Lake water quality monitoring equipment and monitoring method thereof

Abstract

The invention discloses lake water quality monitoring equipment and a monitoring method thereof. The lake water quality monitoring equipment is designed for overcoming the defects of traditional water quality monitoring equipment in a lake environment with flourishing aquatic plants. The equipment comprises a bearing table, a monitoring head, a buoy, a connecting rod, a water supply pipe and a water conveying pipe, one end of the water conveying pipe is provided with a water pumping mechanism used for pumping water to the monitoring head, and the outer side is provided with a filtering mechanism which can drive the water conveying pipe to shake water grass during water pumping; a displacement mechanism is arranged in the bearing table and can be triggered by water flow to displace the equipment; a water outlet mechanism is further arranged in the monitoring head and used for draining water. Through the design, the problems that traditional equipment is easily interfered by aquatic plants, a monitoring area is fixed and the like are effectively solved, lake water samples in different areas can be efficiently and accurately collected for detection, a reliable guarantee is provided for accurate monitoring of lake water quality and ecological environment assessment and treatment, and the efficiency and comprehensiveness of water quality monitoring are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and in particular to a lake water quality monitoring device and a monitoring method thereof. Background Art

[0002] As an important water resource reserve, lakes undertake multiple functions such as irrigation, fishery, industrial water, domestic water and maintaining ecological balance. However, with the acceleration of industrialization and urbanization and the influence of factors such as agricultural non-point source pollution, lake water quality faces many challenges, such as eutrophication, chemical pollution, and excessive microorganisms. Water quality monitoring of lakes can timely and accurately grasp the water quality status and its changing trends, and provide a scientific basis for taking effective pollution control measures and formulating reasonable water resource protection strategies, thereby ensuring the sustainable use of lake water resources and the healthy and stable development of the ecosystem.

[0003] Traditional buoy-type water quality monitoring equipment has some obvious defects in practical applications, especially in lake environments with lush aquatic plants. These devices usually lack effective aquatic plant filtering and cleaning mechanisms, and are easily interfered by aquatic plants when collecting water samples. For example, aquatic plants may clog the sampling tube, hindering the normal extraction of water samples, resulting in the inability to carry out monitoring work smoothly or the collected water samples are not representative. Moreover, traditional equipment is often fixed in position and difficult to move autonomously on the lake surface, which means that it can only monitor the water quality of a single area and cannot fully reflect the water quality conditions in different areas of the entire lake. The data obtained is very limited and it is difficult to meet the needs of accurate and comprehensive monitoring of lake water quality. Summary of the invention

[0004] The purpose of the present invention is to provide a lake water quality monitoring device and a monitoring method thereof, so as to solve the problems that the existing lake water quality monitoring equipment is easily blocked by aquatic plants in a lake environment with lush aquatic plants and the monitoring area is fixed.

[0005] The present invention is achieved through the following technical solutions:

[0006] According to one aspect of the present invention, there is provided a lake water quality monitoring device, comprising a supporting platform and a monitoring head, wherein the monitoring head is arranged on the supporting platform, a connecting rod and a buoy are arranged on the periphery of the supporting platform, the buoy is connected to the supporting platform through the connecting rod, a water supply pipe connected to the monitoring head is arranged inside the supporting platform, a water delivery pipe connected to the water supply pipe is arranged below the supporting platform, one end of the water delivery pipe is connected to the supporting platform, and the other end of the water delivery pipe is provided with a water pumping mechanism, the water pumping mechanism is used to absorb the lake water sample by the water delivery pipe and transport it to the monitoring head; a filtering mechanism for isolating aquatic plants is also arranged on the outside of the water delivery pipe, and the water pumping mechanism can drive the filtering mechanism to shake off the attached aquatic plants when pumping water; a displacement mechanism is arranged inside the supporting platform, and the displacement mechanism can be triggered by the liquid flow in the water delivery pipe to cause the water quality monitoring device to be displaced; a water outlet mechanism is also arranged inside the monitoring head to discharge the lake water sample after the test.

[0007] As a partial embodiment, the water pumping mechanism includes a pump body, a cavity is provided inside the pump body, one end of the cavity is connected to the water pipe, and the other end of the cavity is provided with a water suction head connected to the cavity; a first gear, a second gear, a first rotating shaft and a second rotating shaft are provided in the pump body, the two ends of the first rotating shaft are respectively connected to the inner wall of the cavity, and the two ends of the second rotating shaft are also respectively connected to the inner wall of the cavity, the first gear is sleeved on the outer edge of the first rotating shaft, the second gear is sleeved on the outer edge of the second rotating shaft, the first gear is meshed with the second gear, and a first motor is provided on the outside of the pump body, and the rotating shaft of the first motor passes through the pump body and is fixedly connected to the first rotating shaft for driving the first gear to rotate.

[0008] As some embodiments, a fixing plate is provided on the outer wall of the water pipe, and a guide groove is provided on the pump body; the filtering mechanism includes a filter barrel arranged on the outside of the pump body and accommodating the pump body, a plurality of filter holes are provided on the side wall and the bottom plate of the filter barrel, and a guide rod is also provided on the filter barrel, one end of the guide rod is connected to the inner wall of the filter barrel, and the other end of the guide rod is provided with a protrusion matching the guide groove; a straight rod is also provided on the inner wall of the filter barrel, one end of the straight rod is connected to the inner wall of the filter barrel, and the other end of the straight rod is connected to a connecting rod, and a rack segment is provided on the connecting rod; a third gear and a third rotating shaft matching the rack segment are provided on the outside of the pump body, and the third rotating shaft passes through the pump body and is fixedly connected to the first rotating shaft. When the second gear rotates, it can drive the filter barrel to move parallel to the axis of the water pipe through the third gear and the rack segment to shake off the water plants attached to the filter barrel.

[0009] As a part of the embodiments, a chamber is provided inside the support platform, the displacement mechanism includes a fourth rotating shaft, an impeller shaft, a first bevel gear and a second bevel gear matched with the first bevel gear, both ends of the fourth rotating shaft are respectively connected to the inner wall of the chamber, the second bevel gear is sleeved on the fourth rotating shaft, a collision rod made of elastic material is also provided on the inner wall of the chamber, and a protrusion capable of generating motion interference with the collision rod is provided on the second bevel gear; the axis of the second bevel gear is perpendicular to the axis of the first bevel gear; The first bevel gear is fixedly sleeved on the outer edge of the impeller shaft, one end of the impeller shaft is movably connected to the inner wall of the chamber, the other end of the impeller shaft extends to the inside of the water supply pipe, and an impeller is provided on the end of the impeller shaft inside the water supply pipe; the axis of the impeller shaft coincides with the axis of the water pipe; when the lake water sample flows from the water pipe to the water supply pipe, the impeller can be driven to drive the first bevel gear, so that the protrusion on the second bevel gear continuously touches the collision rod, causing the collision rod to produce elastic deformation, and the kinetic energy of the elastic deformation causes the support platform to vibrate, thereby achieving displacement on the lake surface.

[0010] As a partial embodiment, a cavity is provided inside the monitoring head, and the water outlet mechanism includes a first motor and a piston rod provided on the monitoring head, one end of the piston rod is connected to the first motor, and the other end of the piston rod is provided with a piston plate, and the piston plate is provided with a check mechanism for preventing the lake water sample from flowing back to the water supply pipe.

[0011] As some embodiments, a positioning rod is provided on the fixing plate, a groove matching the positioning rod is provided on the connecting rod, and an elastic member is provided at one end of the connecting rod close to the fixing plate.

[0012] As a partial embodiment, the check mechanism includes an opening provided on the piston plate, wherein a fixed block, a movable block and a second spring are provided in the opening, wherein one end of the second spring is connected to the inner wall of the fixed block, and the other end of the second spring is connected to the movable block, and when the second spring is in an initial state, the movable block can close the water flow channel in the opening.

[0013] As a partial embodiment, the elastic member is a first spring, one end of the first spring is connected to the fixed plate, the other end of the first spring is connected to the end of the connecting rod, and when the first spring is in an initial state, the guide rod is located at the bottom of the guide groove.

[0014] As some embodiments, the elastic material is rubber.

[0015] According to another aspect of the present invention, a detection method is provided, using the above-mentioned lake water quality monitoring equipment to perform water quality monitoring, the steps are as follows:

[0016] S1, Equipment preparation: Place the monitoring equipment with connecting rod and buoy on the lake surface and ensure that all components are in normal initial status.

[0017] S2, start collection: turn on the water pumping mechanism, the motor drives the gear to create negative pressure in the pump body, the lake water is extracted through the suction head and the water pipe, the filter bucket of the filtration mechanism isolates the aquatic plants and shakes off the attached aquatic plants with the help of linkage, and the water sample enters the water supply pipe through the filter hole.

[0018] S3, multi-point sampling: The water flow in the water pipe drives the impeller to rotate. Through the gear transmission and the action of the bump and the collision rod, the support platform vibrates to cause the equipment to move, and water samples from different areas are collected.

[0019] S4, water sample detection: The water sample enters the monitoring head, and the internal detection device analyzes various water quality indicators to obtain data.

[0020] S5, drainage cycle: After detection, the water discharge mechanism is started, and the motor drives the piston rod to drive the piston plate to discharge the water sample. The equipment repeats the above steps S2-S5 for continuous monitoring.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects: the present invention can efficiently transport the lake water samples absorbed by the water pipe to the monitoring head by arranging a water pumping mechanism, thereby providing a stable source of water samples for water quality monitoring; the filtering mechanism can effectively isolate aquatic plants when the water pumping mechanism is working, thereby preventing the aquatic plants from clogging the pipeline and affecting the water sample collection, and at the same time, through its own vibration design, it can timely shake off the attached aquatic plants, thereby ensuring the continuous and normal operation of the equipment; the displacement mechanism is triggered by the liquid flow in the water pipe to cause the water quality monitoring equipment to shift, thereby realizing the collection of water samples from different areas of the lake, which greatly improves the comprehensiveness and representativeness of the monitoring data, and helps to more accurately grasp the overall water quality of the lake. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 A top view of the present invention;

[0025] Figure 3 is a side sectional view of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the filtering mechanism of the present invention;

[0027] Figure 5 for Figure 4 A magnified image of point A;

[0028] Figure 6 A top view of the filtering mechanism of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the displacement mechanism of the present invention;

[0030] Figure 8 is a top view of the displacement mechanism of the present invention;

[0031] Fig. 9 for Figure 7 The enlarged view of point B is intended to show the structural schematic diagram of the non-return mechanism of the present invention;

[0032] Fig.10 It is a schematic diagram of the structure and operation of the water outlet mechanism of the present invention.

[0033] The reference numerals represent:

[0034] 10, bearing platform, 11, connecting rod, 12, buoy, 13, support plate, 14, monitoring head, 141, perforation, 142, drainage pipe, 143, first motor, 144, piston rod, 145, piston plate,

[0035] 20, water pipe, 21, fixing plate,

[0036] 30, pump body, 301, guide groove, 31, cavity, 32, first gear, 321, first rotating shaft, 33, second gear, 331, second rotating shaft, 34, water suction head, 341, opening, 35, third gear, 36, second motor,

[0037] 40, filter barrel, 401, filter hole, 41, guide rod, 42, straight rod, 43, connecting rod, 431, rack segment, 44, positioning rod, 45, first spring,

[0038] 50, impeller, 51, impeller shaft, 52, fixed cylinder, 53, first bevel gear, 54, second bevel gear, 541, fourth rotating shaft, 55, bump, 56, collision rod, 57, water supply pipe,

[0039] 60, fixed block, 61, moving block, 62, second spring. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiment of the present invention clearer, the technical scheme of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention. The schematic implementation mode of the present invention and its description are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual research and development stage.

[0041] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0042] Traditional buoy-type water quality monitoring equipment has significant defects in lake environments with lush aquatic plants. Because there is no effective aquatic plant filtering and cleaning mechanism, water samples are disturbed by aquatic plants during collection. For example, the sampling tube is easily blocked, which hinders the extraction of water samples, making it difficult to carry out monitoring work or the water samples are not representative. In addition, its position is fixed and it cannot move autonomously on the lake surface. It can only monitor the water quality of a single area. The data is limited, making it difficult to accurately and comprehensively monitor the water quality of the lake.

[0043] Embodiment 1:

[0044] like Figures 1 to 4 As shown, this embodiment provides a lake water quality monitoring device, including a carrier platform 10 and a monitoring head 14. The monitoring head 14 is arranged on the carrier platform 10. A connecting rod 11 and a buoy 12 are arranged on the periphery of the carrier platform 10. The buoy 12 is connected to the carrier platform 10 through the connecting rod 11. A water supply pipe 57 connected to the monitoring head 14 is arranged inside the carrier platform 10. A water delivery pipe 20 connected to the water supply pipe 57 is arranged below the carrier platform 10. One end of the water delivery pipe 20 is connected to the carrier platform 10. The other end of the water delivery pipe 20 is provided with a water pumping mechanism. The water pumping mechanism is used to absorb the lake water sample into the water delivery pipe 20 and transport it to the monitoring head 14; the outer side of the water delivery pipe 20 is also provided with a filtering mechanism for isolating aquatic plants. When pumping water, the water pumping mechanism can drive the filtering mechanism to shake off the attached aquatic plants; the interior of the carrier platform 10 is provided with a displacement mechanism. The displacement mechanism can be triggered by the liquid flow in the water delivery pipe 20 to cause the water quality monitoring equipment to move; the interior of the monitoring head 14 is also provided with a water outlet mechanism for discharging the lake water sample that has been tested.

[0045] In this solution, the water pumping mechanism is the power source for collecting lake water samples. It achieves efficient water pumping through gear transmission, ensuring a stable supply of lake water samples to the monitoring head 14 for detection and analysis. In the filtering mechanism, the filter holes 401 of the filter barrel 40 can effectively block aquatic plants, and at the same time achieve self-cleaning through linkage with the water pumping mechanism, thereby ensuring the continuous operation capability of the equipment. The displacement mechanism utilizes the kinetic energy of the water flow and cleverly converts it into the moving force of the equipment on the lake surface, so that the monitoring equipment can collect lake water samples in a wide area of ​​the lake surface, greatly expanding the monitoring range. The water outlet mechanism ensures that the tested lake water samples can be discharged smoothly, maintains the smoothness of the monitoring process, and avoids the interference of sample residues on subsequent detection.

[0046] This solution aims to solve the problem that in a lake environment with lush aquatic plants, traditional water quality monitoring equipment is easily disturbed by aquatic plants, resulting in difficulty in collecting lake water samples and limited monitoring range. When working, the water pumping mechanism starts to drive the relevant components to operate, on the one hand, extracting and transporting lake water samples to the monitoring head 14, and on the other hand, driving the filtering mechanism to work. When the water pumping mechanism is running, it drives the filter barrel 40 in the filtering mechanism to move up and down or reciprocate, so that the aquatic plants attached to the filter barrel 40 fall off in the vibration, ensuring that the lake water sample can be smoothly collected through the filter hole 401. At the same time, with the flow of water in the water pipe 20, the displacement mechanism is triggered. The water flow drives the impeller 50 to rotate, and the bearing platform 10 vibrates through the gear transmission, thereby moving the entire equipment on the lake surface to achieve sampling of lake water in different areas. It effectively avoids the blockage of aquatic plants, increases the comprehensiveness and representativeness of monitoring, improves the accuracy and efficiency of lake water quality monitoring, provides strong support for the accurate assessment and protection of the lake ecological environment, and can grasp the dynamic changes of lake water quality more timely and accurately, so as to take targeted governance measures.

[0047] As a preferred embodiment, the water pumping mechanism includes a pump body 30, a cavity 31 is provided inside the pump body 30, one end of the cavity 31 is connected to the water pipe 20, and the other end of the cavity 31 is provided with a water suction head 34 connected to the cavity 31; a first gear 32, a second gear 33, a first rotating shaft 321 and a second rotating shaft 331 are provided in the pump body 30, the two ends of the first rotating shaft 321 are respectively connected to the inner wall of the cavity 31, and the two ends of the second rotating shaft 331 are also respectively connected to the inner wall of the cavity 31, the first gear 32 is sleeved on the outer edge of the first rotating shaft 321, the second gear 33 is sleeved on the outer edge of the second rotating shaft 331, the first gear 32 is meshed with the second gear 33, and a first motor 143 is provided on the outside of the pump body 30, and the rotating shaft of the first motor 143 passes through the pump body 30 and is fixedly connected to the first rotating shaft 321, so as to drive the first gear 32 to rotate.

[0048] During operation, the first motor 143 starts to drive the first rotating shaft 321 and the first gear 32 to rotate, and drives the second gear 33 to rotate through gear meshing, thereby generating negative pressure in the cavity 31, thereby extracting lake water from the suction head 34 through the water pipe 20, providing a stable supply of lake water samples for subsequent water quality monitoring, ensuring the power source for collecting lake water samples, ensuring that the equipment can continue to work normally, and improving monitoring efficiency.

[0049] As a preferred embodiment, a fixing plate 21 is provided on the outer wall of the water delivery pipe 20, and a guide groove 301 is provided on the pump body 30; the filtering mechanism includes a filter barrel 40 disposed outside the pump body 30 and accommodating the pump body 30, and a plurality of filter holes 401 are provided on the side wall and the bottom plate of the filter barrel 40, and a guide rod 41 is also provided on the filter barrel 40, one end of the guide rod 41 is connected to the inner wall of the filter barrel 40, and the other end of the guide rod 41 is provided with a protrusion matching the guide groove 301; a straight rod 42 is also provided on the inner wall of the filter barrel 40, and the straight rod 42 One end of the straight rod 42 is connected to the inner wall of the filter barrel 40, and the other end of the straight rod 42 is connected to a connecting rod 43, on which a rack segment 431 is provided; a third gear 35 and a third rotating shaft matching the rack segment 431 are provided on the outer side of the pump body 30, and the third rotating shaft passes through the pump body 30 and is fixedly connected to the first rotating shaft 321. When the second gear 33 rotates, it can drive the filter barrel 40 to move parallel to the axis of the water pipe 20 through the third gear 35 and the rack segment 431, so as to shake off the aquatic plants attached to the filter barrel 40.

[0050] The filter barrel 40 of the filtering mechanism is sleeved on the outside of the pump body 30, and its side wall and bottom plate are provided with filter holes 401 for filtering lake water and isolating aquatic plants. One end of the guide rod 41 on the filter barrel 40 is connected to the inner wall, and the protrusion at the other end cooperates with the guide groove 301 on the pump body 30 to ensure the movement direction of the filter barrel 40. The straight rod 42 in the filter barrel 40 is connected to the rack segment 431 through the connecting rod 43, and the third gear 35 on the outside of the pump body 30 cooperates with the third rotating shaft, and the third rotating shaft is fixed to the first rotating shaft 321. When the water pumping mechanism is working, the first rotating shaft 321 drives the third gear 35 to rotate and mesh with the rack segment 431, so that the connecting rod 43 moves upward. When the last tooth disengages from the third gear 35, the connecting rod 43 falls down and is lifted up again under the action of gravity and related elastic parts, and repeatedly drives the filter barrel 40 to vibrate up and down, effectively shaking off the attached aquatic plants and preventing the aquatic plants from clogging the filter hole 401, ensuring that the collection of lake water samples is not disturbed by the aquatic plants, maintaining the long-term stable operation of the equipment, and improving the adaptability of the equipment to complex environments.

[0051] Since the connecting rod 43 has a certain length and has multiple teeth, when the water pump mechanism starts to work, the third rotating shaft rotates together with the first rotating shaft 321, driving the third gear 35 to rotate. During the rotation process, the third gear 35 meshes with the teeth of the connecting rod 43 in sequence, and through this meshing action, the power is transmitted to the connecting rod 43, so that the connecting rod 43 moves upward along the set direction (parallel to the axis of the water pipe 20). As the third gear 35 continues to rotate, when the last tooth of the connecting rod 43 is meshed with the third gear 35, since the connecting rod 43 loses the support and transmission connection with the teeth of the third gear 35, under the synergistic effect of gravity and possible elastic components such as the first spring 45, the connecting rod 43 begins to fall downward. However, at this time, the third gear 35 is still in a rotating state. At the moment when the connecting rod 43 just falls, the teeth of the third gear 35 will contact the connecting rod 43 again, and use the power of the gear rotation to lift the connecting rod 43 again, and repeat this cycle, so that the filter barrel 40 connected to the connecting rod 43 also vibrates up and down. The process of meshing, disengagement and re-contact between the gear and the rack is utilized to convert the rotational power of the pumping mechanism into the up and down vibration action of the filter barrel 40, so that the aquatic plants attached to the filter barrel 40 can be shaken off during the continuous vibration process, thereby ensuring the unobstructed filter holes 401 on the filter barrel 40, ensuring that the lake water sample can be smoothly extracted by the pumping mechanism through the filter holes 401, thereby realizing the function of the entire equipment to continuously and effectively collect lake water samples for water quality monitoring in a lake environment with lush aquatic plants.

[0052] As a preferred embodiment, a chamber is provided inside the carrier 10, and the displacement mechanism includes a fourth rotating shaft 541, an impeller shaft 51, a first bevel gear 53 and a second bevel gear 54 matched with the first bevel gear 53, both ends of the fourth rotating shaft 541 are respectively connected to the inner wall of the chamber, the second bevel gear 54 is sleeved on the fourth rotating shaft 541, and a collision rod 56 made of elastic material is also provided on the inner wall of the chamber, and a protrusion 55 that can produce motion interference with the collision rod 56 is provided on the second bevel gear 54; the axis of the second bevel gear 54 is perpendicular to the axis of the first bevel gear 53; the first bevel gear 53 It is fixedly sleeved on the outer edge of the impeller shaft 51, one end of the impeller shaft 51 is movably connected to the inner wall of the chamber, and the other end of the impeller shaft 51 extends to the inside of the water supply pipe 57. An impeller 50 is provided on the end of the impeller shaft 51 inside the water supply pipe 57; the axis of the impeller shaft 51 coincides with the axis of the water pipe 20; when the lake water sample flows from the water pipe 20 to the water supply pipe 57, the impeller 50 can be driven to drive the first bevel gear 53, so that the protrusion 55 on the second bevel gear 54 continuously touches the collision rod 56, causing the collision rod 56 to produce elastic deformation, and the kinetic energy of the elastic deformation causes the support platform 10 to vibrate, thereby achieving displacement on the lake surface.

[0053] The displacement mechanism is located in the internal chamber of the supporting platform 10. When the water pumping mechanism extracts lake water samples and makes the liquid in the water pipe 20 flow, the water flows into the water supply pipe 57 and drives the impeller 50 at the end of the impeller shaft 51 to rotate at a high speed. The impeller 50 drives the first bevel gear 53 fixedly connected thereto to rotate. Since the first bevel gear 53 is meshed with the second bevel gear 54 mounted on the fourth rotating shaft 541 and the axes of the two are perpendicular, the rotation of the first bevel gear 53 will drive the second bevel gear 54 to rotate synchronously, and the protrusion 55 provided on the second bevel gear 54 will continuously hit the collision rod 56 made of elastic material (such as rubber) as it rotates. After the collision, the collision rod 56 generates elastic deformation and stores energy, and then releases this part of energy, causing the supporting platform 10 to vibrate. This vibration is transmitted to the entire water quality monitoring equipment, thereby causing the equipment to be displaced on the lake surface, thereby realizing the collection of lake water samples in different areas of the lake, and effectively improving the comprehensiveness of the monitoring data.

[0054] In order to achieve a better displacement effect, the collision rod 56 should be made of a rubber material with a high elastic modulus and good fatigue resistance. The shape of the bump 55 can be designed to be hemispherical or trapezoidal. The hemispherical bump 55 can provide a more uniform pressure distribution during collision and reduce local stress concentration. The trapezoidal bump 55 can produce different impact force effects when impacted at different angles, increasing the diversity of displacement. The material of the bump 55 should have high hardness and wear resistance, such as hardened steel or cemented carbide. Its distribution position on the second bevel gear 54 should be asymmetrical and evenly spaced, so that during the rotation process, the force on the collision rod 56 can form a staggered change in time and space, thereby prompting the support platform 10 to produce more complex and effective vibrations, driving the equipment to achieve multi-directional and multi-amplitude displacement on the lake surface.

[0055] As a preferred embodiment, a cavity is provided inside the monitoring head 14, and the water outlet mechanism includes a first motor 143 and a piston rod 144 provided on the monitoring head 14, one end of the piston rod 144 is connected to the first motor 143, and the other end of the piston rod 144 is provided with a piston plate 145, and the piston plate 145 is provided with a check mechanism for preventing the lake water sample from flowing back to the water supply pipe 57.

[0056] The water outlet mechanism mainly relies on the piston plate 145, the opening, the check mechanism, the first motor 143, the piston rod 144 and the drain pipe 142 to work together to realize its function. Initially, the piston plate 145 fits tightly to the bottom of the monitoring head 14, and the lake water sample can smoothly enter the inside of the monitoring head 14 through the opening on the piston plate 145 through the water pipe 20 and the water supply pipe 57. This is due to the action of the check mechanism (one-way valve) at the opening, which effectively prevents the backflow of the lake water sample and ensures that the lake water sample is continuously accumulated in the monitoring head 14. When the amount of lake water sample reaches the set capacity threshold, the first motor 143 starts to operate, driving the piston rod 144 to move, and then driving the piston plate 145 to move upward. In the process of the piston plate 145 moving upward, the space inside the monitoring head 14 is continuously compressed and reduced, and the lake water will be discharged through the drain pipe 142 above the monitoring head 14 that is connected to the outside world under the action of pressure, thus completing the discharge process of the detected lake water sample, ensuring that the entire monitoring process can be circulated, and avoiding interference of sample residues on subsequent detection.

[0057] As a preferred embodiment, the check mechanism includes an opening provided on the piston plate 145, in which a fixed block 60, a movable block 61 and a second spring 62 are provided, one end of the second spring 62 is connected to the inner wall of the fixed block 60, and the other end of the second spring 62 is connected to the movable block 61. When the second spring 62 is in the initial state, the movable block 61 can close the water flow channel in the opening.

[0058] In the initial state, the second spring 62 is in the initial position, and the moving block 61 tightly closes the water flow channel at the opening, which can effectively block the water flow from passing through and prevent backflow. When the water pump mechanism starts to work, the water flow in the water supply pipe 57 will impact the moving block 61. As the water pressure increases and exceeds the elastic force of the second spring 62, the moving block 61 will start to move under the action of the water pressure. Correspondingly, the originally closed water flow channel will be opened, so that the water flow can smoothly enter the monitoring head 14 through the opening, and the lake water sample can be normally transported to the monitoring head 14. When the water pump mechanism stops working and the water flow pressure in the water supply pipe 57 disappears, the second spring 62 starts to reset by its own elastic restoring force, driving the moving block 61 back to the initial position and closing the water flow channel again. Through such a working process, the check mechanism can accurately control the unidirectional flow of water, ensuring that the lake water sample will only enter the monitoring head 14 from the water supply pipe 57 without backflow.

[0059] A detection method, using the above-mentioned lake water quality monitoring equipment to perform water quality monitoring, the steps are as follows:

[0060] S1: Equipment placement and preparation

[0061] Place the lake water quality monitoring equipment on the surface of the lake to be tested, and ensure that the equipment can float stably on the water surface through the connecting rod 11 and the buoy 12 on the periphery of the supporting platform 10, so that the water pipe 20, water supply pipe 57 and other components are in a normal initial state, and prepare for the collection and testing of lake water samples.

[0062] S2: Lake water sample collection starts

[0063] The water pumping mechanism is started, and the motor in the water pumping mechanism drives the relevant gears to operate, generating negative pressure in the cavity 31 of the pump body 30, and the lake water sample is extracted from the water suction head 34 through the water pipe 20. During this process, the filtering mechanism on the outside of the water pipe 20 begins to function, and the filter barrel 40 isolates the aquatic plants. At the same time, with the help of the linkage with the water pumping mechanism (such as driving the filter barrel 40 to vibrate up and down through the cooperation of the third gear 35 and the connecting rod 43), the aquatic plants attached to the filter barrel 40 are shaken off, ensuring that the lake water sample can continuously and smoothly enter the water pipe 20 through the filter hole 401, and then be transported to the water supply pipe 57 in the supporting platform 10.

[0064] S3: Trigger displacement to achieve multi-point sampling

[0065] As the lake water sample flows in the water pipe 20 and enters the water supply pipe 57, the water flow drives the impeller 50 at the end of the impeller shaft 51 in the water supply pipe 57 to rotate. Through the transmission of the first bevel gear 53 and the second bevel gear 54 and the interaction between the protrusion 55 on the second bevel gear 54 and the collision rod 56, the supporting platform 10 vibrates, driving the entire equipment to move on the lake surface, thereby realizing the collection of lake water samples from different areas of the lake, ensuring that the collected lake water samples are more representative and can fully reflect the overall water quality of the lake.

[0066] S4: Lake water sample testing

[0067] The collected lake water samples are transported to the inside of the monitoring head 14 on the supporting platform 10 through the water supply pipe 57, and the corresponding detection devices equipped in the monitoring head 14 are used to detect and analyze various water quality indicators (such as pH, dissolved oxygen, pollutant content, etc.) of the lake water samples to obtain water quality data.

[0068] S5: Lake water sample discharge and circulation testing

[0069] When the lake water sample in the monitoring head 14 is tested, the water outlet mechanism inside the monitoring head 14 is started, and the motor drives the piston rod 144 to drive the piston plate 145 to move, overcoming the spring force in the check mechanism to push the piston plate 145 upward, so that the internal space of the monitoring head 14 becomes smaller, and the lake water sample is discharged through the drainage pipe 142 above the monitoring head 14 that is connected to the outside world under pressure. After that, the equipment repeats the process from S2 to S5, continuously collects and tests lake water samples from different areas of the lake, and completes the dynamic monitoring of the lake water quality.

[0070] Embodiment 2:

[0071] On the basis of Example 1, a positioning rod 44 is provided on the fixing plate 21 of this embodiment, a groove matching the positioning rod 44 is provided on the connecting rod 43 , and an elastic member is provided at one end of the connecting rod 43 close to the fixing plate 21 .

[0072] The positioning rod 44 on the fixed plate 21 cooperates with the groove on the connecting rod 43 to play a positioning and guiding role, ensuring that the connecting rod 43 and the connected filter barrel 40 maintain a stable trajectory during movement. At the same time, an elastic member (such as a first spring 45) is provided at one end of the connecting rod 43 close to the fixed plate 21. When the connecting rod 43 moves under the action of the third gear 35, the elastic member can assist the connecting rod 43 in resetting and absorb the impact force during the movement of the filter barrel 40, preventing the components from being damaged due to excessive force, ensuring the stability and reliability of the operation of the filtering mechanism, and extending the service life of the equipment.

[0073] Embodiment 3:

[0074] Based on the above embodiment, the elastic member of this embodiment is a first spring 45, one end of the first spring 45 is connected to the fixed plate 21, and the other end of the first spring 45 is connected to the end of the connecting rod 43. When the first spring 45 is in the initial state, the guide rod 41 is located at the bottom of the guide groove 301.

[0075] The elastic member adopts a first spring 45, one end of which is connected to the fixed plate 21, and the other end is connected to the end of the connecting rod 43, and in the initial state, the guide rod 41 is located at the bottom of the guide groove 301. When the water pump mechanism works to drive the third gear 35 to rotate, the connecting rod 43 moves up and down, and the first spring 45 expands and contracts accordingly. The elastic potential energy of the spring can be converted into an auxiliary pulling force or thrust on the connecting rod 43, so that the meshing of the connecting rod 43 and the third gear 35 is smoother, the vibration effect of the filter barrel 40 is enhanced, and it is ensured that the water grass can fall off the filter barrel 40 more effectively. At the same time, the buffering effect of the spring also reduces the hard collision between components, reduces equipment wear, and improves the overall stability and durability of the equipment, so that the equipment can always maintain a good working condition during long-term operation and adapt to the complex and changeable lake environment.

[0076] As a preferred embodiment, the elastic material is rubber. The elastic material in the displacement mechanism is made of rubber to make the collision rod 56. When the bump 55 on the second bevel gear 54 continuously hits the rubber collision rod 56 as the gear rotates, the elastic deformation characteristics of the rubber can effectively absorb and buffer the impact force generated by the collision, and convert it into the vibration kinetic energy of the support platform 10, so that the displacement of the equipment on the lake surface is more stable and continuous. The selection of such elastic material can not only avoid component damage caused by rigid collision and extend the maintenance cycle of the equipment, but also enable the equipment to better adapt to the fluctuations of the lake surface and changes in water flow during the displacement process, thereby improving the ability of the equipment to collect lake water samples under different water conditions.

[0077] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them; although the present disclosure has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present disclosure. The following points need to be explained: In the accompanying drawings of the embodiments of the present invention, only the structures involved in the embodiments of the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the features in the same embodiment and different embodiments of the present invention can be combined with each other. The above is only an exemplary implementation of the present invention, and is not used to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the attached claims.

Claims

1. A lake water quality monitoring device, comprising a carrier (10) and a monitoring head (14), wherein the monitoring head (14) is arranged on the carrier (10), a connecting rod (11) and a buoy (12) are arranged on the periphery of the carrier (10), the buoy (12) is connected to the carrier (10) through the connecting rod (11), a water supply pipe (57) connected to the monitoring head (14) is arranged inside the carrier (10), and a water delivery pipe (20) connected to the water supply pipe (57) is arranged below the carrier (10), characterized in that: One end of the water pipe (20) is connected to the supporting platform (10), and the other end of the water pipe (20) is provided with a water pumping mechanism, and the water pumping mechanism is used to absorb the lake water sample through the water pipe (20) and transport it to the monitoring head (14); The outer side of the water delivery pipe (20) is also provided with a filter mechanism for isolating water weeds, and the water pumping mechanism can drive the filter mechanism to shake off the attached water weeds when pumping water; A displacement mechanism is provided inside the supporting platform (10), and the displacement mechanism can be triggered by the flow of liquid in the water pipe (20), so that the lake water quality monitoring equipment is displaced; The monitoring head (14) is also provided with a water outlet mechanism inside for discharging the lake water sample after the test.

2. A lake water quality monitoring device according to claim 1, characterized in that: The water pump mechanism comprises a pump body (30), a cavity (31) is provided inside the pump body (30), one end of the cavity (31) is connected to the water delivery pipe (20), and the other end of the cavity (31) is provided with a water suction head (34) connected to the cavity (31); The pump body (30) is provided with a first gear (32), a second gear (33), a first rotating shaft (321) and a second rotating shaft (331). The two ends of the first rotating shaft (321) are respectively connected to the inner wall of the cavity (31), and the two ends of the second rotating shaft (331) are also respectively connected to the inner wall of the cavity (31). The first gear (32) is sleeved on the outer edge of the first rotating shaft (321), and the second gear (33) is sleeved on the outer edge of the second rotating shaft (331). The first gear (32) is meshed with the second gear (33). A first motor (143) is provided on the outer side of the pump body (30). The rotating shaft of the first motor (143) passes through the pump body (30) and is fixedly connected to the first rotating shaft (321) for driving the first gear (32) to rotate.

3. A lake water quality monitoring device according to claim 2, characterized in that: A fixing plate (21) is provided on the outer wall of the water delivery pipe (20), and a guide groove (301) is provided on the pump body (30); The filtering mechanism comprises a filter barrel (40) disposed outside the pump body (30) and accommodating the pump body (30), a plurality of filter holes (401) being disposed on the side wall and the bottom plate of the filter barrel (40), a guide rod (41) being disposed on the filter barrel (40), one end of the guide rod (41) being connected to the inner wall of the filter barrel (40), and the other end of the guide rod (41) being disposed with a protrusion matching the guide groove (301); A straight rod (42) is also provided on the inner wall of the filter barrel (40), one end of the straight rod (42) is connected to the inner wall of the filter barrel (40), and the other end of the straight rod (42) is connected to a connecting rod (43), and a rack segment (431) is provided on the connecting rod (43); A third gear (35) and a third rotating shaft matching the rack segment (431) are provided on the outside of the pump body (30); the third rotating shaft passes through the pump body (30) and is fixedly connected to the first rotating shaft (321); when the second gear (33) rotates, the third gear (35) and the rack segment (431) can drive the filter barrel (40) to move parallel to the axis of the water pipe (20) to shake off the waterweed attached to the filter barrel (40).

4. A lake water quality monitoring device according to claim 3, characterized in that: A chamber is provided inside the support platform (10); the displacement mechanism comprises a fourth rotating shaft (541) arranged in the chamber, an impeller shaft (51), a first bevel gear (53) and a second bevel gear (54) matched with the first bevel gear (53); two ends of the fourth rotating shaft (541) are respectively connected to the inner wall of the chamber; the second bevel gear (54) is sleeved on the fourth rotating shaft (541); a collision rod (56) made of elastic material is also provided on the inner wall of the chamber; and a protrusion (55) capable of generating motion interference with the collision rod (56) is provided on the second bevel gear (54); The axis of the second bevel gear (54) is perpendicular to the axis of the first bevel gear (53); the first bevel gear (53) is fixedly sleeved on the outer edge of the impeller shaft (51); one end of the impeller shaft (51) is movably connected to the inner wall of the chamber; the other end of the impeller shaft (51) extends into the interior of the water supply pipe (57); an impeller (50) is provided on the end of the impeller shaft (51) inside the water supply pipe (57); the axis of the impeller shaft (51) coincides with the axis of the water supply pipe (20); when the lake water sample flows from the water supply pipe (20) to the water supply pipe (57), the impeller (50) can be driven to drive the first bevel gear (53), so that the protrusion (55) on the second bevel gear (54) continuously touches the collision rod (56), so that the collision rod (56) generates elastic deformation, and the kinetic energy of the elastic deformation causes the support platform (10) to vibrate, thereby achieving displacement on the lake surface.

5. A lake water quality monitoring device according to claim 4, characterized in that: The monitoring head (14) is provided with a cavity inside, and the water outlet mechanism comprises a first motor (143) and a piston rod (144) provided on the monitoring head (14), one end of the piston rod (144) is connected to the first motor (143), and the other end of the piston rod (144) is provided with a piston plate (145), and the piston plate (145) is provided with a non-return mechanism for preventing the lake water sample from flowing back to the water supply pipe (57).

6. A lake water quality monitoring device according to claim 5, characterized in that: The fixing plate (21) is provided with a positioning rod (44), the connecting rod (43) is provided with a groove matching the positioning rod (44), and an elastic member is provided at one end of the connecting rod (43) close to the fixing plate (21).

7. A lake water quality monitoring device according to claim 5, characterized in that: The non-return mechanism comprises an opening provided on a piston plate (145), wherein a fixed block (60), a movable block (61) and a second spring (62) are provided in the opening, wherein one end of the second spring (62) is connected to an inner wall of the fixed block (60), and the other end of the second spring (62) is connected to the movable block (61), and when the second spring (62) is in an initial state, the movable block (61) can close a water flow channel in the opening.

8. A lake water quality monitoring device according to claim 6, characterized in that: The elastic member is a first spring (45), one end of the first spring (45) is connected to the fixing plate (21), and the other end of the first spring (45) is connected to the end of the connecting rod (43), and when the first spring (45) is in an initial state, the guide rod (41) is located at the bottom of the guide groove (301).

9. A lake water quality monitoring device according to claim 4, characterized in that: The elastic material is rubber.

10. A monitoring method, using the lake water quality monitoring device as claimed in claim 5 to monitor water quality, characterized in that: S1, equipment preparation: placing the lake water quality monitoring equipment with the connecting rod (11) and the buoy (12) on the lake surface, and ensuring that the initial status of each component is normal; S2, start collection: start the water pump mechanism, the motor drives the gear to generate negative pressure in the pump body (30), the lake water sample passes through the water suction head (34) and the water pipe (20), the filter barrel (40) isolates the aquatic plants and drives the attached aquatic plants to be shaken off, and the lake water sample passes through the filter hole (401) and enters the water supply pipe (57); S3, multi-point sampling: the water flow of the water pipe (20) drives the impeller (50) to rotate, and through gear transmission and the action of the protrusion (55) and the collision rod (56), the support platform (10) vibrates to cause the device to move, and water samples from different areas are collected; S4, water sample detection: lake water samples enter the monitoring head (14), and the internal detection device analyzes various water quality indicators to obtain data; S5, drainage cycle: after detection, the water discharge mechanism is started, the motor drives the piston rod (144) to drive the piston plate (145) to discharge the lake water sample, and the device repeats steps S2-S5 for continuous monitoring.

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