Method and apparatus for determining powder flow rate and transfer efficiency of powder spray system
US4586386A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1984 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | Oct 29, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pneumatic powder collector for determining the transfer efficiency of a powder spray system comprises a funnel for directing powder into a sealed collection chamber. A vacuum is drawn on this chamber by an air flow amplifier having an air flow inlet open to the chamber and an exhaust open to atmosphere. Contained within the chamber there is an air permeable powder collection bag having an inlet open to the funnel so that air entrained powder drawn into the funnel is collected in the bag. The amount of vacuum drawn on the chamber is controlled by a pressure regulator through which high pressure air is supplied to the air flow amplifier so that the vacuum is just sufficient to pull all powder sprayed by a spray gun of the spray system into the chamber without increasing the flow of powder from the gun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.