Aquaculture water oxygenation systems and oxygenation control methods

Abstract

An aeration system and aeration control method for aquaculture water bodies are disclosed. The system includes at least one suspended aeration system, a main air duct, a high-speed centrifugal fan, and a surge warning system. The surge warning system includes a pressure sensor installed in the main air duct, a frequency converter installed in the high-speed centrifugal fan, a reminder device for alerting the water body manager, and a controller electrically or communicatively connected to the pressure sensor, frequency converter, and reminder device. The method includes: acquiring pressure data within the main air duct; acquiring rotational speed data of the high-speed centrifugal fan; comparing the pressure data with a set value, predicting surge, and issuing a warning. By employing a suspended aeration system and a high-speed centrifugal fan, the system offers advantages such as easy relocation, high efficiency, and low energy consumption. The combination of the surge warning system further improves system reliability.

Description

Technical Field

[0001] This invention relates to the field of oxygenation in aquaculture, specifically to an aquaculture water oxygenation system and oxygenation control method. Background Technology

[0002] There are currently two main types of aquaculture oxygenation systems.

[0003] The first type involves installing rigid air pipes around the aquaculture pond, connecting them to the outlet of a Roots blower. Aeration discs are placed at the bottom of the pond, connected to the rigid air pipes via flexible hoses. During operation, the Roots blower outputs pressurized gas, which is then fed into the aeration discs through the rigid air pipes and hoses. The gas is then blown into the water through nano-sized pores on the discs, forming small bubbles that fully contact the water, thus oxygenating it. However, because the aeration discs are located at the bottom of the pond, this type of system is prone to clogging due to feed sedimentation, affecting oxygenation efficiency. Furthermore, it is not convenient to transfer the system to other bodies of water for reuse. Additionally, this type of system uses a Roots blower as the air source, resulting in low oxygenation efficiency and high energy consumption.

[0004] The second type is an aerator that floats on the water surface and agitates the water. Its principle is that a motor drives a paddle to rotate under load. The rotation of the paddle stirs the water, causing it to splash and come into contact with the air, thus achieving oxygenation. The effective oxygenation range of this type of aeration system is an area with a radius of 10 meters centered on the aerator, and it is commonly found in open-air aquaculture ponds. Because this type of aeration system achieves oxygenation through the contact between the water splashes caused by the paddles and the air, it also suffers from low oxygenation efficiency and high energy consumption.

[0005] Another type of suspended aeration technology integrates an aerator blower, solar collector panel, battery, aeration disc, and suspended air cushion into a single unit, which is suspended in the water to aerate it. Because this type of aeration device relies on solar power, it must be equipped with a battery and solar collector panel. Due to limitations in buoyancy, it cannot accommodate a high-powered aerator blower, thus limiting its applicability to large-area aeration and making it suitable only for open-air aquaculture ponds.

[0006] High-speed centrifugal blowers are a type of high-efficiency blower. However, because the aeration discs in aquaculture are easily clogged by the feed, which can cause surging and trigger the shutdown protection, resulting in losses of aquatic products, high-speed centrifugal blowers have not been used in aquaculture aeration. Summary of the Invention

[0007] The purpose of this invention is to provide an aeration system and aeration control method for aquaculture water, so as to at least to some extent solve the above-mentioned defects in related technologies.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0009] An aquaculture water oxygenation system, comprising:

[0010] At least one suspended aeration system is suspended in the water of the aquaculture pond;

[0011] The main air pipe is located on the side of the aquaculture pond. The main air pipe includes an air inlet and an air outlet. The air outlet is fluidly connected to the suspended aeration system.

[0012] A high-speed centrifugal fan is installed on the side of the aquaculture pond and is fluidly connected to the air inlet of the main air pipe; and

[0013] Surge warning system, including:

[0014] A pressure sensor is installed in the main air pipe;

[0015] The frequency converter is installed in the high-speed centrifuge;

[0016] A reminder device for alerting water body managers; and

[0017] A controller that is electrically or communicatively connected to the pressure sensor, frequency converter, and reminder device.

[0018] Optionally, the alerting device is an on-site alarm installed in the aquaculture pond; and / or a remote communication device.

[0019] Optionally, a shock-absorbing joint and / or a check valve are connected between the air inlet and outlet ends of the main air pipe.

[0020] Optionally, the aquaculture water oxygenation system further includes:

[0021] At least one suspended water parameter detector is suspended in the water of an aquaculture pond, the suspended water parameter detector including a communication module; and

[0022] The management terminal is communicatively connected to the suspended water parameter detector and the controller, and is used to receive water parameters from the suspended water parameter detector and send speed adjustment data to the frequency converter.

[0023] Optionally, the suspended water parameter detector is fixed to the suspended aeration system.

[0024] Optionally, the suspended water parameter detector is independent of the suspended aeration system.

[0025] Optionally, the suspended water parameter detector includes multiple sets of sensors spaced apart along the water depth direction.

[0026] Optionally, the aquaculture water oxygenation system further includes an oxygen supply device, the oxygen outlet of which is connected to the air inlet of the high-speed centrifugal fan.

[0027] Optionally, the suspended aeration system includes multiple suspended aeration devices, which are spaced apart in the water body and fluidly connected by a second hose. The second hose is provided with a second pull rope in parallel, and the length of the second pull rope is less than the length of the second hose.

[0028] The suspended aeration system is connected to the air outlet of the main air pipe via a first flexible hose. A first pull rope is arranged in parallel with the first flexible hose. The first pull rope is attached to a fixed object at the side of the aquaculture pond. The length of the first pull rope is less than the length of the first flexible hose.

[0029] Optionally, the suspended aeration device includes:

[0030] The support includes a top, a bottom, and a connecting rod, wherein the connecting rod connects the top and bottom of the frame as a whole, and the top of the frame includes a distribution pipe;

[0031] Multiple suspending components are disposed around the periphery of the bracket and connected to the top of the bracket; and

[0032] Multiple aeration discs are spaced apart at the bottom of the frame, and the aeration discs are fluidly connected to the distribution pipe via a third flexible hose.

[0033] Optionally, the top and bottom of the frame are made of rigid tubular material, and the support also includes a counterweight.

[0034] Optionally, the counterweight is disposed within the tube forming the bottom of the frame.

[0035] Optionally, the top of the frame includes a first frame, the shape of which is rectangular, circular, triangular, polygonal, cross-shaped, star-shaped, or irregular; the bottom of the frame includes a second frame, the shape of which is rectangular, circular, triangular, polygonal, cross-shaped, star-shaped, or irregular; the connecting rod includes a lower end and an upper end, the lower end of the connecting rod is connected to the second frame, and the upper end of the connecting rod is connected to the first frame; a perforated plate or metal mesh is fixed inside the second frame, and the plurality of aeration discs are spaced apart on the perforated plate or metal mesh.

[0036] Optionally, the first frame is provided with a main air inlet, and the distribution pipe is disposed between two opposite sides of the first frame, and the distribution pipe is in fluid communication with the first frame.

[0037] Optionally, the top of the frame includes a first frame, the shape of which is rectangular, circular, triangular, polygonal, cross-shaped, star-shaped, or irregular; the bottom of the frame includes multiple sub-supports, the shape of which is cross-shaped, star-shaped, or straight, each of the multiple sub-supports being connected to the top of the frame via a connecting rod, and the multiple aeration discs being fixed to the multiple sub-supports accordingly.

[0038] Optionally, the connecting rod is a rigid tube filled with counterweight filler.

[0039] A method for controlling oxygenation in an aquaculture water oxygenation system, wherein the aquaculture water oxygenation system is any one of the above-mentioned water oxygenation systems.

[0040] The oxygenation control method includes the following steps:

[0041] Acquire pressure data in the main air pipe between the suspended aeration system and the high-speed centrifugal fan;

[0042] Obtain the rotational speed data of the high-speed centrifugal fan;

[0043] Determine whether the pressure data is greater than the set value. If the pressure data is greater than the set value, output speed adjustment data to the frequency converter.

[0044] The pressure data in the main airway is acquired again to determine whether the pressure data has returned to the set value. If the pressure data has not returned to the set value, a surge warning signal is issued.

[0045] Compared with the prior art, the present invention has at least the following beneficial effects:

[0046] The use of a suspended aeration system and a high-speed centrifugal fan gives this aquaculture water oxygenation system the advantages of easy transfer to other water bodies, high oxygenation efficiency, and low energy consumption. The inclusion of a surge warning system composed of pressure sensors and frequency converters allows for timely warnings of impending surges by monitoring the pressure in the main air pipe connecting the suspended aeration system and the high-speed centrifugal fan, preventing the aquaculture water oxygenation system from shutting down due to surges and thus improving the reliability of the system. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of an aquaculture water oxygenation system in some embodiments;

[0048] Figure 2 A flowchart of the oxygenation control method;

[0049] Figure 3 This is a schematic diagram of the support frame for a suspended aeration device in some embodiments. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0051] Unless otherwise specified, the terms "first," "second," etc., in this application are used to distinguish different components with the same name and do not imply any degree of importance or sequential relationship.

[0052] Reference Figure 1 Some embodiments of the aquaculture water oxygenation system include: a suspended aeration system 101, a main air pipe 103, a high-speed centrifugal fan 110, a pressure sensor 106, a frequency converter 111, a communication device 113, an alarm 115, and a controller 116.

[0053] The suspended aeration system 101 is suspended in the water of the aquaculture pond to deliver pressurized gas into the water, generating microbubbles and creating an aeration effect to oxygenate the water. The number of suspended aeration systems 101 can be determined according to the size of the water body; there can be one or multiple systems.

[0054] Each suspended aeration system 101 can be composed of one or more suspended aeration devices. When composed of multiple suspended aeration devices, the devices are connected by a second flexible hose and a second pull rope, wherein the second pull rope and the second flexible hose are arranged side by side, and the length of the second pull rope is less than the length of the second flexible hose. The second flexible hose is used to transmit pressurized gas between the suspended aeration devices, and the second pull rope is used to prevent the movement of the suspended aeration devices from breaking or damaging the second flexible hose. Specific implementation methods of the suspended aeration devices will be further described in later paragraphs.

[0055] The main air pipe 103 is installed along the edge of the aquaculture pond, specifically along one or more edges, and is used to transport the pressurized gas generated by the high-speed centrifugal blower 110 to the suspended aeration system 101. The main air pipe 103 is preferably a rigid pipe, and its diameter should be compatible with the specifications of the high-speed centrifugal blower 110. The main air pipe 103 includes an inlet end and an outlet end.

[0056] The air inlet end of the main air pipe 103 is equipped with a vibration damping joint 105 and a check valve 104. The vibration damping joint 105 serves to block the transmission of vibration, preventing the vibration of the main air pipe 103 from being transmitted to the high-speed centrifugal fan 110, and preventing the vibration of the high-speed centrifugal fan 110 from being transmitted to the main air pipe 103. The vibration damping joint 105 can be a vibration damping rubber joint or a vibration damping connecting hose, etc. The check valve 104 prevents high-pressure gas from flowing back from the suspended aeration system 101 to the high-speed centrifugal fan 110; the check valve is a one-way valve.

[0057] A pressure sensor 106 is also provided at the air inlet end of the main air pipe 103 to detect the pressure inside the main air pipe 103.

[0058] The main air pipe 103 can have one or more outlets, each corresponding to a suspended aeration system 101. Each outlet of the main air pipe 103 is equipped with a switch valve 102, which controls the air supply to each suspended aeration system 101. The outlet of the main air pipe 103 is fluidly connected to the corresponding suspended aeration system 101 via a first flexible hose, supplying pressurized gas to the suspended aeration system 101. Furthermore, a first pull rope is arranged parallel to the first flexible hose. The length of the first pull rope is shorter than the length of the first flexible hose, and the first pull rope is attached to a fixed object at the edge of the aquaculture pond. The first pull rope serves two purposes: firstly, it provides traction, used to pull the suspended aeration system 101 to the edge of the aquaculture pond under external force; secondly, it protects the first flexible hose, preventing it from breaking or being damaged, for example, when the suspended aeration system 101 sways or shifts in the water.

[0059] A high-speed centrifugal fan 110 is installed on the side of the aquaculture pond and is fluidly connected to the air inlet of the main air pipe 103 to supply pressurized gas to the main air pipe 103. The pressurized gas in this application can be air, oxygen, or a mixture of air and oxygen.

[0060] In one implementation, an oxygen supply device can be installed at the air inlet of the high-speed centrifugal fan 110 to supply oxygen to the fan. This way, when the high-speed centrifugal fan 110 is operating, it can output a mixture of air and oxygen. The oxygen supply device can be, for example, an oxygen cylinder or an oxygen generator.

[0061] The frequency converter 111 is electrically connected to the high-speed centrifugal fan 110 and is used to adjust the speed of the high-speed centrifugal fan 110.

[0062] The communication device 113 is used to establish remote communication with the water body manager 114. The communication device 113 can be an existing wireless communication device or a wired communication device, and this embodiment does not limit the type of communication device.

[0063] Alarm 115 is used to issue an early warning at the aquaculture pond. Alarm 115 can be any existing alarm, such as a voice alarm, a buzzer alarm, or a light alarm. This embodiment does not limit the type of alarm.

[0064] The controller 116 is electrically connected to the pressure sensor 106, frequency converter 111, communication device 113, and alarm 115, forming a surge warning system. This system is used to predict surges and alert the water body manager 114 so that the fault can be eliminated promptly. The controller 116 can be, for example, an MCU (Central Processing Unit), a PLC (Programmable Logic Controller), or an industrial computer.

[0065] Reference Figure 2 An oxygenation control method includes the following steps:

[0066] Step S100: Obtain the pressure data in the main air pipe between the suspended aeration system and the high-speed centrifugal fan;

[0067] Specifically, pressure sensor 106 senses the pressure inside the main airway 103, and controller 116 collects the output signal of pressure sensor 106 to obtain pressure data inside the main airway 103. The sampling frequency can be set as needed.

[0068] Step S200: Obtain the rotational speed data of the high-speed centrifugal fan;

[0069] The frequency converter 111 is used to regulate the speed of the high-speed centrifugal fan 110, so the speed data of the high-speed centrifugal fan 110 can be obtained from the frequency converter 111. In addition, the speed data of the high-speed centrifugal fan 110 can also be obtained by installing a sensor on the high-speed centrifugal fan 110.

[0070] Step S300: Determine whether the pressure data is greater than the set value;

[0071] The setpoint is a preset value that represents the pressure threshold at which surge occurs. When the pressure data exceeds this setpoint, surge will occur; when the pressure data is below this setpoint, surge will not occur. The setpoint can be a specific point value or a range. The controller compares the pressure data collected in step S100 with the setpoint to obtain a judgment result.

[0072] Step S400: When the pressure data is greater than the set value, output speed adjustment data to the frequency converter according to the speed data collected in step S200;

[0073] Specifically, the controller 116 generates speed adjustment data to increase the speed of the high-speed centrifugal fan 110 based on the speed data collected in step S200, and sends it to the frequency converter 111. The frequency converter 111 controls the high-speed centrifugal fan 110 to run at a higher speed based on the speed adjustment data.

[0074] Step S500: Obtain the pressure data in the main airway again, and determine whether the pressure data has returned to the set value. If the pressure data has not returned to the set value, issue a surge warning signal.

[0075] Remote and on-site early warnings are possible. Remote early warnings are achieved through communication device 113, while controller 116 is pre-loaded with the water body manager's communication device information, such as a mobile phone number. If, after speed adjustment, the pressure in the main air pipe 103 still fails to return to normal, controller 116 determines that surge will occur and manual troubleshooting is required, and sends an early warning message to the water body manager via communication device 113. On-site early warnings are achieved through alarm 115, controlled by controller 116 to emit audible, visual, and verbal warning signals. Upon receiving the warning, water body manager 114 promptly investigates the fault, thereby preventing any impact on the oxygenation of the aquaculture water body.

[0076] The aquaculture water oxygenation system further includes a management terminal 112 and at least one suspended water parameter detector 109. The suspended water parameter detector 109 is suspended in the water of the aquaculture pond and is used to detect water parameters. Preferably, the suspended water parameter detector 109 includes multiple sensors, which can detect not only dissolved oxygen concentration but also other water parameters such as pH value and ammonia nitrogen concentration.

[0077] The suspended water parameter detector 109 includes a communication module, which can wirelessly transmit the detected water parameters to the management terminal 112.

[0078] The management terminal 112 is used by the administrator for remote monitoring. The management terminal 112 is communicatively connected to the suspended water parameter detector 109, and can receive water parameters sent by the suspended water parameter detector 109 to understand the water condition. The management terminal 112 is also communicatively connected to the controller 116. The administrator 114 can send speed adjustment data to the controller 116 through the management terminal 112. After receiving the speed adjustment data, the controller 116 adjusts the speed of the high-speed centrifugal fan 110 through the frequency converter 111 to regulate the dissolved oxygen concentration of the water.

[0079] The management terminal 112 can be, for example, a smartphone, a laptop, a desktop computer, etc.

[0080] In one manner, the suspended water parameter detector 109 is fixed to the suspended aeration system 101.

[0081] Alternatively, the suspended water parameter detector 109 is independent of the suspended aeration system 101, and the suspended water parameter detector 109 has an independent suspension support.

[0082] Optionally, each suspended water parameter detector 109 includes multiple sets of sensors, which are spaced apart along the water depth direction to acquire water parameters at different depths.

[0083] The suspended aeration device is a component of the suspended aeration system 101. Specifically, the suspended aeration device includes: a support frame, multiple suspended components, and multiple aeration discs.

[0084] Figure 3 An embodiment of the support structure is shown. For example... Figure 3 As shown, the support includes a top 301, a bottom 306, and a connecting rod 305. The connecting rod 305 connects the top 301 and the bottom 306 into one unit. The top 301 includes a distribution pipe 303.

[0085] In this embodiment, the top of the frame 301 includes a first frame 302, which is rectangular in shape. Three distribution pipes 303 are arranged in parallel between the front left and rear right sides of the first frame 302, and all three distribution pipes 303 are in fluid communication with the first frame 302. The first frame 302 is provided with a main air inlet 304. Pressurized gas enters the first frame 302 from the main air inlet 304, and then enters the three air distribution pipes 303 from the first frame 302. After being distributed by the three air distribution pipes 303, the gas is supplied to multiple aeration discs.

[0086] In this embodiment, the bottom 306 of the frame includes a second frame 307, which is rectangular in shape. The connecting rod 305 includes an upper end and a lower end; the lower end of the connecting rod 305 is connected to the second frame 307, and the upper end of the connecting rod 305 is connected to the first frame 302. This includes four connecting rods 305, respectively positioned at the four corners of the rectangle.

[0087] The bottom 306 of the frame also includes a metal mesh 308. The metal mesh 308 is fixed inside the second frame 306, and the fixing method can be to tie the metal mesh 308 to the second frame 306 with straps, ropes, wires, etc.

[0088] The multiple aeration discs (not shown) are spaced apart on the metal mesh 308 to achieve aeration throughout the bottom of the support frame. The aeration discs are secured to the metal mesh using nylon straps, wire, rope, or similar methods. Then, the air inlets on the aeration discs are connected to the air outlets on the distribution pipe 303 via a third flexible hose. The aeration disc is a commonly used aeration device with a ring-shaped structure and nano-sized micropores. When pressurized gas is introduced into the aeration disc, the gas enters the water through the micropores, creating an aeration effect. Further details about the aeration disc itself are omitted here.

[0089] The plurality of suspended components (not shown) are disposed around the perimeter of the support frame and connected to the top 301 of the frame. As one embodiment, four suspended components are used, each connected to one of the four corners of the first frame 302. When placed in water, the water exerts buoyancy on the four suspended components, which in turn exert an upward force on the support frame from the four corners of the first frame 302, thus providing more stable support for the suspended aeration device in the water. The suspended components can be buckets, balls, air bladders, or other similar devices.

[0090] In this embodiment, the top 301 and top 306 of the frame are constructed of rigid tubing, such as PVC pipe. Furthermore, the tubing constituting the bottom 306 of the frame is filled with counterweight filler, such as sand, steel balls, or iron rods, which can further reduce the impact of water flow on the stability of the suspended aeration device. Alternatively, heavy objects such as stones can be used as counterweights and tied to the bottom of the support frame, but collisions with the aeration discs should be avoided. Alternatively, when the connecting rod 305 is a rigid tubing, counterweight filler can be filled inside the connecting rod 305 to form the counterweight of the support frame.

[0091] As can be seen, this suspended aeration device includes a support frame and multiple suspension components. The multiple suspension components are arranged around the support frame and connected to the top 301 of the support frame, so that the support frame is subjected to buoyancy from multiple directions around it, and can be more stably suspended in the water. The support frame includes a top 301, a bottom 306, and a connecting rod 305. The connecting rod 305 connects the top 301 and the bottom 306 into one unit. The top 301 includes a distribution pipe 303. Multiple aeration discs are spaced apart at the bottom 306 and are fluidly connected to the distribution pipe 303 through a third flexible hose, so that the support of the aeration discs and the air supply pipe are separated, avoiding deformation of the air supply pipe after the aeration discs are subjected to external forces, thereby obtaining a more stable aeration effect.

[0092] As an alternative, the shape of the first frame 302 can also be circular, triangular, polygonal, cross-shaped, star-shaped, or irregular. The shape of the second frame 307 can also be circular, triangular, polygonal, cross-shaped, star-shaped, or irregular. The metal mesh 308 can be replaced by a perforated plate. The bottom 306 of the frame and the connecting rod 305 can also be made of solid parts, angle iron, etc., to give the frame greater weight, thus eliminating the need for a counterweight.

[0093] As another embodiment of the support, the support includes a top, a bottom, and connecting rods. The top of the support is implemented in the same way as the previous embodiment. The bottom of the support includes multiple sub-supports, which can be shaped like a cross, a star, or a straight line, for example. Each sub-support has an aeration disc fixed to it by straps. The bottom end of the connecting rod is connected to the sub-support, and the top end of the connecting rod is connected to the top of the support, thereby supporting the aeration disc on the support.

[0094] The present invention has been described in detail above through specific embodiments. These detailed descriptions are only intended to help those skilled in the art understand the content of the present invention and should not be construed as limiting the scope of protection of the present invention. Various modifications and equivalent transformations made by those skilled in the art to the above solutions under the concept of the present invention should be included within the scope of protection of the present invention.

Claims

1. An aquaculture water oxygenation system, characterized in that, include At least one suspended aeration system is suspended in the water of the aquaculture pond; The main air pipe is located on the side of the aquaculture pond. The main air pipe includes an air inlet and an air outlet. The air outlet is fluidly connected to the suspended aeration system. A high-speed centrifugal fan is installed on the side of the aquaculture pond and is fluidly connected to the air inlet of the main air pipe; as well as Surge warning system, including: A pressure sensor is installed in the main air pipe; The frequency converter is installed in the high-speed centrifugal fan; A reminder device for alerting water body managers; and The controller is electrically or communicatively connected to the pressure sensor, frequency converter, and warning device. The controller acquires the pressure data in the main air pipe from the output signal of the pressure sensor and the rotational speed data of the high-speed centrifugal fan. It compares the pressure data with a set value indicating a pressure threshold for surge. When the pressure data exceeds the set value, it generates speed adjustment data based on the rotational speed data to increase the speed of the high-speed centrifugal fan and sends it to the frequency converter. Then, it acquires the pressure data in the main air pipe again and compares it with the set value. When the pressure data does not return to the set value, it sends a surge warning message to the water body manager, indicating the need for manual investigation.

2. The aquaculture water oxygenation system according to claim 1, characterized in that, The alerting device is a field alarm installed in the aquaculture pond; and / or Remote communication device.

3. The aquaculture water oxygenation system according to claim 1, characterized in that, A shock-absorbing joint and / or a check valve are connected between the inlet and outlet ends of the main air pipe.

4. The aquaculture water oxygenation system according to claim 1, characterized in that, The aquaculture water oxygenation system also includes: At least one suspended water parameter detector, suspended in the water of an aquaculture pond, the suspended water parameter detector including a communication module; and The management terminal is communicatively connected to the suspended water parameter detector and the controller, and is used to receive water parameters from the suspended water parameter detector and send speed adjustment data to the frequency converter.

5. The aquaculture water oxygenation system according to claim 4, characterized in that, The suspended water parameter detector is fixed to the suspended aeration system; or The suspended water parameter detector is independent of the suspended aeration system.

6. The aquaculture water oxygenation system according to claim 4, characterized in that, The suspended water parameter detector includes multiple sets of sensors spaced apart along the water depth direction.

7. The aquaculture water oxygenation system according to claim 1, characterized in that, The aquaculture water oxygenation system also includes an oxygen supply device, the oxygen outlet of which is fluidly connected to the air inlet of the high-speed centrifugal fan.

8. The aquaculture water oxygenation system according to claim 1, characterized in that, The suspended aeration system includes multiple suspended aeration devices, which are spaced apart in the water body and fluidly connected by a second hose. The second hose is provided with a second pull rope in parallel, and the length of the second pull rope is less than the length of the second hose. The suspended aeration system is fluidly connected to the air outlet of the main air pipe through a first hose. A first pull rope is arranged in parallel with the first hose. The first pull rope is attached to a fixed object at the side of the aquaculture pond. The length of the first pull rope is less than the length of the first hose.

9. The aquaculture water oxygenation system according to claim 8, characterized in that, The support includes a top, a bottom, and a connecting rod, wherein the connecting rod connects the top and bottom of the frame as a whole, and the top of the frame includes a distribution pipe; Multiple suspension components are disposed around the periphery of the bracket and connected to the top of the bracket; as well as Multiple aeration discs are spaced apart at the bottom of the frame, and the aeration discs are fluidly connected to the distribution pipe via a third flexible hose.

10. The aquaculture water oxygenation system according to claim 9, characterized in that, The top and bottom of the frame are made of rigid tubular bodies, and the support also includes a counterweight.

11. The aquaculture water oxygenation system according to claim 10, characterized in that, The counterweight is disposed within the tube that forms the bottom of the frame.

12. The aquaculture water oxygenation system according to claim 9, characterized in that, The top of the frame includes a first border, the shape of which is rectangular, circular, triangular, polygonal, cross-shaped, star-shaped, or irregular. The bottom of the frame includes a second frame, the shape of which is rectangular, circular, triangular, polygonal, cross-shaped, star-shaped, or irregular. The connecting rod includes a lower end and an upper end, the lower end of the connecting rod is connected to the second frame, and the upper end of the connecting rod is connected to the first frame; A perforated plate or metal mesh is fixed inside the second frame, and the plurality of aeration discs are spaced apart on the perforated plate or metal mesh.

13. The aquaculture water oxygenation system according to claim 12, characterized in that, The first frame is provided with a main air inlet, and the distribution pipe is located between two opposite sides of the first frame, and the distribution pipe is in fluid communication with the first frame.

14. The aquaculture water oxygenation system according to claim 9, characterized in that, The top of the frame includes a first border, the shape of which is rectangular, circular, triangular, polygonal, cross-shaped, star-shaped, or irregular. The bottom of the frame includes multiple sub-supports, which are cross-shaped, star-shaped, or straight. Each of the multiple sub-supports is connected to the top of the frame via a connecting rod, and the multiple aeration discs are fixed to the multiple sub-supports.

15. The aquaculture water oxygenation system according to claim 9, characterized in that, The connecting rod is a rigid tube, and the rigid tube is filled with counterweight filler.

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