Intelligent regulation and control sewage treatment system and aeration device thereof

Abstract

The invention relates to the field of sewage treatment, in particular to an intelligent regulation and control sewage treatment system and an aeration device thereof. The intelligent regulation and control sewage treatment system is characterized by comprising a multi-parameter monitoring module, a dynamic decision module and an aeration execution module, the multi-parameter monitoring module is used for collecting the aeration rate, COD (Chemical Oxygen Demand) concentration, ammonia nitrogen concentration and DO (Dissolved Oxygen) parameters in actual unit time in real time; the dynamic decision module is used for analyzing and sending out a control command according to the COD concentration, the ammonia nitrogen concentration and the DO parameter information; and the aeration execution module is used for receiving the control command and adjusting the aeration rate in unit time according to the control command. The multi-parameter monitoring module monitors the actual unit time aeration rate, the COD concentration, the ammonia nitrogen concentration and the DO parameter, the optimal unit time aeration rate parameter is calculated according to the COD concentration, the ammonia nitrogen concentration and the DO parameter, the parameter is compared with the actual unit time aeration rate, and the actual unit time aeration rate is adjusted to be close to the optimal unit time aeration rate.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment, and in particular to an intelligently regulated sewage treatment system and an aeration device thereof. Background Art

[0002] The sewage treatment system includes a regulating tank, a neutralization and coagulation tank, a primary sedimentation tank, a sedimentation tank, an anaerobic tank, an aerobic tank and an MBR tank. The aerobic tank is a tank that, after anaerobic decomposition has significantly degraded COD, uses aeration to allow microorganisms to further degrade pollutants such as COD and NH3-N in the sewage under sufficient oxygen supply.

[0003] The existing sewage treatment system only adjusts the aeration volume according to the single parameter of DO when aerating the aerobic tank, ignoring the dynamic coupling relationship between COD load changes and ammonia nitrogen nitrification demand. Therefore, it is easy for the aeration volume per unit time to fail to reach the optimal parameter range, resulting in a decrease in ammonia nitrogen removal rate. Summary of the invention

[0004] In order to make the aeration volume per unit time within the optimal parameter range, the present application provides an intelligently controlled sewage treatment system.

[0005] In the first aspect, the present application provides an intelligently controlled sewage treatment system, which adopts the following technical solutions: An intelligently controlled sewage treatment system, characterized in that it includes a multi-parameter monitoring module, a dynamic decision-making module, and an aeration execution module; Multi-parameter monitoring module, used to collect actual aeration volume per unit time, COD concentration, ammonia nitrogen concentration, and DO parameters in real time; Dynamic decision-making module, used to analyze and issue control commands based on COD concentration, ammonia nitrogen concentration, and DO parameter information; The aeration execution module is used to receive control commands and adjust the aeration volume per unit time according to the control commands.

[0006] By adopting the above technical scheme, the actual aeration volume per unit time, COD concentration, ammonia nitrogen concentration, and DO parameters are monitored through a multi-parameter monitoring module, and the optimal aeration volume per unit time parameter is calculated according to the COD concentration, ammonia nitrogen concentration, and DO parameters. The parameter is compared with the actual aeration volume per unit time, and according to the comparison result, the power of the high-pressure blower is adjusted through the aeration execution module to adjust the actual aeration volume per unit time to be close to the optimal aeration volume per unit time.

[0007] Preferably, when the actual aeration volume per unit time is greater than 1.1 times the optimal aeration volume per unit time, the aeration execution module reduces the aeration volume per unit time, and when the actual aeration volume per unit time is less than 0.9 times the optimal aeration volume per unit time, the aeration execution module increases the aeration volume per unit time; the optimal aeration volume per unit time Q = the base aeration volume per unit time * COD correction parameter * ammonia nitrogen correction parameter * DO correction parameter, wherein the base aeration volume per unit time = aerobic pool sewage capacity * 24; when the COD concentration is less than 800 mg / L, the COD correction parameter = 1; when the COD concentration is greater than or equal to 800 mg / L, the COD correction parameter = 1 + 0.002 * (COD concentration - 800); when the ammonia nitrogen concentration is less than 30 mg / L, the ammonia nitrogen correction parameter = 1; when the ammonia nitrogen concentration is greater than or equal to 30 mg / L, the ammonia nitrogen correction parameter = 1 + 0.015 * (ammonia nitrogen concentration - 30); DO correction parameter = 1 + (3-DO value) / 1.5.

[0008] By adopting the above technical scheme, the theoretical optimal aeration volume per unit time is obtained by multiplying the benchmark aeration volume per unit time, the COD correction parameter, the ammonia nitrogen correction parameter, and the DO correction parameter, and by comparing the optimal aeration volume per unit time with the actual aeration volume per unit time, and adjusting the power of the high-pressure blower according to the comparison result, the actual aeration volume per unit time is within the optimal parameter range.

[0009] In a second aspect, the present application provides an aeration device for the above-mentioned sewage treatment system, which adopts the following technical solution: The utility model comprises an air inlet pipe, a rotating air outlet connector connected to the air inlet pipe, and an aeration pipe connected to the rotating air outlet connector.

[0010] By adopting the above technical solution, after controlling the aeration volume per unit time within the optimal parameter range, the problem of uniform aeration needs to be solved to avoid the situation where the aeration volume of each local area is within the non-optimal parameter range. The traditional solution of arranging a large number of aeration pipes side by side at the bottom of the aerobic pool side by side has many aeration pipe branches, and the air output of the branches arranged in front and behind the main pipeline is not uniform. It is easy for the branches close to the air inlet direction to have more aeration volume and the branches at the end to have less aeration volume. In addition, the amount of oxygen received by the areas between the aeration pipes will also vary greatly. Although the diffusion of water flow driven by aeration can solve some problems, there are still large dead corners. In the above solution, the aeration pipes rotate synchronously during the aeration process, so that the aeration volume at each position of the aerobic pool is more uniform.

[0011] Preferably, the rotating air outlet connecting member comprises a shell, a rotating member located in the shell, the interior of the shell is divided into an upper cavity and a lower cavity by a partition, the air inlet pipe is connected to the lower cavity, the rotating member is located in the lower cavity and the rotating member is a rotating body whose upper and lower end surfaces are in contact with the upper and lower side walls of the lower cavity, the rotating member is rotatably connected to the shell through a rotating shaft located in the center of the rotating member, at least three mounting grooves are formed on the side of the rotating member, each mounting groove is provided with a sealing sheet that moves along the mounting groove, the mounting groove is provided with a force element that applies a force to the sealing sheet to move out of the mounting groove, the upper and lower sides of the sealing sheet and the side facing away from the force element are in contact with the inner wall of the lower cavity, an air outlet hole connected to the upper cavity is provided on the partition at a position spaced apart from the air inlet pipe, an axial cavity is formed in the rotating shaft, an air inlet hole connected to the axial cavity is formed on the outer side wall of the rotating shaft located in the upper cavity, and the aeration pipe is connected to the axial cavity and rotates with the rotating shaft.

[0012] By adopting the above technical solution, after the strong wind airflow enters the lower cavity of the shell through the air inlet pipe, due to the enclosed space surrounded by the rotating part, the sealing sheet and the shell in the lower cavity, the pressure difference on the sealing sheets on both sides will drive the rotating part to rotate because the lengths of the sealing sheets on both sides of the enclosed space extending out of the mounting groove are not equal. The air in the enclosed space connected to the air outlet on the other side will enter the upper cavity through the air outlet, and enter the shaft cavity through the air inlet connected to the upper cavity, and then enter the aeration pipe through the disc cavity, and finally be discharged from the aeration hole on the aeration pipe. The aeration pipe will be driven to rotate during the rotation of the rotating part, so the aeration device will evenly supply air to various positions in the aerobic pool, and can drive the sewage in the aerobic pool to flow homogeneously, avoiding the situation where insufficient oxygen supply in some areas cannot fully degrade pollutants.

[0013] Preferably, a rotating disk fixedly connected to the rotating shaft is provided on the shell, a disk cavity communicating with the shaft cavity is formed at the center of the rotating disk, and a plurality of aeration pipes communicating with the disk cavity are fixed on the outer side of the rotating disk.

[0014] By adopting the above technical solution, the rotating shaft is connected to the multiple aeration pipes through the rotating disk, so that the multiple aeration pipes rotate together with the rotating shaft.

[0015] Preferably, the aeration pipe extends outward in a horizontal direction from the connection with the rotating disk, and each aeration pipe is formed with a plurality of aeration holes penetrating the side wall of the aeration pipe in a horizontal direction near the lower side surface, the height positions of all the aeration holes are lower than the height position of the inner cavity of the disk, and the direction of the airflow ejected from the aeration holes is opposite to the rotation direction of the aeration pipe.

[0016] By adopting the above technical solution, the aeration holes are arranged in a horizontal direction in which the direction of the ejected airflow is opposite to the direction of rotation of the aeration tube, so that the reaction force when the airflow is ejected from the aeration holes can also assist the rotating disk and the aeration tube to rotate. At the same time, the height of the aeration holes is lower than the height of the disk cavity, so that when there is no aeration, the sewage will not enter the disk cavity through the aeration holes, and when aeration is performed, the airflow will directly bring out the sewage in the aeration tube.

[0017] Preferably, the shell is cylindrical, the diameter of the rotating disk is larger than the diameter of the shell, the lower end surface of the rotating disk is fitted with the upper end surface of the shell, and the outer ring of the lower end surface of the rotating disk is formed with a circle of annular protrusions that fit with the outer side surface of the shell.

[0018] By adopting the above technical solution, the lower end surface of the rotating disk is fitted with the upper end surface of the shell, and the annular protrusion is fitted with the outer side surface of the shell, so that the rotating disk and the shell can only rotate relative to each other after being limited, and because there is a large fitting surface and an annular side fitting surface, the rotating disk can rotate smoothly without tilting.

[0019] Preferably, the force element comprises a first magnet fixed to the bottom of the mounting groove and a second magnet fixed to the side of the sealing sheet facing the bottom of the mounting groove, and the magnetic poles of the first magnet and the second magnet repel each other.

[0020] By adopting the above technical solution, the first magnet and the second magnet are provided to provide an outward force to the sealing sheet, so that the side surface of the sealing sheet can press against the side wall of the lower cavity to form a sealing surface.

[0021] Preferably, the lower cavity is a cylindrical cavity, the rotating member is cylindrical, and the upper and lower sides of the mounting groove both pass through the rotating member.

[0022] By adopting the above technical solution, the lower cavity and the rotating part are set to be cylindrical, so that the upper and lower end faces of the two only need to fit together to form a sealing surface. At the same time, the upper and lower sides of the installation groove pass through the rotating part, so that the sealing sheet can also abut the upper and lower sides of the lower cavity through the installation groove to form a sealing surface.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. The actual aeration volume per unit time, COD concentration, ammonia nitrogen concentration, and DO parameters are monitored through the multi-parameter monitoring module. The optimal aeration volume per unit time parameter is calculated based on the COD concentration, ammonia nitrogen concentration, and DO parameters, and the parameter is compared with the actual aeration volume per unit time. According to the comparison result, the power of the high-pressure blower is adjusted through the aeration execution module to adjust the actual aeration volume per unit time to be close to the optimal aeration volume per unit time.

[0024] 2. After the strong airflow enters the lower cavity of the shell through the air inlet pipe, the lower cavity is enclosed by the rotating part, the sealing sheet, and the shell. Since the lengths of the sealing sheets on both sides of the enclosed space extending out of the mounting slot are not equal, the pressure difference on the sealing sheets on both sides will drive the rotating part to rotate. The air in the enclosed space on the other side connected to the air outlet will enter the upper cavity through the air outlet, and enter the shaft cavity through the air inlet connected to the upper cavity, and then enter the aeration pipe through the disc cavity, and finally be discharged from the aeration hole on the aeration pipe. The aeration pipe will rotate as the rotating part rotates, so the aeration device will evenly supply air to various positions in the aerobic pool, and can drive the sewage in the aerobic pool to flow homogeneously, avoiding the situation where some areas are insufficiently supplied with oxygen and cannot fully degrade pollutants. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the sewage treatment system; Figure 2 It is a schematic diagram of the structure of the aeration device; Figure 3 is a schematic cross-sectional view of an aeration device; Figure 4 yes Figure 3 Schematic cross-sectional view at AA in the middle.

[0026] Explanation of the reference numerals: 1. aerobic tank; 2. air inlet pipe; 3. rotating air outlet connector; 4. aeration pipe; 5. shell; 6. partition; 7. upper cavity; 8. lower cavity; 9. rotating member; 10. rotating shaft; 11. mounting groove; 12. sealing sheet; 13. first magnet; 14. second magnet; 15. air outlet; 16. shaft cavity; 17. air inlet; 18. rotating disk; 19. disk cavity; 20. annular protrusion; 21. sealing ring; 22. aeration hole; 23. through hole. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] The embodiments of the present application disclose an intelligently controlled sewage treatment system. The “up”, “down”, “left” and “right” used in the embodiments are all schematic diagrams for describing the relative directions of positional relationships, and are not limitations of the positional relationships.

[0029] like Figure 1As shown, the sewage treatment system includes a regulating tank, a neutralization coagulation tank, a primary sedimentation tank, a sedimentation tank, an anaerobic tank, an aerobic tank 1 and an MBR tank. The regulating tank is used to regulate the homogeneity and quantity of sewage. The neutralization coagulation tank is used for adding drugs for neutralization, stirring, coagulation and flocculation. The primary sedimentation tank is used for solid-liquid separation and concentration and dehydration after intercepting suspended matter. The anaerobic tank is used for anaerobic decomposition to significantly degrade COD. The aerobic tank 1 is used for aeration so that microorganisms can further degrade pollutants such as COD and NH3-N in sewage under sufficient oxygen supply. The MBR tank is used to filter and intercept active sludge and macromolecular organic matter.

[0030] The sewage treatment system also includes a multi-parameter monitoring module, a dynamic decision module, and an aeration execution module. The multi-parameter monitoring module is used to collect the actual aeration volume per unit time, COD concentration, ammonia nitrogen concentration, and DO parameters in real time. The dynamic decision module is used to analyze and issue control commands based on the COD concentration, ammonia nitrogen concentration, and DO parameter information. The aeration execution module is used to receive control commands and adjust the aeration volume per unit time according to the control commands.

[0031] The multi-parameter monitoring module includes an air flow meter for monitoring air flow, a COD sensor, an ammonia nitrogen concentration sensor and a DO sensor. When the aeration volume per unit time measured by the air flow meter is greater than 1.1 times the optimal aeration volume per unit time, the power of the high-pressure blower is reduced; when the value measured by the air flow meter is less than 0.9 times the optimal aeration volume per unit time, the power of the high-pressure blower is increased.

[0032] Q (optimal aeration volume per unit time, unit: cubic meters / hour) = q (benchmark aeration volume per unit time) * K1 (COD correction parameter) * K2 (ammonia nitrogen correction parameter) * K3 (DO correction parameter) q=aerobic pool 1 sewage capacity*24, unit: cubic meter / hour.

[0033] When the COD concentration is less than 800 mg / L, K1=1; when the COD concentration is greater than or equal to 800 mg / L, K1=1+0.002*(COD concentration-800).

[0034] When the ammonia nitrogen concentration is less than 30 mg / L, K2=1; when the ammonia nitrogen concentration is greater than or equal to 30 mg / L, K2=1+0.015*(ammonia nitrogen concentration-30).

[0035] K3=1+(3-DO value) / 1.5.

[0036] like Figure 2 As shown, the aeration execution module includes a high-pressure blower and an aeration device, and the aeration device includes an air inlet pipe 2, a rotating air outlet connector 3 connected to the air inlet pipe 2, and an aeration pipe 4 connected to the rotating air outlet connector 3.

[0037] like Figure 3 and Figure 4 As shown, the rotary air outlet connector 3 includes a cylindrical shell 5, the axis of the shell 5 is in the vertical direction, and the shell 5 is divided into an upper cavity 7 and a lower cavity 8 by a partition 6, and the upper cavity 7 and the lower cavity 8 are both cylindrical cavities. A cylindrical rotating member 9 is installed in the lower cavity 8, and a rotating shaft 10 fixedly connected to the rotating member 9 extends vertically upward through the shell 5, so that the rotating member 9 is rotatably connected to the shell 5, and a bearing is provided at a position in the partition 6 that cooperates with the rotating shaft 10. The upper and lower end surfaces of the rotating member 9 are both sealed with the upper and lower side walls of the lower cavity 8, and the rotating shaft 10 is located at the center of the rotating member 9 and deviates from the center of the lower cavity 8, so that only one side of the rotating member 9 is in contact with the inner wall of the lower cavity 8. The side of the rotating member 9 is evenly formed with five mounting grooves 11 extending toward the center direction of the rotating member 9. The upper and lower sides of each mounting groove 11 penetrate the rotating member 9, and a sealing sheet 12 that can move along the length direction of the mounting groove 11 is arranged in the mounting groove 11. The upper and lower sides of the sealing sheet 12 are in abutment and sealed with the upper and lower side walls of the lower cavity 8. A first magnet 13 is fixed to the bottom of the mounting groove 11, and a second magnet 14 is installed on the side of the sealing sheet 12 in the corresponding mounting groove 11 facing the bottom surface of the mounting groove 11. The magnetic poles of the second magnet 14 and the first magnet 13 repel each other, so that the sealing sheet 12 is subjected to a force to move out of the mounting groove 11. In other embodiments, other elements such as springs can be used instead of the first magnet 13 and the second magnet 14 as force elements to apply force to the sealing sheet 12.

[0038] like Figure 3 and Figure 4 As shown, the air inlet pipe 2 is connected to the lower cavity 8 from the side of the housing 5, and the connecting position of the air inlet pipe 2 and the lower cavity 8 is close to the joint between the rotating member 9 and the inner wall of the lower cavity 8. An air outlet hole 15 is formed on the partition 6 near the joint between the rotating member 9 and the inner wall of the lower cavity 8, and the air outlet hole 15 is located on the other side of the air inlet pipe 2 relative to the joint between the rotating member 9 and the inner wall of the lower cavity 8. When air enters the lower cavity 8 through the air inlet pipe 2 and is discharged through the air outlet hole 15, the rotating member 9 is driven to rotate around the axis.

[0039] like Figure 3 and Figure 4As shown, a shaft cavity 16 is formed in the rotating shaft 10, and an air inlet 17 connected to the shaft cavity 16 is formed on the outer wall of the rotating shaft 10 located in the upper cavity 7. A rotating disk 18 is installed above the housing 5 and is fitted with the upper end surface of the housing 5. A disk cavity 19 connected to the shaft cavity 16 is formed in the center of the rotating disk 18. The rotating shaft 10 is welded to the rotating disk 18 in a state where the upper end surface of the rotating shaft 10 abuts against the upper side wall of the disk cavity 19, and a through hole 23 is opened at the side of the rotating shaft 10 near the upper end to connect the shaft cavity 16 and the disk cavity 19, and the height dimension of the through hole 23 is less than half of the height dimension of the disk cavity 19. The diameter of the rotating disk 18 is larger than the diameter of the shell 5, and the outer ring of the lower end surface of the rotating disk 18 is formed with a circle of annular protrusions 20 that fit with the outer side of the shell 5. The outer side of the shell 5 is embedded with a circle of sealing rings 21. The sealing rings 21 cooperate with the annular protrusions 20 to form a water-proof sealing surface so that the lubricating oil between the rotating disk 18 and the shell will not be impregnated by sewage. A plurality of aeration tubes 4 are fixed to the outer side of the rotating disk 18. The aeration tubes 4 extend outward in the horizontal direction from the connection with the rotating disk 18, and the lower side of the aeration tubes 4 is flush with the annular protrusions 20. Each aeration tube 4 is evenly distributed near the lower side with a plurality of aeration holes 22 extending in the horizontal direction through the side wall of the aeration tube 4. The height positions of all aeration holes 22 are lower than the height position of the disk inner cavity 19, and the direction of the airflow ejected from the aeration holes 22 is opposite to the rotation direction of the aeration tube 4.

[0040] The specific working process of the sewage treatment system: (1) The sewage is homogenized and equalized in the equalization tank, and then transported to the neutralization and coagulation tank through a sewage pump.

[0041] (2) After being neutralized, stirred, coagulated and flocculated by the dosing facilities, it enters the primary sedimentation tank.

[0042] (3) The primary sedimentation tank separates the solid and liquid, retains the suspended matter in the sedimentation tank hopper, and the supernatant enters the next process. The sludge at the bottom of the sedimentation tank is discharged into the sludge tank for concentration and dehydration.

[0043] (4) The supernatant that flows to the oxidation tank is discharged into the anaerobic tank after oxidation treatment. The COD is greatly degraded through anaerobic action, reducing the back-end treatment pressure.

[0044] (5) Composite fillers are suspended in the aerobic pool 1 and aerated by a high-pressure blower. With sufficient oxygen supply, microorganisms degrade pollutants in the sewage, including COD and NH3-N.

[0045] (6) After the reaction in aerobic tank 1, the mixed liquid overflows into the MBR tank, the clean water is discharged through the MBR water production pump, and the sludge mixed liquid flows back to the front anaerobic tank and aerobic tank 1. Excessive residual sludge can be discharged into the sludge tank for concentration and dehydration.

[0046] During the aeration process of aerobic pool 1, the dynamic decision module calculates the optimal aeration volume per unit time based on the COD concentration, ammonia nitrogen concentration, and DO parameter information, compares it with the actual aeration volume per unit time, and adjusts the power of the high-pressure blower based on the comparison result.

[0047] The strong airflow blown by the high-pressure blower enters the lower cavity 8 of the rotating air outlet connector 3 through the air inlet pipe 2. After the strong airflow enters the enclosed space surrounded by the rotating member 9, the sealing sheet 12, and the shell 5 in the lower cavity 8, the pressure difference on the sealing sheets 12 on both sides of the enclosed space will drive the rotating member 9 to rotate because the lengths of the sealing sheets 12 extending out of the mounting groove 11 on both sides are not equal. The air in the enclosed space connected to the air outlet 15 on the other side will enter the upper cavity 7 through the air outlet 15, and enter the shaft cavity 16 through the air inlet 17 connected to the upper cavity 7, and then enter the aeration pipe 4 through the disc cavity 19, and finally be discharged from the aeration hole 22 on the aeration pipe 4. The aeration pipe 4 will be driven to rotate during the rotation of the rotating member 9, so the aeration device will evenly supply air to various positions in the aerobic pool 1, and can drive the sewage in the aerobic pool 1 to flow homogeneously, avoiding the situation where insufficient oxygen supply in some areas cannot fully degrade pollutants.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An intelligently controlled sewage treatment system, characterized in that: Including multi-parameter monitoring module, dynamic decision module, aeration execution module; Multi-parameter monitoring module, used to collect actual aeration volume per unit time, COD concentration, ammonia nitrogen concentration, and DO parameters in real time; Dynamic decision-making module, used to analyze and issue control commands based on COD concentration, ammonia nitrogen concentration, and DO parameter information; The aeration execution module is used to receive control commands and adjust the aeration volume per unit time according to the control commands.

2. The sewage treatment system according to claim 1, characterized in that: When the actual aeration volume per unit time is greater than 1.1 times the optimal aeration volume per unit time, the aeration execution module reduces the aeration volume per unit time; when the actual aeration volume per unit time is less than 0.9 times the optimal aeration volume per unit time, the aeration execution module increases the aeration volume per unit time; The optimal aeration volume per unit time Q = the base aeration volume per unit time * COD correction parameter * ammonia nitrogen correction parameter * DO correction parameter, where the base aeration volume per unit time = aerobic tank (1) sewage capacity * 24; When the COD concentration is less than 800 mg / L, the COD correction parameter = 1; when the COD concentration is greater than or equal to 800 mg / L, the COD correction parameter = 1+0.002*(COD concentration-800); when the ammonia nitrogen concentration is less than 30 mg / L, the ammonia nitrogen correction parameter = 1; when the ammonia nitrogen concentration is greater than or equal to 30 mg / L, the ammonia nitrogen correction parameter = 1+0.015*(ammonia nitrogen concentration-30); DO correction parameter = 1+(3-DO value) / 1.

5.

3. An aeration device suitable for the sewage treatment system according to claim 1 or 2, characterized in that: It comprises an air inlet pipe (2), a rotating air outlet connector (3) connected to the air inlet pipe (2), and an aeration pipe (4) connected to the rotating air outlet connector (3).

4. The aeration device according to claim 3, characterized in that: The rotary air outlet connection member (3) comprises a shell (5) and a rotary member (9) located in the shell (5); the shell (5) is divided into an upper cavity (7) and a lower cavity (8) by a partition (6); the air inlet pipe (2) is connected to the lower cavity (8); the rotary member (9) is located in the lower cavity (8) and the rotary member (9) is a rotating body whose upper and lower end surfaces are in contact with the upper and lower side walls of the lower cavity (8); the rotary member (9) is rotatably connected to the shell (5) via a rotating shaft (10) located at the center of the rotary member (9); at least three mounting grooves (11) are formed on the side surface of the rotary member (9); each mounting groove (11) is provided with a sealing sheet ( 12), a force element for applying a force to the sealing sheet (12) to move out of the mounting groove (11) is provided in the mounting groove (11), the upper and lower sides of the sealing sheet (12) and the side facing away from the force element are both in close contact with the inner wall of the lower cavity (8) and sealed, an air outlet hole (15) connected to the upper cavity (7) is provided at a position on the partition (6) separated from the air inlet pipe (2), an axial cavity (16) is formed in the rotating shaft (10), an air inlet hole (17) connected to the axial cavity (16) is formed on the outer side wall of the rotating shaft (10) located in the upper cavity (7), and the aeration pipe (4) is connected to the axial cavity (16) and rotates with the rotating shaft (10).

5. The aeration device according to claim 4, characterized in that: The housing (5) is provided with a rotating disk (18) fixedly connected to the rotating shaft (10); a disk cavity (19) communicating with the shaft cavity (16) is formed at the center of the rotating disk (18); and a plurality of aeration pipes (4) communicating with the disk cavity (19) are fixed to the outer side surface of the rotating disk (18).

6. The aeration device according to claim 5, characterized in that: The aeration pipe (4) extends outward in a horizontal direction from the connection point with the rotating disk (18), and each aeration pipe (4) is formed with a plurality of aeration holes (22) near the lower side surface thereof, which penetrate the side wall of the aeration pipe (4) in a horizontal direction. The height positions of all the aeration holes (22) are lower than the height position of the disk inner cavity (19), and the direction of the airflow ejected from the aeration holes (22) is opposite to the rotation direction of the aeration pipe (4).

7. The aeration device according to claim 5, characterized in that: The shell (5) is cylindrical, the diameter of the rotating disk (18) is larger than the diameter of the shell (5), the lower end surface of the rotating disk (18) is in contact with the upper end surface of the shell (5), and the outer ring of the lower end surface of the rotating disk (18) is formed with a circle of annular protrusions (20) in contact with the outer side surface of the shell (5).

8. The aeration device according to claim 4, characterized in that: The force element comprises a first magnet (13) fixed to the bottom of the installation groove (11) and a second magnet (14) fixed to the side of the sealing sheet (12) facing the bottom of the installation groove (11), and the magnetic poles of the first magnet (13) and the second magnet (14) repel each other.

9. The aeration device according to claim 4, characterized in that: The lower cavity (8) is a cylindrical cavity, the rotating member (9) is cylindrical, and the upper and lower sides of the mounting groove (11) both penetrate the rotating member (9).

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