| 摘要 |
<p>Parent patent described, a rotary disc turbine for aerating waste water. The disc rotates in a horizontal plane with its underside immersed in the water. A conical, coaxial boss is fixed pointing downwards, on the underside of the disc. The annular area between the boss and the edge of the disc is fitted with triangular blades each extending from the boss to the edge of the disc. In this invention behind at least some of the blades, in the direction of rotation, holes are formed through the disc so that the immersed, underside of the disc is in direct communication with the atmos. above the disc. As the disc rotates a suction pressure is produced behind each blade so that air is drawn down around the cone. pref. >=1 air intake hole is formed behind each blade. The outer end of each blade is pref. curved backwards in the direction of rotation the air intake hole(s) being positioned behind the curved section. The air intake holes greatly increase the efficiency of aeration by driving a cone of air coaxially downwards around the boss.</p> |
