Hydraulically driven machine improvement

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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F04B 43/113 (2006.01) F04B 9/105 (2006.01)

Patent

CA 2718631

A hydraulically driven diaphragm pumping machine comprises a plunger (6) that is slidably mounted in a middle part of the inside of the machine's hydraulic cylinder (5) between first and second bellow-like diaphragms (4,10). Ends of the plunger (6) are connected to the first and second bellows-like diaphragm (10) to define respective first and second outer annular spaces (a) that are independent of one another, and the pressure of fluid in the first annular space (a) is independent of the pressure of fluid in the second annular space (a). The machine may also comprise a hydromechanical switch for commutating a valve (102) to automatically control the supply of hydraulic fluid to the hydraulic cylinder at given moments of the machine's cycle.

L'invention porte sur une machine de pompage à membrane hydraulique qui comprend un piston (6) qui est monté de façon coulissante dans une partie médiane de l'intérieur du cylindre hydraulique (5) de la machine, entre des première et seconde membranes de type soufflet (4, 10). Les extrémités du piston (6) sont reliées aux première et seconde membranes de type soufflet (10) pour définir des premier et second espaces annulaires externes respectifs (a) qui sont indépendants l'un de l'autre, et la pression du fluide dans le premier espace annulaire (a) est indépendante de la pression du fluide dans le second espace annulaire (a). La machine peut également comprendre un commutateur hydromécanique pour commuter une soupape (102) afin de commander automatiquement la distribution de fluide hydraulique au vérin hydraulique à des moments donnés du cycle de la machine.

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