Extrusion assisting device

Abstract

The invention discloses an extrusion assisting device, namely an inclined screen device, and belongs to the field of screw compressed propulsive agent preparation. The extrusion assisting device is installed between chemical heat preservation and conveying equipment in the screw compressed propulsive agent preparation process. When chemicals pass through the inclined screen device, the chemicals on the screen enter a screw compressor through a conveying system, and chemical slags, chemical scraps and chemical powder below the screen enter a slag collecting bag through a slag groove. By the adoption of the device, the manual screening procedure is replaced. The device has the characteristics of being simple and practical in structure, free of power and capable of achieving continuous automation, automatic chemical screening is achieved, the problem of manual screening is solved, and the safety is improved; the uniformity of the chemicals is guaranteed; the inner surface quality and the outer surface quality of chemical columns of the screw compressed propulsive agent are improved, and accordingly the qualified rate of finished products is increased. The extrusion assisting device is applied to the extrusion forming process of the screw compressed propulsive agent products and can be popularized in the industry.

Description

technical field [0001] The invention mainly relates to a compression-stretching process auxiliary device, which belongs to the field of screw press propellant manufacturing. Background technique [0002] The screw press propellant manufacturing process mainly includes processes such as weighing, absorption, centrifugal water displacement, mixing, calendering, drug screening, drying, compression stretching, cutting drug, drying drug shaping and so on. Process control is particularly critical, which directly affects the quality and performance of the formed grain (burning rate, burning rate pressure index, ballistic performance), etc. [0003] The screw press propellant trial production line is an intermittent and semi-automatic production line. Due to the low degree of automation of the production line, the labor intensity is high, the poison is large, and the safety is poor. Especially in the sieving process, the drug powder, drug powder and small drug residues in the drug ...

AI Technical Summary

Problems solved by technology

Since the sieving process is a manual operation, people are in direct contact with the medicinal material, and the toxicity of the medicinal material will directly cause harm to the human body; manual operation is labor-intensive, and tens of kilograms to several tons of medicinal materials have to go through the manual sieving process. The work efficiency is low; operators use metal sieves to sieve the medicinal materials, the medicinal powders fly everywhere, and the friction between the medicinal particles tends to generate static electricity, which is very poor in safety.

In addition, even if the modified double-base propellant has passed the sieving process, during the compression-stretching manufacturing process, through the heat preservation, feeding, and transportation processes, it is easy to drop powder and powder, which directly affects the quality of the compression-stretching powder column.

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