A dust blowing and cleaning device suitable for a dry dust removal knife gate valve

By introducing a three-stage protection structure of electromagnetic reversing valve, check valve and manual ball valve into the dry dust removal system, combined with radial air duct branches and valve plate reciprocating motion, the problems of dust caking and safety hazards of knife gate valves are solved, achieving efficient dust removal and system stability, and extending the service life of knife gate valves.

CN122148831APending Publication Date: 2026-06-05WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
Filing Date
2026-04-23
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In dry dust removal systems, knife gate valves are prone to dust caking, valve jamming, and malfunction, and pose safety hazards and system instability. Existing purging methods are inefficient, unsafe, and cannot completely remove dust accumulation in the dead corners of the valve cavity.

Method used

A three-level safety protection structure, including an electromagnetic reversing valve, a check valve, and a manual ball valve, was designed. Combined with radial airway branches and the reciprocating motion of the valve plate, it achieves all-round dust removal. Equipped with a control module to automatically control the purging process, it ensures safety and thorough removal of accumulated dust.

Benefits of technology

It effectively reduces the failure rate of gate valve jamming, extends service life, improves dust removal efficiency, ensures system stability and safety, and reduces maintenance costs.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN122148831A_ABST
    Figure CN122148831A_ABST
Patent Text Reader

Abstract

The present application relates to a kind of dust cleaning blowing device suitable for dry dedusting knife gate valve, including the knife gate valve of pipeline between dry box and warehouse pump installation, the valve body of the knife gate valve is provided with the blowing hole of communication valve cavity, the blowing pipe is connected on the blowing hole, electromagnetic reversing valve, check valve, first manual ball valve are sequentially provided on the blowing pipe along the flow direction of blowing gas, several radial distribution air passage branch pipes cooperate valve plate to clear residual, valve cavity has no blowing dead angle, knife gate valve jam failure rate is greatly reduced, three-stage safety protection structure of electromagnetic reversing valve, check valve, first manual ball valve is used, completely prevent coal gas backflow leakage, meet the safety requirement of high risk working condition of blast furnace gas, reduce dust concretion and scouring wear, the service life of knife gate valve is greatly extended, maintenance cost is greatly reduced, compact structure, installation is convenient, can directly transform existing dry dedusting knife gate valve, and universality is high.
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