Wind-driven fish pond oxygenator

Abstract

The application discloses a wind power fish pond oxygenator, which comprises a wind collecting device and a water bead blowing device arranged at a high position. The wind collecting device comprises two wind collectors with horn mouths and a square tube, and the square tube is provided with a following wind port, an adverse wind port and a double-throw one-way valve. The water bead blowing device comprises a ladder water cylinder and an inclined chute, the ladder water cylinder is uniformly provided with a plurality of water pools, and the inclined chute is provided with a communication pool communicated with the water pools. One end of a wind delivery pipe is communicated with the square tube through a round wind port, and the other end of the wind delivery pipe is an air outlet pipe which is inserted into an inlet end of the ladder water cylinder and is located below the water surface. The wind collecting device is used for collecting wind power and amplifying wind speed, and high-speed airflow generated by the air outlet pipe is used for blowing water out of an outlet end of the ladder water cylinder, so that the water can be fully contacted with air and then falls into the fish pond. The application greatly improves the utilization efficiency of wind power, and can keep the oxygen content in the fish pond in a sufficient state without consuming any power, and is very suitable for application in the field of aquaculture.

Description

Technical Field

[0001] This invention relates to the field of aquaculture, specifically to a wind-powered aerator for fish ponds. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure, and these statements may constitute prior art. In the process of developing this invention, the inventors discovered at least the following problems in the prior art.

[0003] With the development of society and the economy, more and more people are choosing industries such as agriculture and fisheries. The introduction of modern equipment has greatly improved production efficiency and reduced labor costs, especially in the fisheries sector. Aquatic products require oxygen in aquaculture. When the dissolved oxygen concentration in water is 2 mg / L, the water will smell foul; and generally, when the dissolved oxygen concentration is less than 5 mg / L, organisms cannot survive. Therefore, people usually use aeration equipment to increase the dissolved oxygen in the water to achieve the dissolved oxygen level required for normal fish growth, solve the problem of fish surfacing due to oxygen deficiency, eliminate harmful gases, promote water convection and exchange, improve water quality, increase fishpond activity and primary productivity, and ultimately boost yields.

[0004] Existing aeration equipment used in fishponds typically uses electric motors or diesel engines as power sources. This not only incurs electricity costs, increasing the overall cost of aquaculture, but also, because it relies on electricity and the equipment is generally placed in the center of the pond to maximize the aeration range, even waterproof aerators are prone to leakage. Furthermore, considering the current state of aquaculture, most large-scale aquaculture areas are geographically remote, some even being newly developed swampy areas without electricity, thus limiting the development of fisheries in these regions.

[0005] To address the driving problem, some technologies have attempted to use non-electrical power sources to avoid the drawbacks of electric drives. Currently, solar and wind power are commonly used. However, solar power still relies on conversion into electricity, which shares the same drawbacks as electric power. Furthermore, the amount of electricity converted is limited and may not be sufficient to meet the aeration needs of fishponds. In addition, fishpond aeration needs to be continuous; prolonged periods of cloudy weather will inevitably have a significant impact on fishponds.

[0006] Compared to solar energy, wind power is more versatile as a driving force. It avoids the drawbacks of electrical leakage and is not affected by cloudy weather, making it more popular in aquaculture. For example, the patent application number 201811495003.1, titled "Fishpond Aerator," uses a fan mounted on a column to drive a transmission belt, which in turn drives an agitator wheel via the belt and a stirring shaft. This agitates the surrounding water, increasing the contact between the water and air, thus increasing the dissolved oxygen content in the water.

[0007] For example, the patent application number 201610925519.X, entitled "A Wind-Powered Fishpond Aeration Device," is similar. The difference is that the fan blades in this patent drive the active shaft to rotate, which in turn drives the driven shaft to rotate through gears. This causes the rotating water-absorbing blades to draw water from the fishpond and spray it outwards through the spray pipes, allowing the water to come into contact with the air and increasing the dissolved oxygen in the water.

[0008] However, after conducting in-depth research on the aforementioned wind-powered oxygenation equipment, the applicant discovered that the oxygenation effect of such equipment is not very ideal. It can often only be used as an auxiliary oxygenation device and still needs to be used in conjunction with other driving forces such as electricity. It is difficult to use it alone in actual environments. Summary of the Invention

[0009] In view of the above problems, the purpose of this invention is to solve some of the problems in the prior art, or at least alleviate these problems.

[0010] A wind-powered fishpond aerator, comprising:

[0011] An air collecting device is positioned at a high location by a supporting structure; the air collecting device includes an air collector with a flared mouth and a square tube; the small end of the air collector is connected to one end of the square tube; the square tube is connected to a round air outlet;

[0012] A water droplet blowing device includes a stepped water cylinder and an inclined trough; the stepped water cylinder is a cylindrical body including an outlet end and an inlet end, and several water pools are formed sequentially from bottom to top inside it through a water-blocking plate; the inclined trough is located on one side of the stepped water cylinder, and has a connecting pool adapted to the water pools inside it; the water surface of the connecting pool is open to the atmosphere; the connecting pool is located on the side of the water pool and is interconnected with the water pool through a connecting hole;

[0013] The second support supports the water droplet blowing device so that the outlet end of the stepped water tube is higher than its inlet end.

[0014] The air supply duct has a first end connected to the circular air inlet; the second end is an air outlet duct, which is immersed in the water and inserted into the inlet end of the stepped water cylinder; the air outlet duct faces the gap between the water baffle and the cylinder wall of the stepped water cylinder.

[0015] Furthermore, the air outlet pipe is close to the wall of the stepped water cylinder and remains parallel to the wall.

[0016] Preferably, the depth of the end of the air outlet pipe from the water surface is twice its diameter.

[0017] Furthermore, the air collector includes a symmetrically arranged forward air collector and a reverse air collector, respectively located at both ends of the square tube; the round air outlet is located in the middle of the square tube; the square tube has a forward air outlet and a reverse air outlet located on both sides of the round air outlet; a double-throw one-way valve adapted to the forward air outlet and the reverse air outlet is provided between them, which is used to open the forward air outlet or the reverse air outlet separately according to the direction of the wind.

[0018] Optionally, the upper part of the double-throw check valve is bonded to the square tube with soft leather; the lower end of the square tube has an arc-shaped wall adapted to the double-throw check valve.

[0019] Furthermore, the plurality of water pools are evenly distributed on the stepped water cylinder.

[0020] Furthermore, a baffle is provided at the outlet end of the stepped water cylinder.

[0021] Preferably, the water tank and the connecting pool have the same size and shape; the stepped water cylinder and the inclined trough have the same inclination angle.

[0022] The wind-powered fishpond aerator also includes a high-level tower to support the air collector.

[0023] The wind-powered fishpond aerator also includes a first support frame to support the air supply pipe.

[0024] The present invention has the following beneficial effects:

[0025] 1. This application combines an air collection device with a water droplet blowing device, which can work well even in light winds and ensure that water (especially finer droplets or mist) is blown out from a high position from the stepped water pipe, thus making full contact with the air and increasing the dissolved oxygen in the water. It does not consume any electricity and can work 24 hours a day to keep the oxygen content in the pond at a sufficient level. With the design of the position and orientation of the air outlet, it can not only generate more water waves, water clumps and water splashes, but also does not affect the generation of high-speed airflow above the pool. Moreover, the oxygenation efficiency is better in strong winds and it can fully adapt to automatic operation in all weather conditions.

[0026] 2. The two symmetrically arranged air collectors, combined with the double-throw one-way valve and square tube design, greatly improve the utilization rate of air power and can better cooperate with the water droplet blowing device to provide a stronger high-speed airflow, further improving the oxygenation efficiency. Attached Figure Description

[0027] The above-described structure of the present invention can be further illustrated by the non-limiting embodiments given in the following drawings.

[0028] Figure 1 This is a general structural diagram of the present invention;

[0029] Figure 2 This is the front view of the present invention;

[0030] Figure 3 This is a semi-perspective view of the water droplet blowing device of the present invention;

[0031] Figure 4 This is a cross-sectional view of the stepped water cylinder of the present invention (CC).

[0032] Figure 5 This is a perspective view of the stepped water cylinder of the present invention;

[0033] Figure 6 This is a cross-sectional view of the DD of the inclined groove of the present invention;

[0034] Figure 7 This is the left view of the present invention;

[0035] Figure 8 This is an enlarged view of EE, FF, and GG of the air collection device of the present invention;

[0036] Figure 9 This is an enlarged view of AA and BB (including when not in operation and when in operation) of the water tank and the connecting tank of the present invention.

[0037] Wherein: 1-Follow-wind air collector; 2-Follow-wind air collector; 3-Square tube; 4-Double-throw one-way valve; 5-Follow-wind outlet; 6-Follow-wind outlet; 7-Round air outlet; 8-High-level tower; 9-Air supply duct; 10-First support; 11-Second support; 12-Stepped water cylinder; 13-Water tank; 14-Water baffle; 15-Connecting tank; 16-Air outlet duct; 17-Baffle; 18-Inclined groove; 19-Connecting hole. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings. The embodiments of the present invention are only used to illustrate the present invention and not to limit the present invention. Various substitutions and modifications made based on ordinary technical knowledge and common practices in the art without departing from the technical concept of the present invention should be included within the scope of the present invention.

[0039] After conducting in-depth research on existing pure wind-powered aeration equipment, the applicant discovered that its low aeration efficiency is inextricably linked to structural defects. Using such devices, wind power must drive a windmill or fan blades to rotate, and then, through a series of mechanical structures, ultimately drive an agitator or driven shaft to bring the water into contact with the air. However, relying solely on wind power to drive so many mechanical structures not only results in low wind efficiency but, more importantly, requires a certain level of wind force to operate. In reality, such a level of wind force is relatively rare; most of the time, only a gentle breeze prevails. The entire system is often inoperable, or can only agitate the water or spray it to a low height, creating a single stream of water that fails to allow for sufficient contact between the water and air, let alone maintain a consistently high oxygen level in the pond, thus resulting in very low aeration efficiency.

[0040] In order to maintain a good oxygen content in the pond for a long time, the designed scheme needs to be able to operate well even in light winds, and also ensure that the water falls from a high position to make full contact with the air, so as to greatly improve the oxygenation efficiency. The applicant designed the following scheme.

[0041] like Figure 1 As shown in Figure 7, a wind-powered fishpond aerator includes:

[0042] The air collection device is positioned at a high location by a supporting structure; the air collection device includes an air collector with a flared nozzle and a square tube 3, such as... Figure 7 As shown; the small end of the air collector is connected to one end of the square tube 3; the square tube 3 is connected to the round air outlet 7, as shown. Figure 8 As shown;

[0043] The water droplet blowing device includes a stepped water cylinder 12 and an inclined trough 18, such as Figure 3 As shown; the stepped water cylinder 12 is a cylinder body, including an outlet end and an inlet end, and inside it, several water pools 13 are formed sequentially from bottom to top by water-blocking plates 14, such as Figure 4 Or as shown in Figure 5; the inclined trough 18 is located on one side of the stepped water cylinder 12, and has a connecting pool 15 adapted to the water pool 13, such as Figure 6 As shown; the water surface of the connecting pool 15 is open to the atmosphere; the connecting pool 15 is located on the side of the water pool 13 and is interconnected with the water pool 13 through the connecting hole 19, as shown. Figure 9 As shown;

[0044] Second support 11, such as Figure 1 As shown, the water droplet blowing device is supported so that the outlet end of the stepped water cylinder 12 is higher than its inlet end;

[0045] Air supply duct 9, such as Figure 7As shown, the first end is connected to the circular air vent 7; the second end is an air outlet pipe 16, which is immersed in the water and inserted into the inlet end of the stepped water cylinder 12, as shown. Figure 2 As shown in Figure 4; the air outlet pipe 16 is directed toward the gap between the water baffle plate 14 and the cylinder wall of the stepped water cylinder 12.

[0046] With the above structure, even a small breeze can drive the water well and blow it out from the outlet end of the stepped water tube 12. After making full contact with the air at a high position, it falls into the water, thereby achieving a good oxygenation effect.

[0047] The water-blocking plate 14 is adapted to the inner diameter of the stepped water cylinder 12, and after installation, there is a certain gap between it and the cylinder wall so that the sprayed water can pass through.

[0048] The reason why this application can achieve a good oxygenation effect even with a light breeze is mainly related to the improvement of the wind speed and the high-level water jetting device.

[0049] First, wind collection devices are used to collect and increase wind speed.

[0050] Because the air collector has a flared opening, the air collected at its large end can be transmitted through its small end to the square tube 3, and then through the air supply duct 9 to the air outlet duct 16. Let the inner diameter of the large end of the flared air collector be D, and the inner diameter of the air supply duct be d. Then the cross-sectional areas M1 and M2 at these two points are respectively:

[0051]

[0052] Let the wind speed at the large end of the air collector be V1, and the wind speed at the circular air outlet be V2 (i.e., the wind speed at the outlet of air duct 16). If we assume that the air is approximately incompressible, then:

[0053] M1V1=M2V2

[0054] but

[0055] Taking the following example, with the inner diameter of the large end of the air collector D = 1.2m, the inner diameter of the air supply duct d = 0.2m, and the wind speed at the air collector V1 = 1m / s, then the wind speed at the outlet of air duct 16 is... In reality, since air is compressible, the actual wind speed of V2 is approximately 30 m / s, equivalent to about 110 km / h. Therefore, it can be seen that the wind speed V2 at the outlet of the air duct 16 is much greater than the wind speed V1 at the large end of the air collector. Even a small amount of wind can produce a high-speed airflow at the outlet of the air duct 16.

[0056] Secondly, the high-speed airflow generated by the air outlet duct 16 is used to spray water from the outlet end of the high-level stepped water cylinder 12.

[0057] When the high-speed airflow is ejected from the exhaust pipe 16, because the exhaust pipe 16 penetrates into the water, the generated high-speed airflow will first impact the water, causing many waves, water clumps, and water splashes to form above the water surface. This, combined with the inlet end of its insertion into the stepped water cylinder 12, such as... Figure 4 As shown, water waves, water clumps, and splashes are propelled upwards by the high-speed airflow into the stepped water cylinder 12, where they are gradually dispersed, increasing in number and decreasing in size. The higher the flow, the greater the number and the smaller the individual droplets. Finally, some of them are blown out from the outlet of the stepped water cylinder 12, at which point they become even smaller droplets and beads. These smaller droplets and beads increase the surface area in contact with the air, and because they are blown out from a higher position and eventually fall into the pond, compared to a jet of water spraying through the air and then falling, they promote better contact between the water and air, increasing the oxygen content in the pond.

[0058] Water droplets and beads that are not blown directly from the outlet of the stepped water pipe 12 will impact the pipe wall or the water-blocking plate 14, and slowly fill the pool 13 below after falling down. For example... Figure 4 As shown, the two lowest pools S1 and S2 in the stepped water tank 12 are quickly filled by the rising water droplets and splashes because they are very close to the water surface. The third pool S3 is filled a little later, and the water droplets and splashes may not reach the fourth pool S4. When water droplets and beads hit the water-blocking plate 14 of pool S5, they fall down and slowly fill pool S4. Similarly, the other higher pools are filled later.

[0059] Since pool 13 and connecting pool 15 are connected, forming a communicating vessel, the water levels in pool 13 and connecting pool 15 are the same when there is no high-speed airflow, which is the highest water level (e.g., Figure 9 (As shown in the state when not in operation). When the high-speed airflow is ejected from the exhaust duct 16 again, the air pressure decreases accordingly due to the high air velocity at the surface of the water in pool 13. Since the surface of the connecting pool 15 is connected to the atmosphere, its air pressure is higher than that at the surface of the water in pool 13. This forces the water inside the connecting pool 15 into the connected pool 13 (e.g., ...). Figure 9 (As shown in the working state), and the water in pool 13 overflows from the baffle plate 14. The overflowing water is then blown into droplets and beads by the high-speed airflow and moves upward to the outlet end of the stepped water cylinder 12. This generates more droplets and beads that come out from the outlet end of the stepped water cylinder 12 and finally fall into the pond. Due to the design of pool 13 and connecting pool 15, the water that is not blown out can be kept at a higher position, making it easier for the high-speed airflow to blow it out from the outlet end of the stepped water cylinder 12, thereby increasing the total amount of water blown out at a higher level and thus increasing the oxygen content.

[0060] When the wind speed at the inlet of the air collector is very low or stops, no airflow is ejected from the outlet pipe 16. At this time, no water droplets are blown out from the outlet end of the stepped water cylinder 12. Because no airflow passes over the surface of the water in the pool 13, the surface pressure increases, forcing water into the connecting pool 15. Therefore, the water level in each pool 13, which was originally full, will drop slightly. However, the residual water on the walls of the stepped water cylinder 12 and the baffle plate 14 will quickly flow down to fill the pool 13 and wait for the next high-speed airflow to blow it out.

[0061] The high-speed airflow disperses the water in the pond into tiny droplets and beads, which then fall back into the pond. During this process, the surface area of ​​the water in contact with the air greatly increases, allowing a significant amount of oxygen to dissolve into the water. Furthermore, this aerator requires no electricity and can operate 24 hours a day, ensuring that the oxygen content in the pond remains consistently high.

[0062] According to the applicant's tests, the depth of the end of the air outlet duct 16 from the water surface is closely related to the water waves, water clumps, and splashes generated on the water surface, as well as the maintenance of the high-speed airflow above the pool 13. Through repeated experiments, the applicant found that a depth of twice the diameter of the end of the air outlet duct 16 from the water surface not only generates more water waves, water clumps, and splashes, but also maintains a high-speed airflow above the pool 13, thereby ensuring the normal operation of this application.

[0063] Since wind speeds vary at different times, in strong winds, if the outlet pipe 16 is incorrectly oriented (e.g., towards the baffle plate 14 or the cylinder wall), the resulting high-speed airflow will easily blow water towards the aforementioned structure and into the water tank 13, instead of directly blowing it out of the outlet of the stepped water cylinder 12, thus wasting the strong wind. To better utilize strong winds and improve oxygenation efficiency, such as... Figure 4 As shown, the air outlet pipe 16 is close to the cylinder wall of the stepped water cylinder 12 and is parallel to the cylinder wall, so that water can be blown out directly under a certain wind force, improving oxygenation efficiency, while not affecting operation under light wind conditions.

[0064] like Figure 5 As shown, the plurality of water tanks 13 are evenly distributed on the stepped water cylinder 12, which is more suitable for different wind speeds.

[0065] like Figure 3 As shown in Figure 4 or 5, the outlet end of the stepped water cylinder 12 is provided with a baffle 17, which allows the blown water to hit the baffle 17 and form finer water droplets and beads, so as to further increase the contact between the water and the air.

[0066] Preferably, the water tank 13 and the connecting pool 15 have the same size and shape; the stepped water cylinder 12 and the inclined groove 18 have the same inclination angle.

[0067] A single wind collector is sufficient to collect wind from only one direction. However, to maximize the utilization of wind power, such as... Figure 7 As shown in Figure 8, the air collector includes a symmetrically arranged downwind air collector 1 and a downwind air collector 2, respectively located at both ends of the square tube 3; the round air outlet 7 is located in the middle of the square tube 3; the square tube 3 is provided with a downwind outlet 6 and a downwind outlet 5, located on both sides of the round air outlet 7; a double-throw one-way valve 4 is provided between the downwind outlet 6 and the downwind outlet 5 to automatically open the downwind outlet 6 or the downwind outlet 5 separately according to the direction of the wind.

[0068] The downwind inlet 6 and the upwind inlet 5 inside the square tube 3 are respectively positioned opposite the downwind collector 1 and the upwind collector 2. When the downwind collector 1 collects airflow, it uses the airflow to blow the double-throw one-way valve 4 towards and block the upwind inlet 5, thus allowing the airflow collected by the downwind collector 1 to enter the air supply duct 9 through the round inlet 7, without leaking out through the upwind inlet 5. The same principle applies when the upwind collector 2 collects airflow. This structure maximizes the utilization of airflow and improves its efficiency.

[0069] Preferred options Figure 8 As shown, the upper part of the double-throw check valve 4 is bonded to the square tube 3 via soft leather; correspondingly, the lower end wall of the square tube 3 is an arc-shaped wall adapted to the double-throw check valve 4. The double-throw check valve 4 can rotate around the soft leather to open either the downstream or upstream inlet 5 independently. This structure significantly reduces the friction between the double-throw check valve 4 and the square tube 3 during movement, and the arc-shaped wall design at the lower end of the square tube 3 also works well with the double-throw check valve 4, preventing air leakage from the other end and thus more effectively improving airflow utilization. Correspondingly, the downstream inlet 6 and upstream inlet 5 are designed as follows... Figure 8 The angled position shown is for better coordination with the double-throw check valve 4.

[0070] The double-throw one-way valve 4 is slightly larger than the downwind vent 6 and the upwind vent 5 in order to block the vents.

[0071] Assuming the wind direction is parallel or approximately parallel to the center lines of the two flared nozzles, the wind blowing from the downwind collector 1 to the upwind collector 2 is called downwind. Conversely, the wind blowing from the upwind collector 2 to the downwind collector 1 is called upwind. When the downwind blows, the downwind port 6 is opened and the upwind port 5 is closed due to the rotation of the double-throw check valve 4. The airflow enters the circular air inlet 7 and flows into the air supply duct 9. When the upwind blows, the upwind port 5 is opened and the downwind port 6 is closed due to the rotation of the double-throw check valve 4. The airflow enters the circular air inlet 7 and flows into the air supply duct 9.

[0072] Of course, the upper part of the double-throw check valve 4 can also be hinged to the upper end of the square tube 3, or other existing connection methods can be used to achieve its single-opening function.

[0073] If the incoming wind is not a tailwind or a headwind, but rather a wind whose direction forms an angle α with the center lines of the two vents, the tailwind vent 6 or the headwind vent 5 can still be opened, but the speed of the airflow from the outlet duct 16 will decrease. Of course, if α = 90°, then the speed of the airflow from the outlet duct will be zero.

[0074] This application is primarily for use in fishponds. To position the air collection device at a high location to receive greater wind force, its support structure can employ a high-level tower 8, such as... Figure 7 As shown, it is used to support the air collector. The high-level tower 8 can be fixed on the foundation. In addition, it also includes a first bracket 10 to support the air supply pipe 9, so as to prevent the part of the air supply pipe 9 before it extends into the stepped water tank 12 from bending, which would prevent the air force from being unable to be transmitted.

[0075] In addition, the water droplet blowing device is best placed in the center of the fishpond to ensure more even oxygen distribution in the water. A foundation can be set up in the center of the fishpond, and a second support 11 can be installed on it to support the water droplet blowing device.

[0076] The square tube 3 can also be made of different shapes, and the shape of the double-throw check valve 4 can be matched with the inner diameter.

[0077] The downwind air collector 1 and the upwind air collector 2 are trumpet-shaped, and are the same size and shape, and are installed on the high-level tower 8.

[0078] This application can also be used for oxygenation in other environments, such as fish tanks and ponds. Simply place the water droplet blowing device inside the fish tank or pond and hang the air collecting device at a high place. Even in some high-rise buildings, simply hanging the air collecting device on a balcony or outside a window will allow it to operate normally. It can also be used in the transportation of aquatic products, such as installing an air collecting device on the roof of a truck transporting aquatic products and connecting it to the water droplet blowing device via an air supply pipe 9, using the wind power generated by the moving vehicle to oxygenate the water tank inside the truck.

[0079] This application uses pure wind power as the driving force, and through the cooperation of the air collection device and the water droplet blowing device, it can operate effectively in light or strong wind conditions, and can make the water fall from a high position to fully contact the air, thus greatly improving the oxygenation efficiency.

[0080] Unless otherwise specified, fixed connections can be riveting, welding, bolting, etc., while movable connections can be hinged, etc.

Claims

1. A wind-powered fishpond aerator, characterized in that, include: The air collecting device is positioned at a high position by a supporting structure; the air collecting device includes an air collector with a flared mouth and a square tube (3); the small end of the air collector is connected to one end of the square tube (3); the square tube (3) is connected to a round air outlet (7); The water droplet blowing device includes a stepped water cylinder (12) and an inclined trough (18); the stepped water cylinder (12) is a cylindrical body, including an outlet end and an inlet end, and several water pools (13) are formed from bottom to top inside it through a water baffle plate (14); the inclined trough (18) is located on one side of the stepped water cylinder (12), and a connecting pool (15) adapted to the water pools (13) is provided inside it; the water surface of the connecting pool (15) is open to the atmosphere; the connecting pool (15) is located on the side of the water pool (13) and is connected to the water pool (13) through a connecting hole (19); The second bracket (11) supports the water droplet blowing device so that the outlet end of the stepped water cylinder (12) is higher than its inlet end. The air supply pipe (9) has its first end connected to the circular air outlet (7); its second end is the air outlet pipe (16), which is immersed in the water and inserted into the inlet end of the stepped water cylinder (12); the air outlet pipe (16) faces the gap between the water baffle (14) and the cylinder wall of the stepped water cylinder (12); the air outlet pipe (16) is close to the cylinder wall of the stepped water cylinder (12) and is parallel to the cylinder wall; the depth of the end of the air outlet pipe (16) from the water surface is twice its diameter.

2. The wind-powered fishpond aerator according to claim 1, characterized in that, The air collector includes a symmetrically arranged wind collector (1) and a wind collector (2) located at both ends of the square tube (3); the round air outlet (7) is located in the middle of the square tube (3); the square tube (3) is provided with a wind outlet (6) and a wind outlet (5) located on both sides of the round air outlet (7); a double-throw one-way valve (4) is provided between the wind outlet (6) and the wind outlet (5) to open the wind outlet (6) or the wind outlet (5) separately according to the direction of the wind.

3. The wind-powered fishpond aerator according to claim 2, characterized in that, The upper part of the double-throw check valve (4) is bonded to the square tube (3) with soft leather; the lower end of the square tube (3) has an arc-shaped tube wall that is compatible with the double-throw check valve (4).

4. The wind-powered fishpond aerator according to claim 1, characterized in that, The several pools (13) are evenly distributed on the stepped water cylinder (12).

5. The wind-powered fishpond aerator according to claim 1, characterized in that, The outlet end of the stepped water cylinder (12) is provided with a baffle (17).

6. The wind-powered fishpond aerator according to claim 1, characterized in that, The water tank (13) has the same size and shape as the connecting pool (15); the stepped water cylinder (12) has the same inclination angle as the inclined groove (18).

7. The wind-powered fishpond aerator according to claim 1, characterized in that, It also includes a high-level tower (8) for supporting the air collector.

8. The wind-powered fishpond aerator according to claim 1, characterized in that, It also includes a first bracket (10) for supporting the air supply pipe (9).

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