Upwelling circulating water culture system for high-density culture of abalone larvae and use method

Abstract

The invention relates to an upwelling circulating water culture system for high-density culture of abalone larvae and a use method. Relates to the technical field of abalone recirculating aquaculture. Comprising a circulating water system, a breeding barrel, an electric one-way check valve, an electric adjusting valve and a drain valve, a water outlet of the circulating water system is connected with a water inlet of the breeding barrel through a water inlet pipeline sequentially provided with the electric one-way check valve and the electric adjusting valve, and a water outlet of the breeding barrel is connected with the water inlet end of the circulating water system through a water return pipe. A water outlet branch is arranged between the electric one-way check valve and the breeding cylinder, and the drain valve is arranged on the water outlet branch. Based on the characteristics of abalone larva culture, a three-dimensional culture system with bottom water rising flow is designed, meanwhile, the water flow direction is controlled to rise in a one-way mode through the water pump and the electric one-way check valve, high-density accumulation and adhesion of fertilized eggs in local areas in the pond are reduced, the metamorphosis rate of abalone larvae subjected to abalone larva circulating water culture is greatly increased, and the survival rate of abalone larvae is increased. And high-density accumulation of fertilized eggs in a local space is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of abalone circulating aquaculture, and in particular to an upwelling circulating aquaculture system for high-density cultivation of abalone larvae and a method for using the system. Background Art

[0002] In traditional Chinese abalone artificial breeding, fertilized eggs are typically artificially inseminated in 5L containers and then transferred to a 3×6×0.9m breeding pond (cultivation density 0.3 ind / ml) within 30-60 minutes. This model presents significant technical bottlenecks: fertilized eggs tend to form dense, adherent accumulations on the pond bottom, and biological contamination from decomposing dead eggs significantly impacts water quality stability. While water changes can alleviate contamination pressure, the resulting fluctuations in water parameters (temperature and salinity) can create secondary stresses on larval development, ultimately leading to an industry-wide metamorphosis rate of less than 5%. Summary of the Invention

[0003] In response to the technical problems raised above, an upwelling circulating water aquaculture system for high-density cultivation of abalone juveniles and a method for use are provided, aiming to improve the utilization rate of aquaculture space, optimize sewage discharge efficiency, reduce the occurrence of diseases, and simplify the manual operation process.

[0004] The technical means adopted in the present invention are as follows: An upwelling circulating water aquaculture system for high-density cultivation of abalone larvae comprises a circulating water system, a breeding tube, an electric one-way check valve, an electric regulating valve and a drain valve. The water outlet of the circulating water system is connected to the water inlet of the breeding tube via a water inlet pipeline in which the electric one-way check valve and the electric regulating valve are sequentially arranged. The water outlet of the breeding tube is connected to the water inlet end of the circulating water system via a return pipe. A water outlet branch is provided between the electric one-way check valve and the breeding tube, and the drain valve is arranged on the water outlet branch.

[0005] Furthermore, the circulating water system includes a water cylinder body, a water permeable partition is provided in the water cylinder body, and the top of the water permeable partition serves as a filter cylinder connected to the water inlet end of the circulating water system. A water pump is provided in the water cylinder body, and the output end of the water pump is connected to the outlet pipe of the circulating water system.

[0006] Furthermore, an ultraviolet disinfection lamp is provided on the water outlet pipe of the circulating water system.

[0007] Furthermore, there are multiple breeding tubes, which are respectively installed on the system bracket. The water outlet pipe at the output end of the ultraviolet disinfection lamp is connected to a plurality of water outlet branch pipes, which are respectively connected to the water inlet ends of the corresponding breeding tubes.

[0008] Furthermore, an aeration plate is provided at the bottom of the water tank body, and the aeration plate is connected to an air pump.

[0009] Furthermore, a filter drum is provided at the internal water outlet of the breeding cylinder, and an 80-100 mesh screen is sleeved on the outside of the filter drum.

[0010] Furthermore, a filter material is laid on the top of the permeable partition, and the filter material is at least one of a ceramic ring and fine ceramsite.

[0011] The present invention also discloses a method for using the above-mentioned upwelling circulating aquaculture system for high-density cultivation of abalone larvae, comprising the following steps: According to the design drawings, place the water tank of the circulating water system in the appropriate position, install the permeable partition, and lay the filter material on the permeable partition to form a filter tank; The water pump is installed in the water tank body, and the output end is connected to the outlet pipe of the circulating water system. At the same time, an ultraviolet disinfection lamp is installed on the outlet pipe. After the ultraviolet disinfection lamp, several outlet branch pipes are connected to the water inlet end of each breeding tube respectively; Install multiple aquaculture tubes at corresponding positions on the system bracket. Connect the water outlet of the aquaculture tubes to the water inlet of the circulating water system through the return pipe. At the same time, set a water outlet branch and install a drain valve on the water inlet pipe between the electric one-way check valve and the aquaculture tubes. Check that all joints are well sealed to ensure there are no leaks. Fill the water tank to the appropriate level, start the air pump, and allow the air to oxygenate the water through the aeration plate. Observe the dissolved oxygen in the water and adjust the air pump flow rate to reach a level suitable for the growth of abalone larvae. Turn on the ultraviolet disinfection lamp to preheat it. At the same time, adjust the electric one-way check valve, electric regulating valve, and drain valve to their initial state. Abalone larvae are stocked into each culture tube at a certain density, and the appropriate stocking density is determined based on the size and expected growth of the abalone larvae; Start the water pump, and the water is pumped out from the filter tank of the water tank body after being filtered. After being disinfected by the ultraviolet disinfection lamp, it flows into each breeding tube through the outlet branch pipe equipped with an electric one-way check valve and an electric regulating valve.

[0012] Furthermore, during the breeding process, the drain valve is in a normally closed state, and after the breeding stage is over, the drain valve is in an open state.

[0013] Compared with the mainstream abalone aquaculture technology model, the upwelling circulating aquaculture system for high-density cultivation of abalone larvae provided by the present invention has the following main advantages: 1. Based on the characteristics of abalone larvae culture, a three-dimensional aquaculture system with "upward" flow of bottom water is designed. At the same time, the water flow direction is controlled to rise in one direction through a water pump and an electric one-way check valve, which reduces the high-density accumulation and adhesion of fertilized eggs in local areas of the pond. This greatly improves the metamorphosis rate of abalone larvae in recirculating water culture of abalone larvae and avoids the high-density accumulation of fertilized eggs in local spaces.

[0014] 2. Based on the characteristics of abalone juvenile aquaculture, the water inlet pipe is placed at the bottom of a transparent barrel-shaped container, so that the water inlet direction is from bottom to top and eventually overflows from the filter drum into the return pipe, thereby improving the efficiency of removing residual pollutants in the aquaculture substrate, effectively improving the problem of substrate corruption, and reducing the incidence of diseases; at the same time, the outlet of the water inlet pipe is ensured to be upward, and the seawater flow environment is artificially simulated through an electric regulating valve to reduce energy loss during the floating process.

[0015] 3. Based on the characteristics of abalone farming and price negotiation based on specifications, the barrel wall is connected to the water outlet in a transparent barrel-type container, a filter drum is installed and abalone farming is carried out. When collecting the abalone after they are grown, the electric one-way check valve is directly powered off to close it, the electric regulating valve is opened to the maximum, and the drain valve is opened to drain the water. After the drain valve is opened to the maximum, the water in the transparent barrel-type container rushes out with the abalone. The high flow rate and large water body cause the abalone to fall to the bottom of the breeding box and be discharged with the drainage, which greatly facilitates the collection of grown abalone. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 This is a schematic diagram of the structure of an upwelling circulating water aquaculture system suitable for high-density cultivation of abalone larvae.

[0018] Figure 2 Schematic diagram of water circulation in the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the breeding tube in the present invention.

[0020] In the figure: 1. Outlet pipe; 2. Ultraviolet disinfection lamp; 3. Electronic flow meter; 4. Venturi tube; 5. Electric one-way check valve; 6. Electric regulating valve; 7. Transparent barrel container; 8. Filter drum; 9. Return pipe; 10. Filter tank; 11. Permeable partition; 12. Water pump; 13. Aeration plate; 14. Thermostat; 15. Air pump; 16. Drain valve; 17. Water reservoir; 18. System bracket; 19. Water outlet; 20. Water inlet. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0025] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0026] For ease of description, spatially relative terms such as "above," "above," "on the upper surface of," and "above" may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "on top of" another device or structure would then be positioned as "below" or "below" the other device or structure. Thus, the exemplary term "above" may include both the orientations of "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0028] like Figures 1-3 As shown, an embodiment of the present invention discloses an upflow circulating water aquaculture system for high-density cultivation of abalone juveniles, comprising a circulating water system, a breeding tube, an electric one-way check valve 5, an electric regulating valve 6 and a drain valve 16. The water outlet of the circulating water system is connected to the water inlet of the breeding tube through a water inlet pipeline in which the electric one-way check valve 5 and the electric regulating valve 6 are sequentially arranged. The water outlet 19 of the breeding tube is connected to the water inlet end of the circulating water system through a return pipe 9. A water outlet branch is provided between the electric one-way check valve 5 and the breeding tube, and the drain valve 16 is provided on the water outlet branch.

[0029] Research has confirmed that two key technological breakthroughs have been achieved by constructing a dynamic water flow simulation system: one is to eliminate the local accumulation effect caused by the uneven spatial distribution of larvae; the other is to optimize the hydrodynamic environment to reduce energy loss during the planktonic period, so that more biological energy reserves can be directed for metamorphosis and development. This will become the core technical path to improve the quality and efficiency of the factory-based seedling cultivation system.

[0030] In this embodiment, the culture tube is a transparent barrel-shaped container 7, with a cylindrical upper end and a spherical lower end that smoothly transitions to a water inlet 20. The inlet has a predetermined diameter, allowing abalone larvae to be discharged from the inlet after reaching a certain size. The diameter of the water inlet is smaller than that of the culture tube. The illustrated culture tubes contain 12 (arranged in a 3*4 pattern).

[0031] The circulating water system further includes a water tank body, which is provided with a permeable baffle 11. Above the permeable baffle 11, a filter tank 10 is connected to the water inlet of the circulating water system. A water pump 12 is provided in the water tank body, and the output end of the water pump 12 is connected to the water outlet pipe 1 of the circulating water system. The outlet of the return pipe 9 is provided above the filter tank 10.

[0032] Furthermore, an ultraviolet disinfection lamp 2 is provided on the water outlet pipe 1 of the circulating water system.

[0033] Furthermore, there are multiple breeding tubes, which are respectively installed on the system bracket 18. The water outlet pipe at the output end of the ultraviolet disinfection lamp 2 is connected to a plurality of water outlet branch pipes, which are respectively connected to the water inlet ends of the corresponding breeding tubes.

[0034] Furthermore, an aeration plate 13 is provided at the bottom of the water tank body, and the aeration plate 13 is connected to an air pump 15 .

[0035] Furthermore, a filter drum 8 is provided at the water outlet of the culture tube, and an 80-100 mesh screen is sleeved on the outside of the filter drum 8. The screen can be gauze.

[0036] Furthermore, a filter material is laid above the permeable partition 11. The filter material is at least one of ceramic rings and fine ceramsite, and may also be coral stone. The partition is a permeable partition. Water entering from the return pipe 9 is filtered by the filter material such as coral stone and fine ceramsite, and then flows through the permeable partition 11 into the bottom tank.

[0037] The water in the transparent barrel-shaped container 7 of the aquaculture system passes through the filter drum 8 and the return pipe 9 to the filter tank 10, and some waste particles are collected in the filter material on the permeable partition 11. The water pump 12 is located at the bottom of the water tank body, and the aeration plate 13 is located at the bottom of the water tank body for continuous aeration. It also includes a thermostat 14 arranged on the inner wall of the water tank body, which is used to detect the temperature of the water after filtration. The air pump 15 is placed outside the water tank body and is mainly responsible for providing aeration to the aeration plate 13. After being filtered by the filter material, the water enters the outlet pipe 1 through the water pump 12.

[0038] As an optional embodiment, the circulating water passes through the filter tank 10, the ultraviolet disinfection lamp 2 and the electronic flow meter 3, and then through the oxygenation device venturi 4, and then through the electric one-way check valve 5 and the electric regulating valve 6 to be re-injected into the transparent barrel-shaped container 7. The system bracket 18 is fixed by welding to support the transparent barrel-shaped container 7.

[0039] The ultraviolet disinfection lamp 2 disinfects the filtered water, the electronic flow meter 3 detects the flow rate of the inflowing water, the venturi tube 4 oxygenates the inflowing water, the electric one-way check valve 5 controls the flow direction of the inflowing water to prevent backflow, and the electric regulating valve 6 controls the opening size of the valve to control the flow rate.

[0040] The return pipe 9 is connected to the filter drum 8 in an inverted L-shape and is located above the transparent barrel-shaped container 7. The water outlet 19 is a hole in the barrel wall, and the return pipe is located on the side of the upper middle portion of the barrel. In this embodiment, the outlet hole has a diameter of 2 cm and is 10 cm from the top of the cylinder. Water flows in the transparent barrel-shaped container 7 in an ascending pattern. The flow rate of this ascending pattern is controlled by the water pump 12, the electronic flow meter 3, and the electric regulating valve 6. The specific set flow rate can be 0 to 10 L / h.

[0041] Preferably, the transparent barrel-shaped container 7 is made of high-quality acrylic sheet, the system bracket is a galvanized steel pipe, and the water inlet pipe and return pipe 9 are made of PVC material.

[0042] The system is replenished with water through a water reservoir 17 to ensure normal operation of the system. The water reservoir 17 is connected to the water tank body through a water treatment device or is directly connected to the water tank body.

[0043] This invention achieves three core advantages: first, it maintains stable water environmental parameters through circulating water control technology; second, it eliminates the localized high-density accumulation of larvae during hatching and the early stages of metamorphosis that occurs in traditional incubation; and third, it optimizes flow rate control, reducing energy loss caused by larvae resisting water flow and ensuring energy reserves during the metamorphosis stage. This system provides an efficient and controllable solution for large-scale breeding of abalone larvae and has important practical value in promoting technological innovation and industrial upgrading in abalone farming.

[0044] The present invention also discloses a method for using the above-mentioned upwelling circulating aquaculture system for high-density cultivation of abalone larvae, comprising the following steps: According to the design drawings, place the water tank of the circulating water system in the appropriate position, install the permeable partition, and lay the filter material on the permeable partition to form a filter tank; The water pump is installed in the water tank body, and the output end is connected to the outlet pipe of the circulating water system. At the same time, an ultraviolet disinfection lamp is installed on the outlet pipe. After the ultraviolet disinfection lamp, several outlet branch pipes are connected to the water inlet end of each breeding tube respectively; Install multiple aquaculture tubes at corresponding positions on the system bracket. Connect the water outlet of the aquaculture tubes to the water inlet of the circulating water system through the return pipe. At the same time, set a water outlet branch and install a drain valve on the water inlet pipe between the electric one-way check valve and the aquaculture tubes. Check that all joints are well sealed to ensure there are no leaks. Fill the water tank to the appropriate level, start the air pump, and allow the air to oxygenate the water through the aeration plate. Observe the dissolved oxygen in the water and adjust the air pump flow rate to reach a level suitable for the growth of abalone larvae. Turn on the ultraviolet disinfection lamp to preheat it. At the same time, adjust the electric one-way check valve, electric regulating valve, and drain valve to their initial state. Abalone larvae are stocked into each culture tube at a certain density, and the appropriate stocking density is determined based on the size and expected growth of the abalone larvae; Start the water pump, and the water is pumped out from the filter tank of the water tank body after being filtered. After being disinfected by the ultraviolet disinfection lamp, it flows into each breeding tube through the outlet branch pipe equipped with an electric one-way check valve and an electric regulating valve.

[0045] Furthermore, during the breeding process, the drain valve is in a normally closed state, and after the breeding stage is over, the drain valve is in an open state.

[0046] In the early stages of aquaculture, the electric regulating valve can be adjusted to a smaller opening to control the water flow rate, creating a relatively gentle upwelling in the aquaculture tube, which facilitates the attachment and growth of abalone larvae. As the abalone larvae grow, the electric regulating valve opening is gradually increased to increase the water flow rate, simulate the natural water flow environment, and promote the feeding and growth of abalone larvae. At the same time, the disinfection time and frequency of the ultraviolet disinfection lamp should be regularly adjusted according to the actual aquaculture conditions and changes in water quality. Generally, disinfection can be carried out for 2-3 hours per day in the early stage. As the aquaculture time is extended and the density increases, the disinfection time can be appropriately increased to 3-5 hours.

[0047] Regularly monitor water quality parameters within the aquaculture tank, such as water temperature, pH, ammonia nitrogen, and nitrite levels. Maintain the water temperature between 18-24°C and the pH between 7.5-8.5. Ammonia nitrogen and nitrite levels should be kept as low as possible. Observe the growth and activity of juvenile abalone and adjust water flow and feed intake accordingly. Regularly check the filter material for blockage. If filtration efficiency is compromised, clean or replace the filter material promptly. Also, regularly check the functioning of the electric check valve and electric regulating valve to ensure accurate and reliable water flow control. Regularly maintain the drain valve to ensure proper opening and closing.

[0048] In addition, if the water quality suddenly deteriorates or abnormal conditions occur in abalone larvae during the breeding process, such as large-scale deaths or lesions, the water pump and electric regulating valve should be immediately turned off to stop the water circulation. At the same time, the drain valve should be opened to drain part of the water in the breeding tube. Water quality should be tested and the cause analyzed in time, and appropriate treatment measures should be taken, such as replacing part of the water, increasing the frequency of disinfection, adjusting the water flow, etc. After the situation stabilizes, the system can be restarted to resume normal breeding.

[0049] After the above device was built, the actual effect of the system in cultivating abalone larvae was verified: The transparent barrel-shaped container 7 recirculating aquaculture system used in the present invention can be set to different water flow rates, and four different flow rate treatment groups (10, 20, 30, and 40 L / h) can be designed. The hatching rate of abalone larvae under each flow rate condition is significantly different.

[0050] Example 1: There was no significant difference in hatching rate between the 10 L / h group and the 40 L / h group, but the hatching rate was significantly higher than that of the 40 L / h group. However, as the flow rate increased, the deformity rate of the larvae increased.

[0051] Comparative Example 2: When the flow rate was 20 L / h, the deformity rate of the larvae was significantly higher than that of the 10 L / h group, but significantly lower than that of the 30 and 40 L / h groups.

[0052] Comparative Example 3: When the flow rate was 30 L / h, the deformity rate of the larvae was significantly higher than that of the 20 L / h group, but significantly lower than that of the 40 L / h group.

[0053] Comparative Example 4: When the flow rate was 40 L / h, the deformity rate of the larvae was significantly higher than that of the 30 L / h group.

[0054] Different flow rates have a significant effect on the survival rate and metamorphosis rate of the larvae. However, when the flow rate is increased to 40L / h, the survival rate and metamorphosis rate of the larvae are significantly lower than those of the 10L / h group. There is no significant difference in the survival rate and metamorphosis rate of the larvae in the 10L / h group, but both are significantly higher than those in the 20L / h group. The upflow larvae breeding system of the present invention, under the premise of ensuring the stability of the aquaculture water quality, can not only reduce the normal adhesion of eggs and dead eggs to each other and the energy consumption of the larvae in the metamorphosis process as much as possible through the intervention of the water flow effect in the flow rate range of 0-10L / h, but also significantly improve the metamorphosis rate and metamorphosis synchronization of the larvae, which has reference value and reference significance for the improvement of factory larval breeding technology and the enhancement of the understanding of larval development biology.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An upwelling circulating water aquaculture system for high-density cultivation of abalone larvae, characterized in that: It includes a circulating water system, a breeding tube, an electric one-way check valve, an electric regulating valve and a drain valve. The water outlet of the circulating water system is connected to the water inlet of the breeding tube through an inlet pipeline in which the electric one-way check valve and the electric regulating valve are sequentially arranged. The water outlet of the breeding tube is connected to the water inlet end of the circulating water system through a return pipe. A water outlet branch is arranged between the electric one-way check valve and the breeding tube, and the drain valve is arranged on the water outlet branch.

2. The upwelling circulating water aquaculture system for high-density cultivation of abalone larvae according to claim 1, characterized in that: The circulating water system includes a water cylinder body, a water permeable partition is provided in the water cylinder body, and the top of the water permeable partition serves as a filter cylinder connected to the water inlet end of the circulating water system. A water pump is provided in the water cylinder body, and the output end of the water pump is connected to the water outlet pipe of the circulating water system.

3. The upwelling circulating water aquaculture system for high-density cultivation of abalone larvae according to claim 1, characterized in that: An ultraviolet disinfection lamp is installed on the outlet pipe of the circulating water system.

4. The upwelling circulating water aquaculture system for high-density cultivation of abalone larvae according to claim 3, characterized in that: There are multiple breeding tubes, which are respectively installed on the system bracket. The water outlet pipe at the output end of the ultraviolet disinfection lamp is connected to a plurality of water outlet branch pipes, which are respectively connected to the water inlet ends of the corresponding breeding tubes.

5. The upwelling circulating water aquaculture system for high-density cultivation of abalone larvae according to claim 1, characterized in that: An aeration plate is provided at the bottom of the water tank body, and the aeration plate is connected to an air pump.

6. The upwelling circulating water aquaculture system for high-density cultivation of abalone larvae according to claim 1, characterized in that: A filter drum is provided at the internal water outlet of the breeding cylinder, and an 80-100 mesh screen is sleeved on the outside of the filter drum.

7. The upwelling circulating water aquaculture system for high-density cultivation of abalone larvae according to claim 1, characterized in that: A filter material is laid on the permeable partition, and the filter material is at least one of a ceramic ring and fine ceramsite.

8. A method for using the upwelling circulating aquaculture system for high-density cultivation of abalone larvae according to any of claims 1 to 7, characterized in that: The steps include: According to the design drawings, place the water tank of the circulating water system, install the permeable partition, and lay the filter material on the permeable partition to form a filter tank; The water pump is installed in the water tank body, and the output end is connected to the outlet pipe of the circulating water system. At the same time, an ultraviolet disinfection lamp is installed on the outlet pipe. After the ultraviolet disinfection lamp, several outlet branch pipes are connected to the water inlet end of each breeding tube respectively; Install multiple aquaculture tubes at corresponding positions on the system bracket. Connect the water outlet of the aquaculture tubes to the water inlet of the circulating water system through the return pipe. At the same time, set a water outlet branch and install a drain valve on the water inlet pipe between the electric one-way check valve and the aquaculture tubes. Check whether each connection is well sealed to ensure there is no water leakage; Fill the water tank to the appropriate water level, start the air pump, allow the gas to pass through the aeration plate to oxygenate the water, observe the dissolved oxygen in the water, adjust the air pump flow rate to make the dissolved oxygen reach a level suitable for the growth of abalone larvae, turn on the ultraviolet disinfection lamp to preheat it, and at the same time adjust the electric one-way check valve, electric regulating valve and drain valve to the initial state; Abalone larvae are stocked into each culture tube at a certain density, and the appropriate stocking density is determined based on the size and expected growth of the abalone larvae; Start the water pump, and the water is pumped out from the filter tank of the water tank body after being filtered. After being disinfected by the ultraviolet disinfection lamp, it flows into each breeding tube through the outlet branch pipe equipped with an electric one-way check valve and an electric regulating valve.

9. The method according to claim 8, characterized in that During the breeding process, the drain valve is in a normally closed state, and after the breeding stage is over, the drain valve is in an open state.

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