Powder filtering device

The utility model relates to the technical field of filtering, in particular to a powder filtering device which comprises a box body, a protection box is fixedly installed at the top of the box body,a motor is fixedly installed at the top of an inner cavity of the protection box, and an output shaft of the motor penetrates through the protection box and the box body in sequence and extends to aninner cavity of the box body to be welded with a rotating rod. A round plate is supported by a bearing on the surface of the rotating rod, the surface of the round plate is fixedly installed on the inner wall of the box body, and filtering grooves are formed in the positions, located on the two sides of the rotating rod, of the top of the round plate; through the arrangement of the box body, the protection box, the motor, the rotating rod, the circular plate, the coarse screen plate, the long plate, the fixing block, the fine screen plate and the baffle, the powder filtering device achieves the advantage of preventing