The DSB type inverted umbrella impeller aerator is mainly suitable for the Carrousel oxidation ditch process in the biochemical treatment of urban domestic sewage and various industrial sewage, and it oxygenates the water body in the oxidation ditch. This equipment has a corresponding patent, and the patent number is: ZL 2020 2 2697919.4.

This device is a vertical shaft surface aeration device. The inverted umbrella-shaped impeller is directly connected to the output shaft of the reducer through a coupling. When the driving device drives the impeller to rotate, it vigorously agitates the water in the pool, continuously generates water jumps and circular flows, and creates negative pressure behind the blades to suck in air, which enhances the oxygenation of the sewage in the aeration tank. While oxygenating, a sufficient water flow velocity can prevent the sedimentation of activated sludge, fully mix the sewage and sludge, and promote the growth of microorganisms; it effectively meets the requirements for mixing, oxygenation, and flow pushing in the oxidation ditch process.

1. The driving device uses a vertical outdoor motor and a conical cylindrical gear reducer. The gears have hard tooth surfaces, featuring large bearing capacity, compact structure, small volume, light weight, and stable operation.

2. An elastic pin gear coupling is adopted, which can transmit large torque, has a small volume, allows a certain amount of radial and angular errors, and is easy to install.

3. The driving device is located on the civil engineering platform above the pool. The water mist splashed by the impeller has no effect on the motor, and the overall installation occupies a small area.

4. The oxygenation amount of the inverted umbrella-shaped impeller can be adjusted by changing the immersion depth of the impeller through adjusting the water level of the outlet weir, and the operation is simple.