Epinephelus roe hatching device and hatching method thereof

Abstract

The invention discloses a grouper roe hatching device and a hatching method thereof, belongs to the technical field of grouper roe hatching, and aims to solve the problems that a traditional device is low in parameter regulation and control precision, roes are easily damaged by water flow, the illumination adaptability is poor and the labor cost is high. The device comprises a breeding box with a detachable roe isolation box, a water flow circulation system with an inclined flow distribution plate, an intelligent temperature control detection system integrating a constant temperature assembly and multiple sensors, a servo-driven adjustable lifting light supplementing mechanism and a nanometer refining disc oxygenation assembly. According to the method, incubation is completed through parameter presetting, dynamic temperature, oxygen and light regulation and real-time monitoring feedback. Water quality and temperature can be accurately controlled, roe damage is avoided, illumination requirements of different incubation stages are met, manual dependence is reduced, and the larva survival rate and the large-scale breeding efficiency are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grouper egg hatching, in particular to a grouper egg hatching device and a hatching method thereof. BACKGROUND

[0002] As a high-quality edible fish with low fat and high protein, grouper has specific requirements for water temperature, salinity and other conditions in its natural habitat. The suitable temperature range is 15-34℃, and the optimum water temperature is 22-28℃. Grouper prefers to live in rocky and sandy seabed areas near coastal islands. Natural reproduction is greatly limited by the environment, and it is difficult to meet the demand for seedlings in large-scale breeding. Therefore, artificial hatching technology has become a key support for the development of grouper industry.

[0003] However, there are still many defects in the current artificial hatching technology of grouper eggs that need to be solved: first, the traditional hatching device has very low monitoring and control precision for key water quality parameters such as water temperature, pH value and dissolved oxygen. It is easy to cause problems such as large water temperature fluctuation, insufficient water dissolved oxygen or imbalance of acid-base value, which directly leads to the development stagnation of fish eggs, high deformity rate and serious impact on the survival rate of larvae; second, the water flow system design is unreasonable, the water inlet end has high impact strength, which easily causes damage or accumulation of fish eggs, and the water circulation and filtration efficiency is poor, so that the impurities such as leftover food and egg membranes in the water body are difficult to be effectively removed, and harmful microorganisms are easily bred, which causes diseases; third, the light regulation lacks pertinence, and the light height and time cannot be dynamically adjusted according to the light sensitivity demand of different hatching stages such as fish egg period and larva period, which is difficult to adapt to the light energy demand in the development process of grouper eggs; fourth, the existing device lacks integrated real-time monitoring and remote control function, relies on artificial regular inspection, not only has parameter feedback lag problem, but also needs to invest a lot of labor cost, which seriously restricts the stability, standardization and large-scale breeding efficiency of grouper egg hatching, and cannot meet the demand of high-quality development of industry. SUMMARY

[0004] The purpose of the present application is to provide a grouper egg hatching device and a hatching method thereof to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following solutions: A grouper egg hatching device, comprising: A breeding box, a fish egg isolation box is detachably arranged inside the breeding box, and water permeable holes are formed in the peripheral wall and the bottom of the fish egg isolation box. A water flow circulation system comprises an inflow pipe assembly and a backwater pipe, the inflow pipe assembly is arranged above the right side of the breeding box, the inflow pipe assembly comprises an inflow pipe body, a connecting frame and a flow distribution plate, the connecting frame is fixedly sleeved on the outer wall of the water outlet of the inflow pipe body, and the flow distribution plate is connected to the connecting frame and located below the water outlet of the inflow pipe body; the backwater pipe is arranged at the bottom of the breeding box and communicates with the breeding box, and the backwater pipe communicates with an external water treatment device; An intelligent temperature control detection system comprises a constant temperature assembly, a pH value monitoring instrument, a dissolved oxygen sensor, a temperature sensor, a water flow detection control valve and a main control panel, the constant temperature assembly is arranged on the inner wall of the breeding box, the pH value monitoring instrument, the dissolved oxygen sensor and the temperature sensor are arranged in the breeding box, the water flow detection control valve is installed on the inflow pipe body, the main control panel is arranged on the outer wall of the breeding box, and the pH value monitoring instrument, the dissolved oxygen sensor, the temperature sensor and the water flow detection control valve are electrically connected with the main control panel; An adjustable lifting mechanism is fixed to the outer wall of the breeding box, and a light supplementing lamp is installed at the top of the adjustable lifting mechanism; A base is fixed to the bottom of the breeding box, and an anti-skid pad is arranged at the bottom of the base.

[0006] Further, the constant temperature assembly comprises a constant temperature heating pipe and an isolation cover, a groove is formed in the inner wall of the breeding box, the constant temperature heating pipe is arranged in the groove, and the isolation cover is sleeved on the groove.

[0007] Further, the adjustable lifting mechanism comprises a connecting box, a servo motor, a transmission rod, a transmission gear, an L-shaped movable tooth plate and a guide rod. The connecting box is fixed to the outer wall of the breeding box, a cavity is formed in the connecting box, the servo motor is arranged in the cavity, two bearings are fixed in the cavity, the transmission rod penetrates through the inner walls of the two bearings, and one end of the transmission rod is connected with the output end of the servo motor. The transmission gear is sleeved on the transmission rod, the L-shaped movable tooth plate is engaged with the transmission gear, and the guide rod is fixedly connected with the L-shaped movable tooth plate and slidably connected with the inner wall of the connecting box. The guide rod and the L-shaped movable tooth plate both penetrate out of the connecting box. The light supplementing lamp is fixed to the inner side of the top of the L-shaped movable tooth plate.

[0008] Further, the flow distribution plate is arranged in an inclined manner, and a plurality of flow distribution holes are formed in the surface of the flow distribution plate.

[0009] Further, an oxygen increasing assembly is further included, the oxygen increasing assembly comprises an oxygen pump, two nanometer refining discs, a main air pipe, a three-way connecting valve and two branch air pipes, the oxygen pump is fixed to the outer wall of the breeding box, and the two nanometer refining discs are fixed to the inner bottom wall of the breeding box; one end of the main air pipe is connected with the output end of the oxygen pump, and the other end is connected with the input end of the three-way connecting valve; one end of each of the two branch air pipes is connected with two output ends of the three-way connecting valve respectively, and the other end of each of the two branch air pipes is connected with the two nanometer refining discs respectively.

[0010] Further, an ultraviolet disinfection lamp is arranged at the top of the inner side of the breeding box, and the ultraviolet disinfection lamp is electrically connected with the main control panel.

[0011] The application further provides a grouper egg hatching method, and the grouper egg hatching device is used, and the method comprises the following steps: S1, device inspection and parameter presetting: check the connection sealing performance of the breeding box, the inflow pipe assembly and the backwater pipe, ensure that the anti-skid pad of the base is attached to the placement surface, preset the parameters through the main control panel: water temperature 24-28 DEG C, pH value 7.5-8.5, dissolved oxygen value 6-8 mg / L, set the initial height of the adjustable lifting mechanism, so that the light supplement lamp is 30-40 cm away from the water surface; S2, fish egg pretreatment and putting: select undamaged grouper eggs, soak the undamaged grouper eggs in 3‰ saline solution for 5 minutes for disinfection, then drain the water, and evenly put the fish eggs into the fish egg isolation box; S3, water circulation system starts: open the inflow pipe assembly, and the water flows into the breeding box through the inflow pipe body and the shunt hole of the shunt plate; simultaneously start the backwater pipe, so that the water body is circulated through the external water treatment device, the water flow detection control valve monitors the flow rate and feeds back to the main control panel; S4, temperature control and oxygen increasing system starts: start the intelligent temperature control detection system, the constant temperature heating pipe heats the water body through the isolation cover, the temperature sensor monitors the water temperature and adjusts the start and stop of the heating pipe through the main control panel; open the oxygen increasing assembly, and the oxygen pump supplies oxygen to the nanometer refining disc through the main air pipe, the three-way connecting valve and the branch air pipe; S5, light supplement lamp control: start the light supplement lamp, and the initial daily light illumination is 8 hours; the light supplement lamp is kept 30-40 cm away from the water surface during the fish egg period, and is adjusted to 20-25 cm during the juvenile fish period; S6, real-time monitoring and data feedback: the pH value monitoring instrument, the dissolved oxygen sensor and the temperature sensor transmit data to the main control panel, abnormal parameters trigger sound and light alarm, and the main control panel sends data to the mobile terminal; S7, dynamic adjustment in the hatching stage: the water temperature is gradually increased to 26-27 DEG C from the third day of the fish egg hatching; when the dissolved oxygen value is lower than 6 mg / L, the power of the oxygen increasing assembly is increased; when the water flow rate is abnormal, the inflow water flow detection control valve is adjusted, so that the water flow rate is stabilized at 0.5-1 L / min; S8, after the young fish hatched, the water temperature was kept at 27-28 DEG C, the light supplement lamp was 20-25 cm from the water surface, and the light was on for 12 hours a day; the state of the young fish was observed and the survival rate was recorded, and the opening feed was fed; S9, after the young fish hatched, the water temperature was kept at 27-28 DEG C, the light supplement lamp was 20-25 cm from the water surface, and the light was on for 12 hours a day; the state of the young fish was observed and the survival rate was recorded, and the opening feed was fed;

[0012] Further, in step S5, the light intensity of the light supplement lamp during the egg stage is 1000-1500 lux, and the light intensity during the young fish stage is 2000-2500 lux.

[0013] Further, in step S7, the oxygen pump power of the oxygen increasing assembly is automatically increased by the main control panel.

[0014] Further, in step S4, the heating power of the constant temperature heating pipe is stepwise adjusted by the main control panel according to the monitoring data of the temperature sensor.

[0015] According to the above technical scheme, compared with the prior art, the beneficial effects of the present application are as follows: The present application constructs a "monitoring-feedback-regulation" closed loop through an intelligent temperature control detection system, and the constant temperature assembly is designed with a slotted built-in constant temperature heating pipe cooperating with an isolation cover, which can realize stepwise heating according to the temperature sensor data through the main control panel, avoid sudden rise and fall of water temperature, and prevent the heating pipe from directly contacting the organism and causing burns. At the same time, the pH value monitoring instrument and the dissolved oxygen sensor collect water quality data in real time, trigger sound and light alarm and linkage regulation when abnormal, and accurately maintain the suitable environment of water temperature 24-28 DEG C, pH value 7.5-8.5 and dissolved oxygen value 6-8 mg / L, completely solving the problems of large parameter fluctuation, fish egg development stagnation or high deformity rate of traditional devices.

[0016] In the water flow circulation system, the inclined shunt plate of the inflow pipe assembly is provided with a shunt hole, which can disperse the water into soft stream to avoid impact damage to the fish eggs or cause accumulation; the backwater pipe is connected with the external water treatment device to realize continuous filtration of the water body, reduce the accumulation of impurities such as residual feed and egg membranes, and reduce the risk of harmful microorganism breeding. In addition, the oxygen increasing assembly is connected to the two nanometer refinement discs through a three-way connection valve to supply oxygen, so that the oxygen is uniformly diffused into the water body, ensuring stable dissolved oxygen and further adapting to the development needs of grouper eggs.

[0017] The adjustable lifting mechanism is driven by a servo motor to drive a transmission rod, a transmission gear and an L-shaped movable tooth plate, and realizes stable lifting by cooperating with a guide rod, can accurately adjust the height of the light supplement lamp according to the hatching stage, and can adjust the light duration through the main control panel, solving the defects that the light regulation of traditional devices lacks pertinence and cannot adapt to the light sensitivity requirements, promoting the normal development of fish eggs.

[0018] The master control panel can send the monitoring data to a mobile terminal in real time, realize remote monitoring and abnormal early warning, and solve the problems of parameter feedback lag and high labor cost without manual regular inspection; the egg isolation box is detachable, facilitating cleaning of residual egg membranes; the ultraviolet disinfection lamp on the inside top of the breeding box can quickly disinfect after hatching is completed, improving the reuse efficiency of the device, and the overall structure has high integration and is convenient to operate, can stably support large-scale hatching of grouper eggs, and meets the needs of high-quality development of the industry. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the grouper egg hatching device in the embodiment of the present application. Figure 2 It is a sectional view of the grouper egg hatching device in the embodiment of the present application. Figure 3 It is a sectional view of the grouper egg hatching device in the embodiment of the present application. Figure 2 It is a partial enlarged view of A in the figure. Figure 4 It is a schematic diagram of the structure of the egg isolation box in the embodiment of the present application. Figure 5 It is a schematic diagram of the structure of the oxygen increasing assembly in the embodiment of the present application. Figure 6 It is a partial enlarged view of B in the figure. Figure 2 It is a partial enlarged view of C in the figure. Figure 7 Figure 2 It is a partial enlarged view of C in the figure. Figure 8 It is a top view sectional view of the adjustable lifting mechanism in the embodiment of the present application.

[0021] Explanation of reference signs: ​1, breeding box; 2, egg isolation box; 3, constant temperature assembly; 301, slot; 302, constant temperature heating pipe; 303, isolation cover; 4, inflow pipe assembly; 401, inflow pipe body; 402, connecting frame; 403, flow distribution plate; 5, backwater pipe; 6, adjustable lifting mechanism; 601, connecting box; 602, cavity; 603, bearing; 604, servo motor; 605, transmission rod; 606, transmission gear; 607, L-shaped movable tooth plate; 608, guide rod; 7, light supplementing lamp; 8, pH value monitoring instrument; 9, dissolved oxygen sensor, 10, temperature sensor, 11, water flow detection control valve; 12, main control panel; 13, oxygenation assembly; 1301, oxygen pump; 1302, nano refining disc; 1303, main air pipe; 1304, three-way connection valve; 1305, branch air pipe; 14, base; 15, anti-skid pad. DETAILED DESCRIPTION

[0022] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0023] Example 1

[0024] The present embodiment provides a grouper egg hatching device, which aims to solve the problems of low parameter regulation precision, water flow damage to fish eggs, poor light adaptability and high artificial dependence of traditional hatching devices. The device comprises a breeding box 1, a water flow circulation system, an intelligent temperature control detection system, an adjustable lifting mechanism 6 and a base 14.

[0025] Specifically, as shown in Figure 1 , Figure 2 , Figure 4 , the breeding box 1 is a rectangular box, and an egg isolation box 2 is arranged inside the breeding box 1. The egg isolation box 2 is made of food-grade plastic material, and the peripheral wall and the bottom thereof are provided with water-permeable holes with a diameter of 1-2 mm. The water-permeable holes not only ensure water circulation, but also prevent fish eggs from leaking out or young fish from prematurely leaving protection. In addition, the egg isolation box 2 is detachably connected to the inner wall of the breeding box 1 by a buckle. When disassembled, the egg isolation box 2 can be removed by pulling the buckle, which facilitates cleaning of residual egg membranes.

[0026] As shown in Figure 1 , the bottom of the breeding box 1 is fixed with a base 14, and the bottom of the base 14 is pasted with a rubber anti-skid pad 15, which can prevent the device from sliding during operation.

[0027] As shown in Figure 2 , Figure 6As shown, the water circulation system comprises an inflow pipe assembly 4 and a backwater pipe 5. The inflow pipe assembly 4 is arranged above the right side of the breeding tank 1 and comprises an inflow pipe body 401, a connecting frame 402 and a flow distribution plate 403. The connecting frame 402 is fixedly sleeved on the outer wall of the water outlet of the inflow pipe body 401. The flow distribution plate 403 is connected to the connecting frame 402 and located below the water outlet. The flow distribution plate 403 is arranged in an inclined manner and has a plurality of flow distribution holes with a diameter of 0.5-1 mm on the surface. The inclined structure cooperates with the flow distribution holes to disperse the water inflow into soft streams to avoid damage or accumulation of the fish eggs caused by impact.

[0028] The backwater pipe 5 is arranged at the bottom of the breeding tank 1 and communicates with the breeding tank 1. The other end of the backwater pipe 5 communicates with an external water treatment device to realize water circulation and purification and remove impurities such as residual bait and egg membranes.

[0029] As shown in Figure 2 , Figure 3 , the intelligent temperature control detection system comprises a constant temperature assembly 3, a pH value monitoring instrument 8, a dissolved oxygen sensor 9, a temperature sensor 10, a water flow detection control valve 11 and a main control panel 12. The constant temperature assembly 3 is arranged in two groups and symmetrically arranged on the inner walls of the left and right sides of the breeding tank 1. The inner wall of the breeding tank 1 is provided with a slot 301. A constant temperature heating pipe 302 is fixedly arranged in the slot 301. An isolation cover 303 is sleeved on the outer side of the slot 301. The isolation cover 303 can prevent the fish eggs and fry from directly contacting the heating pipe to cause burns and does not affect heat transfer.

[0030] The pH value monitoring instrument 8, the dissolved oxygen sensor 9 and the temperature sensor 10 are fixedly arranged in the breeding tank 1 to collect pH value, dissolved oxygen content and water temperature data, respectively. The water flow detection control valve 11 is installed in the middle of the inflow pipe body 401 to monitor and control the water inflow rate. The main control panel 12 is fixedly arranged on the front outer wall of the breeding tank 1. All the monitoring components and control components are electrically connected to the main control panel 12 to form a "monitoring-feedback-regulation" closed loop.

[0031] As shown in Figure 2 , Figure 7 , Figure 8 , the adjustable lifting mechanism 6 is fixedly arranged on the left outer wall of the breeding tank 1 and comprises a connecting box 601, a servo motor 604, a transmission rod 605, a transmission gear 606, an L-shaped movable tooth plate 607 and a guide rod 608. The inside of the connecting box 601 is provided with a cavity 602, the rear side of the cavity 602 is fixed with a servo motor 604, two bearings 603 are fixed in the cavity 602, the two ends of a transmission rod 605 are fixedly connected with the inner walls of the bearings 603, and one end of the transmission rod 605 is connected with the output end of the servo motor 604; a transmission gear 606 is sleeved on the transmission rod 605, an L-shaped movable toothed plate 607 is engaged with the transmission gear 606, one end of a guide rod 608 is fixedly connected with the L-shaped movable toothed plate 607, and the other end is slidably connected with the inner wall of the connecting box 601; a plurality of evenly distributed light supplementing lamps 7 are mounted on the top inner side of the L-shaped movable toothed plate 607, and when the servo motor 604 drives the transmission rod 605 and the transmission gear 606 to rotate, the L-shaped movable toothed plate 607 rises and falls along the guide rod 608, so that the height of the light supplementing lamp 7 is adjusted.

[0032] As shown in Figure 2 , Figure 5 The grouper egg hatching device of the embodiment further includes an oxygen increasing assembly 13, which is composed of an oxygen pump 1301, two nano-fining discs 1302, a main air pipe 1303, a three-way connection valve 1304 and two branch air pipes 1305; the oxygen pump 1301 is fixed to the right outer wall of the breeding tank 1, and the two nano-fining discs 1302 are fixed to the inner bottom wall of the breeding tank 1; one end of the main air pipe 1303 is connected with the output end of the oxygen pump 1301, and the other end is connected with the input end of the three-way connection valve 1304; one end of each of the two branch air pipes 1305 is connected with the output end of the three-way connection valve 1304, and the other end is connected with the two nano-fining discs 1302 respectively, so that the oxygen can be fined into tiny bubbles to improve the oxygen dissolving efficiency.

[0033] It should be noted that an ultraviolet disinfection lamp can also be arranged on the inside top of the breeding tank 1, and the ultraviolet disinfection lamp is electrically connected with the main control panel, which is used for disinfection after hatching.

[0034] Embodiment Two

[0035] The embodiment provides a grouper egg hatching method, which applies the grouper egg hatching device of embodiment one and includes the following steps. S1. Device inspection and parameter presetting The connection sealing performance of the breeding tank 1, the inflow pipe assembly 4 and the backwater pipe 5 is checked to ensure that the anti-skid pad 15 of the base 14 is attached to the placement surface; the parameters are preset through the main control panel 12: the water temperature is 24-28℃, the pH value is 7.5-8.5, the dissolved oxygen value is 6-8 mg / L, the initial height of the adjustable lifting mechanism 6 is set, and the light supplementing lamp 7 is 30-40 cm away from the water surface.

[0036] S2. Fish egg pretreatment and feeding After selecting undamaged grouper eggs and soaking them in 3‰ saline solution for 5 minutes for disinfection, the eggs are drained of water with sterile gauze (to avoid damage to the eggs), and the eggs are evenly placed in the fish egg isolation box 2.

[0037] S3. Water circulation system starts Open the inflow pipe assembly 4, and the water flows into the breeding tank 1 through the inflow pipe body 401 and the distribution holes of the distribution plate 403; simultaneously start the backwater pipe 5 to make the water body circulate through the external water treatment device, and the water flow detection control valve 11 monitors the flow rate and feeds back to the main control panel 12.

[0038] S4. Temperature control and oxygenation system starts Start the intelligent temperature control detection system, and the constant temperature heating pipe 302 heats the water body through the isolation cover 303, the temperature sensor 10 monitors the water temperature and adjusts the start and stop of the heating pipe through the main control panel 12; further, the heating power of the constant temperature heating pipe 302 is adjusted in stages through the main control panel 12 according to the monitoring data of the temperature sensor 10 (to avoid sudden rise and fall of water temperature); at the same time, the oxygenation assembly 13 is started, and the oxygen pump 1301 supplies oxygen to the nanometer refining disc 1302 through the main gas pipe 1303, the three-way connection valve 1304 and the branch gas pipe 1305; if precise temperature control is needed, the heating power can be adjusted in stages through the main control panel 12.

[0039] S5. Light supplement lamp regulation Start the light supplement lamp 7, and the initial daily light is 8 hours; keep the light supplement lamp 7 30-40 cm away from the water surface during the fish egg period, and adjust to 20-25 cm during the juvenile fish period; further, the light intensity of the light supplement lamp 7 is 1000-1500 lux during the fish egg period, and the light intensity is 2000-2500 lux during the juvenile fish period.

[0040] S6. Real-time monitoring and data feedback The pH value monitoring instrument 8, the dissolved oxygen sensor 9 and the temperature sensor 10 transmit data to the main control panel 12, and abnormal parameters trigger sound and light alarm, and the main control panel 12 sends data to the mobile terminal.

[0041] S7. Dynamic adjustment in the incubation stage From the third day of fish egg incubation, gradually increase the water temperature to 26-27℃; when the dissolved oxygen value is lower than 6 mg / L, automatically increase the power of the oxygen pump 1301 of the oxygenation assembly 13 through the main control panel 12; when the water flow rate is abnormal, adjust the inflow water flow detection control valve 11 to make the water flow stable at 0.5-1 L / min.

[0042] S8. Management after the juvenile fish hatches After the juvenile fish hatches, keep the water temperature at 27-28℃, the light supplement lamp 7 is 20-25 cm away from the water surface, and the daily light is 12 hours; observe the state of the juvenile fish and record the survival rate, and feed the opening feed.

[0043] S9. Incubation completion and device cleaning After the length of the young fish is 0.8-1cm, all systems are closed, the egg isolation box 2 is disassembled and the residual egg membranes are cleaned; the inflow pipe body 401, the shunt plate 403 and the backwater pipe 5 are washed with clean water, the ultraviolet disinfection lamp is turned on for disinfection for 30 minutes and is dried for standby.

[0044] It should be noted that the wireless transmission module can be built in the main control panel 12, and the data such as water temperature, pH value and dissolved oxygen value are uploaded to the mobile terminal in real time through the wireless transmission module, and the alarm information is synchronously pushed when the abnormal parameters occur.

[0045] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea; meanwhile, for the general technical personnel in the field, the specific implementation manners and application ranges will be changed according to the idea of the present application. In conclusion, the content of the present application should not be understood as the limitation of the present application.

Claims

1. A grouper egg incubation device, characterized in that, include: A breeding box, wherein a fish egg isolation box is detachably installed inside the breeding box, and the fish egg isolation box has water-permeable holes on its perimeter wall and bottom; A water circulation system includes an inlet pipe assembly and a return pipe. The inlet pipe assembly is located on the upper right side of the breeding tank and includes an inlet pipe body, a connecting frame, and a diverter plate. The connecting frame is fixedly sleeved on the outer wall of the outlet of the inlet pipe body, and the diverter plate is connected to the connecting frame and located below the outlet of the inlet pipe body. The return pipe is located at the bottom of the breeding tank and communicates with it, and the return pipe is also connected to an external water treatment device. The intelligent temperature control and detection system includes a constant temperature component, a pH value monitoring instrument, a dissolved oxygen sensor, a temperature sensor, a water flow detection and control valve, and a main control panel. The constant temperature component is installed on the inner wall of the breeding tank. The pH value monitoring instrument, dissolved oxygen sensor, and temperature sensor are all installed inside the breeding tank. The water flow detection and control valve is installed on the inlet pipe. The main control panel is installed on the outer wall of the breeding tank, and the pH value monitoring instrument, dissolved oxygen sensor, temperature sensor, and water flow detection and control valve are all electrically connected to the main control panel. An adjustable lifting mechanism is fixed to the outer wall of the breeding box, and a supplementary light is installed on the top of the adjustable lifting mechanism; The base is fixed to the bottom of the breeding box, and the bottom of the base is provided with an anti-slip pad.

2. The grouper egg incubation device according to claim 1, characterized in that, The constant temperature component includes a constant temperature heating tube and an isolation cover. A slot is provided on the inner wall of the breeding box. The constant temperature heating tube is disposed inside the slot, and the isolation cover is fitted onto the slot.

3. The grouper egg incubation device according to claim 1, characterized in that, The adjustable lifting mechanism includes a connecting box, a servo motor, a transmission rod, a transmission gear, an L-shaped movable toothed plate, and a guide rod. The connecting box is fixed to the outer wall of the breeding box. The connecting box has a cavity inside, in which a servo motor is installed. Two bearings are fixed inside the cavity. The transmission rod passes through the inner wall of the two bearings, and one end of the transmission rod is connected to the output end of the servo motor. The transmission gear is sleeved on the transmission rod, the L-shaped movable tooth plate meshes with the transmission gear, and the guide rod is fixedly connected to the L-shaped movable tooth plate and slidably connected to the inner wall of the connecting box. Both the guide rod and the L-shaped movable toothed plate extend out of the connecting box; The supplementary light is fixed to the inner side of the top of the L-shaped movable toothed plate.

4. The grouper egg incubation device according to claim 1, characterized in that, The diverter plate is inclined, and a number of diverter holes are formed on the surface of the diverter plate.

5. A grouper egg incubation device according to claim 1, characterized in that, It also includes an oxygenation component, which includes an oxygen pump, two nano-refining discs, a main air pipe, a three-way connecting valve, and two branch air pipes. The oxygen pump is fixed to the outer wall of the breeding chamber, and the two nano-refining discs are fixed to the inner bottom wall of the breeding chamber. One end of the main air pipe is connected to the output end of the oxygen pump, and the other end is connected to the input end of the three-way connecting valve. One end of each of the two branch air pipes is connected to the two output ends of the three-way connecting valve, and the other end is connected to the two nano-refining discs.

6. A grouper egg incubation device according to claim 1, characterized in that, An ultraviolet disinfection lamp is installed on the top inner side of the breeding box, and the ultraviolet disinfection lamp is electrically connected to the main control panel.

7. A method for hatching grouper eggs, using the grouper egg hatching apparatus according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Device Inspection and Parameter Preset: Check the connection and sealing of the breeding tank, inlet pipe assembly, and return water pipe to ensure that the anti-slip pad of the base fits the placement surface; preset parameters through the main control panel: water temperature 24-28℃, pH value 7.5-8.5, dissolved oxygen value 6-8mg / L, and set the initial height of the adjustable lifting mechanism so that the supplemental light is 30-40cm from the water surface; S2. Fish egg pretreatment and release: Select undamaged grouper eggs, soak them in a 3‰ saline solution for 5 minutes to disinfect them, drain them, and then place the fish eggs evenly into the fish egg isolation box. S3. Start the water circulation system: Open the inlet pipe assembly, and the water flows into the breeding tank through the inlet pipe body and the diversion hole of the diversion plate; at the same time, start the return water pipe to circulate the water through the external water treatment device. The water flow detection and control valve monitors the flow rate and feeds it back to the main control panel. S4. Temperature control and oxygenation system start-up: The intelligent temperature control and detection system is started. The constant temperature heating tube heats the water through the isolation cover. The temperature sensor monitors the water temperature and controls the start and stop of the heating tube through the main control panel. The oxygenation component is turned on. The oxygen pump delivers oxygen to the nano-refining disc through the main air pipe, three-way connecting valve and branch air pipe. S5. Supplemental lighting control: Turn on the supplemental lighting, initially providing 8 hours of light per day; during the spawning stage, keep the supplemental lighting 30-40cm from the water surface, and adjust to 20-25cm during the juvenile stage; S6. Real-time monitoring and data feedback: pH monitoring instrument, dissolved oxygen sensor and temperature sensor transmit data to the main control panel. Abnormal parameters trigger audible and visual alarms, and the main control panel sends data to the mobile terminal. S7. Dynamic adjustment during the hatching stage: Starting from the 3rd day of fish egg hatching, gradually raise the water temperature to 26-27℃; increase the power of the aeration components when the dissolved oxygen value is lower than 6mg / L; adjust the inlet water flow detection and control valve when the water flow rate is abnormal to stabilize the water flow rate at 0.5-1L / min. S8. Management of juvenile fish after hatching: After hatching, maintain the water temperature at 27-28℃, keep the supplemental light 20-25cm above the water surface, and provide 12 hours of light per day; observe the condition of the juvenile fish and record the survival rate, and feed them starter food. S9. Hatching Completed and Equipment Cleaning: After the juvenile fish reach a length of 0.8-1cm, shut down all systems, disassemble the egg isolation box and clean any remaining egg membranes, rinse the inlet pipe, diverter plate, and return pipe, turn on the ultraviolet disinfection lamp for 30 minutes, and let it air dry for later use.

8. A method for hatching grouper eggs according to claim 7, characterized in that, In step S5, the illumination intensity of the supplemental lighting during the egg stage is 1000-1500 lux, and the illumination intensity during the juvenile stage is 2000-2500 lux.

9. A method for hatching grouper eggs according to claim 7, characterized in that, In step S7, the oxygen pump power of the oxygenation component is automatically increased via the main control panel.

10. A method for hatching grouper eggs according to claim 7, characterized in that, In step S4, the heating power of the constant temperature heating tube is adjusted in steps by the main control panel according to the monitoring data of the temperature sensor.

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