Pulp screen
US4613432A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1984 |
| Grant date | Sep 23, 1986 |
| Priority date | — |
| Expiry date | Nov 1, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B1/55
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Separating equipment having a partially submerged vibratory screen in a screening device wherein oversized particles are induced to flow in a spiral direction outwardly from a central submerged area of the screen. A low velocity inlet manifold is employed centrally above the screen and a spray mechanism directs clearing spray to a peripheral area outwardly of the submerged portion of the screen. The screen is submerged by means of a chamber which extends outwardly above the lower most portion of the concaved partially submerged screen. The preferred embodiments specifically contemplates the screening of water borne wood pulp for the paper industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.