Double-flow fry trough based on ecological needs of fry development process and its use method

Abstract

The present invention relates to a dual-flow nursery tank and its use method, based on the ecological needs of fry development. The tank, which belongs to the field of aquaculture equipment, comprises a nursery tank body and a water inlet pipeline. The nursery tank body is internally divided into a water distribution tank, a horizontal flow water level control tank, a sub-pool swirl water level control tank, and a nursery water area. The nursery tank of the present invention can switch water flow patterns and water inlet and outlet pathways according to the needs of fry development, and implement functions such as common water body classification and classification coarseness, thereby reducing the workload of nursery sub-pool classification, lowering the seedling mortality rate, and improving operational efficiency.

Description

Technical Field

[0001] The present invention belongs to the field of aquaculture facilities, and specifically relates to a dual-flow fry trough based on the ecological requirements of the fry development process and a method of use. Background Art

[0002] Seedling breeding is a key link in achieving the industrialization of improved varieties. In recent years, with the rise of the factory-based seedling industry, the shortcomings of the lack of specialized facilities and equipment have become increasingly prominent. Seedling ponds are the most basic hardware facilities for fish seedling breeding. Depending on the target breeding species, the pond types are generally divided into rectangular, circular and octagonal shapes. Once built, the water inlet and outlet and circulation in the pond are relatively fixed, ignoring the differences in the water environment requirements and seedling technical operations at different developmental stages of fish seedling breeding. This results in frequent pond turnover, merging, and grading, which increases the workload of seedling breeding and reduces operational efficiency. Against the backdrop of the continuous expansion of the factory-based seedling industry and the increasing requirements for precise operations, there is an urgent need to develop multifunctional seedling troughs (ponds) that can meet the ecological needs of the fry development process to match the precise needs of seedling breeding operations. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a dual-flow nursery trough and a method of use based on the ecological needs of the fry development process. The nursery trough can switch the water flow state and water inlet and outlet passages according to the needs of the fry development process, and realize functions such as common water body classification and classification coarseness.

[0004] The present invention is achieved through the following technical solutions:

[0005] A dual-flow seedling raising trough based on the ecological needs of the fry development process, comprising a seedling raising trough body and a water inlet pipeline, wherein the interior of the seedling raising trough body is divided into a water distribution trough, a horizontal flow water level control trough, a sub-pool vortex water level control trough and a seedling raising water area; the water distribution trough and the horizontal flow water level control trough are arranged at both ends of the seedling raising trough body, the area between the water distribution trough and the horizontal flow water level control trough is divided into more than one seedling raising water area by a baffle, the sub-pool vortex water level control trough is arranged on one side of the seedling raising trough body and is of the same length as the seedling raising trough body; the water distribution trough and the seedling raising water area are separated by a water distribution trough overflow plate, the seedling raising water area and the horizontal flow water level control trough are separated by the horizontal flow water level control plate, a permeable trough is provided between the horizontal flow water level control plate and the bottom of the seedling raising trough body; the sub-pool vortex water level control trough and the horizontal flow water level control trough are horizontally connected by the water level control overflow plate;

[0006] The overflow plate of the water distribution trough and the overflow plate of the water level control are both lower than the height of the seedling trough body; the baffle is at the same height as the seedling trough body;

[0007] The sub-pool swirl water level control trough and the seedling water area are connected by a U-shaped sewage collection and drainage connecting pipe. The openings at both ends of the U-shaped sewage collection and drainage connecting pipe are lower than the height of the seedling trough body, and a water outlet and a first sewage outlet are provided at the end of the sub-pool swirl water level control trough away from the water distribution trough;

[0008] The water inlet pipeline is composed of a main water supply pipeline, a water distribution trough water inlet and a sub-pool water inlet. The water distribution trough water inlet and the sub-pool water inlet supply water to the water distribution trough and the seedling water area respectively.

[0009] In some embodiments, the baffle is removable; the seedling water area can change the flow rate and flow state in the seedling tank body by installing and removing the baffle and adjusting the water inlet and outlet methods, and realize the physical separation of the seedling water body.

[0010] In some embodiments, the water level control overflow plate is lower than the water distribution trough overflow plate, and the height difference is greater than or equal to 5 cm.

[0011] In some embodiments, a second sewage outlet is provided at the bottom of the horizontal water level control trough, and a third sewage outlet is provided at the bottom of the water distribution trough.

[0012] In some embodiments, the baffle divides the seedling raising tank body into equal parts, that is, the specifications of each seedling raising water area are equal.

[0013] In some embodiments, the baffle is fixed by a baffle fixing member, and with the help of the baffle fixing member, the individual seedling water area after separation is made into an inner octagonal shape, which is conducive to the formation of a rotating flow state and the collection and discharge of sewage.

[0014] In some embodiments, the baffle is in the form of a water-permeable mesh or a water-impermeable plate.

[0015] In some embodiments, the water-permeable groove is a mesh structure.

[0016] In some embodiments, a seedling hole is provided on the baffle.

[0017] The present invention also provides a method for using the seedling raising trough, which comprises opening the water inlet of the water distribution trough, closing the water inlet of the sub-tank, and removing the baffle. Water enters the seedling raising water area through the water distribution trough overflow plate of the water distribution trough, and then enters the horizontal flow water level control trough through the permeable trough at the bottom of the horizontal flow water level control plate, and then flows into the sub-tank vortex water level control trough through the water level control overflow plate, and is discharged through the water outlet. At this time, the seedling raising trough is horizontal flow, which can achieve a large exchange volume and a low flow rate.

[0018] In some embodiments, the water inlet of the water distribution trough is closed, the water inlet of the sub-tank is opened, and a baffle is installed. After the water flows into the sub-tank vortex water level control trough through the U-shaped sewage collection and drainage connecting pipe, it is discharged through the outlet. At this time, there is vortex in each seedling water area, and the flow rate and flow rate can be adjusted as needed; the baffle is divided into a closed baffle and a baffle with a specific aperture seedling hole according to the size of the fry. When the fry need to be graded and cultivated according to the development process of the fry, manual grading is selected. The fry are concentrated in one area using the baffle with the seedling hole. By opening the water inlet of the water distribution trough and closing the water inlet of the sub-tank, the water flow in the seedling water area is horizontally regulated along the water distribution trough to the horizontal flow water level control trough. By adjusting the flow rate and feeding area, preliminary lossless grading is achieved.

[0019] In some embodiments, after the fry tank body is divided into different fry areas, different feeding strategies are adopted according to the developmental stage of the fry, such as continuing the biological bait cultivation and bait conversion operations.

[0020] The beneficial effects of the present invention compared with the prior art are as follows:

[0021] 1. The dual flow patterns are switched on demand, which better meets the specific ecological needs of different stages of the fry development process. The existing nursery ponds are of a single shape. Once built, the water inlet and outlet and circulation in the ponds are relatively fixed, ignoring the differences in the water environment requirements and nursery technical operations at different developmental stages of fish fry breeding. This results in frequent pond inversion, pool merging, and grading, which increases the workload of fry breeding and reduces operational efficiency. This technology, through the switching combination of pool-type components and dual-channel water inlet and outlet pipes, can achieve a large exchange volume and low flow rate horizontal flow pattern and an adjustable flow rate rotation flow pattern in the same nursery tank, meeting the specific ecological needs of fry for water flow at different developmental stages, improving the sewage collection and drainage effect, and reducing the workload of pond inversion and pool division and stress damage to fry.

[0022] 2. Flexible switching of pool type and space can meet the personalized operation of fry at different development stages in the same batch.

[0023] In the actual seedling production process, due to the developmental characteristics of fry and individual differences, the same batch of fry (fertilized eggs) will show significant differences in size and even stage during the development process. Frying of different sizes or developmental stages has specific requirements for cultivation operations, such as feeding and feed conversion. Carrying out the same operations in the same water body will inevitably make it difficult to take care of all fry. This can easily lead to increased size differentiation, increased culling rate, and increased self-harm rate of fry of some species, seriously affecting the efficiency of seedling operations. Early grading and pooling are difficult, easily causing damage to fry and juveniles, and the workload is heavy. This technology can use baffles (with specific apertures) to divide the pools while adjusting the water flow and feeding strategy to achieve preliminary non-destructive grading. More importantly, it can achieve centralized and separate cultivation of fry of different developmental stages or sizes in the same nursery tank. Targeted cultivation strategies can be applied as needed, making seedling technical management more precise, reducing mortality and culling rates, improving seedling efficiency, and reducing the workload of grading and pooling. In the breeding of specific species such as grouper, the early hatching rate and opening rate are unstable, resulting in a low amount of seedlings. The use of this technical solution can achieve early pond merging, reduce the waste of basic bait and water, and facilitate seedling management and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an overall schematic diagram of a dual-flow nursery trough based on the ecological needs of the fry development process of the present invention: 1. Nursery trough body, 2. Main water supply pipe, 3. Water distribution trough water inlet, 4. Sub-tank water inlet, 5. Water distribution trough, 6. Water distribution trough overflow plate, 7. Baffle fixing part, 8. Baffle, 9. Permeable trough, 10. Horizontal flow water level control trough, 101. Horizontal flow water level control plate, 11. Water level control overflow plate, 121. First sewage outlet, 122. Second sewage outlet, 123. Third sewage outlet, 13. Sub-tank swirl water level control trough, 14. U-shaped sewage collection and drainage connecting pipe, 15. Water outlet.

[0025] Figure 2 This is a plan view of the present invention: 2. Main water supply pipe, 3. Water distribution trough water inlet, 4. Sub-tank water inlet, 5. Water distribution trough, 6. Water distribution trough overflow plate, 7. Baffle fixing part, 8. Baffle, 10. Horizontal flow water level control trough, 11. Water level control overflow plate, 12. Sewage pipe, 13. Sub-tank swirl water level control trough, 14. U-shaped sewage collection and drainage connecting pipe, 15. Water outlet.

[0026] Figure 3 This is the A-A view of the present invention. 7. Baffle fixing member, 8. Baffle, 11. Water level control overflow plate, 12. Sewage pipe, 14. Sewage collection and drainage connecting pipe, 15. Water outlet.

[0027] Figure 4 This is the B-B view of the present invention: 8, baffle, 13, sub-pool vortex water level control groove, 14, U-shaped sewage collection and drainage connecting pipe.

[0028] Figure 5 This is the C-C view of the present invention: 9, permeable trough, 101, horizontal flow water level control plate, 13, sub-pool vortex water level control trough, 14, U-shaped sewage collection and drainage connecting pipe, 15, water outlet. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further explained below through embodiments in combination with the accompanying drawings, but the protection scope of the present invention is not limited in any form by the embodiments.

[0030] Example 1

[0031] like Figures 1 to 5 As shown, this embodiment provides a dual-flow fry trough based on the ecological needs of the fry development process, including a fry trough body 1 and a water inlet pipeline.

[0032] A dual-flow seedling trough based on the ecological needs of the fry development process, including a seedling trough body 1 and a water inlet pipeline, wherein the interior of the seedling trough body is divided into a water distribution trough 5, a horizontal flow water level control trough 10, a sub-pool vortex water level control trough 13 and a seedling water area; the water distribution trough 5 and the horizontal flow water level control trough 10 are arranged at both ends of the seedling trough body, and the area between the water distribution trough 5 and the horizontal flow water level control trough 10 is divided into more than one seedling water area by a baffle 8, and the sub-pool vortex water level control trough 13 is arranged on one side of the seedling trough body and has the same length as the seedling trough body 1; the water distribution trough 5 and the seedling water area are separated by a water distribution trough overflow plate 6, and the seedling water area and the horizontal flow water level control trough 10 are separated by the horizontal flow water level control plate, and a permeable trough 9 is provided between the horizontal flow water level control plate and the bottom of the seedling trough body 1; the sub-pool vortex water level control trough 13 and the horizontal flow water level control trough 10 are horizontally connected by a water level control overflow plate 11;

[0033] The water distribution trough overflow plate 6 and the water level control overflow plate 11 are both lower than the height of the seedling trough body 1; the baffle 8 is the same height as the seedling trough body 1;

[0034] The sub-pool vortex water level control trough 13 and the seedling water area are connected by a U-shaped sewage collection and drainage connecting pipe 14. The openings at both ends of the U-shaped sewage collection and drainage connecting pipe 14 are lower than the height of the seedling trough body 1, and a water outlet 15 and a first sewage outlet 121 are provided at the end of the sub-pool vortex water level control trough 13 away from the water distribution trough 5.

[0035] The water inlet pipeline is composed of a main water supply pipeline 2, a water distribution trough water inlet 3 and a sub-pool water inlet 4. The water distribution trough water inlet 3 and the sub-pool water inlet 4 supply water to the water distribution trough 5 and the seedling water area respectively.

[0036] the baffle 8 is removable; the seedling water area can be changed by installing and removing the baffle 8 and adjusting the water inlet and outlet mode to change the flow rate and flow state in the seedling tank body, and realize the physical separation of the seedling water body.

[0037] The water level control overflow plate 11 is lower than the water distribution trough overflow plate 6, and the height difference is equal to 5 cm.

[0038] A second sewage outlet 122 is provided at the bottom of the horizontal flow water level control tank 10 , and a third sewage outlet 123 is provided at the bottom of the water distribution tank 5 .

[0039] The baffle 8 divides the seedling raising trough body 1 into equal parts, that is, the width of the baffle 8 is equal to the length of the individual seedling raising areas after the division, so that the length and width of each seedling raising water area are consistent.

[0040] The baffle 8 is fixed by the baffle fixing member 7, and with the help of the baffle fixing member 7, the separated single seedling water area is formed into an inner octagonal shape, which is conducive to the formation of a rotating flow state and the collection and discharge of sewage.

[0041] The baffle 8 is in the shape of a water-permeable mesh or a water-impermeable plate.

[0042] The water-permeable groove 9 is a stainless steel mesh structure.

[0043] Baffle 8 is provided with seedling hole.

[0044] Taking sea bass seedlings as an example, in the early stage, the seedling tank body 1 is filled with water and eggs are laid in the seedling water area, the water inlet 3 of the water distribution tank is opened, the water inlet 4 of the sub-tank is closed, the baffle 8 is removed, and the water flows through the water level control overflow plate 11 into the sub-tank vortex water level control 13 and is discharged through the outlet 15 to form a horizontal flow state. According to the development of fertilized eggs and fry, the water inlet 3 of the water distribution tank is adjusted to adjust the water intake. The tail water enters the horizontal flow water level control tank 10 through the permeable groove 9 at the bottom of the horizontal flow water level control plate, and then enters the sub-tank vortex water level control tank 13 through the water level control overflow plate 11 (the water level control overflow plate 11 should be lower than the water distribution tank overflow plate 6, and the height difference is generally controlled at more than 5 cm); finally, it is discharged through the outlet 15; after about 4 weeks, the water is used The seedling hole baffle 8 with a 5mm aperture or gap interval drives the concentrated fry from one side of the water distribution trough 5 to the middle position, fixes the baffle 8 in the baffle fixing part 7, and is induced by water flow and bait. After 24 hours, the baffle 8 with the seedling hole is replaced with a closed baffle 8. The baffle 8 is added according to the actual size of the seedling breeding trough body 1 to perform preliminary classification of the fry. At the same time, the seedling breeding water body is divided into a square inner octagon, the water distribution trough water inlet 3 is closed, and the sub-tank water inlet 4 is opened. The water flows through the U-shaped sewage collection and drainage connecting pipe 14, flows into the sub-tank vortex water level control groove 13, and is discharged through the water outlet 15. At this time, there is a vortex in the seedling breeding trough body 1, and the flow rate and flow velocity can be adjusted as needed. Operations such as bait transfer and seedling marking can also be performed according to the development status of the fry.

Claims

1. A dual-flow nursery tank based on the ecological needs of fry development, characterized in that: The seedling raising trough comprises a seedling raising trough body and a water inlet pipe, the interior of the seedling raising trough body is divided into a water distribution trough, a horizontal flow water level control trough, a sub-pool vortex water level control trough and a seedling raising water area; the water distribution trough and the horizontal flow water level control trough are arranged at both ends of the seedling raising trough body, the area between the water distribution trough and the horizontal flow water level control trough is divided into more than one seedling raising water area by a baffle, the sub-pool vortex water level control trough is arranged on one side of the seedling raising trough body and is of the same length as the seedling raising trough body; the water distribution trough and the seedling raising water area are separated by a water distribution trough overflow plate, the seedling raising water area and the horizontal flow water level control trough are separated by the horizontal flow water level control plate, a permeable trough is provided between the horizontal flow water level control plate and the bottom of the seedling raising trough body; the sub-pool vortex water level control trough and the horizontal flow water level control trough are horizontally connected by the water level control overflow plate; The overflow plate of the water distribution trough and the overflow plate of the water level control are both lower than the height of the seedling trough body; the baffle is at the same height as the seedling trough body; The sub-pool swirl water level control trough and the seedling water area are connected by a U-shaped sewage collection and drainage connecting pipe. The openings at both ends of the U-shaped sewage collection and drainage connecting pipe are lower than the height of the seedling trough body, and a water outlet and a first sewage outlet are provided at the end of the sub-pool swirl water level control trough away from the water distribution trough; The water inlet pipeline is composed of a main water supply pipeline, a water distribution trough water inlet and a sub-pool water inlet, and the water distribution trough water inlet and the sub-pool water inlet supply water to the water distribution trough and the seedling water area respectively; A second sewage outlet is provided at the bottom of the horizontal water level control trough, and a third sewage outlet is provided at the bottom of the water distribution trough; The baffle is fixed by a baffle fixing piece, and with the help of the baffle fixing piece, the individual seedling raising water area after separation is made into an inner octagonal shape, which is conducive to the formation of a rotating flow state and the collection and discharge of sewage.

2. A dual-flow nursery tank based on the ecological needs of fry development according to claim 1, characterized in that: The baffle is detachable and divides the seedling raising trough body into equal parts, that is, the specifications of each seedling raising water area are equal.

3. A dual-flow nursery tank based on the ecological needs of fry development according to claim 1, characterized in that: The water level control overflow plate is lower than the water distribution trough overflow plate, and the height difference is greater than or equal to 5cm.

4. A dual-flow fry trough based on the ecological needs of fry development according to claim 1, characterized in that: The baffle is in the shape of a permeable grid or a non-permeable plate.

5. A dual-flow fry trough based on the ecological needs of fry development according to claim 1, characterized in that: The permeable trough has a mesh structure.

6. The method for using the seedling raising tank according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: opening the water inlet of the water distribution trough, closing the water inlet of the sub-tank, and removing the baffle. Water enters the seedling raising water area through the water distribution trough overflow plate of the water distribution trough, then enters the horizontal flow water level control trough through the permeable trough at the bottom of the horizontal flow water level control plate, and then flows into the sub-tank vortex water level control trough through the water level control overflow plate, and is then discharged through the water outlet. At this time, the seedling raising trough is horizontal flow, the exchange volume is large, and the flow rate is low.

7. The method according to claim 6, characterized in that Close the water inlet of the water distribution trough, open the water inlet of the sub-tank, install the baffle, and the water will flow into the sub-tank vortex water level control trough through the U-shaped sewage collection and drainage connecting pipe, and then be discharged through the outlet. At this time, there is vortex in each seedling water area, and the flow rate and flow rate can be adjusted as needed; the baffles are divided into closed baffles and baffles with specific aperture seedling holes according to the size of the fry. When the fry need to be graded and cultivated according to the development process of the fry, manual grading is selected. The fry are concentrated in one area by using the baffle with seedling holes. By opening the water inlet of the water distribution trough and closing the water inlet of the sub-tank, the water flow in the seedling water area is horizontally oriented along the water distribution trough to the horizontal flow water level control trough. By adjusting the flow rate and feeding area, preliminary lossless grading is achieved.

8. The method according to claim 7, characterized in that After the main body of the nursery tank is divided into different nursery areas, different feeding strategies are adopted according to the development stage of the fry, and the choice is made to continue biological bait cultivation or bait conversion operations.

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