| 摘要 |
A pump for pumping fragile articles including fish and glasses without damage includes a rotary pump having a plain disc impeller (32) disposed in a substantially cylindrical chamber (26) of a housing (24) with an inlet (28) into, or coaxial of the impeller into the housing and an outlet (30) from the periphery of the chamber, with the rotor arranged to provide a substantially unobstructed passage between the inlet past the rotor to the outlet of the pump. The method includes pumping fragile articles in a fluid medium by means of a disc impeller pump having an unobstructed passageway between the inlet and outlet of the pump. |
