Combined mixer-aerator
US6276670A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F33/503
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention describes an apparatus which can be used both for aeration of water and mixing of water. The apparatus comprises a power source which can drive a helical propelling device, whereby the propelling device can operate in both directions of rotation. The propelling device is located completely below the surface of the water. Further, the apparatus is fitted with an additional circulation element which is positioned above the propelling device and at least partly below the surface of the water. The apparatus can also be fitted with further conventional elements such as a pump housing, a deflector and so on. The propelling device is affixed to the shaft below the surface of the water and at a distance from the surface of the water which is such that, as a function of the speed of rotation and the dimensioning of the propelling device, the distance between the top side of the propelling device and the surface of the water is sufficiently great to prevent air being sucked in when the propelling device is operating in the mixing mode but does allow the water which is pumped up to be dispersed across the surface of the water or the air sucked in to be driven into the water if t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.