Yellow River fish breeding device and breeding method

Abstract

The invention relates to the technical field of Yellow River fish breeding, in particular to a Yellow River fish breeding device and breeding method.The Yellow River fish breeding device comprises a hatching mechanism, a water inlet pipe, an adjuster, a water circulation assembly, an oxygenation mechanism, a water supply pipe and a recovery tank; the hatching mechanisms are installed in parallel, the water inlet pipe is installed in the middle of the hatching mechanisms, the adjuster is installed in the middle of the water inlet pipe, the water circulation assembly is installed on the side face of the top of each hatching mechanism, and the oxygen adding mechanism is installed on the side face of the water circulation assembly. The water supply pipe is mounted on the water inlet pipe, and the recovery tank is mounted below the water circulation assembly; the water inlet pipe inputs treated water needed by hatching into the hatching mechanism, newly added water flows upwards to take away impurities in the hatching process, and the water flows into the recovery tank through the water circulation assembly to be treated and drives the driving impeller to rotate.

Description

Technical Field

[0001] This invention relates to the field of Yellow River fish breeding technology, and in particular to a Yellow River fish breeding device and breeding method. Background Technology

[0002] As a freshwater fish with high economic value, valued for both its ornamental and edible aspects, the breeding and cultivation techniques of the Yellow River sturgeon have always been a key focus in the aquaculture industry. The Yellow River sturgeon has high requirements for water quality during the hatching stage, especially the maintenance of dissolved oxygen concentration, which directly affects the survival rate and hatching rate of the eggs. In actual cultivation, because the eggs are metabolically active during hatching, they continuously consume oxygen in the water. If the dissolved oxygen level is insufficient, it can easily lead to delayed embryonic development, increased deformity rates, or even large-scale mortality, causing serious economic losses. Existing hatching methods typically involve placing the eggs together in incubators or hatching tanks for unified hatching. However, these devices are primarily designed to isolate the eggs and prevent bacterial infection, but their ability to maintain dissolved oxygen is limited. Therefore, they require external aerators or oxygenation devices to maintain dissolved oxygen levels in the water. Since air pumps usually require continuous power supply, this increases energy consumption and equipment maintenance costs. Furthermore, if the power supply is interrupted or the aerator malfunctions, the dissolved oxygen in the hatching environment will drop rapidly, easily leading to hatching failure. Therefore, how to maintain a stable and sufficient dissolved oxygen level in the hatching environment without relying on additional oxygenation equipment has become a key technical problem that urgently needs to be solved in the hatching process of Yellow River fish with bone lips.

[0003] On the other hand, existing hatcheries for Yellow River sturgeon (Caryota gracilis) also have significant shortcomings in terms of water circulation and oxygen exchange efficiency. Traditional hatching devices mostly employ static water environments or simple flowing water structures. While these can renew the water to some extent, their overall oxygen exchange efficiency is low, making it difficult to continuously meet the dissolved oxygen requirements of fish eggs in a high-density hatching environment. Furthermore, external aeration devices tend to generate large bubbles during oxygen supply. These bubbles, as they rise in the water, can cause irregular floating of the fish eggs, and may even cause mechanical damage to the fragile, unhatched eggs. Simultaneously, the low dissolution efficiency of large bubbles leads to low oxygen utilization, further increasing energy consumption. Moreover, the installation and maintenance of additional aeration equipment places higher technical demands on fish farmers, increasing operational difficulty and farming costs for small and medium-sized farms. In conclusion, existing Yellow River sturgeon hatching methods have significant deficiencies in dissolved oxygen supply, necessitating the development of a breeding device and method that can automatically maintain high dissolved oxygen levels during hatching, improve hatching success rates, and reduce energy consumption and equipment dependence, thereby overcoming the technical bottlenecks in the application of existing technologies for Yellow River sturgeon hatching.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs a breeding device and breeding method for Yellow River fish with bony lips, thus solving the above technical problems. Summary of the Invention

[0005] The technical objective of this invention is to design a breeding device and method for Yellow River fish with bony lips. The device utilizes the gravitational potential energy of the flowing water to drive the impeller to rotate, thereby mixing compressed air into the water inlet pipe. The air bubbles continuously break up and rise in the water, making full contact with the water, thus increasing the contact area and time between the air and the water, allowing oxygen to gradually dissolve into the water, increasing the dissolved oxygen content of the water body, and achieving the purpose of gentle aeration.

[0006] To achieve the above-mentioned technical objectives, the present invention provides the following technical solution:

[0007] A breeding device for Yellow River fish with bony lips includes a hatching mechanism, a water inlet pipe, a regulator, a water circulation component, an oxygenation mechanism, a water supply pipe, and a recycling tank. Multiple hatching mechanisms are arranged in parallel. The water inlet pipe is installed in the middle of each hatching mechanism, allowing clean water from the water supply pipe to flow into the bottom of the hatching mechanism. The regulator is installed in the middle of the water inlet pipe, regulating the water supply. The water circulation component is installed on the side of the top of each hatching mechanism, collecting the upper layer of water containing impurities and discharging it into the recycling tank for unified treatment and reuse. The oxygenation mechanism is installed on the side of the water circulation component, where an internal drive component, driven by an impeller, moves a piston block up and down within the working chamber. A one-way valve controls the gas flow, allowing compressed air to be input into the air inlet pipe. The water supply pipe is installed above the water inlet pipe, providing a stable flow of clean water. The recycling tank is installed below the water circulation component, collecting and recycling wastewater from multiple hatching mechanisms for reuse.

[0008] The water inlet pipe inputs the treated water required for incubation into the incubation mechanism. The newly added water enters from the bottom of the incubation tube, flows upward and carries away the impurities generated during the incubation process. It then flows into the recycling tank through the water circulation component for treatment and drives the drive impeller to rotate. This causes the drive rod installed on one side of the drive impeller to rotate, which drives the piston block to pump air into the air inlet pipe. The gas mixes into the water inlet pipe and is discharged from the bottom of the incubation tube. The air bubbles continuously break up and rise in the water, making full contact with the water, thereby increasing the contact area and time between the air and the water, allowing oxygen to gradually dissolve into the water and increasing the dissolved oxygen content of the water.

[0009] The incubation mechanism includes an incubation tube, a diversion channel, and an outlet. The incubation tube, as the main body of the mechanism, contains the fish eggs and provides a relatively independent and stable incubation environment. The bottom of the incubation tube is designed with an arc-shaped structure, which not only facilitates the even distribution and backflow of water but also prevents the fish eggs from accumulating in corners, reducing mortality due to lack of oxygen or sedimentation. The incubation tube is made of high-strength acrylic material, featuring good transparency, high strength, and corrosion resistance, facilitating observation of the incubation process and extending its service life. The inlet pipe is installed in the middle of the incubation tube, allowing the incoming water to quickly diffuse throughout the entire tube, ensuring uniform water exchange. The diversion channel is located in the arc-shaped structure at the bottom of the incubation tube, which can reasonably disperse the water flow, avoiding direct impact on the fish eggs. The outlet is located above the diversion channel, guiding the water flow smoothly out, forming a continuous circulating water environment, thereby providing stable dissolved oxygen conditions and a good incubation environment for the fish eggs.

[0010] It also includes incubation boxes, whose main function is to create multiple small, relatively independent incubation spaces inside the incubation cylinder. This separates the fish eggs, preventing them from being damaged or killed simultaneously due to localized water flow abnormalities, temperature fluctuations, or mechanical impacts during incubation, thus improving the hatching success rate. The incubation boxes are installed on the inner wall of the incubation cylinder, fitting tightly to the cylinder body, making full use of the cylinder space, and ensuring that water flows evenly through each incubation unit. The cross-sectional shape of the incubation box is designed as a fan-shaped ring. This structure facilitates the even distribution of fish eggs and optimizes the water flow path, creating a circular circulation of water flowing through the incubation box and improving the problem of insufficient dissolved oxygen in some areas. The bottom of the incubation box is hollow, forming a buffer zone when water flows through it, reducing the direct impact on the fish eggs, while also reducing the overall weight and facilitating installation and cleaning. Multiple overflow holes are opened at the top of the incubation box. These overflow holes allow water to be evenly dispersed as it flows through the incubation box, forming a stable circulating water flow, providing sufficient dissolved oxygen for the fish eggs, and ensuring that the fish eggs hatch successfully in a safe, flowing, and balanced environment.

[0011] The water circulation assembly includes a water outlet block, an air inlet pipe, a water outlet pipe, and a drive impeller. The water outlet block is installed on the side of the top of the hatching mechanism, serving as a key component for water circulation and distribution. The air inlet pipe is installed in the middle of the water outlet block and connected to the water inlet pipe. This arrangement ensures that externally input water and gas can enter the hatching chamber in a timely manner, thereby improving the dissolved oxygen efficiency of the water. The water outlet pipe is installed below the water outlet block to guide the distributed water into the hatching chamber, maintaining continuous water circulation. The drive impeller is installed on the side of the hatching mechanism and is eccentrically mounted relative to the water outlet pipe. This design allows the impeller to create a spiral disturbance in the water flow when rotating, resulting in a uniform water distribution within the hatching chamber and preventing stagnant areas. This water circulation assembly, through the coupling of water and gas, achieves dual protection of dissolved oxygen and water flow in the hatching environment, thus providing more stable hatching conditions for fish eggs.

[0012] The oxygenation mechanism includes an oxygenation cylinder, a drive assembly, a telescopic rod, a piston block, and a sealing ring. The oxygenation cylinder is installed on the side of the water circulation assembly, serving as the main bearing chamber for the entire oxygenation process, used to compress and release air. The drive assembly is installed inside the oxygenation cylinder and is the power source for the oxygenation mechanism, driving the telescopic rod to reciprocate. The telescopic rod is installed above the drive assembly and works in close cooperation with it, achieving precise extension and retraction through the operation of the drive assembly. The piston block is fixed to the upper end of the telescopic rod, forming a reciprocating compression and intake process within the oxygenation cylinder as the telescopic rod moves. To ensure airtightness and stability during compression and intake, a sealing ring is installed on the side of the piston block, effectively preventing air or water leakage and improving the efficiency of air pressure formation. Through the cooperation of these structures, the oxygenation mechanism can continuously and evenly inject air into the water in the hatching environment, increasing the dissolved oxygen content, thereby providing sufficient oxygen supply for fish eggs and fry, ensuring successful hatching.

[0013] The dissolved oxygen level in the incubation environment is stabilized by the water circulation components and oxygenation mechanism. Through the coordinated operation of the drive impeller and oxygenation cylinder, the water forms a continuous circulation in the incubation cylinder, while the piston compresses air and injects it evenly into the water.

[0014] In one preferred embodiment of the present invention, the intercepting net frame is installed on the inner surface of the hatching tube to isolate and protect the hatching environment. A filter screen is fixedly installed on the intercepting net frame, with a mesh diameter of 0.8-1mm. This size effectively prevents fish eggs and newly hatched fry from leaking out with the water flow while ensuring smooth water circulation without affecting overall water exchange and dissolved oxygen efficiency. The filter screen material is selected from corrosion-resistant, high-strength, and non-deformable polymer fibers or stainless steel wire mesh, thus maintaining stability and durability under prolonged immersion conditions. The proper combination of the intercepting net frame and the filter screen creates a relatively closed and evenly flowing hatching space in the hatching tube, ensuring the safe growth of fish eggs and fry.

[0015] As a preferred embodiment of the present invention, the oxygenation cylinder includes a drive chamber, a working chamber, an outlet chamber, and an inlet chamber. The drive chamber is located inside the oxygenation cylinder and houses the drive assembly, providing space for the reciprocating motion of the telescopic rod and the piston block. The working chamber is located above the drive chamber and is the main area for air compression and release; the piston block effectively compresses the air as it moves within the chamber. The outlet chamber is located above the working chamber and is used to promptly discharge the compressed air and introduce it into the water body, thereby increasing the dissolved oxygen level. The inlet chamber is located next to the outlet chamber and is mainly used to replenish fresh air from the outside, enabling the oxygenation cylinder to maintain a stable intake and exhaust cycle during continuous operation. Through the multi-chamber partition design, the oxygenation cylinder achieves efficient connection between the air intake, compression, and exhaust processes.

[0016] As a preferred embodiment of the present invention, the oxygenation cylinder further includes a one-way valve; this one-way valve is installed in the connecting channel between the outlet chamber, the inlet chamber, and the working chamber, respectively, for effectively controlling the gas flow direction. Specifically, the one-way valve on the outlet chamber controls that gas can only enter the outlet chamber from the working chamber, preventing gas backflow and ensuring that compressed air can be smoothly discharged into the water, thereby improving oxygen dissolution efficiency. The one-way valve on the inlet chamber controls that gas can only enter the working chamber from the inlet chamber, ensuring that fresh air can be drawn in promptly during the piston return stroke. Through the coordinated action of the two one-way valves, an orderly cycle of intake and exhaust is achieved inside the oxygenation cylinder, making the air compression process more stable and reliable, avoiding airflow turbulence, and further improving the overall oxygenation effect.

[0017] As a preferred embodiment of the present invention, the drive assembly includes a drive rod and a crank-rotating block. The drive rod is installed inside the drive chamber and fixedly connected to an external drive impeller. When the impeller rotates under the action of water flow, it drives the drive rod to rotate synchronously. A crank-rotating block is installed at the middle position of the drive rod. The crank structure converts the rotational motion of the drive rod into reciprocating linear motion, thereby driving the telescopic rod to extend and retract. The telescopic rod is installed between two crank-rotating blocks. Through the cooperation of the two cranks, the extension and retraction action is made smoother and more uniform. This structure not only ensures the smooth reciprocating compression process of the piston block in the working chamber but also effectively improves the efficiency of air compression and release, continuously providing dissolved oxygen to the incubation water.

[0018] A method for breeding Yellow River fish with bony lips, the method being used in conjunction with the aforementioned Yellow River fish breeding device with bony lips; the steps of the method are as follows:

[0019] Step 1: Rinse the fertilized eggs obtained by artificial insemination with clean water 2-3 times to remove excess semen and broken egg membranes. Then soak them in a low concentration of salt or iodine solution (such as povidone-iodine) for 5-10 minutes to kill harmful bacteria on the egg surface and prevent water mold growth. After disinfection, rinse them thoroughly with clean water to prepare them for placement in the incubation tube.

[0020] Step 2: First, turn on the water supply pipe and adjust the water flow speed so that the fish eggs on all the filter screens of the interception net frame can be slightly washed up and rolled evenly. Then, evenly sprinkle the disinfected fertilized eggs into the hatching tank, ensuring that the eggs can be quickly dispersed by the water flow and distributed on the hatching box, with the density being such that they do not overlap.

[0021] Step 3: The water supply pipe needs to be kept stable to facilitate the timely removal of metabolic waste and prevent oxygen deficiency caused by water outages or filter blockage. The water temperature should be kept stable at the suitable temperature for the breeding of Yellow River fish (e.g., 18-22℃). The temperature difference should not exceed 2℃. A layer of black opaque plastic sheet should be placed on the outside of the incubation tube to keep the incubation environment dark or with low light.

[0022] Step 4: Regularly check the embryo development, promptly remove dead eggs that have stopped developing or turned white and moldy with a pipette to prevent water mold from spreading and infecting healthy eggs, observe the water flow, clean the filter screen to keep it clear, and if water mold is found, use a safe drug to prevent water mold for a short-term medicated bath treatment as appropriate.

[0023] Step 5: After the fry hatch, reduce the water flow appropriately to prevent them from expending too much energy. Once most of the fry can swim horizontally, stop the water flow. Collect the fry at the outlet using a fry collection net cage, or carefully scoop them from the hatching tank. Before transferring them to the temporary holding tank, adjust the temperature to allow them to acclimate, and feed them suitable starter food.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention, by setting up an incubation box inside the incubation tube, divides the fish eggs into multiple independent small spaces during the incubation process, effectively avoiding concentrated damage to the fish eggs caused by localized abnormal water flow or accidental impacts. The fan-shaped ring structure and hollow bottom design of the incubation box not only optimize water circulation and improve water uniformity, but also reduce the direct impact of water flow on the fish eggs, thereby significantly improving the survival rate of the fish eggs and the overall hatching success rate, ensuring the healthy development of the fish fry.

[0026] 2. This invention achieves stable control of dissolved oxygen levels in the hatching environment through a water circulation component and an oxygenation mechanism. Through the coordinated operation of the drive impeller and the oxygenation cylinder, water continuously circulates within the hatching cylinder, while the piston compresses air and evenly injects it into the water, effectively increasing the dissolved oxygen content. This not only meets the high dissolved oxygen requirements of the Yellow River fish but also eliminates the need for additional external oxygenation equipment, thereby reducing equipment costs and operational complexity, and improving the automation and reliability of the hatching system.

[0027] 3. This invention fully considers hatching safety and ease of operation in its structural design. The intercepting net frame, used in conjunction with the filter screen, effectively prevents fish eggs or fry from being lost with the water flow while maintaining smooth water flow. Components such as the oxygenation cylinder, drive assembly, telescopic rod, piston block, and one-way valve work together to ensure efficient and orderly air intake, compression, and exhaust, guaranteeing a stable hatching environment. The overall device achieves a high degree of integration between fish egg hatching and dissolved oxygen in the water, significantly improving the hatching efficiency and fry survival rate of the Yellow River sturgeon. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of a single incubation mechanism structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the internal structure of the incubation mechanism of the present invention;

[0031] Figure 4 This is a cross-sectional view of the incubation mechanism of the present invention;

[0032] Figure 5 This is a schematic diagram of the water circulation component of the present invention;

[0033] Figure 6 This is a schematic diagram of the oxygenation mechanism of the present invention;

[0034] Figure 7 This is a cross-sectional view of the oxygenation mechanism of the present invention;

[0035] Figure 8 This is the present invention. Figure 7A magnified view of a portion of the image;

[0036] Figure 9 This is a schematic diagram of the driving component structure of the present invention.

[0037] Reference numerals: 1. Incubation mechanism; 11. Incubation cylinder; 12. Diversion channel; 13. Water outlet; 14. Incubation box; 15. Interception net frame; 2. Water inlet pipe; 3. Regulator; 4. Water circulation assembly; 41. Water outlet block; 42. Air inlet pipe; 43. Water outlet pipe; 44. Drive impeller; 5. Oxygenation mechanism; 51. Oxygenation cylinder; 511. Drive chamber; 512. Working chamber; 513. Air outlet chamber; 514. Air inlet chamber; 515. One-way valve; 52. Drive assembly; 521. Drive rod; 522. Crank rotating block; 53. Telescopic rod; 54. Piston block; 55. Sealing ring; 6. Water supply pipe; 7. Recovery tank. Detailed Implementation

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] like Figures 1-9 As shown in the figure, this embodiment provides a breeding device for Yellow River fish with bony lips, including an incubation mechanism 1, a water inlet pipe 2, a regulator 3, a water circulation assembly 4, an oxygenation mechanism 5, a water supply pipe 6, and a recovery tank 7. Multiple incubation mechanisms 1 are provided and installed in parallel within the incubation system. Each incubation mechanism 1 is an independent incubation unit used to accommodate fish eggs and create a stable incubation environment. The water inlet pipe 2 is installed in the middle of the incubation mechanism 1 and is used to input treated clean water supplied by the water supply pipe 6 into the bottom of the incubation mechanism 1. The regulator 3 is installed in the middle of the water inlet pipe 2 and is used to regulate the water supply to each incubation mechanism 1, ensuring uniform water flow in each incubation unit and meeting the water flow conditions required for fish egg incubation.

[0040] The water circulation component 4 is installed on the side of the top of the incubation mechanism 1 to collect impurities and upper wastewater generated during the incubation process, and discharges them into the recycling tank 7 for unified treatment and reuse. The oxygenation mechanism 5 is installed on the side of the water circulation component 4 and includes components such as an oxygenation cylinder 51, a drive component 52, a telescopic rod 53, a piston block 54, and a one-way valve 515. The drive impeller 44 drives the internal drive component 52 under the action of water flow, causing the piston block 54 to move up and down reciprocally in the working chamber 512. The one-way valve 515 controls the entry and exit of gas, realizing the injection of compressed air into the water inlet pipe 2, thereby evenly dispersing oxygen into the water at the bottom of the incubation cylinder 11.

[0041] Water supply pipe 6 is installed above water inlet pipe 2 to provide a stable and continuous flow of clean water, ensuring the renewal of water and the balance of dissolved oxygen in the incubation tank 11. Recycling tank 7 is installed below water circulation assembly 4 to collect wastewater generated by multiple incubation units 1, which is then treated and recycled, thereby achieving efficient utilization of water resources and a stable incubation environment.

[0042] During use, the inlet pipe 2 introduces the treated water required for hatching into the bottom of the hatching tank 11. The newly added water flows upward, carrying away impurities generated during the hatching process. When the water flows through the water circulation component 4, it drives the drive impeller 44 to rotate, causing the drive rod 521 on one side of the drive impeller 44 to drive the piston block 54 to reciprocate within the working chamber 512. This compresses the air and injects it into the inlet pipe 2 through the one-way valve 515. As the air bubbles rise and come into full contact with the water, the contact area and time between the air and water are increased, gradually raising the dissolved oxygen level. This ensures that the oxygen concentration in the hatching water meets the requirements for normal hatching of Yellow River fish eggs, thus improving the hatching success rate.

[0043] This embodiment achieves continuous circulation of the hatching water, full dissolution of oxygen, and effective removal of impurities through the coordinated action of the water inlet pipe 2, regulator 3, water circulation component 4, and oxygenation mechanism 5. This provides a stable and efficient environmental condition for the hatching of Yellow River fish with bone lips, while reducing reliance on external oxygenation equipment and improving the automation level and efficiency of the breeding device.

[0044] like Figures 3-4 As shown, in this embodiment, the hatching mechanism 1 includes a hatching cylinder 11, a diversion channel 12, and a water outlet 13. The hatching cylinder 11, as the main body of the hatching mechanism 1, is used to contain the eggs of the Yellow River fish and provide a relatively independent and stable hatching environment. The bottom of the hatching cylinder 11 is designed with an arc-shaped structure. This design not only facilitates the uniform distribution and backflow of water within the hatching cylinder 11, but also effectively prevents the fish eggs from accumulating in corners or at the bottom, reducing the mortality rate of fish eggs due to localized hypoxia or sedimentation. The hatching cylinder 11 is made of high-strength acrylic material, which has good transparency, high strength, and corrosion resistance. This not only facilitates the operator's observation of the hatching process but also ensures structural stability and durability during long-term use.

[0045] The inlet pipe 2 is installed in the middle of the hatching tube 11, allowing the incoming water to quickly diffuse to all areas inside the hatching tube 11, ensuring uniform water exchange and suitable flow rate, thereby meeting the dissolved oxygen requirements of the fish eggs. The diversion channel 12 is located in the arc-shaped structure at the bottom of the hatching tube 11. Its function is to rationally disperse the water flow, preventing direct impact on the fish eggs and reducing mechanical damage, while also promoting water circulation. The outlet hole 13 is located above the diversion channel 12, guiding the water flow smoothly out of the hatching tube 11, forming a continuously circulating water environment. Through the above structural design, the hatching tube 11 can achieve uniform water flow, sufficient dissolved oxygen, and continuous circulation, providing a stable hatching environment for the fish eggs, thereby improving the hatching rate and fry survival rate of the Yellow River fish.

[0046] In this embodiment, the incubation mechanism 1 also includes an incubation box 14, whose main function is to form multiple small, relatively independent incubation spaces inside the incubation tube 11 to separate the fish eggs, thereby effectively preventing all fish eggs from being damaged or dying simultaneously due to factors such as abnormal local water flow, temperature fluctuations, or mechanical impacts during the incubation process. This design can significantly improve the hatching success rate and the survival rate of fish fry, and ensure the stability of the incubation process.

[0047] The hatching box 14 is installed on the inner wall of the hatching cylinder 11 and fits tightly against the cylinder body, making full use of the cylinder space and allowing water to flow evenly through each hatching unit. The cross-sectional shape of the hatching box 14 is designed as a fan-shaped ring, which not only facilitates the even distribution of fish eggs but also optimizes the water flow path, creating a circular circulation of water flowing through the hatching box 14 and effectively improving the problem of insufficient dissolved oxygen in some areas. The bottom of the hatching box 14 is a hollow structure, which forms a buffer zone when water flows through it, reducing the direct impact of water flow on the fish eggs, while also reducing the overall weight and facilitating installation and cleaning.

[0048] In addition, multiple overflow holes are provided above the hatching box 14. These overflow holes allow the water to be evenly distributed as it flows through the hatching box 14, forming a stable circulating water flow, thereby providing sufficient dissolved oxygen for the fish eggs. Through the above design, the fish eggs can hatch smoothly in a safe, flowing, and balanced environment. The water flow is evenly distributed throughout the hatching process, ensuring the healthy development of the fish eggs and significantly improving hatching efficiency.

[0049] In this embodiment, the hatching mechanism 1 also includes an intercepting net frame 15, which is installed on the inner surface of the hatching tube 11 to effectively isolate and protect the hatching environment, preventing fish eggs or newly hatched fry from being lost with the water flow. A filter screen is fixedly installed on the intercepting net frame 15, and the mesh diameter of the filter screen is set to 0.8-1mm. This size can effectively block fish eggs and fry from passing through, while ensuring smooth water flow during circulation, without affecting the uniform exchange of water and dissolved oxygen efficiency inside the hatching tube 11.

[0050] The filter material is preferably made of corrosion-resistant, high-strength, and non-deformable polymer fiber or stainless steel wire mesh, ensuring good structural stability and service life even under long-term immersion in water, and preventing deformation or damage from affecting the protection of fish eggs. The proper combination of the interception net frame 15 and the filter creates a relatively closed and evenly flowing incubation space inside the incubation tank 11, which not only ensures the safety of fish eggs during incubation but also provides a stable water flow environment for newly hatched fry, promoting their healthy growth and improving the hatching success rate and fry survival rate.

[0051] like Figure 4 As shown, in this embodiment, the Yellow River fish breeding device further includes a water circulation component 4, which includes a water outlet block 41, an air inlet pipe 42, a water outlet pipe 43, and a drive impeller 44. The water outlet block 41 is installed on the side of the top of the hatching mechanism 1, serving as a key component for water circulation and distribution. It effectively collects and distributes the water in the hatching tube 11, ensuring smooth water circulation. The air inlet pipe 42 is installed in the middle of the water outlet block 41 and is connected to the water inlet pipe 2, allowing externally input water and gas to enter the hatching tube 11 in a timely manner, improving the dissolved oxygen efficiency and circulation effect of the water.

[0052] The water outlet pipe 43 is installed below the water outlet block 41 to reintroduce the rationally distributed water into the incubation tank 11, ensuring continuous circulation of water flow inside the incubation tank 11, uniform water flow velocity, and preventing the formation of local stagnant water zones. The drive impeller 44 is installed on the side of the incubation mechanism 1 and is eccentrically mounted relative to the water outlet pipe 43. When the impeller rotates, it can drive the water flow to generate a spiral disturbance, making the water flow evenly distributed inside the incubation tank 11, thereby improving the problem of insufficient dissolved oxygen in some areas.

[0053] Through the above design, the water circulation component 4 not only enables continuous water circulation but also couples with the gas input system, allowing the water flow to mix thoroughly with air and increasing the dissolved oxygen content of the water. This structure provides a uniform and stable water flow environment and sufficient oxygen supply for fish eggs, preventing egg death due to localized hypoxia or uneven water flow, thereby significantly improving the hatching success rate and fry survival rate.

[0054] like Figure 6As shown, in this embodiment, the hatching mechanism 1 of the Yellow River fish breeding device further includes an oxygenation mechanism 5. The oxygenation mechanism 5 includes an oxygenation cylinder 51, a drive assembly 52, a telescopic rod 53, a piston block 54, and a sealing ring 55. The oxygenation cylinder 51 is installed on the side of the water circulation assembly 4 and serves as the main bearing cavity for the oxygenation process, used to compress and release air, providing a stable dissolved oxygen environment for the water in the hatching cylinder 11. The drive assembly 52 is installed inside the oxygenation cylinder 51. The drive assembly 52 serves as the power source for the oxygenation mechanism 5 and can drive the telescopic rod 53 to reciprocate, thereby driving the piston block 54 to perform air compression and intake operations within the oxygenation cylinder 51.

[0055] The telescopic rod 53 is mounted above the drive assembly 52 and fits tightly with it, enabling precise and stable telescopic movement when the drive assembly 52 is in operation. The piston block 54 is fixedly mounted on the upper end of the telescopic rod 53, and completes the compression and intake process within the aeration cylinder 51 as the telescopic rod 53 reciprocates. To ensure the airtightness and efficiency of the air compression process, a sealing ring 55 is provided on the side of the piston block 54, effectively preventing air or water leakage, ensuring the stability of air pressure formation during aeration, and improving the efficiency of air injection into the water.

[0056] Through the above-mentioned structural combination, the oxygenation mechanism 5 can continuously and evenly inject air into the water in the incubation environment, so that the air and water can come into full contact, increase the oxygen dissolved, and thus provide sufficient oxygen supply for fish eggs and fry, ensuring the stable and smooth progress of the incubation process, and significantly improving the hatching success rate of fish eggs and the survival rate of fish fry, while achieving efficient and continuous oxygenation function.

[0057] like Figures 7-8 As shown, in this embodiment, the oxygenation cylinder 51 of the oxygenation mechanism 5 includes a drive chamber 511, a working chamber 512, an outlet chamber 513, and an inlet chamber 514. The drive chamber 511 is located inside the oxygenation cylinder 51 and is used to accommodate the drive assembly 52, providing sufficient space for the reciprocating motion of the telescopic rod 53 and the piston block 54. When the drive assembly 52 operates within the drive chamber 511, it can drive the telescopic rod 53 and the piston block 54 to achieve stable up-and-down reciprocating motion, thereby providing a power source for air compression.

[0058] The working chamber 512, located above the drive chamber 511, is the main area for air compression and release. When the piston block 54 moves up and down within the working chamber 512, the air is effectively compressed, thereby pressurizing and storing the air entering the oxygenation cylinder 51. The exhaust chamber 513, located above the working chamber 512, is used to promptly discharge the compressed air and inject it into the hatching cylinder 11 or the water circulation system through the air inlet pipe 42, ensuring the air fully dissolves into the water, increasing the dissolved oxygen level, and guaranteeing the normal hatching of fish eggs and fry.

[0059] The air intake chamber 514 is located beside the air outlet chamber 513, used to supplement fresh air from the external environment. This ensures that the oxygenator 51 maintains a stable air intake and exhaust cycle during continuous operation, guaranteeing an uninterrupted air supply. Through the rational partitioning design of the drive chamber 511, working chamber 512, air outlet chamber 513, and air intake chamber 514, the oxygenator 51 can achieve efficient air intake, compression, and exhaust, providing uniform, stable, and continuous dissolved oxygen conditions for the hatching water. This improves the hatching environment for fish eggs, increasing the hatching success rate and the survival rate of fish fry.

[0060] In this embodiment, the oxygenation cylinder 51 also includes a one-way valve 515, which is installed in the connecting channel between the outlet chamber 513, the inlet chamber 514, and the working chamber 512. This one-way valve 515 is used to effectively control the gas flow direction and ensure the orderly progress of the oxygenation process. Specifically, the one-way valve 515 on the outlet chamber 513 controls the gas flow to flow only from the working chamber 512 to the outlet chamber 513, preventing backflow of compressed air during discharge. This ensures that compressed air can smoothly enter the water body, improving the contact efficiency between air and water and the oxygen dissolution efficiency.

[0061] The one-way valve 515 on the intake chamber 514 controls the flow of gas only into the working chamber 512 from the intake chamber 514, ensuring that fresh air can be drawn in in time during the piston's return stroke, providing a sufficient gas source for the next compression. Through this design, the piston can form a stable intake and exhaust cycle during reciprocating motion, avoiding a decrease in oxygenation efficiency due to backflow or turbulence.

[0062] Through the coordinated action of the dual one-way valves 515 in the air outlet chamber 513 and the air inlet chamber 514, the air intake, compression, and exhaust processes inside the oxygenation cylinder 51 are efficiently connected, ensuring that the air flows in a predetermined direction within the oxygenation cylinder 51 and guaranteeing a stable and reliable compression process. This structure not only improves the efficiency of oxygenation but also ensures a continuous and stable dissolved oxygen content in the hatching water, providing a balanced and sufficient oxygen environment for fish eggs and fry, further enhancing the hatching success rate of fish eggs and the survival rate of fish fry.

[0063] The drive assembly 52 of the oxygenation mechanism 5 includes a drive rod 521 and a crank rotating block 522. The drive rod 521 is installed inside the drive chamber 511 of the oxygenation cylinder 51 and is fixedly connected to the external drive impeller 44. When the drive impeller 44 rotates under the action of water circulation, it can drive the drive rod 521 to rotate synchronously, providing a power source for the entire oxygenation mechanism 5. The crank rotating block 522 is provided at the middle position of the drive rod 521. This crank structure can convert the rotational motion of the drive rod 521 into reciprocating linear motion, thereby driving the telescopic rod 53 to perform up and down telescopic operation.

[0064] The telescopic rod 53 is installed between two crank-rotating blocks 522. Through the cooperation of the two cranks, the telescopic movement is made smoother and more uniform, preventing the piston block 54 from shaking or shifting within the working chamber 512, thus ensuring a smooth and efficient air compression and release process. This design not only ensures that the piston block 54 can complete a stable reciprocating compression motion within the working chamber 512, but also improves the efficiency of air intake and exhaust, enabling the aerator 51 to continuously provide uniform and sufficient dissolved oxygen to the incubation water.

[0065] As shown in the figure, through the design of the above-mentioned drive component 52, the oxygenation mechanism 5 can achieve efficient air compression and injection during the incubation process, ensuring a stable oxygen content in the water inside the incubation tank 11, providing a continuous and reliable oxygen supply for fish eggs and fry, thereby improving the hatching success rate and fry survival rate, and ensuring the stable operation and efficient work of the entire incubation system.

[0066] During operation, this invention provides a stable supply of treated water to the inlet pipe 2 via the water supply pipe 6 installed at the top. The inlet pipe 2 introduces the water flow into the bottom of the hatching tube 11, where it diffuses along the bottom arc-shaped structure and enters the diversion channel 12, achieving uniform water distribution and avoiding direct impact on the fish eggs. Simultaneously, it carries away impurities generated during the hatching process. As the water flows through the bottom of the hatching tube 11 and the annular space of the hatching box 14, a continuous circulating flow is formed. The water flows through the outlet hole 13 to the water circulation component 4 at the top of the hatching tube 11. The outlet block 41 of the water circulation component 4 collects and distributes the water flow, and the outlet pipe 43 guides the water into the recycling tank 7 for recycling and reuse. This ensures that the water is evenly distributed inside the hatching tube 11, eliminating stagnant areas and maintaining a stable circulating flow.

[0067] The incubation boxes 14 inside the incubation tube 11 divide the fish eggs into multiple small, independent incubation spaces. The bottom is hollow, and multiple overflow holes at the top allow water to flow around the incubation boxes 14, reducing direct impact while ensuring sufficient dissolved oxygen in the localized areas. Meanwhile, the intercepting net frame 15 and its filter screen are fixedly installed on the inner wall of the incubation tube 11. The filter screen has a pore size of 0.8-1mm, effectively preventing fish eggs and newly hatched fry from leaking out with the water flow, while ensuring smooth water flow without affecting circulation and dissolved oxygen efficiency.

[0068] During water circulation, the oxygenation mechanism 5 injects air through the oxygenation cylinder 51. The oxygenation cylinder 51 contains a drive chamber 511, a working chamber 512, an air inlet chamber 514, and an air outlet chamber 513. The drive chamber 511 houses the drive assembly 52 and the telescopic rod 53. The drive rod 521 is fixedly connected to the drive impeller 44 on the side of the incubation cylinder 11. The internal flow of the water outlet pipe 43 drives the drive impeller 44 to rotate, which in turn drives the drive rod 521. As the impeller rotates under the action of the water flow, it drives the drive rod 521 to rotate synchronously. The crank-rotating block 522 in the middle of the drive rod 521 converts the rotational motion into the reciprocating linear motion of the telescopic rod 53, causing the piston block 54 to move up and down within the working chamber 512. The sealing ring 55 on the side of the piston block 54 ensures that gas does not leak during compression and intake.

[0069] Outside air enters the working chamber 512 through the one-way valve 515 in the air intake chamber 514. Fresh air is drawn in as the piston block 54 moves downwards, and compressed air is discharged into the air intake pipe 42 through the one-way valve 515 in the air outlet chamber 513 as it moves upwards. This compressed air is then injected into the water at the bottom of the hatching tank 11 along with the water flow. The air bubbles break up and rise in the water, making full contact with the water and increasing the dissolved oxygen content. The oxygenation mechanism 5 works in conjunction with the water circulation component 4 to ensure continuous water circulation and uniform, sufficient dissolved oxygen within the hatching tank 11. The hatching box 14 separates the fish eggs, and the filter screen prevents leakage, creating a safe, flowing, and oxygen-stable hatching environment. This significantly improves the hatching success rate of fish eggs and the survival rate of fish fry, achieving an automated, efficient, and stable breeding process for the Yellow River fish.

[0070] Various modifications to this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein. Although one or more exemplary embodiments of this disclosure have been described with reference to the accompanying drawings, those skilled in the art will understand that…

Claims

1. A breeding device for Yellow River fish with bony lips, characterized in that, It includes an incubation mechanism (1), a water inlet pipe (2), a regulator (3), a water circulation assembly (4), an oxygenation mechanism (5), a water supply pipe (6), and a recycling tank (7); The incubation mechanism (1) is provided in multiple ways and is installed in parallel. The water inlet pipe (2) is installed in the middle of the incubation mechanism (1), the regulator (3) is installed in the middle of the water inlet pipe (2), the water circulation component (4) is installed on the side of the top of the incubation mechanism (1), the oxygenation mechanism (5) is installed on the side of the water circulation component (4), the water supply pipe (6) is installed above the water inlet pipe (2), and the recycling tank (7) is installed below the water circulation component (4). The water inlet pipe (2) inputs the treated water required for incubation into the incubation mechanism (1). The newly added water flows upward and carries away the impurities in the incubation process. It flows into the recycling tank (7) through the water circulation component (4) for treatment and drives the drive impeller (44) to rotate. This causes the drive rod (521) installed on one side of the drive impeller (44) to rotate, which drives the piston block (54) to pump air into the air inlet pipe (42). The gas mixes into the water inlet pipe (2) and is discharged from the bottom of the incubation cylinder (11), increasing the oxygen content in the incubation environment. The incubation mechanism (1) includes an incubation tube (11), a diversion channel (12), and a water outlet (13). The incubation tube (11) is set as the main body of the incubation mechanism (1). The bottom of the incubation tube (11) is set as an arc shape. The incubation tube (11) is made of high-strength acrylic. The water inlet pipe (2) is installed in the middle position of the incubation tube (11). The diversion channel (12) is opened in the arc structure at the bottom of the incubation tube (11). The water outlet (13) is opened on the top of the diversion channel (12). It also includes an incubation box (14); The incubation box (14) is installed on the inner wall of the incubation tube (11). The cross-sectional shape of the incubation box (14) is set as a fan ring. The bottom of the incubation box (14) is hollow. The top of the incubation box (14) is provided with multiple overflow holes. The water circulation component (4) includes a water outlet block (41), an air inlet pipe (42), a water outlet pipe (43), and a drive impeller (44). The water outlet block (41) is installed on the side of the top of the incubation mechanism (1), the air inlet pipe (42) is installed in the middle of the water outlet block (41), the air inlet pipe (42) and the water inlet pipe (2) are connected, the water outlet pipe (43) is installed below the water outlet block (41), the drive impeller (44) is installed on the side of the incubation mechanism (1), and the drive impeller (44) is eccentrically installed relative to the water outlet pipe (43); The oxygenation mechanism (5) includes an oxygenation cylinder (51), a drive assembly (52), a telescopic rod (53), a piston block (54), and a sealing ring (55). The oxygenation cylinder (51) is installed on the side of the water circulation assembly (4), the drive assembly (52) is installed inside the oxygenation cylinder (51), the telescopic rod (53) is installed on the drive assembly (52), the piston block (54) is installed on the telescopic rod (53), and the sealing ring (55) is installed on the side of the piston block (54). The dissolved oxygen level in the incubation environment is stabilized by the water circulation component (4) and the oxygenation mechanism (5). The water body forms a continuous circulation in the incubation tube (11) through the coordinated operation of the drive impeller (44) and the oxygenation cylinder (51), while the piston compresses (54) the air and injects it evenly into the water body.

2. The Yellow River fish breeding device according to claim 1, characterized in that: The incubation mechanism (1) also includes an interception net frame (15); the interception net frame (15) is installed on the inner surface of the incubation tube (11), and a filter screen is installed on the interception net frame (15), with the mesh diameter of the filter screen set to 0.8-1mm.

3. The Yellow River fish breeding device according to claim 2, characterized in that: The oxygenation cylinder (51) includes a drive chamber (511), a working chamber (512), an outlet chamber (513), and an inlet chamber (514). The drive chamber (511) is located inside the oxygen cylinder (51), the working chamber (512) is located above the drive chamber (511), the exhaust chamber (513) is located above the working chamber (512), and the intake chamber (514) is located next to the exhaust chamber (513).

4. The Yellow River fish breeding device according to claim 3, characterized in that: The oxygenation cylinder (51) also includes a one-way valve (515); The one-way valve (515) is installed in the connecting channel between the exhaust chamber (513), the intake chamber (514) and the working chamber (512). The one-way valve (515) of the exhaust chamber (513) controls the gas to enter the exhaust chamber (513) from the working chamber (512) in one direction, and the one-way valve (515) of the intake chamber (514) controls the gas to enter the working chamber (512) from the intake chamber (514) in one direction.

5. The Yellow River fish breeding device according to claim 4, characterized in that: The drive assembly (52) includes a drive rod (521) and a crank rotating block (522). The drive rod (521) is installed inside the drive cavity (511), and the drive rod (521) and the drive impeller (44) are fixedly connected. The crank rotating block (522) is installed in the middle of the drive rod (521), and the telescopic rod (53) is installed in the middle of the two crank rotating blocks (522).

6. A method for breeding Yellow River fish with bony lips, the method being used in conjunction with the Yellow River fish breeding apparatus according to any one of claims 1-5; characterized in that: The steps of the method are as follows: Step 1: Rinse the fertilized eggs obtained by artificial insemination with clean water 2-3 times to remove excess semen and broken egg membranes. Then soak them in a low concentration of salt or iodine preparation solution (such as povidone-iodine) for 5-10 minutes to kill harmful bacteria on the egg surface and prevent water mold growth. After disinfection, rinse them thoroughly with clean water to prepare them for placement in the incubation tube (11). Step 2: First, turn on the water supply pipe (6) and adjust the water flow speed so that the fish eggs on the filter screens of all the interception net frames (15) can be slightly flushed up and rolled evenly. Then, evenly sprinkle the disinfected fertilized eggs into the hatching tank to ensure that the eggs can be quickly flushed away by the water flow and distributed in the hatching box (14) with a density that does not overlap. Step 3: The water flow of the water supply pipe (6) needs to be continuously and stably supplied to facilitate the timely removal of metabolic waste and prevent water outages or filter blockages that could lead to oxygen deficiency. The water temperature should be kept stable at the suitable temperature for the breeding of Yellow River fish (e.g., 18-22℃). The temperature difference should not exceed 2℃. A layer of black opaque plastic sheet should be placed on the outside of the incubation tube (11) to keep the incubation environment dark or dimly lit. Step 4: Regularly check the embryo development, promptly remove dead eggs that have stopped developing or turned white and moldy with a pipette to prevent water mold from spreading and infecting healthy eggs, observe the water flow, clean the filter screen to keep it clear, and if water mold is found, use a safe drug to prevent water mold for a short-term medicated bath treatment as appropriate. Step 5: After the fry hatch, reduce the water flow appropriately to prevent the fry from expending too much energy. Once most of the fry can swim horizontally, stop the water flow and collect the fry at the outlet using a fry collection net cage, or carefully scoop them out from the hatching tank. Before transferring them to the temporary holding pond, adjust the temperature to allow them to adapt and feed them suitable starter feed.

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