Emergency running apparatus in a filtering apparatus
US4081376A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Jul 8, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D35/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A settling layer filtration system having at least one settling layer arranged in a vertical direction with the liquid to be filtered being delivered thereto by means of an electric powered filter pump which is protected against the collapse of that settling layer in the event of the occurrence of an emergency condition which would interrupt the flow of liquid therethrough by the provision of an emergency standby operating means for maintaining during the emergency condition a minimum flow of liquid through said settling layer sufficient to maintain it in vertical working position. The emergency operating means includes a water turbine having a driving connection with pump means delivering liquid to the settling layer, means for sensing the occurrence of an emergency condition, and means operated in response to the sensing means for activating the water turbine to drive the pump to deliver liquid at a flow level at least sufficient to maintain the settling layer in its working orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.