Wall flow type net plate apparatus with reverse jet regenerating unit for collecting microparicle discharged by diesel vehicle

Abstract

This invention discloses a converse regenerating wall flow type metal net plate apparatus for collecting microparticle discharged by diesel vehicle. The composite metal plate masking filter layer inclined certain angles in outer shell, 'WW' type is formed through baffle. Extension room is set between air intake and the filter layer, the room is connected to scavenging valve and carbon smoke second collecting device. Pneumatic disc valve, blowback cavity and air compress air tank at one side of the gas outlet are connected to the shell. Waste gas discharged by the engine enters from collector intake, and particles in the waste gas are entrapped when it flows through 'WW' type composite metal shadow masking. Discharging back pressure ascends when the particles deposit to certain quantity, and the regenerating equipment starts to blow out the accumulative particles from filter, and the particles are second collected and burned in collector. The structure is simple, cost is low, purification effect and regeneration effect is good, life is long and a good product for generalization.

Description

technical field [0001] The invention belongs to the scope of vehicle tail gas purification equipment, in particular to a wall-flow type metal mesh plate diesel vehicle exhaust particle collector with reverse jet regeneration. Background technique [0002] Diesel engine is a widely used power device with good power, economy and durability. However, the harmful particles emitted by diesel engines are much higher than gasoline engines, especially fine particles with a diameter of 0.01-10 microns have carcinogenic effects and seriously threaten human health. This has become one of the bottlenecks restricting the further application of diesel engines. At present, installing a particulate filter on the exhaust line of a diesel engine is an effective and economical aftertreatment technology. It collects the particulates in the diesel engine exhaust in the filter by means of interception and deposition. When the particulates accumulate to a certain extent, they are removed by combu...

AI Technical Summary

Problems solved by technology

At present, the filter materials using the axial filtration method generally adopt a porous structure, and the channels in the filter body are tortuous and complicated, and the particles are mainly deposited at the front end of the filter body, so the utilization rate of the filter material is low, and the deposition of particles causes the channels to be blocked quickly, which needs to be carried out. frequent regeneration

Radial filtration mostly uses fiber felt as the filter material, which has the advantages of good toughness and high filtration efficiency, but due to the dense distribution of fibers, the regeneration process is relatively slow

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