Concentrating apparatus with reverse osmosis membrane
US4929347A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | Jul 10, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D61/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This disclosure relates to a reverse osmosis apparatus comprising a reciprocating pump or pumps including a first cylinder chamber and a second cylinder chamber which is smaller in volume than the first chamber due to a piston rod extending through the second cylinder chamber, a feed conduit connected to the first cylinder chamber for feeding fluid thereto through a first one-way flow piping for fluid flow thereto, a reverse osmosis membrane module including an inlet and an outlet which collects permeate fluid, a second one-way flow piping connecting the first cylinder chamber with the reverse osmosis membrane module inlet for fluid flow to the inlet, a selector connecting the second cylinder chamber with the reverse osmosis membrane module outlet, and a drain conduit connected to the selector for draining concentrated fluid from the second cylinder chamber. The selector has a first position allowing the reverse osmosis membrane module outlet and the second cylinder chamber to communicate together and isolating the drain conduit. The selector also has a second position blocking the outlet allowing the second cylinder chamber and the drain conduit to communicate together. The select…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.