Aquaculture water circulation all-in-one machine

Abstract

The application discloses an integrated machine for circulating aquaculture water, which comprises a machine shell, a water inlet bin and a disinfection bin formed by partitioning in the machine shell, and the machine shell is provided with a circulating water inlet, a circulating water outlet and a water supplement inlet, the circulating water inlet and the water supplement inlet are directly communicated with the water inlet bin, the circulating water inlet and the circulating water outlet are respectively communicated with a breeding pond, and the water inlet bin is arranged at a water level lower than the running water level of the breeding pond; the water supplement inlet is connected with a water supply pipe and is provided with a switch valve, the water inlet bin is communicated with the disinfection bin through a flow guide channel, the flow guide channel is provided with a water body filtering unit, the disinfection bin is provided with a disinfection device and a water body oxygenation unit, and the water body oxygenation unit is provided with a water inlet channel communicated with the disinfection bin and a water outlet channel communicated with the circulating water outlet. The integrated machine realizes self-flow water diversion by means of water level difference, reduces operation energy consumption, and avoids water quality fluctuation by making new water enter the breeding pond after treatment. The integrated machine integrates the functions of self-flow water diversion, filtration, sterilization, oxygenation and water supplement, has compact structure and small occupation area, and is suitable for intensive small-scale industrial aquaculture.

Description

Technical Field

[0001] This invention relates to the technical field of aquaculture, and particularly to an integrated aquaculture water circulation machine. Background Technology

[0002] Existing recirculating aquaculture systems (RAS) in industrialized aquaculture are mostly modular and separate, with functional units such as filtration, sterilization, dissolved oxygenation, and water monitoring installed independently. This results in a loose overall equipment layout and complex piping, occupying significant space in the aquaculture area and making equipment installation, commissioning, and daily maintenance difficult, thus hindering their adaptation to intensive, small-scale aquaculture scenarios. Furthermore, traditional RAS systems generally rely on multi-stage pumps for forced water circulation, leading to high overall energy consumption and failing to meet the requirements of energy-efficient aquaculture development.

[0003] In addition, the water replenishment design of existing aquaculture water circulation systems has obvious defects. The common method of replenishing water is to directly inject new water into the aquaculture pond. The direct injection of untreated new water into the pond can easily cause fluctuations in water quality, imbalance of aquatic flora, and affect the survival rate of aquaculture. Summary of the Invention

[0004] This invention aims to solve the technical problems existing in the above-mentioned related technologies, and proposes an integrated water circulation machine for aquaculture, which can reduce the cost of aquaculture and improve the survival rate of aquaculture.

[0005] According to a first aspect of the present invention, an integrated aquaculture water circulation machine includes: The casing is internally divided into a water inlet chamber and a disinfection chamber. The casing has a circulating water inlet, a circulating water outlet, and a water replenishment inlet. Both the circulating water inlet and the water replenishment inlet are directly connected to the water inlet chamber. Both the circulating water inlet and the circulating water outlet are connected to the aquaculture pond. The water level in the water inlet chamber is lower than the operating water level of the aquaculture pond, creating a high-low water level difference structure, allowing the water in the aquaculture pond to flow into the water inlet chamber without power. The water inlet chamber has a guide channel connecting to the disinfection chamber, and a disinfection device is installed inside the disinfection chamber. A water filtration unit is installed at the flow channel, and the water filtration unit is used to filter the water flowing into the disinfection chamber from the flow channel. A water oxygenation unit is provided in the disinfection chamber. The water oxygenation unit is provided with an inlet channel that connects to the disinfection chamber and an outlet channel that connects to the circulating water outlet. The water inlet is connected to a water supply pipe equipped with a switch valve. Fresh water enters the water inlet chamber from the water inlet, and after filtration, disinfection, and dissolved oxygen treatment, it is guided to the aquaculture pond through the circulation outlet, forming a fresh water pretreatment and replenishment path.

[0006] The integrated aquaculture water circulation machine according to embodiments of the present invention has at least the following beneficial effects: It utilizes the difference in water level between the inlet tank and the aquaculture pond to form a self-flowing water intake structure without the need for multi-stage pumps to forcibly transport water from the aquaculture pond into the equipment, effectively reducing the overall energy consumption of the water circulation system, lowering aquaculture costs, and aligning with the industry's development direction of energy-saving aquaculture; simultaneously, fresh external water introduced through the water inlet first flows into the inlet tank, sequentially passes through a water filtration unit to filter impurities, a disinfection device to sterilize, and a water aeration unit to oxygenate before being diverted. This system replaces the traditional method of directly adding untreated fresh water to the aquaculture ponds, avoiding water quality fluctuations and microbial imbalances caused by direct water introduction. It stabilizes the aquatic environment and improves the survival rate of aquatic animals. The entire system integrates gravity-flow water intake, impurity filtration, water disinfection, water aeration, and fresh water pretreatment and replenishment functions. It has a high degree of automation and integration, which can significantly reduce the space occupied by the equipment, simplify pipeline layout, and reduce the difficulty of equipment installation, commissioning, and daily operation and maintenance. It is very suitable for the needs of intensive and small-scale aquaculture.

[0007] According to some embodiments of the present invention, the integrated aquaculture water circulation machine further includes a water quality monitoring system, which is used to monitor the concentrations of ammonia nitrogen, nitrite, and dissolved oxygen in the aquaculture pond.

[0008] According to some embodiments of the present invention, the bottom of the water inlet chamber or the disinfection chamber is provided with a drainage device. When the ammonia nitrogen concentration or nitrite concentration of the aquaculture pond is higher than a preset threshold, the switch valve is opened and the drainage device starts to drain water.

[0009] According to some embodiments of the present invention, the water filtration unit includes a filter cartridge, the filter cartridge having a filter inlet covering the flow channel, and the outer wall of the filter cartridge being covered with a screen.

[0010] According to some embodiments of the present invention, the water filtration unit further includes a rotary power source and a rotary mechanism, wherein the rotary mechanism drives the filter cartridge to rotate within the disinfection chamber under the drive of the rotary power source.

[0011] According to some embodiments of the present invention, the water filtration unit further includes a drain trough and a plurality of spray heads. The plurality of spray heads are fixedly disposed on the outer side of the filter cartridge and are spaced apart along the axial length of the filter cartridge. The drain trough is fixedly disposed on the inner side of the filter cartridge and is directly opposite the plurality of spray heads. The housing is provided with a drain port communicating with the drain trough.

[0012] According to some embodiments of the present invention, the disinfection chamber is provided with a first liquid level gauge, which is electrically connected to the spray head.

[0013] According to some embodiments of the present invention, the water oxygenation unit includes a conical shell and a booster pump. The top and bottom of the conical shell are respectively provided with the water inlet channel and the water outlet channel. The water inlet of the booster pump is connected to the disinfection chamber, and the water outlet of the booster pump is connected to the water inlet channel to pressurize and supply water into the conical shell. The water in the conical shell flows back to the aquaculture pond from the water outlet channel through the circulation outlet channel based on the pipeline pressure provided by the booster pump.

[0014] According to some embodiments of the present invention, an oxygen supply pipe is connected to the outside of the water inlet channel, and a water-oxygen mixer connected to the water inlet channel is provided inside the conical shell.

[0015] According to some embodiments of the present invention, the disinfection device includes at least one of an ultraviolet germicidal lamp or an ozone generator.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a front view of the integrated aquaculture water circulation machine provided in an embodiment of the present invention; Figure 2 This is a side view of the integrated aquaculture water circulation machine provided in an embodiment of the present invention.

[0018] In the attached diagram: 100-casing, 101-water inlet, 102-disinfection chamber, 110-circulating water inlet, 120-circulating water outlet, 130-water replenishment port, 200-water filtration unit, 300-water oxygenation unit, 340-water inlet channel, 350-water outlet channel, 103-drainage device, 400-controller, 210-filter cartridge, 220-rotating power source, 230-rotating mechanism, 240-sewage discharge trough, 250-spray head, 231-rotating roller, 211-screen, 232-ring rack, 221-drive shaft, 233-drive gear, 140-sewage outlet, 251-self-priming cleaning water pump, 260-first level gauge, 310-conical shell, 320-boosting water pump, 330-second level gauge. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] like Figure 1 As shown in the figure, this embodiment of the invention provides an integrated aquaculture water circulation machine. The entire machine uses an integrated casing 100 as its supporting foundation. The interior of the casing 100 is divided into an inlet chamber 101 and a disinfection chamber 102 by a partition. The casing 100 has a circulation inlet 110, a circulation outlet 120, and a water replenishment inlet 130 on its wall. Both the circulation inlet 110 and the water replenishment inlet 130 are directly connected to the internal space of the inlet chamber 101. The circulation inlet 110 and the circulation outlet 120 are respectively connected to an external aquaculture pond (not shown in the figure) through pipelines. During the installation and layout of the entire machine, the overall water level of the inlet chamber 101 is lower than the normal operating water level of the aquaculture pond, forming a fixed high and low water level difference structure. The water inside the aquaculture pond can continuously flow into the inlet chamber 101 from the circulation inlet 110 without the need for an additional water pump due to its own liquid level difference.

[0024] Specifically, the wall of the water inlet chamber 101 has a guide channel, which serves as the only water passage connecting the water inlet chamber 101 to the disinfection chamber 102. A water filtration unit 200 is fixedly installed at the guide channel, and all water flowing from the water inlet chamber 101 to the disinfection chamber 102 is forced to pass through the water filtration unit 200 to intercept solid impurities. The internal space of the disinfection chamber 102 is equipped with a disinfection device (not shown in the attached diagram) and a water aeration unit 300. The water aeration unit 300 is provided with an inlet channel 340 and an outlet channel 350. The inlet channel 340 connects to the internal water space of the disinfection chamber 102 and is used to pump water from the disinfection chamber 102. The outlet channel 350 is directly connected to the circulation outlet 120 of the casing 100. The oxygen-enriched water after dissolved oxygen treatment can flow directly back to the aquaculture pond along the outlet channel 350.

[0025] In addition, the outer pipe of the water inlet 130 is connected to the water supply pipe consisting of the external municipal water supply or the backup water tank. The water supply pipe is equipped with an electrically controllable switch valve. External fresh water can be controlled by the switch valve to enter the water inlet chamber 101 as needed. All fresh water entering through the water inlet 130 will not be directly discharged into the aquaculture pond. Instead, it will follow the circulating water to complete the filtration, disinfection and dissolved oxygen treatment in sequence, and then be guided to the aquaculture pond through the circulating water outlet 120, forming a complete closed-loop fresh water pretreatment and replenishment path, which avoids water quality fluctuation problems caused by untreated fresh water directly entering the aquaculture pond from the source.

[0026] The inlet tank 101 serves as the basic tank for temporary storage, initial collection, and pre-storage of water for the entire system. It receives two water sources: one is the circulating return water flowing from the aquaculture pond by gravity, and the other is the supplementary fresh water supplied by an external water supply pipeline. Both types of water undergo initial collection and temporary storage within the inlet tank 101 before flowing through a guide channel to the disinfection tank 102. A drainage device 103 is installed at the bottom of the inlet tank 101. This device can be controlled by an electrically controlled valve. When the ammonia nitrogen or nitrite concentration inside the aquaculture pond exceeds the system's preset safety threshold, the controller 400 simultaneously opens the switch valve of the water inlet 130 and the drainage device 103 at the bottom of the inlet tank 101, directly discharging the unfiltered and undisinfected highly polluted water from the inlet tank 101 to reduce the concentration of harmful substances in the aquaculture pond. Understandably, the drainage device 103 at the bottom of the water inlet 101 can also be manually opened to drain all the water in the hopper during equipment shutdown maintenance and hopper cleaning.

[0027] The inlet tank 101 contains no additional water-transporting power components; the entire water flow is achieved by gravity transport based on the difference in water level between the aquaculture pond and the inlet tank 101. This eliminates the need for multi-stage water pumps, significantly reducing the energy consumption of the entire machine during continuous operation and aligning with the industry's requirements for energy-efficient, factory-style aquaculture. In practical use, one aquaculture water circulation system is paired with one aquaculture pond. The pond is an independent structure with adjustable placement. Due to the small space required, simple piping layout, and low manufacturing cost of the aquaculture water circulation system, a one-to-one pairing is feasible. When the aquaculture pond needs to be moved, the aquaculture water circulation system can also move with it, which is beneficial for diversified aquaculture development.

[0028] In addition, the whole machine is equipped with a water quality monitoring system, which includes multiple sets of water quality sensors. Each set of water quality sensors is arranged inside the aquaculture pond. In addition to the conventional monitoring of ammonia nitrogen, nitrite and dissolved oxygen concentrations in the aquaculture pond, it can also simultaneously monitor key water quality parameters such as water depth, water pH value, water temperature and water turbidity in real time. All monitoring data are transmitted to the built-in controller 400 of the whole machine in real time to complete data comparison and logical judgment. The controller 400 has two built-in liquid level control logics. The first logic is for water replacement scenarios where water quality exceeds standards. When the monitored values ​​of ammonia nitrogen and nitrite exceed the system's preset safety threshold, the controller 400 simultaneously opens the switch valve of the water inlet 130 and the drainage device 103 of the water inlet chamber 101. This quickly dilutes harmful substances in the aquaculture pond water by draining water while simultaneously replenishing it with fresh water. The second logic is for water replenishment scenarios involving natural evaporation. The aquaculture pond is equipped with a liquid level sensor. When the water level in the aquaculture pond falls below the system's preset threshold due to long-term evaporation, the controller 400 opens the switch valve of the water inlet 130 separately. Fresh water from outside continuously flows into the water inlet chamber 101. After undergoing a complete pretreatment process of filtration, disinfection, and dissolved oxygenation, the water is replenished to the aquaculture pond, maintaining a constant water level and preventing the water level from being too low and affecting the normal survival activities of aquatic organisms.

[0029] like Figure 1 and Figure 2 As shown, the water filtration unit 200 is fully assembled inside the disinfection chamber 102. It includes a filter cartridge 210, a rotary power source 220, a rotating mechanism 230, a sewage discharge tank 240, and multiple spray heads 250. The filter cartridge 210 is rotatably connected to the disinfection chamber 102 via two sets of rotating rollers 231. One end of the filter cartridge 210 has a filter inlet that completely covers the flow channel, ensuring that all water flowing out of the inlet chamber 101 enters the inner cavity of the filter cartridge 210 through the filter inlet. The outer wall of the filter cartridge 210 is completely covered with a 200-mesh screen 211. When water penetrates the screen 211 from inside the filter cartridge 210 into the disinfection chamber 102, solid impurities such as fish feces, uneaten food, and suspended organic debris carried inside the water are completely intercepted and retained in the inner cavity of the filter cartridge 210, completing physical solid-liquid separation and purification.

[0030] To drive the filter cartridge 210 to rotate, a ring-shaped rack 232 is machined on the outer circumference of the filter cartridge 210. The rotational power source 220 can be a rotary motor, which is fixedly installed outside the housing 100 to prevent leakage caused by long-term immersion in water. The output end of the rotary motor is connected to a drive shaft 221, which extends into the housing 100 and is equipped with a drive gear 233. The drive gear 233 meshes with the ring-shaped rack 232 on the outer circumference of the filter cartridge 210 to form a gear and rack rotation mechanism. During operation, after receiving a signal from the controller 400, the rotary motor drives the drive shaft 221 and the drive gear 233 to rotate synchronously. The drive gear 233 meshes with and drives the ring-shaped rack 232 to drive the entire filter cartridge 210 to rotate at a constant speed along its central axis.

[0031] To achieve backwashing, multiple spray heads 250 are uniformly and fixedly arranged on the outer circumferential position of the filter cartridge 210. All spray heads 250 are evenly spaced along the axial length of the filter cartridge 210, with the multiple spray heads 250 located directly above the filter cartridge 210. The water supply pipes of the spray heads 250 are connected to a self-priming cleaning water pump 251, and the water intake of the self-priming cleaning water pump 251 is connected to the water inside the disinfection chamber 102. When the equipment performs backwashing, the self-priming cleaning water pump 251 draws the filtered water from the disinfection chamber 102 and pressurizes it to deliver it to each spray head 250. The spray heads 250 spray high-pressure water towards the screen 211 on the outer wall of the filter cartridge 210, washing away the solid dirt adhering to the inner surface of the screen 211. Correspondingly, the sewage discharge trough 240 is fixedly arranged inside the filter cartridge 210. The installation position of the sewage discharge trough 240 is directly opposite the spray area of ​​all the spray heads 250. The dirt washed off by the water flow falls directly into the sewage discharge trough 240 under the action of gravity. The housing 100 is provided with a sewage discharge port 140 that connects to the sewage discharge trough 240. The sewage discharge trough 240 is inclined downward towards the sewage discharge port 140, so that the mixed sewage collected inside the sewage discharge trough 240 can be discharged outward through the sewage discharge port 140, realizing automatic discharge of dirt without the need for manual cleaning of the dirt accumulated in the filter cartridge 210.

[0032] It should be noted that the continuous rotation of the filter cartridge 210 has multiple technical advantages: on the one hand, the relative position of the screen 211 and the spray head 250 can be continuously changed during the rotation of the filter cartridge 210, ensuring that the entire outer circumference of the screen 211 can be sprayed and rinsed, and there are no dead corners for cleaning; on the other hand, the rotating filter cartridge 210 can make the water fully contact the screen 211, avoid the accumulation of dirt in local positions, and extend the continuous service life of the screen 211.

[0033] On the other side, the disinfection chamber 102 receives water flowing from the inlet chamber 101 through a guide channel, after impurities have been intercepted by the filtration unit. A disinfection device is fixedly installed inside the disinfection chamber 102. This device can be either a single ultraviolet germicidal lamp or an ozone generator, or the two can be used in combination. When used in combination, the ultraviolet germicidal lamp remains constantly lit, continuously disinfecting the water in the disinfection chamber 102 with a broad spectrum of light. The ozone generator is set with intermittent start-stop control logic. The controller 400 intermittently activates the ozone generator based on the water quality values ​​monitored by the water quality monitoring system to deeply oxidize and decompose trace amounts of toxic substances in the water. This dual disinfection approach significantly improves the water purification effect, effectively killing pathogens, parasite eggs, and organic pollutants in the water, and preventing the long-term circulation and growth of harmful microorganisms in the aquaculture water.

[0034] Next, a first level gauge 260 is fixedly installed inside the disinfection chamber 102. The first level gauge 260 can be a continuous level detection structure. The first level gauge 260 extends outward from the housing 100, allowing the operator to directly observe the level of the liquid inside the disinfection chamber 102. The first level gauge 260 is electrically connected to the controller 400, which controls the working state of the spray head 250, via a signal line. The first level gauge 260 collects the real-time liquid level value inside the disinfection chamber 102 and continuously feeds it back to the controller 400. When the screen 211 on the outer wall of the filter cartridge 210 of the water filtration unit 200 is blocked by fish feces, feed residue, and other dirt, the water in the inlet chamber 101 cannot flow smoothly into the disinfection chamber 102. The water inflow into the disinfection chamber 102 decreases, and the water level inside the chamber gradually drops to the system's preset low threshold. When the controller 400 receives a low water level signal, it automatically starts the spray head 250 to perform backwashing, eliminating the need for manual on-site inspection to determine the blockage status of the filter cartridge 210, thus achieving fully automatic filter cleaning.

[0035] Finally, the water oxygenation unit 300 is installed inside the disinfection chamber 102. The water oxygenation unit 300 includes a conical shell 310, a booster pump 320, and an oxygen supply pipe. The conical shell 310 has a conical structure that is narrower at the top and wider at the bottom. The top of the conical shell 310 has a water inlet channel 340, and the bottom has a water outlet channel 350. The water inlet of the booster pump 320 is completely submerged in the water in the disinfection chamber 102. The water outlet of the booster pump 320 is connected to the water inlet channel 340 at the top of the conical shell 310. The booster pump 320 continuously pumps the disinfected water in the disinfection chamber 102 and pressurizes it to deliver it into the conical shell 310. An oxygen supply pipe is connected to the water inlet channel 340 at the top of the conical shell 310. The oxygen supply pipe can be equipped with an oxygen generator or a high-pressure oxygen cylinder as the oxygen supply source according to the user's breeding needs. A check valve is installed on the oxygen supply pipe to prevent high-pressure water in the conical shell 310 from flowing back into the oxygen generator or oxygen cylinder, thus ensuring the safe use of the oxygen supply equipment.

[0036] The water inside the conical shell 310 is mixed with oxygen by the pipeline pressure provided by the booster pump 320, and then directly transported from the bottom outlet channel 350 to the circulation outlet 120 of the casing 100. It then flows back to the aquaculture pond by the delivery pressure of the booster pump 320. There is no need to add an additional delivery pump at the outlet, which simplifies the configuration of the power components of the whole machine and reduces the energy consumption and manufacturing cost of the equipment.

[0037] Specifically, a first water-oxygen mixer is fixedly installed at the end of the water inlet channel 340 inside the conical shell 310. The first water-oxygen mixer has multiple sets of staggered turbulence fan blades. When water and high-pressure oxygen flow synchronously through the first water-oxygen mixer, the turbulence fan blades are automatically rotated by the impact of the water flow, cutting the water flow into numerous small vortices. This significantly increases the contact area between oxygen and water, promoting the full dissolution of oxygen into the water and improving dissolved oxygen efficiency and oxygen utilization. Simultaneously, a second water-oxygen mixer can also be added inside the water outlet channel 350 at the bottom of the conical shell 310. The second water-oxygen mixer and the bottom surface of the conical shell 310 are spaced apart to form a return flow space. Undissolved oxygen can be fully mixed with the water again in this return flow space, further improving the dissolved oxygen stability of the effluent and ensuring that the water in the return aquaculture pond has a stable and compliant dissolved oxygen content.

[0038] This invention includes a second level gauge 330 installed at the conical shell 310. The second level gauge 330 can be a continuous level detection structure, extending outwards from the housing 100, allowing operators to directly observe the liquid level within the conical shell 310. When the second level gauge 330 detects insufficient water or an abnormal liquid level within the conical shell 310, it indicates an imbalance between the water pressure generated by the booster pump 320 and the oxygen pressure output from the oxygen supply pipe. In this case, the oxygen output pressure can be adjusted by regulating the oxygen pressure regulating valve on the oxygen supply pipe, achieving a balance between the water and oxygen pressures. Under these balanced conditions, oxygen can fully and efficiently dissolve in the water within the conical shell 310, forming oxygen-rich water that then stably flows back into the aquaculture pond, ensuring that the dissolved oxygen levels in the pond meet the standards.

[0039] When the equipment is running, the whole machine controller 400 is linked with the water quality monitoring system in real time. When the water quality sensor detects that the dissolved oxygen concentration in the aquaculture pond is lower than the threshold of the aquaculture safety standard, the controller 400 automatically adjusts the output power of the booster pump 320 and simultaneously increases the oxygen supply flow of the oxygen supply pipe, thereby increasing the overall working efficiency of the water oxygenation unit 300, rapidly increasing the dissolved oxygen content in the aquaculture pond, and meeting the high dissolved oxygen requirements of high-density factory aquaculture.

[0040] In some embodiments of the present invention, both the disinfection chamber 102 and the conical shell 310 are equipped with independent drainage devices 103 at their bottoms. During equipment shutdown, maintenance, and cleaning phases, the drainage devices 103 can be opened separately to drain the internal water, facilitating maintenance and cleaning of fine impurities deposited at the bottom. Of course, during the water change phase, the water can also be changed by opening the drainage device 103 of the disinfection chamber 102.

[0041] In summary, the complete aquaculture water circulation system integrates all core functional components, including the inlet chamber 101, disinfection chamber 102, disinfection device, water filtration unit 200, and water aeration unit 300, using a single integrated casing 100. It utilizes the water level difference between the inlet chamber 101 and the aquaculture pond to achieve gravity-flow transport of aquaculture return water, significantly reducing the need for water pumps and lowering operating energy consumption. It also features a complete automatic filtration and backwashing system, dual disinfection, high-pressure cone-shaped oxygenation, water quality monitoring, and automatic water exchange and replenishment linkage control system. Water circulation, water quality control, and equipment cleaning processes are all fully automated, requiring no continuous manual operation. The equipment has a compact structure, small footprint, simple piping layout, and is easy to install, debug, and maintain, making it well-suited for the needs of intensive and small-scale aquaculture. Meanwhile, the whole machine is equipped with a multi-position controllable drainage device 103, a multi-parameter water quality monitoring module, and an adjustable oxygenation structure. The operating parameters can be flexibly adjusted according to different aquaculture species and different stocking densities, effectively stabilizing various water quality indicators of the aquaculture water, avoiding aquatic stress and mortality caused by water quality fluctuations, significantly improving the survival rate of aquaculture, and providing stable and reliable integrated water purification equipment support for factory-scale recirculating aquaculture.

[0042] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An integrated water circulation machine for aquaculture, characterized in that, include: The casing (100) is internally divided into an inlet chamber (101) and a disinfection chamber (102). The casing (100) is provided with a circulating inlet (110), a circulating outlet (120), and a water replenishment outlet (130). The circulating inlet (110) and the water replenishment outlet (130) are directly connected to the inlet chamber (101). The circulating inlet (110) and the circulating outlet (120) are connected to the aquaculture pond. The water level of the inlet chamber (101) is lower than the operating water level of the aquaculture pond to form a high-low water level difference structure, so that the water in the aquaculture pond flows into the inlet chamber (101) without power. The inlet chamber (101) is provided with a guide channel connecting to the disinfection chamber (102). The disinfection chamber (102) is equipped with a disinfection device. A water filtration unit (200) is installed at the flow channel and is used to filter the water flowing into the disinfection chamber (102) from the flow channel. A water oxygenation unit (300) is provided in the disinfection chamber (102). The water oxygenation unit (300) is provided with an inlet channel (340) that connects to the disinfection chamber (102) and an outlet channel (350) that connects to the circulating outlet (120). The water inlet (130) is connected to a water supply pipe equipped with a switch valve. Fresh water enters the water inlet chamber (101) from the water inlet (130), and after filtration, disinfection and dissolved oxygen treatment, it is guided to the aquaculture pond through the circulating water outlet (120), forming a fresh water pretreatment water replenishment path.

2. The integrated aquaculture water circulation machine according to claim 1, characterized in that: It also includes a water quality monitoring system, which is used to monitor the concentrations of ammonia nitrogen, nitrite, and dissolved oxygen in the aquaculture pond.

3. The integrated aquaculture water circulation machine according to claim 2, characterized in that: The bottom of the water inlet chamber (101) or the disinfection chamber (102) is provided with a drainage device (103). When the ammonia nitrogen concentration or nitrite concentration of the aquaculture pond is higher than the preset threshold, the switch valve is opened and the drainage device (103) starts to drain water.

4. The integrated aquaculture water circulation machine according to claim 1, characterized in that: The water filtration unit (200) includes a filter cartridge (210), which has a filter inlet covering the flow channel, and the outer wall of the filter cartridge (210) is covered with a screen (211).

5. The integrated aquaculture water circulation machine according to claim 4, characterized in that: The water filtration unit (200) also includes a rotary power source (220) and a rotary mechanism (230), which drives the filter cartridge (210) to rotate inside the disinfection chamber (102) under the drive of the rotary power source (220).

6. The integrated aquaculture water circulation machine according to claim 5, characterized in that: The water filtration unit (200) also includes a drain trough (240) and multiple spray heads (250). The multiple spray heads (250) are fixedly arranged on the outer side of the filter cylinder (210). The multiple spray heads (250) are arranged at intervals along the axial length of the filter cylinder (210). The drain trough (240) is fixedly arranged on the inner side of the filter cylinder (210) and directly opposite the multiple spray heads (250). The housing (100) is provided with a drain port (140) that communicates with the drain trough (240).

7. The integrated aquaculture water circulation machine according to claim 6, characterized in that: The disinfection chamber (102) is equipped with a first level gauge (260), which is electrically connected to the spray head (250).

8. The integrated aquaculture water circulation machine according to claim 1, characterized in that: The water oxygenation unit (300) includes a conical shell (310) and a booster pump (320). The top and bottom of the conical shell (310) are respectively provided with the water inlet channel (340) and the water outlet channel (350). The water inlet of the booster pump (320) is connected to the disinfection chamber (102), and the water outlet of the booster pump (320) is connected to the water inlet channel (340) to pressurize and deliver water into the conical shell (310). The water in the conical shell (310) flows back to the aquaculture pond from the water outlet channel (350) through the circulation outlet (120) by means of the pipeline pressure provided by the booster pump (320).

9. The integrated aquaculture water circulation machine according to claim 8, characterized in that: The water inlet channel (340) is connected to an oxygen supply pipe, and the conical shell (310) is provided with a water-oxygen mixer that is connected to the water inlet channel (340).

10. The integrated aquaculture water circulation machine according to claim 1, characterized in that: The disinfection device includes at least one of an ultraviolet germicidal lamp or an ozone generator.

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