Ball tube mill trunnion seal
US8448888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2008 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Mar 25, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C17/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A trunnion seal assembly for joining a stationary inlet/outlet box of a ball tube mill to a rotational interior of the ball tube mill includes an outer ring component configured to be mounted to an outer wall of the stationary inlet/outlet box. An inner ring component is joined to the outer ring component substantially concentrically with the outer ring component. A flexible pad seal is configured to be joined to the outer wall of the stationary inlet/outlet box proximate outer ring component. The pad seal includes a first annular sealing surface. A mill head extension ring configured to be joined to a rotational mill head is located proximate to and substantially concentric with the inner ring component. The mill head extension includes a second annular sealing surface sealingly engaged with the first annular sealing surface of the flexible pad seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.