Strengthened cyclone single-barrel straight-through type air filter for desert

Abstract

The strengthened cyclone single-barrel straight-through type air filter for a desert, which successively consists of a blind window type tangential air inlet device (1), an air inlet cyclone device (2), an air / dust separating cavity (3), an automatic dust discharge system (4), a main filter (5) and a safe filter element (6). The strengthened cyclone single-barrel straight-through type air filter is structurally characterized in that air flowing in an engine flows through the blind window type tangential air inlet device (a preliminary cyclone device) at first to form cyclone, the rotation strength of airflow discharged from the main cyclone device is greatly strengthened via the air inlet cyclone device (the main cyclone device), and after the rotating airflow enters the air / dust separating cavity, dust in the airflow is subsided onto the wall of the separating cavity under effects of centrifugal force, is blown to a dust collecting cavity by automatic dust blowing blades, and then is discharged from the filter by a dust discharging valve via a dust discharging tube. After being precisely filtered by the main filter, air separated in a strengthened centrifuging manner flows through the safe filter element, and finally clean airflow is led to the engine from an air outlet tube of the main filter.

Description

technical field [0001] The invention relates to an air cleaner for heavy vehicles and construction machinery used in deserts, mines, construction sites and all dusty environments. Background technique [0002] For heavy-duty car air filters working in deserts and all dusty environments, the first condition that must be met is high pre-filtration efficiency. General OEMs believe that the pre-filtration efficiency of the desert air filter must meet the highest pre-filtration efficiency index in my country's automobile industry standard QC / T770-2006 "Technical Conditions for Dry Air Filter Assembly for Automobiles". Must be greater than 91%. The second condition that should be met is that the pre-filter must have the function of automatic ash discharge. The third must-have condition is that the filter assembly has a safety filter element, and its original resistance should not exceed 3.5kPa. [0003] Most of the current desert air filters in our country use reverse swirl tube...

AI Technical Summary

Problems solved by technology

The advantages and disadvantages of this prefilter are obvious. The advantage is that the prefiltration efficiency is high, which can reach 91%, or even higher, but its disadvantages are also very obvious:

[0004] (1) The resistance is large, which reduces the intake air volume and reduces the engine power;

[0005] (2) Complex structure, large volume and high cost;

[0006] (3) Difficult to discharge ash, unable to realize complete automatic ash discharge, inconvenient maintenance

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