Method for gap repair of waste air filter filter paper

Abstract

The invention provides a method for void repair of a waste air-filter filter paper and relates to the technical field of filter paper recycle. The method comprises the steps that the adhered portions at two ends of dismantled filter paper are cut off, then the paper is flattened and is purged by using high-pressure nitrogen, and dust on the surface of the filter paper is removed; then the filter paper is flatly laid on a screen, and the surface of the whole filter paper is vertically purged by using a high-pressure nitrogen flow, so that the high-pressure nitrogen flow penetrates through the surface of the filter paper; the filter paper is turned over and flatly laid on the screen, and the surface of the whole filter paper is vertically purged by using a high-pressure nitrogen flow, so that the high-pressure nitrogen flow penetrates through the surface of the filter paper to remove filtration matter in voids of the filter paper; the high-pressure nitrogen flow is used as a carrier, repair liquid is atomized and is uniformly sprayed on the surface of the filter paper, the filter paper is repaired, the repair liquid is uniformly sprayed on the front and back sides of the filter paper, and curing and drying are performed. The recovered filter paper is purged by using the high-pressure nitrogen flow for multiple times, the filtration matter on the surface and in the voids of the paper is removed, and then the voids of the filter paper are repaired by through the repair liquid, so that the original air filtering effect of the filter paper is recovered.

Description

technical field [0001] The invention relates to the technical field of filter paper recovery and reuse, in particular to a method for gap repair of waste air filter filter paper. Background technique [0002] The air filter is an important part of the engine. Its function is to filter out dust and mechanical impurities in the air entering the engine, so as to reduce engine wear, optimize the combustion process of the engine, and reduce the emission of organic pollutants such as carbon monoxide. [0003] At present, the air filter used in automobiles at home and abroad is usually a housing and an end cover that are stamped and sealed into one body through a stamping process, and a filter element with a paper filter element is connected to the end cover of the closed inner cavity of the housing. This kind of filter cannot be disassembled because the shell and the end cover are pressed together, so it is usually scrapped after being used until the maintenance period is replaced...

AI Technical Summary

Problems solved by technology

This kind of filter cannot be disassembled because the shell and the end cover are pressed together, so it is usually scrapped after being used until the maintenance cycle is replaced.

[0004] In the prior art, the recycling of waste air filters is generally aimed at dismantling and recycling the casing and end caps, and there is no method for recycling the filter paper of the engine air filter