Removing liquids from tanks
US5979471A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Nov 17, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B9/0936
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Apparatus for removing a liquid (2) containing suspendible solid matter from a tank (1) comprises a plurality of nozzles (47) located at the lower region of the tank. A pump (10) removes the liquid and ejects it through the nozzles (47) to cause resuspension of settled solid matter. When sufficient resuspension has occurred, the tank (1) is emptied by opening a valve to remove a portion of the liquid being transferred to the nozzles (47). The nozzles (47) are arranged as oppositely facing pairs ofjet nozzles at the lower end of a rotatable vertical pipe (46). The pump (10) is suspended by a cable (13) connected to a drum (19) which can be rotated to raise or lower the pump. A pump outlet (12) is connected to a flexible hose (27) which is wound around the drum (19) or around a separate drum (110). A movable containment flask (14) houses the drum (19) and accommodates the pump (10) when withdrawn from the tank (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.