Header arrangement structure of chemical tanker

The chemical tanker header arrangement structure comprises a tanker body and a header, a mounting block is welded to the tanker body, a flow guide pipe communicating with the header is fixedly connected to the side, close to the header, of the mounting block, a rotating disc is connected to the other side of the mounting block in a 360-degree rotating mode, and an external connecting pipe is fixedly connected to the rotating disc; a folding pipe with the end fixed to the inner wall of the outer connecting pipe is embedded in the inner side of the outer connecting pipe, the free end of the folding pipe is fixedly connected with a butt joint ring, the butt joint ring is in butt joint with an external preset pipe, and when the folding pipe is folded, the butt joint ring is located at the position of the free end of the outer connecting pipe. The flow guide pipe and the collecting pipe on the mounting block are communicated, the rotating disc rotating on the mounting block can rotate the external pipe to any angl