The main structure of the impeller aerator is composed of electric motor, reduction box, impeller, strut, buoy and other parts. As far as the impeller is concerned, it is divided into an inverted umbrella impeller and a deep water impeller.

The working principle of impeller aerator

The impeller aerator has the functions of stirring water, increasing oxygen, mixing and aerating. These functions are performed simultaneously during the operation of the machine.

After starting up, the impeller sucks up the oxygen-depleted water in its lower part, and then pushes it out to turn the stagnant water into living water. The water under the impeller is strongly stirred by the blades and tubes, causing hydraulic jumps and waves on the water surface to form a water curtain that can be wrapped in air, which not only expands the surface area of ​​the gas-liquid interface, but also thins the double membrane between the gas and liquid. And it is continuously updated, which promotes the dissolution rate of oxygen in the air.

During stirring, the original harmful gases in the water, such as hydrogen sulfide, ammonia, methane, sulfur dioxide, etc., are desorbed from the water through aeration and discharged into the air. During the rotation of the impeller, a negative pressure is formed at the back of the water stirring pipe, so that the air can be sucked into the water through the water stirring pipe, and it is immediately stirred into micro-bubbles into the impeller pressure area, so it is also beneficial to improve the dissolution rate of oxygen in the air. Improve oxygenation efficiency.

Because the lower layer water is continuously lifted and mixed with the surface water, the surface water is constantly updated, and the surface water is continuously replenished to the lower layer due to the action of gravity. This function of the impeller aerator is very good, because it is not only conducive to breaking the vertical-uniformity of dissolved oxygen in the pool water, but also can give full play to the biological oxygenation effect.