Screening device for a fiber slurry, and a backwash means therefor
US5341936A · kind A · utility
3Cited by
11References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1993 |
| Grant date | Aug 30, 1994 |
| Priority date | — |
| Expiry date | Jul 12, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/287
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hydrofoil in close proximity to an outboard surface of a rotatable slurry screen, and a hydrofoil in close proximity to an inboard surface of the screen, cooperate to create high and low slurry pressures at the surfaces which result in causing the slurry to surge through the screen to backwash the latter, thereby dislodging slurry-borne substances which tend to clog apertures in the screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.