Manufacturing method of industry and mining drum screen with high wear resistance and high screening rate

Abstract

The invention discloses a manufacturing method of an industry and mining drum screen with high wear resistance and high screening rate. The manufacturing method comprises the steps of firstly, prefabricating a screen plane forming die, spraying a release agent in the inner cavity of the forming die, and paving the forming die with twisted steel; then, preparing a polyurethane elastomer, preheating the forming die to 100-120 DEG C, pouring the polyurethane elastomer into the forming die, and demolding after gelling to form a planar screen; curling the planar screen and heating to 100-120 DEG C, and smearing the polyurethane elastomer to an abutted surface of the drum screen to reinforce and bond at the temperature; and then, vulcanizing the drum screen at the temperature of 100-120 DEG C, and preserving the heat for 16-24h to obtain a product. The industry and mining drum screen with high wear resistance and high screening rate is integrally molded, the traditional rubber punched screen plates, the rubber molded outlet type screen plates and the traditional pourable polyurethane screen plates are effectively avoided, so that the problem of screening rate reduction caused by manufacturing the traditional screen part by part is avoided.

Description

technical field [0001] The invention relates to a method for preparing an industrial and mining cylindrical sieve with high wear resistance and high screening rate. Background technique [0002] The working part of the industrial and mining cylinder screen is cylindrical, and the whole screen rotates around the axis of the cylinder. The material is fed from one end of the cylinder, and the fine-grade material smaller than the minimum size of the screen hole passes through the screen hole on the cylindrical working surface, and the material is larger than the screen hole. Coarse grade material of the smallest size is discharged from the other end of the cylinder. [0003] Generally, the screen mesh of industrial and mining cylinder screens generally has the following types: steel plate punching type (usually steel plate is thinner), stainless steel steel bar welding type, flat steel strip welding type, rubber plate punching type, rubber molded hole type , Cast polyurethane s...

AI Technical Summary

Problems solved by technology

[0004] At present, the above-mentioned screens are limited by the selection of materials, and the wear resistance is not good enough, such as steel plate punching type, stainless steel rod welding type, flat steel strip welding type screen mesh, in addition, rigid materials have no elasticity and yield, and materials are easy to block the screen or limited by the manufacturing process, in order to ensure the strength of the screen, the sieve plate ribs are wider, and the entire connection of the bolts or the bead that fixes the sieve plate is a blind hole, and the opening rate is not high (usually Less than 30%), the screening efficiency is low and the effect is not good enough, such as rubber plate punching type, rubber molded hole type, traditional cast polyurethane screen sub-assembly cylindrical screen