| 摘要 |
A aeration device designed for use in catfish ponds has a support base on which an electric motor and a gear reduction unit are mounted. A cylindrical hub attached for rotation with an output shaft of the gear reduction unit has four evenly spaced radially extending rods. A hollow cylindrical cup is mounted transversely on the free end of each of the rods. The openings of each cup face in the same rotational direction. Four brace struts extend between the radially extending rods, forming a square. In use, the supporting base is situated in a catfish pond, with the motor and gear reduction unit disposed above the water level. At the extreme downward position, each cup will extend about two feet below the water line. As each cup passes through the water, the cup is filled with water which is then carried around a circular arc and dumped from the cup as the cup moves around the arc back toward the surface of the water. In this manner, the water is splashed and aerated before being returned to the water. The cup is divided into two compartments by a central partition. One of the compartments is provided with a spray head and a filling notch.
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