A circulating seawater aquaculture system with a shrimp shell separation function

Abstract

The present invention discloses a circulating seawater aquaculture system with a shrimp shell separation function, which includes a migration pool. There is a one-way migration channel flowing from the regulation pool to the migration pool between the migration pool and the regulation pool. There is a one-way migration channel flowing from the migration pool to the aquaculture pool between the migration pool and the aquaculture pool. The regulation pool is connected to the aquaculture pool. The present invention provides a biological migration device including a regulation pool, a migration pool and a migration channel, thereby avoiding the installation of a filter screen at the water outlet of the aquaculture pool. By regularly opening the migration channel, if the South American white shrimp enters the regulation pool from the water outlet, it can migrate back to the aquaculture pool through the migration channel.

Description

Technical Field

[0001] The present invention relates to a circulating seawater aquaculture system with a shrimp shell separation function. Background Art

[0002] The land-based industrialized aquaculture of Litopenaeus vannamei has the advantages of high aquaculture density and being free from environmental factor interference, and has developed rapidly in recent years. In this process, its deficiencies have gradually emerged. For example, the seawater for mariculture needs to be pumped from the ocean. The industrialized aquaculture industry is restricted by the geographical environment and cannot be too far from the coast. The discharge of aquaculture wastewater will also cause environmental pollution and other problems. To solve the above problems, a circulating seawater aquaculture system has been developed. Its principle is to use limited seawater and use a treatment pool to treat aquaculture sewage, and then the treated seawater is replenished into the aquaculture pond.

[0003] During the aquaculture process, Litopenaeus vannamei needs to molt more than 20 times. The molted shrimp shells, excreta of marine organisms, and the fed bait will deteriorate the water quality of the aquaculture pond. Therefore, the aquaculture pond needs to be drained and filled regularly to adjust the water quality of the aquaculture pond. A filter screen is usually provided at the water outlet to prevent aquaculture organisms from approaching. The drawback is that Litopenaeus vannamei has the habit of aggregating on attachments. When the mesh size is small, some large-sized wastes such as molted shells and agglomerated wastes cannot be discharged through the drain outlet. When the mesh size is set large, Litopenaeus vannamei is likely to escape from the drain outlet. Summary of the Invention

[0004] Aiming at the above deficiencies, the purpose of the present invention is to provide a circulating seawater aquaculture system that prevents shrimp from escaping.

[0005] To this end, a circulating seawater aquaculture system with a shrimp shell separation function of the present invention includes a migration pond. A migration channel flowing unidirectionally from the regulation pond to the migration pond is provided between the migration pond and the regulation pond. A migration channel flowing unidirectionally from the migration pond to the aquaculture pond is provided between the migration pond and the aquaculture pond. The regulation pond is communicated with the aquaculture pond.

[0006] Furthermore, a valve is provided on the pipeline connecting the regulation pond and the aquaculture pond. A valve is provided in the migration channel between the regulation pond and the migration pond. The water in the regulation pond can all flow into the migration pond.

[0007] Furthermore, the bottom surface of the migration pond is lower than the bottom surface of the regulation pond. The volume of the part of the migration pond lower than the bottom surface of the regulation pond is larger than the volume of the regulation pond. The migration pond is provided with a water inlet, and the water inlet is used for injecting water into the migration pond and replenishing water to the aquaculture pond through the water outlet of the migration pond.

[0008] Furthermore, it further includes a treatment pond. The aquaculture pond is communicated with the treatment pond through the regulation pond. The treatment pond is used for treating aquaculture sewage and circulating it to the migration pond, and injecting water into the aquaculture pond through the water outlet of the migration pond.

[0009] The migratory pool is provided with a liftable box body. The water in the regulation pool flows into the box body through the migratory channel, and a water outlet is arranged at the bottom of the box body to make the water flow into the breeding pool.

[0010] Furthermore, a diversion groove is arranged on the migratory channel or the box body. The diversion groove is hinged below the pipeline so that the diversion groove can rotate around the hinge shaft, and a return spring is arranged on the diversion groove to reset the diversion groove after rotation.

[0011] Furthermore, a convex block for preventing water from flowing along the outer wall of the pipeline is arranged on the pipeline above the diversion groove.

[0012] Furthermore, a drain outlet communicating with the treatment pool is arranged at the bottom of the regulation pool. The drain outlet is threadedly connected with a water level control pipe, and a water level control port is arranged at the other end of the water level control pipe. The water in the regulation pool can be discharged into the treatment pool through the water level control port.

[0013] Furthermore, a filter screen covering the regulation pool is connected to the pool wall of the regulation pool. A connecting collar is connected in the filter screen, and the collar is sleeved on the water level control pipe.

[0014] The beneficial effect of the present invention is that the present invention provides a biological migratory device including a regulation pool, a migratory pool and a migratory channel. A filter screen with a relatively large mesh or no filter screen can be arranged at the water outlet of the breeding pool. By regularly opening the migratory channel, if the South American white shrimp enters the regulation pool from the water outlet, it can migrate back to the breeding pool through the migratory channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of a specific embodiment for implementing the present invention;

[0016] Figure 2 Schematic diagram of the migratory pool in Embodiment 1;

[0017] Figure 3 Schematic diagram of the migratory pool in Embodiment 2;

[0018] Figure 4 Schematic diagram of the diversion groove;

[0019] Figure 5 Schematic cross-sectional view of the regulation pool;

[0020] Figure 6 Schematic diagram of the water outlet at the bottom of the breeding pool;

[0021] Figure 7 Schematic diagram of the return groove and the diversion groove.

[0022] Description of reference numerals: 1, aquaculture pond; 2, regulating pond; 201, drain outlet; 202, thread; 203, water level control pipe; 204, water level control opening; 3, migration pond; 4, treatment pond; 5, migration channel; 6, valve; 7, water replenishing port; 8, box body; 9, support rod; 10, fixed pulley; 11, hanging cable; 12, winch; 13, diversion trough; 14, guiding part; 141, vertical rod; 142, horizontal rod; 15, support; 16, hinge shaft; 17, spring; 18, convex block; 19, filter screen; 20, collar; 21, water outlet; 22, wedge block; 23, supporting part. Detailed implementation manners

[0023] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following describes in detail the specific implementation manners, structures, features and their effects of the present invention in conjunction with the accompanying drawings and preferred embodiments.

[0024] Referring to Figures 1 to 6 As shown, in the specific embodiment of the present invention, the cultured organism is the South American white shrimp, including an aquaculture pond 1, a regulating pond 2, a migration pond 3 and a treatment pond 4. The aquaculture pond 1 is communicated with the regulating pond 2. A migration channel 5 flowing unidirectionally from the regulating pond 2 to the migration pond 3 is provided between the migration pond 3 and the regulating pond 2. A migration channel 5 flowing unidirectionally from the migration pond 3 to the aquaculture pond 1 is provided between the migration pond 3 and the aquaculture pond 1. The regulating pond 2 is communicated with the treatment pond 4. In this embodiment, the seawater in the aquaculture pond 1 flows from the aquaculture pond 1 to the regulating pond 2, and then from the regulating pond 2 to the treatment pond 4. The purified water after treatment in the treatment pond 4 then flows back to the aquaculture pond 1. All these processes are unidirectional flows. A filter screen 19 can be provided in the regulating pond 2. Since the number of South American white shrimp entering the regulating pond 2 is small, the filter screen 19 can prevent them from escaping from the water level control opening of the regulating pond. In addition, when the water in the aquaculture pond 1 flows into the regulating pond 2, some of the bait in the pond is also brought into the regulating pond 2. Therefore, a small number of South American white shrimp can grow in the regulating pond 2 for a period of time. By regularly opening the migration channel 5 communicated with the regulating pond 2, the South American white shrimp are transferred to the migration pond 3. After being transferred to the migration pond 3, the migration channel 5 between the migration pond 3 and the aquaculture pond 1 is opened, so that the South American white shrimp can return to the aquaculture pond 1 again.

[0025] In the above embodiment, referring to Figure 2 、 Figure 3As shown, a valve 6 is provided on the pipeline connecting the regulating pond 2 and the breeding pond 1, and a valve 6 is provided in the migration channel 5 between the regulating pond 2 and the migration pond 3. The water in the regulating pond 2 can all flow into the migration pond 3. The valve 6 can be a gate valve, a ball valve, a butterfly valve, etc. In this embodiment, when the migration channel 5 between the regulating pond 2 and the migration pond 3 is opened, the channel between the regulating pond 2 and the breeding pond 1 is closed, and the water level of the migration pond 3 is always kept lower than that of the regulating pond 2, so that the water in the regulating pond 2 can completely enter the migration pond 3 with the South American shrimp, avoiding the South American shrimp staying in the regulating pond 2 for a long time. In Example 1, refer to Figure 2 As shown, the bottom surface of the migration pond 3 is lower than that of the regulating pond 2, and the volume of the part of the migration pond 3 lower than the bottom surface of the regulating pond 2 is larger than the volume of the regulating pond 2, so that the water in the regulating pond 2 can completely enter the migration pond 3. Since the water level of the breeding pond 1 is the same as the initial water level of the regulating pond 2, the initial water level refers to the water level of the regulating pond 2 before the migration channel 5 is opened, and the water level of the migration pond 3 is significantly lower than the initial water level of the regulating pond 2. Therefore, the water in the migration pond 3 cannot flow into the breeding pond 1 naturally. In this embodiment, a water replenishing port 7 is provided in the migration pond 3, and the water replenishing port 7 is used to inject water into the migration pond 3. After the migration pond 3 is replenished with water, it replenishes water to the breeding pond 1 through the water outlet of the migration pond 3. The water outlet of the migration pond 3 for replenishing water to the breeding pond 1 is higher than the water level of the breeding pond 1. By replenishing water, a large amount of seawater is injected into the migration pond 3, and the large amount of seawater flowing to the breeding pond 1 will bring the South American shrimp back to the breeding pond 1. The seawater injected by the water replenishing port 7 can be the water supplemented by the outside to make up for the water loss of the circulation system, or the purified water of the treatment pond 4. The water replenishing port 7 is provided in the migration pond 3. Before using the water treated by the treatment pond 4 to replenish the breeding pond 1, the migration channel 5 is opened to transfer the South American shrimp to the migration pond 3 in advance, so as to realize the periodic circulation of the South American shrimp in the regulating pond 2 back to the breeding pond 1. In Example 2, a liftable box body 8 is provided in the migration pond 3. The water in the regulating pond 2 flows through the migration channel 5 to the box body 8, and the bottom of the box body 8 is provided with a water outlet for the water to flow to the breeding pond 1. When it is observed that the South American shrimp in the regulating pond 2 takes migration measures or migrates regularly, first close the valve 6 between the regulating pond 2 and the breeding pond 1, lower the box body 8 below the water level of the regulating pond 2, open the migration channel 5 between the regulating pond 2 and the migration pond 3, transfer the South American shrimp to the box body 8, lift the box body 8 so that the bottom surface of the box body 8 is higher than the water level of the breeding pond 1, and open the water outlet provided on the box body 8 to return the South American shrimp to the breeding pond 1. In Example 2, the size of the migration pond 3 can be larger than that of the box body 8, and the box body 8 can be lifted by a lift, or can also be adopted Figure 3The low-cost and simple method shown includes a hanging cable 11 connected to the middle of the box body 8, a support rod 9 fixed on the wall of the migration pool 3, a fixed pulley 10 fixed on the support rod 9, the fixed pulley 10 being located directly above the hanging cable 11, and the hanging cable 11 being fixed to the winch 12 around the fixed pulley 10. In some other embodiments, the transfer of the South American white shrimp from the box body to the cultivation pond can also be completed by pouring the seawater in the box body into the cultivation pond. To prevent seawater from flowing outside the box body 8, a wedge-shaped block 22 is provided on one side of the box body 8 communicating with the return channel of the regulating pond. An inclined diversion groove 13 can also be provided on the pipeline of the migration channel 5. One end of the diversion groove 13 is hinged to the support 15 of the pipeline. The diversion groove 13 can rotate around the hinge shaft 16. A support part 23 can be provided below the pipeline. Both ends of a spring 17 are connected to the diversion groove 13 and the support part 23. A guiding part 14 is provided below the diversion groove 13. The guiding part 14 includes a vertical rod 141 and a horizontal rod 142. The horizontal rod 142 cooperates with the inclined surface of the wedge-shaped block 22 and is used to push the diversion groove 13 to rotate when the box body 8 rises, so that the diversion groove 13 located above the box body 8 is retracted below the pipeline of the return channel. The working process is as follows. When the box body 8 descends, the bottom of the box body 8 contacts the diversion groove 13 and pushes the diversion groove 13 to retract, so that the box body 8 can smoothly descend below the pipeline of the return channel. At this time, the diversion groove 13 is reset under the action of the spring 17, so that the horizontal rod 142 contacts the inclined surface of the wedge-shaped block 22. When the box body 8 rises, the inclined surface of the wedge-shaped block 22 acts on the horizontal rod 142. As the box body 8 rises, the horizontal rod 142 is pushed, and the horizontal rod 142 drives the diversion groove 13 to rotate and retract, and the box body 8 rises smoothly. A convex block 18 for preventing water from flowing along the outer wall of the pipeline can also be provided below one end of the pipeline. The bottom of the box body 8 is provided with a water outlet, and the water outlet can also be connected to a short pipe, and the short pipe cooperates with the return groove of the return channel for return flow. A diversion groove 13 similar to the above can also be provided on the return channel. Refer to Figure 7 As shown, for example, a support column is provided at the port of the return groove, the diversion groove 13 is hinged on the support column, the lower part of the diversion groove 13 is connected to the spring 17, and when the box body 8 passes by, it can push the diversion groove 13 to rotate up or down so that the box body 8 can pass through. After the box body 8 passes by, the diversion groove 13 is reset under the action of the spring 17.

[0026] In the above embodiments, refer to Figure 5As shown, a drain port 201 communicating with the treatment tank 4 is provided at the bottom of the regulating tank 2. The drain port 201 is connected to a water level control pipe 203 through a thread 202. A water level control port 204 is provided at the other end of the water level control pipe 203. The water in the regulating tank 2 can be discharged into the treatment tank 4 through the water level control port 204. The water level in the regulating tank 2 is the same as that in the breeding tank 1. When the water level in the breeding tank 1 is too high due to water inflow, the water flows from the water level control port 204 of the regulating tank 2 to the treatment tank 4. When various indicators detected in the breeding tank 1 exceed the standard and the water quality of the breeding tank 1 seriously deteriorates, the organisms in the breeding tank 1 are significantly affected and 40% of the total water volume needs to be replaced. The water level control pipe 203 is rotated to open the drain port 201 for emergency water replacement. A filter screen 19 can be provided on the drain port 201 below the water level control pipe 203 to prevent the shrimp from escaping. When there are many large particle wastes entering the regulating tank, they can be removed manually.

[0027] In the above embodiment, referring to Figure 5 As shown, a filter screen 19 covering the regulating pool 2 is connected to the pool wall of the regulating pool 2, a collar 20 is connected in the filter screen 19, and the collar 20 is sleeved on the water level control pipe 203 to prevent the South American shrimp from entering the water level control port 204. Since the filter screen 19 is far away from the water level control port 204, the negative pressure is not obvious, and the South American shrimp is usually not adsorbed on the filter screen 19. In addition, the number of South American shrimp in the regulating pool 2 is small, and the impact is small.

[0028] In the above embodiment, referring to Figure 1 and Figure 6 As shown, a water outlet 21 is provided in the breeding pond 1. The water outlet 21 is provided at the bottom of the breeding pond 1. The water outlet 21 is connected to the regulating pond 2. In this embodiment, the water outlet 21 is provided with a filter screen with a larger mesh.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A circulating seawater aquaculture system with a shrimp shell separation function, characterized in that: It includes a migration pool. There is a migration channel flowing unidirectionally from the regulation pool to the migration pool between the migration pool and the regulation pool. There is a migration channel flowing unidirectionally from the migration pool to the aquaculture pool between the migration pool and the aquaculture pool. The regulation pool is communicated with the aquaculture pool. A valve is provided on the pipeline connecting the regulation pool and the aquaculture pool. A valve is provided in the migration channel between the regulation pool and the migration pool. The water in the regulation pool can all flow into the migration pool. The bottom surface of the migration pool is lower than the bottom surface of the regulation pool. The volume of the part of the migration pool lower than the bottom surface of the regulation pool is larger than the volume of the regulation pool. The migration pool is provided with a water inlet, which is used to inject water into the migration pool and replenish water to the aquaculture pool through the water outlet of the migration pool. It also includes a treatment pool. The aquaculture pool is communicated with the treatment pool through the regulation pool. The treatment pool is used to treat the aquaculture wastewater and circulate it to the migration pool, and inject water into the aquaculture pool through the water outlet of the migration pool. A liftable box body is provided in the migration pool. The water in the regulation pool flows to the box body through the migration channel. The bottom of the box body is provided with a water outlet for the water to flow to the aquaculture pool. One side of the box body facing the return channel communicated with the regulation pool is provided with a wedge-shaped block. An inclined diversion groove is provided on the pipeline of the migration channel. One end of the diversion groove is hinged to the support of the pipeline. The diversion groove rotates around the hinge axis. A support part is provided below the pipeline. Both ends of the spring are connected to the diversion groove and the support part. A guiding part is provided below the diversion groove. The guiding part includes a vertical rod and a horizontal rod. The horizontal rod cooperates with the inclined surface of the wedge-shaped block and is used to push the diversion groove to rotate when the box body rises so that the diversion groove above the box body retracts below the pipeline of the return channel. The pipeline above the diversion groove is provided with a convex block for preventing water from flowing along the outer wall of the pipeline. The bottom of the regulation pool is provided with a drain port communicated with the treatment pool. The drain port is threadedly connected with a water level control pipe. The other end of the water level control pipe is provided with a water level control port. The water in the regulation pool can be discharged into the treatment pool through the water level control port. A filter screen covering the regulation pool is connected to the pool wall of the regulation pool. A sleeve ring is connected in the filter screen. The sleeve ring is sleeved on the water level control pipe.

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