Air filter

Abstract

The invention discloses an air filter. A pre-filter assembly is located between a filter element and a dust collection cover assembly. A plurality of rotational flow pipes of the pre-filter assembly are installed on the lower side of an upper cover. The upper surface of the upper over is dust collection faces with an inclination or radian or step faces which are arranged from high to low. According to the air filter, the upper surface of the upper cover of the pre-filter assembly is the dust collection face with the inclination or radian or the step face arranged from high to low, dust, sand and other pollutants fallen on the upper surface slide into the rotational flow pipes along the dust collection face under the action of gravity, and then the dust, sand and other pollutants are gathered into the dust collection cover assembly so as to be discharged from a dust discharge valve in time; in this way, deposition of the pollutants is avoided, the maintenance period of the air filter isprolonged, and the maintenance cost is lowered. By means of reverse blowing, the effects of gathering the dust and other pollutants on the dust collection face and discharging the dust and other pollutants can be better. The distance between the upper surface of the upper cover of the pre-filter assembly and the main filter element is shortened and uniform, so that an air flow field can be evenlydistributed on the surface of the filter element beneficially, and a good filtering effect is achieved.

Description

technical field [0001] The invention relates to the field of air filters for engine intake systems, in particular to an air filter. Background technique [0002] As the power source of vehicles and engineering machinery, the performance of the engine's air intake system directly affects the power output performance of the engine. The intake system of the engine is mainly composed of three major components: the pre-filter assembly, the intake pipe, and the air filter. The air filter is the core component of the engine intake system. Its main function is to filter out dust, sand and other pollutants in the air and provide clean air for the engine. [0003] Desert air filter is a general term for an air filter that integrates the pre-filter assembly and the intake pipe of the intake system into one housing. The number of swirl tubes in the pre-filter assembly is more, Therefore, the desert air filter can be used for a long period of time on vehicles used in harsh environments...

AI Technical Summary

Problems solved by technology

[0005] The applicant aims at the shortcomings of the horizontal dust collection surface inside the existing desert air filter that cannot discharge dust in time, resulting in a short maintenance cycle of the filter element, etc., and provides an air filter with a reasonable structure. The upper cover of the pre-filter assembly The upper surface of the air filter is a dust collection surface with a slope or a radian or a stepped surface with a high and low arrangement, which is conducive to timely ash discharge and prolongs the maintenance cycle of the air filter

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