JPS6018217B2 - Equipment for crushing solids - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an apparatus for crushing solid materials, particularly competitive materials, which comprises a horizontal rotating shaft, a plurality of crushing arms disposed on the shaft, and a grid body cooperating with the crushing arms. Regarding the format of

In such crushing devices, the grid usually consists of horizontally or diagonally arranged twill grids.

In this case, the grid bars are arranged at such a distance that the crushing arm can pass between each adjacent grid bar. If the grid bars are arranged in this way, certain areas of the grid bars are subjected to particularly high loads during the crushing process. This load occurs more frequently than on individual crushing arms, depending on the number of crushing arms arranged in one vertical plane. This phenomenon is particularly noticeable in crushing equipment that crushes hot condensed material coming from competing equipment.
That is, in this case the aforementioned grid body portions are constantly exposed to strong thermal effects. As a result of these particularly high loads, the grid bars are subject to relatively high wear and have to be replaced at certain intervals. However, replacing the grid bars not only requires a large amount of material and expense, but also requires a shutdown of the equipment, which in turn has a negative impact on the economics of the entire equipment. The object of the invention is therefore to improve a crushing device of the type mentioned at the outset in such a way that the service life of the grid is significantly increased.

This object is achieved according to the invention in that the grid body consists of grid plates fixed on a common horizontal axis.

It is possible to provide the grid plates with different shapes, the spacing of which corresponds to the spacing of the grid bars.

For example, the grid plate can also be formed circularly. In this case, the grid plate is moved in the direction of rotation opposite to the crushing arm by the material to be crushed, which is moved by the crushing arm. However, it is also possible for the shafts of the grid plates forming the grid to be connected to a drive for the crushing shaft or to be driven by a separate drive. Due to the rotation of the circular grid plate, different parts of the circumference of the grid plate are subject to mechanical and thermal loads.

However, since the outer periphery of each grid plate is several times as long as the locally loaded area, the service life of a grid constructed in this way is correspondingly very long. In order to further increase the durability of the grid, it is necessary to add a cooling medium,
Advantageously, water cooling is provided. Furthermore, in one embodiment of the present invention, the grid plate may be formed into a polygonal shape.

In this case, the grid plate is stationary during operation, and one horizontally or obliquely extending upper side of the grid plate takes the place of a conventional grid bar. In this embodiment, the upper sides of the lattice plate must all extend parallel to each other, as in the case of a conventional birch lattice. For example, if a wear phenomenon occurs on one of the upper sides of the grid plate, by rotating the shaft, the grid plate can be rotated until the unused side of the grid plate is brought into use position. This process does not require any special expense and can be carried out in an extremely short time. Therefore, even if the lattice plate is configured in a polygonal shape, the durability can be several times longer than that of the conventional one. Furthermore, in order to feed the material to be shredded and to absorb the impact forces of the shredded material discharged from the dovetailing device, it is advantageous to provide an inclined feeding table in front of the shredding device.

The invention will now be explained with reference to the drawings: In FIGS. 1 and 2, the supply table, which is arranged strongly obliquely, is designated by the reference numeral 1. FIG.

Onto this supply table 1, for example, a condensation material discharged from a consolidating device is dropped. A crushing device is provided in the region of the lower end of the supply table. This crushing device has on the one hand a horizontal crushing shaft 2 and a crushing arm 3 fixed thereto. In the illustrated embodiment, three crushing arms are provided in each vertical plane. The crushing shaft with the crushing arm removed is rotated in the direction of arrow A. These breaking arms cooperate with a special breaking grid constructed according to the invention.

This crushing grid consists of rattan 4, also horizontally arranged, to which circular grid plates 5 are fixed. In this case, the arrangement and construction of the grid plates is such that the crushing arm can in each case pass between two grid plates. As already described, the rotating shaft 4 and the grid plate 5 are rotated in the opposite direction to the crushing arm (arrow B). In order to cool the grid plate 5, water-spraying nozzles 6 are used which are located outside the working area of the crushing device. FIG. 3 shows a grid body in which a polygonal grid plate 7 is fixed to a shaft 4. As shown in FIG.

The sloped sides 8 of the upper region of the grid plate form a grid surface which acts in the same way as the known birch grid. If a wear phenomenon occurs on the oblique side 8 after a certain amount of operating time, the shaft 4
is rotated together with the grid plate 7 until, for example, the side 9 is raised to the operating position.

[Brief explanation of the drawing]

The drawings show several embodiments of the invention, the first
Figure 2 is a side view of the device of the invention with circular grid plates;
The figure is a partial plan view of the device of FIG. 1, and FIG. 3 is a side view of the device of the invention with polygonal grid plates. 1... Supply table table, 2... Crushing shaft, 3... Crushing arm, 4... Shaft, 5...
...Grid plate, 6...Nozzle, 7...
Lattice plate, 8, 9...One side of the lattice plate. Fig. IFi9.2Fi9.3

Claims (1)

[Scope of Claims] 1. A device for crushing solid materials, which is composed of a horizontal rotating shaft, a plurality of crushing arms disposed on the shaft, and a lattice body that cooperates with the crushing arms. , a device for crushing solid materials, characterized in that the grid body consists of grid plates 5, 7 fixed to a common rotatable shaft 4. 2. The apparatus for crushing solid materials according to claim 1, wherein the grid plate 5 is formed in a circular shape. 3. The method according to claim 2, wherein the grid plate 5 is cooled with a cooling medium before or after passing through the crushing zone.
Equipment for crushing solid materials. 4. The device for crushing solid materials according to claim 1, wherein the grid plate 7 is formed in a polygonal shape. 5. The crushing device according to claim 1, wherein the crushing device is provided with a supply table 1 arranged obliquely.
Equipment for crushing solid materials.