A shrimp larvae domestication system for saline-alkali ponds

Abstract

This invention belongs to the field of aquaculture equipment technology, and particularly relates to a shrimp larvae acclimatization system for saline-alkali ponds. Addressing the problems of inaccurate water quality control and high stress during the multi-stage acclimatization process of shrimp larvae, the following solution is proposed: a salinity acclimatization tank, an ion acclimatization tank, and a water quality acclimatization tank are arranged sequentially along the acclimatization process, with transfer tanks between adjacent tanks. Each acclimatization tank is equipped with an independent water purification and conditioning component, capable of purifying the water in real time and precisely adding the required liquids, achieving closed-loop control through an integrated online water quality monitoring system. The salinity and ion acclimatization tanks have inflatable air bladders at the bottom; when inflated, these bladders raise the water level, allowing water to flow through the transfer tanks and form a waterway to induce shrimp larvae transfer. The transfer tanks are equipped with a water flow induction component that can switch flow directions to further assist the transfer. This invention achieves independent water quality control at multiple stages and enables low-stress, automated transfer of shrimp larvae.

Description

Technical Field

[0001] This invention relates to a shrimp larvae domestication system, specifically a shrimp larvae domestication system for saline-alkali ponds, belonging to the technical field of aquaculture equipment. Background Technology

[0002] In the inland saline-alkali regions of Northwest and North my country, utilizing saline-alkali waters for the aquaculture of economically important shrimp species such as Litopenaeus vannamei is an important way to turn "waste" into treasure and expand aquaculture space. However, saline-alkali water is characterized by high pH, ​​high salinity, and an imbalance in the proportion of key ions (such as potassium and magnesium), which differs greatly from the environment of standardized shrimp larvae breeding farms. This results in shrimp larvae suffering severe osmotic pressure and ion stress when directly introduced into ponds, leading to a violent stress response and a survival rate that has long hovered below 50%, severely restricting the large-scale development of this industry.

[0003] To address this bottleneck, the industry has proposed various technical solutions. Among existing technologies, such as the salinity and alkaline water acclimatization method for Litopenaeus vannamei larvae disclosed in CN108834970A, the core technical idea is to sequentially acclimatize salinity, ion, and water quality as needed, reducing stress responses in larvae by adjusting water quality parameters in stages. While this method points the way at the process level, it is essentially a method invention. Its implementation heavily relies on manual experience in traditional ponds or simple temporary holding tanks for water quality adjustment and larvae transfer, resulting in cumbersome operations, poor water quality control precision, and secondary stress caused by disturbance during larvae transfer, making standardized and large-scale application difficult. On the other hand, existing technologies also provide some specialized devices to improve the larvae rearing environment. For example, a larvae rearing device disclosed in CN114403077A uses a rearing tank with brush baffles to flush out excrement while preventing larvae loss, aiming to maintain clean water in the rearing tank. While these devices focus on water purification and escape prevention, their design goal is conventional seedling cultivation rather than adaptive domestication for saline-alkali water. Their structure is a static, closed cultivation unit, which cannot achieve automated, low-stress transfer of shrimp larvae between different water environments, nor does it have the dedicated functional integration capability for multi-stage domestication processes (salinity, ions, water quality) in saline-alkali water. Summary of the Invention

[0004] This invention provides a saline-alkali pond shrimp larvae domestication system to solve the problems of inaccurate water quality control and high stress during the multi-stage domestication process of shrimp larvae.

[0005] The present invention achieves the above objectives through the following technical solution: a saline-alkali pond shrimp larvae acclimatization system, comprising an acclimatization tank assembly, the acclimatization tank assembly comprising a salinity acclimatization tank, an ion acclimatization tank and a water quality acclimatization tank arranged sequentially along the acclimatization process, a transfer tank being provided between adjacent acclimatization tanks of the acclimatization tank assembly, each acclimatization tank of the acclimatization tank assembly being equipped with a water source purification and conditioning component, each transfer tank being equipped with a water flow induction component, each acclimatization tank of the acclimatization tank assembly having a bottom net at the bottom, the bottom of the salinity acclimatization tank and the ion acclimatization tank being provided with an inflatable airbag located below the bottom net, the upper end of the side wall of the transfer tank being connected to the acclimatization tank at its front end, and the lower end of the side wall of the transfer tank being connected to the acclimatization tank at its rear end;

[0006] The water purification and conditioning component includes a purification box, which is connected to a matching acclimatization tank by an inlet pipe and an outlet pipe. The outlet pipe is connected to an electric heating element, an integrated online water quality detection pipe, and multiple filling pipes.

[0007] The water flow induction component includes a circulation pump, which has two water flow circulation paths, A and B. Water flow circulation path A is used to transport water in the transfer tank to the acclimatization tank at its front end via the circulation pump, and water flow circulation path B is used to transport water in the acclimatization tank at the rear end of the transfer tank to the transfer tank via the circulation pump.

[0008] As a further embodiment of the present invention: a seedling outlet pipe is connected to the side wall of the water quality acclimatization tank away from the ion acclimatization tank, and the connection position of the seedling outlet pipe is located at the lower end of the tank wall of the water quality acclimatization tank, and a seedling outlet gate valve is installed on the seedling outlet pipe.

[0009] As a further embodiment of the present invention: a water inlet channel is connected between the transfer tank and the acclimatization tank at its front end, and a drainage channel is connected between the transfer tank and the acclimatization tank at its rear end, and a transfer gate valve is installed on both the water inlet channel and the drainage channel.

[0010] As a further embodiment of the present invention: a frame assembly is provided below the acclimatization tank assembly. The frame assembly includes an upper support plate and a lower support plate that are arranged in parallel vertically. Vertical support feet are fixedly connected to the four corners of the upper support plate and the lower support plate. Each acclimatization tank of the acclimatization tank assembly and the pump body of the circulation pump are fixedly connected to the upper support plate. The circulation pump is located directly below the matching transfer tank. The purification box is fixedly connected to the lower support plate.

[0011] As a further embodiment of the present invention: the purification box is provided with two layers of baffles, and gaps are left between the two layers of baffles and the upper and lower inner walls of the purification box. Filter cotton and biological filter balls are sandwiched between the two layers of baffles, and the filter cotton is located on the upper and lower sides of the biological filter balls.

[0012] As a further embodiment of the present invention: the inlet pipe is connected between the bottom of the purification tank and the bottom of the matching acclimatization tank, and the body of the inlet pipe is connected to the drain pipe. The drain pipe and the inlet pipe are connected to the drain solenoid three-way valve. The outlet pipe is connected between the top of the purification tank and the top of the matching acclimatization tank, and the outlet pipe is connected to the suction pump. The pump body of the suction pump is fixedly connected to the purification tank. The drain solenoid three-way valve is connected to the external terminal signal, and the suction pump is connected to the external power supply.

[0013] As a further embodiment of the present invention: one end of the filling pipe is connected to the connection point of the outlet pipe with a filling solenoid three-way valve, and the other end of the filling pipe is connected to an external filling liquid storage tank. A filling pump is installed on the filling pipe. The filling liquid storage tanks connected to the salinity acclimatization tank through the filling pipe include, but are not limited to, fresh water tanks and concentrated saline-alkali water tanks. The integrated online water quality monitoring tube matched with the salinity acclimatization tank integrates sensors including, but not limited to, salinity sensors and temperature sensors. The filling liquid storage tanks connected to the ion acclimatization tank through the filling pipe include, but are not limited to, basic water storage tanks and composite mineralizing agent solution tanks. The integrated online water quality monitoring tube matched with the ion acclimatization tank integrates sensors including, but not limited to, salinity sensors, temperature sensors, potassium ion selective electrodes, and pH composite electrodes. The filling liquid storage tanks connected to the water quality acclimatization tank through the filling pipe include, but are not limited to, main water storage tanks and buffer water storage tanks. The integrated online water quality monitoring tube matched with the water quality acclimatization tank integrates sensors including, but not limited to, salinity sensors, temperature sensors, potassium ion sensors, pH and ammonia nitrogen sensors.

[0014] As a further embodiment of the present invention: a first suction pipe is connected between the inlet end of the circulating pump and the bottom of the transfer tank; a second suction pipe is connected between the inlet end of the circulating pump and the bottom of the rear acclimatization tank; and an inlet solenoid three-way valve is installed between the first suction pipe, the second suction pipe, and the inlet end of the circulating pump; a first return pipe is connected between the outlet end of the circulating pump and the upper end of the transfer tank; a second return pipe is connected between the outlet end of the circulating pump and the bottom of the front acclimatization tank; and an outlet solenoid three-way valve is installed between the first return pipe, the second return pipe, and the outlet end of the circulating pump; the circulating pump, the first suction pipe, and the first return pipe form a water flow circulation path A; the circulating pump, the second suction pipe, and the second return pipe form a water flow circulation path B; and the circulating pump, the inlet solenoid three-way valve, and the outlet solenoid three-way valve are all electrically connected to an external power supply.

[0015] As a further embodiment of the present invention: C-shaped guide pipes are fixedly connected to the upper inner walls of the salinity acclimatization tank, ion acclimatization tank, water quality acclimatization tank and transfer tank. The C-shaped guide pipes connected to the salinity acclimatization tank, ion acclimatization tank and water quality acclimatization tank are connected to the outlet pipe. The C-shaped guide pipe connected to the transfer tank is connected to the first return pipe. Several guide holes are opened at the bottom of the C-shaped guide pipe.

[0016] As a further embodiment of the present invention: a mesh frame is fixedly connected to the outer periphery of the bottom mesh, and the mesh frame is in contact with the inner wall of each acclimatization tank. An aeration disc is fixedly connected to the body of the bottom mesh. The aeration disc in the water quality acclimatization tank is connected to an external air supply pipeline. A telescopic pipe installed in the tank is connected between the aeration disc in the salinity acclimatization tank and the external air supply pipeline. The expansion airbag in the salinity acclimatization tank and the ion acclimatization tank is connected to an external inflation pipeline.

[0017] The beneficial effects of this invention are:

[0018] 1. This invention comprises a salinity acclimatization tank, an ion acclimatization tank, and a water quality acclimatization tank arranged sequentially along the acclimatization process. A transfer tank is provided between adjacent acclimatization tanks in the acclimatization tank assembly. Each acclimatization tank in the acclimatization tank assembly is equipped with a water source purification and conditioning component, and each transfer tank is equipped with a water flow induction component. A bottom net is provided at the bottom of each acclimatization tank in the acclimatization tank assembly. Inflatable airbags are located below the bottom net at the bottom of the salinity acclimatization tank and the ion acclimatization tank. The upper end of the sidewall of the transfer tank is connected to the acclimatization tank in front of it, and the lower end of the sidewall of the transfer tank is connected to the acclimatization tank in rear of it. The three sequentially arranged salinity acclimatization tanks, ion acclimatization tanks, and water quality acclimatization tanks achieve isolation and independent control of environmental parameters, ensuring that shrimp larvae are under optimal and stable water quality conditions at each acclimatization stage. This overcomes the problems of continuous stress and parameter interference in shrimp larvae caused by continuous water quality adjustments in a single water body. The transfer tanks set up between the acclimatization tanks provide a dedicated channel for the low-stress transfer of shrimp larvae. Each acclimatization tank is equipped with a water purification and conditioning component that can purify the water in real time and precisely add the required liquid according to the goals of each stage, ensuring the long-term stability and controllability of the water quality in each tank. Each transfer tank is equipped with a water flow induction component that can simulate natural water flow and use the shrimp larvae's tendency to follow the flow to drive and transfer them. The bottom net can separate the shrimp larvae from the uneaten feed, feces and other dirt that may accumulate at the bottom of the tank, reducing the risk of shrimp larvae coming into contact with pathogens and harmful substances, while also facilitating bottom cleaning operations. The inflatable airbags increase in volume by inflating, thereby directly raising the bottom net above and the water level of the entire water body, ensuring that the water level in the tank can reach and exceed the inlet height of the water inlet channel connected to the transfer tank when shrimp larvae need to be transferred, thus establishing a water flow path based on the water level difference between the front and rear acclimatization tanks and the transfer tank, so as to facilitate the transfer of shrimp larvae.

[0019] 2. The water purification and conditioning component of this invention includes a purification tank. The purification tank and its matching acclimatization tank are connected by an inlet pipe and an outlet pipe. The outlet pipe is connected to an electric heating tube, an integrated online water quality monitoring tube, and multiple injection pipes. The electric heating tube connected to the outlet pipe controls the temperature of the circulating return water, ensuring that the water temperature in the tank can be maintained within the optimal physiological range for shrimp larvae under different acclimatization stages and external climatic conditions. The integrated online water quality monitoring tube can monitor the flowing water in real time and obtain data such as salinity, ion concentration, and pH. Each injection pipe can be connected to different external liquid storage tanks through an injection pump to quantitatively inject fresh water, concentrated saline water, mineralizing agents, or pond raw water into the circulation pipeline, thereby achieving the water quality ratio target at each stage.

[0020] 3. The water flow induction component of this invention includes a circulation pump with two water flow circulation paths, A and B. Water flow circulation path A is used to transport water from the transfer tank to the acclimatization tank at its front end via the circulation pump. Water flow circulation path B is used to transport water from the acclimatization tank at the rear end of the transfer tank to the transfer tank via the circulation pump. During the transfer of shrimp larvae, the circulation pump can drive the water flow, allowing the shrimp larvae to actively follow the direction of the water flow to complete the entire transfer process under the influence of the current. The whole process simulates the natural water flow, avoiding physical damage and severe stress to the shrimp larvae caused by artificial fishing or strong mechanical driving. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a front view structural diagram of the present invention;

[0023] Figure 3 This is a schematic cross-sectional view of the inflatable airbag in the salinity acclimatization tank of the present invention in its uninflated state.

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the inflatable airbag in the salinity acclimatization tank of the present invention in the state of inflation.

[0025] Figure 5 This is a schematic diagram of the connection structure of the bottom net, aeration disc, and expansion air bladder of the present invention;

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the water quality acclimatization tank of the present invention;

[0027] Figure 7 This is a schematic diagram of the salinity acclimatization tank and the C-shaped guide pipe in their separated state according to the present invention;

[0028] Figure 8 This is a schematic diagram of the disassembled structure of the transfer groove and the C-shaped guide tube of the present invention;

[0029] Figure 9 This is a schematic diagram of the water purification and conditioning component structure of the present invention;

[0030] Figure 10 This is a schematic diagram of the internal structure of the purification box of the present invention;

[0031] Figure 11 This is a schematic diagram of the water flow induction component structure of the present invention;

[0032] Figure 12 This is a schematic diagram of the cross-sectional structure of the C-shaped guide tube of the present invention.

[0033] In the diagram: 1. Salinity acclimatization tank; 2. Ion acclimatization tank; 3. Water quality acclimatization tank; 31. Seedling emergence pipe; 32. Seedling emergence gate valve; 4. Transfer tank; 41. Water inlet channel; 42. Drainage channel; 43. Transfer gate valve; 5. Frame assembly; 51. Upper support plate; 52. Lower support plate; 53. Support legs; 6. Water purification and conditioning assembly; 61. Purification tank; 62. Liquid inlet pipe; 63. Liquid outlet pipe; 64. Drainage solenoid three-way valve; 65. Drainage pipe; 66. Suction pump; 67. Filling pipe; 68. Filling pump; 69. Electric... Heat pipe; 610. Integrated online water quality monitoring tube; 611. Baffle; 612. Filter cotton; 613. Biological filter ball; 614. Filling solenoid three-way valve; 7. Water flow induction component; 71. Circulation pump; 72. Liquid inlet solenoid three-way valve; 73. Liquid outlet solenoid three-way valve; 74. First liquid extraction pipe; 75. Second liquid extraction pipe; 76. First liquid return pipe; 77. Second liquid return pipe; 8. C-shaped guide pipe; 81. Guide hole; 9. Bottom screen; 91. Aeration disc; 92. Telescopic pipe; 93. Inflatable air bladder; 94. Mesh frame. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figures 1 to 12As shown, a saline-alkali pond shrimp larvae acclimatization system includes an acclimatization tank assembly. The acclimatization tank assembly comprises a salinity acclimatization tank 1, an ion acclimatization tank 2, and a water quality acclimatization tank 3 arranged sequentially along the acclimatization process. Transfer tanks 4 are provided between adjacent acclimatization tanks. Each acclimatization tank is equipped with a water source purification and conditioning component 6, and each transfer tank 4 is equipped with a water flow induction component 7. A bottom net 9 is provided at the bottom of each acclimatization tank. Inflatable airbags 93 are located below the bottom net 9 at the bottom of the salinity acclimatization tank 1 and the ion acclimatization tank 2. The upper end of the sidewall of the transfer tank 4 is connected to the acclimatization tank in front of it, and the lower end of the sidewall of the transfer tank 4 is connected to the acclimatization tank behind it. The three sequentially arranged salinity acclimatization tanks 1, ion acclimatization tank 2, and water quality acclimatization tank 3 achieve isolation and independent control of environmental parameters, ensuring that the shrimp larvae are under optimal and stable water quality conditions at each acclimatization stage. This overcomes the continuous stress on the shrimp larvae caused by continuous water quality adjustments in a single water body. To address the issue of parameter interference, the transfer tank 4 set between adjacent acclimatization tanks provides a dedicated channel for the low-stress transfer of shrimp larvae. Each acclimatization tank is equipped with a water purification and conditioning component 6, which can purify the water in real time and accurately add the required liquid according to the goals of each stage, ensuring the long-term stability and controllability of the water quality in each tank. Each transfer tank 4 is equipped with a water flow induction component 7, which can simulate natural water flow and use the shrimp larvae's tendency to follow the flow to drive and transfer them. The bottom net 9 can separate the shrimp larvae from the uneaten feed, feces and other dirt that may accumulate at the bottom of the tank, reducing the risk of shrimp larvae coming into contact with pathogens and harmful substances, while also facilitating bottom cleaning operations. The inflatable airbag 93 increases in volume by inflating, thereby directly raising the bottom net 9 above it and the water level of the entire water body, ensuring that the water level in the tank can reach and exceed the inlet height of the water inlet channel 41 connected to the transfer tank 4 when shrimp larvae need to be transferred, thus establishing a water flow path based on the water level difference between the front and rear acclimatization tanks and the transfer tank 4, so as to facilitate the transfer of shrimp larvae.

[0037] The water purification and conditioning component 6 includes a purification tank 61. The purification tank 61 is connected to its matching acclimatization tank by an inlet pipe 62 and an outlet pipe 63. The outlet pipe 63 is connected to an electric heating tube 69, an integrated online water quality monitoring tube 610, and multiple injection pipes 67. The electric heating tube 69 connected to the outlet pipe 63 controls the temperature of the circulating return water, ensuring that the water temperature in the tank can be maintained within the optimal physiological range for shrimp larvae under different acclimatization stages and external climatic conditions. The integrated online water quality monitoring tube 610 can monitor the flowing water in real time and obtain data such as salinity, ion concentration, and pH. Each injection pipe 67 can be connected to different external liquid storage tanks through an injection pump 68 to quantitatively inject fresh water, concentrated saline water, mineralizing agents, or pond raw water into the circulation pipeline, thereby achieving the water quality ratio target at each stage.

[0038] The water flow induction component 7 includes a circulation pump 71, which has two water flow circulation paths, A and B. Water flow circulation path A is used to transport water in the transfer tank 4 to the acclimatization tank at its front end via the circulation pump 71. Water flow circulation path B is used to transport water in the acclimatization tank at the rear end of the transfer tank 4 to the transfer tank 4 via the circulation pump 71. During the transfer of shrimp larvae, the circulation pump 71 can drive the flow of water, so that the shrimp larvae can actively follow the direction of the water flow to complete the entire transfer process under the influence of the current. The whole process simulates the natural water flow and avoids the physical damage and severe stress caused to the shrimp larvae by artificial fishing or strong mechanical driving.

[0039] Example 2

[0040] Improvements based on Example 1:

[0041] like Figure 1 and Figure 6 As shown, the side wall of the water quality acclimatization tank 3 away from the ion acclimatization tank 2 is connected to a hatching pipe 31, and the connection position of the hatching pipe 31 is located at the lower end of the tank wall of the water quality acclimatization tank 3. A hatching gate valve 32 is installed on the hatching pipe 31. The hatching pipe 31 is connected to the lower end of the tank wall, making full use of the static pressure of the water itself and the shrimp larvae's tendency to move to the bottom. When the hatching gate valve 32 is opened, the shrimp larvae can naturally enter the pipe with the bottom water flow, avoiding the crowding, collision and out-of-water stress caused by using nets to catch them, thus maximizing the preservation of the acclimatization results. The hatching gate valve 32 can easily control the opening and closing of the hatching pipe 31.

[0042] like Figure 1 , Figure 2 and Figure 8 As shown, the transfer tank 4 is connected to the acclimatization tank at its front end by an inlet channel 41, and to the acclimatization tank at its rear end by a drainage channel 42. Both the inlet channel 41 and the drainage channel 42 are equipped with transfer gate valves 43. The inlet channel 41 and the drainage channel 42 form the waterway for shrimp larvae transfer. During the regular acclimatization phase, all transfer gate valves 43 are closed, isolating each acclimatization tank from the transfer tank 4, ensuring the independence and stability of water quality at each stage. When shrimp larvae need to be transferred, only the transfer gate valves 43 on the corresponding inlet channel 41 and drainage channel 42 of the transfer tank 4 need to be opened. Combined with the rise in the water level of the front acclimatization tank, a transfer water flow path can be quickly established. After the transfer is completed, the gate valves are closed, and each unit returns to isolation, preventing accidental mixing of water from different tanks during non-transfer periods.

[0043] like Figure 1As shown, a frame assembly 5 is provided below the acclimatization tank assembly. The frame assembly 5 includes an upper support plate 51 and a lower support plate 52 that are arranged in parallel vertically. Vertical support feet 53 are fixedly connected to the four corners of the upper support plate 51 and the lower support plate 52. Each acclimatization tank of the acclimatization tank assembly and the pump body of the circulation pump 71 are fixedly connected to the upper support plate 51. The circulation pump 71 is located directly below the matching transfer tank 4. The purification box 61 is fixedly connected to the lower support plate 52. The frame assembly 5 provides a stable physical support platform for the entire acclimatization system, so as to ensure the stable progress of the entire shrimp larvae acclimatization process.

[0044] like Figure 2 , Figure 9 and Figure 10 As shown, the purification tank 61 has two layers of baffles 611 inside, with gaps between the two layers of baffles 611 and the upper and lower inner walls of the purification tank 61. Filter cotton 612 and biological filter balls 613 are sandwiched between the two layers of baffles 611, with the filter cotton 612 located above and below the biological filter balls 613. The two layers of baffles 611 can support and restrict the filter cotton 612 and biological filter balls 613 inside, preventing the filter cotton 612 or biological filter balls 613 from moving under the impact of water flow. 2. Together with the biological filter ball 613, it forms a three-stage filtration system. The lower layer of filter cotton 612 first intercepts most of the suspended particles, uneaten feed, and feces in the water. The biological filter ball 613, with its huge specific surface area, enriches and cultivates microbial communities such as nitrifying bacteria, which specifically degrade toxic ammonia nitrogen and nitrite dissolved in the water. The upper layer of filter cotton 612 prevents tiny biofilm fragments or particles that may detach from the biological filter ball 613 from returning to the aquaculture tank, thus simultaneously completing the two major functions of solid-liquid separation and biological purification.

[0045] Furthermore, the inlet pipe 62 is connected between the bottom of the purification tank 61 and the bottom of its matching acclimatization tank, and the body of the inlet pipe 62 is connected to a drain pipe 65. A drain solenoid three-way valve 64 is connected to the junction of the drain pipe 65 and the inlet pipe 62. The outlet pipe 63 is connected between the top of the purification tank 61 and the top of its matching acclimatization tank, and the body of the outlet pipe 63 is connected to a suction pump 66. The pump body of the suction pump 66 is fixedly connected to the purification tank 61. The drain solenoid three-way valve... 64 is connected to the external terminal signal, and the suction pump 66 is electrically connected to the external power supply. The inlet pipe 62 facilitates the pumping of dirty water deposited at the bottom of the tank into the purification system, while the purified clean warm water is returned from the surface. This promotes the exchange of temperature between the upper and lower parts of the water in the tank and helps to maintain the uniformity of water quality and temperature. When it is necessary to thoroughly clean the tank, carry out maintenance, or change batches, the water in the tank can be directly drained by switching the drain solenoid three-way valve 64 without flowing through the purification box 61.

[0046] Furthermore, one end of the filling pipe 67 is connected to the connection point of the outlet pipe 63 with a filling solenoid three-way valve 614, and the other end of the filling pipe 67 is connected to an external filling liquid storage tank. A filling pump 68 is installed on the body of the filling pipe 67. The filling liquid storage tanks connected to the salinity acclimatization tank 1 through the filling pipe 67 include, but are not limited to, fresh water tanks and concentrated saline-alkali water tanks. The integrated online water quality monitoring pipe 610 matched with the salinity acclimatization tank 1 integrates sensors including, but not limited to, salinity sensors and temperature sensors. The filling liquid storage tanks connected to the ion acclimatization tank 2 through the filling pipe 67 include, but are not limited to, basic water storage tanks. The tanks and compound mineralizing agent solution tanks should be noted as follows: the base water in the base water storage tank has the same salt-alkali ratio as the water in the salinity acclimatization tank 1, and the integrated online water quality monitoring tube 610 matched with the ion acclimatization tank 2 integrates sensors including, but not limited to, a salinity sensor, a temperature sensor, a potassium ion selective electrode, and a pH composite electrode. The injection storage tanks connected to the water quality acclimatization tank 3 through the injection pipe 67 include, but are not limited to, a main water storage tank and a buffer water storage tank. It should be noted that the main water in the main water storage tank is the raw water of the target pond, and the buffer water in the buffer water storage tank is the same as that in the ion acclimatization tank. The water in tank 2 has the same ion concentration ratio, and the integrated online water quality monitoring tube 610 matched with the water quality acclimatization tank 3 integrates sensors including, but not limited to, salinity sensors, temperature sensors, potassium ion sensors, pH and ammonia nitrogen sensors. Through the solenoid three-way valve 614, each injection pipe 67 is connected to the main return line, allowing various additives to be rapidly and evenly mixed in the return water flow before entering the acclimatization tank, avoiding excessively high local concentrations. The injection pump 68 provides independent quantitative delivery power for each liquid. The salinity acclimatization tank 1 is connected to the freshwater tank and the concentrated saline-alkali water tank, achieving a precise gradient increase in salinity through proportional adjustment; Sub-acclimatization tank 2 connects to a base water tank with stable composition and a tank for a specially made compound mineralizing agent solution, specifically adjusting the concentration of potassium, magnesium, calcium, and other ions based on a fixed salinity. Water quality acclimatization tank 3 connects to the target pond's raw water tank and buffer water tank, realizing the final transition of the water body to the real aquaculture environment. The integrated online water quality monitoring tube 610 configured allows the salinity acclimatization tank 1 to detect salinity and temperature to control salinity. Ion acclimatization tank 2 adds potassium ion and pH electrodes to monitor ion regulation. Water quality acclimatization tank 3 further adds an ammonia nitrogen sensor to comprehensively assess the final water quality, realizing precise adjustment of various components of the water in each acclimatization tank.

[0047] like Figure 2 and Figure 11As shown, a first suction pipe 74 connects the inlet of the circulating pump 71 to the bottom of the transfer tank 4, and a second suction pipe 75 connects the inlet of the circulating pump 71 to the bottom of the rear acclimatization tank. An inlet solenoid three-way valve 72 is installed between the first suction pipe 74, the second suction pipe 75, and the inlet of the circulating pump 71. A first return pipe 76 connects the outlet of the circulating pump 71 to the upper end of the transfer tank 4, and a second return pipe 77 connects the outlet of the circulating pump 71 to the bottom of the front acclimatization tank. An outlet solenoid three-way valve 73 is installed between the first return pipe 76, the second return pipe 77, and the outlet of the circulating pump 71. The circulating pump 71, the first suction pipe 74, and the first return pipe 76 form a water circulation path A. The circulating pump 71, the second suction pipe 75, and the second return pipe 77 constitute the B-flow circulation path. The circulating pump 71, the inlet solenoid three-way valve 72, and the outlet solenoid three-way valve 73 are all electrically connected to an external power supply. By controlling the switching of the inlet solenoid three-way valve 72 and the outlet solenoid three-way valve 73, two directions of water flow can be created in the transfer tank 4: Path A is used to form a supplementary water flow to the front tank in the transfer tank 4 after the water level in the front tank is raised and the water inlet channel 41 is opened. This supplementary water flow works in conjunction with the mainstream flow caused by the water level difference to further enhance the shrimp attraction effect. Path B can create a guiding water flow to the rear tank in the transfer tank 4 in the later stage of the transfer to assist the shrimp larvae in completing the final stage of the transfer. The entire process does not require physical contact with the shrimp larvae, which greatly reduces stress.

[0048] like Figure 7 , Figure 8 and Figure 12 As shown, C-shaped guide pipes 8 are fixedly connected to the upper inner walls of salinity acclimatization tank 1, ion acclimatization tank 2, water quality acclimatization tank 3, and transfer tank 4. The C-shaped guide pipes 8 connected to salinity acclimatization tank 1, ion acclimatization tank 2, and water quality acclimatization tank 3 are connected to the outlet pipe 63, and the C-shaped guide pipe 8 connected to transfer tank 4 is connected to the first return pipe 76. Several guide holes 81 are opened at the bottom of the C-shaped guide pipe 8, which changes the water flow in the corresponding tank from point source injection to multiple surface source fine streams evenly distributed along the tank wall. This reduces the impact on the water in the tank, avoids the strong water flow from frightening the shrimp larvae, and promotes the rapid and uniform mixing of new water with the original water in the tank, providing an extremely stable and uniform environment for the shrimp larvae.

[0049] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, a mesh frame 94 is fixedly connected to the outer periphery of the bottom mesh 9, and the mesh frame 94 is in contact with the inner wall of each acclimatization tank. An aeration disc 91 is fixedly connected to the mesh body of the bottom mesh 9. The aeration disc 91 in the water quality acclimatization tank 3 is connected to the external air supply pipeline. The aeration discs 91 in the salinity acclimatization tank 1 and the ion acclimatization tank 2 are connected to the external air supply pipeline by a telescopic pipe 92 installed in the tank. The expansion air bladders 93 in the salinity acclimatization tank 1 and the ion acclimatization tank 2 are connected to the external air inflation pipeline. 91 is responsible for daily oxygenation. The aeration disc 91 of the water quality acclimatization tank 3 is directly connected to the outside, while the aeration discs 91 of the salinity acclimatization tank 1 and the ion acclimatization tank 2 are connected through the telescopic pipe 92. The telescopic pipe 92 provides longitudinal displacement margin for the aeration disc 91. When the expansion air bladder 93 located below the bottom net 9 inflates to raise the water level, the bottom net 9 will deform or rise. At this time, the telescopic pipe 92 can extend and retract flexibly to ensure that the air supply pipeline of the aeration disc 91 will not be pulled due to the displacement of the bottom net 9.

[0050] Working principle: When the system starts, the shrimp larvae are first placed in the salinity acclimatization tank 1, which is pre-filled with fresh water. The water purification component 6 starts working, the suction pump 66 starts, and drives the water in the tank to enter the purification tank 61 through the liquid inlet pipe 62 for purification. The purified water flows back through the liquid outlet pipe 63. During this process, the integrated online water quality detection pipe 610 monitors the salinity and temperature of the water in real time and controls the operation of the injection pump 68 connected to the injection pipe 67 to inject liquid from the fresh water tank and the concentrated saline water tank into the circulation pipeline in a quantitative manner. At this stage, the shrimp larvae mainly complete the initial adaptation to the change in osmotic pressure.

[0051] Once the salinity acclimatization reaches the target, the system initiates the transfer of shrimp larvae to the ion acclimatization tank 2. At this time, the expansion airbag 93 at the bottom of the salinity acclimatization tank 1 inflates and pushes the bottom net 9 upward, raising the water level in the entire tank to a level higher than the inlet of the water inlet channel 41 connected to the transfer tank 4. Simultaneously, the transfer gate valve 43 on the water inlet channel 41 and the drainage channel 42 is opened. Due to the water level difference, the water naturally flows from the salinity acclimatization tank 1 through the transfer tank 4 to the ion acclimatization tank 2, forming an induced water flow. At the same time, the water flow induction component 7 is activated. After the control system operates the inlet solenoid three-way valve 72 and the outlet solenoid three-way valve 73, the circulation pump 71 works along path A, pumping the water in the transfer tank 4 back to the salinity acclimatization tank 1, further strengthening the water flow to the salinity acclimatization tank 1, attracting the shrimp larvae to actively enter the transfer tank 4 and follow the mainstream into the ion acclimatization tank 2.

[0052] After the shrimp larvae enter the ion acclimatization tank 2, the water purification and conditioning component 6 of the tank starts to operate. In addition to monitoring salinity and temperature, the integrated online water quality detection tube 610 monitors ion concentration through potassium ion selective electrode and pH composite electrode. Liquid from the basic water storage tank and the composite mineralizing agent solution tank is precisely added through the injection tube 67 to adjust the concentration of key ions such as potassium, magnesium and calcium in the water to a ratio close to the ideal ratio of the target pond water, thus completing the internal ion balance regulation of the shrimp larvae.

[0053] Subsequently, a similar transfer process is repeated between ion acclimatization tank 2 and water quality acclimatization tank 3. Inflatable airbags 93 are used to raise the water level and create a water level difference-induced flow. Simultaneously, the water flow induction component 7 may switch to path B, pumping water from water quality acclimatization tank 3 into transfer tank 4 to guide the shrimp larvae into the tank. Finally, the shrimp larvae arrive at water quality acclimatization tank 3. In this final stage, the water purification component 6 introduces a large proportion of the target pond's original water through the injection pipe 67, ensuring that the water in the tank is highly consistent with the aquaculture pond in terms of salinity, ion composition, pH, alkalinity, and microbial community. The ammonia nitrogen sensor in the integrated online water quality monitoring pipe 610 continuously monitors water quality safety, allowing the shrimp larvae to fully adapt.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A system for acclimating shrimp larvae in a saline pond, comprising an acclimation tank assembly, characterized by: The acclimatization tank assembly includes a salinity acclimatization tank (1), an ion acclimatization tank (2), and a water quality acclimatization tank (3) arranged sequentially along the acclimatization process. A transfer tank (4) is provided between adjacent acclimatization tanks of the acclimatization tank assembly. Each acclimatization tank of the acclimatization tank assembly is equipped with a water source purification and conditioning component (6). Each transfer tank (4) is equipped with a water flow induction component (7). The bottom of each acclimatization tank of the acclimatization tank assembly is provided with a bottom net (9). The bottom of the salinity acclimatization tank (1) and the ion acclimatization tank (2) is provided with an inflatable airbag (93) located below the bottom net (9). The upper end of the side wall of the transfer tank (4) is connected to the acclimatization tank at its front end, and the lower end of the side wall of the transfer tank (4) is connected to the acclimatization tank at its rear end. The water quality acclimatization tank (3) has a seedling outlet pipe (31) connected to the side wall away from the ion acclimatization tank (2), and the connection position of the seedling outlet pipe (31) is located at the lower end of the tank wall of the water quality acclimatization tank (3). A seedling outlet gate valve (32) is installed on the seedling outlet pipe (31). The transfer tank (4) is connected to the acclimatization tank at its front end by a water inlet channel (41), and the transfer tank (4) is connected to the acclimatization tank at its rear end by a drainage channel (42). Both the water inlet channel (41) and the drainage channel (42) are equipped with transfer gate valves (43). The water purification and conditioning component (6) includes a purification box (61), and the purification box (61) is connected to its matching acclimatization tank by an inlet pipe (62) and an outlet pipe (63). The outlet pipe (63) is connected to an electric heating tube (69), an integrated online water quality detection tube (610), and multiple filling pipes (67). The inlet pipe (62) is connected between the bottom of the purification tank (61) and the bottom of its matching acclimatization tank, and the body of the inlet pipe (62) is connected to the drain pipe (65). The drain pipe (65) and the inlet pipe (62) are connected to the drain solenoid three-way valve (64). The outlet pipe (63) is connected between the top of the purification tank (61) and the top of its matching acclimatization tank, and the body of the outlet pipe (63) is connected to the suction pump (66). One end of the filling pipe (67) is connected to the body of the outlet pipe (63) with a filling solenoid three-way valve (614). The other end of the filling pipe (67) is connected to an external filling storage tank. A filling pump (68) is installed on the body of the filling pipe (67). The filling storage tanks connected to the salinity acclimatization tank (1) through the filling pipe (67) include a fresh water tank and a concentrated saline-alkali water tank. The integrated online water quality detection pipe (610) matched with the salinity acclimatization tank (1) integrates a salinity sensor and a temperature sensor. The ion acclimatization tank (2) is connected to the external filling storage tank (63) through the filling pipe (67). The connected injection storage tanks include a base water storage tank and a composite mineralizing agent solution tank. The integrated online water quality detection tube (610) matched with the ion acclimatization tank (2) integrates sensors including a salinity sensor, a temperature sensor, a potassium ion selective electrode, and a pH composite electrode. The injection storage tanks connected to the water quality acclimatization tank (3) through the injection pipe (67) include a main water storage tank and a buffer water storage tank. The integrated online water quality detection tube (610) matched with the water quality acclimatization tank (3) integrates sensors including a salinity sensor, a temperature sensor, a potassium ion sensor, a pH sensor, and an ammonia nitrogen sensor. The water flow induction component (7) includes a circulation pump (71), which has two water flow circulation paths, A and B. A first suction pipe (74) is connected between the inlet end of the circulation pump (71) and the bottom of the transfer tank (4). A second suction pipe (75) is connected between the inlet end of the circulation pump (71) and the bottom of the rear acclimatization tank. An inlet solenoid three-way valve (72) is installed between the first suction pipe (74), the second suction pipe (75), and the inlet end of the circulation pump (71). A first return pipe (76) is connected between the outlet end of the circulation pump (71) and the upper end of the transfer tank (4). A second return pipe (77) is connected between the outlet end of the circulation pump (71) and the bottom of the front acclimatization tank. The first return pipe (76) and the second return pipe (77) are connected to each other. A liquid discharge solenoid three-way valve (73) is installed between the outlet of the circulation pump (77) and the outlet of the circulation pump (71). The circulation pump (71), the first liquid extraction pipe (74) and the first liquid return pipe (76) form a water flow circulation path A. The circulation pump (71), the second liquid extraction pipe (75) and the second liquid return pipe (77) form a water flow circulation path B. The circulation pump (71), the liquid inlet solenoid three-way valve (72) and the liquid outlet solenoid three-way valve (73) are all electrically connected to an external power supply. After the water level in the front acclimatization tank rises and the water inlet channel (41) is opened, the water flow path A forms a supplementary water flow to the front acclimatization tank in the transfer tank (4). In the later stage of the transfer, the water flow path B creates a guiding water flow to the rear acclimatization tank in the transfer tank (4) to assist the shrimp larvae in completing the final stage of the transfer. A mesh frame (94) is fixedly connected to the outer periphery of the bottom mesh (9), and the mesh frame (94) is in contact with the inner wall of each acclimatization tank. An aeration disc (91) is fixedly connected to the mesh body of the bottom mesh (9). The aeration disc (91) in the water quality acclimatization tank (3) is connected to the external air supply pipeline. The aeration disc (91) in the salinity acclimatization tank (1) and the ion acclimatization tank (2) are connected to the external air supply pipeline by a telescopic pipe (92) installed in the tank. The expansion air bladder (93) in the salinity acclimatization tank (1) and the ion acclimatization tank (2) is connected to the external air inflation pipeline.

2. The saline pond larva acclimation system according to claim 1, characterized in that: Below the acclimatization tank assembly is a frame assembly (5), which includes an upper support plate (51) and a lower support plate (52) arranged in parallel. At the four corners of the upper support plate (51) and the lower support plate (52), vertically arranged support feet (53) are fixedly connected. Each acclimatization tank of the acclimatization tank assembly and the pump body of the circulation pump (71) are fixedly connected to the upper support plate (51), and the circulation pump (71) is located directly below the matching transfer tank (4). The purification box (61) is fixedly connected to the lower support plate (52).

3. The saline pond larva acclimation system according to claim 1, wherein: The purification box (61) is equipped with two layers of baffles (611), and there are gaps between the two layers of baffles (611) and the upper and lower inner walls of the purification box (61). Filter cotton (612) and biological filter balls (613) are sandwiched between the two layers of baffles (611), and the filter cotton (612) is located on the upper and lower sides of the biological filter balls (613).

4. The saline-alkali pond shrimp larvae domestication system according to claim 1, characterized in that: The pump body of the suction pump (66) is fixedly connected to the purification box (61), the discharge electromagnetic three-way valve (64) is connected to the external terminal signal, and the suction pump (66) is electrically connected to the external power supply.

5. The saline-alkali pond shrimp larvae domestication system according to claim 1, characterized in that: The upper inner walls of the salinity acclimatization tank (1), ion acclimatization tank (2), water quality acclimatization tank (3) and transfer tank (4) are all fixedly connected with C-shaped guide pipes (8). The C-shaped guide pipes (8) connected to the salinity acclimatization tank (1), ion acclimatization tank (2) and water quality acclimatization tank (3) are connected to the liquid outlet pipe (63). The C-shaped guide pipe (8) connected to the transfer tank (4) is connected to the first return liquid pipe (76). Several guide holes (81) are opened at the bottom of the C-shaped guide pipe (8).

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