A wetland water environment monitoring sampling device

Abstract

The application discloses a wetland water environment monitoring sampling device, which comprises a supporting frame, a floating assembly connected to the supporting frame, a sampling assembly arranged on the lower surface of the supporting frame, a sampling cylinder for sampling, a water inlet hole arranged on the sampling cylinder, a water repelling piece arranged on the surface of the sampling cylinder, a mounting ring and a water repelling plate arranged on the mounting ring, at least two notches arranged on the mounting ring, the number of the water repelling plates being the same as that of the notches, the water repelling plates being rotatably arranged in the notches, the water repelling plates being tightly attached to the sampling cylinder in a normal state and covering and sealing the water inlet hole, a driving piece arranged on the sampling cylinder and used for driving the mounting ring to move up and down, the mounting ring being driven to move downward to drive the water repelling plate to change from a vertical state to a horizontal state, and the mounting ring being driven to move upward to drive the water repelling plate to change from the horizontal state to the vertical state. The device has the effect of preventing aquatic plants from blocking the water inlet hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of environmental monitoring, in particular to a wetland water environment monitoring sampling device. BACKGROUND

[0002] With the continuous protection of the wetland ecological environment, the monitoring of the wetland water quality is gradually valued, and the detection of the water quality of the wetland can effectively determine whether the current water area meets the environmental protection standard and facilitate the evaluation of the ecological environment of the wetland.

[0003] Because of the particularity of the wetland environment, there are many aquatic plants in the general water area, and because the water inlet on the sampling device is narrow, the aquatic plants in the water area are prone to block the water inlet on the sampling device and affect the sampling work. SUMMARY

[0004] The wetland water environment monitoring sampling device provided in the present application adopts the following technical scheme:

[0005] A wetland water environment monitoring sampling device, comprising a support frame, a floating assembly connected to the support frame, and a sampling assembly arranged on the lower surface of the support frame;

[0006] The sampling assembly comprises a sampling cylinder for sampling, and a water inlet is formed in the sampling cylinder;

[0007] A water stirring member is arranged on the surface of the sampling cylinder, and the water stirring member is used to stir the water body to drive away the surrounding floating plants;

[0008] The water stirring member comprises a mounting ring and a water stirring plate arranged on the mounting ring;

[0009] At least two notches are formed in the mounting ring, and the number of water stirring plates is the same as the number of notches;

[0010] The water stirring plate is rotatably installed in the notch, and in the normal state, the water stirring plate is tightly attached to the sampling cylinder and covers and seals the water inlet;

[0011] A driving member is further arranged on the sampling cylinder, and the driving member drives the mounting ring to move up and down;

[0012] The mounting ring is driven to move downward, and the water stirring plate changes from the vertical state to the horizontal state, and the mounting ring is driven to move upward, and the water stirring plate changes from the horizontal state to the vertical state.

[0013] By adopting the above technical solution, the water in the sampling area can be agitated using the water-dispersing device, creating a flowing current. This current carries floating plants, preventing them from moving towards the sampling tube as the water sample enters, thus avoiding blockage of the inlet hole. When the sampling tube enters the water, the water-dispersing plate adheres to it, preventing the plate from entraining aquatic plants and sealing the inlet hole. This ensures that sampling will not occur until the sampling depth is reached, achieving precise sampling.

[0014] Optionally, the water-repelling plate is fixedly connected to horizontal shafts on both sides of one end of the notch, and the end of the horizontal shaft away from the water-repelling plate is rotatably connected to the inner wall of the notch, so that the horizontal shaft rotates along its own axis.

[0015] The water-dispensing plate has a receiving groove at one end of the notch, and a rotating roller is fixedly installed in the receiving groove. The rotating roller and the horizontal shaft are coaxially arranged.

[0016] Multiple grooves are provided on the surface of the sampling cylinder within the up-and-down movement range of the mounting ring. The grooves are annular and concentrically positioned with the sampling cylinder.

[0017] Multiple grooves are evenly distributed vertically.

[0018] Multiple elongated protrusions are fixedly connected to the circumference of the rotating roller. The length direction of the protrusions is the same as the axial direction of the rotating roller, and the multiple protrusions are evenly distributed around the axial direction of the rotating roller.

[0019] The protrusion can enter the groove.

[0020] By adopting the above technical solution, the cooperation of the groove and the protrusion enables the rotating roller to rotate forward or backward during the up-and-down movement of the moving ring. Thus, by moving the mounting ring up and down, the water-dispensing plate can be driven to move closer to or further away from the sampling cylinder, which is convenient and quick.

[0021] Optionally, the lower end of the sampling tube is provided with an impeller, which is capable of rotation, and the maximum diameter of the impeller is greater than the diameter of the cylindrical shape formed by the water-dispensing plate.

[0022] By adopting the above technical solution, the impeller can break up the plants on the surface of the water, so that when the sampling device enters the water, the sampling device itself will not be entangled by the plants.

[0023] Optionally, the impeller is composed of multiple blades, and each blade has a blade-shaped cross-section in the transverse direction.

[0024] By adopting the above technical solution, the blade-shaped leaves can better break up plants, and the breaking-up efficiency is higher.

[0025] Optionally, a tapered guide section is provided between the ends of the impeller and the sampling cylinder, with the smaller diameter end of the guide section located close to the impeller.

[0026] By adopting the above technical solution, the guide section is inclined, which can prevent the broken plants from staying on the lower surface of the sampling tube, so that the broken plants can float to the surface of the water and will not affect the sampling work.

[0027] Optionally, the support frame includes a rectangular frame with a mounting platform at the center inside the frame, and the mounting platform is fixedly connected to the frame by four support rods.

[0028] The sampling cylinder is equipped with a vertical central column, and a drive shaft is installed inside the central column. The lower end of the drive shaft passes through the guide section and the center of the impeller and is fixedly installed.

[0029] The mounting platform is equipped with an electric motor that can drive the drive shaft to rotate.

[0030] By adopting the above technical solution, the mounting platform can be made more stable, making it easier to install the sampling components. The central column can facilitate the operation of the drive shaft and will not interfere with the interior of the sampling cylinder.

[0031] Optionally, the frame is provided with multiple water baffles on its lower side. The water baffles are installed vertically, and the surfaces of the water baffles on the adjacent side walls of the rectangular frame are perpendicular to each other.

[0032] By adopting the above technical solution, the rotation of the water-repelling plate will generate thrust in the water, which will then cause the sampling device to be subjected to a reverse force, resulting in displacement of the sampling device. Meanwhile, the water-blocking plates with different directions can apply two perpendicular and opposite forces to the water, which will cancel out the force generated by the water-repelling plate, so that the sampling device will not move easily.

[0033] Optionally, the interior of the sampling tube is divided into at least three layers of storage space, which are distributed vertically. The side wall of the sampling tube has multiple sets of water inlets, and the number of sets of water inlets is the same as the number of storage spaces.

[0034] The water inlets of each group are evenly distributed around the axis of the sampling cylinder, and the number of water inlets is the same as the number of water deflectors.

[0035] When the water-repellent plate is attached to the sampling tube, the water inlet hole is covered and sealed.

[0036] By adopting the above technical solution, the sampling tube with multi-layer storage space can sample water samples at different depths, thereby enabling multiple samplings to be completed simultaneously and making water quality monitoring more accurate.

[0037] Optionally, the number of water-repelling components is the same as the number of storage spaces, that is, each storage space is provided with a water-repelling component on its outer side.

[0038] By adopting the above technical solution, multiple water-dispelling components can prevent the water-dispelling plate from being too long, thus avoiding a larger water flow that could affect the accuracy of sampling.

[0039] Optionally, the driving component includes at least two connecting rods, which are arranged vertically and parallel to the axis of the sampling cylinder;

[0040] The linkage rod passes vertically through the mounting rings in all the water-dispensing components, and the upper end of the linkage rod is fixedly connected to the uppermost mounting ring;

[0041] A vertical rod is inserted into the lower end of the linkage rod, and the upper end of the vertical rod extends into the linkage rod and is fixedly connected to a baffle plate. The vertical rod can move up and down inside the linkage rod.

[0042] The lower end of the vertical rod is fixedly connected to a movable ring, which is also sleeved on the outside of the sampling cylinder, and the movable ring and the outer wall of the sampling cylinder are threaded together.

[0043] At least two guide rods are fixedly connected to the lower surface of the moving ring. A horizontal plate is inserted through the lower end of the guide rod. The horizontal plate is fixedly connected to the surface of the guide part, and the lower end of the guide rod can pass through the horizontal plate.

[0044] By adopting the above technical solution, the drive component can synchronously drive the impeller and the water-dispelling component, simplifying the power structure and facilitating maintenance. Furthermore, because the connecting rod and the vertical rod are telescopic, the water-dispelling component will not immediately rotate with the impeller; there will be a certain time difference. Therefore, during the insertion of the sampling device, the water-dispelling plate in the water-dispelling component will not open, maintaining a seal on the water inlet and improving sampling accuracy. Simultaneously, during the insertion of the sampling device, the water-dispelling plate will not open or rotate, thus not affecting the upward movement of the broken plants.

[0045] In summary, this application has the following advantages:

[0046] 1. The sampling tube has multiple storage spaces inside, which allows it to sample water at different heights during the sampling process, thus completing sampling at different depths and improving the accuracy of sampling.

[0047] 2. The water-dispensing plate in the water-dispensing component can open and adhere to the side wall of the sampling cylinder. When the water-dispensing plate is adhered, it can seal the water inlet. Because the driving component can drive the impeller and the water-dispensing plate in a time-sharing manner, the water-dispensing plate will not open and rotate when the sampling device enters the water area. The water-dispensing plate seals the water inlet, ensuring the accuracy of sampling and not affecting the floating of broken plants. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the overall structure of the sampling device in the embodiment.

[0049] Figure 2 This is a cross-sectional view highlighting the storage space in the embodiment.

[0050] Figure 3 This is a cross-sectional view highlighting the internal structure of the sampling device in the embodiment.

[0051] Figure 4 This is a schematic diagram highlighting the water-repellent component in the embodiment.

[0052] Figure 5 yes Figure 4 Enlarged view of section B in the middle.

[0053] Figure 6 yes Figure 3 Enlarged view of section A.

[0054] Figure 7 yes Figure 4 Enlarged view of section C.

[0055] Figure 8 This is a schematic diagram illustrating the working relationship between the connecting rod and the vertical rod in the embodiment.

[0056] Explanation of reference numerals in the attached figures:

[0057] 1. Support frame; 11. Frame; 12. Mounting platform; 13. Support rod; 14. Water baffle; 2. Floating assembly; 21. Floating ball; 22. Connecting plate; 3. Sampling assembly; 31. Sampling cylinder; 311. Water inlet; 32. Impeller; 33. Baffle; 34. Storage space; 35. Water outlet; 36. Vacuum plug; 4. Water-dispelling component; 41. Mounting ring; 411. Groove; 42. Water-dispelling plate; 43. Notch; 44. Receiving groove; 45. Rotating roller; 451. Protrusion; 46. Horizontal shaft; 5. Driving component; 51. Central column; 52. Drive shaft; 53. Motor; 54. Flow guide; 55. Moving ring; 551. Guide rod; 552. Horizontal plate; 56. Vertical rod; 561. Baffle plate; 57. Linkage rod; 571. Round hole; 572. Baffle ring. Detailed Implementation

[0058] This application discloses a wetland water environment monitoring and sampling device. (Refer to...) Figure 1 The sampling device includes a support frame 1, a floating component 2 mounted on the support frame 1, and a sampling component 3. The support frame 1 serves to support the sampling component 3, and the floating component 2 mainly serves to provide buoyancy, enabling the sampling device to remain on the water surface.

[0059] The support assembly 1 includes a rectangular frame 11 and a mounting platform 12 located at the center of the frame 11. The mounting platform 12 is connected to the frame 11 by at least four support rods 13. The four support rods 13 are evenly distributed around the mounting platform 12, thereby ensuring the stability of the connection between the mounting platform 12 and the frame 11. The mounting platform 12 is the mounting base for the sampling assembly 3.

[0060] Vertically arranged water baffles 14 are fixedly connected to the lower surfaces of the four side walls of the frame 11. The thickness directions of adjacent water baffles 14 are perpendicular to each other, and the lower ends of the water baffles 14 are pointed. The water baffles 14 can penetrate into the water, and the arrangement of water baffles 14 in different directions can block water in two directions, thus preventing the sampling device from moving around in the water. In addition, the pointed water baffles 14 can be better inserted into the water.

[0061] The floating assembly 2 includes at least four floating balls 21, which are evenly distributed around the frame 11 and connected to the frame 11 by connecting plates 22. The floating balls 21 can provide sufficient buoyancy so that the sampling device can float in the water.

[0062] The sampling assembly 3 includes a sampling tube 31 and an impeller 32 located at the lower end of the sampling tube 31. The sampling tube 31 is cylindrical and is inserted into the water to take samples. The impeller 32 can rotate, so it can remove floating plants on the water surface before the sampling tube 31 is inserted, thus avoiding the influence of aquatic plants on the sampling.

[0063] Reference Figure 2 The sampling tube 31 has at least two partition plates 33 inside, which divide the sampling tube 31 into multiple vertically distributed storage spaces 34. At least three sets of water inlet holes 311 are provided on the side wall of the sampling tube 31, with the number of sets of water inlet holes 311 being the same as the number of storage spaces 34; each set has at least three water inlet holes 311. During sampling, the sampling tube is inserted into the water, and the storage spaces are located at different heights within the water, thus enabling sampling of water samples at different depths.

[0064] Reference Figure 1 and Figure 2 The sampling tube 31 is also equipped with a water-dispersing component 4, which can agitate the water around the sampling tube 31. One purpose is to remove plants in the water to avoid clogging the water inlet 311, and the other is to make the water flow more convenient for sampling.

[0065] Reference Figure 3 and Figure 4The number of water-dispelling components 4 is the same as the number of storage spaces 34. Thus, the water-dispelling components 4 can seal the water inlet 311, so that when the sampling tube 31 is inserted into the water area, the water sample will not enter the storage space 34 in advance, thereby enabling the storage spaces 34 at different heights to accurately sample water samples at different depths.

[0066] Reference Figure 4 and Figure 5 The water-dispensing component 4 includes a mounting ring 41 and at least three water-dispensing plates 42 disposed on the mounting ring 41. The number of water-dispensing plates 42 is the same as the number of water inlets 311 in each group. The mounting ring 41 is sleeved on the outer wall of the sampling cylinder 31 and can move up and down outside the side wall of the sampling cylinder 31. Under normal conditions, the water-dispensing plates 42 are tightly attached to the outer wall of the sampling cylinder 31 and at the same time cover and seal the water inlets 311, so that the water sample will not enter the storage space 34 in advance through the water inlets 311. When the mounting ring 41 moves downwards, it also rotates. At this time, the end of the water-dispersing plate 42 away from the mounting ring 41 moves away from the water inlet 311. As the end of the water-dispersing plate 42 opens again, it rotates along with the mounting ring 41, thus dispersing water without sealing the water inlet 311. At this point, water samples at different depths enter different storage spaces 34, completing the sampling process. After sampling, the mounting ring 41 moves upwards, causing the water-dispersing plate 42 to re-attach to the outer wall of the sampling cylinder 31, resealing the water inlet 311 and preventing water samples from flowing out.

[0067] The mounting ring 41 has at least three notches 43, the number of which is the same as the number of water-dispensing plates 42. The upper end of the water-dispensing plate 42 extends into the notches 43, and the upper end of the water-dispensing plate 42 has a receiving groove 44. A rotating roller 45 is installed in the receiving groove 44. A horizontal shaft 46 is fixedly connected to the side wall of the water-dispensing plate 42. The horizontal shaft 46 and the rotating roller 45 are coaxially arranged. The end of the horizontal shaft 46 away from the water-dispensing plate 42 is rotatably connected to the side wall of the notch 43, so that the rotating roller 45 can rotate along its own axis.

[0068] Reference Figure 5 and Figure 6The sampling cylinder 31, within the vertical movement range of the mounting ring 41, has multiple annular grooves 411 on its side wall. The grooves 411 coincide with the axis of the sampling cylinder 31, and are evenly distributed vertically. Multiple strip-shaped protrusions 451 are fixedly connected to the circumference of the rotating roller 45. The length direction of the protrusions 451 is the same as the axis of the rotating roller 45, and the protrusions 451 are evenly distributed around the axis of the rotating roller 45, and can enter the grooves 411. Therefore, the rotating roller 45 and the multiple grooves 411 form a gear-like meshing state. When the mounting ring 41 moves up and down, it drives the rotating roller 45 to rotate, thereby causing the water-dispensing plate 42 to swing along the axis of the rotating roller 45. This allows the water-dispensing plate 42 to move away from or towards the side wall of the sampling cylinder 31.

[0069] Reference Figure 1 The outer wall of the sampling cylinder 3 is provided with at least three water outlets 35, the number of which is the same as the number of storage spaces 34, and each water outlet 35 corresponds to a storage space 34. A vacuum plug 36 is inserted into each water outlet 35. After sampling, the vacuum plug 36 can be removed, and the water sample can flow out from the water outlet 35. After the water sample flows out, the vacuum plug 36 is put back in. The vacuum plug 36 can be connected to a vacuum pump to evacuate the storage space 34, thus facilitating the entry of the water sample during sampling.

[0070] Reference Figure 1 and Figure 4 The sampling cylinder 3 is also equipped with a driving component 5, which is used to drive the mounting ring 41 to move up and down and rotate, thereby driving the water-repelling assembly to work.

[0071] Reference Figure 3The driving component 5 includes a central column 51 located at the center of the sampling cylinder 31 and a transmission shaft 52 passing through the central column 51. The upper end of the transmission shaft 52 protrudes from the mounting platform 12. A motor 53 for driving the transmission shaft 52 is mounted on the mounting platform 12. The output shaft of the motor 53 is coaxially connected to the transmission shaft 52. The lower end of the transmission shaft 52 protrudes from the lower end of the sampling cylinder 31, and a tapered guide section 54 is coaxially fixedly connected to the lower end of the transmission shaft 52. The larger diameter end of the guide section 54 is the same as the outer diameter of the sampling cylinder 31, and the larger diameter end of the guide section 54 is located close to the sampling cylinder 31. The transmission shaft 52 can drive the guide section 54 to rotate together. The impeller 32 is installed at the smaller diameter end of the guide section 54, so that the impeller 32 can rotate accordingly. As the sampling cylinder 31 descends, the impeller 32 also rotates. The rotation of the impeller 32 breaks up the plants brought in by the descending sampling cylinder 31, allowing the broken plants to float and preventing them from remaining at the end of the sampling cylinder 31. This prevents the plants from detaching and clogging the water inlet 311 when the water-dispersing component 4 moves the water. The guide section 54 provides better guidance. Furthermore, the blades of the impeller 32 have blade-like cross-sections, making it easier to break up the plants.

[0072] Reference Figure 4 and Figure 7 The driving component 5 also includes a movable ring 55 sleeved on the sampling cylinder 31. The movable ring 55 and the outer wall of the sampling cylinder 31 are threaded together, so the forward and reverse rotation of the movable ring 55 can realize the up and down movement on the sampling cylinder 31. At least two evenly distributed guide rods 551 are fixedly connected to the lower surface of the movable ring 55. The guide rods 551 are vertically arranged, and the lower end of the guide rod 551 is provided with a horizontal plate 552 fixed on the flow guide 54. The lower end of the guide rod 551 is inserted into the horizontal plate 552, and the guide rod 551 can pass through the horizontal plate 552. The guide rod 551 can move up and down, and the horizontal plate 552 will not interfere with the movement of the guide rod 551. Therefore, the rotation of the flow guide 54 can drive the rotation of the movable ring 55 without interfering with the up and down movement of the movable ring 55.

[0073] Reference Figure 4 and Figure 8 At least two evenly distributed vertical rods 56 are fixedly connected to the upper surface of the moving ring 55. The vertical rods 56 are set vertically, and a connecting rod 57 is sleeved on the upper end of the vertical rod 56. The upper end of the connecting rod 57 extends upward and passes through the mounting ring 41 and is fixedly connected to the uppermost mounting ring 41. Thus, the rotation of the moving ring 55 can drive all the mounting rings 41 to rotate.

[0074] The lower end of the linkage rod 57 has a circular hole 571, and the upper end of the vertical rod 56 extends into the circular hole 571. A baffle 561 is fixedly connected to the upper end of the vertical rod 56, and a retaining ring 572 is fixedly connected to the opening of the circular hole 571. The vertical rod 56 can move up and down within the circular hole 571. When the vertical rod 56 moves downward, it can only drive the linkage rod 57 to move downward when the baffle 561 and the retaining ring 572 come into contact. Therefore, when the moving ring 55 starts to move downward, it will not immediately drive the mounting ring 41 to move downward. Only after a certain distance will the mounting ring 41 start to move downward. This allows the driving component 5 to drive the impeller 32 to rotate when the sampling cylinder 31 is initially inserted into the water, without immediately driving the water-dispelling component 4 to move synchronously. This allows the water-dispelling plate 42 to cover and seal the water inlet 311 during the insertion of the sampling cylinder 31.

[0075] A torsion spring (not shown in the figure) is provided between the sidewalls of the horizontal axis 46 and the notch 43. When the water-dispensing plate 42 moves away from the sidewall of the sampling cylinder 31, the torsion spring stores force and has the force to drive the horizontal axis 46 to move in the opposite direction. In order to ensure that the water-dispensing plate 42 maintains its rotation during the sampling process, the moving ring 55 will continue to move downward until the moving ring 55 and the sampling cylinder 31 are no longer in the threaded engagement. After the sampling is completed, in order to ensure that the water-dispensing plate 42 can reattach to the sampling cylinder 31, and at the same time the mounting ring 41 moves upward, and because the connecting rod 57 and the vertical rod 56 can generate relative movement, the water-dispensing plate 42 needs additional power to reset. The torsion spring is this additional power source. At the same time, the motor 53 needs to be reversed to prevent the mounting ring 41 from moving upward and drive the moving ring 55 to move upward. The moving ring 55 and the sampling cylinder 31 will re-establish a cooperative relationship, thereby generating a reverse force to ensure that the water-repelling plate 42 can re-adhere to the surface of the sampling cylinder 31 and re-seal the water inlet 311.

[0076] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wetland water environment monitoring and sampling device, comprising a support frame (1) and a floating assembly (2) connected to the support frame (1), characterized in that: It also includes a sampling component (3) located on the lower surface of the support frame (1); The sampling assembly (3) includes a sampling tube (31) for sampling, and the sampling tube (31) has a water inlet (311); And a water-repelling component (4) is provided on the surface of the sampling tube (31). The water-repelling component (4) is used to move the water body to drive away the surrounding floating plants. The water-dispensing component (4) includes a mounting ring (41) and a water-dispensing plate (42) disposed on the mounting ring (41); The mounting ring (41) has at least two notches (43), and the number of water-dispensing plates (42) is the same as the number of notches (43); The water-dispensing plate (42) is rotatably installed in the notch (43). Under normal conditions, the water-dispensing plate (42) is tightly attached to the sampling tube (31) and covers and seals the water inlet (311). The sampling tube (31) is also equipped with a driving component (5), which drives the mounting ring (41) to move up and down. The mounting ring (41) descends to drive the water deflector (42) from a vertical state to a horizontal state, and the mounting ring (41) rises to drive the water deflector (42) from a horizontal state to a vertical state. The water-dispensing plate (42) is fixedly connected to a horizontal shaft (46) on both sides of one end of the notch (43). The end of the horizontal shaft (46) away from the water-dispensing plate (42) is rotatably connected to the inner wall of the notch (43), so that the horizontal shaft (46) rotates along its own axis. The water-dispensing plate (42) has a receiving groove (44) on one end of the notch (43), and a rotating roller (45) is fixedly installed in the receiving groove (44). The rotating roller (45) and the horizontal shaft (46) are coaxially arranged. Multiple grooves (411) are provided on the surface of the sampling cylinder (31) within the up-and-down movement range of the mounting ring (41). The grooves (411) are annular and concentrically arranged with the sampling cylinder (31). Multiple grooves (411) are evenly arranged vertically; Multiple elongated protrusions (451) are fixedly connected to the circumferential surface of the rotating roller (45). The length direction of the protrusions (451) is the same as the axial direction of the rotating roller (45), and the multiple protrusions (451) are evenly distributed around the axis of the rotating roller (45). The protrusion (451) can enter the groove (411).

2. The wetland water environment monitoring and sampling device according to claim 1, characterized in that: The sampling tube (31) is provided with an impeller (32) at its lower end. The impeller (32) is capable of rotating, and the maximum diameter of the impeller (32) is greater than the diameter of the cylindrical shape formed by the water-dispensing plate (42).

3. The wetland water environment monitoring and sampling device according to claim 2, characterized in that: The impeller (32) is composed of multiple blades, and each blade has a blade-shaped cross section in the transverse direction.

4. The wetland water environment monitoring and sampling device according to claim 2, characterized in that: A tapered guide section (54) is provided between the ends of the impeller (32) and the sampling cylinder (31), with the smaller diameter end of the guide section (54) located close to the impeller (32).

5. The wetland water environment monitoring and sampling device according to claim 4, characterized in that: The support frame (1) includes a rectangular frame (11), and a mounting platform (12) is provided at the center of the frame (11). The mounting platform (12) is fixedly connected to the frame (11) by four support rods (13). The sampling cylinder (31) is provided with a vertical central column (51), and a drive shaft (52) is installed inside the central column (51). The lower end of the drive shaft (52) passes through the center of the guide section (54) and the impeller (32) and is fixedly installed. The mounting platform (12) is equipped with an electric motor (53) that can drive the transmission shaft (52) to rotate.

6. The wetland water environment monitoring and sampling device according to claim 5, characterized in that: The frame (11) is provided with multiple baffles (14) below. The baffles (14) are installed vertically, and the surfaces of the baffles (14) below the adjacent side walls of the rectangular frame (11) are set perpendicular to each other.

7. The wetland water environment monitoring and sampling device according to claim 1, characterized in that: The interior of the sampling tube (31) is divided into at least three layers of storage space (34), and the storage space (34) is distributed vertically. There are multiple sets of water inlet holes (311) on the side wall of the sampling tube (31), and the number of sets of water inlet holes (311) is the same as the number of storage spaces (34). The water inlet holes (311) of each group are evenly distributed around the axis of the sampling tube (31), and the number of water inlet holes (311) is the same as the number of water deflectors (42); When the water-repellent plate (42) is attached to the sampling tube (31), it covers and seals the water inlet (311).

8. The wetland water environment monitoring and sampling device according to claim 7, characterized in that: The number of water-dispelling components (4) is the same as the number of storage spaces (34), that is, each storage space (34) has a water-dispelling component (4) on its outer side.

9. A wetland water environment monitoring and sampling device according to claim 8, characterized in that: The driving component (5) includes at least two connecting rods (57), which are arranged vertically and parallel to the axis of the sampling cylinder (31); The linkage rod (57) passes vertically through the mounting ring (41) in all the water-dispensing parts (4), and the upper end of the linkage rod (57) is fixedly connected to the uppermost mounting ring (41); A vertical rod (56) is inserted into the lower end of the linkage rod (57), and the upper end of the vertical rod (56) extends into the linkage rod (57) and is fixedly connected to a baffle (561). The vertical rod (56) can move up and down inside the linkage rod (57). The lower end of the vertical rod (56) is fixedly connected to a movable ring (55), which is also sleeved on the outside of the sampling cylinder (31), and the movable ring (55) and the outer wall of the sampling cylinder (31) are threadedly connected. At least two guide rods (551) are fixedly connected to the lower surface of the moving ring (55). A horizontal plate (552) is inserted through the lower end of the guide rod (551). The horizontal plate (552) is fixedly connected to the surface of the guide part, and the lower end of the guide rod (551) can pass through the horizontal plate (552).

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