SU369924A1 - ROLL CRUSHER FOR CRUSHING SOFT - Google Patents

Description

one

The invention relates to the processing of plastics and can be used to grind soft plastics such as polyethylene, paraffin, stearin and the like.

Roll crushers are known, including a casing in which rotating shafts with sprockets are placed on them, and under them are shafts with discs fixed on them, and a grille in the lower part of the casing.

However, in known roller crushers during operation, the crushed material sticks to the hull and other working surfaces, which reduces productivity. In addition, the plastic does not have the same particle size when it leaves the crusher, which is reflected in the quality of the processed material.

The purpose of the invention is to increase productivity and ensure uniformity of grinding material.

This is achieved by the fact that behind the rollers with disks in the course of crushing a granulator is mounted, made in the form of hollow rollers with bristles, between the protrusions of which through holes are made, and there are screws inside the grills and under the grate. To improve the material passage surface

the disks are serrated, and the lattice is convex toward the rolls of the granulator. FIG. 1 schematically shows the proposed roll crusher, vertical

incision; in fig. 2 is a section along L-A in FIG. one;

in fig. 3 is a section along BB in FIG. one; on

FIG. 4 is a section along bb in FIG. one; in fig. five-

the shape of the teeth of the disk surface.

K orpus roller crusher consists of two

parts: lower / upper 2 over which hopper 3 is installed for loading material. Under the bunker 3, a pair of rolls 4 and 5 are installed with stars 6 and 7 arranged on them in a checkerboard pattern, where each protrusion

the sprockets 6 of the roll 4 overlap the depression with the opposite sprockets 7 of the roll 5. Under the rolls 4 and 5 there are rolls 8 and 9 with disks 10 and 11, the blades of which are made toothed, and between the disks there is space for the passage of crushed material. Under rollers 8 and 9, along the course of the material being crushed, a granulator is mounted, which is made in the air of the hollow rolls 12 and 13 with milled into

these are brush-shaped 14 and 15, between the protrusions of which holes 16 are provided to obtain granules of a certain size. Inside the hollow rolls 12 and 13, screws 17 are installed to cut the pellets, and the grill 18 itself is located under the shafts 14 and 15 in

3 -

the pressure zone created by the displacement of material from the pits of the teeth of the rolls 12 and 13.

The material to be crushed and granulated is continuously fed into the hopper 3, captured with asterisks 6 and 7, crushed, and the resulting pieces fall down from the disks 10 and 11 for fine grinding.

The crushed material falls between the disks 10 and 11 to the gears 14 and 15, which transfer the material around the outer circle from the feed zone to the pressure zone, which is evenly distributed to all the holes in the rolls 12 and 13 and the grille 18. As the material pushes through the grid 18, it is compacted and continuously fed to the screws. Part of the material is captured by gears 14 ii 15 and then pushed through holes 16 into the inside of the rolls 12 and 13. The extruded material through holes 16 and the grate 18 is cut by a screw 17 and the resulting granules of a certain shape are transported to the container. A comb 19 is provided to remove material from disks 10 vi 11.

/ 7

four

Subject invention

Claims (3)

1. Roll crusher for crushing soft plastics, comprising a body in which shafts with asterisks are installed, and shafts with discs mounted on them are mounted under them, and a grating in the lower part of the housing, characterized in that, in order to increase productivity and ensure uniform crushing, a granulator is mounted behind the rollers with discs during crushing in the form of hollow rolls with gears, between the protrusions of which are made through holes, and inside the rolls and under the grill mounted shneki. 2. Roller crusher according to claim 1, characterized in that, in order to ensure a uniform dosage of the crushed material on the rolls of the granulator, the lateral surface of the disks is made gear. 3. Roll crusher according to claim 1, characterized in that the grate is made convex toward the rolls of the granulator. 7 of FIG. 4Fig. S .S