Air cannon block clearer is a special device used to prevent and remove the material blast and block of all kinds of bunker , hopper , cement preheating furnace , pipeline y section and mine drawshaft and drawslope 空氣炮清堵器是防止和消除各類型料倉,料斗、水泥預熱器窯和管道分叉處及礦山溜井、溜坡的物料起拱,粘倉閉塞等現象的專用裝置。