Gas and liquid contact apparatus – Contact devices – Rotating
Patent
1984-08-28
1985-09-10
Chiesa, Richard L.
Gas and liquid contact apparatus
Contact devices
Rotating
210219, 239219, 261120, 366279, 415 7, 416 85, 416188, 416234, 417 61, B01F 304
Patent
active
045405280
ABSTRACT:
Apparatus for mixing air with liquid, an aerator or oxygenator, comprises a motor or other power drive generally mounted in vertical position on a floating or a fixed structure, the motor having a shaft extending downwards through an opening in the center area of the float or fixed structure and bearing on its lower part a screw pump portion located in a cylindrical volute section just below the water level. When the apparatus is operating, the waste-water is sucked by means of the screw pump from the bottom of the body of liquid at which the apparatus is positioned and is pushed upwards in order to be diffused by means of a centrifugal impeller having outwardly curved blades, at least one of which extends downward to merge with a spiral shaped portion of a blade on the screw pump. Increased efficiency of the apparatus as an aerator is achieved, allowing the exit velocity from the centrifugal impeller to be approximately equal to, or even greater than, the upward velocity through the screw pump portion, by increasing the kinetic energy of the fluid during passage through the centrifugal impeller or at least minimizing losses of kinetic energy. The resulting high exit velocity from the centrifugal impeller produces higher aerator efficiencies than have been achievable with prior art devices.
REFERENCES:
patent: 2346366 (1944-04-01), Durdin, 3rd
patent: 2465671 (1949-03-01), Van Millingen et al.
patent: 3416729 (1968-12-01), Ravitts et al.
patent: 3669422 (1972-06-01), Nogaj
patent: 3735926 (1973-05-01), Ravitts
patent: 3871581 (1975-03-01), Dively
patent: 3911065 (1975-10-01), Martin et al.
patent: 4093401 (1978-06-01), Gravelle
patent: 4193951 (1980-03-01), Stanley
patent: 4468358 (1984-08-01), Haegeman
LandOfFree
Apparatus for mixing gas and liquid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for mixing gas and liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for mixing gas and liquid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1427722