Self-cleaning air filter and self-cleaning step thereof

Abstract

The invention discloses a self-cleaning air filter. A main filter element is arranged in an air filter shell body; an air inlet is formed in a side face of the shell body; an air outlet is formed in the upper end of the shell body; a pressure air source is connected to a solenoid valve through a pipeline; the solenoid valve is connected to a safety filter element through a pipeline; an ash discharging opening is formed in the bottom of the shell body. According to the self-cleaning air filter disclosed by the invention, the pressure air source is connected to the solenoid valve through a pipeline; the solenoid valve is connected to the interior of the safety filter element through a pipeline. According to the self-cleaning air filter disclosed by the invention, pressure airflow passes through the solenoid valve and then is blown back to the safety filter element; air fluid instantly generates strong pressure difference on inner and outer surfaces of the filter element and dust pollutant particles are enforced to be dispersed and stripped from the outer surface of the filter element and are discharged from an air inlet or an ash discharging opening under the action of an air flow field. A blowing-back acting force acts on the inner surface of the whole safety filter element and the acting force is more uniform and does not damage filter paper on the outer surface of the filter element; meanwhile, a main filter element is repeatedly utilized, the service life is prolonged and the maintenance cost of the air filter is reduced.

Description

technical field [0001] The invention relates to the technical field of air filters, in particular to a self-cleaning air filter and its self-cleaning steps. Background technique [0002] The engines of gasoline, diesel vehicles, construction machinery and agricultural machinery need air from the outside to start combustion. The air filter installed on the vehicle can filter out dust, sand and other pollutants in the air, so as to provide sufficient and clean air for the engine. air. The working principle of the air filter is that the outside air enters from the air inlet, and then passes through the main filter element, dust, sand and other pollutants are adsorbed on the outer surface of the main filter element, and the clean air passes through the safety filter element, and finally flows out from the air outlet. engine. With the accumulation of use time, the amount of pollutants captured on the outer surface of the main filter element continues to increase, and the main f...

AI Technical Summary

Problems solved by technology

[0004] The applicant provides a self-cleaning air filter with a reasonable structure and its self-cleaning steps, aiming at the shortcomings of the above-mentioned existing air filter self-cleaning process that cannot clean all the dust and debris on the filter element, and easily damages the filter paper on the surface of the filter element. Comprehensive pulse blowback is carried out through the air collection bag and solenoid valve, so as to evenly remove dust and other pollutants on the outer surface of the filter element, and the dust cleaning is more thorough

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