Liquid dispensing system with enhanced mixing

摘要

A dispense apparatus and system for dispensing suspensions or emulsions. The system ensures uniformity of distribution of the dispersed phase within the continuous-phase liquid by moving the fluid through the dispense cartridge, such as with a continuous or pulsating flow. In one embodiment, peristaltic pumps (1,2) are positioned upstream and downstream of the dispense cartridge (3), in fluid communication with and forming a single loop with a fluid source (4). Circulation between the fluid source (4) and the dispense cartridge (3) is maintained. In a second embodiment, a pump (5) circulates fluid into and out of the dispense cartridge (3) and is also in fluid communication with a fluid source (4) such as with a pinch valve (6) to allow proper filling of the dispense cartridge (3) from the fluid source (4). In a third embodiment, a reversing pump (8) is placed between the dispense cartridge (3) and fluid source (4) to continually or continuously pump fluid into and out of the dispense cartridge (3).