Dry mix shotcrete machine design suitable for the job under difficult field conditions. Such as underground mines, tunnels, railways, roads, hydropower projects, rocky slope, underground engineering, chemical engineering and building maintenance gunning blast walls spray ideal equipment. First, pay attention to maintenance and repair gear: a class after work surface should be cleaned reducer adhesion Mixture and other debris. 2 frequently observed oil standard, should be promptly filled insufficient lubricant (No. 50 or No. 46 industrial gear oil, machine oil). After three cumulative work again with 260 should change the oil. Second, the tightness of maintenance and repair: key pieces of the seal plate and rotor liner is native must pay attention to their maintenance, to ensure that the failure does not always happen at work. Rotor pressing force applied to the clamping system sealing plate on the panel is not uniform distribution of the pressing force between the discharge port and the discharge port than is the largest, and the maximum pressure point with the continuous rotation of the rotor body, this difference in pressure by the clamping system to solve, so that when the machine running the joint surface leakage is extremely slight.