| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin molded centrifugal pump, in which a clearance size between contact faces of an internal casing and a back casing is reduced, and a clearance size between a front end of a blade and an internal casing inner face opposed to a centrifugal impeller of the internal casing is set to be within a mounting size of a mechanical seal. SOLUTION: In the synthetic resin molded centrifugal pump, a synthetic resin molded internal casing 11 is disposed in a synthetic resin molded pump casing 1, and the internal casing 11 is disposed to face the synthetic resin molded centrifugal impeller 30 and is abutted on and fixed to the back casing 8. Dimensional accuracy of the internal casing inner face 11c facing the centrifugal impeller 30 and dimensional accuracy of a contact face 11b of the internal casing 11 abutted on and fixed to the back casing 8 are finished by machining so that the faces become highly accurate faces. COPYRIGHT: (C)2006,JPO&NCIPI
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