Roller mill for grinding particulate material
US8061641B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2007 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Sep 5, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C15/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A roller mill (1) for grinding particulate material such as cement raw materials, cement clinker and similar materials has a substantially horizontal grinding table (3) and a set of rollers revolving about a vertical shaft (5). The set of rollers includes a number of rollers (4) rotating about respective roller shafts (6) which are connected to the vertical shaft (5) via a hinged connection (7) which has a bearing shell (14) and a bearing journal (15) resting therein. The hinged connection (7) allows a free arcuate movement of the roller (4) in an upward and downward direction in a plane including the centerline (12) of the roller shaft. The set of rollers (4) is configured for interactive operation with the grinding table (3), and the bearing shell (14) of the hinged connection (7) has a diameter which exceeds that of the bearing journal (15) resting therein by a factor of at least 1 percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.