Low pressure fluctuation apparatuses for blending fluids, and methods of using the same
US11266959B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2015 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Apr 19, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2101/58
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A low pressure fluctuation control apparatus comprises a liquid recirculation loop comprising a dip tube, a diaphragm or bellows type pump, a first regulator, a first flow meter, a junction, and a return tube. A back pressure controller is located in the return tube. In addition, the apparatus comprises a material supply line fluidly connected the liquid recirculation loop via the junction. A flow control system is located in the material supply line. The recirculation loop draws liquid from a supply container by the dip tube, and returns a portion of the liquid to the supply container by the return tube. The backpressure flow controller regulates the flow rate of the liquid, thereby steadying fluctuations in the liquid being supplied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.