Line printing and dyeing device for producing and processing pipe products

The utility model discloses a line printing and dyeing device for producing and processing pipe products. The spraying device comprises a rotary fixing seat, a rotary supporting rod, a spraying devicebody and a fixing circular ring. The bottom of the vertical rod is fixedly connected with a fixed circular ring through welding; the fixed circular ring is fixedly connected with a spraying device through clamping; a scribing groove is formed in the bottom of the cylindrical protective shell corresponding to the nozzle of the spray head; an electromagnetic valve is fixedly connected to the outerside, corresponding to the fixed ring, of the spraying pipe through a pipe joint; according to the utility model, the cylindrical protective shell and the scribing groove are arranged; paint sprayed out of the spray head is concentrated in the spraying process of the spray head; meanwhile, scattered paint is blocked, fuzzy noisy points are prevented from appearing on the edges of the marked markerlines, rework is prevented