A sewage tank aeration device

Abstract

The invention discloses an aeration device for a sewage pool, belonging to the technical field of sewage treatment, comprising a pool body, wherein a vertical pole is connected inside the pool body, a disc seat is rotatably connected to the upper end of the vertical pole, a U-shaped bracket is connected below the disc seat, a middle part of the bracket is rotatably connected to the side wall of the vertical pole, two aeration pipes are arranged on the cross bar of the bracket, a plurality of air outlets are evenly opened on the two aeration pipes, and a stirring plate is connected to the aeration pipe. The invention rotates through the disc seat, and at this time, the stirring plate will guide the sewage in the oncoming direction to the water trough during the rotation process, and the sewage will form an upward vortex after passing through the water trough, and when the sewage passes through the water trough, the air in the aeration pipe is discharged from the air outlet to the water trough, and then the air will be drawn into the formed vortex by the sewage, and the air and water are fully stirred in the vortex to achieve full and uniform contact between the air and the sewage, thereby improving the efficiency of sewage treatment.

Description

Technical Field

[0001] The invention relates to a sewage pool aeration device, belonging to the technical field of sewage treatment. Background Art

[0002] The purpose of the aeration tank is to dissolve oxygen from the air into the water, providing oxygen for the bacterial flocs or biofilms to remove pollutants;

[0003] At present, when sewage is treated, an aeration pipe is generally fixed at the bottom of an aeration tank, and the sewage in the aeration tank is aerated through the aeration pipe. After the air enters the sewage, it will float directly upward until it floats to the surface. At present, in order to increase the full and uniform contact between air and sewage, a stirring paddle is added inside the existing aeration tank to stir the sewage. However, the disadvantages of the existing aeration pipe and stirring paddle are that due to the fast upward floating speed of air, it is difficult for air and sewage to fully and evenly contact, and it is difficult to achieve a reasonable coordination between the air output of the aeration pipe and the speed of the stirring paddle, resulting in low aeration efficiency. Therefore, an aeration device for a sewage tank is proposed. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a sewage pool aeration device, which can form a vortex after sewage and air flow through the water flow channel when the stirring plate is stirred. The air and water are fully stirred in the vortex to achieve sufficient and uniform contact between air and sewage, thereby improving the efficiency of sewage treatment.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an aeration device for a sewage pool, comprising a pool body, a vertical pole fixedly connected to the center position of the inner part of the pool body, the inner part of the pole is hollow, the lower end of the pole passes through the pool body and extends to the outside of the pool body, the lower end of the pole passing through the pool body is bent to a horizontal state, the upper and lower ends of the pole are open, the upper end of the pole is rotatably connected to a disc seat, a U-shaped bracket is connected below the disc seat, the upper end of the bracket is fixedly connected to the side wall of the chassis, the middle part of the bracket is rotatably connected to the side wall of the pole, two aeration pipes are symmetrically arranged on the cross bar of the bracket with the center of the pole, the aeration pipe is connected to the air pump through the gas pipeline, and a plurality of air outlet holes are evenly opened on the two aeration pipes along the axial direction of the aeration pipe;

[0006] A stirring plate is fixedly connected to the side wall of the aeration pipe, the stirring plate is bent and tilted toward the air outlet, and a water trough for sewage to flow is provided on one side of the stirring plate close to the aeration pipe.

[0007] Preferably, a crossbeam is fixedly installed above the pool body, a motor is fixedly installed on the crossbeam, and a drive disk is connected to the center position of the upper side of the disk seat through a connecting rod. The drive disk and the disk seat are coaxially arranged, and the output shaft of the motor is gear-driven with the drive disk.

[0008] Preferably, the air pump is fixedly installed on the cross beam, the air delivery pipeline is fixed on the vertical rod of the bracket, the upper end of the air delivery pipeline extends upward and is fixed on the driving disc, and the upper end of the air delivery pipeline penetrates through the side wall of the driving disc and is connected to the air delivery end of the air pump.

[0009] Preferably, the aeration pipe is rotatably connected to the bracket, a baffle for covering the air outlet hole is connected to one side of the bracket close to the air outlet hole, a pressing plate is fixedly connected below the aeration pipe, and a spring is arranged between the pressing plate and the bracket. When the bracket rotates, the stirring plate is driven by the resistance of water to rotate the aeration pipe, and the air outlet hole deflects and opens. The faster the rotation speed of the stirring plate, the greater the resistance of the stirring plate to water, and thus the greater the rotation amplitude of the aeration pipe. At this time, the air outlet hole opens wider, and more air is discharged into the sewage. At this time, it is suitable for the aeration volume when a large amount of sewage enters the pool. On the contrary, when the rotation speed of the stirring plate is slower, the air outlet hole opens smaller, which is suitable for the aeration volume when a small amount of sewage enters the pool. At this time, the pressing plate compresses the spring to move. When the bracket stops rotating, the spring resets and presses the pressing plate to reset the aeration pipe and the stirring plate. At this time, the air outlet hole is covered by the baffle. After the baffle covers the air outlet hole, it can separate the aeration pipe from the pool to prevent sewage from flowing back into the aeration pipe. After a long time, impurities in the sewage will adhere to the inside of the aeration pipe, affecting the flow of air.

[0010] Preferably, reinforcing ribs for increasing the strength of the stirring plate are arranged at the bending part of the stirring plate, and the reinforcing ribs further play a role in protecting the stirring plate.

[0011] Preferably, a first water hole is opened at the upper end of the vertical rod. The water level height of the sewage in the pool is maintained in a state higher than the bottom of the first water hole and lower than the top of the first water hole. And a hollow plug rod is slidably connected to the upper end of the vertical rod along the axial direction of the vertical rod. The lower end of the plug rod is successively provided with a blocking position and a second water hole from bottom to top. When the vertical rod is slid to make the blocking position coincide with the first water hole, the blocking position blocks the first water hole. When the second water hole coincides with the first water hole, the sewage inside the pool flows into the vertical rod from the second water hole and the first water hole.

[0012] Preferably, a spiral guide plate for guiding the floating scum on the water surface to the central position of the sewage water surface is fixedly connected to the lower side surface of the disc base.

[0013] Compared with the prior art:

[0014] 1. When the motor starts and drives the disk base to rotate in the present invention, the bracket, the aeration pipe, and the stirring plate will also rotate in the same direction as the disk base. At this time, during the rotation of the stirring plate, the stirring plate will divert the sewage in the oncoming direction downward to the overflow trough, and after the sewage passes through the overflow trough, it will roll up upward to form a vortex. When the sewage passes through the overflow trough, the air in the aeration pipe is discharged from the inside of the air outlet holes to the outside, and the discharged air floats upward to the overflow trough, and then the air will be involved in the vortex formed by the sewage. In the vortex, the air and water are fully stirred to achieve full and uniform contact between the air and the sewage, thereby improving the efficiency of sewage treatment.

[0015] 2. The faster the rotation speed of the stirring plate in the present invention, the greater the resistance of the stirring plate to water, so the rotation amplitude of the aeration pipe will be greater. At this time, the air outlet holes open wider, and more air is discharged into the sewage. At this time, it is suitable for the aeration volume when a large amount of sewage enters the pool. On the contrary, when the rotation speed of the stirring plate is slower, the air outlet holes open smaller, and it is suitable for the aeration volume when a small amount of sewage enters the pool, so as to reasonably utilize the aeration gas.

[0016] 3. In the present invention, the spring resets and presses the pressure plate to reset the aeration pipe and the stirring plate. At this time, the air outlet holes are covered by the shielding plate, and the shielding plate can separate the aeration pipe from the pool to prevent sewage from flowing back into the aeration pipe. After a long time, impurities in the sewage will adhere to the inside of the aeration pipe, affecting the flow of air. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a cross-sectional view of the overall structure of the present invention.

[0019] Figure 3 It is a cross-sectional view of the pool body, the vertical rod and the spiral guide plate of the present invention.

[0020] Figure 4 It is a cross-sectional view of the disk base, the bracket, the spiral guide plate and the stirring plate of the present invention.

[0021] Figure 5 It is a cross-sectional view of the aeration pipe and the stirring plate of the present invention.

[0022] Figure 6 It is a schematic diagram of the flow of sewage and air at the stirring plate of the present invention.

[0023] Figure 7 It is an exploded view of the aeration pipe and the air delivery pipe of the present invention.

[0024] Figure 8 It is an exploded view of the bracket, the aeration pipe and the air delivery pipe of the present invention.

[0025] Figure 9 Schematic diagram of the closed structure of water hole 1 of the present invention.

[0026] Figure 10 Schematic diagram of the open structure of water hole 1 of the present invention.

[0027] Figure 11 Exploded sectional view of the vertical rod, plug rod and swivel of the present invention.

[0028] Figure 12 Schematic diagram of the structure at the gas transmission pipeline and the driving disc of the present invention.

[0029] In the figure: 1. Pool body, 101. Cross beam, 2. Vertical rod, 201. Water hole 1, 3. Disc seat, 4. Bracket, 5. Aeration pipe, 501. Air outlet hole, 6. Gas transmission pipeline, 7. Air pump, 8. Motor, 9. Connecting rod, 10. Driving disc, 11. Stirring plate, 1101. Reinforcing rib, 12. Water overflow tank, 13. Baffle plate, 14. Pressing plate, 15. Spring, 16. Plug rod, 1601. Blocking position, 1602. Water hole 2, 1603. Annular groove, 17. Spiral guide plate, 18. Electric push rod, 19. Fork, 20. Swivel, 21. Water inlet, 22. Water outlet, 23. Sewage outlet. Detailed implementation manners

[0030] The following uses specific embodiments to illustrate the present invention, but it is not a limitation to the invention.

[0031] As Figures 1-12 shown, in the present application, a sewage pool aeration device is provided, including a pool body 1. A vertical rod 2 is fixedly connected to the central position inside the pool body 1. The inside of the vertical rod 2 is hollow. The lower end of the vertical rod 2 penetrates through the pool body 1 and extends to the outside of the pool body 1. The part of the lower end of the vertical rod 2 penetrating through the pool body 1 is bent to a horizontal state. The upper and lower ends of the vertical rod 2 are open. After the sewage in the pool body 1 is introduced through the upper end of the vertical rod 2, the floating scum mixed in the sewage can flow along the vertical rod 2 and finally be discharged from the lower end of the vertical rod 2. A disc seat 3 is rotatably connected to the upper end of the vertical rod 2. A U-shaped bracket 4 is connected below the disc seat 3. The upper end of the bracket 4 is fixedly connected to the side wall of the disc seat 3. The middle part of the bracket 4 is rotatably connected to the side wall of the vertical rod 2. Two aeration pipes 5 are symmetrically arranged on the cross bar of the bracket 4 with the center of the vertical rod 2 as the symmetry axis. The aeration pipes 5 are communicated with an air pump 7 through a gas transmission pipeline 6. A plurality of air outlet holes 501 are evenly opened on the two aeration pipes 5 along the axis direction of the aeration pipes 5;

[0032] As Figures 4-8As shown, in order to enable the sewage to come into full and uniform contact with air, a stirring plate 11 is fixedly connected to the side wall of the aeration pipe 5. The stirring plate 11 is bent and inclined towards the side of the air outlet 501. A water passing groove 12 for the sewage to flow through is formed on the side of the stirring plate 11 close to the aeration pipe 5. When the motor 8 and the air pump 7 are started, the motor 8 starts and drives the disk seat 3 to rotate in the direction of the arrow shown in Figure 4 When the disk seat 3 rotates in the direction of the arrow shown, the bracket 4, the aeration pipe 5 and the stirring plate 11 will also rotate in the same direction as the disk seat 3. At this time, during the rotation of the stirring plate 11, the stirring plate 11 will guide the sewage in the oncoming direction downward to the water passing groove 12. After the sewage passes through the water passing groove 12, it will roll up upward to form a vortex (the sewage flow direction is as shown by the solid arrow in Figure 6 ), and when the sewage passes through the water passing groove 12, the air in the aeration pipe 5 is discharged outward from the inside of the air outlet 501. The discharged air floats upward to the water passing groove 12, and then the air will be involved in the vortex formed by the sewage (as shown by the hollow circles in Figure 6 represent air bubbles, and the air flow direction is as shown by the hollow arrow in Figure 6 ). During this process, when the air flows with the sewage, it has a downward flow trend, increasing the time of the air in the sewage and improving the contact efficiency between the air and the sewage). In the vortex, the air and water are fully stirred to achieve full and uniform contact between the air and the sewage, thereby improving the sewage treatment efficiency.

[0033] As Figure 4 shown, in order to be able to drive the disk seat 3 to rotate so that the two aeration pipes 5 rotate around the vertical rod 2 and uniformly inject air into the sewage in the pool body 1, a cross beam 101 is fixedly installed above the pool body 1. A motor 8 is fixedly installed on the cross beam 101, and the center position of the upper side of the disk seat 3 is connected to a driving disk 10 through a connecting rod 9. The driving disk 10 and the disk seat 3 are coaxially arranged, and the output shaft of the motor 8 is in gear transmission with the driving disk 10.

[0034] As Figure 4 shown, in order to be able to inject gas into the aeration pipe 5, the air pump 7 is fixedly installed on the cross beam 101. The gas transmission pipeline 6 is fixed on the vertical rod of the bracket 4. The upper end of the gas transmission pipeline 6 extends upward and is fixed on the driving disk 10, and the upper end of the gas transmission pipeline 6 penetrates the side wall of the driving disk 10 and is connected to the gas transmission end of the air pump 7;

[0035] After the motor 8 starts, the output shaft of the motor 8 drives the drive disk 10 to rotate through a gear. Then, the drive disk 10 will drive the disk seat 3 to rotate through the connecting rod 9. Subsequently, the bracket 4 will rotate along with the disk seat 3. During the rotation of the bracket 4, the two aeration pipes 5 can rotate along with the bracket 4. The two aeration pipes 5 rotate around the vertical rod 2. In this way, after the air pump 7 inputs air into the aeration pipes 5 through the air delivery pipeline 6, the air discharged from the air outlet holes 501 will be evenly distributed in the sewage in the pool body 1, causing the air and the sewage to fully and evenly contact, thereby improving the efficiency of sewage treatment;

[0036] In addition, as Figure 12 shown, in order to better fix the air delivery pipeline 6 on the drive disk 10, the drive disk 10 includes an upper disk and a lower disk. The upper disk and the lower disk are fixed by bolts. A groove for clamping the air delivery pipeline 6 is formed between the upper disk and the lower disk. Moreover, a through hole for the upper end of the air delivery pipeline 6 to extend out is provided at the center position of the upper disk. After the upper end of the air delivery pipeline 6 passes through the through hole, it is connected to the air delivery end of the air pump 7 through a rotary joint. After adding the rotary joint, when the air pump 7 supplies air to the inside of the air delivery pipeline 6, it will not interfere with the rotation of the air delivery pipeline 6 along with the disk seat 3 and the bracket 4.

[0037] As Figures 5-8 shown, in order to be able to adaptively control the aeration volume during aeration according to the size of the sewage flow rate entering the pool body 1 and avoid energy waste caused by a small sewage volume, the aeration pipe 5 is rotatably connected to the bracket 4. As Figure 4As shown, a plurality of hoop rings are provided on the side wall of the support 4. The aeration pipe 5 and the gas transmission pipeline 6 are clamped on the support 4 by the hoop rings. The aeration pipe 5 and the gas transmission pipeline 6 can adopt rigid pipes (such as steel pipes). Since the aeration pipe 5 is rotatably connected to the support 4, a rotary joint can be used to connect the aeration pipe 5 and the gas transmission pipeline 6 (since the rotation amplitude of the gas transmission pipeline 6 is small, a flexible connection can also be used to connect the aeration pipe 5 and the gas transmission pipeline 6) to ensure the connection stability between the aeration pipe 5 and the gas transmission pipeline 6. A baffle 13 for covering the air outlet 501 is connected to one side of the support 4 close to the air outlet 501. A pressing plate 14 is fixedly connected below the aeration pipe 5. A spring 15 is provided between the pressing plate 14 and the support 4. When the support 4 rotates, the stirring plate 11 is driven by the resistance of water to rotate the aeration pipe 5, and the air outlet 501 deflects and opens. The faster the rotation speed of the stirring plate 11, the greater the resistance of the stirring plate 11 to water, so that the rotation amplitude of the aeration pipe 5 will be greater. At this time, the air outlet 501 opens wider, and more air is discharged into the sewage. At this time, it is suitable for the aeration volume when a large amount of sewage enters the pool body 1. On the contrary, when the rotation speed of the stirring plate 11 is slower, the air outlet 501 opens smaller, which is suitable for the aeration volume when a small amount of sewage enters the pool body 1. At this time, the pressing plate 14 compresses the spring 15 to move. When the support 4 stops rotating, the spring 15 resets and presses the pressing plate 14 to reset the aeration pipe 5 and the stirring plate 11. At this time, the air outlet 501 is covered by the baffle 13. After the baffle 13 covers the air outlet 501, the aeration pipe 5 can be separated from the pool body 1 to prevent sewage from flowing back into the aeration pipe 5, and to prevent impurities in the sewage from adhering to the inside of the aeration pipe 5 after a long time, affecting the air flow.

[0038] As Figure 7 shown, in order to enhance the water resistance strength of the stirring plate 11, a reinforcing rib 1101 for increasing the strength of the stirring plate 11 is provided at the bent portion of the stirring plate 11. The front direction of the reinforcing rib 1101 is in a tip shape. When the stirring plate 11 rotates, while the reinforcing rib 1101 increases the strength of the stirring plate 11, the reinforcing rib 1101 can guide the sewage in the front direction to both sides, avoiding the impact of the sewage on the bent portion of the stirring plate 11, and further playing a role in protecting the stirring plate 11.

[0039] As Figures 9-11As shown, in order to regularly remove the scum floating on the water surface, a water hole 201 is opened at the upper end of the vertical rod 2. The height of the sewage water level in the pool body 1 is maintained at a state higher than the bottom of the water hole 201 and lower than the top of the water hole 201. And a hollow plug rod 16 is slidably connected to the upper end of the vertical rod 2 along the axis direction of the vertical rod 2. A blocking position 1601 and a water hole 202 are successively arranged at the lower end of the plug rod 16 from bottom to top. When the vertical rod 2 is slid so that the blocking position 1601 coincides with the water hole 201, the blocking position 1601 blocks the water hole 201. When the water hole 202 coincides with the water hole 201, the sewage inside the pool body 1 flows into the vertical rod 2 from the water hole 202 and the water hole 201.

[0040] A spiral guide plate 17 for guiding the scum floating on the water surface to the central position of the sewage water surface is fixedly connected to the lower side of the disc base 3. As Figure 2 shown, the lower side of the spiral guide plate 17 is below the water level of the sewage (the sewage water level is at the dotted line position as Figure 2 shown). During the rotation of the spiral guide plate 17, the scum will float along the spiral groove of the spiral guide plate 17 to the central position of the sewage water surface. And the spiral guide plate 17 is made of a mesh plate. When the spiral guide plate 17 guides the scum to the central position of the sewage water surface, the sewage flows out from the mesh holes of the spiral guide plate 17, avoiding the agitation of the sewage water surface when the spiral guide plate 17 rotates and affecting the aggregation of the scum.

[0041] As Figures 1-3 shown, an inlet 21, an outlet 22 and a sewage outlet 23 are provided on the pool body 1. The heights of the inlet 21 and the outlet 22 are at the dotted line positions as Figure 2 shown. The sewage outlet 23 is at the bottom position of the pool body 1. And valves are provided on the sewage outlet 23. When aeration is carried out, the valve on the sewage outlet 23 is closed. The inlet 21 introduces sewage and the outlet 22 discharges the treated sewage. The valve on the sewage outlet 23 is opened, thus facilitating the regular cleaning of the pool body 1.

[0042] During the process of the scum gathering towards the center of the sewage water surface, the blocking position 1601 blocks the water hole 201. After a certain gathering time, the plug rod 16 is driven downward to make the water hole 202 slide down to coincide with the water hole 201. In this way, the sewage will flow into the inner cavity of the vertical rod 2 from the water hole 202 and the water hole 201. At this time, the scum will flow into the vertical rod 2 along with the sewage, thereby removing the scum. After a certain period of cleaning, the plug rod 16 is driven upward to make the blocking position 1601 slide upward to block the water hole 201, and the gathering of the scum is carried out again.

[0043] In order to be able to drive the plug rod 16 to slide up or down at the upper end of the vertical rod 2, at least one electric push rod 18 is provided on the cross beam 101. The lower end of the output shaft of the electric push rod 18 is provided with a U-shaped fork 19. A rotating ring 20 is slidably connected to the side wall of the connecting rod 9 along the vertical direction of the connecting rod 9. An annular groove 1603 is formed at the upper end of the plug rod 16. The center position of the rotating ring 20 is rotatably connected to the annular groove 1603, and the outer side of the rotating ring 20 is located inside the fork 19;

[0044] When the motor 8 is started and the disk seat 3, the driving disk 10, and the connecting rod 9 are driven to rotate, since the rotating ring 20 is fixed to the connecting rod 9, the rotating ring 20 will rotate along with the connecting rod 9. During the rotation of the rotating ring 20, the outer side of the rotating ring 20 is always located inside the fork 19, and the center position of the rotating ring 20 is always located inside the annular groove 1603. When the electric push rod 18 is started, the fork 19 can drive the rotating ring 20 to move up or down on the connecting rod 9. In this way, the rotating ring 20 can drive the plug rod 16 to move up or down, so as to realize the operation of controlling the intermittent discharge of sewage scum, and the rotation of the disk seat 3, the driving disk 10, and the connecting rod 9 is not affected during this process.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. A sewage pool aeration device, comprising a pool body (1), wherein a vertical pole (2) is fixedly connected to the center of the pool body (1), the interior of the pole (2) is hollow, and the lower end of the pole (2) passes through the pool body (1) and extends to the outside of the pool body (1), characterized in that: The upper end of the vertical rod (2) is rotatably connected to a disc base (3). A U-shaped bracket (4) is connected below the disc base (3). The middle of the bracket (4) is rotatably connected to the side wall of the vertical rod (2). Two aeration pipes (5) are symmetrically arranged on the cross bar of the bracket (4) with the center of the vertical rod (2) as the symmetry center. The aeration pipes (5) are communicated with an air pump (7) through an air delivery pipe (6). A plurality of air outlet holes (501) are evenly formed in the two aeration pipes (5) along the axial direction of the aeration pipes (5). A stirring plate (11) is fixedly connected to the side wall of the aeration pipe (5). The stirring plate (11) is bent and inclined towards the side of the air outlet hole (501). A water passing groove (12) for sewage to flow through is formed on the side of the stirring plate (11) close to the aeration pipe (5). A cross beam (101) is fixedly installed above the pool body (1). A motor (8) is fixedly installed on the cross beam (101). And a driving disc (10) is connected to the center position of the upper side surface of the disc base (3) through a connecting rod (9). The output shaft of the motor (8) is in gear transmission with the driving disc (10). The air pump (7) is fixedly installed on the cross beam (101). The air delivery pipe (6) is fixed on the vertical rod of the bracket (4). The upper end of the air delivery pipe (6) extends upward and is fixed on the driving disc (10). And the upper end of the air delivery pipe (6) penetrates through the side wall of the driving disc (10) and is connected to the air delivery end of the air pump (7). The aeration pipe (5) is rotatably connected to the bracket (4). A shielding plate (13) for covering the air outlet hole (501) is connected to the side of the bracket (4) close to the air outlet hole (501). A pressing plate (14) is fixedly connected below the aeration pipe (5). A spring (15) is arranged between the pressing plate (14) and the bracket (4). When the bracket (4) rotates, the stirring plate (11) is driven by the resistance of water to drive the aeration pipe (5) to rotate, and the air outlet hole (501) deflects and opens. At this time, the pressing plate (14) compresses the spring (15) to move. When the bracket (4) stops rotating, the spring (15) resets and presses the pressing plate (14) to reset the aeration pipe (5) and the stirring plate (11). At this time, the air outlet hole (501) is covered by the shielding plate (13).

2. The sewage tank aeration device according to claim 1, characterized in that, Reinforcing ribs (1101) for increasing the strength of the stirring plate (11) are arranged at the bent part of the stirring plate (11).

3. The sewage tank aeration device according to claim 1, characterized in that, A water hole one (201) is formed at the upper end of the vertical rod (2). And a hollow plug rod (16) is slidably connected to the upper end of the vertical rod (2) along the axial direction of the vertical rod (2). A blocking position (1601) and a water hole two (1602) are arranged at the lower end of the plug rod (16) from bottom to top. When the vertical rod (2) is slid so that the blocking position (1601) coincides with the water hole one (201), the blocking position (1601) blocks the water hole one (201). When the water hole two (1602) coincides with the water hole one (201), the sewage inside the pool body (1) flows into the vertical rod (2) from the water hole two (1602) and the water hole one (201).

4. The sewage tank aeration device according to claim 3, characterized in that, A spiral guide plate (17) is fixedly connected to the lower side surface of the disc base (3).

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