Water sample collecting device for environmental protection

Abstract

The application discloses an environmental protection water sample collecting device, which comprises a mounting bottom plate, a rotating shaft and a mounting frame. The rotating shaft is rotatably arranged on the top of the mounting bottom plate. The application relates to the technical field of water sample collection. The environmental protection water sample collecting device is provided with an isolation sampling mechanism, a flexible winding mechanism and a water sample extracting mechanism on the top of the mounting bottom plate. The device is easy to cooperate with the isolation sampling mechanism, the flexible winding mechanism and the water sample extracting mechanism, so that the device is easy to perform isolation sampling at a specified water depth, and the water sample is prevented from being mixed with other levels of water bodies. The flexible winding mechanism is used for triggering the isolation sampling of the device. The limiting transformation is used for winding and lifting or releasing the sinking cylinder with a conical bottom without affecting sampling. The water sample extracting mechanism is used for draining and extracting the water sample in the rubber corrugated cylinder.

Description

Technical Field

[0001] This invention relates to the field of water sampling technology, specifically to a water sampling device for environmental protection. Background Technology

[0002] In environmental protection work, water quality monitoring is a crucial step in assessing water pollution and developing remediation plans. The accuracy of water sampling directly determines the reliability of water quality monitoring data, hence water sampling devices are widely used in the environmental protection field. Currently, there are many types of environmental protection water sampling devices on the market, but they still have many problems that need to be solved in actual use, especially the significant deficiencies in the isolation sampling process in deep water environments.

[0003] Most existing water sampling devices use a single container that is directly submerged to collect water. This type of sampling mechanism lacks an effective isolation structure and is highly susceptible to interference from water bodies of different depths during descent. When the device sinks from the surface to the target sampling depth, surface water easily enters the container and mixes with the water sample at the target depth. This results in the collected water sample failing to accurately reflect the water quality at that depth, severely impacting the accuracy of subsequent testing data. Furthermore, some devices with preliminary isolation functions have cumbersome triggering mechanisms, often requiring manual control from the shore. This is not only difficult to operate but also suffers from trigger delays, making it difficult to achieve precise isolation the instant the device reaches the designated depth, further reducing sampling quality.

[0004] In addition, the existing devices lack flexibility in adjusting the sampling depth. Most of them can only control the sinking depth by manually releasing the rope length, which cannot achieve precise positioning and stable fixation of the sampling depth according to actual needs. Therefore, an environmental protection water sampling device is proposed to solve the existing problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an environmental protection water sampling device that solves the problem that the sampling mechanism lacks an effective isolation structure and is easily disturbed by water bodies of different depths during the sinking process.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmental protection water sampling device, comprising a mounting base plate, a rotating shaft, and a mounting frame. The rotating shaft is rotatably mounted on the top of the mounting base plate, and the mounting frame is fixedly mounted on the front side of the rotating shaft. Rotary cylinders are rotatably mounted on both sides of the inner cavity of the mounting frame. A first winding wheel is fixedly connected to one side of each rotating cylinder. A lifting strap is wound inside the first winding wheel. The ends of the two lifting straps are fixedly connected to a conical bottom sinking cylinder. An isolation sampling mechanism is provided inside the conical bottom sinking cylinder. A flexible winding mechanism is provided inside the mounting frame. A water sample extraction mechanism is provided on the top of the mounting base plate.

[0007] Preferably, the isolation sampling mechanism includes a rubber corrugated cylinder, which is fixedly disposed at the bottom of the inner cavity of the conical-bottomed sinking cylinder. A sealing circular plate is slidably disposed at the bottom of the inner cavity of the conical-bottomed sinking cylinder. A metal ring is fixedly connected to the top of the rubber corrugated cylinder. Several guide pins are fixedly connected around the top of the metal ring, and an arc-bottom pressure plate is slidably connected between the several guide pins. The bottom of the arc-bottom pressure plate is fixedly connected to the top of the rubber corrugated cylinder. A first limiting frame is fixedly connected to both sides of the top of the arc-bottom pressure plate. A first positioning plate is slidably connected inside the first limiting frame. A first spring is fixedly connected between the first positioning plate and the first limiting frame. A storage cylinder is fixedly connected to the top of the arc-bottom pressure plate. A movable column is slidably connected inside the storage cylinder. A fourth spring is fixedly connected between the movable column and the storage cylinder. A push-pull plate is rotatably connected between the movable column and the first positioning plate. A trigger winding belt is connected to the top of the movable column. A first positioning groove for use with the first positioning plate is opened on both sides of the inner cavity of the conical-bottomed sinking cylinder.

[0008] Preferably, the flexible winding mechanism includes a first servo motor, which is fixedly connected to one side of the mounting frame via a bracket. The output shaft of the first servo motor is fixedly connected to a central control shaft via a coupling, and one end of the central control shaft passes through the rotating drum and is rotatably connected to the inner wall of the mounting frame. A second winding wheel for triggering the winding belt is fixedly connected to the surface of the central control shaft and between the two first winding wheels. Several transverse slide rods are fixedly connected at equal intervals around each of the two first winding wheels on opposite sides. An inner multi-faceted retaining sleeve is slidably connected between the several transverse slide rods on the same side. Both sides of the second take-up reel are fixedly connected to an outer polygonal socket that matches the inner polygonal sleeve. A rotating frame is rotatably mounted on the surface of the inner polygonal sleeve. Both sides of the bottom of the mounting frame cavity are fixedly connected to a first electric telescopic rod. The top of the extension ends of the two first electric telescopic rods are fixedly connected to a top plate. A central control frame is fixedly connected to the top of the top plate, and a push-pull frame is rotatably connected between the central control frame and the rotating frame. Both sides of the top of the top plate are fixedly connected to a stop plate. Both sides of the first take-up reel are provided with several stop slots that match the stop plates.

[0009] Preferably, the water sample extraction mechanism includes a second electric telescopic rod, which is fixedly installed on the top of the mounting base plate. There are two second electric telescopic rods, and a placement cover is fixedly connected between the extension ends of the two second electric telescopic rods. A funnel is fixedly connected inside the placement cover, and a top rod is fixedly connected inside the funnel through a bracket. A sample bottle placement groove is opened at the bottom of the inner cavity of the placement cover.

[0010] Preferably, a second limiting frame is fixedly connected to the front and rear sides of the top of the arc-bottom pressure plate, a second positioning plate is slidably connected inside the second limiting frame, a second spring is fixedly connected between the second positioning plate and the second limiting frame, a push plate is fixedly connected to the top of the second positioning plate, and a second positioning groove adapted to the second positioning plate is opened on the front and rear sides of the inner cavity of the conical bottom sinking cylinder.

[0011] Preferably, the inner wall of the conical bottom sinking cylinder is provided with a plurality of guide grooves, the outer surface of the arc bottom pressure plate is fixedly connected with a guide slider that slides and adapts to the guide grooves, and a third spring is fixedly connected between the guide slider and the guide grooves.

[0012] Preferably, a second servo motor is fixedly connected to the top of the mounting base plate, and meshing gears are installed on the end of the output shaft and the surface of the rotating shaft of the second servo motor.

[0013] Preferably, a reinforcing cover is fixedly connected to the top of the mounting base plate, and the reinforcing cover is rotatably connected to the rotating shaft. An annular groove is provided on the top of the reinforcing cover, and an arc-shaped reinforcing slide plate is slidably connected inside the annular groove. The top of the arc-shaped reinforcing slide plate is fixedly connected to the bottom of the mounting frame.

[0014] Preferably, the surfaces of the first positioning plate and the second positioning plate are each provided with a plurality of ball bearings.

[0015] Preferably, a traction roller is rotatably arranged between the two sides of the inner cavity of the mounting frame, and two traction rollers are arranged in front and behind.

[0016] This invention provides a water sampling device for environmental protection. Compared with existing technologies, it has the following advantages:

[0017] (1) The environmental protection water sampling device, by setting an isolation sampling mechanism, a flexible winding mechanism and a water sample extraction mechanism on the top of the mounting base plate, makes it easy for the device to perform isolation sampling at a specified water depth through the coordinated cooperation of the isolation sampling mechanism, the flexible winding mechanism and the water sample extraction mechanism, ensuring that the water sample is not mixed by other water bodies, and the flexible winding mechanism makes it easy to trigger the isolation sampling of the device, and on this basis, through the limit change, the device can also easily perform flexible winding, lifting or releasing of the cone-shaped sinking cylinder without affecting the sampling, and the water sample extraction mechanism makes it easy to draw and extract the water sample in the rubber corrugated cylinder.

[0018] (2) The environmental protection water sampling device sets the bottom of the arc-bottom pressure plate as an arc surface, which makes it easy for the arc-bottom pressure plate to compress the middle of the folded rubber corrugated cylinder while folding the volume of the rubber corrugated cylinder. This causes the top of the rubber corrugated cylinder to sink into the remaining space inside the rubber corrugated cylinder, further reducing the storage volume of the rubber corrugated cylinder and avoiding the problem of excessive air accumulation inside the rubber corrugated cylinder, which would cause inconvenience in sinking.

[0019] (3) The environmental protection water sampling device sets the bottom of the cone-shaped sinking tube as a cone surface, so that the cone-shaped sinking tube can easily fall over quickly after contacting the water surface, thereby prompting the cone-shaped sinking tube to quickly fill with water in the fallen state, increasing its own weight and sinking into the water quickly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the mounting frame of the present invention;

[0022] Figure 3 This is a schematic diagram of the external structure of the present invention from another perspective;

[0023] Figure 4 This is a schematic diagram of the internal structure of the reinforcing cover of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the cone-shaped sinker of the present invention;

[0025] Figure 6 For the present invention Figure 5 A magnified view of a section at point A in the middle;

[0026] Figure 7 This is a schematic diagram of the internal structure of the cone-shaped sinking cylinder of the present invention from another perspective;

[0027] Figure 8 For the present invention Figure 7 A magnified view of a section at point B in the middle;

[0028] Figure 9 This is a schematic diagram of the isolation sampling mechanism structure of the present invention;

[0029] Figure 10 A schematic diagram (I) of the flexible winding mechanism structure of the present invention;

[0030] Figure 11 This is a schematic diagram (II) of the flexible winding mechanism structure of the present invention.

[0031] Figure 12 This is a schematic diagram of the water sample extraction mechanism of the present invention.

[0032] In the diagram: 1. Mounting base plate; 2. Rotary shaft; 3. Mounting frame; 4. Rotary drum; 5. First winding wheel; 6. Lifting belt; 7. Conical bottom sinking cylinder; 8. Isolation sampling mechanism; 801. Rubber corrugated cylinder; 802. Sealing circular plate; 803. Metal ring; 804. Guide column; 805. Arc bottom pressure plate; 806. First limiting frame; 807. First positioning plate; 808. First spring; 809. Storage cylinder; 810. Movable column; 811. Fourth spring; 812. Push-pull plate; 813. Trigger winding belt; 814. First positioning groove; 9. Flexible winding mechanism; 901. First servo motor; 902. Central control shaft; 903. Second winding wheel; 904. Lateral slide bar; 905. Inner multi-faceted sleeve; 9 06. Turning frame; 907. First electric telescopic rod; 908. Top plate; 909. Central control frame; 910. Push-pull frame; 911. Stop plate; 912. Stop slot; 913. External polygonal socket; 10. Water sample extraction mechanism; 101. Second electric telescopic rod; 102. Placement cover; 103. Funnel; 104. Top rod; 105. Sample bottle placement slot; 11. Second limiting frame; 12. Second positioning plate; 13. Second spring; 14. Hand push plate; 15. Second positioning groove; 16. Guide slide; 17. Guide slider; 18. Third spring; 19. Second servo motor; 20. Gear; 21. Reinforcement cover; 22. Annular groove; 23. Arc-shaped reinforced sliding plate; 24. Ball bearing; 25. Traction roller. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Please see Figures 1-12This invention provides a technical solution: an environmental protection water sampling device, comprising a mounting base plate 1, a rotating shaft 2, and a mounting frame 3. The rotating shaft 2 is rotatably mounted on the top of the mounting base plate 1, and the mounting frame 3 is fixedly mounted on the front side of the rotating shaft 2. Rotary cylinders 4 are rotatably mounted on both sides of the inner cavity of the mounting frame 3. A first winding wheel 5 is fixedly connected to one side of the rotating cylinder 4. A lifting strap 6 is wound inside the first winding wheel 5. The ends of the two lifting straps 6 are jointly fixedly connected to a conical sinking cylinder 7. A second servo motor is fixedly connected to the top of the mounting base plate 1. 19, and the end of the output shaft of the second servo motor 19 and the surface of the rotating shaft 2 are both equipped with meshing gears 20. The top of the mounting base plate 1 is fixedly connected to a reinforcing cover 21, and the reinforcing cover 21 is rotatably connected to the rotating shaft 2. The top of the reinforcing cover 21 is provided with an annular groove 22, and an arc-shaped reinforcing slide plate 23 is slidably connected inside the annular groove 22. The top of the arc-shaped reinforcing slide plate 23 is fixedly connected to the bottom of the mounting frame 3. Traction rollers 25 are rotatably arranged between the two sides of the inner cavity of the mounting frame 3, and there are two traction rollers 25 arranged in front and behind.

[0035] In a preferred embodiment, to facilitate sampling while isolating other water layers, an isolation sampling mechanism 8 is provided inside the conical bottom sinker 7. The isolation sampling mechanism 8 includes a rubber corrugated cylinder 801, which is fixedly disposed at the bottom of the inner cavity of the conical bottom sinker 7. A sealing circular plate 802 is slidably disposed at the bottom of the inner cavity of the conical bottom sinker 7. A metal ring 803 is fixedly connected to the top of the rubber corrugated cylinder 801. Several guide pins 804 are fixedly connected around the top of the metal ring 803, and an arc-bottom pressure plate 805 is slidably connected between the guide pins 804. The bottom of the arc-bottom pressure plate 805 is fixedly connected to the top of the rubber corrugated cylinder 801, and both sides of the top of the arc-bottom pressure plate 805 are fixedly connected to... The first limiting frame 806 has a first positioning plate 807 slidably connected inside it. A first spring 808 is fixedly connected between the first positioning plate 807 and the first limiting frame 806. A storage tube 809 is fixedly connected to the top of the arc-bottom pressure plate 805. A movable column 810 is slidably connected inside the storage tube 809. A fourth spring 811 is fixedly connected between the movable column 810 and the storage tube 809. A push-pull plate 812 is rotatably connected between the movable column 810 and the first positioning plate 807. A trigger winding belt 813 is connected to the top of the movable column 810. The inner sides of the conical bottom sinking cylinder 7 are provided with first positioning grooves 814 that are used in conjunction with the first positioning plate 807.

[0036] The front and rear sides of the top of the arc-bottom pressure plate 805 are fixedly connected to a second limiting frame 11. The second positioning plate 12 is slidably connected inside the second limiting frame 11. A second spring 13 is fixedly connected between the second positioning plate 12 and the second limiting frame 11. A push plate 14 is fixedly connected to the top of the second positioning plate 12. The front and rear sides of the inner cavity of the cone-bottom sinking cylinder 7 are provided with a second positioning groove 15 that matches the second positioning plate 12. Several guide grooves 16 are provided around the inner wall of the cone-bottom sinking cylinder 7. A guide slider 17 that slides and matches the guide groove 16 is fixedly connected to the outer surface of the arc-bottom pressure plate 805. A third spring 18 is fixedly connected between the guide slider 17 and the guide groove 16. Several balls 24 are provided on the surfaces of the first positioning plate 807 and the second positioning plate 12.

[0037] In a preferred embodiment, to facilitate convenient and quick triggering of the isolation sampling mechanism 8 while lifting and releasing the cone-shaped sinking cylinder 7, a flexible winding mechanism 9 is provided inside the mounting frame 3. The flexible winding mechanism 9 includes a first servo motor 901, which is fixedly connected to one side of the mounting frame 3 via a bracket. The output shaft of the first servo motor 901 is fixedly connected to a central control shaft 902 via a coupling. One end of the central control shaft 902 passes through the rotating cylinder 4 and is rotatably connected to the inner wall of the mounting frame 3. A second winding wheel 903, matching the trigger winding belt 813, is fixedly connected to the surface of the central control shaft 902 between the two first winding wheels 5. Several transverse sliding rods 904 are fixedly connected at equal intervals around each of the two first winding wheels 5 on opposite sides. An inner polygonal sleeve 905 is slidably connected between the transverse slide rods 904. An outer polygonal socket 913, which is used in conjunction with the inner polygonal sleeve 905, is fixedly connected to both sides of the second take-up wheel 903. A rotating frame 906 is rotatably provided on the surface of the inner polygonal sleeve 905. A first electric telescopic rod 907 is fixedly connected to both sides of the bottom of the inner cavity of the mounting frame 3. A top plate 908 is fixedly connected to the top of the extension ends of the two first electric telescopic rods 907. A central control frame 909 is fixedly connected to the top of the top plate 908. A push-pull frame 910 is rotatably connected between the central control frame 909 and the rotating frame 906. A stop plate 911 is fixedly connected to both sides of the top of the top plate 908. Several stop slots 912 that are adapted to the stop plate 911 are opened on both sides of the first take-up wheel 5.

[0038] In a preferred embodiment, to facilitate water sample extraction, a water sample extraction mechanism 10 is provided on the top of the mounting base plate 1. The water sample extraction mechanism 10 includes a second electric telescopic rod 101, which is fixedly installed on the top of the mounting base plate 1. There are two second electric telescopic rods 101, and a placement cover 102 is fixedly connected between the extension ends of the two second electric telescopic rods 101. A funnel 103 is fixedly connected inside the placement cover 102, and a top rod 104 is fixedly connected inside the funnel 103 through a bracket. A sample bottle placement groove 105 is opened at the bottom of the inner cavity of the placement cover 102.

[0039] The specific usage steps are as follows:

[0040] Sampling depth self-adjustment: The first servo motor 901 is started. The first servo motor 901 drives the second take-up wheel 903 to rotate through the central control shaft 902. The second take-up wheel 903 drives the first take-up wheel 5 to rotate synchronously through the engagement of the outer polygonal socket 913 and the inner polygonal sleeve 905. The rotation of the first take-up wheel 5 releases the length of the lifting sling 6. The rotation of the second take-up wheel 903 releases the length of the trigger take-up belt 813 synchronously. With the release of the lifting sling 6 and the trigger take-up belt 813, the bottom of the cone-shaped sinking cylinder 7 begins to contact the water surface. Since the bottom of the cone-shaped sinking cylinder 7 is a cone, the cone-shaped sinking cylinder 7 will tilt and float on the water surface during the release of the lifting sling 6, and backflow water from the tilted state. After the cone-shaped sinking cylinder 7 enters the water source, it will naturally sink into the water source.

[0041] Depth Sampling: After the cone-shaped sinking cylinder 7 is filled with water and settles to the specified sampling depth, the first electric telescopic rod 907 is activated. The extension end of the first electric telescopic rod 907 drives the top plate 908 and the central control frame 909 to rise. The rise of the central control frame 909 pushes the rotating frame 906 to move laterally through the push-pull frame 910. The lateral movement of the rotating frame 906 causes the inner polygonal sleeve 905 to move, causing the inner polygonal sleeve 905 to disengage from the outer polygonal socket 913. During the disengagement of the inner polygonal sleeve 905 and the outer polygonal socket 913, the corresponding top plate 908 will drive the stop plate 911 to enter the interior of the bottom stop slot 912 of the first winding wheel 5, thereby limiting the first winding wheel 5.

[0042] Then, the first servo motor 901 is activated, causing it to drive the second take-up roller 903 to rotate in reverse one revolution via the central control shaft 902. The reverse rotation of the second take-up roller 903 will wind the trigger take-up belt 813. When the trigger take-up belt 813 winds upward, it pulls the movable column 810 upward. The upward movement of the movable column 810 drags the first positioning plate 807 laterally via the push-pull plate 812. The lateral movement of the first positioning plate 807 disengages it from the first positioning groove 814, thus disengaging it from the limit. After positioning, the arc-bottom pressure plate 805 rises and resets under the tension of the third spring 18. When the arc-bottom pressure plate 805 rises, its arc-shaped bottom pulls the top of the rubber bellows 801 in advance, causing the top of the rubber bellows 801 to return to a balanced state in advance. Then, the rise of the arc-bottom pressure plate 805 will drive the metal ring 803 to rise through the guide column 804. The metal ring 803 drives the rubber bellows 801 to unfold as a whole. During the rise of the arc-bottom pressure plate 805, the rise will be stopped by the limiting cooperation between the second positioning plate 12 and the second positioning groove 15.

[0043] When the top of the rubber corrugated cylinder 801 rises, the sealing disc 802 will slide upward due to the loss of the downward pressure of the rubber corrugated cylinder 801 and the upward flow of water. After the rubber corrugated cylinder 801 is filled with water, the sealing disc 802 will naturally sink and seal.

[0044] Sample removal from water: After the rubber corrugated cylinder 801 is filled with water sample, reset the inner multi-faceted sleeve 905 and the stop plate 911, so that the inner multi-faceted sleeve 905 can re-fit with the outer multi-faceted socket 913. Finally, continue to reverse and start the first servo motor 901, so that the central control shaft 902 can synchronously drive the second winding wheel 903 and the first winding wheel 5 to rotate in reverse. When the second winding wheel 903 and the first winding wheel 5 reverse winding, the cone-shaped sinking cylinder 7 rises as a whole and finally leaves the water surface, and its top end is attached to the bottom of the mounting frame 3 after leaving the water surface.

[0045] Sample extraction: Then the second servo motor 19 is started. The output shaft of the second servo motor 19 meshes with the drive gear 20, causing the rotating shaft 2 to rotate backward, carrying the mounting frame 3 and the cone-bottom sinking cylinder 7. After the backward rotation, the second electric telescopic rod 101 is started. The extension end of the second electric telescopic rod 101 drives the placement cover 102, the funnel 103 and the top rod 104 to rise. The rising top rod 104 will enter the interior of the cone-bottom sinking cylinder 7 from bottom to top and push open the sealing circular plate 802. After the sealing circular plate 802 is pushed open, the water source will enter the interior of the funnel 103 and flow into the sample bottle in the placement cover 102 through the funnel 103.

[0046] It should be noted that when taking samples again, the second positioning plate 12 and the second positioning groove 15 need to be manually released beforehand, and the rubber corrugated cylinder 801 needs to be recompressed and repositioned.

Claims

1. An environmental protection water sampling device, comprising a mounting base plate (1), a rotating shaft (2), and a mounting frame (3), wherein the rotating shaft (2) is rotatably disposed on the top of the mounting base plate (1), and the mounting frame (3) is fixedly disposed on the front side of the rotating shaft (2), characterized in that: Rotary drums (4) are rotatably provided on both sides of the inner cavity of the mounting frame (3). A first winding wheel (5) is fixedly connected to one side of the rotating drum (4). A lifting belt (6) is wound inside the first winding wheel (5). The ends of the two lifting belts (6) are fixedly connected to a cone-shaped sinking cylinder (7). An isolation sampling mechanism (8) is provided inside the cone-shaped sinking cylinder (7). A flexible winding mechanism (9) is provided inside the mounting frame (3). A water sample extraction mechanism (10) is provided on the top of the mounting base plate (1). The isolation sampling mechanism (8) includes a rubber corrugated cylinder (801), which is fixedly installed at the bottom of the inner cavity of the conical bottom sinking cylinder (7). A sealing circular plate (802) is slidably installed at the bottom of the inner cavity of the conical bottom sinking cylinder (7). A metal ring (803) is fixedly connected to the top of the rubber corrugated cylinder (801). Several guide pins (804) are fixedly connected around the top of the metal ring (803). An arc-bottom pressure plate (805) is slidably connected between the several guide pins (804). The bottom of the arc-bottom pressure plate (805) is fixedly connected to the top of the rubber corrugated cylinder (801). A first limiting frame (806) is fixedly connected to both sides of the top of the arc-bottom pressure plate (805). The interior of the first limiting frame (806) is slidably connected. A first positioning plate (807) is attached, and a first spring (808) is fixedly connected between the first positioning plate (807) and the first limiting frame (806). A storage cylinder (809) is fixedly connected to the top of the arc-bottom pressure plate (805). A movable column (810) is slidably connected inside the storage cylinder (809). A fourth spring (811) is fixedly connected between the movable column (810) and the storage cylinder (809). A push-pull plate (812) is rotatably connected between the movable column (810) and the first positioning plate (807). A trigger winding belt (813) is connected to the top of the movable column (810). A first positioning groove (814) matching the first positioning plate (807) is opened on both sides of the inner cavity of the cone-bottom sinking cylinder (7). The flexible winding mechanism (9) includes a first servo motor (901), which is fixedly connected to one side of the mounting frame (3) via a bracket. The output shaft of the first servo motor (901) is fixedly connected to a central control shaft (902) via a coupling. One end of the central control shaft (902) passes through the rotating drum (4) and is rotatably connected to the inner wall of the mounting frame (3). A second winding wheel (903) for use with the trigger winding belt (813) is fixedly connected to the surface of the central control shaft (902) between the two first winding wheels (5). Several transverse slide rods (904) are fixedly connected at equal intervals around the two first winding wheels (5) on opposite sides. Several transverse slide rods (904) on the same side are slidably connected to an inner multi-faceted ferrule (905). The second winding wheel (903) is fixedly connected to the central control shaft (902) between the two first winding wheels (5) via a coupling. 3) Both sides are fixedly connected to an outer polygonal socket (913) that is compatible with the inner polygonal sleeve (905). The inner polygonal sleeve (905) is rotatably provided with a rotating frame (906). Both sides of the bottom of the inner cavity of the mounting frame (3) are fixedly connected to a first electric telescopic rod (907). The top of the extension ends of the two first electric telescopic rods (907) are fixedly connected to a top plate (908). The top of the top plate (908) is fixedly connected to a central control frame (909). A push-pull frame (910) is rotatably connected between the central control frame (909) and the rotating frame (906). Both sides of the top of the top plate (908) are fixedly connected to a stop plate (911). Both sides of the first winding wheel (5) are provided with several stop slots (912) that are compatible with the stop plate (911). The water sample extraction mechanism (10) includes a second electric telescopic rod (101), which is fixedly installed on the top of the mounting base plate (1). There are two second electric telescopic rods (101), and a placement cover (102) is fixedly connected between the extension ends of the two second electric telescopic rods (101). A funnel (103) is fixedly connected inside the placement cover (102), and a top rod (104) is fixedly connected inside the funnel (103) through a bracket. A sample bottle placement groove (105) is opened at the bottom of the inner cavity of the placement cover (102).

2. The environmental protection water sampling device according to claim 1, characterized in that: The front and rear sides of the top of the arc-bottom pressure plate (805) are fixedly connected to a second limiting frame (11). The second limiting frame (11) is slidably connected to a second positioning plate (12). A second spring (13) is fixedly connected between the second positioning plate (12) and the second limiting frame (11). A push plate (14) is fixedly connected to the top of the second positioning plate (12). The front and rear sides of the inner cavity of the cone-bottom sinking cylinder (7) are provided with a second positioning groove (15) that matches the second positioning plate (12).

3. The environmental protection water sampling device according to claim 1, characterized in that: The inner wall of the cone-shaped sinking cylinder (7) is provided with several guide grooves (16). The outer surface of the arc-shaped bottom pressure plate (805) is fixedly connected with a guide slider (17) that is adapted to slide with the guide groove (16). A third spring (18) is fixedly connected between the guide slider (17) and the guide groove (16).

4. The environmental protection water sampling device according to claim 1, characterized in that: The top of the mounting base plate (1) is fixedly connected to a second servo motor (19), and the end of the output shaft of the second servo motor (19) and the surface of the rotating shaft (2) are both equipped with meshing gears (20).

5. The environmental protection water sampling device according to claim 1, characterized in that: The top of the mounting base plate (1) is fixedly connected to a reinforcing cover (21), and the reinforcing cover (21) is rotatably connected to the rotating shaft (2). The top of the reinforcing cover (21) is provided with an annular groove (22), and an arc-shaped reinforcing slide plate (23) is slidably connected inside the annular groove (22). The top of the arc-shaped reinforcing slide plate (23) is fixedly connected to the bottom of the mounting frame (3).

6. The environmental protection water sampling device according to claim 1, characterized in that: The surfaces of the first positioning plate (807) and the second positioning plate (12) are each provided with a plurality of ball bearings (24).

7. The environmental protection water sampling device according to claim 1, characterized in that: The mounting frame (3) has traction rollers (25) rotatably arranged between the two sides of the inner cavity, and there are two traction rollers (25) arranged in front and behind.

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