Centralized hatching device for 1 cm autumn crayfish seedlings

Abstract

The utility model discloses a centralized hatching device for 1 cm autumn crayfish seedlings, which comprises a hatching pond, a plurality of hatching units are arranged in the hatching pond, and the hatching units are arranged at intervals; the distance between the hatching unit and the bottom of the hatching pond is 25-30 cm, and the hatching unit is used for hatching autumn crayfish seedlings; a water inlet valve and a drain valve are arranged on the side wall of the hatching pond, a plurality of disc-shaped oxygenation nanotubes are arranged at the bottom of the hatching pond, and the oxygenation nanotubes are respectively connected with an aerator; according to the utility model, the plurality of hatching units are arranged in the hatching pond, the plurality of relatively independent hatching net cages are arranged in the seedling raising assemblies of the hatching units, and the hole diameter of the meshes on the side surfaces of the peripheries of the hatching net cages is 1cm, so that the in-vitro autumn crayfish seedlings can freely enter and exit from the hatching net cages and enter the seedling raising assemblies; finally, the autumn crayfish seedlings can be caught and transferred in a unified mode in the seedling raising assembly, and therefore the concentrated catching efficiency of the autumn crayfish seedlings can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of crayfish farming technology, specifically relating to a centralized hatching device for 1cm autumn crayfish seedlings. Background Technology

[0002] In crayfish farming, during the egg-bearing and breeding stage, crayfish require relatively independent incubation devices for hatching and subsequent centralized collection. Traditional incubation devices house both parent crayfish and larvae within the same unit, making it impossible to naturally separate them. This results in extremely low larval survival rates. Furthermore, traditional incubation devices cannot efficiently collect and transfer larvae in large quantities after successful breeding, hindering the large-scale production of 1cm crayfish seedlings and leading to high farming costs. Utility Model Content

[0003] The purpose of this utility model is to provide a centralized hatching device for 1cm crayfish seedlings. By setting up multiple independent seedling raising components in the hatching pond, and setting up multiple relatively independent hatching net boxes in the seedling raising components, the detached crayfish seedlings can freely enter and exit the hatching net boxes and enter the seedling raising components. Finally, the crayfish seedlings can be uniformly harvested and transferred in the seedling raising components.

[0004] This utility model is achieved through the following technical solution:

[0005] A centralized hatching device for 1cm crayfish seedlings in autumn includes a hatching pool with multiple hatching units spaced apart. The distance between each hatching unit and the bottom of the hatching pool is 25-30cm. Each hatching unit is used to hatch crayfish seedlings in autumn. The side wall of the hatching pool is equipped with an inlet valve and an outlet valve. The bottom of the hatching pool is equipped with multiple disc-shaped oxygen-enhancing nanotubes, which are connected to oxygenators.

[0006] Furthermore, the incubation unit includes a seedling raising component, which includes a structural frame and a mesh. The front and rear ends of the structural frame are respectively connected to the two ends of the incubation pool. The mesh is respectively arranged around the perimeter and bottom of the structural frame, and the mesh has an aperture of 0.25mm. Multiple incubation net boxes are arranged inside the structural frame, and the incubation net boxes are spaced apart.

[0007] Furthermore, the distance between the bottom mesh of the seedling component's structural frame and the bottom of the incubation pool is 30cm.

[0008] Furthermore, the bottom and all four sides of the incubation net box are provided with mesh panels. The mesh panel at the bottom of the incubation net box has a hole diameter of 2mm, and the mesh panel on the four sides of the incubation net box has a hole diameter of 1cm. Multiple airbags are provided on the incubation net box, which make the incubation net box float in the seedling component. The distance between the bottom of the incubation net box and the bottom mesh panel of the structural frame is 25-30cm.

[0009] Furthermore, a plastic film with a width of 20cm is provided around the top of the hatching net cage to prevent the egg-bearing crayfish from escaping.

[0010] Furthermore, an escape-proof membrane is provided around the structural skeleton, the width of which is 10cm. The escape-proof membrane is used to prevent crayfish seedlings from escaping from the seedling assembly.

[0011] Furthermore, a sunshade cloth is provided on the top of the incubation pool.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0013] In this invention, multiple hatching units are set up in the hatching pond, and multiple relatively independent hatching net boxes are set up in the seedling component of the hatching unit. The mesh diameter of the four sides of the hatching net box is 1cm, which allows the detached crayfish seedlings to freely enter and exit the hatching net box and enter the seedling component. Finally, the crayfish seedlings can be uniformly harvested and transferred in the seedling component, thereby improving the efficiency of centralized harvesting of crayfish seedlings and reducing labor costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a top view schematic diagram of the centralized hatching device for 1cm autumn crayfish seedlings according to this utility model.

[0016] Among them: 1-hatching pool, 11-inlet valve, 12-drain valve, 2-structural frame, 21-connecting part, 3-anti-escape membrane, 4-hatching net cage, 41-airbag, 42-plastic film, 5-net sheet, 6-net cloth. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] Example 1:

[0019] The main structure of this embodiment is a centralized hatching device for 1cm autumn crayfish seedlings, such as... Figure 1 As shown, the system includes an incubation pool 1, which contains multiple incubation units spaced apart from each other. The distance between each incubation unit and the bottom of the incubation pool 1 is 25-30 cm. The incubation units are used to incubate crayfish seedlings in autumn. The side walls of the incubation pool 1 are equipped with an inlet valve 11 and an outlet valve 12. The bottom of the incubation pool 1 is equipped with multiple disc-shaped oxygenation nanotubes, which are connected to oxygenation machines. The top of the incubation pool 1 is covered with a shading cloth.

[0020] During the autumn seedling stage, the crayfish are about 1cm in length and live together with berried crayfish in hatching pond 1. Hatching pond 1 is preferably circular with a height of 1.5m. Oxygenating nanotubes are installed at the bottom of hatching pond 1, which are coiled into discs and connected to an external aerator. Hatching pond 1 contains multiple hatching units spaced 1.5-2m apart, which are relatively independent and used to hatch and cultivate autumn crayfish seedlings. At the same time, inlet valve 11 and outlet valve 12 are installed on the side wall of hatching pond 1 for changing the water. A shading cloth is installed on the top of hatching pond 1 to shade the autumn crayfish seedlings and prevent them from dying due to excessively high water temperature.

[0021] Example 2:

[0022] This embodiment, based on the above embodiment, further defines the incubation unit, which includes a seedling raising component. The seedling raising component includes a structural frame 2 and a mesh 6. The front and rear ends of the structural frame 2 are respectively connected to the two ends of the incubation pool 1. The mesh 6 is respectively arranged around the perimeter and bottom of the structural frame 2, and the mesh diameter of the mesh 6 is 0.25mm. Multiple incubation net boxes 4 are arranged inside the structural frame 2, and the incubation net boxes 4 are spaced apart. The distance between the bottom mesh 6 of the structural frame 2 and the bottom of the incubation pool 1 is 30cm. An escape-proof membrane 3 is arranged around the structural frame 2, and the width of the escape-proof membrane is 10cm. The escape-proof membrane 3 is used to prevent crayfish seedlings from escaping from the seedling raising component.

[0023] The incubation unit includes a seedling raising component, which contains multiple spaced incubation net cages 4. The seedling raising component includes a structural frame 2, preferably made of bonded PVC pipes. The PVC pipes are hollow, allowing the structural frame 2 to float in the incubation pool 1. Both ends of the structural frame 2 have connecting parts 21 that interlock with the edge of the incubation pool 1, ensuring stability of the structural frame 2 within the incubation pool 1. Simultaneously, floating aquatic plants such as water hyacinth are placed and spread on the water surface within each structural frame 2 for further... In addition to purifying water, providing shade, supplementing nutrients, and offering habitat, the structure also helps lower water temperature during hot seasons. The front and rear ends of the structural frame 2 are glued to the side walls of the hatching pond 1. Mesh 6 with 2mm apertures is installed around the perimeter and bottom of the structural frame 2 to prevent crayfish larvae from escaping. The distance between the mesh 6 at the bottom of the structural frame 2 and the bottom of the hatching pond 1 is 30cm. Furthermore, an escape-proof membrane 3 with a width of 10cm is installed around the top perimeter of the structural frame 2 to prevent crayfish larvae from escaping the hatching components. Other parts of this embodiment are the same as those in the previous embodiment and will not be repeated here.

[0024] Example 3:

[0025] Based on the above embodiments, this embodiment further defines the hatching net box 4. The bottom and four side walls of the hatching net box 4 are provided with net sheets 5. The mesh diameter of the bottom net sheet 5 of the hatching net box 4 is 2mm, and the mesh diameter of the side wall net sheets 5 of the hatching net box 4 is 1cm. The hatching net box 4 is provided with multiple air bladders 41, which make the hatching net box 4 float in the seedling component. The distance between the bottom of the hatching net box 4 and the bottom net sheet 5 of the structural frame 2 is 25-30cm. The top of the hatching net box 4 is provided with a plastic film 42 around its perimeter. The width of the plastic film is 20cm, and the plastic film 42 is used to prevent the egg-bearing crayfish from escaping.

[0026] The structural frame 2 of the seedling raising component contains multiple hatching net boxes 4, spaced apart from each other. Each hatching net box 4 is a cubic frame structure bonded with PVC pipes, with mesh panels 5 on all four sides and the bottom. The mesh panels 5 on the side walls of the hatching net box 4 have a 1cm aperture, while the mesh panels 5 on the bottom of the hatching net box 4 have a 2mm aperture. After the crayfish seedlings successfully hatch and leave the hatching net box 4, they can freely enter and exit between the seedling raising component and the hatching net box 4 through the large-aperture mesh panels 5 around the hatching net box 4. This helps prevent overfeeding and potential hatching problems. In case of shrimp eating smaller shrimp, crayfish seedlings can be herded into the seedling assembly for mass capture and transfer to a dedicated seedling rearing pond. The hatching net cage 4 has four air bladders 41 around its perimeter, allowing it to float within the seedling assembly. The distance between the netting 5 at the bottom of the hatching net cage 4 and the netting 6 at the bottom of the seedling assembly is 30cm. A plastic film 42, 20cm wide, is placed around the top of the hatching net cage 4, also serving as an escape prevention measure to prevent berried crayfish from escaping into the seedling assembly. Other parts of this embodiment are the same as those in the previous embodiment and will not be repeated here.

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A centralized hatching device for 1cm crayfish seedlings in autumn, characterized in that, The device includes an incubation pool containing multiple incubation units spaced apart from each other. The distance between each incubation unit and the bottom of the incubation pool is 25-30 cm. The incubation units are used to incubate crayfish seedlings in autumn. The side walls of the incubation pool are equipped with inlet valves and outlet valves. The bottom of the incubation pool is equipped with multiple disc-shaped oxygen-enhancing nanotubes, which are connected to oxygenators.

2. The centralized hatching device for 1cm crayfish seedlings as described in claim 1, characterized in that, The incubation unit includes a seedling raising component, which includes a structural frame and a mesh. The front and rear ends of the structural frame are connected to the two ends of the incubation pool, respectively. The mesh is set around the perimeter and bottom of the structural frame, and the mesh has an aperture of 0.25 mm. Multiple incubation net boxes are set inside the structural frame, and the incubation net boxes are spaced apart.

3. The centralized hatching device for 1cm autumn crayfish seedlings as described in claim 2, characterized in that, The distance between the bottom mesh of the structural frame of the seedling component and the bottom of the incubation pool is 30cm.

4. The centralized hatching device for 1cm autumn crayfish seedlings as described in claim 2, characterized in that, The bottom and four sides of the incubation net box are provided with mesh panels. The mesh panel at the bottom of the incubation net box has a hole diameter of 2mm, and the mesh panel on the four sides of the incubation net box has a hole diameter of 1cm. The incubation net box is provided with multiple airbags, which make the incubation net box float in the seedling component. The distance between the bottom of the incubation net box and the bottom mesh panel of the structural frame is 25-30cm.

5. The centralized hatching device for 1cm autumn crayfish seedlings as described in claim 4, characterized in that, The top of the hatching net cage is surrounded by a plastic film, which is 20cm wide and is used to prevent the egg-bearing crayfish from escaping.

6. The centralized hatching device for 1cm autumn crayfish seedlings as described in claim 2, characterized in that, The structural frame is surrounded by an escape-proof membrane, which is 10cm wide and is used to prevent crayfish seedlings from escaping from the seedling assembly.

7. The centralized hatching device for 1cm crayfish seedlings as described in claim 1, characterized in that, The top of the incubation pool is covered with a sunshade cloth.

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