SU483268A1 - A device for granulating polymeric materials - Google Patents

Description

one

The invention relates to machines for the non-processing of polymer materials, in particular to a device for granulating.

A device for granulating non-polymer materials is known, which contains a worm in the case with mounted spring loaded long blades connected to the front end of the worm and a granulation chamber freely mounted and fixed against the perforated disk. A disadvantage of the known device is the low cooling efficiency of the cutting granules and the low rate of their discharge from the granulating chamber.

The purpose of the invention is to increase the cooling efficiency of the granules. This objective is achieved in that the device on the blade blade side is provided with a distribution manifold located concentrically with respect to the perforated disk and communicating with the granulation chamber through radial holes. At the same time, the radial holes in the upper part of the distribution manifold are made larger in diameter than their diameter in the lower part of the collector, which increases the rate of ablation of the granules.

FIG. 1 is a diagram of a cutting assembly of a device with a granulation chamber; in fig. 2 is a section along the line A-A in FIG. 1 (distribution reservoir).

The device contains a worm-to-2 dislocated in the housing 1 with the blade-mounted knives 4 mounted by the springs fixed by the springs 3; The tornado 5, which is connected with the front end of the worm, extends tornado 5, which forms a narrowing gap 7 with the head 6. The gap 7 depends on the properties of the granulated polymer material depending on the properties of the granulated polymer material 8.

On the torpedo 5, a perforated disk 9 fitted with a ring-shaped hole 10, which includes an upset of the 1 cuff 11 and an integrated cuff 11 and mounted

In it, the end face 12 of a distribution manifold 13 communicating with the granulation chamber 14 by means of radial holes 15 and 16. The radial holes 15 in the upper part of the distribution manifold 13 have a larger diameter compared to the diameter of the holes 16 spaced in the lower part of the collector. The refrigerant is supplied to the distribution manifold 13

with the help of choke 17, and the removal of the cut granules - with the help of the outlet nozzle 18.

A device for granulating polymeric materials works as follows.

The polymer material loaded into the housing 1 is captured by the screw 2 and moves to the head 6. In the channels of the screw the polymer heats up, melts, pre-plasticizes, evacuates and moves, if necessary, into a narrowing slot 7 in which it is subjected to an intense shear load, as a result, it is finally plastered. Further, the polymer melt is extruded through the holes of the perforated disk 9 in the form of bundles. The extruded strands are cut into granules by rotating bladed blades 4. The granules cut in granulation chamber 14 are intensively cooled by jets of refrigerant coming from the distribution manifold 13 and carrying the granule through the discharge nozzle 18.

Subject invention

Claims (2)

1. A device for granulating polymeric materials containing a worm placed in the body with spring-loaded blade blades mounted on it, connected to the front end of a worm, smoothly extending torpedo, on which a perforated disk is freely mounted and fixed from turning, and a granulating chamber, characterized by the fact that, in order to increase the cooling effect of the granules, the device on the blade blade side is provided with a distribution manifold located concentrically with respect to the perforated disk and communicating with the pelletizing chamber through radial holes. 2. The device according to claim 1, characterized in that, in order to increase the rate of ablation granules, radial holes in the upper part of the distribution collector are made larger in diameter than their diameter in the lower part of the collector. A; jT i2, „o 6 W fftus 1 5 ,,