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Integrated multi-layer metal sintered felt filter disc

A multi-layer metal and sintered felt technology, which is applied in the direction of filtration separation, fixed filter element filter, chemical instrument and method, etc., can solve the problems such as difficult cleaning of impurities

Inactive Publication Date: 2019-04-05
TIANJIN RIWANG ENVIRONMENT TECH
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

This high-priced filter disc product is suitable for repeated cleaning and utilization, but the impurities deposited in it are difficult to clean

Method used

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  • Integrated multi-layer metal sintered felt filter disc
  • Integrated multi-layer metal sintered felt filter disc
  • Integrated multi-layer metal sintered felt filter disc

Examples

Experimental program
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Embodiment Construction

[0018] In order to make the surface of the sintered felt stronger, the two sides of the sintered material are attached with 48 and 40 mesh metal multi-mesh, and the middle is a sandwich-type filter material with a simple structure of the support material. The warp and weft of the support material, and the concave and convex parts are repeatedly woven to form a multi-layer integral sintered layer integrated filter felt with cross-sectional gaps.

[0019] The upper and lower sides of the sintered felt are first sintered with high-density 48-mesh and 40-mesh metal mesh at a relatively close melting point, and then sintered with 8-mesh intermediate standard metal mesh or special-mesh woven special-shaped metal mesh as a support material. secondary sintering. In order to improve the compressive capacity of the support material and the sintered filter material, first passivate and sinter the concave and convex parts of the metal braided mesh as the support material during sintering,...

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Abstract

The invention relates to the industry of making of various plastic films, and particularly relates to a filtering material of an integrated multi-layer metal sintering felt filtering disc, which is applicable to high temperature resistant, high pressure resistant and high viscosity polymer melts and is high in permeability, low in resistance and high in dust holding rate. In order to meet production requirements of ultrathin and high-definition plastic films, original metal net filtering cannot meet the requirement on high filtering precision for a long time. A metal sintering felt filtering material with characteristics of high temperature resistance, high filtering precision, high dust holding rate and low resistance is widely accepted, and in order to meet the requirements of actual production application, further deep development of metal filter materials with multiple layers of different structures seems very important. Since all composition materials of the filtering disc is stainless steel, a used filtering disc can be melted to be reduced to stainless steel.

Description

technical field [0001] The invention relates to an integrated multi-layer metal sintered felt filter disc with high temperature resistance, high pressure, high permeability of high viscosity polymer melt, low resistance and high dust holding rate. Background technique [0002] With the need for high-definition plastic film production, the previous metal mesh filter has long been unable to meet the needs of high filtration accuracy. Metal sintered felt, a filter material characterized by high temperature resistance, high filtration accuracy, high dust holding efficiency and low resistance, has attracted widespread attention. At the same time, in order to meet the needs of actual production and application, it is necessary to further develop high-precision multi-layer metal filter materials with different structures. very important. [0003] The existing filter disc developed in Japan uses double-sided double-screen sintered felt as the main filter material, and a stamped sur...

Claims

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Application Information

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IPC IPC(8): B01D29/41
Inventor 不公告发明人
Owner TIANJIN RIWANG ENVIRONMENT TECH
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