Water environment water quality monitoring and sampling device for water pollution tracing based on multispectral unmanned aerial vehicle

Abstract

The invention relates to the technical field of water body sampling, in particular to a water environment water quality monitoring and sampling device for water body pollution tracing based on a multispectral unmanned aerial vehicle, which comprises an aircraft, a quantitative sampling device arranged below the aircraft and a recovery device for collecting a sampled water body, the quantitative sampling device comprises a sampling barrel, an upper floating part arranged above the sampling barrel, a rotating ring rotating along with the movement of the upper floating part, and a mounting part arranged at the top end of the butt joint part. According to the water environment water quality monitoring and sampling device for water pollution tracing based on the multispectral unmanned aerial vehicle, after the bottom of the sampling barrel moves downwards into the outer sleeve funnel along with the aircraft, a plate surface convex pipe jacks up the position of a liquid blocking plug, so that a collected water sample is poured into a sampling test tube, manual intervention is reduced, and meanwhile, the sampling efficiency is improved. The next round of water body collection work can be quickly carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of water body sampling, and in particular to a water environment water quality monitoring sampling device for water body pollution tracing based on a multi-spectral unmanned aerial vehicle. Background Art

[0002] The water pollution tracing, water environment and water quality monitoring sampling device based on multispectral drones integrates advanced remote sensing technology and drone platforms. The device is equipped with a multispectral imager to collect images and spectral information of river water bodies. Multispectral data has the characteristics of "map and spectrum in one", which can quickly monitor water pollutants and pollution levels, and accurately locate polluted areas, providing an efficient and convenient solution for water pollution tracing and water environment and water quality monitoring.

[0003] The patent with application number CN202322406214.6 discloses a UAV water quality monitoring device and a UAV, including a UAV main body, a lighting device is fixedly connected to the middle of the upper end of the UAV main body, support legs are fixedly connected to the four corners of the lower end of the UAV main body, wings are fixedly connected to the four corners of the upper end of the UAV main body, a mounting block is fixedly connected to the middle of the lower end of the UAV main body, an assembly structure is detachably connected to the lower end of the mounting block, and a lifting structure is fixedly connected to the lower end of the assembly structure. By setting the assembly structure and the lifting structure, the sampling equipment is connected to the UAV for easy installation and disassembly, and the use of the UAV is not affected after the sampling equipment is removed, thereby reducing the limitations of the use of the UAV.

[0004] Existing drone-based water quality monitoring sampling devices have significant limitations. Most devices lack autonomous quantitative collection capabilities and need to rely on external drive equipment or manual operation to adjust the sampling volume, which increases operational complexity and economic costs. At the same time, manual intervention is frequent in the sampling process, especially when unloading and transferring water samples from drones to storage containers. This is time-consuming and causes the drone to be unable to continue sampling, seriously affecting efficiency, especially in large-scale collection tasks.

[0005] In view of this, we propose a water environment and water quality monitoring sampling device based on multi-spectral drone for water pollution tracing. Summary of the invention

[0006] The purpose of the present invention is to provide a water environment water quality monitoring sampling device for water pollution tracing based on a multi-spectral unmanned aerial vehicle to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A water environment water quality monitoring sampling device for water pollution tracing based on a multi-spectral UAV, comprising an aircraft, a quantitative sampling device arranged under the aircraft, and a recovery device for collecting sampled water; The quantitative sampling device comprises a sampling tube, a floating part arranged above the sampling tube, a rotating ring that rotates as the floating part moves, and a mounting part arranged at the top of the docking part; The sampling cylinder comprises a sampling cylinder body, a limiting ring arranged on the outer wall of the sampling cylinder body, a plurality of spacers regularly distributed on the inner wall of the sampling cylinder body, an upper convex tube arranged between two adjacent spacers, a liquid blocking plug slidably connected to the inside of the upper convex tube, a first pressure spring that pushes the liquid blocking plug downward by its own elastic force, and a docking portion arranged on the top surface of the sampling cylinder body; The docking portion includes a docking tube body, a fixed convex plate arranged at the end of a convex rod at the top of the docking tube body, and a sliding convex plate sliding on the outside of the convex rod at the top of the docking tube body; The floating part includes an outer sleeve, a plurality of inner protrusions regularly distributed on the inner wall of the outer sleeve, a floating plate sleeved on the outer side of the outer sleeve, and a second pressure spring arranged on the top end of the outer sleeve; The mounting portion includes a counterweight plate and a plurality of position-limiting protrusions regularly distributed in the groove of the inner ring wall of the counterweight plate; The recovery device comprises a fixed chassis, a rod end circular plate arranged at the top of the central rod of the fixed chassis, a plurality of plate surface convex tubes regularly distributed on the top surface of the rod end circular plate, a sampling test tube arranged below the plate surface convex tube and a jacket funnel sleeved on the outer side of the rod end circular plate.

[0008] In the technical solution of the present invention, the outer wall of the sampling cylinder is provided with a plurality of regularly distributed water inlet holes which penetrate inside and outside above the limiting ring, and glass plates are bonded in the plurality of grooves on the outer wall of the sampling cylinder. The limiting ring is welded and fixed to the outer wall of the sampling cylinder, and the spacer plate is clamped and fixed to the inside of the sampling cylinder.

[0009] In the technical solution of the present invention, a circular plate is clamped on the inner wall of the sampling cylinder above the bottom cylinder mouth, the upper convex tube is clamped and fixed on the top surface of the circular plate at the bottom of the sampling cylinder, and a number of regularly distributed wall grooves are opened on the tube wall of the upper convex tube. One end of the first pressure spring is adhered to the top surface of the liquid blocking plug, and the other end is adhered to the inner wall of the upper convex tube.

[0010] In the technical solution of the present invention, the butt joint body is fixedly connected to the top surface of the sampling cylinder by bolts, a tube wall ring is clamped on the outer tube wall of the butt joint body, and the fixed convex plate is clamped and fixed at the end position of the convex rod on the top of the butt joint body.

[0011] In the technical solution of the present invention, the outer sleeve is sleeved on the outside of the rotating ring, and the outer sleeve together with the circular tube at the top is slidably connected to the outside of the docking tube body, the inner protrusion is integrally formed with the outer sleeve, and a clamping wheel is fixedly connected to the outer wall of the circular tube at the top of the outer sleeve by a bayonet pin.

[0012] In the technical solution of the present invention, the floating plate is sleeved on the outer side wall of the clamping wheel, and the upper and lower ends of the second pressure spring are respectively welded and fixed to the bottom surface of the tube wall ring body and the top surface of the clamping wheel.

[0013] In the technical solution of the present invention, the rotating ring is slidably connected to the inside of the limiting ring, and a docking hole that penetrates inside and outside and is adapted to the size of the water inlet hole is opened on the outer ring wall of the rotating ring, and a ring wall convex groove is opened on the outer ring wall of the rotating ring above the docking hole.

[0014] In the technical solution of the present invention, a hand-held rod is clamped and fixed at the center position of the top surface of the counterweight plate, and the hand-held rod is fixedly connected to the platform of the bottom bracket of the aircraft through a rope at the top end. The longitudinal cross-section of the limiting protrusion is a right-angled trapezoid, and the limiting protrusion is slidably connected to the groove of the inner ring wall of the counterweight plate. A third pressure spring is welded on the outer wall of the limiting protrusion, and the other end of the third pressure spring is welded to the groove of the inner ring wall of the counterweight plate.

[0015] In the technical solution of the present invention, the rod end circular plate is clamped and fixed at the top position of the center rod of the fixed chassis, the plate surface convex tube and the rod end circular plate are integrally formed, the size of the plate surface convex tube corresponds to the position of the upper convex tube and the size is adapted, and a number of regularly distributed and internally and externally penetrating docking tube grooves are opened on the tube wall of the plate surface convex tube.

[0016] In the technical solution of the present invention, the sampling test tube is clamped and fixed on the bottom surface of the rod end circular plate, and the outer sleeve funnel is clamped and fixed on the outer side wall of the rod end circular plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In the water environment and water quality monitoring sampling device for water pollution tracing based on multispectral drones, when the quantitative sampling device is dropped into the water by the aircraft, the floating part will drive the rotating ring to rotate, and allow part of the water sample to be poured into the interior of the sampling cylinder through one of the water inlet holes, and after the quantitative sampling device leaves the water surface, the relative positions of the docking hole and the water inlet hole are changed again, thereby completing multiple quantitative collection of water bodies in different waters without external driving equipment.

[0018] 2. The water environment and water quality monitoring sampling device for water pollution tracing based on multi-spectral drones, after the bottom of the sampling tube moves down into the interior of the outer jacket funnel as the aircraft moves down, the convex tube on the plate surface immediately pushes the position of the liquid blocking plug upward, and the collected water sample is poured into the interior of the sampling tube, which reduces manual intervention while enabling the next round of water collection work to be carried out quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the quantitative sampling device in the present invention; Figure 3 It is a structural schematic diagram of the sampling tube in the present invention; Figure 4 It is a schematic diagram of the cross-section structure of the sampling tube in the present invention; Figure 5 It is a structural schematic diagram of the docking part in the present invention; Figure 6 It is one of the structural schematic diagrams of the floating part in the present invention; Figure 7 This is the second structural schematic diagram of the floating part in the present invention; Figure 8 It is a schematic diagram of the structure of the rotating ring in the present invention; Fig. 9 It is a schematic cross-sectional view of the structure of the installation part in the present invention; Fig.10 It is a schematic cross-sectional view of the structure of the recovery device in the present invention; Fig.11 For the present invention Fig.10 A part of the enlarged schematic diagram; Description of reference numerals: 100. Aircraft; 200, quantitative sampling device; 210, sampling tube; 211, sampling tube body; 2110, water inlet hole; 212, glass plate; 213, limiting ring; 214, spacer plate; 215, upper convex tube; 2150, tube wall through groove; 216, liquid blocking plug; 217, first pressure spring; 218, docking part; 2180, docking tube body; 2181, tube wall ring body; 2182, fixed convex plate; 2183, sliding convex plate; 220, upper floating part; 221, outer sleeve; 222, inner convex block; 223, clamping wheel; 224, floating plate; 225, second pressure spring; 230, rotating ring; 2310, docking hole; 2311, ring wall convex groove; 240, mounting part; 241, counterweight plate; 242, hand-held rod; 243, limiting convex block; 244, third pressure spring; 300, recovery device; 310, fixed chassis; 320, rod end round plate; 330, plate surface convex tube; 331, butt joint tube groove; 340, sampling test tube; 350, outer jacket funnel. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. See also Figure 1-Figure 11 As shown, this embodiment provides a technical solution: A water environment water quality monitoring sampling device for water pollution tracing based on a multi-spectral UAV, comprising an aircraft 100, a quantitative sampling device 200 disposed under the aircraft 100, and a recovery device 300 for collecting sampled water; In this embodiment, Figure 2-Figure 4 As shown, the quantitative sampling device 200 includes a sampling tube 210, a floating portion 220 disposed above the sampling tube 210, a rotating ring 230 that rotates as the floating portion 220 moves, and a mounting portion 240 disposed at the top of the docking portion 218; Specifically, the sampling cylinder 210 includes a sampling cylinder body 211, a limiting ring 213 arranged on the outer wall of the sampling cylinder body 211, a plurality of spacer plates 214 regularly distributed on the inner wall of the sampling cylinder body 211, an upper convex tube 215 arranged between two adjacent spacer plates 214, a liquid blocking plug 216 slidably connected to the interior of the upper convex tube 215, a first pressure spring 217 that pushes the liquid blocking plug 216 downward by its own elastic force, and a docking portion 218 arranged on the top surface of the sampling cylinder body 211.

[0021] Furthermore, the outer wall of the sampling cylinder 211 is provided with a plurality of regularly distributed water inlet holes 2110 that penetrate inside and outside above the limiting ring 213, and glass plates 212 are adhered to a plurality of grooves on the outer wall of the sampling cylinder 211. The limiting ring 213 is welded and fixed to the outer wall of the sampling cylinder 211, and the partition plate 214 is clamped and fixed to the inside of the sampling cylinder 211.

[0022] Furthermore, a circular plate is clamped on the inner wall of the sampling cylinder 211 above the bottom cylinder mouth, and the upper convex tube 215 is clamped and fixed on the top surface of the bottom circular plate of the sampling cylinder 211. A plurality of regularly distributed wall through grooves 2150 are opened on the wall of the upper convex tube 215. One end of the first pressure spring 217 is adhered to the top surface of the liquid blocking plug 216, and the other end is adhered to the inner wall of the upper convex tube 215.

[0023] Furthermore, the sampling cylinder 211 is used to ensure the strength of the overall structure of the sampling cylinder 210, the water inlet hole 2110 is used to allow water to flow into the interior of the sampling cylinder 211, the glass plate 212 is used to facilitate operators to observe the liquid level of the collected water sample from the outside, the limit ring 213 is used to provide a rotation range for the rotating ring 230, and the spacer 214 is used to separate the space inside the sampling cylinder 211. After the position of the liquid blocking plug 216 is moved up, it is used to allow the water sample to flow out of the interior of the sampling cylinder 211 through the tube wall groove 2150, and the first pressure spring 217 pushes the liquid blocking plug 216 downward by its own elastic force.

[0024] In this embodiment, Figure 5 As shown, the docking portion 218 includes a docking tube body 2180, a fixed convex plate 2182 disposed at the end of the top convex rod of the docking tube body 2180, and a sliding convex plate 2183 sliding on the outside of the top convex rod of the docking tube body 2180; Specifically, the butt joint body 2180 is fixedly connected to the top surface of the sampling cylinder 211 by bolts, a tube wall ring body 2181 is clamped on the outer tube wall of the butt joint body 2180, and a fixing convex plate 2182 is clamped and fixed at the end position of the top convex rod of the butt joint body 2180.

[0025] Furthermore, the butt-jointed tube body 2180 is used to provide a fixed base point for the tube wall ring body 2181 and the fixed protruding plate 2182 , and the sliding protruding plate 2183 is used to cooperate with the mounting portion 240 , so that the sampling tube 210 can be quickly assembled and disassembled with the mounting portion 240 .

[0026] In this embodiment, Figure 6-Figure 7 As shown, the floating part 220 includes an outer sleeve 221, a plurality of inner protrusions 222 regularly distributed on the inner wall of the outer sleeve 221, a floating plate 224 sleeved on the outer side of the outer sleeve 221, and a second pressure spring 225 disposed on the top of the outer sleeve 221; Specifically, the outer sleeve 221 is sleeved on the outside of the rotating ring 230, and the outer sleeve 221 and the round tube at the top are slidably connected to the outside of the docking tube body 2180, the inner protrusion 222 is integrally formed with the outer sleeve 221, and the clamping wheel 223 is fixedly connected to the outer wall of the round tube at the top of the outer sleeve 221 through a pin.

[0027] Furthermore, the floating plate 224 is sleeved on the outer wall of the clamping wheel 223 , and the upper and lower ends of the second pressure spring 225 are respectively welded and fixed to the bottom surface of the tube wall ring body 2181 and the top surface of the clamping wheel 223 .

[0028] Furthermore, after the float 224 extends below the water surface, the buoyancy generated can drive the outer sleeve 221 and the inner protrusion 222 to move upward, and the second pressure spring 225 pushes the outer sleeve 221 to move downward through its own elastic force after the float 224 leaves the water surface, and the clamping wheel 223 is used to fix the float 224.

[0029] In this embodiment, Figure 8 As shown, the rotating ring 230 is slidably connected to the inside of the limiting ring 213, and a docking hole 2310 that runs through the inside and outside and matches the size of the water inlet hole 2110 is opened on the outer ring wall of the rotating ring 230, and a ring wall convex groove 2311 is opened on the outer ring wall of the rotating ring 230 above the docking hole 2310; Furthermore, the contact positions of the plurality of inner protrusions 222 with the groove wall of the annular wall protrusion groove 2311 on the rotating ring 230 are changed, and they move to the top of the arc groove of the annular wall protrusion groove 2311, thereby driving the rotating ring 230 to rotate as a whole, so that the docking hole 2310 corresponds to the position of one of the water inlet holes 2110, and the external water body is then poured into the area between the two partition plates 214 inside the sampling cylinder 211. When the sampling cylinder 210 leaves the water surface, the plurality of inner protrusions 222 move to the bottom end of the straight groove of the annular wall protrusion groove 2311 along with the outer sleeve 221, and the docking hole 2310 moves to the position between the two water inlet holes 2110.

[0030] In this embodiment, Figure 5-9 As shown, the mounting portion 240 includes a counterweight plate 241 and a plurality of position-limiting protrusions 243 regularly distributed in the inner ring wall groove of the counterweight plate 241; Specifically, a hand-held rod 242 is clamped and fixed at the center position of the top surface of the counterweight plate 241, and the hand-held rod 242 is fixedly connected to the platform of the bottom bracket of the aircraft 100 through a rope at the top. The longitudinal cross-section of the limiting protrusion 243 is a right-angled trapezoid, and the limiting protrusion 243 is slidably connected to the groove of the inner ring wall of the counterweight plate 241. A third pressure spring 244 is welded on the outer wall of the limiting protrusion 243, and the other end of the third pressure spring 244 is welded to the groove of the inner ring wall of the counterweight plate 241.

[0031] Furthermore, after the fixed protrusion 2182 in the docking part 218 is inserted into the bottom groove of the counterweight plate 241, it drives the position of the limiting protrusion 243 to shrink. When the fixed protrusion 2182 leaves the limiting protrusion 243, the limiting protrusion 243 moves to the bottom of the fixed protrusion 2182 under the elastic force of the third pressure spring 244, and then fixes the docking part 218 inside the counterweight plate 241. After the operator holds the docking part 218 and the hand-held rod 242, he lifts the docking part 218 as a whole to move the limiting protrusion 243 to the bottom of the sliding protrusion 2183, and then pulls down the docking part 218. The limiting protrusion 243 drives the sliding protrusion 2183 to move up together. Then, after the sliding protrusion 2183 conflicts with the fixed protrusion 2182, the limiting protrusion 243 shrinks under the guiding action of the sliding protrusion 2183, and the docking part 218 is separated from the counterweight plate 241.

[0032] In this embodiment, Figure 10-11 As shown, the recovery device 300 includes a fixed chassis 310, a rod end circular plate 320 disposed at the top of the center rod of the fixed chassis 310, a plurality of plate surface convex tubes 330 regularly distributed on the top surface of the rod end circular plate 320, a sampling test tube 340 disposed below the plate surface convex tube 330, and a jacket funnel 350 sleeved on the outside of the rod end circular plate 320; Specifically, the rod end circular plate 320 is clamped and fixed at the top position of the central rod of the fixed chassis 310, and the plate surface convex tube 330 is integrally formed with the rod end circular plate 320. The size of the plate surface convex tube 330 corresponds to the position of the upper convex tube 215 and the size is adapted. A number of regularly distributed connecting tube grooves 331 that penetrate inside and outside are opened on the tube wall of the plate surface convex tube 330.

[0033] Furthermore, the sampling test tube 340 is clamped and fixed on the bottom surface of the rod end circular plate 320 , and the outer sleeve funnel 350 is clamped and fixed on the outer side wall of the rod end circular plate 320 .

[0034] Furthermore, after collecting water samples from different waters inside the sampling tube 210, the aircraft 100 is controlled to move with the quantitative sampling device 200 to the top of the shore recovery device 300. After the sampling tube 210 descends to the inside of the outer sleeve funnel 350, the plate surface convex tube 330 will contact the bottom surface of the liquid blocking plug 216, and drive the position of the liquid blocking plug 216 to move upward inside the upper convex tube 215, allowing the water sample between the two adjacent partition plates 214 to flow into the interior of the sampling tube 340 through the tube wall groove 2150 and the docking tube groove 331. When the water environment water quality monitoring sampling device for water pollution tracing based on a multispectral UAV of the present invention is used, first, the operator controls the aircraft 100 to fly over the water area where water quality monitoring is required, and finds the area where sampling is required through the spectral images transmitted back by the multispectral camera on the aircraft 100; Next, the aircraft 100 is controlled to hover over the water area where sampling is required, and the quantitative sampling device 200 is controlled to descend on the water surface; After the sampling tube 210 goes below the water surface, the floating plate 224 in the floating part 220 moves upward under the action of buoyancy, driving the floating part 220 to move upward as a whole, thereby causing the outer sleeve 221 and the plurality of inner protrusions 222 inside to move upward; Subsequently, the contact positions of the inner protrusions 222 and the groove wall of the protruding groove 2311 on the ring wall of the rotating ring 230 are changed, which drives the rotating ring 230 to rotate as a whole, thereby making the docking hole 2310 correspond to the position of one of the water inlet holes 2110, and the external water is then poured into the area between the two partition plates 214 inside the sampling cylinder 211; Next, the aircraft 100 is controlled to rise. After the quantitative sampling device 200 leaves the water surface, the outer sleeve 221 moves downward as a whole under the action of its own gravity and the elastic force of the second pressure spring 225. The movement of the plurality of inner protrusions 222 drives the rotating ring 230 to rotate again. Repeat the above operation, after collecting water samples from different water areas in the sampling tube 210, control the aircraft 100 to move with the quantitative sampling device 200 to the top of the shore recovery device 300; After the sampling tube 210 descends to the interior of the outer funnel 350, the plate surface convex tube 330 contacts the bottom surface of the liquid blocking plug 216, and drives the position of the liquid blocking plug 216 to move upward inside the upper convex tube 215, so that the water sample between the two adjacent partition plates 214 flows into the interior of the sampling test tube 340 through the tube wall through groove 2150 and the butt tube groove 331; Afterwards, after the water sample in the sampling cylinder 211 is emptied, the aircraft 100 and the quantitative sampling device 200 are used to sample the water area again. The operator removes the sampling tube 340 from the rod end circular plate 320 and replaces it with a new sampling tube 340 . The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A water environment water quality monitoring sampling device for water pollution tracing based on a multi-spectral unmanned aerial vehicle, comprising an aircraft (100), a quantitative sampling device (200) arranged below the aircraft (100), and a recovery device (300) for collecting sampled water; Features: The quantitative sampling device (200) comprises a sampling tube (210), a floating portion (220) disposed above the sampling tube (210), a rotating ring (230) that rotates as the floating portion (220) moves, and a mounting portion (240) disposed at the top end of the docking portion (218); The sampling cylinder (210) comprises a sampling cylinder body (211), a limiting ring (213) arranged on the outer wall of the sampling cylinder body (211), a plurality of spacer plates (214) regularly distributed on the inner wall of the sampling cylinder body (211), an upper convex tube (215) arranged between two adjacent spacer plates (214), a liquid blocking plug (216) slidably connected to the interior of the upper convex tube (215), a first pressure spring (217) that pushes the liquid blocking plug (216) downward by its own elastic force, and a docking portion (218) arranged on the top surface of the sampling cylinder body (211); The docking portion (218) comprises a docking tube body (2180), a fixed convex plate (2182) arranged at the end of a convex rod at the top of the docking tube body (2180), and a sliding convex plate (2183) sliding on the outside of the convex rod at the top of the docking tube body (2180); The floating portion (220) comprises an outer sleeve (221), a plurality of inner protrusions (222) regularly distributed on the inner wall of the outer sleeve (221), a floating plate (224) sleeved on the outer side of the outer sleeve (221), and a second pressure spring (225) disposed on the top end of the outer sleeve (221); The mounting portion (240) comprises a counterweight plate (241) and a plurality of position-limiting protrusions (243) regularly distributed in a groove on an inner side of the counterweight plate (241); The recovery device (300) comprises a fixed chassis (310), a rod end circular plate (320) arranged at the top end of the central rod of the fixed chassis (310), a plurality of plate surface convex tubes (330) regularly distributed on the top surface of the rod end circular plate (320), a sampling test tube (340) arranged below the plate surface convex tube (330), and an outer sleeve funnel (350) sleeved on the outside of the rod end circular plate (320).

2. The water environment water quality monitoring and sampling device for water pollution tracing based on a multi-spectral drone according to claim 1 is characterized by: The outer wall of the sampling cylinder (211) is provided with a plurality of regularly distributed water inlet holes (2110) which are connected inside and outside above the limiting ring (213); glass plates (212) are adhered to the plurality of grooves on the outer wall of the sampling cylinder (211); the limiting ring (213) is welded and fixed to the outer wall of the sampling cylinder (211); and the partition plate (214) is clamped and fixed to the inside of the sampling cylinder (211).

3. The water environment water quality monitoring and sampling device for water pollution tracing based on a multi-spectral drone according to claim 1 is characterized by: The inner wall of the sampling cylinder (211) is clamped with a circular plate above the bottom cylinder mouth, and the upper convex tube (215) is clamped and fixed on the top surface of the bottom circular plate of the sampling cylinder (211). A plurality of regularly distributed tube wall through grooves (2150) are opened on the tube wall of the upper convex tube (215), and one end of the first pressure spring (217) is adhered to the top surface of the liquid blocking plug (216), and the other end is adhered to the inner wall of the upper convex tube (215).

4. The water environment water quality monitoring and sampling device for water pollution tracing based on a multi-spectral drone according to claim 1 is characterized by: The butt joint body (2180) is fixedly connected to the top surface of the sampling cylinder (211) by means of bolts, a tube wall ring body (2181) is clamped on the outer tube wall of the butt joint body (2180), and the fixing convex plate (2182) is clamped and fixed at the end position of the convex rod on the top of the butt joint body (2180).

5. The water environment water quality monitoring and sampling device for water pollution tracing based on a multi-spectral drone according to claim 1 is characterized by: The outer sleeve (221) is sleeved on the outside of the rotating ring (230), and the outer sleeve (221) and the circular tube at the top are slidably connected to the outside of the butt-jointed tube body (2180). The inner convex block (222) is integrally formed with the outer sleeve (221), and a clamping wheel (223) is fixedly connected to the outer wall of the circular tube at the top of the outer sleeve (221) via a bayonet.

6. The water environment water quality monitoring and sampling device for water pollution tracing based on a multi-spectral drone according to claim 5 is characterized by: The floating plate (224) is sleeved on the outer wall of the clamping wheel (223), and the upper and lower ends of the second pressure spring (225) are respectively welded and fixed to the bottom surface of the tube wall ring body (2181) and the top surface of the clamping wheel (223).

7. The water environment water quality monitoring and sampling device for water pollution tracing based on a multi-spectral drone according to claim 2 is characterized by: The rotating ring (230) is slidably connected to the interior of the limiting ring (213); a docking hole (2310) which is through-and-through and matches the size of the water inlet hole (2110) is provided on the outer ring wall of the rotating ring (230); and a ring wall convex groove (2311) is provided on the outer ring wall of the rotating ring (230) above the docking hole (2310).

8. The water environment water quality monitoring and sampling device for water pollution tracing based on a multi-spectral drone according to claim 1 is characterized by: A hand-held rod (242) is clamped and fixed at the center position of the top surface of the counterweight plate (241); the hand-held rod (242) is fixedly connected to the platform of the bottom bracket of the aircraft (100) via a rope at the top; the longitudinal section of the limiting protrusion (243) is a right-angled trapezoid; the limiting protrusion (243) is slidably connected to the groove of the inner ring wall of the counterweight plate (241); a third pressure spring (244) is welded to the outer wall of the limiting protrusion (243); the other end of the third pressure spring (244) is welded to the groove of the inner ring wall of the counterweight plate (241).

9. The water environment water quality monitoring and sampling device for water pollution tracing based on a multi-spectral drone according to claim 1 is characterized by: The rod end circular plate (320) is clamped and fixed at the top position of the central rod of the fixed chassis (310); the plate surface convex tube (330) and the rod end circular plate (320) are integrally formed; the size of the plate surface convex tube (330) corresponds to the position of the upper convex tube (215) and the size is adapted; a plurality of regularly distributed butt joint tube grooves (331) that penetrate inside and outside are formed on the tube wall of the plate surface convex tube (330).

10. The water environment water quality monitoring and sampling device for water pollution tracing based on multi-spectral drone according to claim 1 is characterized by: The sampling test tube (340) is clamped and fixed on the bottom surface of the rod end circular plate (320), and the outer sleeve funnel (350) is clamped and fixed on the outer side wall of the rod end circular plate (320).

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