Proportional feeder for particulate solids
US4755061A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1987 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Nov 4, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the mixing of two or more particulate solid feeds in proportional ratios in which the unmixed solids are fed from separate bin receivers into a common mixture bin receiver having a generally vertical section, the present invention comprises an improved feeder in which a feeder means extends below the level of the solids in the common mixture bin. The improved feeder means of this invention comprises at least two nested conduits of differing horizontal cross-sectional areas. One or more of these nested conduits may be raised (or lowered) by an adjusting means to engage a conduit having a greater (or lesser) horizontal cross-sectional area enabling the proportions of particulate solids being fed to be changed as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.