Energy-saving aeration equipment for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to energy-saving aeration equipment for sewage treatment, which comprises an air supply mechanism arranged on the outer side of a sewage pool and a first aeration pipe arranged in the sewage pool, and the first aeration pipe is connected and communicated with the air supply mechanism. A plurality of first aeration holes and a plurality of second aeration holes are formed in the first aeration pipe; the second aeration pipe is rotationally arranged on the sewage tank and sleeves the first aeration pipe, a plurality of third aeration holes corresponding to the first aeration holes or the second aeration holes are formed in the second aeration pipe, and the third aeration holes are communicated with the first aeration holes or the second aeration holes along with rotation of the second aeration pipe; and the rotating mechanism is arranged on the sewage pool, is connected with the second aeration pipe and is used for driving the second aeration pipe to rotate. The sewage treatment device has the effect of improving the sewage treatment efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, and in particular to an energy-saving aeration equipment for sewage treatment. BACKGROUND

[0002] At present, sewage treatment is an important link of environmental protection and water resource recycling. In the process of sewage treatment, the aeration equipment plays a crucial role, which can effectively promote the microbial activity in the sewage, accelerate the decomposition of organic matter, and improve the efficiency and quality of sewage treatment.

[0003] In the prior art, a sewage treatment aeration mechanism is disclosed in Chinese Patent No. CN108640305A, which comprises an aeration pipe group and a blast air supply mechanism. The blast air supply mechanism is arranged outside the reaction tank and connected with the aeration pipe group through an air inlet pipe. The aeration pipe group comprises an aeration pipe one and an aeration pipe two. The aeration pipe one is installed at a deep water position below the liquid surface, and the aeration pipe two is arranged floating on the liquid surface. The aeration pipe one and the aeration pipe two are connected with each other through an extensible pipe mechanism. The aeration pipe two can float along the liquid surface under the action of the extensible pipe mechanism. When sewage treatment is carried out, the blast air supply mechanism sends gas into the aeration pipe one and the aeration pipe two through the air inlet pipe to perform deep water aeration and surface aeration on the sewage.

[0004] However, when the aeration pipe one and the aeration pipe two perform aeration on water with a fixed depth, the disturbance area of the sewage is fixed and limited, the oxygen coverage is uneven, and the microbial activity is limited, which makes the decomposition of organic matter uneven and leads to low efficiency of sewage treatment. CONTENT OF THE UTILITY MODEL

[0005] In order to improve the efficiency of sewage treatment, the present application provides an energy-saving aeration equipment for sewage treatment.

[0006] The energy-saving aeration equipment for sewage treatment provided by the present application adopts the following technical scheme:

[0007] An energy-saving aeration equipment for sewage treatment comprises a blast air supply mechanism arranged outside a sewage tank and a first aeration pipe arranged in the sewage tank. The first aeration pipe is connected and communicated with the blast air supply mechanism, and a plurality of first aeration holes and a plurality of second aeration holes are arranged on the first aeration pipe.

[0008] A second aeration pipe is rotatably arranged on the sewage tank and sleeved on the first aeration pipe. A plurality of third aeration holes corresponding to the first aeration holes or the second aeration holes are arranged on the second aeration pipe. The third aeration holes are communicated with the first aeration holes or the second aeration holes by rotation.

[0009] A rotating mechanism is arranged on the sewage tank and connected with the second aeration pipe and used to drive the second aeration pipe to rotate.

[0010] By adopting the above technical scheme, the air supply mechanism is started, and oxygen or other gas enters the sewage tank through the first aeration pipe; at the same time, the rotating mechanism is started to drive the second aeration pipe to start rotating; with the rotation of the second aeration pipe, the third aeration hole starts to gradually align and communicate with the first aeration hole or the second aeration hole; when the third aeration hole communicates with the first aeration hole or the second aeration hole, gas enters the sewage through the two communicating holes to achieve the aeration effect, and the contact between the gas and the water is more uniform and comprehensive, which is beneficial to the activity of microorganisms and the decomposition of organic matter, improves the sewage treatment efficiency, and further reduces the sewage treatment time and saves energy; since the second aeration pipe is continuously rotating, the third aeration hole will continuously communicate with different first aeration holes or second aeration holes, thereby realizing the aeration of different areas in the sewage tank; the air supply mechanism and the rotating mechanism continuously operate to maintain the aeration effect in the sewage tank; by adjusting the air supply amount of the air supply mechanism or the rotating speed of the rotating mechanism, the strength and range of aeration can be adjusted.

[0011] Through the cooperation of the rotating second aeration pipe and the fixed first aeration pipe, the dynamic communication of the aeration holes is realized, and the utilization rate of the gas is improved; compared with the traditional fixed aeration mode, the device can more effectively disperse the gas into the sewage tank, reducing the waste of gas; due to the rotation of the second aeration pipe, the third aeration hole can continuously communicate with different first aeration holes or second aeration holes, thereby realizing the uniform aeration of different areas in the sewage tank; this helps to improve the distribution of dissolved oxygen in the sewage and improve the sewage treatment effect.

[0012] Optionally, the rotating mechanism comprises:

[0013] A driving motor is arranged on the sewage tank;

[0014] A first gear is key-connected to the output shaft of the driving motor and rotationally connected with the sewage tank;

[0015] A second gear is coaxially connected with the second aeration pipe and engaged with the first gear.

[0016] By adopting the above technical scheme, when aeration needs to be started, the driving motor is started, the output shaft of the driving motor starts to rotate, and the first gear is driven to rotate through the key connection; due to the meshing relationship between the first gear and the second gear, the rotation of the first gear will drive the second gear to rotate synchronously; the rotation of the second gear further drives the second aeration pipe coaxially connected therewith to start to rotate; under the continuous driving of the driving motor, the first gear and the second gear maintain stable meshing transmission; the second aeration pipe continuously rotates with the rotation of the second gear, and the third aeration hole thereon continuously aligns and communicates with the first aeration hole or the second aeration hole on the first aeration pipe; gas enters the sewage through the communicated aeration holes to realize the aeration effect; the rotation speed of the second aeration pipe can be controlled by adjusting the rotation speed of the driving motor, so as to adjust and control the strength and range of aeration; when aeration needs to be stopped, the driving motor is turned off, the first gear and the second gear stop rotating, and the second aeration pipe also stops rotating; the gear transmission mode is adopted to ensure the stable and efficient rotation of the second aeration pipe; the gear transmission has the advantages of large torque transmission, stable transmission and high efficiency, and is suitable for occasions requiring stable rotation; the components such as the driving motor, the first gear and the second gear are compactly installed on the sewage tank, without occupying too much space; such compact structure design helps to reduce the overall height and floor area of the equipment, improve the space utilization rate; the gear transmission components are relatively simple and easy to maintain and overhaul; when the components need to be maintained or replaced, the related components can be conveniently disassembled and installed; by adjusting the rotation speed of the driving motor, the rotation speed of the second aeration pipe can be flexibly adjusted to meet the sewage treatment requirements of different scales.

[0017] Optionally, the rotating mechanism further comprises:

[0018] a third gear coaxially connected with the first gear;

[0019] a fourth gear rotationally arranged on the sewage tank and meshing with the third gear and capable of meshing with the second gear;

[0020] a slip ring sliding on the second aeration pipe, and the second gear is arranged on the slip ring.

[0021] By adopting the above technical scheme, when the driving motor is started, the first gear rotates, and since the third gear is coaxially connected with the first gear, the third gear also rotates synchronously; in the initial state, the fourth gear meshes with the third gear, but since the positions of the slip ring and the second gear can be adjusted, the second gear does not contact the fourth gear at this time; by manually adjusting the position of the slip ring, the rotation direction can be switched, thereby increasing the applicability of the equipment.

[0022] Optionally, the rotating mechanism further comprises:

[0023] An adjusting assembly is arranged on the sewage tank and connected with the sliding ring, and is used for adjusting the position of the sliding ring.

[0024] By adjusting the position of the sliding ring through the adjusting assembly, the second gear is gradually meshed with the fourth gear or is kept separated from the fourth gear as needed; when the second gear is completely meshed with the fourth gear, the rotation of the third gear drives the fourth gear and the second gear to rotate synchronously, thereby driving the second aeration pipe to rotate reversely; the switching of the rotation direction is completed through the participation of the adjusting assembly, which facilitates the increase of the aeration of the sewage, thereby reducing the sewage treatment time and saving energy.

[0025] Optionally, a first spiral groove and a second spiral groove are arranged on the outer wall of the sliding ring, the first spiral groove and the second spiral groove are opposite in rotation direction, and the first spiral groove and the second spiral groove are connected smoothly at the head and tail and correspond one by one, and the adjusting assembly comprises:

[0026] A fixed ring is arranged on the sewage tank and is in sliding connection with the sliding ring;

[0027] A driving block is arranged on the fixed ring and is in sliding connection with the first spiral groove and can slide into the second spiral groove.

[0028] By adopting the above technical scheme, as the sliding ring rotates, the driving block slides along the spiral path in the first spiral groove, and due to the inclined design of the first spiral groove and the second spiral groove, the sliding of the driving block is converted into the up-and-down movement of the sliding ring in the fixed ring.

[0029] When the driving block slides to the end of the first spiral groove, due to the smooth transition connection of the first spiral groove and the second spiral groove at the head and tail, the driving block naturally transitions into the second spiral groove and continues to slide along the second spiral groove.

[0030] By controlling the rotation direction and angle of the sliding ring, the position of the driving block in the first spiral groove and the second spiral groove can be accurately adjusted, thereby realizing the accurate control of the up-and-down position of the sliding ring.

[0031] The change of the position of the sliding ring drives the second gear to move, thereby changing the meshing relationship between the second gear and the fourth gear and realizing the adjustment of the rotation speed and direction of the second aeration pipe, and the adjustment process can be realized only by rotating the sliding ring without the need for complex mechanical structures or external power sources, which makes the operation more convenient and efficient and saves energy.

[0032] Optionally, a transition groove is arranged on the side wall of the fourth gear and the first gear close to each other, and is used for switching the meshing state of the second gear.

[0033] By adopting the technical scheme, when it is necessary to switch the meshing state of the first gear and the second gear, first, the position of the sliding ring is adjusted by the adjusting assembly, so that the second gear gradually approaches or moves away from the fourth gear; in the process that the second gear approaches the fourth gear, the transition groove plays a key role. Due to the existence of the transition groove, when the teeth of the second gear and the teeth of the fourth gear are about to contact or separate, they can be smoothly transitioned without causing sudden impact or jamming; when the second gear and the fourth gear are completely meshed, power can be transmitted to the second gear through the third gear and the fourth gear, thereby driving the second aeration pipe to rotate; if it is necessary to release the meshing state, the sliding ring is only moved back to the original position by the adjusting assembly, so that the teeth of the second gear and the fourth gear are gradually separated, and are smoothly transitioned through the transition groove.

[0034] Optionally, the floating aeration mechanism further comprises:

[0035] The stand is arranged in the sewage pool.

[0036] The floating plate is arranged on the stand and floats in the sewage pool.

[0037] The third aeration pipe is arranged on the floating plate and connected with the air supply mechanism, and a plurality of fourth aeration holes are formed in the third aeration pipe.

[0038] By adopting the technical scheme, when the air supply mechanism is started, air is transported into the third aeration pipe through the pipeline; with the inflow of air, the fourth aeration holes begin to release tiny air bubbles, which rise and diffuse in the sewage, increasing the oxygen content and stirring effect in the sewage; the floating plate floats according to the water level change in the sewage pool, ensuring that the third aeration pipe always remains at an appropriate water depth position to achieve the best aeration effect; if it is necessary to adjust the aeration intensity or change the aeration position, the output power of the air supply mechanism or the position of the floating plate on the stand can be adjusted to achieve the purpose; the distribution of oxygen is more uniform, facilitating the decomposition activity of microorganisms, improving the treatment efficiency of sewage, reducing the sewage treatment time, and saving energy.

[0039] Optionally, the floating aeration mechanism further comprises:

[0040] The traction rope is arranged on the second aeration pipe and connected with the third aeration pipe, and is wound with the rotation of the second aeration pipe.

[0041] By adopting the above technical scheme, when the second aeration pipe starts to rotate, the traction rope will be wound on the second aeration pipe due to the connection of the traction rope and the second aeration pipe; with the continuous rotation of the second aeration pipe, the traction rope is gradually wound tightly, while pulling the third aeration pipe (or the floating plate) to move or swing in the sewage tank; such movement or swing helps to change the aeration position and angle of the third aeration pipe, so as to more evenly distribute the aeration bubbles and improve the aeration efficiency; at the same time, due to the existence of the floating plate, the third aeration pipe can be kept at a certain depth in the water, ensuring that the aeration bubbles can fully contact and mix with the sewage, and can not be limited to surface aeration, realizing deep water, upper water and surface aeration.

[0042] The movement range and swing amplitude of the third aeration pipe can be adjusted by adjusting the rotation speed and direction of the second aeration pipe and the length and connection mode of the traction rope; such adjustment mode makes the floating aeration mechanism better adapt to the environmental conditions and sewage treatment requirements of different sewage tanks.

[0043] Optionally, the second aeration pipe is provided with a disturbance leaf.

[0044] By adopting the above technical scheme, the design of the disturbance leaf enables it to produce rotation or swing in the water flow, thereby effectively enhancing the disturbance effect of the water flow. Such disturbance helps to break the static balance of the water body and promote the exchange and mixing of substances in the water body; the enhanced water flow disturbance and efficient aeration effect jointly promote the oxidation and decomposition process of pollutants in the water body. By accelerating the biodegradation and chemical conversion of pollutants, organic matter, nitrogen and phosphorus and other pollutants in the water body can be more effectively removed.

[0045] In summary, the present application includes at least one of the following beneficial technical effects:

[0046] 1. By the cooperation of the rotating second aeration pipe and the fixed first aeration pipe, dynamic communication of the aeration holes is realized, and the utilization rate of gas is improved; compared with the traditional fixed aeration mode, the device can more effectively disperse gas into the sewage tank, reducing the waste of gas; due to the rotation of the second aeration pipe, the third aeration hole can be continuously communicated with different first aeration holes or second aeration holes, thereby realizing uniform aeration in different areas of the sewage tank; this helps to improve the distribution of dissolved oxygen in the sewage and improve the sewage treatment effect;

[0047] 2. Due to the existence of the floating plate, the third aeration pipe can be kept at a certain depth in the water, ensuring that the aeration bubbles can fully contact and mix with the sewage, and can not be limited to surface aeration, realizing deep water, upper water and surface aeration. BRIEF DESCRIPTION OF DRAWINGS

[0048] Fig. 1 is the installation position diagram of the aeration equipment in the embodiment of the present application;

[0049] Fig. 2 is a display diagram of the floating plate in the embodiment of the present application;

[0050] Fig. 3 is a display diagram of the first spiral groove in the embodiment of the present application;

[0051] Fig. 4 is a diagram of the relative positions of the first aeration pipe and the second aeration pipe in the embodiment of the present application.

[0052] The figure marks: 100, air supply mechanism; 200, first aeration pipe; 210, first aeration hole; 220, second aeration hole; 300, second aeration pipe; 310, third aeration hole; 400, rotating mechanism; 410, driving motor; 420, first gear; 430, second gear; 440, third gear; 450, fourth gear; 460, slip ring; 461, first spiral groove; 462, second spiral groove; 470, adjusting assembly; 471, fixed ring; 472, driving block; 500, floating aeration mechanism; 510, stand; 520, floating plate; 530, third aeration pipe; 531, fourth aeration hole; 540, traction rope; 600, sewage pool. DETAILED DESCRIPTION

[0053] The following Figs. 1 to 4 The present application is further described in detail.

[0054] The embodiment discloses an energy-saving aeration equipment for sewage treatment.

[0055] Referring to Figs. 1 to 4 , the energy-saving aeration equipment for sewage treatment comprises an air supply mechanism 100 arranged on a sewage pool 600, a first aeration pipe 200 arranged at the bottom of the sewage pool 600 and connected with the air supply mechanism 100, a second aeration pipe 300 sleeved on the first aeration pipe 200 and capable of rotating, and a rotating mechanism 400 arranged on the sewage pool 600 and used for driving the second aeration pipe 300 to rotate, wherein the first aeration pipe 200 is provided with a first aeration hole 210 and a second aeration hole 220, the second aeration pipe 300 is provided with a third aeration hole 310, and the third aeration hole 310 is communicated with the first aeration hole 210 or the second aeration hole 220 as the rotation is completed; when the sewage pool 600 is treated, the first aeration pipe 200 is supplied with air by the air supply mechanism 100, the rotation of the second aeration pipe 300 is realized by the rotating mechanism 400, the communication between the first aeration hole 210 or the second aeration hole 220 and the third aeration hole 310 is completed, the aeration direction in the sewage pool 600 is changed, and the distribution of oxygen and the disturbance to sewage are improved.

[0056] The first aeration pipe 200 can be provided in plurality and uniformly arranged on the bottom wall of the sewage tank 600, one end of the first aeration pipe 200 is a blind pipe, the first aeration holes 210 and the second aeration holes 220 can be provided in plurality, each group includes plurality, the plurality of groups of first aeration holes 210 and the plurality of groups of second aeration holes 220 are uniformly arranged along the circumference of the first aeration pipe 200; the other end of the first aeration pipe 200 is connected with the air supply mechanism 100, the air supply mechanism 100 includes a high-pressure air cannon or a fan or an air compressor fixedly connected on the side wall of the sewage tank 600; the third aeration holes 310 on the second aeration pipe 300 are provided in plurality and correspondingly provided with one group of first aeration holes 210 or one group of second aeration holes 220, and switching of communication is realized by rotation.

[0057] The rotating mechanism 400 corresponds to the second aeration pipe 300 and includes a driving motor 410 fixedly connected on the outer side wall of the sewage tank 600, a first gear 420 is keyed connected on the output shaft of the driving motor 410, the second aeration pipe 300 extends through the side wall of the sewage tank 600 to the outside and is sleeved with a slip ring 460, the slip ring 460 is slidingly connected with the second aeration pipe 300 and the sliding direction coincides with the axis of the second aeration pipe 300; a second gear 430 is coaxially fixedly connected on the slip ring 460, the first gear 420 and the second gear 430 can be engaged.

[0058] A third gear 440 is also keyed connected on the output shaft of the driving motor 410, the wheel diameter of the third gear 440 is smaller than that of the first gear 420, a fourth gear 450 is rotatably connected on the outer side wall of the sewage tank 600, the fourth gear 450 is engaged with the third gear 440, and the second gear 430 can be engaged with the fourth gear 450 along with the sliding of the slip ring 460.

[0059] In order to facilitate the sliding of the slip ring 460, an adjusting assembly 470 is arranged on the sewage tank 600, the adjusting assembly 470 includes a fixed ring 471 fixedly connected on the side wall of the sewage tank 600, the fixed ring 471 is sleeved on the outside of the slip ring 460 and is slidingly connected with the slip ring 460, a driving block 472 is fixedly connected on the inner wall of the fixed ring 471; a first helical groove 461 and a second helical groove 462 are arranged on the circumferential wall of the slip ring 460, the rotation directions of the first helical groove 461 and the second helical groove 462 are opposite, and the first helical groove 461 and the second helical groove 462 are correspondingly connected at the head and tail and smoothly transition at the connection position.

[0060] In order to facilitate the smooth transition switching of the first gear 420 or the fourth gear 450 and the second gear 430, a transition groove is arranged on the side wall of the second gear 430 and the fourth gear 450 close to each other.

[0061] In other embodiments, the adjusting assembly 470 is an adjusting cylinder, the adjusting cylinder is fixedly connected on the sewage tank 600, and the piston rod is connected with the slip ring 460 and drives the slip ring 460 to slide.

[0062] In order to increase the disturbance to the sewage in the sewage tank 600, a disturbance vane is fixedly connected to the outer side wall of the second aeration pipe 300, and the disturbance vane disturbs the water when the second aeration pipe 300 rotates.

[0063] In order to increase the aeration of the sewage, a floating aeration mechanism 500 is further arranged in the sewage tank 600, and the floating aeration mechanism 500 comprises a stand 510 fixedly connected to the bottom of the sewage tank 600, two vertical rods integrally formed on the stand 510, and a floating plate 520 slidably connected to the two vertical rods, wherein the floating plate 520 floats on the water surface; a third aeration pipe 530 is fixedly connected to the floating plate 520, and the third aeration pipe 530 is connected to the air supply mechanism 100 through a hose; a plurality of fourth aeration holes 531 are formed in the third aeration pipe 530, and some of the fourth aeration holes 531 are arranged to face the bottom wall of the sewage tank 600, and some of the fourth aeration holes 531 are arranged to tilt towards the side wall.

[0064] In order to facilitate the adjustment of the position of the floating plate 520, a traction rope 540 is fixedly connected to the second aeration pipe 300, and the other end of the traction rope 540 is connected to the floating plate 520 or the second aeration pipe 300, so that the traction rope 540 is wound when the second aeration pipe 300 rotates, and the floating plate 520 and the second aeration pipe 300 are immersed in the water.

[0065] The implementation principle of the embodiment 1 of the present application is as follows: when sewage is treated, the air supply mechanism 100 is started to supply air to the first aeration pipe 200, and the driving motor 410 is started to drive the first gear 420 to rotate, the first gear 420 drives the second gear 430 to rotate, the second gear 430 drives the slip ring 460 and the second aeration pipe 300 to rotate, and the driving block 472 is driven to rotate from the first spiral groove 461 to the second spiral groove 462 in the process of the rotation of the slip ring 460, in the process, the first gear 420 is separated from the second gear 430, the second gear 430 is engaged with the fourth gear 450, the second aeration pipe 300 reversely rotates, the disturbance direction is switched, the aeration effect is increased, the oxygen in the water is more uniformly distributed, and the microorganisms are more easily to decompose the organic matter.

[0066] In the process of the rotation of the second aeration pipe 300, the traction rope 540 is wound on the second aeration pipe 300, so that the floating plate 520 sinks into the water, and the fourth aeration holes 531 aerate the upper layer of water.

[0067] The above are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and therefore: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An energy efficient aeration device for sewage treatment, comprising: The air supply mechanism (100) is arranged outside the sewage pool (600), and the first aeration pipe (200) is arranged in the sewage pool (600) and is connected and communicated with the air supply mechanism (100), and a plurality of first aeration holes (210) and a plurality of second aeration holes (220) are arranged on the first aeration pipe (200); characterized in that: The second aeration pipe (300) is rotatably arranged on the sewage pool (600) and is sleeved on the first aeration pipe (200), a plurality of third aeration holes (310) corresponding to the first aeration holes (210) or the second aeration holes (220) are arranged on the second aeration pipe (300), and the third aeration holes (310) are communicated with the first aeration holes (210) or the second aeration holes (220) by rotation. The rotating mechanism (400) is arranged on the sewage pool (600) and is connected with the second aeration pipe (300) and used for driving the second aeration pipe (300) to rotate.

2. The energy efficient aeration device for sewage treatment according to claim 1, characterized in that: The rotating mechanism (400) comprises: The driving motor (410) is arranged on the sewage pool (600); The first gear (420) is connected to the output shaft of the driving motor (410) by means of a key and is rotatably connected to the sewage pool (600); The second gear (430) is coaxially connected with the second aeration pipe (300) and is engaged with the first gear (420).

3. The energy efficient aeration device for sewage treatment according to claim 2, characterized in that: The rotating mechanism (400) further comprises: The third gear (440) is coaxially connected with the first gear (420); The fourth gear (450) is rotatably arranged on the sewage pool (600) and is engaged with the third gear (440) and can be engaged with the second gear (430); The slip ring (460) is arranged on the second aeration pipe (300), and the second gear (430) is arranged on the slip ring (460).

4. The energy efficient aeration device for sewage treatment according to claim 3, characterized in that: The rotating mechanism (400) further comprises: The adjusting assembly (470) is arranged on the sewage pool (600) and is connected with the slip ring (460) and used for adjusting the position of the slip ring (460).

5. The energy efficient aeration device for sewage treatment as claimed in claim 4, wherein: First and second helical grooves (461) and (462) are arranged on the outer wall of the slip ring (460), the rotation directions of the first and second helical grooves (461) and (462) are opposite, the first and second helical grooves (461) and (462) are connected in a smooth and corresponding manner, and the adjusting assembly (470) comprises: The fixed ring (471) is arranged on the sewage pool (600) and is slidably connected with the slip ring (460); The driving block (472) is arranged on the fixed ring (471) and is slidably arranged in the first helical groove (461) and can be slid into the second helical groove (462).

6. The energy efficient aeration device for sewage treatment as claimed in claim 3, wherein: Transition grooves are arranged on the side walls of the fourth gear (450) and the first gear (420) close to each other and used for switching the engagement state of the second gear (430).

7. The energy-efficient aeration device for sewage treatment according to any one of claims 1 to 6, characterized in that: The floating aeration mechanism (500) comprises: The stand (510) is arranged in the sewage pool (600). A floating plate (520) is arranged to slide on the stand (510) and float in the sewage pool (600); A third aeration pipe (530) is arranged on the floating plate (520) and connected with the air supply mechanism (100), and a plurality of fourth aeration holes (531) are formed in the third aeration pipe (530).

8. The energy efficient aeration device for sewage treatment according to claim 7, characterized in that: The floating aeration mechanism (500) further comprises: A traction rope (540) is arranged on the second aeration pipe (300) and connected with the third aeration pipe (530), and is wound along with the rotation of the second aeration pipe (300).

9. The energy efficient aeration device for wastewater treatment according to any one of claims 1 to 6, characterized in that: The second aeration pipe (300) is provided with a disturbing vane.

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