| 摘要 |
A compact, modular dosing pump system that is capable of microdose and macrodose volume flow rates, reduces or eliminates the need for additional flow control components such as temperature and pressure sensors, and utilizes a wider operational flow range than existing systems while maintaining the level of accuracy and precision exhibited by conventional dosing pump systems is provided. The dosing pump utilizes a pump and flow circuit, and a control system may be used to deliver a range of fluid volumes. The flow circuit utilizes a networked system of fluid paths and valves to route fluid through the dosing pump system in response to a pressure differential between fluid inlet and fluid outlet ports, while the controller monitors and controls the operation of the system. |
| 主权项 |
1. A pump system comprising:
a fluid pump having an pump input and a pump output in fluid communication with a fluid flow circuit wherein said flow circuit comprises a circuit fluid inlet, a bypass loop, an outlet branch and a circuit fluid outlet, wherein said bypass loop includes, an input flow channel in fluid communication with said circuit fluid inlet and said pump input, a bypass loop valve, an output flow channel in fluid communication with said pump output and said bypass loop valve, and a fluid return channel in fluid communication with said bypass loop valve and said input flow channel; said outlet branch includes, an outlet branch valve, an outlet branch flow channel in fluid communication with said output flow channel of said bypass loop and said outlet branch valve, and a fluid exhaust channel in fluid communication with said outlet branch valve and said circuit fluid outlet; wherein at least one of said bypass loop valve and said outlet branch valve includes an orifice size selector, said orifice size selector having at least two differently sized orifices; and wherein said orifice size selector comprises a plurality of orifices arranged in an array such that each of the plurality of orifices may be moved into alignment with at least one of said bypass loop valve and said outlet branch valve so as to provide a fluid pathway through the orifice size selector and into at least one of said bypass loop valve and said outlet branch valve. |
