Device for separating contaminants from fibre pulp suspensions
US6131742A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1998 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Oct 29, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21D5/026
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A separation device for separating contaminants from fiber pulp suspensions, preferably produced from waste paper, comprises a cylindrical screen number (4) and a rotor (7) arranged therein. An annular inlet passage (14) for incoming suspension surrounds a tubular wall (11), which extends from the screen member (4) coaxially with the rotor (7). According to the invention, a flow deflecting wall member (16) extends toward the rotor (7) to a position in which the wall member is axially in front of an open end (12) of the tubular wall (11) and radially inside the tubular wall. Furthermore, the wall member (16) with a cross-sectional area which is substantially less than the cross-sectional area of the annular inlet passage (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.