A multi-layer modular method and device for in vitro hatching and breeding of procambarus clarkii eggs

Abstract

The present application relates to the hatching field of Procambarus clarkii, and discloses a multi-layer modular Procambarus clarkii egg in-vitro hatching and breeding method and device, which comprises a main frame structure and uniformly arranged hatching components, the hatching components are uniformly arranged in the main frame structure, the main frame structure comprises a fixing frame, a top plate and a bottom plate are respectively fixedly installed on the fixing frame in an up-down manner, the hatching components are supported on the bottom plate, a water pipe is horizontally arranged below the top plate, a faucet corresponding to the hatching components is arranged on the water pipe, and a drain pipe penetrates through the tail part of the hatching component. The multi-layer modular arrangement mode effectively improves the space utilization, is suitable for factory batch hatching production, and can effectively improve the hatching efficiency of Procambarus clarkii eggs and the egg fry quality.

Description

Technical Field

[0001] This invention relates to the field of redclaw crayfish hatching, and in particular to a multi-layered modular method and apparatus for in vitro hatching and breeding of redclaw crayfish eggs. Background Technology

[0002] Redclaw crayfish, due to its delicious meat and high economic value, has become one of the world's most important freshwater farmed shrimp species. Factory-style, high-density artificial breeding is a key link in large-scale aquaculture, and the hatching stage of the shrimp eggs directly determines the survival rate and quality of the seedlings. Under natural or traditional hatching methods, broodstock carrying eggs and hatching presents problems such as inconsistent hatching cycles, interference between individuals, easy water pollution by broodstock, and the inability to separate abnormally developing eggs early, thus limiting breeding efficiency and seedling uniformity.

[0003] To address these issues, in vitro incubation technology has emerged, which involves separating shrimp eggs from the parent shrimp and placing them in a specially controlled device for incubation. Existing in vitro incubation devices mostly use static or simply aerated tanks or incubation trays. While these achieve separation from the parent shrimp, they still have significant drawbacks: First, shrimp eggs from the same batch naturally vary in size, weight, and development speed. In a static environment, smaller eggs are easily obscured, resulting in uneven access to light, dissolved oxygen, and water flow, leading to asynchronous development and inconsistent hatching sizes. Second, dynamic sorting of eggs during incubation is impossible; dead or weak eggs are difficult to remove in a timely manner, easily spoiling water quality and affecting healthy eggs. Third, most devices rely on manual periodic turning or sorting, which is labor-intensive, inefficient, and may cause mechanical damage to the eggs.

[0004] Therefore, there is an urgent need in this field for an in vitro incubation device for redclaw crayfish eggs that integrates automation, dynamic control and physical sorting functions to solve the screening problem during the incubation of redclaw crayfish. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-layered modular method and apparatus for in vitro hatching and breeding of red claw crayfish eggs.

[0006] This invention is achieved through the following technical solution: A multi-layer modular method and apparatus for in vitro hatching and breeding of red claw crayfish eggs includes a main frame structure and uniformly arranged hatching components. The hatching components are evenly arranged inside the main frame structure. The main frame structure includes a fixing frame. A top plate and a bottom plate are fixedly installed inside the fixing frame, respectively. The hatching components are supported on the bottom plate. A water pipe is arranged horizontally below the top plate, and the water pipe is equipped with a faucet corresponding to the hatching component. A drain pipe runs through the tail of the hatching component. The incubation component includes an incubation box and a control section arranged in an alternating and symmetrical manner. The control section includes a top block, a rotating wheel, a mounting plate, an upright plate, connecting ropes, a swing arm, a support plate, a support frame, a rotating block, a first rotating shaft, a first pulley, a support net, a belt, a second rotating shaft, and a second pulley. The support frame is symmetrically arranged and fixedly installed on the surface of the support plate. The top of the support frame supports the first rotating shaft. The rotating block is located at the tail of the swing arm and is fixedly fitted onto the surface of the first rotating shaft. The first pulley is fixedly fitted onto the outer end of the surface of the first rotating shaft. The support net is located above the swing arm. The connecting ropes are symmetrically arranged and fixedly connected to the end face of the support net. The mounting plate is fixedly installed on the surface of the upright plate. A rotating wheel is installed at a position slightly to the left of the center of the mounting plate. The top blocks are evenly distributed around the outer circumference of the rotating wheel, and the top blocks of different sizes are distributed around the circumference. The second rotating shaft is installed at a position slightly to the right of the center of the mounting plate. The second pulley is fixedly fitted onto the surface of the second rotating shaft. The belt is fitted between the first pulley and the second pulley. Preferably, the incubator is equipped with a rotating plate at the front, and the rotating plate is movably assembled with the incubator.

[0007] Preferably, the drain pipe is arranged with a gradient inclination, with the height gradually decreasing towards the drain pipe outlet.

[0008] Preferably, a pull-out water collection box is movably installed on the outside of the fixing frame. The pull-out water collection box is located directly below the outlet of the drain pipe and is used to collect the discharged wastewater for centralized treatment.

[0009] Preferably, the support net is a mesh structure, and the connecting rope is fixedly connected to the side wall of the incubator.

[0010] Preferably, a drive motor is mounted behind the rotating wheel, the output shaft of the drive motor is fixedly assembled with the rotating wheel, and the top block has an arc-shaped cross-section.

[0011] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a staggered, symmetrically arranged control system to drive a support net in repeated tilting and horizontal reciprocating motions. By leveraging the differences in weight and size of the shrimp eggs, it achieves dynamic stratification and sorting of eggs within the same batch, automatically separating smaller, dead, or abnormally developing eggs from healthy ones. This facilitates timely removal and prevents dead eggs from polluting the water and affecting the development of healthy eggs. Simultaneously, the reciprocating motion promotes water flow, ensuring each shrimp egg receives uniform light and dissolved oxygen, addressing the uneven stimulation issues common in static environments. This effectively promotes synchronized development of the eggs and improves the uniformity of hatched shrimp larvae. The entire sorting process eliminates the need for manual turning and picking, reducing labor intensity and mechanical damage to the eggs. The multi-layered, modular arrangement also effectively improves space utilization, making it suitable for factory-scale mass hatching production and significantly improving the hatching efficiency and larval quality of redclaw crayfish eggs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] Figure 2 This is a schematic diagram of the internal structure of the incubation component of the present invention.

[0014] Figure 3 This is a schematic diagram showing the interaction between the incubator and the control unit of the present invention.

[0015] Figure 4 This is a schematic diagram of the control section of the present invention.

[0016] Labeling Explanation: A. Hatching Components, B. Main Frame Structure, 1. Fixing Frame, 2. Top Plate, 3. Lighting Lamp, 4. Water Pipe, 5. Faucet, 6. Drain Pipe, 7. Bottom Plate, 8. Hatching Box, 9. Top Block, 10. Rotating Wheel, 11. Mounting Plate, 12. Upright Plate, 13. Connecting Rope, 14. Swing Rod, 15. Support Plate, 16. Rotating Plate, 17. Support Frame, 18. Rotating Block, 19. First Rotating Shaft, 20. First Pulley, 21. Support Net, 22. Belt, 23. Second Rotating Shaft, 24. Second Pulley. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-4 The present invention provides a technical solution: A multi-layer modular method and apparatus for in vitro hatching and breeding of red claw crayfish eggs includes a main frame structure B and uniformly arranged hatching components A. The hatching components A are evenly arranged inside the main frame structure B. The main frame structure B includes a fixing frame 1. A top plate 2 and a bottom plate 7 are fixedly installed inside the fixing frame 1, respectively. The hatching components A are supported on the bottom plate 7. A water pipe 4 is arranged horizontally below the top plate 2, and a faucet 5 corresponding to the hatching components A is installed on the water pipe 4. A drain pipe 6 passes through the tail of the hatching components A. The incubation component A includes an incubation box 8 and a control section arranged in an alternating symmetrical manner. The control section includes a top block 9, a rotating wheel 10, a mounting plate 11, a vertical plate 12, a connecting rope 13, a swing arm 14, a support plate 15, a support frame 17, a rotating block 18, a first rotating shaft 19, a first pulley 20, a support net 21, a belt 22, a second rotating shaft 23, and a second pulley 24. The support frame 17 is symmetrically arranged and fixedly installed on the surface of the support plate 15. The top of the support frame 17 supports the first rotating shaft 19. The rotating block 18 is located at the tail of the swing arm 14 and is fixedly fitted onto the surface of the first rotating shaft 19. The first pulley 20 is fixedly mounted on the outer end of the surface of the first rotating shaft 19. The support net 21 is located above the swing arm 14. The connecting rope 13 is symmetrically arranged and fixedly connected to the end face of the support net 21. The mounting plate 11 is fixed on the surface of the upright plate 12. The rotating wheel 10 is mounted at the center left of the mounting plate 11. The top blocks 9 are evenly distributed on the outer circumference of the rotating wheel 10, and the size of the top blocks 9 distributed circumferentially is different. The second rotating shaft 23 is installed at the center right of the mounting plate 11. The second pulley 24 is fixedly mounted on the surface of the second rotating shaft 23. The belt 22 is fitted between the first pulley 20 and the second pulley 24. The incubator 8 is equipped with a rotating plate 16 in front of it, and the rotating plate 16 is movablely assembled with the incubator 8.

[0019] The drain pipe 6 is set with a gradient slope, and the height gradually decreases towards the outlet of the drain pipe 6.

[0020] A pull-out water collection box is movably installed on the outside of the fixed frame 1. The pull-out water collection box is located directly below the outlet of the drain pipe 6 and is used to collect the discharged wastewater for centralized treatment.

[0021] The support net 21 has a mesh structure, and the connecting rope 13 is fixedly connected to the side wall of the incubator 8.

[0022] The drive motor is mounted behind the rotating wheel 10, and the output shaft of the drive motor is fixedly assembled with the rotating wheel 10. The top block 9 has an arc-shaped cross-section.

[0023] Operating steps: S1. First, prepare by placing the red claw crayfish eggs on the support net 21 and controlling the water tap 5 as needed to control the amount of water added to the incubation box 8. The lighting lamp 3 is used to facilitate observation of the situation inside the incubation box 8. S2. During the incubation process, the corresponding drive motor on the rotating wheel 10 is started, causing the rotating wheel 10 to rotate. Because the top blocks 9 are of different sizes, the contact time between the top blocks 9 of different sizes and the second pulley 24 will be different, thus the driving stroke of the second pulley 24 will also be different. Through the contact between the top blocks 9 and the second pulley 24, the second pulley 24 is driven to rotate. With the transmission of the belt 22, the swing arm 14 can be rotated, pushing the support net 21 and causing the support net 21 to tilt slowly. When the position of the rotating wheel 10 without the top blocks 9 rotates to the position of the second pulley 24, the second pulley 24 will no longer be driven. Due to gravity, the swing arm 14 will be reset, so that the tilted support net 21 will slowly become horizontal again. Repeated operation makes the shrimp eggs move repeatedly on the support net 21, which is equivalent to making the shrimp eggs layered for incubation. The layers are divided according to the size and weight of the shrimp eggs. This is achieved by the control part. The two sets of control parts move alternately and do not affect each other. S3. Finally, the water can be drained through the drain pipe 6 and replaced with fresh water to achieve water circulation, which improves the breeding environment and increases hatching efficiency.

[0024] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A multi-layered modular method and apparatus for in vitro hatching and breeding of redclaw crayfish eggs, comprising a main frame structure (B) and uniformly arranged hatching components (A), characterized in that: The incubation components (A) are evenly arranged inside the main frame structure (B). The main frame structure (B) includes a fixed frame (1). The fixed frame (1) has a top plate (2) and a bottom plate (7) fixedly installed at the top and bottom respectively. The incubation components (A) are supported on the bottom plate (7). A water pipe (4) is arranged horizontally below the top plate (2). A faucet (5) corresponding to the incubation components (A) is installed on the water pipe (4). A drain pipe (6) runs through the tail of the incubation components (A). The incubation component (A) includes an incubation box (8) and a control section arranged in an alternating symmetrical manner. The control section includes a top block (9), a rotating wheel (10), a mounting plate (11), a vertical plate (12), a connecting rope (13), a swing arm (14), a support plate (15), a support frame (17), a rotating block (18), a first rotating shaft (19), a first pulley (20), a support net (21), a belt (22), a second rotating shaft (23), and a second pulley (24). The support frame (17) is symmetrically arranged and fixedly installed on the surface of the support plate (15). The top of the support frame (17) supports the first rotating shaft (19). The rotating block (18) is located at the tail of the swing arm (14) and is fixedly fitted onto the first rotating shaft (19). On the surface of the first shaft (19), the first pulley (20) is fixedly fitted on the outer end of the surface of the first shaft (19), the support net (21) is located above the swing arm (14), the connecting rope (13) is symmetrically arranged and fixedly connected to the end face of the support net (21), the mounting plate (11) is fixed on the surface of the upright plate (12), the rotating wheel (10) is installed at the left side of the center of the mounting plate (11), the top blocks (9) are evenly distributed on the outer circumference of the rotating wheel (10), and the size of the top blocks (9) distributed in the circle is different, the second shaft (23) is installed at the right side of the center of the mounting plate (11), the second pulley (24) is fixedly fitted on the surface of the second shaft (23), and the belt (22) is fitted between the first pulley (20) and the second pulley (24); The incubator (8) is equipped with a rotating plate (16) in front of it, and the rotating plate (16) is movablely assembled with the incubator (8).

2. The multi-layer modular redclaw crayfish egg in vitro hatching and breeding method and apparatus according to claim 1, characterized in that: The drain pipe (6) is set with a gradient slope, and the height gradually decreases towards the outlet of the drain pipe (6).

3. The multi-layer modular redclaw crayfish egg in vitro hatching and breeding method and apparatus according to claim 1, characterized in that: A pull-out water collection box is movably installed on the outside of the fixed frame (1). The pull-out water collection box is located directly below the outlet of the drain pipe (6) and is used to collect the discharged wastewater for centralized treatment.

4. The multi-layer modular redclaw crayfish egg in vitro hatching and breeding method and apparatus according to claim 1, characterized in that: The support net (21) is a mesh structure, and the connecting rope (13) is fixedly connected to the side wall of the incubator (8).

5. The multi-layer modular redclaw crayfish egg in vitro hatching and breeding method and apparatus according to claim 1, characterized in that: The drive motor is mounted behind the wheel (10), and the output shaft of the drive motor is fixedly assembled with the wheel (10). The top block (9) has an arc-shaped cross-section.

6. The multi-layer modular redclaw crayfish egg in vitro hatching and breeding method and apparatus according to claim 1, characterized in that, It also includes the following steps: S1. First, prepare by placing the red claw crayfish eggs on the support net (21) and controlling the water tap (5) as needed to control the amount of water added to the incubator (8). The lighting lamp (3) is used to facilitate observation of the situation inside the incubator (8). S2. During the incubation process, the corresponding drive motor on the rotating wheel (10) is started, causing the rotating wheel (10) to rotate. Because the top blocks (9) are of different sizes, the contact time between the top blocks (9) of different sizes and the second pulley (24) will be different, thus the driving stroke of the second pulley (24) will also be different. Through the contact between the top blocks (9) and the second pulley (24), the second pulley (24) is driven to rotate. With the transmission of the belt (22), the swing rod (14) can be rotated, pushing the support net (21) so that the support net (21) can be rotated. Slowly tilt the wheel (10) until the position without the top block (9) rotates to the position of the second pulley (24). At this time, the second pulley (24) will not be driven. Due to gravity, the swing arm (14) will be reset, so that the tilted support net (21) will slowly become horizontal again. Repeat the operation to make the shrimp eggs move repeatedly on the support net (21), which is equivalent to making the shrimp eggs layered for breeding and hatching. The layers are divided according to the size and weight of the shrimp eggs. As long as it is achieved by the control part, the two sets of control parts move alternately and do not affect each other. S3. Finally, the water can be drained through the drain pipe (6) and replaced with new water to achieve water circulation, which makes the breeding environment better and improves the hatching efficiency.

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