Application of Industrial Air Cannon in Blockage of Coal Bunker

　　Underground coal bunker is an indispensable link in underground transportation of coal mines, it plays a very important role in regulating and buffering the transportation of coal. The efficiency of coal mine loading and unloading system is closely related to the output of coal mine. Underground coal bunkers and skips are important components of coal mine loading and unloading system.

　　For mines with high water content in raw coal, the phenomenon of coal sticking, and blockage is even more serious. Blockage of coal bunkers and skips seriously affects the normal production of mine loading and unloading system and even the entire mine. At home and abroad, a lot of research has been done on the prevention and control of coal bunker and skip clogging, and the flow rules of some raw coal in bunkers have been mastered.

　　Xuzhou Mining Group has designed a coal bunker conduction device, which can break the blockage of coal in a compound movement mode and achieve the purpose of dredging the bunker. Pingdingshan Coal Mine Machinery Factory has developed a loose product that utilizes the reciprocating motion of a hydraulic cylinder to clear clogs. Air cannon is used to destroy and block the vault with the silo wall as the fulcrum, so that coal bunker can be smoothly discharged. Henan Sinpo Machinery Co., Ltd has developed a lifting skip, which is a bottom discharge skip. This equipment utilizes the blasting of air cannon to impact the blocked area with strong airflow, which achieves a better effect of clearing the blockage and protects personal safety of the workers.