我矿原有两台HP－Ⅲ型混凝土喷射机，该设备是靠旋转体的转动把物料卸下，用气吹送形成一段气一段料。上部固联的旋转板的表面常有颗粒，导致橡胶结合板磨损很快，使用不长时间旋转板就磨出环形槽，这样工作时其表面附着的颗粒更多，两者的磨损更快。一是难以密封，造成粉尘飞? I originally mine two HP-Ⅲ concrete jet machine, the device is rotated by the rotation of the body to remove the material, blowing gas to form a gas section of the material. The upper surface of the rotating plate often solid particles on the surface, resulting in rubber bonded plate wear quickly, use the plate does not rotate for a long time out of the annular groove, so that the surface of its work more particles attached, both wear faster. First, it is difficult to seal, resulting in dust fly?