Multi-stage filtering type air prefilter assembly for heavy vehicles

Abstract

The invention discloses a multi-stage filtering type air prefilter assembly for heavy vehicles. The air prefilter assembly comprises an assembly shell, a filtering device and an air outlet cover, wherein a vertical opening is formed in the front end of the assembly shell; a windshield cover is matched with and arranged on the vertical opening; a flow guide plate which gradually inclines inwards from top to bottom is arranged in the vertical opening; the distance between the bottom edge of the flow guide plate and the bottom wall of the assembly shell is matched with the height of the filteringdevice; the air storage cavity is defined by the guide plate and the inside of the assembly shell; the air outlet cover is arranged at the bottom of the assembly shell; an air outlet cover opening communicating with the air storage cavity is formed in the rear end of the bottom wall of the assembly shell; and a limiting baffle used for preventing a filter shell from being excessively inserted isfixedly arranged at a position, close to the filtering device, of the air outlet cover opening. Components in the whole air prefilter assembly are low in manufacturing cost, the production cost is lowas well, structures among all components can be assembled, disassembled and replaced conveniently, and the air prefilter assembly has a good filtering effect.

Description

technical field [0001] The invention relates to the field of heavy-duty vehicle pre-filter assemblies, in particular to a multi-stage filtering air pre-filter assembly for heavy-duty vehicles. Background technique [0002] Heavy-duty vehicles refer to M-category and N-category vehicles with a maximum gross mass greater than 3500Kg. This type of car is a car train composed of heavy tractors and heavy trailers. This type of vehicle generally adopts a shaft series hydraulic suspension device, and is generally used to carry large cargoes whose size and weight exceed the limit stipulated by road traffic regulations. [0003] The air inlet of the existing air pre-filter assembly for heavy-duty vehicles has no blocking structure, and the dust and particles in the air are directly sucked into the interior of the air pre-filter assembly, which increases the frequency of replacement and cleaning of the filter components inside the air pre-filter assembly; in addition , The structure...

AI Technical Summary

Problems solved by technology

[0003] The air inlet of the existing air pre-filter assembly for heavy-duty vehicles has no blocking structure, and the dust and particles in the air are directly sucked into the interior of the air pre-filter assembly, which increases the frequency of replacement and cleaning of the filter components inside the air pre-filter assembly; in addition , the structure of the traditional heavy-duty vehicle air pre-filter assembly is too complicated, and it is troublesome to assemble, disassemble and replace

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