Advanced drilling machine rotary blowout preventer

The utility model provides a rotary blowout preventer for an advanced drilling machine. The device comprises an outer shell and an inner cavity, the inner cavity is arranged in the outer shell; the outer side of the inner cavity is fixedly connected with the angular contact ball bearing and the deep groove ball bearing through the clamping spring and the check ring, the inner cavity of an integrated structure and the clamping spring, the angular contact ball bearing, the deep groove ball bearing and the check ring on the outer side of the inner cavity are arranged in the outer shell, and the outer shell and the outer end of the inner cavity are fixedly connected in the mode that the first bolt is screwed into the pressing ring. A drill rod sealing ring is arranged in an inner cavity of theinner cavity, and the drill rod sealing ring is fixedly connected with the outer end of the inner cavity in the mode that a second bolt is screwed into the pressing plate. The rotary blowout preventer has the advantages that