| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump apparatus allowing easy maintenance of the filter for sludge removal on the suction side of the pump and requiring no running costs. SOLUTION: A liquid outlet 23 of a swing type spring filter 12 is connected to a liquid suction inlet 26 of a reversible centrifugal pump 11, and a sludge pot 13 for the spring filter is connected to the lower part of the filter casing 22 of the swing type spring filter 12. An liquid inlet 42 of a cyclone filter 14 is connected to the liquid discharge outlet 40 of the centrifugal pump 11, and a sludge pot 15 for the cyclone filter is connected to the lower part of the filter casing 43 of the cyclone filter 14. COPYRIGHT: (C)2009,JPO&INPIT
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