Pulse self-cleaning type air filter

Abstract

The invention relates to an impulse self-cleaning air filter, which comprises four parts as filter, self-cleaning, control and pressure protection. Wherein, the filter part utilizes three-stage filtration; the Venturi tube of self-cleaning part is relatively arranged above the filter cylinder of filter part; the passive pressure collecting point of sealing box is connected into the power control box of said control part; the signal terminal of PLC micro computer inside the power control box is connected to the electromagnetic impulse valve which is connected to the compressed air source and the injector of self-cleaning gas source; the pressure differential alarm inside the sealing box is serially connected between the PLC micro computer and the pressure differential controller; the pressure collecting point of passive pressure protective gate is connected between the PLC micro computer and the passive pressure protective gate. The invention has the advantages that: it has lower gas consumption, better washing effect, better sealing ability, long service life, while the gas leakage is zero, the filter accuracy is 0.3 mum, and it uses passive pressure protection.

Description

technical field [0001] The invention relates to a pulse self-cleaning air filter, which integrates machine, electricity, gas and a filter cylinder to filter air and automatically clean dust, and belongs to the technical field of air filters. Background technique [0002] In the prior art, there are three types of filters: roller shutter type, oil cylinder type, and cloth bag type. Due to their structure, they have the following defects in common, that is, large air consumption, weak explosive force, poor flushing effect, and filtration accuracy above 5 μm , Serious blockage occurs during use. If the filter element is replaced at the same time, it will seriously affect the normal operation of the equipment. The filter box structure has poor sealing performance, high air leakage rate and short service life. Contents of the invention [0003] The purpose of the present invention is to address the above-mentioned defects, and propose a pulse self-cleaning air filter integrat...

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Problems solved by technology

[0003] The purpose of the present invention is to address the above-mentioned defects, and propose a pulse self-cleaning air filter integrating machine, electricity, gas and filter cartridge, which can effectively overcome the problems of large air consumption, weak explosive force and flushing in the prior art. The effect is poor, and the filter element is replaced at the same time, which affects the normal operation of the equipment, and the filter box structure has poor sealing performance, high air leakage rate, and short service life.

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