Dual dispensing valve assembly

B - Operations – Transporting – 67 – D

Patent

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Details

B67D 7/70 (2010.01) B05B 11/00 (2006.01)

Patent

CA 2259649

A dual valve assembly (26) for use with a dispensing apparatus including a pump (18) and a plurality of fluid containers (12, 14). The valve assembly (26) includes a housing containing an elastomeric regulator (36) wherein the regulator (36) includes a diaphragm portion (56) for controlling fluid flow through the housing, and a vent valve structure for opening and closing air passages (100, 102) to supply air to the containers (12, 14). The diaphragm portion (56) includes an orifice (68), and the diaphragm portion (56) is movable into and out of contact with a seat (62) defined on the housing to control fluid flow from the containers and through the orifice during actuation of the pump (18). In addition, the vent value structure includes a pair of vent membranes (108, 110) which open vent openings (100, 102) to the containers (12, 14) in response to negative pressure applied from the pump (18).

Un ensemble à double soupape (26) est utilisé avec un appareil de distribution comprenant une pompe (18) et plusieurs conteneurs de fluide (12, 14). L'ensemble à soupape double (26) comprend une enceinte contenant un régulateur élastomère (36) qui possède une partie diaphragme (56) pour réguler l'écoulement du fluide passant à travers l'enceinte, et une structure à soupape d'évent pour ouvrir et fermer les passages d'air (100, 102) afin d'alimenter en air les récipients (12, 14). La partie diaphragme (56) possède un orifice (68) et elle est mobile pour entrer en contact avec un siège (62) défini sur l'enceinte afin de réguler l'écoulement du fluide provenant des récipients et passant par l'orifice lorsque la pompe (18) est actionnée. De plus, la structure à soupape d'évent comprend une paire de membranes d'évent (108, 110) qui ouvre des orifices de mise à l'évent (102) de récipients (12, 14) suite à une pression négative appliquée par la pompe (18).

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