Screw-driven single-acting double-pipe impact rotary drilling tool

The invention discloses a screw-driven single-action double-pipe impact rotary drilling tool in the technical field of single-action double-pipe drilling tools, which comprises an inner pipe joint, an impact hammer body, an inner spline joint, a jacking cylinder, a screw pump rotor, a bearing seat, a jacking seat, an outer pipe joint and an upper joint, the upper connector, the internal spline connector, the jacking base and the outer pipe connector are clamped from top to bottom to form a sealed cavity which is communicated with one another, a screw pump rotor drives the punch hammer body through flushing fluid for drilling, downward impact is generated on the outer pipe connector, the mandrel and the inner pipe connector can be separated through the single-acting bearing, transmission is achieved through the single-acting bearing, and the screw pump rotor is driven by the single-acting bearing. The inner pipe pressing head is effectively prevented from rotating, a rock core taken out through coring drilling