| 摘要 |
A multi-stage pump embodying a casing having two elongated end sections disposed on opposite sides of an intermediate discharge section and secured thereto, the end sections being of modular construction and embodying a plurality of axially aligned casing rings having impellers rotatably mounted therein, the casing rings being removably mounted relative to each other and, together with the impellers disposed therein, each comprising a respective stage for the pump, the end sections of the casing each having a passageway, including the interiors of the casing rings, for feeding liquid inwardly through the outer ends of the end sections of the casing and discharging the liquid into the aforementioned intermediate discharge section for discharge from the pump, during rotation of the impellers.
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