Post mix dispenser

摘要

A post mix liquid dispensing system for combining a concentrate with a diluent including an arrangement in which the diluent is self-contained within the system, independent of any external diluent source such that the system is portable with respect to the diluent and concentrate. A concentrate pump having a pair of rollers cooperating with a rotor rotatably driven within a fixed race by a motor and spring biased into and out of clamping engagement with a conduit carrying the concentrate forces concentrate through the conduit during rotation of the rotor. The concentrate pump interacts with a diluent pump to transfer concentrate and diluent into a mixing valve for dispensing of a food or beverage of uniform consistency.