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Aeration rotary brush

A technology of aeration and rotating brushes and blades, which is applied in water aeration, water/sludge/sewage treatment, biological water/sewage treatment, etc. It can solve the problem of large changes in water level in oxidation ditch, increase water flow resistance, and increase operating energy consumption, etc. problems, to achieve the effect of increasing the working water depth, reducing the running resistance, and improving the oxygenation capacity

Inactive Publication Date: 2011-07-13
LINGZHI ENVIRONMENTAL PROTECTION CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the installation of deflectors increases the bottom flow velocity, increases the working water depth, and can also improve the oxygenation capacity, but the addition of deflectors will increase water flow resistance, deteriorate hydraulic properties, and increase operating energy consumption. Tests show that adding deflectors requires more 15%-30% power consumption, so the actual overall power efficiency not only did not improve, but decreased, which is not economical
Moreover, if the deflector is not well designed, it will also cause a large change in the water level in the oxidation ditch. For example, the lowering of the water level will cause the top of the deflector to be exposed, resulting in serious hydraulic splashing. This phenomenon often occurs in the rotary brush aeration oxidation ditch process. occur
Therefore, the rotary brush blade still needs to be improved

Method used

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Examples

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Effect test

Embodiment 1

[0022] Example 1: see Figure 1-6 , the aeration rotating brush of the present invention, is made up of central axis 1 and the straight rotating brush blade 2 that periphery is radially fixed, wherein the section of the rotating brush blade is triangular, and the rotating brush blade is fixed on the rotating shaft, so that when the aeration rotating brush runs, the blade The triangular cone enters the water first. There are circular pits 3 and triangular bumps 4 on both sides of the triangle of the rotating brush blade (wherein the triangle of the bump is in the same direction as the triangle of the blade section), the bumps on the adjacent blades are arranged in a staggered manner, and the backside (triangular top surface) 5 has Circular dimples 6 are alternated, and the end faces of the blades are also triangular ( Figure 4 ). The rotating brush blade is composed of two symmetrical pieces molded with glass fiber reinforced resin. The rotating brush blade is fixed on the h...

Embodiment 2

[0023] Example 2: see Figure 7 , as in Embodiment 1, wherein the triangular projections 4 on both sides of the rotating brush blade are arranged opposite to the triangle in the section of the rotating brush blade, and the triangular tip of the rotating brush blade has serrations 7 .

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Abstract

The invention relates to improvement of an aeration rotary brush for water treatment. The aeration rotary brush is characterized in that the section of the blade of the rotary brush is in a triangle or a triangle-like shape; the aeration rotary brush is installed on a hub shaft so that triangle sharp cone enters water firstly when the aeration rotary brush turns into water. When the rotary brush rapidly turns into water, the tip end of the blade rushes into water, thereby greatly reducing resistance when the blade enters into water and operates in water, further reducing operation energy consumption and improving oxygenation dynamic efficiency; and since the resistance generated when the blade enters in water and operates in water is small, the problem that the blade is easy to deform and break after long-term operation under large resistance when entering water is overcome, the long service life of the blade is ensured, oxygenation capability and plug flow velocity can be improved through improving rotation speed, the maximum work water depth of a one-meter aeration rotary brush is as high as 5 meters; and by pits and / or lugs on side surfaces of the blade, plug flow dynamics and oxygenation efficiency both can be improved. Compared with a traditional rotary brush blade with the same specification, the aeration rotary brush provided by the invention has the advantages that the oxygenation capability is improved by 35%, the length per meter reaches 11.1 kgO2 / h, the overall dynamic efficiency is improved by 25% under the same electricity consumption, and dynamic efficiency can reach 3.125 kgO2 / kw.h.

Description

technical field [0001] The invention is an improvement to the aeration rotary brush used for water treatment, in particular to an aeration rotary brush with high oxygenation power efficiency, small water entry and running resistance, and long service life. Background technique [0002] Compared with the turntable, the rotation speed of the rotating brush is higher, and it has the advantages of fast flow velocity and high oxygenation efficiency when used in water treatment. However, the power efficiency is low, and due to the limitation of the blade strength, the diameter is generally less than 1 meter, so the working water depth is shallower than that of the turntable, and the working water depth is generally not more than 3.5 meters, which is its shortcoming. The basic structure of the prior art aeration rotating brush includes a central hub shaft and rotating brush blades fixed radially around it, as typically described in Chinese patents CN2175226 and CN2216524. In order...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F7/00C02F1/74C02F3/12
CPCY02W10/10
Inventor 潘明霞何凤杨梁艳杰饶政柱潘家宝王永君周敏
Owner LINGZHI ENVIRONMENTAL PROTECTION CO LTD
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