A biomimetic recirculating aquatic spawning pond based on the ecological habits of the Chinese gudgeon

Abstract

This utility model relates to the field of aquaculture facilities technology and discloses a biomimetic recirculating aquatic spawning pond based on the ecological habits of the Chinese gudgeon. The device uses a variable frequency water pump and stainless steel pipes to deliver external water through flexible hoses to a ring-shaped water distribution pipe and spray it out, forming a spiral flow field. Simultaneously, through a control cabinet and preset output power, the variable frequency water pump generates intermittent pulsed water flow, simulating the rise and fall of a natural river, triggering the spawning reflex of the parent fish. The water then circulates through a drain outlet, drain pipe, and filter. This water flow pattern not only provides a suspension environment for the fish eggs but also evenly distributes the eggs to the surface of the substrate layer, improving the hatching success rate.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture facilities technology, and in particular to a biomimetic recirculating aquatic spawning pond based on the ecological habits of the Chinese gudgeon. Background Technology

[0002] The Chinese gudgeon, belonging to the order Cypriniformes, suborder Cypriniformes, family Cyprinidae, subfamily Gudgeoninae, and genus Gudgeon, is a common fish in rivers and lakes. It generally lives in the middle and lower layers of water, and is more commonly found in the sections of mountain streams and tributaries, and in flowing water.

[0003] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: existing artificial breeding of Chinese gudgeon mostly uses cement ponds or net cages, with a single bottom substrate and a lack of gravel-sand layered structure, which leads to the inhibition of spawning behavior of parent fish; the lack of water flow stimulation from natural streams results in low hatching rates; open water systems consume a lot of water and lack a circulation and purification mechanism, leading to unstable water quality; and the inaccurate light control affects the synchronicity of gonadal maturation. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage of inhibiting the spawning behavior of parent fish in artificial breeding of Chinese gudgeon. To this end, we propose an ecological spawning pond that simulates the natural breeding habitat of Chinese gudgeon.

[0005] To achieve the above objectives, this application adopts the following technical solution: a biomimetic recirculating aquatic spawning pond based on the ecological habits of the Chinese gudgeon, comprising: a foundation pit dug inside the ground, and a pond body set inside the foundation pit, with a control cabinet installed on the upper surface of the ground, and simulation components for simulating the ecological environment of the Chinese gudgeon installed inside the pond body. The simulation components include a substrate layer inside the tank and a support frame above the tank. One side of the support frame is fixed to the inner wall of the pit. An annular water distribution pipe is installed inside the support frame, with one end connected to the outlet of a variable frequency water pump via a flexible hose. The inlet of the variable frequency water pump is connected to an external water source via a stainless steel pipe. A drain outlet is located at the bottom of the tank, connected to a drain pipe with a filter inside. The outlet of the drain pipe is connected to the inlet of the variable frequency water pump, and a check valve is installed on the connecting pipe between the drain pipe and the inlet. LED aquaculture lights are installed above the tank. A PLC controller is installed inside the control cabinet, electrically connected to the variable frequency water pump and the LED aquaculture lights. The substrate layer consists of a fine sand layer, a pebble layer, and a gravel layer laid sequentially from bottom to top. Preferably, the gravel layer has a particle size of 5-10 mm, the pebble layer has a particle size of 20-30 mm, the fine sand layer has a particle size of 0.5-1 mm, and the total thickness of the matrix layer is 15-20 cm.

[0006] Preferably, diatomaceous earth and hollow ceramic rings are also mixed into the interior of the matrix layer.

[0007] Preferably, the pool body is a component made of fiberglass, and the pool body has an elliptical ring geometric configuration. The inner surface of the pool body is sandblasted to form a texture with a roughness close to that of natural rock.

[0008] Preferably, the outer surface of the annular water distribution pipe is evenly distributed with adjustable nozzles, and the adjustable nozzles are inclined at an angle of 30°±5° to the inner wall of the pool.

[0009] Preferably, the filter includes a multi-layer filter screen disposed on the inner wall of the drain pipe, and a biological purification layer disposed below the multi-layer filter screen, the biological purification layer being a component made of nitrifying bacteria attached to porous volcanic rock.

[0010] Preferably, a disinfection box is installed on the upper surface of the ground, a drain pipe runs through the inside of the disinfection box, and an ultraviolet germicidal lamp is installed on the top wall inside the disinfection box.

[0011] Preferably, a digital dissolved oxygen, pH, and temperature sensor is installed on the inner wall of the tank, and the digital dissolved oxygen, pH, and temperature sensor is connected to the control cabinet for signal transmission. The technical effects and advantages of this utility model are as follows: In this invention, the device uses a variable frequency water pump and stainless steel pipe to deliver external water source through a flexible hose to a ring-shaped water distribution pipe and spray it out, forming a spiral flow field. At the same time, through the control cabinet and preset output power, the variable frequency water pump realizes intermittent pulse water flow, thereby simulating the rise and fall of natural rivers, triggering the spawning reflex of parent fish, and then circulating the water through the drain outlet, drain pipe and filter. This water flow mode not only provides a suspension environment for fish eggs, but also distributes the eggs evenly on the surface of the substrate layer, improving the hatching success rate. Attached Figure Description

[0012] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural breakdown diagram of the present invention; Figure 3 This is a schematic diagram of the pool structure of this utility model; Figure 4 This is a cross-sectional view of the matrix layer structure of this utility model; Figure 5 This is a cross-sectional view of the filter structure of this utility model.

[0013] Legend: 1. Ground; 11. Foundation pit; 2. Pool body; 3. Control cabinet; 4. Simulation components; 41. Support frame; 42. Annular water distribution pipe; 421. Adjustable nozzle; 43. Hose; 44. Variable frequency water pump; 45. Drain outlet; 46. Drain pipe; 47. Filter; 471. Multi-layer filter screen; 472. Biological purification layer; 48. LED aquaculture light; 49. Substrate layer; 491. Fine sand layer; 492. Pebble layer; 493. Gravel layer; 5. Disinfection box; 51. Ultraviolet germicidal lamp; 6. Digital dissolved oxygen, pH, and temperature sensor. Detailed Implementation

[0014] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0015] Reference Figure 1 As shown, this utility model provides a technical solution: a biomimetic recirculating aquatic spawning pond based on the ecological habits of the Chinese gudgeon, comprising: a foundation pit 11 opened inside the ground 1, and a pool body 2 set inside the foundation pit 11. A control cabinet 3 is set on the upper surface of the ground 1, and a simulation component 4 for simulating the ecological environment of the Chinese gudgeon is set inside the pool body 2.

[0016] Reference Figures 1-5As shown in this embodiment: the simulation component 4 includes a substrate layer 49 disposed inside the pool body 2, and a support frame 41 disposed above the pool body 2. One side of the support frame 41 is fixed to the inner wall of the pit 11. An annular water distribution pipe 42 is disposed inside the support frame 41. One end of the annular water distribution pipe 42 is connected to the outlet of the variable frequency water pump 44 through a hose 43. The inlet of the variable frequency water pump 44 is connected to an external water source through a stainless steel pipe. A drain outlet 45 is opened at the bottom of the pool body 2. The bottom of the drain outlet 45 is connected to a drain pipe 46. A filter 47 is disposed inside the drain pipe 46. The outlet of the drain pipe 46 is connected to the inlet of the variable frequency water pump 44. A check valve is disposed on the connecting pipe between the drain pipe 46 and the inlet of the variable frequency water pump 44. An LED aquaculture light 48 is disposed above the pool body 2. A PLC control is disposed inside the control cabinet 3. The device and PLC controller are electrically connected to the variable frequency water pump 44 and LED aquaculture lights 48 respectively. The substrate layer 49 includes a fine sand layer 491, a pebble layer 492 and a gravel layer 493 laid from bottom to top. The external water source is transported to the annular water distribution pipe 42 through the variable frequency water pump 44 and stainless steel pipe via the hose 43 and sprayed out to form a spiral flow field. At the same time, through the control cabinet 3 and the preset output power, the variable frequency water pump 44 realizes an intermittent pulse water flow with a flow rate of 0.1-0.3m / s, and outputs a 10-minute pulse water flow every 2 hours, with a peak flow rate of 0.3m / s, thereby simulating the rise and fall of natural rivers, triggering the spawning reflex of parent fish, and then circulating the water through the drain outlet 45, drain pipe 46 and filter 47. This water flow mode not only provides a suspension environment for fish eggs, but also distributes the eggs evenly on the surface of the substrate layer 49, improving the hatching success rate.

[0017] The gravel layer 493 has a particle size of 5-10 mm, the pebble layer 492 has a particle size of 20-30 mm, the fine sand layer 491 has a particle size of 0.5-1 mm, and the total thickness of the matrix layer 49 is 15-20 cm. The gravel-pebble-fine sand layered structure simulates the natural spawning ground, meets the requirements of Chinese gudgeon for substrate particle size and stability during spawning, and promotes oocyte attachment and development.

[0018] The matrix layer 49 also contains diatomaceous earth and hollow ceramic rings. The diatomaceous earth accounts for 5%-10% and has a porous structure, which can adsorb impurities such as heavy metals and organic matter in the water, while providing a habitat for beneficial microorganisms. The hollow ceramic rings are 1cm in diameter and account for 20%, thereby further expanding the attachment area for microorganisms.

[0019] Pool 2 is a component made of fiberglass. Pool 2 has an elliptical ring geometry. The inner surface of pool 2 is sandblasted to form a texture with a roughness close to that of natural rock. Fiberglass has high strength and corrosion resistance. The elliptical ring structure can guide the water flow to form a ring flow, simulating the flow of natural river water. In addition, the roughness of its inner surface can provide a habitat and spawning attachment interface for Chinese gudgeon.

[0020] Adjustable nozzles 421 are evenly distributed on the outer surface of the annular water distribution pipe 42. The adjustable nozzles 421 are inclined at an angle of 30°±5° to the inner wall of the pool body 2, so that the direction of the sprayed water flow is at an angle of 30° to the pool wall. This can avoid direct impact of water flow and form a spiral flow field to simulate the flow direction of a natural river.

[0021] The filter 47 includes a multi-layer filter screen 471 disposed on the inner wall of the drain pipe 46, and a biological purification layer 472 disposed below the multi-layer filter screen 471. The biological purification layer 472 is a component made of nitrifying bacteria attached to porous volcanic rock. The multi-layer filter screen 471 is used to remove suspended particles, while nitrifying bacteria are used to degrade ammonia nitrogen and nitrite.

[0022] A disinfection box 5 is installed on the upper surface of the ground 1. A drain pipe 46 runs through the interior of the disinfection box 5. An ultraviolet germicidal lamp 51 is installed on the top wall inside the disinfection box 5. The ultraviolet germicidal lamp 51 uses an ultraviolet lamp with a wavelength of 254nm (dose 30mJ / cm²) to kill pathogens.

[0023] A digital dissolved oxygen, pH, and temperature sensor 6 is installed on the inner wall of the tank body 2. The digital dissolved oxygen, pH, and temperature sensor 6 is connected to the control cabinet 3. The digital dissolved oxygen, pH, and temperature sensor 6 can refer to the ZWIN-AC1008-DPT digital dissolved oxygen, pH, and temperature sensor, and transmits the data to the control cabinet 3 for easy monitoring of water quality.

[0024] Working Principle: A semi-buried structure is formed by creating a foundation pit 11 in the ground 1 and placing the pool body 2, thereby reducing external interference. Since the pool body 2 is made of fiberglass, it has an elliptical ring geometry. The inner surface of the pool body 2 is sandblasted to create a texture similar to natural rock, thus giving it high strength and corrosion resistance. The elliptical ring shape guides the water flow into a circular flow, simulating the flow of a natural river. Furthermore, the roughness of its inner surface provides a suitable attachment interface for the Chinese gudgeon to inhabit and lay eggs. External water is then pumped through a variable frequency pump 44 and a stainless steel pipe via a flexible hose 43 to the annular water distribution pipe 42, and sprayed out by adjustable nozzles 421 that are inclined at a 30°±5° angle to the inner wall of the pool body 2, forming a spiral flow field. Simultaneously, the control cabinet 3 and preset output power... The system achieves intermittent pulsed water flow with a flow rate of 0.1-0.3 m / s from the variable frequency water pump 44, and outputs a 10-minute pulsed water flow every 2 hours, with a peak flow rate of 0.3 m / s, thereby simulating the rise and fall of a natural river and triggering the spawning reflex of parent fish. The water then circulates through the drain outlet 45, drain pipe 46, and filter 47. The multi-layer filter screen 471 inside the filter 47 is used to remove suspended particles. At the same time, the biological purification layer 472 made of nitrifying bacteria attached to porous volcanic rock below the multi-layer filter screen 471 is used to degrade ammonia nitrogen and nitrite. In addition, the ultraviolet germicidal lamp 51 kills pathogens, and the water quality is monitored by the digital dissolved oxygen, pH and temperature sensor 6. The water quality thresholds are dissolved oxygen (>6 mg / L), water temperature (18-22℃) and pH (6.8-7.5). This water flow pattern not only provides a suspension environment for fish eggs but also distributes them evenly on the surface of the matrix layer 49, improving the hatching success rate. Furthermore, the matrix layer 49 includes, from bottom to top, a fine sand layer 491 that simulates the substrate environment during spawning, a pebble layer 492 that simulates the alternating microhabitat of "shoal-slow flow" in natural river channels, and a gravel layer 493 that more accurately simulates the periodic changes of "rapid flow-slow flow" in natural streams. This meets the requirements of the Chinese gudgeon for substrate particle size and stability during spawning, promoting oocyte attachment and development. At the same time, since the matrix layer 49 also contains 5%-10% diatomaceous earth and 20% hollow ceramic rings with a diameter of 1 cm, it has a porous structure that can adsorb impurities such as heavy metals and organic matter in the water, while providing a habitat for beneficial microorganisms and further expanding the microbial attachment area.

[0025] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A bionic circulating egg pool based on the ecological habits of Parabotia vittata, characterized in that: It includes a foundation pit dug into the ground and a pool set inside the foundation pit. A control cabinet is installed on the upper surface of the ground, and a simulation component for simulating the ecological environment of the Chinese gudgeon is installed inside the pool. The simulation components include a substrate layer inside the pool and a support frame above the pool. One side of the support frame is fixed to the inner wall of the pit. An annular water distribution pipe is installed inside the support frame. One end of the annular water distribution pipe is connected to the outlet of a variable frequency water pump via a flexible hose. The inlet of the variable frequency water pump is connected to an external water source via a stainless steel pipe. A drain outlet is provided at the bottom of the pool, and a drain pipe is connected to the bottom of the drain outlet. A filter is installed inside the drain pipe, and the outlet of the drain pipe is connected to the inlet of the variable frequency water pump. A check valve is installed on the connecting pipe between the drain pipe and the inlet of the variable frequency water pump. LED aquaculture lights are installed above the pool. A PLC controller is installed inside the control cabinet. The PLC controller is electrically connected to the variable frequency water pump and the LED aquaculture lights. The substrate layer includes a fine sand layer, a pebble layer, and a gravel layer laid from bottom to top.

2. The bionic circulating egg pool based on the ecological habit of Parabotia javanica according to claim 1, characterized in that: The gravel layer has a particle size of 5-10 mm, the pebble layer has a particle size of 20-30 mm, the fine sand layer has a particle size of 0.5-1 mm, and the total thickness of the matrix layer is 15-20 cm.

3. The bionic circulating egg pool based on the ecological habit of Parabotia javanica according to claim 1, characterized in that: The matrix layer also contains diatomaceous earth and hollow ceramic rings.

4. The bionic circulating egg pool based on the ecological habit of Parabotia javanica according to claim 1, characterized in that: The pool body is a component made of fiberglass, and the pool body has an elliptical ring geometric configuration. The inner surface of the pool body is sandblasted to form a texture with a roughness close to that of natural rock.

5. The bionic circulating egg pool based on the ecological habit of Parabotia javanica according to claim 1, characterized in that: The outer surface of the annular water distribution pipe is evenly distributed with adjustable nozzles, which are inclined at an angle of 30°±5° to the inner wall of the pool.

6. The bionic circulating egg pool based on the ecological habit of Parabotia javanica according to claim 1, characterized in that: The filter includes a multi-layered filter screen disposed on the inner wall of the drain pipe, and a biological purification layer disposed below the multi-layered filter screen. The biological purification layer is a component made of nitrifying bacteria attached to porous volcanic rock.

7. The biomimetic recirculating aquatic spawning pond based on the ecological habits of the Chinese gudgeon as described in claim 1, characterized in that: A disinfection box is installed on the upper surface of the ground, and a drain pipe runs through the inside of the disinfection box. An ultraviolet germicidal lamp is installed on the top wall inside the disinfection box.

8. The bionic circulating egg pool based on the ecological habit of Parabotia javanica according to claim 1, characterized in that: The inner wall of the pool is equipped with a digital dissolved oxygen pH temperature sensor, which is connected to the control cabinet via signal transmission.

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