Three-dimensional intermediate cultivating and harvesting device for mud flat shellfish

Abstract

The invention relates to a three-dimensional intermediate cultivating and harvesting device for mudflat shellfishes. The device comprises an indoor component and an outdoor component, the indoor component comprises an indoor water inlet pool, a lift pump, a water inlet pipeline, a breeding pipeline, a breeding box body, an indoor tail water treatment pool and a water outlet pipeline; the breeding pipeline is in a long strip shape, the upper end of the breeding pipeline is open, a plurality of breeding box bodies are hung in the length direction, and water filtering holes are formed in a pair of side walls of the breeding box bodies in the direction of the breeding pipeline. The multiple breeding pipelines are distributed on the multi-layer type supporting frame in a three-dimensional array mode. The lift pump lifts water in the indoor water inlet pool to the water inlet end of each breeding pipeline through a water inlet pipeline; the water outlet end of each breeding pipeline downwards flows into the indoor tail water treatment pond through a water outlet pipeline; the bottom of the breeding box body is provided with a breeding substrate and covered with a net bag; the outdoor component comprises a shrimp pond, water treated by the indoor tail water treatment pond is conveyed to the shrimp pond through a first water conveying pump, and the shrimp pond conveys water to the indoor water inlet pond through a second water conveying pump.

Description

Technical Field

[0001] The invention relates to a three-dimensional intermediate cultivation and harvesting device for beach shellfish, which can realize efficient intermediate cultivation and simplified harvesting of beach shellfish and belongs to the technical field of shellfish breeding. Background Art

[0002] Sinonovacula constricta is a type of mudflat shellfish and a key commercial species in my country. The intermediate cultivation of razor clam seedlings is a crucial step in increasing aquaculture yields. Traditionally, intermediate cultivation of razor clam seedlings, including these, has primarily been conducted outdoors on coastal mudflats. This aquaculture environment is highly susceptible to weather fluctuations, making it difficult to achieve efficient razor clam seedling cultivation.

[0003] Traditionally, the harvesting of razor clam fry from mudflats, such as those of the razor clams, relies primarily on manual digging, with a low degree of mechanization. Due to the thin and fragile shells of razor clams, harvesting also presents challenges such as wastage. Harvesting time is also limited by tidal fluctuations, requiring waiting for the ebb tide. Therefore, the use of three-dimensional indoor intermediate culture for mudflat shellfish allows for efficient seed cultivation and improves harvesting efficiency.

[0004] Thus, a Chinese patent document published on August 8, 2023, with publication number CN116548292A, discloses a "system and method for indoor intermediate cultivation of mudflat shellfish using tailwater from aquaculture of Litopenaeus vannamei." This involves a unicellular algae cultivation tank and a vertical multi-layer intermediate cultivation chamber system, but fails to consider the importance of the culture substrate to the growth of mudflat shellfish during cultivation. Similarly, no specific implementation plan is proposed for harvesting methods. Summary of the Invention

[0005] In response to these challenges, this invention provides a three-dimensional indoor intermediate culture device for mudflat shellfish. This device significantly mitigates the environmental constraints that restrict the growth of mudflat shellfish during the intermediate culture process. Another key feature of this invention is its adaptability to simplified harvesting methods, reducing manual harvesting costs and the economic losses caused by environmental factors.

[0006] The present invention adopts the following technical solutions:

[0007] A three-dimensional intermediate cultivation and harvesting device for tidal flat shellfish comprises an indoor component and an outdoor component; the indoor component comprises an indoor water inlet pool 13, a water pump 14, a water inlet pipeline, a breeding pipe 5, a breeding box 1, an indoor tailwater treatment pool 10, and a water outlet pipeline; the breeding pipe 5 is long and open at the upper end, and a plurality of breeding boxes 1 are hung along the length direction, and a pair of side walls of the breeding box along the direction of the breeding pipe are provided with water filter holes 3; a plurality of breeding pipes 5 are distributed in a three-dimensional array on a multi-layer support frame; the water pump lifts the water in the indoor water inlet pool 13 to the water inlet end of each breeding pipe 5 through the water inlet pipeline; the water outlet end of each breeding pipe flows downward into the indoor tailwater treatment pool 10 through the water outlet pipeline; the outdoor component comprises a shrimp pond 12, the indoor tailwater treatment pool 10 transports the treated water to the shrimp pond 12 through a first water pump 16, and the shrimp pond 12 transports the water to the indoor water inlet pool 13 through a second water pump 15.

[0008] Preferably, the breeding box 1 is in the shape of a trapezoid with a larger upper portion and a smaller lower portion; the bottom of the breeding box 1 has a breeding substrate 4 and is covered with a net bag 2; the mesh size of the net bag 2 is optional to meet the harvesting requirements of razor clams of different specifications; each breeding box 1 is provided with a monitoring camera 6.

[0009] Preferably, the breeding pipe 5 is an elongated rectangular structure.

[0010] Preferably, a tailwater treatment device 11 is provided in the indoor tailwater treatment pool 10. The tailwater treatment device 11 includes a physical filtration unit with built-in cotton, a chemical filtration unit with built-in activated carbon, and a biological filtration unit with built-in ceramic rings, a total of three-stage treatment unit modules. The tailwater treatment device 11 is used to treat metabolic waste generated during the intermediate cultivation process of razor clams.

[0011] Preferably, a three-dimensional support 9 is further included, and the three-dimensional support 9 supports the multiple breeding pipes 5 distributed in an array.

[0012] Furthermore, the breeding pipe 5 is made of glass fiber polyester plastic, with a single layer size of 15m×0.3m×0.4m. Every 6 pipes form a breeding unit, and are arranged in multiple layers in three dimensions.

[0013] Furthermore, the front end of the second water delivery pump filters large particles of impurities in the shrimp pond water 12 through a 300-mesh silk screen, and does not hinder the passage of suspended microorganisms in the shrimp pond water.

[0014] A method for three-dimensional intermediate cultivation of razor clams using the above-mentioned indoor three-dimensional intermediate cultivation device for mudflat shellfish comprises the following steps:

[0015] S1: Device construction: Assemble the three-dimensional bracket 9 and the breeding pipe 5, and connect the water inlet 8 and the water outlet 7 of each breeding box 1;

[0016] S2: Construction of water circulation system: Installing a first water delivery pump 16, a second water delivery pump 15, and a water pump 14; Bleaching and disinfecting the indoor components;

[0017] S3: Construction of aquaculture environment: laying aquaculture substrate 4 and a net bag 2 in the aquaculture box 1, and installing a monitoring camera 6; the aquaculture substrate 4 is made of pond mud;

[0018] S4: Transferring Sinonovacula constricta: Evenly distribute the juvenile Sinonovacula constricta in the culture substrate 4;

[0019] S5: Daily maintenance: monitor water quality parameters and replace aquaculture substrate regularly4;

[0020] S6: Harvesting: The finished razor clams are directly collected through the net bag 2 to achieve light and simplified operation.

[0021] Preferably, in step S3, the thickness of the culture substrate 4 is 3-4 cm; in step S5, the culture water height and the state of the razor clams are observed in real time by monitoring the camera 6, and timely intervention is made when abnormalities occur; in step S6, the culture substrate 4 at the bottom is retained for reuse during harvesting.

[0022] The beneficial effects of the present invention are:

[0023] 1) Achieve simplified indoor harvesting of mudflat shellfish (such as Sinon clams), solving the problem of the lack of feasible and easy-to-harvest solutions for indoor Sinon clams cultivation in the prior art;

[0024] 2) Taking into full consideration the demand for aquaculture substrate during the intermediate cultivation of mudflat shellfish (such as razor clams), aquaculture substrate is added to each aquaculture box to simulate the mudflat environment, and a net bag is laid on top to ensure the materials needed for the growth of mudflat shellfish while taking into account the convenience of harvesting;

[0025] 3) The three-dimensional indoor intermediate cultivation increases the cultivation area compared with the traditional mudflat intermediate cultivation.

[0026] 4) Compared with the traditional intermediate cultivation on mudflats, the harvesting time is more selective (not affected by tidal changes), which reduces the impact of environmental factors on the intermediate cultivation of Sinonovacula constricta.

[0027] 5) A model of mixed culture of mudflat shellfish (such as razor clams) and shrimp and crabs is realized. In the traditional culture model, the water quality of shrimp and crab culture ponds is too rich, which affects the culture of shrimp and crabs. This invention uses shrimp pond water as a source of bait in the intermediate culture process, while improving the water quality, forming a comprehensive culture model of "shrimp-crab-razor clam".

[0028] 6) The specific embodiment proposes for the first time a device suitable for simplifying the harvesting and intermediate cultivation of Sinonovacula constricta, and at the same time provides technical ideas for the intermediate cultivation devices of other mudflat shellfish. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the indoor three-dimensional intermediate cultivation device for mudflat shellfish of the present invention.

[0030] In the figure, 1. Breeding box, 2. Net bag, 3. Water filter hole, 4. Breeding substrate, 5. Breeding pipe, 6. Monitoring camera, 7. Water outlet, 8. Water inlet, 9. Three-dimensional bracket, 10. Indoor tailwater treatment pool, 11. Tailwater treatment device, 12. Shrimp pond, 13. Indoor water inlet pool, 14. Water pump, 15. Second water pump, 16. First water pump. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] See also Figure 1 A three-dimensional intermediate cultivation and harvesting device for mudflat shellfish includes an indoor component and an outdoor component; the mudflat shellfish in this embodiment takes razor clams as an example.

[0033] The indoor components include an indoor water inlet pool 13, a water pump 14, a water inlet pipeline, a breeding pipeline 5, a breeding box 1, an indoor tailwater treatment pool 10, and a water outlet pipeline; Figure 1 Among them, except shrimp pond 12, all are indoor components.

[0034] See also Figure 1 On the left side, the aquaculture pipe 5 is long and open at the top. Several aquaculture boxes 1 are hung along the length. Several water filter holes 3 are opened at 1 / 3 of the upper side wall of a pair of side walls along the direction of the aquaculture pipe.

[0035] See also Figure 1 On the right side, multiple breeding pipes 5 are distributed in a three-dimensional array on the multi-layer support frame ( Figure 1 The depth direction is not fully displayed);

[0036] Specifically, each three-dimensional intermediate cultivation device unit is composed of six cultivation pipes 5, which are layered through a three-dimensional support 9.

[0037] The water pump lifts the water in the indoor water inlet pool 13 to the water inlet end of each breeding pipe 5 through the water inlet pipe; the water outlet end of each breeding pipe flows downward into the indoor tailwater treatment pool 10 through the water outlet pipe; the outdoor component includes a shrimp pond 12, and the indoor tailwater treatment pool 10 transports the treated water to the shrimp pond 12 through the first water pump 16, and the shrimp pond 12 transports the water to the indoor water inlet pool 13 through the second water pump 15.

[0038] In this embodiment, see Figure 1 On the lower left side, the breeding box 1 is in the shape of a trapezoid with a larger upper portion and a smaller lower portion; the bottom of the breeding box 1 has a breeding substrate 4 and is covered with a net bag 2; the mesh size of the net bag 2 is optional to meet the harvesting requirements of razor clams of different specifications;

[0039] See also Figure 1 In the upper left part, a single breeding pipe 5 carries several breeding boxes 1. A monitoring camera 6 is set next to each breeding box 5 to monitor the water flow and the condition of the razor clams. A water inlet 8 is hung at the head end of each breeding pipe 5, and a water outlet 7 is set at the end.

[0040] In this embodiment, the breeding pipe 5 is an elongated rectangular structure.

[0041] See also Figure 1 In the lower right part, a tailwater treatment device 11 is provided in the indoor tailwater treatment pool 10. The tailwater treatment device 11 includes physical filtration, chemical filtration and biological filtration.

[0042] Specifically, the tailwater treatment device 11 includes a physical filtration unit with built-in cotton, a chemical filtration unit with built-in activated carbon, and a biological filtration unit with built-in ceramic rings, a total of three treatment unit modules. The tailwater treatment device 11 is used to treat metabolic waste generated during the intermediate cultivation of Sinonovacula constricta. Figure 1 The arrows in the figure show an overflow direction in the three processing unit modules.

[0043] Regarding the selection of filter materials, cotton, activated carbon and ceramic rings are used as filter materials respectively. These are examples of materials, and other materials that are the same or similar can also be used as filter materials here.

[0044] See also Figure 1 , and also includes a three-dimensional bracket 9, which supports multiple breeding pipes 5 distributed in an array.

[0045] In this embodiment, the breeding pipes 5 are made of glass fiber polyester plastic, with a single layer size of 15m×0.3m×0.4m. Every 6 pipes form a breeding unit, and are arranged in multiple layers in a three-dimensional manner.

[0046] In this embodiment, the front end of the second water delivery pump filters large particles of impurities in the shrimp pond water 12 through a 300-mesh silk screen, without hindering the passage of suspended microorganisms in the shrimp pond water. This is not shown in the accompanying drawings.

[0047] Water circulation is achieved among the shrimp pond 12, the indoor water inlet pool 13, the breeding pipeline 5, and the tailwater treatment pool 11 through respective water pumps.

[0048] A method for three-dimensional intermediate cultivation of razor clams using the above-mentioned indoor three-dimensional intermediate cultivation device for mudflat shellfish comprises the following steps:

[0049] S1: Device construction: Assemble the three-dimensional bracket 9 and the breeding pipe 5, and connect the water inlet 8 and the water outlet 7 of each breeding box 1;

[0050] S2: Construction of water circulation system: Installing a first water delivery pump 16, a second water delivery pump 15, and a water pump 14; Bleaching and disinfecting the indoor components;

[0051] S3: Construction of aquaculture environment: laying aquaculture substrate 4 and a net bag 2 in the aquaculture box 1, and installing a monitoring camera 6; the aquaculture substrate 4 is made of pond mud; the thickness of the aquaculture substrate 4 is 3-4 cm;

[0052] S4: Transferring Sinonovacula constricta: Evenly distribute the juvenile Sinonovacula constricta in the culture substrate 4;

[0053] S5: Daily maintenance: monitoring water quality parameters and regularly replacing the culture substrate 4; monitoring the water level and the status of the razor clams in real time through the monitoring camera 6, and timely intervention in case of abnormalities;

[0054] S6: Harvesting: The finished razor clams are directly collected through the net bag 2 to achieve light and simplified operation; when harvesting, the bottom culture substrate 4 is retained for reuse.

[0055] The present invention realizes high-density intermediate cultivation of razor clams through three-dimensional design and modular assembly, effectively solving the problems of traditional mudflat cultivation mode such as large area occupation, low harvesting efficiency, and being affected by extreme weather.

[0056] At the same time, compared with traditional methods, the present invention has the following advantages: 1) Through indoor three-dimensional cultivation, the risk of extreme weather is avoided; 2) The use of a circulating water system can achieve precise control of the water environment; 3) The use of hanging cages, net bags and bottom materials can significantly simplify the harvesting process and reduce labor costs; 4) The modular structure can adapt to various tidal flat shellfish farming needs and has strong promotion potential.

[0057] The above are preferred embodiments of the present application, and those skilled in the art can make various modifications or improvements on the basis of the above description without departing from the general inventive concept, and these modifications or improvements should also belong to the scope of protection of the present application.

Claims

1. A three-dimensional intermediate cultivation and harvesting device for mudflat shellfish, characterized by: Including indoor components and outdoor components; The indoor components include an indoor water inlet pool (13), a water pump (14), a water inlet pipeline, a breeding pipeline (5), a breeding box (1), an indoor tailwater treatment pool (10), and a water outlet pipeline; The breeding pipe (5) is in the shape of a long strip, with an open upper end, and a plurality of breeding boxes (1) are hung along the length direction, wherein a pair of side walls of the breeding boxes along the direction of the breeding pipe are provided with water filter holes (3); the plurality of breeding pipes (5) are distributed in a three-dimensional array on the multi-layer support frame; The water pump lifts the water in the indoor water inlet pool (13) to the water inlet end of each breeding pipe (5) through the water inlet pipeline; The water outlet of each aquaculture pipe flows downward into the indoor tailwater treatment pool (10) through the water outlet pipeline; The bottom of the aquaculture box (1) has a culture substrate (4) and is covered with a net bag (2); the outdoor component includes a shrimp pond (12); the indoor tailwater treatment pool (10) transports treated water to the shrimp pond (12) through a first water pump (16); and the shrimp pond (12) transports water to the indoor water inlet pool (13) through a second water pump (15).

2. The three-dimensional intermediate cultivation and harvesting device for mudflat shellfish according to claim 1, characterized in that: The breeding box (1) is in the shape of a trapezoid with a larger upper portion and a smaller lower portion; the mesh size of the net bag (2) is optional to meet the harvesting requirements of razor clams of different specifications; and each breeding box (1) is provided with a monitoring camera (6).

3. The three-dimensional intermediate cultivation and harvesting device for mudflat shellfish according to claim 1, characterized in that: The breeding pipe (5) is in the form of a long rectangular structure.

4. The three-dimensional intermediate cultivation and harvesting device for mudflat shellfish according to claim 1, characterized in that: The indoor tailwater treatment pool (10) is provided with a tailwater treatment device (11), which comprises a physical filtration unit with built-in cotton, a chemical filtration unit with built-in activated carbon, and a biological filtration unit with built-in ceramic rings, a total of three-stage treatment unit modules. The tailwater treatment device (11) is used to treat metabolic waste generated during the intermediate cultivation process of Sinonovacula constricta.

5. The three-dimensional intermediate cultivation and harvesting device for mudflat shellfish according to claim 1, characterized in that: It also includes a three-dimensional support (9), which supports a plurality of culture pipes (5) distributed in an array.

6. The three-dimensional intermediate cultivation and harvesting device for mudflat shellfish according to claim 5, characterized in that: The breeding pipe (5) is made of glass fiber polyester plastic, with a single layer size of 15m×0.3m×0.4m. Every 6 pipes form a breeding unit, and the multiple layers are arranged in three dimensions.

7. The three-dimensional intermediate cultivation and harvesting device for mudflat shellfish according to claim 5, characterized in that: The front end of the second water delivery pump filters large particles of impurities in the shrimp pond water (12) through a 300-mesh silk screen, and does not hinder the passage of suspended microorganisms in the shrimp pond water.

8. A method for three-dimensional intermediate cultivation of razor clams using the three-dimensional intermediate cultivation and harvesting device for tidal flat shellfish according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Device construction: Assemble the three-dimensional bracket (9) and the breeding pipe (5), and connect the water inlet (8) and the water outlet (7) of each breeding box (1); S2: Construction of a water circulation system: installing a first water delivery pump (16), a second water delivery pump (15), and a water lifting pump (14); bleaching and disinfecting the indoor components; S3: Construction of aquaculture environment: laying aquaculture substrate (4) and a net bag (2) in the aquaculture box (1), and installing a monitoring camera (6); the aquaculture substrate (4) is made of pond mud; S4: Transferring Sinonovacula constricta: Evenly distribute the juvenile Sinonovacula constricta in the culture substrate (4); S5: Daily maintenance: monitoring water quality parameters and regularly replacing aquaculture substrate (4); S6: Harvesting: The finished razor clams are directly collected through the net bag (2), achieving light and simplified operation.

9. A method for three-dimensional intermediate cultivation of razor clams using the three-dimensional intermediate cultivation and harvesting device for tidal flat shellfish according to claim 8, characterized in that: In step S3, the thickness of the culture substrate (4) is 3-4 cm; In step S5, the height of the aquaculture water and the status of the razor clams are observed in real time through the monitoring camera (6), and timely intervention is carried out when abnormalities occur; In step S6, the bottom culture substrate (4) is retained during harvesting for reuse.

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