Efficient aeration device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to an efficient aeration device. The aeration device comprises an aeration cylinder with an opening in the upper end, an aeration disc is arranged in the aeration cylinder and close to the lower portion of the aeration cylinder, an air inlet pipe is connected to the aeration disc, an aeration fan is connected to the end, opposite to the aeration disc, of the air inlet pipe, and the aeration fan is connected to the aeration cylinder. An ultrasonic generator is fixedly mounted in the center of the bottom of an inner cavity of the aeration cylinder, an ultrasonic generator guide rod is connected to the upper end of the ultrasonic generator, and the ultrasonic generator guide rod extends upwards and extends out of the aeration cylinder. The aeration disc can release large first bubbles into the wastewater to realize primary mixing of the gas and the wastewater, and the ultrasonic generator can release ultrasonic waves into the wastewater, so that the original gas in the wastewater and the large first bubbles are decomposed into small second bubbles, the contact area of the gas and the wastewater is further increased, and the gas and the wastewater are uniformly mixed. The aeration efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and particularly relates to an efficient aeration device. Background Art

[0002] During the wastewater treatment process, aeration is one of the key steps in the biological treatment process, and its purpose is to provide sufficient oxygen to the wastewater to meet the needs of microorganisms for growth and degradation of organic matter.

[0003] At present, traditional aeration and oxygenation usually adopt the method of blower aeration. Blower aeration means using an aeration blower with a certain air volume and pressure, passing air through an aeration device such as an aeration disc into the liquid through a connecting conveying pipeline, forming bubbles in the liquid, so that the gas is fully diffused and contacted in the liquid, achieving the purpose of aeration and oxygenation.

[0004] However, in actual use, during blower aeration, after the air is introduced into the liquid by the aeration blower, the bubble size formed in the liquid is relatively large, resulting in low oxygenation efficiency and restricting the efficiency of the entire wastewater treatment process. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an efficient aeration device. The aeration disc can release larger first bubbles into the wastewater to achieve the preliminary mixing of the gas and the wastewater. The ultrasonic generator can release ultrasonic waves into the wastewater, so that the original gas in the wastewater and the above-mentioned larger first bubbles are decomposed into smaller second bubbles, further increasing the contact area between the gas and the wastewater and improving the aeration efficiency.

[0006] In view of the above technical problems, the technical solution provided by the utility model is an efficient aeration device, including an aeration cylinder with an open upper end. An aeration disc is arranged in the aeration cylinder. The aeration disc is arranged near the lower part of the aeration cylinder. An air inlet pipe is connected to the aeration disc. The end of the air inlet pipe facing away from the aeration disc is connected to an aeration blower. A ultrasonic generator is fixedly installed at the center of the bottom of the inner cavity of the aeration cylinder. The upper end of the ultrasonic generator is connected to a ultrasonic generator guide rod, and the ultrasonic generator guide rod extends upward and extends out of the aeration cylinder.

[0007] Furthermore, a plurality of aeration discs are arranged in the aeration cylinder, and all the plurality of aeration discs are arranged near the lower part of the aeration cylinder.

[0008] Furthermore, the plurality of aeration discs are arranged in a staggered manner along the axial direction of the aeration cylinder. The lowermost aeration disc is arranged near the ultrasonic generator, and the uppermost aeration disc is arranged near the inner wall of the aeration cylinder.

[0009] Further, the intake pipe includes an intake main pipe and a plurality of intake branch pipes. The intake branch pipes correspond to the aeration discs one by one. One ends of the plurality of intake branch pipes are respectively connected to the corresponding aeration discs, and the other ends converge to the intake main pipe.

[0010] Further, an aeration cover is connected to the upper end of the aeration cylinder, and a plurality of air outlet holes are provided on the aeration cover.

[0011] Further, the intake pipe is made of SS304 stainless steel.

[0012] Further, the aeration cylinder is made of Kevlar material.

[0013] Further, a plurality of outwardly extending triangular supports are arranged in a circumferential array along the outer periphery of the bottom of the aeration cylinder.

[0014] Further, the triangular support is made of Kevlar material.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] (1) After placing the aeration device of the present application in the wastewater, drive the aeration fan. Air enters the wastewater from the aeration disc and releases larger first bubbles into the wastewater, realizing the preliminary mixing of gas and wastewater. At the same time, a part of the oxygen dissolves in the wastewater. The ultrasonic generator can release ultrasonic waves into the wastewater. Through the powerful mixing effect of ultrasonic waves, on the one hand, the aeration and oxygenation are improved, and on the other hand, the original gas and the above-mentioned larger first bubbles in the wastewater are decomposed into smaller second bubbles. In this way, the use of smaller second bubbles can further increase the contact area between gas and wastewater and improve the aeration efficiency.

[0017] By adjusting the energy of ultrasonic waves, the second bubbles can finally be compressed into micro-nano bubbles. Micro-nano bubbles have the characteristics of slow rising speed, long residence time, and high dissolution efficiency in water. At the same time, micro-nano bubbles have a larger specific surface area and higher mass transfer efficiency, which can increase the contact area between gas and wastewater, improve the efficiency of aeration and oxygenation, and improve the wastewater treatment efficiency.

[0018] The upper end of the guide rod of the ultrasonic generator extends upward and extends out of the aeration cylinder. The ultrasonic generator guide rod can be used to continuously release ultrasonic waves around it, so that the second bubbles are evenly distributed in the wastewater, enabling the second bubbles to be fully mixed with the wastewater in the circumferential and vertical directions, making the wastewater have uniform oxygen content and improving the aeration efficiency.

[0019] (2) The triangular support can be used to maintain the stable position of the aeration device, avoiding overturning during use and affecting the aeration efficiency. Description of the Drawings

[0020] Figure 1It is a front sectional view of an efficient aeration device in Embodiment 1 of the present utility model.

[0021] Figure 2 It is the usage effect diagram of an efficient aeration device in Embodiment 1 of the present utility model.

[0022] In the figure: 1. Aeration cylinder; 11. Aeration cylinder body; 12. Base; 2. Air inlet pipe; 21. Main air inlet pipe; 22. Branch air inlet pipe; 3. Aeration disc; 4. Ultrasonic generator; 5. Ultrasonic generator guide rod; 6. Aeration cover; 61. Air outlet hole; 7. First bubble; 8. Second bubble; 9. Flange; 10. Triangular support. Specific implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application: Specific Embodiment 1:

[0025] Refer to Figures 1 to 2 , an efficient aeration device (hereinafter referred to as the aeration device) of the present utility model includes an aeration cylinder 1. The aeration cylinder 1 includes an aeration cylinder body 11 and a base 12 fixedly sealing the lower end of the aeration cylinder body 11, so that the aeration cylinder body 11 forms a cylindrical structure with an open upper end.

[0026] An aeration disc 3 is arranged in the aeration cylinder body 11, and the aeration disc 3 is arranged near the lower part of the aeration cylinder 1. An air inlet pipe 2 is connected to the aeration disc 3, and the end of the air inlet pipe 2 facing away from the aeration disc 3 is connected to an aeration fan (not shown in the figure). Specifically, a connection hole is opened at the position of the aeration cylinder body 11 corresponding to the aeration disc 3. The lower end of the air inlet pipe 2 extends into the connection hole and is connected to the aeration disc 3, and the upper end of the air inlet pipe 2 extends out of the water surface and is connected to the aeration fan.

[0027] An ultrasonic generator 4 is fixedly installed at the center of the inner cavity bottom of the aeration cylinder 1. The upper end of the ultrasonic generator 4 is connected to an ultrasonic generator guide rod 5, and the ultrasonic generator guide rod 5 extends upward and extends out of the aeration cylinder 1. In this embodiment, the ultrasonic generator 4 includes an ultrasonic oscillator, and the ultrasonic oscillator can generate oscillations by using the high-frequency sound waves of ultrasonic waves to stir the liquid.

[0028] Preferably, in this embodiment, a plurality of aeration discs 3 are arranged in the aeration cylinder 1, and the plurality of aeration discs 3 are all arranged near the lower part of the aeration cylinder 1. Specifically, in this embodiment, the plurality of aeration discs 3 are arranged in a staggered manner along the axial direction of the aeration cylinder 1. The lowermost aeration disc 3 is arranged close to the ultrasonic generator 4, and the uppermost aeration disc 3 is arranged close to the inner wall of the aeration cylinder 1. In this way, through the staggered arrangement of the aeration discs 3, the accumulation of bubbles generated by adjacent aeration discs 3 can be avoided, and correspondingly, the available distribution area of the first bubbles 7 in the aeration cylinder 1 can be increased, and the number of the first bubbles 7 can be correspondingly increased.

[0029] Specifically, in this embodiment, there are three aeration discs 3. Of course, in other embodiments, when meeting the actual use requirements, the aeration discs 3 can include two, four, five, etc., or even only one. And when there are multiple aeration discs 3, their arrangement methods can also be changed according to actual needs. For example, multiple aeration discs 3 are arranged in a circumferential array around the ultrasonic generator 4.

[0030] Preferably, in this embodiment, the air inlet pipe 2 includes an air inlet main pipe 21 and a plurality of air inlet straight pipes 22. The air inlet branch pipes 22 correspond to the aeration discs 3 one by one. One ends of the plurality of air inlet branch pipes 22 are respectively connected to the corresponding aeration discs 3, and the other ends converge to the air inlet main pipe 21. The upper end of the air inlet main pipe 21 is connected to an aeration fan. Specifically, the aeration disc 3 and its corresponding air inlet branch pipe 22 are connected by a flange 9.

[0031] Preferably, in this embodiment, an aeration cover 6 is connected to the upper end of the aeration cylinder 1, and the aeration cover 6 is fixedly sealed with the aeration cylinder 1. A plurality of air outlet holes 61 are arranged on the aeration cover 6, and the second bubbles 8 enter the external wastewater from the air outlet holes 61 for dissolved oxygen. In this way, the aeration cover 6 can block the flow of the second bubbles 8 to a certain extent, reduce the floating speed of the second bubbles 8, increase the residence time of the second bubbles 8, increase the dissolved oxygen, and improve the aeration efficiency.

[0032] Preferably, in this embodiment, a plurality of outwardly extending triangular supports 10 are arranged in a circumferential array along the outer periphery of the bottom of the aeration cylinder 1. On the one hand, the triangular supports 10 can make the overall center of gravity of the aeration device lower, which is beneficial to maintaining its vertical state in water. On the other hand, the contact area between the bottom of the aeration device and the wastewater can be correspondingly increased.

[0033] Preferably, in this embodiment, the air inlet pipe 2 is made of SS304 stainless steel. On the one hand, this ensures the corrosion resistance of the air inlet pipe. On the other hand, by cooperating with the triangular supports 10 using the rigid air inlet pipe 2, the aeration device can be stably supported in water, and the position and attitude of the device can also be adjusted according to actual needs to adapt to different water depths and water flow conditions.

[0034] Preferably, in this embodiment, both the aeration cylinder 1 and the triangular support 10 are made of Kevlar fiber material. Kevlar fiber has the characteristics of low density, high strength, wear resistance and hydrophobicity. It can not only effectively resist the scouring and corrosion of water flow, but also prevent stains and scale from accumulating on the surface area, ensuring the long-term stable operation of the aeration device. Of course, in other embodiments, when meeting the actual use requirements, the aeration cylinder 1 and the triangular support 10 can also be made of stainless steel.

[0035] In summary, when the aeration device of the present utility model is actually used, when it is necessary to aerate and oxygenate the wastewater, the aeration device of this application is placed in the wastewater to be treated.

[0036] By driving the aeration fan, air is introduced into the wastewater through the aeration disc 3, and larger first bubbles 7 are released into the wastewater. The first bubbles 7 can be used to achieve the preliminary mixing of gas and wastewater, and at the same time, part of the oxygen is dissolved in the wastewater.

[0037] The ultrasonic generator 4 can be used to release ultrasonic waves into the wastewater. Through the powerful mixing effect of the ultrasonic waves, the original gas in the wastewater and the above-mentioned larger first bubbles 7 are decomposed into smaller second bubbles 8. In this way, the smaller second bubbles 8 can be used to further increase the contact area between the gas and the wastewater and improve the aeration efficiency.

[0038] At the same time, by adjusting the energy of the ultrasonic waves, under the action of the ultrasonic oscillator, electrical energy is converted into mechanical energy to generate high-frequency vibration waves, thereby compressing the gas in the liquid to produce a cavitation phenomenon, so that the second bubbles 8 finally form tiny micro-nano bubbles. Micro-nano bubbles have the characteristics of slow rising speed, long residence time and high dissolution efficiency in water. At the same time, micro-nano bubbles have a larger specific surface area and higher mass transfer efficiency, which can increase the contact area between the gas and the wastewater, improve the efficiency of aeration and oxygenation, and thus improve the efficiency of wastewater treatment.

[0039] The upper end of the ultrasonic generator guide rod 5 extends upward and extends out of the aeration cylinder 1. The ultrasonic generator guide rod 5 is used to continuously release ultrasonic waves around it, so that the second bubbles 8 are evenly distributed in the wastewater, so that the second bubbles 8 are fully mixed with the wastewater in the circumferential and vertical directions, making the wastewater evenly oxygenated and improving the aeration efficiency.

[0040] The above is only the preferred embodiment of this application and is not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

[0041] In the description of the embodiments of the present application, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use, it is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0042] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

Claims

1. An efficient aeration device, characterized in that, It includes an aeration cylinder with an open upper end. An aeration disc is arranged inside the aeration cylinder. The aeration disc is arranged near the lower part of the aeration cylinder. An air inlet pipe is connected to the aeration disc. One end of the air inlet pipe facing away from the aeration disc is connected to an aeration blower. An ultrasonic generator is fixedly installed at the center of the bottom of the inner cavity of the aeration cylinder. The upper end of the ultrasonic generator is connected to an ultrasonic generator guide rod, and the ultrasonic generator guide rod extends upward and extends out of the aeration cylinder.

2. The high-efficiency aeration device according to claim 1, characterized in that A plurality of aeration discs are arranged inside the aeration cylinder, and all of the plurality of aeration discs are arranged near the lower part of the aeration cylinder.

3. The high-efficiency aeration device according to claim 2, wherein The plurality of aeration discs are arranged in a staggered manner in sequence along the axial direction of the aeration cylinder. The lowermost aeration disc is arranged near the ultrasonic generator, and the uppermost aeration disc is arranged near the inner wall of the aeration cylinder.

4. The high-efficiency aeration device according to claim 2, wherein The air inlet pipe includes an air inlet main pipe and a plurality of air inlet branch pipes. The air inlet branch pipes correspond to the aeration discs one by one. One ends of the plurality of air inlet branch pipes are respectively connected to the corresponding aeration discs, and the other ends converge to the air inlet main pipe.

5. The efficient aeration device according to claim 1, characterized in that, The upper end of the aeration cylinder is connected to an aeration cover, and a plurality of air outlet holes are arranged on the aeration cover.

6. The high-efficiency aeration device according to claim 1, wherein The material of the air inlet pipe is SS304 stainless steel.

7. The high-efficiency aeration device according to claim 1, characterized in that The aeration cylinder is made of Kevlar fiber material.

8. The high-efficiency aeration device according to claim 1, characterized in that, A plurality of outwardly extending triangular supports are arranged in an array along the circumferential direction at the bottom of the outer periphery of the aeration cylinder.

9. The high-efficiency aeration device according to claim 8, characterized in that, The triangular support is made of Kevlar fiber material.

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