Bearing arrangement for a pump shaft of a pump for delivering media of different viscosities
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 26, 2000
Grant Date -
N/A
app pub date -
Mar 4, 1998
filing date -
May 24, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gear pump has a housing, a pump shaft supported in a housing wall by a bearing, and a pumping gear supported on the pump shaft which is operable to pump newtonian and non-newtonian liquid of different densities. A relief collection zone is arranged on a low-pressure side of the bearing for collecting leakage liquid passing through the bearing along the shaft. At least two return ducts or bores are provided which connect the collection or relief zone with a suction side of the pump in order to return the collected leakage liquid.
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