Powder spraying device for treating oil-containing dust

The utility model discloses a powder spraying device for treating oil-containing dust, and particularly relates to the technical field of powder spraying devices, the powder spraying device comprises a treatment box, a cleaning cylinder used for cleaning dust is movably installed in an inner cavity of the treatment box, a limiting mechanism used for limiting the cleaning cylinder is arranged in the treatment box, and the limiting mechanism comprises an installation cylinder and a limiting block. A motor is fixedly mounted in the treatment box, the output end of the motor extends into an inner cavity of the treatment box, one axial end of the mounting cylinder is fixedly connected with the output end of the motor, a sliding groove is formed in the radial outer wall of the mounting cylinder, and the limiting block is slidably mounted in an inner cavity of the sliding groove. When the middle of one side of a limiting block is flush with the middle of an inserting groove, a first spring can release the elastic po