Steel structure surface polishing and derusting device

The utility model relates to the technical field of steel structure processing, in particular to a steel structure surface polishing and derusting device which can absorb and clean rust slag while derusting, reduces the subsequent cleaning process, is more efficient in derusting and improves the reliability. Comprising a rust removal rack, a rust removal motor, a mounting shaft, a polishing piece, a fixed ring frame, supporting force springs, a surrounding cover, an abutting piece, a grip, a communicating pipe, a rust removal cylinder, a filter cylinder, a fan, an exhaust head, a hinge and a cover plate, the output end of the rust removal motor is provided with the polishing piece through the mounting shaft, the outer side of the front end of the rust removal rack is connected with the rear end of the fixed ring frame, and the fixed ring frame is connected with the rear end of the abutting piece through the supporting force springs. The other end of the communicating pipe is communicated with one side of the