Metal connecting piece surface spraying device

The utility model discloses a metal connecting piece surface spraying device, which belongs to the technical field of metal connecting piece spraying and comprises a spraying cylinder component, a first fixing pipe is mounted on one side of the spraying cylinder component, a second fixing pipe is mounted on one side, far away from the first fixing pipe, of the spraying cylinder component, and a moving block component is mounted at the bottom of the spraying cylinder component. A rotary drying device is arranged on the outer side of the fixed pipe II; by arranging the rotary drying device, the device can accelerate the solidification speed of a coating on a metal connecting piece through flowing of hot air when needed, so that the machining time of the metal connecting piece is shortened, and the working efficiency of the device is improved; by arranging the material storage device, the device can adjust the storable capacity of paint to a certain degree when needed, and a worker can assemble and disassemble t