Dustproof spraying device

The utility model belongs to the technical field of building construction devices, and particularly relates to a dustproof spraying device which comprises a supporting frame, a barrel is fixedly connected to the outer wall of the supporting frame, a supporting disc is fixedly connected to the top of the barrel, a protruding block is fixedly connected to the outer wall of the supporting disc, a rotating disc is arranged above the protruding block, and a dust falling device is arranged on the supporting frame. The dust falling device comprises a spray head hinged to the rotary disc and a hose, the hose is fixedly connected with a water inlet of the spray head, and the end, away from the spray head, of the hose penetrates through the water outlet pipe and is fixedly connected with the water outlet pipe. The dustproof spraying device is provided with the motor, when the motor is started, the gear fixedly connected with the output shaft of the motor rotates, in the process, the rotating shaft meshed with the gear