Chopper pump with cutting inserts
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United States of America Patent
Stats
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Mar 24, 2015
Grant Date -
Oct 4, 2012
app pub date -
Jun 8, 2012
filing date -
Jul 29, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A chopper pump with scissoring back cutters and having a housing with an intake opening and an outlet opening, both in fluid communication with an internal chamber, and an impeller assembly positioned within the chamber, is disclosed. Generally speaking, the impeller assembly comprises an impeller attached to a rotatable pump shaft and includes a back shroud. An insert cutter positioned on a surface of the shroud opposite the impeller includes a cutting edge configured for shearing operation, while a stationary back plate having a surface adjacent to and facing the back shroud includes a cutting rib having a cutting edge configured for shearing operation. The insert cutter and cutting rib work jointly to create a cutting action as the impeller in the chamber.
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