Efficient gas-liquid mixing device for sewage aeration device

Abstract

The utility model relates to the technical field of sewage aeration treatment, and discloses a high-efficiency gas-liquid mixing device for a sewage aeration device, which comprises an aeration machine, a first mixing component is arranged in the aeration machine, and the first mixing component is used for primarily mixing entering gas and liquid; a second mixing assembly for performing Karman vortex street mixing on gas and liquid is arranged on one side of the first mixing assembly, and a third mixing assembly for repeatedly impacting and mixing the gas and the liquid is arranged on one side of the second mixing assembly; through the arrangement of the first mixing assembly, the second mixing assembly and the third mixing assembly, after entering the aeration machine, gas and liquid are in contact with a second flexible plate to form a Karman vortex street state for mixing, then are scattered and mixed by the first mixing assembly, and then are mixed by the second mixing assembly in a Karman vortex street state again; and finally, the gas is blocked by the third mixing assembly and is mixed with subsequent gas and liquid.

Description

Technical Field

[0001] This utility model relates to the field of wastewater aeration treatment technology, and in particular to a high-efficiency gas-liquid mixing device for wastewater aeration. Background Technology

[0002] In wastewater treatment, the activated sludge process (ASP) and its improved processes have become one of the main treatment methods. Since its inception a century ago, this method has undergone continuous development and practice, and the aeration technology has gradually evolved from the initial uniform aeration method to today's fine bubble (FB) and nano bubble (NB) aeration methods.

[0003] For example, Chinese utility model patent CN211813705U discloses a sewage treatment aeration device. Although the above-mentioned prior art can allow sewage in the metal cylinder to be intermittently squeezed into the treatment tank, which is beneficial to the dispersion of water and can achieve the re-aeration treatment of water and achieve better aeration effect, the thorough mixing of gas and liquid is particularly important in the sewage aeration process. The above-mentioned prior art uses a lot of external equipment to improve the aeration effect. The external equipment not only requires additional power consumption, but also increases the workload of workers every time the equipment is maintained. Once the external equipment is damaged, the aeration device will stop working, which will greatly affect the working efficiency of the aeration device. Therefore, it is necessary to design an aeration device with gas-liquid mixing device that does not have additional consumption and is easy to maintain. Utility Model Content

[0004] To address the technical problem that external equipment not only increases energy consumption during aeration but also affects the working efficiency of the aeration device if damaged, this utility model provides a high-efficiency gas-liquid mixing device for sewage aeration devices.

[0005] This utility model is achieved by the following technical solution: a high-efficiency gas-liquid mixing device for sewage aeration, including an aerator. The aerator is provided with a first mixing component for preliminary mixing of the incoming gas and liquid. A second mixing component is provided on one side of the first mixing component for mixing the gas and liquid by Karman vortex street. A third mixing component is provided on one side of the second mixing component for repeated collision mixing of gas and liquid. The second mixing component includes a flexible mesh ball fixedly installed inside the aerator and two first flexible mesh plates fixedly installed inside the flexible mesh ball.

[0006] Through the above technical solution, the gas and liquid entering the aerator will be fully mixed by the first mixing component, the second mixing component and the third mixing component.

[0007] As a further improvement to the above solution, a second flexible mesh plate is fixedly installed inside one end of the aerator inlet.

[0008] Through the above technical solution, the gas and liquid entering the aerator will be blocked by the second flexible mesh plate to form a Karman vortex street, thereby allowing the gas and liquid to mix efficiently.

[0009] As a further improvement to the above solution, the first mixing component includes a first support plate fixedly installed inside the aerator, a first rotating shaft rotatably installed on the first support plate, and a plurality of drive blades installed on the first rotating shaft.

[0010] Through the above technical solution, the gas and liquid entering the aerator will cause the drive fan blades to rotate, thereby creating agitation.

[0011] As a further improvement to the above solution, a fixing plate is fixedly installed at one end of the first rotating shaft, and a plurality of stirring rods for stirring gas and liquid are fixedly installed on the circumferential surface of the fixing plate.

[0012] Using the above technical solution, driving the fan blades to rotate will cause the first rotating shaft to drive the stirring rod to rotate and stir.

[0013] As a further improvement to the above solution, the third mixing component includes a second support plate fixedly installed inside the aerator, a second rotating shaft rotatably installed on the second support plate, and a plurality of baffles fixedly installed on the second rotating shaft.

[0014] Through the above technical solution, the flowing gas and liquid are blocked by multiple baffles, and repeatedly mixed and impacted with the subsequent gas and liquid.

[0015] As a further improvement to the above solution, multiple baffles are fixedly installed in an alternating manner.

[0016] The above technical solution allows for more uniform gas-liquid mixing through staggered baffles.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention, by setting up a first mixing component, a second mixing component, and a third mixing component, ensures that after the gas and liquid enter the aerator, they come into contact with the second flexible plate to form a Karman vortex street for mixing. The mixture is then dispersed and mixed by the first mixing component, and again formed into a Karman vortex street by the second mixing component. Finally, it is blocked by the third mixing component and mixed with subsequent gas and liquid. This arrangement allows for efficient and thorough mixing of the gas and liquid entering the aerator. Furthermore, the structure is simple and requires no external force; only the impact force of the gas and liquid entering the aerator is needed. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2This is a schematic diagram of the internal structure of the aerator of this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the flexible mesh ball structure of this utility model.

[0022] Explanation of key symbols:

[0023] 1. Aerator; 201. First support plate; 202. First rotating shaft; 203. Drive blade; 301. Flexible mesh ball; 302. First flexible mesh plate; 401. Second support plate; 402. Second rotating shaft; 403. Baffle; 5. Second flexible mesh plate; 6. Fixing plate; 7. Stirring rod. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Please combine Figure 1-Figure 3 This embodiment of a high-efficiency gas-liquid mixing device for wastewater aeration includes an aerator 1. The aerator 1 has a first mixing component inside which the incoming gas and liquid are initially mixed. A second mixing component is provided on one side of the first mixing component to mix the gas and liquid using a Karman vortex street. A third mixing component is provided on one side of the second mixing component to allow the gas and liquid to repeatedly collide and mix. The second mixing component includes a flexible mesh ball 301 fixedly installed inside the aerator 1 and two first flexible mesh plates 302 fixedly installed inside the flexible mesh ball 301. The gas and liquid entering the aerator 1 are fully mixed by the first mixing component, the second mixing component and the third mixing component.

[0026] Combination Figure 2 and Figure 3 A second flexible mesh plate 5 is fixedly installed inside one end of the aerator 1. The first mixing component includes a first support plate 201 fixedly installed inside the aerator 1, a first rotating shaft 202 rotatably installed on the first support plate 201, and a plurality of drive fan blades 203 installed on the first rotating shaft 202. A fixing plate 6 is fixedly installed at one end of the first rotating shaft 202. A plurality of stirring rods 7 for stirring gas and liquid are fixedly installed on the circumferential surface of the fixing plate 6. The gas and liquid entering the aerator 1 will be blocked by the second flexible mesh plate 5 to form a Karman vortex street, thereby allowing the gas and liquid to mix efficiently. The gas and liquid entering the aerator 1 will cause the drive fan blades 203 to rotate, thereby driving the stirring rods 7 to rotate and stir.

[0027] Combination Figure 2 and Figure 3The third mixing component includes a second support plate 401 fixedly installed inside the aerator 1, a second rotating shaft 402 rotatably installed on the second support plate 401, and a plurality of baffles 403 fixedly installed on the second rotating shaft 402. The plurality of baffles 403 are fixedly installed in an alternating manner, and the flowing gas and liquid are blocked by the plurality of baffles 403, and repeatedly mixed and impacted with the subsequent gas and liquid.

[0028] The implementation principle of the high-efficiency gas-liquid mixing device for sewage aeration in this embodiment is as follows: When gas and liquid enter from the bottom of the aerator 1, they come into contact with the second flexible mesh plate 5. Under the obstruction of the mesh plate, the passing gas and liquid form a Karman vortex street flow state, performing initial gas-liquid mixing. The subsequent gas and liquid flow impacts the drive blade 203, causing the drive blade 203 to rotate. The rotation of the drive blade 203 drives the first rotating shaft 202 to rotate, thus causing multiple stirring rods 7 to rotate and perform secondary gas-liquid mixing. The subsequent gas and liquid flow... The gas will pass through the flexible mesh ball 301 and the two first flexible mesh plates 302. This passage will create a new Karman vortex street flow state, allowing the gas and liquid to mix for the third time. After that, the gas and liquid will come into contact with and collide with multiple baffles 403. In this way, the gas and liquid flowing in front will mix with the gas and liquid flowing behind due to the impact force, and then flow through the baffles 403, thus completing the fourth mixing of gas and liquid. This setting allows the gas and liquid entering the aerator 1 to be mixed efficiently and fully. The structure is simple and does not require the intervention of external forces. Only the impact force of the gas and liquid entering the aerator 1 is needed.

[0029] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A high-efficiency gas-liquid mixing device for wastewater aeration, comprising an aerator (1), characterized in that, The aerator (1) is provided with a first mixing component for initial mixing of the incoming gas and liquid. A second mixing component for mixing the gas and liquid by Karman vortex street is provided on one side of the first mixing component. A third mixing component for repeatedly mixing the gas and liquid by impact is provided on one side of the second mixing component. The second mixing component includes a flexible mesh ball (301) fixedly installed inside the aerator (1) and two first flexible mesh plates (302) fixedly installed inside the flexible mesh ball (301).

2. The high-efficiency gas-liquid mixing device for wastewater aeration as described in claim 1, characterized in that, A second flexible mesh plate (5) is fixedly installed inside one end of the inlet of the aerator (1).

3. The high-efficiency gas-liquid mixing device for wastewater aeration as described in claim 1, characterized in that, The first mixing assembly includes a first support plate (201) fixedly installed inside the aerator (1), a first rotating shaft (202) rotatably installed on the first support plate (201), and a plurality of drive blades (203) installed on the first rotating shaft (202).

4. The high-efficiency gas-liquid mixing device for wastewater aeration as described in claim 3, characterized in that, A fixing plate (6) is fixedly installed at one end of the first rotating shaft (202), and a plurality of stirring rods (7) for stirring gas and liquid are fixedly installed on the circumferential surface of the fixing plate (6).

5. The high-efficiency gas-liquid mixing device for wastewater aeration as described in claim 1, characterized in that, The third mixing component includes a second support plate (401) fixedly installed inside the aerator (1), a second rotating shaft (402) rotatably installed on the second support plate (401), and a plurality of baffles (403) fixedly installed on the second rotating shaft (402).

6. The high-efficiency gas-liquid mixing device for wastewater aeration as described in claim 5, characterized in that, The multiple baffles (403) are fixedly installed in an alternating manner.

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