Pump impeller
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United States of America Patent
Stats
-
Sep 30, 1986
Grant Date -
N/A
app pub date -
May 28, 1985
filing date -
Jun 6, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An impeller in a pump, in particular a sewage pump, the passage of which is required to have a given transmission capacity for transmitting the impurities present in the sewage water. When small volumetric flows are being pumped at great delivery lift, it would be advantageous, with a view to achieving good efficiency, to make the passage narrower than the inlet aperture, but up to date it has not been possible to do this without impairing the transmission capacity. In the impeller of the invention, this has been solved in that for achieving sufficient transmission capacity one wider point has been provided in the passage, located between the inlet and outlet margins of the impeller blade.
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