Multi-stage cyclone tube type construction machinery air filter

Abstract

The invention discloses a multi-level cyclone pipe type engineering machinery air filter. The number of filter levels is determined by the air intake volume and the air intake efficiency of an engineering machinery engine. Each level of filter is composed of a framework and a filtering material, wherein the porosity of the filtering material is reduced layer by layer from inside to outside, so that filtering layer by layer from large particles to small particles is achieved; the filtering material is composed of a base payer, a resistance layer and a surface layer, and achieves dissipation of energy under broadband random vibration and impact vibration. In order to reduce air intake noise, an air inlet is connected with a silencer. The air inlet of the filter adopts Y-shaped pipelines, the distance between the pipelines is adjusted in a self-adaptive mode according to noise caused by the airflow velocity of an air outlet pipe of the silencer, and therefore control over large-flow high-speed air filtered noise is achieved for the engineering machinery engine.

Description

technical field [0001] The invention relates to an air filter device, in particular to a multi-stage cyclone tube type air filter device for engineering machinery, which has the characteristics of large flow, high speed, low noise and the like. Background technique [0002] The air filter is one of the very important supporting products for construction machinery engines. It protects the engine by filtering out hard dust particles in the air, provides clean air to the engine, prevents engine wear caused by dust, and affects the reliability and durability of the engine. play a key role. The survey shows that under the same conditions of use, for an engine without an air filter, the wear of the piston, cylinder and piston ring is 4 to 10 times that of an air filter. Therefore, installing an air filter is an important way to prevent dust from wearing An effective measure for the engine. According to statistics, 70% of the early damage of engineering machinery engines is relat...

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Problems solved by technology

Deng Zhaoxiang et al. conducted research on engine intake muffler, and designed a three-cavity parallel side-branch intake muffler based on the principle of the resonance Helmholtz muffler, which was applied to a real vehicle for external acceleration noise experiments, and achieved good noise reduction effects. , but its muffler and filter are set independently, the structure is complicated, and it is difficult to popularize and apply in engineering

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