Hydraulic diaphragm pump with leak compensation device

Details Hydraulic diaphragm pump with leak compensation device Hydraulic diaphragm pump with leak compensation device

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 43/06 (2006.01) F04B 49/22 (2006.01)

Patent

CA 2571024

A diaphragm pump including, in a body, a hydraulic control chamber disposed between a reciprocating piston and the diaphragm, the pump providing compensating means for leaks in the hydraulic chamber having a recharge duct leading to the hydraulic chamber through a compensating plug normally closed, driven at the opening by the diaphragm, the compensating plug thereof being supported the diaphragm on an open end of the control rod, the diaphragm being submitted to the effort of a supporting spring at the intake, engaging with the plug in its closed position, by pushing the open end of the control rod toward the diaphragm, this spring forming with plug a moving element without being deformed by the diaphragm during the intake overblow.

Pompe à membrane comportant, dans un corps, une chambre de commande hydraulique disposée entre un piston à mouvement alternatif et la membrane, la pompe prenant des moyens de compensation des fuites de la chambre hydraulique comprenant un conduit de réalimentation débouchant dans la chambre hydraulique au travers d'un obturateur de compensation normalement fermé, piloté à l'ouverture par la membrane, l'obturateur de compensation susdit étant man uvré par appui de la membrane sur une extrémité libre d'une tige de sa commande, la membrane étant soumise à l'effort d'un ressort d'assistance à l'aspiration, qui coopère avec l'obturateur susdit pour le rappeler dans son état de ferme-ture, en repoussant l'extrémité libre de la tige de commande en direction de la membrane, ce ressort formant avec l'obturateur un équipage mobile déplacé sans être déformé par la membrane lors d'une surcourse d'aspiration.

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