Sand and blowing components mainly by sand spray guns, air guns, valves, exhaust valves, air supply, filters and other components. The pressure in the control line to ensure the intensity of the sandblasting, pressure value larger the higher the speed of the Jet stream, sandblasting efficiency higher, workpiece surface roughness, on the contrary, a relatively smooth surface. Sand valve adjustment valve and out of the on-time control and sandblasting time blowing time, to ensure that the effect of sand blasting, sandblasting and blowing off time can be set in the touch screen.