Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Dynamically created seal
Patent
1991-03-05
1993-11-16
Kwon, John T.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Dynamically created seal
4151733, F16J 1516
Patent
active
052617866
ABSTRACT:
A centrifugal pump of the hydraulic sealing type has a novel and improved sealing apparatus for establishing a hydraulic seal and limiting the flow of liquid from a pump casing into a reservoir or seal housing at one end of the pump casing, and a valve assembly in the seal, housing has a valve member normally urged into engagement with the seal housing to isolate liquid in the seal housing from the casing by washer-like spring elements. When the pump is activated and brought up to speed, centrifugal force-responsive pivot members will impart sufficient opening pressure to overcome the resistance of the spring members when the pump approaches operating speed to move the valve member away from sealed engagement with the seal housing; and when the speed is reduced below the operating speed level the spring elements will rapidly undergo deflection to cause the valve member to return to a closed position.
REFERENCES:
patent: 1976532 (1934-10-01), Wilfley
patent: 2581504 (1952-01-01), Wilfley et al.
patent: 2660487 (1953-11-01), Wilfley
patent: 3137237 (1964-06-01), Zagar et al.
patent: 3402671 (1968-09-01), Wilfley et al.
patent: 3652180 (1972-03-01), Choquette et al.
patent: 4915579 (1990-04-01), Whittier et al.
A. R. Wilfley & Sons, Inc.
Kwon John T.
Reilly John E.
LandOfFree
Actuator mechanism for pump sealing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Actuator mechanism for pump sealing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Actuator mechanism for pump sealing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-18532