EP0441995A1 - Vibration crusher and mill - Google Patents

Vibration crusher and mill Download PDF

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Publication number
EP0441995A1
EP0441995A1 EP90102728A EP90102728A EP0441995A1 EP 0441995 A1 EP0441995 A1 EP 0441995A1 EP 90102728 A EP90102728 A EP 90102728A EP 90102728 A EP90102728 A EP 90102728A EP 0441995 A1 EP0441995 A1 EP 0441995A1
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EP
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Prior art keywords
housing
grinding
vibration
working
chambers
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EP90102728A
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German (de)
French (fr)
Inventor
Toms Hrant Dipl.-Ing. Dersarkisyan
Dimiter Nedelchev Nikolov
Bogdan Tzvetkov Ivanov
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TECHNOIMPORTEXPORT
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TECHNOIMPORTEXPORT
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Priority to EP90102728A priority Critical patent/EP0441995A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting

Definitions

  • the invention relates to a vibration crushing and grinding device for crushing and grinding solid products and raw materials of natural and artificial origin for use in construction, in metallurgy, in the chemical industry and other branches of industry.
  • a vertical type vibration mill known from SU-PS 1 366 212 contains a vertical cylindrical housing which is divided into work chambers by grids; the working chambers are filled with grinding media. There is a pouring unit in the upper area of the housing and an outlet opening in the lower area.
  • the grid between the working chambers consists of two immovable, perforated panes arranged one below the other, between which movable slides are arranged. When the slide is moved, the clear cross-section of the grate is regulated, which allows the broken material to pass to the chamber underneath. Vibrators are attached to the housing; the housing is mounted on a foundation by means of elastic elements.
  • the known vibratory mill Since the broken material is discharged directly through the grid in the known vibratory mill, the particle size of the finished product cannot be regulated to a sufficient degree as the entire active grid surface is not covered by the movable sliders. Therefore, the known vibratory mill cannot be used for fine grinding of materials (below the millimeter range).
  • the grinding media can consist of smooth balls or rods.
  • Ball milled material has an unfavorable effect on the grid holes because they roll them out (increase in size) and accelerate their wear considerably.
  • smooth rods as grinding media, the material is kept at a high level, i.e. it is not possible to ensure that the material is exposed to the milling process for the required amount of time.
  • Another disadvantage is that with vertical vibration mills the distribution of the vibration energy in the cylindrical housing is uneven, namely from the circumference to the center of the housing, which reduces the effectiveness of the action of the grinding media on the material.
  • the invention has for its object to provide a vibration crushing and grinding device which ensures a gradual breaking and grinding of the materials, in which the vibration energy is transferred with high efficiency from the vibration source to the grinding media and in which the particle size of the Products in the individual grinding stages and the particle size of the end product can be adjusted.
  • a vibration crushing and grinding device on the vertically arranged cylindrical housing of which a vibration source is rigidly attached.
  • the housing is elastic on an immovable
  • the frame is suspended and divided into working chambers arranged one below the other and filled with grinding media by means of a grid.
  • a vibration transmitter is immovably mounted, which is a hollow cylinder with one or more free grinding elements arranged therein.
  • the grilles between the working chambers consist of a perforated disc rigidly attached to the housing, above which a movable perforated disc is freely arranged, the outside diameter of which is smaller than that of the housing.
  • an unloading section is arranged which surrounds a part of the lower chamber.
  • the grinding media are preferably designed as rods 15 with pointed upper ends and rounded lower ends, recesses being formed in the outer working surface of the grinding media. Such grinding media can also be used in known mills.
  • the unloading section is designed in the form of a cylinder to which a cone is attached.
  • the cylindrical part surrounds a part of the housing, while discharge slides are arranged in the bottom of the conical or frustoconical part and laterally to the cylindrical part.
  • the vibration crushing and grinding device enables a gradual course of the grinding process, the intensification of the grinding in each step, a regulation of the particle size and an effective construction of the grids between the chambers.
  • the movable perforated disc over the immovable disc enables that Protection of the latter from wear, ie from an expansion of the holes.
  • the vibration breaking and grinding device consists of a vertical cylindrical housing, on the outer surface of which vibrators 2 are rigidly attached.
  • the housing 1 is elastically attached to a frame 4 by means of springs 3.
  • a loading unit 5 is mounted, in which the distributor disks 6 are fastened.
  • an upper and a lower working chamber 7 and 8 are housed.
  • An unloading section 9 is located below the bottom of the lower chamber 8.
  • Centrally cylindrical vibration transmitters 10 are arranged in the cylindrical working chambers 7 and 8.
  • a fastening element 11 is mounted in the upper chamber 7, by means of which the vibration transmitter 10 is rigidly fastened in the working chamber 7.
  • the bottoms of the working chambers 7, 8 are designed as grids, each consisting of a perforated disk 12 rigidly attached to the housing 1 and a free perforated disk 13 arranged above it.
  • the outside diameter of the movable perforated disk 13 is smaller than the inside diameter of the cylindrical working chambers 7, 8.
  • the inside diameter of the perforated disk 13 is larger than the outside diameter of the vibration transmitter 10.
  • the diameter of the holes 14 of the immovable perforated disk 12 is larger than the diameter of the holes of the movable disk 13, while the diameter of the grating delimiting the working chamber 8 is smaller than that of the holes of the grating delimiting the working chamber 7.
  • the holes of the movable disks 13 are arranged in relation to those of the immovable disks 12 in such a way that, in the case of the most unfavorable overlap, a clear cross section is created which ensures movement of the material.
  • the working chambers 7 and 8 and the vibration transmitters 10 are filled with grinding bodies 15 which are designed as freely arranged rods with pointed upper ends, preferably recesses formed as ring grooves, along the vertical working area and rounded lower ends. The diameter of the grinding media decreases from the upper to the lower chambers, while their number increases in the same direction (degree of filling of the chamber).
  • the discharge sector 9 is designed in the form of a cylindrical section, to which a frustoconical section is attached.
  • the cylindrical section is rigidly attached to the housing and surrounds part of the lower chamber 8.
  • Slides 16 are mounted on the frustoconical section and laterally on the cylindrical section of the unloading section 9.
  • the vibration crushing and grinding device according to the invention works as follows.
  • the regrind is poured into the feed section 5. It is distributed evenly over the entire cross-section by the distributor disks 6 and reaches the upper chamber 7. Under the action of the vibrators 2, the entire housing 1 begins to vibrate.
  • the grinding media, ie the rods 15 absorb the vibration energy from the wall of the working chamber 7 and the vibration transmitters 10 and act on the material, the structure of which is thereby destroyed.
  • the larger particles are taken up by the tip of the rods 15 while the comminuted particles move downwards, with the grinding media acting on them.
  • the complicated shape of the rods 15 increases the contact area in the axial direction and the abrasive effect achieved together with the movable grid 13.
  • the particles are further crushed as they pass through the holes 14 and on the contact surface between the immovable and the movable grids 12 and 13, respectively.
  • some of the holes are not aligned with one another, but their entire, in each case aligned, clear cross-section ensures the movement of the material to the lower working chamber 8. Since the number of rods 15 is increased at the expense of their cross-section, this increases in each subsequent stage, the contact vibration area and the effectiveness of the process in terms of obtaining fine fractions is increased. If coarser grinding is to take place (in the millimeter range), the ground material is unloaded through the lower unloading slide 16 of the unloading section 9. If fine grinding is to be carried out, the lateral slide 16 unloads, ie the material is held back in the lower working chamber 8 for a longer time and the grinding process is extended.

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

Abstract

The vibration crusher and mill according to the invention for crushing and milling solid material of natural and artificial origin ensures a stepped progression of the milling process with reduced friction of the milling bodies on the floors of the chambers. The invention consists of a vertically arranged cylindrical housing 1 with vibrators 2 which are attached thereto, the housing 1 being mounted on a frame 4 by means of elastic elements 3. The housing is divided up into working chambers 7 and 8 by grilles. The grilles consist of a non-movable perforated plate 12 which is attached to the housing 1 and of a movable perforated plate 13 which is arranged freely above the latter. In the lower area of the housing 1 there is a discharge section 9 whose cylindrical part surrounds a part of the lower working chamber 8 of the housing 1.

Description

Die Erfindung bezieht sich auf eine Vibrations-Brech- und -Mahleinrichtung zum Brechen und Mahlen fester Produkte und Rohstoffe natürlicher und künstlicher Herkunft zur Verwendung im Bauwesen, in der Metallurgie, in der chemischen Industrie und anderen Industriezweigen.The invention relates to a vibration crushing and grinding device for crushing and grinding solid products and raw materials of natural and artificial origin for use in construction, in metallurgy, in the chemical industry and other branches of industry.

Eine aus der SU-PS 1 366 212 bekannte Vibrationsmühle vertikaler Bauart enthält ein durch Gitter in Arbeitskammern aufgeteiltes, vertikales zylindrisches Gehäuse; die Arbeitskammern sind mit Mahlkörpern gefüllt. Im oberen Bereich des Gehäuses befindet sich eine Einschütteinheit und im unteren Bereich eine Auslaßöffnung. Das Gitter zwischen den Arbeitskammern besteht aus zwei untereinander angeordneten, unbeweglichen, gelochten Scheiben, zwischen denen bewegliche Schieber angeordnet sind. Beim verschieben der Schieber wird der lichte Querschnitt des Rostes reguliert, der das gebrochene Gut zur darunter angeordneten Kammer durchläßt. Am Gehäuse sind Vibratoren befestigt; das Gehäuse ist mittels elastischer Elemente an einem Fundament montiert.A vertical type vibration mill known from SU-PS 1 366 212 contains a vertical cylindrical housing which is divided into work chambers by grids; the working chambers are filled with grinding media. There is a pouring unit in the upper area of the housing and an outlet opening in the lower area. The grid between the working chambers consists of two immovable, perforated panes arranged one below the other, between which movable slides are arranged. When the slide is moved, the clear cross-section of the grate is regulated, which allows the broken material to pass to the chamber underneath. Vibrators are attached to the housing; the housing is mounted on a foundation by means of elastic elements.

Da bei der bekannten vibrationsmühle das gebrochene Gut direkt durch das Gitter entladen wird, kann die Partikelgröße des fertigen Produkts nicht in genügendem Maße reguliert werden, da nicht die gesamte aktive Gitteroberfläche von den beweglichen Schiebern überdeckt wird. Deshalb läßt sich die bekannte vibrationsmühle nicht zum Feinmahlen von Materialien (unterhalb des Millimeterbereichs) verwenden.Since the broken material is discharged directly through the grid in the known vibratory mill, the particle size of the finished product cannot be regulated to a sufficient degree as the entire active grid surface is not covered by the movable sliders. Therefore, the known vibratory mill cannot be used for fine grinding of materials (below the millimeter range).

Es ist bekannt, daß die Mahlkörper aus glatten Kugeln oder Stäben bestehen können. Kugelmahlgut übt aber eine ungünstige Wirkung auf die Gitterlöcher aus, weil sie diese auswalzen (Vergrößerung der Abmessungen) und ihren Verschleiß wesentlich beschleunigen. Bei Verwendung glatter Stäbe als Mahlkörper wird das Material in der Höhe gehalten, d.h. es ist nicht möglich, zu gewährleisten, daß das Material für die erforderliche Zeitdauer dem Mahlvorgang ausgesetzt wird. Ein weiterer Nachteil besteht darin, daß bei vertikalen Vibrationsmühlen die Verteilung der Vibationsenergie im zylindrischen Gehäuse ungleichmäßig ist, nämlich vom Umfang zur Mitte des Gehäuses geringer wird, wodurch die Wirksamkeit der Einwirkung der Mahlkörper auf das Material abnimmt.It is known that the grinding media can consist of smooth balls or rods. Ball milled material has an unfavorable effect on the grid holes because they roll them out (increase in size) and accelerate their wear considerably. When using smooth rods as grinding media, the material is kept at a high level, i.e. it is not possible to ensure that the material is exposed to the milling process for the required amount of time. Another disadvantage is that with vertical vibration mills the distribution of the vibration energy in the cylindrical housing is uneven, namely from the circumference to the center of the housing, which reduces the effectiveness of the action of the grinding media on the material.

Der Erfindung liegt die Aufgabe zugrunde, eine Vibrations-Brech-und -Mahleinrichtung zu schaffen, die ein stufenweises Brechen und Mahlen der Materialien gewährleistet, bei der die Vibrationsenergie mit hohem Wirkungsgrad von der Vibrationsquelle auf die Mahlkörper übertragen wird und bei der sich die Partikelgröße der Produkte in den einzelnen Mahlstufen und die Partikelgröße des Endprodukts einstellen läßt.The invention has for its object to provide a vibration crushing and grinding device which ensures a gradual breaking and grinding of the materials, in which the vibration energy is transferred with high efficiency from the vibration source to the grinding media and in which the particle size of the Products in the individual grinding stages and the particle size of the end product can be adjusted.

Diese Aufgabe wird erfindungsgemäß durch eine Vibrations-Brech-und -Mahlvorrichtung gelöst, an deren vertikal angeordnetem zylindrischem Gehäuse eine Vibrationsquelle starr befestigt ist. Das Gehäuse ist elastisch an einem unbeweglichen Gestell aufgehängt und mittels Gitter in untereinander angeordnete und mit Mahlkörpern gefüllte Arbeitskammern aufgeteilt. In der Mitte jeder Arbeitskammer ist erfindungsgemäß ein Vibrationsübertrager unbeweglich montiert, der einen hohlen Zylinder mit einem oder mehreren darin angeordneten freien Mahlkörpern darstellt. Die Gitter zwischen den Arbeitskammern bestehen aus einer starr am Gehäuse befestigten, gelochten Scheibe, über der eine bewegliche gelochte Scheibe frei angeordnet ist, deren Außendurchmesser kleiner ist als der des Gehäuses. Im unteren Bereich des Gehäuses ist ein Entladeabschnitt angeordnet, der einen Teil der unteren Kammer umgibt.This object is achieved according to the invention by a vibration crushing and grinding device, on the vertically arranged cylindrical housing of which a vibration source is rigidly attached. The housing is elastic on an immovable The frame is suspended and divided into working chambers arranged one below the other and filled with grinding media by means of a grid. In the middle of each working chamber, according to the invention, a vibration transmitter is immovably mounted, which is a hollow cylinder with one or more free grinding elements arranged therein. The grilles between the working chambers consist of a perforated disc rigidly attached to the housing, above which a movable perforated disc is freely arranged, the outside diameter of which is smaller than that of the housing. In the lower region of the housing, an unloading section is arranged which surrounds a part of the lower chamber.

Die Mahlkörper sind vorzugsweise als Stäbe 15 mit spitzen oberen Enden und abgerundeten unteren Enden ausgebildet, wobei in der äußeren Arbeitsfläche der Mahlkörper Vertiefungen ausgebildet sind. Solche Mahlkörper können auch bei bekannten Mühlen eingesetzt werden.The grinding media are preferably designed as rods 15 with pointed upper ends and rounded lower ends, recesses being formed in the outer working surface of the grinding media. Such grinding media can also be used in known mills.

Gemäß einer bevorzugten Weiterbildung der erfindungsgemäßen Vibrations-Brech- und -Mahlvorrichtung ist der Entladeabschnitt in Form eines Zylinders ausgebildet, an den ein Kegel angesetzt ist. Der zylindrische Teil umgibt einen Teil des Gehäuses, während im Boden des kegelförmigen bzw. kegelstumpfförmigen Teils und seitlich zum zylindrischen Teil Entladeschieber angeordnet sind.According to a preferred development of the vibration crushing and grinding device according to the invention, the unloading section is designed in the form of a cylinder to which a cone is attached. The cylindrical part surrounds a part of the housing, while discharge slides are arranged in the bottom of the conical or frustoconical part and laterally to the cylindrical part.

Die erfindungsgemäße Vibrations-Brech- und -Mahlvorrichtung ermöglicht einen stufenweisen Verlauf des Mahlprozesses, die Intensivierung des Mahlens in jeder Stufe, eine Regulierung der Partikelgröße und eine effektive Konstruktion der Gitter zwischen den Kammern. Die bewegliche gelochte Scheibe über der unbeweglichen Scheibe ermöglicht den Schutz der letzteren vor Verschleiß, d.h. vor einer Erweiterung der Löcher.The vibration crushing and grinding device according to the invention enables a gradual course of the grinding process, the intensification of the grinding in each step, a regulation of the particle size and an effective construction of the grids between the chambers. The movable perforated disc over the immovable disc enables that Protection of the latter from wear, ie from an expansion of the holes.

Im folgenden werden je ein Ausführungsbeispiel der erfindungsgemäßen Vibrations-Brech- und -Mahleinrichtung und eines erfindungsgemäßen Mahlkörpers erläutert. Es zeigen:

Fig. 1
einen Querschnitt einer erfindungsgemäßen Vibrations-Brech-und -Mahleinrichtung und
Fig. 2
die Gesamtansicht eines Mahlkörpers.
An exemplary embodiment of the vibration crushing and grinding device according to the invention and of a grinding body according to the invention are explained below. Show it:
Fig. 1
a cross section of a vibration crushing and grinding device according to the invention and
Fig. 2
the overall view of a grinding media.

Die erfindungsgemäße Vibrations-Brech- und -Mahlvorrichtung besteht aus einem vertikalen zylindrischen Gehäuse, an dessen Außenfläche Vibratoren 2 starr befestigt sind. Das Gehäuse 1 ist mittels Federn 3 elastisch an einem Gestell 4 befestigt. Im oberen Bereich des Gehäuses 1 ist eine Beschickungseinheit 5 montiert, in der Verteilerscheiben 6 befestigt sind. Im Gehäuse 1 sind eine obere und eine untere Arbeitskammer 7 bzw. 8 untergebracht. Unterhalb des Bodens der unteren Kammer 8 befindet sich ein Entladeabschnitt 9. In den zylindrischen Arbeitskammern 7 und 8 sind zentral zylindrische Vibrationsübertrager 10 angeordnet. In der oberen Kammer 7 ist ein Befestigungselement 11 montiert, mittels dessen der Vibrationsübertrager 10 starr in der Arbeitskammer 7 befestigt ist. Die Böden der Arbeitskammern 7, 8 sind als Gitter ausgebildet, die je aus einer starr am Gehäuse 1 befestigten Lochscheibe 12 und einer über dieser angeordneten, freien Lochscheibe 13 bestehen. Der Außendurchmesser der beweglichen Lochscheibe 13 ist kleiner als der Innendurchmesser der zylindrischen Arbeitskammern 7, 8. Der Innendurchmesser der Lochscheiben 13 ist größer als der Außendurchmesser des Vibrationsübertragers 10. Der Durchmesser der Löcher 14 der unbeweglichen Lochscheibe 12 ist größer als der Durchmesser der Löcher der beweglichen Scheibe 13, während der Durchmesser des die Arbeitskammer 8 begrenzenden Gitters kleiner ist als der der Löcher des die Arbeitskammer 7 begrenzenden Gitters. Die Löcher der beweglichen Scheiben 13 sind in Bezug auf die der unbeweglichen Scheiben 12 so angeordnet, daß bei der ungünstigsten Überlappung ein lichter Querschnitt entsteht, der eine Bewegung des Materials gewährleistet. Die Arbeitskammern 7 und 8 und die Vibrationsübertrager 10 sind mit Mahlkörpern 15 gefüllt, die als frei angeordnete Stäbe mit spitzen oberen Enden, vorzugsweise als Ringnuten ausgebildeten Vertiefungen längs des senkrechten Arbeitsbereichs und abgerundeten unteren Enden ausgebildet sind. Der Durchmesser der Mahlkörper nimmt von der oberen zu den unteren Kammern ab, während ihre Anzahl in der gleichen Richtung (Füllgrad der Kammer) zunimmt.The vibration breaking and grinding device according to the invention consists of a vertical cylindrical housing, on the outer surface of which vibrators 2 are rigidly attached. The housing 1 is elastically attached to a frame 4 by means of springs 3. In the upper area of the housing 1, a loading unit 5 is mounted, in which the distributor disks 6 are fastened. In the housing 1, an upper and a lower working chamber 7 and 8 are housed. An unloading section 9 is located below the bottom of the lower chamber 8. Centrally cylindrical vibration transmitters 10 are arranged in the cylindrical working chambers 7 and 8. A fastening element 11 is mounted in the upper chamber 7, by means of which the vibration transmitter 10 is rigidly fastened in the working chamber 7. The bottoms of the working chambers 7, 8 are designed as grids, each consisting of a perforated disk 12 rigidly attached to the housing 1 and a free perforated disk 13 arranged above it. The outside diameter of the movable perforated disk 13 is smaller than the inside diameter of the cylindrical working chambers 7, 8. The inside diameter of the perforated disk 13 is larger than the outside diameter of the vibration transmitter 10. The diameter of the holes 14 of the immovable perforated disk 12 is larger than the diameter of the holes of the movable disk 13, while the diameter of the grating delimiting the working chamber 8 is smaller than that of the holes of the grating delimiting the working chamber 7. The holes of the movable disks 13 are arranged in relation to those of the immovable disks 12 in such a way that, in the case of the most unfavorable overlap, a clear cross section is created which ensures movement of the material. The working chambers 7 and 8 and the vibration transmitters 10 are filled with grinding bodies 15 which are designed as freely arranged rods with pointed upper ends, preferably recesses formed as ring grooves, along the vertical working area and rounded lower ends. The diameter of the grinding media decreases from the upper to the lower chambers, while their number increases in the same direction (degree of filling of the chamber).

Der Entladesektor 9 ist in Form eines zylindrischen Abschnittes ausgebildet, an den ein kegelstumpfförmiger Abschnitt angesetzt ist. Der zylindrische Abschnitt ist starr am Gehäuse befestigt und umgibt einen Teil der unteren Kammer 8. An dem kegelstumpfförmigen Abschnitt und seitlich am zylindrischen Abschnitt des Entladeabschnittes 9 sind Schieber 16 montiert.The discharge sector 9 is designed in the form of a cylindrical section, to which a frustoconical section is attached. The cylindrical section is rigidly attached to the housing and surrounds part of the lower chamber 8. Slides 16 are mounted on the frustoconical section and laterally on the cylindrical section of the unloading section 9.

Die erfindungsgemäße Vibrations-Brech- und -Mahlvorrichtung arbeitet wie folgt.The vibration crushing and grinding device according to the invention works as follows.

Das Mahlgut wird in den Beschickungsabschnitt 5 geschüttet. Von den verteilerscheiben 6 wird es gleichmäßig über den ganzen Querschnitt verteilt und gelangt in die obere Kammer 7. Unter Einwirkung der Vibratoren 2 beginnt das ganze Gehäuse 1 zu vibrieren. Die Mahlkörper, d. h. die Stäbe 15 nehmen die Vibrationsenergie von der Wand der Arbeitskammer 7 und den Vibrationsübertragern 10 auf und wirken auf das Material ein, dessen Struktur hierdurch zerstört wird. Die größeren Partikel werden von der Spitze der Stäbe 15 aufgenommen, während sich die zerkleinerten Partikel abwärts bewegen, wobei die Mahlkörper auf sie einwirken. Die komplizierte Gestalt der Stäbe 15 vergrößert die Kontaktfläche in Axialrichtung sowie den zusammen mit dem beweglichen Gitter 13 erzielten zerreibenden Effekt. Die Partikel werden ferner beim Durchtritt durch die Löcher 14 und an der Kontaktfläche zwischen dem unbeweglichen und dem beweglichen Gitter 12 bzw. 13 zerkleinert. Bei der gegenseitigen relativen Vibrationsbewegung fluchtet ein Teil der Löcher nicht miteinander, ihr gesamter, jeweils miteinander fluchtender, lichter Querschnitt gewährleistet aber die Bewegung des Materials zur unteren Arbeitskammer 8. Da in dieser die Anzahl der Stäbe 15 auf Kosten ihres Querschnittes erhöht ist, vergrößert sich in jeder nachfolgenden Stufe die Kontakt-Vibrationsfläche und die Effektivität des Prozesses im Hinblick auf die Erzielung feiner Fraktionen wird erhöht. Falls gröber gemahlen werden soll (im Millimeterbereich), wird das gemahlene Gut durch den unteren Entladeschieber 16 des Entladeabschnittes 9 entladen. Falls fein gemahlen werden soll, wird durch den seitlichen Schieber 16 entladen, d. h. das Material wird längere Zeit in der unteren Arbeitskammer 8 zurückgehalten und der Mahlvorgang verlängert.The regrind is poured into the feed section 5. It is distributed evenly over the entire cross-section by the distributor disks 6 and reaches the upper chamber 7. Under the action of the vibrators 2, the entire housing 1 begins to vibrate. The grinding media, ie the rods 15 absorb the vibration energy from the wall of the working chamber 7 and the vibration transmitters 10 and act on the material, the structure of which is thereby destroyed. The larger particles are taken up by the tip of the rods 15 while the comminuted particles move downwards, with the grinding media acting on them. The complicated shape of the rods 15 increases the contact area in the axial direction and the abrasive effect achieved together with the movable grid 13. The particles are further crushed as they pass through the holes 14 and on the contact surface between the immovable and the movable grids 12 and 13, respectively. In the case of the mutual relative vibration movement, some of the holes are not aligned with one another, but their entire, in each case aligned, clear cross-section ensures the movement of the material to the lower working chamber 8. Since the number of rods 15 is increased at the expense of their cross-section, this increases in each subsequent stage, the contact vibration area and the effectiveness of the process in terms of obtaining fine fractions is increased. If coarser grinding is to take place (in the millimeter range), the ground material is unloaded through the lower unloading slide 16 of the unloading section 9. If fine grinding is to be carried out, the lateral slide 16 unloads, ie the material is held back in the lower working chamber 8 for a longer time and the grinding process is extended.

Claims (3)

Vibrations-Brech- und -Mahlvorrichtung mit einem vertikal angeordneten und elastisch in einem Gestell (4) befestigten Gehäuse (1), das mittels Gitter in mit Mahlkörpern (15) gefüllte Arbeitskammern (7, 8) aufgeteilt ist, dadurch gekennzeichnet, daß in den Arbeitskammern (7, 8) zentral je ein als hohler Zylinder ausgebildeter und mit darin frei beweglichen Mahlkörpern (15) gefüllter Vibrationsübertrager (10) montiert ist, daß die Gitter zwischen den Arbeitskammern (7, 8) je aus einer unbeweglich am Gehäuse (1) befestigten Lochscheibe (12) und einer über dieser angeordneten, frei beweglichen Lochscheibe (13) besteht, deren Außendurchmesser kleiner ist als der Innendurchmesser des Gehäuses (1).Vibration crushing and grinding device with a vertically arranged and elastically fixed in a frame (4) housing (1) which is divided by means of grating into working chambers (7, 8) filled with grinding elements (15), characterized in that in the Working chambers (7, 8) each have a vibration transmitter (10), which is designed as a hollow cylinder and filled with freely moving grinding elements (15), that the grating between the working chambers (7, 8) each consists of an immovable on the housing (1) attached perforated disc (12) and a freely movable perforated disc (13) arranged above it, the outer diameter of which is smaller than the inner diameter of the housing (1). Vibrations-Brech- und -Mahlvorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Mahlkörper als Stäbe (15) mit spitzen oberen Enden und abgerundeten unteren Enden ausgebildet sind, und daß in der äußeren Arbeitsfläche der Mahlkörper Vertiefungen ausgebildet sind.Vibration crushing and grinding device according to claim 1, characterized in that the grinding bodies are designed as rods (15) with pointed upper ends and rounded lower ends, and that depressions are formed in the outer working surface of the grinding bodies. Vibrations-Brech- und -Mahlvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß im unteren Bereich des Gehäuses (1) unterhalb der Arbeitskammer (8) ein Entladeabschnitt (9) angeordnet ist, der einen Teil der unteren Arbeitskammer (8) umgibt.Vibration crushing and grinding device according to claim 1 or 2, characterized in that in the lower region of the housing (1) below the working chamber (8) an unloading section (9) is arranged which surrounds a part of the lower working chamber (8).
EP90102728A 1990-02-12 1990-02-12 Vibration crusher and mill Withdrawn EP0441995A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018009752A1 (en) * 2018-12-12 2020-06-18 Hugo Nienhaus Easily handled refinement of biochar in a shredding device with high sustainability of the use in feed
CN115845993A (en) * 2021-09-24 2023-03-28 南京利卡维智能科技有限公司 Anti-hardening vibration device of multi-shaft grinding machine and using method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE661915A (en) * 1964-04-06 1965-08-02
US3870238A (en) * 1973-02-22 1975-03-11 Dravo Corp Sand fracturing apparatus and method
US3897910A (en) * 1974-04-05 1975-08-05 Combustion Eng Shakeout and crushing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE661915A (en) * 1964-04-06 1965-08-02
US3870238A (en) * 1973-02-22 1975-03-11 Dravo Corp Sand fracturing apparatus and method
US3897910A (en) * 1974-04-05 1975-08-05 Combustion Eng Shakeout and crushing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018009752A1 (en) * 2018-12-12 2020-06-18 Hugo Nienhaus Easily handled refinement of biochar in a shredding device with high sustainability of the use in feed
DE102018009752B4 (en) * 2018-12-12 2025-07-24 Hugo Nienhaus Easy-to-handle refining of biochar in a shredding device with high sustainability of utilization in animal feed
CN115845993A (en) * 2021-09-24 2023-03-28 南京利卡维智能科技有限公司 Anti-hardening vibration device of multi-shaft grinding machine and using method thereof

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