Guard rings for vertical shaft impact crusher
US4659026A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1986 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Jan 31, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A vertical shaft impact crusher having a rotor mounted for rotation about a vertical axis on a vertical shaft supported by a central bearing, and an impeller mounted on that shaft so that rock fed into the crusher is caught by the spinning impeller and thrown against an adjacent breaker means, and is broken; wherein the crusher is provided with a guard ring means and a dust shell means mounted telescopically and concentrically to each other with the vertical shaft to restrict the entrance of rock dust and rock fragments into the rotor shaft and bearing; and an annular flexible curtain mounted in spaced relationship to the interior of the crusher housing to dissipate material velocities and reduce operational noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.