engine air filter

Abstract

The invention discloses an air filter of an engine. The air filter of the engine comprises a cylinder and a filter element component arranged in the cylinder, wherein the cylinder comprises a cylinder body, and an ash tray which covers the bottom part of the cylinder body through a hoop; the filter element component comprises a main filter element and a safety filter element; an air inlet is formed in the center of one end of the cylinder body; a coaxial sealing sleeve is arranged at the inner end opening of the air inlet; a filter element positioning bracket is provided with an upper arc-shaped centering part of which the circle center is in the axis of the cylinder body, and the radius of the upper arc-shaped centering part is equal to that of the outer cross section of the main filter element. According to the air filter of the engine, the sealing sleeve of the structure that a sealing conical surface double-layer wall is matched with an arc-shaped guide surface, and the filter element positioning bracket are adopted, so that the filter element is centered and positioned automatically; the insertion of the main filter element and the safety filter element is facilitated; the installation by users is facilitated to the greatest extent; the labor intensity is greatly lightened; incorrect installation is stopped; a PU (poly urethane) material of the filter elements is prevented from being cracked and damaged by cutting; meanwhile, a rubber ring sealing structure is omitted; a sealing effect is improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an engine air filter. Background technique [0002] The existing construction machinery engine air filter adopts a radial sealing structure in which the filter element and the straight cylinder type sealing sleeve are plugged and matched, and is supplemented by a rubber ring sealing structure on the end face of the filter element, that is, the apron is bonded to the end steel plate of the filter element by glue, so that , During assembly, the apron presses against the inner wall of the air filter cylinder for sealing. However, the radial sealing structure of the filter element and the straight cylindrical sealing sleeve has a poor sealing effect, and when the axial compression force of the filter element is insufficient, the rubber ring is easy to loosen, causing air leakage and affecting the working performance of the air filter. [0003] In addition, when the filter elemen...

AI Technical Summary

Problems solved by technology

However, the radial sealing structure of the filter element and the straight cylindrical sealing sleeve has poor sealing effect, and when the axial compression force of the filter element is not enough, the rubber ring is easy to loosen, causing air leakage and affecting the working performance of the air filter

[0003] In addition, when the filter element using PU sealing material is mated with the straight cylindrical sealing sleeve, since there is no self-positioning device when the filter element is assembled, the filter element and the sealing sleeve cannot be effectively centered, and it is difficult to insert the filter element into the sealing sleeve, making installation more difficult , labor-intensive and time-consuming, and may cause the PU material to be cut and damaged and affect the sealing effect

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