Locking mechanism and coal dust collector including it

Abstract

The invention discloses a locking mechanism and a coal dust collector comprising the same, the locking mechanism comprises a housing, a lock pin, a fixing block and a driving part, wherein an accommodation cavity is formed in the housing, and an opening communicated with the accommodation cavity is formed in the housing; a guide seat is arranged in the opening, and a through guide channel is arranged in the guide seat and used for communicating the accommodation cavity with the outside; the lock pin is arranged in the guide channel and can reciprocate along the guide channel; the fixing blockis opposite to the housing, and a locking part which is matched with the locking pin for use is arranged on the fixing block; the driving part is arranged in the accommodation cavity, connected with the lock pin and used for driving the lock pin to reciprocate so that the locking part can lock or unlock. According to the coal dust collector, a manhole is locked, misoperation is avoided, the coal dust collector is monitored and controlled, starting and stopping of the locking mechanism is controlled according to the monitoring result, asphyxia of a maintainer due to hazardous gas leakage is avoided, and the operation safety is ensured.

Description

technical field [0001] The present invention relates to the technical field of coal chemical powder preparation, and more specifically, to a locking mechanism and a coal powder collector including the locking mechanism. Background technique [0002] Before coal is converted into gas or solid fuel, the coal is first prepared into coal powder. Coal powder preparation usually adopts the process technology of "grinding and drying + grinding powder separation and dust collection + intermediate storage bin". Compared with ordinary coal, the prepared coal powder Powder, low moisture and ash content, small particle size of coal powder, better conversion effect, but coal powder is prone to explosion during collection, storage and transportation, and the destructive force is great after explosion. [0003] A filter bag is arranged in the pulverized coal collector for collecting pulverized coal and filtering out impurities in the pulverized coal. The pulverized coal collector is usual...

AI Technical Summary

Problems solved by technology

There are multiple explosion vent panels and manholes installed on the pulverized coal collector. When the explosion vent panels or manholes are opened, the high concentration of carbon monoxide may cause maintenance personnel to suffocate and cause casualties; or oxygen enters the coal through the explosion vent panels or manholes. Once the powder collector reaches the explosion threshold of coal powder, it will cause the coal powder to explode or the filter bag to ignite spontaneously, causing a safety accident

[0004] In addition, the position of the manhole of the pulverized coal collector is prone to leakage due to misoperation, and the soft connection below the feed valve is also prone to wear due to fatigue and wear.

Since the above location is a leakage hazard area and in a relatively confined space, once an open flame or a high-temperature heat source is encountered, it is relatively easy to form a coal dust cloud within the explosion limit range, causing a combustion explosion accident

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