EP1115492B1 - Vertical rotor mill - Google Patents

Vertical rotor mill Download PDF

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Publication number
EP1115492B1
EP1115492B1 EP98942449A EP98942449A EP1115492B1 EP 1115492 B1 EP1115492 B1 EP 1115492B1 EP 98942449 A EP98942449 A EP 98942449A EP 98942449 A EP98942449 A EP 98942449A EP 1115492 B1 EP1115492 B1 EP 1115492B1
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EP
European Patent Office
Prior art keywords
vertical rotor
rotor mill
sieve
mill according
cone
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EP98942449A
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German (de)
French (fr)
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EP1115492A1 (en
Inventor
Guido Kraemer
Laszlo Jud
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Buehler AG
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Buehler AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • 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
    • B02C13/26—Details
    • B02C13/282—Shape or inner surface of mill-housings
    • B02C13/284—Built-in screens

Definitions

  • the invention relates to a vertical rotor mill, in particular a hammer or Impact grinder for grinding granular goods using impact tools that work on one rotatable, vertically arranged rotor are attached.
  • EP-A-556645 describes an impact mill with a housing in which a vertical standing rotor provided with striking tools is arranged, on which Top of the housing at least one inlet opening for the material to be ground is provided above the striking tools.
  • the striking tools are in the direction the axis of rotation arranged in groups, with each group in the same, perpendicular to the axis of rotation. At least the radially outside The ends of the striking tools of the uppermost group are less far out than those of at least one lower group.
  • the hammer mill is operated by a forced air circulation.
  • the housing of the impact mill consists of a lower, conical collecting part and an upper, cylindrical grinding housing part.
  • the grinding housing part in turn surrounds a grinding chamber, a sieve and a fine part outlet area.
  • Vibration-damping seals are provided between the two housing parts.
  • CH-A-686875 proposes form the top of the grinder housing part in the form of an upper part that on whose outer circumference at least three vibrating dampers with spring elements located therein are evenly distributed, and that continues to be a flange of the grinder housing part is flexibly connected to the upper part.
  • the connection between The height of the grinder housing part and the upper part (air gap) can be adjusted.
  • the emerging Air gap is closed by a seal.
  • One stop is selected so that the cup-shaped sieve on the rotor past the mill can be removed and the other stop is reached when the rotor is surrounded by the screen jacket and the outer edge of the screen jacket on one appropriate sealing surface is present. Access to the sieve or the change the same must be done via or through a door in the mill housing, which is not only is complex and cumbersome, but also the sanitation and hazard safety can affect.
  • the invention is therefore based on the problem of access to the sieve and To simplify the impact tools of a vertical rotor mill and the operating characteristics to improve and expand the scope of such mills. This object is achieved by means of the characterizing features of the claim. advantageous Refinements result from the subclaims.
  • the lower part of the housing of the vertical rotor mill is in the form of a lowerable Cone formed, which surrounds the sieve. When lowered, it can Sieve can be moved analogous to EP-B-525362.
  • the strainer basket itself is in one piece or made in several parts and the sieve bottom is preferably the same for all sieve perforations educated.
  • the sieves themselves have a special division and direction (in the direction of rotation overlapping) perforated, which improves the grinding.
  • the motor flange is used to improve vibration damping and reduce noise arranged on or in damping elements or a damping sleeve.
  • a vertical rotor mill 1 consists essentially of a supporting frame 2, which is connected to a base plate 3, on the top of which a motor 4 is seated, which serves as a drive for a rotor 7, which is about a substantially vertical axis of rotation rotates, and a cone 6 in which the rotor 7 is arranged.
  • the engine 4 sits in one Damping sleeve 24 or on damping elements 26.
  • On the base plate 3 is still a material feed 5 is arranged.
  • striking tools 8 are arranged radially on the outside, which essentially pivot axes parallel to the axis of rotation are pivotally attached.
  • the striking tools 8 are preferably arranged in groups in the direction of the axis of rotation, wherein the radially outer ends of the striking tools 8 of the individual groups alternate are far radially outside and continue to the striking tools 8 in one Group are arranged eccentrically.
  • the striking tools 8 of a group are thus provided with different radii in relation to the radially outer ends.
  • a sensor 29 is provided on the drive train to detect imbalances. Compared to the prior art, a larger number of striking tools is normally used 8 used (4 to 12 stations are possible).
  • rotor 7 and striking tools 8 are laterally and from a screen 9 surrounded from below.
  • It is preferably a cylindrical beaker sieve, consisting of one or more parts perforated screen jacket 10 and a perforated Sieve plate 11.
  • the perforation of the sieve plate 11 is even in different applications preferably the same, which is a noticeable simplification of spare parts inventory as well as the grinding itself.
  • a special perforation enables at least approx. 50% open screen area.
  • the screen jacket 10 preferably consists of only one as a screen basket Part. A multi-part version is also possible, especially for reduction of the transport volume.
  • the screen jacket has 10 specifically spaced bolts 31 (depending on the hole size). through another sensor, here a path potentiometer 32, a presence or Distance measurement, on the basis of which a sieve is identified and assigned, also in In relation to the regrind.
  • straight guides 13 are provided, which with at least one lifting device, preferably a pneumatic cylinder 14 connected are.
  • the connection between cone 6 and straight guide 13 is via connecting parts 16 and the connection between cone 6 and sieve 9 is made via connecting parts 15.
  • the vertical travel from cone 6 is up through sieve jacket 10 and bounded at the bottom by the cylinder 14.
  • the screen 9 and the striking tools 8 and the interior are thereby the cone 6 is freely accessible and on the other hand there is access to the sieve 9 and rotor 7 excluded in operation.
  • the interior of the cone 6 is divided into two sub-spaces by the sieve 9, one Grinding chamber 19, in which the rotor 7 is located, and a collecting chamber 20, in which the ground good collects.
  • the cone 6 and the base plate 3, as well as the grinding chamber 19 are in this embodiment Shockproof design.
  • the material to be ground is fed in via a feed device, material feed 5.
  • the material reaches the nozzle 22 and at least one inlet opening 23 in the Grinding room 19.
  • Upstream of the material feed 5 are common Heavy part separators or magnetic separators, such as those of EP-B-556645 or can be found in CH-A-686875.
  • a meterable and continuous flow of material is added by means of the feed device the inlet openings 23 guaranteed.
  • a pressure equalization opening 25 is provided in order to prevent overpressure or underpressure in the Avoid grinding chamber (collecting room 19).
  • a regulation of the pressure conditions is carried out by means of pressure sensor 33.
  • the sensors 29, 33 can be used to monitor the Operating state of the mill 1, e.g. regarding vibrations, bearing damage, racket breakage or foreign parts.
  • the nozzles 22 have a round cross section and are light when worn interchangeable.
  • the flange 27 of the motor 4 is on damping elements 26 or elastically supported in a flange-shaped damping sleeve 24.
  • the frame 2 is preferably by means of a base plate 17 on an intermediate floor 28 Mill building arranged.
  • the bottom plate 17 has an opening that is concentric is located to the outlet opening 21.
  • the opening of the base plate 17 has one inflatable telescopic seal 18 which surrounds the outlet opening 21 and which in the inflated Condition the opening seals. Before a vertical movement of the cone 6, the telescopic seal 18 is vented.

Abstract

The invention relates to a vertical rotor mill, especially to an impact pulverizer or to a hammer mill for grinding granular material using impact tools (8). Said tools are fixed to a rotating, vertically arranged rotor (7) which is enclosed by a screen (9). The grinding chamber (19) is in turn enclosed by a conic housing (6). The aim of the invention is to simplify access to the screen (9) and to the impact tools (8), and to improve the operating characteristics. To this end, the cone (6) can be lowered together with the screen (9).

Description

Die Erfindung betrifft eine Vertikalrotormühle, insbesondere eine Hammer- bzw. Schlagmühle zum Vermahlen körniger Güter mittels Schlagwerkzeugen, die an einem drehbaren, vertikal angeordneten Rotor befestigt sind.The invention relates to a vertical rotor mill, in particular a hammer or Impact grinder for grinding granular goods using impact tools that work on one rotatable, vertically arranged rotor are attached.

Hammermühlen bzw. Schlagmühlen mit horizontal oder vertikal angeordneten Rotordrehachsen sind in verschiedenen Ausführungen bekannt. So beschreibt die DE-U-8810234 eine Hammermühle mit einer senkrecht stehenden Antriebswelle und untenliegendem Antrieb. Die DEOS 3636869 zeigt eine Schlagleistenmühle mit einem, um seine senkrechte Achse drehbar angeordneten Schlagleistenrotor. Das zu vermahlende Gut wird hierbei von einer, auf der Oberseite der Mühle angeordneten Speisevorrichtung zugeführt.Hammer mills or impact mills with horizontally or vertically arranged rotor axes of rotation are known in different versions. This is how DE-U-8810234 describes it a hammer mill with a vertical drive shaft and one below Drive. The DEOS 3636869 shows a blow bar mill with a to its vertical axis rotatable blow bar rotor. The thing to be ground This is good from a feeding device arranged on the top of the mill fed.

Die EP-A-556645 beschreibt eine Schlagmühle mit einem Gehäuse, in dem ein senkrecht stehender, mit Schlagwerkzeugen versehener Rotor angeordnet ist, wobei auf der Oberseite des Gehäuses mindestens eine Einlassöffnung für das zu vermahlende Gut oberhalb der Schlagwerkzeuge vorgesehen ist. Die Schlagwerkzeuge sind in Richtung der Drehachse in Gruppen angeordnet, wobei die jeweils einer Gruppe in derselben, senkrecht zur Drehachse stehenden Ebene liegen. Zumindest die radial aussenliegenden Enden der Schlagwerkzeuge der obersten Gruppe weniger weit aussen liegen als jene mindestens einer unteren Gruppe.EP-A-556645 describes an impact mill with a housing in which a vertical standing rotor provided with striking tools is arranged, on which Top of the housing at least one inlet opening for the material to be ground is provided above the striking tools. The striking tools are in the direction the axis of rotation arranged in groups, with each group in the same, perpendicular to the axis of rotation. At least the radially outside The ends of the striking tools of the uppermost group are less far out than those of at least one lower group.

Die Schlagmühle ist umluftbetrieben. Das Gehäuse der Schlagmühle besteht aus einem unteren, konischen Sammelteil und einem oberen, zylindrischen Mahlgehäuseteil. Das Mahlgehäuseteil wiederum umgibt einen Mahlraum, ein Sieb und einen Feinteilaustrittsbereich.The hammer mill is operated by a forced air circulation. The housing of the impact mill consists of a lower, conical collecting part and an upper, cylindrical grinding housing part. The The grinding housing part in turn surrounds a grinding chamber, a sieve and a fine part outlet area.

Zwischen den beiden Gehäuseteilen sind vibrationsdämpfende Dichtungen vorgesehen. Um die Vibrationsdämpfung zu verbessern, wird in der CH-A-686875 vorgeschlagen, die Oberseite des Mahlgehäuseteils so in Form eines Oberteiles auszubilden, dass auf dessen äusserem Umfang mindestens drei Vibrodämpfer mit darin befindlichen Federelementen gleichmässig verteilt angeordnet sind, und dass weiterhin ein Flansch des Mahlgehäuseteiles mit dem Oberteil flexibel verbunden ist. Die Verbindung zwischen Mahlgehäuseteil und Oberteil ist in ihrer Höhe (Luftspalt) verstellbar. Der entstehende Luftspalt ist mittels einer Dichtung verschlossen.Vibration-damping seals are provided between the two housing parts. In order to improve vibration damping, CH-A-686875 proposes form the top of the grinder housing part in the form of an upper part that on whose outer circumference at least three vibrating dampers with spring elements located therein are evenly distributed, and that continues to be a flange of the grinder housing part is flexibly connected to the upper part. The connection between The height of the grinder housing part and the upper part (air gap) can be adjusted. The emerging Air gap is closed by a seal.

Bekannt sind ebenso Schlagmühlen mit becherförmigen Sieben, z. B. gemäss der US-PS 3169711 und 4243180. Die Stimfläche des Siebes ist vertikal bzw. horizontal ausgerichtet. Das Montieren und Entfernen der Siebe ist in beiden Fällen aufwendig, weil eine Vielzahl von Teilen entfernt werden muss. Bei grossen Hammermühlen ist das Sieb schwer und hat eine grosse Mantelwandhöhe, so dass es nur mühsam ohne Verkantung über den Rotor bringbar ist. In der EP-B-525362 wird eine Vorrichtung vorgeschlagen, nach der das Montieren und Demontieren des Siebes schnell und gefahrlos erfolgen soll. Hierzu sind mindestens zwei, über den Siebumfang verteilte Halterungen vorgesehen, welche mittels Geradführung das Sieb zwischen zwei Anschlägen verschieben können. Der eine Anschlag ist so gewählt, dass das becherförmige Sieb am Rotor vorbei der Mühle entnommen werden kann und der andere Anschlag ist erreicht, wenn der Rotor vom Siebmantel umgeben ist und der äussere Rand des Siebmantels an einer entsprechenden Dichtungsfläche ansteht. Der Zugang zum Sieb bzw. der Wechsel desselben muss über bzw. durch eine Tür im Mühlengehäuse erfolgen, was nicht nur aufwendig und umständlich ist, sondern auch die Sanitation und die Gefahrensicherheit beeinträchtigen kann.Knock mills with cup-shaped sieves, e.g. B. according to the US-PS 3169711 and 4243180. The face of the sieve is aligned vertically and horizontally. The assembly and removal of the screens is complex in both cases because one Large number of parts must be removed. With large hammer mills the sieve is heavy and has a large wall height, so that it is difficult without tilting can be brought over the rotor. EP-B-525362 proposes a device after which the sieve can be assembled and disassembled quickly and safely should. For this purpose, at least two brackets distributed over the screen circumference are provided, which move the screen between two stops using a straight guide can. One stop is selected so that the cup-shaped sieve on the rotor past the mill can be removed and the other stop is reached when the rotor is surrounded by the screen jacket and the outer edge of the screen jacket on one appropriate sealing surface is present. Access to the sieve or the change the same must be done via or through a door in the mill housing, which is not only is complex and cumbersome, but also the sanitation and hazard safety can affect.

Der Erfindung liegt daher die Aufgabe zugrunde, den Zugang zum Sieb und zu den Schlagwerkzeugen einer Vertikalrotormühle zu vereinfachen sowie die Betriebseigenschaften zu verbessern und den Anwendungsbereich derartiger Mühlen zu erweitern. Diese Aufgabe ist mittels der kennzeichnenden Merkmale des Anspruchs gelöst. Vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.The invention is therefore based on the problem of access to the sieve and To simplify the impact tools of a vertical rotor mill and the operating characteristics to improve and expand the scope of such mills. This object is achieved by means of the characterizing features of the claim. advantageous Refinements result from the subclaims.

Der untere Teil des Gehäuses der Vertikalrotormühle ist in Form eines absenkbaren Konusses ausgebildet, welcher das Sieb umgibt. Im abgesenkten Zustand kann das Sieb analog zur EP-B-525362 verschoben werden. Der Siebkorb selbst ist einteilig oder mehrteilig ausgeführt und der Siebboden ist bevorzugt bei allen Sieblochungen gleich ausgebildet. Die Siebe selbst sind mit spezieller Teilung und Richtung (in Laufrichtung überlappend) gelocht, wodurch die Vermahlung verbessert wird.The lower part of the housing of the vertical rotor mill is in the form of a lowerable Cone formed, which surrounds the sieve. When lowered, it can Sieve can be moved analogous to EP-B-525362. The strainer basket itself is in one piece or made in several parts and the sieve bottom is preferably the same for all sieve perforations educated. The sieves themselves have a special division and direction (in the direction of rotation overlapping) perforated, which improves the grinding.

Zur Verbesserung der Vibrationsdämpfung und zur Lärmminderung ist der Motorflansch auf bzw. in Dämpfelementen oder einer Dämpfmanschette angeordnet.The motor flange is used to improve vibration damping and reduce noise arranged on or in damping elements or a damping sleeve.

Durch, für sich gesehen scheinbar simple Massnahmen wird die Montage und Demontage des Siebes spürbar vereinfacht, ebenso eine evtl. Reinigung. Zugleich wird die Betriebssicherheit durch ein neues Sicherheitskonzept erhöht, ein Zugang zu Rotor und Schlagwerkzeugen ist im Betriebszustand nicht möglich.Through seemingly simple measures, assembly and disassembly is easy of the sieve noticeably simplified, as well as possible cleaning. At the same time Operational safety increased by a new safety concept, access to the rotor and Impact tools are not possible in the operating state.

Die Erfindung wird nachfolgend in einem Ausführungsbeispiel an Hand einer Zeichnung näher beschrieben. In der Zeichnung zeigen die

  • Fig. 1: eine Seitenansicht der Vertikalrotormühle
  • Fig. 2: einen Teilschnitt des Konusses
  • Fig. 3: einen Teilschnitt gemäss Fig. 2 in einer weiteren Variante
  • Fig. 4: ein Detail des Siebmantels
    • The invention is described in more detail in an exemplary embodiment with reference to a drawing. In the drawing they show
  • Fig. 1: a side view of the vertical rotor mill
  • Fig. 2: a partial section of the cone
  • 3: a partial section according to FIG. 2 in a further variant
  • Fig. 4: a detail of the screen jacket

    • Eine Vertikalrotormühle 1 besteht im wesentlichen aus einem tragenden Gestell 2, welches mit einer Grundplatte 3 verbunden ist, auf dessen Oberseite ein Motor 4 aufsitzt, der als Antrieb für einen Rotor 7 dient, der um eine im wesentlichen vertikale Drehachse dreht, sowie einem Konus 6, in dem der Rotor 7 angeordnet ist. Der Motor 4 sitzt in einer Dämpfmanschette 24 oder auf Dämpfelementen 26. Auf der Grundplatte 3 ist weiterhin eine Gutzuführung 5 angeordnet.A vertical rotor mill 1 consists essentially of a supporting frame 2, which is connected to a base plate 3, on the top of which a motor 4 is seated, which serves as a drive for a rotor 7, which is about a substantially vertical axis of rotation rotates, and a cone 6 in which the rotor 7 is arranged. The engine 4 sits in one Damping sleeve 24 or on damping elements 26. On the base plate 3 is still a material feed 5 is arranged.

    Am Rotor 7 sind radial aussen Schlagwerkzeuge 8 angeordnet, die um im wesentlichen zur Drehachse parallele Schwenkachsen schwenkbar befestigt sind. Die Schlagwerkzeuge 8 sind in Richtung der Drehachse vorzugsweise in Gruppen angeordnet, wobei die radial aussenliegenden Enden der Schlagwerkzeuge 8 der einzelnen Gruppen alternierend weit radial aussen liegen und weiterhin die Schlagwerkzeuge 8 in einer Gruppe exzentrisch angeordnet sind. Die Schlagwerkzeuge 8 einer Gruppe sind also bezogen auf die radial aussenliegenden Enden mit verschiedenen Radien versehen.On the rotor 7, striking tools 8 are arranged radially on the outside, which essentially pivot axes parallel to the axis of rotation are pivotally attached. The striking tools 8 are preferably arranged in groups in the direction of the axis of rotation, wherein the radially outer ends of the striking tools 8 of the individual groups alternate are far radially outside and continue to the striking tools 8 in one Group are arranged eccentrically. The striking tools 8 of a group are thus provided with different radii in relation to the radially outer ends.

    Zur Erkennung von Unwuchten ist ein Sensor 29 auf dem Antriebsstrang vorgesehen. Gegenüber dem Stand der Technik wird im Normalfall eine grössere Anzahl an Schlagwerkzeugen 8 eingesetzt (möglich sind 4 bis 12 Stationen).A sensor 29 is provided on the drive train to detect imbalances. Compared to the prior art, a larger number of striking tools is normally used 8 used (4 to 12 stations are possible).

    Im Betriebszustand sind Rotor 7 und Schlagwerkzeuge 8 von einem Sieb 9 seitlich und von unten umgeben. Es handelt sich vorzugsweise um ein zylindrisches Bechersieb, bestehend aus ein- oder mehrteiligen gelochten Siebmantel 10 und einem gelochten Siebboden 11. Die Lochung des Siebbodens 11 ist selbst bei unterschiedlichen Anwendungen vorzugsweise gleich, was eine spürbare Vereinfachung der Ersatzteilhaltung sowie der Vermahlung selbst ergibt. Eine spezielle Lochung ermöglicht mindestens ca. 50% offene Siebfläche. Der Siebmantel 10 besteht als Siebkorb bevorzugt aus nur einem Teil. Eine mehrteilige Ausführung ist ebenfalls möglich, insbesondere zur Reduzierung des Transportvolumens.In the operating state, rotor 7 and striking tools 8 are laterally and from a screen 9 surrounded from below. It is preferably a cylindrical beaker sieve, consisting of one or more parts perforated screen jacket 10 and a perforated Sieve plate 11. The perforation of the sieve plate 11 is even in different applications preferably the same, which is a noticeable simplification of spare parts inventory as well as the grinding itself. A special perforation enables at least approx. 50% open screen area. The screen jacket 10 preferably consists of only one as a screen basket Part. A multi-part version is also possible, especially for reduction of the transport volume.

    Eine Sieberkennung kann vorgesehen werden. Bei einer solchen weist der Siebmantel 10 spezifisch beabstandete Bolzen 31 (in Abhängigkeit von der Lochgrösse) auf. Mittels eines weiteren Sensors, hier ein Wegpotentiometer 32 erfolgt eine Anwesenheits- bzw. Abstandsmessung, anhand derer eine Erkennung und Zuordnung eines Siebes, auch in Bezug auf das Mahlgut, erfolgt.Screen detection can be provided. In such a case, the screen jacket has 10 specifically spaced bolts 31 (depending on the hole size). through another sensor, here a path potentiometer 32, a presence or Distance measurement, on the basis of which a sieve is identified and assigned, also in In relation to the regrind.

    Zur Reinigung bzw. zum Auswechseln des Siebes 9 ist dieses gemeinsam mit dem Konus 6 soweit absenkbar, bis Rotor 7 und Sieb 9 vollkommen frei liegen.To clean or replace the screen 9, this is together with the cone 6 can be lowered until the rotor 7 and sieve 9 are completely exposed.

    In den hohlen Säulen 12 des Gestells 2 sind Geradführungen 13 vorgesehen, die mit mindestens einer Hubvorrichtung, vorzugsweise ein Pneumatikzylinder 14 verbunden sind. Die Verbindung zwischen Konus 6 und Geradführung 13 ist über Verbindungsteile 16 und die Verbindung zwischen Konus 6 und Sieb 9 über Verbindungsteile 15 hergestellt. Der vertikale Verfahrweg vom Konus 6 ist nach oben durch den Siebmantel 10 und nach unten durch den Zylinder 14 begrenzt.In the hollow columns 12 of the frame 2 straight guides 13 are provided, which with at least one lifting device, preferably a pneumatic cylinder 14 connected are. The connection between cone 6 and straight guide 13 is via connecting parts 16 and the connection between cone 6 and sieve 9 is made via connecting parts 15. The vertical travel from cone 6 is up through sieve jacket 10 and bounded at the bottom by the cylinder 14.

    Einerseits sind dadurch das Sieb 9 und die Schlagwerkzeuge 8 sowie der Innenraum des Konus 6 ungehindert zugängig und andererseits ist ein Zugriff zu Sieb 9 und Rotor 7 im Betrieb ausgeschlossen.On the one hand, the screen 9 and the striking tools 8 and the interior are thereby the cone 6 is freely accessible and on the other hand there is access to the sieve 9 and rotor 7 excluded in operation.

    Durch das Sieb 9 wird der Innenraum des Konus 6 in zwei Teilräume unterteilt, einen Mahlraum 19, in welchem sich der Rotor 7 befindet und einen Sammelraum 20, in dem sich das gemahlene Gut sammelt. Am unteren Ende des Sammelraumes 20 befindet sich mindestens eine Auslassöffnung 21, aus der das gemahlene Gut austreten kann.The interior of the cone 6 is divided into two sub-spaces by the sieve 9, one Grinding chamber 19, in which the rotor 7 is located, and a collecting chamber 20, in which the ground good collects. Located at the lower end of the collecting room 20 there is at least one outlet opening 21 from which the ground material can exit.

    Der Konus 6 und die Grundplatte 3, sowie der Mahlraum 19 sind in diesem Ausführungsbeispiel druckstossfest ausgeführt.The cone 6 and the base plate 3, as well as the grinding chamber 19 are in this embodiment Shockproof design.

    Die Zuführung des zu mahlenden Gutes erfolgt über eine Speisevorrichtung, Gutzuführung 5. Das Gut gelangt über Stutzen 22 und mindestens eine Eintrittsöffnung 23 in den Mahlraum 19. Der Gutzuführung 5 vorgeschaltet (nicht dargestellt) sind übliche Schwerteil-Trennvorrichtungen oder auch Magnet-Trenneinrichtungen, wie sie der EP-B-556645 oder der CH-A-686875 entnehmbar sind.The material to be ground is fed in via a feed device, material feed 5. The material reaches the nozzle 22 and at least one inlet opening 23 in the Grinding room 19. Upstream of the material feed 5 (not shown) are common Heavy part separators or magnetic separators, such as those of EP-B-556645 or can be found in CH-A-686875.

    Mittels der Speisevorrichtung wird ein dosierbarer und kontinuierlicher Gutzufluss zu den Eintrittsöffnungen 23 gewährleistet.A meterable and continuous flow of material is added by means of the feed device the inlet openings 23 guaranteed.

    Vorgesehen ist eine Druckausgleichsöffnung 25, um einen Über- oder Unterdruck in der Mahlkammer (Sammelraum 19) zu vermeiden. Eine Regelung der Druckverhältnisse erfolgt mittels Drucksensor 33. Mittels der Sensoren 29, 33 kann eine Überwachung des Betriebszustandes der Mühle 1, z.B. bzgl. Vibrationen, Lagerschäden, Schlägerbruch oder Fremdteile erfolgen.A pressure equalization opening 25 is provided in order to prevent overpressure or underpressure in the Avoid grinding chamber (collecting room 19). A regulation of the pressure conditions is carried out by means of pressure sensor 33. The sensors 29, 33 can be used to monitor the Operating state of the mill 1, e.g. regarding vibrations, bearing damage, racket breakage or foreign parts.

    Die Stutzen 22 weisen einen runden Querschnitt auf und sind bei Verschleiss leicht austauschbar. The nozzles 22 have a round cross section and are light when worn interchangeable.

    Über eine Speisevorrichtung können sowohl nur eine als auch zwei Vertikalrotormühlen 1 parallel beschickt werden, wie dies in der EP-B-556645 bereits genannt ist.Only one and two vertical rotor mills can be fed via a feed device 1 can be loaded in parallel, as already mentioned in EP-B-556645.

    Zur Schwingungs- und Geräuschdämpfung ist der Flansch 27 des Motors 4 auf Dämpfelementen 26 oder in einer flanschförmigen Dämpfmanschette 24 elastisch gelagert.For vibration and noise damping, the flange 27 of the motor 4 is on damping elements 26 or elastically supported in a flange-shaped damping sleeve 24.

    Das Gestell 2 ist bevorzugt mittels Bodenplatte 17 auf einen Zwischenboden 28 eines Mühlengebäudes angeordnet. Die Bodenplatte 17 weist eine Öffnung auf, die konzentrisch zur Auslassöffnung 21 gelegen ist. Die Öffnung der Bodenplatte 17 weist eine aufblasbare Teleskopdichtung 18 auf, die die Auslassöffnung 21 umgibt und die im aufgeblasenen Zustand die Öffnung abdichtet. Vor einer Vertikalbewegung des Konusses 6 wird die Teleskopdichtung 18 entlüftet. The frame 2 is preferably by means of a base plate 17 on an intermediate floor 28 Mill building arranged. The bottom plate 17 has an opening that is concentric is located to the outlet opening 21. The opening of the base plate 17 has one inflatable telescopic seal 18 which surrounds the outlet opening 21 and which in the inflated Condition the opening seals. Before a vertical movement of the cone 6, the telescopic seal 18 is vented.

    Bezugszeichenreference numeral

    11
    VertikalrotormühleVertical rotor mill
    22
    Gestellframe
    33
    Grundplattebaseplate
    44
    Motorengine
    55
    Gutzuführungproduct feed
    66
    Konuscone
    77
    Rotorrotor
    88th
    Schlagwerkzeugimpact tool
    99
    Siebscree
    1010
    Siebmantelscreening jacket
    1111
    Siebbodensieve tray
    1212
    Säulepillar
    1313
    Geradführungstraight guide
    1414
    Pneumatikzylinderpneumatic cylinder
    1515
    Verbindungsteilconnecting part
    1616
    Verbindungsteilconnecting part
    1717
    Bodenplattebaseplate
    1818
    Teleskopdichtungtelescopic seal
    1919
    Sammelraumplenum
    2020
    Sammelraumplenum
    2121
    Auslassöffnungoutlet
    2222
    StutzenSupport
    2323
    Eintrittsöffnunginlet opening
    2424
    DämpfmanschetteDämpfmanschette
    2525
    DruckausgleichsöffnungPressure equalization port
    2626
    Dämpfelementdamping
    2727
    Flanschflange
    2828
    Zwischenbodenfalse floor
    2929
    Sensor sensor
    3131
    Bolzenbolt
    3232
    Wegpotentiometerdisplacement potentiometer
    3333
    Drucksensorpressure sensor

    Claims (12)

    1. A vertical rotor mill for milling grainy materials with a casing bordering a milling area (19) in the form of a cone (6), which accommodates a perpendicular rotor (7) equipped with striking tools (8) arranged in groups and a motor (4), wherein the top of the casing has at least one inlet hole (23) for the material above the striking tools (8), a beaker-shaped sieve (9) that envelops the striking tools (8) and is arranged so that it can slide A vertically, and with an outlet hole (21) provided on the bottom of the cone (6), characterized in that the sieve (9) is connected with the cone (6) and can be moved A vertically between stops (10, 14) with the latter.
    2. A vertical rotor mill according to claim 1, characterized in that the radially outlying ends of the striking tools (8) of the individual groups lie radially to the outside at alternating distances, and the striking tools (8) are additionally eccentrically arranged in a group.
    3. A vertical rotor mill according to claim 1, characterized in that a flange (27) of the motor (4) is flexibly mounted on damper elements (26) or in a damper packing (24).
    4. A vertical rotor mill according to claim 1, characterized in that a sieve jacket (10) of the sieve (9) exhibits varying perforations, and the open sieve surface measures at least approx. 50 %.
    5. A vertical rotor mill according to claim 1, characterized in that a sieve floor (11) with only one hole size is provided.
    6. A vertical rotor mill according to claim 1, characterized in that it can be operated as a single or dual machine, wherein the material is supplied via a shared material feeder (5) during dual operation.
    7. A vertical rotor mill according to claim 1, characterized in that a floor plate (17) is provided as part or independently of a framework (2) of the A vertical rotor mill (1), which exhibits a hole with an inflatable telescopic gasket (18), which envelops the outlet hole (21) and seals it when inflated.
    8. A vertical rotor mill according to claim 1, characterized in that a sensor (29) is arranged on the drive train.
    9. A vertical rotor mill according to at least one of the preceding claims, characterized in that the sieve jacket (10) exhibits at least one element for recognition, in particular a bolt (31), which is securely arranged at a specific distance from the base plate (3) as a function of the hole size of the sieve (9).
    10. A vertical rotor mill according to at least one of the preceding claims, characterized in that the sieves (9) are provided with a perforation that overlaps in the running direction.
    11. A vertical rotor mill according to at least one of the preceding claims, characterized in that a sensor (29) is allocated to the motor (4) and another sensor (33) to the cone (6) for monitoring the operating status of the A vertical rotor mill.
    12. A vertical rotor mill according to claim 1, characterized in that the path traversed by the sieve (9) is downwardly limited by a stop.
    EP98942449A 1998-09-24 1998-09-24 Vertical rotor mill Expired - Lifetime EP1115492B1 (en)

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    PCT/CH1998/000408 WO2000018509A1 (en) 1998-09-24 1998-09-24 Vertical rotor mill

    Publications (2)

    Publication Number Publication Date
    EP1115492A1 EP1115492A1 (en) 2001-07-18
    EP1115492B1 true EP1115492B1 (en) 2002-11-06

    Family

    ID=4551354

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP98942449A Expired - Lifetime EP1115492B1 (en) 1998-09-24 1998-09-24 Vertical rotor mill

    Country Status (16)

    Country Link
    US (1) US6585178B1 (en)
    EP (1) EP1115492B1 (en)
    KR (1) KR100541304B1 (en)
    CN (1) CN1098732C (en)
    AT (1) ATE227165T1 (en)
    AU (1) AU9060298A (en)
    BR (1) BR9816025A (en)
    CZ (1) CZ295602B6 (en)
    DE (1) DE59806224D1 (en)
    DK (1) DK1115492T3 (en)
    EA (1) EA002949B1 (en)
    ES (1) ES2183409T3 (en)
    HU (1) HU222862B1 (en)
    TR (1) TR200100807T2 (en)
    UA (1) UA63017C2 (en)
    WO (1) WO2000018509A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102007042839A1 (en) 2007-09-10 2009-03-12 Bühler AG Striking tool e.g. flat beater, for impact mill for grinding of e.g. grain, has working area provided opposite to accommodating area, where hardness characteristic of working area is variable and rotor and tool are surrounded by filter

    Families Citing this family (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102005029899A1 (en) * 2005-06-25 2007-01-04 Gotic Gmbh Knife cutting mill
    RU2528456C1 (en) * 2013-04-18 2014-09-20 Закрытое акционерное общество "Машиностроительная компания "Технэкс" Hammer crusher
    US11278907B2 (en) * 2015-02-18 2022-03-22 Pms Handelskontor Gmbh Comminution device
    RU2601577C1 (en) * 2015-06-23 2016-11-10 Александр Викторович Рейхардт Bead mill
    CA3094247A1 (en) * 2018-03-22 2019-09-26 Seed Terminator Holdings PTY LTD An impact mill and a residue processing system incorporating same
    RU2742509C1 (en) * 2019-12-03 2021-02-08 Роман Викторович Бесполденов Hammer grain grinder with vertical rotor
    KR102328246B1 (en) 2021-07-14 2021-11-18 주식회사 피티케이 Conical mill for laboratory

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    US3169711A (en) 1963-04-16 1965-02-16 Robert D Helms Rotary grinding mill
    FR2387082A1 (en) 1977-04-14 1978-11-10 Colmant Cuvelier CRUSHING DEVICE
    DK152338B (en) 1985-11-11 1988-02-22 Maskinfabrikken Skiold Saeby A hammer mill
    DE8810234U1 (en) 1988-08-12 1988-09-22 Torfwerk Gebr. Brill Gmbh & Co. Kg, 4458 Georgsdorf, De
    CH684059A5 (en) 1991-07-22 1994-07-15 Buehler Ag Hammer mill.
    DK0556645T3 (en) 1992-02-21 1996-01-29 Buehler Ag hammer mill
    US5232168A (en) 1992-03-30 1993-08-03 Engineered Systems, Inc. Apparatus and method for separating recyclable material from waste material
    CH686875A5 (en) 1993-11-29 1996-07-31 Buehler Ag Geb Impact mill

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102007042839A1 (en) 2007-09-10 2009-03-12 Bühler AG Striking tool e.g. flat beater, for impact mill for grinding of e.g. grain, has working area provided opposite to accommodating area, where hardness characteristic of working area is variable and rotor and tool are surrounded by filter

    Also Published As

    Publication number Publication date
    CZ2001158A3 (en) 2001-05-16
    AU9060298A (en) 2000-04-17
    DE59806224D1 (en) 2002-12-12
    ES2183409T3 (en) 2003-03-16
    KR100541304B1 (en) 2006-01-16
    DK1115492T3 (en) 2003-03-03
    CZ295602B6 (en) 2005-08-17
    UA63017C2 (en) 2004-01-15
    ATE227165T1 (en) 2002-11-15
    KR20010106485A (en) 2001-11-29
    TR200100807T2 (en) 2002-07-22
    HU222862B1 (en) 2003-12-29
    HUP0103278A3 (en) 2002-04-29
    EP1115492A1 (en) 2001-07-18
    US6585178B1 (en) 2003-07-01
    WO2000018509A1 (en) 2000-04-06
    CN1098732C (en) 2003-01-15
    CN1309588A (en) 2001-08-22
    HUP0103278A2 (en) 2002-01-28
    BR9816025A (en) 2001-10-23
    EA200100386A1 (en) 2001-08-27
    EA002949B1 (en) 2002-12-26

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