A feeding and oxygenation device and method for a penaeus vannamei farming pond

Abstract

The application relates to a feeding and oxygenation device and method for a white shrimp (Penaeus vannamei) breeding pond, wherein the device comprises a carrier, a feeding mechanism and a mixing mechanism, and the feeding mechanism and the mixing mechanism are arranged on the carrier; the mixing mechanism comprises a gas supply part, a flow distribution seat and a mixing unit, the flow distribution seat is connected with the gas supply part and the mixing unit respectively, the gas supply part supplies gas to the mixing unit through the flow distribution seat; a first gas outlet is arranged on the flow distribution seat; the mixing unit comprises a water inlet disc, a mixing part, an impeller, a water disturbance unit and a water inlet shaft, the water inlet disc is fixed on the top of the mixing part, and a mixing cavity is arranged in the mixing part; the water inlet shaft can drive the impeller and the water disturbance unit to rotate around the axis of the water inlet shaft under the drive of the gas supply part; the device solves the problem that the air supplied into the breeding pond is in contact with water for a short time, the supplied air is immediately floated out of the water surface after being sprayed, and the oxygenation effect of the pond is poor.

Description

Technical Field

[0001] This invention relates to the field of aquaculture technology, specifically to a feeding and aeration device and method for Litopenaeus vannamei ponds. Background Technology

[0002] In aquaculture, especially in the farming of Pacific white shrimp, Pacific white shrimp, as a high-value aquatic product, has extremely sensitive requirements for water quality conditions, especially dissolved oxygen content. Sufficient dissolved oxygen is not only directly related to the growth rate, health status and survival rate of shrimp, but also affects the overall ecological balance of the farming pond.

[0003] A novel aquatic product feeding and oxygenation aquaculture device, disclosed in Chinese Patent Publication No. CN221178925U, includes a floating platform, a mixing tank, a solenoid valve, and a drive mechanism. The mixing tank is connected to the upper surface of the floating platform, and the solenoid valve is connected to the bottom of the mixing tank. A drive mechanism is located on the back of the floating platform. By placing the device in water, a cylinder is shortened, pulling a transmission rod and rotating a support rod, thus placing the paddle blades in the water. Then, a drive motor is activated to rotate the paddle blades, propelling the device forward. Further movement involves activating a servo motor to rotate an air cylinder within a housing, releasing the hose. The weight of the counterweight causes the air outlet plate to sink into the water. Once a suitable depth is reached, the servo motor is turned off, and an air pump is activated to introduce outside air into the housing through a rigid pipe, then into the air cylinder, and finally into the air outlet plate through the hose, thereby adjusting the oxygenation depth. The patent mainly involves filling water with air to increase oxygen levels. However, this method involves a short contact time between the air and the water, and the air floats to the surface immediately after being expelled, resulting in a poor oxygenation effect and a limited amount of dissolved oxygen, thus having an insignificant effect on water oxygenation. Summary of the Invention

[0004] One objective of this invention is to provide a feeding and oxygenation device for Litopenaeus vannamei ponds, which solves the problem that the contact time between air and water in traditional ponds is too short, and the air floats to the surface immediately after being expelled, resulting in poor oxygenation effect. Another objective is to provide an oxygenation method.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A feeding and oxygenation device for a pond for raising whiteleg shrimp includes a carrier, a feeding mechanism and a mixing mechanism, wherein the feeding mechanism and the mixing mechanism are both disposed on the carrier.

[0007] The mixing mechanism includes an air supply component, a flow divider, and a mixing unit. The flow divider is connected to the air supply component and the mixing unit respectively, and the air supply component supplies air to the mixing unit through the flow divider.

[0008] The distributor seat is provided with a first air outlet;

[0009] The mixing unit includes a water inlet plate, a mixing component, a turbofan, a water-dispersing unit, and a water inlet shaft. The water inlet plate is fixed to the top of the mixing component, and a mixing chamber is formed inside the mixing component. The water inlet shaft is disposed in the mixing chamber and is rotatably connected to the water inlet plate on the same axis. The turbofan and the water-dispersing unit are coaxially mounted on the water inlet shaft. The water inlet shaft can drive the turbofan and the water-dispersing unit to rotate around the axis of the water inlet shaft under the drive of the air supply component.

[0010] The water inlet plate has several water inlets on its circumference, and the water inlet shaft has several water outlets. The water inlets and water outlets are interconnected. The water inlet plate is fixed to the bottom of the diverter seat and is connected to the first air outlet.

[0011] According to the above technical solution, the gas supply unit acts as a gas power source to supply gas, which is then introduced into the distributor seat and then guided into the mixing unit. When the gas enters the mixing unit, it can drive the turbine fan to rotate, which in turn drives the water inlet shaft to rotate. When the water inlet shaft rotates, it drives the water stirring unit to rotate. At the same time, the water flow from the aquaculture pond enters the water inlet shaft through the water inlet on the water inlet plate, and then exits through the water outlet on the water inlet shaft, and then enters the mixing chamber. The rotation of the water stirring unit mixes the water flow and air in the mixing chamber. Through the synergistic effect of the turbine fan and the water stirring unit, the water and air are fully mixed, and the oxygen in the airflow gradually dissolves in the water to form an oxygen-rich water body, thus achieving the purpose of oxygenation.

[0012] Furthermore, the water inlet plate includes a water inlet ring and at least one water inlet column, each water inlet column is disposed inside the water inlet ring, and each water inlet column is provided with a first flow channel communicating with each water inlet;

[0013] The inlet shaft is provided with a second flow channel, the first flow channel is connected to the second flow channel, and the second flow channel is connected to the outlet.

[0014] According to the above technical solution, the inlet ring is located on the periphery, while the inlet columns are set inside the inlet ring, forming one or more independent inlet channels. Each inlet column is equipped with a first flow channel, which is connected to the inlet on the periphery of the inlet plate to guide the water in the pond. A second flow channel is set inside the inlet shaft, which is connected to the first flow channels in multiple inlet columns to form a continuous water flow channel. At the same time, the second flow channel is also connected to the outlet on the inlet shaft to guide the water in the pond into the mixing chamber for subsequent mixing and oxygenation.

[0015] Furthermore, the water-disrupting unit includes a first baffle fan and a second baffle fan, both of which are coaxially arranged on the water inlet shaft;

[0016] The first spoiler fan has a plurality of first arc-shaped blades formed thereon, and each first arc-shaped blade is twisted and fixed on the first spoiler fan along a first direction;

[0017] The second spoiler fan has a plurality of second arc-shaped blades formed thereon, and each second arc-shaped blade is twisted and fixed on the second spoiler fan along the second direction;

[0018] Wherein, the first direction is opposite to the second direction.

[0019] According to the above technical solution, when the water inlet shaft rotates, it drives the first and second baffle fans to rotate as well. The twisting direction of the first arc-shaped blade is opposite to that of the second arc-shaped blade. The design of the blades with opposite directions can produce different hydrodynamic effects. When the first baffle fan agitates the airflow and water flow, the first arc-shaped blade will agitate the fluid in one direction to dissolve oxygen. Subsequently, when the second baffle fan agitates the airflow and water flow, the second arc-shaped blade agitates the fluid in the opposite direction. This reverse agitation can further enhance the turbulence and shear force inside the fluid, thereby forming a complex flow field in the water body, which helps to fully mix the gas and liquid. This flow field helps to promote the overall circulation and flow of the water body, increase the dissolved oxygen content in the water body, and provide a sufficient oxygen environment for aquatic organisms such as Litopenaeus vannamei.

[0020] Furthermore, the water-disturbing unit also includes a stirring frame head, which is coaxially fixed on the water inlet shaft;

[0021] The stirring frame head includes an inner frame and an outer frame arranged coaxially, and both the inner frame and the outer frame are provided with a number of holes.

[0022] According to the above technical solution, the water in the pond first flows out of the guide mixing chamber through the outlet on the inlet shaft. When the water enters the mixing chamber, it first contacts the inner frame of the stirring frame head. The inner frame has several holes. During the rotation of the inner frame, these holes allow the water to pass through and perform preliminary diversion and refinement. The water forms a smaller water jet inside the inner frame and flows out through the holes into the outer frame area. The water flowing out of the inner frame then enters the outer frame, which also has several holes. These holes further disperse and mix the water. Since the water has been preliminarily refined in the inner frame, a more uniform and fine water distribution can be formed in the outer frame. The stirring frame head is coaxially fixed on the inlet shaft and rotates with the rotation of the inlet shaft. During the rotation, the mixing head drives the surrounding air and water to rotate together, generating centrifugal force. The centrifugal force generated by the rotation will cause the water and air to flow from the center of the mixing chamber to the outside of the mixing chamber. The oxygen-enriched water finally flows out through the bottom of the mixing component into the aquaculture pond. At the same time, the centrifugal force can also promote the breaking and dispersion of air bubbles in the mixing chamber, so that oxygen can be dissolved in the water more evenly.

[0023] Furthermore, the feeding mechanism includes a feeding box, a conveying pipe, a first motor, and a conveying roller. The conveying pipe is located at the bottom of the feeding box for conveying feed. The conveying roller is coaxially arranged inside the conveying pipe. The first motor is coaxially connected to the end of the conveying roller for driving the conveying roller to rotate. A feeding port is provided on the side of the conveying pipe away from the first motor.

[0024] According to the above technical solution, after the first motor starts, it drives the conveying roller to rotate inside the conveying pipe through a coaxial connection. The rotation of the conveying roller provides power for the conveying of feed. The feed is put into the feeding box. As the conveying roller rotates, the feed is gradually pushed into the conveying pipe. The conveying roller inside the conveying pipe continues to push the feed forward until the feed is discharged from the feeding port, thus achieving the purpose of feeding whiteleg shrimp.

[0025] Furthermore, it also includes an air blowing unit, which is disposed at the bottom of the feeding port and is used to blow the feed in the feeding port.

[0026] The air blowing unit includes an air distribution plate and a first air pipe. The air distribution plate has an air cavity and several air outlets, and each air outlet is connected to the air cavity. The flow divider has an air inlet and a second air outlet, and both the first air outlet and the second air outlet are connected to the air inlet.

[0027] One end of the first trachea is connected to the air cavity, and the other end of the first trachea is connected to the second air outlet.

[0028] A switch is provided on the first trachea, which can be turned on or off.

[0029] According to the above technical solution, gas enters the air chamber of the air distribution plate through the first air pipe. When the feed is discharged from the feeding port, the blowing unit at the bottom of the air distribution plate starts to work. The gas sprayed from the air outlet blows the feed, making the feed more evenly distributed in the pond under the action of the airflow. This reduces the differences in growth caused by competition for food, helps to reduce the accumulation and waste of feed in the pond, and also promotes the softening and dissolution of feed, improving the absorption rate of feed by aquatic organisms. The switch on the first air pipe is used to control the gas flow rate and the opening and closing of the switch. By adjusting the opening degree of the switch, the force and range of feed blowing can be controlled to adapt to different aquaculture needs and environmental conditions.

[0030] Furthermore, a one-way valve is provided in the first flow channel and / or the second flow channel, the one-way valve being used for one-way flow from the water inlet to the mixing chamber.

[0031] According to the above technical solution, the one-way valve can ensure that the water flow can only flow in the set direction (i.e., from the inlet to the mixing chamber), effectively preventing backflow of water during the mixing process or when the pressure changes.

[0032] Furthermore, the air supply component includes an air supply housing, a fan blade disposed within the air supply housing, and a second motor that drives the fan blade to rotate. The top of the air supply housing is provided with an air inlet, and the bottom of the air supply housing is provided with an air outlet. The fan blade can drive the airflow from the air inlet into the air outlet, and the air outlet is connected to the air inlet of the distributor seat.

[0033] According to the above technical solution, the second motor is installed outside the air supply housing to drive the fan blades to rotate. The rotation of the fan blades generates airflow. The airflow enters from the air inlet and exits from the air outlet. The air inlet of the distributor is connected to the air outlet of the air supply component. The distributor is used to receive the airflow from the air supply component and distribute it to the mixing chamber.

[0034] Furthermore, it also includes an oxygenation box fixedly installed on the diversion seat, the top of the oxygenation box is open, and a first steel frame mesh and a second steel frame mesh are arranged inside the oxygenation box. A plurality of bubble flotation elements are arranged between the first steel frame mesh and the second steel frame mesh, and the density of the bubble flotation elements is greater than the density of water.

[0035] The bubble flotation element is constructed with several membrane pores around its perimeter for adhering to bubbles; after the bubble flotation element is saturated with adsorbed bubbles, the buoyancy of the bubbles can drive the bubble flotation element to float upward.

[0036] The first steel frame mesh is positioned above the second steel frame mesh;

[0037] A transmission rod is connected to the first steel frame mesh, and the other end of the transmission rod is connected to the second motor.

[0038] According to the above technical solution, the bubble flotation element is placed between the first and second steel frame meshes. It has several membrane pores around its perimeter for adhering to air bubbles. When oxygen-enriched water carrying air bubbles enters the bottom of the oxygenation box, some bubbles adhere to the membrane pores of the bubble flotation element. As more bubbles adhere to the element, the buoyancy gradually increases. When the buoyancy exceeds the element's own weight, the element begins to rise. The vibration generated by the second motor is transmitted to the first steel frame mesh via a transmission rod, causing it to vibrate. When the rising bubble flotation element contacts the vibrating first steel frame mesh, the bubbles detach from the membrane pores. After detachment, the element loses buoyancy and begins to sink, returning to its initial position to prepare for adhering to air bubbles again. This process repeats continuously. During the processes of adhering, rising, defoaming, and sinking, oxygen in the bubbles is continuously released into the water, prolonging the immersion time of the bubbles and increasing the dissolved oxygen content of the water.

[0039] Furthermore, the bottom of the mixing component is provided with a tail column that communicates with the mixing chamber, and the cross-section of the tail column gradually decreases along the length of the mixing component; a second air tube is connected to the tail column, and the free end of the second air tube is connected to the bottom of the oxygenation box; the second air tube is filled with ceramic particles.

[0040] According to the above technical solution, the ceramic particles used have a rough surface with many tiny pores and uneven surfaces. When oxygen-enriched water and bubbles pass through the second air tube and flow through these ceramic particles, the bubbles will be dispersed into smaller particles. After these tiny bubbles enter the oxygenation box, their floating speed will also decrease, thereby increasing the contact time with water and allowing the oxygen in the bubbles to dissolve more fully into the water, thus improving the oxygenation effect.

[0041] On the other hand, the present invention also proposes a feeding and aeration method for Litopenaeus vannamei (whiteleg shrimp) farming ponds, including the use of the aforementioned Litopenaeus vannamei (whiteleg shrimp) farming pond feeding and aeration device, and the feeding and aeration method includes the following steps:

[0042] Start the air supply system: Start the air supply component to generate airflow, and the airflow enters the air intake of the distributor through the air outlet;

[0043] Diversion and Mixing: The airflow is directed to the first and second air outlets through the diversion seat. The airflow from the first air outlet enters the mixing chamber of the mixing unit, which drives the turbine fan and water turbulence unit to rotate, mixing and oxygenating the water flow entering the mixing chamber. The airflow from the second air outlet enters the air distribution plate of the blowing unit through the first air pipe, preparing for the feed blowing at the feeding port.

[0044] Feeding: Put the feed into the feeding box, start the first motor, drive the conveyor roller to rotate in the conveyor pipe, push the feed to the feeding port, and blow the feed through the air outlet of the air blowing unit.

[0045] Optimize bubble distribution: Oxygen-enriched water and bubbles enter the second air tube through the tail column at the bottom of the mixing component. The ceramic particles filled in the second air tube disperse the bubbles into smaller bubbles.

[0046] Bubble flotation and oxygenation: Oxygen-enriched water carries bubbles into the oxygenation box. The bubbles adhere to the membrane pores of the bubble flotation element. As the number of bubbles increases, the bubble flotation element floats up. At the same time, the second motor drives the first steel frame mesh to vibrate through the transmission rod, causing the bubbles on the floating bubble flotation element to fall off. After the bubble flotation element is defoamed, it sinks down and is ready to re-adhere to the bubbles. This process is repeated, continuously increasing oxygen.

[0047] Cyclic operation: The above steps are continuously run to form a continuous feeding and oxygenation cycle.

[0048] The beneficial effects of this invention are:

[0049] 1. This invention is based on the characteristic that bubbles rise to the surface. If the oxygen-enriched water flows out from the top of the mixing component, some oxygen in the airflow may not be fully dissolved in the water and will rise and escape, failing to achieve the effect of sufficient oxygenation. In this embodiment, the airflow enters from the top of the mixing component. Although bubbles generated in the mixing chamber will rise, they will not overflow from the top of the mixing component. Moreover, the bubbles will fully contact and dissolve with the water flow in the mixing chamber during their ascent. Finally, the mixed oxygen-enriched water and part of the airflow will be discharged from the bottom, effectively avoiding the problem of rapid bubble escape.

[0050] 2. The gas supply component of this invention serves as a gas power source to supply gas, which is then introduced into the distributor seat and then guided into the mixing component. When the gas enters the mixing component, it drives the turbine fan to rotate, which in turn drives the water inlet shaft to rotate. When the water inlet shaft rotates, it drives the water stirring unit to rotate. At the same time, the water flow from the aquaculture pond enters the water inlet shaft through the water inlet on the water inlet plate, and then exits through the water outlet on the water inlet shaft, and then enters the mixing chamber. The rotation of the water stirring unit mixes the water flow and air in the mixing chamber. Through the synergistic effect of the turbine fan and the water stirring unit, the water and air are fully mixed, and the oxygen in the airflow gradually dissolves in the water to form an oxygen-rich water body, thereby achieving the purpose of oxygenation.

[0051] 3. After the oxygen-enriched water and some bubbles formed by the mixture of the present invention flow out from the bottom of the tail column, the ceramic particles in the second air tube will disperse the large bubbles into smaller microbubbles. After the microbubbles enter the oxygenation box, their floating speed will also decrease, thereby increasing the contact time with water, so that the oxygen in the bubbles can be more fully dissolved into the water, thereby improving the oxygenation effect.

[0052] 4. This invention employs a method where a bubble flotation element is placed between a first steel frame mesh and a second steel frame mesh. The element has several membrane pores around its perimeter for adhering to air bubbles. When oxygen-enriched water carrying bubbles enters the bottom of the oxygenation box, some bubbles adhere to the membrane pores of the bubble flotation element. As more bubbles adhere to the element, the buoyancy gradually increases. When the buoyancy exceeds the element's own weight, the element begins to rise. The vibration generated by the second motor is transmitted to the first steel frame mesh via a transmission rod, causing it to vibrate. When the rising bubble flotation element contacts the vibrating first steel frame mesh, the bubbles detach from the membrane pores. After detachment, the element loses buoyancy and begins to sink, returning to its initial position to prepare for re-adhering to bubbles. This process is repeated continuously. During the processes of adhering, rising, defoaming, and sinking, oxygen from the bubbles is continuously released into the water, increasing the dissolved oxygen content and significantly improving the oxygenation effect.

[0053] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application may be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the overall structure of the feeding and aeration device for Litopenaeus vannamei ponds according to the present invention.

[0055] Figure 2 This is a top view schematic diagram of the feeding and aeration device for Litopenaeus vannamei ponds according to the present invention;

[0056] Figure 3 for Figure 2 AA sectional view;

[0057] Figure 4 for Figure 2 BB cross-sectional diagram;

[0058] Figure 5 This is a schematic diagram of the mixing unit in the feeding and aeration device for Litopenaeus vannamei ponds of the present invention;

[0059] Figure 6 This is a schematic diagram of the explosion structure of the mixing unit in one direction of the feeding and oxygenation device for Litopenaeus vannamei ponds of the present invention.

[0060] Figure 7 This is a schematic diagram of the explosion structure of the mixing unit in the feeding and oxygenation device for Litopenaeus vannamei ponds of the present invention from another direction;

[0061] Figure 8 for Figure 3 Schematic diagram of Part A;

[0062] Figure 9 This is a top view of the mixing unit in the feeding and aeration device for Litopenaeus vannamei ponds of the present invention.

[0063] Figure 10 for Figure 9 CC cross-sectional view;

[0064] Figure 11 for Figure 10 Partial sectional view;

[0065] Figure 12 This is a schematic diagram of the diversion seat in the feeding and aeration device for Litopenaeus vannamei ponds of the present invention;

[0066] Figure 13 This is a cross-sectional schematic diagram of the diversion seat in the feeding and aeration device for Litopenaeus vannamei ponds of the present invention.

[0067] Figure 14 for Figure 3 A schematic diagram of the structure of part B;

[0068] Figure 15 This is a schematic diagram of the planar structure of the bubble flotation component in the feeding and aeration device for Litopenaeus vannamei ponds of the present invention.

[0069] The components include: carrier 1, feeding mechanism 2, feeding box 21, conveying pipe 22, feeding port 221, first motor 23, conveying roller 24, mixing mechanism 3, air supply component 31, air supply housing 311, fan blade 312, second motor 313, air inlet 314, air outlet 315, flow divider 32, air inlet 321, first air outlet 322, second air outlet 323, mixing unit 33, water inlet tray 331, water inlet ring 3311, water inlet 3311a, water inlet column 3312, first flow channel 3312a, mixing component 332, and mixing chamber 3321. 333 turbofan, 334 water turbulence unit, 3341 first turbulence fan, 3341a first arc blade, 3342 second turbulence fan, 3342a second arc blade, 3343 stirring frame head, 335 water inlet shaft, 335a second flow channel, 3351 water outlet, 336 tail column, 4 air blowing unit, 41 air distribution plate, 411 air chamber, 412 air outlet, 42 first air pipe, 43 switch, 44 one-way valve, 5 oxygenation box, 51 first steel frame mesh, 52 second steel frame mesh, 53 bubble flotation component, 531 membrane hole, 54 transmission rod, 6 second air pipe. Detailed Implementation

[0070] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0071] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0072] This embodiment proposes a feeding and aeration device for Litopenaeus vannamei ponds, such as... Figures 1 to 15 As shown, it includes a carrier 1, a feeding mechanism 2 and a mixing mechanism 3. Both the feeding mechanism 2 and the mixing mechanism 3 are mounted on the carrier 1. In this embodiment, the carrier 1 is preferably a ship.

[0073] like Figure 3 and Figure 4 As shown, the mixing mechanism 3 includes an air supply component 31, a flow divider 32, and a mixing unit 33. The flow divider 32 is connected to the air supply component 31 and the mixing unit 33 respectively. The air supply component 31 supplies air to the mixing unit 33 through the flow divider 32. In this embodiment, there are two mixing mechanisms 3. Of course, it can be understood that the number of mixing mechanisms 3 can be increased or decreased according to the actual situation.

[0074] like Figure 12 and Figure 13As shown, the air distribution seat 32 is provided with an air inlet 321, a first air outlet 322, and a second air outlet 323. The first air outlet 322 and the second air outlet 323 are both connected to the air inlet 321. The air supply component 31 includes an air supply housing 311, a fan blade 312 disposed in the air supply housing 311, and a second motor 313 that drives the fan blade 312 to rotate. The top of the air supply housing 311 is provided with an air inlet 314, and the bottom of the air supply housing 311 is provided with an air outlet 315. When the fan blade 312 rotates, it can drive the airflow from the air inlet 314 into the air outlet 315. The air outlet 315 is connected to the air inlet 321 of the air distribution seat 32. The second motor 313 is installed outside the air supply housing 311 to drive the fan blades 312 to rotate. The rotation of the fan blades 312 generates airflow. The airflow enters from the air inlet 314 and exits from the air outlet 315. The air inlet 321 of the diverter 32 is connected to the air outlet 315 of the air supply component 31. The diverter 32 is used to receive the airflow from the air supply component 31 and distribute it to the mixing chamber 3321.

[0075] In one possible implementation, the air supply component 31 can be an air pump, the air outlet of which is connected to the distributor 32. The gas enters the air inlet 321 and drives the mixing component 332 to mix the airflow and water flow to dissolve oxygen.

[0076] like Figure 5 , Figure 6 and Figure 7 As shown, the mixing unit 33 includes an inlet plate 331, a mixing component 332, a turbine fan 333, a water-dispersing unit 334, and an inlet shaft 335. The inlet plate 331 is fixed to the top of the mixing component 332. A mixing chamber 3321 is opened in the mixing component 332. The inlet shaft 335 is located in the mixing chamber 3321 and is coaxially rotatably connected to the inlet plate 331. The turbine fan 333 and the water-dispersing unit 334 are coaxially fixedly installed on the inlet shaft 335. The water inlet shaft 335, driven by the air supply component 31, can rotate the turbine fan 333 and the water-dispersing unit 334 around the axis of the water inlet shaft 335. The circumferential surface of the water inlet plate 331 is provided with several water inlets 3311a, and the water inlet shaft 335 is provided with several water outlets 3351. The water inlets 3311a and water outlets 3351 are interconnected. The water inlet plate 331 is fixed to the bottom of the diverter seat 32 and communicates with the first air outlet 322. In this embodiment, the air supply component 31 acts as a gas power source to supply gas into the diverter seat 32, which then guides the gas into the mixing component 332. When the gas enters the mixing component 332, the airflow causes the turbine fan 333 to rotate, which in turn drives the water inlet shaft 335 to rotate. The rotation of the water inlet shaft 335 then drives the water-dispersing unit 334 to rotate.

[0077] The water inlet plate 331 includes a water inlet ring 3311 and at least one water inlet column 3312. Each water inlet column 3312 is disposed inside the water inlet ring 3311, and each water inlet column 3312 is provided with a first flow channel 3312a that communicates with each water inlet 3311a. As an exemplary embodiment, the number of water inlet columns 3312 is three.

[0078] like Figure 10 and Figure 11 As shown, a second flow channel 335a is provided inside the water inlet shaft 335. The first flow channel 3312a is connected to the second flow channel 335a, and the second flow channel 335a is connected to the water outlet 3351 on the water inlet shaft 335. In this embodiment, the inlet ring 3311 is located on the periphery, while the inlet columns 3312 are located inside the inlet ring 3311, forming three independent inlet channels. Each inlet column 3312 is provided with a first flow channel 3312a, which is connected to the inlet 3311a on the circumference of the inlet plate 331 to guide water from the pond. A second flow channel 335a is provided in the inlet shaft 335, which is connected to the first flow channel 3312a in the three inlet columns 3312 to form a continuous water flow channel. At the same time, the second flow channel 335a is also connected to the outlet 3351 on the inlet shaft 335 to guide the water from the pond into the mixing chamber 3321 for subsequent mixing and oxygenation.

[0079] like Figure 6 and Figure 7As shown, the water-disrupting unit 334 includes a first baffle fan 3341 and a second baffle fan 3342, both of which are coaxially mounted on the water inlet shaft 335. The first baffle fan 3341 has a plurality of first arc-shaped blades 3341a, each of which is twisted and fixed to the first baffle fan 3341 along a first direction. The second baffle fan 3342 has a plurality of second arc-shaped blades 3342a, each of which is twisted and fixed to the second baffle fan 3342 along a second direction. The first direction is opposite to the second direction. In this embodiment, the first direction is preferably clockwise and the second direction is counterclockwise. According to the above technical solution, when the water inlet shaft 335 rotates, it drives the first baffle fan 3341 and the second baffle fan 3342 to rotate as well. The twisting direction of the first arc-shaped blade 3341a is opposite to that of the second arc-shaped blade 3342a. The design of the blades with opposite directions can produce different hydrodynamic effects. When the first baffle fan 3341 agitates the airflow and water flow, the first arc-shaped blade 3341a will agitate the fluid in one direction to dissolve oxygen. Subsequently, when the second baffle fan 3342 agitates the airflow and water flow, the second arc-shaped blade 3342a agitates the fluid in the opposite direction. This reverse agitation can further enhance the turbulence and shear force inside the fluid, thereby forming a complex flow field in the water body. This helps to fully mix the gas and liquid, promotes the overall circulation and flow of the water body, increases the dissolved oxygen content in the water body, and provides a sufficient oxygen environment for aquatic organisms such as Litopenaeus vannamei.

[0080] like Figure 6 , Figure 7 and Figure 11As shown, the water disturbance unit 334 also includes a stirring frame head 3343, which is coaxially fixed on the water inlet shaft 335. The stirring frame head 3343 includes an inner frame and an outer frame arranged coaxially, and both the inner frame and the outer frame are provided with several holes. According to the above technical solution, the water in the pond first flows out of the guide mixing chamber 3321 through the outlet 3351 on the inlet shaft 335. When the water enters the mixing chamber 3321, it first contacts the inner frame of the stirring frame head 3343. The inner frame is provided with several holes. During the rotation of the inner frame, these holes allow the water to pass through and perform preliminary diversion and refinement. The water forms a small water jet inside the inner frame and flows out through the holes into the outer frame area. The water flowing out of the inner frame then enters the outer frame, which is also provided with several holes. These holes further disperse and mix the water. Since the water has been preliminarily refined in the inner frame, a more uniform and fine water distribution can be formed in the outer frame. The stirring frame head 3343 is coaxially fixed on the inlet shaft 335 and rotates with the rotation of the inlet shaft 335. During the rotation, the stirring frame head 3343 will drive the surrounding airflow and water flow to rotate together, generating centrifugal force. The centrifugal force generated by the rotation will cause the water flow and airflow to flow from the center of the mixing chamber 3321 to the periphery of the mixing chamber 3321. The centrifugal force has the effect of promoting the breaking and dispersion of air bubbles in the mixing chamber 3321, so that oxygen can dissolve in the water more quickly for mixing and oxygenation. Finally, the oxygenated water (oxygenated water) flows out through the bottom of the mixing component 332 into the aquaculture pond.

[0081] In this embodiment, water from the aquaculture pond enters the inlet shaft 335 through the inlet 3311a on the inlet plate 331, and then exits through the outlet 3351 on the inlet shaft 335, subsequently entering the mixing chamber 3321. The water-stirring unit 334 rotates to mix the water and air in the mixing chamber 3321. The airflow drives the turbine fan 333 to rotate, which in turn drives the water-stirring unit 334 and the stirring frame head 3343 on the inlet shaft 335 to work together, ensuring thorough mixing of water and air. The oxygen in the airflow gradually dissolves in the water, forming oxygen-rich water and achieving the purpose of oxygenation. Moreover, based on the characteristic that air bubbles will rise, if the oxygen-rich water flows out from the top of the mixing component 332, some oxygen in the airflow may not be fully dissolved in the water and may rise and escape, failing to achieve the effect of sufficient oxygenation. In this embodiment, airflow enters from the top of the mixing component 332. Although bubbles generated in the mixing chamber 3321 rise to the surface, they do not overflow from the top of the mixing component 332. Moreover, during their ascent, the bubbles come into full contact with and dissolve the water flow in the mixing chamber 3321. Finally, the mixed oxygen-enriched water and some bubbles are discharged from the bottom, effectively preventing the problem of rapid bubble escape.

[0082] like Figure 3 and Figure 4As shown, the feeding mechanism 2 includes a feeding box 21, a conveying pipe 22, a first motor 23, and a conveying roller 24. The conveying pipe 22 is located at the bottom of the feeding box 21 for conveying feed. The conveying roller 24 is coaxially arranged inside the conveying pipe 22. The first motor 23 is coaxially connected to the end of the conveying roller 24 to drive the conveying roller 24 to rotate. A feeding port 221 is provided on the side of the conveying pipe 22 away from the first motor 23. According to the above technical solution, after the first motor 23 starts, it drives the conveying roller 24 to rotate inside the conveying pipe 22 through a coaxial connection. The rotation of the conveying roller 24 provides power for the conveying of feed. The feed is put into the feeding box 21. As the conveying roller 24 rotates, the feed is gradually pushed into the conveying pipe 22. The conveying roller 24 inside the conveying pipe 22 continues to push the feed forward until the feed is discharged from the feeding port 221, thus achieving the purpose of feeding Litopenaeus vannamei.

[0083] Combination such as Figure 3 , Figure 4 and Figure 8 As shown, this embodiment also includes an air blowing unit 4, which is located at the bottom of the feeding port 221 and is used to blow the feed in the feeding port 221. The air blowing unit 4 includes an air distribution plate 41 and a first air pipe 42. The air distribution plate 41 has an air chamber 411 and several air outlets 412, and each air outlet 412 is connected to the air chamber 411. One end of the first air pipe 42 is connected to the air chamber 411, and the other end of the first air pipe 42 is connected to the second air outlet 323. Gas enters the air chamber 411 of the air distribution plate 41 through the first air pipe 42. When the feed is discharged from the feeding port 221, the air blowing unit 4 at the bottom of the air distribution plate 41 starts to work. The gas sprayed from the air outlets 412 blows the feed, so that the feed is more evenly distributed in the pond under the action of the airflow. This reduces the growth differences caused by competition for food and helps to reduce the accumulation and waste of feed in the pond.

[0084] A switch 43 is provided on the first air pipe 42, which can be turned on or off. The switch 43 on the first air pipe 42 is used to control the flow rate of gas and the switch 43. By adjusting the degree of opening of the switch 43, the force and range of feed blowing can be controlled to adapt to different breeding needs and environmental conditions.

[0085] Furthermore, a one-way valve 44 is provided in the first flow channel 3312a and / or the second flow channel 335a. The one-way valve 44 is used for one-way flow from the inlet 3311a to the mixing chamber 3321. Preferably, the one-way valve 44 is located in the second flow channel 335a to ensure that the water flow can only flow in the set direction (i.e., from the inlet 3311a to the mixing chamber 3321), effectively preventing backflow of water during the mixing process or when the pressure changes.

[0086] As a preferred embodiment, such as Figure 2, Figure 3 and Figure 14 As shown, it also includes an aeration box 5 fixedly mounted on the diversion seat 32. The top of the aeration box 5 is open, and a first steel frame mesh 51 and a second steel frame mesh 52 that are parallel to each other are arranged inside the aeration box 5. A plurality of bubble flotation elements 53 are arranged between the first steel frame mesh 51 and the second steel frame mesh 52. A plurality of membrane pores 531 are constructed around the bubble flotation elements 53 for adsorbing bubbles. After the bubble flotation elements 53 are saturated with bubbles, the buoyancy of the bubbles can drive the bubble flotation elements 53 to float. The average density of the bubble flotation elements 53 is greater than the density of water. Preferably, the surface of the bubble flotation element 53 is hydrophobic. In this embodiment, the bubble flotation element 53 is made of a cubic structure using a honeycomb aluminum plate. The surface of the cubic structure has inwardly recessed membrane pores 531. The honeycomb aluminum plate itself has a dense oxide film on its surface. The honeycomb structure is relatively lightweight, and the adjacent membrane pores 531 are isolated from each other, so the bubbles are not easy to merge after adsorption. In combination with the actual manufacturing process, the thickness of the honeycomb aluminum interlayer wall can be processed to a minimum of 0.04 mm, and the thickness of the honeycomb aluminum plate can be processed to a minimum of 1.0 mm.

[0087] The first steel frame mesh 51 is positioned above the second steel frame mesh 52; a transmission rod 54 is connected to the first steel frame mesh 51, and the other end of the transmission rod 54 is connected to the second motor 313. The bubble flotation element 53 is placed between the first steel frame mesh 51 and the second steel frame mesh 52. It has several membrane holes 531 around its perimeter for adhering to bubbles. When oxygen-enriched water carries bubbles into the bottom of the oxygenation box 5, some bubbles will adhere to the membrane holes 531 of the bubble flotation element 53. As more bubbles adhere to the bubble flotation element 53, the buoyancy of the bubbles gradually increases. When the buoyancy exceeds the weight of the bubble flotation element 53 itself, the bubble flotation element 53 begins to float. The vibration generated by the second motor 313 when it is working is transmitted to the first steel frame mesh 51 through the transmission rod 54, causing it to vibrate. When the floating bubble flotation element 53 comes into contact with the vibrating first steel frame mesh 51, the bubbles fall off from the membrane holes 531 of the bubble flotation element 53. After the bubbles fall off, the bubble flotation element 53 begins to sink due to loss of buoyancy and falls back to the second steel frame mesh 52, ready to adher to bubbles again. The above process repeats itself, and the oxygen in the bubbles is continuously released into the water as they adhere, float, defoam, and sink, thus increasing the dissolved oxygen content of the water.

[0088] Furthermore, such as Figure 5 , Figure 6 and Figure 7 As shown, the bottom of the mixing component 332 is provided with a tail post 336 that communicates with the mixing chamber 3321, along the length direction of the mixing component 332 (that is, along the length direction of the mixing component 332). Figure 5The cross-section of the tail column 336 gradually decreases from top to bottom (vertical direction); a second air tube 6 is connected to the tail column 336, and the free end of the second air tube 6 is connected to the bottom of the oxygenation box 5; the second air tube 6 is filled with ceramic particles. Preferably, ceramic beads are used as the ceramic particles. According to the above technical solution, the ceramic beads have a rough surface with many tiny pores and uneven surfaces. When oxygen-enriched water and bubbles pass through the second air tube 6 and flow through these ceramic particles, the bubbles are dispersed into even smaller particles. These tiny bubbles, after entering the oxygenation box 5, have a correspondingly lower rising speed compared to larger bubbles, thereby increasing the contact time between the bubbles and the water, allowing the oxygen in the bubbles to dissolve more fully into the water, thus improving the oxygenation effect.

[0089] On the other hand, the present invention also proposes a feeding and aeration method for Litopenaeus vannamei (whiteleg shrimp) farming ponds, including the use of the aforementioned Litopenaeus vannamei (whiteleg shrimp) farming pond feeding and aeration device, and the feeding and aeration method includes the following steps:

[0090] Start the air supply system: Start the air supply component 31 to generate airflow, and the airflow enters the air intake 321 of the distributor 32 through the air outlet 315;

[0091] Diversion and Mixing: The airflow is directed to the first air outlet 322 and the second air outlet 323 through the diversion seat 32. The airflow from the first air outlet 322 enters the mixing chamber 3321 of the mixing unit 33, which drives the turbine fan 333 and the water disturbance unit 334 to rotate, mixing and oxygenating the water flow entering the mixing chamber 3321. The airflow from the second air outlet 323 enters the air distribution plate 41 of the blowing unit 4 through the first air pipe 42, preparing for the feed blowing at the feeding port 221.

[0092] Feeding: Put the feed into the feeding box 21, start the first motor 23, drive the conveying roller 24 to rotate in the conveying pipe 22, push the feed to the feeding port 221, and blow the feed through the air outlet 412 of the blowing unit 4.

[0093] Optimize bubble distribution: Oxygen-enriched water and bubbles enter the second air tube 6 through the tail column 336 at the bottom of the mixing component 332. The ceramic particles filled in the second air tube 6 disperse the bubbles into smaller bubbles.

[0094] Bubble flotation and oxygenation: Oxygen-enriched water carries bubbles into the oxygenation box 5. The bubbles adhere to the membrane pores 531 of the bubble flotation element 53. As the number of bubbles increases, the bubble flotation element 53 floats up. At the same time, the second motor 313 drives the first steel frame mesh 51 to vibrate through the transmission rod 54, causing the bubbles on the floating bubble flotation element 53 to fall off. After the bubble flotation element 53 is defoamed, it sinks down and is ready to re-adhere to the bubbles. This process is repeated, continuously increasing oxygen.

[0095] Cyclic Operation: The above steps are continuously run to form a continuous feeding and oxygenation cycle. Through precise air supply control, reasonable diversion and mixing design, accurate feed delivery, and optimized bubble distribution and flotation mechanism, this system can provide sufficient oxygen and a suitable growth environment for aquatic organisms such as Litopenaeus vannamei, promoting their healthy growth and reproduction.

[0096] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A feeding and aeration device for a pond used for raising Litopenaeus vannamei shrimp, characterized in that, include: The carrier (1), the feeding mechanism (2) and the mixing mechanism (3) are both disposed on the carrier (1); The mixing mechanism (3) includes an air supply component (31), a flow divider (32), and a mixing unit (33). The flow divider (32) is connected to the air supply component (31) and the mixing unit (33) respectively. The air supply component (31) supplies air to the mixing unit (33) through the flow divider (32). The flow divider (32) is provided with a first air outlet (322); The mixing unit (33) includes an inlet plate (331), a mixing component (332), a turbofan (333), a water-dispersing unit (334), and an inlet shaft (335). The inlet plate (331) is fixed to the top of the mixing component (332). A mixing chamber (3321) is provided inside the mixing component (332). The inlet shaft (335) is located inside the mixing chamber (3321) and is coaxially rotatably connected to the inlet plate (331). The turbofan (333) and the water-dispersing unit (334) are coaxially mounted on the inlet shaft (335). The inlet shaft (335) can drive the turbofan (333) and the water-dispersing unit (334) to rotate around the axis of the inlet shaft (335) under the drive of the air supply component (31). The water inlet plate (331) has a plurality of water inlets (3311a) on its circumference, and the water inlet shaft (335) has a plurality of water outlets (3351). The water inlets (3311a) and the water outlets (3351) are interconnected. The water inlet plate (331) is fixed to the bottom of the flow divider (32) and is connected to the first air outlet (322). The water inlet plate (331) includes a water inlet ring (3311) and at least one water inlet column (3312). Each water inlet column (3312) is disposed inside the water inlet ring (3311), and each water inlet column (3312) is provided with a first flow channel (3312a) that communicates with each water inlet (3311a). The inlet shaft (335) is provided with a second flow channel (335a), the first flow channel (3312a) is connected to the second flow channel (335a), and the second flow channel (335a) is connected to the outlet (3351). The water-disrupting unit (334) includes a first turbulence fan (3341) and a second turbulence fan (3342), both of which are coaxially mounted on the water inlet shaft (335). A plurality of first arc-shaped blades (3341a) are formed on the first spoiler fan (3341), and each first arc-shaped blade (3341a) is twisted and fixed on the first spoiler fan (3341) along a first direction; A plurality of second arc-shaped blades (3342a) are formed on the second spoiler fan (3342), and each second arc-shaped blade (3342a) is twisted and fixed on the second spoiler fan (3342) along the second direction; Wherein, the first direction is opposite to the second direction.

2. The feeding and aeration device for Litopenaeus vannamei ponds according to claim 1, characterized in that: The water disturbance unit (334) also includes a stirring frame head (3343), which is coaxially fixed on the water inlet shaft (335); The stirring frame head (3343) includes an inner frame and an outer frame arranged coaxially, and both the inner frame and the outer frame are provided with a number of holes.

3. The feeding and aeration device for Litopenaeus vannamei ponds according to claim 1, characterized in that: The feeding mechanism (2) includes a feeding box (21), a conveying pipe (22), a first motor (23), and a conveying roller (24). The conveying pipe (22) is located at the bottom of the feeding box (21) for conveying feed. The conveying roller (24) is coaxially located inside the conveying pipe (22). The first motor (23) is coaxially connected to the end of the conveying roller (24) for driving the conveying roller (24) to rotate. A feeding port (221) is provided on the side of the conveying pipe (22) away from the first motor (23).

4. The feeding and aeration device for Litopenaeus vannamei ponds according to claim 3, characterized in that: It also includes an air blowing unit (4), which is located at the bottom of the feeding port (221) and is used to blow the feed in the feeding port (221); The air blowing unit (4) includes an air distribution plate (41) and a first air pipe (42). The air distribution plate (41) has an air chamber (411) and a plurality of air outlets (412), and each air outlet (412) is connected to the air chamber (411). The flow divider (32) has an air inlet (321) and a second air outlet (323), and both the first air outlet (322) and the second air outlet (323) are connected to the air inlet (321). One end of the first trachea (42) is connected to the air chamber (411), and the other end of the first trachea (42) is connected to the second air outlet (323); A switch (43) is provided on the first trachea (42), and the switch (43) can be turned on or off.

5. The feeding and aeration device for Litopenaeus vannamei ponds according to claim 4, characterized in that: The air supply component (31) includes an air supply housing (311), a fan blade (312) disposed in the air supply housing (311), and a second motor (313) that drives the fan blade (312) to rotate. An air inlet (314) is provided at the top of the air supply housing (311), and an air outlet (315) is provided at the bottom of the air supply housing (311). The fan blade (312) can drive the airflow from the air inlet (314) into the air outlet (315). The air outlet (315) is connected to the air inlet (321) of the diverter seat (32).

6. The feeding and aeration device for Litopenaeus vannamei ponds according to claim 5, characterized in that: It also includes an oxygenation box (5) fixedly installed on the diversion seat (32), the top of the oxygenation box (5) is open, and a first steel frame mesh (51) and a second steel frame mesh (52) that are parallel to each other are provided inside the oxygenation box (5). A plurality of bubble flotation elements (53) are provided between the first steel frame mesh (51) and the second steel frame mesh (52), and the density of the bubble flotation elements (53) is greater than the density of water. The bubble flotation element (53) is constructed with a number of membrane pores (531) around its periphery for adhering to bubbles; after the bubble flotation element (53) is saturated with adsorbed bubbles, the buoyancy of the bubbles can drive the bubble flotation element (53) to float. The first steel frame mesh (51) is positioned above the second steel frame mesh (52); A transmission rod (54) is connected to the first steel frame mesh (51), and the other end of the transmission rod (54) is connected to the second motor (313).

7. The feeding and aeration device for Litopenaeus vannamei ponds according to claim 6, characterized in that: The bottom of the mixing component (332) is provided with a tail column (336) that communicates with the mixing chamber (3321). Along the length of the mixing component (332), the cross-section of the tail column (336) gradually decreases. A second air tube (6) is connected to the tail column (336), and the free end of the second air tube (6) is connected to the bottom of the oxygenation box (5). The second trachea (6) is filled with ceramic particles.

8. A method for feeding and aerating a pond for Litopenaeus vannamei, comprising using the feeding and aerating device for Litopenaeus vannamei as described in any one of claims 1-7, the method comprising the following steps: Start the air supply system: Start the air supply component (31) to generate airflow, and the airflow enters the air intake (321) of the splitter seat (32) through the air outlet (315). Diversion and mixing: The airflow is directed to the first air outlet (322) and the second air outlet (323) respectively through the diversion seat (32). The airflow in the first air outlet (322) enters the mixing chamber (3321) of the mixing unit (33), and at the same time drives the turbine fan (333) and the water disturbance unit (334) to rotate, mixing and oxygenating the water flow entering the mixing chamber (3321); the airflow in the second air outlet (323) enters the air distribution plate (41) of the blowing unit (4) through the first air pipe (42) to prepare for the feed blowing at the feeding port (221); Feeding: Put the feed into the feeding box (21), start the first motor (23), drive the conveying roller (24) to rotate in the conveying pipe (22), push the feed to the feeding port (221), and blow the feed through the air outlet (412) of the blowing unit (4); Optimize bubble distribution: Oxygen-enriched water and bubbles enter the second air tube (6) through the tail column (336) at the bottom of the mixing component (332). The ceramic particles filled in the second air tube (6) disperse the bubbles into smaller bubbles. Bubble flotation and oxygenation: Oxygen-enriched water carries bubbles into the oxygenation box (5). The bubbles adhere to the membrane pores (531) of the bubble flotation element (53). As the number of bubbles increases, the bubble flotation element (53) floats up. At the same time, the second motor (313) drives the first steel frame mesh (51) to vibrate through the transmission rod (54), causing the bubbles on the floating bubble flotation element (53) to fall off. After the bubble flotation element (53) is defoamed, it sinks down and is ready to re-adhere to the bubbles. This process is repeated to continuously oxygenate. Cyclic operation: The above steps are continuously run to form a continuous feeding and oxygenation cycle.

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