CN111470710A

CN111470710A - Self-aeration oxygen-enriched ecological restoration device

Info

Publication number: CN111470710A
Application number: CN202010272634.8A
Authority: CN
Inventors: 燕文明; 陈渝青; 李思龙; 崔洵
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-07-31

Abstract

The invention discloses a self-aeration oxygen-enriched ecological restoration device, which comprises a rapid flow forming unit, an aeration unit, an oxygen-enriched water body conveying unit and a purification and absorption unit; the inlet end of the water inlet pipe is provided with a filter screen, the water inlet of the accelerator is communicated with the outlet end of the water inlet pipe, and the water outlet of the accelerator is positioned above the water inlet of the J-shaped water delivery pipe; the inlet end of the J-shaped water conveying pipe is positioned at a high position relative to the outlet end, and the inner diameter of the J-shaped water conveying pipe is gradually reduced from the inlet end to the outlet end; the outlet end of the J-shaped water pipe is connected to the purifying and gas mixing tank; a flip bucket is arranged at the bottom of the purification aeration tank along the water flow section direction and is used for lifting the water flow; the air supply system is provided with holes on two side walls of the purification aeration tank and is close to the flip bucket for oxygen enrichment; ceramsite is arranged in the purifying and gas mixing tank close to the water outlet and used for preliminarily absorbing N and P in water flow; the water outlet of the purifying and gas mixing tank is conveyed to the purifying and absorbing unit through the oxygen-enriched water body conveying unit.

Description

Self-aeration oxygen-enriched ecological restoration device

Technical Field

The invention belongs to the technical field of river water pollution prevention and treatment, and particularly relates to a self-aeration oxygen-enriched ecological restoration device.

Background

Under the influence of human activities, a large amount of nutrient substances such as nitrogen, phosphorus and the like enter slow-flow water bodies such as rivers, lakes, gulfs and the like, so that algae and other plankton are rapidly propagated, the dissolved oxygen content of the water body is reduced, the water quality is deteriorated, and the phenomenon of black and smelly water body is serious. Meanwhile, as the dissolved oxygen in the water body is reduced, the types of fishes and shrimps are continuously reduced, and the number of fishes and shrimps is greatly reduced. The eutrophication of the water body is aggravated, and plankton is propagated and gathered in a large quantity, so that the distribution range of higher aquatic plants and benthos is reduced, the lake ecosystem is degraded continuously, and the biodiversity is reduced. Therefore, the long-term effective increase of the dissolved oxygen content in water is the key for maintaining the ecological function of the water body.

Chinese patent CN200620074214.4 proposes an aeration device for flat-bottom outlet structure, which adopts the combination of flip bucket, aeration tank and drop sill for aeration, and has simple and easy structure, reduced engineering investment and improved engineering safety. The Chinese patent application CN201310752705.4 provides a pressure inlet aeration method and an aeration device for a gentle slope open channel, which are not limited by the slope of the gentle slope and can effectively improve the aeration and corrosion reduction effects of the flow wall surface of the gentle slope open channel. The Chinese patent application CN201520146485.5 provides a preposed aeration device suitable for a stepped energy dissipater, which can effectively improve the aeration height of the initial section of the stepped energy dissipater and the aeration effect along the way, and has the advantages of simple structure, convenient installation and replacement and good aeration effect.

The prior art has the following defects: the aeration device based on open channel or river course rivers is more difficult to realize at bank rainy day domatic confluence and tributary confluence condition, and the multi-purpose electric energy of current patent is not clean energy simultaneously and provides power.

Disclosure of Invention

The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a self-aeration oxygen-enriched ecological restoration device, which collects the confluence of a slope surface, utilizes water energy to drive an accelerator to form high-speed water flow, and utilizes the principle that the high-speed water flow is in contact with air and the air is mixed due to the turbulent motion of water particles to achieve the purpose of oxygen enrichment.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a self-aeration oxygen-enriched ecological restoration device comprises a rapid flow forming unit, an aeration unit, an oxygen-enriched water body conveying unit and a purifying and absorbing unit; the rapid flow forming unit comprises a filter screen, a water inlet pipe, an accelerator and a J-shaped water delivery pipe; the aeration unit comprises an air supply system, a flip bucket and a purification aeration tank;

the accelerator comprises a spiral sleeve, blades, guide vanes, a rotating wheel, a rotating shaft and an impeller; the spiral sleeve is arranged in the horizontal direction, and the spiral coil cloth forms at least one circle; blades are fixedly arranged in the spiral sleeve, the side opening of the inner ring of the spiral sleeve is provided with a circle of guide vanes; a rotating shaft is vertically arranged on the inner side of the spiral sleeve, a rotating wheel is sleeved on the upper part of the rotating shaft, and an impeller is connected and mounted on the lower part of the rotating shaft; the peripheral circumference of the rotating wheel corresponds to the position of the guide vane;

a filter screen is installed at the inlet end of the water inlet pipe, the water inlet of the accelerator is communicated with the outlet end of the water inlet pipe, and the water outlet of the accelerator is positioned above the water inlet of the J-shaped water delivery pipe; the inlet end of the J-shaped water conveying pipe is positioned at a high position relative to the outlet end, and the inner diameter of the J-shaped water conveying pipe is gradually reduced from the inlet end to the outlet end and is used for further improving the flow rate of water flow;

the outlet end of the J-shaped water conveying pipe is connected to the purifying and gas mixing tank; a flip bucket is arranged at the bottom of the purification aeration tank along the water flow cross section direction and is used for lifting the water flow; the air supply system is provided with holes on two side walls of the purification aeration tank and is close to the flip bucket, so that the space below the water tongue is continuously supplied with air for oxygen enrichment; ceramsite is arranged in the purifying and gas mixing tank close to the water outlet and used for preliminarily absorbing N and P in water flow;

and the water outlet of the purifying and gas mixing tank is conveyed to the purifying and absorbing unit through the oxygen-enriched water body conveying unit.

In some embodiments, the oxygen-enriched water body conveying unit comprises a porous flow distribution plate and a water conveying pipe; the water outlet of the purifying and gas mixing tank is connected to a porous flow distribution plate through a water outlet pipe, and the porous flow distribution plate is conveyed to the purifying and absorbing unit through a water conveying pipe.

In some embodiments, the flip bucket is located in the middle section of the purification aeration tank; the cantilever angle of the flip bucket is 8-12 degrees. Further, the cantilever angle of the flip bucket is 10 °.

In some embodiments, a valve is arranged at the water outlet of the accelerator and used for controlling the opening and closing of the water outlet of the accelerator.

In some embodiments, the aeration unit further comprises a clamping plate, and the ceramsite is fixed in the purification aeration tank through the clamping plate and is arranged along the water flow section direction.

In some embodiments, the purification aeration tank is installed obliquely, and the water inlet end of the purification aeration tank is positioned at a high position relative to the water outlet end.

In some embodiments, aquatic plants are planted in the purification and absorption unit. The aquatic plants include Oenanthe stolonifera and Macrocystis macrorhynchophylla.

In some embodiments, the blades are arranged radially along the axis of rotation.

In some embodiments, the connection mode between the water inlet of the "J" type water pipe and the water outlet of the accelerator is unsealed connection.

The invention is realized by the following principle: water enters the spiral sleeve from the water inlet pipe, radially flows into the rotating wheel from the periphery through the blades and the guide vanes, then flows out of the rotating wheel approximately in the axial direction, and drives the rotating shaft to rotate. In the runner, water flows radially in vertical blades, and during the flow, the water slides over the runner blades. Because the blades are provided with thin airfoil-shaped cross sections, when water flows through, one side of the blades generates low pressure, and the other side of the blades generates high pressure to form thrust, and simultaneously, the water can impact the bucket-shaped outlets of the blades to generate impact force before leaving the rotating wheel, and the thrust force and the impact force jointly push the rotating wheel to rotate, so that the rotating shaft and the impeller are driven to rotate at high speed; thereby rotating the water in the accelerator. When the impeller is submerged in water in the accelerator, the gate of the water inlet pipe is controlled to be closed, when the water body reaches a certain speed in the accelerator, water whirlwind is formed, the gate of the water outlet is controlled to be opened by the valve, high-speed water flow is generated by utilizing the principle of centrifugal force and enters the J-shaped water delivery pipe, and the water flow is further accelerated by the J-shaped water delivery pipe with the inner diameter gradually reduced. After water flow enters the purification aeration tank, the water flow is lifted by the flip bucket, and due to the existence of an air supply system, the space below the water tongue is continuously supplied with air, when the water tongue impacts the bottom of the aeration tank, a certain volume of air is doped by utilizing the principle that the interface of high-speed water flow and air are contacted and the gas and water are mixed due to the turbulent fluctuation of water particles, so that the effect of enriching oxygen is achieved, and simultaneously, N and P in the water body are primarily removed by ceramsite. The aerated water flow is conveyed to a purification and absorption unit, the purification and absorption effects of the cress and the macropolysaccharum on N, P are utilized to restore the eutrophic water body, meanwhile, the cress can be eaten, and the macropolysaccharum can be used for gardens, thereby creating economic value.

Has the advantages that: the self-aeration oxygen-enriched ecological restoration device provided by the invention can generate high-speed water flow through the rapid flow forming unit, increase the dissolved oxygen amount by utilizing the aeration unit and primarily absorb N and P, and purify and absorb nitrogen and phosphorus elements in the water body by using the aquatic plants, so that the water body is purified while the oxygen is enriched, the problem of water body eutrophication is solved, and the ecology is restored. Compared with the prior art, its obvious advantage lies in:

(1) the device is suitable for branch confluence and rainwater slope confluence.

(2) The water energy is used for providing the rotation power of the water turbine, so that the water flow is accelerated.

(2) The water is discharged after rotating, the water in the middle is extruded to the periphery under the action of centrifugal force, a water cyclone is formed in the middle, an airflow channel is formed from a water outlet to an accelerator ejection, and air enters the bottle from the channel, so that the resistance of the air to the water is reduced, and the water flow speed is accelerated.

(3) The principle that the turbulent motion of water particles at the interface of high-speed water flow and air makes the air and water mixed is utilized for aeration, and the efficiency is high.

(4) The aquatic plants are used for absorbing nitrogen and phosphorus elements in the water body, eutrophic elements such as nitrogen and phosphorus are effectively removed, the water body is purified, meanwhile, the cress can be eaten, and the macropolyphytes can be used for gardens, so that the economic value is created.

Drawings

FIG. 1 is a cross-sectional view of a self-aeration oxygen-enriched ecological remediation device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a helical casing in an embodiment of the invention;

FIG. 3 is an enlarged view of a portion of an aeration unit according to an embodiment of the present invention;

in the figure: the rapid flow forming unit 1, the aeration unit 2, the oxygen-enriched water body conveying unit 3, the filter screen 5, the water inlet pipe 6, the accelerator 7, the spiral casing pipe 8, the blades 9, the guide vanes 10, the rotating wheel 11, the rotating shaft 12, the impeller 13, the water outlet 14, the valve 15 and the 'J' -shaped water conveying pipe 16; the device comprises a gas supply system 17, a flip bucket 18, a purification gas mixing tank 19, ceramsite 20, a clamping plate 21 and a water outlet pipe 22; a porous flow distribution plate 23 and a water delivery pipe 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may also include different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 3, a self-aeration oxygen-enriched ecological restoration device comprises a rapid flow forming unit 1, an aeration unit 2, an oxygen-enriched water body conveying unit 3 and a purification and absorption unit; the rapid flow forming unit 1 comprises a filter screen 5, a water inlet pipe 6, an accelerator 7, a valve 15 and a J-shaped water delivery pipe 16; the aeration unit 2 comprises an air supply system 17, a flip bucket 18, a purification aeration tank 19, ceramsite 20, a clamping plate 21 and a water outlet pipe 22; the oxygen-enriched water body conveying unit 3 comprises a porous flow distribution plate 23 and a water conveying pipe 24; the purification and absorption unit comprises aquatic plants.

The rapid flow forming unit 1 is positioned at the leftmost side of the device, and the aeration unit 2 is connected with the water conveying pipe 13 in the upper left direction. The aeration unit 2 is connected with the oxygen-enriched water body conveying unit 3 through a water outlet 22, and water enters the purification and absorption unit through a water conveying pipe 23 and is purified and absorbed through aquatic plants.

In some embodiments, as shown in fig. 1 and 2, in the rapid flow forming unit 1, the water inlet pipe 6 is horizontally installed; a filter screen 5 is arranged at the inlet end of the water inlet pipe 6 to prevent impurities from entering the blocking device; the water inlet of the accelerator 7 is communicated with the outlet end of the water inlet pipe 6, and the water outlet 14 of the accelerator 7 is positioned above the water inlet of the J-shaped water delivery pipe 16;

in some embodiments, as shown in fig. 1 and 2, the accelerator 7 includes a spiral casing 8, blades 9, guide vanes 10, a runner 11, a rotating shaft 12, and an impeller 13; the spiral sleeve 8 is arranged in the horizontal direction, and the spiral coil cloth forms a circle; blades 9 are fixedly arranged in the spiral sleeve 8, the side opening of the inner ring of the spiral sleeve 8 is provided with a circle of guide vanes 10; a rotating shaft 12 is vertically arranged on the inner side of the spiral sleeve 8, a rotating wheel 11 is sleeved on the upper part of the rotating shaft 12, and an impeller 13 is connected and installed on the lower part of the rotating shaft 12; the peripheral circumference of the rotating wheel 11 corresponds to the position of the guide vane 10;

further, as shown in fig. 2, the vanes 9 are arranged radially along the rotating shaft 12.

Further, the water outlet 14 is controlled by a valve 15 and is automatically opened when the water in the accelerator 7 reaches a certain rotating speed.

The inlet end of the J-shaped water conveying pipe 16 is positioned at a high position relative to the outlet end, and the inner diameter of the J-shaped water conveying pipe 16 is gradually reduced from the inlet end to the outlet end and is used for further improving the flow rate of water flow; the connection mode between the water inlet and the water outlet 14 of the J-shaped water pipe 16 is unsealed connection, so that smooth outflow of high-speed water flow is ensured.

In some embodiments, as shown in fig. 1 and 3, in the aeration unit 2, the water inlet end of the purification aeration tank 19 is connected to the outlet end of the "J" -shaped water pipe 16 and is installed obliquely, and the water inlet end of the purification aeration tank 19 is located at a high position relative to the water outlet end.

A flip bucket 18 is arranged at the bottom of the middle section of the purifying and gas mixing tank 19 along the water flow section direction, the flip angle of the flip bucket 18 is about 10 degrees, and high-speed water flow is lifted; the air supply system 17 is provided with holes on two side walls of the purification air mixing tank 19 and is close to the flip bucket 18, and further, an air outlet of the air supply system 17 is flush with the lower part of the flip bucket 18, so that continuous air supply in the space below the water tongue is ensured.

And ceramsite 20 is arranged in the purification and gas mixing tank 19 and close to the water outlet, and the ceramsite 20 is clamped by two layers of clamping plates 21 and is used for preliminarily absorbing N and P in water flow.

In the oxygen-enriched water body conveying unit 3, a water outlet of the purifying and gas-mixing tank 19 is connected to a porous flow distribution plate 23 through a water outlet pipe 22, and the porous flow distribution plate 23 is conveyed to the purifying and absorbing unit through a water conveying pipe 24; the porous flow distribution plate 23 is arranged at the pipe orifice of the water outlet pipe 22; the water outlet pipe 22 is connected with the porous flow distribution plate 23, and can be adjusted according to actual conditions to achieve the effect of multi-azimuth large-range oxygen delivery.

Aquatic plants are planted in the purification and absorption unit, and N and P are purified and absorbed by the aquatic plants.

The device is arranged at a branch collecting position or a rainwater slope accumulated flow position, water is roughly filtered by a filter screen 5 and then enters a spiral sleeve 8 of an accelerator 7 from a water inlet pipe 6, the water radially flows into a rotating wheel 11 from the periphery through blades 9 and guide vanes 10 and then flows out of the rotating wheel approximately in the axial direction to drive a rotating shaft 12 to rotate, and the rotating shaft drives an impeller 13 to rotate so as to enable water in the accelerator 8 to rotate. When the impeller is submerged by water in the accelerator, the gate of the water inlet pipe is controlled to be closed, when the water body reaches a certain speed in the accelerator, water whirlwind is formed, the gate of the water outlet 14 is controlled to be opened by the valve 15, high-speed water flow is generated by utilizing the principle of centrifugal force and enters the J-shaped water conveying pipe 16, and the water flow is further accelerated in the J-shaped water conveying pipe with the gradually reduced inner diameter. After entering the purifying aeration tank 19, the water flow is lifted by the flip bucket 18, and due to the existence of the air supply system 17, the space below the water tongue is continuously supplied with air, when the water tongue impacts the bottom of the aeration tank, a certain volume of air is doped by utilizing the principle that the air and the water are mixed due to the turbulent motion of water particles by utilizing the interface of the high-speed water flow and the air, so that the effect of oxygen enrichment is achieved, and simultaneously, the ceramsite 20 is utilized to primarily absorb N and P. The aerated water flow is conveyed to a purification and absorption unit, the eutrophic water body is restored by utilizing the purification and absorption effect of the aquatic plants on N, P, meanwhile, the cress is edible, and the macropolybia can be used in gardens, thereby creating economic value.

The specific operation steps of the present invention are further described below with reference to fig. 1, fig. 2, and fig. 3:

the invention provides a self-aeration oxygen-enriched ecological restoration device, which comprises four parts, namely a rapid flow forming unit, an aeration unit, an oxygen-enriched water body conveying unit and a purification and absorption unit, and the installation and use method comprises the following steps:

the method comprises the following steps: the required height of the accelerator is adjusted and fixed, a water inlet pipe is connected, the water inlet pipe is connected with a spiral sleeve, blades are arranged on the inner wall of the spiral sleeve, a side opening is arranged at the inner ring side, a guide vane is arranged at the opening, and a rotating wheel is arranged in the center.

Step two: a central rotating shaft is arranged, a rotating wheel is sleeved on the rotating shaft, and an impeller is connected below the rotating shaft.

Step three: a filter screen is arranged in front of the water inlet pipe to prevent large garbage from entering the accelerator to cause blockage. Step four: a J-shaped water pipe is arranged below the water outlet of the accelerator, the purification and aeration tank is connected with the tail end of the J-shaped water pipe, and ceramsite is placed in the purification and aeration tank and clamped by two layers of clamping plates. Step five: the porous flow distribution plate is arranged at the opening of the water outlet pipe, is connected with a plurality of water pipes and is conveyed to the purification and absorption unit.

According to the invention, the rapid flow forming unit is used for forming high-speed water flow by using centrifugal force, water enters the aerator from the J-shaped water delivery pipe at high flow rate, the flip bucket is used for forming a water tongue, and air is continuously supplied by the air supply system to increase the dissolved oxygen in the water body. Then the aquatic plants absorb nitrogen and phosphorus elements in the water body to achieve the purpose of purification. The invention is realized by the following principle: the device is settled in the tributary and collects the department or the domatic ponding department of rainwater, and water carries out rough filtration through the filter screen, and the back gets into the spiral casing pipe from the inlet tube, and water radially flows in the runner from all around through blade and stator, then approximate axial outflow runner, and it is rotatory to drive the pivot, and the pivot drives the impeller rotation, makes the accelerator in the water body rotatory. When the water in the accelerator submerges the impeller, the valve is used for controlling the gate of the water inlet pipe to be closed, when the water body reaches a certain speed in the accelerator, water whirlwind is formed, the valve is used for controlling the gate of the water outlet to be opened, high-speed water flow is generated by utilizing the centrifugal force principle and enters the J-shaped water delivery pipe, and the water flow is further accelerated by the J-shaped water delivery pipe with the gradually reduced inner diameter. After entering the aeration tank, the water flow is lifted by the flip bucket, and due to the existence of the air supply system, the space below the water tongue is continuously supplied with air, and when the water tongue impacts the bottom surface of the aeration tank, a certain volume of air is doped by utilizing the principle that the interface of the high-speed water flow and the air are contacted and the air and the water are mixed due to the turbulent fluctuation of water particles, so that the effect of enriching oxygen is achieved. The aerated water flow is conveyed to a purification and absorption unit, the eutrophic water body is restored by utilizing the purification and absorption effect of the aquatic plants on N, P, meanwhile, the cress is edible, and the macropolybia can be used in gardens, thereby creating economic value.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the claimed invention.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. The self-aeration oxygen-enriched ecological restoration device is characterized by comprising an torrent forming unit (1), an aeration unit (2), an oxygen-enriched water body conveying unit (3) and a purification and absorption unit; the rapid flow forming unit (1) comprises a filter screen (5), a water inlet pipe (6), an accelerator (7) and a J-shaped water delivery pipe (16); the aeration unit (2) comprises an air supply system (17), a flip bucket (18) and a purification aeration tank (19);

the accelerator (7) comprises a spiral sleeve (8), blades (9), guide vanes (10), a rotating wheel (11), a rotating shaft (12) and an impeller (13); the spiral sleeve (8) is arranged in the horizontal direction, and the spiral coil cloth forms at least one circle; blades (9) are fixedly arranged in the spiral sleeve (8), an opening at the inner ring side of the spiral sleeve (8) is provided with a circle of guide vanes (10); a rotating shaft (12) is vertically arranged on the inner side of the spiral sleeve (8), a rotating wheel (11) is sleeved on the upper part of the rotating shaft (12), and an impeller (13) is connected and installed on the lower part of the rotating shaft (12); the peripheral circumference of the rotating wheel (11) corresponds to the position of the guide vane (10);

a filter screen (5) is installed at the inlet end of the water inlet pipe (6), the water inlet of the accelerator (7) is communicated with the outlet end of the water inlet pipe (6), and the water outlet (14) of the accelerator (7) is positioned above the water inlet of the J-shaped water delivery pipe (16); the inlet end of the J-shaped water conveying pipe (16) is positioned at a high position relative to the outlet end, and the inner diameter of the J-shaped water conveying pipe (16) is gradually reduced from the inlet end to the outlet end and is used for further improving the flow rate of water flow;

the outlet end of the J-shaped water pipe (16) is connected to a purifying and gas mixing tank (19); a flip bucket (18) is arranged at the bottom of the purifying and gas mixing tank (19) along the cross section direction of water flow and is used for lifting the water flow; the air supply system (17) is provided with holes on two side walls of the purification air mixing tank (19) and is close to the flip bucket (18), so that the space below the water tongue is continuously supplied with air to enrich oxygen; ceramsite (20) is arranged in the purification gas mixing tank (19) close to the water outlet and is used for preliminarily absorbing N and P in water flow;

and the water outlet of the purifying and gas mixing tank (19) is conveyed to the purifying and absorbing unit through the oxygen-enriched water body conveying unit (3).

2. The self-aeration oxygen-enriched ecological restoration device according to claim 1, wherein the oxygen-enriched water body conveying unit (3) comprises a porous flow distribution plate (23) and a water conveying pipe (24); the water outlet of the purifying and gas mixing tank (19) is connected to a porous flow distribution plate (23) through a water outlet pipe (22), and the porous flow distribution plate (23) is conveyed to the purifying and absorbing unit through a water conveying pipe (24).

3. The self-aeration oxygen-enriched ecological restoration device according to claim 1, wherein the flip bucket (18) is positioned at the middle section of the purification and aeration tank (19); the cantilever angle of the flip bucket (18) is 8-12 degrees.

4. The self-aeration oxygen-enriched ecological restoration device according to the claim 3, wherein the cantilever weir (18) has an angle of 10 °.

5. The self-aeration oxygen-enriched ecological restoration device according to claim 1, wherein a valve (15) is arranged at the water outlet (14) of the accelerator (7) and used for controlling the opening and closing of the water outlet (14) of the accelerator (7).

6. The self-aeration oxygen-enriched ecological restoration device according to the claim 1, wherein the aeration unit (2) further comprises a clamping plate (21), and the ceramsite (20) is fixed in the purification aeration tank (19) through the clamping plate (21) and is arranged along the water flow cross section direction.

7. The self-aeration oxygen-enriched ecological restoration device according to claim 1, wherein the purification aeration tank (19) is installed obliquely, and the water inlet end of the purification aeration tank (19) is located at a high position relative to the water outlet end.

8. The self-aeration oxygen-enriched ecological restoration device according to claim 1, wherein aquatic plants are planted in the purification and absorption unit.

9. Self-aerating oxygen-rich ecological restoration device according to claim 1, characterized in that the blades (9) are arranged radially along the shaft (12).

10. The self-aeration oxygen-enriched ecological restoration device according to any one of claims 1 to 9, wherein the connection mode between the water inlet of the J-shaped water pipe (16) and the water outlet (14) of the accelerator (7) is non-sealing connection.