Extended dwell reverse hydrocyclone cleaner
US5938926A · kind A · utility
2Cited by
12References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Sep 12, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04C5/081
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reverse hydrocyclone cleaner (10) for the centrifugal separation of lightweight contaminants contained in a suspension of papermaking fibers is formed with an elongated hollow body (12) of circular cross section which converges uniformly from a first inlet end to a second apex end, in which the ratio of the length of the conical body to its largest diameter is at least approximately 20 to 1 and defines an included angle of less than 3 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.