Pipeline device capable of automatically regulating pressure to realize long-distance injection

The invention relates to the technical field of mine spraying operation, in particular to a pipeline device capable of achieving long-distance spraying through automatic pressure regulation, which comprises a water flow pipeline, a rocker arm spray head and a piston compression air cylinder device, the water flow pipeline comprises a water flow vertical pipeline section, a water flow bent pipeline section and a water flow horizontal pipeline section; an air bag is arranged at the water flow bent pipe section, and the air bag is communicated with the water flow bent pipe section through a water-blocking breathable film; the piston compression air cylinder device comprises an air cylinder, an air cylinder piston and a hose, the air cylinder is communicated with the water flow bent pipe section through the hose, and a one-way air inlet valve is arranged on the air cylinder. Compared with the prior art, the pipeline device capable of achieving long-distance injection through automatic pressure regulation can stor