A liquid pumping system

摘要

A liquid outlet link assembly (10) is provided for liquid delivery output rates below 10 Ál per minute so as to smooth out the flow from a positive displacement pump(1) which has an immediate step pumping rate which is relatively substantially larger than the delivery rate required through liquid outlet means (20). Essentially, this liquid link assembly has a bubble of air (15) or some other pressure stabilizing means which initially contracts on the pump (1) such as a syringe pump operating to raise the liquid pressure in the liquid outlet link assembly (10). The expansion increases the available volume in the liquid outlet link assembly (10) and then gradually expands over time, allowing a steady output rate through the link assembly.