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

An industrial and mining cylindrical screen, high wear resistance technology, applied in chemical instruments and methods, filter screens, solid separation and other directions, can solve the problems of insufficient wear resistance, low screening efficiency, low opening rate, etc. Strength, quick and efficient disassembly and assembly, avoiding the effect of relative motion

Active Publication Date: 2016-12-07
LUOYANG CHENGCHUANG WEAR RESISTANT MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

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Effect test

preparation example Construction

[0024] A method for preparing an industrial and mining cylinder screen with high wear resistance and high screening rate, comprising the following steps:

[0025] Step 1. Prefabricate the plane forming mold of the screen mesh, spray the release agent in the inner cavity of the forming mold, and lay the threaded steel bars in the forming mold in the same circumferential direction as the cylindrical screen to be prepared, and then preset the mold module in the forming mold, so that The feed end and discharge end of the formed cylindrical screen are opened with multiple gaps to match the screen frame to be installed, and then the forming mold is preheated to 100~120°C for standby;

[0026] Step 2. Weigh the prepolymer and the chain extender according to the components of the industrial and mining cylindrical sieve to be prepared, and heat the prepolymer to 70-80°C and the chain extender to 100-120°C respectively, and mix them evenly for preparation into polyurethane elastomer, sp...

Embodiment 1

[0039] A method for preparing an industrial and mining cylinder screen with high wear resistance and high screening rate, comprising the following steps:

[0040] Step 1. Prefabricate the plane forming mold of the screen mesh, spray the release agent in the inner cavity of the forming mold, and lay the threaded steel bars in the forming mold in the same circumferential direction as the cylindrical screen to be prepared, and then preset the mold module in the forming mold, so that The feed end and discharge end of the formed cylindrical screen are opened with multiple gaps to match the screen frame to be installed, and then the forming mold is preheated to 100°C for standby;

[0041] Step 2. Weigh the prepolymer and the chain extender MOCA respectively according to the components of the industrial and mining cylinder sieve to be prepared, and heat the prepolymer to 70°C and the MOCA to 100°C respectively, and then mix them uniformly to prepare a polyurethane elastomer. spare; ...

Embodiment 2

[0048] A method for preparing an industrial and mining cylinder screen with high wear resistance and high screening rate, comprising the following steps:

[0049] Step 1. Prefabricate the plane forming mold of the screen mesh, spray the release agent in the inner cavity of the forming mold, and lay the threaded steel bars in the forming mold in the same circumferential direction as the cylindrical screen to be prepared, and then preset the mold module in the forming mold, so that The feed end and discharge end of the formed cylindrical screen are opened with multiple gaps to match the screen frame to be installed, and then the forming mold is preheated to 120°C for standby;

[0050] Step 2. Weigh the prepolymer and the chain extender MOCA respectively according to the components of the industrial and mining cylindrical sieve to be prepared, and heat the prepolymer to 80°C and the MOCA to 120°C respectively, and then mix them uniformly to prepare a polyurethane elastomer. spare...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D28/00B07B1/22
CPCB07B1/22B29D28/00
Inventor 苏玉林李华有魏贵
Owner LUOYANG CHENGCHUANG WEAR RESISTANT MATERIALS
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