Automatic spraying device for inner wall of bent pipe

The utility model provides an automatic spraying device for the inner wall of a bent pipe. The automatic spraying device comprises a pipe guiding assembly, a flexible pipe, a walking trolley mechanism, a feeding device and a rotary spraying device. The guide pipe assembly is fixedly arranged in the horizontal direction; the flexible pipe is movably arranged on the pipe guiding assembly through thewalking trolley mechanism. The walking trolley mechanism can reciprocate in the extending direction of the guide pipe assembly through a control device, and the control device is electrically connected with the walking trolley mechanism. One end of the flexible pipe is detachably connected with the feeding device, and the flexible pipe is communicated with the feeding device; and the other end ofthe flexible pipe is detachably connected with the rotary spraying device, and the flexible pipe communicates with the rotary spraying device. The automatic spraying device is simple in structure, convenient to operate, safe,