Device and method for improving grinding efficacy in gravity-fed grinding machines
US7946513B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 24, 2008 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Feb 11, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C13/286
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention regulates the delivery of feedstock to the fragmentation zone in a gravity-fed comminuting machine and reduces the ejection of feed materials by means of a rotating cylinder located at an offset position above the rotor. Rotationally mounted on an axis parallel to and above, but offset from, the axis of the rotor, this cylinder serves primarily as a striking surface, or anvil. The continual rotation of the anvil, in the opposite rotational direction as the rotor and with much slower rotational speed, assists in agitating the feed material, alleviating the problems of feed chute obstructions and feed aggregation. The cylinder forces the feed materials into contact with the rotor teeth through continuous rotation and provides a novel tooth design to improve efficacy and reduce wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.