Breeding system for cherax quadricarinatus larvae

Abstract

The utility model relates to a cherax quadricarinatus larva cultivation system which comprises a larva cultivation tank extending in the length direction of the cherax quadricarinatus larva cultivation system. The hanging rope extends in the length direction, is arranged in the larva culture tank, is located on the upper side of a water body of the larva culture tank and is used for hanging cherax quadricarinatus larvae; the oxygen pumping device is used for pumping oxygen into the water body; the filtering device is used for circularly filtering water. The cherax quadricarinatus larvae are hung in the larva culture tank in a concentrated mode for cultivation, and intensive management and large-scale cultivation of the cherax quadricarinatus larvae are achieved. The volume of the water body in the larva culture tank and the filtering device is controlled and extremely limited, so that the use amount of a nutrient solution in the water body is reduced, low-cost nutrient enrichment is conveniently realized, the immunity and stress resistance of the cherax quadricarinatus larva are improved at low cost, and large-scale culture is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, specifically to a redclaw crayfish larval rearing system. Background Technology

[0002] Shrimp larvae are small shrimp that have been hatched, usually only a few millimeters to a few centimeters long. They represent the initial stage of shrimp growth and are divided into marine shrimp larvae and freshwater shrimp larvae, each adapted to different aquatic environments. Through artificial breeding, a large number of high-quality, healthy shrimp larvae can be obtained for use in aquaculture to improve shrimp yield and quality.

[0003] Existing redclaw crayfish larval rearing systems suffer from low seed density, making intensive management and large-scale cultivation difficult. These systems are also bulky, consuming vast amounts of nutrients and failing to achieve low-cost seedling nutritional enhancement. Utility Model Content

[0004] The purpose of this invention is to provide an intensive redclaw crayfish larval rearing system.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows.

[0006] The redclaw crayfish larval rearing system includes: larval rearing tanks extending along the length of the system; hanging ropes extending along the length of the system, positioned above the water in the rearing tanks to suspend the larvae; an aeration device for oxygenating the water; and a filtration device for circulating and filtering the water.

[0007] Therefore, suspending redclaw crayfish larvae in larval culture tanks via centralized suspension enables intensive management and large-scale cultivation of redclaw crayfish larvae. The controlled and extremely limited water volume within the culture tanks and filtration devices reduces the amount of nutrient solution used, facilitating low-cost nutrient fortification and improving the immunity and resilience of redclaw crayfish larvae, thus promoting large-scale cultivation.

[0008] Furthermore, the juvenile redclaw crayfish are suspended by a hook and a rope.

[0009] Furthermore, insulated enclosures are used to enclose the larval culture tanks. Temperature control devices are used to regulate the water temperature.

[0010] Furthermore, the thermostat is either an air conditioner or a water heater.

[0011] Furthermore, the water supply inlet of the filtration device is located at the first end of the larval culture tank. A drain pipe extending along the height direction is provided at the second end of the larval culture tank opposite the first end. An overflow outlet is provided on the upper side of the drain pipe, and the lower end of the drain pipe is detachably fitted onto the drain outlet of the larval culture tank. The return inlet of the filtration device is connected to the drain outlet.

[0012] Furthermore, a return water tank is used to receive water discharged from the drain outlet. The return water outlet is connected to the outlet of the return water tank.

[0013] Furthermore, the filtration device includes a sedimentation tank, which comprises a primary sedimentation tank, a secondary sedimentation tank, and an overflow pipe disposed between the primary and secondary sedimentation tanks. A filter screen is installed inside the overflow pipe.

[0014] Furthermore, the filtration device includes a water pump, the pump's inlet being connected to the final stage sedimentation tank, and the pump's outlet being connected to the water supply outlet.

[0015] Furthermore, the oxygenation device includes an oxygenator, a trachea, and a nano-oxygenation tube, which extends along the length and is positioned on the side of the larval culture tank near the first end.

[0016] Furthermore, the aeration device also includes an auxiliary aeration pipe, which is connected to the gas pipe via a valve. The auxiliary aeration pipe is located on the side of the larval culture tank near the second end. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the concealed heat insulation room of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the juvenile culture tank of this utility model.

[0020] In the diagram: 1. Larval culture tank; 11. Hanging rope; 12. Water inlet; 13. Drain outlet; 2. Oxygenation device; 21. Oxygenator; 22. Air pipe; 23. Nano-oxygenation pipe; 24. Auxiliary oxygenation pipe; 3. Filtration device; 31. Sedimentation tank; 311. Primary sedimentation tank; 312. Secondary sedimentation tank; 32. Overflow pipe; 33. Water pump; 34. Return water outlet; 4. Drain pipe; 41. Overflow outlet; 5. Return water tank; 6. Insulated room. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, 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 the embodiments of this utility model.

[0023] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0024] like Figure 1-3 As shown, the redclaw crayfish larval rearing system includes a larval rearing tank 1 extending along the length of the system. A hanging rope 11 extends along the length of the system, is installed inside the larval rearing tank 1, and is positioned above the water in the tank to suspend the redclaw crayfish larvae. An aeration device 2 is used to oxygenate the water. A filtration device 3 is used to circulate and filter the water.

[0025] Redclaw crayfish larvae are centrally suspended within larval culture tank 1 for cultivation, enabling intensive management and large-scale breeding of redclaw crayfish larvae. The water volume within larval culture tank 1 and the filtration device 3 is controlled and extremely limited, which helps reduce the amount of nutrient solution used in the water, facilitating low-cost nutrient fortification and improving the immunity and stress resistance of redclaw crayfish larvae at low cost, thus benefiting large-scale breeding.

[0026] It also includes a support frame on which four larval culture tanks 1 can be installed, which are distributed in pairs along the height. This three-dimensional layout effectively utilizes vertical space, allowing more larval culture tanks 1 to be accommodated within a limited ground area, thereby increasing the number of larvae to be cultured and further realizing intensive management and large-scale cultivation.

[0027] Preferably, the hanging rope 11 suspends the redclaw crayfish larvae via a hook and the rope body.

[0028] The rope can carry a large number of redclaw crayfish larvae through their tail hooks, which is beneficial for further increasing the seedling density and intensification.

[0029] Preferably, an insulated chamber 6 is used to enclose the larval culture tank 1. A temperature control device is used to regulate the water temperature.

[0030] Reduce the interference of external environmental temperature on the cultivation process, and improve cultivation efficiency and quality.

[0031] Preferably, the thermostat is an air conditioner or a water heater.

[0032] Advantages of air conditioning: It regulates water temperature by adjusting air temperature, has a simple and reliable structure, is easy to maintain, and can regulate the temperature of the staff's activity area at the same time, which helps to reduce temperature control costs.

[0033] Advantages of water heaters: Directly regulate water temperature, concentrate energy, and are more energy-efficient.

[0034] Preferably, the water supply port 12 of the filter device 3 is located at the first end of the larval culture tank 1. A drain pipe 4 extending along the height direction is provided at the second end of the larval culture tank 1 opposite to the first end. An overflow port 41 is provided on the upper side of the drain pipe 4, and the lower end of the drain pipe 4 is detachably sleeved on the drain port 13 of the larval culture tank 1. The return water port 34 of the filter device 3 is connected to the drain port 13.

[0035] A valve for regulating water flow is installed at water inlet 12.

[0036] The height of the overflow outlet 41 can be used to adjust the water depth.

[0037] After removing the overflow outlet 41, the red claw crayfish larvae can be directly captured through the filter screen at the drain outlet 13, resulting in extremely high capture efficiency.

[0038] Preferably, the return water tank 5 is used to receive water discharged from the drain outlet 13. The return water outlet 34 is connected to the outlet of the return water tank 5.

[0039] The juvenile redclaw crayfish that fail to be caught by the filter fall into the return water tank 5, thus preventing the juvenile redclaw crayfish from falling directly into the filter device 3.

[0040] It also includes a plug, the lower end of which is detachably fitted onto the return water inlet 34. The juvenile red claw crayfish that failed to be caught can be intercepted in the return water tank 5, preventing them from being directly discharged into the filter device 3, making it easier to catch them again. After the plug is removed, the water in the return water tank 5 can flow into the filter device 3.

[0041] It also includes a sewage pipe, which is connected to the return water tank 5 via a valve. The sewage pipe is located on the side of the return water tank 5 away from the return water inlet 34 and is used to discharge wastewater.

[0042] Preferably, the filtration device 3 has a sedimentation tank 31, which includes a primary sedimentation tank 311, a secondary sedimentation tank 312, and an overflow pipe 32 disposed between the primary sedimentation tank 311 and the secondary sedimentation tank 312. A filter screen is disposed inside the overflow pipe 32.

[0043] It also includes a three-stage sedimentation tank. An overflow pipe 32 is also provided between the two-stage sedimentation tank 312 and the three-stage sedimentation tank. A corresponding filter screen is provided inside the overflow pipe 32.

[0044] The filter screen is used to filter impurities and improve water quality. Through multi-stage filtration, the water quality is significantly improved, and the survival conditions of red claw crayfish larvae are enhanced.

[0045] Preferably, the filtration device 3 includes a water pump 33, the water pump 33’s inlet is connected to the final stage sedimentation tank, and the water pump 33’s outlet is connected to the water supply port 12.

[0046] The water pump 33 is installed at the last stage sedimentation tank, that is, the water pump 33 draws water from the last stage sedimentation tank.

[0047] The sedimentation tank 31 provides a buffer space for the red claw crayfish larvae that failed to be intercepted upstream, reducing the risk of the red claw crayfish larvae being strangled by the water pump 33.

[0048] Preferably, the oxygenation device 2 includes an oxygenator 21, an air pipe 22, and a nano-oxygenation tube 23. The nano-oxygenation tube 23 extends along the length direction and is disposed on the side of the larval culture tank 1 near the first end.

[0049] The air bubbles flow from the first end to the second end of the larval culture tank 1 with the water flow, which is conducive to uniform oxygen supply.

[0050] Preferably, the oxygenation device 2 further includes an auxiliary oxygenation pipe 24, which is connected to the gas pipe 22 via a valve. The auxiliary oxygenation pipe 24 is disposed on the side of the larval culture tank 1 near the second end.

[0051] Used to assist in oxygen supply and further improve the uniformity of oxygen supply.

[0052] The above is a detailed description of the present invention in conjunction with specific embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, any equivalent substitutions or obvious modifications made without departing from the concept of the present invention, and which have the same performance or use, should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. A redclaw crayfish larval rearing system, characterized in that: The larval culture tank (1) extends along the length of the redclaw crayfish larval culture system; A hanging rope (11) extends along the length direction, is set in the larval culture tank (1), and is located on the upper side of the water in the larval culture tank (1), for hanging red claw crayfish larvae; Oxygenation device (2) is used to oxygenate the water body; A filtration device (3) is used to circulate and filter the water.

2. The redclaw crayfish larval rearing system according to claim 1, characterized in that: The hanging rope (11) suspends the red swamp crayfish larvae via hooks and rope body.

3. The redclaw crayfish larval rearing system according to claim 1, characterized in that: Insulated room (6) is used to enclose the larval culture tank (1); A thermostat is used to regulate the temperature of the water.

4. The redclaw crayfish larval rearing system according to claim 3, characterized in that: The thermostat is an air conditioner or a water heater.

5. The redclaw crayfish larval rearing system according to claim 4, characterized in that: The water inlet (12) of the filter device (3) is located at the first end of the larval culture tank (1); The second end of the larval culture tank (1) opposite to the first end is provided with a drain pipe (4) extending in the height direction. The upper side of the drain pipe (4) is provided with an overflow port (41). The lower end of the drain pipe (4) is detachably sleeved on the drain port (13) of the larval culture tank (1). The return water inlet (34) of the filter device (3) is connected to the drain outlet (13).

6. The redclaw crayfish larval rearing system according to claim 5, characterized in that: A return water tank (5) is used to receive the water discharged from the drain outlet (13); The return water inlet (34) is connected to the outlet of the return water tank (5).

7. The redclaw crayfish larval rearing system according to claim 5, characterized in that: The filtration device (3) has a sedimentation tank (31), which includes a primary sedimentation tank (311), a secondary sedimentation tank (312), and an overflow pipe (32) disposed between the primary sedimentation tank (311) and the secondary sedimentation tank (312). A filter screen is installed inside the overflow pipe (32).

8. The redclaw crayfish larval rearing system according to claim 7, characterized in that: The filtration device (3) includes a water pump (33), the water pump (33) is connected to the final stage sedimentation tank, and the water pump (33) is connected to the water supply port (12).

9. The redclaw crayfish larval rearing system according to claim 5, characterized in that: The oxygenation device (2) includes an oxygenator (21), an air pipe (22) and a nano oxygenation tube (23), the nano oxygenation tube (23) extending along the length direction and disposed on the side of the larval culture tank (1) near the first end.

10. The redclaw crayfish larval rearing system according to claim 9, characterized in that: The oxygenation device (2) also includes an auxiliary oxygenation pipe (24), which is connected to the gas pipe (22) via a valve; The auxiliary oxygenation tube (24) is located on the side of the larval culture tank (1) near the second end.

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