Aerator

Details Aerator Aerator

1987-04-21

1988-09-27

Chiesa, Richard L.

Gas and liquid contact apparatus

Contact devices

Rotating

210219, 210220, 261DIG75, 366102, 416204R, 416223R, B01F 304

Patent

active

047740310

ABSTRACT:
An aerator (10) is disclosed which includes a hollow outer tube (12) and a hollow inner tube (14) rotatably supported therein. The inner tube is drivingly connected to a drive shaft (28) of the motor (18). A mounting flange (34) extends from a first end (36) of the outer tube and a mounting bracket (30) is interposed between the mounting flange and the motor. The mounting bracket and mounting flange are removably attached to the motor. A bearing mechanism which includes a bearing (44) and a ceramic wear sleeve (46) rotatably support a second end (40) of the inner tube adjacent the second end (42) of the outer tube. A propeller (20) is attached to the second end of the inner tube and has a pitch which is sufficiently high to move liquid past it at a velocity wherein cavitation of the liquid above the propeller is prevented at a preselected operating rotational speed.

REFERENCES:
patent: 2410429 (1946-11-01), Daman
patent: 2966345 (1960-12-01), Burgoon et al.
patent: 3778233 (1973-12-01), Blough et al.
patent: 3920779 (1975-11-01), Abele
patent: 3975469 (1976-08-01), Fuchs
patent: 4240990 (1980-12-01), Inhofer et al.
patent: 4280911 (1981-07-01), Durda et al.
patent: 4293169 (1981-10-01), Inhofer
patent: 4308221 (1981-12-01), Durda
patent: 4409100 (1983-10-01), Rajendren
O'Brien, T. P.; The Design of Marine Screw Propellers; pp. 25-33, 291, 292; Hutchinson and Co.; 1962.

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