| 摘要 |
PROBLEM TO BE SOLVED: To provide a canned motor pump solving a stress corrosion crack generated at a welded part of an end bell and a can by a mechanical structure even if a high quality material is not used. SOLUTION: In the canned motor pump 1, the can 6 is disposed on the inner periphery side of a stator 5, the end bell 10 is joined to an end opening of the can and a body member 4 and the impeller 33 is mounted to a rotation shaft 17 projected from the end bell. A first F seal member 25 is provided between a bearing 20 and a stator unit and a second F seal member 42 is provided between an end surface of the end bell and a casing 34. A joined part between both seal members is made to a closed area and the closed area is sealed such that a handling liquid is intruded into the closed area.
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