Self-feeding rotary jet flow multi-hole spray nozzle

The invention relates to a self-feeding rotary jet flow multi-hole spray nozzle, which comprises a spray nozzle cap, a back end shaft, a screw and the like. The self-feeding rotary jet flow multi-hole spray nozzle has the basic work principle that a plurality of forward holes are uniformly formed in a certain circle, leaving away from the center for a certain distance, of the front end surface of the spray nozzle, a plurality of center axes of the holes are in the located plane of a certain tangent line of the circle and are distributed in a way of forming different angles with an axial line of the spray nozzle cap, and the projection of the axial lines of the holes in the front end surface is a tangent line of the same circle, so the jet flow has high tangential speed, and the efficient rock breaking is favorably realized; the jet flow dispersion is realized, the acting range is wide, and large-aperture holes are favorably formed; the spray nozzle cap realizes autorotation through the jet flow reaction, each hole is scanned along the self rail for completing the rock breaking, and the formed holes are more regular; the spray nozzle cap realizes the autorotation, and the self feeding of the spray nozzle is favorably realized. The backward spray nozzle provides the self-feeding force, and meanwhile, the autorotation of the spray nozzle cap can be controlled. The self-feeding rotary jet flow multi-hole spray nozzle has the advantages that the structure is simple, the efficient rock breaking can be realized, and large-diameter regular holes are formed.