Grain cutting cover for extruder

Abstract

The invention discloses a grain cutting cover for an extruder, comprising a circular cover body. The grain cutting cover is characterized in that the bottom of the circular cover body is provided with an air inlet channel and an air outlet channel; the circle center of one side wall of the circular cover body is provided with a circular hole adaptive to the head of the extruder, the circle center of the other side wall of the circular cover body is fixed with a motor, the main shaft of the motor penetrates through the circular cover body to connect with the grain cutter arranged on the head of the extruder, and the grain cutting cover is sleeved on the head through the circular hole; and the cover body is also provided with a window capable of observing the granulation condition in the circular cover body. The grain cutting cover for the extruder can facilitate workers to maintain the head of a granulator and clean the interior of the cover body through providing a turnover detachable cap in the cover body, and has the advantages of simple structure, reliable performance, convenient use, time and effort saving, easy air drying and easy operation, thus improving productivity effect.

Description

technical field [0001] The invention relates to a pelletizing hood, in particular to a counter blowing pelletizing hood used in the head part of an extruder. Background technique [0002] In pelletizing production, generally according to the type of polymer to be processed and the shape of the product or semi-finished product, select the extruder, head and die, as well as the corresponding auxiliary devices such as shaping and traction, and then determine the extrusion process conditions such as Screw speed, head pressure, material temperature, setting temperature, traction speed, etc. In the extrusion process, after the polymer is mixed with various additives, it is fed into the extruder to be melted, and further mixed evenly, passing through a multi-hole die to form multiple strips, and then cut into pellets. Cutting can be divided into hot dicing and cold dicing. After the former strip leaves the die, it is cooled with air or water and cut off with a rotary knife immedi...

AI Technical Summary

Problems solved by technology

However, the existing granulation hood is only a circular hood covering the machine head, and one port is connected to a blower to blow the granulated material into the silo. During the granulation process, it is difficult for the operator to observe the die of the machine head. The granulation and granulation conditions are not convenient for the operator to operate, and when the granulation is completed, the remaining materials in the granulation hood are cleaned, or when the machine head needs to be repaired, the operator needs to remove the granulation hood for maintenance. Its operation is complex, time-consuming and labor-intensive, which reduces production efficiency

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