Self-contained air seal assembly for coal pulverizer
US5944270A · kind A · utility
10Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1998 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Jun 26, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C2015/002
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A bowl mill having a separator body, a grinding table and a plurality of grinding rolls for exerting grinding forces on material to be ground is provided with a plenum and a vane assembly for controlling the pressure conditions in the separator body. The vane assembly includes a plurality of vanes which rotate within the plenum to propel air from the plenum into an upper region of the separator body. This arrangement prevents or minimizes the penetration or migration of ground material into a lower region of the separator body of the bowl mill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.