Backmixing preventing system

Abstract

The invention relates to a backmixing preventing system, and belongs to the technical field of gas-solid separation. The backmixing preventing system is applied to a dust hopper of a cyclone dust collector and comprises a backmixing preventing cone and a gas pumping mechanism; the backmixing preventing cone is located in the dust hopper, the backmixing preventing cone is close to a dust inlet of the dust hopper, and the gas pumping mechanism comprises a gas pumping pipe, a purifying assembly and a gas pumping assembly; one end of the gas pumping pipe is connected with the backmixing preventingcone, and the other end of the gas pumping pipe is located outside the dust hopper and connected with the purifying assembly; and dust-containing gas in the dust hopper can be pumped into the purifying assembly under the effect of the gas pumping assembly, and the dust-containing gas is exhausted through the gas pumping assembly after being purified through the purifying assembly. The backmixingpreventing system is applied into the dust hopper, escaping of fine dust entering the dust hopper is reduced, secondary purification of a gas flow exhausted from the cyclone dust collector is achievedunder the price of low energy consumption, and the separation efficiency of the cyclone dust collector is improved.

Description

Technical field [0001] The invention relates to the technical field of gas-solid separation, in particular to an anti-backmixing system. Background technique [0002] The principle mechanism of cyclone dust collector is as follows figure 1 As shown, the dust-containing airflow enters the cyclone dust collector from the dust-containing gas inlet 51 of the cyclone dust collector, and spiral flows are generated in the separation cylinder section 52 and the separation cone section 53, and the spiral flow is of any cross section in the separation cylinder section 52 and the separation cone section 53. The flow is divided into two areas, the outer swirling flow and the inner swirling flow. The part close to the inner wall of the cylinder is the outer swirling flow, and the spiral direction of the gas flows downward; the area near the center (including the center point) is the inner swirling flow. The spiral direction of the gas flows upward. The downward swirling flow will generate ce...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the above problems, to provide an anti-return mixing system, which is applied inside the ash hopper, reduces the escape of dust entering the ash hopper, and can realize the anti-cyclone dust collector at the cost of lower energy consumption. The secondary purification of the exhaust airflow improves its emission quality and improves the above problems

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