| 摘要 |
An improved pump assembly includes intake passage which conduct fluid from a reservoir assembly to radially opposite sides and opposite ends of a rotor assembly. To provide controlled reduction in velocity and corresponding increase in pressure as the fluid flows through intake passages toward the rotor assembly, the intake passages increase in cross sectional area in the direction of flow. A bypass valve directs a flow of fluid from the pump assembly to an auxiliary external system when a main external system is shut off. The rate of fluid flow to the auxiliary and main external systems is maintained at a predetermined maximum rate by a flow control valve assembly which diverts fluid from a discharge passage to the intake passages in response to a predetermined pressure drop as fluid flows through a nozzle at the predetermined maximum rate. When the pump assembly is to be used in different environments, the direction in which the pump assembly is adapted to be driven can be reversed by changing the orientation of the rotor assembly and end plates of the pump assembly. This adaptability of the pump assembly to different environments is enhanced by the reservoir assembly which can be rotated to any one of a plurality of positions relative to the pump assembly. |
