Powder spraying stake machine drill head with bidirectional agitation

The utility model relates to a drill bit of a bidirectional mixing powder spraying ram machine. An outer drill bit connected with an outer drilling rod and an inner drill bit connected with an inner drilling rod are arranged, a sleeve pipe connected with the outer drilling rod is arranged on the outer drill bit, a mixing blade is fixed on the outer wall of the sleeve pipe, a bearing and a sealing device which are coordinated with the inner drilling rod are arranged on the inner wall of the sleeve pipe, a core pipe butt jointed with the inner drilling rod is arranged on the inner drill bit, an upper layer and a lower layer wing sheets are arranged on the outer wall of the core pipe, the lower part of the lower layer wing sheet is the drill point, the distance between the two layers of wing sheets is 20 to 30 centimeters, and a cement spaying opening is arranged on the core pipe between the two layers of wing sheets and near the lower layer wing sheet. Thread connection is adopted between the outer drill bit an