Vertical shaft pumping system with lubricant impeller arrangement
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United States of America Patent
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May 7, 2013
Grant Date -
May 10, 2012
app pub date -
Nov 10, 2010
filing date -
Nov 10, 2010
priority date (Note) -
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Abstract
A vertical shaft pumping system includes a hollow shaft with an inner bore, an inlet end and an outlet end, the outlet end with at least one liquid distribution hole. It further includes an impeller positioned at the lower inlet end of the shaft, with a cylindrical base portion with a lower end, a central hole for drawing fluid into the shaft, and a plurality of teeth extending upwards from the cylindrical base portion and extending radially from the central hole to the outer cylindrical circumference for increasing tractive force of liquid in the shaft when the impeller and shaft are rotating; and a motor for rotating the shaft with the impeller to centrifugally pump a liquid vertically in the shaft from the lower inlet end to the upper outlet end.
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