Method and device for cleaning dust-laden air
US5762689A · kind A · utility
Inventor
Key dates
| Filing date | Jul 12, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Jul 12, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2273/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The dust-laden air is led along a flow path through a porous filter wall (7) into a vacuum atmosphere (4') and from there, as clean air, over an acceleration stage (24) and discharged from the flow path. In order to equalize the resistance to flow in the flow path, the filter wall (7) is periodically cleaned with force pulses. In this connection, it is acted on, in time sequence, only section-wise by force pulses, namely when the filter-wall sections are in a position directed transverse to the vertical during the action of the pulses or are then brought into such a position. In this position, the dust-laden atmosphere lies--seen in the direction of flow--below the filter-wall section (7) and the vacuum atmosphere (4') lies above it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.