Submersible aerator with counter-rotating diagonal flow impeller

Abstract

According to the submersible aerator, the counter-rotating oblique-flow impellers are oppositely arranged in a one-to-one and one-to-one manner and cooperatively run, the upper inverted impeller is used for blowing air and supplying air, the lower upright impeller is used for stirring water flow, firstly, the oblique contour of impeller blades is used for enlarging the water flow stirring area, and the water flow stirring speed is increased; the outer sides of the blades have guidance quality, water flow is conveyed to the outer side during rotation, and the formed maximum area is enlarged; secondly, a large number of vent holes are formed in the surface of a hub of the upper oblique-flow impeller, air blowing and air supply are more targeted, a small number of vent holes are formed in the same position of the lower oblique-flow impeller, in the process that bubbles rise along the surface, other substances in sewage are attached to the surface as little as possible, and the resistance reduction effect is achieved; air is output into water from the pipe and automatically emerges upwards, blades of an upper oblique flow impeller rotate to beat and press downwards, the lower impeller rotates to have the trend of lifting water flow upwards, a mixing area is formed, and the mixing efficiency of the air and the water flow is further improved.

Description

technical field [0001] The invention belongs to the technical field of submersible aerators. Background technique [0002] With the advancement of industrialization and urbanization, my country is facing two major problems of water shortage and water pollution. Sewage treatment equipment can effectively make up for the water pollution problems caused by people's lives and industrial production, thereby improving the ecological environment of rivers and lakes and the living environment of residents. The aerator is an important part of the sewage treatment equipment. By injecting air into the sewage, the contact between the organic matter, microorganisms and dissolved oxygen in the sewage is strengthened, and the aerobic respiration of the microorganisms is promoted to decompose the organic matter in the sewage pool and make it inorganic. So as to achieve the purpose of purifying water quality. [0003] At present, there are more than 40 patented products, such as: pump impe...

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Problems solved by technology

[0007] 2. The aerator only uses one impeller, and the outer surface of the impeller is a coherent entity. Long-term operation tends to make the surface gradually rough, and the resistance is getting bigger and bigger. The efficiency of the mixed water flow is reduced and it is not energy-saving;

[0008] 3. The blower air supply port of the aerator is placed directly below the impeller device, and the air bubbles are allowed to float up and mix with the water flow after being output vertically, so the aeration efficiency is not high

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