Ceramic filter modules in series with piston backwash
US4957625A · kind A · utility
29Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Apr 27, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/92
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for filtering a liquid, includes supplying a starting liquid from a container to a passage of a pipe-like filter set in a filter casing, passing the starting liquid through the passage of the filter thereby to produce the filtrate, sending back the unfiltered liquid to the container, and back washing the filter by means of a hydraulic pressure device having a piston movable in a cylinder in such a manner that the filtrate is moved by the piston of the hydraulic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.