Actuator mechanism for pump sealing apparatus

Details Actuator mechanism for pump sealing apparatus Actuator mechanism for pump sealing apparatus

F - Mech Eng,Light,Heat,Weapons

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D

103/120

F04D 29/08 (2006.01) F04D 29/14 (2006.01) F16J 15/16 (2006.01)

Patent

CA 2037773

Abstract of the Disclosure 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 hoes 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.

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