fig. 2
a perspective view of the first embodiment of the invention with the lifting device in the maintenance position, and
Fig. 3
a second embodiment of a comminution device, in which the lifting device can also be used to adjust the distance between an inlet funnel and a feed cone.

Die Zerkleinerungsvorrichtung 10 enthält eine kreiszylindrische Zerkleinerungskammerwand 12, die eine Zerkleinerungskammer 14 umgibt, in deren vertikaler Zentrumsachse zwei Rotoren 16, 18 (Fig. 2) angeordnet sind, die vorzugsweise auf einer Tragbasis 20 mit eigenen Antrieben (nicht dargestellt) montiert sind. Die Rotoren 116, 18 rotieren um die senkrechte Rotationsachse R, die ebenfalls die Achse der Zerkleinerungsvorrichtung bildet. Die Zerkleinerungskammer 14 erstreckt sich vertikal und hat oben eine Zufuhrseite 15 und eine zur Tragbasis 20 weisende Auslassseite. Die beiden Rotoren 16, 18, die sich in unterschiedlichen axialen Abschnitten der Zerkleinerungskammer 14 befinden, sind somit separat voneinander sowohl in unterschiedlicher Drehrichtung als auch mit unterschiedlicher Geschwindigkeit antreibbar. Jeder Rotor 16, 18 hat seine eigenen Schlagwerkzeuge 22, 24, im vorliegenden Fall beispielsweise Schlagleisten, sich radial in die Zerkleinerungskammer 14 erstrecken. Anstelle der dargelegten Schlagleisten aus Metall können als Schlagwerkzeuge auch Ketten oder schwenkbar aufgehängte Schlagstäbe verwendet werden. An der Auslassseite der Zerkleinerungskammer 14 ist ein Lüfterrotor 26 ausgebildet, der in der Tragbasis 20 unter einer an der Oberseite der Tragbasis 20 angeordneten Aufnahmeplatte 30 angeordnet ist, um dort die beim Zerkleinern entstehenden, insbesondere staubförmigen Partikel einem insbesondere seitlichen Auslass zur weiteren Verarbeitung zuzuführen, um dort die werthaltigen Mineralbestandteile abzuscheiden. Der Auslass ist vorzugsweise auf der gleichen Höhe wie der Lüfterrotor angeordnet, um die zerkleinerten Partikel wirkungsvoll abzuführen. Die Tragbasis 20 ist auf einem Traggestell 28 gehalten und die Aufnahmeplatte 30 zur Aufnahme der Unterkante der Zerkleinerungskammerwand 12 in der in Fig. 1 dargestellten Arbeitsstellung bildet die Oberseite der Tragbasis 20. Die Tragbasis 20 hat unter der Aufnahmeplatte 30 ein Gehäuse 34, welches die Antriebe für die Rotoren 16, 18 und einen Abluftkanal beherbergt. An dem Rahmen 28 der Tragbasis 20 sind in den Eckbereichen vier Hydraulikzylinder 36 gehalten, die den aktiven Teil einer Hebevorrichtung bilden. Die Hydraulikzylinder 36 sind an ihrer Unterseite mit dem Rahmen 28 der Tragbasis 20 verbunden und sind an ihrer Oberseite mit horizontalen Tragarmen 40 verbunden, die radial von der Zerkleinerungskammerwand 12 weg stehen. Die vier Hydraulikzylinder 36 bilden mit den Tragarmen 40 und einer nicht dargestellten elektrischen Steuerung die Hebevorrichtung der Zerkleinerungsvorrichtung 10.The comminution device 10 contains a circular-cylindrical comminution chamber wall 12 which surrounds a comminution chamber 14, in the vertical center axis of which two rotors 16, 18 ( Fig. 2 ) are arranged, which are preferably mounted on a support base 20 with their own drives (not shown). The rotors 116, 18 rotate about the vertical axis of rotation R, which also forms the axis of the comminuting device. The comminution chamber 14 extends vertically and has a supply side 15 at the top and an outlet side facing the support base 20. The two rotors 16, 18, which are located in different axial sections of the comminution chamber 14, can thus be driven separately from one another both in different directions of rotation and at different speeds. Each rotor 16, 18 has its own striking tools 22, 24, in the present case for example striking bars, which extend radially into the comminution chamber 14. Instead of the metal blow bars set out above, chains or hinged blow bars can also be used as blow tools. On the outlet side of the comminution chamber 14, a fan rotor 26 is formed, which is arranged in the support base 20 under a receiving plate 30 arranged on the top of the support base 20 in order to feed the particles, in particular dust-like particles, which arise during the comminution, to an especially lateral outlet for further processing in order to separate the valuable mineral components there. The outlet is preferably arranged at the same height as the fan rotor in order to effectively discharge the comminuted particles. The support base 20 is held on a support frame 28 and the receiving plate 30 for receiving the lower edge of the comminuting chamber wall 12 in the FIG Fig. 1 Working position shown forms the top of the support base 20. The The support base 20 has a housing 34 under the receiving plate 30, which houses the drives for the rotors 16, 18 and an exhaust duct. On the frame 28 of the support base 20, four hydraulic cylinders 36 are held in the corner areas, which form the active part of a lifting device. The hydraulic cylinders 36 are connected on their underside to the frame 28 of the support base 20 and are connected on their upper side to horizontal support arms 40 which project radially away from the comminution chamber wall 12. The four hydraulic cylinders 36 with the support arms 40 and an electrical control (not shown) form the lifting device of the comminuting device 10.

Während des Betriebs befindet sich die Zerkleinerungskammerwand 12 relativ zur Tragbasis 20 in der Fig. 1 dargestellten Arbeitsstellung, in welcher die Unterkante 32 der Zerkleinerungskammerwand 12 auf der Aufnahmeplatte 30 der Tragbasis 20 aufliegt, vorzugsweise dicht mit dieser abschließt. Auf diese Weise ist es ausgeschlossen, dass während der Arbeit der Zerkleinerungsvorrichtung zerkleinertes Material zwischen Tragbasis 20 und Zerkleinerungskammerwand 12 nach außen gelangt. Um das Elemente in der Zerkleinerungskammer 14 zu warten, z.B. die Rotoren 16, 18 und die zugehörigen Schlagwerkzeuge 22, 24 lässt sich über die vier Hydraulikzylinder 36 die Zerkleinerungskammerwand 12 in die in Fig. 2 dargestellte Wartungsposition anheben, in welcher alle Schlagwerkzeuge 22, 24 der beiden Rotoren 16, 18 frei zugänglich sind, da sich die Unterkante 32 der Zerkleinerungskammerwand 12 vertikal über den obersten Schlagwerkzeugen 22 befindet. Diese Stellung ermöglicht damit einen sehr guten Zugriff auf die Rotoren 16, 18, als auch auf die Schlagwerkzeuge und somit einen leichten Austausch defekter Schlagwerkzeuge oder eine Wartung abgenutzter Schlagwerkzeuge.During operation, the grinding chamber wall 12 is located relative to the support base 20 in FIG Fig. 1 working position shown, in which the lower edge 32 of the comminution chamber wall 12 rests on the receiving plate 30 of the support base 20, preferably flush with this. In this way, it is impossible that during the operation of the comminution device comminuted material between the support base 20 and the comminution chamber wall 12 gets to the outside. In order to service the elements in the comminution chamber 14, for example the rotors 16, 18 and the associated impact tools 22, 24, the comminution chamber wall 12 can be moved into the in Fig. 2 Lift the maintenance position shown, in which all striking tools 22, 24 of the two rotors 16, 18 are freely accessible, since the lower edge 32 of the comminuting chamber wall 12 is located vertically above the uppermost striking tools 22. This position thus enables very good access to the rotors 16, 18 as well as to the striking tools and thus easy replacement of defective striking tools or maintenance of worn striking tools.

Fig. 3 zeigt eine Seitenansicht einer zu den Fig. 1 und 2 weitgehend identischen zweiten Ausführungsform der Erfindung, wobei identische oder funktionsgleiche Teile mit den gleichen Bezugszeichen versehen sind. Die Zerkleinerungsvorrichtung 50 aus Fig. 3 unterscheidet sich von der Ausführungsform der Fig. 1 und 2 daran, dass sich an der Zufuhrseite 52 der Zerkleinerungsvorrichtung 50 ein Einlauftrichter 54 befindet, der über eine Stellvorrichtung 56 variabel in seinem Abstand gegenüber einem Aufgabekegel 58 einstellbar ist, welcher fest mit der Zerkleinerungskammerwand 12 verbunden oder ve3rbindbar ist. Die Oberseite der Stellvorrichtung 56 ist mit horizontalen Montagearmen 60 verbunden, welche radial von dem Einlauftrichter 54 abstehen. Durch eine Betätigung der Hebevorrichtung, d.h. der Hydraulikzylinder 36, in die dargestellte Wartungsposition wird somit nicht nur die Zerkleinerungskammer 12 sondern auch der Einlauftrichter 54 und der Aufgabekegel angehoben. Die Größe des Spaltes d zwischen dem Einlauftrichter und dem Aufgabekegel 58 lässt sich in einfacher Weise dadurch einstellen, dass, solange die Unterkante 32 der Zerkleinerungskammerwand 30 auf der Aufnahmeplatte 30 der Tragbasis 20 aufliegt, die Stellvorrichtung 56 freigegeben werden kann, in welchem Fall durch die Betätigung der Hebevorrichtung 36 nur der Einlauftrichter 54 gegenüber dem Aufgabekegel 58 bewegt wird, welche wiederum fest mit der Zerkleinerungskammerwand 12 verbunden ist. Fig. 3 shows a side view of one of the Fig. 1 and 2 largely identical second embodiment of the invention, identical or functionally identical parts being provided with the same reference numerals. The shredding device 50 is off Fig. 3 differs from the embodiment of the Fig. 1 and 2 The fact that an inlet funnel 54 is located on the feed side 52 of the comminution device 50, which can be variably adjusted in its distance from a feed cone 58 via an adjusting device 56, which is firmly connected or can be connected to the comminution chamber wall 12. The top of the adjusting device 56 is horizontal Mounting arms 60 connected, which protrude radially from the inlet funnel 54. By actuating the lifting device, ie the hydraulic cylinder 36, in the maintenance position shown, not only the comminution chamber 12 but also the inlet funnel 54 and the feed cone are raised. The size of the gap d between the inlet funnel and the feed cone 58 can be easily adjusted in that, as long as the lower edge 32 of the crushing chamber wall 30 rests on the receiving plate 30 of the support base 20, the adjusting device 56 can be released, in which case by the When the lifting device 36 is actuated, only the inlet funnel 54 is moved relative to the feed cone 58, which in turn is firmly connected to the comminution chamber wall 12.

Nachdem somit durch Betätigung der Hebevorrichtung der Einlaufspalt d auf eine gewünschte Größe eingestellt worden ist, wird die Stellvorrichtung 56 festgelegt. Nun wird mit einem Anheben der Hebevorrichtung auch der Aufgabekegel und die Zerkleinerungskammerwand 12 zusammen mit dem Einlauftrichter 54 bewegt, wodurch die Zerkleinerungskammerwand für Wartungszwecke nach oben und in die Arbeitsposition nach unten bewegt werden kann.After the inlet gap d has thus been set to a desired size by actuating the lifting device, the adjusting device 56 is fixed. Now, when the lifting device is raised, the feed cone and the comminution chamber wall 12 are moved together with the inlet funnel 54, whereby the comminution chamber wall can be moved upwards for maintenance purposes and downwards into the working position.

Die Ausführungsform 50 aus Fig. 3 zeigt des Weiteren neben den beiden Rotoren 16, 18 und den zugeordneten Schlagwerkzeugen 22, 24 noch einen im Bereich der Tragbasis 20 angeordneten Lüfterrotor 62 mit Lüfterrotorblättern 64, die Bestandteil einer Luftführungseinrichtung sind, die während des in Fig. 1 dargestellten Betriebs der Zerkleinerungsvorrichtung für einen definiert eingestellten Luftstrom in der Zerkleinerungskammer und für eine Abfuhr der insbesondere staubförmigen Partikel in einen daneben angeordneten Auslass 66 sorgt. An dem Auslass 66 kann sich ein Auffangcontainer für das zerkleinerte Gut oder eine Aufbereitungsanlage, z.B. ein Zyklon anschließen.The embodiment 50 from Fig. 3 Furthermore, in addition to the two rotors 16, 18 and the associated striking tools 22, 24, a fan rotor 62 with fan rotor blades 64 which is arranged in the region of the support base 20 and which are part of an air guiding device which is used during the in Fig. 1 The operation of the comminution device shown here ensures a defined air flow in the comminution chamber and a discharge of the particularly dust-like particles into an outlet 66 arranged next to it. A collecting container for the comminuted material or a processing plant, for example a cyclone, can be connected to the outlet 66.

Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt, sondern kann innerhalb des Schutzbereichs der nachfolgenden Ansprüche variiert werden.The invention is not restricted to the exemplary embodiments shown, but can be varied within the scope of the following claims.

BezugszeichenlisteList of reference symbols

1010
Zerkleinerungsvorrichtung (erste Ausführungsform)Crushing device (first embodiment)
1212th
ZerkleinerungskammerwandShredding chamber wall
1414th
ZerkleinerungskammerShredding chamber
1515th
ZufuhrseiteFeed side
1616
oberer Rotorupper rotor
1818th
unterer Rotorlower rotor
2020th
TragbasisSupport base
2222nd
obere Schlagwerkzeugeupper striking tools
2424
untere Schlagwerkzeugelower striking tools
2626th
LüfterrotorFan rotor
2828
Rahmenframe
3030th
AufnahmeplatteMounting plate
3232
Unterkante der ZerkleinerungskammerwandLower edge of the shredding chamber wall
3434
Gehäusecasing
3636
HydraulikzylinderHydraulic cylinder
4040
TragarmeSupport arms
5050
Zerkleinerungsvorrichtung (zweite Ausführungsform)Crushing device (second embodiment)
5252
ZufuhrseiteFeed side
5454
EinlauftrichterInlet funnel
5656
StellvorrichtungAdjusting device
5858
AufgabekegelFeeding cone
6060
MontagearmeMounting arms
6262
LüfterrotorFan rotor
6464
LüfterrotorblätterFan rotor blades
6666
AuslassOutlet

Claims (16)

  1. Device (10; 50) for mechanically comminuting materials, comprising at least one rotor (16, 18) rotating about a vertical axis of rotation (R), which is arranged in a comminution chamber and which, at least during operation, has impact tools (22, 24) extending at least substantially radially into the comminution chamber, wherein the comminuting chamber (14) is surrounded by a vertically extending, in particular circular cylindrical and/or conically downwardly widened comminuting chamber wall (12), which comminuting chamber has a feed side (15) at its upper end face and an outlet side at its lower end face; wherein the rotor (16, 18) is held at its lower end stationary with respect to a support base (20) of the apparatus and the comminuting chamber wall is supported on the support base, the comminuting chamber wall being held vertically adjustable relative to the support base (20) in the direction of the rotor axis (R) by a lifting device, the lifting device (36) having a working position in which the lower edge of the comminuting chamber wall is arranged close to the support base (20) or a part connected thereto, characterized in that the lifting device (36) has a maintenance position in which the lower edge (32) of the comminuting chamber wall (12) is raised vertically above at least one of the impact tools (22, 24), and in that it comprises a speed detection device for the rotors (16, 18) which emits an enabling signal when all the rotors are at a standstill, and a safety circuit which does not allow power to be supplied to a drive of the lifting device (36) until the enabling signal is present.
  2. The device (10; 50) according to claim 1, characterized in that the lifting device (36) comprises at least one hydraulic cylinder.
  3. The device (10; 50) according to claim 2, characterized in that the lifting device (36) comprises two to four vertically extending parallel hydraulic cylinders.
  4. The device (10; 50) according to claim 3, characterized in that the hydraulic cylinders (36) are arranged equidistantly around the central axis of the comminuting device.
  5. The device (10; 50) according to any of the preceding claims, characterized in that the underside of the lifting device (36) is connected to the support base (20).
  6. The device (10; 50) according to one of the preceding claims, characterised in that it comprises an electrical circuit breaker for driving the rotors (16, 18), which is in contact, on the one hand, with the support base (20) or a part fixedly connected thereto and, on the other hand, with the comminuting chamber wall (12) or a part fixedly connected thereto.
  7. The device (10; 50) according to one of the preceding claims, characterized in that the comminuting chamber wall (12) is a cylindrical wall with a circular or polygonal base.
  8. The device (10; 50) according to one of the preceding claims, characterized in that the comminuting chamber (14) extends vertically with the feed side (15) at the top and the discharge side at the bottom.
  9. The device (10; 50) according to one of the preceding claims, characterized in that in connection with the comminuting chamber (14) on the feed side (15) a feed cone (58) is arranged, which is movable separately by means of the lifting device (36) and/or in connection with the comminuting chamber wall (12).
  10. The device (10; 50) according to claim 9, characterized in that an inlet funnel (54) is connected to the comminution chamber wall (12) on the feed side (15) thereof, and that the distance (d) between the inlet funnel and the feed cone is adjustable by an adjusting device (56) by means of the actuation of the lifting device (36).
  11. The device (10; 50) according to one of the preceding claims, characterized in that an air flow device (62, 64) is arranged in connection with the comminution chamber (14) for guiding a particle/air mixture produced in the comminution chamber (14), which air flow device comprises at least one fan rotor (62) arranged coaxially to the axis of the comminution chamber, which is driven (25) by its own fan drive to rotate the fan rotor (62) independently of the rotors (16, 18), the fan rotor being located below the lower edge (32) of the comminution chamber wall (12) when the latter is raised in the maintenance position of the lifting device (36).
  12. The device (10; 50) according to one of the preceding claims, characterized in that the lower edge (32) of the comminuting chamber wall (12) is raised above the attachment point of the impact tools (22, 24) of all rotors (16, 18) in the maintenance position of the lifting device (36).
  13. The device (10; 50) according to one of the preceding claims, characterized in that the rotors (16, 18) are held on the support base (20).
  14. The device (10; 50) according to one of the preceding claims, characterized in that the lower edge (32) of the comminuting chamber wall (12) rests against the support base (20) in the working position of the lifting device (36).
  15. The device (10; 50) according to one of the preceding claims, characterized in that the comminution chamber (14) has at least two sections which follow one another in the axial direction and in each of which at least one rotor (16, 18) is arranged coaxially with the comminution chamber, each rotor having impact tools (22, 24) extending at least largely radially into the comminution chamber at least during operation.
  16. The device (10; 50) according to one of the preceding claims, characterised in that the complete comminution chamber wall is held in a height-adjustable manner by the lifting device.
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RU2654255C1 (en) 2018-05-17
BR112017011751B1 (en) 2021-06-08
US11278907B2 (en) 2022-03-22
EP3074135A1 (en) 2016-10-05
US20180339297A1 (en) 2018-11-29
JP2018505054A (en) 2018-02-22
ES2881864T3 (en) 2021-11-30
CA2966255A1 (en) 2016-08-25
MX2017006681A (en) 2017-10-04
CN107249747A (en) 2017-10-13
CL2017001246A1 (en) 2017-11-24
CA2966255C (en) 2018-09-25
CN107249747B (en) 2019-04-23
PE20171115A1 (en) 2017-08-07
WO2016131433A1 (en) 2016-08-25
JP6370499B2 (en) 2018-08-08
BR112017011751A2 (en) 2018-02-27
AU2015383637A1 (en) 2017-05-25
AU2015383637B2 (en) 2018-02-22

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