Conductive anti-falling filtering bag and preparation method thereof

Abstract

The invention discloses a conductive anti-falling filtering bag which comprises a bag body, wherein the bag body adopts a three-layer complex filtering material structure and comprises a dust meeting layer, a base cloth layer and a bottom layer in sequence from outside to inside, wherein the dust meeting layer and the bottom layer are of meshed structures formed by irregularly winding one or multiple fibers of polyester fibers, acrylic fibers, polyimide fibers, polyphenylene sulfide fibers and polytetrafluoroethylene fibers; the base cloth layer is of a warp-weft intercrossed meshed structure; the filtering bag further comprises a metal conductive sheet; a vertical seam overlapping edge is arranged on the side surface of the bag body; the metal conductive sheet is vertically arranged at the seam overlapping edge of the bag body and is fixedly seamed together with the bag body through a PTFE (polytetrafluoroethylene) seam line; a thin copper wire connected to a bag cage is arranged on the top of the metal conductive sheet. The invention also discloses a preparation method for the filtering bag. The conductive anti-falling filtering bag has the advantages of high overall intensity, long service life and high conductivity and has static electricity prevention performance; the preparation method for the filtering bag is simple; the raw materials are readily available; the preparation cost is low; the preparation method is suitable for large-range popularization and application.

Description

technical field [0001] The invention relates to a filter bag, in particular to a conductive anti-shedding filter bag and a preparation method thereof. Background technique [0002] After the concentration of general industrial dust reaches a certain level, that is, the explosion limit, if it encounters factors such as electrostatic discharge sparks or external ignition, it will easily cause explosion and fire. The dust filter bag is mainly used to remove dust in the air. After the dust filter bag is used, dust will accumulate on the surface of the dust filter bag. These dusts will generate static electricity due to mutual friction, and the traditional filter bag does not have anti-static function. The filter bag If the static electricity on the surface is not eliminated in time, it is prone to explosion and affects safe production. At the same time, due to the change of flue gas under working conditions, the fiber of the filter bag will crack and fall off due to oxidation, ...

AI Technical Summary

Problems solved by technology

[0002] After the concentration of general industrial dust reaches a certain level, that is, the explosion limit, if it encounters factors such as electrostatic discharge sparks or external ignition, it will easily cause explosions and fires.

The dust filter bag is mainly used to remove dust in the air. After the dust filter bag is used, dust will accumulate on the surface of the dust filter bag. These dusts will generate static electricity due to mutual friction, and the traditional filter bag does not have anti-static function. The filter bag If the static electricity on the surface is not eliminated in time, it is prone to explosion and affects safe production

At the same time, due to the change of flue gas under working conditions, the fiber of the filter bag will crack and fall off due to oxidation, acid and alkali corrosion, etc. in the later stage of use of the filter bag, and the ash hopper will be blocked, which will cause the wear of the fan blades and cause huge losses.

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