| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump suppressing crevice corrosion between a rotary shaft and an impeller. SOLUTION: A seawater pump is provided with a cylindrical casing, a rotary shaft 20 provided in the casing and rotating in a predetermined direction, and an impeller provided on a tip of the rotary shaft 20. The seawater pump includes a conductive ring 41 provided on an outer circumference ring 41 provided on an outer circumference surface of the rotary shaft 20, a conductive abutment terminal 42 provided on the casing and moving forward and backward in relation to the conductive ring, and an urging mechanism 43 urging the conductive abutment terminal 42 to the conductive ring 41. COPYRIGHT: (C)2007,JPO&INPIT
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