Front-mixing type double-pipe multifunctional water cutting gun for coal mine

The utility model discloses a front-mixing type double-pipe multifunctional water cutting gun for a coal mine. The front-mixing type double-pipe multifunctional water cutting gun comprises a cleaningrust removal nozzle, a cutting nozzle, a change-over valve, a mixing valve, a mixed sand tank, a flow adjusting valve, a K-shaped connector, a gun handle support and a change-over switch. The diameterof the cleaning and derusting nozzle is-1.5 mm; sector shape, the diameter of the cutting nozzle is-0.8 mm, the shape of the cutting nozzle is circular, the change-over switch is rotated clockwise, high-pressure mixed water is jetted out of the cutting nozzle at a high speed and can cut an object, the change-over switch is rotated anticlockwise, the high-pressure mixed water is jetted out of thecleaning and derusting nozzle at a high speed, cleaning and derusting can be conducted on the object, and the purpose of cutting-derusting conversion is achieved. 本实用新型公开了一种煤矿用前混式双管多功能水切割枪，包括清洗除锈喷嘴，切割喷嘴，转换阀，混合阀，混合砂罐，流量调整阀，K型接头，