| 摘要 |
A multi-stage flexible-vane impeller pump has identical pumping chambers 101, 102, 103 between closure plates 104, 105, 106, 107. A single shaft 110 carries identical impellers 112, 113, 114. The inlet to the first chamber is via passageway 115 communicating with inlet port 116. Ports in plates 105, 106, 107 may be angularly displaced by 120 DEG or 180 DEG and the outlet from chamber 101 is the inlet to chamber 102, the outlet from chamber 102 being the inlet to chamber 103. Outlet port 118 from chamber 103 communicates with the pump outlet passage 117. In another construction (not shown) the inlets and outlets of the chambers are via radial fronts which communicate externally. <IMAGE> |
