A portable rapid eutrophication detection instrument

Abstract

This utility model discloses a portable rapid eutrophication detector, including a detection box. A detection port is opened on the top surface of the detection box, and a movable platform is fitted into the detection port. A detection probe is installed on the bottom surface of the movable platform. Movable discs are installed inside the detection box, and a base plate is fixed between two movable discs. A sample container and a calibration container are respectively fixed on the top surface of the base plate. A cleaning hole penetrates through the center of the base plate, and the detection probe is movably connected to the cleaning hole. A storage cavity is opened at the bottom of the base plate. A cleaning box is fixed to the bottom surface inside the detection box, and a spray head is arrayed on the top surface of the cleaning box. A display panel is installed on the front of the movable platform. The automatic detection method achieves efficient and accurate detection, greatly improving the efficiency and reliability of eutrophication monitoring. After detection, the container is automatically rotated 180 degrees to automatically discharge waste liquid, while the high-pressure spray head rinses the inner wall of the container to prevent cross-contamination.

Description

Technical Field

[0001] This utility model relates to the field of water quality testing technology, specifically a portable rapid eutrophication detector for water bodies. Background Technology

[0002] Eutrophication refers to the excessive accumulation of nutrients such as nitrogen and phosphorus in water bodies, leading to the overgrowth of algae and phytoplankton, which in turn causes ecological problems such as water quality deterioration, decreased dissolved oxygen, and reduced biodiversity. It is common in slow-flowing water bodies such as lakes, reservoirs, and rivers, and is a typical environmental consequence of human activities (such as agricultural fertilization and sewage discharge). The monitoring instrument determines the nutrient status of the water body in real time by detecting key indicators (such as total nitrogen, total phosphorus, chlorophyll a, dissolved oxygen, pH value, etc.).

[0003] In the prior art, a portable device for detecting eutrophication in water bodies is disclosed in patent publication number "CN206788027U". This device relates to the field of water body detection technology and includes a suction body, detection bottles, and colorimetric cards. The suction body includes a cylinder, a piston plug, a piston rod, and a push plate. A connecting pipe is connected to the lower end of the cylinder, communicating with the interior of the cylinder. A three-way valve is connected to the other end of the connecting pipe, and the other two ports of the three-way valve are connected to detection bottles arranged side-by-side. Each detection bottle has a through hole on its surface, into which a dropper is inserted. A stirring mechanism is connected to one end of each detection bottle, and a mounting bracket is connected to the other end. The top of the mounting bracket is connected to the cylinder, and colorimetric cards are provided on the surfaces of the mounting bracket corresponding to the two detection bottles. This invention achieves the technical effects of simple structure, convenient portability, and ease of use.

[0004] However, existing technologies still have significant shortcomings. Traditional detectors mainly rely on manual operation, requiring manual calibration of probes, individual sampling and testing, and data recording. The process is cumbersome and prone to human error. Cleaning requires disassembling parts or connecting external water pipes, posing a risk of cross-contamination and making waste disposal inconvenient. The modular design results in bulky equipment that is difficult to carry and has low efficiency in field operations. Utility Model Content

[0005] The purpose of this invention is to provide a portable rapid eutrophication detector for water bodies to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a portable rapid eutrophication detector for water bodies, comprising a detection box, a detection port on the top surface of the detection box, a movable platform fitted into the detection port, a detection probe on the bottom surface of the movable platform, a movable disk installed inside the detection box, a base plate fixed between two movable disks, a sample container and a calibration container fixed on the top surface of the base plate respectively, a cleaning hole penetrating through the center of the base plate, and the detection probe being movably connected to the cleaning hole, a storage cavity opening at the bottom of the base plate, a cleaning box fixed to the bottom surface inside the detection box, a spray head array installed on the top surface of the cleaning box, and a display panel installed on the front surface of the movable platform.

[0007] As can be seen, the above technical solution achieves efficient and accurate detection by adopting an automatic detection method. By integrating the probe for automatic translation and calibration, the efficiency and reliability of eutrophication monitoring are greatly improved. After detection, the container is automatically rotated 180 degrees to automatically discharge waste liquid. At the same time, the high-pressure spray head washes the inner wall of the container to thoroughly remove algal slime and calibration solution residues, preventing cross-contamination. The automatic detection structure and cleaning structure are highly integrated into the detection box, which greatly improves the portability and field applicability of the equipment. The integrated and compact layout allows the instrument to be carried by one hand or in a backpack.

[0008] Preferably, the mobile platform is fitted to the top surface of the testing box, the top surface of the testing box is provided with a sliding groove, and the moving end of the mobile platform cooperates with the sliding groove.

[0009] As can be seen, in the above technical solution, the mobile platform can slide on the top surface of the chute and the detection box, so that the detection probe on the mobile platform can move and adjust its position along the detection port.

[0010] Preferably, a lead screw and a limiting rod are installed inside the slide groove, and the moving end of the moving platform is sleeved on the surface of the lead screw and the limiting rod, and the moving end of the moving platform is threadedly connected to the surface of the lead screw.

[0011] As can be seen, in the above technical solution, adding a motor to the lead screw can make the lead screw rotate, and since the moving platform is threadedly connected to the surface of the lead screw, the moving platform can move linearly in the chute when the lead screw rotates, realizing fully automatic switching detection between the calibration solution and the sample container.

[0012] Preferably, an electric cylinder is bolted to the top surface of the mobile platform, and the telescopic end of the electric cylinder is connected to the detection probe.

[0013] As can be seen, in the above technical solution, the electric cylinder is a modular product with an integrated design of servo motor and lead screw, which mainly converts the rotational motion of the servo motor into linear motion to achieve the purpose of lifting.

[0014] Preferably, a rotating component is fixed on one side of the testing box, and the movable plate is connected to the bearings on both sides of the testing box, and a handle is fixed on the surface of the testing box.

[0015] As can be seen, in the above technical solution, the rotating component is used to connect the motor, the movable disk, and the two end interface bearings of the detection box. Under the drive of the motor, the movable disk can be rotated, thereby achieving the function of controlling the rotation of the substrate.

[0016] Preferably, a splash guard is fixed to the top surface of the substrate, and the splash guard is arc-shaped, with the sample container and calibration container located between the two splash guards.

[0017] As can be seen, in the above technical solution, the substrate includes a splash guard. Since the splash guard is designed in an arc shape, the liquid sprayed during cleaning will be blocked by the splash guard, preventing large-area splashing to other parts of the test box.

[0018] Preferably, the testing box has drain ports on both sides, and the drain ports are located in the receiving cavity. The cleaning box is trapezoidal.

[0019] As can be seen, in the above technical solution, the drain port is used for personnel to manually discharge the waste liquid from the detection box, and the trapezoidal structure of the cleaning box allows the waste liquid to flow along the cleaning surface to a position close to the drain port.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. The automatic detection method achieves efficient and accurate detection of the instrument. By integrating automatic probe translation and calibration detection, the efficiency and reliability of eutrophication monitoring of water bodies are greatly improved. The dissolved oxygen detection probe realizes fully automatic switching detection between calibration solution and sample container through the moving platform. The sensor reference value is accurately corrected during the calibration stage to ensure the subsequent sample detection. It solves the problem of human error that is easily introduced by traditional manual calibration. The detection process is seamless. After the probe is calibrated, it is immediately translated to the sample position to complete the dissolved oxygen concentration measurement. No manual intervention is required throughout the process, and the single detection time is greatly shortened.

[0022] 2. The container on the substrate can be repositioned by rotation. After testing, the container is automatically rotated 180 degrees to automatically discharge waste liquid. At the same time, a high-pressure spray head rinses the inner wall of the container to thoroughly remove algae slime and calibration solution residue, preventing cross-contamination. Waste liquid can be collected and recycled. Since the detection probe can be moved, it can be passed through the cleaning hole during the cleaning process. The detection probe can be cleaned at the same time as the container is sprayed. The automated cleaning structure greatly reduces the complexity of the post-test cleaning operation for the staff, ensuring that the probe and container are in a clean state before each test, thereby avoiding cross-contamination, maintaining sensor sensitivity, and providing a stable and reliable data foundation for subsequent tests. At the same time, the automatic detection structure and cleaning structure are highly integrated into the detection box, which greatly improves the portability and field applicability of the equipment. The integrated and compact layout allows the instrument to be carried by one hand or in a backpack. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of the testing box of this utility model;

[0024] Figure 2 This is a perspective view of the present utility model;

[0025] Figure 3 This is an overall structural diagram of the present invention;

[0026] Figure 4 This is a front view of the present invention;

[0027] Figure 5 This is a top view of the present invention;

[0028] Figure 6 This is a structural diagram of the substrate of this utility model.

[0029] In the diagram: 1. Detection box; 2. Moving platform; 3. Detection probe; 4. Detection port; 5. Movable disc; 6. Base plate; 7. Sample container; 8. Cleaning hole; 9. Calibration container; 10. Splash guard; 11. Cleaning box; 12. Spray head; 13. Storage chamber; 14. Drain outlet; 15. Electric cylinder; 16. Lead screw; 17. Slide groove; 18. Limiting rod; 19. Display panel; 20. Handle; 21. Rotating component. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-6 This utility model provides a technical solution:

[0032] Example 1: A portable rapid eutrophication detection instrument: It includes a detection box 1, a detection port 4 on the top surface of the detection box 1, a movable platform 2 embedded in the detection port 4, a detection probe 3 on the bottom surface of the movable platform 2, a base plate 6 fixed between two movable discs 5, a sample container 7 and a calibration container 9 fixed on the top surface of the base plate 6, and a display panel 19 installed on the front of the movable platform 2. Eutrophication refers to the excessive accumulation of nutrients in a water body, leading to the overgrowth of algae, phytoplankton, etc., resulting in ecological problems such as water quality deterioration, decreased dissolved oxygen, and reduced biodiversity. Therefore, in eutrophic waters, the excessive proliferation of algae significantly affects dissolved oxygen concentration. Monitoring abnormal changes in dissolved oxygen concentration directly reflects the damage to the aquatic ecosystem caused by excessive algal growth. During the day, dissolved oxygen concentration increases due to photosynthesis by algae, while at night, due to respiration, algae consume oxygen, causing a sharp drop in dissolved oxygen concentration, leading to fish suffocation. By recording the diurnal fluctuations of dissolved oxygen, and judging whether the values ​​are within the specified range, algal activity can be directly determined. This is more intuitive than simply measuring the number of algae. If the values ​​are below the set range, it indicates that algal decomposition consumes oxygen severely, suggesting that the water body has entered a hypoxic eutrophication stage, which may lead to... For issues like dead fish and black, smelly water, rapid testing only requires checking the dissolved oxygen concentration at any time to determine if the water is abnormal. To determine if eutrophication is caused by algae, daytime and nighttime testing are necessary. The detection box 1 is the outer casing of the instrument, with multiple containers fixed on the internal base plate 6: a sample container 7 and a calibration container 9. These containers store the extracted water sample and calibration solution, respectively. The detection probe 3 is the dissolved oxygen sensor probe. Before placing the detection probe 3 into the sample container 7 to measure the dissolved oxygen concentration, the dissolved oxygen sensor probe 3 needs to be placed... The sample is placed in a calibration solution with a known oxygen concentration, such as zero oxygen solution or saturated air-water, and the reading is allowed to stabilize to ensure accuracy. Therefore, before eutrophication testing, a sample must be extracted and placed in sample container 7, and the required calibration solution must be injected into calibration container 9. After that, the instrument can be started for testing. The probe moves linearly on the top surface of the detection box 1 under the control of the moving platform 2, so that the probe 3 passes through the positions of calibration container 9 and sample container 7 in sequence, and then descends to enter the corresponding container to contact the liquid. The dissolved oxygen concentration value after testing is directly displayed on the display panel 19 for easy reading by the staff.

[0033] The detection chamber 1 is equipped with a movable plate 5. Further explanation: the sample container 7 and calibration container 9 are both fixed to the base plate 6, preventing them from falling off when the base plate 6 rotates 180°. This also ensures the cleaning hole 8 is fixed in position, facilitating cleaning of the containers and the detection probe 3. A cleaning hole 8 passes through the center of the base plate 6, and the detection probe 3 is movably connected to the cleaning hole 8. A storage cavity 13 is provided at the bottom of the base plate 6. A cleaning chamber 11 is fixed to the bottom surface inside the detection chamber 1, and spray heads 12 are arrayed on the top surface of the cleaning chamber 11. After waiting for recording, the substrate 6 can be directly rotated so that the openings of several containers face downwards and align with the spray head 12. At this time, the pump in the cleaning tank 11 draws the internal cleaning solution and sends it through the pipe to the spray head 12. The spray head 12 sprays the cleaning solution to clean the sample container 7 and calibration container 9. At the same time, since the calibration solution cannot be reused after being exposed to the outside, the water sample and the used calibration solution can be automatically poured out of the container into the receiving cavity 13 while the container is rotating and waiting for cleaning, and then wait for spray cleaning. It is necessary to note that During cleaning, the detection probe 3 is moved to the center of the detection box 1 and aligned with the cleaning hole 8. The detection probe 3 is then lowered so that it passes through the cleaning hole 8 and is positioned at the corresponding spray head 12. During the cleaning process, the spray head 12 can also clean the surface of the detection probe 3. The cleaning liquid flows into the receiving cavity 13, where it is manually drained by the operator. Drainage ports 14 are provided on both sides of the detection box 1, and the drainage ports 14 are located in the receiving cavity 13. The cleaning box 11 is trapezoidal, and a splash guard 10 is fixed to the top surface of the base plate 6. Furthermore, the splash guard 10 is arc-shaped, and both the sample container 7 and the calibration container 9 are located between the two splash guards 10. The substrate 6 includes a splash-proof plate. Because the splash guard 10 is arc-shaped, the liquid sprayed during cleaning will be blocked by the splash guard 10, preventing large-area splashing to other positions of the detection box 1. The sprayed liquid will eventually fall into the receiving cavity 13 by gravity. At the same time, because the cleaning box 11 is a trapezoidal mechanism, the falling cleaning liquid can fall into the positions on both sides along the inclined surface of the cleaning box 11, making it convenient to manually drain the liquid later.

[0034] Example 2:

[0035] Based on Embodiment 1, a rotating part 21 is fixed on one side of the test box 1, and the movable disk 5 is connected to the bearings on both sides of the test box 1. A handle 20 is fixed on the surface of the test box 1, and the drain port 14 can be blocked by the corresponding sealing plug. During manual draining operation, it can be taken out so that the liquid can be discharged from the drain ports 14 on both sides of the test box 1. When going out, the staff can hold the handle 20 to carry the instrument.

[0036] The mobile platform 2 is attached to the top surface of the detection box 1. The top surface of the detection box 1 is provided with a sliding groove 17, and the moving end of the mobile platform 2 cooperates with the sliding groove 17. A lead screw 16 and a limiting rod 18 are installed inside the sliding groove 17, and the moving end of the mobile platform 2 is sleeved on the surface of the lead screw 16 and the limiting rod 18. The moving end of the mobile platform 2 is threadedly connected to the surface of the lead screw 16. It should be noted that the moving end at the bottom of the mobile platform 2 can slide within the sliding groove 17. While installing the lead screw 16 and the limiting rod 18 in the sliding groove 17, a servo motor is added to the lead screw 16, which can rotate the lead screw 16. Since the moving end at the bottom of the mobile platform 2 is threadedly connected to the surface of the lead screw 16, the lead screw 16 can move linearly on the surfaces of the lead screw 16, the sliding groove 17, and the limiting rod 18 when the lead screw 16 rotates. This allows the detection probe 3 at the bottom of the mobile platform 2 to move to different positions at the detection port 4 on the top surface of the detection box 1 to perform its work.

[0037] An electric cylinder 15 is bolted to the top surface of the mobile platform 2, and the telescopic end of the electric cylinder 15 is connected to the detection probe 3. The electric cylinder 15 is a modular product with an integrated design of servo motor and lead screw. It mainly converts the rotational motion of the servo motor into linear motion to achieve the purpose of lifting. The addition of the electric cylinder 15 to the top surface of the mobile platform 2 allows the detection probe 3 at the lifting end to move up and down by electrically driving the lead screw. The calibration, testing, and cleaning steps of the detection probe 3 all need to be coordinated with the translation and lifting motion of the detection probe 3 to achieve automation. The rotating part 21 is used to connect the motor, the movable disk 5 and the two end interface bearings of the detection box 1, and the base plate 6 is fixed between the two movable disks 5. The rotating end of the motor is connected to the connecting shaft of the rotating part 21. Under the drive of the motor, the movable disk can move up and down. 5. Rotation, thereby controlling the rotation of substrate 6. When the detection or cleaning button is activated, the main control chip automatically coordinates the work of each component through a preset program. In detection mode, the main control chip drives the servo motor to precisely control the rotation of the lead screw 16, so that the moving platform 2 moves the detection probe 3 along a preset path to the top of the calibration or sample container 7. The electric cylinder 15 synchronously performs lifting and lowering actions to complete the immersion detection. The sensor data is transmitted back to the processing module in real time. In cleaning mode, the main control chip first starts the rotating motor to flip the substrate 6 180° to drain the liquid, and then triggers the cleaning pump to pressurize and deliver the cleaning liquid. The spray head 12 sprays, and at the same time, the moving platform 2 automatically positions the probe to the cleaning position to receive rinsing. All actions are controlled by a closed loop through a PID algorithm, and the flow sensor monitors the amount of cleaning liquid used to ensure that no manual intervention is required throughout the process.

[0038] Working principle: After the detection is started, the mobile platform 2, driven by the lead screw 16 driven by the servo motor, moves the dissolved oxygen probe precisely along the slide 17 to the top of the calibration container 9. The electric cylinder 15 controls the probe to descend and immerse in zero-oxygen and saturated oxygen solutions to complete two-point calibration. After calibration, the probe automatically moves to the sample container 7 to detect the DO value of the water sample. The data is displayed on the panel in real time. After the detection is completed, the motor drives the movable disk 5 to rotate the base plate 6 180°. The container opening faces down and the waste liquid is poured into the collection chamber 13. At the same time, the probe moves to the cleaning position, and the high-pressure spray head 12 rinses the inner wall of the container. The arc-shaped anti-splash plate 10 blocks splashing. The waste liquid is collected along the inclined surface of the trapezoidal cleaning tank 11 to the drain port 14. The detection of DO can be completed quickly and efficiently, and the eutrophication status assessment can be completed.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable rapid eutrophication detection instrument for water bodies, characterized in that: The test box (1) includes a test port (4) on the top surface of the test box (1), a moving platform (2) is fitted into the test port (4), a test probe (3) is provided on the bottom surface of the moving platform (2), a movable disk (5) is installed inside the test box (1), a base plate (6) is fixed between the two movable disks (5), a sample container (7) and a calibration container (9) are fixed on the top surface of the base plate (6), a cleaning hole (8) is passed through the center of the base plate (6), and the test probe (3) is movably connected to the cleaning hole (8). A storage cavity (13) is provided at the bottom of the base plate (6), a cleaning box (11) is fixed on the bottom surface inside the test box (1), a spray head (12) is arrayed on the top surface of the cleaning box (11), and a display panel (19) is installed on the front surface of the moving platform (2).

2. The portable rapid eutrophication detector according to claim 1, characterized in that: The mobile platform (2) is attached to the top surface of the testing box (1), and the top surface of the testing box (1) is provided with a sliding groove (17), and the moving end of the mobile platform (2) cooperates with the sliding groove (17).

3. The portable rapid eutrophication detector according to claim 2, characterized in that: The slide (17) is equipped with a lead screw (16) and a limiting rod (18), and the moving end of the moving platform (2) is sleeved on the surface of the lead screw (16) and the limiting rod (18), and the moving end of the moving platform (2) is threadedly connected to the surface of the lead screw (16).

4. The portable rapid eutrophication detector according to claim 3, characterized in that: The top surface of the mobile platform (2) is bolted with an electric cylinder (15), and the telescopic end of the electric cylinder (15) is connected to the detection probe (3).

5. A portable rapid eutrophication detector according to claim 1, characterized in that: A rotating part (21) is fixed on one side of the test box (1), and the movable plate (5) is connected to the bearings on both sides of the test box (1). A handle (20) is fixed on the surface of the test box (1).

6. The portable rapid eutrophication detector according to claim 1, characterized in that: The top surface of the substrate (6) is fixed with a splash guard (10), and the splash guard (10) is arc-shaped, and the sample container (7) and the calibration container (9) are both located between the two splash guards (10).

7. A portable rapid eutrophication detector for water bodies according to claim 1, characterized in that: The detection box (1) has drain ports (14) on both sides, and the drain ports (14) are located in the storage cavity (13). The cleaning box (11) is trapezoidal.

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