Spraying device for macromolecular grouting material

According to the technical scheme, the spraying device for the macromolecule grouting materials comprises a spraying pipeline and a spraying assembly, the spraying pipeline comprises a corrugated hose, a connector and a pipe body, and the connector and the pipe body are fixed to the two ends of the corrugated hose respectively; the spraying assembly comprises a pipe head, a multi-way valve, a strip-shaped pipe and a spraying head, the pipe head is connected to the pipe body in a threaded mode, and one port of the multi-way valve is connected with the end, away from the pipe body, of the pipe head. According to the utility model, the joint and the pipe body can be respectively butted with the slurry output port and the spraying port, and the spraying pipeline is used as an independently detachable element, so that the subsequent cleaning and the replacement of accessories are facilitated; the flow direction of grout is controlled through the multi-way valve, the transverse covering face of the grout is expande