A device for breeding of a labroides dimidiatus

Abstract

The utility model belongs to aquaculture technical field, concretely is a kind of the breeding device of labroides dimidiatus, including water tank, the top of water tank is equipped with inlet pipe;The lateral wall of water tank is rotatably connected with outlet pipe;The middle part is equipped with flow controller, and the micro-flow water state of 0.5-1.5L / min is maintained by flow controller;The water body dissolved oxygen content of micro-flow water state in water tank is ensured to be ≥6mg / L and water temperature is stably at 18-22 ℃, and the hatching environment of imitating natural stream is formed;The inside of water tank is placed with screen mechanism;The screen mechanism includes screen body, screen silk net and handle;The screen body adopts wooden frame;The bottom of screen body is equipped with 40-mesh screen silk net;The structure setting of flow controller realizes accurate control water current speed and water temperature, simulates the stream habitat of labroides dimidiatus natural breeding, reduces the environmental stress of egg and seedling, makes hatching rate be promoted;Continuous micro-flow water ensures the dissolved oxygen content of water body, so that the dissolved oxygen uniformity is promoted.

Description

Technical Field

[0001] This utility model belongs to the field of aquaculture technology, specifically a seedling raising device for the broodstock of the broodstock. Background Technology

[0002] The scleroderma (belonging to the Cyprinidae family of the Cypriniformes order) is a characteristic economic fish species in the mountain streams of southern my country. Due to its tender flesh and strong adaptability, it has become an important species for aquaculture in mountainous areas. In recent years, affected by factors such as habitat destruction and overfishing, the wild scleroderma population has continued to decline, and artificial breeding technology has become the key to ensuring the sustainable development of its industry.

[0003] Currently, the core pain points of the breeding technology for *Scleroderma glabripennis* are: poor adaptability to the hatching environment. *Scleroderma glabripennis* fertilized eggs are sinking eggs with thin and easily sticky membranes. In traditional still water or extensive flowing water hatching, uneven water flow often leads to egg accumulation and hypoxia, or excessive water flow can cause damage to the egg membranes. The equipment is not stable enough. Existing hatching screens mostly rely on a single floating body or fixed support, which are easily affected by water level fluctuations and water flow impacts, causing them to tilt. This results in uneven distribution of egg groups, frequent occurrences of local hypoxia or crushing deaths.

[0004] Therefore, it is urgent to develop a seedling breeding device for the light-lipped fish that is adapted to its biological characteristics and takes into account both stability and precise control. The purpose of this utility model is to provide a seedling breeding device for the light-lipped fish to solve the problems mentioned in the background art. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and solve the technical problem of developing a seedling breeding device for *Scleroderma glabripennis* mentioned in the background art, the technical solution adopted by this utility model is as follows: The seedling breeding device for *Scleroderma glabripennis* of this utility model includes a water tank, characterized in that: an inlet pipe is provided at the top of the water tank; an outlet pipe is rotatably connected to the side wall of the water tank; a flow controller is installed in the middle, maintaining a micro-flow of water at 0.5-1.5 L / min; the micro-flow of water in the water tank ensures that the dissolved oxygen content is ≥6 mg / L and the water temperature is stable at 18-22℃, forming a natural stream-like hatching environment; a screen mechanism is placed inside the water tank; through the above structure, precise control of water flow speed and water temperature is achieved, simulating the natural stream habitat for *Scleroderma glabripennis* reproduction, reducing environmental stress on eggs and larvae, and improving the hatching rate; the continuous micro-flow ensures the dissolved oxygen content of the water, thereby avoiding egg suffocation or larval death caused by local hypoxia, and improving the uniformity of dissolved oxygen.

[0006] Preferably, the screen mechanism includes a screen body, a silk screen, and a handle; the screen body is made of a wooden frame; the bottom of the screen body is provided with a 40-mesh silk screen; and a set of handles is fixed to the top of the screen body; through the above structure, the highly suspended wooden frame screen body allows the fertilized eggs to be placed in the upper layer of the water (the area with the most stable water flow and the most sufficient dissolved oxygen), avoiding the squeezing and hypoxia problems of traditional bottom hatching, and significantly reducing the mechanical damage rate of the eggs; the 40-mesh silk screen not only fixes the eggs, but also ensures sufficient exchange of water flow and nutrients, thereby improving the survival rate of the eggs.

[0007] Preferably, a mesh escape-proof net is installed near the water tank at the outlet pipe; a filter cotton is installed on the side of the mesh escape-proof net away from the water tank; and a mesh escape-proof net is installed on the side near the water tank. Through the above structure, the 5mm mesh escape-proof net at the outlet pipe can intercept fry with a body length ≥2mm, and the 40-mesh filter cotton filters out uneaten food and feces, reducing fry escape losses and lowering the risk of water quality deterioration; the mesh escape-proof net at the outlet pipe blocks the invasion of miscellaneous fish, predatory organisms, and pathogens, thus reducing the fry disease rate.

[0008] Preferably, a pull-out frame is slidably connected to the side wall of the screen body; a pull hole is provided on the side wall of the pull-out frame; a screen mesh is fixedly connected to the bottom end of the pull-out frame; through the above structure, the screen mesh can be quickly disassembled by pulling the pull-out frame when it is damaged or broken, so as to repair the screen mechanism in time, prevent the occurrence of downtime, and the device has a simple structure and is easy to operate.

[0009] Preferably, two sets of floats are fixed to the top of the screen body, each set containing 2-3 EVA floats with a diameter of 5cm; the buoyancy of a single set of floats is ≥5N, and the distance between the two sets of floats is adapted to the width of the screen body to form a horizontal balance support structure; through the above structure, it is possible to ensure that the fertilized eggs are evenly distributed in the screen mesh, reduce local accumulation and hypoxia, the buoyancy of the EVA floats is stable and water immersion resistant, and the suspension height of the screen body can be adjusted synchronously with the rise and fall of the water level in the water tank, always keeping the fertilized eggs in the middle and upper layers of water with the most dissolved oxygen, resisting acid and alkali corrosion, and being lightweight, without adding extra load to the screen body and reducing the risk of frame deformation.

[0010] Preferably, the bottom of the water tank is provided with an inclined sedimentation zone; the inclination angle of the inclined sedimentation zone is set to 45°; through the above structure, water can be changed quickly, thereby reducing labor intensity and reducing water quality deterioration caused by the deposition of dirt.

[0011] Preferably, the water tank is made of LLDPE through rotational molding; the screen body is made of anti-corrosion pine wood; and the screen mesh is made of food-grade nylon. Through the above structure, the highly suspended wooden frame screen body allows the fertilized eggs to be placed in the upper layer of the water (the area with the most stable water flow and the most sufficient dissolved oxygen), avoiding the squeezing and hypoxia problems of traditional bottom hatching, and significantly reducing the mechanical damage rate of the eggs; the 40-mesh screen mesh not only fixes the eggs but also ensures sufficient exchange of water flow and nutrients, thereby improving the survival rate of the eggs.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The seedling raising device for the broodstock of the broodstock described in this utility model achieves precise control of water flow speed and water temperature through the structural setting of the flow controller, simulating the stream habitat of the broodstock's natural reproduction, reducing environmental stress on eggs and larvae, and improving the hatching rate; the continuous micro-flow of water ensures the dissolved oxygen content of the water body, thereby avoiding egg suffocation or larval death caused by local hypoxia, and improving the uniformity of dissolved oxygen.

[0014] 2. The seedling raising device for the broodstock of the broodstock described in this utility model, through the structural setting of the sieve mesh, enables the tapered roller bearings to be symmetrically arranged on both sides of the input gear, which can simultaneously bear radial and axial loads, adapt to the complex force scenario during power input, avoid shaft deformation or jamming, and make the input bearings more load-bearing. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the float structure in this utility model;

[0018] Figure 3 This is a schematic diagram of the mesh anti-escape net structure in this utility model;

[0019] Figure 4 This is a schematic diagram of the pull-out frame structure in this utility model.

[0020] In the diagram: 1. Water tank; 11. Inlet pipe; 12. Outlet pipe; 13. Flow controller; 2. Screen body; 21. Screen mesh; 22. Handle; 3. Mesh anti-escape net; 31. Filter cotton; 4. Pull-out frame; 41. Pull hole; 5. Float ball; 6. Inclined sedimentation zone. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Specific implementation examples are given below.

[0023] like Figure 1 As shown in the embodiment of this utility model, a seedling raising device for *Scleroderma fasciatus* includes a bed 1, characterized in that it includes a water tank 1, wherein: an inlet pipe 11 is provided at the top of the water tank 1; an outlet pipe 12 is rotatably connected to the side wall of the water tank 1; a flow controller 13 is installed in the middle of the inlet pipe 11, and a micro-flow state of 0.5-1.5L / min is maintained through the outlet pipe 13; the micro-flow state in the water tank 1 ensures that the dissolved oxygen content of the water is ≥6mg / L and the water temperature is stable at 18-22℃, forming a hatching environment that mimics a natural stream; a screen mechanism is placed inside the water tank 1; during operation, when light is required... When raising larvae of the lipped ...

[0024] like Figure 2 As shown, the screen mechanism includes a screen body 2, a silk screen 21, and a handle 22. The screen body 2 is made of a wooden frame. The bottom of the screen body 2 is provided with a 40-mesh silk screen 21. A set of handles 22 is fixed to the top of the screen body 2. During operation, the fertilized eggs of the bryophyll carp are first placed on the top of the silk screen 21. Then, the screen body 2 is placed horizontally inside the water tank 1 through the handles 22. Then, the water outlet pipe 13 is opened to inject water into the water tank 1, thereby causing the screen mechanism to float upward with the rise of the liquid level. Through the above structure, the highly suspended wooden frame screen body 2 keeps the fertilized eggs in the upper layer of the water (the area with the most stable water flow and the most sufficient dissolved oxygen), avoiding the squeezing and lack of oxygen problems of traditional bottom hatching. The mechanical damage rate of the eggs is significantly reduced. The 40-mesh silk screen 21 not only fixes the eggs but also ensures sufficient exchange of water flow and nutrients, thereby improving the survival rate of the eggs.

[0025] like Figure 3As shown, a mesh escape-proof net 3 is installed at the outlet pipe 12 near the water tank 1; a filter cotton 31 is installed on the side of the mesh escape-proof net 3 away from the water tank 1; a mesh escape-proof net 3 is installed on the side of the inlet pipe 11 near the water tank 1; during operation, a 5mm mesh escape-proof net 3 and a 40-mesh filter cotton 31 are sequentially installed at the outlet pipe 12 to intercept fry and impurities with a diameter ≥2mm. The inlet pipe 11 is equipped with a mesh escape-proof net 3 of the same specification to prevent external biological invasion. Through the above structure, the 5mm mesh escape-proof net 3 of the outlet pipe 12 can intercept fry with a body length ≥2mm, and the 40-mesh filter cotton 31 can filter uneaten food and feces, reducing the loss of fry and reducing the risk of water quality deterioration; the mesh escape-proof net 3 at the inlet pipe 11 blocks the invasion of miscellaneous fish, predatory organisms and pathogens, thus reducing the disease rate of fry.

[0026] like Figure 1 As shown, a pull-out frame 4 is slidably connected to the side wall of the screen body 2; a pull hole 41 is provided on the side wall of the pull-out frame 4; a screen mesh 21 is fixedly connected to the bottom end of the pull-out frame 4; during operation, when the screen mesh 21 is damaged and needs to be replaced after a period of use, the screen body 2 is taken out, the pull-out frame 4 is slid open through the pull hole 41, and then the damaged screen mesh 21 is removed and replaced with a new screen mesh 21. Through the above structure, the screen mesh 21 can be quickly disassembled by pulling the pull-out frame 4 when it is damaged or broken, so as to repair the screen mechanism in time, prevent downtime, and the device has a simple structure and is easy to operate.

[0027] like Figure 4 As shown, two sets of floats 5 are fixed to the top of the screen body 2, each set containing 2-3 EVA floats with a diameter of 5cm. The buoyancy of a single set of floats 5 is ≥5N, and the distance between the two sets of floats is adapted to the width of the screen body 2 to form a horizontal balance support structure. During operation, the symmetrically distributed double sets of floats 5 can offset the tilting of the screen body 2 caused by water flow impact or water level fluctuations, avoiding the problem of easy side tipping of the traditional single set of floats 5. The above structure can ensure that the fertilized eggs are evenly distributed in the screen mesh 21, reducing local accumulation and hypoxia. The EVA floats have stable buoyancy and are resistant to water immersion. They can synchronously adjust the suspension height of the screen body 2 with the rise and fall of the water level in the water tank 1, always keeping the fertilized eggs in the middle and upper layers of water with the most dissolved oxygen. They are resistant to acid and alkali corrosion, and are lightweight, so they will not add extra load to the screen body 2 and reduce the risk of frame deformation.

[0028] like Figure 1 As shown, the bottom of the water tank 1 is provided with an inclined sedimentation zone 6; the inclination angle of the inclined sedimentation zone 6 is set to 45°; during operation, the inclined sedimentation zone 6, in conjunction with the drain valve, can empty and replace the water within 10 minutes. Through the above structure, water replacement can be carried out quickly, thereby reducing labor intensity and reducing water quality deterioration caused by the deposition of dirt.

[0029] like Figure 3As shown, the water tank 1 is made of LLDPE rotational molding; the screen body 2 is made of anti-corrosion pine wood; and the screen mesh 21 is made of food-grade nylon. During operation, the LLDPE water tank 1, the anti-corrosion pine wood screen body 2, and the nylon screen mesh 21 are non-toxic to organisms and comply with the GB 11607 fishery standard for inlet pipes, avoiding poisoning of eggs or larvae caused by the release of harmful substances from traditional metals / inferior plastics. The acid and alkali corrosion resistance extends the service life of the device to more than five years, reducing equipment replacement costs.

[0030] During operation, when raising larvae for the *Gymnocypris chinensis*, the fertilized eggs are placed at the top of the screen mechanism into the inlet tank 1. The opening of the outlet pipe 13 is controlled to allow water to flow from the inlet pipe 11 into the tank 1. The water level in the tank 1 is then controlled by rotating the outlet pipe 12, creating a micro-flow state. This structure allows for precise control of water flow speed and temperature, simulating the natural stream habitat for *Gymnocypris chinensis* reproduction, reducing environmental stress on eggs and larvae, and improving hatching rates. The continuous micro-flow ensures adequate dissolved oxygen levels, preventing egg suffocation or larval death due to localized oxygen deficiency, and improving oxygen uniformity. First, the fertilized eggs are placed at the top of the screen 21. Then, the screen body 2 is horizontally placed inside the inlet tank 1 using the handle 22. Finally, the outlet pipe 13 is opened to allow water to flow into the tank 1. The screen mechanism rises with the liquid level, and through the above structure, the highly suspended wooden frame screen 2 places the fertilized eggs in the upper layer of the water (the area with the most stable water flow and the most abundant dissolved oxygen), avoiding the squeezing and lack of oxygen problems of traditional bottom hatching, and significantly reducing the mechanical damage rate of the eggs; the 40-mesh silk screen 21 not only fixes the eggs, but also ensures sufficient exchange of water flow and nutrients, thus improving the survival rate of the eggs; a 5mm mesh escape-proof net 3 and a 40-mesh filter cotton 31 are installed in sequence at the outlet pipe 12 to intercept seedlings and impurities with a diameter ≥2mm; the same specification mesh escape-proof net 3 is installed on the inlet pipe 11 to prevent external biological invasion. Through the above structure, the 5mm mesh escape-proof net 3 of the outlet pipe 12 can intercept seedlings with a body length ≥2mm, and the 40-mesh filter cotton 31 filters out residual feed and feces, reducing the loss of seedlings and reducing the risk of water quality deterioration;The mesh anti-escape net 3 at the inlet pipe 11 blocks the invasion of miscellaneous fish, predators, and pathogens, reducing the disease rate of fry. When the screen mesh 21 is damaged and needs to be replaced after a period of use, the screen body 2 is removed, and the pull frame 4 is slid open through the pull hole 41. Then, the damaged screen mesh 21 is removed and replaced with a new one. This structure allows the screen mesh 21 to be quickly disassembled when damaged or broken by pulling the pull frame 4, thus enabling timely repair of the screen mechanism and preventing downtime. The device has a simple structure and is easy to operate. The symmetrically distributed double sets of floats 5 can counteract the tilting of the screen body 2 caused by water flow impact or water level fluctuations, avoiding the problem of easy tipping over of the traditional single set of floats 5. This structure ensures that fertilized eggs are evenly distributed within the screen mesh 21, reducing local accumulation. The EVA float provides stable buoyancy and is resistant to water immersion. Its suspension height on the screen body 2 is adjusted synchronously with the water level in tank 1, ensuring fertilized eggs are always in the upper-middle layer of water with the highest dissolved oxygen levels. It is also resistant to acid and alkali corrosion, and its lightweight design does not increase the load on the screen body 2, reducing the risk of frame deformation. The tilted sedimentation zone 6, combined with the drain valve, allows for water replacement within 10 minutes. This structure enables rapid water changes, reducing labor intensity and minimizing water quality deterioration caused by sediment buildup. The LLDPE tank 1, anti-corrosion pine wood screen body 2, and nylon screen mesh 21 are non-toxic and meet the GB 11607 fisheries standard for inlet pipes, avoiding poisoning of eggs or larvae caused by the release of harmful substances from traditional metals / inferior plastics. Its acid and alkali corrosion resistance extends the device's service life to over five years, reducing equipment replacement costs.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A seedling raising device for *Scleroderma fasciatus*, comprising a water tank (1), characterized in that: The top of the water tank (1) is provided with an inlet pipe (11); the side wall of the water tank (1) is rotatably connected with an outlet pipe (12); a flow controller (13) is installed in the middle of the inlet pipe (11), and the flow controller (13) maintains a micro-flow state of 0.5-1.5L / min; the micro-flow state in the water tank (1) ensures that the dissolved oxygen content of the water is ≥6mg / L and the water temperature is stable at 18-22℃, forming an incubation environment that mimics a natural stream; a screen mechanism is placed inside the water tank (1).

2. The seedling raising device for *Gymnocypris chinensis* according to claim 1, characterized in that: The sieve mechanism includes a sieve body (2), a sieve mesh (21), and a handle (22); the sieve body (2) is made of a wooden frame; the bottom of the sieve body (2) is provided with a (40) mesh sieve mesh (21); and a set of handles (22) are fixed to the top of the sieve body (2).

3. The seedling raising device for *Gymnocypris chinensis* according to claim 2, characterized in that: A mesh anti-escape net (3) is installed at the outlet pipe (12) near the water tank (1); a filter cotton (31) is installed on the side of the mesh anti-escape net (3) away from the water tank (1); a mesh anti-escape net (3) is installed on the side of the inlet pipe (11) near the water tank (1).

4. The seedling raising device for *Gymnocypris chinensis* according to claim 3, characterized in that: The side wall of the sieve body (2) is slidably connected to a pull-out frame (4); the side wall of the pull-out frame (4) is provided with a pull hole (41); and a sieve mesh (21) is fixedly connected to the bottom end of the pull-out frame (4).

5. The seedling raising device for *Gymnocypris chinensis* according to claim 4, characterized in that: Two sets of floats (5) are fixed to the top of the sieve body (2), each set containing 2-3 EVA floats with a diameter of 5cm; the buoyancy of a single set of floats (5) is ≥5N, and the distance between the two sets of floats is adapted to the width of the sieve body (2) to form a horizontal balance support structure.

6. The seedling raising device for *Gymnocypris chinensis* according to claim 5, characterized in that: The bottom of the water tank (1) is provided with an inclined sedimentation zone (6); the inclined angle of the inclined sedimentation zone (6) is set to 45°.

7. The seedling raising device for *Gymnocypris chinensis* according to claim 6, characterized in that: The water tank (1) is made of LLDPE rotational molding; the sieve body (2) is made of anti-corrosion pine wood; and the sieve mesh (21) is made of food-grade nylon.

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