Apparatus for sealing rotary tubes
US6003874A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/903
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus for sealing a rotary tube drum of a furnace to another furnace component. Two concentric resilient metal ring segments are provided on a disk to comprise the sealing elements of the present invention. A plurality of springs arranged as a ring apply pressure to the disk and ring segments to ensure a consistent and self-adjusting seal between the joined components. Links located circumferentially about the disk limit lateral movement, yet allow axial movement, of the seal. It is thereby possible, according to the present invention, to provide a resilient seal between a rotary tube and another component of a furnace that yields a self-adjusting gas-impermeable seal between the mating components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.