To provide a pump device for allowing easy stationary cleaning and disassembling cleaning, by exhibiting high self-priming performance and pumping performance.
A self-priming centrifugal pump includes large and small two vortex chambers, and separates gas from water, by causing self-priming water from the small vortex chamber to flow out to a self-priming water separation chamber having a delivery part of a large vortex chamber formed in an upward cylindrical shape, by generating a self-priming water circulating flow flowing to the large vortex chamber from the small vortex chamber in self-priming operation, by making a clearance between a start part of the small vortex chamber and an impeller outer peripheral part larger than a clearance in the large vortex chamber. The self-priming centrifugal pump is constituted so as to cause the self-priming water circulating flow from the small vortex chamber to flow in the self-priming water separation chamber from a swirling flow opening part formed in a shape to be rolled in from the tangent direction to the self-priming water separation chamber to generate a swirling flow for gas-water centrifugal separation, and to divide the self-priming water circulating flow on the way to the swirling flow opening part to flow out in the self-priming water separation chamber from a divided flow opening part separately arranged in a height in the vicinity of the swirling flow opening part or a higher position than that.
| JP4142865 | pump |
| JPS6153492 | SELF-PUMPING-TYPE TURBINE PUMP |
NISHI FUMIO
KAWAMOTO ISAO
KUMANAKA SHINJI
TAKAHASHI KENJI
| JP2008057398A | 2008-03-13 | |||
| JPS60238602A | 1985-11-27 | |||
| JPS283039B1 | ||||
| JPS5021682B1 | 1975-07-24 | |||
| JP2630725B2 | 1997-07-16 | |||
| JPH08501141A | 1996-02-06 | |||
| JP2002102628A | 2002-04-09 | |||
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| JP2000506441A | 2000-05-30 | |||
| JPS341842B1 | ||||
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| JP2008057398A | 2008-03-13 |