SINGLE PISTON FOUNDATION BAG-IN-BOX (BIB) PUMP

摘要

A pump includes a liquid housing having a liquid chamber with a piston/diaphragm assembly arranged therein that responds to a suction stroke and draws liquid into the liquid chamber, and responds to a pressure stroke and provides liquid from the liquid chamber; and a gas housing having a slide valve assembly separating first and second gas chambers. The slide valve assembly responds to a suction-to-pressure-force at the suction stroke conclusion, changes from a suction-to-pressure stroke state, provides gas from the first to second gas chamber through the slide valve assembly, and provides the pressure stroke so liquid passes from the liquid chamber; and responds to a pressure-to-suction-force at the pressure stroke conclusion, changes from the pressure-to-suction stroke state, provides gas from the second chamber through the slide valve assembly, and provides the suction stroke so liquid is drawn into the liquid chamber.

主权项

1. A pump comprising:
a liquid housing configured with a liquid chamber having a single piston/diaphragm assembly arranged therein to respond to a suction stroke and draw liquid into the liquid chamber, and configured to respond to a pressure stroke and provide the liquid from the liquid chamber; and a gas housing having a slide valve assembly that fluidicly communicates with a first gas chamber and a second gas chamber, the slide valve assembly configured to respond to a suction-to-pressure stroke force at a conclusion of the suction stroke, change from a suction stroke state to a pressure stroke state, provide gas from the first gas chamber to the second gas chamber through the slide valve assembly, and provide the pressure stroke so the liquid passes from the liquid chamber, and the slide valve assembly also configured to respond to a pressure-to-suction stroke force at a corresponding conclusion of the pressure stroke, change from the pressure stroke state to the suction stroke state, provide gas from the second gas chamber to atmosphere through the slide valve assembly, and provide the suction stroke so the liquid is drawn into the liquid chamber.