Juvenile fish cultivation device and three-dimensional juvenile fish culture system

Abstract

The utility model provides a juvenile fish cultivation device and a three-dimensional juvenile fish cultivation system, and solves the problems that in an existing juvenile fish cultivation system, mechanical groove dividing operation influences juvenile fish growth, and a fixed cultivation groove is difficult to meet the juvenile fish growth requirement. According to the technical scheme, the device comprises a first breeding tank, a second breeding tank, a liquid level adjusting assembly and a sewage draining and filtering assembly; a water outlet and an overflow port are formed in the bottom of the second breeding tank, the first breeding tank is detachably mounted in the second breeding tank, and the bottom wall of the first breeding tank is of a permeable structure; the liquid level adjusting assembly comprises an overflow pipe, and the overflow pipe is arranged in an overflow opening in the bottom of the second breeding tank. The sewage draining and filtering assembly comprises a filter screen and a second connector, the second connector is connected with a water outlet in the bottom of the second breeding tank, and the filter screen is arranged in the second connector.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, specifically to a juvenile fish rearing device and a three-dimensional juvenile fish rearing system. Background Technology

[0002] In fish aquaculture, artificial aquaculture has become popular to ensure survival rates. Although survival rates and yields have increased, many drawbacks still exist. For example, in the fry growth stage, after hatching, fry need to be transferred to dedicated fry growth tanks for cultivation and growth. Once they reach a certain size, they need to be separated into different tanks for further rearing. Fish at these two stages are relatively vulnerable and require control over water supply, sewage discharge, aeration, feeding, and disease prevention. The farming model needs to be adjusted in a timely manner until they reach the standard for fry production and are then offered to the market. Existing farming methods are developing towards this more refined and intelligent control model, and the functions of various aspects of farming facilities also need to be improved in a timely manner. The design of farming equipment also needs to be optimized and innovated.

[0003] Young fish are relatively small and are initially raised in small tanks to facilitate timely removal of diseased fish, prevent the spread of disease, and make feeding and waste disposal easier. When the young fish are separated into different tanks after reaching a certain size, there may be an adaptation period for the fry, which may affect the growth rate and survival rate of the fry. The size design of the rearing tank determines the rearing ratio and also affects the growth and survival rate of the fry.

[0004] With the accelerating intensification of aquaculture, traditional seedling facilities have gradually revealed their insufficient technological adaptability. Although current aquaculture systems have made progress in basic environmental control, the following technical bottlenecks still exist in the two key stages of juvenile development—the newly hatched juvenile rearing period and the transition period between different tanks:

[0005] Adaptation problems during tank separation: Mechanized tank separation operations cause continuous physiological stress to juvenile fish, affecting their growth rhythm; Inappropriate spatial configuration: Fixed culture tanks are difficult to match the dynamic growth needs of juvenile fish, restricting the uniformity of group growth. Utility Model Content

[0006] This invention provides a juvenile fish rearing device that solves the problems in existing juvenile fish rearing systems, such as the impact of mechanized tank division on juvenile fish growth and the difficulty of matching fixed rearing tanks with the growth needs of juvenile fish.

[0007] The technical solution of this utility model includes:

[0008] First aquaculture tank, second aquaculture tank, liquid level regulating component, and sewage filtration component;

[0009] The second breeding tank is equipped with a drain outlet and an overflow outlet at the bottom. The first breeding tank can be detachably installed inside the second breeding tank. The bottom wall of the first breeding tank is a water-permeable structure.

[0010] The liquid level regulating component includes an overflow pipe, which is located in the overflow port at the bottom of the second aquaculture tank.

[0011] The sewage filtration assembly includes a filter screen and a second connector. The second connector is connected to the drain outlet at the bottom of the second aquaculture tank, and a filter screen is installed inside the second connector.

[0012] Preferably, the drain outlet is located at the center of the bottom of the second aquaculture tank, and a protrusion is provided on each side of the drain outlet. The upper surface of the protrusion is an inclined surface that slopes downward from the side wall of the second aquaculture tank toward the drain outlet. Each protrusion holds a set of first aquaculture tanks.

[0013] Preferably, the first aquaculture tank includes an upper frame, a lower frame, a permeable structure, and screws. The permeable structure is a filter cloth, which is sandwiched between the upper frame and the lower frame. The upper frame and the lower frame are fixed by screws.

[0014] Preferably, the upper frame of the first aquaculture tank is a rectangular frame formed by connecting four baffles end to end. The lower part of the rectangular frame is folded outward to form a flange. The structure of the lower frame is adapted to the flange structure of the upper frame. Both the flange structure and the lower frame are provided with multiple connecting holes, and the connecting holes on the flange structure correspond one-to-one with the connecting holes on the lower frame. The upper frame and the lower frame are fixed by screws passing through the connecting holes.

[0015] Preferably, the liquid level regulating assembly further includes a first connector, which is fixed inside the overflow port, and the overflow pipe is located inside the second aquaculture tank and connected to the first connector.

[0016] Preferably, one end of the second connector is connected to the drain outlet, and the other end is connected to a drain pipe.

[0017] A three-dimensional juvenile fish farming system, characterized in that it includes juvenile fish rearing devices and a support frame, wherein the support frame has multiple layers, and multiple sets of the juvenile fish rearing devices are placed side by side on each layer.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. The design of the detachable first culture tank allows for non-destructive separation of fry. After the fry grow to a certain size, the first culture tank can be removed, and the second stage of culture can be carried out in the second culture tank. This can meet the needs of fry at different stages to be cultured in the same culture tank, reducing stress and growth stagnation in fry caused by mechanical separation.

[0020] 2. By replacing the overflow pipe with one of different lengths, water level regulation can be adjusted to meet the needs of different growth stages, which can reduce stress response in juvenile fish caused by water changes.

[0021] 3. The system employs a dual filtration system consisting of a first-stage aquaculture tank filter cloth and a drain outlet filter screen, forming a graded filtration system. This prevents juvenile fish from escaping and avoids uneaten food clogging the pipes. Furthermore, the filter cloth and filter screen are designed to be detachable, which reduces replacement costs and extends service life.

[0022] 4. Combining the juvenile fish rearing device with the support frame to form a three-dimensional combined structure design can increase the stocking density per unit area through vertical or horizontal expansion. Attached Figure Description

[0023] Figure 1 An exploded view of the overall structure provided for an embodiment of this utility model;

[0024] Figure 2 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0025] Figure 3 A top view of the overall structure provided for an embodiment of this utility model;

[0026] Figure 4 A top view of the second aquaculture tank provided in an embodiment of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the second aquaculture tank provided in an embodiment of the present utility model;

[0028] Figure 6 A three-dimensional layout diagram of the aquaculture system provided in an embodiment of this utility model.

[0029] The attached figures are labeled as follows:

[0030] 1. First breeding tank; 11. Upper frame; 12. Filter cloth; 13. Lower frame; 14. Screw; 2. Second breeding tank; 31. Overflow pipe; 32. First connector; 41. Filter screen; 42. Second connector. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0032] Example 1

[0033] like Figure 1As shown, the technical solution of this utility model includes: a first breeding tank 1, a second breeding tank 2, a liquid level regulating component, and a sewage discharge and filtration component; the second breeding tank 2 is provided with a drain outlet and an overflow outlet at its bottom; the first breeding tank 1 is detachably installed inside the second breeding tank 2; the liquid level regulating component includes an overflow pipe 31, which is disposed in the overflow outlet at the bottom of the second breeding tank 2; the sewage discharge and filtration component includes a filter screen 41 and a second connector 42, which is connected to the drain outlet at the bottom of the second breeding tank 2, and the filter screen 41 is disposed inside the second connector.

[0034] In this embodiment, protrusions are provided on both sides of the drain outlet. The upper surface of the protrusion is an inclined surface that slopes downward from the side wall of the second breeding tank 2 towards the drain outlet. A set of first breeding tanks 1 is placed on each protrusion. The drain outlet is located at the lowest point of the inclined surface of the protrusion between the two first breeding tanks 1, so that the inclined surface guides the dirt to concentrate towards the drain outlet. Combined with the filter screen, the sewage is discharged without power.

[0035] The first aquaculture tank 1 includes an upper frame 11, a lower frame 13, a filter cloth 12, and screws 14. The filter cloth 12 is sandwiched between the upper frame 11 and the lower frame 13 and locked in place by the screws 14. It is used to support juvenile fish and conduct initial aquaculture. In this embodiment, the filter cloth 12 is made of nylon mesh with a pore size that is adapted to the size of the juvenile fish and avoids clogging. The upper frame 11 of the first aquaculture tank 1 is a rectangular frame formed by connecting four baffles end to end. The lower part of the rectangular frame is folded outward to form a flange. The size of the lower frame 13 is adapted to the flange structure. Both the flange structure and the lower frame 13 are provided with multiple connecting holes (preferably, one side of the connecting hole of the upper frame and the lower frame is a through hole and the other side is a threaded hole, which is convenient for screw locking). The connecting holes on the flange structure correspond one-to-one with the connecting holes on the lower frame 13. The upper frame 11 and the lower frame 13 are connected by screws 14 passing through the connecting holes. To make the structure of the first aquaculture tank more stable, a reinforcing rib is also provided between the rectangular frame and the flange structure to prevent the frame from deforming under excessive pressure.

[0036] The liquid level regulating assembly also includes a first connector 32, which is fixed inside the overflow port. The first connector 32 and the overflow pipe 31 are connected by a union, for example, the overflow pipe is directly inserted into the first connector from top to bottom, and the outer diameter of the overflow pipe is equal to the inner diameter of the first connector, so that the pipe can be sealed when the overflow pipe is inserted into the first connector. When liquid level regulation is required, the overflow pipe can be directly pulled out and replaced with an overflow pipe of a different length and reinserted into the first connector. Alternatively, the overflow pipe and the first connector can be connected by a thread, which can also achieve quick replacement of overflow pipes of different lengths, thereby achieving the purpose of regulating the liquid level. In this embodiment, the lower end of the first connector is connected to a drain pipe, and a gate valve (such as a solenoid ball valve) can be installed on the drain pipe.

[0037] One end of the second connector 42 is connected to the drain outlet, and the other end is also connected to a separate drain pipe, on which a gate valve (such as a solenoid ball valve) is also installed. A filter screen 41 is installed inside the second connector 42 to prevent juvenile fish from entering the drain pipe.

[0038] like Figure 6 As shown, the size of the second culture tank 2 is based on the population density requirements of the juvenile fish growth stage, which determines the matching ratio between the culture tank and the number of fry. Two first culture tanks 1 can be matched in a single second culture tank 2.

[0039] During installation, this device can be flexibly arranged and combined according to the site conditions. First, the first breeding tank is placed in the designated location; then, the liquid level adjustment component and the sewage discharge and filtration component are installed and connected to the overflow pipe and the drain pipe respectively. Aeration pipe and water inlet pipe are arranged in the tank and linked with the PLC controller to realize timed sewage discharge (the linkage control of the electromagnetic ball valve, water inlet pipe and aeration pipe with the PLC controller are all existing technologies and are not the protection content of this application, so they will not be described in detail here). Finally, the second breeding tank is assembled and placed directly in the first breeding tank.

[0040] After assembly, connect an overflow pipe of appropriate length to achieve a suitable water depth; turn on the aeration device to ensure the oxygen content of the water; and use PLC control to perform timed and fixed-point water intake and sewage discharge to ensure water cleanliness and temperature.

[0041] After the fry have grown to a certain size, the first rearing tank is removed, cleaned and disinfected, and then kept for the next rearing. The fry continue to be raised in the second rearing tank, thus achieving the dual function of one tank. This meets the growth environment requirements of fry at different stages while reducing stress and growth stagnation in fry caused by mechanical tank separation.

[0042] Example 2

[0043] This embodiment provides a three-dimensional juvenile fish farming system. The support frame is set as a multi-layer structure, and multiple sets of juvenile fish cultivation devices from Embodiment 1 are placed side by side on each layer of the support frame to realize the horizontal and vertical combination of the juvenile fish cultivation devices. The above operation is repeated to form a three-dimensional farming system.

[0044] 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.

Claims

1. A juvenile fish rearing device, characterized by comprising: include: First aquaculture tank, second aquaculture tank, liquid level regulating component, and sewage filtration component; The second breeding tank is equipped with a drain outlet and an overflow outlet at the bottom. The first breeding tank can be detachably installed inside the second breeding tank. The bottom wall of the first breeding tank is a water-permeable structure. The liquid level regulating component includes an overflow pipe, which is located in the overflow port at the bottom of the second aquaculture tank; The sewage filtration assembly includes a filter screen and a second connector. The second connector is connected to the drain outlet at the bottom of the second aquaculture tank, and a filter screen is installed inside the second connector.

2. The juvenile fish rearing device according to claim 1, wherein The drain outlet is located at the center of the bottom of the second aquaculture tank. A protrusion is provided on each side of the drain outlet. The upper surface of the protrusion is an inclined surface that slopes downward from the side wall of the second aquaculture tank toward the drain outlet. A set of the first aquaculture tanks is placed on each protrusion.

3. The juvenile fish rearing device according to claim 1, wherein The first aquaculture tank includes an upper frame, a lower frame, a permeable structure, and screws. The permeable structure is a filter cloth, which is sandwiched between the upper frame and the lower frame. The upper frame and the lower frame are fixed by screws.

4. The juvenile fish rearing apparatus according to claim 3, wherein The upper frame of the first aquaculture tank is a rectangular frame formed by connecting four baffles end to end. The lower part of the rectangular frame is folded outward to form a flange. The structure of the lower frame is adapted to the flange structure of the upper frame. Both the flange structure and the lower frame are provided with multiple connecting holes, and the connecting holes on the flange structure correspond one-to-one with the connecting holes on the lower frame. The upper frame and the lower frame are fixed by screws inserted into the connecting holes.

5. The fish rearing device according to claim 1, wherein The liquid level regulating assembly also includes a first connector, which is fixed inside the overflow port, and the overflow pipe is located inside the second aquaculture tank and connected to the first connector.

6. The larva rearing device according to claim 1, wherein One end of the second connector is connected to the drain outlet, and the other end is connected to a drain pipe.

7. A three-dimensional larviculture system, characterized by: It includes a juvenile fish rearing device and a support frame, wherein the support frame has multiple layers, and multiple sets of the juvenile fish rearing devices are placed side by side on each layer.

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