Anti-backflow micro-nano aeration device

Abstract

The utility model discloses an anti-backflow micro-nano aeration device which comprises an aeration pipe and an air flow dispersion unit, the air flow dispersion unit comprises an aeration head connected to the aeration pipe, the aeration head comprises a main body part and a plurality of nozzle parts, a first cavity is arranged in the main body part, and a second cavity is arranged in the main body part. The nozzle part is connected to the outer side of the main body part in a scattered mode, and a second cavity is formed in the nozzle part; the first cavity is communicated with the aeration pipe and the second cavity, the second cavity is in a cone shape, and an air outlet is formed in the tip end of the second cavity. Under the influence of the shape of the second cavity, the airflow output by the micro-nano aeration device is not easy to flow back through the micro air outlet, and when the micro-nano aeration device is used in the fields of sewage treatment, water body purification and the like, sludge can be prevented from flowing back along with gas backflow.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oxygenation aeration, especially relates to a backflow prevention micro - nanometer aeration device. BACKGROUND

[0002] Aeration refers to the process of injecting air or oxygen into a liquid to improve the solubility and mass transfer efficiency of the gas in the liquid. Aeration technology is widely used in water treatment, wastewater treatment, and bioreactors, and its main purpose is to increase the dissolved oxygen content in water to support the growth and metabolic activity of microorganisms, thereby promoting the degradation and removal of pollutants.

[0003] During the aeration process, the gas is cut into tiny bubbles that rise in the water and come into contact with the surrounding liquid, thereby improving the transfer and absorption efficiency of the gas. Aeration can be achieved through mechanical stirring, diffusers, micro-porous aerators, etc., among which micro-nano aeration technology is attracting attention due to its high mass transfer performance and wide application prospects.

[0004] Micro-nano bubbles can be generated through micro-nano aeration technology. Micro-nano bubbles refer to bubbles with a diameter of tens of microns to hundreds of nanometers, which have a large specific surface area and slow rising speed, thus having a high oxygen mass transfer efficiency. The surface of the bubbles carries a negative charge, which can adsorb positively charged substances in water, and has strong adsorption capacity. When the bubbles burst, they can generate a large amount of hydroxyl radicals and other strong oxidizing substances, which have high reactivity and can effectively degrade pollutants in water.

[0005] As can be seen, micro-nano aeration technology has many excellent characteristics. However, the existing micro-nano aeration devices still have deficiencies that need to be improved. For example, the existing micro-nano aeration devices do not have the function of preventing backflow during aeration, which affects the mass transfer efficiency and increases the operating energy consumption. When used in scenarios such as wastewater treatment and water purification, it may cause uneven dissolved oxygen concentration in the water body, and there may be a situation of sludge backflow with the gas, causing the device to be blocked. SUMMARY

[0006] The purpose of the utility model is to provide a micro-nano aeration device that prevents backflow and has the function of preventing backflow.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The application discloses an anti-backflow micro-nano aeration device, which comprises an aeration pipe and a gas flow dispersion unit, wherein the gas flow dispersion unit comprises an aeration head connected to the aeration pipe, the aeration head comprises a main body part and a plurality of nozzle parts, a first cavity is arranged in the main body part, the nozzle parts are separately connected to the outer side of the main body part, and a second cavity is arranged in each nozzle part; the first cavity is communicated with the aeration pipe and the second cavity, the second cavity is in the shape of a cone, and a gas outlet is arranged at the tip of the second cavity.

[0009] Further, the gas flow dispersion unit further comprises a microporous membrane, the microporous membrane is arranged on the outer side of the aeration head, and a third cavity is formed between the microporous membrane and the aeration head.

[0010] Further, the microporous membrane is a microporous inert material membrane.

[0011] Further, the microporous membrane is attached with aerobic microorganisms.

[0012] Further, the third cavity is filled with activated sludge.

[0013] Further, the main body part has a spherical crown surface on the outer side, and the nozzle parts are connected to the spherical crown surface.

[0014] Further, the nozzle parts are radially and uniformly distributed on the main body part.

[0015] Further, the main body part, the nozzle parts and the aeration pipe are integrally formed.

[0016] Further, the second cavity is in the shape of a cone.

[0017] Further, at least two gas flow dispersion units are arranged, and the gas flow dispersion units are arranged at intervals along the length direction of the aeration pipe.

[0018] The application has the following beneficial effects:

[0019] 1. The aeration head comprises a main body part and a plurality of nozzle parts, the aeration pipe and the nozzle parts are communicated with each other through the main body part, the second cavity in the shape of a cone is arranged in each nozzle part, and the gas outlet of the aeration head is arranged at the tip of the second cavity; due to the shape of the second cavity, the backflow of the output gas through the tiny gas outlet is not easy, and the backflow of sludge along with the gas can be avoided when the aeration device is used in the fields of sewage treatment and water purification.

[0020] 2. In the aeration head, the main body part has a spherical crown surface on the outer side, and the nozzle parts are radially and uniformly distributed on the spherical crown surface, so that the gas can be output at multiple angles, and after the secondary dispersion of the gas through the microporous membrane, the gas can be uniformly introduced into the liquid, thereby avoiding the insufficient supply of oxygen in some areas.

[0021] 3、Micro-porous membrane attached with aerobic microorganisms, the airflow output by the aeration head can contact the aerobic microorganisms on the micro-porous membrane when it is dispersed for the second time at the micro-porous membrane, so as to provide sufficient oxygen for the aerobic microorganisms and promote the metabolic activity and growth efficiency of the aerobic microorganisms, and the aerobic microorganisms can convert organic pollutants in water into harmless substances, so as to purify water quality and effectively improve the pollutant treatment efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The utility model uses state diagram.

[0023] Figure 2 The utility model is airflow dispersion unit structure schematic view.

[0024] Figure 3 The utility model is aeration head and aeration pipe connection schematic view.

[0025] Figure 4 The utility model is Figure 3 When the structure partial enlargement schematic view of part A.

[0026] Main component symbol explanation: 100, aeration pipe;200, airflow dispersion unit;210, aeration head;211, main body part;2111, spherical crown face;212, nozzle part;213, first cavity;214, second cavity;2141, gas outlet;215, micro-porous membrane;216, third cavity. DETAILED DESCRIPTION

[0027] The utility model is further explained in combination with the drawings and specific embodiments.

[0028] As Figures 1-4 The utility model discloses a kind of backflow prevention micro-nano aeration device, including aeration pipe 100 and airflow dispersion unit 200, airflow dispersion unit 200 includes the aeration head 210 connected on aeration pipe 100.As the key component of release micro-nano bubble, the aeration head 210 includes main body part 211 and multiple nozzle parts 212, first cavity 213 is arranged in main body part 211, nozzle part 212 is dispersedly connected on the outside of main body part 211, and second cavity 214 is arranged in nozzle part 212. Among them, first cavity 213 is communicated with aeration pipe 100 and second cavity 214, play the role of link aeration pipe 100 and nozzle part 212, second cavity 214 is conical, preferably conical. And the tip of second cavity 214 is provided with the gas outlet 2141 communicated with the outside of aeration head 210.

[0029] Based on the special shape structure of the second cavity 214 and the small gas outlet 2141 at the tip thereof, the output gas flow is not easy to flow back into the aeration head 210, which can reduce the influence of gas backflow on the mass transfer efficiency and operation energy consumption. In the scenario of using activated sludge for sewage treatment and water purification, the backflow of sludge into the aeration head 210 can also be avoided. Moreover, due to the influence of the second cavity 214 and the gas outlet 2141, the device can generate smaller bubbles, which is beneficial to increase the gas-liquid contact area, improve the oxygen mass transfer efficiency, and the small bubbles have a longer residence time in water, which helps to dissolve oxygen in water more fully.

[0030] As a preferred, the main body part 211 has a spherical cap surface 2111 on the outer side thereof, and the nozzle part 212 is connected to the spherical cap surface 2111. Through the spherical cap surface 2111, the nozzle part 212 can be arranged in multiple directions, and the gas flow is output in multiple directions, which is beneficial to the multi-directional entry of bubbles into the water body, uniform distribution, avoidance of insufficient oxygen supply in some areas, and improvement of the oxygen supply uniformity of the device. Further, the nozzle part 212 is uniformly distributed on the outer side of the main body part 211 in a radial manner, and the effect of multi-directional and uniform output of gas flow is better. The main body part 211, the nozzle part 212, and the aeration pipe 100 are integrally formed to ensure the structural strength and reduce the joint.

[0031] In the embodiment, at least two gas flow dispersion units 200 are provided, and each gas flow dispersion unit 200 is arranged along the length direction of the aeration pipe 100 to fully aerate and improve the aeration efficiency. In addition to the aeration head 210, the gas flow dispersion unit 200 also includes a microporous membrane 215, which is arranged on the outer side of the aeration head 210 to perform secondary dispersion of the gas flow, thereby forming smaller bubbles in the water body and increasing the gas-liquid contact area. The microporous membrane 215 is a microporous inert material membrane, which has good corrosion resistance and oxidation resistance. The microporous membrane 215 and the aeration head 210 are spaced apart and form a third cavity 216, and the third cavity 216 contains activated sludge to degrade organic matter in the water body. Under the interception of the microporous membrane 215, the activated sludge in the third cavity 216 will not float upward, which is beneficial to improve the cleanliness of the water surface.

[0032] The microporous membrane 215 is attached with aerobic microorganisms, and the gas flow output by the aeration head 210 can contact the aerobic microorganisms on the microporous membrane 215 when performing secondary dispersion at the microporous membrane 215, which can provide sufficient oxygen for the aerobic microorganisms and promote their metabolic activity and growth efficiency. The aerobic microorganisms attached to the microporous membrane 215 can convert organic pollutants in water into harmless substances, thereby purifying the water quality and effectively improving the pollutant treatment efficiency.

[0033] From the above, the micro-nano aeration device has the backflow prevention function, can uniformly release the micro-nano bubbles at multiple angles, the oxygen mass transfer efficiency of the released micro-nano bubbles is high, and the device is provided with aerobic microorganisms and activated sludge, so that the pollutant treatment efficiency is higher.

[0034] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all are within the protection scope of the utility model.

Claims

1. A backflow-preventing micro-nano aeration device, characterized in that: The aeration pipe and the airflow dispersion unit are included, the airflow dispersion unit includes an aeration head connected to the aeration pipe, the aeration head includes a main body and a plurality of nozzle parts, the main body is provided with a first cavity, the nozzle parts are connected to the outside of the main body, and the nozzle parts are provided with a second cavity; the first cavity is communicated with the aeration pipe and the second cavity, the second cavity is in the shape of a cone, and the tip of the second cavity is provided with an air outlet.

2. The anti-backflow micro-nano aerator according to claim 1, characterized in that: The airflow dispersion unit further includes a microporous membrane, the microporous membrane is arranged on the outside of the aeration head, and a third cavity is formed between the microporous membrane and the aeration head.

3. The anti-backflow micro-nano aerator according to claim 2, characterized in that: The microporous membrane is an inert material film with micropores.

4. The anti-backflow micro-nano aerator according to claim 2, characterized in that: The microporous membrane is attached with aerobic microorganisms.

5. The anti-backflow micro-nano aerator according to claim 2, wherein: The third cavity is filled with activated sludge.

6. The anti-backflow micro-nano aerator according to claim 1, wherein: The main body is provided with a spherical crown surface, and the nozzle parts are connected to the spherical crown surface.

7. The anti-backflow micro-nano aerator according to claim 6, characterized in that: The nozzle parts are radially and uniformly distributed on the main body.

8. The anti-backflow micro-nano aerator according to claim 1, wherein: The main body, the nozzle parts and the aeration pipe are integrally formed.

9. The anti-backflow micro-nano aerator according to claim 1, wherein: The second cavity is in the shape of a cone.

10. The anti-backflow micro-nano aerator according to claim 1, wherein: At least two airflow dispersion units are provided, and the airflow dispersion units are arranged at intervals along the length direction of the aeration pipe.

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