Sampling detection device for water quality detection

Abstract

The invention belongs to the technical field of water quality detection, and particularly relates to a sampling detection device for water quality detection, the sampling detection device comprises an unmanned aerial vehicle main body, one side of the lower end of the unmanned aerial vehicle main body is fixedly connected with a box body, one side of an inner cavity of the box body is rotatably provided with a winding and unwinding roller, and the winding and unwinding roller is wound with a rope; a supporting wheel is arranged on one side of an inner cavity of the box body, the rope is attached to the surface of the supporting wheel, a sampling barrel is fixedly connected to the end of the rope, a round through hole allowing the sampling barrel to penetrate through is formed in one side of the lower end of the box body, and a water quality detector is slidably connected to one side of the bottom of the inner cavity of the box body. By utilizing the water inlet auxiliary assembly, the situations that when the sampling barrel and the rope enter water, stems and leaves of emergent aquatic plants are wound on the sampling barrel and the rope, smooth diving of the sampling barrel is affected, a water inlet in the sampling barrel is covered, and the water collection effect is inconvenient are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of water quality detection, in particular to a sampling detection device for water quality detection. Background Art

[0002] Water quality sampling and testing is the basis for ensuring water resource security, protecting the ecological environment, supporting industrial production and scientific decision-making. Through regular water quality sampling and testing, water quality problems can be discovered in a timely manner and targeted measures can be taken to maintain human health, ecological balance and economic sustainable development.

[0003] Patent publication number CN115524163A discloses an intelligent sampling device for water quality testing, belonging to the technical field of intelligent sampling devices. The device comprises an unmanned aerial vehicle (UAV) main body, a fixed base connected to the bottom surface of the UAV main body, a limit assembly disposed within the base, and a submersible tube secured within the limit assembly; at least one chute is defined within the base, the limit assembly comprising a block slidably disposed within the chute, an elastic element fixedly disposed on the side of the block away from the submersible tube, and the other side of the elastic element fixedly disposed on the inner wall of the chute; at least one sampling assembly is secured within the submersible tube, the sampling assembly comprising a sampling tube; the submersible tube can be stored within the base via a storage assembly, the storage assembly comprising a storage rope disposed at one end of the submersible tube, the other end of the storage rope disposed within the base. By configuring the UAV main body, the sampling assembly can be used to perform sampling at different locations, thereby improving practicality.

[0004] However, the above technical solution still has the following deficiencies in practical application: In order to facilitate water quality sampling in rivers and lakes, drones are used to carry sampling tubes. When the drone arrives at the designated sampling location, the rope is unwound to allow the sampling tube to enter the water for sampling. Although automatic sampling can be achieved in this way, there may be densely grown emergent plants such as reeds and cattails on the water surface at the sampling location. When the sampling tube and rope enter the water, they may be entangled by the stems and leaves of the emergent plants, which will not only affect the smooth diving of the sampling tube, but also cause the water inlet on the sampling tube to be covered, thereby affecting the collection of water bodies. In addition, when the sampling location is changed to avoid the entanglement of the sampling tube by emergent plants, it will cause deviation from the original sampling location, thereby affecting the sampling test results. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art, the present invention proposes a sampling and detection device for water quality detection.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a sampling and detection device for water quality detection, comprising a drone body, a box body fixedly connected to the lower end of the drone body, a retractable roller rotatably provided on one side of the inner cavity of the box body, a rope wound around the retractable roller, a support wheel provided on one side of the inner cavity of the box body, the rope fits the surface of the support wheel, a sampling barrel is fixedly connected to the end of the rope, a circular through hole for passing the sampling barrel is provided on one side of the lower end of the box body, a water quality detector is slidably connected to one side of the inner cavity of the box body, a water injection port is provided on one side of the water quality detector, and a water inlet auxiliary component is also provided on the box body; The water inlet auxiliary component includes a fixed ring fixedly connected to the middle of the lower end surface of the box body, the axis of the fixed ring coincides with the axis of the circular through hole, and a plurality of adjusting rods are radially distributed and slidably connected to the fixed ring, one end of the adjusting rod is fixedly connected to a connecting column, and a winding roller is rotatably provided at one end of the inner cavity of the connecting column, and an insulating cloth is wrapped around the surface of the winding roller, and a strip through hole for allowing the insulating cloth to pass through is provided on the connecting column, and the insulating cloth passes through the strip through hole and is fixedly connected to one side of the connecting column on the other side.

[0007] Preferably, a motor 1 is fixedly connected to one side of the inner cavity of the box, and an output end of the motor 1 is fixedly connected to the retractable roller.

[0008] Preferably, a water inlet and a water outlet are respectively provided on one side of the upper end and one side of the lower end of the sampling tube, and solenoid valves are provided on the water inlet and the water outlet, and the solenoid valves are located in the part where the water inlet and the water outlet are in the inner cavity of the sampling tube.

[0009] Preferably, a threaded rod 2 is threadedly connected to one side of the bottom of the water quality detector, one end of the threaded rod 2 is rotatably set on the box body, a motor 3 is fixedly connected to one side of the bottom of the inner cavity of the box body, and the output end of the motor 3 is fixedly connected to one end of the threaded rod 2.

[0010] Preferably, a rotating ring is sleeved on one side of the outer ring of the fixed ring and rotatably connected, a connecting rod is rotatably provided on one end of the adjusting rod, one end of the connecting rod is rotatably provided on the rotating ring, an electric push rod is fixedly connected to one side of the fixed ring, and the piston end of the electric push rod is fixedly connected to one end of the adjusting rod.

[0011] Preferably, one end of the inner cavity of the connecting column is fixedly connected to a motor four, and the output end of the motor four is fixedly connected to one end of the winding roller.

[0012] Preferably, the box body is further provided with an emergent plant reinforcement component; The emergent plant reinforcement component includes a sliding rod fixedly connected to one side of the lower end surface of the box body, the sliding rod is slidably connected to a connecting rod, the four corners of the connecting rod are fixedly connected to a clamping rod 1, the four corners of the connecting rod are slidably connected to a clamping rod 2 through a sliding groove, and the adjacent clamping rods 1 and 2 are parallel to each other.

[0013] Preferably, the upper end of the clamping rod 2 is threadedly connected to the threaded rod 4, both ends of the threaded rod 4 are rotatably set on the connecting rod, and multiple motors 7 are fixedly connected to the connecting rod, and the output end of the motor 7 is fixedly connected to one end of the threaded rod 4. The threaded rod 1 is threadedly connected to one side of the connecting rod, and the upper end of the threaded rod 1 is rotatably set on the box body, and the motor 2 is fixedly connected to one side of the bottom of the inner cavity of the box body, and the output end of the motor 2 is fixedly connected to one end of the threaded rod 1.

[0014] Preferably, the connecting column is further provided with a cutting-type self-cleaning component; The cutting type self-cleaning component includes a scraper slidably connected to one side of the connecting column through a sliding groove, an arc-shaped slider is slidably connected to the scraper through the sliding groove, and an arc-shaped knife is fixedly connected to the lower end of the arc-shaped slider.

[0015] Preferably, one side of the scraper is threadedly connected to a threaded rod three, both ends of the threaded rod three are rotatably set on the connecting column, one side of the upper end of the inner cavity of the connecting column is fixedly connected to a motor five, the output end of the motor five is fixedly connected to one end of the threaded rod three, and a gear is rotatably set on one side of the upper end face of the scraper, the gear is engaged with the tooth block on the arc-shaped slider, and one side of the upper end face of the scraper is fixedly connected to a motor six, and the output end of the motor six is fixedly connected to the gear.

[0016] The beneficial effects of the present invention are as follows: 1. The sampling and detection device for water quality detection described in the present invention utilizes a water inlet auxiliary component. When the sampling tube enters the water, the emergent plants at the sampling location are first pushed away to the sides by using the connecting column and the insulating cloth, so that the insulating cloth and the connecting column form a rectangular cavity for the sampling tube to pass through. The sampling tube is then driven through the rectangular cavity into the water for sampling. This avoids the situation where the stems and leaves of the emergent plants are entangled in the sampling tube and the rope when the sampling tube and the rope enter the water, affecting the smooth diving of the sampling tube, and the water inlet on the sampling tube is covered, making it inconvenient to collect the water body.

[0017] 2. The sampling and detection device for water quality detection described in the present invention utilizes an emergent plant reinforcement component, which can reinforce the emergent plants after being pushed away by the isolation cloth under the action of clamping rods one and two, thereby preventing the emergent plants from swaying due to wind and contacting the sampling tube, thereby affecting the sampling work.

[0018] 3. The sampling and detection device for water quality detection described in the present invention, after the sampling work is completed, during the winding process of the isolation cloth, its surface will form a scrape with the edge of the upper strip through hole of the connecting column, so that impurities attached to the surface of the isolation cloth will fall off. At the same time, the impurities attached to the surface of the connecting column are scraped off by the cutting self-cleaning component, avoiding the situation where the overall weight of the drone body increases due to impurities adhering to the surfaces of the isolation cloth and the connecting column, thereby affecting its flight efficiency. Similarly, it also avoids the situation where impurities cause wear and corrosion to the isolation cloth and the connecting column, thereby affecting the subsequent use effects of the two. Moreover, when the scraper scrapes the impurities on the surface of the connecting column, the arc-shaped knife rotates back and forth and moves along the moving trajectory of the scraper. The arc-shaped knife has a cutting effect on the impurities, which can further promote the falling of impurities. At the same time, it also avoids the entanglement of emergent plants on the connecting column, thereby ensuring the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the internal three-dimensional structure of the box; Figure 3 It is a schematic diagram of the three-dimensional structure of the fixed ring; Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting rod; Figure 5 This is a schematic diagram of the three-dimensional structure of the water quality detector; Figure 6 1. It is a schematic diagram of the three-dimensional structure of the isolation cloth; Figure 7 yes Figure 6 A partial enlarged view of the middle A; Figure 8 yes Figure 6 A partial enlarged view of point B in the middle; Figure 9 This is a schematic diagram of the three-dimensional structure of the threaded rod; Figure 10 It is a schematic diagram of the three-dimensional structure of the winding roller.

[0021] In the figure: 1. UAV body; 2. Box; 3. Isolation cloth; 4. Retractable roller; 5. Motor 1; 6. Rope; 7. Support wheel; 8. Water quality detector; 9. Fixed ring; 10. Connecting column; 11. Rotating ring; 12. Connecting rod; 13. Adjusting rod; 14. Sampling tube; 15. Water inlet; 16. Water outlet; 17. Motor 2; 18. Threaded rod 1; 19. Sliding rod; 20. Connecting rod; 21. Clamping rod 1; 22. Clamping rod 2; 23. Motor 3; 24. Threaded rod 2; 25. Water inlet; 26. Electric push rod; 27. Scraper; 28. Curved knife; 29. Curved slider; 30. Motor 4; 31. Winding roller; 32. Motor 5; 33. Threaded rod 3; 34. Gear; 35. Motor 6; 36. Motor 7; 37. Threaded rod 4. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Please refer to Figures 1-10 The present invention provides a technical solution: a sampling and detection device for water quality detection, comprising a drone body 1, a box body 2 is fixedly connected to the lower end side of the drone body 1, a retractable roller 4 is rotatably provided on one side of the inner cavity of the box body 2, a rope 6 is wound around the retractable roller 4, a support wheel 7 is provided on one side of the inner cavity of the box body 2, the rope 6 is in contact with the surface of the support wheel 7, a sampling tube 14 is fixedly connected to the end of the rope 6, a circular through hole for the sampling tube 14 to pass through is provided on one side of the lower end of the box body 2, a water quality detector 8 is slidably connected to one side of the inner cavity bottom of the box body 2, a water injection port 25 is provided on one side of the water quality detector 8, and a water inlet auxiliary component is also provided on the box body 2; The water inlet auxiliary component includes a fixed ring 9 fixedly connected to the middle of the lower end surface of the box body 2, the axis of the fixed ring 9 coincides with the axis of the circular through hole, and a plurality of adjusting rods 13 are radially distributed and slidably connected to the fixed ring 9. One end of the adjusting rod 13 is fixedly connected to a connecting column 10, and a winding roller 31 is rotatably provided at one end of the inner cavity of the connecting column 10. An insulating cloth 3 is wound around the surface of the winding roller 31, and a strip through hole is provided on the connecting column 10 for allowing the insulating cloth 3 to pass through, and the insulating cloth 3 passes through the strip through hole and is fixedly connected to one side of the connecting column 10 on the other side.

[0024] In this embodiment, Figure 1-Figure 3 、 Figure 5-Figure 7 、 Figure 10 As shown, a motor 5 is fixedly connected to one side of the inner cavity of the box body 2, and the output end of the motor 5 is fixedly connected to the retracting roller 4.

[0025] The upper and lower ends of the sampling tube 14 are respectively provided with a water inlet 15 and a water outlet 16 , and both the water inlet 15 and the water outlet 16 are provided with solenoid valves, which are located in the part where the water inlet 15 and the water outlet 16 are in the inner cavity of the sampling tube 14 .

[0026] A threaded rod 24 is threadedly connected to one side of the bottom of the water quality detector 8, and one end of the threaded rod 24 is rotatably set on the box body 2. A motor 3 23 is fixedly connected to one side of the bottom of the inner cavity of the box body 2, and the output end of the motor 3 23 is fixedly connected to one end of the threaded rod 24.

[0027] A rotating ring 11 is sleeved on one side of the outer ring of the fixed ring 9 and is rotatably connected to it. A connecting rod 12 is rotatably set on one end of the adjusting rod 13. One end of the connecting rod 12 is rotatably set on the rotating ring 11. An electric push rod 26 is fixedly connected to one side of the fixed ring 9. The piston end of the electric push rod 26 is fixedly connected to one end of the adjusting rod 13.

[0028] One end of the inner cavity of the connecting column 10 is fixedly connected to a motor 4 30, and the output end of the motor 4 30 is fixedly connected to one end of the winding roller 31.

[0029] Specifically, in the prior art, in order to facilitate water quality sampling in rivers and lakes, a drone is used to carry a sampling tube 14. When the drone arrives at the designated sampling location, the rope 6 is unwound to allow the sampling tube 14 to enter the water for sampling. Although automatic sampling can be achieved in this way, there may be densely grown emergent plants such as reeds and cattails on the water surface at the sampling location. When the sampling tube 14 and the rope 6 enter the water, they may be entangled by the stems and leaves of the emergent plants, which not only affects the smooth diving of the sampling tube 14, but also causes the water inlet 15 on the sampling tube 14 to be covered, thereby affecting the collection of the water body. In addition, when the sampling location is changed to avoid the emergent plants from entangled in the sampling tube 14, it will cause deviation from the original sampling location, thereby causing a certain impact on the sampling detection results.

[0030] Therefore, in order to solve the above problems, when using this embodiment, the drone body 1 is controlled by a remote control device to make it fly on the water surface. This is a prior art and will not be described in detail here. When the drone body 1 arrives at the sampling location, if there are no emergent plants on the water surface of the sampling location that will affect the diving of the sampling tube 14, the motor 15 drives the reel-up roller 4 to rotate, unwinding the rope 6, so that the sampling tube 14 passes through the circular through hole at the bottom of the box 2 and enters the water. When the sampling tube 14 reaches the appropriate depth, the solenoid valve on the water inlet 15 is opened to allow water to flow into the sampling tube 14, and then the solenoid valve is closed and the rope 6 is reeled in, so that the sampling tube 14 is removed from the water and returned to the box. 2, when the sampling tube 14 is higher than the water inlet 25 of the water quality detector 8, the motor 3 23 drives the threaded rod 24 to rotate, causing the water quality detector 8 to slide horizontally, so that the water inlet 25 is below the water outlet 16, and then the solenoid valve at the water outlet 16 is opened, allowing the water in the sampling tube 14 to enter the detection area of the water quality detector 8 through the water inlet 25. The water quality detector 8 can then be used to detect the water quality and transmit the detection information to the control device, thereby realizing the sampling and detection of the water quality.

[0031] When there are relatively dense emergent plants growing on the water surface at the sampling location, the multiple connecting columns 10 are in a state of mutual contact in the initial state, and the isolation cloth 3 is wound on the winding roller 31. When the drone body 1 reaches above the water surface at the sampling location, the drone body 1 begins to descend. During its descent, the multiple connecting columns 10 will extend between the emergent plants, and then the electric push rod 26 will be used to drive the adjustment rod 13 on one side to slide on the fixed ring 9. Then, under the transmission of the rotating ring 11 and the connecting rod 12, the remaining adjustment rods 13 can also slide on the fixed ring 9 and at the same time move away from the axis of the fixed ring 9. At the same time, the motor 30 drives the winding roller 31 to rotate and unwind the isolation cloth 3. Then, the emergent plants at the sampling location will be blocked by the connecting columns. 10 moves and the isolation cloth 3 is unwound and pushed to the four sides until the isolation cloth 3 and the connecting column 10 form a rectangular cavity for the sampling tube 14 to pass through. At this time, the rope 6 is unwound again to allow it to enter the water. The isolation cloth 3 separates the emergent plants from the sampling tube 14, thereby avoiding the situation where the stems and leaves of the emergent plants are entangled in the sampling tube 14 and the rope 6 when the sampling tube 14 and the rope 6 enter the water, affecting the smooth diving of the sampling tube 14, and the water inlet 15 on the sampling tube 14 is covered, making it inconvenient to collect the effect of the water body.

[0032] In this embodiment, Figure 2 、 Figure 4 、 Figure 9 As shown, the box body 2 is also provided with an emergent plant reinforcement component; The emergent plant reinforcement component includes a sliding rod 19 fixedly connected to one side of the lower end surface of the box body 2, the sliding rod 19 is slidably connected to the connecting rod 20, the four corners of the connecting rod 20 are fixedly connected to the clamping rod 1 21, the four corners of the connecting rod 20 are slidably connected to the clamping rod 2 22 through the sliding groove, and the adjacent clamping rod 1 21 and clamping rod 2 22 are parallel to each other.

[0033] The upper end of the clamping rod 22 is threadedly connected to the threaded rod 4 37, and both ends of the threaded rod 4 37 are rotatably set on the connecting rod 20. A plurality of motors 7 36 are fixedly connected to the connecting rod 20, and the output end of the motor 7 36 is fixedly connected to one end of the threaded rod 4 37. A threaded rod 18 is threadedly connected to one side of the connecting rod 20, and the upper end of the threaded rod 18 is rotatably set on the box body 2. A motor 2 17 is fixedly connected to one side of the bottom of the inner cavity of the box body 2, and the output end of the motor 2 17 is fixedly connected to one end of the threaded rod 18.

[0034] Specifically, in the above embodiment, although the isolation cloth 3 can be used to push the emergent plants at the sampling site to the surrounding areas, in some cases, the emergent plants have a certain height, and in order to prevent the emergent plants from being caught in the propeller of the drone body 1, the drone body 1 needs to maintain a certain distance from the emergent plants, which may cause the connecting column 10 to be unable to contact the water surface, and the isolation cloth 3 will also be at a certain distance from the water surface. After the emergent plants are pushed away by the isolation cloth 3, the emergent plants are easily swayed by the wind and enter the rectangular cavity through the bottom of the isolation cloth 3, which will still cause the emergent plants to contact the sampling tube 14, affecting the sampling work; similarly, without affecting the propeller of the drone body 1, even if the connecting column 10 can contact the water surface, the emergent plants are also easily entered from above the isolation cloth 3 into the rectangular cavity due to the wind and contact the sampling tube 14.

[0035] Therefore, in order to solve the above problem, when the present embodiment is in use, after the isolation cloth 3 pushes the emergent plants away, the motor 2 17 is used to drive the threaded rod 18 to rotate, so that the connecting rod 20 is lowered. At this time, each isolation cloth 3 corresponds to a group of clamping rods 1 21 and clamping rods 2 22, and each group of clamping rods 1 21 and clamping rods 2 22 are parallel to the surface of an isolation cloth 3. After the clamping rods 1 21 and clamping rods 2 22 are lowered, the isolation cloth 3 will be between the clamping rods 1 21 and clamping rods 2 22. Since the height difference of the emergent plants of the same type in the same area of the water surface is not too much, the clamping rods 1 21 and clamping rods 2 22 are lowered to After reaching a certain height, the ends of a large number of emergent plants will be between the clamping rod 1 21 and the clamping rod 2 22. At this time, the threaded rod 4 37 is driven to rotate by the motor 7 36 to make the clamping rod 2 22 approach the clamping rod 1 21, so that the ends of a large number of emergent plants can be clamped, and the small number of emergent plants that are not clamped can be ignored. The density of a small number of emergent plants is low, and the impact on the sampling tube 14 is also small; thus, under the action of the clamping rod 1 21 and the clamping rod 2 22, the emergent plants pushed away by the isolation cloth 3 can be reinforced to prevent the emergent plants from swinging due to wind and contacting the sampling tube 14, thereby affecting the sampling work.

[0036] In this embodiment, Figure 8 and Figure 10 As shown, a cutting-type self-cleaning component is also provided on the connecting column 10; The cutting type self-cleaning component includes a scraper 27 slidably connected to one side of the connecting column 10 through a slide groove, and an arc-shaped slider 29 is slidably connected to the scraper 27 through the slide groove, and an arc-shaped knife 28 is fixedly connected to the lower end of the arc-shaped slider 29.

[0037] One side of the scraper 27 is threadedly connected to a threaded rod three 33, and both ends of the threaded rod three 33 are rotatably set on the connecting column 10. One side of the upper end of the inner cavity of the connecting column 10 is fixedly connected to a motor five 32, and the output end of the motor five 32 is fixedly connected to one end of the threaded rod three 33. A gear 34 is rotatably set on one side of the upper end surface of the scraper 27, and the gear 34 is engaged with the tooth block on the arc-shaped slider 29. One side of the upper end surface of the scraper 27 is fixedly connected to a motor six 35, and the output end of the motor six 35 is fixedly connected to the gear 34.

[0038] Specifically, in the above embodiment, the isolation cloth 3 and the connecting column 10 cooperate with each other to push the emergent plants away. However, since the emergent plants grow in a water environment, some impurities such as algae, mud and sand, and the remains of aquatic insects are usually attached to the surface of their stems and leaves. After the impurities combine with water, they will have a certain degree of adhesion. The isolation cloth 3 and the connecting column 10 will come into contact with the emergent plants during operation. Therefore, these impurities are easily attached to the surface of the isolation cloth 3 and the connecting column 10, which will not only increase the overall weight of the drone body 1 and affect its flight efficiency, but also when the impurities adhere to the surface of the isolation cloth 3 and the connecting column 10, they are likely to cause wear and corrosion to the isolation cloth 3 and the connecting column 10, thereby affecting the subsequent use effect. Therefore, in order to solve the above problems, when the present embodiment is in use, after the sampling work is completed, the isolation cloth 3 is wound on the winding roller 31 again. During the winding process, the surface of the isolation cloth 3 will scrape against the edge of the upper strip-shaped through hole of the connecting column 10, so that the impurities attached to the surface of the isolation cloth 3 fall off. At the same time, the motor five 32 drives the threaded rod three 33 to rotate, and the scraper 27 moves downward along the surface of the connecting column 10. The edge of the scraper 27 will scrape against the outer wall of the connecting column 10, thereby scraping off the impurities attached to the surface of the connecting column 10. In addition, during the scraping process, the motor six 35 can be used to drive the gear 34 to rotate back and forth, so that the arc-shaped slider 29 slides back and forth in the slide groove of the scraper 27. Then the arc-shaped slider 29 and the arc-shaped knife 28 perform a circular reciprocating motion, which has a cutting effect on the impurities, further promoting the removal of impurities. and falling, and at the same time, it also avoids the emergent plants from being entangled on the connecting column 10; thus, after the sampling work is completed, the surfaces of the isolation cloth 3 and the connecting column 10 can be scraped to make the impurities on the surfaces of the two fall off, avoiding the situation where the impurities adhere to the surfaces of the isolation cloth 3 and the connecting column 10, resulting in an increase in the overall weight of the drone body 1 and affecting its flight efficiency. Similarly, it also avoids the situation where impurities cause wear and corrosion to the isolation cloth 3 and the connecting column 10, affecting the subsequent use effects of the two. Moreover, when the scraper 27 scrapes the impurities on the surface of the connecting column 10, the arc knife 28 rotates back and forth and moves following the moving trajectory of the scraper 27. The arc knife 28 has a cutting effect on the impurities, which can further promote the falling of impurities. At the same time, it also avoids the emergent plants from being entangled on the connecting column 10, ensuring the cleaning effect.

[0039] Working principle: The drone body 1 is controlled by a remote control device to fly on the water surface. This is an existing technology and will not be described in detail here. When the drone body 1 arrives at the sampling location, if there are no emergent plants on the water surface of the sampling location that will affect the diving of the sampling tube 14, the motor 15 drives the retracting roller 4 to rotate, unwinds the rope 6, and allows the sampling tube 14 to pass through the circular through hole at the bottom of the box 2 and enter the water. When the sampling tube 14 reaches the appropriate depth, the solenoid valve on the water inlet 15 is opened to allow water to flow into the sampling tube 14, and then the solenoid valve is closed and the rope 6 is reeled to remove the sampling tube 14 from the water and return it to the box. 2, when the sampling tube 14 is higher than the water inlet 25 of the water quality detector 8, the motor 3 23 drives the threaded rod 24 to rotate, causing the water quality detector 8 to slide horizontally, so that the water inlet 25 is below the water outlet 16. The solenoid valve at the water outlet 16 is then opened, allowing the water in the sampling tube 14 to enter the detection area of the water quality detector 8 through the water inlet 25. The water quality can then be tested using the water quality detector 8, and the test information is transmitted to the control device, thereby achieving water quality sampling and testing. When the water surface at the sampling location has a relatively dense growth of emergent plants, the multiple connecting columns 10 in the initial state are in contact with each other, and the isolation cloth 3 is wound around the winding roller 31. When the drone body 1 reaches the water surface of the sampling location, the drone body 1 begins to descend. During the descent, multiple connecting columns 10 will extend between the emergent plants. Then, the electric push rod 26 will drive the adjusting rod 13 on one side to slide on the fixed ring 9. Then, under the transmission of the rotating ring 11 and the connecting rod 12, the remaining adjusting rods 13 will also slide on the fixed ring 9 and at the same time stay away from the axis of the fixed ring 9. At the same time, the motor 30 drives the winding roller 31 to rotate and unwind the isolation cloth 3. Then, the emergent plants at the sampling location will be affected by the connecting columns. 10 moves and the isolation cloth 3 is unwound and pushed to the four sides until the isolation cloth 3 and the connecting column 10 form a rectangular cavity for the sampling tube 14 to pass through. At this time, the rope 6 is unwound again to allow it to enter the water. The isolation cloth 3 separates the emergent plants from the sampling tube 14, thereby avoiding the situation where the stems and leaves of the emergent plants are entangled in the sampling tube 14 and the rope 6 when the sampling tube 14 and the rope 6 enter the water, affecting the smooth diving of the sampling tube 14, and the water inlet 15 on the sampling tube 14 is covered, making it inconvenient to collect the effect of the water body.After the isolation cloth 3 pushes the emergent plants away, the motor 2 17 is used to drive the threaded rod 18 to rotate, so that the connecting rod 20 is lowered. At this time, each isolation cloth 3 corresponds to a group of clamping rods 1 21 and clamping rods 2 22, and each group of clamping rods 1 21 and clamping rods 2 22 are parallel to the surface of an isolation cloth 3. After the clamping rods 1 21 and clamping rods 2 22 are lowered, the isolation cloth 3 will be between the clamping rods 1 21 and clamping rods 2 22. Since the height difference of the emergent plants of the same type in the same area of the water surface is not too much, after the clamping rods 1 21 and clamping rods 2 22 are lowered to a certain height, a large number of emergent plants The ends of the aquatic plants will be between the clamping rod 1 21 and the clamping rod 2 22. At this time, the motor 7 36 drives the threaded rod 4 37 to rotate, so that the clamping rod 2 22 is close to the clamping rod 1 21, so that a large number of the ends of the emergent aquatic plants can be clamped, and the small number of emergent aquatic plants that are not clamped can be ignored. The density of a small number of emergent aquatic plants is low, and the impact on the sampling tube 14 is also small; thus, under the action of the clamping rod 1 21 and the clamping rod 2 22, the emergent aquatic plants pushed away by the isolation cloth 3 can be reinforced to prevent the emergent aquatic plants from swinging due to wind and contacting the sampling tube 14, thereby affecting the sampling work. When the sampling work is completed, the isolation cloth 3 is rolled up on the winding roller 31 again. During the rolling process, the surface of the isolation cloth 3 will scrape against the edge of the upper strip-shaped through-hole of the connecting column 10, so that the impurities attached to the surface of the isolation cloth 3 fall off. At the same time, the motor five 32 drives the threaded rod three 33 to rotate, and the scraper 27 moves downward along the surface of the connecting column 10. The edge of the scraper 27 will scrape against the outer wall of the connecting column 10, thereby scraping off the impurities attached to the surface of the connecting column 10. In addition, during the scraping process, the motor six 35 can be used to drive the gear 34 to rotate back and forth, so that the arc-shaped slider 29 slides back and forth in the slide groove of the scraper 27. The arc-shaped slider 29 and the arc knife 28 perform a circular reciprocating motion, which has a cutting effect on the impurities, further promoting the falling of impurities, and at the same time, avoiding The emergent plants are wrapped around the connecting column 10; thus, after the sampling work is completed, the surfaces of the isolation cloth 3 and the connecting column 10 can be scraped to remove impurities on the surfaces of the two, thereby avoiding the situation where impurities adhere to the surfaces of the isolation cloth 3 and the connecting column 10, causing the overall weight of the drone body 1 to increase, thereby affecting its flight efficiency. Similarly, it also avoids the situation where impurities cause wear and corrosion to the isolation cloth 3 and the connecting column 10, thereby affecting the subsequent use effects of the two. Moreover, when the scraper 27 scrapes the impurities on the surface of the connecting column 10, the arc-shaped knife 28 rotates back and forth and moves along the moving trajectory of the scraper 27. The arc-shaped knife 28 has a cutting effect on the impurities, which can further promote the falling of impurities. At the same time, it also avoids the emergent plants from being wrapped around the connecting column 10, thereby ensuring the cleaning effect.

[0040] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling and detection device for water quality detection, comprising an unmanned aerial vehicle (UAV) body (1), characterized in that: The lower end of the drone body (1) is fixedly connected to a box (2), a retractable roller (4) is rotatably provided on one side of the inner cavity of the box (2), a rope (6) is wound around the retractable roller (4), a support wheel (7) is provided on one side of the inner cavity of the box (2), the rope (6) is in contact with the surface of the support wheel (7), and a sampling tube (14) is fixedly connected to the end of the rope (6), a circular through hole for the sampling tube (14) to pass through is provided on one side of the lower end of the box (2), a water quality detector (8) is slidably connected to one side of the inner cavity bottom of the box (2), a water injection port (25) is provided on one side of the water quality detector (8), and a water inlet auxiliary component is also provided on the box (2); The water inlet auxiliary component comprises a fixing ring (9) fixedly connected to the middle of the lower end surface of the box body (2), the axis of the fixing ring (9) coincides with the axis of the circular through hole, a plurality of adjusting rods (13) are radially distributed and slidably connected to the fixing ring (9), one end of the adjusting rod (13) is fixedly connected to a connecting column (10), one end of the inner cavity of the connecting column (10) is rotatably provided with a winding roller (31), the surface of the winding roller (31) is wound with an insulating cloth (3), the connecting column (10) is provided with a strip through hole for allowing the insulating cloth (3) to pass through, and the insulating cloth (3) passes through the strip through hole and is fixedly connected to one side of the connecting column (10) on the other side.

2. A sampling and detection device for water quality detection according to claim 1, characterized in that: A motor 1 (5) is fixedly connected to one side of the inner cavity of the box body (2), and an output end of the motor 1 (5) is fixedly connected to the retracting roller (4).

3. The sampling and detection device for water quality detection according to claim 1, characterized in that: A water inlet (15) and a water outlet (16) are respectively provided on one side of the upper end and one side of the lower end of the sampling cylinder (14). Solenoid valves are provided on both the water inlet (15) and the water outlet (16), and the solenoid valves are located at the portion of the water inlet (15) and the water outlet (16) that is located in the inner cavity of the sampling cylinder (14).

4. The sampling and detection device for water quality detection according to claim 1, characterized in that: One side of the bottom of the water quality detector (8) is threadedly connected to a second threaded rod (24), one end of which is rotatably arranged on the box body (2), and one side of the bottom of the inner cavity of the box body (2) is fixedly connected to a third motor (23), and the output end of the third motor (23) is fixedly connected to one end of the second threaded rod (24).

5. The sampling and detection device for water quality detection according to claim 1, characterized in that: A rotating ring (11) is sleeved on one side of the outer ring of the fixed ring (9) and is rotatably connected thereto. A connecting rod (12) is rotatably provided on one end of the adjusting rod (13). One end of the connecting rod (12) is rotatably provided on the rotating ring (11). An electric push rod (26) is fixedly connected to one side of the fixed ring (9). The piston end of the electric push rod (26) is fixedly connected to one end of the adjusting rod (13).

6. The sampling and detection device for water quality detection according to claim 1, characterized in that: One end of the inner cavity of the connecting column (10) is fixedly connected to a motor four (30), and the output end of the motor four (30) is fixedly connected to one end of the winding roller (31).

7. The sampling and detection device for water quality detection according to claim 1, characterized in that: The box body (2) is also provided with an emergent plant reinforcement component; The emergent plant reinforcement component includes a sliding rod (19) fixedly connected to one side of the lower end surface of the box body (2), the sliding rod (19) is slidably connected to a connecting rod (20), the four corners of the connecting rod (20) are fixedly connected to a clamping rod 1 (21), the four corners of the connecting rod (20) are slidably connected to a clamping rod 2 (22) through a sliding groove, and adjacent clamping rods 1 (21) and clamping rods 2 (22) are parallel to each other.

8. The sampling and detection device for water quality detection according to claim 7, characterized in that: The upper end of the clamping rod 2 (22) is threadedly connected to the threaded rod 4 (37), and both ends of the threaded rod 4 (37) are rotatably set on the connecting rod (20). The connecting rod (20) is fixedly connected with multiple motors 7 (36), and the output end of the motor 7 (36) is fixedly connected to one end of the threaded rod 4 (37). One side of the connecting rod (20) is threadedly connected to the threaded rod 1 (18), and the upper end of the threaded rod 1 (18) is rotatably set on the box body (2). The bottom side of the inner cavity of the box body (2) is fixedly connected to the motor 2 (17), and the output end of the motor 2 (17) is fixedly connected to one end of the threaded rod 1 (18).

9. The sampling and detection device for water quality detection according to claim 1, characterized in that: The connecting column (10) is also provided with a cutting-type self-cleaning component; The cutting-type self-cleaning assembly comprises a scraper (27) slidably connected to one side of the connecting column (10) via a sliding groove, an arc-shaped slider (29) slidably connected to the scraper (27) via the sliding groove, and an arc-shaped knife (28) is fixedly connected to the lower end of the arc-shaped slider (29).

10. The sampling and detection device for water quality detection according to claim 9, characterized in that: One side of the scraper (27) is threadedly connected to a threaded rod three (33), and both ends of the threaded rod three (33) are rotatably set on the connecting column (10). One side of the upper end of the inner cavity of the connecting column (10) is fixedly connected to a motor five (32), and the output end of the motor five (32) is fixedly connected to one end of the threaded rod three (33). One side of the upper end surface of the scraper (27) is rotatably provided with a gear (34), and the gear (34) is engaged with the tooth block on the arc-shaped slider (29). One side of the upper end surface of the scraper (27) is fixedly connected to a motor six (35), and the output end of the motor six (35) is fixedly connected to the gear (34).

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