Underground water fixed-depth sampling device based on hydrogeological survey

Abstract

The invention belongs to the technical field of sampling devices, particularly relates to an underground water fixed-depth sampling device based on hydrogeological survey, and aims to solve the problem that the lowering height of the sampling device can be calculated according to obtained data only by measuring the distance from the water surface to the ground by using a distance measuring tool before sampling. A depth keeping module and a flow guide protection module are arranged outside the sampling cylinder main body, a filter plate is fixedly connected to the inner wall of the sampling cylinder main body, the same cleaning module is arranged in the sampling cylinder main body and on the filter plate, the depth keeping module comprises a mounting floating plate and two mutually symmetrical sliding rail seats, and the mounting floating plate is arranged at the top of the sampling cylinder main body. According to the underground water depth-keeping sampling device based on hydrogeological survey, the sampling cylinder can be stopped after descending to the specified depth under the water surface through the depth-keeping module, and the distance from the water surface to the ground does not need to be measured by using a distance measuring tool.

Description

Technical Field

[0001] The invention relates to the technical field of sampling devices, and in particular to a groundwater fixed-depth sampling device based on hydrogeological survey. Background Art

[0002] Groundwater sampling is an important task to obtain groundwater samples for water quality analysis and other research. Before sampling, it is necessary to understand the geological and hydrogeological data of the sampling area, including the stratigraphic structure, aquifer distribution, groundwater flow direction, etc., and to collect information such as the distribution of surrounding pollution sources and land use. Then, according to the sampling purpose and analysis project, prepare appropriate sampling equipment, such as bele tubes, submersible pumps, etc., to ensure that the equipment is clean and pollution-free. Then, according to the research purpose and regional characteristics, the sampling points are reasonably arranged, considering factors such as the flow direction of groundwater and the distribution of aquifers. Generally, control points are set up upstream of the groundwater and several monitoring points are set up downstream. Before sampling, the well needs to be washed to remove impurities and dead water in the well. According to the depth and thickness of the aquifer, tools such as sounding ropes are used to determine the sampling depth to ensure that representative water samples are collected.

[0003] In the prior art, after the sampling hole is drilled, when it is necessary to sample groundwater at a certain depth below the water surface, it is necessary to first use a distance measuring tool to measure the distance from the water surface to the ground before the lowering height of the sampling device can be calculated based on the obtained data. The process is relatively cumbersome, affecting work efficiency and use effect. Summary of the invention

[0004] The present invention discloses a groundwater fixed-depth sampling device based on hydrogeological survey, which aims to solve the technical problem in the background technology that when sampling of groundwater at a certain depth below the water surface is required, a distance measuring tool needs to be used to measure the distance from the water surface to the ground before the lowering height of the sampling device can be calculated based on the obtained data.

[0005] The present invention proposes a groundwater fixed depth sampling device based on hydrogeological survey, including a sampling barrel main body, a depth setting module and a diversion protection module are arranged on the outside of the sampling barrel main body, and a filter plate is fixedly connected to the inner wall of the sampling barrel main body, and the same cleaning module is arranged inside the sampling barrel main body and on the filter plate, the depth setting module includes a mounting float and two mutually symmetrical slide rail seats, the mounting float is arranged on the top of the sampling barrel main body, and the two slide rail seats are fixedly connected to the outside of the sampling barrel main body, one side of the two slide rail seats is fixedly connected to a pressure sensor, the diversion protection module includes a plurality of guide rail members and arc-shaped guide plates distributed equidistantly around the circumference, the plurality of guide rail members are fixedly connected to the outside of the sampling barrel main body, and the plurality of arc-shaped guide plates are arranged on one side of the corresponding guide rail members, the cleaning module includes a rotating member, and a circular hole is opened on the rotating member, a rotating rod is movably connected in the circular hole, and a cleaning roller is fixedly connected to the outside of the rotating rod.

[0006] In a preferred solution, both of the slide rail seats are slidably connected to a sliding seat, one side of the two sliding seats is fixedly connected to a clamping seat, and the bottom of the two sliding seats is fixedly connected to a spring rod, and the ends of the multiple spring rods away from the sliding seat are fixedly connected to the corresponding slide rail seat.

[0007] In a preferred solution, the outer wall of the mounting floating plate is fixedly connected to two fixed rods, the two fixed rods are centrally symmetrical, and the outer walls of the two fixed rods are movably connected to movable wheels, the outsides of the two movable wheels are slidably connected to sliding wheels, the outsides of the two sliding wheels are surrounded by pulling belts, the ends of the two pulling belts away from the sliding wheels are fixedly connected to clamping joints, the two clamping joints are clamped to corresponding clamping seats, grooves are opened on the two fixed rods, and coil springs are fixedly connected in the two grooves, and the ends of the two coil springs away from the fixed rods are fixedly connected to the inner walls of the corresponding movable wheels.

[0008] In a preferred solution, two springs 1 are fixedly connected to the inner walls on both sides opposite to each other of the mounting float plate, and the two springs 1 located on the same side are fixedly connected to the same arc-shaped plate at one end away from the mounting float plate, and the outer walls on the opposite sides of the two arc-shaped plates are fixedly connected to multiple springs 2 with circumferential equidistant spacing, and the multiple springs 2 located in the same row are fixedly connected to the same mounting frame at one end away from the arc-shaped plate, and the inner walls of the multiple mounting frames are fixedly connected to multiple equidistant thin rods, and the outer walls of the multiple thin rods are movably connected to balls.

[0009] In a preferred solution, a mounting hole is opened on the top of the sampling cylinder body, a connecting pipe is fixedly connected in the mounting hole, and a piston plate is slidably connected to the inner wall of the sampling cylinder body.

[0010] By providing a fixed depth module, a pulling belt with a length corresponding to the required depth under the water surface is wrapped around and fixed on the outside of the sliding wheel, and then the sliding wheel is slidably connected to the outside of the movable wheel, and the clamping joint is connected to the clamping seat. When the sampling tube body is lowered into the water, the sampling tube body pulls the pulling belt to descend, and the ball rolls tightly against the outside of the connecting pipe under the push of spring one and spring two, which limits and fixes the mounting float while reducing the wear on the connecting pipe. The movable wheel rotates to overcome the elastic action of the winding spring. When the specified depth under the water surface is reached, the pulling belt is unwound and stops descending, and the sliding seat is pulled to trigger the pressure sensor, and the sampling tube body stops descending. The sampling tube can stop after descending to the specified depth under the water surface. There is no need to use a distance measuring tool to first measure the distance from the water surface to the ground, thereby improving the working efficiency and convenience of the device.

[0011] In a preferred embodiment, an annular groove is provided on the sampling barrel body, a gear ring 1 is movably connected in the annular groove, and a plurality of guide rail members are provided with rotating holes, a bidirectional threaded rod is movably connected in the plurality of rotating holes, a plurality of bidirectional threaded rods are fixedly connected with a gear 1 at one end close to the gear ring 1, and a plurality of gears 1 are meshed with the gear ring 1, a driving motor is fixedly connected to one side of the sampling barrel body, and an output end of the driving motor is fixedly connected to one end of the corresponding bidirectional threaded rod.

[0012] In a preferred solution, one side of each of the guide rail members is fixedly connected to a mounting platform, each of the mounting platforms is movably connected to two mutually symmetrical support rods, and the outsides of each of the multiple bidirectional threaded rods are threadedly connected to two mutually symmetrical sliding blocks, each of the multiple sliding blocks is movably connected to a connecting rod, and one end of each of the connecting rods away from the sliding block is movably connected to the corresponding support rod.

[0013] In a preferred solution, one side of each of the plurality of arc-shaped guide plates is fixedly connected to a slide rail member, a plurality of slide rail members are provided with fixing holes, a plurality of fixing holes are fixedly connected to a limiting rod, the outsides of the plurality of limiting rods are slidably connected to two sliding members, and the ends of the plurality of support rods away from the mounting platform are movably connected to the corresponding sliding members, one side of the plurality of sliding members is fixedly connected to a spring three, and the ends of the plurality of springs three away from the sliding members are fixedly connected to the inner wall of the corresponding slide rail member.

[0014] By providing a diversion protection module, a driving motor is used to rotate the bidirectional threaded rod, which drives one of the gears to rotate, engages with the rotating gear ring to make all the bidirectional threaded rods rotate synchronously, drives the sliding block to slide, and pushes the supporting rod through the connecting rod to open the arc-shaped guide plate, change the direction of the water flow, and guide the water flow to both sides, thereby reducing the impact force on the sampling tube body.

[0015] In a preferred solution, a universal motor and a fixed platform are fixedly connected to the bottom of the filter plate, and an output end of the universal motor is fixedly connected to a rotating member, and the rotating member is movably connected to an inner wall of the fixed platform.

[0016] In a preferred solution, the inner wall of the sampling tube body is fixedly connected with a second gear ring, and the end of the rotating rod away from the rotating member is fixedly connected with a second gear, and the second gear and the second gear ring are meshed with each other.

[0017] By providing a cleaning module, the rotating part is rotated by a universal motor to drive the rotating rod and gear 2 to move in a circle. Since the gear ring 2 and gear 2 are meshed with each other, gear 2 drives the rotating rod and the cleaning roller to rotate, so that the surface of the filter plate can be continuously cleaned to prevent the filter plate from being blocked by soil and impurities, thereby ensuring the cleanliness of the collected samples.

[0018] From the above, it can be seen that when it is necessary to sample groundwater at a certain depth below the water surface, the depth-fixed module can make the sampling tube stop after it descends to the specified depth below the water surface. There is no need to use a distance-measuring tool to first measure the distance from the water surface to the ground, thereby improving the working efficiency and convenience of the device. At the same time, when the sampling tube is in the groundwater, the diversion protection module can change the direction of the water flow and guide the water flow to both sides, thereby reducing the impact force on the main body of the sampling tube and avoiding large shaking of the sampling tube to cause adverse effects on the sampling. In addition, during the sampling process, the cleaning module can continuously clean the surface of the filter plate to avoid clogging the filter plate with soil impurities, thereby ensuring the cleanliness of the collected samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a groundwater fixed-depth sampling device based on hydrogeological survey proposed by the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of a sampling tube body of a groundwater fixed depth sampling device based on hydrogeological survey proposed by the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of a depth-determining module of a groundwater depth-determining sampling device based on hydrogeological survey proposed in the present invention.

[0022] Figure 4 This is a schematic diagram of the internal structure of the movable wheel of the depth-fixing module of the groundwater depth-fixing sampling device based on hydrogeological survey proposed by the present invention.

[0023] Figure 5 This is a schematic structural diagram of a diversion protection module of a groundwater fixed depth sampling device based on hydrogeological survey proposed in the present invention.

[0024] Figure 6 This is a structural schematic diagram of the guide rail components of a diversion protection module of a groundwater fixed depth sampling device based on hydrogeological survey proposed by the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of a cleaning module of a groundwater fixed-depth sampling device based on hydrogeological survey proposed by the present invention.

[0026] In the figure: 1. Sampling tube body; 2. Connecting tube; 3. Filter plate; 4. Piston plate; 5. Depth-fixing module; 501. Mounting floating plate; 502. Slide rail seat; 503. Pressure sensor; 504. Sliding seat; 505. Spring rod; 506. Snap-on seat; 507. Snap-on joint; 508. Pulling belt; 509. Fixing rod; 510. Movable wheel; 511. Coil spring; 512. Sliding wheel; 513. Spring 1; 514. Arc plate; 515. Spring 2; 516. Mounting frame; 517. Ball bearing; 6. Flow diversion protection module ;601, gear ring one; 602, guide rail part; 603, bidirectional threaded rod; 604, mounting table; 605, drive motor; 606, gear one; 607, sliding block; 608, connecting rod; 609, support rod; 610, slide rail part; 611, arc guide plate; 612, limit rod; 613, sliding part; 614, spring three; 7, cleaning module; 701, gear ring two; 702, universal motor; 703, fixed table; 704, rotating part; 705, rotating rod; 706, gear two; 707, cleaning roller. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] The invention discloses a groundwater fixed-depth sampling device based on hydrogeological survey, which is mainly used in scenarios where it is necessary to sample groundwater at a certain depth below the water surface, and the distance from the water surface to the ground needs to be measured using a distance measuring tool before the height of the sampling device can be calculated based on the obtained data.

[0029] Reference Figure 1-Figure 7 , a groundwater fixed depth sampling device based on hydrogeological survey, comprising a sampling tube body 1, a fixed depth module 5 and a diversion protection module 6 are arranged on the outside of the sampling tube body 1, and a filter plate 3 is fixedly connected to the inner wall of the sampling tube body 1, and the same cleaning module 7 is arranged inside the sampling tube body 1 and on the filter plate 3, the fixed depth module 5 comprises a mounting float 501 and two mutually symmetrical slide rail seats 502, the mounting float 501 is arranged on the top of the sampling tube body 1, and the two slide rail seats 502 are fixedly connected to the outside of the sampling tube body 1, and the two A pressure sensor 503 is fixedly connected to one side of each slide rail seat 502, the diversion protection module 6 includes a plurality of guide rail members 602 and an arc-shaped guide plate 611 which are equidistantly distributed in a circle, the plurality of guide rail members 602 are fixedly connected to the outside of the sampling tube body 1, and the plurality of arc-shaped guide plates 611 are arranged on one side of the corresponding guide rail member 602, the cleaning module 7 includes a rotating member 704, and a circular hole is opened on the rotating member 704, a rotating rod 705 is movably connected in the circular hole, and a cleaning roller 707 is fixedly connected to the outside of the rotating rod 705.

[0030] Reference Figure 1 , Figure 3 and Figure 4 , the two slide rail seats 502 are slidably connected to a sliding seat 504, one side of the two slide seats 504 is fixedly connected to a clamping seat 506, and the bottom of the two slide seats 504 is fixedly connected to a spring rod 505, and one end of the multiple spring rods 505 away from the sliding seat 504 is fixedly connected to the corresponding slide rail seat 502.

[0031] Reference Figure 1 , Figure 3 and Figure 4 Two fixed rods 509 are fixedly connected to the outer wall of the floating plate 501, and the two fixed rods 509 are centrally symmetrical, and the outer walls of the two fixed rods 509 are movably connected with movable wheels 510, the outsides of the two movable wheels 510 are slidably connected with sliding wheels 512, and the outsides of the two sliding wheels 512 are surrounded by pulling belts 508, and the ends of the two pulling belts 508 away from the sliding wheels 512 are fixedly connected with clamping joints 507, and the two clamping joints 507 are clamped in the corresponding clamping seats 506, and grooves are opened on the two fixed rods 509, and coil springs 511 are fixedly connected in the two grooves, and the ends of the two coil springs 511 away from the fixed rods 509 are fixedly connected to the inner walls of the corresponding movable wheels 510.

[0032] Reference Figure 1 , Figure 3 and Figure 4 Two spring ones 513 are fixedly connected to the inner walls on both sides opposite to each other of the mounting float plate 501, and the ends of the two spring ones 513 on the same side away from the mounting float plate 501 are fixedly connected to the same arc-shaped plate 514, the outer walls on the opposite sides of the two arc-shaped plates 514 are fixedly connected to a plurality of spring twos 515 with equidistant circumferences, and the ends of the plurality of spring twos 515 in the same row away from the arc-shaped plate 514 are fixedly connected to the same mounting frame 516, the inner walls of the plurality of mounting frames 516 are fixedly connected to a plurality of equidistant thin rods, and the outer walls of the plurality of thin rods are movably connected to balls 517.

[0033] Reference Figure 1 and Figure 2 A mounting hole is provided on the top of the sampling tube body 1, a connecting tube 2 is fixedly connected in the mounting hole, and a piston plate 4 is slidably connected to the inner wall of the sampling tube body 1.

[0034] In a specific application scenario, a pulling belt 508 with a length corresponding to the required underwater depth is wound around and fixed to the outside of the sliding wheel 512. Then, the sliding wheel 512 is slidably connected to the outside of the movable wheel 510, and the clamping head 507 is connected to the clamping seat 506. When the sampling cylinder main body 1 is lowered into the water, at this time, the mounting floating plate 501 floats on the water surface due to its own buoyancy. The sampling cylinder main body 1 pulls the pulling belt 508 to continue to descend. The ball 517 rolls tightly against the outside of the connecting pipe 2 under the push of the first spring 513 and the second spring 515, limiting and fixing the mounting floating plate 501 while reducing the wear on the connecting pipe 2. The movable wheel 510 rotates against the elastic action of the coil spring 511. When reaching the specified depth below the water surface, the pulling belt 508 stops unwinding and descending. Pull the sliding seat 504 to trigger the pressure sensor 503, and the sampling cylinder main body 1 stops descending. It can make the sampling cylinder stop after descending to the specified depth below the water surface without using a ranging tool to measure the distance from the water surface to the ground first.

[0035] Refer to Figure 1 、 Figure 5 and Figure 6 , a circular groove is formed on the sampling cylinder main body 1. A first toothed ring 601 is movably connected in the circular groove. And rotation holes are formed on multiple guide members 602. A bidirectional threaded rod 603 is movably connected in each rotation hole. A first gear 606 is fixedly connected to one end of each of the multiple bidirectional threaded rods 603 close to the first toothed ring 601. All the first gears 606 are meshed with the first toothed ring 601. A drive motor 605 is fixedly connected to one side of the sampling cylinder main body 1. The output end of the drive motor 605 is fixedly connected to one end of the corresponding bidirectional threaded rod 603.

[0036] Refer to Figure 1 、 Figure 5 and Figure 6 , a mounting table 604 is fixedly connected to one side of each of the multiple guide members 602. Two symmetrically arranged support rods 609 are movably connected to each of the multiple mounting tables 604. And two symmetrically arranged sliding blocks 607 are threadedly connected to the outside of each of the multiple bidirectional threaded rods 603. A connecting rod 608 is movably connected to each of the multiple sliding blocks 607. One end of each of the multiple connecting rods 608 away from the sliding block 607 is movably connected to the corresponding support rod 609.

[0037] Refer to Figure 1 、 Figure 5 and Figure 6One side of the multiple arc-shaped guide plates 611 is fixedly connected with a slide rail member 610, and the multiple slide rail members 610 are provided with fixing holes. The multiple fixing holes are fixedly connected with a limiting rod 612, and the outside of the multiple limiting rods 612 is slidably connected with two sliding members 613, and the ends of the multiple support rods 609 away from the mounting platform 604 are movably connected to the corresponding sliding members 613, and one side of the multiple sliding members 613 is fixedly connected with a spring three 614, and the ends of the multiple spring three 614 away from the sliding members 613 are fixedly connected to the inner wall of the corresponding slide rail member 610.

[0038] In a specific application scenario, the bidirectional threaded rod 603 is rotated by driving the motor 605, driving one of the gears 606 to rotate, engaging the rotating gear ring 601 to make all the bidirectional threaded rods 603 rotate synchronously, driving the sliding block 607 to slide, and pushing the support rod 609 through the connecting rod 608 to open the arc-shaped guide plate 611, changing the direction of the water flow, directing the water flow to both sides, and reducing the impact force on the sampling tube body 1.

[0039] Reference Figure 1 , Figure 2 and Figure 7 The bottom of the filter plate 3 is fixedly connected with a universal motor 702 and a fixed platform 703 , and the output end of the universal motor 702 is fixedly connected with a rotating member 704 , and the rotating member 704 is movably connected to the inner wall of the fixed platform 703 .

[0040] Reference Figure 1 , Figure 2 and Figure 7 The inner wall of the sampling tube body 1 is fixedly connected with a second gear ring 701 , and the end of the rotating rod 705 away from the rotating member 704 is fixedly connected with a second gear 706 , and the second gear 706 and the second gear ring 701 are meshed with each other.

[0041] In a specific application scenario, the universal motor 702 rotates the rotating part 704, driving the rotating rod 705 and the gear 2 706 to move in a circle. Since the gear ring 2 701 and the gear 2 706 are meshed with each other, the gear 2 706 drives the rotating rod 705 and the cleaning roller 707 to rotate, so as to continuously clean the surface of the filter plate 3, prevent the filter plate 3 from being blocked by dirt and impurities, and ensure the cleanliness of the collected samples.

[0042] Working principle: After the sampling hole is opened, when it is necessary to sample groundwater at a certain depth below the water surface, the pulling belt 508 of a length corresponding to the required depth below the water surface is fixed around the outside of the sliding wheel 512, and then the sliding wheel 512 is slidably connected to the outside of the movable wheel 510, and the clamping joint 507 is connected to the clamping seat 506, and the sampling tube body 1 is lowered into the groundwater through the connecting pipe 2. At this time, the installation float 501 floats on the water surface due to its own buoyancy, and the sampling tube body 1 pulls the pulling belt 508 to move the sampling tube body 1. The pulling belt 508 continues to descend, and the ball 517 rolls closely against the outside of the connecting pipe 2 under the push of the spring 1 513 and the spring 2 515, which limits and fixes the mounting float 501 while reducing the wear on the connecting pipe 2. The pulling belt 508 drives the movable wheel 510 to rotate through the sliding wheel 512 to overcome the elastic effect of the coil spring 511, so that the coil spring 511 begins to store energy. When it reaches the specified depth under the water surface, the pulling belt 508 is unwound and stops descending, and the sliding seat 504 is pulled by the clamping seat 506. The stretch spring rod 505 slides, causing the sliding seat 504 to trigger the pressure sensor 503, and the sampling tube body 1 stops descending. The driving motor 605 is started to rotate the bidirectional threaded rod 603, driving one of the gears 606 to rotate, and the meshing rotating gear ring 1 601 makes all the bidirectional threaded rods 603 rotate synchronously, driving the sliding block 607 to slide, and pushing the support rod 609 through the connecting rod 608 to open the arc guide plate 611, changing the direction of the water flow, and guiding the water flow to both sides to reduce the impact force on the sampling tube body 1, and starting the universal motor 702 to rotate the rotating member 704, driving the rotating rod 705 and the gear 2 706 to move in a circle. Since the gear ring 2 701 and the gear 2 706 are meshed with each other, the gear 2 706 drives the rotating rod 705 and the cleaning roller 707 to rotate, and the soil impurities on the surface of the filter plate 3 are cleaned. Negative pressure is generated inside the sampling tube body 1 through the connecting pipe 2, and the piston plate 4 rises under the action of pressure. At the same time, the groundwater is sucked into the interior of the sampling tube body 1 after being filtered by the filter plate 3.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A groundwater fixed depth sampling device based on hydrogeological survey, comprising a sampling tube body (1), characterized in that: The sampling tube body (1) is provided with a depth-fixing module (5) and a flow-guiding protection module (6) on the outside, and a filter plate (3) is fixedly connected to the inner wall of the sampling tube body (1). The same cleaning module (7) is provided inside the sampling tube body (1) and on the filter plate (3). The depth-fixing module (5) comprises a mounting float plate (501) and two mutually symmetrical slide rail seats (502). The mounting float plate (501) is provided on the top of the sampling tube body (1), and the two slide rail seats (502) are both connected to the outside of the sampling tube body (1) by bolts. One side of the two slide rail seats (502) is fixedly connected to the filter plate (3). A pressure sensor (503) is provided. The flow guide protection module (6) comprises a plurality of guide rail members (602) and arc-shaped flow guide plates (611) which are equidistantly distributed around a circle. The plurality of guide rail members (602) are connected to the outside of the sampling tube body (1) by bolts, and the plurality of arc-shaped flow guide plates (611) are arranged on one side of the corresponding guide rail member (602). The cleaning module (7) comprises a rotating member (704), and a circular hole is provided on the rotating member (704). A rotating rod (705) is rotatably connected to the circular hole via a bearing. A cleaning roller (707) is fixedly connected to the outside of the rotating rod (705).

2. A groundwater fixed depth sampling device based on hydrogeological survey according to claim 1, characterized in that: The two slide rail seats (502) are slidably connected to a slide seat (504), one side of the two slide seats (504) is fixedly connected to a clamping seat (506), and the bottom of the two slide seats (504) is fixedly connected to a spring rod (505), and one end of the multiple spring rods (505) away from the slide seat (504) is fixedly connected to the corresponding slide rail seat (502).

3. A groundwater fixed depth sampling device based on hydrogeological survey according to claim 2, characterized in that: The outer wall of the mounting floating plate (501) is fixedly connected to two fixing rods (509), the two fixing rods (509) are centrally symmetrical, and the outer walls of the two fixing rods (509) are movably connected to movable wheels (510), the exteriors of the two movable wheels (510) are slidably connected to sliding wheels (512), the exteriors of the two sliding wheels (512) are surrounded by pulling belts (508), the ends of the two pulling belts (508) away from the sliding wheels (512) are fixedly connected to clamping joints (507), the two clamping joints (507) are clamped to corresponding clamping seats (506), the two fixing rods (509) are provided with grooves, the two grooves are fixedly connected to coil springs (511), and the ends of the two coil springs (511) away from the fixing rods (509) are fixedly connected to the inner walls of the corresponding movable wheels (510).

4. A groundwater fixed depth sampling device based on hydrogeological survey according to claim 3, characterized in that: Two springs 1 (513) are fixedly connected to the inner walls on both sides opposite to each other of the mounting floating plate (501), and the ends of the two springs 1 (513) on the same side away from the mounting floating plate (501) are fixedly connected to the same arc-shaped plate (514), the outer walls on the opposite sides of the two arc-shaped plates (514) are fixedly connected to a plurality of springs 2 (515) equidistant from the circumference, the ends of the plurality of springs 2 (515) on the same row away from the arc-shaped plate (514) are fixedly connected to the same mounting frame (516), the inner walls of the plurality of mounting frames (516) are fixedly connected to a plurality of equidistant thin rods, and the outer walls of the plurality of thin rods are movably connected to balls (517).

5. The groundwater fixed depth sampling device based on hydrogeological survey according to claim 1 is characterized in that: A mounting hole is provided on the top of the sampling cylinder body (1), a connecting pipe (2) is fixedly connected in the mounting hole, and a piston plate (4) is slidably connected to the inner wall of the sampling cylinder body (1).

6. The groundwater fixed depth sampling device based on hydrogeological survey according to claim 1 is characterized in that: The sampling tube body (1) is provided with an annular groove, in which a gear ring 1 (601) is movably connected, and a plurality of guide rail members (602) are provided with rotation holes, in which bidirectional threaded rods (603) are rotatably connected via bearings, and one end of the plurality of bidirectional threaded rods (603) close to the gear ring 1 (601) is fixedly connected to a gear 1 (606), and the plurality of gears 1 (606) are meshed with the gear ring 1 (601), and a driving motor (605) is fixedly connected to one side of the sampling tube body (1), and an output end of the driving motor (605) is fixedly connected to one end of a corresponding bidirectional threaded rod (603).

7. The groundwater fixed depth sampling device based on hydrogeological survey according to claim 6 is characterized in that: One side of each of the plurality of guide rail members (602) is fixedly connected to a mounting platform (604), and each of the plurality of mounting platforms (604) is movably connected to two mutually symmetrical support rods (609), and the exterior of each of the plurality of bidirectional threaded rods (603) is threadedly connected to two mutually symmetrical sliding blocks (607), and each of the plurality of sliding blocks (607) is movably connected to a connecting rod (608), and one end of each of the plurality of connecting rods (608) away from the sliding block (607) is movably connected to a corresponding support rod (609).

8. The groundwater fixed depth sampling device based on hydrogeological survey according to claim 7 is characterized in that: One side of the plurality of arc-shaped guide plates (611) is fixedly connected to a slide rail member (610), a fixing hole is opened on the plurality of slide rail members (610), a limiting rod (612) is fixedly connected in the plurality of fixing holes, the outside of the plurality of limiting rods (612) is slidably connected to two sliding members (613), and one end of the plurality of support rods (609) away from the mounting platform (604) is movably connected to the corresponding sliding member (613), one side of the plurality of sliding members (613) is fixedly connected to a spring three (614), and one end of the plurality of spring three (614) away from the sliding member (613) is fixedly connected to the inner wall of the corresponding slide rail member (610).

9. A groundwater fixed depth sampling device based on hydrogeological survey according to any one of claims 1 to 8, characterized in that: A universal motor (702) and a fixed platform (703) are fixedly connected to the bottom of the filter plate (3), and the output end of the universal motor (702) is fixedly connected to a rotating member (704), and the rotating member (704) is rotatably connected to the inner wall of the fixed platform (703) via a bearing.

10. The groundwater fixed depth sampling device based on hydrogeological survey according to claim 9, characterized in that: The inner wall of the sampling cylinder body (1) is fixedly connected to a second gear ring (701), and one end of the rotating rod (705) away from the rotating member (704) is fixedly connected to a second gear (706), and the second gear (706) and the second gear ring (701) are meshed with each other.

Images