According to the working conditions, it can be divided into gravity unloading rotary valve, pneumatic conveying rotary valve and variable unloading rotary valve. According to the function, it can be divided into standard rotary valve, high pressure rotary valve, high temperature rotary valve, wear-resistant rotary valve, anti-jamming rotary valve, cleaning rotary valve and electric rotary valve. The rotary feeding valve rotates an impeller with equal structure in the shell through the drive of motor and reducer. The material from the upper silo or feeding device of the shell is filled into the cavity of the impeller, and the material is discharged from the lower part of the shell with the rotation of the impeller. According to the requirements of the conveying system, the material can be discharged uniformly and continuously to the downstream. Working Sketch