A shrimp breeding device for freshwater aquaculture

Abstract

The application relates to the technical field of shrimp fry breeding, and discloses a freshwater aquaculture shrimp fry breeding device, which comprises a breeding tank, two net bags, an oxygen increasing assembly and two groups of water power circulation mechanisms; the top of the breeding tank is provided with an opening and is used for shrimp fry cultivation; a plurality of circular recesses are arranged on the bottom side of the inside of the breeding tank, which provides a hiding and molting space for the shrimp fry; a supporting rod is fixedly connected to the inner side wall of the breeding tank, and the two net bags are hung on the supporting rod through hooks; the oxygen increasing assembly is arranged in the inside of the breeding tank and increases the water body dissolved oxygen content by releasing fine bubbles; the layered design of the circular recesses and the net bags provides a hidden molting space and a parent-offspring isolation environment for the shrimp fry, the stable water flow circulation and dissolved oxygen environment simulate the natural water ecological environment, the breeding efficiency and economic benefits are improved, the overall structure is relatively simple, the device is very convenient to use, and the practicability of the device is improved.

Description

Technical Field

[0001] This application relates to the technical field of shrimp larvae breeding, and in particular to a shrimp larvae breeding device for freshwater aquaculture. Background Technology

[0002] Currently, the shrimp larvae used in artificial breeding come from two sources: artificially cultivated shrimp and wild-caught shrimp larvae. Both can meet the requirements of artificial breeding. The artificial cultivation of shrimp larvae refers to the intensive feeding and management of artificially selected parent shrimp to promote egg-bearing and hatching, and then cultivating the shrimp larvae to reach the juvenile stage to meet the requirements of artificial breeding.

[0003] Traditional shrimp larvae rearing ponds have certain shortcomings in the process: poor living environment: the pond bottom structure is simple, and shrimp larvae lack hiding and molting space, resulting in a high rate of cannibalism. Insufficient dissolved oxygen: the natural dissolved oxygen in traditional rearing ponds is insufficient to meet the needs of high-density shrimp larvae, especially when water quality deteriorates or the weather is hot and humid, a sudden drop in dissolved oxygen can easily cause shrimp larvae to surface and die. Utility Model Content

[0004] To address the problems mentioned in the background art, this application provides a shrimp larvae breeding device for freshwater aquaculture.

[0005] The freshwater shrimp larvae breeding device provided in this application adopts the following technical solution:

[0006] A shrimp larvae breeding device for freshwater aquaculture includes a breeding box, two net bags, an oxygenation component, and two sets of hydrodynamic circulation mechanisms;

[0007] The top of the seedling box is open, which is used for shrimp seedling cultivation;

[0008] The bottom of the nursery box is lined with multiple circular depressions to provide hiding and molting space for the shrimp larvae.

[0009] The inner wall of the seedling box is fixedly connected to a support rod, and both net bags are suspended on the support rod by hooks;

[0010] The oxygenation component is installed inside the seedling box and increases the dissolved oxygen in the water by releasing fine bubbles;

[0011] The two sets of hydrodynamic circulation mechanisms are symmetrically arranged inside the seedling box to realize active water circulation and enhance water flow coverage.

[0012] Preferably, the oxygenation component includes multiple oxygenation discs, each of which is fixedly connected to the bottom side of the seedling box. Multiple oxygenation holes are provided on the upper surface of each of the multiple oxygenation discs. Adjacent oxygenation discs are fixedly connected to each other through a connecting pipe. An air inlet pipe is fixedly connected to the side wall of one of the oxygenation discs. One end of the air inlet pipe passes through the side wall of the seedling box and extends to the outside.

[0013] Preferably, the hydrodynamic circulation mechanism includes a stirring drum, which is fixedly connected to the inner wall of the seedling box via two connecting rods. The stirring drum has a first cavity and a second cavity inside. A stirring rod is rotatably installed inside the stirring drum. Multiple stirring blades located in the second cavity are fixedly connected to the side wall of the stirring rod. Multiple through holes are evenly opened on the side wall of the second cavity. Two drive motors are fixedly installed on the outer wall of the seedling box. The drive motors are connected to the stirring rod via a drive assembly.

[0014] Preferably, the driving assembly includes a driving bevel gear and a driven bevel gear. The inner sidewall of the seedling box is symmetrically rotatably connected to a connecting shaft. One end of the connecting shaft passes through the sidewall of the mixing drum and is fixedly connected to the driving bevel gear located in the first cavity. The sidewall of the mixing rod is fixedly fitted with a driven bevel gear that meshes with the driving bevel gear. The driven bevel gear is located inside the first cavity.

[0015] Preferably, a drainage pipe is fixedly connected to the side wall of the seedling box.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] Compared to existing technologies, this device features a layered design with circular recesses and a net, providing shrimp larvae with a concealed molting space and a parent-larval isolation environment. It also offers stable water circulation and dissolved oxygen, simulating natural aquatic ecosystems, thus improving larval breeding efficiency and economic benefits. Furthermore, the overall structure is relatively simple and easy to use, enhancing the device's practicality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the application;

[0019] Figure 2 This is a cross-sectional structural diagram of the seedling box in the embodiment of the application;

[0020] Figure 3 This is a schematic diagram of the hydrodynamic circulation mechanism in the embodiment of the application;

[0021] Figure 4 This is a schematic diagram of the structure of the net bag in the embodiment of the application.

[0022] Explanation of reference numerals in the attached drawings: 1. Seedling box; 2. Mixing drum; 3. Support rod; 4. Net bag; 5. Hook; 6. Drive motor; 7. Air inlet pipe; 8. Oxygenating disc; 9. Oxygenating hole; 10. Connecting pipe; 11. Connecting rod; 12. Connecting shaft; 13. Through hole; 14. First cavity; 15. Mixing rod; 16. Driving bevel gear; 17. Driven bevel gear; 18. Mixing blade; 19. Second cavity; 20. Circular depression. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] This application discloses a shrimp larvae rearing device for freshwater aquaculture. (Refer to...) Figure 1-4 A freshwater shrimp larvae rearing device includes a rearing box 1, two net bags 4, an aeration component, and two sets of hydrodynamic circulation mechanisms. The top of the rearing box 1 is open for shrimp larvae rearing. Multiple circular depressions 20 are laid on the bottom inside the rearing box 1 to provide hiding and molting space for the shrimp larvae. Support rods 3 are fixedly connected to the inner wall of the rearing box 1. Both net bags 4 are suspended from the support rods 3 by hooks 5. The aeration component is located inside the rearing box 1 and increases the dissolved oxygen in the water by releasing fine bubbles. The oxygenation assembly includes multiple aeration discs 8, each fixedly connected to the bottom of the seedling tray 1. Multiple aeration holes 9 are provided on the upper surface of each aeration disc 8. Adjacent aeration discs 8 are connected by a connecting pipe 10. An air inlet pipe 7 is fixedly connected to the side wall of one of the aeration discs 8, with one end of the air inlet pipe 7 penetrating the side wall of the seedling tray 1 and extending to the outside. Two sets of hydrodynamic circulation mechanisms are symmetrically arranged inside the seedling tray 1 to achieve active water circulation and enhance water flow coverage. The system includes a mixing drum 2, which is fixedly connected to the inner wall of the seedling box 1 via two connecting rods 11. The mixing drum 2 has a first cavity 14 and a second cavity 19 inside. A stirring rod 15 is rotatably mounted inside the mixing drum 2. Multiple stirring blades 18 located within the second cavity 19 are fixedly connected to the side wall of the stirring rod 15. Multiple through holes 13 are evenly distributed on the side wall of the second cavity 19. Two drive motors 6 are fixedly mounted on the outer wall of the seedling box 1. The drive motors 6 are connected to the stirring rod 15 via a drive assembly. The transmission connection includes a drive bevel gear 16 and a driven bevel gear 17. A connecting shaft 12 is symmetrically rotatably connected to the inner side wall of the seedling box 1. One end of the connecting shaft 12 passes through the side wall of the mixing drum 2 and is fixedly connected to the drive bevel gear 16 located in the first cavity 14. A driven bevel gear 17 that meshes with the drive bevel gear 16 is fixedly sleeved on the side wall of the mixing rod 15. The driven bevel gear 17 is located inside the first cavity 14. A drain pipe (not shown in the figure) is fixedly connected to the side wall of the seedling box 1.

[0025] The implementation principle of the shrimp larvae rearing device for freshwater aquaculture in this application embodiment is as follows: All electrical components in this application are externally connected to a power source and control switch during use. The circular depression 20 at the bottom of the rearing box 1 provides shrimp larvae with a physical space for hiding and molting, simulating the shrimp burrowing environment of natural waters and reducing cannibalism. The net 4 suspended on the connecting rod 11 isolates parent shrimp from juvenile shrimp, preventing adult shrimp from preying on the larvae, while simultaneously creating a layered habitat space to meet the survival needs of shrimp larvae at different growth stages. The aeration disc 8 is connected to an external air source (e.g., an external aeration pump) through the air inlet pipe 7. The gas is released into the water in the form of fine bubbles through the aeration holes 9, rapidly increasing the dissolved oxygen level. As the bubbles rise, they cause water flow, promoting uniform distribution of dissolved oxygen. Especially in cases of deteriorating water quality or hot and humid weather, continuous air supply can maintain stable dissolved oxygen levels in the water, preventing shrimp larvae from surfacing due to oxygen deficiency. The drive motor 6 rotates the connecting shaft 12, and through the meshing of the driving bevel gear 16 and the driven bevel gear 17, the stirring rod 15 drives the stirring blades 18 to rotate within the second cavity 19 of the stirring cylinder 2. Water flows into the second cavity 19 through the through hole 13, is stirred by the stirring blades 18 to form a circulating flow, and is then discharged through the opening on the side wall of the stirring cylinder 2, realizing active circulation of the pond water. This circulating flow covers the entire pond, accelerating the diffusion and discharge of organic matter such as uneaten feed and feces, and, in conjunction with natural water exchange, preventing local water quality deterioration; at the same time, it simulates a natural water flow environment, stimulating shrimp larvae to swim and enhancing their vitality. Water in the nursery box 1 can be drained through the drain pipe.

[0026] In this process, the layered design of the circular depression 20 and the net bag 4 provides shrimp larvae with a hidden molting space and a parent-larval isolation environment, stable water circulation and dissolved oxygen environment, simulates the natural aquatic ecology, improves seedling breeding efficiency and economic benefits, and the overall structure is relatively simple and easy to use, which improves the practicality of the device.

[0027] Here, the model of drive motor 6 can be selected according to the actual situation, for example, the model can be YE2-6344-37KW.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shrimp larvae rearing device for freshwater aquaculture, characterized in that: Includes a seedling box (1), two net bags (4), an oxygenation component, and two sets of hydrodynamic circulation mechanisms; The top of the seedling box (1) is open for shrimp seedling cultivation; The bottom side of the nursery box (1) is lined with multiple circular depressions (20) to provide hiding and molting space for shrimp larvae; The inner wall of the seedling box (1) is fixedly connected to a support rod (3), and both net bags (4) are suspended on the support rod (3) by hooks (5); The oxygenation component is installed inside the seedling box (1) and increases the dissolved oxygen in the water by releasing fine bubbles; The two sets of hydrodynamic circulation mechanisms are symmetrically arranged inside the seedling box (1) to realize active circulation of pool water and enhance water flow coverage.

2. The shrimp larvae rearing device for freshwater aquaculture according to claim 1, characterized in that: The oxygenation assembly includes multiple oxygenation discs (8), each of which is fixedly connected to the bottom side of the seedling box (1). Multiple oxygenation holes (9) are provided on the upper surface of each of the multiple oxygenation discs (8). Adjacent oxygenation discs (8) are fixedly connected to each other through a connecting pipe (10). An air inlet pipe (7) is fixedly connected to the side wall of one of the oxygenation discs (8). One end of the air inlet pipe (7) passes through the side wall of the seedling box (1) and extends to the outside.

3. The shrimp larvae rearing device for freshwater aquaculture according to claim 1, characterized in that: The hydrodynamic circulation mechanism includes a stirring drum (2), which is fixedly connected to the inner wall of the seedling box (1) via two connecting rods (11). The stirring drum (2) has a first cavity (14) and a second cavity (19) inside. A stirring rod (15) is rotatably installed inside the stirring drum (2). Multiple stirring blades (18) located in the second cavity (19) are fixedly connected to the side wall of the stirring rod (15). Multiple through holes (13) are evenly opened on the side wall of the second cavity (19). Two drive motors (6) are fixedly installed on the outer wall of the seedling box (1). The drive motors (6) are connected to the stirring rod (15) via a drive assembly.

4. The shrimp larvae rearing device for freshwater aquaculture according to claim 3, characterized in that: The drive assembly includes a driving bevel gear (16) and a driven bevel gear (17). The inner sidewall of the seedling box (1) is symmetrically rotatably connected to a connecting shaft (12). One end of the connecting shaft (12) passes through the sidewall of the mixing drum (2) and is fixedly connected to the driving bevel gear (16) located in the first cavity (14). The sidewall of the mixing rod (15) is fixedly fitted with a driven bevel gear (17) that meshes with the driving bevel gear (16). The driven bevel gear (17) is located inside the first cavity (14).

5. The shrimp larvae rearing device for freshwater aquaculture according to claim 1, characterized in that: A drain pipe is fixedly connected to the side wall of the seedling box (1).

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