Flow divider

F - Mech Eng,Light,Heat,Weapons – 15 – B

Patent

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F15B 13/02 (2006.01) F16K 11/07 (2006.01)

Patent

CA 2585038

A flow divider includes a spool (52) for distributing fluid from a supply flow path (17) to priority (18) and surplus (19) flow paths. First and second surplus restrictions (24,27) vary flow rate in accordance with the movement of the spool and restrict the flow rate to the surplus flow path respectively from first and second supply passages. The second surplus restriction (27) is formed to restrict the flow rate in at least two steps. The spool (52) includes a cross-sectional area changing portion located at a position corresponding to the second surplus restriction. Therefore, the circuit structure is prevented from becoming complicated and the fluid force acting as a spool urging force is suppressed.

Un diviseur de flux comprend un tiroir (52) qui répartit le fluide arrivant d'un chemin de flux d'alimentation vers des chemins prioritaire (18) et secondaire (19). Des première et deuxième réductions (24, 27) du chemin secondaire font varier le débit en fonction du mouvement du tiroir et réduisent le débit vers le chemin secondaire respectivement depuis le premier et deuxième passages d'alimentation. La deuxième réduction (27) du chemin secondaire est formée pour réduire le débit sur au moins deux étapes. Le tiroir (52) comprend une partie modifiant la section, située à un endroit correspondant à la deuxième réduction du chemin secondaire. Par conséquent, la structure du circuit ne peut devenir complexe et la force du fluide oeuvrant comme force actionnant le tiroir est supprimée.

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