High pressure metering valve

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

Patent

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F16K 11/074 (2006.01)

Patent

CA 2525100

A bi-directional metering valve assembly includes a valve block (46) defining a first port (100) that receives hydraulic fluid from a source, and a second port (98) that directs hydraulic fluid to a load. A rotatable valve member (74) defines first (116) and second (114) apertures in an axial face, communicated by a channel (118) that may be placed in selective communication with the first (100) and second (98) ports, respectively, to direct hydraulic fluid from the source to the load. At least one metering sealing assembly defines a flange (132) that is sized to completely overlap and seal the correxponding aperture (114, 116). The valve member is operable to control the direction of fluid flow, and make fine adjustments to the hydraulic fluid flow rate.

L'invention concerne un ensemble soupape de dosage bidirectionnelle pour l'orientation sélective de fluide hydraulique haute pression vers une charge. L'ensemble comprend un bloc soupape qui définit un premier accès recevant le fluide depuis une source, et un second accès orientant le fluide vers une charge. Un élément de soupape rotatif définit des premier et second orifices dans une face axiale pouvant être placée en communication sélective avec les premier et second accès, respectivement, pour l'orientation du fluide depuis la source vers la charge. Au moins un ensemble de dosage étanche assure l'interface entre le bloc soupape et l'élément de soupape. L'ensemble étanche comprend un joint entourant l'un des deux accès et définissant une bride de dimension qui chevauche entièrement l'orifice correspondant et qui le rend hermétique. L'élément de soupape peut être activé pour contrôler l'orientation du flux de fluide et conduire des réglages fins sur le débit de ce flux.

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