Process for fractionating solid particles suspended in a liquid, in particular for treating paper-industry fiber suspensions
US4477359A · kind A · utility
1Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1981 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Jul 20, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F1/66
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for fractionating a suspension of solid particles in a liquid, of he type wherein said suspension is made to pass through a filtering screen, characterized in that said suspension is directed in a direction parallel to the longitudinal axis of an elastically deforming, flexible, perforated sleeve forming a filtering screen, and in that a sequence of high and low pressure is continuously created within this sleeve and travels at least predominantly opposite the direction of the suspension flow. The invention also applies to equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.