It is used to feed the dry powder material or small particle material in the upper bin continuously and evenly to the next equipment, which is a quantitative feeding equipment. It is composed of valve body, drive shaft, blade and reducer. The gear motor drives the drive shaft and impeller to rotate, so as to achieve the purpose of ash discharge. It has the characteristics of good blade wear resistance, high gas locking performance, complete discharge, smooth connection and compact structure. Impeller feeder is widely used in cement, building materials, chemical, metallurgy and light industry and other departments of the material system as feeding equipment.