An oxygen increasing device for breeding and hatching of prawn

Abstract

The utility model provides a kind of oxygenation device for to shrimp seed conservation and breeding, it is related to the shrimp fry breeding technical field, including oxygenation assembly, ventilation component and driving part constitute, wherein, oxygenation assembly is core part, is responsible for stirring water body and conveying oxygen, ventilation component is used to provide oxygen source, driving part then provides power for the rotation of hollow stirring shaft, by driving part driven hollow stirring shaft and multiple axial distribution flexible stirring rod synchronous rotation, realized in the three-dimensional agitation in whole water body depth range, flexible stirring rod produces irregular swing when rotating, both can effectively promote water flow, form horizontal and longitudinal circulation, avoid dissolved oxygen stratification and impurity deposition, again because its material soft, water flow shear force is greatly reduced, perfect avoid the mechanical damage to shrimp fry of small size, fragile shell, meet the harsh requirements of water body environment to whole cycle seed conservation and breeding.

Description

Technical Field

[0001] This utility model relates to the field of shrimp larvae farming technology, and in particular to an oxygenation device for shrimp seed preservation and breeding. Background Technology

[0002] Shrimp breeding and seedling preservation is a key link in the aquaculture industry chain. Its core technical requirements are to provide a stable and suitable dissolved oxygen environment for shrimp at different growth stages. Shrimp in the larval stage are small in size and have fragile shells, making them extremely sensitive to water flow impact and mechanical damage, requiring a gentle supply of dissolved oxygen. Adult shrimp or shrimp in the breeding stage tend to move in the lower water layer, requiring targeted supplementation of dissolved oxygen in the lower water layer. Furthermore, it is necessary to avoid water pollution or equipment damage caused by backflow of air throughout the entire cycle.

[0003] Currently, the commonly used aeration devices in shrimp breeding mainly adopt the structure of "fixed aeration disc" or "single oxygen outlet pipe". The aeration disc is fixed to the bottom of the pond and can only increase the dissolved oxygen in the lower layer of water. The upper larval activity area is prone to excess or deficiency of dissolved oxygen. Although the position of the single oxygen outlet pipe can be adjusted, the oxygen outlet hole is of uniform size and cannot achieve precise stratified aeration according to the oxygen requirements of different growth stages of shrimp. Larvae need a thin flow of low oxygen, while adult shrimp need a large flow of high oxygen, resulting in low dissolved oxygen efficiency and inhibiting the growth of shrimp at some stages.

[0004] Therefore, it is necessary to provide a new oxygenation device for shrimp breeding and seedling preservation to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an oxygenation device for shrimp breeding and seedling preservation.

[0006] This utility model provides an oxygenation device for shrimp breeding and seedling preservation, comprising: an oxygenation component, the oxygenation component including a hollow stirring shaft and at least three stirring rods, the top of the hollow stirring shaft being provided with a ventilation component for conveying oxygen and a drive component for driving the stirring shaft to rotate, the stirring rods being spaced apart along the axial direction of the hollow stirring shaft, one end of each stirring rod being connected to the side wall of the hollow stirring shaft, and the other end of each stirring rod extending away from the hollow stirring shaft, the stirring rods having a hollow internal structure and being connected to the interior of the hollow stirring shaft, the stirring rods having a flexible structure, the stirring rods having oxygenation holes of different sizes, and each connection point between the stirring rod and the hollow stirring shaft being provided with a one-way valve.

[0007] Preferably, the driving component is a low-speed motor, and a rotary connector is provided between the low-speed motor and the hollow stirring shaft. The rotating end of the rotary connector is fixedly connected to the top end of the hollow stirring shaft, and the output shaft of the low-speed motor is connected to the rotating end of the rotary connector.

[0008] Preferably, the ventilation assembly includes a ventilation tube and an oxygen tank, one end of the ventilation tube is fixedly connected to the oxygen tank, and the other end of the ventilation tube is connected to the fixed end of the rotary connector.

[0009] Preferably, the stirring rod includes an upper stirring rod, a middle stirring rod, and a lower stirring rod, with the upper stirring rod located above the middle stirring rod and the middle stirring rod located above the lower stirring rod.

[0010] Preferably, the diameter of the oxygenation hole on the upper stirring rod is smaller than the diameter of the oxygenation hole on the middle stirring rod, and the diameter of the oxygenation hole on the middle stirring rod is smaller than the diameter of the oxygenation hole on the lower stirring rod.

[0011] Preferably, the flexible structure is a soft silicone structure.

[0012] Compared with related technologies, the oxygenation device for shrimp breeding and seedling raising provided by this utility model has the following beneficial effects: By driving the hollow stirring shaft and multiple axially distributed flexible stirring rods to rotate synchronously, three-dimensional stirring is achieved throughout the entire water depth range. The flexible stirring rods generate irregular oscillations during rotation, which can effectively promote water flow, form lateral and longitudinal circulation, avoid dissolved oxygen stratification and impurity deposition, and, due to their soft material, greatly reduce water flow shear force, perfectly avoiding mechanical damage to the small and fragile shrimp larvae, thus meeting the stringent requirements of the aquatic environment for the entire cycle of seed preservation and breeding.

[0013] By opening oxygenation holes of different sizes on stirring rods at different heights, this invention achieves intelligent and differentiated oxygen release. Specifically, it can be designed according to the active water layer and oxygen demand characteristics of shrimp at different growth stages. The upper stirring rod has small-diameter oxygenation holes to release fine, slow-moving bubbles, which is suitable for juvenile shrimp. The middle and lower stirring rods have larger-diameter oxygenation holes to release bubbles with a larger flow rate and stronger upward force, which specifically meets the high dissolved oxygen demand of the lower water layer in the adult shrimp or breeding stage. This structure fundamentally overcomes the problems of single dissolved oxygen supply and low efficiency of traditional devices. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of an oxygenation device for shrimp breeding and seedling raising provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the oxygenation device. Figure 3 for Figure 1 The diagram shows the structure of the stirring shaft.

[0015] The following are the labels in the diagram: 1. Stirring shaft; 2. Stirring rod; 3. Aeration hole; 4. One-way valve; 5. Low-speed motor; 6. Rotary connector; 7. Ventilation pipe; 8. Oxygen tank; 9. Upper stirring rod; 10. Middle stirring rod; 11. Lower stirring rod. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of a preferred embodiment of an oxygenation device for shrimp breeding and seedling raising provided by this utility model; Figure 2 for Figure 1 The diagram shows a cross-sectional view of the oxygenation device. Figure 3 for Figure 1 The diagram shows the structure of the stirring shaft.

[0018] In the specific implementation process, such as Figures 1-3 As shown, an oxygenation device for shrimp breeding and seedling preservation mainly consists of an oxygenation component, an aeration component, and a drive component. The oxygenation component is the core part, responsible for stirring the water and delivering oxygen. The aeration component is used to provide the oxygen source, and the drive component provides power for the rotation of the hollow stirring shaft 1.

[0019] The hollow stirring shaft 1 is the central structure of the entire oxygenation assembly. Its interior is a hollow channel used to transport oxygen from the ventilation assembly. The top of the hollow stirring shaft 1 is provided with an interface for connecting to the ventilation assembly and the drive component. This device is provided with at least three stirring rods 2. In this embodiment, three stirring rods 2 are used as an example, namely the upper stirring rod 9, the middle stirring rod 10, and the lower stirring rod 11. The upper stirring rod 9 is located above the middle stirring rod 10, and the middle stirring rod 10 is located above the lower stirring rod 11. One end of each stirring rod 2 is connected to the side wall of the hollow stirring shaft 1, and the other end of the stirring rod 2 extends away from the hollow stirring shaft 1. The interior of the stirring rod 2 is also a hollow structure and is connected to the interior of the hollow stirring shaft 1 to form an oxygen transport channel.

[0020] The stirring rod 2 adopts a flexible structure, specifically a soft silicone structure. This flexible structure allows the stirring rod 2 to better adapt to the resistance of the water during rotation, reducing damage to the shrimp larvae. At the same time, it can swing more flexibly in the water, enhancing the stirring effect.

[0021] The stirring rod 2 has oxygenation holes 3 of different sizes. The diameter of the oxygenation holes 3 on the upper stirring rod 9 is smaller than that on the middle stirring rod 10, and the diameter of the oxygenation holes 3 on the middle stirring rod 10 is smaller than that on the lower stirring rod 11. The angle between the upper stirring rod 9 and the hollow stirring shaft 1 is 45 degrees upward. This angle allows the bubbles discharged from the oxygenation holes 3 to rise slowly along the inclined direction, prolonging the residence time of the bubbles in the water, while preventing the bubbles from directly impacting the upper water. The middle stirring rod 10 is set horizontally, which is suitable for the active water of the larvae. The system uses a layered structure to ensure that air bubbles diffuse evenly into the middle layer of water, balancing the dissolved oxygen concentration. The lower stirring rod 11 is angled downwards at 30 degrees to the hollow stirring shaft 1, allowing oxygen to be directly delivered to the activity areas of adult and breeding shrimp in the lower layer of water near the bottom of the pond. This also prevents air bubbles from violently impacting the bottom of the pond, thus preventing the stirring up of uneaten feed and feces. Each stirring rod 2 is equipped with a one-way valve 4 at the connection point between it and the hollow stirring shaft 1. The one-way valve 4 prevents water from flowing back into the hollow stirring shaft 1 and the aeration components, ensuring that oxygen can only flow from the hollow stirring shaft 1 to the stirring rod 2 and then into the water through the oxygenation hole 3.

[0022] The driving component is a low-speed motor 5, which has the characteristics of smooth operation and moderate torque. It is suitable for driving the hollow stirring shaft 1 to rotate slowly to achieve gentle stirring of the water and avoid excessive disturbance to the shrimp larvae. A rotary connector 6 is provided between the low-speed motor 5 and the hollow stirring shaft 1. The rotating end of the rotary connector 6 is fixedly connected to the top of the hollow stirring shaft 1. The output shaft of the low-speed motor 5 is connected to the rotating end of the rotary connector 6. When the low-speed motor 5 starts, it drives the hollow stirring shaft 1 to rotate through the rotary connector 6, thereby causing the stirring rod 2 to make circular motion in the water to achieve stirring of the water.

[0023] The ventilation assembly includes a ventilation pipe 7 and an oxygen tank 8. One end of the ventilation pipe 7 is fixedly connected to the oxygen tank 8, and the other end is connected to the fixed end of the rotary connector 6. The oxygen tank 8 stores compressed oxygen. The oxygen is transported through the ventilation pipe 7 to the fixed end of the rotary connector 6, then enters the hollow stirring shaft 1 and stirring rod 2, and finally is discharged into the water through the oxygenation hole 3 to provide sufficient oxygen for the shrimp larvae.

[0024] The working principle provided by this utility model is as follows: When using the aeration device for shrimp breeding and rearing, first place the device in a suitable position in the shrimp breeding and rearing pond, then start the low-speed motor 5. The low-speed motor 5 drives the hollow stirring shaft 1 to rotate through the rotary connector 6. The stirring rod 2 on the hollow stirring shaft 1 then makes a circular motion in the water, stirring the water. At the same time, open the valve of the oxygen tank 8, and oxygen enters the fixed end of the rotary connector 6 through the air pipe 7, and then enters the hollow stirring shaft 1 and stirring rod 2. Due to the action of the one-way valve 4, the oxygen can only flow in one direction and is discharged into the water from the oxygenation hole 3 on the stirring rod 2. The stirring rod 2 at different depths delivers an appropriate amount of oxygen to the water at the corresponding depth according to the different diameters of its oxygenation hole 3, thereby achieving uniform oxygenation of the water. Throughout the process, the flexible structure of the stirring rod 2 can adapt to the resistance of the water, reduce damage to the shrimp larvae, and provide a good oxygen environment for shrimp breeding and rearing.

[0025] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An aeration device for shrimp breeding and seedling raising, comprising an aeration component, characterized in that, The oxygenation assembly includes a hollow stirring shaft (1) and at least three stirring rods (2). The top of the hollow stirring shaft (1) is provided with a ventilation assembly for conveying oxygen and a drive component for driving the stirring shaft to rotate. The stirring rods (2) are distributed at intervals along the axial direction of the hollow stirring shaft (1). One end of each stirring rod (2) is connected to the side wall of the hollow stirring shaft (1), and the other end of each stirring rod (2) extends away from the hollow stirring shaft (1). The stirring rod (2) has a hollow structure inside and is connected to the inside of the hollow stirring shaft (1). The stirring rod (2) has a flexible structure. The stirring rod (2) is provided with oxygenation holes (3) of different specifications. A one-way valve (4) is provided at the connection between each stirring rod (2) and the hollow stirring shaft (1).

2. The oxygenation device for shrimp breeding and seedling raising according to claim 1, characterized in that, The driving component is a low-speed motor (5). A rotary connector (6) is provided between the low-speed motor (5) and the hollow stirring shaft (1). The rotating end of the rotary connector (6) is fixedly connected to the top end of the hollow stirring shaft (1). The output shaft of the low-speed motor (5) is connected to the rotating end of the rotary connector (6).

3. The oxygenation device for shrimp breeding and seedling raising according to claim 2, characterized in that, The ventilation assembly includes a ventilation pipe (7) and an oxygen tank (8). One end of the ventilation pipe (7) is fixedly connected to the oxygen tank (8), and the other end of the ventilation pipe (7) is connected to the fixed end of the rotary connector (6).

4. The oxygenation device for shrimp breeding and seedling raising according to claim 3, characterized in that, The stirring rod includes an upper stirring rod (9), a middle stirring rod (10) and a lower stirring rod (11). The upper stirring rod (9) is located above the middle stirring rod (10), and the middle stirring rod (10) is located above the lower stirring rod (11).

5. The oxygenation device for shrimp breeding and seedling raising according to claim 4, characterized in that, The diameter of the oxygenation hole (3) on the upper stirring rod (9) is smaller than the diameter of the oxygenation hole (3) on the middle stirring rod (10), and the diameter of the oxygenation hole (3) on the middle stirring rod (10) is smaller than the diameter of the oxygenation hole (3) on the lower stirring rod (11).

6. The oxygenation device for shrimp breeding and seedling raising according to claim 1, characterized in that, The flexible structure is a soft silicone structure.

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