Oxygenation apparatus for freshwater aquaculture

Abstract

The utility model discloses an oxygen -increasing equipment for freshwater aquaculture belongs to aquaculture technical field, including mounting panel, is provided with buoyancy assembly, anchoring subassembly, impeller subassembly and agitating subassembly on the mounting panel, the motor of mounting panel fixed protection cover is installed, the rotatory rod fixed connection of motor output is vertically downward through protection cover and mounting panel, impeller subassembly includes a with rotatory rod transmission connection's water -agitating impeller, water -agitating impeller is used to carry out oxygen -increasing to surface water, agitating subassembly includes a with rotatory rod transmission connection's agitating board, and agitating board is used to carry out reciprocating swing under water to agitate middle and lower water body, after motor starts, through rotatory rod simultaneously drive impeller subassembly and agitating subassembly work. The utility model designs a kind of structure integration, and it is convenient to install, and can simultaneously effectively oxygen -increasing to surface and middle and lower water body's oxygen -increasing equipment.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to oxygenation equipment for freshwater aquaculture. Background Technology

[0002] Aquaculture is an important part of the agricultural economy. Its output and benefits are highly dependent on the ecological environment quality of the aquaculture water. In freshwater aquaculture, especially in high-density aquaculture, the dissolved oxygen content of the water becomes a key factor that limits the stocking density and affects the survival rate, growth rate and feed conversion rate of aquaculture organisms.

[0003] Due to the limited natural reoxygenation capacity of water bodies, coupled with the oxygen consumption from the respiration of cultured organisms and the decomposition of organic matter such as uneaten feed and feces, aquaculture ponds, especially the middle and lower water layers, are prone to oxygen deficiency. This can lead to cultured organisms surfacing, declining physical condition, slow growth, and even large-scale mortality. To address these issues, artificial aeration equipment has been widely used in aquaculture. Common aeration equipment currently includes impeller aerators, paddlewheel aerators, jet aerators, and microporous aerators.

[0004] Impeller and paddlewheel aerators mainly increase oxygenation by tapping or stirring the surface water to increase the contact area between the water and the air. These devices are effective in increasing dissolved oxygen in surface water and can generate some water circulation. However, their depth of action is limited, making it difficult to effectively improve the oxygen deficiency problem at the bottom of the pond. At the same time, their ability to stir up bottom sludge is relatively weak.

[0005] While jet aerators can deliver air-water mixtures to deeper water layers and help improve dissolved oxygen distribution in local areas, their effective range is limited. For larger ponds, multiple installations are required, resulting in higher energy consumption.

[0006] Microporous aeration systems deliver oxygen evenly to the entire water body from the bottom, which is highly efficient and can significantly improve the distribution of dissolved oxygen in the water. However, the installation process is relatively complicated, requiring the laying of a large area of ​​pipelines, and the blower usually needs to be fixed on the bank, occupying a certain amount of space. In addition, it is difficult to retrofit or modify existing ponds. Utility Model Content

[0007] The purpose of this invention is to design an oxygenation device that is structurally integrated, easy to install, and capable of effectively oxygenating both the surface and lower water layers simultaneously.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: an oxygenation device for freshwater aquaculture, comprising a mounting plate, wherein the mounting plate is provided with a buoyancy component, an anchoring component, an impeller component and an agitation component; An electric motor is installed inside the protective cover fixed by the mounting plate, and a rotating rod fixedly connected to the output end of the electric motor passes vertically downward through the protective cover and the mounting plate; The impeller assembly includes a water-stirring impeller that is drivenly connected to the rotating rod. The water-stirring impeller is used to oxygenate the surface water. The stirring assembly includes a stirring plate that is drivenly connected to the rotating rod. The stirring plate is used to reciprocate underwater to stir the middle and lower layers of water. After the motor is started, it drives the impeller assembly and the agitator assembly to work simultaneously through the rotating rod.

[0009] As a further description of the above technical solution: the buoyancy assembly includes an airbag disposed on the outer ring of the mounting plate, and several floats fixedly connected to the mounting plate by connecting rods.

[0010] As a further description of the above technical solution: the anchoring assembly includes an anchoring rod that passes through the connecting rod.

[0011] As a further description of the above technical solution: the impeller assembly includes a main gear fixedly sleeved on the outer ring of the rotating rod and located inside the protective cover, and the secondary gear meshing with the main gear is fixed with a rotating shaft.

[0012] As a further description of the above technical solution: the rotating shaft extends out of the protective cover and is fixed to the water-stirring impeller, and the support column sleeved on the outer ring of the rotating shaft is fixed to the mounting plate.

[0013] As a further description of the above technical solution: the agitation assembly includes a rotating plate fixed to the end of the rotating rod, and a reciprocating rod rotatably mounted on the bottom of the mounting plate has a rectangular hole.

[0014] As a further description of the above technical solution: the end of the eccentric rod of the rotating plate is movably disposed in the rectangular hole, and the stirring plate is fixed to the other end of the reciprocating rod away from its axis of rotation.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: By using a single power source to drive two different aeration and agitation devices, a highly efficient water aeration function is achieved. The upper agitator impeller relies on high-speed rotation to powerfully beat and propel the surface water, thereby significantly increasing the oxygen content of the surface water. The lower agitator plate uses a fan-shaped reciprocating oscillation to gently and continuously agitate the middle and lower layers of water, effectively improving the water flow of the middle and lower layers. Attached Figure Description

[0016] Figure 1 A perspective view of the present invention is shown; Figure 2A bottom view of the present invention is shown; Figure 3 A cross-sectional view of the present invention is shown.

[0017] Legend: 10. Mounting plate; 11. Airbag; 12. Connecting rod; 13. Float; 14. Anchor rod; 15. Protective cover; 16. Motor; 17. Rotating rod; 18. Rotating plate; 181. Eccentric rod; 19. Reciprocating rod; 191. Rectangular hole; 20. Agitator plate; 21. Main gear; 22. Secondary gear; 23. Rotating shaft; 24. Agitator impeller; 25. Support column. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-3 This utility model provides a technical solution: an oxygenation device for freshwater aquaculture, including a mounting plate 10, on which a buoyancy component, an anchoring component, an impeller component and an agitation component are provided.

[0020] The buoyancy assembly includes an airbag 11 disposed on the outer ring of the mounting plate 10. Specifically, in order to enable the device to float safely and stably on the water surface, an annular airbag 11 is fixedly disposed on the outer ring of the mounting plate 10 to provide the necessary buoyancy and support.

[0021] Meanwhile, in order to further enhance the stability of the equipment, the mounting plate 10 is fixedly connected to the float 13 by multiple outwardly extending connecting rods 12, which realizes a larger contact area between the equipment and the water surface, thereby significantly improving the ability to resist wind and waves.

[0022] The anchoring assembly includes an anchoring rod 14 that passes through the connecting rod 12. Specifically, to ensure that the equipment remains fixed in a specific position in the aquaculture water and to avoid drifting, each connecting rod 12 is provided with an anchoring rod 14 that can be adjusted up and down. Its lower end can be inserted into the bottom soil layer of the pond to achieve anchoring.

[0023] The core power system of the equipment is installed above the mounting plate 10 and covered by a protective cover 15 to protect the internal electrical and transmission components from sun and rain. An electric motor 16 is installed in the upper cavity of the protective cover 15 as a power source.

[0024] The output end of the motor 16 is vertically downward, and a rotating rod 17 is fixed by a rotatable connection. The rotating rod 17 passes through the lower cavity of the protective cover 15 and the center hole of the mounting plate 10 in sequence, forming the power transmission structure for the operation of the equipment.

[0025] The impeller assembly includes a main gear 21 fixedly sleeved on the outer ring of the rotating rod 17 and located inside the protective cover 15. Specifically, the main gear 21 is fixedly welded to the outer ring of the rotating rod 17 in the lower chamber of the protective cover 15. On one side of the main gear 21, a horizontally arranged rotating shaft 23 is fixedly connected to the auxiliary gear 22 that meshes with it. One end of the rotating shaft 23 is mounted on the wall plate of the protective cover 15 by a bearing, and the other end extends out of the protective cover 15. To enhance the stability of the rotating shaft 23, a support column 25 is sleeved on its outer ring, and the bottom of the support column 25 is firmly connected to the mounting plate 10.

[0026] At the end of the rotating shaft 23 extending to the outside of the protective cover 15, a water-stirring impeller 24 is fixedly installed. The structure of the water-stirring impeller 24 is similar to that of a traditional waterwheel, consisting of multiple blades, and is specifically used to slap the water surface. When the motor 16 is started, the power is transmitted to the main gear 21 through the rotating rod 17. The main gear 21 then drives the meshing secondary gear 22 to rotate, thereby driving the rotating shaft 23 and the water-stirring impeller 24 at its end to rotate.

[0027] During rotation, the impeller 24 continuously lifts and slaps the water surface, effectively increasing the contact area between the water and the air, thereby efficiently dissolving oxygen in the water and achieving oxygenation of the surface water. In addition, the rotation of the impeller generates directional water flow, promoting the overall circulation of the aquaculture water.

[0028] The agitation assembly includes a rotating plate 18 fixed to the end of the rotating rod 17. Specifically, the rotating plate 18 is fixedly connected to the end of the rotating rod 17 below the mounting plate 10. A vertically downward eccentric rod 181 is fixedly installed on the surface of the rotating plate 18 at a position off-center. A reciprocating rod 19 is movably installed at the bottom of the mounting plate 10 via a rotating shaft. A rectangular hole 191 is provided on the rod body of the reciprocating rod 19.

[0029] During installation, the end of the eccentric rod 181 of the rotating plate 18 is inserted into the rectangular hole 191 of the reciprocating rod 19, and the other end of the reciprocating rod 19, that is, the end away from its axis of rotation, is fixedly connected to a stirring plate 20.

[0030] When the motor 16 drives the rotating rod 17 and the rotating plate 18 to rotate, the eccentric rod 181 will make a circular motion. Since the eccentric rod 181 is located in the rectangular hole 191 of the reciprocating rod 19, its circular motion will drive the reciprocating rod 19 to make a fan-shaped reciprocating swing around its own axis through the rectangular hole 191. This swinging motion is further transmitted to the stirring plate 20, so that the stirring plate 20 performs a large-range reciprocating stirring motion underwater.

[0031] By replacing the rotating shafts of the rotating rod 17 and the reciprocating rod 19 with different lengths, the depth of the stirring plate 20 in the water can be adjusted. At the same time, by adjusting the size of the stirring plate 20, the water at different depths in the lower and middle layers of the water body can be stirred.

[0032] This stirring method can fully agitate the deeper water layers in the pond, promote convection and exchange between the upper and lower water layers, bring the oxygen-deficient water and harmful gases from the bottom to the surface, and introduce oxygen-rich water from the surface to the bottom, thereby achieving three-dimensional oxygenation of the water. At the same time, this process can also effectively reduce the excessive deposition of feed and excrement at the bottom of the pond.

[0033] By using a single power source to drive two different aeration and agitation devices, a highly efficient water aeration function is achieved. The upper agitator impeller 24 relies on high-speed rotation to powerfully beat and propel the surface water, thereby significantly increasing the oxygen content of the surface water. The lower agitator plate 20 uses a fan-shaped reciprocating oscillation to gently and continuously agitate the middle and lower layers of water, effectively improving the water flow of the middle and lower layers.

[0034] This working mechanism combines the advantages of surface oxygenation and bottom water circulation. It not only accelerates the vertical convection of the water body, but also transports oxygen-rich water to the bottom layer, while bringing back the oxygen-deficient water and harmful substances from the bottom layer to the surface for exchange and release. This design successfully achieves all-round oxygenation of the aquaculture water body, and its effect is significantly better than traditional single-function oxygenation equipment.

[0035] By designing a gear transmission mechanism and a crank-connecting rod mechanism, a single electric motor 16 can simultaneously drive the water-stirring impeller 24 and the agitator plate 20, enabling the simultaneous operation of both functions. This simplifies the overall structure of the equipment, reduces manufacturing costs, and significantly reduces the total installed power and energy consumption compared to a solution using two independent functional devices. This improves energy efficiency and aligns with the modern development trend of energy conservation and environmental protection.

[0036] The device is designed as a floating integrated machine that floats on the water surface by means of its own airbag 11 and float 13. There is no need to build complicated onshore facilities or lay underwater pipes. During installation, the device only needs to be placed in the water and fixed by the anchor rod 14. The operation is simple and efficient, and it is especially suitable for the aeration upgrade of existing ponds.

[0037] In addition, the adjustable anchor rod 14 equipped with the equipment can adapt to pond environments with different water depths. The equipment continuously agitates the bottom water of the pond through the stirring plate 20, which effectively prevents the excessive accumulation of organic waste such as uneaten feed and feces at the bottom and the resulting anaerobic fermentation, thereby significantly reducing the generation of harmful substances such as ammonia nitrogen, nitrite and hydrogen sulfide, improving the pond bottom environment and optimizing water quality conditions.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An aeration device for freshwater aquaculture, comprising a mounting plate (10), characterized in that: The mounting plate (10) is provided with a buoyancy assembly, an anchoring assembly, an impeller assembly and an agitation assembly; An electric motor (16) is installed inside the protective cover (15) fixed by the mounting plate (10). The rotating rod (17) fixedly connected to the output end of the electric motor (16) passes vertically downward through the protective cover (15) and the mounting plate (10). The impeller assembly includes a water-stirring impeller (24) that is hygienically connected to the rotating rod (17). The water-stirring impeller (24) is used to oxygenate the surface water. The stirring assembly includes a stirring plate (20) that is hygienically connected to the rotating rod (17). The stirring plate (20) is used to reciprocate underwater to stir the middle and lower layers of water. After the motor (16) is started, it drives the impeller assembly and the agitation assembly to work simultaneously through the rotating rod (17).

2. The oxygenation equipment for freshwater aquaculture according to claim 1, characterized in that: The buoyancy assembly includes an airbag (11) disposed on the outer ring of the mounting plate (10), and several floats (13) fixedly connected to the mounting plate (10) by connecting rods (12).

3. The oxygenation equipment for freshwater aquaculture according to claim 2, characterized in that: The anchoring assembly includes an anchoring rod (14) that passes through the connecting rod (12).

4. The oxygenation equipment for freshwater aquaculture according to claim 1, characterized in that: The impeller assembly includes a main gear (21) fixedly sleeved on the outer ring of the rotating rod (17) and located inside the protective cover (15), and a secondary gear (22) meshed with the main gear (21) is fixed with a rotating shaft (23).

5. The oxygenation equipment for freshwater aquaculture according to claim 4, characterized in that: The rotating shaft (23) extends out of the protective cover (15) and is fixed to the water agitator (24). The support column (25) sleeved on the outer ring of the rotating shaft (23) is fixed to the mounting plate (10).

6. The oxygenation equipment for freshwater aquaculture according to claim 1, characterized in that: The agitation assembly includes a rotating plate (18) fixed to the end of the rotating rod (17), and a reciprocating rod (19) rotatably mounted on the bottom of the mounting plate (10) has a rectangular hole (191).

7. The oxygenation equipment for freshwater aquaculture according to claim 6, characterized in that: The end of the eccentric rod (181) of the rotating plate (18) is movably disposed in the rectangular hole (191), and the stirring plate (20) is fixed to the other end of the reciprocating rod (19) away from its axis of rotation.

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