Full-automatic pipe spraying device and system

The invention discloses a full-automatic pipe spraying device and system.The device comprises a spraying assembly and a rotating assembly, and the spraying assembly comprises a support, a plurality of spraying gun heads, a plurality of partition plates, an air pump and a plurality of paint storage devices; the spray gun heads and the partition plates are fixed on the cross beam at intervals in a single row; the spray gun heads are connected with the air pump, the paint storage device is connected with the spray gun head pipelines, the number of the paint pipelines is multiple, and every two adjacent spray gun heads are connected into different paint pipelines; the rotating assembly comprises a rotating motor and a rotating fixing assembly, and is used for fixing a to-be-processed pipe below the cross beam and enabling the pipe to rotate around the axis of the pipe; the lower ends of the partition plates are close to the surface of the pipe so that paint sprayed by one spray gun head can be limited to be only