Vertical dry-cutting water-cooling plastic granulator

Abstract

The invention discloses a vertical dry-cutting water-cooled plastic granulator. A granulation chamber (9) is arranged under the machine head (1). 8); the upper part of the cutting chamber (9) is a sandwich cylinder, and the annular wall interlayer (12) has two closed end faces up and down and has a water inlet pipe (11), in which the inner wall (13) Several water spray slits (14) are evenly distributed on the top, and these water spray slits (14) are all arranged longitudinally along the inner cylinder wall (13), that is, they have a direction parallel to the central axis (7) of the machine head. They are at the same height position. The particles leaving the cutter change their trajectory under the action of the water belt, avoiding premature contact with the inner cylinder wall and adhesion. At the same time, the particles leaving the cutter have a longer movement route before being discharged from the particle outlet, and the cooling effect is better. The dry cutting operation of the material is realized, the particle shape is uniform, the stability is good, and the output is improved.

Description

technical field [0001] The invention relates to a special equipment for granulation, in particular to a vertical dry-cut plastic granulator with a water cooling system. It is suitable for hot-cut water-cooled granulation in extrusion granulation production lines of plastics, grafted PP glue, PE glue, EVA hot-melt glue, etc. Background technique [0002] In the current hot-cut water-cooled granulator production line, there are underwater granulation, water ring granulation, hob wipe surface granulation, and water cooling on the machine head. Since these practices all belong to wet cutting methods, their main disadvantages are poor stability, uneven particle size, and unsatisfactory output per unit time. [0003] The Chinese invention patent application with the patent application number 200610098975.8 discloses a "vertical plastic hot cutting water ring cooling device". The U.S. Patent No. US4663099A also discloses an extrusion granulation device. Both of the above two gra...

AI Technical Summary

Problems solved by technology

However, in the cooling mechanisms of these two devices, no matter whether there is pressure or not, the flow direction of the water used to cool the particles and the movement direction of the particles leaving the cutter are basically perpendicular to each other, and the problems caused are mainly manifested in the following two Aspects: First, the particles that have just left the cutter run at a high speed, and it is easy to pass through the water curtain and stick to the wall of the granulation chamber and is not easy to remove

Second, the temperature of the particles leaving the cutter is high, and they are discharged from the pelletizing chamber within a short time after contacting the cooling water. The cooling time is short, cold and the effect is not satisfactory, and the stability of the equipment and the uniformity of the particles are also poor. not good enough

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