JPS609866B2 - Multi-purpose impact crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a material charging section disposed on the ascending side of a rotor rotating around a horizontal axis, and a material charging section disposed above the rotor so as to be pivotable, and the lower end of its collision surface A first collision member reaching close to the rotor impact circle; and a second collision member or grinding member arranged behind the first collision member as viewed in the rotational direction of the rotor, the second collision member This invention relates to an impact crusher in which the lower end of the collision surface or grinding surface of the rotor reaches close to the rotor impact circle on the descending side of the rotor.

Various types of such impact crushers or impact crushers are well known (see German Patent No. 929,527 and German Publication No. 1,272,688) and are used for crushing various materials.

Instead of two or more collision members arranged in front and behind each other, one collision member is provided, and this collision member forms a partition wall of a relatively large collision space at the rear in the rotational direction of the rotor, It has been found to be advantageous for many purposes to surround the rotor up to its descending side (see DE 233 172 Y).

In practice, it often happens that different materials have to be crushed in the same impact crusher.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to create an impact crusher or impact crusher whose impact members can be adjusted in a simple manner to be suitable for the crushing of various materials. This is achieved according to the invention in the following manner in an impact crusher of the type mentioned at the outset. That is, the first impact member is pivoted into a position where its lower end abuts or is close to the second impact member, such that the impact surface of the second impact member forms an extension of the impact surface of the first impact member. possible and fixable in this position. Further, in the present invention, the pivot axis of the first collision member is arranged above the rotor by at least about twice the diameter of the rotor striking circle.
Thereby, the angle through which the first impact member pivots from its one operating position to the other during adjustment is relatively small, and the impact surface of the first impact member in both positions is favorable relative to the impact direction of the crushed material. In this case, the first collision member consists of a curved upper portion of the collision surface and a flat lower portion of the collision surface, and the lower portion of the collision surface is longer than the upper portion of the collision surface. It is advantageous for the first collision member to be located in a plane that intersects a horizontal plane passing through the pivot axis on the opposite side of the charging side of the casing with respect to the pivot axis and at a distance from the pivot axis.

This results in the characteristic that the space between the charging slide and the first impact member is larger, especially in the upper part, and that the opposing forces for catching the material thrown up by the rotor and hitting the impact member are greater. Embodiments of the invention will be described below with reference to the accompanying drawings. In the figure, a rotor 2 is rotatably mounted within the casing by a horizontal shaft 3, and the direction of rotation is indicated by an arrow 4.

A striking element 5 is attached to the outer periphery of the rotor, the outer edge of which defines a striking circle 6 when the rotor rotates. On the side of the rotor, along which the striker moves upwards, there is a casing charging port 8, secured by a chain curtain 7, to which a charging channel 9 connects. A charging runway 9 is provided in the upper quadrant of the ascending side of the rotor. Above the rotor 2, a first collision part village 10 whose collision surface is numbered 11 is located at a rotation axis 12.
is installed on. The first impact member 10 is held in the desired operating position by a support shaft 13 and can pivot outwardly when struck by large particles of material that cannot be crushed. The collision surface 11 of the first collision member 10 consists of a flat lower part 11a and a curved upper part 11b, the lower part is longer than the upper part, and the extension surface of the lower part is opposite the oblique side of the casing. The pivot shaft 2 of the first collision member 10 intersects a horizontal plane passing through the pivot axis of the first collision member 10 at a distance from the pivot axis. It is located above the rotor 2 by about twice as much.Thereby, the operating position 1, which will be described later, of the first collision member 10,
The angle of swivel between D is relatively small, so that the impact surface 1 of the first impact member has a favorable angular position with respect to the direction of impact of the crushed material particles in both operating positions. The lower part 11a and the upper part 11b are bent like the collision surface of the present invention.
If and are formed, the above convenient angular position is
As mentioned above, the lower part 11a of the collision surface is the upper part 11b.
and the lower portion 11a is longer than the lower portion 11a.
This is further improved by intersecting the horizontal plane passing through the rotation axis 12 in the direction opposite to the charging side of the casing at a distance from the rotation axis (intersection S). A second collision member 14 whose collision surface is marked with 15 is attached to a pivot shaft 161. This second collision member is also held in its operating position by the support i7, and in this position the lower end of the collision surface 15 reaches close to the striking circle 6 on the descending side of the rotor 2.This collision member also When hit by large grains of material that cannot be crushed,
Turn outward. The first collision member 1 and 13 can be brought into two different operating positions.

At the dashed line position marked with 1, the collision surface 1 of the first collision member
1 is close to the striking circle 6 in the top region thereof.

At the solid line position marked D, the lower end of the collision surface 11 is at the second
It is located near the upper end of the collision surface 15 of the collision member 14 or rests against this collision surface. The impingement surface 15 therefore forms a continuous extension of the impingement surface 11, and in any case a large part of the impingement surface 15 is not covered by the first impingement member 1. Since the lower end of the impact surface 11 of the first impact member has a relatively larger spacing than the rotor striking circle 6 in its operating position, it is not necessary to be able to pivot further outwards from this position; However, in the illustrated embodiment, the second
When the collision member 14 performs a pivoting motion, there is a possibility that the first collision member will pivot.

[Brief explanation of the drawing]

The figure is a vertical sectional view of an impact crusher according to the invention.

Claims (1)

[Scope of Claims] 1. A material charging section disposed on the ascending side of a rotor rotating around a horizontal axis, and a material charging section disposed above the rotor so as to be able to rotate, and the lower end of its collision surface is located within the rotor striking circle. a first collision member that reaches close to the first collision member, and a second collision member or grinding member that is arranged behind the first collision member when viewed in the rotational direction of the rotor, the collision surface of the second member or In a collision-type crusher in which the lower end of the grinding surface reaches close to the rotor impact circle on the descending side of the rotor, the first collision member is capable of pivoting to the following position, and in this position: be securable, i.e. in the same position the first impact member abuts or is located close to the second impact member, such that the impact surface of the second impact member is an extension of the impact surface of the first impact member; 1. An impact crusher characterized in that the rotation axis of the first collision member is arranged in the direction of the rotor by at least about twice the diameter of the rotor striking circle. 2. The upper part of the collision surface that the first collision member curves and the flattened part form the lower part of the collision surface, and the lower part of the collision surface is longer than the upper part of the collision surface and passes through the pivot axis of the first collision member. The impact type crusher according to claim 1, wherein the impact crusher is located in a plane that intersects the horizontal plane on the opposite side of the charging side of the casing with respect to the rotation axis and at a distance from the rotation axis.