Stacked duckweed new variety breeding device

Abstract

The invention relates to the technical field of new variety breeding, in particular to a stacked duckweed new variety breeding device which comprises a top end platform, a bottom platform and a plurality of middle platforms, the top end platform, the bottom platform and the middle platforms are built by a framework, breeding grooves are formed in the top end platform and the middle platforms, and a mixing groove is formed in the bottom platform; a water outlet weir is arranged at one end of the breeding tank, liquid in the breeding tank overflows from the water outlet weir when being higher than the water outlet weir, a water outlet located below the water outlet weir is further formed in the end of the breeding tank, and an electromagnetic valve is installed on the water outlet. According to the duckweed breeding device, a stacked and modular design is adopted in structure, a vertical layered framework is adopted, the framework, the breeding grooves and the separation plates are independently arranged, rapid assembly and size expansion are supported, flexibility and convenience are achieved, the occupied space is remarkably reduced, the variety breeding process is facilitated, and the duckweed breeding yield in unit area is greatly increased.

Description

Technical Field

[0001] This invention relates to the field of new variety breeding technology, specifically to a layered duckweed new variety breeding device. Background Technology

[0002] With the rapid development of modern aquaculture, the demand for feed is increasing, while traditional feed resources are becoming increasingly scarce. Therefore, developing new and efficient feed resources has become an urgent task. A new high-protein feed-type duckweed strain (international number 7868) has become a highly anticipated feed resource due to its advantages such as high protein content, rapid reproduction, and low-cost production.

[0003] Different strains of duckweed exhibit significant differences in the content of protein, starch, amino acids, and fatty acids. Technicians can select and breed varieties according to specific goals, and can also select varieties with faster growth rates and higher biomass to improve economic benefits. Currently, duckweed breeding mainly adopts an open-water cultivation model. This traditional planar breeding model suffers from drawbacks such as large land occupation, susceptibility to pollution, difficulty in water quality management, and a lack of precise control methods, resulting in poor growth stability of duckweed.

[0004] A search revealed that Chinese invention patent CN110271650B discloses a duckweed collection and feed preparation device for aquaculture, comprising a floating vessel. A raking and dissolving box and a dehydration box are fixedly installed on the top surface of the floating vessel. A second gathering rod is rotatably mounted on the first gathering rod. A first auxiliary rod is hinged to the left side of the fixed block, and a second auxiliary rod is hinged to the second gathering rod. When the winding motor is started, it drives the winding drum to rotate, which pulls a pull line. The pull line pulls the second and first gathering rods to gather the duckweed towards the center. This device is convenient for use on smaller water surfaces, saving labor costs. A suction pump is used to collect the duckweed, increasing collection efficiency.

[0005] As shown in the aforementioned patent, current duckweed breeding and cultivation methods primarily rely on manual harvesting and conventional impeller harvesting for duckweed collection, resulting in significant low harvesting efficiency. Manual harvesting is labor-intensive, slow, and inefficient; while impeller harvesting suffers from high energy consumption and a high rate of duckweed damage. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a layered duckweed breeding device, which can effectively solve the problems of large space occupation, difficult management and low harvesting efficiency in duckweed breeding in the existing technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A layered duckweed breeding device includes a top platform, a bottom platform, and multiple intermediate platforms constructed from a frame. Culture tanks are placed on the top and intermediate platforms, and a mixing tank is placed on the bottom platform. The culture tanks can be inserted from one end of the frame for easy installation and disassembly. The mixing tank is mainly used to adjust various parameters of the nutrient solution; various probes can be installed inside for monitoring, and it connects to an external main controller. This layered production method significantly reduces space requirements, is flexible and convenient, and increases aquaculture yield.

[0008] The aquaculture tank has a weir at one end. When the liquid level inside the tank exceeds the weir, it overflows. A drain outlet located below the weir is also located at the end of the tank. A solenoid valve is installed on the drain outlet, and the water flowing out enters the next aquaculture tank. Normally, the solenoid valve remains open, and when the nutrient solution in the aquaculture tank exceeds the drain outlet level, it automatically flows to the next platform. Thus, by continuously feeding the nutrient solution from the mixing tank into the aquaculture tanks on the top platform, automatic nutrient solution circulation is achieved within each platform.

[0009] Each of the top platform and one end of each intermediate platform is equipped with a separation plate adapted to the height of the outlet weir. The liquid filtered by the separation plate flows into the next layer, and a collection device is located on one side of the frame below the separation plate. The growth status of the duckweed is analyzed by a visual algorithm. When the duckweed matures, the solenoid valve closes, and nutrient solution is introduced from the mixing tank into the top aquaculture tank. At this time, the nutrient solution cannot flow down from the drain outlet, but continues to rise, causing the duckweed to overflow from the outlet weir. The overflowing duckweed flows down from the separation plate and falls onto the collection device, achieving automatic harvesting.

[0010] The aforementioned micro-powered retrieval and stacked duckweed aquaculture equipment also includes a self-circulation mechanism. The self-circulation mechanism includes a water pump placed inside the mixing tank. The output end of the water pump is connected to a lift pipe extending to the top platform. Each aquaculture tank is equipped with a temperature sensor and a pH sensor. Cameras are installed on the top platform and each intermediate platform.

[0011] In the aforementioned micro-powered retrieval layered duckweed aquaculture equipment, the top platform and the end of each intermediate platform are provided with a water receiving box located below the separation plate. The bottom end of the water receiving box is connected to a pusher pipe, which extends to the end of the next layer of aquaculture tank away from the outlet weir.

[0012] In the aforementioned micro-powered retrieval layered duckweed aquaculture equipment, the end of the push pipe away from the water receiving box has a T-shaped structure, and the push pipe discharges the upper layer water flow from both sides into the lower layer aquaculture tank.

[0013] In the aforementioned micro-powered retrieval and stacked duckweed aquaculture equipment, each of the intermediate platforms is equipped with a supplementary light at its top.

[0014] In the aforementioned micro-powered retrieval and stacked duckweed aquaculture equipment, the camera is installed on the frame at the same end as the separation plate, and the height of each intermediate platform is at least 8cm greater than the height of the aquaculture trough.

[0015] In the aforementioned micro-powered dredging and stacking duckweed aquaculture equipment, the camera uses a visual algorithm to identify the current duckweed density in the aquaculture tank, and controls the on / off status of the water pump and solenoid valve through the main controller.

[0016] In the aforementioned micro-powered retrieval and stacked duckweed aquaculture equipment, the top of the separation plate is hinged to the frame, and a vibration plate corresponding to the position of the separation plate is installed on the frame.

[0017] In the aforementioned micro-powered retrieval and stacked duckweed aquaculture equipment, the vibrating plate is installed below the separation plate in a lever manner. A water collection trough located at the bottom of the filter screen is installed on the lower surface of the separation plate. One end of the vibrating plate is located directly below the water collection trough, and the other end of the vibrating plate is in contact with the lower surface of the separation plate.

[0018] In the aforementioned micro-powered retrieval and stacked duckweed aquaculture equipment, the end of the vibrating plate that contacts the separating plate is provided with a ball head, and the end of the vibrating plate away from the ball head is provided with an impact strip.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a layered and modular design in terms of structure, with a vertical layered architecture. The skeleton, breeding tank and separation plate are set independently, which supports rapid assembly and size expansion. It is flexible and convenient, significantly reduces the space occupied, facilitates the breeding process, and greatly increases the yield of duckweed per unit area.

[0020] 2. It adopts a gravity-flow duckweed collection and intelligent harvesting method, using the water level difference between layers to guide the duckweed to the separation plate, reducing pump energy consumption, which is significantly lower than traditional equipment. It is also equipped with water temperature and pH sensors, and uses computer vision algorithms to identify duckweed density and trigger automatic harvesting, reducing labor costs.

[0021] 3. A vibrating plate is installed below the separation plate. When water flows down from the filter screen, it flows through the water collection tank onto the vibrating plate, causing the vibrating plate to continuously generate fine vibrations that are applied to the separation plate. The vibrating separation plate can promote the duckweed to fall quickly, preventing the duckweed from adhering to the surface of the separation plate and improving the separation effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a top view of the overall structure of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a bottom view of the overall structure of the present invention; Figure 5 This is a schematic diagram of the end structure of the aquaculture tank of the present invention; Figure 6 This is a schematic diagram of a portion of the structure of the present invention; Figure 7 for Figure 6 Another perspective on the partial structure shown; Figure 8 This is an enlarged view of the structure at point A of the present invention.

[0024] The labels in the diagram represent: 1. Skeleton; 2. Top platform; 3. Middle platform; 4. Bottom platform; 5. Aquaculture tank; 501. Outlet weir; 502. Drain outlet; 503. Solenoid valve; 6. Mixing tank; 7. Lifting pipe; 8. Water pump; 9. Separation plate; 901. Filter screen; 902. Water collection tank; 10. Collection device; 11. Supplemental light; 12. Water receiving box; 13. Push pipe; 14. Camera; 15. Vibrating plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] The present invention will be further described below with reference to embodiments.

[0027] Example 1 Reference Figures 1-8A layered duckweed breeding device includes a top platform 2, a bottom platform 4, and multiple intermediate platforms 3, all constructed from a frame 1. The frame 1 can be constructed from hollow tubes, and its size and shape can be flexibly adjusted. Culture tanks 5 are placed on both the top platform 2 and the intermediate platforms 3. As shown in this invention, the culture tanks 5 can be inserted from one end of the frame 1 for easy installation and disassembly. A mixing tank 6 is placed on the bottom platform 4. The mixing tank 6 is mainly used to adjust various parameters of the nutrient solution. Various probes can be installed inside for detection and it connects to an external main controller. This layered breeding and cultivation method significantly reduces the space required, is flexible and convenient, and allows duckweed breeding and cultivation to be carried out in laboratories or at home. It is very user-friendly for beginners, enthusiasts, and small-scale enterprises, and greatly increases the duckweed yield per unit area.

[0028] The aquaculture tank 5 has a weir 501 at one end. When the liquid level inside the aquaculture tank 5 is higher than the weir 501, it overflows from the weir 501. The aquaculture tank 5 also has a drain outlet 502 located below the weir 501 at its end. A solenoid valve 503 is installed on the drain outlet 502, and the water flowing out of the drain outlet 502 enters the next aquaculture tank 5. Under normal circumstances, the solenoid valve 503 remains open. When the nutrient solution in the aquaculture tank 5 is higher than the drain outlet 502, it automatically flows to the next platform. Thus, by continuously feeding the nutrient solution from the mixing tank 6 into the aquaculture tanks 5 on the top platform 2, automatic circulation of the nutrient solution within each platform can be achieved. Therefore, this invention also includes a self-circulation mechanism to achieve this purpose.

[0029] Reference Figure 1 The self-circulating mechanism of the present invention includes a water pump 8 placed inside the mixing tank 6. The output end of the water pump 8 is connected to a lifting pipe 7 extending above the top platform 2. A temperature sensor and a pH sensor are placed in each aquaculture tank 5. A camera 14 is installed on the top platform 2 and each intermediate platform 3. The camera 14 is used for image acquisition and visual algorithm analysis of duckweed growth.

[0030] In this invention, each aquaculture tank 5 is equipped with a temperature sensor and a pH sensor, and cameras 14 are also installed on the top platform 2 and the middle platform 3 corresponding to the aquaculture tank 5. During the aquaculture process, the temperature sensor and pH sensor continuously monitor the parameters of the nutrient solution in each aquaculture tank 5 and transmit the data to the main controller (which can use a microcontroller or computer to realize signal transmission and control functions). If the nutrient solution parameters are abnormal, the main controller controls the water pump 8 to work, so that the nutrient solution in each platform begins to circulate. The operator only needs to adjust the nutrient solution parameters in the mixing tank 6 to complete the adjustment of the nutrient solution in all platforms, which is efficient and convenient.

[0031] Each of the top platform 2 and each intermediate platform 3 is equipped with a separation plate 9 at one end, adapted to the height of the effluent weir 501. The liquid filtered by the separation plate 9 flows into the next layer. A collection device 10 is located on one side of the frame 1, below the separation plate 9. The collection device 10 can use a conveyor belt to automatically transport mature duckweed to the next production area. The collected duckweed is subjected to component testing, and varieties that better meet the target are selected for the next cultivation until a duckweed variety that meets the standards is cultivated.

[0032] In this invention, the camera 14 uses a visual algorithm to identify the density of duckweed in the current aquaculture tank 5, and controls the on / off state of the water pump 8 and the solenoid valve 503 through the main controller.

[0033] Camera 14 periodically captures photos of the duckweed on the current platform and analyzes its growth using visual algorithms (generally, the duckweed in each cultivation tank 5 has a similar maturation cycle). When the duckweed matures, the main controller closes all solenoid valves 503 and turns on water pump 8 to input nutrient solution into the top cultivation tank 5. At this time, the nutrient solution cannot flow down from the drain outlet 502 but continues to rise, causing the duckweed to overflow from the outlet weir 501. The overflowing duckweed flows down from the separation plate 9 and falls onto the collection device 10. As the duckweed passes through the separation plate 9, the nutrient solution is filtered out and flows to the next platform, preventing waste. It should be noted that each harvest of duckweed is approximately 50% of the total. Technicians can control the amount of duckweed overflow by controlling the closing time of the solenoid valves 503, leaving an appropriate amount of duckweed in the cultivation tank 5 for continued breeding and production.

[0034] The visual algorithm in this invention uses a combination of YOLO V8 and DeepSORT to monitor the distribution and spread area of ​​duckweed in real time. Collection can begin when the duckweed in the aquaculture tank 5 is almost completely covered. If the collected images have low contrast, preprocessing techniques can be used to enhance the contrast and reduce light interference. The above-mentioned visual algorithm technology is already very mature and widely used, and can be easily obtained and used by those skilled in the art; therefore, it will not be elaborated upon in this invention.

[0035] Reference Figure 4 Based on the above design, the top platform 2 and each intermediate platform 3 are equipped with a water receiving box 12 located below the separation plate 9 at their ends. The bottom of the water receiving box 12 is connected to a push-flow pipe 13, which extends to the end of the next layer of aquaculture tank 5 furthest from the outlet weir 501. The nutrient solution filtered through the separation plate 9 falls into the water receiving box 12, and then flows through the push-flow pipe 13 to the left end of the next layer of aquaculture tank 5 (where...). Figure 1 (Based on this), in the next layer of the aquaculture tank 5, the nutrient solution flows from left to right, flowing through the entire current aquaculture tank 5, so that the nutrients in the nutrient solution are evenly distributed, and the growth of duckweed is more uniform.

[0036] Furthermore, referring to Figure 1 The end of the push pipe 13 furthest from the water receiving box 12 is T-shaped, and the push pipe 13 discharges the upper water flow from both sides into the lower aquaculture tank 5. Since the aquaculture tank 5 has a certain width, setting the end of the push pipe 13 to a T-shape can further improve the uniformity of nutrient distribution in the aquaculture tank 5, and the nutrient solution flowing down from the push pipe 13 can be quickly mixed into the aquaculture tank 5 from both sides.

[0037] Reference Figure 2 Each intermediate platform 3 is equipped with a supplemental light 11 at its top. Except for the top platform 2, which receives ample sunlight, the aquaculture tanks 5 on each intermediate platform 3 are partially shaded. Therefore, supplemental lights 11 are installed at the top of each intermediate platform 3 to adjust the light intensity as needed to control the growth of the duckweed. The supplemental lights 11 are mounted on the frame 1.

[0038] Reference Figure 2 and Figure 4 The camera 14 is mounted on the frame 1 at the same end as the separation plate 9, which can prevent the push pipe 13 from entering the acquisition area, reduce interference factors in the image, and the height of each intermediate platform 3 is at least 8cm greater than the height of the aquaculture tank 5, which can leave more space above the aquaculture tank 5, allowing the duckweed to be illuminated by more natural light, reducing the need for the supplementary light 11, and further increasing the photo acquisition space, increasing the shooting angle of the camera 14, making the photos clearer, and ensuring the accuracy of the visual algorithm.

[0039] Reference Figures 6-8 The top of the separation plate 9 is hinged to the frame 1, and a vibration plate 15 corresponding to the position of the separation plate 9 is installed on the frame 1.

[0040] The vibrating plate 15 is mounted below the separating plate 9 using a lever mechanism. A water collection trough 902, located at the bottom of the filter screen 901, is mounted on the lower surface of the separating plate 9. One end of the vibrating plate 15 is directly below the water collection trough 902, and the other end of the vibrating plate 15 is in contact with the lower surface of the separating plate 9. In its natural state, the lower surface of the separating plate 9 rests on the right end of the vibrating plate 15 (with...). Figure 8(As shown in the image) Since the duckweed flows down via overflow, the water flow speed is not high. When the nutrient solution carries the duckweed down, a large portion of the nutrient solution filtered by the filter screen 901 gathers along the filter screen 901 onto the water collection tank 902 (the surface tension of water gives it a certain degree of adsorption; when the water flow speed is low, the water will adsorb the filter screen 901 as it falls). Subsequently, the nutrient solution falling from the water collection tank 902 will slap onto the vibrating plate 15, and the resulting vibration will be transmitted back to the separation plate 9 through the other end of the vibrating plate 15. This improves the filtration effect, allows the duckweed to fall quickly, and prevents the duckweed from adhering to the separation plate 9, which is ingenious and practical. Since the vibrating plate 15 is installed in a lever manner, the vibration force and amplitude can be adjusted by adjusting the fulcrum position of the vibrating plate 15 to ensure the vibration effect.

[0041] Reference Figure 8 The vibrating plate 15 is provided with a ball head at the end that contacts the separating plate 9. The ball head is used to release the contact area from the separating plate 9, thereby reducing friction and ensuring the vibration transmission effect while reducing interference to the separating plate 9. The vibrating plate 15 is provided with an impact strip at the end away from the ball head. The impact strip is used to receive the impact of the falling nutrient solution, which can enhance the generated vibration and has a better vibration effect than the vibration generated by directly impacting the plane.

[0042] Working principle: After the skeleton 1 is assembled, each breeding tank 5 and mixing tank 6 are pushed in from the left end of the skeleton 1 in sequence. Each sensor and detection probe is set up. Then, nutrient solution is poured into the mixing tank 6 and the water pump 8 and solenoid valve 503 are turned on. The water pump 8 delivers the nutrient solution to the breeding tank 5 at the top. Then, the nutrient solution flows into each breeding tank 5 in sequence and eventually tends to reach equilibrium. Duckweed is sown and allowed to mature. Camera 14 takes photos periodically, and visual algorithms analyze the duckweed's growth. When the main controller determines that the duckweed is mature (basically completely covering the cultivation tank 5), the solenoid valve 503 closes, and the nutrient solution stops flowing from the drain outlet 502. The nutrient solution in the cultivation tank 5 continues to rise until it reaches the height of the outlet weir 501. At this point, the nutrient solution, carrying the duckweed, flows down from the separation plate 9. After being filtered by the separation plate 9, the nutrient solution falls onto the water collection box 12 and flows into the next cultivation tank 5. The duckweed falls onto the collection device 10, waiting to be collected by staff. This achieves automatic duckweed harvesting, reducing labor costs and improving production efficiency. The collected duckweed undergoes component analysis, examining its protein, starch, amino acid, and fatty acid content, and varieties that better meet the target are selected for the next breeding cycle.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A layered duckweed breeding device, characterized in that, It includes a top platform (2), a bottom platform (4) and multiple intermediate platforms (3) constructed from a skeleton (1). Aquaculture tanks (5) are placed on the top platform (2) and the intermediate platforms (3), and a mixing tank (6) is placed on the bottom platform (4). The aquaculture tank (5) is provided with a water outlet weir (501) at one end. When the liquid inside the aquaculture tank (5) is higher than the water outlet weir (501), it overflows from the water outlet weir (501). The aquaculture tank (5) is also provided with a drain outlet (502) located below the water outlet weir (501) at the end. A solenoid valve (503) is installed on the drain outlet (502). The water flowing out of the drain outlet (502) enters the next layer of aquaculture tank (5). The top platform (2) and each intermediate platform (3) are equipped with a separation plate (9) at one end that is adapted to the height of the outlet weir (501). The liquid filtered by the separation plate (9) flows into the next layer. A collection device (10) is provided on one side of the skeleton (1) below the separation plate (9).

2. The layered duckweed new variety breeding device according to claim 1, characterized in that, It also includes a self-circulating mechanism, which includes a water pump (8) placed inside the mixing tank (6), the output end of which is connected to a lift pipe (7) extending to the top platform (2), a temperature sensor and a pH sensor are placed in each of the breeding tanks (5), and a camera (14) is installed on the top platform (2) and each intermediate platform (3).

3. The layered duckweed new variety breeding device according to claim 2, characterized in that, The top platform (2) and each intermediate platform (3) are provided with a water receiving box (12) located below the separation plate (9) at their ends. The bottom end of the water receiving box (12) is connected to a push pipe (13), which extends to the end of the next layer of aquaculture tank (5) away from the outlet weir (501).

4. The layered duckweed new variety breeding device according to claim 3, characterized in that, The end of the push pipe (13) away from the water receiving box (12) has a T-shaped structure, and the push pipe (13) discharges the upper water flow from both sides into the lower breeding tank (5).

5. The layered duckweed new variety breeding device according to claim 1, characterized in that, Each of the intermediate platforms (3) is equipped with a supplementary light (11) at its top.

6. The layered duckweed new variety breeding device according to claim 2, characterized in that, The camera (14) is mounted on the frame (1) at the same end as the separation plate (9), and the height of each intermediate platform (3) is at least 8 cm greater than the height of the aquaculture tank (5).

7. The layered duckweed new variety breeding device according to claim 6, characterized in that, The camera (14) uses a visual algorithm to identify the density of duckweed in the current aquaculture tank (5) and controls the on / off state of the water pump (8) and solenoid valve (503) through the main controller.

8. The layered duckweed new variety breeding device according to claim 1, characterized in that, The top of the separation plate (9) is hinged to the frame (1), and a vibration plate (15) corresponding to the position of the separation plate (9) is installed on the frame (1).

9. A layered duckweed new variety breeding device according to claim 8, characterized in that, The vibrating plate (15) is mounted below the separating plate (9) in a lever manner. A water collection tank (902) located at the bottom of the filter screen (901) is installed on the lower surface of the separating plate (9). One end of the vibrating plate (15) is located directly below the water collection tank (902), and the other end of the vibrating plate (15) is in contact with the lower surface of the separating plate (9).

10. A layered duckweed new variety breeding device according to claim 9, characterized in that, The vibrating plate (15) is provided with a ball head at one end that contacts the separating plate (9), and an impact strip is provided at the other end of the vibrating plate (15) away from the ball head.

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