Novel efficient rotary drilling rig

The invention discloses a novel efficient rotary drilling rig. The novel efficient rotary drilling rig comprises a drilling bit. The drilling bit comprises a drilling barrel. The outside of the drilling barrel is fixed with a spiral blade. The drilling barrel is equipped with multiple air inlets, three rows of first through holes and three lines of second through holes. A sliding unit shaped likea circular column capable of upwardly and downwardly is installed in the drilling barrel. An installation board is arranged in the drilling barrel and fixed with a circular column-shaped part. A cavity is arranged in the circular column-shaped part and internally provided with an injection pump. An air bag is fixed outside the circular column-shaped part and connected with the injection pump The inside of the drilling barrel is connected with a fan through a connecting support. The inner side wall of the drilling barrel is fixed with a first motor and a second motor. A motor shaft of the firstmotor is connected with a