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Vane wheel of surface aerator

A surface aerator and impeller technology, applied in water aeration, sustainable biological treatment, water/sludge/sewage treatment, etc., can solve problems such as low power efficiency, disordered flow direction, high energy consumption, etc. Achieve the effect of reducing power consumption cost and improving power efficiency

Active Publication Date: 2009-09-30
中冶生态环保集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the blades can only push and rotate the water, the impact of the blades on the water causes bubbles to break up and the flow direction is disordered. When the dissolved oxygen on the surface reaches a certain value, it is difficult to increase it, resulting in poor aeration effect and low power efficiency. Generally, it can only reach 1.6-2.4kgO 2 / kWh, the highest can only reach 2.5-2.6kgO 2 / kW·h, so that the cost of energy consumption in the cost of urban sewage treatment in my country remains high

Method used

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  • Vane wheel of surface aerator
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  • Vane wheel of surface aerator

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Embodiment Construction

[0014] according to figure 1 , figure 2 As shown, the impeller of the surface aerator is mainly composed of an impeller body and blades 4. The impeller body is in the shape of an inverted umbrella and is composed of a skeleton supporting surface 2 and a cone 3. The top angle of the cone 3 is 120-150 degrees, and the middle part With a central through hole 1. The blades 4 are radially fixed on the concave and convex surfaces of the cone 3 of the impeller body, and can be fixed by welding, riveting or bolts. The cone 3 of the impeller body is radially uniformly distributed with water ejectors 9 which can be fixed on the concave surface of the cone 3, can also be fixed on the convex surface of the cone 3, or embedded in the cone. .

[0015] A gas-liquid mixing tube 7 is uniformly distributed on the convex surface of the cone above the skeleton supporting surface 2 of the impeller body in a radial shape, and the impeller body at the inner end of the gas-liquid mixing tube 7 is provi...

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Abstract

The vane wheel of surface aerator includes a vane wheel body and radial vanes fixed onto the vane wheel body. The conic vane wheel body has radial water jetting devices comprising jet nozzle with inlet communicated to central hole of the vane wheel body, vacuum sucking chamber with sucking hole communicated to the concave surface of the conic vane wheel body, and air-liquid mixing diffuser connected successively and coaxially. During operation of the surface aerator, the water jetting devices lift water from the shallow and medium layers to spray for negative pressure sucking diffusion, and this raises the oxygen inflating capacity greatly.

Description

Technical field [0001] The invention relates to an impeller of a surface aerator for aeration and oxygenation of sewage treatment. Background technique [0002] The surface aerator is the key equipment used in the oxidation ditch of the urban sewage treatment project. The impeller of the traditional inverted umbrella-type surface aerator is shaped like a paper umbrella opened upside down and installed on the water surface of the oxidation ditch. The machine decelerates and drives the rotation, and the air is entrained by a number of blades on the impeller, and the oxidized organic matter in the water is dissolved by oxygen to achieve the purpose of water purification. Since the blades can only push the water to rotate, the blades hit the water and cause the bubbles to break and the flow direction is turbulent. When the surface dissolved oxygen reaches a certain value, it is difficult to increase, resulting in poor aeration effect and low power efficiency, which can only be achiev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/24C02F7/00
CPCY02W10/10
Inventor 张鑫珩
Owner 中冶生态环保集团有限公司