Butterfly valve actuation system for ported kiln
US6568653B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 2002 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Jan 15, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K1/221
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for supplying air to a ported rotary kiln involves the use of butterfly valves and a mechanical valve actuation system for introducing air into the kiln at axially and circumferentially spaced locations along the kiln length. The valve actuation system selectively and sequentially opens and closes the butterfly valves such that port air is introduced into the interior of the rotary kiln. The valve actuation system of the present invention is incorporated with a butterfly valve having a valve housing with an air passageway and including an air inlet and an air outlet, a valve disc rotatable within the housing to open and close the passageway, and a valve stem defining an axis of rotation and connected to the valve member for rotation therewith. The valve actuation system includes an assembly mounted on the valve stem to rotate the valve member between its open and closed positions. The valve actuator assembly includes an actuator base connected to the valve stem for rotation therewith, a lever assembly mounted coaxially with the actuator base and valve stem to freely rotate relative to the actuator base and valve stem, and a lost motion mechanism interconnecti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.