Valve actuator

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 31/524 (2006.01) E21B 34/02 (2006.01) E21B 34/04 (2006.01) F16K 31/04 (2006.01) F16K 31/12 (2006.01)

Patent

CA 2201661

A valve actuator is disclosed that can be selectively driven by hydraulic or electrical power, or both, in the alternative. A driving motor engages a drive which, through a clutching mechanism ultimately engages the actuator shaft. The actuator shaft has a spiral groove which is ultimately engaged by cammed spheresmoved into the groove, thus making the drive system which is retained longitudinally, drive the shaft upon rotation of the drive system. Upon release of energy to the driver, be it electrical, hydraulic, or pneumatic, the clutching system disengages so that the balls come out of contact from the spiral groove allowing a return spring to snap the valve shut by longitudinal movement of the actuator shaft.

Actionneur hydraulique et/ou électrique d'appareil de robinetterie. Un moteur d'entraînement engage un mécanisme d'entraînement qui, au moyen d'un mécanisme d'embrayage, engage en bout de ligne l'actionneur. L'arbre de l'actionneur comporte une rainure hélicoïdale qui, en bout de ligne, est engagée par des sphères à came déplacées dans la rainure, permettant ainsi au système d'entraînement à montage longitudinal de faire tourner l'arbre. Lorsque l'énergie électrique, hydraulique ou pneumatique est transmise à l'organe moteur, le système d'embrayage est désengagé, de sorte que les billes ne sont plus en contact avec la rainure hélicoïdale, ce qui permet au ressort de rappel de fermer d'un coup l'appareil de robinetterie par un mouvement longitudinal de l'arbre.

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