Dustproof device for spraying of ship loader

A dust-proof device for spraying of a ship loader comprises a spraying support, a nozzle, a dust-proof device body and an electromagnetic chuck. The nozzle is connected to the edge of the spraying bracket; the dustproof device comprises a dustproof sleeve, a movable sleeve and a bearing rod; one end of the dustproof sleeve sleeves the nozzle, the other end of the dustproof sleeve is connected to one end of the bearing rod, and the other end of the bearing rod is connected to the movable sleeve; the movable sleeve is sleeved on the spraying bracket; the electromagnetic chuck is connected to the spraying support and located above the movable sleeve. A limiting piece is arranged on the spraying support and located below the movable sleeve. A worker can directly control the adsorption of the electromagnetic chuck by controlling the switch of the power supply on or under the ship so as to control the dustproof sleeve to vertically sleeve the nozzle, so that the dustproof function is realized, dust can be prevented