Gear Pump
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United States of America Patent
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N/A
Issued Date -
Apr 18, 2013
app pub date -
Dec 5, 2012
filing date -
Jul 2, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A gear pump is described with a plurality of gear wheels which intermesh in order to deliver a pumping medium, and are rotatably held in a pump case and deliver a pumping medium from a priming zone into a delivery pressure zone of the pump case. One of the gear wheels is driven by a pump shaft which protrudes with a coupling end out of the pump case. In order to seal the pump case, a shaft sealing ring is held around the circumference of the pump shaft, wherein according to the invention, in order to avoid material deposits, the shaft sealing ring is associated with an interior flushing chamber on the circumference of the pump shaft, the flushing chamber being connected to the delivery pressure zone of the pump case by a feed channel in the pump case.
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