Powder feed mechanism
US5768800A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1995 |
| Grant date | Jun 23, 1998 |
| Priority date | — |
| Expiry date | Jun 8, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J8/0015
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus for fluidizing a pulverulent material in a stream of fluidizing gas includes a membrane through which the fluidizing gas can flow but the pulverulent material cannot, a first fluidizing gas gallery on a first side of the membrane, a second fluidized pulverulent material gallery on a second side of the membrane, a passageway out of the second gallery for the removal of fluidized pulverulent material therefrom, and apparatus for generating a signal indicative of fluidizing gas pressure inside the second gallery and controlling fluidizing gas pressure in the second gallery in response to the generated signal. The passageway accommodates a conveyor having multiple conveying sections. At least a first of the multiple conveying sections is located adjacent an inlet opening of a housing for the conveyor. The first conveying section is generally coextensive with the inlet opening. A conveyor drive mechanism is selectively engageable with the conveyor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.