Improved coal mine injection machine

The utility model relates to an improved coal mine injection machine which is characterized by comprising a rack and a motor, a feeding chamber, a conveying chamber and a stirring chamber which are sequentially arranged on the rack, wherein the feeding chamber, the conveying chamber and the stirring chamber are communicated with each other; a rotating shaft of the motor is connected with a screw by a coupling; the screw is inserted into the feeding chamber and the conveying chamber; both sides of the bottom end of the stirring chamber are respectively provided with a gas inlet and a discharge port; and the gas inlet is connected with a high pressure gas source. The improved coal mine injection machine has the advantages that dry-mixed mortar is adopted to carry out wet blasting; dust is eliminated; the influence of the dust on the health of workers is enabled not to be generated; and materials are also more sufficiently stirred.