| 摘要 |
A pump including a substantially cylindrical casing in which a radial-bladed impeller is rotatably mounted, has an axial inlet and its outlet is arranged tangentially of the casing periphery. A diffuser is arranged in the outlet passage, the diffuser comprising a cylindrical recess in communication with the pump casing, a diffusing section downstream of said recess which is divergent in the direction of fluid flow and an intermediate section which is convergent in the direction of fluid flow, the intermediate section having a convex periphery.
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