Screw-centrifugal pump
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United States of America Patent
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Mar 31, 2009
Grant Date -
Jul 26, 2007
app pub date -
Nov 2, 2004
filing date -
Apr 7, 2004
priority date (Note) -
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Abstract
A screw-centrifugal pump (1) comprises a pump housing (3) having an inlet opening (3c) and also an impeller (2) arranged within the pump housing (3) and rotatable about an axis of rotation (2d) in a direction of rotation (4a). The impeller (2) has a spirally extending blade entry edge (2a) and a guide vane (5) projects into the interior space of the impeller (2) and is disposed in the region of the inlet opening (3c). A method of conveying a liquid permeated with solid additions using such a pump is also described and claimed.
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