Steel surface polishing and derusting device

The utility model relates to the technical field of steel block surface rust removal, and discloses a steel surface polishing and rust removal device which comprises a balance weight plate, a mounting plate is fixedly connected to the top side of the balance weight plate, a material barrel is rotatably connected to the right side of the mounting plate, and a motor is fixedly connected to the top side of the balance weight plate. The device comprises a motor, an output shaft of the motor is fixedly connected with a gear, the outer side of the gear is in meshed connection with a gear sleeve, the gear sleeve fixedly sleeves the outer side of a material barrel, the right side of the material barrel is in sealed threaded connection with a sealing cover, and the outer side of the material barrel fixedly communicates with a liquid pipe. After the steel blocks are put into the material barrel, the gear and the gear sleeve are matched to enable the material barrel to rotate in the rust removal process of the rust remo