Deep-water type down-umbrella aerator impeller

Abstract

The invention discloses a deep-water type down-umbrella aerator impeller. The deep-water type down-umbrella aerator impeller comprises an aerator impeller and an agitation impeller, wherein the agitation impeller is coaxially installed below the aerator impeller; the aerator impeller is installed at the lower end of a transmission shaft of a reduction box; the reduction box is driven by a motor; the aerator impellor comprises a center plate vertically connected to an impeller shaft; a plurality of aerator blades are arranged on the center plate; the upper ends of the aerator blades are obliquely connected with a pressurized-water plate; the lower end of the pressurized-water plate is connected to the center plate; a caster angle alpha is formed between each aerator blade and the radial direction of the impeller and a water-facing angle beta is formed between each aerator blade and the axial direction of the impeller; the lower end of each aerator blade is respectively collected in a base conical table; and the center plate, the aerator blades and the pressurized-water plate form the water-ejecting outlet of the impeller. By using the deep-water type down-umbrella aerator impeller provided by the invention, the water body flow and hydraulic jump height can be effectively improved, the agitated water is ejected through the water-ejecting outlet, and the formed water surface is fresher and can fully contact with air, thus reaching the aeration effect maximally; meanwhile, the agitation impeller can act as an axial flow effect, so that a liquid at the bottom of a deep groove can form an upward flow state and the bottom sludge can be prevented from settling.

Description

technical field [0001] The invention relates to environmental protection equipment in sewage treatment, in particular to an impeller of a deep-water inverted umbrella aerator. Background technique [0002] With the development of industry and the advancement of urbanization, environmental problems are very prominent, especially water pollution, which has brought more serious challenges to our country, which is already short of water resources. Therefore, it is urgent to increase water pollution control. Task. Most sewage treatment adopts biological process, and the key technology of this process is the aeration of biological pool, that is, oxygenation. In addition, due to the shortage of land resources, the biological pool has developed into a deep ditch type, which requires the aerator to take into account the stirring effect while aerating to prevent the sludge at the bottom of the deep ditch from settling. The vertical inverted umbrella type surface aerator has been wid...

AI Technical Summary

Problems solved by technology

[0003] At present, the vertical inverted umbrella surface aerator produced at home and abroad does not fully contact the water thrown by the impeller during operation, and fails to achieve a good aeration effect. The reason is that the structure of the aerator impeller The form is unreasonable, and it is more difficult to achieve the bottom stirring effect required by the deep-water biological pool

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