Underground water sampling device

Abstract

The invention relates to the field of underground water sampling equipment, and discloses an underground water sampling device which comprises a base, a winding roller is movably mounted at the top of the base, pull ropes are wound on the outer diameters of the two sides of the winding roller, a drainage pipe is wound on the outer diameter of the middle of the winding roller, and the tail ends of the winding roller are fixedly connected to the two sides of the top end of a probe respectively. An upper cavity is formed in the upper side of the interior of the probe, a sleeve is movably installed in the middle of the interior of the upper cavity, a plurality of water storage tanks are formed in the positions, close to the outer side of the upper cavity, of the interior of the probe, a rotating shaft is movably installed on the lower side of the interior of the upper cavity, and a lower cavity is formed in the lower side of the interior of the probe. According to the underground water sampling device, on one hand, underground water can be pumped out for conventional sampling through the water absorption and drainage effects of the rubber piston, on the other hand, the water storage tank can collect underground water at different water levels to serve as sampling specimens, underground water sampling in multiple modes is achieved, and different sampling requirements are met.

Description

Technical Field

[0001] The invention relates to the field of groundwater sampling equipment, in particular to a groundwater sampling device. Background Art

[0002] Groundwater is an important component of water resources and plays an irreplaceable role in the global water cycle, water supply, and ecosystem maintenance. It is not only an important source of water for agricultural irrigation, industrial water, and domestic water in many regions, but also crucial to maintaining the stability of wetlands, river base flows, and underground ecosystems. With population growth, economic development, and environmental changes, the study and management of groundwater has become increasingly important. Accurately understanding the water level, water quality, water volume, and other information on groundwater will help to rationally develop and utilize groundwater resources, prevent problems such as over-exploitation and pollution of groundwater, and ensure the sustainability of water resources.

[0003] Traditional groundwater level measurement methods may have large errors. For example, some simple measurement tools can only roughly estimate the water level height and cannot provide accurate values. In complex geological conditions or deep groundwater layers, traditional measurement methods are difficult to accurately determine the true location of the water level, which poses a challenge to accurately grasp the reserves and distribution of groundwater resources.

[0004] Many traditional groundwater sampling devices cannot continuously extract groundwater during sampling, and often require multiple operations to obtain sufficient sample volume. For example, some manual pumping equipment can only extract a limited amount of water each time, and requires frequent stops during the pumping process, which not only prolongs the sampling time, but may also affect the representativeness of the sample. At the same time, stratified sampling of groundwater at different depths is the key to in-depth research on groundwater characteristics. However, traditional sampling devices often lack an effective stratified sampling mechanism. Some equipment can only collect groundwater samples at a certain depth or mixed depth, and it is difficult to obtain detailed information on groundwater at different depths. This is a major obstacle to studying the vertical changes in groundwater quality and hydrodynamic conditions.

[0005] In recent years, although some new groundwater sampling technologies and equipment have emerged, there is still room for improvement. Although some sampling equipment with a high degree of automation has improved sampling efficiency, it still needs to be improved in terms of stratified sampling and accurate water level measurement; some equipment is more complex in structural design, resulting in high cost, inconvenient operation or reduced reliability. Therefore, a groundwater sampling device that can accurately measure groundwater levels, efficiently and accurately sample, and protect the sampling environment is needed to meet the growing needs of groundwater research and management. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a groundwater sampling device, which solves the problems of low sampling efficiency and low sampling accuracy of existing sampling equipment and the difficulty of traditional measurement methods in accurately determining the true position of the water level in complex geological conditions or deeper groundwater layers.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A groundwater sampling device, comprising a base, a roller movably mounted on the top of the base, a pull rope is wound on the outer diameters of both sides of the roller, a drain pipe is wound on the outer diameter of the middle part of the roller, the ends of the roller are respectively fixedly connected to the two sides of the top of the probe, an upper chamber is opened on the upper side of the probe, a sleeve is movably mounted on the inner middle part of the upper chamber, a plurality of water storage tanks are opened at the outer position of the probe near the upper chamber, a rotating shaft is movably mounted on the lower side of the upper chamber, a lower chamber is opened at the lower side of the probe, a first fixed plate is fixedly mounted inside the lower chamber, three groups of water inlets are opened inside the first fixed plate, a water outlet is arranged at the inner side of the middle part of the first fixed plate near each water inlet, a first rubber valve is installed inside the water inlet, a second rubber valve is installed at a position near the water outlet on one side of the first fixed plate, and a rubber piston is fixedly mounted at a position near each water inlet on one side of the first fixed plate.

[0008] Preferably, a first motor is fixedly installed on the inner bottom of the base, a driving end of the first motor extends to one side of the base and is fixedly installed with a first driving wheel, a middle part of the roller extends to one side of the base through a movable shaft and is fixedly installed with a first driven wheel, and the outer diameters of the first driving wheel and the first driven wheel are connected by a first synchronous belt.

[0009] Preferably, a diagonal support frame is fixedly installed on the front side of the base, a fixed shaft is fixedly installed on the top of the diagonal support frame, three pulley meter devices are movably installed on the outer diameter of the fixed shaft, and the middle parts of the pull rope and the drainage pipe are both fitted on the outer diameter of the pulley meter devices on the corresponding sides.

[0010] Preferably, a turntable is fixedly connected to the upper outer diameter of the sleeve, a semicircular recessed hole is opened on one side of the turntable, the inner upper side of the water storage tank is connected with the interior of the upper chamber through a connecting hole, a movable rod is movably installed inside the connecting hole, a sealing plug is fixedly connected to the outer end of the movable rod, a round-headed protrusion is fixedly connected to the inner end of the movable rod, a compression spring is fixedly connected to the outer diameter of the movable rod, and the outer end of the compression spring is fixedly connected to the inner wall of the upper chamber.

[0011] Preferably, a worm wheel is fixedly mounted on the lower outer diameter of the sleeve, a worm is fixedly mounted on the middle outer diameter of the rotating shaft, and the inner ends of the worm and the worm wheel are meshingly connected, a second motor is fixedly mounted on the inner bottom of the base, a driving gear is fixedly mounted on the driving end of the second motor, a driven gear is fixedly mounted on the outer diameter of one side of the rotating shaft, and the inner ends of the driven gear and the driving gear are meshingly connected.

[0012] Preferably, a straight slot hole is opened on one side of the bottom of the probe, a counterweight rod is movably installed inside the straight slot hole, a water immersion sensor is fixedly installed on the bottom end of the counterweight rod, and a contact sensor is fixedly installed on the inner top of the straight slot hole.

[0013] Preferably, a second fixed plate is fixedly connected to the interior of the lower chamber at a position close to one side of the first fixed plate, a drain groove is fixedly connected to the middle of the second fixed plate, an end of the drain pipe passes through the interior of the sleeve and extends to the interior of the drain groove, and a water inlet branch pipe is fixedly connected to the other side of the first fixed plate at a position close to each water inlet, the end of the water inlet branch pipe is fixedly connected to one end of a multi-way pipe, and the other end of the multi-way pipe extends to the outside of the probe through the water inlet pipe.

[0014] Preferably, the outer diameter of one side of the rubber piston is fixedly connected to the outside of the three-head clamp, a short shaft is movably installed on one side of the inner part of the lower chamber, an eccentric wheel group is fixedly installed at the end of the short shaft, and the end of the eccentric wheel group is fixedly connected to the middle of the three-head clamp.

[0015] Preferably, a second driving wheel is fixedly mounted on the outer diameter of the other side of the rotating shaft, a second driven wheel is fixedly mounted on the outer diameter of the short shaft, and the outer diameters of the second driving wheel and the second driven wheel are connected via a second synchronous belt.

[0016] Working principle: Move the device to the sampling hole, put the probe into the hole, then start the first motor, drive the first driving wheel to rotate through the first motor, use the transmission of the first synchronous belt to drive the second driving wheel to rotate, thereby driving the roller to rotate, and start lowering the pull rope. At the same time, the pulley meter starts to measure the descending height. As the pull rope is lowered, the probe gradually descends. When the bottom of the probe touches the groundwater, the water immersion sensor will send a signal. Observe the data of the pulley meter to measure the groundwater level data, and start the second motor at the same time. Drive the driving gear to rotate through the second motor, and drive the rotating shaft to rotate through the meshing transmission of the driving gear and the driven gear. The rotating shaft will drive the second driving wheel to rotate, and the transmission of the second synchronous belt will drive the second driven wheel and the short shaft to rotate. When the short shaft rotates, it will drive the eccentric wheel group to rotate, and the eccentric wheel group will drive the three-head clamp to deflect, thereby driving the three rubber pistons to alternately rise and fall. When the rubber piston is compressed, the volume in the cavity decreases, the air pressure increases, the first rubber valve is pressed to close the water inlet, the second rubber valve is pushed open, the water outlet is opened, and the groundwater in the cavity is discharged from the cavity and enters the drainage trough, and then discharged through the drainage pipe. When the rubber piston recovers, the volume in the cavity increases, the air pressure decreases, the external air pressure will press the second rubber valve to close the water outlet and push the first rubber valve open, and the water inlet When the water inlet is opened, the groundwater will enter the cavity of the rubber piston again through the water inlet pipe, the multi-way pipe and the water inlet branch pipe under the effect of atmospheric pressure, and the three rubber pistons will take turns to complete the water absorption and drainage, and the groundwater will be continuously extracted and discharged through the drainage pipe, which is convenient for groundwater sampling. At the same time, when the shaft rotates, it will also drive the worm to rotate. The rotating worm and the worm wheel will mesh and drive the sleeve and the turntable to rotate. When the turntable rotates a certain angle, the semicircular concave hole on the turntable will move to the front of one of the round-headed protrusions, and the compression spring will be used to drive the movable rod to move and press the round-headed protrusion into the semicircular concave hole, and at the same time drive the seal The sealing plug moves inward, thereby opening the corresponding opening on the top of the water tank, and groundwater will enter the water tank. When the turntable continues to rotate, the round-headed protrusion will move out of the semicircular recessed hole, driving the movable rod and the sealing plug to reset and re-seal the water tank. As the probe continues to descend and the turntable continues to rotate, groundwater of different water levels will be introduced into different water tanks. The groundwater in these water tanks can be used as sampling specimens to achieve more detailed sampling of groundwater. When the probe touches the bottom of the groundwater, the counterweight rod will rise and the top will touch the contact sensor. The contact sensor sends a signal, and the external control end receives the information to achieve sampling of the groundwater level depth.

[0017] The present invention provides a groundwater sampling device having the following beneficial effects:

[0018] 1. The three rubber pistons in the device of the present invention are driven by the second motor to achieve alternating ups and downs through a series of transmission structures, so that the rubber pistons can take turns to absorb and drain water, thereby continuously extracting groundwater and discharging it through the drain pipe, ensuring the continuity of the sampling work and improving the sampling efficiency. As the probe descends, the turntable rotates driven by the shaft, so that groundwater at different water levels can enter different water storage tanks respectively. This stratified sampling method can obtain groundwater samples at different depths. On the one hand, through the water absorption and drainage effects of the rubber pistons, groundwater can be extracted for conventional sampling. On the other hand, the water storage tank can collect groundwater at different water levels as sampling specimens, realizing groundwater sampling in various ways and meeting different sampling needs.

[0019] 2. The present invention measures the length of the rope being lowered by a pulley meter. When the bottom of the probe contacts the groundwater, combined with the signal sent by the water immersion sensor, the groundwater level height data can be accurately measured. When the probe touches the bottom of the groundwater, the counterweight rod will rise and the top will contact the contact sensor. The contact sensor sends a signal, and the information is received by the external control terminal to realize the sampling of the groundwater level depth, thereby providing accurate water level and depth information for groundwater research. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the probe in the present invention;

[0022] Figure 3 Schematic diagram of the internal structure of the probe in the present invention;

[0023] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 It is a structural schematic diagram of the turntable in the present invention;

[0025] Figure 6 Schematic diagram of the internal structure of the lower chamber of the present invention;

[0026] Figure 7 It is a schematic diagram of the explosion structure of the lower chamber in the present invention;

[0027] Figure 8 It is a schematic structural diagram of the second fixing plate in the present invention.

[0028] Among them, 1, base; 2, roller; 3, pull rope; 4, drainage pipe; 5, first motor; 6, first driving wheel; 7, first driven wheel; 8, first synchronous belt; 9, probe; 10, diagonal support; 11, fixed shaft; 12, pulley meter; 13, upper chamber; 14, sleeve; 15, turntable; 16, semicircular concave hole; 17, water storage tank; 18, connecting hole; 19, movable rod; 20, sealing plug; 21, round head convex block; 22, compression spring; 23, worm wheel; 24, rotating shaft; 25, worm; 26, second motor; 27, driving Gear; 28, driven gear; 29, second driving wheel; 30, lower chamber; 31, first fixed plate; 32, water inlet; 33, water outlet; 34, first rubber valve; 35, second rubber valve; 36, rubber piston; 37, second fixed plate; 38, drain trough; 39, water inlet branch pipe; 40, multi-way pipe; 41, water inlet pipe; 42, three-head clamp; 43, short shaft; 44, eccentric wheel group; 45, second driven wheel; 46, second synchronous belt; 47, straight slot hole; 48, counterweight rod; 49, water immersion sensor; 50, contact sensor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example:

[0031] Please refer to the attached Figure 1 -Attached Figure 8 , an embodiment of the present invention provides a groundwater sampling device, such as Figure 1As shown, it includes a base 1, which provides a stable supporting foundation for the entire device. A roller 2 is movably installed on the top of the base 1. The roller 2 can rotate flexibly on the base 1. Drawstrings 3 are wound around the outer diameters of both sides of the roller 2. The drawstrings 3 play a connecting and supporting role during the lowering of the probe 9 of the device. A drainage pipe 4 is wound around the outer diameter of the middle part of the roller 2. The drainage pipe 4 is used to discharge the collected groundwater. The ends of the roller 2 are respectively fixedly connected to the two sides of the top of the probe 9. The probe 9 is in direct contact with the groundwater. The key component for sampling operation is that an upper chamber 13 is provided on the upper side of the probe 9, and the upper chamber 13 provides space for the installation and operation of other internal components. A sleeve 14 is movably installed in the middle of the upper chamber 13, and the sleeve 14 can move in the upper chamber 13 of the probe 9 under specific driving. Several water storage tanks 17 are provided in the probe 9 near the outer side of the upper chamber 13. The water storage tanks 17 are used to collect groundwater at different water levels as sampling specimens. There is a rotating shaft 24, which can rotate under the drive of related transmission components. A lower chamber 30 is opened on the lower side of the probe 9. A first fixing plate 31 is fixedly installed inside the lower chamber 30. The first fixing plate 31 plays a role of fixing and separating. Three groups of water inlets 32 are opened inside the first fixing plate 31. The water inlet 32 ​​is a channel for groundwater to enter. A water outlet 33 is provided at the inner side of each water inlet 32 ​​in the middle of the first fixing plate 31. The water outlet 33 is used to discharge the water in the cavity. For groundwater discharge, a first rubber valve 34 is installed inside the water inlet 32, and the first rubber valve 34 can control the opening and closing of the water inlet 32. A second rubber valve 35 is installed on one side of the first fixed plate 31 near the water outlet 33. The second rubber valve 35 is used to control the opening and closing of the water outlet 33. A rubber piston 36 is fixedly installed on one side of the first fixed plate 31 near each water inlet 32. The rubber piston 36 moves under the drive of the relevant transmission structure, thereby realizing the water absorption and drainage functions.

[0032] In this embodiment, a first motor 5 is fixedly installed on the inner bottom of the base 1. The first motor 5 provides a power source for part of the operation of the entire device. The driving end of the first motor 5 extends to one side of the base 1 and is fixedly installed with a first driving wheel 6. The first driving wheel 6 rotates under the drive of the first motor 5. The middle part of the roller 2 extends to one side of the base 1 through a movable shaft and is fixedly installed with a first driven wheel 7. The first driven wheel 7 can rotate together with the roller 2. The outer diameters of the first driving wheel 6 and the first driven wheel 7 are connected by a first synchronous belt 8. Through the transmission action of the first synchronous belt 8, the first motor 5 can drive the first driven wheel 7 to rotate when driving the first driving wheel 6 to rotate, thereby driving the roller 2 to rotate.

[0033] Furthermore, a diagonal support frame 10 is fixedly installed on the front side of the base 1, and the diagonal support frame 10 provides an installation position for the fixed shaft 11. The fixed shaft 11 is fixedly installed on the top of the diagonal support frame 10, and the fixed shaft 11 provides an installation base for the pulley meter 12. Three pulley meter devices 12 are movably installed on the outer diameter of the fixed shaft 11, and the middle parts of the pull rope 3 and the drain pipe 4 are both fitted on the outer diameters of the pulley meter devices 12 on the corresponding sides. The pulley meter device 12 can accurately measure the descent height during the lowering process of the pull rope 3 by fitting with the pull rope 3 and the drain pipe 4.

[0034] Furthermore, a turntable 15 is fixedly connected to the outer diameter of the upper side of the sleeve 14. The turntable 15 rotates with the movement of the sleeve 14. A semicircular concave hole 16 is opened on one side of the turntable 15. The semicircular concave hole 16 cooperates with other components to realize a specific function during the rotation of the turntable 15. The upper side of the interior of the water storage tank 17 is connected to the interior of the upper chamber 13 through a connecting hole 18. The connecting hole 18 provides a channel for groundwater to enter the water storage tank 17. A movable rod 19 is movably installed inside the connecting hole 18. The movable rod 19 can move in the connecting hole 18, the outer end of the movable rod 19 is fixedly connected with a sealing plug 20, the sealing plug 20 is used to close the connecting hole 18, the inner end of the movable rod 19 is fixedly connected with a round head protrusion 21, the round head protrusion 21 cooperates with the semicircular recessed hole 16 on the turntable 15, the outer diameter of the movable rod 19 is fixedly connected with a clamping spring 22 and the outer end of the clamping spring 22 is fixedly connected to the inner wall of the upper chamber 13, the clamping spring 22 provides elastic force for the reset of the movable rod 19.

[0035] Furthermore, a worm wheel 23 is fixedly mounted on the lower outer diameter of the sleeve 14, and the worm wheel 23 can rotate under the drive of related components. A worm 25 is fixedly mounted on the middle outer diameter of the rotating shaft 24, and the worm 25 is meshingly connected with the inner end of the worm wheel 23. Through the meshing transmission of the worm 25 and the worm wheel 23, the rotation of the rotating shaft 24 can drive the sleeve 14 to rotate. A second motor 26 is fixedly mounted on the inner bottom of the base 1, and the second motor 26 provides power for the operation of another part of the device. A driving gear 27 is fixedly mounted on the driving end of the second motor 26, and the driving gear 27 rotates under the drive of the second motor 26. A driven gear 28 is fixedly mounted on the outer diameter of one side of the rotating shaft 24, and the driven gear 28 is meshingly connected with the inner end of the driving gear 27. Through the meshing transmission of the driving gear 27 and the driven gear 28, the second motor 26 can drive the rotating shaft 24 to rotate.

[0036] Furthermore, a straight slot hole 47 is opened on one side of the bottom of the probe 9, and the straight slot hole 47 provides a movable space for the counterweight rod 48. The counterweight rod 48 is movably installed inside the straight slot hole 47, and the counterweight rod 48 moves as the state of the probe 9 changes. A water immersion sensor 49 is fixedly installed on the bottom end of the counterweight rod 48, and the water immersion sensor 49 is used to detect whether the probe 9 contacts the groundwater. A contact sensor 50 is fixedly installed on the inner top of the straight slot hole 47, and the contact sensor 50 is used to detect whether the probe 9 touches the bottom of the groundwater.

[0037] Furthermore, a second fixed plate 37 is fixedly connected to the interior of the lower chamber 30 at a position near one side of the first fixed plate 31. The second fixed plate 37 plays a role of fixing and supporting. A drainage groove 38 is fixedly connected to the middle of the second fixed plate 37. The drainage groove 38 is used to collect groundwater discharged from the water outlet 33. The end of the drainage pipe 4 passes through the interior of the sleeve 14 and extends to the interior of the drainage groove 38 so as to discharge the collected groundwater. An inlet branch pipe 39 is fixedly connected to the other side of the first fixed plate 31 near each water inlet 32. The inlet branch pipe 39 provides a branch channel for groundwater to enter the water inlet 32. The ends of the inlet branch pipes 39 are fixedly connected to one end of the multi-way pipe 40. The other end of the multi-way pipe 40 extends to the outside of the probe 9 through the inlet pipe 41. The multi-way pipe 40 is used to introduce external groundwater into the inlet branch pipe 39.

[0038] Furthermore, the outer diameter of one side of the rubber piston 36 is fixedly connected to the outside of the three-head clamp 42. The three-head clamp 42 can drive the rubber piston 36 to move under the drive of related components. A short shaft 43 is movably installed on one side of the interior of the lower chamber 30. The short shaft 43 can rotate under the drive of related components. An eccentric wheel group 44 is fixedly installed at the end of the short shaft 43. The eccentric wheel group 44 moves under the rotation of the short shaft 43. The end of the eccentric wheel group 44 is fixedly connected to the middle part of the three-head clamp 42. The movement of the eccentric wheel group 44 drives the three-head clamp 42 to deflect, thereby driving the rubber piston 36 to move.

[0039] Furthermore, a second driving wheel 29 is fixedly mounted on the outer diameter of the other side of the rotating shaft 24, and the second driving wheel 29 rotates with the rotation of the rotating shaft 24. A second driven wheel 45 is fixedly mounted on the outer diameter of the short shaft 43, and the second driven wheel 45 can rotate together with the short shaft 43. The outer diameters of the second driving wheel 29 and the second driven wheel 45 are connected by a second synchronous belt 46. Through the transmission action of the second synchronous belt 46, the rotation of the rotating shaft 24 can drive the short shaft 43 to rotate.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A groundwater sampling device, comprising a base (1), characterized in that: A roller (2) is movably mounted on the top of the base (1), a pull rope (3) is wound around the outer diameters of both sides of the roller (2), a drainage pipe (4) is wound around the outer diameter of the middle part of the roller (2), the ends of the roller (2) are respectively fixedly connected to the two sides of the top of the probe (9), an upper chamber (13) is provided on the upper side of the interior of the probe (9), a sleeve (14) is movably mounted in the middle of the upper chamber (13), a plurality of water storage tanks (17) are provided in the interior of the probe (9) near the outer side of the upper chamber (13), a rotating shaft (24) is movably mounted on the lower side of the interior of the upper chamber (13), and the interior of the probe (9) is provided with a plurality of water storage tanks (17). A lower chamber (30) is provided at the lower side, a first fixing plate (31) is fixedly installed inside the lower chamber (30), three groups of water inlets (32) are provided inside the first fixing plate (31), a water outlet (33) is provided at the middle of the first fixing plate (31) near the inner side of each water inlet (32), a first rubber valve (34) is installed inside the water inlet (32), a second rubber valve (35) is installed at a position near the water outlet (33) on one side of the first fixing plate (31), and a rubber piston (36) is fixedly installed at a position near each water inlet (32) on one side of the first fixing plate (31).

2. A groundwater sampling device according to claim 1, characterized in that: A first motor (5) is fixedly mounted on the inner bottom of the base (1); a driving end of the first motor (5) extends to one side of the base (1) and is fixedly mounted with a first driving wheel (6); a middle portion of the winding roller (2) extends to one side of the base (1) via a movable shaft and is fixedly mounted with a first driven wheel (7); the outer diameters of the first driving wheel (6) and the first driven wheel (7) are connected via a first synchronous belt (8).

3. A groundwater sampling device according to claim 1, characterized in that: A diagonal support frame (10) is fixedly installed on the front side of the base (1), a fixed shaft (11) is fixedly installed on the top of the diagonal support frame (10), three pulley meter counters (12) are movably installed on the outer diameter of the fixed shaft (11), and the middle parts of the pull rope (3) and the drainage pipe (4) are both fitted on the outer diameter of the pulley meter counter (12) on the corresponding side.

4. A groundwater sampling device according to claim 1, characterized in that: A rotating disk (15) is fixedly connected to the outer diameter of the upper side of the sleeve (14), a semicircular recessed hole (16) is opened on one side of the rotating disk (15), the inner upper side of the water storage tank (17) is connected to the interior of the upper chamber (13) through a connecting hole (18), a movable rod (19) is movably installed inside the connecting hole (18), the outer end of the movable rod (19) is fixedly connected to a sealing plug (20), the inner end of the movable rod (19) is fixedly connected to a round head protrusion (21), the outer diameter of the movable rod (19) is fixedly connected to a compression spring (22), and the outer end of the compression spring (22) is fixedly connected to the inner wall of the upper chamber (13).

5. A groundwater sampling device according to claim 1, characterized in that: A worm wheel (23) is fixedly mounted on the lower outer diameter of the sleeve (14), a worm (25) is fixedly mounted on the middle outer diameter of the rotating shaft (24), and the inner ends of the worm (25) and the worm wheel (23) are meshingly connected, a second motor (26) is fixedly mounted on the inner bottom of the base (1), a driving gear (27) is fixedly mounted on the driving end of the second motor (26), and a driven gear (28) is fixedly mounted on the outer diameter of one side of the rotating shaft (24), and the inner ends of the driven gear (28) and the driving gear (27) are meshingly connected.

6. A groundwater sampling device according to claim 1, characterized in that: A straight slot hole (47) is provided on one side of the bottom of the probe (9), a counterweight rod (48) is movably installed inside the straight slot hole (47), a water immersion sensor (49) is fixedly installed at the bottom end of the counterweight rod (48), and a contact sensor (50) is fixedly installed at the inner top of the straight slot hole (47).

7. A groundwater sampling device according to claim 1, characterized in that: A second fixed plate (37) is fixedly connected to the interior of the lower chamber (30) at a position close to one side of the first fixed plate (31); a drainage groove (38) is fixedly connected to the middle of the second fixed plate (37); the end of the drainage pipe (4) passes through the interior of the sleeve (14) and extends to the interior of the drainage groove (38); a water inlet branch pipe (39) is fixedly connected to the other side of the first fixed plate (31) at a position close to each water inlet (32); the end of the water inlet branch pipe (39) is fixedly connected to one end of a multi-way pipe (40); the other end of the multi-way pipe (40) extends to the outside of the probe (9) through the water inlet pipe (41).

8. A groundwater sampling device according to claim 1, characterized in that: The outer diameter of one side of the rubber piston (36) is fixedly connected to the outside of the three-head clamp (42), and a short shaft (43) is movably installed on one side of the interior of the lower chamber (30). An eccentric wheel group (44) is fixedly installed at the end of the short shaft (43), and the end of the eccentric wheel group (44) is fixedly connected to the middle of the three-head clamp (42).

9. A groundwater sampling device according to claim 8, characterized in that: A second driving wheel (29) is fixedly mounted on the outer diameter of the other side of the rotating shaft (24), a second driven wheel (45) is fixedly mounted on the outer diameter of the short shaft (43), and the outer diameters of the second driving wheel (29) and the second driven wheel (45) are connected via a second synchronous belt (46).

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