A multifunctional water-pushing and flow-generating pond circulating water aquaculture system and its use method

Abstract

The present invention discloses a multifunctional water-pushing flow pond circulating water aquaculture system and a method for use. The multifunctional water-pushing flow pond circulating water aquaculture system includes a purification tank and a control device. The tank wall of the purification tank is provided with a water inlet and a water outlet. The water inlet is connected to a pumping pipe installed with a circulating water pump, and the water inlet end of the pumping pipe extends into the aquaculture pond; the purification tank is connected to an inserted nano-aeration device, and the top of the purification tank is provided with a foam discharge device; the water outlet is connected to an outlet pipe, and the outlet pipe is provided with a water-pushing flow aeration and oxygenation device located above the aquaculture pond, and the position height of the water-pushing flow aeration and oxygenation device is lower than the position height of the purification tank. The present invention integrates a variety of water treatment equipment into the purification tank through a reasonable layout, which not only reduces the overall spatial distribution size of the aquaculture system, but also can automatically push water flow aeration and oxygenation by gravity, greatly reducing the aquaculture cost. The water-pushing flow can improve the oxygenation effect and the diffusion rate of the drug throwing.

Description

Technical Field

[0001] The present invention relates to the technical field of pond aquaculture water circulation treatment, and in particular to a multifunctional water-pushing and flow-generating pond circulating water aquaculture system and a use method thereof. Background Art

[0002] Traditional pond aquaculture has been used for many years, and the process has always been characterized by a passive approach: pollution first, then remediation. In traditional pond aquaculture, from stocking to harvesting, which can last for several months, leftover feed and fish excrement from digestion and absorption are all deposited in the pond. After being soaked in the aquaculture water, these leftover feed and excrement are converted into water-soluble organic matter. Under the influence of temperature and time, these are further converted into harmful substances such as ammonia nitrogen and nitrite, leading to the massive reproduction and growth of various bacteria and viruses, and is one of the main causes of the frequent occurrence of various fish diseases. To alleviate the vicious cycle of aquaculture water quality, traditional pond aquaculture often involves continuous water changes, medication, and various biological agents to regulate water quality to ensure the safety of the aquacultured organisms. During the months-long aquaculture process, repeated water quality adjustments not only increase various risks in the aquaculture process, but also restrict aquaculture density, affecting harmless and healthy aquaculture. As a result, the traditional pond aquaculture model suffers from low yields, numerous diseases, poor efficiency, and high pollution.

[0003] For many years, pond aquaculture has followed the traditional model and has remained basically unchanged, which is mainly reflected in the following: (1) Traditional pond aquaculture adopts a passive aquaculture model of first polluting and then treating; (2) The aquaculture water lacks circulation and is static water aquaculture; (3) The problem of uneven fish size and polarization in the traditional pond aquaculture process has not changed; (4) The traditional pond aquaculture process relies on the manual spraying of animal health products and medicines; (5) The problems of traditional pond aquaculture relying on the weather, low technological content, poor risk resistance and poor economic benefits have not changed.

[0004] Therefore, in order to address the problems and pain points that arise in traditional pond farming, it is necessary to innovate new pond farming models, new processes and new technologies. Summary of the Invention

[0005] The present invention aims at the problems and pain points in the traditional pond aquaculture process, starts from the source of aquaculture problems, and changes the passive aquaculture situation of traditional pond static water aquaculture, pollution first and then treatment, relying on the weather, the water quality of aquaculture water is solved only by animal health products and drugs, the industry has low technological content and poor economic benefits. It provides a multifunctional water-pushing and flow-generating pond circulating water aquaculture system and its use method. The water-pushing and flow-generating pond circulating water aquaculture mode is adopted. By setting an overhead purification tank, the water in the aquaculture pond can be continuously pumped to the purification tank at a height for aeration and aeration by using a pumping pipe. The aeration device can realize kinetic energy conversion of the circulating water after treatment by utilizing the gravity potential energy of the water level difference to form an upward-sloping water-pushing flow, thereby returning to the breeding pond again and realizing unpowered secondary air cutting and oxygenation, which not only reduces the overall spatial distribution size of the breeding system, but also can automatically push water to create flow and increase oxygen through gravity. A 1.5KW aerator can be reduced at the water spraying place. Pushing water to create flow can improve the oxygenation effect and the diffusion rate of the drug throwing, and well solves the problems mentioned in the above-mentioned prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] In the first aspect, the present invention provides a multifunctional water-pushing flow pond circulating water aquaculture system, comprising a purification tank and a control device, wherein the tank wall of the purification tank is provided with a water inlet and a water outlet, the water inlet is connected to a pumping pipe installed with a circulating water pump, and the water inlet end of the pumping pipe extends into the aquaculture pond; the purification tank is connected to an inserted nano aeration device, and a foam discharge device is provided on the top of the purification tank; the water outlet is connected to an outlet pipe, and the outlet pipe is provided with a water-pushing flow aeration and oxygenation device located above the aquaculture pond at an end away from the purification tank, and the position height of the water-pushing flow aeration and oxygenation device is lower than the position height of the purification tank; the control device is respectively connected to the circulating water pump and the inserted nano aeration device.

[0008] Furthermore, the water-pushing flow aeration and oxygenation device includes a horizontally arranged water-pushing flow pipe, the middle portion of which is connected to the outlet end of the outlet pipe. The pipe wall of the water-pushing flow pipe is provided with a plurality of water outlet holes that spray water upward at an angle. Under the action of gravity, water in the purification tank flows out through the outlet pipe, forming a water-pushing flow that sprays upward at an angle at the outlet holes. After falling into the aquaculture pond, the water-pushing flow introduces a large amount of air, thereby achieving the purpose of unpowered secondary automatic oxygenation, increasing the oxygenation coverage area, and improving the oxygenation effect and the diffusion rate of the spraying agent.

[0009] Preferably, the angle between the central axis of the water outlet and the horizontal plane is 45 degrees. In this way, the water flow can reach more than 2.5 meters, which can increase the ejection stroke of the water flow and make the water flow more divergent at the water entry point, thereby improving the oxygenation effect, increasing the oxygenation coverage, facilitating the diffusion of the drug and allowing the drug to be evenly mixed with the aquaculture water after entering the water, and reducing the harm to the fish caused by excessive concentration due to uneven mixing.

[0010] Preferably, the water outlet hole is a long strip-shaped through hole, which can increase the lateral width of the water flow and the area in contact with the air, thereby improving the oxygenation effect and the diffusion rate of the drug throwing.

[0011] Furthermore, the insertable nano-aeration device includes an air pump, an air inlet pipe, and several parallel nano-aeration tubes. The air pump's outlet is connected to one end of the air inlet pipe, and the other end of the air inlet pipe is connected to one end of each nano-aeration tube. The other end of each nano-aeration tube is inserted into the inner cavity of the purification tank. The nano-aeration tube has an aeration port at one end located inside the purification tank. By activating the air pump, the water in the purification tank can be continuously aerated and oxygenated, while removing water-soluble organic matter from the water.

[0012] Furthermore, the foam discharge device includes a collection hood located at the top of the purification tank and a flow guide hood connected to the top of the collection hood. The flow guide hood is connected to a bubble discharge pipe, and the end of the bubble discharge pipe, which is remote from the flow guide hood, is connected to a foam collection bucket. In this way, the scum foam formed by aeration treatment can be collected by the collection hood after floating up, and finally drained by the flow guide hood into the bubble discharge pipe, and then collected in the foam collection bucket.

[0013] Furthermore, the purification tank is connected to an ozone addition device, which includes an ozone generator, a gas delivery pipeline, and a gas inlet provided on the wall of the purification tank. The gas delivery pipeline is connected to the ozone generator and the gas inlet at both ends. By activating the ozone generator, ozone can be continuously introduced into the aquaculture water in the purification tank to perform ozone sterilization and disinfection, thereby improving the water quality.

[0014] Alternatively, the purification tank is connected to an ozone addition device, which includes an oxygen source and ozone integrated device, a gas delivery pipeline, and a gas inlet provided on the wall of the purification tank. The pure oxygen output end and the ozone output end of the oxygen source and ozone integrated device are respectively connected to one end of the gas delivery pipeline through a valve, and the other end of the gas delivery pipeline is connected to the gas inlet. In this way, the oxygen source and ozone integrated device can choose to introduce ozone or pure oxygen into the purification tank.

[0015] Furthermore, the purification tank is connected to a water circulation device, which includes a circulation pipe, a circulation pump, and a circulation outlet and a circulation inlet provided on the tank wall of the purification tank. The circulation pump is connected in series to the circulation pipe, and the two ends of the circulation pipe are connected to the circulation outlet and the circulation inlet, respectively. By activating the circulation pump, water in the purification tank is pumped out and recirculated back into the purification tank, thereby achieving a circulating flow of water in the purification tank, thereby promoting and enhancing the effectiveness of ozone disinfection and aeration oxygenation treatment.

[0016] Furthermore, the purification tank is connected to an automatic liquid level balancing device, which includes a first vertical pipe and a second vertical pipe arranged in parallel, the upper ends of the first vertical pipe and the upper ends of the second vertical pipe being open, a guide pipe being connected between the first vertical pipe and the second vertical pipe, a reinforced drain outlet being provided on the wall of the purification tank, the lower end of the first vertical pipe being connected to the reinforced drain outlet, the lower end of the second vertical pipe being connected to the outlet pipe, and the height of the guide pipe being higher than the height of the outlet. During the water circulation process during the day, due to peak electricity consumption, the operating power of the circulating water pump is lower than that of normal use, resulting in slower pumping and a low water level in the purification tank. The water in the purification tank can be discharged smoothly through the outlet. However, at night, when electricity consumption is low, the operating power of the circulating water pump at this time increases compared to normal use, resulting in faster pumping and a corresponding increase in the water level in the purification tank. In order to prevent the water inside the purification tank from flowing upward into the guide cover, an automatic liquid level balancing device is provided to speed up drainage. Specifically, the first and second vertical pipes, along with the flow guide pipe, form an H-shaped communicating vessel. Because the flow guide pipe is located higher than the water outlet, once the water level inside the purification tank rises to a certain level, the water inside the purification tank can flow through the reinforced drain port, sequentially through the first vertical pipe, the flow guide pipe, and the second vertical pipe, and into the outlet pipe. Preferably, the diameter of the reinforced drain port is larger than that of the water outlet, thereby enhancing the rapid drainage effect and water level balancing capability of the automatic liquid level balancing device.

[0017] Furthermore, the outlet pipe is connected to a timed automatic dosing device, which includes a dosing bucket, a dosing pump, a dosing concentration regulating valve, and a dosing pipe. The water inlet of the dosing pump is connected to the bottom of the dosing bucket, the input end of the dosing concentration regulating valve is connected to the water outlet of the dosing pump, the output end of the dosing concentration regulating valve is connected to one end of the dosing pipe, and the other end of the dosing pipe is connected to the outlet pipe. By setting the dosing pump, the medicine in the dosing bucket can be added to the outlet pipe through the dosing pipe, thereby mixing with the water returning to the aquaculture pond; by adjusting the dosing concentration regulating valve with a scale, the dosing concentration can be adjusted within a range of 50 to 300 times, which can meet the requirements of using this ratio for different medicines.

[0018] Furthermore, a support seat and a cement base are provided below the purification tank. The cement base is cast and fixed to the pond base. The support seat includes an upper support seat and a lower support seat that are spliced ​​together. The top of the upper support seat is connected to the bottom of the purification tank, and the bottom of the lower support seat is connected to the cement base. The upper support seat and the lower support seat are rotatably connected, and a locking structure is provided between the upper support seat and the lower support seat. By casting to form a cement base and installing a support seat on the cement base to overhead and fix the purification tank, on the one hand, the purification tank can be given a certain height so that the circulating pumping water can be converted into gravitational potential energy. On the other hand, the support seat can also be used to install and fix the water-pushing flow-making aeration and oxygenation device, the dosing barrel and the control device. In addition, the support seat adopts a splicing installation method, so that the upper support seat can be assembled with the purification tank in advance, and the lower support seat is assembled with the cement base. Finally, the upper support seat and the lower support seat are locked and connected using a locking structure such as a bolt and nut assembly, which is convenient for construction. At the same time, the upper support seat and the lower support seat are rotatably connected. During installation and maintenance, the water-pushing flow-making aeration and oxygenation device can be rotated 90 degrees to the pond base. After installation and maintenance, it can be rotated 90 degrees in the opposite direction into the pond and locked and fixed. It is more convenient.

[0019] Furthermore, the support base is connected to an L-shaped first support frame for supporting the water outlet pipe. This first support frame is connected to inclined reinforcement ribs. This first support frame facilitates the extension of the water outlet pipe above the aquaculture pond. The welded reinforcement ribs enhance the strength of the first support frame, making it less susceptible to deformation and collapse.

[0020] Furthermore, the water inlet of the pumping pipe is connected to a farming escape prevention device. The farming escape prevention device comprises a hollow escape prevention cover and a second support frame fixedly connected to the escape prevention cover. The upper portion of the escape prevention cover is provided with a water inlet area, which is provided with a plurality of water inlet mesh holes connected to the inner cavity of the escape prevention cover. The side wall of the escape prevention cover is provided with a connecting pipe connected to the inner cavity of the escape prevention cover, and the connecting pipe is connected to the water inlet of the pumping pipe. By adding the farming escape prevention device, the escape of aquatic organisms can be prevented, and the silt below can be prevented from clogging the water inlet of the pumping pipe and affecting water pumping.

[0021] Furthermore, the pumping pipe is connected to a second check valve to prevent the water in the purification tank from flowing back into the breeding pond through the pumping pipe.

[0022] Furthermore, a drain pipe is provided at the bottom of the purification tank, and the drain pipe is connected to a second drain valve. When cleaning and maintenance are required, the second drain valve can be opened to drain the water inside the purification tank.

[0023] In a second aspect, the present invention further provides a method for using a multifunctional water-pushing and flow-generating pond circulating aquaculture system, comprising the following steps:

[0024] Start the circulating water pump, and the aquaculture water in the aquaculture pond is pumped from the pumping pipe through the water inlet into the purification tank;

[0025] The aquaculture water extracted and put into the purification tank circulates, the inserted nano-aeration device continuously aerates and oxygenates the aquaculture water in the purification tank, and the ozone adding device injects ozone into the aquaculture water in the purification tank for continuous ozone sterilization and disinfection.

[0026] The scum foam formed by aeration floats up and is discharged and collected through the foam discharge device on the top of the purification tank;

[0027] The aquaculture water that has been treated with aeration, oxygenation, foam separation and disinfection automatically flows out from the outlet on the side wall of the purification tank under the action of gravity. An appropriate amount of medicine is added to the outlet pipe through the timed automatic dosing device. Finally, the aquaculture water is sprayed upward at an angle through the water-pushing flow-making aeration and oxygenation device at the end of the outlet pipe and flows back into the aquaculture pond.

[0028] Compared with the prior art, the present invention provides a multifunctional water-pushing and flow-generating pond circulating aquaculture system and a method of use, which has the following beneficial effects:

[0029] The present invention can utilize a pumping pipe to continuously pump the water in the breeding pond to a purification tank at a high place for centralized aeration and oxygenation, foam separation, ozone disinfection, dosing and other treatments, and the treated circulating water can utilize the water level difference gravitational potential energy to realize kinetic energy conversion through a water-pushing flow-making aeration and oxygenation device, forming a water-pushing flow inclined upward at 45 degrees, thereby flowing back to the breeding pond again and realizing unpowered secondary air cutting and oxygenation. Since various water treatment equipment are integrated into the purification tank in an integrated manner through a reasonable layout, the overall spatial distribution size of the breeding system is reduced, and gravity can automatically push water to create aeration and oxygenation. A 1.5KW aerator can be reduced at the water spraying point, which greatly reduces the breeding cost. Pushing water to create flow can improve the oxygenation effect and the diffusion rate of the drug throwing.

[0030] This invention addresses the problems and pain points that arise in traditional pond aquaculture, changing the passive aquaculture situation of traditional pond static water aquaculture, relying on the weather for food, and relying solely on animal health products and drugs to solve the water quality problem. It focuses on solving the many problems caused by static water aquaculture that traditional pond aquaculture cannot solve, and adopts a water-pushing and flow-generating pond recirculating aquaculture model, providing new ideas and new models for large-water pond recirculating aquaculture. Specifically, the multifunctional water-pushing and flow-generating pond recirculating aquaculture system of the present invention has the following functions:

[0031] (1) Pond circulating water aquaculture function: It mainly solves the problem of traditional pond aquaculture that pollution is first treated first. In the face of conventional larger-scale aquaculture ponds (such as less than 10 mu), the circulating aquaculture water volume of one of the aquaculture systems of the present invention can reach 66m 3 / h, daily processing capacity can reach 1584m 3 / day, taking a 10-mu pond as an example, the aquaculture water can be circulated and treated once every 8 to 10 days. For a 6-month aquaculture, a total of 285,120 m3 of aquaculture water can be circulated and treated in each aquaculture process. 3 The aquaculture water can be recycled for more than 20 times for a 10-mu pond. In the face of larger-sized aquaculture ponds (such as more than 10 mu), the circulating aquaculture water volume of another specification of the aquaculture system of the present invention can reach 90m 3 / h, daily processing capacity can reach 2160m3 3 / day, taking a 15-mu pond as an example, the aquaculture water can be circulated and treated once every 8 to 10 days. For a 6-month aquaculture, a total of 388,800m3 of water can be circulated and treated in each aquaculture process. 3 The aquaculture water can be recycled for more than 19 times for a 15-mu pond. The present invention adopts a circulating water aquaculture model, and achieves twice the result with half the effort through active and comprehensive treatment at the source of the problem.

[0032] (2) Insertion type aeration and foam separation function: mainly solve the problem of increasing dissolved oxygen in aquaculture water and separating water-soluble organic matter in real time, reducing and slowing down the production of ammonia nitrogen and nitrite and the rate of pollution damage to aquaculture. The air volume of high-pressure blower entering the purification equipment reaches 20-25m per hour. 3 The above can control the dissolved oxygen in the aquaculture water to above 4-6 mg / L, and separate 100-150 kg / day of high-concentration water-soluble organic foam water. In each aquaculture process, 18,000-27,000 kg of high-concentration water-soluble organic foam water can be separated. After using aeration and foam to separate water-soluble organic matter, the amount of animal health products used in each aquaculture process can be reduced by more than 40%-50%. The saved drug costs can meet the electricity expenses of the system operation.

[0033] (3) Water flow aeration and oxygenation function: It mainly solves the problem of traditional pond static water fish farming. On the one hand, it uses 66m per hour 3 / h of circulating water output, the jet pushes the water flow movement, and the high-dissolved oxygen aquaculture water is continuously replenished, which improves the water quality of the pond aquaculture water and effectively solves the problem of uneven fish size and polarization in the aquaculture process; on the other hand, through the circulation of 66 cubic meters of water per hour, the aquaculture water in the jet push flow in the pond increases the movement of fish in the pond, improves the appetite of fish, increases the vitality of fish, improves the quality of fish, and solves the difficult problems of traditional pond static water aquaculture. In addition, since large fish gather in the feeding area to scramble for food during feeding, their oxygen consumption increases significantly, causing the dissolved oxygen in the feeding area to drop sharply to about 1.5-2 mg / L after the large fish have eaten. The ultra-low dissolved oxygen prevents small fish from entering the feeding area to feed. The present invention adopts water-pushing flow aeration and oxygenation technology, which continuously replenishes high-dissolved oxygen circulating water, solving the serious oxygen deficiency problem in the feeding area. The uniformity of fish in the breeding process is greatly improved, and the fish can be divided 1-2 times less in each breeding process, which not only reduces the breeding cost, but also reduces the stress and damage to the fish. The breeding cycle of each breeding can be shortened by about 30 days.

[0034] (4) Timed automatic dosing function: It mainly solves the problem that the traditional pond aquaculture process relies on manual spraying of animal health products and medicines. The present invention adopts a timed automatic dosing method to achieve automatic dosing, which is simple and convenient to operate. When dosing is required, the medicine is poured into the dosing bucket and diluted with water, and the required dosing concentration is adjusted. The dosing concentration regulating valve can achieve a concentration adjustment range of 50 to 300 times. In this way, the medicine is input into the outlet pipe through the dosing pump, and is sprayed into the aquaculture pond through the water-pushing flow-making aeration and oxygenation device to be evenly mixed with the aquaculture water to complete the automatic dosing work; the entire preparation process for automatic dosing takes about 10 minutes, which can reduce labor intensity and improve work efficiency by more than 10 times, and has the effect of uniform automatic dosing, which solves the problem of fish stress reaction or poisoning caused by uneven manual spraying.

[0035] (5) Ozone sterilization and disinfection function: It mainly solves the problem of excessive reliance on drugs in traditional pond aquaculture. The present invention adopts safe and environmentally friendly ozone disinfection technology, which has a promoting effect on promoting food safety and green and healthy aquaculture environment protection.

[0036] (6) Rotatable support seat: This mainly solves the problem of convenient installation and maintenance of the multifunctional water-pushing and flow-generating pond circulating aquaculture system. The support seat of the present invention has a rotatable function, so that installation and maintenance can be completed on the pond base. After the system is installed or repaired, it can be rotated 90 degrees to the normal working position and locked, which is convenient for operation and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 It is a structural schematic diagram of the present invention;

[0039] Figure 2 Schematic diagram of water flow;

[0040] Figure 3 Schematic diagram of the distribution of nano aeration tubes;

[0041] Figure 4 This is a schematic diagram of the installation of the cement base and support base;

[0042] Figure 5 This is a schematic diagram of using the first support frame to support the water outlet pipe and the water push flow pipe;

[0043] Figure 6 A schematic diagram of using a water-pushing flow-making pipe to eject water;

[0044] Figure 7 This is a schematic diagram of the installation of the anti-escape device and the water pumping pipeline for aquaculture;

[0045] Figure 8 This is a schematic diagram of the three-dimensional structure of the aquaculture escape prevention device;

[0046] Figure 9 Schematic diagram of the installation of the upper support base and the lower support base;

[0047] Figure 10 A schematic diagram of water spraying operation from a top-down perspective;

[0048] Figure 11 This is a 90-degree rotation diagram for installation and maintenance.

[0049] Reference numerals: 1, purification tank; 11, water inlet; 12, water outlet; 13, water circulation device; 131, circulation pipe; 132, circulation pump; 133, circulation outlet; 134, circulation inlet; 14, reinforced drain; 15, drain pipe; 16, second drain valve; 2, pumping pipe; 21, circulation pump; 22, aquaculture escape prevention device; 221, escape prevention cover; 2211, water inlet mesh; 2212, connecting pipe; 222, second support frame; 2221 , support rod; 23, second check valve; 3, plug-in nano-aeration device; 31, air pump; 32, air inlet pipe; 33, nano-aeration pipe; 4, foam discharge device; 41, collection cover; 411, conical section; 412, cylindrical section; 42, flow guide cover; 421, outlet section; 422, convergence section; 43, bubble discharge pipe; 44, foam collection barrel; 441, sealing cap; 5, water outlet pipe; 51, water-pushing flow-generating aeration and oxygenation device; 511, water-pushing flow-generating pipe; 512, water outlet hole; 52. Timed automatic dosing device; 521. Dosing tank; 522. Dosing concentration regulating valve; 523. Dosing pipeline; 524. Dosing pump; 525. Water supply pipe; 526. Dosing water supply valve; 527. First check valve; 528. First drain valve; 53. Liquid level regulating valve; 6. Ozone adding device; 61. Ozone generator; 62. Gas delivery pipeline; 63. Gas inlet; 7. Liquid level automatic balancing device; 71. First vertical pipe; 72. Second vertical pipe; 73. Guide pipe Flow pipe; 8. Control device; 9. Breeding pond; 90. Central rotating shaft 90; 91. Cement base; 92. Support seat; 921. Upper support seat; 922. Lower support seat; 923. Upper support column; 924. Lower support column; 925. Upper inner flange positioning plate; 926. Lower inner flange positioning plate; 927. Upper outer flange fixing plate; 928. Lower outer flange fixing plate; 929. Bolt and nut assembly; 93. First support frame; 931. Reinforcement rib; 94. Pond base. DETAILED DESCRIPTION

[0050] The technical solutions of the present invention are described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0051] The present invention will be further described in detail below through detailed embodiments in conjunction with the accompanying drawings.

[0052] This embodiment provides a multifunctional water-pushing and flow-generating pond circulating water aquaculture system, which adopts the water-pushing and flow-generating pond circulating water aquaculture mode, focusing on solving many problems caused by static water aquaculture that traditional pond aquaculture cannot solve, and provides a new idea and new model for large water body pond circulating water aquaculture. For details, please refer to Figures 1 to 11 The multifunctional water-pushing flow pond circulating water aquaculture system includes a purification tank 1 and a control device 8. The tank wall of the purification tank 1 is provided with a water inlet 11 and a water outlet 12. The water inlet 11 is connected to a pumping pipe 2 installed with a circulating water pump 21, and the water inlet end of the pumping pipe 2 extends into the aquaculture pond 9; the purification tank 1 is connected to an inserted nano aeration device 3, and the top of the purification tank 1 is provided with a foam discharge device 4; the water outlet 12 is connected to an outlet pipe 5, and the outlet pipe 5 is provided with a water-pushing flow aeration and oxygenation device 51 located above the aquaculture pond 9 at the end away from the purification tank 1, and the position height of the water-pushing flow aeration and oxygenation device 51 is lower than the position height of the purification tank 1; the control device 8 is respectively connected to the circulating water pump 21 and the inserted nano aeration device 3. In this way, the water in the breeding pond can be continuously pumped into the purification tank at a high place through the pumping pipe for centralized aeration and oxygenation, foam separation, ozone disinfection, and drug addition. The treated circulating water can use the gravitational potential energy of the water level difference to realize kinetic energy conversion through the water-pushing flow aeration and oxygenation device, forming an upward inclined water-pushing flow, which can then flow back into the breeding pond for use as breeding water and realize unpowered secondary air cutting and oxygenation. Since various water treatment equipment are integrated into the purification tank in an integrated manner through a reasonable layout, the overall spatial distribution size of the breeding system is reduced, and gravity can be used to automatically push water flow for aeration and oxygenation. A 1.5KW aerator can be reduced at the water spraying point, which greatly reduces the breeding cost. Pushing water flow can improve the oxygenation effect and the diffusion rate of the drug.

[0053] In some specific embodiments, reference Figure 1 、 Figure 5 and Figure 6 The water-pushing flow aeration and oxygenation device 51 includes a horizontally arranged water-pushing flow pipe 511. The middle portion of the water-pushing flow pipe 511 is connected to the outlet end of the outlet pipe 5. The wall of the water-pushing flow pipe 511 is provided with a plurality of water outlet holes 512 that spray water upward at an angle. Under the action of gravity, the water in the purification tank flows out through the outlet pipe and forms a water-pushing flow that sprays upward at an angle at the outlet holes. After falling into the aquaculture pond, the water-pushing flow brings in a large amount of air, thereby achieving the purpose of unpowered secondary automatic oxygenation, increasing the oxygenation coverage, and improving the oxygenation effect and the diffusion rate of the spraying agent.

[0054] Preferably, Figure 6 As shown, the angle between the central axis of the water outlet 512 and the horizontal plane is 45 degrees. In this way, the water flow can reach more than 2.5 meters, which can increase the ejection stroke of the water flow and make the water flow more divergent at the water entry point, thereby improving the oxygenation effect, increasing the oxygenation coverage, facilitating the diffusion of the drug and ensuring uniform mixing of the drug with the aquaculture water after entering the water, and reducing the harm to fish caused by excessive concentration due to uneven mixing.

[0055] refer to Figure 5 Preferably, the water outlet holes 512 are narrow, elongated through-holes, which increase the lateral width of the water flow and the area of ​​contact with air, thereby improving the oxygenation effect and the diffusion rate of the drug delivery. Specifically, as an example, the dimensions of the water outlet holes 512 are 150 mm long and 1.8 mm wide. The water flow pipe 511 is a hollow cylindrical tube, and there are ten water outlet holes 512 on the water flow pipe 511, which are symmetrically distributed on the pipe wall of the water flow pipe 511.

[0056] In some specific embodiments, reference Figures 1 to 3 The insertable nano-aeration device 3 includes an air pump 31, an air inlet pipe 32, and a plurality of parallel nano-aeration tubes 33. The air outlet of the air pump 31 is connected to one end of the air inlet pipe 32, and the other end of the air inlet pipe 32 is connected to one end of each nano-aeration tube 33. The other end of each nano-aeration tube 33 is inserted into the inner cavity of the purification tank 1. The nano-aeration tube 33 has an aeration port at one end located inside the purification tank 1. By starting the air pump, the water in the purification tank can be continuously aerated and oxygenated. The bubbles generated by aeration can reach the nanometer level, thereby effectively removing water-soluble organic matter in the water. Specifically, as Figure 3 As shown, nine nano-aeration tubes 33 are arranged in parallel, as an example. Each nano-aeration tube 33 has a plurality of circular aeration ports on its sidewall. It should be noted that in other embodiments, the number of nano-aeration tubes and aeration ports can be flexibly adjusted based on actual dimensions and specifications, and is not limited to the above number setting. The air inlet pipe 32 has an inverted U-shaped section to prevent water from flowing back into the purification tank 1 and into the air pump 31.

[0057] In some specific embodiments, reference Figure 1 and Figure 2 The foam discharge device 4 includes a collection hood 41 located at the top of the purification tank 1 and a flow guide hood 42 connected to the top of the collection hood 41. The flow guide hood 42 is connected to a bubble discharge pipe 43. The end of the bubble discharge pipe 43 away from the flow guide 42 is connected to a foam collection bucket 44. In this way, the scum foam formed by the aeration treatment can be collected by the collection hood after floating up, and finally drained by the flow guide hood into the bubble discharge pipe, and then collected in the foam collection bucket.

[0058] Specifically, such as Figure 2 As shown, the collection hood 41 comprises a conical section 411 at the bottom and a cylindrical section 412 at the top. The deflector 42 includes a discharge section 421 connected to the cylindrical section 412 and a converging section 422 located below the discharge section 421. The discharge section 421 has an outwardly sloping downwardly inclined discharge surface to facilitate the rapid discharge of scum and foam. The foam collection bucket 44 is provided with a lid 441 that can be opened to empty the foam inside.

[0059] In this embodiment, reference Figure 1 and Figure 2 , the purification tank 1 is connected to an ozone adding device 6. Specifically, the ozone adding device 6 includes an ozone generator 61, a gas delivery pipe 62 and a gas input port 63 provided on the tank wall of the purification tank 1. The two ends of the gas delivery pipe 62 are respectively connected to the ozone generator 61 and the gas input port 63. By starting the ozone generator, ozone can be continuously introduced into the aquaculture water in the purification tank to perform ozone sterilization and disinfection treatment, thereby improving the water quality. After ozone treatment, the ammonia nitrogen removal rate of the aquaculture water can reach more than 30% to 40%, and the nitrite removal rate can reach more than 50% to 60%. The gas delivery pipe has an inverted U-shaped section, which can prevent the aquaculture water inside the purification tank 1 from flowing back to the ozone generator.

[0060] As a preferred embodiment, the ozone generator 61 uses an oxygen source ozone integrated machine. The pure oxygen output port and the ozone output port of the oxygen source ozone integrated machine are respectively connected to the gas delivery pipe 62 via valves. In this way, the oxygen source ozone integrated machine can choose to introduce ozone or pure oxygen into the purification tank 1. When pure oxygen is introduced, the dissolved oxygen content of the aquaculture water can be increased, the aquaculture density can be increased, the production can be increased, and the economic benefits can be improved. When ozone is introduced, the addition of ozone can be used to sterilize and disinfect the aquaculture water, prevent the occurrence of diseases during the aquaculture process, improve the success rate of aquaculture, and achieve antibiotic-free healthy aquaculture.

[0061] refer to Figure 1 and Figure 2 In some embodiments, as an improvement, the purification tank 1 is connected to a water circulation device 13. Specifically, the water circulation device 13 includes a circulation pipe 131, a circulation water pump 132, and a circulation water outlet 133 and a circulation water inlet 134 provided on the tank wall of the purification tank 1. The circulation water pump 132 is connected in series to the circulation pipe 131, and the two ends of the circulation pipe 131 are respectively connected to the circulation water outlet 133 and the circulation water inlet 134. By starting the circulation water pump, the water in the purification tank can be pumped out and reflowed into the interior of the purification tank, thereby achieving a circulating flow of water in the purification tank, so as to promote and improve the effects of ozone disinfection and aeration oxygenation treatment.

[0062] Preferably, the circulating water inlet 134 is connected to a Venturi gas adding pipe in communication with the gas input port 63 , so that pure oxygen or ozone can be adsorbed and introduced into the purification tank 1 by utilizing the Venturi effect.

[0063] refer to Figure 1 and Figure 2In some embodiments, as an improvement, the purification tank 1 is connected to an automatic liquid level balancing device 7. Specifically, the automatic liquid level balancing device 7 includes a first vertical pipe 71 and a second vertical pipe 72, which are vertically and parallelly distributed. The upper ends of the first vertical pipe 71 and the upper ends of the second vertical pipe 72 are both open. A flow guide pipe 73 is connected between the first vertical pipe 71 and the second vertical pipe 72. The tank wall of the purification tank 1 is provided with a reinforced drain port 14. The lower end of the first vertical pipe 71 is connected to the reinforced drain port 14, and the lower end of the second vertical pipe 72 is connected to the outlet pipe 5. The height of the flow guide pipe 73 is higher than the height of the water outlet 12. During the daytime water circulation process, due to peak electricity consumption, the operating power of the circulating water pump is lower than that of normal use, resulting in slower pumping and a low water level in the purification tank, allowing the water in the purification tank to be discharged smoothly through the outlet. However, at night, when electricity consumption is low, the operating power of the circulating water pump increases compared to normal use, resulting in faster pumping and a corresponding increase in the water level in the purification tank. To prevent the water inside the purification tank from flowing upward into the deflector, an automatic liquid level balancing device is provided to speed up drainage. Specifically, the first vertical pipe 71, the second vertical pipe 72, and the diversion pipe 73 together form an H-shaped communicating vessel. Since the diversion pipe is located at a higher height than the outlet, when the water level inside the purification tank rises to a certain height, the water inside the purification tank can automatically flow through the reinforced drain port, through the first vertical pipe, the diversion pipe, and the second vertical pipe in sequence, and discharge into the outlet pipe. The diameter of the outlet can be set according to the size of the purification tank and the operating power of the circulating water pump. Preferably, the diameter of the reinforced drain port 14 is larger than that of the water outlet 12. This can enhance the rapid drainage effect and water level balancing capability of the automatic liquid level balancing device. Furthermore, a liquid level regulating valve 53 can be further installed at the water outlet 12. Manual adjustment of the liquid level regulating valve 53 can be used to adjust the operating water level within the purification tank 1.

[0064] In this embodiment, if Figure 1 and Figure 2As shown, the outlet pipe 5 is connected to a timed automatic dosing device 52. Specifically, the timed automatic dosing device 52 includes a dosing bucket 521, a dosing pump 524, a dosing concentration regulating valve 522, and a dosing pipe 523. The water inlet of the dosing pump 524 is connected to the bottom of the dosing bucket 521, the input end of the dosing concentration regulating valve 522 is connected to the water outlet of the dosing pump 524, the output end of the dosing concentration regulating valve 522 is connected to one end of the dosing pipe 523, and the other end of the dosing pipe 523 is connected to the outlet pipe 5. Through the setting of the dosing pump, the medicine in the dosing bucket can be added to the outlet pipe through the dosing pipe, thereby mixing with the water returning to the aquaculture pond; by adjusting the dosing concentration regulating valve with a scale, the dosing concentration can be adjusted within a range of 50 to 300 times, which can meet the requirements of using this ratio for different medicines. During non-dosing periods, the dosing tank is empty of liquid medicine. When temporary dosing is needed, liquid medicine is added to the tank to ensure that the medicine does not become ineffective or wasted. For example, the medicine stored in the dosing tank can be an anti-inflammatory agent or other agent for aquaculture. To prevent backflow of aquaculture water during dosing, the dosing pipe 523 is connected to a first check valve 527. Furthermore, the dosing tank 521 is connected to the bottom of the purification tank 1 via a water supply pipe 525 equipped with a dosing water supply valve 526, facilitating water addition and ratio adjustment. A first drain valve 528 is provided at the bottom of the dosing tank 521.

[0065] refer to Figures 1 to 4 、 Figures 9 to 11 In this embodiment, a support base 92 and a cement base 91 are provided below the purification tank 1. The cement base 91 is cast and fixed to the pond foundation. The support base 92 includes an upper support base 921 and a lower support base 922 that are spliced ​​together. The top of the upper support base 921 is connected to the bottom of the purification tank 1, and the bottom of the lower support base 922 is connected to the cement base 91. The upper support base 921 and the lower support base 922 are rotatably connected, and a locking structure is provided between the upper support base 921 and the lower support base 922. By casting the cement base and installing the support base on the cement base to overhead and fix the purification tank, on the one hand, the purification tank can be given a certain height to convert the circulating pumped water into gravitational potential energy. On the other hand, the support base can also be used to install and fix the water-pushing flow-generating aeration and oxygenation device, the dosing tank, and the control device. In addition, the support base is installed in a spliced ​​manner, allowing the upper support base to be assembled with the purification tank in advance, while the lower support base is assembled with the concrete base. Finally, the upper and lower support bases can be locked together using locking structures such as bolt and nut assemblies, thus facilitating construction. At the same time, the upper support base 921 and the lower support base 922 are rotatably connected. During installation and maintenance, the water-pushing flow-generating aeration and oxygenation device can be rotated 90 degrees to the pond base. After installation and maintenance are completed, it can be rotated 90 degrees in the opposite direction and locked into the pond, which is quite convenient.

[0066] Specifically, refer to Figure 4 and Figure 9 The upper support seat 921 and the lower support seat 922 are both steel structural components. The upper support seat 921 has an upper support column 923 facing vertically downward, and the lower support seat 922 has a lower support column 924 facing vertically upward. The upper support column 923 and the lower support column 924 are rotatably connected via a central rotating shaft 90. Two lower inner flange positioning plates 926 are fixed to the upper portion of the lower support column 924, and the lower portion of the central rotating shaft 90 is fixedly connected to the lower support column 924 via the two lower inner flange positioning plates 926. Two upper inner flange positioning plates 925 are fixed to the lower portion of the upper support column 923. Both upper inner flange positioning plates 925 have mounting holes that plug into the upper portion of the central rotating shaft 90. The upper portion of the central rotating shaft 90 is rotatably connected to the upper support column 923 via the two upper inner flange positioning plates 925. The locking structure includes an upper outer flange fixing plate 927 fixedly connected to the lower part of the upper support column 923, a lower outer flange fixing plate 928 fixedly connected to the upper part of the lower support column 924, and a plurality of bolt and nut assemblies 929 connected between the upper outer flange fixing plate 927 and the lower outer flange fixing plate 928. The upper support column 923, the lower support column 924 and the central shaft 90 form a rotatable steel structure frame column, such as Figure 10 As shown in the figure, during normal operation, the bolt and nut assembly can be connected and locked. During installation or maintenance, Figure 11 As shown, the bolt and nut assembly 929 can be loosened, and the upper support column 923 can be pushed and rotated 90°, so that the various components such as the water-pushing flow-making aeration and oxygenation device fixed on the upper support seat 921 can be rotated to the pond base, thereby facilitating equipment installation and maintenance. After the system is assembled and debugged, it can be rotated another 90° to extend the water-pushing flow-making aeration and oxygenation device to the working position above the culture pond, and then it can enter normal working state.

[0067] refer to Figure 1 and Figure 5 In some embodiments, the support base 92 is connected to an L-shaped first support frame 93 for supporting the water outlet pipe 5. The first support frame 93 is connected to an inclined reinforcement rib 931. The horizontal section of the first support frame 93 extends above the aquaculture pond. This first support frame facilitates the extension of the water outlet pipe above the aquaculture pond. The welded reinforcement ribs enhance the strength of the first support frame, making it less susceptible to deformation and collapse.

[0068] In this embodiment, the control device 8 can be a PLC controller with programming function. Figure 1 As shown, the control device 8 is fixed on the support base 92 through an electrical box and is located below the purification tank 1 to avoid sun and rain.

[0069] refer to Figure 1 、 Figure 7 and Figure 8 In some embodiments, as an improvement, the water inlet of the pumping pipe 2 is connected to an aquaculture escape prevention device 22. The aquaculture escape prevention device 22 comprises an escape prevention cover 221 with a hollow cover structure and a second support frame 222 fixedly connected to the escape prevention cover 221. The upper portion of the escape prevention cover 221 is provided with a water inlet area, which is provided with a plurality of water inlet mesh holes 2211 that communicate with the inner cavity of the escape prevention cover 221. The sidewall of the escape prevention cover 221 is provided with a connecting pipe 2212 that communicates with the inner cavity of the escape prevention cover and is connected to the water inlet of the pumping pipe 2. The installation of the aquaculture escape prevention device can prevent aquatic organisms from escaping and prevent silt from clogging the water inlet of the pumping pipe, thereby affecting water pumping.

[0070] like Figure 7 and Figure 8 As shown, specifically, the anti-escape cover 221 is cylindrical, the central axis of the anti-escape cover 221 is horizontally distributed, and the water inlet area is located on the upper part of the circumferential side wall of the anti-escape cover. The water inlet meshes 2211 are distributed in multiple rows, and the water inlet meshes 2211 in two adjacent rows are staggered, which can better prevent the passage of farmed aquatic organisms and have a better anti-clogging effect. Among them, the water inlet mesh 2211 is a long strip-shaped through hole. Compared with the circular through hole, it has more water inlet space and is less likely to be blocked by aquatic organisms such as snails or other debris. Preferably, the width of the water inlet mesh is 2 to 4 mm, and the length of the water inlet mesh is 50 to 80 mm. In this way, it can better achieve both anti-escape effect and higher pumping efficiency. As an example, the width of the water inlet mesh can be set to 3 mm and the length can be set to 60 mm.

[0071] In some specific embodiments, such as Figure 8 As shown, two second support frames 222 are provided, and both second support frames 222 are in an inverted V shape and are respectively located at the two ends of the anti-escape cover 221. The second support frame 222 is formed by splicing two symmetrically inclined support rods 2221, and the outer walls of the support rods 2221 are fixedly connected to the outer walls of the anti-escape cover 221. In this way, the bottom of the support rods can be used to penetrate the mud at the bottom of the pool, which can more firmly support the anti-escape cover. As an example, the anti-escape cover 221 can be made of stainless steel sheet, and the connecting pipe 2212 and the support rods 2221 can be made of stainless steel pipes. In this way, each metal component can be processed and formed by welding, which is convenient for production.

[0072] In some embodiments, as Figure 1 As shown, the pumping pipe 2 is connected to a second check valve 23 to prevent the water in the purification tank from flowing back into the breeding pond through the pumping pipe.

[0073] In some embodiments, as Figure 1 and Figure 2As shown, a drain pipe 15 is provided at the bottom of the purification tank 1, and the drain pipe 15 is connected to a second drain valve 16. When cleaning and maintenance are required, the water inside the purification tank can be emptied by opening the second drain valve.

[0074] refer to Figures 1 to 11 The method of using the multifunctional water-pushing and flow-generating pond circulating aquaculture system of the present invention is as follows:

[0075] Start the circulating water pump 21, and the aquaculture water in the aquaculture pond 9 is extracted from the pumping pipe 2 through the water inlet 11 at the aquaculture escape prevention device and enters the purification tank 1;

[0076] The water circulation device 13 continuously circulates and pumps the aquaculture water extracted into the purification tank 1 to promote the circulation of the aquaculture water in the purification tank 1. The inserted nano-aeration device 3 continuously aerates and oxygenates the aquaculture water in the purification tank 1 and removes impurities in the water. The ozone addition device 6 injects ozone into the aquaculture water in the purification tank 1 for continuous ozone sterilization and disinfection.

[0077] The scum foam formed by aeration floats up and is discharged through the collection cover 41 and the guide cover 42 on the top of the purification tank 1, and then flows into the foam collection bucket 44 for collection;

[0078] The aquaculture water after aeration, oxygenation, foam separation and disinfection automatically flows out from the water outlet 12 on the side wall of the purification tank 1 under the action of water level difference gravity and enters the outlet pipe 5. An appropriate amount of medicine can be added to the outlet pipe 5 through the timed automatic dosing device 52. Finally, the aquaculture water is sprayed upward at a 45-degree angle from the outlet hole 512 on the water-pushing flow-making pipe 511 at the end of the outlet pipe 5 and flows back into the aquaculture pond, so as to achieve water-pushing oxygenation and improve the diffusion rate of the drug.

[0079] Furthermore, at night, when usage is low, the circulating water pump 21's operating power increases compared to normal use, resulting in faster pumping and a corresponding increase in the water level within the purification tank 1. Due to the provision of an automatic liquid level balancing device 7, once the water level within the purification tank 1 rises to the level of the diversion pipe 73, the communicating vessel effect allows the water within the purification tank 1 to automatically flow through the reinforced drain outlet 14, sequentially through the first riser pipe 71, diversion pipe 73, and second riser pipe 72, into the outlet pipe 5, thereby accelerating drainage and balancing the water level, ensuring stable operation.

[0080] The multifunctional water-pushing and flow-generating pond circulating water aquaculture system of the present invention can effectively carry out circulation purification, disinfection, drug addition and other multi-faceted treatments on aquaculture water bodies, and is suitable for treating aquaculture water bodies for fish, shrimp, snails and the like.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0082] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A multifunctional water-pushing and flow-generating pond circulating water aquaculture system, comprising a purification tank and a control device, characterized in that: The tank wall of the purification tank is provided with a water inlet and a water outlet, the water inlet is connected to a pumping pipe installed with a circulating water pump, and the water inlet end of the pumping pipe extends into the breeding pond; the purification tank is connected to an inserted nano aeration device, and a foam discharge device is provided on the top of the purification tank; the water outlet is connected to an outlet pipe, and the outlet pipe is provided with a water-pushing flow-generating aeration and oxygenation device located above the breeding pond at one end away from the purification tank, and the position height of the water-pushing flow-generating aeration and oxygenation device is lower than the position height of the purification tank; the control device is respectively connected to the circulating water pump and the inserted nano aeration device; The water-pushing flow-generating aeration and oxygenation device comprises a horizontally distributed water-pushing flow-generating pipe, the middle portion of which is connected to the water outlet end of the water outlet pipe, and the pipe wall of the water-pushing flow-generating pipe is provided with a plurality of water outlet holes that spray water obliquely upward; The treated circulating water utilizes the gravitational potential energy of the water level difference to form an upward inclined water pushing flow through the water pushing flow aeration and oxygenation device, and flows back to the culture pond; The purification tank is connected to an automatic liquid level balancing device, which includes a first vertical pipe and a second vertical pipe distributed vertically and parallel to each other. The upper ends of the first vertical pipe and the second vertical pipe are both open. A guide pipe is connected between the first vertical pipe and the second vertical pipe. The tank wall of the purification tank is provided with an enhanced drain port. The lower end of the first vertical pipe is connected to the enhanced drain port, and the lower end of the second vertical pipe is connected to the outlet pipe. The position height of the guide pipe is higher than the position height of the outlet. The first vertical pipe, the second vertical pipe and the guide pipe together constitute an H-shaped communicating vessel. When the water level inside the purification tank rises to a certain height, the water inside the purification tank can also automatically flow through the enhanced drain port, the first vertical pipe, the guide pipe and the second vertical pipe in sequence, and be discharged into the outlet pipe.

2. The multifunctional water-pushing and flow-generating pond circulating aquaculture system according to claim 1 is characterized in that: The insertable nano-aeration device includes an air pump, an air inlet pipe, and several parallel nano-aeration tubes. The air outlet end of the air pump is connected to one end of the air inlet pipe, and the other end of the air inlet pipe is respectively connected to one end of each nano-aeration tube. The other end of each nano-aeration tube is inserted into the inner cavity of the purification tank. The nano-aeration tube has an aeration port at one end located inside the purification tank.

3. The multifunctional water-pushing and flow-generating pond circulating aquaculture system according to claim 2 is characterized in that: The foam discharge device includes a collection cover located on the top of the purification tank and a flow guide cover connected to the top of the collection cover. The flow guide cover is connected to a bubble discharge pipe, and the bubble discharge pipe is connected to a foam collection barrel at one end away from the flow guide cover.

4. The multifunctional water-pushing and flow-generating pond circulating aquaculture system according to claim 3 is characterized in that: The purification tank is connected to an ozone adding device, which includes an ozone generator, a gas delivery pipeline and a gas input port arranged on the tank wall of the purification tank, and the two ends of the gas delivery pipeline are respectively connected to the ozone generator and the gas input port; or, the purification tank is connected to an ozone adding device, which includes an oxygen source ozone integrated machine, a gas delivery pipeline and a gas input port arranged on the tank wall of the purification tank, the pure oxygen output end and the ozone output end of the oxygen source ozone integrated machine are respectively connected to one end of the gas delivery pipeline through a valve, and the other end of the gas delivery pipeline is connected to the gas input port.

5. The multifunctional water-pushing and flow-generating pond circulating aquaculture system according to claim 4 is characterized in that: The purification tank is connected to a water circulation device, which includes a circulation pipe, a circulation water pump, and a circulation water outlet and a circulation water inlet arranged on the tank wall of the purification tank. The circulation water pump is connected in series to the circulation pipe, and the two ends of the circulation pipe are respectively connected to the circulation water outlet and the circulation water inlet.

6. The multifunctional water-pushing and flow-generating pond circulating aquaculture system according to claim 5 is characterized in that: The water outlet pipe is connected to a timed automatic dosing device, which includes a dosing barrel, a dosing pump, a dosing concentration regulating valve and a dosing pipe. The water inlet of the dosing pump is connected to the bottom of the dosing barrel, the input end of the dosing concentration regulating valve is connected to the water outlet of the dosing pump, the output end of the dosing concentration regulating valve is connected to one end of the dosing pipe, and the other end of the dosing pipe is connected to the water outlet pipe.

7. The multifunctional water-pushing and flow-generating pond circulating aquaculture system according to claim 6 is characterized in that: A support seat and a cement base are provided under the purification tank, and the cement base is cast and fixed on the pond base. The support seat includes an upper support seat and a lower support seat that are spliced ​​together. The top of the upper support seat is connected to the bottom of the purification tank, and the bottom of the lower support seat is connected to the cement base. The upper support seat and the lower support seat are rotatably connected, and a locking structure is provided between the upper support seat and the lower support seat.

8. A method for using the multifunctional water-pushing and flow-generating pond circulating aquaculture system according to any one of claims 6 to 7, characterized in that: The following steps are involved: Start the circulating water pump, and the aquaculture water in the aquaculture pond is pumped from the pumping pipe through the water inlet into the purification tank; The aquaculture water extracted and put into the purification tank circulates, the inserted nano-aeration device continuously aerates and oxygenates the aquaculture water in the purification tank, and the ozone adding device injects ozone into the aquaculture water in the purification tank for continuous ozone sterilization and disinfection. The scum foam formed by aeration floats up and is discharged and collected through the foam discharge device on the top of the purification tank; The aquaculture water that has been treated with aeration, oxygenation, foam separation and disinfection automatically flows out from the outlet on the side wall of the purification tank under the action of gravity. An appropriate amount of medicine is added to the outlet pipe through the timed automatic dosing device. Finally, the aquaculture water is sprayed upward at an angle through the water-pushing flow-making aeration and oxygenation device at the end of the outlet pipe and flows back into the aquaculture pond.

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