Pulse blowing valve

Abstract

The invention provides a pulse jetting valve, which consists of three stages of valve bodies connected in series, wherein the first-stage valve body comprises a first-stage valve, a first-stage valve cover and a first-stage membrane, and the first-stage membrane is plugged between an air inlet channel and an air outlet channel of the first-stage valve; the second-stage valve body comprises a second-stage valve body, a second-stage valve cover and a second-stage membrane, and the second-stage valve is provided with a second-stage unloading hole; the third-stage valve body comprises a third-stage valve body, a third-stage valve cover and a third-stage membrane, and the third-stage valve body is provided with a third-stage unloading hole; and the first-stage membrane, the second-stage membrane and the third-stage membrane are provided with damping holes respectively by which three pairs of air cavities of the three valve bodies have the same pressure, and the three-stage valve cover is provided with an air outlet which is plugged by a pilot head of an electromagnetic valve. The pulse jetting valve has the advantages of the realization of ultra low pressure jetting, flexible action, large jetted air amount, and large effective dust removal area.

Description

technical field [0001] The invention belongs to the field of pulse bag dust removal equipment, in particular to a pulse injection valve used under the condition of low air source pressure. Background technique [0002] The pulse cleaning system is the core part of the pulse bag filter. Generally, the straight-through pulse injection valve reduces the injection pressure to below 0.3Mpa due to its small resistance loss, generally between 0.15 and 0.3Mpa, which belongs to the low-pressure pulse injection valve. Blowing, its cleaning ability and blowing effect are better. At present, the pulse valve commonly used in the market usually has the largest specification of no more than 12 inches, which mainly has the following shortcomings: [0003] 1. The air output of the injection valve is small, and the cleaning area of ​​the filter bag is relatively small. With the increasing scale of the bag filter, the processing capacity of a single pulse valve is not enough, and the cleaning...

AI Technical Summary

Problems solved by technology

[0003] 1. The air output of the injection valve is small, and the cleaning area of ​​the filter bag is relatively small. With the increasing scale of the bag filter, the processing capacity of a single pulse valve is not enough, and the cleaning is not thorough enough;

[0004] 2. The reaction time is long and not sensitive enough;

[0005] 3. The injection pressure is about 0.15-0.3Mpa, and compressed air is required for injection, so the cost is relatively high

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