Rotary anti-rust paint brushing device

The utility model relates to the technical field of civil engineering, in particular to a rotary antirust paint brushing device which comprises a device body, the device body comprises a rotary handle, a storage column is arranged on one side of the rotary handle, a paint brushing hole is formed in the storage column, a movable groove is formed in the side, close to the rotary handle, of the storage column, and the movable groove is communicated with the storage column. And the movable groove communicates with the paint brushing hole, a sponge barrel is connected into the paint brushing hole in a sleeved mode, and four rotating steel bars are installed on the sponge barrel. Through the arrangement of the storage column, the painting channel, the rotating steel bar and the sponge barrel, the sponge barrel is driven by the rotating steel bar to rotate, the sponge barrel is matched with the painting channel to conduct paint moistening on sponge, the sponge barrel with anti-rust paint wraps the exposed threaded r