Vertical-drop grain aspirator
US4865721A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1987 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Nov 5, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B9/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An aspirator and method for separating fines and foreign matter from dry, free-flowing granular material, characterized by a vertical drop of the unclean granular material in a separation plenum into an opposing upward air stream and a plurality of vertically-spaced, horizontally-extending transverse air streams. Suspended fines and foreign matter are conducted from the granular material in the separation plenum through a plurality of vertically-spaced outlets into a manifold for discharge from the aspirator. The apparatus and method avoid bunching, recompaction and congregating of the granular material during the separation process, to thereby increase throughput and optimize separation efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.