Device for the dosed conveying of powder to a powder processing unit
US5273584A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Apr 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G21/23
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The device for the dosed conveying of powder to a powder processing unit, particularly to a plasma spray device, comprises a volumetric dosing unit and a weighing unit which together allow a gravimetric powder dosing. The dosing unit includes: a rotatable dosing disc having a vertical axis of rotation; a drive unit mounted below said rotatable dosing disc; and powder feeding and withdrawal means mounted above said dosing disc. This dosing unit, having first and foremost a vertical extension, is fixed to a weighing platform which rests on a plurality of weighing cells. The drive unit is arranged below said weighing platform, in order to situate the center of gravity of said dosing unit at least approximately at the level of said weighing platform. This considerably reduces the liking of the dosing unit, as compared with a weighing platform arranged entirely above the dosing unit, thus allowing a gravimetric powder dosing with high accuracy and uniformity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.