Multi-layer incubator for salmons and incubation method thereof

Abstract

The invention relates to the technical field of fish egg incubation, in particular to a multi-layer incubator for salmons and an incubation method thereof, and the incubator comprises an incubation pool and a plurality of bearing units arranged in the incubation pool; a distance adjusting mechanism and a conveying unit are further arranged in the hatching pond, and the conveying unit comprises a plurality of spray heads; a control module is arranged at the top of the hatching pond, the control module generates a control signal according to the change of the hatching interval, and the control signal is used for driving the conveying unit to adjust the water yield of the nozzle; the output water flow parameter of the nozzle and the change of the incubation interval are kept in a preset corresponding relation, and the incubation interval of the bearing unit and the water flow parameter of the nozzle are subjected to linkage control, so that the problems that water flow coverage in a traditional fixed-interval incubator is not uniform, and dissolved oxygen supply cannot be matched with the development stage requirements of roes are solved. Due to the dynamic adjustable hatching distance, the interlayer space can be flexibly adjusted according to different development stages of salmon roes, and the oxygen dissolving environment is accurately matched with the water flow intensity.

Description

Technical Field

[0001] The present invention relates to the technical field of fish egg hatching, and in particular to a multi-layer incubator for salmon and a hatching method thereof. Background Art

[0002] In the artificial breeding of marine fish, the surface membrane of these fish eggs forms highly viscous clumps when exposed to seawater. This hinders oxygen exchange within the fertilized eggs during artificial breeding, allowing pathogens to grow. This, coupled with long incubation periods, results in generally low hatching success rates. To address this issue, existing technologies have improved the fertilization rate by artificially shaping the eggs and by using methods such as light baths and water flow stimulation to improve the incubation environment, which has, to a certain extent, enhanced breeding results.

[0003] However, the current incubation process still faces significant bottlenecks: mainstream technologies rely on small facilities such as incubation buckets and incubation tanks, and mostly use static water or limited flow incubation methods. The water body lacks fluidity and cannot meet the requirements of large-scale breeding for dissolved oxygen uniformity and water quality stability. For example, although Chinese patent CN115226661B proposes a simple and efficient method for incubating sticky fish eggs, it uses a flow-through incubation system to construct a relatively open incubation space using multiple layers of hatching cages, water spraying devices, and aeration devices. However, in actual application, the multi-layer structure of the hatching cages relies on fixed brackets for hanging, and the ability to adjust the spacing between the load-bearing units is limited, making it difficult to dynamically optimize the incubation space according to the development stage of the fish eggs. At the same time, the parameter control of the water spraying device is often based on preset conditions, which may lead to local water flow or dissolved oxygen unevenness, thus affecting the incubation of fish eggs. Summary of the Invention

[0004] To address these issues, a multi-layer incubator and incubation method for salmon are provided. By linking the hatching spacing of the carrier units with the nozzle water flow parameters, this solves the problems of uneven water coverage and inconsistent dissolved oxygen supply in traditional fixed-spacing incubators, which often occur during the developmental stages of the roe. The dynamically adjustable hatching spacing allows for flexible adjustment of the inter-layer spacing based on the developmental stages of the salmon roe, achieving precise adaptation of the dissolved oxygen environment to the water flow intensity.

[0005] To solve the problems of the prior art, the present invention provides a multi-layer incubator for salmon, comprising an incubation pool and a plurality of carrying units arranged in the incubation pool; the plurality of carrying units can synchronously move back and forth along the height direction of the incubation pool, and an adjustable incubation spacing is formed between two adjacent carrying units; a spacing adjustment mechanism for synchronously driving the plurality of carrying units to adjust the incubation spacing is also provided in the incubation pool; the plurality of carrying units are all connected to the spacing adjustment mechanism; a conveying unit is provided on the side of the carrying unit in the incubation pool, and the conveying unit includes a plurality of nozzles for conveying water into the incubation spacing; a control module is provided on the top of the incubation pool, the control module is electrically connected to the spacing adjustment mechanism and the conveying unit, and the control module is configured to detect and obtain parameters of the incubation spacing in real time; a control signal is generated according to changes in the incubation spacing, and the control signal is used to drive the conveying unit to adjust the water output of the nozzle, so that the output water flow parameters of the nozzle and the changes in the incubation spacing maintain a preset corresponding relationship.

[0006] Preferably, the carrying unit includes a mounting frame, a mounting membrane for carrying salmon eggs is provided at the bottom of the mounting frame, and a vibration mechanism for driving the mounting membrane to vibrate is provided below the mounting frame.

[0007] Preferably, the vibration mechanism includes a vibration frame, which is provided with a plurality of guide rods extending in the vertical direction, and a mounting frame is provided with a mounting seat that matches the guide rods. Each guide rod is provided with an elastic member, and the guide rod can be slid along its length direction in the mounting seat, and the mounting membrane is fixedly connected to the vibration frame.

[0008] Preferably, the vibration mechanism also includes a first rotary drive motor, a mounting plate, a fixed shaft and a connecting rod. The mounting plate is rotatably arranged on the side of the mounting frame, the fixed shaft is fixedly connected to the mounting plate, and the two ends of the connecting rod are respectively hinged to the vibration frame and the fixed shaft. The first rotary drive motor is fixedly connected to the mounting frame, and the mounting plate is transmission-connected to the first rotary drive motor.

[0009] Preferably, the delivery unit also includes a water pipe and multiple delivery pipes arranged equidistantly along the length of the hatching pool, and multiple nozzles are equidistantly arranged on the delivery pipes; the delivery pipes are transmission-connected to the control module, and all delivery pipes are connected to the water pipes; the water pipes are provided with a first flow control valve for adjusting the water flow rate and a first solenoid valve for controlling the water flow interruption.

[0010] Preferably, the conveying unit also includes an aeration component electrically connected to the control module, and the control module is configured to, after detecting and obtaining the parameters of the hatching spacing in real time, synchronously generate a control signal for controlling the gas output parameters of the aeration component according to the changes in the hatching spacing of multiple carrier units, so that the gas output parameters of the aeration component maintain a preset corresponding relationship with the changes in the hatching spacing.

[0011] Preferably, the aeration assembly includes an air supply pipe and multiple mounting pipes arranged at the bottom of the hatching tank and arranged along the length of the hatching tank, each mounting pipe is provided with multiple aeration plates, all the mounting pipes are connected to the air supply pipe, and the air supply pipe is provided with a second flow control valve and a second solenoid valve.

[0012] Preferably, the spacing adjustment mechanism comprises a scissor frame that can be extended and retracted along the height direction of the hatching tank, and a plurality of bearing units are equidistantly installed on nodes of the scissor frame.

[0013] Preferably, the spacing adjustment mechanism is further provided with a distance sensor for monitoring the telescopic distance of the scissor frame.

[0014] A salmon hatching method, applied to the above-mentioned multi-layer incubator for salmon, comprises the following steps: S1. Based on the developmental stage of salmon eggs, the corresponding relationship between the hatching spacing and the water output of the nozzle is preset through the control module.

[0015] S2. Control the spacing adjustment mechanism to synchronously drive the multiple carrier units to move, and adjust the hatching spacing between adjacent carrier units to a target value that matches the current development stage.

[0016] S3. The control module obtains the current hatching spacing parameters in real time and generates a control signal based on a preset corresponding relationship.

[0017] S4. The nozzle of the delivery unit is driven by a control signal to adjust the water output so that the output water flow parameters are adjusted synchronously with the hatching interval to adapt to the dissolved oxygen and water flow requirements of the fish eggs at different developmental stages.

[0018] S5. According to the characteristics of different batches of fish eggs or the hatching results monitored in real time, repeat steps S1-S4 to dynamically correct the hatching spacing and the water output of the nozzle to achieve adaptive control of the hatching environment.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention solves the problems of uneven water coverage and the inability of dissolved oxygen supply to match the developmental stage requirements of fish eggs in traditional fixed-spacing incubators by linking the hatching spacing of the supporting units with the water flow parameters of the nozzles. The dynamically adjustable hatching spacing can flexibly adjust the interlayer space according to the different developmental stages of salmon eggs (such as the mild water flow environment required for early anti-adhesion and the stronger water flow exchange required for oxygenation in the middle and late stages). Combined with the synchronous control of the water output of the nozzles, it achieves precise adaptation of the dissolved oxygen environment and water flow intensity, effectively improving the hatching survival rate and developmental uniformity of the fish eggs. In addition, the control module's real-time monitoring and automatic adjustment of the hatching spacing reduces manual intervention, improves the stability and efficiency of the hatching process, and has a compact overall structure.

[0020] 2. By combining a mounting membrane with a vibration mechanism, this invention solves the problem of salmon eggs sticking during incubation due to static accumulation or insufficient natural water flow. This effectively reduces the risk of localized hypoxia and bacterial growth caused by egg clustering, and improves the overall survival rate of the eggs. The vibration also simulates the disturbance of water flow on the eggs in natural waters, promoting microcirculation in the water around the eggs, enhancing dissolved oxygen transfer efficiency, and improving the uniformity of the incubation environment.

[0021] 3. This invention dynamically matches dissolved oxygen supply with hatching spacing through the control module's linked control of the aeration assembly, resolving the issue of fixed aeration parameters in conventional incubators that cannot adapt to spatial variations. When hatching spacing is adjusted based on egg developmental stage or batch differences, the aeration assembly's gas output parameters can be adaptively adjusted simultaneously, ensuring that dissolved oxygen concentrations within each hatching space remain within the optimal range. This prevents both dissolved oxygen shortages caused by increasing hatching spacing and air bubbles impacting the eggs caused by decreasing hatching spacing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a multi-layer incubator for salmon; Figure 2 This is a schematic cross-sectional view of a multi-layer incubator for salmon; Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of a multi-layer incubator for salmon Figure 1 ; Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of a multi-layer incubator for salmon Figure 2 ; Figure 5 This is a schematic diagram of the three-dimensional structure of the hatching tank in a multi-layer incubator for salmon; Figure 6 This is a schematic diagram of the three-dimensional structure of the hatching tank and conveying unit in a multi-layer incubator for salmon; Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the hatching tank and the conveying unit in a multi-layer incubator for salmon; Figure 8 This is a schematic diagram of the three-dimensional structure of the carrying unit, spacing adjustment mechanism and conveying unit in the hatching tank of a multi-layer incubator for salmon; Figure 9 yes Figure 8 A magnified view of the middle part; Figure 10 This is an exploded view of a vibration mechanism on a carrier unit in a multi-layer incubator for salmon; Figure 11 yes Figure 10 Enlarged view of point B in the middle.

[0023] 1. Incubation tank; 11. Carrying unit; 111. Mounting frame; 1111. Mounting seat; 112. Mounting membrane; 113. Vibration mechanism; 1131. Vibration frame; 11311. Guide rod; 11312. Elastic member; 1132. Mounting plate; 11321. Fixed shaft; 11322. Connecting rod; 1133. First rotary drive motor; 12. Spacing adjustment mechanism; 121. Scissor frame; 122. Distance sensor; 13. Conveying unit; 131. Nozzle; 1311. Conveying pipe; 132. Water pipe; 1321. First flow control valve; 1322. First solenoid valve; 133. Aeration assembly; 1331. Gas pipe; 13311. Second flow control valve; 13312. Second solenoid valve; 1332. Mounting pipe; 13321. Aeration plate; 14. Control module. DETAILED DESCRIPTION

[0024] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 6 and Figure 9 The invention discloses a multi-layer incubator for salmon, comprising a hatching tank 1 and a plurality of supporting units 11 disposed within the hatching tank 1. The plurality of supporting units 11 can synchronously reciprocate along the height direction of the hatching tank 1, with an adjustable hatching spacing formed between adjacent two supporting units 11. The hatching tank 1 is further provided with a spacing adjustment mechanism 12 for synchronously driving the plurality of supporting units 11 to adjust the hatching spacing. The plurality of supporting units 11 are all connected to the spacing adjustment mechanism 12. A conveying unit 13 is disposed on the side of the supporting unit 11 within the hatching tank 1. The conveying unit 13 includes a plurality of nozzles 131 for conveying water into the hatching spacing. A control module 14 is disposed on the top of the hatching tank 1. The control module 14 is electrically connected to the spacing adjustment mechanism 12 and the conveying unit 13. The control module 14 is configured to detect and obtain parameters of the hatching spacing in real time. A control signal is generated based on changes in the hatching spacing, the control signal being used to drive the conveying unit 13 to adjust the water output of the nozzle 131, so that the output water flow parameters of the nozzle 131 maintain a preset corresponding relationship with the changes in the hatching spacing.

[0026] A spacing adjustment mechanism 12 drives multiple carrier units 11 to synchronously reciprocate along the height of the hatching tank 1, allowing the hatching spacing between adjacent carrier units 11 to be adjusted. The carrier units 11 are used to carry salmon eggs and adjust the interlayer spacing as the spacing changes. A control module 14 is electrically connected to the spacing adjustment mechanism 12 and the conveying unit 13. It detects and obtains the hatching spacing parameters between the two carrier units 11 in real time. Based on the changes in the hatching spacing, it generates a corresponding control signal. This signal drives the nozzle 131 of the conveying unit 13 to adjust the water output, so that the parameters of the water flow output by the nozzle 131 (such as flow rate and flow velocity) form a preset correspondence with the changes in the hatching spacing. Thus, at different hatching spacings, the adaptive adjustment of the water flow maintains a stable dissolved oxygen environment in the hatching area between the carrier units 11, meeting the dynamic water flow and dissolved oxygen requirements of the salmon eggs during the hatching process.

[0027] By linking the hatching spacing of carrier unit 11 with the water flow parameters of nozzle 131, the problems of uneven water coverage and inability to match dissolved oxygen supply to the developmental stage of the roe in traditional fixed-spacing incubators are resolved. The dynamically adjustable hatching spacing allows for flexible adjustment of interlayer spacing based on the different developmental stages of salmon roe (e.g., the gentle water flow required for early anti-adhesion, and the stronger water flow exchange required for mid- to late-stage oxygenation). Combined with the synchronized control of the water output from nozzle 131, this achieves precise matching of the dissolved oxygen environment and water flow intensity, effectively improving the hatching survival rate and developmental uniformity of the roe. Furthermore, the control module 14's real-time monitoring and automated adjustment of the hatching spacing reduces manual intervention, improves the stability and efficiency of the hatching process, and maintains a compact overall structure.

[0028] like Figures 1 to 3 、 Figure 5 and Figure 8 As shown, the carrying unit 11 includes a mounting frame 111 , a mounting membrane 112 for carrying salmon eggs is provided at the bottom of the mounting frame 111 , and a vibration mechanism 113 for driving the mounting membrane 112 to vibrate is provided below the mounting frame 111 .

[0029] The mounting frame 111 of the supporting unit 11 serves as the main structure, and the mounting membrane 112 at its bottom is used to directly support the salmon eggs. When the vibration mechanism 113 below the mounting frame 111 is activated, it drives the mounting membrane 112 to vibrate, for example, through a motor or eccentric wheel. This vibration disperses salmon eggs that may have otherwise aggregated or adhered due to contact or water impact, preventing accumulation of salmon eggs that could lead to localized oxygen depletion or physical damage. It also ensures a more even distribution of the eggs on the mounting membrane 112, ensuring that each salmon egg is fully exposed to the dissolved oxygen and nutrients in the surrounding water, thereby improving the hatching survival rate of the salmon eggs.

[0030] By combining the mounting membrane 112 with the vibration mechanism 113, the problem of salmon eggs sticking together during the incubation process due to static accumulation or insufficient natural water flow impact is solved, effectively reducing the risk of local hypoxia and bacterial growth caused by the aggregation of egg groups, and improving the overall survival rate of fish eggs. The vibration effect can also simulate the disturbing effect of water flow on fish eggs in natural waters, promote microcirculation of the water around the fish eggs, enhance the efficiency of dissolved oxygen transfer, and improve the uniformity of the incubation environment. The setting of the vibration mechanism 113 provides an active and controllable environmental regulation method for the salmon egg incubation process, which is more adaptable and reliable than the traditional incubation method that passively relies on water flow, and improves the quality and efficiency of salmon incubation as a whole.

[0031] like Figures 2 to 5 、 Figure 8 、 Figure 10 and Figure 11 As shown: the vibration mechanism 113 includes a vibration frame 1131, on which a plurality of guide rods 11311 extending in a vertical direction are provided, and a mounting seat 1111 matching the guide rods 11311 is provided on the mounting frame 111, and each guide rod 11311 is provided with an elastic member 11312, and the guide rod 11311 can be slidably arranged in the mounting seat 1111 along its length direction, and the mounting membrane 112 is fixedly connected to the vibration frame 1131.

[0032] When the vibration mechanism 113 is activated, the guide rods 11311 on the vibration frame 1131 move synchronously with the vibration frame 1131 and slide within the mounting base 1111 of the mounting frame 111, ensuring that the motion trajectory of the vibration frame 1131 is stable and linear. Because each guide rod 11311 is provided with an elastic member 11312, when the vibration frame 1131 moves upward or downward, the elastic member 11312 will produce compression or tension deformation due to the relative displacement between the guide rod 11311 and the mounting base 1111, thereby storing elastic potential energy. The provision of the elastic member 11312 can release the stored potential energy during the movement of the vibration frame 1131, providing auxiliary driving force for the reverse movement of the vibration frame 1131 and simultaneously buffering the impact force between the vibration frame 1131 and the mounting frame 111. This storage and release process of elastic potential energy makes the reciprocating motion of the vibration frame 1131 more stable and continuous, avoiding sudden vibration changes caused by rigid collisions. The mounting membrane 112 is fixedly connected to the vibration frame 1131, so it can continuously and stably receive the vibration transmission from the vibration frame 1131, so that the salmon eggs on the mounting membrane 112 are always in a mild and uniform vibration environment, effectively preventing the salmon eggs from sticking and accumulating.

[0033] like Figures 2 to 5 、 Figure 8 、 Figure 10 and Figure 11As shown: the vibration mechanism 113 also includes a first rotation drive motor 1133, a mounting plate 1132, a fixed shaft 11321 and a connecting rod 11322. The mounting plate 1132 is rotatably arranged on the side of the mounting frame 111, the fixed shaft 11321 is fixedly connected to the mounting plate 1132, and the two ends of the connecting rod 1132 are respectively hinged to the vibration frame 1131 and the fixed shaft 11321. The first rotation drive motor 1133 is fixedly connected to the mounting frame 111, and the mounting plate 1132 is transmission-connected to the first rotation drive motor 1133.

[0034] When first rotary drive motor 1133 is activated, its output shaft drives mounting plate 1132, which is in transmission connection therewith, and drives mounting plate 1132 to perform circular motion around its own rotation axis and alongside mounting frame 111. Because fixed shaft 11321 is fixedly connected to mounting plate 1132 and offset from its rotational center, when mounting plate 1132 rotates, fixed shaft 11321 also performs synchronous circular motion. The circular motion of fixed shaft 11321 drives the motion of connecting rod 11322. Since the two ends of connecting rod 11322 are hingedly connected to vibrating frame 1131 and fixed shaft 11321, respectively, connecting rod 11322 can exert a reciprocating push-pull effect on vibrating frame 1131. Since the guide rod 11311 on the vibration frame 1131 can slide in the mounting seat 1111 of the mounting frame 111, the vibration frame 1131 is provided with a motion constraint in the height direction. Therefore, under the push-pull action of the connecting rod 11322, the vibration frame 1131 can only slide back and forth in a straight line in the height direction of the mounting frame 111. The mounting membrane 112 is fixedly connected to the vibration frame 1131, so that reciprocating vibration in the height direction is obtained synchronously. By controlling the rotation speed of the first rotary drive motor 1133, the rotation speed of the mounting plate 1132 can be adjusted, thereby changing the circumferential motion speed of the fixed shaft 11321, and finally realizing the control of the reciprocating motion frequency of the vibration frame 1131 to adapt to the vibration intensity requirements of salmon eggs at different hatching stages.

[0035] By varying the motor speed, the vibration frequency of the mounting membrane 112 can be flexibly adjusted. This allows for precise matching of the required vibration parameters to the different developmental stages of the salmon eggs (e.g., gentle vibration is required to prevent adhesion in the early stages of incubation, while moderate vibration is required to promote dissolved oxygen in the middle and late stages), thus improving the controllability and adaptability of the incubation process. Furthermore, the articulated structure allows for a certain degree of angular variation between components during movement, effectively buffering the impact of motion transmission, reducing mechanical wear, and extending the service life of the equipment. It also reduces the impact of noise and vibration transmitted to the overall structure of the incubation tank 1 during operation, creating a more stable and quiet incubation environment for the salmon eggs, helping to improve hatching success rates and fry quality.

[0036] like Figures 1 to 4 、 Figures 6 to 9 As shown: the delivery unit 13 also includes a water pipe 132 and multiple delivery pipes 1311 arranged equidistantly along the length direction of the hatching tank 1, and multiple nozzles 131 are equidistantly arranged on the delivery pipe 1311; the delivery pipe 1311 is transmission-connected to the control module 14, and all delivery pipes 1311 are connected to the water pipe 132; the water pipe 132 is provided with a first flow control valve 1321 for adjusting the water flow rate and a first solenoid valve 1322 for controlling the water flow interruption.

[0037] The water pipe 132 serves as the main waterway, delivering water to each delivery pipe 1311. After entering the delivery pipe 1311 through the water pipe 132, the water is evenly sprayed through the nozzles 131 into the hatching spacing of the carrier unit 11. The first flow control valve 1321 precisely adjusts the total water flow in the water pipe 132, thereby controlling the water output from each nozzle 131. The first solenoid valve 1322 controls the water flow, ensuring rapid startup and shutdown of the water supply when needed. Through the coordinated control of the control module 14, the delivery unit 13 dynamically adjusts the water flow parameters of the nozzles 131 based on the actual hatching spacing, ensuring uniform water coverage of the hatching area and maintaining the target dissolved oxygen environment.

[0038] The delivery unit 13 utilizes a combination of a water pipe 132 and multiple equally spaced delivery pipes 1311, combined with the equally spaced arrangement of the nozzles 131. This ensures uniform water coverage within the incubation tank 1, avoiding the problems of localized excessive water flow or uneven dissolved oxygenation caused by traditional single-point water supply. The arrangement of the first flow control valve 1321 and the first solenoid valve 1322 provides precise control for adjusting water flow parameters. The first flow control valve 1321 enables continuous adjustment of the water flow, meeting the differentiated requirements for water flow intensity at different incubation stages (e.g., gentle water flow in the early stages to prevent adhesion, stronger water flow in the middle and late stages to enhance oxygenation). The first solenoid valve 1322 provides a rapid response to water flow interruptions, and in conjunction with the automated control of the control module 14, enhances the incubation system's real-time adjustment capabilities. In addition, the transmission connection between the delivery pipe 1311 and the control module 14 enables the water flow parameters to be linked in real time with the changes in the hatching spacing, thereby improving the stability and uniformity of the hatching environment, and providing salmon eggs with water flow and dissolved oxygen conditions that are closer to natural waters, which helps to improve the hatching survival rate and fry quality.

[0039] like Figures 1 to 4 、 Figures 6 to 9 As shown, the conveying unit 13 also includes an aeration assembly 133 electrically connected to the control module 14, and the control module 14 is configured to, after real-time detection and acquisition of the parameters of the hatching spacing, synchronously generate a control signal for controlling the gas output parameters of the aeration assembly 133 according to the changes in the hatching spacing of the multiple carrier units 11, so that the gas output parameters of the aeration assembly 133 maintain a preset corresponding relationship with the changes in the hatching spacing.

[0040] The control module 14, through an electrical connection with the spacing adjustment mechanism 12, obtains real-time information about the hatching spacing. Based on pre-set control logic, when the hatching spacing changes, the control module 14 synchronously generates a control signal for the aeration assembly 133. This signal is transmitted to the aeration assembly 133's actuator, which adjusts gas output parameters (such as aeration flow rate and bubble density) so that the gas output of the aeration assembly 133 corresponds to the change in hatching spacing. For example, when the hatching spacing increases, the control module 14 controls the aeration assembly 133 to increase gas output to ensure a sufficient dissolved oxygen concentration within the expanded hatching space. Conversely, when the spacing decreases, the control module 14 appropriately reduces gas output to avoid excess dissolved oxygen or excessive water flow disturbance. Through this interlocking control mechanism, the aeration assembly 133 works synergistically with the spacing adjustment and water flow delivery systems of the carrier unit 11 to maintain a stable dissolved oxygen environment within the hatching spacing.

[0041] The control module 14's linked control of the aeration assembly 133 dynamically matches dissolved oxygen supply with hatching spacing, resolving the issue of fixed aeration parameters in traditional incubators that cannot adapt to spatial variations. When the hatching spacing is adjusted due to the egg development stage (e.g., more oxygen is required in the middle and late stages) or batch differences, the gas output parameters of the aeration assembly 133 can be synchronously and adaptively adjusted to ensure that the dissolved oxygen concentration in each hatching space remains within the optimal range. This not only avoids dissolved oxygen deficiency caused by increasing the hatching spacing, but also prevents bubbles from impacting the eggs caused by decreasing the hatching spacing. This approach improves the uniformity and controllability of the hatching environment, providing salmon eggs with dissolved oxygen conditions that better meet their physiological needs. This can effectively reduce the risk of hypoxia and improve hatching survival rates, especially during the middle and late stages of embryonic development, when oxygen demand surges.

[0042] like Figures 1 to 4 、 Figures 6 to 9 As shown: the aeration assembly 133 includes an air pipe 1331 and multiple installation pipes 1332 arranged at the bottom of the hatching tank 1 and arranged along the length direction of the hatching tank 1, each installation pipe 1332 is provided with multiple aeration plates 13321, all the installation pipes 1332 are connected to the air pipe 1331, and the air pipe 1331 is provided with a second flow control valve 13311 and a second solenoid valve 13312.

[0043] The gas supply pipe 1331 serves as the main air path, delivering gas to the various installation pipes 1332. After being distributed through the gas supply pipe 1331 to the installation pipes 1332, the gas is evenly released into the water of the hatching tank 1 in the form of bubbles through the aeration disc 13321. The second flow control valve 13311 precisely adjusts the total gas flow in the gas supply pipe 1331, thereby controlling the aeration intensity (e.g., bubble size and density) of the aeration disc 13321. The second solenoid valve 13312 controls the flow of gas, ensuring that the aeration assembly 133 starts and stops as needed. The control module 14 increases or decreases gas output by adjusting the opening of the second flow control valve 13311, allowing bubbles to enter the hatching space to control dissolved oxygen and dynamically match aeration parameters with hatching spacing. It ensures that the bubbles are evenly diffused at the bottom of the hatching pool 1 and in the water body, avoiding the dissolved oxygen blind spot or local oversaturation problem caused by traditional single-point aeration, so that the bubbles can fully cover the hatching spacing area of the carrier unit 11 during the rising process, thereby enhancing the dissolved oxygen exchange efficiency between the water body and the fish eggs. Especially in the three-dimensional hatching scenario of multi-layer carrier units 11, it effectively solves the problem of dissolved oxygen uniformity in the upper and lower hatching spaces.

[0044] like Figures 1 to 5 、 Figures 8 to 10 As shown, the spacing adjustment mechanism 12 includes a scissor frame 121 that can be extended and retracted along the height direction of the hatching tank 1, and multiple carrying units 11 are equidistantly installed on the nodes of the scissor frame 121.

[0045] When the hatching spacing needs to be adjusted, the scissor frame 121 is driven to expand or retract. Because multiple load-bearing units 11 are equidistantly mounted at the nodes of the scissor frame 121, the nodes of the scissor frame 121 move along the height of the hatching tank 1 during expansion, driving the load-bearing units 11 to move synchronously, thereby adjusting the vertical distance between two adjacent load-bearing units 11 and adjusting the hatching spacing. By controlling the degree of expansion or contraction of the scissor frame 121, the hatching spacing between two adjacent load-bearing units 11 can be precisely adjusted to meet the space and water flow requirements of salmon eggs at different developmental stages.

[0046] A scissor frame 121 is used as the core component of the spacing adjustment mechanism 12. The structural characteristics of its equidistant node distribution ensure that multiple carrying units 11 always maintain equidistant and synchronous movement during the adjustment process, effectively avoiding the uneven spacing problem that may be caused by traditional adjustment methods, and providing a uniform and consistent hatching environment for salmon eggs.

[0047] A guide cable is also provided on the edge of the carrying unit 11, one end of the guide cable is fixedly connected to the top of the incubation pool 1, and the top of the incubation pool 1 may be provided with a device for reeling in the cable, and the other end is connected to the edge of the carrying unit 11; the edge of the carrying unit 11 is provided with a limiting hole that cooperates with the guide cable, and the guide cable forms a vertical guiding constraint on the lifting and lowering movement of the carrying unit 11 through the limiting hole, so as to ensure that multiple carrying units 11 are driven by the scissors frame 121 and are lifted and lowered stably and synchronously along the height direction of the incubation pool 1, avoiding tilting or jamming due to uneven force or movement deviation.

[0048] like Figures 1 to 5 、 Figures 8 to 10 As shown, the spacing adjustment mechanism 12 is further provided with a distance sensor 122 for monitoring the telescopic distance of the scissor frame 121 .

[0049] When the spacing adjustment mechanism 12 drives the carrier unit 11 to rise and fall by expanding or contracting the scissor frame 121, the distance sensor 122 provided on the spacing adjustment mechanism 12 monitors the telescopic distance of the scissor frame 121 in real time. The distance sensor 122 converts the physical signal detected in real time into an electrical signal and transmits it to the control module 14. The control module 14 calculates the current actual hatching distance based on the correspondence between the preset telescopic distance of the scissor frame 121 and the hatching distance, and compares it with the target distance. If there is a deviation, the control module 14 sends an adjustment instruction to the drive device, and by fine-tuning the degree of telescopic extension of the scissor frame 121, the hatching distance accurately reaches the preset value, ensuring the accuracy and stability of the hatching distance during the lifting and lowering of the carrier unit 11. The control module 14 can automatically and precisely adjust according to the needs of different developmental stages of salmon eggs, reducing the cost of manual intervention while ensuring that the spacing between each carrier unit 11 is uniform and consistent, avoiding differences in water flow and dissolved oxygen distribution caused by uneven spacing.

[0050] Preferably, the scissors frame 121 is composed of multiple connecting rod assemblies, each connecting rod assembly includes two connecting rods 11322 hinged to each other in the middle, and the two connecting rods 11322 located at the top of the scissors frame 121, one end of the connecting rod 11322 is hinged to the top of the incubation tank 1, and the end of the other connecting rod 11322 is provided with a slider hinged to it, and the slider slides with the sliding track on the inner wall of the incubation tank 1; the distance sensor 122 is provided on the slider, which is used to monitor the displacement of the slider along the sliding track in real time, and convert the telescopic distance of the scissors frame 121 according to the displacement, thereby obtaining the incubation spacing between adjacent carrying units 11.

[0051] The slider is driven by a motor-driven screw. In this embodiment, the power output of the control module 14 uses a single drive motor to synchronously control the first flow control valve 1321, the second flow control valve 13311, and the screw. Specifically, the output shaft of the drive motor is connected to each controlled component via a transmission mechanism, such as a gear set or a synchronous belt. When the motor rotates, the screw rotates to adjust the movement of the slider, which is threadedly engaged with the slider, thereby driving the hatch spacing between the multiple carrier units 11. Furthermore, the opening of the first and second flow control valves 1321, 13311 is synchronously adjusted via a gear transmission or cam mechanism. The first and second flow control valves 1321, 13311 are preferably ball valves. When the slider moves, the transmission components linked to the valves of the first and second flow control valves 1321, 13311 synchronously change the valve port diameters according to a preset ratio, so that the water flow in the water pipe 132 and the gas flow in the gas pipe 1331 have a linear or nonlinear relationship with the hatch spacing. Through a single power source, deep coupling of mechanical regulation and fluid control is achieved, ensuring that the hatching spacing, water flow parameters and aeration parameters change synchronously under the coordination of the control module 14. This not only simplifies the system structure and reduces the synchronization error of multi-motor control, but also improves the consistency of the response of each execution component, so that the entire hatching system always maintains an accurate parameter matching relationship during the dynamic adjustment process.

[0052] like Figures 1 to 6 As shown: A salmon hatching method, applied to the above-mentioned multi-layer incubator for salmon, includes the following steps: S1. According to the development stage of the salmon eggs, the control module 14 presets the corresponding relationship between the hatching distance and the water output of the nozzle 131.

[0053] S2. Control the spacing adjustment mechanism 12 to synchronously drive the multiple carrying units 11 to move, and adjust the hatching spacing between adjacent carrying units 11 to a target value that matches the current development stage.

[0054] S3. The control module 14 obtains the current hatching distance parameters in real time and generates a control signal based on a preset corresponding relationship.

[0055] S4. The nozzle 131 of the delivery unit 13 is driven by a control signal to adjust the water output so that the output water flow parameters are synchronously adjusted with the hatching interval to adapt to the dissolved oxygen and water flow requirements of the fish eggs at different developmental stages.

[0056] S5. According to the characteristics of different batches of fish eggs or the hatching effect monitored in real time, repeat steps S1-S4 to dynamically correct the hatching spacing and the water output of the nozzle 131 to achieve adaptive control of the hatching environment.

[0057] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A multi-layer incubator for salmon, comprising an incubation tank and a plurality of supporting units arranged in the incubation tank; characterized in that: Multiple carrying units can synchronously move back and forth along the height direction of the hatching tank, and an adjustable hatching distance is formed between two adjacent carrying units; The hatching tank is also provided with a spacing adjustment mechanism for synchronously driving multiple carrying units to adjust the hatching spacing; The plurality of bearing units are all connected to the spacing adjustment mechanism; A conveying unit is provided on the side of the carrying unit in the hatching pool, and the conveying unit includes a plurality of nozzles for conveying water into the hatching interval; A control module is provided on the top of the incubation pool. The control module is electrically connected to the spacing adjustment mechanism and the conveying unit. The control module is configured to detect and obtain the parameters of the incubation spacing in real time; generate a control signal according to the change of the incubation spacing, and the control signal is used to drive the conveying unit to adjust the water output of the nozzle; so that the output water flow parameters of the nozzle and the change of the incubation spacing maintain a preset corresponding relationship.

2. A multi-layer incubator for salmon according to claim 1, characterized in that: The carrying unit includes a mounting frame, a mounting film for carrying salmon eggs is provided at the bottom of the mounting frame, and a vibration mechanism for driving the mounting film to vibrate is provided below the mounting frame.

3. A multi-layer incubator for salmon according to claim 2, characterized in that: The vibration mechanism includes a vibration frame, which is provided with a plurality of guide rods extending in the vertical direction, and a mounting frame is provided with a mounting seat that matches the guide rods. Each guide rod is provided with an elastic member, and the guide rod can be slid along its length direction in the mounting seat, and the mounting membrane is fixedly connected to the vibration frame.

4. A multi-layer incubator for salmon according to claim 3, characterized in that: The vibration mechanism also includes a first rotary drive motor, a mounting plate, a fixed shaft and a connecting rod. The mounting plate is rotatably arranged on the side of the mounting frame. The fixed shaft is fixedly connected to the mounting plate. The two ends of the connecting rod are respectively hinged to the vibration frame and the fixed shaft. The first rotary drive motor is fixedly connected to the mounting frame, and the mounting plate is transmission-connected to the first rotary drive motor.

5. The multi-layer incubator for salmon according to claim 1, characterized in that: The delivery unit also includes a water pipe and multiple delivery pipes arranged equidistantly along the length of the hatching pool, and multiple nozzles are equidistantly arranged on the delivery pipes; the delivery pipes are transmission-connected to the control module, and all delivery pipes are connected to the water pipes; the water pipes are provided with a first flow control valve for adjusting the water flow rate and a first solenoid valve for controlling the water flow interruption.

6. The multi-layer incubator for salmon according to claim 1, characterized in that: The conveying unit also includes an aeration component electrically connected to the control module, and the control module is configured to, after real-time detection and acquisition of the parameters of the hatching spacing, synchronously generate a control signal for controlling the gas output parameters of the aeration component according to the changes in the hatching spacing of the multiple carrying units, so that the gas output parameters of the aeration component maintain a preset corresponding relationship with the changes in the hatching spacing.

7. A multi-layer incubator for salmon according to claim 6, characterized in that: The aeration assembly includes an air pipe and multiple mounting pipes arranged at the bottom of the hatching tank and arranged along the length of the hatching tank. Each mounting pipe is provided with multiple aeration plates. All mounting pipes are connected to the air pipe, and the air pipe is provided with a second flow control valve and a second solenoid valve.

8. The multi-layer incubator for salmon according to claim 1, characterized in that: The spacing adjustment mechanism comprises a scissor frame which can be extended and retracted along the height direction of the hatching pool, and a plurality of bearing units are equidistantly installed on nodes of the scissor frame.

9. The multi-layer incubator for salmon according to claim 8, characterized in that: The spacing adjustment mechanism is also provided with a distance sensor for monitoring the telescopic distance of the scissor frame.

10. A salmon hatching method, applied to the multi-layer incubator for salmon according to any one of claims 1 to 9, characterized in that: The following steps are included: S1. Preset the corresponding relationship between the hatching spacing and the water output of the nozzle through the control module according to the development stage of the salmon eggs; S2. Controlling the spacing adjustment mechanism to synchronously drive the multiple carrier units to move, and adjusting the hatching spacing between adjacent carrier units to a target value that matches the current development stage; S3, the control module obtains the current hatching spacing parameters in real time and generates a control signal based on a preset corresponding relationship; S4, driving the nozzle of the delivery unit through the control signal to adjust the water output, so that the output water flow parameters are synchronously adjusted with the change of the hatching interval to adapt to the dissolved oxygen and water flow requirements of the fish eggs at different developmental stages; S5. According to the characteristics of different batches of fish eggs or the hatching results monitored in real time, repeat steps S1-S4 to dynamically correct the hatching spacing and the water output of the nozzle to achieve adaptive control of the hatching environment.

Images