Coal mining machine inner spraying water supply device adopting flexible structure center water pipe

The invention discloses a coal cutter inner spray water supply device adopting a flexible structure center water pipe, which comprises a water inlet seat, a rotary sealing assembly, a water outlet seat and the flexible structure center water pipe connected between the rotary sealing assembly and the water outlet seat, the rotary sealing assembly comprises a sealing seat and a rotary sleeve, and the water outlet seat comprises an adjusting seat and a joint seat. One end of the central water pipe is inserted into the rotary sleeve, the other end of the central water pipe is inserted into the joint seat, the central water pipe comprises a hose and two pipe joints, and the pipe joints are connected with the hose through an outer sleeve. The central water pipe is of a flexible structure, so that the problem of premature sealing failure caused by eccentric wear between the outer surface of the water pipe and a rotary seal due to the fact that the two ends of the central water pipe are not coaxial and the mounting p