发明申请
US20120209437A1 PUMP WITH SUCTION AND PRESSURE CONTROL FOR DRY PARTICULATE MATERIAL 有权
带干燥颗粒材料的抽吸和压力控制泵

PUMP WITH SUCTION AND PRESSURE CONTROL FOR DRY PARTICULATE MATERIAL
摘要:
A pump for particulate material includes a pump chamber wherein material flows into the pump chamber under negative pressure and flows out of the pump chamber under positive pressure. A plurality of pinch valves are provided to control flow of material into and out of the pump chamber. The pinch valves are operated independent of each other and of the pump cycle rate. A modular design of the pump is provided. A pump control feature is provided for air flow rate control during positive and negative pressure conditions.
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