| 摘要 |
PURPOSE:To facilitate installation by defining a certain space between the inner peripheral surface of a casing and the outer peripheral surface of a submersible pump, and providing casing inner projection parts which are inwardly directed at nearly the same height, on said casing itself. CONSTITUTION:Inner projection parts 15 are provided on a casing 3 itself and their height is set so as to keep a submersible pump 7 nearly coaxial with the casing 3. The inner projection parts 15 are provided in the position of the center of gravity close to a suction port 9, as well as on the top end of the casing 3. A flow-in water enters the suction port 9 through a part A to suppress heat generation by a motor part 8. Thereby, the submersible pump can be installed coaxially with the casing very simply.
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