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 aerator adapts to different sewage treatment working conditions by adopting the mode that an upper net cover and a lower net cover are connected to a butt joint opening or a liquid inlet pipeline in a sleeving mode, the butt joint opening is in the sleeving mode, and due to the fact that a shell rotates, the upper net cover and the lower net cover are arranged in a sleeving mode; the aeration direction of the jet pipe is changed, when bubbles in an aerated gas-liquid mixed flow vibrate or crack on the surfaces of the upper net cover and the lower net cover, local tiny pressure impact can be generated, the binding force between dirt and the upper net cover and the binding force between dirt and the lower net cover are damaged, and the upper net cover and the lower net cover slide in a self-adaptive lifting mode in the vertical direction; the vibration wiping unit cleans different depth positions of the lower net cover along with the floating adjusting assembly, impurities such as sludge attached to the lower net cover are removed through the set vibration frequency, the friction wiping unit makes contact with the surface of the upper net cover all the time, and continuous and uniform cleaning is achieved.

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 aeration and oxygenation of water supply and drainage. According to the method of use, they can be divided into surface aerators and underwater aerators. Underwater aerators mainly include microporous aerators and jet aerators. The basic principle of aerators is to make air and water contact strongly, dissolve oxygen in the air into water, or expel unnecessary gases and volatile substances in water into the air. They are widely used in sewage treatment and water quality improvement, including industrial wastewater treatment, lake and river ecological restoration, etc. By increasing the dissolved oxygen content in the water body, promoting the growth and activity of microorganisms, and accelerating the decomposition and transformation of organic matter, the water quality environment is improved.

[0003] After searching, the invention patent with publication number CN112479398A discloses an aerator for environmental sewage treatment. By using a long strip support base, it 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 clamping between the aerators, the arrangement density of the device can be adjusted at will in a linear layout to achieve precise requirements for the 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 for interception. However, after interception, there is a situation where the blockage is attached to the mesh cover, which reduces the water intake and affects the aeration efficiency. Summary of the invention

[0005] The object 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 blockage, existing aerators are equipped with mesh covers for interception. However, after interception, there is a situation where blockages are attached to the mesh covers, 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, comprising an aeration main pipe fixedly arranged on a sewage pool, the lower end face of the aeration main pipe is rotatably connected to a multi-stage telescopic pipe, the lower end face of the multi-stage telescopic pipe 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 and close to the lower part of the shell is rotatably sleeved with a mesh cover, and the lower end face of the liquid inlet pipe is fixed with a mounting tube, 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 pool, the interior of the mounting seat is provided with a buoyancy adjustment component, the buoyancy adjustment component is rotatably connected to the mounting tube, the outside of the mounting tube is fixedly installed with a connecting rod, and 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 screen is provided at the connection between two adjacent reinforcement frames, an inner ring rail groove is provided on the inner side of the lower ring rod, the vibration wiping unit includes a connecting column sliding in the inner ring rail groove, a vibration 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, 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, 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 comprises a side plate arranged 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 the mounting seat, an air bag is arranged inside the float, a two-way interface penetrating through the inside of the float is arranged on the bottom surface of the air bag, an extension block is arranged on the bottom edge of the float, and a limit rod slidably arranged with the extension block is fixed inside the mounting seat;

[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 sleeve is rotatably connected to the outer side of the ring block, and the sleeve 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 on the upper end surface of the shell, and jet tubes with different outlet directions are arranged at intervals on the outer side 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 limit cavity is provided on the inner side of the lower end surface of the sleeve one, a piston is slidably connected inside the limit cavity, a sleeve two is fixed on 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 face of the aeration main pipe, a sleeve one is rotatably provided in the stepped cavity inside the aeration seat, the sleeve one is communicated with the aeration seat, a driving gear is fixedly sleeved on the outer surface of the sleeve one, and a driving gear driven by a servo motor is meshed on one side of the driving gear.

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

[0020] 1. The method of sleeve-connecting the upper net cover and the lower net cover at the docking interface or the liquid inlet pipe is adopted to adapt to different working conditions of sewage treatment. The docking interface is in a sleeved 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 rupture on the surface of the upper net cover and the lower net cover, a local micro-pressure shock is generated, which destroys the binding force between the dirt and the upper net cover and the lower net cover. The upper 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 drives the friction wiping unit and the vibration wiping unit to rotate together, and the upper net cover is rubbed and the lower net cover is vibrated and wiped respectively. The vibration wiping unit follows the floating adjustment component to clean different depths of the lower net cover. The sludge and other impurities attached to the lower net cover are effectively removed by the set vibration frequency and amplitude, and the friction wiping unit is always in contact with the surface of the upper net cover to achieve continuous and uniform cleaning, avoiding blockage of the upper net cover and the lower net cover;

[0021] 2. By setting up a buoyancy adjustment component and setting up 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 change of water level. 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 the 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 for sewage treatment at different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order 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 It is a schematic diagram of the external structure of the present invention;

[0025] Figure 2 It 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 the middle A;

[0027] Figure 4 It is a 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 schematic diagram of the structure 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 net cover; 7. lower net cover; 8. mounting seat; 9. liquid inlet pipe; 10. aeration seat; 11. casing one; 12. casing two; 13. casing three; 14. limiting cavity; 15. piston; 16. jet tube; 17. collar; 18. ring rod; 19. filter screen one; 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. convex head; 30. inner ring track groove; 31. limiting block; 32. vibrating head; 33. connecting column; 34. connecting plate; 35. fitting groove; 36. filter screen two. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, 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 Figure 1-Figure 6 As shown, the present invention provides an aerator for environmental sewage treatment, comprising an aeration main pipe 1 fixedly arranged on a sewage pool, the lower end surface of the aeration main pipe 1 is rotatably connected to a multi-stage telescopic pipe 2, the lower end surface of the multi-stage telescopic pipe 2 is fixedly connected to a shell 5, the bottom surface of the shell 5 is provided with a liquid inlet pipe 9, the upper part of the liquid inlet pipe 9 and close to the lower part of the shell 5 is rotatably sleeved with a net cover 6, and the lower end surface of the liquid inlet pipe 9 is fixed with a mounting tube 20, the bottom outer side of the net cover 6 is slidably sleeved with a lower net cover 7, and the lower end surface of the lower net cover 7 is connected to a fixed installation inside the sewage pool. The mounting seat 8 is provided with a buoyancy adjustment component inside, which is rotatably connected to the mounting cylinder 20. A connecting rod 26 is fixedly installed on the outside of the mounting cylinder 20. The surface of the connecting rod 26 is respectively installed 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 shell 5 is suspended and installed on the lower end of the aeration main pipe 1, and 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 seat 8, wherein the net cover 6 The housing 5 and the lower net cover 7 can be adaptively lifted and slid in the vertical direction and cannot be rotated, 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 rubs the net cover 6 and vibrates and wipes the lower net cover 7 respectively. 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 the different depths of the lower mesh cover 7. The sludge and other impurities attached to the lower mesh cover 7 can be effectively removed by setting the vibration frequency and amplitude, while 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 the 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 also Figure 3 and Figure 5As shown, the upper net cover 6 includes two upper and lower ring rods 18, four reinforcement frames are arranged between the two ring rods 18, a filter screen 19 is arranged at the connection between two adjacent reinforcement frames, an inner ring track groove 30 is arranged on the inner side of the ring rod 18 at the lower position, 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 arranged on one side of the connecting column 33, and a connecting plate 34 connected to the connecting rod 26 is arranged 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 track groove 30, providing a stable guide for the sliding of the connecting column 33, and 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 make the net cover 6 rise, and vibrate and clean the lower net cover 7 at different positions.

[0036] See also 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 slidably 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 net cover 6 and the lower net 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 net cover 6 and the lower net cover 7.

[0037] See also Figure 5 As shown, the friction wiping unit includes a side plate 27 arranged on the upper end surface of the connecting rod 26, and a plurality of protrusions 28 are arranged on the outer side surface 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 also 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, a two-way interface 23 penetrating through the inside of the float 21 is disposed on the bottom surface of the air bag 22, an extension block is disposed at the bottom edge of the float 21, and a limit rod 24 slidably disposed with the extension block is fixed inside the mounting seat 8;

[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 also 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 also 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 arranged 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 with the inner cavity of the jet tube 16. The top of each jet tube 16 is provided with an air inlet connected with the air inlet chamber in the shell 5 to ensure the normal operation of the aerator.

[0042] See also Figure 2 As shown, the multi-stage telescopic tube 2 includes a sleeve 11, a limiting cavity 14 is provided inside the lower end surface of the sleeve 11, a piston 15 is slidably connected inside 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, and a sleeve 11 is rotatably provided in a stepped cavity inside the aeration seat 10, and the sleeve 11 is communicated with the aeration seat 10. A driving gear 4 is fixedly sleeved on the outer surface of the sleeve 11, and an active gear driven by a servo motor is engaged on one side of the driving gear 4, so that the sleeve 11 is installed inside the aeration seat 10, and then the sleeve three 13 is fixed to the docking port 3 to achieve the connected installation of the aerator. When the shell 5 is raised by the buoyancy adjustment component, the sleeve three 13 enters into the sleeve two 12, and the sleeve two 12 enters into the limiting cavity 14 in the sleeve one 11, so as to realize multi-stage telescopic extension and retraction, thereby ensuring the aeration use of the aerator for sewage treatment at different depths.

[0044] Example 2

[0045] See also Figure 7 As shown, different from Example 1, the net cover 6 is installed on the outside of the docking port 3 and is rotatably connected to the docking port 3. The upper net cover 6 and the lower net 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 is rotated and adjusted to change the aeration direction. At the same time, the aerated gas-liquid mixed flow (bubbles and water) flushes the net cover 6 and the lower net cover 7, and the sludge, particulate matter and impurities attached to the surface of the net cover 6 and the lower net cover 7 are peeled off. The turbulent effect of the water flow further enhances the cleaning effect. At the same time, when the bubbles vibrate or break on the surface of the net cover 6 and the lower net cover 7, a local micro-pressure shock will be generated to destroy the binding force between the dirt and the net cover 6 and the lower net cover 7.

[0046] When the present invention is in use, the net cover 6 and the lower net cover 7 are sleeved 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 rupture on the surface of the net cover 6 and the lower net cover 7, a local micro-pressure shock is generated, which destroys the binding force between the dirt and the net cover 6 and the lower net cover 7. The net cover 6 and the lower net 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 rubs the net cover 6 and vibrates and wipes the lower net cover 7 respectively. The vibration wiping unit follows the floating adjustment component to clean different depths of the lower net cover 7. The sludge and other impurities attached to the lower net cover 7 are effectively removed by the set vibration frequency and amplitude, and the friction wiping unit always contacts the surface of the net cover 6 to achieve continuous and uniform cleaning, avoiding the blockage of the net cover 6 and the lower net cover 7.

[0047] By setting a buoyancy adjustment component and setting an air bag 22 in 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 the change of water level. At the same time, the floating position of the float 21 always changes on the limit rod 24 to ensure 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 into the sleeve two 12, and then according to its aeration height, the sleeve two 12 enters into the limiting cavity 14 in the sleeve one 11, realizing multi-stage telescopic expansion and contraction, ensuring the aeration use of the aerator for sewage treatment at different depths.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall 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 surface of the aeration main pipe (1) is rotatably connected to a multi-stage telescopic pipe (2), the lower end surface of the multi-stage telescopic pipe (2) is fixedly connected to a shell (5), the bottom surface of the shell (5) is provided with a liquid inlet pipe (9), and the upper end surface 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 surface 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 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 arranged inside the mounting seat (8), the buoyancy adjustment component is rotatably connected to the mounting cylinder (20), a connecting rod (26) is fixedly mounted outside the mounting cylinder (20), and a friction wiping unit for cleaning the upper mesh cover (6) and a vibration wiping unit for rotating and lifting and wiping the lower mesh cover (7) are respectively mounted on the surface of the connecting rod (26).

2. The aerator for environmental sewage treatment according to claim 1, characterized in that: The upper net cover (6) comprises two upper and lower ring rods (18), four reinforcement frames are arranged between the two ring rods (18), a filter screen (19) is arranged at the connection between two adjacent reinforcement frames, an inner ring track groove (30) is arranged on the inner side of the lower ring rod (18), and the vibration wiping unit comprises a connecting column (33) sliding in the inner ring track groove (30), a vibration head (32) driven by a vibration motor is arranged on one side of the connecting column (33), and a connecting plate (34) connected to the connecting rod (26) is arranged on the other side of the connecting column (33).

3. The aerator for environmental sewage treatment according to claim 2, characterized in that: 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 screen (36) is provided between two adjacent connecting columns (33), and the second filter screen (36) is in contact with the vibration head (32).

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

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

6. The aerator for environmental sewage treatment according to claim 2, characterized in that: A ring block (25) is fixedly sleeved on the outer side of the upper part of the liquid inlet pipe (9) or the outer side of the docking port (3), and a sleeve ring (17) is rotatably connected to the outer side of the ring block (25). The sleeve ring (17) is fixedly connected to the upper ring rod (18) through a filter screen (19).

7. The aerator for environmental sewage treatment according to claim 1, characterized in that: The outer side of the shell (5) is provided with jet tubes (16) with different outlet directions at intervals, a nozzle is installed between the top of each jet tube (16) and the top of the liquid inlet pipe (9), the water spraying 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).

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

9. The aerator for environmental sewage treatment according to claim 8, characterized in that: An aeration seat (10) is provided at the lower end surface of the aeration main pipe (1), 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), a driving gear (4) is fixedly sleeved on the outer surface of the sleeve (11), and a driving gear driven by a servo motor is meshed on one side of the driving gear (4).

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