Combined air filter element

Abstract

The invention discloses a combined air filter element of which a first filter element and a second filter element are cubic or rectangle-shaped; the second filter element and the first filter elementare distributed in symmetry front and back; a third filter element and a fourth filter element are symmetrically distributed on both sides of the first filter element and the second filter element; the third filter element and the fourth filter element are of semicircular or semi-arched ring structures; and the first filter element, the second filter element, the third filter element and the fourth filter element form a waist-shaped or elliptic three-dimensional annular filter element. The defect that the space of a hollow filter element of a conventional annular cylindrical filter element isinsufficiently utilized can be overcome; due to adoption of the first filter element, the second filter element, the third filter element and the fourth filter element, a conventional hollow part canbe sufficiently utilized; and due to up and down opened end surfaces, air flows penetrate through the filter elements in an axial direction, so that the air inlet resistance of the filter elements canbe reduced, the filtering are can be increased, a filter element of a same shape and volume has a large air inlet quantity and a dust containing capacity, and thus a high filtering efficiency and a long service life can be achieved.

Description

technical field [0001] The invention relates to the technical field of gas filter elements, in particular to an axial-flow combined air filter core for fluid filtration, and in particular to a mechanical connection structure. Background technique [0002] For internal combustion engines, the air generally needs to be filtered before it participates in combustion, so as to reduce the mechanical wear of the internal combustion engine caused by the dust and impurities carried by the air, and improve the efficiency and service life of the internal combustion engine. [0003] The traditional cylindrical annular filter element is formed by connecting the folded filter paper end to end, and is hollow; when the air inlet surface is in the axial direction of the filter element, the hollow part cannot be fully utilized, resulting in insufficient filtering area of ​​the filter paper and short service life of the filter element. limited. Contents of the invention [0004] The purpose...

AI Technical Summary

Problems solved by technology

[0003] The traditional cylindrical annular filter element is formed by connecting the folded filter paper end to end, and is hollow; when the air inlet surface is in the axial direction of the filter element, the hollow part cannot be fully utilized, resulting in insufficient filtering area of ​​the filter paper and short service life of the filter element. limited

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