EP1984115B1 - Multiroller crusher - Google Patents

Multiroller crusher Download PDF

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Publication number
EP1984115B1
EP1984115B1 EP07700215A EP07700215A EP1984115B1 EP 1984115 B1 EP1984115 B1 EP 1984115B1 EP 07700215 A EP07700215 A EP 07700215A EP 07700215 A EP07700215 A EP 07700215A EP 1984115 B1 EP1984115 B1 EP 1984115B1
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EP
European Patent Office
Prior art keywords
crusher
multiroller
crushing
crushing rollers
gap
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EP07700215A
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German (de)
French (fr)
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EP1984115A2 (en
Inventor
Viktor Raaz
Detlef Papajewski
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ThyssenKrupp Industrial Solutions AG
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ThyssenKrupp Foerdertechnik GmbH
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Publication of EP1984115A2 publication Critical patent/EP1984115A2/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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers

Definitions

  • the invention relates to a multi-roll crusher according to the preamble of claim 1.
  • Such multi-roll crushers serve in particular as crushers for crushing mineral crushed material, in particular coal, ore, stone, natural stone, bauxite, marl, clay, oil sand or similar materials. These crushers are intended to bring the material, which arrives with a particle size of up to about 150 mm, to a particle size of generally ⁇ 50 mm. It is important in the comminution of coal, in particular, that it is not or only slightly compressed during the breaking process and essentially maintains its internal structure.
  • the state of the art belongs to the DE 199 04 867 A1 a device for crushing mineral crushing material with two crushing rollers, wherein the breaking process between the crushing rollers and provided with crushing organs opposite walls of the crusher housing is carried out. There is no breaking process between the two crushing rollers, which rotate in opposite directions.
  • the invention is based on the object to propose a multi-roll crusher of the generic type, in which substantially without compression and preferably by shearing the material crushed and in the smallest possible crusher space and the lowest possible machine wear a high throughput is achieved.
  • the connecting line (V) of the axes of rotation (R) has at least one bend and over the entire width of the crusher space due to the changing directions of rotation of the crusher rolls in each case one working gap (A) and one empty gap (L) alternate.
  • the kink causes either with the same distance of the axes of rotation (R), the total width (B) of the crusher space in which the crushing rollers are arranged parallel to each other, can be reduced or that with the same width of the crusher space possibly more crushing rollers can be accommodated and thus the throughput per total width of the crusher space is increased.
  • Arrangement and size of the buckling are chosen so that the smallest possible deflection of the crushed material on its way from the feed opening of the crusher to the passage through the working gap of the wear of crushing tools and crushers is minimized.
  • the crushing rollers have uniformly or non-uniformly distributed on the circumference crushing or cutting teeth of the same or unequal tooth height and / or tooth shape, which preferably cooperate with cutting elements which are arranged at the top and / or laterally in the upper part of an anvil bar, preferably height adjustable and / or is spring-mounted in the vertical direction.
  • the cutting elements can preferably be arranged on the anvil strip on itself over the entire length of the crushing rollers extending strips, the cutting teeth can engage the crushing rollers in tooth spaces of the strip.
  • the multi-roll crusher according to the invention can also be embodied without an in-edge strip or without a cutting element.
  • the entire material is comminuted when passing through the working gap between the two crushing rollers or between a crushing roller and crushing teeth on the wall side, wherein the adjustable and / or resilient mounting of the anvil bar prevents interference caused by excessively large or too hard chunks of material.
  • the adjustable and / or resilient mounting of the anvil bar prevents interference caused by excessively large or too hard chunks of material.
  • To adjust the grain size of the product and the working gap can be adjusted by changing the axial distance of the crushing rollers and / or by changing the distance of the anvil bar.
  • According to the required particle size of the product and the cutting teeth of two adjacent crushing rollers can be arranged angularly offset on the roll circumference.
  • a working gap and an empty gap alternate over the entire width of the breaker space due to the changing directions of rotation of the breaker rolls.
  • the material is essentially conveyed from top to bottom or obliquely down and thereby crushed.
  • the gap width of the empty gap is less than or equal to the working gap.
  • the cutting teeth of the adjacent crushing rollers can be arranged angularly offset and, if necessary, their peripheral speed synchronized so that the distance between the two rollers can be reduced without teeth of these rollers touching each other.
  • the connecting line between the axes of rotation of two adjacent crushing rollers in the region of a working gap horizontally or slightly inclined at an angle ⁇ of up to 30 ° to the horizontal.
  • the connecting line in the region of an empty gap can have an angle ⁇ of up to 90 or 75 °, preferably 30 to 60 ° to the horizontal.
  • Large angles ⁇ can be advantageous, in particular in the case of crushing rollers of different diameters adjacent to the empty gap.
  • the angle should be ⁇ ⁇ the angle ⁇ .
  • each case two crushing rollers, which form an empty gap between them, as a structural unit on a rocker pivotally and / or displaceably mounted on the housing of the multi-roll crusher.
  • This rocker preferably includes right and left outside of the crusher housing arranged and mounted roll carrier, wherein the axes or waves of the associated crusher rollers can be passed through suitable slots of the crusher housing.
  • the two belonging to a pair of rollers roller carrier of a rocker can be pivoted together in each case about a parallel to the axes of rotation of the crushing rollers arranged rotational axis, wherein preferably the pivoting of the rocker by a adjustable stop is limited and acts on the rocker a preferably preloaded spring in the direction of a stop.
  • FIGS. 1 to 4 are crushing rollers 1, 1 '2, 2' shown as smooth cylindrical rollers, being readily on the circumference of the rollers, as in the Fig. 8 to 13 represented, crushing or cutting teeth 4 may be present.
  • no breaking or cutting teeth 4 were drawn for the sake of simplicity.
  • the breaking or cutting teeth 4 are particularly useful if, under the working gaps A, A 'in each case over the entire length of the crushing rollers extending anvil strip 3 and outer crushing teeth 14 are present.
  • the anvil strip 3 can accordingly Fig.
  • the anvil strip 3 as shown in FIG Fig. 7 Apart from the cutting bar 7 also have cutting elements 5 at the top and also cutting elements 6 in the lateral upper area.
  • the entire anvil strip is preferably vertical or according to their inclination (see, eg Fig. 2 . 6 . 12 and 13 ) adjustable in the transport direction of the material and in particular resiliently mounted on springs 8.
  • outer crushing teeth 14 may be arranged, which cooperate with the crushing or cutting teeth 4 on the adjacent crushing rollers 1 ', 2'. These outer crushing teeth 14 may be similar to the anvil strip 3 adjustable and resiliently mounted.
  • Fig. 1 can explain the simplest embodiment of the multi-roll crusher according to the invention.
  • the dotted straight line V connects the axes of rotation R of the two crushing rollers 1 and 2 and the axes of rotation R of the crushing roller 2 with the deeper crushing roller 1 '.
  • the defined in claim 1 according to the invention kink in the connecting line V is therefore present at the axis of rotation R of the crushing roller 2.
  • the connecting line V is extended horizontally up to the walls 12, 13.
  • the working gap A (see. Fig. 3 ) having the gap width a defined in the direction of the connecting line V.
  • the marginal crushing rollers 1 ', 2' and the outer crushing teeth 14 are each the working gap A '(see. Fig. 3 ), with the gap width a '.
  • the sum of the gap widths a and a 'on the total width B of the crusher space is the decisive measure of the throughput of the multi-roll crusher. The point here is to maximize the sum of these gap widths a, a 'on the total width B.
  • the second decisive measure are the gap widths I and I 'which also extend in the direction of the connecting line V in the region of the empty column L, L' (cf. Fig. 2 and 3 ).
  • the empty gap L is here as the gap between two "internal" crushing rollers 1, 2 or 1, 2 'or 2, I', while the blank gap L ', the gap between the edge-side crushing rollers 1, 2 and the wall 12, 13, on which no outer crushing teeth 14 are arranged.
  • the breaking or cutting teeth 4 move downwards in the region of a working gap A, A ', so that the material introduced above the crushing rolls is moved from top to bottom through the working gap A, A'.
  • the breaking or cutting teeth move upwards so that larger material arriving from above is normally stopped or transported to the next working gap A, A'.
  • the gap width I, I 'in the region of an empty gap L, L' can be chosen so small that the crushing or cutting teeth 4 can be moved past each other with the shortest possible distance.
  • the gap widths I, I ' are in any case smaller than or equal to the gap widths a, a'.
  • the gap width I, I ' have a certain minimum, so that the resulting fine grain can also freely through the blank gap L, L' trickle down.
  • the crushing rollers are to be arranged offset from one another in the vertical direction and pushed together in the horizontal direction to achieve the lowest possible overall width B, wherein the required gap widths a, a ', I, I' are maintained and the deflection of the material flow in the crusher space is minimized becomes.
  • the respective width required in the horizontal direction in the crusher space decreases considerably.
  • the angle ⁇ can be up to 30 ° to the horizontal, while the angle ⁇ up to 90 ° or 75 °, preferably between 30 and 60 ° can be.
  • Fig. 1 could the crushing roller 1 'also be arranged above the other two crushing rollers 1 and 2.
  • the middle crushing roller 2 could lie in a lower position between the two crushing rollers 1, 1 '.
  • FIGS. 3 and 4 are preferred versions, each with four crushing rollers 1, 2, 1 ', 2' shown, because there is a total of a working gap A and two working gaps A 'are present.
  • Fig. 4 carry the side walls 12, 13 outer crushing teeth 14, which in Fig. 3 are not available.
  • FIGS. 8 to 13 In each case eight crushing rollers are shown in a crusher space, with three middle working gaps A and in each case additionally a working gap A 'on the walls 12, 13 are present.
  • the task direction of the material from above and the further transport after the breaking process is indicated in these figures by dashed arrows.
  • FIGS. 9 to 13 are each two adjacent crushing rollers, which have an empty gap L between them, summarized by a rocker 11 to form a structural unit.
  • the rocker 11 preferably contains and supports roller carriers 11, 11 "arranged and mounted on the outside of the housing on the right and on the left ..
  • the rotation axes R of the associated crushing rollers are guided through slots in the housing (not shown) is pressed against this stop by the prestressed spring 16.
  • This resilient mounting of the assembly has the advantage that when seizure of too hard or non-breakable materials, the rocker is moved about the axis of rotation 15 against the spring 16, so that the two associated working gaps A, A 'at the same time by essentially the same extent can open automatically. Once the obstacle is eliminated, the rocker 11 is pivoted back to the starting position by means of the spring 16.

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

Abstract

A multiple roll crusher is provided for crushing of mineral material, more particularly of coal or oil sand. The multiple roll crusher includes at least three crusher rolls (1, 2, 5 1′, 2′), the rotation axes (R) of which lie in parallel to each other and horizontal or roughly horizontal. All directly neighboring crusher rolls (1, 2, 1′, 2′) have opposite directions of rotation. A connecting line (V) of the rotation axes (R) has at least one kink.

Description

Die Erfindung bezieht sich auf einen Mehrwalzenbrecher gemäß Oberbegriff des Anspruches 1.The invention relates to a multi-roll crusher according to the preamble of claim 1.

Derartige Mehrwalzenbrecher dienen insbesondere als Brecher zur Zerkleinerung mineralischen Brechgutes, wie insbesondere Kohle, Erz, Stein, Naturstein, Bauxit, Mergel, Ton, Ölsand oder ähnlicher Materialien. Diese Brecher sollen dabei das Material, das mit einer Korngröße von bis zu ca. 150 mm ankommt auf eine Korngröße von in der Regel < 50 mm bringen. Wichtig ist bei der Zerkleinerung insbesondere von Kohle, dass diese bei dem Brechvorgang nicht oder nur wenig komprimiert wird und im Wesentlichen ihre innere Struktur beibehalten bleibt.Such multi-roll crushers serve in particular as crushers for crushing mineral crushed material, in particular coal, ore, stone, natural stone, bauxite, marl, clay, oil sand or similar materials. These crushers are intended to bring the material, which arrives with a particle size of up to about 150 mm, to a particle size of generally <50 mm. It is important in the comminution of coal, in particular, that it is not or only slightly compressed during the breaking process and essentially maintains its internal structure.

Zum Stand der Technik gehört nach der DE 199 04 867 A1 eine Vorrichtung für die Zerkleinerung mineralischen Brechgutes mit zwei Brechwalzen, wobei der Brechvorgang zwischen den Brechwalzen und den mit Brechorganen versehenen gegenüberliegenden Wänden des Brechergehäuses erfolgt. Zwischen den beiden Brechwalzen, die sich gegensinnig drehen, findet dabei kein Brechvorgang statt.The state of the art belongs to the DE 199 04 867 A1 a device for crushing mineral crushing material with two crushing rollers, wherein the breaking process between the crushing rollers and provided with crushing organs opposite walls of the crusher housing is carried out. There is no breaking process between the two crushing rollers, which rotate in opposite directions.

Aus der US-A 5,547,136 ist eine Mühle bekannt, bei der der Brechvorgang zwischen zwei Walzen mit am Umfang auf schneckenförmigen Linien angeordneten Schneidelementen erfolgt. Unterhalb des Arbeitsspaltes ist dabei ein sich in Walzenlängsrichtung erstreckender fester Amboss angeordnet, an dem beidseitig der äußeren Form der Brechwalzen angepasste bogenförmige Siebe befestigt sind. Das nicht durch die Löcher der Siebe fallende Material wird oberhalb dieser Siebe wieder zurück in den Aufgaberaum transportiert. Diese Mühle dient im Wesentlichen zum Feinbrechen bzw. -mahlen von Abfallmaterial auf vergleichsmäßig geringe Korngrößen.From the US-A 5,547,136 a mill is known in which the breaking process between two rollers is carried out with circumferentially arranged on helical cutting elements. Below the working gap, a solid anvil extending in the roll longitudinal direction is arranged, on which arcuate sieves adapted to the outer shape of the crushing rolls are fastened on both sides. The material not falling through the holes of the sieves is transported above these sieves back into the receiving space. This mill essentially serves for fine breaking or grinding of waste material to comparatively small particle sizes.

In der WO 94/21 381 A1 ist eine Anordnung zum Brechen und Kühlen des aus einem Brennofen austretenden bereits relativ feinkörnigen Guts beschrieben, wobei der Brecher mehrere nebeneinander und auf einer Höhe angeordnete, fliegend gelagerte, walzenförmige Brechelemente aufweist. Die Drehrichtung der Brechwalzen wechselt dabei von einer zur anderen Walze. Die nebeneinander auf derselben Höhe angeordneten Brechwalzen füllen dabei die gesamte Breite des Abwurfbereiches des Einlaufschachtes aus, wobei jeweils ein Arbeitsspalt zwischen den Brechwalzen freigelassen ist, dessen Größe durch die gewünschte Korngröße des Brenngutes bestimmt ist.In the WO 94/21 381 A1 an arrangement for breaking and cooling of the emerging from a kiln already relatively fine-grained Guts is described, wherein the crusher several juxtaposed and arranged at a height, having cantilevered, roller-shaped crushing elements. The direction of rotation of the crushing rollers changes from one to another roller. The juxtaposed at the same height crushing rollers thereby fill the entire width of the discharge area of the inlet shaft, in each case a working gap between the crushing rollers is released, whose size is determined by the desired particle size of the fuel.

Aus der US 5,595,350 A ist ein weiterer Walzenbrecher am Ende einer Kühleinrichtung ersichtlich, wobei vier Brechwalzen nebeneinander angeordnet sind, von denen von der Aufgabeseite her die ersten drei sich jeweils nach rechts drehen und die vierte sich dazu entgegengesetzt nach links dreht. Das Material, das von der Aufgabenseite her kommt und noch nicht durch die Zwischenräume zwischen den ersten Walzen gefallen ist, wird also in dem Spalt zwischen der dritten und vierten Walze zerkleinert. Die vier Walzen werden hierbei unterschiedlich belastet.From the US 5,595,350 A is another roll crusher at the end of a cooling device can be seen, wherein four crushing rollers are arranged side by side, of which from the task side, the first three turn each to the right and the fourth to the opposite turns to the left. The material that comes from the task side and has not yet fallen through the spaces between the first rollers, so is crushed in the gap between the third and fourth roller. The four rollers are loaded differently.

Der Erfindung liegt die Aufgabe zu Grunde, einen Mehrwalzenbrecher der gattungsgemäßen Art vorzuschlagen, bei dem im Wesentlichen ohne Komprimieren und bevorzugt durch Schervorgänge das Material zerkleinert und bei dem auf möglichst kleinem Brecherraum und bei möglichst geringem Maschinenverschleiß eine hohe Durchsatzleistung erreicht wird.The invention is based on the object to propose a multi-roll crusher of the generic type, in which substantially without compression and preferably by shearing the material crushed and in the smallest possible crusher space and the lowest possible machine wear a high throughput is achieved.

Die Lösung dieser Aufgabe ist im Patentanspruch 1 angegeben. Die Unteransprüche 2 bis 19 enthalten sinnvolle Ausführungsformen dazu.The solution of this problem is specified in claim 1. The dependent claims 2 to 19 contain useful embodiments of this.

Bei dem erfindungsgemäßen Mehrwalzenbrecher mit mindestens drei Brechwalzen in einem Brecherraum ist vorgesehen, dass alle direkt benachbarten Brechwalzen entgegengesetzte Drehrichtungen besitzen, die Verbindungslinie (V) der Rotationsachsen (R) mindestens einen Knick aufweist und über die gesamte Breite des Brecherraumes aufgrund der wechselnden Drehrichtungen der Brecherwalzen jeweils ein Arbeitsspalt (A) und ein Leerspalt (L) sich abwechseln. Der Knick bewirkt, dass entweder bei gleichbleibendem Abstand der Rotationsachsen (R) die Gesamtbreite (B) des Brecherraumes, in dem die Brechwalzen parallel nebeneinander angeordnet sind, verringert werden kann oder dass bei gleichbleibender Breite des Brecherraumes eventuell mehr Brechwalzen untergebracht werden können und damit die Durchsatzleistung pro Gesamtbreite des Brecherraumes vergrößert wird. Anordnung und Größe des Knicks werden so gewählt, dass durch möglichst geringe Umlenkung des Brechgutes auf seinem Weg von der Zufuhröffnung des Brechers bis zum Durchtritt durch den Arbeitsspalt der Verschleiß von Brechwerkzeugen und Brecher minimiert wird.In the multi-roll crusher according to the invention with at least three crushing rollers in a crusher space, it is provided that all directly adjacent crushing rollers have opposite directions of rotation, the connecting line (V) of the axes of rotation (R) has at least one bend and over the entire width of the crusher space due to the changing directions of rotation of the crusher rolls in each case one working gap (A) and one empty gap (L) alternate. The kink causes either with the same distance of the axes of rotation (R), the total width (B) of the crusher space in which the crushing rollers are arranged parallel to each other, can be reduced or that with the same width of the crusher space possibly more crushing rollers can be accommodated and thus the throughput per total width of the crusher space is increased. Arrangement and size of the buckling are chosen so that the smallest possible deflection of the crushed material on its way from the feed opening of the crusher to the passage through the working gap of the wear of crushing tools and crushers is minimized.

Die Brechwalzen besitzen am Umfang gleichmäßig oder ungleichmäßig verteilt Brech- oder Schneidzähne gleicher oder ungleicher Zahnhöhe und/oder Zahnform, die vorzugsweise mit Schneidelementen zusammenwirken welche an der Spitze und/oder seitlich im oberen Bereich an einer Ambossleiste angeordnet sind, die vorzugsweise höhenverstellbar und/oder in vertikaler Richtung federnd gelagert ist. Die Schneidelemente können vorzugsweise an der Ambossleiste an sich über die gesamte Länge der Brechwalzen erstreckenden Leisten angeordnet sein, wobei die Schneidzähne an den Brechwalzen in Zahnlücken der Leiste eingreifen können. Der erfindungsgemäße Mehrwalzenbrecher kann jedoch auch ohne Ambossleiste bzw. ohne Schneidelement an diesen ausgeführt sein. Bei dem erfindungsgemäßen Mehrwalzenbrecher wird das gesamte Material beim Durchgang durch den Arbeitsspalt zwischen den beiden Brechwalzen oder zwischen einer Brechwalze und wandseitigen Brechzähnen zerkleinert, wobei die einstellbare und/oder federnde Lagerung der Ambossleiste Störungen durch zu große oder zu harte Materialbrocken verhindert. Zur Einstellung der Korngröße des Produktes kann auch der Arbeitsspalt durch Veränderung des Achsabstandes der Brechwalzen und/oder durch Veränderung des Abstandes der Ambossleiste eingestellt werden. Entsprechend der erforderlichen Korngröße des Produktes können auch die Schneidzähne zweier benachbarter Brechwalzen am Walzenumfang winkelversetzt angeordnet sein.The crushing rollers have uniformly or non-uniformly distributed on the circumference crushing or cutting teeth of the same or unequal tooth height and / or tooth shape, which preferably cooperate with cutting elements which are arranged at the top and / or laterally in the upper part of an anvil bar, preferably height adjustable and / or is spring-mounted in the vertical direction. The cutting elements can preferably be arranged on the anvil strip on itself over the entire length of the crushing rollers extending strips, the cutting teeth can engage the crushing rollers in tooth spaces of the strip. However, the multi-roll crusher according to the invention can also be embodied without an in-edge strip or without a cutting element. In the multi-roll crusher according to the invention, the entire material is comminuted when passing through the working gap between the two crushing rollers or between a crushing roller and crushing teeth on the wall side, wherein the adjustable and / or resilient mounting of the anvil bar prevents interference caused by excessively large or too hard chunks of material. To adjust the grain size of the product and the working gap can be adjusted by changing the axial distance of the crushing rollers and / or by changing the distance of the anvil bar. According to the required particle size of the product and the cutting teeth of two adjacent crushing rollers can be arranged angularly offset on the roll circumference.

Erfindungsgemäß wechseln sich über die gesamte Breite des Brecherraumes auf Grund der wechselnden Drehrichtungen der Brechwalzen jeweils ein Arbeitsspalt und ein Leerspalt ab. Durch den Arbeitsspalt wird das Material im Wesendlichen von oben nach unten oder schräg nach unten gefördert und dabei zerkleinert. ImAccording to the invention, a working gap and an empty gap alternate over the entire width of the breaker space due to the changing directions of rotation of the breaker rolls. Through the working gap, the material is essentially conveyed from top to bottom or obliquely down and thereby crushed. in the

Bereich des Leerspaltes bewegen sich die Brech- oder Schneidzähne am Umfang der Brechwalzen nach oben bzw. schräg nach oben, sodass dort keineIn the area of the empty gap, the crushing or cutting teeth move upwards or obliquely upwards at the circumference of the crushing rollers, so that there is no

Zerkleinerung des Materials stattfindet. Die Spaltweite des Leerspaltes ist kleiner oder gleich der des Arbeitsspaltes. Insbesondere im Bereich des Leerspaltes können die Schneidzähne der benachbarten Brechwalzen winkelversetzt angeordnet und bei Bedarf ihre Umfangsgeschwindigkeit synchronisiert sein, sodass der Abstand zwischen den beiden Walzen verringert werden kann, ohne dass Zähne dieser Walzen einander berühren.Comminution of the material takes place. The gap width of the empty gap is less than or equal to the working gap. In particular, in the region of the void gap, the cutting teeth of the adjacent crushing rollers can be arranged angularly offset and, if necessary, their peripheral speed synchronized so that the distance between the two rollers can be reduced without teeth of these rollers touching each other.

Um die erfindungsgemäße Verkleinerung der Breite des Brecherraumes zu erreichen, hat es sich als günstig erwiesen, dass die Verbindungslinie zwischen den Rotationsachsen zweier benachbarter Brechwalzen im Bereich eines Arbeitsspaltes horizontal oder leicht geneigt in einem Winkel α von bis zu 30° zur Horizontalen verläuft. Gleichzeitig kann die Verbindungslinie im Bereich eines Leerspaltes einen Winkel β von bis zu 90 bzw. 75°, vorzugsweise 30 bis 60° zur Horizontalen besitzen. Große Winkel β können insbesondere bei am Leerspalt benachbarten Brechwalzen unterschiedlichen Durchmessers vorteilhaft sein. Insgesamt sollte dabei der Winkel α ≤ dem Winkel β sein. Durch diese erfindungsgemäßen Neigungen der Verbindungslinie kann im Bereich des Arbeitsspaltes für die verschiedenen Materialien ein möglichst ungehinderter Materialfluss gewährleistet und gleichzeitig im Bereich eines Leerspaltes ein unerwünschtes Aufhalten des Materialflusses durch grobes Material von oberhalb des Leerspaltes verhindert werden. In jedem Fall wird man zur Verringerung der Breite des Brecherraumes versuchen, zumindest den Winkel β, abhängig von dem jeweiligen Material, möglichst groß zu machen.In order to achieve the invention reduction of the width of the crusher space, it has proved to be favorable that the connecting line between the axes of rotation of two adjacent crushing rollers in the region of a working gap horizontally or slightly inclined at an angle α of up to 30 ° to the horizontal. At the same time, the connecting line in the region of an empty gap can have an angle β of up to 90 or 75 °, preferably 30 to 60 ° to the horizontal. Large angles β can be advantageous, in particular in the case of crushing rollers of different diameters adjacent to the empty gap. Overall, the angle should be α ≤ the angle β. By means of these inclinations of the connecting line according to the invention, an unhindered flow of material can be ensured in the region of the working gap for the various materials and, at the same time in the region of an empty gap, undesired arrest of the material flow by coarse material from above the empty gap can be prevented. In any case, one will try to reduce the width of the crusher space to make at least the angle β, depending on the respective material, as large as possible.

Erfindungsgemäß wird weiterhin vorgeschlagen, jeweils zwei Brechwalzen, die einen Leerspalt zwischen sich bilden, als Baueinheit an einer am Gehäuse des Mehrwalzenbrechers drehgelenkig und/oder verschiebbar gelagerten Wippe anzuordnen. Diese Wippe beinhaltet vorzugsweise rechts und links außerhalb des Brechergehäuses angeordnete und gelagerte Walzenträger, wobei die Achsen bzw. Wellen der zugehörigen Brecherwalzen durch geeignete Schlitze des Brechergehäuses hindurch geführt werden können. Die beiden zu einem Walzenpaar gehörigen Walzenträger einer Wippe können gemeinsam jeweils um eine parallel zu den Rotationsachsen der Brechwalzen angeordnete Drehachse schwenkbar sein, wobei vorzugsweise die Schwenkbarkeit der Wippe durch einen verstellbaren Anschlag begrenzt ist und auf die Wippe eine vorzugsweise vorgespannte Feder in Richtung auf einen Anschlag wirkt. Durch diese federnde Lagerung ist es möglich, dass die Brechwalzen der beiden am betroffenen Arbeitsspalt benachbarten Wippen z.B. bei Überlast auf Grund von zu hartem oder nicht brechbarem Material ausweichen können und der Arbeitsspalt dadurch kurzzeitig vergrößert und durch die Federn wieder in seine Ausgangsstellung zurückgeführt wird.According to the invention, it is further proposed to arrange in each case two crushing rollers, which form an empty gap between them, as a structural unit on a rocker pivotally and / or displaceably mounted on the housing of the multi-roll crusher. This rocker preferably includes right and left outside of the crusher housing arranged and mounted roll carrier, wherein the axes or waves of the associated crusher rollers can be passed through suitable slots of the crusher housing. The two belonging to a pair of rollers roller carrier of a rocker can be pivoted together in each case about a parallel to the axes of rotation of the crushing rollers arranged rotational axis, wherein preferably the pivoting of the rocker by a adjustable stop is limited and acts on the rocker a preferably preloaded spring in the direction of a stop. By this resilient mounting, it is possible that the crushing rollers of the two adjacent working gap adjacent rockers can dodge, for example, overload due to too hard or non-breakable material and the working gap is thereby briefly increased and returned by the springs back to its original position.

Die Erfindung wird anhand der beigefügten Figuren 1 bis 13 beispielsweise näher erläutert, wobei in den Figuren 1 bis 4 und 6 bis 13 in einem senkrechten Schnitt die Anordnung der Brechwalzen in einem Brecherraum skizzenhaft dargestellt ist. Es zeigen:

Fig. 1 und 2
Anordnungen von jeweils drei Brechwalzen in einem Brecherraum
Fig. 3 und 4
Anordnungen von vier Brechwalzen in einem Brecherraum
Fig. 5
eine teilweise perspektivische Darstellung einer Leiste 10 mit Schneidleiste 7
Fig. 6
eine Anordnung von fünf Brechwalzen in einem Brecherraum
Fig. 7
eine Anordnung von sechs Brechwalzen in einem Brecherraum
Fig. 8 bis 13
verschiedene Anordnungen von jeweils acht Brechwalzen in einem Brecherraum.
The invention will be apparent from the attached FIGS. 1 to 13 for example, explained in more detail, wherein in the FIGS. 1 to 4 and 6 to 13 in a vertical section, the arrangement of the crushing rollers is shown sketchily in a crusher room. Show it:
Fig. 1 and 2
Arrangements of three crushing rollers in a crusher space
3 and 4
Arrangements of four crushing rollers in a crusher room
Fig. 5
a partial perspective view of a bar 10 with cutting bar. 7
Fig. 6
an arrangement of five crushing rollers in a crusher space
Fig. 7
an arrangement of six crushing rollers in a crusher space
Fig. 8 to 13
various arrangements of eight crushing rollers in a crusher space.

In den Figuren 1 bis 4, 6 und 7 sind Brechwalzen 1, 1' 2, 2' als glatte zylindrische Walzen dargestellt, wobei ohne weiteres am Umfang der Walzen, wie in den Fig. 8 bis 13 dargestellt, Brech- oder Schneidzähne 4 vorhanden sein können. In den ersten Figuren wurden zur vereinfachten Darstellung keine Brech- oder Schneidzähne 4 eingezeichnet. Die Brech- oder Schneidzähne 4 sind aber insbesondere dann sinnvoll, wenn unter den Arbeitsspalten A, A' jeweils eine sich über die gesamte Länge der Brechwalzen erstreckende Ambossleiste 3 bzw. äußere Brechzähne 14 vorhanden sind. Die Ambossleiste 3 kann entsprechend Fig. 5 an der Oberseite mit einer auswechselbaren Leiste 10 versehen sein, wobei oben eine waagerechte durchgehende Schneidleiste 7 und seitlich Zahnlücken 9 angeordnet sind, in die die Brech- oder Schneidzähne 4 am Umfang der Brechwalzen 1, 2 ganz oder teilweise hineinragen. Die Ambossleiste 3 kann entsprechend der Darstellung in Fig. 7 außer der Schneidleiste 7 auch an der Spitze Schneidelemente 5 und im seitlichen oberen Bereich auch Schneidelemente 6 besitzen. Die gesamte Ambossleiste ist bevorzugt vertikal oder entsprechend ihrer Neigung (vgl. z.B. Fig. 2, 6, 12 und 13) in Transportrichtung des Materials verstellbar und insbesondere über Federn 8 nachgiebig gelagert. An den beiden Wänden 12, 13 können jeweils zusätzlich äußere Brechzähne 14 angeordnet sein, die mit den Brech- oder Schneidzähnen 4 auf den angrenzenden Brechwalzen 1', 2' zusammenarbeiten. Auch diese äußeren Brechzähne 14 können ähnlich wie die Ambossleiste 3 verstellbar und federnd gelagert sein.In the FIGS. 1 to 4 . 6 and 7 are crushing rollers 1, 1 '2, 2' shown as smooth cylindrical rollers, being readily on the circumference of the rollers, as in the Fig. 8 to 13 represented, crushing or cutting teeth 4 may be present. In the first figures, no breaking or cutting teeth 4 were drawn for the sake of simplicity. However, the breaking or cutting teeth 4 are particularly useful if, under the working gaps A, A 'in each case over the entire length of the crushing rollers extending anvil strip 3 and outer crushing teeth 14 are present. The anvil strip 3 can accordingly Fig. 5 be provided at the top with an interchangeable bar 10, wherein above a horizontal continuous cutting bar 7 and tooth spaces 9 are arranged laterally, into which the breaking or cutting teeth 4 at the periphery of the crushing rollers 1, 2 protrude wholly or partially. The anvil strip 3, as shown in FIG Fig. 7 Apart from the cutting bar 7 also have cutting elements 5 at the top and also cutting elements 6 in the lateral upper area. The entire anvil strip is preferably vertical or according to their inclination (see, eg Fig. 2 . 6 . 12 and 13 ) adjustable in the transport direction of the material and in particular resiliently mounted on springs 8. On the two walls 12, 13 in each case additionally outer crushing teeth 14 may be arranged, which cooperate with the crushing or cutting teeth 4 on the adjacent crushing rollers 1 ', 2'. These outer crushing teeth 14 may be similar to the anvil strip 3 adjustable and resiliently mounted.

Anhand der Fig. 1 lässt sich die einfachste Ausführungsform des erfindungsgemäßen Mehrwalzenbrechers erläutern. Dort sind zwei Brechwalzen 1, 2 auf gleicher Höhe nebeneinander angeordnet. Die gepunktet dargestellte gerade Verbindungslinie V verbindet die Rotationsachsen R der beiden Brechwalzen 1 und 2 und die Rotationsachsen R der Brechwalze 2 mit der tiefer angeordneten Brechwalze 1'. Der erfindungsgemäß im Anspruch 1 definierte Knick in der Verbindungslinie V ist also bei der Rotationsachse R der Brechwalze 2 vorhanden. Nach außen hin ist die Verbindungslinie V jeweils waagerecht bis zu den Wänden 12, 13 verlängert. Zwischen den beiden Brechwalzen 1, 2 befindet sich jeweils der Arbeitsspalt A (vgl. Fig. 3), der die in Richtung der Verbindungslinie V definierte Spaltweite a besitzt. Zwischen den randseitigen Brechwalzen 1', 2' und den äußeren Brechzähnen 14 befindet sich jeweils der Arbeitsspalt A' (vgl. Fig. 3), mit der Spaltweite a'. Die Summe der Spaltweiten a und a' auf der Gesamtbreite B des Brecherraumes ist das entscheidende Maß für den Durchsatz des Mehrwalzenbrechers. Hier geht es darum, die Summe dieser Spaltweiten a, a' auf der Gesamtbreite B möglichst groß zu erreichen. Das zweite entscheidende Maß sind die sich ebenfalls in Richtung der Verbindungslinie V erstreckenden Spaltweiten I und I' im Bereich der Leerspalte L, L' (vgl. Fig. 2 und 3). Der Leerspalt L ist dabei als der Spalt zwischen jeweils zwei "inneren" Brechwalzen 1, 2 oder 1, 2' oder 2, I' definiert, während der Leerspalt L' der Spalt zwischen den randseitigen Brechwalzen 1, 2 und der Wand 12, 13, an der keine äußeren Brechzähne 14 angeordnet sind. Grundsätzlich bewegen sich die Brech- oder Schneidzähne 4 im Bereich eines Arbeitsspaltes A, A' nach unten, sodass das oberhalb der Brechwalzen aufgegebene Material von oben nach unten durch den Arbeitsspalt A, A' bewegt wird. Im Bereich eines Leerspaltes L, L' bewegen sich die Brech- oder Schneidzähne nach oben, sodass von oben ankommendes größeres Material normalerweise aufgehalten bzw. zum nächsten Arbeitsspalt A, A' transportiert wird. Die Spaltweite I, I' im Bereich eines Leerspaltes L, L' kann so gering gewählt werden, dass die Brech- oder Schneidzähne 4 mit möglichst geringem Abstand aneinander vorbeibewegt werden können. Die Spaltweiten I, I' sind auf jeden Fall kleiner oder gleich den Spaltweiten a, a'. Abhängig von dem anfallenden Material kann die Spaltweite I, I' ein gewisses Mindestmaß besitzen, sodass das anfallende Feinkorn ungehindert auch durch den Leerspalt L, L' herabrieseln kann.Based on Fig. 1 can explain the simplest embodiment of the multi-roll crusher according to the invention. There two crushing rollers 1, 2 are arranged side by side at the same height. The dotted straight line V connects the axes of rotation R of the two crushing rollers 1 and 2 and the axes of rotation R of the crushing roller 2 with the deeper crushing roller 1 '. The defined in claim 1 according to the invention kink in the connecting line V is therefore present at the axis of rotation R of the crushing roller 2. Outwardly, the connecting line V is extended horizontally up to the walls 12, 13. Between the two crushing rollers 1, 2 is in each case the working gap A (see. Fig. 3 ) having the gap width a defined in the direction of the connecting line V. Between the marginal crushing rollers 1 ', 2' and the outer crushing teeth 14 are each the working gap A '(see. Fig. 3 ), with the gap width a '. The sum of the gap widths a and a 'on the total width B of the crusher space is the decisive measure of the throughput of the multi-roll crusher. The point here is to maximize the sum of these gap widths a, a 'on the total width B. The second decisive measure are the gap widths I and I 'which also extend in the direction of the connecting line V in the region of the empty column L, L' (cf. Fig. 2 and 3 ). The empty gap L is here as the gap between two "internal" crushing rollers 1, 2 or 1, 2 'or 2, I', while the blank gap L ', the gap between the edge-side crushing rollers 1, 2 and the wall 12, 13, on which no outer crushing teeth 14 are arranged. In principle, the breaking or cutting teeth 4 move downwards in the region of a working gap A, A ', so that the material introduced above the crushing rolls is moved from top to bottom through the working gap A, A'. In the area of an empty gap L, L ', the breaking or cutting teeth move upwards so that larger material arriving from above is normally stopped or transported to the next working gap A, A'. The gap width I, I 'in the region of an empty gap L, L' can be chosen so small that the crushing or cutting teeth 4 can be moved past each other with the shortest possible distance. The gap widths I, I 'are in any case smaller than or equal to the gap widths a, a'. Depending on the resulting material, the gap width I, I 'have a certain minimum, so that the resulting fine grain can also freely through the blank gap L, L' trickle down.

Erfindungsgemäß geht es darum, die Brechwalzen in vertikaler Richtung zueinander versetzt anzuordnen und in horizontaler Richtung zur Erzielung einer möglichst geringen Gesamtbreite B zusammenzuschieben, wobei jeweils die erforderlichen Spaltweiten a, a', I, I' eingehalten werden und die Umlenkung des Materialstromes im Brecherraum minimiert wird. Wie aus den Figuren ohne weiteres ersichtlich ist, verringert sich bei jeder geneigten Anordnung der Verbindungslinie V zur Horizontalen die jeweilige in horizontaler Richtung benötigte Breite im Brecherraum erheblich. Entsprechend der Zuführrichtung des Materials oberhalb der Brechwalzen zu dem jeweiligen Arbeitsspalt A, A' hat es sich gezeigt, dass der Winkel α bis zu 30° zur Horizontalen betragen kann, während der Winkel β bis zu 90° bzw. 75°, vorzugsweise zwischen 30 und 60° betragen kann.According to the invention, the crushing rollers are to be arranged offset from one another in the vertical direction and pushed together in the horizontal direction to achieve the lowest possible overall width B, wherein the required gap widths a, a ', I, I' are maintained and the deflection of the material flow in the crusher space is minimized becomes. As can be readily seen from the figures, with each inclined arrangement of the connecting line V to the horizontal, the respective width required in the horizontal direction in the crusher space decreases considerably. According to the feed direction of the material above the crushing rollers to the respective working gap A, A ', it has been found that the angle α can be up to 30 ° to the horizontal, while the angle β up to 90 ° or 75 °, preferably between 30 and 60 ° can be.

Neben den in den Figuren dargestellten bevorzugten Ausführungsformen gibt es grundsätzlich auch weitere Möglichkeiten zur versetzten Anordnung der Brechwalzen 1, 1', 2, 2'. Entspechend Fig. 1 könnte die Brechwalze 1' auch oberhalb der beiden übrigen Brechwalzen 1 und 2 angeordnet sein. Darüber hinaus oder stattdessen könnte auch eine Brechwalze 2' an der Wand 12 oberhalb oder unterhalb der beiden Brechwalzen 1, 2 mit äußeren Brechzähnen 14 zusammenarbeiten. Auch entsprechend der Anorndung von Fig. 2 könnte die mittlere Brechwalze 2 z.B. in einer unteren Position zwischen den beiden Brechwalzen 1, 1' liegen.In addition to the preferred embodiments shown in the figures, there are in principle also other possibilities for the staggered arrangement of the crushing rollers 1, 1 ', 2, 2'. Entspechend Fig. 1 could the crushing roller 1 'also be arranged above the other two crushing rollers 1 and 2. In addition, or instead could also a crushing roller 2 'on the wall 12 above or below the two crushing rollers 1, 2 with outer crushing teeth 14th work together. Also according to the request of Fig. 2 For example, the middle crushing roller 2 could lie in a lower position between the two crushing rollers 1, 1 '.

In den Figuren 3 und 4 sind bevorzugte Ausführungen mit jeweils vier Brechwalzen 1, 2, 1', 2' dargestellt, weil dort insgesamt ein Arbeitsspalt A und zwei Arbeitsspalte A' vorhanden sind. In Fig. 4 tragen die Seitenwände 12, 13 äußere Brechzähne 14, die in Fig. 3 nicht vorhanden sind.In the FIGS. 3 and 4 are preferred versions, each with four crushing rollers 1, 2, 1 ', 2' shown, because there is a total of a working gap A and two working gaps A 'are present. In Fig. 4 carry the side walls 12, 13 outer crushing teeth 14, which in Fig. 3 are not available.

In Weiterführung der erfindungsgemäßen Idee besitzt der Mehrwalzenbrecher nach Fig. 6 fünf Brechwalzen 1, 2, 2' mit zwei Arbeitsspalten A und einem randseitigen Arbeitsspalt A'. Bei dieser Zick-Zack-Anordnung kann sich das Material oberhalb der fünf Brechwalzen relativ einfach gleichmäßig verteilen. Die Kaskaden bzw. Stufenanordnung der sechs Walzen nach Fig. 7 bietet insbesondere die Möglichkeit der gleichmäßigen Verteilung auf die drei Arbeitsspalte A bei etwas seitlicher Aufgabe, wobei auf eine Bearbeitung an den Wänden 12, 13 verzichtet wird.In continuation of the inventive idea of the multi-roll crusher after Fig. 6 five crushing rollers 1, 2, 2 'with two working gaps A and a marginal working gap A'. In this zig-zag arrangement, the material above the five crushing rollers can relatively evenly distribute. The cascades or step arrangement of the six rollers after Fig. 7 In particular, offers the possibility of even distribution to the three working column A at some lateral task, with a processing on the walls 12, 13 is omitted.

Bei den Figuren 8 bis 13 sind jeweils acht Brechwalzen in einem Brecherraum dargestellt, wobei drei mittlere Arbeitsspalte A und jeweils zusätzlich ein Arbeitsspalt A' an den Wänden 12, 13 vorhanden sind. Die Aufgaberichtung des Materials von oben und der weitere Transport nach dem Brechvorgang ist in diesen Figuren jeweils durch gestrichelte Pfeile angedeutet.Both FIGS. 8 to 13 In each case eight crushing rollers are shown in a crusher space, with three middle working gaps A and in each case additionally a working gap A 'on the walls 12, 13 are present. The task direction of the material from above and the further transport after the breaking process is indicated in these figures by dashed arrows.

Nach den Figuren 9 bis 13 sind jeweils zwei benachbarte Brechwalzen, die zwischen sich einen Leerspalt L besitzen, über eine Wippe 11 zu einer Baueinheit zusammengefasst. Die Wippe 11 beinhaltet vorzugsweise rechts und links außerhalb des Gehäuses angeordnete und gelagerte Walzenträger 11, 11". Die Rotationsachsen R der zugehörigen Brechwalzen sind durch nicht dargestellte Schlitze des Gehäuses geführt. In der Grundposition liegt die Wippe 11 an einem vorzugsweise verstellbaren Anschlag 17 an und wird gegen diesen Anschlag von der vorgespannten Feder 16 gedrückt. Diese federnde Lagerung der Baueinheit hat den Vorteil, dass bei Anfall von zu harten oder nicht brechbaren Materialien die Wippe um die Drehachse 15 gegen die Feder 16 bewegt wird, sodass sich die beiden zugehörigen Arbeitsspalte A, A' gleichzeitig um im Wesentlichen dasselbe Maß automatisch öffnen können. Sobald das Hindernis beseitig ist, wird mit Hilfe der Feder 16 die Wippe 11 in die Ausgangsposition zurückgeschwenkt.After the FIGS. 9 to 13 are each two adjacent crushing rollers, which have an empty gap L between them, summarized by a rocker 11 to form a structural unit. The rocker 11 preferably contains and supports roller carriers 11, 11 "arranged and mounted on the outside of the housing on the right and on the left .. The rotation axes R of the associated crushing rollers are guided through slots in the housing (not shown) is pressed against this stop by the prestressed spring 16. This resilient mounting of the assembly has the advantage that when seizure of too hard or non-breakable materials, the rocker is moved about the axis of rotation 15 against the spring 16, so that the two associated working gaps A, A 'at the same time by essentially the same extent can open automatically. Once the obstacle is eliminated, the rocker 11 is pivoted back to the starting position by means of the spring 16.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

1, 1'1, 1 '
Brechwalze (rechts drehend)Crushing roller (turning right)
2, 2'2, 2 '
Brechwalze (links drehend)Crushing roller (turning left)
33
Ambossleisteanvil strip
44
Brech- oder Schneidzähne an 1, 2, 1', 2' (vgl. Fig. 8 bis 13)Breaking or cutting teeth on 1, 2, 1 ', 2' (see. Fig. 8 to 13 )
55
Schneidelement an der Spitze von 3 (vgl. Fig. 7)Cutting element at the top of 3 (see. Fig. 7 )
66
Schneidelement im oberen Bereich seitlich an 3 (vgl. Fig. 7)Cutting element in the upper area laterally at 3 (see. Fig. 7 )
77
Schneidleiste an 3 (vgl. Fig. 7 und Fig. 5)Cutting bar at 3 (see. Fig. 7 and Fig. 5 )
88th
Feder für 3 (vgl. Fig. 7)Spring for 3 (cf. Fig. 7 )
99
Zahnlücken in 10 (vgl. Fig. 5)Tooth gaps in 10 (see. Fig. 5 )
1010
Leiste (vgl. Fig. 5)Strip (cf. Fig. 5 )
1111
Wippe (vgl. Fig. 9 bis 13)Rocker (cf. Fig. 9 to 13 )
11', 11"11 ', 11 "
Walzenträgerroll carriers
1212
Wandwall
1313
Wandwall
1414
Äußere Brechzähne an 12, 13External crushing teeth at 12, 13
1515
Drehachse von 11Rotation axis of 11
1616
Feder an 11Spring on 11
1717
Anschlag (verstellbar)Stop (adjustable)
A, A'A, A '
Arbeitsspaltworking gap
BB
Gesamtbreite des BrecherraumesTotal width of the breaker room
L, L'L, L '
Leerspaltempty gap
RR
Rotationsachse von 1, 1', 2, 2'Rotation axis of 1, 1 ', 2, 2'
VV
Verbindungslinie zwischen Rotationsachsen RConnecting line between axes of rotation R
a, a'a, a '
Spaltweite von A, A' in Richtung von VGap width of A, A 'in the direction of V
I, I'I, I '
Spaltweite von L, L' in Richtung von VGap width of L, L 'in the direction of V
αα
Winkel von V zur Horizontalen im Bereich von AAngle from V to the horizontal in the range of A
ββ
Winkel von V zur Horizontalen im Bereich von LAngle from V to the horizontal in the range of L

Claims (19)

  1. Multiroller crusher for crushing mineral material to be crushed, such as in particular coal or oil sand, in a single crushing step, having at least three crushing rollers (1, 2, 1', 2'), wherein crushing or cutting teeth (4) are disposed on the periphery of the crushing rollers (1, 2, 1', 2') and the axes of rotation (R) of the crushing rollers lie in parallel with each other and horizontally or approximately horizontally, characterised in that all immediately adjacent crushing rollers (1, 2, 1', 2') have opposing directions of rotation, the connecting line (V) of the axes of rotation (R) has at least one kink, and over the entire width of the crushing space a working gap (A) and an empty gap (L) alternate owing to the alternating directions of rotation of the crushing rollers (1, 2, 1', 2').
  2. Multiroller crusher as claimed in claim 1, characterised in that below the working gap (A) formed between two crushing rollers (1, 2) is disposed an anvil strip (3) extending over the whole length of the crushing rollers (1, 2).
  3. Multiroller crusher as claimed in claim 2, characterised in that crushing or cutting elements (5, 6, 7) are disposed on the tip and/or laterally in the upper region of the anvil strip (3) and cooperate with the crushing or cutting teeth (4) disposed on the periphery of the crushing rollers (1, 2).
  4. Multiroller crusher as claimed in claim 3, characterised in that the crushing or cutting elements (5, 6, 7) are disposed on the anvil strip (3) on replaceable, wholly or partially straight or comb-like strips (10).
  5. Multiroller crusher as claimed in claim 2, characterised in that the anvil strip (3) is mounted in a height-adjustable and/or resilient manner.
  6. Multiroller crusher as claimed in claim 1, characterised in that one or both outer crushing rollers (1', 2') cooperate with anvil strips or crushing teeth (14) which are mounted on the adjoining walls (12, 13) in a fixed, displaceable and/or resilient manner.
  7. Multiroller crusher as claimed in claim 1, characterised in that the connecting line (V) extends in the region of a working gap (A) at an angle α of up to 30° with respect to the horizontal.
  8. Multiroller crusher as claimed in claim 1, characterised in that the connecting line (V) extends in the region of an empty gap (L) at an angle β of up to 90° with respect to the horizontal.
  9. Multiroller crusher as claimed in claim 1, characterised in that the connecting line (V) extends in the region of an empty gap (L) at an angle β of up to 75° with respect to the horizontal.
  10. Multiroller crusher as claimed in claim 8, characterised in that the angle β is 30 to 60°.
  11. Multiroller crusher as claimed in claim 8 or 9, characterised in that the angle α is smaller than or equal to the angle β.
  12. Multiroller crusher as claimed in claim 1, characterised in that the crushing or cutting teeth (4) cooperating at a working gap (A) are disposed offset with respect to each other in the peripheral direction and/or in the axial direction of the crushing rollers (1, 2, 1', 2').
  13. Multiroller crusher as claimed in claim 1, characterised in that the crushing rollers (1, 2, 1', 2') consist of toothed discs lined up axially.
  14. Multiroller crusher as claimed in claim 1, characterised in that the length (1) of the connecting line (V) at an empty gap (L) is smaller than or equal to the length (a) of the connecting line (V) at a working gap (A).
  15. Multiroller crusher as claimed in claim 1, characterised in that in each case two crushing rollers (1, 2, 1', 2'), which form an empty gap (L) therebetween, are disposed as a construction unit on a rocker (11) which is mounted on the housing of the multiroller crusher in a pivoting and/or displaceable manner.
  16. Multiroller crusher as claimed in claim 15, characterised in that the rocker (11) can pivot about an axis of rotation (15) disposed in parallel with the axes of rotation (R) of the crushing rollers (1, 2, 1', 2').
  17. Multiroller crusher as claimed in claim 15 or 16, characterised in that the pivotability of the rocker (11) is limited by an adjustable stop (17).
  18. Multiroller crusher as claimed in claim 16, characterised in that a spring (16) acts on the rocker (11) in the direction of the stop (17).
  19. Multiroller crusher as claimed in claim 1, characterised in that the crushing rollers (1, 2, 1', 2') have the same or different diameters.
EP07700215A 2006-02-03 2007-01-11 Multiroller crusher Active EP1984115B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006005017A DE102006005017B3 (en) 2006-02-03 2006-02-03 More roll crusher
PCT/EP2007/000188 WO2007090495A2 (en) 2006-02-03 2007-01-11 Multiroller crusher

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DE102011000019A1 (en) 2011-01-03 2012-07-05 ThyssenKrupp Fördertechnik GmbH Mobile crushing plant
DE102011000018A1 (en) 2011-01-03 2012-07-05 ThyssenKrupp Fördertechnik GmbH More roll crusher
WO2012092952A1 (en) 2011-01-03 2012-07-12 ThyssenKrupp Fördertechnik GmbH Mobile crushing unit
WO2012092951A1 (en) 2011-01-03 2012-07-12 ThyssenKrupp Fördertechnik GmbH Multiple roll crusher

Also Published As

Publication number Publication date
WO2007090495A3 (en) 2007-12-13
DE102006005017B3 (en) 2007-10-18
AU2007214087B2 (en) 2011-06-02
CN101370590A (en) 2009-02-18
ATE487540T1 (en) 2010-11-15
AU2007214087A1 (en) 2007-08-16
WO2007090495A2 (en) 2007-08-16
ES2354736T3 (en) 2011-03-17
DE502007005611D1 (en) 2010-12-23
US20090020637A1 (en) 2009-01-22
US7997516B2 (en) 2011-08-16
EP1984115A2 (en) 2008-10-29
CN101370590B (en) 2011-04-13

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