Multi-layer mutual shearing stirring drilling tool of drainage focusing mixing structure

The utility model relates to the technical field of stirring drilling tools, in particular to a multi-layer mutual shearing stirring drilling tool of a drainage focusing mixing structure, which comprises an inner stirring component, an outer stirring component, an airflow pipe, a powder flow pipe and a drill bit, a feeding channel is arranged in the inner stirring assembly; the airflow pipe and the powder flow pipe are arranged in the feeding channel in parallel; the drill bit is connected to the bottom of the inner stirring assembly and internally provided with a focusing cavity. The focusing cavity communicates with the bottom of the feeding channel, and a near-end nozzle and a far-end nozzle communicating with the focusing cavity are arranged on the left side and the right side of the drill bit. Focusing pieces are arranged at the bottom of the focusing cavity; a focusing concave face is arranged on the top face of the focusing piece. The utility model has the advantages that the drilling tool is provided