| 摘要 |
PROBLEM TO BE SOLVED: To provide an underwater pump usable for a drain pump equipment requiring a high pump head. SOLUTION: This underwater pump device is provided with a guide leg part 11 provided in a drain area 2, a lower stage underwater pump 4 arranged in the guide leg part 11 impossible to rotate around an axis of the guide leg part and possible to put in/out in the vertical direction thereof, and an upper stage underwater pump 4A arranged in series to the lower stage underwater pump 4 by placing it over the lower stage underwater pump 4 impossible to rotate around an axis of the guide leg part 11 and possible to put in/out in the vertical direction thereof. A lower flange 44 and an upper flange 45 of both the underwater pumps 4 and 4A are provided with semi-circular engaging recessed parts 46, 46, etc., to be removably engaged with guide palls 11A, 11A, etc., as structural members of the guide leg part 11 freely to slide. COPYRIGHT: (C)2004,JPO
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