Screw conveyor and operation control method for the same
US7993572B2 · kind B2 · utility
0Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2005 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | May 9, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G43/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A screw conveyor for conveying an object to be conveyed, supported by a casing 1 by rotation of a screw 2, in which wear of a screw blade and decrease in conveyance efficiency are prevented without the need for extra power. Load on an electric motor 3 or the like for rotating the screw 2 or a value corresponding to the load is measured, and if the value is equal to or larger than a preset upper limit value, a screw shaft 2a is lifted up to increase a gap between an edge of the screw blade 2b and a bottom portion of the casing 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.