Steel bar rust remover

The utility model discloses a steel bar rust remover which comprises a base, an adjusting device, a rust removing device and a dust discharging device. And the adjusting device comprises universal wheels, a fixing frame, a first motor, a first gear, a rack plate, fixing plates, sliding blocks, limiting blocks, first springs and sliding grooves, the top end of the base is fixedly connected with the fixing frame, the first motor is installed on the inner wall of the fixing frame, and the fixing plates are fixedly connected to the two sides of the inner wall of the fixing frame. A first motor is started, the first motor drives a first gear to rotate, the first gear drives a rack plate in meshed connection to rotate, the rack plate drives a supporting rod to move, the rack plate drives a limiting block to move through a sliding block, the sliding block slides along a sliding groove, the limiting block drives a first spring to be compressed, and when the first gear is separated from the rack plate, the first sprin