... pressure pneumatic conveying equipment (suction nozzle, hydraulic suction arm, separation unloading device, roots blower or vacuum pump), Positive press pneumatic ... rated current.(2) Motor working current and the blower vacuum pressure are reliable and stable; pressure control degree of ... 100, 150, 200, 300,400,500 t/h.The Stretching length of the suction arm can be chosen according to the production ...