Reverse angle integrally counter-weighted trickle valve
US5740834A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Aug 2, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7903
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A trickle valve useful for removing solids from the bottom of a cyclone separator dipleg includes a valve seat and a reverse angle, integrally counter-weighted flapper plate pivotally mounted on the valve and closed against the valve seat which opens to release particulate solids built up in said dipleg before the solids build to a level greater than their angle of internal friction, thereby clogging the dipleg. The valve seat is at an angle of less than 90.degree. to the horizontal (i.e., 60.degree.) and the counterweight is flush mounted on the plate by welding as an integral part of the plate so that the plate can easily open to 90.degree.. This is useful with cyclones in catalytic crackers and particularly with secondary cyclones in which the fluidized solids loading is relatively light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.