There are many different types of coal feeders used in different industries. As far as the power plant is concerned, its coal blending equipment is mainly used as the equipment for taking and unloading coal in the coal conveying system. It can accept the coal sent from the previous process and the coal stored in the coal bunker, and send them to the equipment of the next process, that is, use the conveying equipment to convey them to the boiler or other receiving equipment. At present, there are many kinds of coal feeders used in power plants, including excitation type and motor vibration type, impeller type, belt type and scraper type. The coal feeding equipment assisting them is mainly coal plough, coal blending vehicle and moving belt conveyor. In addition, electromagnetic and motor vibration coal feeders are mainly used in coal unloading silos, such as coal mixing silos and coal storage silos, while impeller coal feeders are mainly used in long coal seams. Belt unloading is adopted in the coal hopper of dumper. ? Coal blending trolley and mobile belt conveyor work in dense raw coal bunker, but it is not very convenient to use in medium storage pulverizing system. At the same time, it is not very convenient to use in the warehouse where pulverized coal and raw coal are intertwined. Usually use a plow.