Aerator for environmental sewage treatment

Abstract

The invention discloses an aerator for environmental sewage treatment, and particularly relates to the technical field of sewage treatment. The invention adopts a method of sleeve-connecting a mesh cover and a lower mesh cover at a docking interface or a liquid inlet pipe to adapt to different working conditions of sewage treatment. The docking interface is in a sleeve-type manner. Due to the rotation of the shell, the aeration direction of the jet tube is changed. When bubbles in the aerated gas-liquid mixed flow vibrate or burst on the surfaces of the mesh cover and the lower mesh cover, local micro-pressure shocks are generated, which destroys the binding force between dirt and the mesh cover and the lower mesh cover. The mesh cover and the lower mesh cover adaptively rise and fall and slide in the vertical direction. The vibration wiping unit follows the floating adjustment component to clean different depth positions of the lower mesh cover. The sludge and other impurities attached to the lower mesh cover are removed through the set vibration frequency, and the friction wiping unit always contacts the surface of the mesh cover to achieve continuous and uniform cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an aerator for environmental sewage treatment. Background Art

[0002] Aerators are essential equipment for aerating and oxygenating water supply and drainage systems. They can be divided into surface aerators and underwater aerators based on their method of use. Underwater aerators primarily include microporous aerators and jet aerators. The basic principle of an aerator is to create intense contact between air and water, dissolving oxygen from the air into the water or expelling unwanted gases and volatile substances from the water into the air. Aerators are widely used in sewage treatment and water quality improvement, including industrial wastewater treatment and lake and river ecological restoration. By increasing the dissolved oxygen content in water, aerators promote the growth and activity of microorganisms and accelerate the decomposition and transformation of organic matter, thereby improving water quality.

[0003] After searching, the invention patent with publication number CN112479398A discloses an aerator for environmental sewage treatment. It uses a long strip support base and can be arranged in the sewage treatment pool in a similar manner to the arrangement of water pipes to achieve uniform ventilation in the entire treatment pool. In addition, by the mutual connection between the various aerators, the device layout density can be arbitrarily adjusted in a linear layout to achieve precise requirements for ventilation volume.

[0004] In the above scheme, a diaphragm aerator is used. In sewage treatment, a jet aerator is often used. Since multiple jet tubes are used, the aeration efficiency is increased. However, in order to prevent blockage, the existing aerator is equipped with a mesh cover to intercept. However, after interception, there is a situation where blockages are attached to the mesh cover, which reduces the water intake and affects the aeration efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an aerator for environmental sewage treatment to solve the problems mentioned in the above background technology.

[0006] The technical problems mainly solved by the present invention are:

[0007] In order to prevent clogging, existing aerators are equipped with mesh covers to intercept the water. However, after the blockage, there is a situation where the blockage adheres to the mesh cover, which reduces the water intake and affects the aeration efficiency.

[0008] The present invention can be achieved through the following technical solutions:

[0009] An aerator for environmental sewage treatment comprises an aeration main pipe fixedly arranged on a sewage tank, the lower end face of the aeration main pipe is rotatably connected to a multi-stage telescopic tube, the lower end face of the multi-stage telescopic tube is fixedly connected to a shell, the bottom face of the shell is provided with a liquid inlet pipe, the upper part of the liquid inlet pipe is rotatably sleeved with a mesh cover close to the bottom of the shell, and the lower end face of the liquid inlet pipe is fixed with a mounting cylinder, the bottom outer side of the mesh cover is slidably sleeved with a lower mesh cover, the lower end face of the lower mesh cover is connected to a mounting seat fixedly installed inside the sewage tank, the interior of the mounting seat is provided with a buoyancy adjustment component, the buoyancy adjustment component is rotatably connected to the mounting cylinder, the outside of the mounting cylinder is fixedly mounted with a connecting rod, the surface of the connecting rod is respectively provided with a friction wiping unit for cleaning the mesh cover and a vibration wiping unit for rotating, lifting and wiping the lower mesh cover.

[0010] A further technical improvement of the present invention is that the upper net cover includes two upper and lower ring rods, four reinforcement frames are arranged between the two ring rods, a filter is provided at the connection between the two adjacent reinforcement frames, an inner ring rail groove is provided on the inner side of the lower ring rod, and the vibrating wiping unit includes a connecting column sliding in the inner ring rail groove, a vibrating head driven by a vibration motor is provided on one side of the connecting column, and a connecting plate connected to the connecting rod is provided on the other side of the connecting column.

[0011] A further technical improvement of the present invention is that four limit blocks are fixed on the outer side of the ring rod at the lower position, and a fitting groove is provided in the middle part of the outer side of each limit block. A connecting column is slidingly provided inside the fitting groove, and a filter screen 2 is provided between two adjacent connecting columns, and the filter screen 2 is in contact with the vibration head.

[0012] A further technical improvement of the present invention is that the friction wiping unit includes a side plate provided on the upper end surface of the connecting rod, and the outer side surface of the side plate is provided with a plurality of protrusions, and the protrusions are in contact with the filter screen.

[0013] A further technical improvement of the present invention is that the buoyancy adjustment assembly includes a float arranged inside a mounting seat, an air bag is provided inside the float, a bottom surface of the air bag is provided with a two-way interface passing through the interior of the float, an extension block is provided at the bottom edge of the float, and a limit rod is fixed inside the mounting seat to be slidably arranged with the extension block;

[0014] A fixing plate is installed on the upper end surface of the buoy, and the fixing plate and the installation cylinder are rotatably arranged.

[0015] A further technical improvement of the present invention is that a ring block is fixedly sleeved on the outer side of the upper portion of the liquid inlet pipe, a collar is rotatably connected to the outer side of the collar block, and the collar is fixedly connected to the upper ring rod through a filter screen.

[0016] A further technical improvement of the present invention is that a docking port is fixed to the upper end surface of the shell, and jet tubes with different outlet directions are arranged at intervals on the outside of the shell, a nozzle is installed between the top of each jet tube and the top of the liquid inlet pipe, the water spray port of the nozzle is connected to the inner cavity of the jet tube, and the top of each jet tube is provided with an air inlet connected to the air inlet chamber in the shell.

[0017] A further technical improvement of the present invention is that the multi-stage telescopic tube includes a sleeve one, a limiting cavity is provided on the inner side of the lower end surface of the sleeve one, a piston is slidably connected to the inside of the limiting cavity, a sleeve two is fixed to the lower end surface of the piston, a sleeve three is slidably provided on the lower end surface of the sleeve two, and the lower end surface of the sleeve three is fixed to the docking port.

[0018] A further technical improvement of the present invention is that an aeration seat is provided on the lower end surface of the aeration main pipe, a sleeve 1 is rotatably provided in the stepped cavity inside the aeration seat, the sleeve 1 is communicated with the aeration seat, a driving gear is fixedly sleeved on the outer surface of the sleeve 1, and a driving gear driven by a servo motor is engaged on one side of the driving gear.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The net cover and the lower net cover are sleeved at the docking interface or the liquid inlet pipe to adapt to different sewage treatment working conditions. The docking interface is in a set-type manner. As the shell rotates, the aeration direction of the jet tube is changed. When the bubbles in the aerated gas-liquid mixed flow vibrate or burst on the surface of the net cover and the lower net cover, a local micro-pressure shock is generated, which destroys the binding force between the dirt and the net cover and the lower net cover. The net cover and the lower net cover are adaptively lifted and slid in the vertical direction. The rotation of the connecting rod is driven by the shell, which jointly drives the friction wiping unit and the vibration wiping unit to rotate together, and rub the net cover and vibrate and wipe the lower net cover respectively. The vibration wiping unit follows the floating adjustment component to clean different depths of the lower net cover. The set vibration frequency and amplitude can effectively remove impurities such as sludge attached to the lower net cover, while the friction wiping unit is always in contact with the surface of the net cover, so as to achieve continuous and uniform cleaning and avoid clogging of the net cover and the lower net cover.

[0021] 2. By setting up a buoyancy adjustment component and setting an air bag inside the float, the interference of the external environment is avoided. By changing the gas inside the air bag, the buoyancy of the float is adjusted to adapt to the water level change. At the same time, the floating change of the float always changes on the limit rod to ensure that the position does not change during floating;

[0022] 3. When floating, the water level of the buoy is controlled according to the different aeration positions. As the shell rises, the sleeve three in the multi-stage telescopic tube enters into the sleeve two, and then according to its aeration height, the sleeve two enters into the limit cavity in the sleeve one, realizing multi-stage telescopic expansion and contraction, ensuring the aeration use of the aerator at different depths for sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 Schematic diagram of the external structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the installation structure of the multi-stage telescopic pipe and the aeration main pipe of the present invention;

[0026] Figure 3 For the present invention Figure 1 A partial enlarged view of point A in the middle;

[0027] Figure 4 Schematic diagram of the installation structure of the buoy of the present invention;

[0028] Figure 5 For the present invention Figure 4 A partial enlarged view of point B in the middle;

[0029] Figure 6 It is a schematic diagram of the top view installation structure of the upper net cover and the lower net cover of the present invention;

[0030] Figure 7 This is a structural diagram of Example 2 of the present invention.

[0031] In the figure: 1. aeration main pipe; 2. multi-stage telescopic pipe; 3. docking port; 4. driving gear; 5. housing; 6. upper mesh cover; 7. lower mesh cover; 8. mounting seat; 9. liquid inlet pipe; 10. aeration seat; 11. casing 1; 12. casing 2; 13. casing 3; 14. limiting chamber; 15. piston; 16. jet tube; 17. collar; 18. ring rod; 19. filter screen 1; 20. mounting cylinder; 21. float; 22. air bag; 23. two-way interface; 24. limiting rod; 25. ring block; 26. connecting rod; 27. side plate; 28. protrusion; 30. inner ring rail groove; 31. limiting block; 32. vibrating head; 33. connecting column; 34. connecting plate; 35. fitting groove; 36. filter screen 2. DETAILED DESCRIPTION

[0032] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0033] Example 1

[0034] See also Figures 1-6 As shown, the present invention provides an aerator for environmental sewage treatment, comprising an aeration main pipe 1 fixedly arranged on a sewage tank, the lower end surface of the aeration main pipe 1 being rotatably connected to a multi-stage telescopic pipe 2, the lower end surface of the multi-stage telescopic pipe 2 being fixedly connected to a shell 5, the bottom surface of the shell 5 being provided with a liquid inlet pipe 9, the upper part of the liquid inlet pipe 9 being rotatably sleeved with a mesh cover 6 near the bottom of the shell 5, and the lower end surface of the liquid inlet pipe 9 being fixed with a mounting cylinder 20, the bottom outer side of the mesh cover 6 being slidably sleeved with a lower mesh cover 7, the lower end surface of the lower mesh cover 7 being connected to a fixedly mounted inside the sewage tank The mounting base 8 is provided with a buoyancy adjustment component inside the mounting base 8, which is rotatably connected to the mounting cylinder 20. The outer portion of the mounting cylinder 20 is fixedly mounted with a connecting rod 26. The surface of the connecting rod 26 is respectively mounted with a friction wiping unit for cleaning the net cover 6 and a vibration wiping unit for rotating and lifting the lower net cover 7. When in use, the housing 5 is suspended and mounted on the lower end of the aeration main pipe 1. The net cover 6 and the lower net cover 7 together constitute an interception of large particles of impurities in the sewage entering the liquid inlet pipe 9, and are fixedly connected to the mounting base 8. The net cover 6 The housing 5 and the lower net cover 7 are adaptively lifted and slid in the vertical direction and cannot rotate, that is, when the housing 5 is lifted by the buoyancy adjustment component, the net cover 6 rises and the height between it and the lower net cover 7 increases; when the housing 5 is lowered by the buoyancy adjustment component, the height between the net cover 6 and the lower net cover 7 decreases. When rising and lowering, the housing 5 drives the rotation of the connecting rod 26, which drives the friction wiping unit and the vibration wiping unit to rotate together, and respectively rubs the net cover 6 and vibrates and wipes the lower net cover 7. Since the net cover 6 and the lower net cover 7 intercept impurities in the sewage, At the same time, the water flow rate in sewage treatment is relatively small, which reduces the resistance of the friction wiping unit and the vibration wiping unit during rotation. The vibration wiping unit can follow the floating adjustment component to clean different depths of the lower mesh cover 7. Through the set vibration frequency and amplitude, the sludge and other impurities attached to the lower mesh cover 7 are effectively removed, and the friction wiping unit is always in contact with the surface of the mesh cover 6 to achieve continuous and uniform cleaning, avoiding blockage of the mesh cover 6 and the lower mesh cover 7, affecting water inlet, and the aerator may not be able to normally absorb enough water, resulting in a decrease in the working efficiency of the aeration system.

[0035] See Figure 3 and Figure 5As shown, the net cover 6 includes two upper and lower ring rods 18, four reinforcement frames are arranged between the two ring rods 18, and a filter 19 is provided at the connection between the two adjacent reinforcement frames. An inner ring rail groove 30 is provided on the inner side of the ring rod 18 at the lower position, and the vibration wiping unit includes a connecting column 33 that slides in the inner ring rail groove 30, and a vibration head 32 driven by a vibration motor is provided on one side of the connecting column 33, and a connecting plate 34 connected to the connecting rod 26 is provided on the other side of the connecting column 33. When the shell 5 rotates, the water inlet direction and the aeration direction are changed, and the connecting column 33 is driven to slide in the inner ring rail groove 30, providing a stable guide for the sliding of the connecting column 33. The vibration head 32 is driven by the connecting column 33 to rotate around the center of the lower net cover 7, and cooperates with the buoyancy adjustment component to raise the net cover 6, and vibrate and clean the lower net cover 7 at different positions.

[0036] See Figure 5 and Figure 6 As shown, four limit blocks 31 are fixed to the outer side of the lower position ring rod 18, and a fitting groove 35 is provided in the middle part of the outer side of each limit block 31. A connecting column 33 is slidingly provided inside the fitting groove 35, and a filter screen 2 36 is provided between two adjacent connecting columns 33. The filter screen 2 36 is in contact with the vibration head 32. When the upper mesh cover 6 and the lower mesh cover 7 slide, the connecting column 33 slides in the corresponding fitting groove 35, driving the position of the filter screen 2 36 and the filter screen 1 19 to change, thereby forming the lifting and lowering adjustment of the upper mesh cover 6 and the lower mesh cover 7.

[0037] See Figure 5 As shown, the friction wiping unit includes a side plate 27 provided on the upper end face of the connecting rod 26, and a plurality of protrusions 28 are provided on the outer side face of the side plate 27. The protrusions 28 are in contact with the filter screen 19, and the protrusions 28 peel off the stubborn dirt attached to the surface of the filter screen 19 through continuous friction.

[0038] See Figure 4 As shown, the buoyancy adjustment assembly includes a float 21 disposed inside the mounting seat 8, an air bag 22 is disposed inside the float 21, and a two-way interface 23 is provided on the bottom surface of the air bag 22 and passes through the interior of the float 21. An extension block is provided on the bottom edge of the float 21, and a limit rod 24 is fixed inside the mounting seat 8 to slide with the extension block.

[0039] A fixed plate is installed on the upper end surface of the float 21, and the fixed plate and the mounting tube 20 are rotatably arranged. The two-way interface 23 is equipped with a two-way solenoid valve. When inflating, the valve opens and the air pump inflates the airbag 22. The valve opens in the opposite direction and the gas in the airbag 22 is discharged. After inflation, the buoyancy in the float 21 increases, thereby causing the float 21 to rise. When rising, the float 21 is always raised and lowered along the setting direction of the limit rod 24 through the set extension block, thereby ensuring the stability of the float 21 when rising.

[0040] See Figure 4As shown, a ring block 25 is fixedly sleeved on the outer side of the upper portion of the liquid inlet pipe 9, and a collar 17 is rotatably connected to the outer side of the ring block 25. The collar 17 is fixedly connected to the upper ring rod 18 through a filter screen 19.

[0041] See Figure 1 As shown, a docking port 3 is fixed to the upper end surface of the shell 5, and jet tubes 16 with different outlet directions are provided at intervals on the outside of the shell 5. A nozzle is installed between the top of each jet tube 16 and the top of the liquid inlet pipe 9. The water spray port of the nozzle is connected to the inner cavity of the jet tube 16. The top of each jet tube 16 is provided with an air inlet connected to the air inlet chamber in the shell 5 to ensure the normal operation of the aerator.

[0042] See Figure 2 As shown, the multi-stage telescopic tube 2 includes a sleeve 11, a limiting cavity 14 is provided on the inner side of the lower end surface of the sleeve 11, a piston 15 is slidably connected to the inner side of the limiting cavity 14, a sleeve 2 12 is fixed to the lower end surface of the piston 15, a sleeve 3 13 is slidably provided on the lower end surface of the sleeve 2 12, and the lower end surface of the sleeve 3 13 is fixed to the docking port 3;

[0043] An aeration seat 10 is provided on the lower end face of the aeration main pipe 1. A sleeve 11 is rotatably provided in the stepped cavity inside the aeration seat 10. The sleeve 11 is communicated with the aeration seat 10. The outer surface of the sleeve 11 is fixedly sleeved with a driving gear 4. One side of the driving gear 4 is engaged with an active gear driven by a servo motor, so that the sleeve 11 is installed inside the aeration seat 10, and then the sleeve 3 13 is fixed to the docking port 3 to realize the connected installation of the aerator. When the shell 5 is raised by the buoyancy adjustment component, the sleeve 3 13 enters the sleeve 2 12, and the sleeve 2 12 enters the limiting cavity 14 in the sleeve 11, realizing multi-stage telescopic expansion and contraction, thereby ensuring the aeration use of the aerator for sewage treatment at different depths.

[0044] Example 2

[0045] See Figure 7 As shown, the difference from Example 1 is that the mesh cover 6 is installed on the outside of the docking port 3 and is rotatably connected to the docking port 3. The upper mesh cover 6 and the lower mesh cover 7 jointly protect the liquid inlet pipe 9 and the jet tube 16 to avoid a more complicated sewage treatment environment. In addition, the jet tube 16 rotates and adjusts to change the aeration direction. At the same time, the aerated gas-liquid mixed flow (bubbles and water) flushes the mesh cover 6 and the lower mesh cover 7, and peels off the sludge, particulate matter and impurities attached to the surface of the mesh cover 6 and the lower mesh cover 7. The turbulent effect of the water flow further enhances the cleaning effect. At the same time, when the bubbles vibrate or rupture on the surface of the mesh cover 6 and the lower mesh cover 7, a local micro-pressure shock is generated, which destroys the binding force between the dirt and the mesh cover 6 and the lower mesh cover 7.

[0046] When in use, the present invention adopts a method of sleeve-connecting the mesh cover 6 and the lower mesh cover 7 at the docking port 3 or the liquid inlet pipe 9 to adapt to different working conditions of sewage treatment. The docking port 3 is in a sleeved manner. As the shell 5 rotates, the aeration direction of the jet tube 16 is changed. When the bubbles in the aerated gas-liquid mixed flow vibrate or burst on the surface of the mesh cover 6 and the lower mesh cover 7, a local micro-pressure shock is generated, which destroys the binding force between the dirt and the mesh cover 6 and the lower mesh cover 7. The mesh cover 6 and the lower mesh cover 7 are adaptively lifted and slid in the vertical direction. The rotation of the connecting rod 26 is driven by the shell 5, which jointly drives the friction wiping unit and the vibration wiping unit to rotate together, and rub the mesh cover 6 and vibrate and wipe the lower mesh cover 7 respectively. The vibration wiping unit follows the floating adjustment component to clean different depths of the lower mesh cover 7. The set vibration frequency and amplitude effectively remove impurities such as sludge attached to the lower mesh cover 7, and the friction wiping unit always contacts the surface of the mesh cover 6 to achieve continuous and uniform cleaning, avoiding clogging of the mesh cover 6 and the lower mesh cover 7.

[0047] By setting up a buoyancy adjustment component and disposing an air bag 22 inside the float 21, interference from the external environment is avoided. By changing the gas inside the air bag 22, the buoyancy of the float 21 is adjusted to adapt to water level changes. At the same time, the floating position of the float 21 always changes on the limit rod 24, ensuring that the position does not change during floating;

[0048] When floating, the water level of the buoy 21 is controlled according to the different aeration positions. As the shell 5 rises, the sleeve three 13 in the multi-stage telescopic tube 2 enters the sleeve two 12. Then, according to its aeration height, the sleeve two 12 enters the limit cavity 14 in the sleeve one 11, realizing multi-stage telescopic expansion and contraction, ensuring the aeration use of the aerator at different depths for sewage treatment.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An aerator for environmental sewage treatment, comprising an aeration main pipe (1) fixedly arranged on a sewage tank, characterized in that: The lower end face of the aeration main pipe (1) is rotatably connected to a multi-stage telescopic pipe (2), the lower end face of the multi-stage telescopic pipe (2) is fixedly connected to a shell (5), the bottom face of the shell (5) is provided with a liquid inlet pipe (9), and the upper end face of the shell (5) is fixed with a docking port (3), the upper part of the liquid inlet pipe (9) or the upper part of the shell (5) is rotatably sleeved with a net cover (6), and the lower end face of the liquid inlet pipe (9) is fixed with a mounting cylinder (20), and the bottom outer side of the net cover (6) is slidably connected to the upper part of the liquid inlet pipe (9). The movable sleeve is connected to a lower mesh cover (7), the lower end surface of the lower mesh cover (7) is connected to a mounting seat (8) fixedly mounted inside the sewage pool, a buoyancy adjustment component is provided inside the mounting seat (8), the buoyancy adjustment component is rotatably connected to the mounting cylinder (20), a connecting rod (26) is fixedly mounted on the outside of the mounting cylinder (20), and a friction wiping unit for cleaning the mesh cover (6) and a vibration wiping unit for rotating and lifting the lower mesh cover (7) are respectively mounted on the surface of the connecting rod (26); The net cover (6) includes two upper and lower ring rods (18), four reinforcement frames are provided between the two ring rods (18), a filter screen (19) is provided at the connection between two adjacent reinforcement frames, an inner ring track groove (30) is provided on the inner side of the lower ring rod (18), and the vibration wiping unit includes a connecting column (33) sliding in the inner ring track groove (30), a vibration head (32) driven by a vibration motor is provided on one side of the connecting column (33), and a connecting plate (34) connected to the connecting rod (26) is provided on the other side of the connecting column (33); Four limit blocks (31) are fixed on the outer side of the lower ring rod (18), and a fitting groove (35) is provided in the middle of the outer side of each limit block (31). A connecting column (33) is slidably provided inside the fitting groove (35), and a second filter (36) is provided between two adjacent connecting columns (33), and the second filter (36) is in contact with the vibration head (32); Jet tubes (16) with different outlet directions are provided at intervals on the outer side of the shell (5), a nozzle is installed between the top of each jet tube (16) and the top of the liquid inlet pipe (9), the water spray port of the nozzle is connected to the inner cavity of the jet tube (16), and the top of each jet tube (16) is provided with an air inlet connected to the air inlet chamber in the shell (5).

2. The aerator for environmental sewage treatment according to claim 1, characterized in that: The friction wiping unit comprises a side plate (27) provided on the upper end surface of the connecting rod (26), and a plurality of protrusions (28) are provided on the outer side surface of the side plate (27), and the protrusions (28) are in contact with the filter screen (19).

3. The aerator for environmental sewage treatment according to claim 1, characterized in that: The buoyancy adjustment assembly includes a float (21) provided inside the mounting seat (8), an air bag (22) provided inside the float (21), a bottom surface of the air bag (22) provided with a two-way interface (23) passing through the inside of the float (21), an extension block provided at the bottom edge of the float (21), and a limiting rod (24) fixed inside the mounting seat (8) and slidably arranged with the extension block; A fixing disk is installed on the upper end surface of the buoy (21), and the fixing disk and the mounting cylinder (20) are rotatably arranged.

4. The aerator for environmental sewage treatment according to claim 1, characterized in that: A ring block (25) is fixedly sleeved on the outer side of the upper portion of the liquid inlet pipe (9) or the outer side of the docking port (3), and a collar (17) is rotatably connected to the outer side of the ring block (25). The collar (17) is fixedly connected to the upper ring rod (18) via a filter screen (19).

5. The aerator for environmental sewage treatment according to claim 1, characterized in that: The multi-stage telescopic tube (2) comprises a sleeve 1 (11), a limiting cavity (14) is provided on the inner side of the lower end surface of the sleeve 1 (11), a piston (15) is slidably connected to the interior of the limiting cavity (14), a sleeve 2 (12) is fixed to the lower end surface of the piston (15), a sleeve 3 (13) is slidably provided on the lower end surface of the sleeve 2 (12), and the lower end surface of the sleeve 3 (13) is fixed to the docking port (3).

6. The aerator for environmental sewage treatment according to claim 5, characterized in that: An aeration seat (10) is provided on the lower end surface of the aeration main pipe (1), and a sleeve (11) is rotatably provided in a stepped cavity inside the aeration seat (10). The sleeve (11) is communicated with the aeration seat (10), and a driving gear (4) is fixedly sleeved on the outer surface of the sleeve (11). One side of the driving gear (4) is engaged with a driving gear driven by a servo motor.

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