Aeration device and sewage treatment system

Abstract

The invention belongs to the technical field of sewage treatment, and particularly discloses an aeration device and a sewage treatment system.The aeration device is provided with an aeration disc, and the aeration disc comprises a first disc body, a second disc body, a third disc body and an aeration pipe fitting. According to the sewage treatment system, the aeration device is used for carrying out aeration treatment on sewage, each aeration pipe fitting comprises a pipe body and an air bag ring, and the aeration device provided by the invention realizes adjustment of the effective pipe diameter of the pipe body through inflation and deflation of the air bag rings; after the aeration device is blocked, the adhesion strength of the blockage on the pipe wall of the pipe body can be reduced in a manner of increasing the effective pipe diameter, and the blockage is further flushed out by matching with air pressure, so that the problem that the aeration device is easy to block is effectively solved and avoided. Besides, the exhaust state of the aeration device is not affected, the exhausted gas forms regular and stable bubble upwelling, good convection and mixing effects with water flow are formed, and the sewage treatment effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to an aeration device and a sewage treatment system. Background Art

[0002] If rural sewage is discharged directly into rivers without effective treatment, it will lead to eutrophication of water bodies, promote excessive growth of aquatic plants such as algae, consume dissolved oxygen in the water, affect the survival of aquatic organisms, and seriously deteriorate the ecological environment of the river.

[0003] To effectively manage rivers and improve their water quality and ecological environment, rural sewage discharge must be controlled and treated. During the river management process, a series of measures are implemented to reduce pollution from rural sewage. These include the construction of rural sewage treatment facilities, including small sewage treatment plants and artificial wetlands, to collect and treat rural domestic and industrial wastewater, ensuring it meets discharge standards before being released into the river. Taking the management of the Luan River mainstream in Luanping County as an example, to prevent villagers in surrounding villages from directly discharging domestic water into the river, a comprehensive sewage collection network has been constructed in areas with suitable conditions. This centralized collection of sewage is then transferred to the municipal sewage collection network for treatment at sewage treatment plants. For villages surrounding rivers that lack access to the municipal sewage collection network, small-scale sewage treatment facilities, such as biofilters and integrated sewage treatment plants, have been constructed. Aeration tanks are a common structure in sewage treatment systems, often equipped with various devices to meet the aerobic metabolic needs of microorganisms and promote the degradation of organic matter. The most critical of these devices is the aeration equipment, which has the risk of aeration disc clogging. In the prior art, some sewage treatment equipment's aeration discs have been improved to avoid clogging by using anti-clogging structures or adding anti-clogging devices. However, these improved aeration discs with anti-clogging features cannot allow air to diffuse upward from the aeration holes of the aeration discs into the water body evenly to form a more regular and stable bubble upflow, which greatly affects the contact between the bubbles and the water body, thereby reducing the oxygen transfer efficiency and failing to meet the oxygen needs of microorganisms in sewage treatment, resulting in reduced sewage treatment effects.

[0004] For example, Chinese invention patent publication number CN117049717B discloses a rural sewage treatment device. The disclosed aeration element incorporates a lever-based cleaning mechanism between two aeration holes. Two poke plugs are used to poke the aeration holes, and combined with the impact of gas, blockages are flushed from the aeration holes. Because the poke plugs are secured to the aeration holes via a mounting bracket, a balance bar, and other components, they block the gas exiting the aeration holes. This prevents the gas from forming a regular, stable upward flow of bubbles, creating good convection and mixing with the water flow within the tank, and promoting water circulation. This significantly reduces oxygen transfer efficiency, preventing pollutants in the sewage from fully contacting and reacting with microorganisms and oxygen, resulting in reduced sewage treatment effectiveness. Another example is Chinese invention patent publication number CN110627231B, which discloses a microporous disc aerator. This disc uses a column to secure a baffle on the aeration disc surface, combined with a cylindrical baffle to prevent sludge from settling on the membrane and clogging the micropores. Similarly, the air discharged from the surface of the aeration plate will be blocked by the baffle and the cylindrical baffle and will be dispersed to the surroundings, so that a relatively regular and stable bubble upflow cannot be formed, thereby reducing the sewage treatment effect. Summary of the Invention

[0005] In view of the above problems, the purpose of the present invention is to provide an aeration device and a sewage treatment system, which can better meet the demand for oxygen of microorganisms in sewage treatment and achieve better sewage treatment effect.

[0006] The technical solution of the present invention is: an aeration device, comprising an aeration plate, wherein the aeration plate comprises a first plate body, a second plate body, a third plate body and an aeration pipe.

[0007] An air inlet is provided at the center of the first disk, and a first air inlet pipe is provided at the air inlet. The second disk is arranged parallel to the first disk, and the edge of the second disk is sealedly connected to the edge of the first disk. The second disk and the first disk form a ventilation cavity, and the second disk is provided with a plurality of first through holes, which are connected to the ventilation cavity. The third disk is arranged parallel to the second disk, and the edge of the third disk is sealedly connected to the edge of the second disk. The third disk and the second disk form an arrangement cavity, and the third disk is provided with a plurality of second through holes, and the positions of the second through holes correspond one to one with the positions of the first through holes. There are multiple aeration pipe fittings, and the multiple aeration pipe fittings are arranged in the arrangement cavity. Each aeration pipe fitting includes a pipe body and an air bag ring. The middle section of the pipe body is a flexible pipe body, one end of the pipe body is connected to the first through hole, and the other end is connected to the second through hole at the corresponding position; the air bag ring is sleeved on the pipe body and located on the flexible pipe body.

[0008] A second air inlet pipe is arranged in the arrangement cavity, one end of the second air inlet pipe extends to the outside of the arrangement cavity and is provided with an interface, and the other end is connected to the airbag ring through a branch pipe, and the interface is used to connect with the inflation and deflation part to realize inflation and deflation of the airbag ring; when the airbag ring is full of air, the effective diameter of the tube body is minimized, and the air enters the ventilation cavity through the first air inlet pipe, and is then discharged through the tube body through the second through hole to realize aeration; when the tube body is blocked, the airbag ring is deflated to increase the effective diameter of the tube body, and at the same time, in conjunction with the aeration process, the blockage is flushed out of the tube body by air pressure.

[0009] During aeration, air is introduced into the aeration cavity formed by the first and second plates through the first air inlet pipe, then discharged through the second through-hole in the third plate via the aeration pipe. Multiple aeration pipes are evenly distributed within the cavity formed by the second and third plates. This structural design ensures a more stable aeration process, ensuring uniform aeration and more balanced distribution of dissolved oxygen in the water. This improves water treatment efficiency and meets the aeration requirements of various water environments.

[0010] When the tube body is blocked, the air bag ring installed on the flexible tube body can be deflated through the second air inlet pipe to increase the effective diameter of the tube body. At the same time, with the air pressure during the aeration process, the blockage can be flushed out of the tube body to achieve self-cleaning function. This design effectively solves the problem of easy blockage of aeration pipes, reduces the workload and frequency of manual maintenance, reduces operating costs, and improves the reliability and service life of the aeration device.

[0011] Furthermore, the arrangement cavity is filled with a filling plate, which is provided with a plurality of through grooves, and the aeration pipes are arranged in the through grooves in a one-to-one correspondence. The shape of the through grooves is consistent with the shape of the aeration pipes when the airbag ring is inflated.

[0012] The through grooves on the filling plate provide precise positioning for the aeration pipe fittings, allowing them to be securely installed in the arrangement cavity. When the aeration device is in operation, it can effectively prevent the aeration pipe fittings from being displaced or shaken due to factors such as water flow impact and air pressure fluctuations, thereby extending the service life of the aeration pipe fittings. Moreover, the through grooves can also provide a certain degree of protection for the aeration pipe fittings, preventing them from being damaged by collisions with external objects. Most importantly, the through grooves on the filling plate limit the space. When the airbag ring is inflated, it can effectively ensure that the flexible tube body in the middle section of the tube body is squeezed to reduce the tube diameter, effectively avoiding the problem of the airbag ring expanding toward the side away from the tube body, resulting in poor squeezing effect on the flexible tube body.

[0013] Furthermore, the aeration disc also includes an edge plate, a frame-like structure connected end to end. The first, second, and third discs have the same structure, and the edge plate is positioned around the edges of the first, second, and third discs and is sealed. The edge plate greatly enhances the sealing of the ventilation cavity and the arrangement cavity. This effectively prevents air leakage during aeration, ensuring that air enters the ventilation cavity from the first air inlet pipe according to the designed path and is then discharged from the second through-hole through the aeration pipe. This ensures aeration efficiency and quality, and avoids energy waste and poor aeration results caused by leakage. Furthermore, during operation, the aeration device can effectively resist external forces such as water flow impact and air pressure changes, preventing displacement and separation between the discs, extending the service life of the aeration disc and ensuring stable operation under complex operating conditions. The first, second, and third discs have the same structure, and combined with the sealed connection of the edge plate, the manufacturing process of the entire aeration disc is more unified and standardized. This not only reduces production difficulty and cost, but also facilitates mass production and quality control, ensuring that each aerator disc meets the same performance standards.

[0014] Furthermore, the first disk, the second disk, the third disk, the filling plate and the edge plate are an integrated structure, and the first disk, the second disk, the third disk, the filling plate and the edge plate constitute the base plate. This integrated design eliminates the connection gaps between the components, enabling it to withstand greater external forces, such as water flow impact, stress during installation, etc., effectively reducing failures caused by loose or separated components, and extending the service life of the aeration device. Since the components form an integrated structure, there are no connection gaps between the components, which effectively avoids the problem of air leakage. This is crucial for the efficient operation of the aeration device, and can ensure that air smoothly enters the ventilation cavity from the first air inlet pipe and is then discharged through the aeration pipe for aeration, thereby improving aeration efficiency and reducing energy waste.

[0015] Furthermore, the base plate is a cylindrical structure, and the aeration disc also includes an adjustment seat, a cylindrical groove is provided on the adjustment seat, a first thread is provided on the inner side of the cylindrical groove, a second thread matching the first thread is provided on the outer wall of the base plate, and the base plate thread is provided in the cylindrical groove. The base plate is a cylindrical structure and is connected to the adjustment seat by a thread. During installation, it is only necessary to screw the base plate into the cylindrical groove of the adjustment seat. The operation is simple and does not require additional complex fixing tools and processes. In addition, after the aeration device is installed, the depth or angle of the aeration disc can be precisely adjusted according to actual needs by rotating the base plate to adapt to different water depths, water flow conditions, etc., greatly improving the flexibility of installation and the applicability of the device.

[0016] Furthermore, the ratio of the base plate's height to the cylindrical groove's depth is 1:3-5, and the base plate can be rotated to adjust its depth within the cylindrical groove. This structure allows the base plate to have a wide adjustment range within the cylindrical groove. By rotating the base plate, its depth within the cylindrical groove can be varied over a wide range, meeting precise aeration disc depth requirements under different operating conditions.

[0017] Furthermore, the aeration device also includes an air intake network, with multiple aeration plates, which are evenly distributed along the air intake network. The air intake network is connected to the first air intake pipe, and the air intake network is used to connect to the air supply device.

[0018] A sewage treatment system utilizes the aeration device to perform aeration treatment on sewage.

[0019] Furthermore, the sewage treatment system includes a treatment tank, water inlet equipment, and drainage equipment. A partition is provided inside the treatment tank, which divides the interior of the treatment tank into an aeration chamber and a sedimentation tank. A through groove is provided at the lower end of the partition, which is used to connect the bottom of the aeration chamber with the bottom of the sedimentation tank. A connecting pipe is provided near the upper end of the partition, one end of the connecting pipe is connected to the aeration chamber, and the other end is connected to the sedimentation tank. The aeration device is provided at the bottom of the aeration chamber, on the side of the aeration chamber away from the sedimentation tank. The water inlet equipment is connected to the aeration chamber and is used to introduce sewage into the aeration chamber. The drainage equipment is connected to the sedimentation tank and is used to discharge the treated sewage from the upper layer of the sedimentation tank.

[0020] Furthermore, the sewage treatment system also includes a circulation auxiliary component, which includes a curved plate and an inclined base.

[0021] The curved plate is fixed on the side wall of the aeration chamber and is located above the aeration device. The curved plate is used to guide the gas discharged from the aeration device in the upper area of ​​the aeration chamber, so that the gas moves toward the side close to the partition plate. When it moves to the partition plate, it is blocked by the partition plate and moves downward or in the opposite direction along the partition plate.

[0022] The longitudinal cross-section of the inclined base is a right-angled triangle structure. The inclined base is arranged at the bottom of the aeration chamber, on the side of the aeration device close to the partition plate, and the higher side of the inclined base is close to the partition plate. The side wall of the inclined base close to the partition plate is used to block the sludge inside the sedimentation tank, and the upper surface of the inclined base is used to guide the gas blocked by the partition plate, so that it moves along the slope toward the side away from the partition plate.

[0023] Compared with the prior art, the present invention has the following advantages: the aeration device proposed in the present invention adjusts the effective diameter of the tube body by inflating and deflating the air bag ring. After a blockage, the effective diameter can be increased to reduce the adhesion strength of the obstruction on the tube body wall, and the obstruction can be flushed out by combining air pressure, effectively solving the problem of the aeration device being easily clogged. In addition, the exhaust state of the aeration device is not affected. The exhausted gas forms a relatively regular and stable bubble upflow, which forms a good convection and mixing effect with the water flow, effectively promoting the circulation of the water body, greatly improving the oxygen transfer efficiency, allowing pollutants in the sewage to fully contact and react with microorganisms and oxygen, and improving the sewage treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of an aeration plate according to embodiment 1 of the present invention; Figure 2 This invention Figure 1 Enlarged view of point A; Figure 3 Schematic diagram of the external structure of the aeration pipe of the present invention; Figure 4 Schematic diagram of the internal structure of the aeration pipe of the present invention; Figure 5 is a partial cross-sectional view of the aeration plate of the present invention; Figure 6 This is a schematic structural diagram of the aeration plate in Example 2 of the present invention; Figure 7 It is a partial structural diagram of the aeration plate and the air inlet pipe network of the present invention; Figure 8 It is a structural diagram of the sewage treatment system of Example 3 of the present invention.

[0025] Among them, 1-aeration plate, 10-base plate, 101-ventilation cavity, 102-layout cavity, 11-first plate body, 12-second plate body, 13-third plate body, 14-aeration pipe fitting, 141-tube body, 142-air bag ring, 15-edge plate, 16-adjustment seat, 160-cylindrical groove, 2-air inlet pipe network, 3-treatment tank, 30-partition plate, 301-through groove, 302-connecting pipe, 4-circulation auxiliary component, 41-arc plate, 42-inclined base. DETAILED DESCRIPTION

[0026] The following combination Figures 1 to 8, a detailed description of the specific embodiments of the present invention is provided. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be construed as limiting the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] It should be noted that the circuit connections involved in the present invention all adopt conventional circuit connection methods and do not involve any innovation.

[0029] Example 1 like Figure 1 An aeration device shown has an aeration plate 1 , which includes a first plate body 11 , a second plate body 12 , a third plate body 13 and an aeration pipe 14 .

[0030] like Figure 1 、 Figure 2 As shown, an air inlet is provided at the center of the first disk 11, and a first air inlet pipe is provided at the air inlet. The second disk 12 is arranged in parallel with the first disk 11, and the edge of the second disk 12 is sealed and connected to the edge of the first disk 11. The second disk 12 and the first disk 11 form a ventilation cavity 101, and the second disk 12 is provided with a plurality of first through holes, and the first through holes are connected to the ventilation cavity 101. The third disk 13 is arranged in parallel with the second disk 12, and the edge of the third disk 13 is sealed and connected to the edge of the second disk 12. The third disk 13 and the second disk 12 form an arrangement cavity 102, and the third disk 13 is provided with a plurality of second through holes, and the positions of the second through holes correspond one to one with the positions of the first through holes. There are multiple aeration pipe fittings 14, and the multiple aeration pipe fittings 14 are all arranged in the arrangement cavity 102, as shown Figure 3 、 Figure 4 、 Figure 5 As shown, each aeration pipe 14 includes a pipe body 141 and an air bag ring 142. The middle section of the pipe body 141 is a flexible pipe body. One end of the pipe body 141 is connected to the first through hole, and the other end is connected to the second through hole of the corresponding position. The air bag ring 142 is sleeved on the pipe body 141 and is located at the flexible pipe body.

[0031] A second air inlet pipe is arranged in the arrangement cavity 102, one end of the second air inlet pipe extends to the outside of the arrangement cavity 102 and is provided with an interface, and the other end is connected to the airbag ring 142 through a branch pipe, and the interface is used to connect with the inflation and deflation parts to realize the inflation and deflation of the airbag ring 142; when the airbag ring 142 is full of air, the effective diameter of the tube body 141 is the smallest, and the air enters the ventilation cavity 101 through the first air inlet pipe, and is then discharged through the second through hole of the tube body 141 to realize aeration; when the tube body 141 is blocked, the airbag ring 142 is deflated to increase the effective diameter of the tube body 141, and at the same time, in conjunction with the aeration process, the blockage is flushed out of the tube body 141 by air pressure.

[0032] During aeration, air is introduced into the ventilation cavity 101 formed by the first and second plates 11, 12 through the first air inlet pipe, and then discharged through the second through-holes in the third plate 13 via the aeration pipe 14 for aeration. Multiple aeration pipes 14 are evenly distributed within the arrangement cavity 102 formed by the second and third plates 12, 13. This structural design stabilizes the aeration process, ensures uniform aeration, and achieves a more balanced distribution of dissolved oxygen in the water, thereby improving water treatment efficiency and meeting the aeration requirements of various water environments.

[0033] When tube body 141 becomes clogged, the airbag ring 142, which is mounted on the flexible tube body of tube body 141, can be deflated through the second air inlet pipe, thereby increasing the effective diameter of tube body 141. Simultaneously, the air pressure during aeration can flush the obstruction out of tube body 141, achieving a self-cleaning function. This design effectively solves the problem of easy clogging of aeration tube 14, reduces the workload and frequency of manual maintenance, lowers operating costs, and improves the reliability and service life of the aeration device. It should be noted that during the aeration process, since airbag ring 142 is inflated, the effective diameter of tube body 141 is small, so obstructions contact the inner wall of tube body 141. However, when airbag ring 142 is deflated, the effective diameter of tube body 141 increases, resulting in a loose contact between the obstruction and the inner wall of tube body 141, which can then be flushed out of tube body 141 using air pressure.

[0034] Moreover, during actual aeration, the effective diameter of the tube body 141 can be changed by inflating and deflating the airbag ring 142 through the second air inlet pipe, thereby adjusting the air flow. When the airbag ring 142 is filled with air, the effective diameter of the tube body 141 is the smallest, and the air flow is relatively small; when the airbag ring 142 is deflated, the effective diameter of the tube body 141 increases, and the air flow increases. This adjustable aeration method can flexibly adjust the aeration intensity according to actual needs, adapt to different working conditions and processing requirements, and improve the adaptability and flexibility of the aeration device. The airbag ring 142 is mounted on the flexible tube body of the tube body 141. This design can effectively adjust the diameter of the tube body 141 without causing permanent damage to the tube body 141. The inflation and deflation of the airbag ring 142 are simple to operate and can be achieved through the second air inlet pipe. It is easy to control and can quickly respond to the needs of aeration flow adjustment and self-cleaning.

[0035] The various components of the aeration device work in tandem. The first air inlet pipe, vent chamber 101, aeration tube 14, and second through-hole collectively perform the aeration function. The second air inlet pipe and airbag ring 142 regulate the aeration flow and enable self-cleaning of the tube body 141. This multi-component collaborative design concept enhances the functionality and performance of the aeration device.

[0036] Preferably, the arrangement cavity 102 is filled with a filling plate having a plurality of through grooves provided on the filling plate, and the aeration pipes 14 are arranged in the through grooves one by one. The shape of the through grooves is consistent with the shape of the aeration pipes 14 when the airbag ring 142 is filled with air.

[0037] The through grooves on the filling plate provide precise positioning for the aeration pipe 14, allowing it to be firmly installed in the arrangement cavity 102. When the aeration device is in operation, it can effectively prevent the aeration pipe 14 from being displaced or shaken due to factors such as water flow impact and air pressure fluctuations, thereby extending the service life of the aeration pipe 14. Moreover, the through grooves can also play a certain protective role for the aeration pipe 14, preventing it from being damaged by collisions with external objects. Most importantly, the through grooves on the filling plate limit the space. When the airbag ring 142 is inflated, it can effectively ensure that the flexible tube body in the middle section of the tube body 141 is squeezed to achieve a reduction in the tube diameter, effectively avoiding the problem of the airbag ring 142 expanding toward the side away from the tube body 141, resulting in poor squeezing effect on the flexible tube body.

[0038] In addition, the shape of the through groove is consistent with the shape of the aeration tube 14 when the airbag ring 142 is filled with air, which helps to guide the airflow evenly through the aeration tube 14. When air enters the ventilation cavity 101 from the first air inlet pipe and then flows through the aeration tube 14, the special shape of the through groove can make the airflow discharge more smoothly, further improving the uniformity of aeration, making the distribution of dissolved oxygen in the water more reasonable, and improving the water treatment effect. The filling plate filled in the arrangement cavity 102 effectively enhances the structural strength of the entire aeration disk. When facing different working environments and pressures, the filling plate can share some external forces, reduce the pressure on the first disk 11, the second disk 12 and the third disk 13, avoid deformation of the disk due to excessive pressure, and ensure the stable operation of the aeration device.

[0039] Preferably, Figure 1 As shown, the aeration plate 1 also includes an edge plate 15, which is a frame-shaped structure connected end to end. The first plate body 11, the second plate body 12, and the third plate body 13 have the same structure. The edge plate 15 is arranged around the edges of the first plate body 11, the second plate body 12, and the third plate body 13 and is sealed.

[0040] The edge plate 15 greatly enhances the sealing performance of the ventilation chamber 101 and the arrangement chamber 102. This can effectively prevent air leakage during the aeration process, ensuring that air enters the ventilation chamber 101 from the first air inlet pipe according to the designed path, and then is discharged from the second through hole through the aeration pipe 14, thereby ensuring aeration efficiency and quality, and avoiding energy waste and poor aeration effects caused by air leakage. In addition, when the aeration device is in operation, it can effectively resist external forces such as water flow impact and air pressure changes, prevent displacement and separation between the discs, extend the service life of the aeration disc 1, and ensure its stable operation under complex working conditions. The first disc 11, the second disc 12, and the third disc 13 have the same structure, and the sealing connection of the edge plate 15 makes the manufacturing process of the entire aeration disc 1 more unified and standardized. This not only reduces production difficulty and cost, but also facilitates mass production and quality control, ensuring that each aeration disc 1 can meet the same performance standards.

[0041] Preferably, the first disk body 11, the second disk body 12, the third disk body 13, the filling plate and the edge plate 15 are an integrated structure, and the first disk body 11, the second disk body 12, the third disk body 13, the filling plate and the edge plate 15 constitute the base plate 10. This integrated design eliminates the connection gaps between the components, enabling it to withstand greater external forces, such as water flow impact, stress during installation, etc., effectively reducing failures caused by loose or separated components, and extending the service life of the aeration device. In addition, during the manufacturing process, the one-piece base plate 10 reduces the tedious process of separately processing and reassembling multiple components, reduces production difficulty and cost, improves production efficiency, and facilitates quality control. During installation, it is only necessary to install the base plate 10 as a whole in place, without the need to install and debug each component one by one, saving a lot of manpower and time costs, and enabling the aeration device to be put into use faster. During long-term use, the base plate 10 with an integrated structure will not affect performance due to mutual displacement or wear between components, and has higher structural stability and reliability. Whether under frequent start-stop conditions or in complex water quality environments, it can maintain good working condition, reduce the frequency of maintenance and repairs, and lower operating costs.

[0042] Because all components form an integrated structure, there are no gaps between them, effectively preventing air leakage. This is crucial for the efficient operation of the aeration device, ensuring that air can smoothly enter the ventilation cavity 101 from the first air inlet pipe and then be discharged through the aeration pipe 14 for aeration, thereby improving aeration efficiency and reducing energy waste.

[0043] Preferably, Figure 7 、 Figure 8 As shown, the aeration device also includes an air inlet network 2 and multiple aeration discs 1, which are evenly distributed along the inlet network 2. The inlet network 2 is connected to the first air inlet pipe and is used to connect to the air supply device. The evenly distributed aeration discs 1 and the inlet network 2 can evenly distribute gas throughout the treatment area, avoiding localized under- or over-aeration and comprehensively improving the aeration effect and treatment efficiency of the water body.

[0044] It should be noted that the gas filling and discharging parts of this embodiment adopt commercially available gas cylinders.

[0045] Furthermore, considering factors such as cost or environmental limitations, the inflator and deflation components can be omitted in actual use. In this case, the interface of the second air intake pipe is connected to the air intake network 2, and the airbag ring 142 is inflated or deflated in conjunction with a tee and a solenoid valve. Specifically, the interface of the second air intake pipe is connected to one end of the tee, the other end of the tee is connected to the outlet of the first solenoid valve, and the last end of the tee is connected to the inlet of the second solenoid valve, which in turn is connected to the air intake network 2. To inflate airbag ring 142, the first solenoid valve is opened and the second solenoid valve is closed, allowing gas within the air intake network 2 to be filled into airbag ring 142. To deflate airbag ring 142, the first solenoid valve is closed and the second solenoid valve is opened. The air passing through tube body 141 squeezes airbag ring 142, causing it to return to its deflated state due to its own deformation force, thus deflation. During this process, since the flow rate of the gas flow in the air intake pipe network 2 is constant, when the airbag ring 142 is inflated, a part of the gas in the air intake pipe network 2 flows into the airbag ring 142, and the amount of gas passing through the tube body 141 is relatively reduced. At this time, the airbag ring 142 is easier to inflate; and when the airbag ring 142 is deflated, all the gas in the air intake pipe network 2 is discharged through the tube body 141, and at this time the airbag ring 142 will be squeezed and the airbag ring 142 will be deflated.

[0046] Example 2 The difference from Example 1 is that: preferably, Figure 6 As shown, the base plate 10 is a cylindrical structure, and the aeration disc 1 also includes an adjustment seat 16. The adjustment seat 16 is provided with a cylindrical groove 160, and a first thread is provided on the inner side of the cylindrical groove 160. A second thread matching the first thread is provided on the outer wall of the base plate 10, and the base plate 10 is threadedly arranged in the cylindrical groove 160. The base plate 10 is a cylindrical structure and is connected to the adjustment seat 16 by a thread. During installation, it is only necessary to screw the base plate 10 into the cylindrical groove 160 of the adjustment seat 16. The operation is simple and does not require additional complex fixing tools and processes. In addition, after the aeration device is installed, the depth or angle of the aeration disc 1 can be accurately adjusted according to actual needs by rotating the base plate 10 to adapt to different water depths, water flow conditions, etc., which greatly improves the flexibility of installation and the applicability of the device.

[0047] Preferably, the ratio of the height of the base plate 10 to the depth of the cylindrical groove 160 is 1:3-5, and the base plate 10 can be rotated to adjust its depth position within the cylindrical groove 160. This structure allows the base plate 10 to have a large adjustment range within the cylindrical groove 160. By rotating the base plate 10, its depth position within the cylindrical groove 160 can be varied over a wide range, meeting the precise depth requirements of the aeration disc 1 under different operating conditions. For example, in shallow water bodies, the base plate 10 can be rotated to a shallower depth, bringing the aeration disc 1 closer to the water surface and improving aeration efficiency; in deeper water bodies, it can be rotated to a deeper position to ensure a uniform and stable aeration effect.

[0048] Example 3 A sewage treatment system uses the aeration device proposed in Example 2 to aerate sewage.

[0049] Preferably, Figure 8 As shown, the sewage treatment system includes a treatment tank 3, a water inlet device, and a drainage device. A partition plate 30 is provided inside the treatment tank 3. The partition plate 30 divides the interior of the treatment tank 3 into an aeration chamber and a sedimentation tank. A through groove 301 is provided at the lower end of the partition plate 30. The through groove 301 is used to connect the bottom of the aeration chamber with the bottom of the sedimentation tank. A connecting pipe 302 is provided near the upper end of the partition plate 30. One end of the connecting pipe 302 is connected to the aeration chamber, and the other end is connected to the sedimentation tank. The aeration device is provided at the bottom of the aeration chamber, on the side of the aeration chamber away from the sedimentation tank. The water inlet device is connected to the aeration chamber for introducing sewage into the aeration chamber. The drainage device is connected to the sedimentation tank for discharging the treated sewage from the upper layer of the sedimentation tank.

[0050] Preferably, the sewage treatment system further includes a circulation auxiliary component 4 , which includes a curved plate 41 and an inclined base 42 .

[0051] The curved plate 41 is fixed to the side wall of the aeration chamber, located above the aeration device. The curved plate 41 is used to guide the gas discharged from the aeration device in the upper area of ​​the aeration chamber, causing the gas to move toward the side close to the partition plate 30. When it moves to the partition plate 30, it is blocked by the partition plate 30 and moves downward or in the opposite direction along the partition plate 30. The inclined base 42 has a right triangle structure in longitudinal cross section. The inclined base 42 is arranged at the bottom of the aeration chamber, on the side of the aeration device close to the partition plate 30. The higher side of the inclined base 42 is close to the partition plate 30. The side wall of the inclined base 42 close to the partition plate 30 is used to block the sludge inside the sedimentation tank. The upper surface of the inclined base 42 is used to guide the gas blocked by the partition plate 30, causing it to move along the slope toward the side away from the partition plate 30.

[0052] like Figure 8As shown, the gas discharged from the aeration device is discharged vertically until it reaches the curved plate 41. The curved plate guides the gas toward the side near the partition plate 30. After passing through the partition plate 30, the gas passes through the upper surface of the inclined base 42, forming a circulation system. During this process, the gas discharged from the aeration device forms a relatively regular and stable upward flow of bubbles, which circulates within the aeration chamber. This creates a good convection and mixing effect with the water flow, effectively promoting the circulation of the water, greatly improving the oxygen transfer efficiency, and allowing pollutants in the sewage to fully contact and react with microorganisms and oxygen, thereby improving the sewage treatment effect.

[0053] The specific models of the above electronic components are not particularly specified, and common products available on the market can be selected as long as they can meet the use requirements of the present invention.

[0054] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. An aeration device having an aeration disk, characterized in that: The aeration plate comprises: The first disk body has an air inlet hole at its center, and a first air inlet pipe is provided at the air inlet hole; The second plate is arranged in parallel with the first plate, the edge of the second plate is sealed with the edge of the first plate, the second plate and the first plate form a ventilation cavity, and the second plate is provided with a plurality of first through holes, the first through holes being in communication with the ventilation cavity; a third plate body arranged parallel to the second plate body, with an edge of the third plate body sealedly connected to an edge of the second plate body, the third plate body and the second plate body forming an arrangement cavity, and a plurality of second through holes being provided on the third plate body, the positions of the second through holes corresponding to the positions of the first through holes one by one; There are multiple aeration pipe fittings, all arranged in the arrangement cavity, and each aeration pipe fitting includes: a pipe body, the middle section of which is a flexible pipe body, one end of the pipe body is connected to the first through hole, and the other end is connected to the second through hole at the corresponding position; an airbag ring, which is sleeved on the pipe body and located at the flexible pipe body; a second air inlet pipe is arranged in the arrangement cavity, one end of the second air inlet pipe extends to the outside of the arrangement cavity and is provided with an interface, and the other end is connected to the airbag ring through a branch pipe, and the interface is used to connect with the inflation and deflation part to realize inflation and deflation of the airbag ring; when the airbag ring is inflated, the effective diameter of the pipe body is the smallest, and the air enters the ventilation cavity through the first air inlet pipe, and is then discharged through the pipe body through the second through hole to realize aeration; when the pipe body is blocked, the airbag ring is deflated to increase the effective diameter of the pipe body, and at the same time, in conjunction with the aeration process, the blockage is flushed out of the pipe body by air pressure.

2. An aeration device according to claim 1, characterized in that: The arrangement cavity is filled with a filling plate, which is provided with a plurality of through slots. The aeration pipes are arranged in the through slots in a one-to-one correspondence. The shape of the through slots is consistent with the shape of the aeration pipes when the airbag ring is filled with air.

3. An aeration device according to claim 2, characterized in that: The aeration plate also includes an edge plate, which is a frame-shaped structure connected end to end. The first plate body, the second plate body, and the third plate body have the same structure. The edge plate is arranged around the edges of the first plate body, the second plate body, and the third plate body and is sealed.

4. An aeration device according to claim 3, characterized in that: The first tray, the second tray, the third tray, the filling plate and the edge plate are an integrated structure, and the first tray, the second tray, the third tray, the filling plate and the edge plate constitute a base plate.

5. An aeration device according to claim 4, characterized in that: The base plate is a cylindrical structure, and the aeration plate also includes an adjustment seat, which is provided with a cylindrical groove, and a first thread is provided inside the cylindrical groove. A second thread matching the first thread is provided on the outer wall of the base plate, and the base plate thread is provided in the cylindrical groove.

6. An aeration device according to claim 5, characterized in that: The ratio of the height of the base plate to the depth of the cylindrical groove is 1:3-5, and the base plate can be adjusted to different depth positions in the cylindrical groove by rotating the base plate.

7. An aeration device according to claim 1, characterized in that: It also includes an air intake network, with multiple aeration plates, which are evenly distributed along the air intake network. The air intake network is connected to the first air intake pipe, and the air intake network is used to connect to the air supply device.

8. A sewage treatment system, characterized in that: The sewage is treated by aeration using the aeration device described in any one of claims 1 to 7.

9. A sewage treatment system according to claim 8, characterized in that: include: The treatment tank is provided with a partition plate inside, which divides the interior of the treatment tank into an aeration chamber and a sedimentation tank. The lower end of the partition plate is provided with a through groove, which is used to connect the bottom of the aeration chamber with the bottom of the sedimentation tank. A connecting pipe is provided near the upper end of the partition plate, one end of the connecting pipe is connected to the aeration chamber, and the other end is connected to the sedimentation tank. The aeration device is provided at the bottom of the aeration chamber, on the side of the aeration chamber away from the sedimentation tank. A water inlet device is connected to the aeration chamber and is used to introduce sewage into the aeration chamber; The drainage equipment is connected to the sedimentation tank and is used to discharge the treated sewage in the upper layer of the sedimentation tank.

10. A sewage treatment system according to claim 9, characterized in that: The sewage treatment system further includes a circulation auxiliary component, which includes: The curved plate is fixed on the side wall of the aeration chamber and is located above the aeration device. The curved plate is used to guide the gas discharged from the aeration device in the upper area of ​​the aeration chamber, so that the gas moves toward the side close to the partition plate. When it moves to the partition plate, it is blocked by the partition plate and moves downward or in the opposite direction along the partition plate. The inclined base has a longitudinal cross-section of a right-angled triangle structure. The inclined base is arranged at the bottom of the aeration chamber, on the side of the aeration device close to the partition plate, with the higher side of the inclined base close to the partition plate. The side wall of the inclined base close to the partition plate is used to block the sludge inside the sedimentation tank, and the upper surface of the inclined base is used to guide the gas blocked by the partition plate, so that it moves along the slope toward the side away from the partition plate.

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