| 摘要 |
A rotary vane pump includes a cartridge with a sleeve enclosing a set of rotary vanes on a shaft and end members supporting the shaft. A low pressure inlet to the vanes is formed in one side of each end member and a high pressure outlet from the vanes is formed in the other side of each end member. A pair deformable strips are affixed in grooves in the exterior surface of the cartridge which extend in an axial direction at positions that separate the low pressure inlet side from the high pressure outlet side. The cartridge is inserted into a housing having a fluid inlet port and a fluid outlet port to establish a first path between the fluid inlet port of the housing and the low pressure inlet of the cartridge and a second path between the high pressure outlet of the cartridge and the fluid outlet port of the housing. The deformable strips align the end members and the sleeve. Upon insertion of the cartridge into the housing, the deformable strips are compressed between the cartridge exterior surface and the housing to isolate the first path from the second path. Advantageously, the seal provided by the deformable strips eliminates internal leakage while aligning the cartridge parts.
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