Surface spraying equipment for mechanical part machining

The surface spraying equipment for mechanical part machining comprises a working box, a lifting seat is arranged on the inner wall of the working box, a rotating disc is arranged on the inner wall of the lifting seat, a spray gun mounting plate is fixedly mounted at the bottom end of the inner wall of the rotating disc, and a plurality of spray guns in a linear array are mounted on the inner wall of the spray gun mounting plate; a spray gun valve is installed on one side of the spray gun, and a liquid storage cavity is installed at the top end of the rotating disc. By opening the spray gun valve, the flow dividing pipe and the spray gun can be connected, then antirust liquid input and spraying are conducted on the spray gun, meanwhile, starting of the spray gun can be controlled by controlling the spray gun valve, then the spraying range of the spray gun is controlled through the starting number of the spray gun, and during spraying, the spraying efficiency is improved. And a second driving motor is started t