Underground reverse rotational flow hedging cavitation device

The invention relates to an underground reverse rotational flow hedging cavitation device, and belongs to the field of underground plug removal in oil exploitation. Comprising a fastening end cover, an accelerating tube, an outer rotational flow piece, an inner rotational flow piece, a bottom end rotational flow piece and a shell, and the fastening end cover is located at the upper end of the accelerating tube; the accelerating pipe is located at the upper end in the outer rotational flow piece. The outer rotational flow piece is provided with a rotational flow blade I, a cavitation inner cavity and a stepped channel; the upper end of the outer rotational flow piece is in threaded connection with the fastening end cover; the inner rotational flow piece is located in the stepped channel, and the inner rotational flow piece is composed of an upper end sleeve, a second rotational flow blade and a lower end sleeve; the bottom end rotational flow piece is provided with a central conical through hole and a spiral c