Coal gun convenient to control

The coal lance convenient to control comprises an outer pipe and an inner pipe, the inner pipe is connected to an inner cavity of the outer pipe in a sliding mode, a first sliding groove is formed in the top of the inner cavity of the outer pipe, and a lead screw is rotationally connected between the left side wall and the right side wall of the inner cavity of the first sliding groove. A first sliding block is in threaded connection with the right side of the outer side wall of the lead screw, the first sliding block is fixedly connected to the left side of the top of the inner pipe, a first bevel gear is fixedly connected to the left side of the outer side wall of the lead screw, a rotating shaft rotates on the left side of the top of the outer pipe, and the bottom end of the rotating shaft penetrates through the outer pipe and extends to an inner cavity of the outer pipe; the coal gun convenient to operate and control is reasonable in structural design, the coal injection position of the coal gun can be ra