Aeration device for sewage treatment biochemical tank

Abstract

This utility model relates to the field of wastewater treatment technology, specifically to an aeration device for a wastewater treatment biological treatment tank. The utility model includes an aeration main pipe, aeration branch pipes, regulating valves, and aeration heads. The aeration main pipe and each aeration branch pipe are hollow structures with openings at both ends. Multiple aeration branch pipes are provided and evenly distributed on both sides of the aeration main pipe. The regulating valve is installed at the connection point between the aeration main pipe and each aeration branch pipe. The aeration heads are fixedly installed on both sides of the aeration branch pipes and are connected to them. The utility model also includes plugs and a support assembly. The plugs are installed at one end of the aeration main pipe and aeration branch pipes, and threads are provided on the inner wall of one end of the aeration main pipe and aeration branch pipes and on the outer wall of the plug. The plugs are threadedly connected to the aeration main pipe and aeration branch pipes. The support assembly is fixedly installed below the aeration main pipe and aeration branch pipes.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an aeration device for a wastewater treatment biochemical tank. Background Technology

[0002] In wastewater treatment, the biological treatment tank is a key facility that utilizes the metabolic activity of microorganisms to degrade organic matter in wastewater. The aeration device, on the other hand, is the core equipment for providing sufficient oxygen to the microorganisms within the biological treatment tank, and its performance directly affects the efficiency and effectiveness of wastewater treatment. Existing aeration devices for wastewater treatment biological treatment tanks often employ a simple main pipe plus branch pipe structure, with aeration heads directly installed on the branch pipes. Due to pressure loss during gas flow, aeration heads closer to the air source have a larger air output, while those farther away have a smaller output. This results in significant differences in dissolved oxygen concentration in different areas of the biological treatment tank, affecting microbial growth and metabolism, and consequently reducing wastewater treatment efficiency. Furthermore, the aeration heads, constantly immersed in wastewater, easily accumulate dirt and biofilm, leading to clogged aeration holes and impaired aeration performance. Disassembling the aeration heads is difficult; cleaning and maintenance require removing the entire device from the biological treatment tank, which is cumbersome, labor-intensive, and disrupts the normal operation of wastewater treatment.

[0003] Therefore, the present invention provides an aeration device for a biological treatment tank in sewage treatment to solve the above-mentioned problems. Utility Model Content

[0004] The technical problem this utility model aims to solve is as follows: Existing aeration devices for biological treatment tanks in sewage treatment mostly adopt a simple main pipe plus branch pipe structure, with aeration heads directly installed on the branch pipes. Due to pressure loss during gas flow, the aeration heads closer to the gas source have a larger gas output, while those farther away have a smaller gas output. This results in significant differences in dissolved oxygen concentration in different areas of the biological treatment tank, affecting the growth and metabolism of microorganisms and thus reducing sewage treatment efficiency. Furthermore, the aeration heads are constantly immersed in sewage, making their surfaces prone to the adhesion of dirt and biofilm, leading to blockage of the aeration holes and affecting the aeration effect. The aeration heads are also difficult to disassemble, requiring the entire device to be removed from the biological treatment tank for cleaning and maintenance, which is cumbersome, labor-intensive, and disrupts the normal operation of sewage treatment.

[0005] This utility model provides the following technical solution: an aeration device for a wastewater treatment biochemical tank, comprising an aeration main pipe, aeration branch pipes, a regulating valve, and aeration heads. The aeration main pipe and each aeration branch pipe are hollow structures with openings at both ends. Multiple aeration branch pipes are provided and evenly distributed on both sides of the aeration main pipe. The regulating valve is installed at the connection point between the aeration main pipe and each aeration branch pipe. The aeration heads are fixedly installed on both sides of the aeration branch pipes and are connected to them. The device also includes plugs and a support assembly. The plugs are installed at one end of the aeration main pipe and aeration branch pipes, and threads are provided on the inner wall of one end of the aeration main pipe and aeration branch pipes and on the outer wall of the plug. The plugs are threadedly connected to the aeration main pipe and aeration branch pipes. The support assembly is fixedly installed below the aeration main pipe and aeration branch pipes.

[0006] Preferably, a flow sensor is fixedly installed inside the aeration branch pipe, and the flow sensor is located on the side of the regulating valve away from the main aeration pipe.

[0007] Preferably, the support assembly includes a first support column, a second support column, and a fixing plate. The first support column is installed above the second support column, and the upper end of the first support column is fixedly connected to the lower ends of the aeration main pipe and the aeration branch pipe. An installation hole is provided at the center of the second support column. Threads are provided on the outer wall of the first support column and the inner wall of the installation hole, and the first support column and the second support column are threadedly connected. The fixing plate is fixedly installed at the lower end of the second support column.

[0008] Preferably, a cleaning ring is installed on the outside of the aeration branch pipe, and the inner wall of the cleaning ring is in contact with the outer wall of the aeration branch pipe.

[0009] Preferably, a winding assembly is fixedly installed above the aeration main pipe, and the winding assembly is correspondingly arranged with the cleaning ring.

[0010] Preferably, the winding assembly includes a mounting base, a motor, a connecting shaft, a winding roller, and a connecting rope. The mounting base is fixedly installed on the upper end face of the aeration main pipe, the motor is fixedly installed above the mounting base, two winding rollers are provided, and the connecting shaft and the winding rollers are rotatably installed inside the mounting base. The two winding rollers are fixedly installed on the outside of the connecting shaft, and the upper end of the connecting shaft is connected to the output end of the motor. The connecting rope is wound around the outside of the winding rollers and is fixedly connected to the cleaning ring.

[0011] Preferably, a vertical block is fixedly installed above the plug at one end of the aeration branch pipe, and the vertical block is slidably connected to the connecting rope.

[0012] Preferably, the outer surfaces of both the main aeration pipe and the branch aeration pipe are provided with an anti-corrosion layer, and the anti-corrosion layer is made of epoxy resin material.

[0013] The beneficial effects of this utility model are as follows: This invention adjusts the settings of valves and flow sensors. The flow sensor 11 detects the gas flow in each aeration branch pipe 2 and feeds the detection data back to the control system. The control system controls the valve 10 to adjust the gas flow in each aeration branch pipe 2 independently based on the detection data, so as to ensure that the gas output of each aeration branch pipe 2 is consistent, thereby achieving uniform aeration in the entire biological tank, avoiding uneven aeration due to pressure loss, and ensuring the aeration effect. This invention, through the setting of a winding assembly and a cleaning ring, allows the cleaning ring to slide outside the aeration branch pipe. The motor 13 drives the connecting shaft 14 to rotate, and as the connecting shaft 14 rotates, it drives the two winding rollers 15 to rotate synchronously. The rotation of the winding rollers 15 realizes the winding and unwinding of the connecting rope 9. The winding and unwinding connecting rope 9 applies a pushing and pulling force to the cleaning ring 8, causing the cleaning ring 8 to move back and forth against the outer wall of the aeration branch pipe 2, wiping away dirt and biofilm on the surface of the aeration branch pipe 2 and the aeration head 7, thereby automating the cleaning process, reducing manual operation, and improving cleaning efficiency. This utility model, through the setting of a support component, which is composed of a first support column 16, a second support column 17 and a fixed plate 19, supports the aeration device and ensures the stability of the aeration device during operation. Rotating the first support column 16 changes the length inserted into the mounting hole 18, thereby changing the overall length of the support component 4. This can meet the installation requirements of uneven biological tank bottoms and adjust the installation height of the aeration device in the biological tank, so that the aeration head 7 can adapt to the aeration requirements of sewage at different depths, thus improving the applicability of the device. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 A magnified view of a portion of area A; Figure 3 This is a cross-sectional view of the connection between the aeration branch pipe and the aeration main pipe of this utility model; Figure 4 This is a structural diagram of the winding assembly of this utility model; Figure 5 This is a structural diagram of the support component of this utility model; Figure 6This is a three-dimensional view of the aeration main pipe of this utility model.

[0016] In the diagram: 1. Main aeration pipe; 2. Branch aeration pipe; 3. Plug; 4. Support assembly; 5. Rewinding assembly; 6. Stand block; 7. Aeration head; 8. Cleaning ring; 9. Connecting rope; 10. Regulating valve; 11. Flow sensor; 12. Mounting base; 13. Motor; 14. Connecting shaft; 15. Rewinding roller; 16. First support column; 17. Second support column; 18. Mounting hole; 19. Fixing plate; 20. Anti-corrosion layer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0020] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] This disclosure aims to address the problems of existing aeration devices used in biological treatment tanks for wastewater treatment, which often employ a simple main pipe plus branch pipe structure with aeration heads directly installed on the branch pipes. Due to pressure loss during gas flow, aeration heads closer to the gas source have a larger gas output, while those farther away have a smaller output, resulting in significant differences in dissolved oxygen concentration in different areas of the biological treatment tank. This affects the growth and metabolism of microorganisms, thereby reducing wastewater treatment efficiency. Furthermore, the aeration heads are constantly immersed in wastewater, making their surfaces prone to the adhesion of dirt and biofilm, leading to blockage of the aeration holes and affecting aeration performance. Additionally, the aeration heads are difficult to disassemble, requiring the entire device to be removed from the biological treatment tank for cleaning and maintenance, which is cumbersome, labor-intensive, and disrupts the normal operation of wastewater treatment. In view of this, the present disclosure proposes an aeration device for a wastewater treatment biological treatment tank. By installing regulating valves at the connection points between the main aeration pipe and each aeration branch pipe, and by installing flow sensors inside the branch pipes, the flow sensors detect the gas flow rate in each branch pipe and feed the detection data back to the control system. The control system independently adjusts the gas flow rate of each branch pipe based on the detection data through the regulating valves, ensuring consistent air output from each branch pipe. This achieves uniform aeration throughout the entire biological treatment tank, avoiding uneven aeration due to pressure loss. Furthermore, a sliding cleaning ring is installed on the outside of the branch pipes. As the cleaning ring moves, it wipes away dirt and biofilm from the surfaces of the branch pipes and aeration heads, automating the cleaning process, reducing manual operation, improving cleaning efficiency, and allowing cleaning and maintenance to be completed without removing the device from the biological treatment tank.

[0022] like Figures 1 to 6 As shown, an aeration device for a wastewater treatment biochemical tank includes an aeration main pipe 1, aeration branch pipes 2, a regulating valve 10, and aeration heads 7. The aeration main pipe 1 and each aeration branch pipe 2 are hollow structures with openings at both ends. Multiple aeration branch pipes 2 are provided and evenly distributed on both sides of the aeration main pipe 1. The regulating valve 10 is installed at the connection between the aeration main pipe 1 and each aeration branch pipe 2. The aeration heads 7 are fixedly installed on both sides of the aeration branch pipes 2 and are connected to the aeration branch pipes 2. The device also includes a plug 3 and a support assembly 4. The plug 3 is installed at one end of the aeration main pipe 1 and the aeration branch pipes 2, and threads are provided on the inner wall of one end of the aeration main pipe 1 and the aeration branch pipe 2 and the outer wall of the plug 3. The plug 3 is threadedly connected to the aeration main pipe 1 and the aeration branch pipe 2. The support assembly 4 is fixedly installed below the aeration main pipe 1 and the aeration branch pipe 2. A flow sensor 11 is fixedly installed inside the aeration branch pipe 2, and the flow sensor 11 is located on the side of the regulating valve 10 away from the aeration main pipe 1.

[0023] Air is injected from the air inlet of the main aeration pipe 1. The regulating valve 10 is opened, and air enters the aeration branch pipes 2 sequentially. It then passes through the aeration head 7 to generate microbubbles. These microbubbles rise slowly in the wastewater, making full contact with it. Oxygen gradually dissolves into the wastewater, providing the necessary oxygen for the metabolism of microorganisms in the biological treatment tank. The flow sensor 11 detects the gas flow rate in each aeration branch pipe 2 and feeds the data back to the control system. The control system independently adjusts the gas flow rate of each aeration branch pipe 2 based on the detection data through the regulating valve 10, ensuring consistent air output from each branch pipe 2. This achieves uniform aeration throughout the entire biological treatment tank, preventing uneven aeration due to pressure loss. The aeration head 7 is positioned away from the aeration branch pipes 2 to prevent bubbles from accumulating on their surface, further ensuring effective aeration.

[0024] like Figure 1 and Figure 5 As shown, the support assembly 4 includes a first support column 16, a second support column 17, and a fixing plate 19. The first support column 16 is installed above the second support column 17, and the upper end of the first support column 16 is fixedly connected to the lower end of the aeration main pipe 1 and the aeration branch pipe 2. The second support column 17 has a mounting hole 18 at its center. The outer wall of the first support column 16 and the inner wall of the mounting hole 18 are both provided with threads, and the first support column 16 and the second support column 17 are threadedly connected. The fixing plate 19 is fixedly installed at the lower end of the second support column 17.

[0025] The support component 4 supports the aeration device to ensure the stability of the aeration device during operation. Rotating the first support column 16 changes the length inserted into the installation hole 18, thereby changing the overall length of the support component 4. This can meet the installation requirements of uneven biological tank bottoms and also adjust the installation height of the aeration device in the biological tank, so that the aeration head 7 can adapt to the aeration requirements of sewage at different depths and improve the applicability of the device.

[0026] like Figure 1 , Figure 3 and Figure 4As shown, a cleaning ring 8 is installed on the outside of the aeration branch pipe 2, and the inner wall of the cleaning ring 8 is in contact with the outer wall of the aeration branch pipe 2. A winding assembly 5 is fixedly installed on the top of the aeration main pipe 1, and the winding assembly 5 is correspondingly set with the cleaning ring 8. The winding assembly 5 includes a mounting base 12, a motor 13, a connecting shaft 14, a winding roller 15, and a connecting rope 9. The mounting base 12 is fixedly installed on the upper end face of the aeration main pipe 1, the motor 13 is fixedly installed on the top of the mounting base 12, there are two winding rollers 15, and the connecting shaft 14 and the winding roller 15 are rotatably installed inside the mounting base 12. The two winding rollers 15 are fixedly installed on the outside of the connecting shaft 14, and the upper end of the connecting shaft 14 is connected to the output end of the motor 13. The connecting rope 9 is wound around the outside of the winding roller 15, and the connecting rope 9 is fixedly connected to the cleaning ring 8. A standing block 6 is fixedly installed on the top of the end cap 3 of one end of the aeration branch pipe 2, and the standing block 6 and the connecting rope 9 are slidably connected through it.

[0027] The motor 13 is turned on, which drives the connecting shaft 14 to rotate. As the connecting shaft 14 rotates, it drives the two take-up rollers 15 to rotate synchronously. The rotation of the take-up rollers 15 realizes the winding and unwinding of the connecting rope 9. The winding and unwinding of the connecting rope 9 applies a pushing and pulling force to the cleaning ring 8, causing the cleaning ring 8 to move back and forth against the outer wall of the aeration branch pipe 2, wiping away the dirt and biofilm on the surface of the aeration branch pipe 2 and the aeration head 7. This automates the cleaning process, reduces manual operation, and improves cleaning efficiency. The cleaning and maintenance can be completed without removing the device from the biological treatment tank, which greatly reduces the difficulty and labor intensity of maintenance and avoids the impact of the maintenance process on the normal operation of sewage treatment.

[0028] like Figure 1 As shown, both the outer surfaces of the aeration main pipe 1 and the aeration branch pipe 2 are provided with an anti-corrosion layer 20, and the anti-corrosion layer 20 is made of epoxy resin material.

[0029] Epoxy resin has excellent corrosion resistance, which can effectively isolate corrosive substances in sewage from eroding the main aeration pipe 1 and the branch aeration pipe 2, extend the service life of the aeration device, and reduce the maintenance cost of the device.

[0030] During operation, the first support column 16 is rotated to change the overall length of the support assembly 4 according to the actual depth of the biological treatment tank, so that the lower end of the fixing plate 19 contacts the bottom of the biological treatment tank, and the aeration device is fixed at the bottom of the biological treatment tank, so that the aeration head 7 is in the lower part of the sewage. The air inlet of the aeration main pipe 1 is connected to the air supply pipe of the external air compressor, and the regulating valves 10 corresponding to all aeration branch pipes 2 are opened to keep the air compressor running stably. The compressed air generated by the air compressor enters the interior of the aeration main pipe 1, and then enters the aeration branch pipes 2 through the regulating valves 10. When the gas flows in the aeration branch pipes 2, the compressed air is dispersed into tiny bubbles by the aeration heads 7 on both sides. The tiny bubbles rise slowly in the sewage and come into full contact with the sewage in the process. Oxygen gradually dissolves into the sewage, providing the oxygen required for metabolism of the microorganisms in the biological treatment tank. The flow sensor 11 detects the gas flow in each aeration branch pipe 2 and transmits the data to the control cabinet in real time to ensure the uniformity of aeration. There is no need to stop the aeration operation during cleaning. The motor 13 is started through the control cabinet. When the motor 13 rotates forward, it drives the take-up roller 15 to rotate clockwise, applying a pulling force away from the aeration main pipe 1 to the cleaning ring 8. When the motor 13 rotates in reverse, it drives the take-up roller 15 to rotate counterclockwise, applying a pulling force close to the aeration main pipe 1 to the cleaning ring 8. During the movement, the cleaning ring 8 wipes away the dirt, biofilm and deposits attached to the surface of the aeration branch pipe 2 and the aeration head 7.

[0031] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An aeration device for a wastewater treatment biochemical tank, comprising an aeration main pipe (1), aeration branch pipes (2), a regulating valve (10), and aeration heads (7), wherein the aeration main pipe (1) and each aeration branch pipe (2) are hollow structures with openings at both ends, multiple aeration branch pipes (2) are provided and evenly distributed on both sides of the aeration main pipe (1), the regulating valve (10) is installed at the connection between the aeration main pipe (1) and each aeration branch pipe (2), and the aeration heads (7) are fixedly installed on both sides of the aeration branch pipes (2) and are connected to the aeration branch pipes (2); characterized in that, It also includes a plug (3) and a support assembly (4). The plug (3) is installed at one end of the aeration main pipe (1) and the aeration branch pipe (2), and the inner wall of one end of the aeration main pipe (1) and the aeration branch pipe (2) and the outer wall of the plug (3) are both provided with threads. The plug (3) is threadedly connected to the aeration main pipe (1) and the aeration branch pipe (2). The support assembly (4) is fixedly installed below the aeration main pipe (1) and the aeration branch pipe (2).

2. The aeration device for a wastewater treatment biological treatment tank according to claim 1, characterized in that: A flow sensor (11) is fixedly installed inside the aeration branch pipe (2), and the flow sensor (11) is located on the side of the regulating valve (10) away from the aeration main pipe (1).

3. The aeration device for a wastewater treatment biological treatment tank according to claim 1, characterized in that: The support assembly (4) includes a first support column (16), a second support column (17), and a fixing plate (19). The first support column (16) is installed above the second support column (17), and the upper end of the first support column (16) is fixedly connected to the lower end of the aeration main pipe (1) and the aeration branch pipe (2). The second support column (17) has a mounting hole (18) at its center. The outer wall of the first support column (16) and the inner wall of the mounting hole (18) are both provided with threads, and the first support column (16) and the second support column (17) are threadedly connected. The fixing plate (19) is fixedly installed at the lower end of the second support column (17).

4. The aeration device for a wastewater treatment biological treatment tank according to claim 1, characterized in that: A cleaning ring (8) is installed on the outside of the aeration branch pipe (2), and the inner wall of the cleaning ring (8) is in contact with the outer wall of the aeration branch pipe (2).

5. An aeration device for a wastewater treatment biological treatment tank according to claim 4, characterized in that: A winding assembly (5) is fixedly installed above the aeration main pipe (1), and the winding assembly (5) is correspondingly set with the cleaning ring (8).

6. An aeration device for a wastewater treatment biological treatment tank according to claim 5, characterized in that: The winding assembly (5) includes a mounting base (12), a motor (13), a connecting shaft (14), a winding roller (15), and a connecting rope (9). The mounting base (12) is fixedly installed on the upper end face of the aeration main pipe (1). The motor (13) is fixedly installed above the mounting base (12). There are two winding rollers (15), and the connecting shaft (14) and the winding rollers (15) are rotatably installed inside the mounting base (12). The two winding rollers (15) are fixedly installed on the outside of the connecting shaft (14), and the upper end of the connecting shaft (14) is connected to the output end of the motor (13). The connecting rope (9) is wound around the outside of the winding rollers (15), and the connecting rope (9) is fixedly connected to the cleaning ring (8).

7. An aeration device for a wastewater treatment biological treatment tank according to claim 6, characterized in that: A vertical block (6) is fixedly installed above the plug (3) at one end of the aeration branch pipe (2), and the vertical block (6) is slidably connected to the connecting rope (9).

8. An aeration device for a wastewater treatment biological treatment tank according to claim 1, characterized in that: The outer surfaces of the aeration main pipe (1) and the aeration branch pipe (2) are provided with an anti-corrosion layer (20), and the anti-corrosion layer (20) is made of epoxy resin material.

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