Method of cleaning drums
US5149379A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1990 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Oct 25, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0525
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a method of cleaning the outer circumferential surface of a drum by spraying a cleaning fluid thereon and a device for cleaning drums. The cleaning fluid is circulated and is cleaned with a filter during circulation. The drum is cleaned with a cleaning fluid passed through a primary filter having a porous structure at high pressure, after which the drum is cleaned with a cleaning fluid passed through a finishing filter having a fine porous structure. A device for cleaning drums switches a circulating passage for cleaning fluid so that the cleaning fluid can pass through the primary filter at high pressure to spray on the outer circumferential surface of the drum. Also, the device allows the cleaning fluid to pass through the finishing filter at low pressure to spray on the outer circumferential surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.