Device for regulating the output of a verticle-axis centrifugal pump
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United States of America Patent
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Nov 10, 1998
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N/A
app pub date -
Apr 29, 1997
filing date -
Apr 30, 1996
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Abstract
A suction port (2a) of the pump is submersed in an open-top cylindrical casing (3) coaxial to the impeller axis and equipped with a liquid inlet pipe (4) tangentially discharging the liquid into the casing in the direction of the impeller rotation. The lower portion of the cylindrical casing wall (3d) and/or the liquid inlet pipe (4) is designed in the form of a channel or pipe following a radius with center inside the casing, so that the swirling flow generated inside the casing (3), and the inlet flow that enhances said swirling flow, are concentrated and their liquid levels dynamically forced into a vertical level.
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