A hydrogeological exploration upper-layer perched water sampling device

Abstract

This invention provides an upper-layer perched water sampling device for hydrogeological exploration, belonging to the field of hydrogeological exploration technology. It includes a first cylinder, a second cylinder, a guide tube, a positioning mechanism, a launching and retracting mechanism, a water intake pipe, and a propulsion mechanism. The first and second cylinders are vertically arranged within two sampling holes. The guide tube includes a rigid tube and a flexible air-expanding tube that are interconnected. The rigid tube is located within the first cylinder, with a bend at its bottom end. The flexible air-expanding tube is located on the bend and, after inflation, is horizontal. The positioning mechanism is located within the second cylinder and can lock the flexible air-expanding tube. The top end of the water intake pipe is outside the first cylinder, and the bottom end has a guide ring that slides along the length of the guide tube. The propulsion mechanism includes a propulsion component for pushing the water intake pipe and a flipping component for driving the propulsion component to flip. This invention enables sampling at multiple locations horizontally after entering the sampling hole, thereby significantly reducing the number of sampling holes drilled.

Description

Technical Field

[0001] This invention relates to the field of hydrogeological exploration technology, and more specifically, to a sampling device for upper-level perched water in hydrogeological exploration. Background Technology

[0002] Perched water is gravity water distributed above the vadose zone and above the local impermeable layer, replenished by atmospheric precipitation. It exhibits seasonal fluctuations and is susceptible to pollution. During hydrogeological exploration, it is necessary to sample the perched water in the exploration area to obtain accurate data on its water quality, quantity, and pollution status, providing a scientific basis for subsequent water resource utilization or pollution control.

[0003] Currently, when sampling upper perched water, the spacing of the sampling boreholes needs to be dynamically adjusted according to geological conditions. The core principle is to ensure that the detection coverage is complete, safe, and efficient. Since samples need to be obtained from different locations within the upper perched water, multiple sampling holes need to be drilled in the sampling area, and the spacing between adjacent sampling holes needs to be between 1.5m and 3m. Therefore, the drilling operation is labor-intensive and time-consuming, resulting in a reduction in the overall sampling efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an upper perched water sampling device for hydrogeological exploration, which can take samples at multiple locations along the horizontal direction after entering the sampling hole, thereby significantly reducing the number of sampling holes to be drilled, reducing the workload of drilling operations, and improving the overall sampling efficiency.

[0005] This invention is achieved through the following technical solution: a sampling device for upper-layer perched water in hydrogeological exploration, comprising:

[0006] A first cylindrical body, the first cylindrical body is arranged vertically, and a first support is provided on the top of the first cylindrical body;

[0007] The second cylinder is arranged parallel to the first cylinder and has a gap between them, and the top of the second cylinder is provided with a second support.

[0008] The guide tube includes a rigid tube and a flexible air expansion tube that are interconnected. The rigid tube is disposed in the first cylinder. The bottom end of the rigid tube is provided with an elbow section. The flexible air expansion tube is disposed on the elbow section. The top of the rigid tube is provided with an air inlet. The flexible air expansion tube is in a horizontal state after being inflated.

[0009] A positioning mechanism is provided inside the second cylinder. The positioning mechanism includes two positioning frames. Each of the two positioning frames is provided with a clamping plate for clamping the flexible air expansion tube on one side that is close to each other. A drive electric cylinder is provided between the two positioning frames.

[0010] The retraction mechanism includes a retraction rod and a lifting assembly. The retraction rod is used to set up the flexible air expansion tube before inflation or after deflation. The lifting assembly is used to drive the retraction rod to move along the length of the first cylinder.

[0011] A water intake pipe, wherein the bottom end of the water intake pipe is provided with a guide ring that can slide along the length direction of the guide pipe;

[0012] The propulsion mechanism includes a propulsion component for pushing the water intake pipe and a flipping component for driving the propulsion component to flip.

[0013] The water intake pipe has multiple flanges distributed along its length, and the propulsion component is used to push the flanges so that the water intake pipe slides along the length of the flexible air-expanding pipe.

[0014] Furthermore, the propulsion assembly includes a propulsion cylinder, a propulsion block, a telescopic block, and a retaining spring. The propulsion block is fixedly connected to the piston rod of the propulsion cylinder. The side of the propulsion block facing the flexible air expansion tube has a telescopic groove. The telescopic block is slidably connected in the telescopic groove. One end of the retaining spring is connected to the bottom wall of the telescopic groove, and the other end is connected to the telescopic block.

[0015] Furthermore, the flange has a first plane and a first arcuate surface, and the telescopic block has a second plane and a second arcuate surface;

[0016] When the second plane abuts against the first plane, the telescopic block can drive the flange to move; when the second arcuate surface abuts against the first arcuate surface, the telescopic block can slide into the push block.

[0017] Furthermore, the flipping assembly includes a support base, a rotating base, and a worm gear mechanism. The support base is located at the bottom of the first cylinder, the rotating base is rotatably mounted on the support base, the worm gear mechanism is located at the bottom of the support base and can drive the rotating base to rotate, and the cylinder of the propulsion electric cylinder is fixedly mounted at the end of the rotating base away from the support base.

[0018] Furthermore, the first cylinder is provided with a first lifting component for driving the guide tube to move up and down in the vertical direction. The first lifting component includes a first fixed seat, a first electric cylinder and a movable seat. The first fixed seat is fixedly disposed in the first cylinder, the cylinder barrel of the first electric cylinder is fixedly connected to the first fixed seat, the movable seat is disposed on the piston rod of the first electric cylinder, and the top end of the rigid tube is fixedly connected to the movable seat.

[0019] Furthermore, the second cylinder is provided with a second lifting member for driving the positioning mechanism to move up and down in the vertical direction. The second lifting member includes a second fixed seat and a second electric cylinder. The second fixed seat is fixedly disposed in the second cylinder, the cylinder of the second electric cylinder is fixedly connected to the second fixed seat, and the piston rod of the second electric cylinder is fixedly connected to one of the positioning frames.

[0020] Furthermore, the propulsion mechanism is slidably disposed at the bottom of the first cylinder along the length direction of the first cylinder, and is fixedly connected to the movable seat via a connecting rod.

[0021] Furthermore, the lifting assembly includes a drive motor, a lead screw, and a guide rod. The lead screw and the guide rod are both vertically arranged outside the first cylinder. Both ends of the retracting rod are provided with sleeves, one of which is threadedly connected to the lead screw, and the other is slidably connected to the guide rod.

[0022] The first cylinder has a first fixing block at both ends of the lead screw, and the lead screw is rotatably connected between the two first fixing blocks. The drive motor is fixedly mounted on one of the first fixing blocks and the output shaft of the drive motor is fixedly connected to the lead screw. The first cylinder has a second fixing block at both ends of the guide rod, and the guide rod is fixedly connected between the two second fixing blocks.

[0023] Furthermore, a strip groove is provided at the bottom of the side of the first cylinder and the second cylinder that are close to each other, the bent section of the rigid tube extends out of the strip groove, and the retracting rod is a U-shaped rod that can move to below the bent section.

[0024] Furthermore, an air pump and a water pump are provided on the outside of the first bracket. The air pump is connected to the air inlet of the rigid pipe through an air inlet pipe, and the water pump is connected to the water outlet pipe through a water outlet pipe.

[0025] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0026] 1. This invention provides a guide tube between the first and second cylinders, with a flexible air-expanding tube at its bottom. The flexible air-expanding tube is inflated to a horizontal state by inflation, and its end is fixed by a positioning mechanism within the second cylinder. This guide tube guides the movement of the water intake pipe. After the guide ring at the bottom of the water intake pipe passes through the rigid pipe and the bend section and reaches the flexible air-expanding tube, it can move along the length of the flexible air-expanding tube within the upper perched water layer, thus reaching the designated location for sampling. Because sampling can be performed at multiple locations between two sampling holes, the number of sampling holes drilled can be reduced, thereby reducing the workload of drilling operations and improving the overall sampling efficiency.

[0027] 2. The present invention uses a first lifting component in the first cylinder to drive the guide tube to move up and down in the vertical direction, and a second lifting component in the second cylinder to drive the positioning mechanism to move up and down in the vertical direction, so as to drive the guide tube and the positioning mechanism to move down simultaneously, so that the horizontal part of the bottom of the water intake pipe moves up and down inside the upper stagnant water, thereby reaching the specified depth for sampling.

[0028] 3. The present invention provides a propulsion mechanism consisting of a flipping component and a propulsion component. The worm gear mechanism drives the rotating seat to a horizontal state, which in turn drives the propulsion component to a horizontal state. During this process, the bottom of the water intake pipe can be bent to a horizontal state. Then, the propulsion block is moved by the propulsion electric cylinder, which can push the flange on the water intake pipe so that the end of the water intake pipe can be moved to a designated position in the upper stagnant water for sampling. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the guide pipe, water intake pipe, propulsion mechanism and positioning mechanism of the present invention inside the first cylinder and the second cylinder;

[0031] Figure 3 This is a schematic diagram of the structure of the guide pipe, water intake pipe, propulsion mechanism and first cylinder of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the second lifting component and the positioning mechanism of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the retraction mechanism of the present invention when retracting or extending the flexible air expansion tube;

[0034] Figure 6 This is a schematic diagram of the structure of the guide pipe, water intake pipe and propulsion mechanism of the present invention;

[0035] Figure 7 This is a schematic diagram of the propulsion mechanism and water intake pipe of the present invention;

[0036] Figure 8 This is a schematic diagram of the propulsion component and flange of the present invention;

[0037] Reference numerals: 1-First cylinder, 11-First support, 12-First lifting component, 121-First fixed seat, 122-First electric cylinder, 123-Modible seat, 2-Second cylinder, 21-Second support, 22-Second lifting component, 221-Second fixed seat, 222-Second electric cylinder, 3-Guide tube, 31-Rigid tube, 311-Inflation port, 32-Flexible air expansion tube, 33-Elbow section, 4-Positioning mechanism, 41-Positioning frame, 42-Clamping plate, 43-Drive electric cylinder, 5-Retraction and release mechanism, 51-Retraction and release rod, 511-Sleeve, 52-Lifting assembly, 521-Drive motor, 522- Lead screw, 523-guide rod, 524-first fixed block, 525-second fixed block, 6-water intake pipe, 61-guide ring, 62-flange, 621-first plane, 622-first arc-shaped surface, 7-propulsion mechanism, 71-propulsion assembly, 711-propulsion electric cylinder, 712-propulsion block, 713-telescopic block, 7131-second plane, 7132-second arc-shaped surface, 714-clamping spring, 72-flipping assembly, 721-support seat, 722-rotating seat, 723-worm gear mechanism, 73-connecting rod, 8-air pump, 81-air inflator pipe, 9-water pump, 91-water intake pipe. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] Example

[0041] The following is for reference Figures 1-8 As shown in the illustration, and further illustrated with specific embodiments, this embodiment provides an upper-layer perched water sampling device for hydrogeological exploration, referring to... Figure 1 , Figure 2 , Figure 3As shown, the system includes a first cylinder 1, a second cylinder 2, a guide tube 3, a positioning mechanism 4, a retraction mechanism 5, a water intake pipe 6, and a propulsion mechanism 7. The first cylinder 1 is vertically positioned within one of the sampling holes, and a first support 11 is mounted on its top. The second cylinder 2 is positioned within the next sampling hole, parallel to and spaced from the first cylinder 1, and a second support 21 is mounted on its top. The guide tube 3 includes a rigid tube 31 and a flexible air-expanding tube 32 that are interconnected. The rigid tube 31 is positioned within the first cylinder 1, with a bend 33 at its bottom end. The flexible air-expanding tube 32 is positioned on the bend 33, and an inflation port 311 is mounted on the top of the rigid tube 31 (see reference). Figure 6 The flexible air expansion tube 32 is inflated and then placed in a horizontal position. The positioning mechanism 4 is located inside the second cylinder 2 and is used to fix the position of the flexible expansion tube away from the rigid tube 31. The top of the water intake tube 6 is located on the top outside of the first cylinder 1, and the bottom is provided with a guide ring 61 that can slide along the length of the guide tube 3.

[0042] When sampling the upper stagnant water layer is required, the first cylinder 1 is placed into one of the sampling holes, and the second cylinder 2 is placed into the next sampling hole. The flexible air-expansion tube 32 is inflated through the air inlet on the rigid pipe 31, causing it to expand and become horizontal. Then, the positioning mechanism 4 inside the second cylinder 2 fixes the end of the flexible air-expansion tube 32 away from the rigid pipe 31. This allows the guide pipe 3 to guide the movement path of the water intake pipe 6. After the guide ring 61 at the bottom of the water intake pipe 6 passes through the rigid pipe 31 and the bend section 33 and reaches the flexible air-expansion tube 32, it can move along the length of the flexible air-expansion tube 32 within the upper stagnant water layer, thus reaching the designated sampling location. Because the water intake pipe 6 can sample between two sampling holes, the distance between adjacent sampling holes can be increased, thereby reducing the number of sampling holes drilled and improving sampling efficiency.

[0043] Reference Figure 2 As shown, the first support 11 is equipped with an air pump 8 and a water pump 9. The air pump 8 is connected to the air inlet 311 of the rigid tube 31 through the air inlet pipe 81, so as to inflate the flexible air expansion tube 32 to make the flexible air expansion tube 32 expand to a horizontal state. The water pump 9 is connected to the water intake pipe 6 through the water intake pipe 91. When the bottom end of the water intake pipe 6 moves to the designated position along the length of the flexible air expansion tube 32, the water pump 9 can pump the upper stagnant water at the corresponding position to the outside of the sampling hole, so that the staff can obtain the sample.

[0044] Reference Figure 2 , Figure 4As shown, the positioning mechanism 4 includes two positioning frames 41. Each positioning frame 41 has a clamping plate 42 on its side facing each other, used to clamp the flexible air expansion tube 32. A drive cylinder 43 is positioned between the two positioning frames 41. Before the flexible air expansion tube 32 reaches the position of the positioning mechanism 4, the distance between the two positioning frames 41 is at its maximum, and the two clamping plates 42 are in a separated state. When the end of the flexible air expansion tube 32 reaches the position of the positioning mechanism 4, the drive cylinder 43 is activated, causing the two positioning frames 41 to move towards each other. The two clamping plates 42 then clamp the flexible air expansion tube 32 on its upper and lower sides respectively, thus achieving a fixing effect. To improve the overall structural stability of the positioning mechanism 4, a telescopic rod is also connected between the two positioning frames 41. When the two positioning frames 41 move towards or away from each other, the telescopic rod can extend or shorten, providing support and guidance for the positioning frames 41. It should be noted that the end of the flexible air expansion tube 32 away from the rigid tube 31 is equipped with a solid locking block, which provides high stability when the locking plate 42 is locked onto the solid locking block.

[0045] Reference Figure 3 , Figure 5 As shown, the retraction mechanism 5 includes a retraction rod 51 and a lifting assembly 52. ​​The retraction rod 51 is used to set up the flexible air expansion tube 32 before inflation or after deflation. The lifting assembly 52 is used to drive the retraction rod 51 to move along the length of the first cylinder 1. Before inflation, the flexible air expansion tube 32 is set up on the retraction rod 51. The lifting assembly 52 drives the retraction rod 51 downward to facilitate the placement of the flexible air expansion tube 32 into the sampling hole. During the lowering process, the retraction rod 51 provides some support for the flexible air expansion tube 32, thereby preventing the flexible air expansion tube 32 from getting tangled or twisted during placement. After the sampling process is completed and the flexible air expansion tube 32 is deflated, the lifting assembly 52 drives the retraction rod 51 upward to facilitate the storage of the flexible air expansion tube 32.

[0046] Reference Figure 5As shown, the lifting assembly 52 includes a drive motor 521, a lead screw 522, and a guide rod 523. The lead screw 522 and the guide rod 523 are both vertically arranged outside the first cylinder 1. Both ends of the retracting rod 51 are provided with sleeves 511. One sleeve 511 is threaded to the lead screw 522, and the other sleeve 511 is slidably connected to the guide rod 523. The first cylinder 1 is provided with first fixing blocks 524 at both ends of the lead screw 522. The lead screw 522 is rotatably connected between the two first fixing blocks 524. The drive motor 521 is fixedly arranged on one of the first fixing blocks 524, and the output shaft of the drive motor 521 is fixedly connected to the lead screw 522. The first cylinder 1 is provided with second fixing blocks 525 at both ends of the guide rod 523. The guide rod 523 is fixedly connected between the two second fixing blocks 525. The drive motor 521 is started to drive the lead screw 522 to rotate, which in turn drives the guide rod 523 to move up or down along the length of the lead screw 522 through the sleeve 511, so as to facilitate the retraction and extension of the flexible air expansion tube 32.

[0047] Reference Figure 2 , Figure 3 As shown, a strip-shaped groove is formed at the bottom of the side of the first cylinder 1 and the second cylinder 2 that are close to each other. The elbow section 33 of the rigid tube 31 extends out of the strip-shaped groove of the first cylinder 1. The strip-shaped groove on the second cylinder 2 allows the flexible air expansion tube 32 to enter, so as to facilitate the positioning mechanism 4 to fix the end position of the flexible air expansion tube 32. The retracting rod 51 is a U-shaped rod and can move to below the elbow section 33. When the retracting rod 51 moves downward to below the elbow section 33, it will not obstruct the movement of the flexible air expansion tube 32 and the propulsion mechanism 7.

[0048] Reference Figure 2 As shown, the first cylinder 1 is equipped with a first lifting member 12 for driving the guide tube 3 to move up and down vertically, and the second cylinder 2 is equipped with a second lifting member 22 for driving the positioning mechanism 4 to move up and down vertically. Simultaneously activating the first lifting member 12 and the second lifting member 22 drives the guide tube 3 and the positioning mechanism 4 to move downwards, thereby enabling the horizontal part at the bottom of the water intake pipe 6 to move up and down inside the upper stagnant water, thus reaching the designated depth for sampling.

[0049] Reference Figure 4 , Figure 6As shown, the first lifting component 12 includes a first fixed seat 121, a first electric cylinder 122, and a movable seat 123. The first fixed seat 121 is fixedly disposed inside the first cylinder 1. The cylinder barrel of the first electric cylinder 122 is fixedly connected to the first fixed seat 121. The movable seat 123 is disposed on the piston rod of the first electric cylinder 122. The top end of the rigid tube 31 is fixedly connected inside the movable seat 123. The second lifting component 22 includes a second fixed seat 221 and a second electric cylinder 222. The second fixed seat 221 is fixedly disposed inside the second cylinder 2. The cylinder barrel of the second electric cylinder 222 is fixedly connected to the second fixed seat 221. The piston rod of the second electric cylinder 222 is fixedly connected to one of the positioning frames 41.

[0050] Reference Figure 6 As shown, the propulsion mechanism 7 is slidably disposed at the bottom of the first cylinder 1 along the length direction of the first cylinder 1, and is fixedly connected to the movable seat 123 by the connecting rod 73. When the guide tube 3 moves downward, the propulsion mechanism 7 can move synchronously, so that the propulsion mechanism 7 and the water intake pipe 6 move synchronously, and can continue to propel the horizontal part of the water intake pipe 6 after the water intake pipe 6 enters the specified depth.

[0051] Reference Figure 6 , Figure 7 As shown, the propulsion mechanism 7 includes a propulsion component 71 for pushing the water intake pipe 6 and a flipping component 72 for driving the propulsion component 71 to flip; the water intake pipe 6 has a plurality of flanges 62 distributed along its own length direction, and the propulsion component 71 can push the flanges 62 to make the water intake pipe 6 slide along the length direction of the flexible air expansion tube 32. When the water intake pipe 6 is placed into the first cylinder 1, the bottom end of the water intake pipe 6 moves vertically downwards, and the guide ring 61 moves along the length of the guide tube 3. When the guide ring 61 passes the bend section 33 and reaches the flexible air expansion tube 32, the end of the water intake pipe 6 will move a distance along the flexible air expansion tube 32. Then, the bottom end of the water intake pipe 6 is prone to curling and stacking, and cannot continue to slide smoothly along the length of the flexible air expansion tube 32. At this time, the flipping component 72 drives the propulsion component 71 to flip to a horizontal state, and then the propulsion component 71 pushes the flange 62 on the water intake pipe 6, so that the end of the water intake pipe 6 can continue to slide along the flexible air expansion tube 32 to the designated position, so as to facilitate sampling at different positions.

[0052] Reference Figure 7 , Figure 8As shown, the tilting assembly 72 includes a support base 721, a rotating base 722, and a worm gear mechanism 723. The support base 721 is located at the bottom of the first cylinder 1. The rotating base 722 is rotatably mounted on the support base 721. The worm gear mechanism 723 is located at the bottom of the support base 721 and can drive the rotating base 722 to rotate. The cylinder of the propulsion cylinder 711 is fixedly mounted at the end of the rotating base 722 away from the support base 721. The propulsion assembly 71 includes a propulsion cylinder 711, a propulsion block 712, a telescopic block 713, and a retaining spring 714. The propulsion block 712 is fixedly connected to the piston rod of the propulsion cylinder 711. The side of the propulsion block 712 facing the flexible air expansion tube 32 has a telescopic groove. The telescopic block 713 is slidably connected in the telescopic groove. One end of the retaining spring 714 is connected to the bottom wall of the telescopic groove, and the other end is connected to the telescopic block 713. The worm gear mechanism 723 drives the rotating seat 722 to rotate to a horizontal state, which in turn drives the propulsion assembly 71 to rotate to a horizontal state. During this process, the bottom of the water intake pipe 6 can be bent to a horizontal state. Then, the propulsion cylinder 711 drives the propulsion block 712 to move, which can push the flange 62 on the water intake pipe 6.

[0053] Reference Figure 8 As shown, flange 62 has a first plane 621 and a first arcuate surface 622, and telescopic block 713 has a second plane 7131 and a second arcuate surface 7132. When the piston rod of the push cylinder 711 moves outward from the cylinder, the second plane 7131 on the telescopic block 713 abuts against the first plane 621 of flange 62, and the telescopic block 713 can drive flange 62 to move so as to move the water intake pipe 6 forward a certain distance. When the piston rod of the push cylinder 711 moves inward from the cylinder, the second arcuate surface 7132 on the telescopic block 713 abuts against the first arcuate surface 622 of flange 62, and the telescopic block 713 can slide inward from the push block 712. During this process, flange 62 will not move under the drive of telescopic block 713.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sampling device for upper-layer perched water in hydrogeological exploration, characterized in that, include: The first cylinder (1) is arranged vertically, and the top of the first cylinder (1) is provided with a first support (11); The second cylinder (2) is arranged parallel to the first cylinder (1) and has a gap between them. The top of the second cylinder (2) is provided with a second support (21). The guide tube (3) includes a rigid tube (31) and a flexible air expansion tube (32) that are interconnected. The rigid tube (31) is located inside the first cylinder (1). The bottom end of the rigid tube (31) is provided with a bend section (33). The flexible air expansion tube (32) is located on the bend section (33). The top of the rigid tube (31) is provided with an air inlet (311). The flexible air expansion tube (32) is in a horizontal state after being inflated. Positioning mechanism (4) is set inside the second cylinder (2). The positioning mechanism (4) includes two positioning frames (41). Each of the two positioning frames (41) is provided with a clamping plate (42) for clamping the flexible air expansion tube (32) on the side that is close to each other. A drive electric cylinder (43) is provided between the two positioning frames (41). The retraction mechanism (5) includes a retraction rod (51) and a lifting assembly (52). The retraction rod (51) is used to set up the flexible air expansion tube (32) before inflation or after deflation. The lifting assembly (52) is used to drive the retraction rod (51) to move along the length direction of the first cylinder (1). Water intake pipe (6), the bottom end of which is provided with a guide ring (61) that can slide along the length direction of the guide pipe (3); The propulsion mechanism (7) includes a propulsion assembly (71) for pushing the water intake pipe (6) and a flipping assembly (72) for driving the propulsion assembly (71) to flip. The water intake pipe (6) has multiple flanges (62) distributed along its own length direction, and the propulsion component (71) is used to push the flanges (62) so that the water intake pipe (6) slides along the length direction of the flexible air expansion pipe (32); The propulsion assembly (71) includes a propulsion cylinder (711), a propulsion block (712), a telescopic block (713), and a retaining spring (714). The propulsion block (712) is fixedly connected to the piston rod of the propulsion cylinder (711). The side of the propulsion block (712) facing the flexible air tube (32) has a telescopic groove. The telescopic block (713) is slidably connected in the telescopic groove. One end of the retaining spring (714) is connected to the bottom wall of the telescopic groove, and the other end is connected to the telescopic block (713).

2. The upper-layer perched water sampling device for hydrogeological exploration according to claim 1, characterized in that, The flange (62) has a first plane (621) and a first arcuate surface (622), and the telescopic block (713) has a second plane (7131) and a second arcuate surface (7132); When the second plane (7131) abuts against the first plane (621), the telescopic block (713) can drive the flange (62) to move. When the second arcuate surface (7132) abuts against the first arcuate surface (622), the telescopic block (713) can slide into the push block (712).

3. The upper-layer perched water sampling device for hydrogeological exploration according to claim 1, characterized in that, The flipping assembly (72) includes a support base (721), a rotating base (722), and a worm gear mechanism (723). The support base (721) is located at the bottom of the first cylinder (1). The rotating base (722) is rotatably mounted on the support base (721). The worm gear mechanism (723) is located at the bottom of the support base (721) and can drive the rotating base (722) to rotate. The cylinder of the propulsion electric cylinder (711) is fixedly mounted at one end of the rotating base (722) away from the support base (721).

4. The upper-layer perched water sampling device for hydrogeological exploration according to claim 1, characterized in that, The first cylinder (1) is provided with a first lifting member (12) for driving the guide tube (3) to rise and fall in the vertical direction. The first lifting member (12) includes a first fixed seat (121), a first electric cylinder (122) and a movable seat (123). The first fixed seat (121) is fixedly installed in the first cylinder (1). The cylinder of the first electric cylinder (122) is fixedly connected to the first fixed seat (121). The movable seat (123) is installed on the piston rod of the first electric cylinder (122). The top end of the rigid tube (31) is fixedly connected to the movable seat (123).

5. The upper-layer perched water sampling device for hydrogeological exploration according to claim 4, characterized in that, The second cylinder (2) is provided with a second lifting member (22) for driving the positioning mechanism (4) to rise and fall in the vertical direction. The second lifting member (22) includes a second fixed seat (221) and a second electric cylinder (222). The second fixed seat (221) is fixedly installed in the second cylinder (2). The cylinder of the second electric cylinder (222) is fixedly connected to the second fixed seat (221). The piston rod of the second electric cylinder (222) is fixedly connected to one of the positioning frames (41).

6. The upper-layer perched water sampling device for hydrogeological exploration according to claim 4, characterized in that, The propulsion mechanism (7) is slidably disposed at the bottom of the first cylinder (1) along the length direction of the first cylinder (1) and is fixedly connected to the movable seat (123) by the connecting rod (73).

7. The upper-layer perched water sampling device for hydrogeological exploration according to claim 1, characterized in that, The lifting assembly (52) includes a drive motor (521), a lead screw (522), and a guide rod (523). The lead screw (522) and the guide rod (523) are both vertically arranged outside the first cylinder (1). Both ends of the retracting rod (51) are provided with sleeves (511). One of the sleeves (511) is threaded to the lead screw (522), and the other sleeve (511) is slidably connected to the guide rod (523). First fixing blocks (524) are provided on the first cylinder (1) at both ends of the lead screw (522). The lead screw (522) is rotatably connected between the two first fixing blocks (524). The drive motor (521) is fixedly mounted on one of the first fixing blocks (524) and the output shaft of the drive motor (521) is fixedly connected to the lead screw (522). Second fixing blocks (525) are provided on the first cylinder (1) at both ends of the guide rod (523). The guide rod (523) is fixedly connected between the two second fixing blocks (525).

8. The upper-layer perched water sampling device for hydrogeological exploration according to claim 7, characterized in that, The bottom of the first cylinder (1) and the second cylinder (2) on the side close to each other is provided with a strip groove, the elbow section (33) of the rigid tube (31) extends out of the strip groove, and the retracting rod (51) is a U-shaped rod that can move to below the elbow section (33).

9. The upper-layer perched water sampling device for hydrogeological exploration according to claim 1, characterized in that, An air pump (8) and a water pump (9) are provided on the outside of the first bracket (11). The air pump (8) is connected to the air inlet (311) of the rigid pipe (31) through the air inlet pipe (81), and the water pump (9) is connected to the water intake pipe (6) through the water intake pipe (91).

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