Seal-flushing in centrifugal-pumps, improved methods and apparatuses
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United States of America Patent
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Nov 7, 1989
Grant Date -
N/A
app pub date -
Sep 18, 1987
filing date -
Sep 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is an improved method of centrifugal pump impeller-shaft seal-flushing; comprising the step of supplying pressurized seal flush fluid to a centrifugal pump impeller-shaft seal within an operating centrifugal pump: (a) axially, from the rear; (b) radially, circumferentially evenly; and (c) circumferentially, inclined forwardly at a positive acute angle from parallel-to-axial. Thus resulting in greatly prolonged seal life.
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