| 摘要 |
A fluid transfer apparatus has a pump housing, which is provided with a fluid intake opening, freely rotatable impeller with an integral base section and a fluid discharge opening. The impeller has several integral vane portions, which contain fluid channel routes within, extending radially from the base section. The liquid is drawn by the impeller into the pump housing, and enters the base section through fluid suction port of the impeller, and passes through the fluid channels of the vane portions to be discharged through the discharge opening of the pump housing.
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