Valve assembly for cyclones or other abrasive applications
US4163726A · kind A · utility
Inventors
Key dates
| Filing date | Mar 30, 1978 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Mar 30, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04C5/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A valve assembly for controlling the flow of material in a duct such as a pipeline, outlet of a cyclone, nozzle and the like. The assembly is particularly suitable for controlling spiralling flows and includes a plurality of elongated valve members pivotally mounted at a first end to a support. Each valve member has at least two elongated and substantially planar sides extending from the first end to a second end. The two planar sides are joined to form a leading edge. The valve members are supported in an overlapping relationship and a mechanism closes the valve assembly by moving the second ends of the valve members toward each other. As the valve assembly closes, the leading edge of each valve member pivots about an axis and moves in a path along a plane extending radially from the axis of the valve assembly. The valve assembly is biased in the open position by the support means, and, as the valve assembly closes, the leading edge of each valve member in cooperation with the outwardly biasing force from the support means and reacting to the internal pressure drop across the valve forceably scrapes a side of an adjacent valve member in order to form a seal therewith. The leading …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.