A device for flow water culture of juvenile stage of grouper

Abstract

This invention discloses a flow-through culture device for juvenile grouper, in which juvenile grouper are cultured in a rearing pond and multiple biomimetic ponds according to their size. A feeding device is installed on the bank of the rearing pond, including a feeding and sorting section that extends into the rearing pond to collect the fish. A drive unit continuously operates the feeding and sorting section in the rearing pond, continuously collecting fry of different sizes and transporting them to different biomimetic ponds via pipelines. This reduces mechanical damage (abrasions, bruises) and physiological stress on the fish, thereby inhibiting stress-induced diseases and mortality, and improving the survival rate of juvenile grouper during the rearing stage.

Description

Technical Field

[0001] This invention relates to the technology of grouper farming, and in particular to a flowing water farming device for juvenile grouper. Background Technology

[0002] As a high-value marine fish fry, the rearing of grouper during the juvenile and young stages is crucial. During this stage, the fish grow at different rates, resulting in significant differences in size. If juveniles of different sizes are raised together in the same pond, severe cannibalism will occur, with larger fish eating smaller ones, leading to a sharp decline in survival rates.

[0003] Currently, large-scale fossilized grouper hatcheries generally use manual grading and screening to solve this problem. The operation process is usually as follows: all the juvenile fish in the rearing pond are periodically removed and placed in a grading screen. By manually shaking the screen or using water flow, the juveniles of different sizes are separated into different net cages, and then transferred to different breeding ponds (bionic ponds) for further cultivation.

[0004] While effective, this method has several drawbacks: First, it is labor-intensive and inefficient, heavily reliant on manual labor, and time-consuming. Second, it causes severe stress to the fish fry; frequent collection, sorting, and transportation processes can cause the fish to collide and bruise each other, easily triggering stress reactions and secondary infections, affecting their growth and survival. Finally, the grading accuracy is limited and the consistency is poor; manual operation makes it difficult to guarantee the accuracy and fairness of each grading, and it cannot achieve continuous, automated grading operations. Summary of the Invention

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a flow-through aquaculture device for juvenile grouper, which solves the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a grouper juvenile stage flow-through culture device, wherein the grouper juveniles are cultured in a rearing pond and multiple biomimetic ponds according to their size, and a feeding device is provided on the bank of the rearing pond. The feeding device includes a feeding and sorting part that can scoop up the fish, and the feeding and sorting part extends into the rearing pond.

[0007] The feeding equipment also includes a feeding section and a drive unit. The output end of the drive unit is connected to the feeding and sorting section, and the feeding section is connected to the feeding and sorting section.

[0008] Each of the multiple biomimetic pools is equipped with at least one conveying pipeline, which converges and connects to the feeding and sorting section.

[0009] Furthermore, the feeding and sorting section includes multiple connecting rods and a turntable connected to the connecting rods. The output end of the drive unit is connected to the axis of the turntable. Each connecting rod has a fish cage installed at its tail end, and multiple fish cages have fish inlets on their side walls.

[0010] Furthermore, the diameter of the fish inlet openings of multiple fish cages increases sequentially along the rotation direction of the turntable, and they are divided into first cages, second cages, third cages, and even more, based on the size of the fish inlet openings.

[0011] Furthermore, the fish trap is made of multiple panels spliced ​​together, the connecting rod is a hollow tube, the inner cavity of the fish trap is connected to the inner cavity of the connecting rod, and the side of the fish trap corresponding to the connecting rod is conical.

[0012] Furthermore, the bottom surface of the first cage has an opening, and a rod is provided in the middle of the opening, with a rotatable sealing plate sleeved on the rod.

[0013] Furthermore, each of the two opposite sides of the top surface of the first cage is provided with a buoyancy member, and each buoyancy member is connected to a pull rope, the other end of which is connected to the top of the partition plate.

[0014] Furthermore, the feeding section includes a detachable feed cylinder, with a slot provided on each connecting rod. The feed cylinder is inserted into the slot, and the discharge end of the feed cylinder is connected to the inner cavity of the connecting rod.

[0015] Furthermore, the delivery pipeline includes multiple fish discharge pipes and multiple fish inlet pipes; the multiple fish discharge pipes are arranged in the bionic pool, with their outlets extending to the back of the turntable; the multiple fish inlet pipes correspond one-to-one with multiple connecting rods, with the inlet end of each fish inlet pipe connected to the corresponding connecting rod, and the outlet end corresponding to the inlet end of a corresponding fish discharge pipe.

[0016] Furthermore, the inlet end of the fish discharge pipe is cone-shaped, and the connection between the fish inlet pipe and the connecting rod is located between the feed cylinder and the fish cage.

[0017] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, the feeding and sorting part is driven by the driving component to continuously operate in the rearing pond, continuously catching fish fry of different sizes and sending them to different biomimetic ponds through the conveying pipeline. This reduces mechanical damage (abrasions, collisions) and physiological stress on the fish, thereby inhibiting diseases and deaths caused by stress and improving the survival rate of juvenile fish in the rearing stage.

[0018] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is an application scenario illustration of Embodiment 1 of the present invention.

[0020] Figure 2 This is a diagram illustrating the feeding device according to Embodiment 1 of the present invention.

[0021] Figure 3 This is a diagram illustrating the first cage of Embodiment 1 of the present invention.

[0022] Figure 4 This is a rear view of the feeding device according to Embodiment 1 of the present invention.

[0023] Explanation of reference numerals in the attached diagram:

[0024] 10 cultivation pools;

[0025] Bionic pool 20;

[0026] Feeding equipment 30, feeding and sorting section 31, connecting rod 311, turntable 312, fish cage 313, first cage body 313a, opening 313a1, rod body 313a2, sealing plate 313a3, floating component 313a4, pull rope 313a5, second cage body 313b, third cage body 313c, fish inlet 3131, feeding section 32, feed cylinder 321, slot 322, driving component 33;

[0027] 40. Delivery pipe 41. Fish discharge pipe 42. Detailed Implementation

[0028] Please refer to Figure 1-4 As shown, it illustrates the specific structure of a preferred first embodiment of the present invention, which is a grouper juvenile fish flow-through culture device, wherein the grouper juveniles are cultured in a rearing pond 10 and multiple biomimetic ponds 20 according to their size. A feeding device 30 is provided on the bank of the rearing pond 10. The feeding device 30 includes a feeding and sorting part 31 that can scoop up the fish, and the feeding and sorting part 31 extends into the rearing pond 10.

[0029] The feeding device 30 also includes a feeding section 32 and a driving component 33. The output end of the driving component 33 is connected to the feeding and sorting section 31, and the feeding section 32 is connected to the feeding and sorting section 31.

[0030] Each of the multiple biomimetic ponds 20 is equipped with at least one conveying pipe 40, which converges and connects to the feeding and sorting section 31. The feeding and sorting section 31 is continuously operated in the rearing pond by the drive unit 33, continuously catching fish fry of different sizes and sending them to different biomimetic ponds 20 through the conveying pipes 40. This reduces mechanical damage (abrasions, bruises) and physiological stress on the fish, thereby inhibiting stress-induced diseases and mortality, and improving the survival rate of juvenile fish during the rearing stage.

[0031] For example, the feeding and sorting section 31 includes multiple connecting rods 311 and a turntable 312 connected to the connecting rods 311. The output end of the drive unit 33 is connected to the axis of the turntable 312. Each connecting rod 311 has a fish cage 313 installed at its tail end. The side walls of the multiple fish cages 313 are provided with fish inlets 3131. The drive unit 33 drives the turntable 312 to rotate. Because the turntable structure is evenly stressed, it vibrates little and has low noise when rotating in the aquaculture water, which will not disturb the fish in the pond and is conducive to smooth feeding and catching of fish. In addition, since there are multiple connecting rods 311 and fish cages 313, when one fish cage finishes catching and turns out of the water to transport fish fry into the conveying pipe 40, the next empty fish cage has been simultaneously turned into the water to wait for feeding.

[0032] For example, the diameter of the fish inlet 3131 of multiple fish cages 313 increases sequentially along the rotation direction of the turntable 312, and is divided into first cage body 313a, second cage body 313b, third cage body 313c and even more according to the diameter of the fish inlet 3131 from small to large. Feed is fed from the feeding section 32 to the sorting section 31 into the fish cage 313, transforming the fishing behavior into a feeding activity. When the fry are attracted by the bait, they actively gather and approach the moving fish cage 313, thereby reducing the fright and stress caused by forced fishing. When the turntable 312 drives the fish cage 313 to rotate, the fish inlets 3131 on each cage form a physical sorting sequence from the entrance to the exit. In addition, the fry are not all caught and sorted. Instead, when they enter the fish cage 313, they are assigned to the first cage 313a, the second cage 313b, the third cage 313c, or even other cages according to the matching relationship between their body size and the diameter of the fish inlet 3131. Then, with the rotation of the turntable 312, the fry of different sizes are sent into the conveying pipe 40 connected to the fish cage 313 that holds the fry, and are then directionally transported to different bionic ponds 20.

[0033] For example, the fish cage 313 is composed of multiple panels spliced ​​together, and the connecting rod 311 is a hollow tube. The inner cavity of the fish cage 313 is connected to the inner cavity of the connecting rod 311, and the side of the fish cage 313 corresponding to the connecting rod 311 is conical. The panels are solid, so that when the fish cage 313 is removed from the rearing tank 10, the liquid inside the fish cage 313 will not leak. In use, when the fish cage 313 is rotated to a certain angle with the connecting rod 311, the liquid inside the fish cage 313 will carry the fish fry into the connecting rod 311, ensuring that the fish fry are in an aquatic environment throughout the entire process from being captured, temporarily stored in the cage, to entering the delivery pipeline.

[0034] For example, the bottom surface of the first cage 313a has an opening 313a1, and a rod 313a2 is provided in the middle of the opening 313a1. A rotatable sealing plate 313a3 is sleeved on the rod 313a2. When the sealing plate 313a3 is rotated open, the smallest fish fry can be directly put back into the original rearing pond 10 through this opening 313a1, so that the smallest fish fry can still continue to be reared in the rearing pond 10.

[0035] For example, the top surfaces of the first cage 313a are provided with floating members 313a4 on opposite sides, and each floating member 313a4 is connected to a pull rope 313a5. The other end of the pull rope 313a5 is connected to the top of the sealing plate 313a3. When the first cage 313a is not in the rearing pond 10, the floating members 313a4 cannot provide buoyancy. At this time, the pull rope 313a5 is in a slack state, and the sealing plate 313a3 tilts naturally under the action of gravity or water flow, so that the captured fry will fall back into the pond on their own. When the first cage 313a is in the rearing pond 10, the floating members 313a4 float on the water surface. The pull rope 313a5 pulls the top of the sealing plate 313a3, causing it to rotate around the rod 313a2, thereby closing the opening 313a1. This prevents large fish from entering the first cage 313a when feeding fry.

[0036] It should be noted that the connecting rod 311 corresponding to the first cage 313a is a solid rod.

[0037] For example, the feeding section 32 includes a detachable feed cylinder 321. Each connecting rod 311 has a slot 322, into which the feed cylinder 321 is inserted, and the discharge end of the feed cylinder 321 is connected to the inner cavity of the connecting rod 311. When the feed cylinder 321 feeds, there is no need to set up a separate feed conveying pipe. Instead, the hollow inner cavity of the connecting rod 311 is used as a conveying channel, which simplifies the feeding structure. The feed cylinder 321 can be easily removed for adding, cleaning, or replacing different types / sizes of feed.

[0038] For example, the delivery pipeline 40 includes multiple fish discharge pipes 41 and multiple fish inlet pipes 42; the multiple fish discharge pipes 41 are arranged in the bionic pool 20, and their outlet ends extend to the back of the turntable 312; the multiple fish inlet pipes 42 correspond one-to-one with multiple connecting rods 311, and the inlet end of each fish inlet pipe 42 is connected to the corresponding connecting rod 311, while the outlet end corresponds to the inlet end of a corresponding fish discharge pipe 41. The first cage 313a is for feeding the smallest fish fry and does not have the function of transporting them to the biomimetic pond 20. Taking the second cage 313b and the third cage 313c as examples, when the second cage 313b is removed from the rearing pond 10 and the third cage 313c is moved into the rearing pond 10 for feeding, the connecting rod 311 corresponding to the second cage 313b is tilted, so that the liquid and fish fry in the second cage 313b enter the connecting rod 311. At this time, the fish inlet pipe 42 moves above the fish outlet pipe 41, so that the fish fry and water in the connecting rod 311 enter the fish inlet pipe 42 and are discharged from the fish inlet pipe 42 into the fish outlet pipe 41 for transportation until they enter the corresponding biomimetic pond 20.

[0039] For example, the inlet end of the fish discharge pipe 41 is conical, and the connection between the fish inlet pipe 42 and the connecting rod 311 is located between the feed cylinder 321 and the fish cage 313. When the fish fry are discharged from the fish inlet pipe 42 by the impact of the water flow, the conical inlet acts like a "funnel" or "trumpet mouth", increasing the effective receiving cross-sectional area. Even if the discharge direction is slightly deviated, the fish fry can still be captured into the pipe, avoiding rebound, damage or leakage caused by direct impact on the edge of the pipe opening.

[0040] It should be noted that the rotation of turntable 312 is intermittent, not continuous, so that the fish fry have enough time to enter the fish cage 313.

[0041] In summary, the key design focus of this invention is;

[0042] 1.1 The drive unit 33 of the feeding device 30 drives the turntable 312 to rotate at a constant speed within the rearing pond 10. Multiple fish cages 313a, 313b, 313c, etc., with progressively increasing inlet diameters, are arranged on the turntable along the direction of rotation. The feeding section 32 feeds the fish cages through the feed cylinder 321 inserted into the slot 322 of the connecting rod 311, attracting the fish fry to actively swim into the corresponding cages.

[0043] 1.2 Fish fry are placed into different cages according to their body size and the diameter of the inlet. The turntable rotates continuously, causing cages that have been caught to rise above the water, while empty cages are lowered back into the water for continued feeding, enabling continuous operation. The fish cages are multi-panel, sealed structures, with their inner cavities connected to the delivery pipeline 40 via hollow connecting rods, ensuring that the fish fry remain in the aquatic environment throughout the process.

[0044] 1.3 The bottom of the first cage 313a is provided with a passage 313a1 controlled by a float 313a4 and a pull rope 313a5. When the cage is in the water, the float rises and pulls the sealing plate 313a3 to close the passage and prevent large fish from entering; after turning out of the water, the buoyancy disappears, the sealing plate opens, and small fish fry leak back into the rearing pond for continued rearing;

[0045] 1.4 When the second cage 313b or the third cage 313c is turned out of the water, the fish fry inside are carried by the water flow through the connecting rod into the corresponding fish inlet pipe 42, and then fall into the fish outlet pipe 41 with the conical inlet, and are finally transported to the corresponding bionic pool 20.

[0046] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A flow-through culture device for juvenile grouper, wherein juvenile grouper are cultured in a rearing pond (10) and multiple biomimetic ponds (20) according to their size, characterized in that: The rearing pond (10) is provided with a feeding device (30) on the bank. The feeding device (30) includes a feeding and sorting part (31) that can scoop up fish bodies, and the feeding and sorting part (31) extends into the rearing pond (10). The feeding device (30) also includes a feeding section (32) and a driving component (33). The output end of the driving component (33) is connected to the feeding and sorting section (31), and the feeding section (32) is connected to the feeding and sorting section (31). Each of the multiple biomimetic pools (20) is equipped with at least one conveying pipeline (40), and the conveying pipelines (40) converge and connect to the feeding and sorting section (31).

2. The grouper juvenile stage flow-through culture device according to claim 1, characterized in that: The feeding and sorting section (31) includes multiple connecting rods (311) and a turntable (312) connected to the connecting rods (311). The output end of the drive unit (33) is connected to the axis of the turntable (312). Each connecting rod (311) has a fish cage (313) installed at its tail end. The side walls of the multiple fish cages (313) are provided with fish inlets (3131).

3. The grouper juvenile stage flow-through culture device according to claim 2, characterized in that: The diameter of the fish inlet (3131) of the multiple fish cages (313) increases sequentially along the rotation direction of the turntable (312), and is divided into first cage body (313a), second cage body (313b), third cage body (313c) and more according to the diameter of the fish inlet (3131) from small to large.

4. A flow-through culture device for juvenile grouper according to claim 2 or 3, characterized in that: The fish cage (313) is made of multiple plates spliced ​​together. The connecting rod (311) is a hollow tube. The inner cavity of the fish cage (313) is connected to the inner cavity of the connecting rod (311), and the side of the fish cage (313) corresponding to the connecting rod (311) is conical.

5. A flow-through culture device for juvenile grouper according to claim 3, characterized in that: The first cage (313a) has an opening (313a1) on its bottom surface. A rod (313a2) is provided in the middle of the opening (313a1), and a rotatable sealing plate (313a3) is sleeved on the rod (313a2).

6. A flow-through culture device for juvenile grouper according to claim 5, characterized in that: The first cage (313a) has floating members (313a4) on both sides of its top surface. Each of the floating members (313a4) is connected to a pull rope (313a5), and the other end of the pull rope (313a5) is connected to the top of the partition plate (313a3).

7. A flow-through culture device for juvenile grouper according to claim 4, characterized in that: The feeding part (32) includes a detachable feed cylinder (321), and each of the connecting rods (311) is provided with a slot (322). The feed cylinder (321) is inserted into the slot (322), and the discharge end of the feed cylinder (321) is connected to the inner cavity of the connecting rod (311).

8. A flow-through culture device for juvenile grouper according to claim 7, characterized in that: The conveying pipeline (40) includes multiple fish discharge pipes (41) and multiple fish inlet pipes (42); the multiple fish discharge pipes (41) are arranged in the bionic pool (20), and their outlet ends extend to the back of the turntable (312); the multiple fish inlet pipes (42) correspond one-to-one with the multiple connecting rods (311), and the inlet end of each fish inlet pipe (42) is connected to the corresponding connecting rod (311), while the outlet end corresponds to the inlet end of a corresponding fish discharge pipe (41).

9. A flow-through culture device for juvenile grouper according to claim 8, characterized in that: The inlet end of the fish discharge pipe (41) is conical, and the connection between the fish inlet pipe (42) and the connecting rod (311) is located between the feed cylinder (321) and the fish cage (313).

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