Underground water sampling device and use method thereof

Abstract

The invention relates to the technical field of underground water sampling, and discloses an underground water sampling device and a using method thereof.The underground water sampling device comprises a bottom frame, a vertical frame is fixedly installed on the bottom frame, a first side plate and a second side plate are installed on the two opposite sides of the vertical frame respectively, and a motor is installed between the first side plate and the second side plate; the output end of the motor is connected with a turntable, a pipe body is wound on the turntable, the end part of the pipe body is connected with a sampling head, the sampling head comprises a water storage part and a floating part, the floating part sleeves the top end of the water storage part, the middle part of the water storage part and the middle part of the floating part form a communicated channel, and the end part of the pipe body penetrates through the channel and then is provided with a limiting piece. Through double sampling of the first cup body, the second cup body, the third cup body and the water pipe suction pump, water detection structures of different samples are compared, and the problem that in the well water suction sampling process, substances in well water change due to the influence of the temperature and the oxygen content and are not easy to find in the detection process is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater sampling, and in particular to a groundwater sampling device and a use method thereof. Background Art

[0002] Groundwater sampling devices are equipment used to collect water samples from groundwater sources. Common groundwater sampling devices include bucket samplers, airbag sampling pumps, inertial pumps, centrifugal pumps, submersible pumps, baile tubes, discontinuous interval samplers, etc. These devices have their own advantages and disadvantages and are suitable for different sampling needs and environmental conditions.

[0003] Suction pumps and pipelines are often used to extract groundwater for sampling. During the process of pumping and sampling well water, the substances in the well water are affected by temperature and oxygen content and change. These problems are not easy to find during the detection process and can easily lead to inaccurate test results. Summary of the invention

[0004] The object of the present invention is to provide a groundwater sampling device and a method of using the same to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a groundwater sampling device, comprising a base frame, a vertical frame fixedly mounted on the base frame, a first side plate and a second side plate respectively mounted on opposite sides of the vertical frame, a motor mounted between the first side plate and the second side plate, an output end of the motor connected to a turntable, a tube body wound around the turntable, an end of the tube body connected to a sampling head, the sampling head comprising a water storage part and a floating part, the floating part being sleeved on the top end of the water storage part, the middle part of the water storage part and the middle part of the floating part forming a communicating channel, a limiting member being mounted after the end of the tube body passes through the channel.

[0007] Further, the water storage part at least comprises a first cup body, a second cup body and a third cup body, the first cup body, the second cup body and the third cup body are stacked in sequence, long grooves are provided on the outer sides of the first cup body and the second cup body, protrusions are provided in the long grooves, and limiting buckles are provided at the top ends of the second cup body and the third cup body, the limiting buckles extend into the corresponding long grooves, and the limiting buckles are limitedly matched with the long grooves;

[0008] The first cup body, the second cup body and the third cup body are all ring structures, annular grooves are formed in the first cup body, the second cup body and the third cup body, and through holes are opened on the inner side and the outer side of the ring structure;

[0009] A mounting seat is installed in the channel of the first cup body, a plug is installed in the mounting seat, the tube body passes through a through slot in the middle of the plug, and a plurality of balls are installed on the inner wall of the through slot in the middle of the plug;

[0010] The stopper comprises a sleeve body and a plug, the plug is installed in a through slot in the middle of the sleeve body, the top end of the plug extends out of the through slot of the sleeve body and is connected to the tube body, a through slot is provided on the outer side of the extended end of the plug, the bottom end of the sleeve body is provided with an edge body, the sleeve body is mounted on the bottom end of the channel of the third cup body and closes the channel;

[0011] The bottom end of the plug is a spherical surface, and a plurality of guide grooves are provided on the spherical surface;

[0012] When sampling groundwater, place the sampling head in the wellhead of the deep well, start the installed motor, and the motor drives the turntable to rotate counterclockwise, so that the tube wrapped on the turntable is gradually placed in the deep well;

[0013] After the sampling head falls into the water of the deep well, the floating disk floats on the water surface because the density of the floating disk is less than that of water;

[0014] As the pipe body continues to release the line, and under the action of the gravity of the first cup body, the second cup body, the third cup body, the sleeve body and the plug, the first cup body, the second cup body, the third cup body, the sleeve body and the plug continue to move downward and extend into the water;

[0015] The top end of the tube in the middle of the first cup body is extended, and a mounting seat is installed in the tube end of the first cup body, and an edge body is provided at the upper end of the mounting seat;

[0016] When the first cup body, the second cup body and the third cup body fall in the water, the paper floating plate contacts the edge of the mounting seat, and the first cup body, the second cup body and the third cup body are supported by the floating plate and stop falling;

[0017] As the tube body continues to extend, the sleeve body and the plug continue to move downward until the sleeve body is completely separated from the third cup body;

[0018] At this time, water enters the first cup body, the second cup body, and the third cup body through the through holes on the outer sides of the first cup body, the second cup body, and the third cup body, and the air inside the first cup body, the second cup body, and the third cup body is discharged through the through holes on the inner sides;

[0019] At the same time, the through slot extends into the water, and the other end of the pipe body is connected to a suction pump to extract the well water for sampling, so as to obtain a large amount of well water;

[0020] After the sampling is completed, the motor drives the turntable to rotate clockwise to recover the tube body wound on the turntable. The sleeve and the plug rise under the stretching action of the tube body until the sleeve completely enters the third cup body, the bottom end of the third cup body is closed, and the first cup body, the second cup body, and the third cup body filled with water are lifted;

[0021] By closing both ends of the formed channel, the inner through hole is closed to prevent the collected water from leaking out;

[0022] Through the double sampling of the first cup body, the second cup body, the third cup body and the water pipe suction pump, the water detection structures of different samples are compared during the detection process to verify the accuracy of the detection structure, which solves the problem that during the process of well water suction sampling, the substances in the well water are affected by temperature and oxygen content and change, which is not easy to find during the detection process;

[0023] At the same time, sampling is carried out through containers, and the amount of a single sample is limited, and multiple samplings are required to obtain sufficient testing volume;

[0024] A small amount of sampling is performed through the first cup body, the second cup body, and the third cup body for comparison.

[0025] Further, the turntable includes a front baffle, a rear baffle and a shaft body, the front baffle and the rear baffle are installed on the shaft body, a threaded cap and a compression spring are installed at the end of the shaft body, and the threaded cap limits the rear baffle;

[0026] A plate body is installed on the inner side of the front baffle, and a transverse plate is connected to the end of the plate body. The plate body and the transverse plate are also connected by a tension spring. A slider is sleeved on the shaft body, and a plurality of connecting rods are connected to the slider. The connecting rods are distributed correspondingly to the plate body, and the ends of the connecting rods are connected to the transverse plate. A supporting plate is installed on the outer side of the transverse plate.

[0027] The outer surface of the shaft body is provided with limiting grooves distributed along the axial direction, and the inner wall of the slider is provided with convex edges matching with the limiting grooves;

[0028] The tube body is wound around the outside of the annularly distributed support plate. When the wound tube body needs to be taken out, the installed threaded cap and compression spring are removed, and the rear baffle is removed;

[0029] The slider is pushed to slide outward along the shaft body, and the slider drives one end of the connecting rod to move. Under the pull of the tension spring, the end of the cross plate close to the slider tilts toward one side of the shaft body, and the annular support plates form a conical surface, which is convenient for taking out the wound tube body.

[0030] The method for using the groundwater sampling device comprises the following steps:

[0031] Step 1: When sampling groundwater, place the sampling head in the wellhead of the deep well, start the installed motor, and gradually put the pipe body wound on the turntable into the deep well;

[0032] Step 2: After the sampling head falls into the water of the deep well, the floating disk floats on the water surface because the density of the floating disk is less than the density of water;

[0033] As the pipe body continues to release the line, and under the action of the gravity of the first cup body, the second cup body, the third cup body, the sleeve body and the plug, the first cup body, the second cup body, the third cup body, the sleeve body and the plug continue to move downward and extend into the water;

[0034] The through slot extends into the water, and the other end of the pipe body is connected to a suction pump to extract the well water for sampling, so as to obtain a large amount of well water;

[0035] Step three, after completing the sampling, the motor drives the turntable to rotate clockwise to recover the tube body wrapped on the turntable, and the sleeve and the plug rise under the stretching action of the tube body until the sleeve completely enters the third cup body, closing the bottom end of the third cup body, and lifting the first cup body, the second cup body, and the third cup body filled with water.

[0036] The present invention has the following beneficial effects:

[0037] (1) The present invention performs dual sampling by using the first cup body, the second cup body, the third cup body and the water pipe suction pump. During the detection process, the water detection structures of different samples are compared to verify the accuracy of the detection structure, thereby solving the problem that during the well water suction sampling process, the substances in the well water are affected by temperature and oxygen content and change, which is not easy to be found during the detection process.

[0038] (2) The tube body of the present invention is wound around the outside of the annularly distributed support plate. When the wound tube body needs to be taken out, the installed threaded cap and compression spring are disassembled, the rear baffle is removed, and the slider is pushed to slide outward along the shaft body. The slider drives one end of the connecting rod to move. Under the pull of the tension spring, the end of the cross plate close to the slider tilts toward one side of the shaft body, and the annularly distributed support plate forms a conical surface, which is convenient for taking out the wound tube body.

[0039] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0041] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2 It is a schematic diagram of the turntable of the present invention;

[0043] Figure 3 It is a partial schematic diagram of the turntable of the present invention;

[0044] Figure 4 For the present invention Figure 3 A magnified schematic diagram of point A;

[0045] Figure 5 It is a schematic diagram of the sampling head of the present invention;

[0046] Figure 6 It is a cross-sectional schematic diagram of the sampling head of the present invention;

[0047] Figure 7 This is a schematic diagram of the sampling head of the present invention;

[0048] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0049] In the figure: 1, bottom frame; 2, vertical frame; 3, first side plate; 4, second side plate; 5, turntable; 501, front baffle; 502, rear baffle; 503, support plate; 504, threaded cap; 505, compression spring; 506, plate body; 507, horizontal plate; 508, tension spring; 509, connecting rod; 510, slider; 511, shaft body; 512, limit groove; 6, tube body; 7, Sampling head; 701, first cup body; 702, second cup body; 703, third cup body; 704, sleeve body; 705, plug; 7051, spherical surface; 7052, guide groove; 7053, through groove; 706, floating plate; 7061, drainage hole; 707, mounting seat; 708, plug; 709, long groove; 710, limit buckle; 711, bump; 712, through hole. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments 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.

[0051] Example 1

[0052] See also Figure 1-Figure 7As shown, the present invention is a groundwater sampling device, comprising a base frame 1, a stand frame 2 is fixedly mounted on the base frame 1, a first side plate 3 and a second side plate 4 are respectively mounted on opposite sides of the stand frame 2, a motor is mounted between the first side plate 3 and the second side plate 4, and a turntable 5 is connected to the output end of the motor, and the device is characterized in that:

[0053] A tube body 6 is wound around the turntable 5, and a sampling head 7 is connected to the end of the tube body 6, so that the tube body 6 and the wire rope can be used together to improve the pulling strength;

[0054] The sampling head 7 includes a water storage part and a floating part, and the floating part is sleeved on the top of the water storage part;

[0055] The middle of the water storage part and the middle of the floating part form a communicating channel, and a limiting member is installed after the end of the tube body 6 passes through the channel.

[0056] The water storage part at least includes a first cup body 701, a second cup body 702 and a third cup body 703, which are stacked in sequence. Long grooves 709 are provided on the outer surfaces of the first cup body 701 and the second cup body 702, and protrusions 711 are provided inside the long grooves 709. The top of the second cup body 702 and the top of the third cup body 703 are both provided with limit buckles 710, which extend into the corresponding long grooves 709, and the limit buckles 710 are limitedly matched with the long grooves 709.

[0057] The first cup body 701, the second cup body 702 and the third cup body 703 are all annular structures, annular grooves are formed inside the first cup body 701, the second cup body 702 and the third cup body 703, and through holes 712 are opened on the inner side and the outer side of the annular structure;

[0058] A mounting seat 707 is installed in the channel of the first cup body 701, a plug 705 is installed in the mounting seat 707, the tube body 6 passes through the through slot in the middle of the plug 705, and a plurality of balls are installed on the inner wall of the through slot in the middle of the plug 705;

[0059] The stopper includes a sleeve 704 and a plug 705. The plug 705 is installed in the through groove in the middle of the sleeve 704. The top of the plug 705 extends out of the through groove of the sleeve 704 and is connected to the tube 6. A through groove 7053 is provided on the outer side of the extended end of the plug 705. The bottom end of the sleeve 704 is provided with an edge body. The sleeve 704 is installed in cooperation with the bottom end of the channel of the third cup 703 to close the channel.

[0060] After the plug 705 penetrates into the water, the plug 705 moves downward to allow water to enter the through slot 7053, thereby solving the problem that the existing water inlet first passes through the water surface and then moves downward, and the water inlet is easily blocked by debris on the water surface;

[0061] The bottom end of the plug 705 is a spherical surface 7051, and a plurality of guide grooves 7052 are formed on the spherical surface 7051 to facilitate the water flow to flow outward along the guide grooves 7052;

[0062] When sampling groundwater, the sampling head 7 is placed in the wellhead of the deep well, and the installed motor is started, and the motor drives the turntable 5 to rotate counterclockwise, so that the pipe body 6 wound on the turntable 5 is gradually placed into the deep well;

[0063] After the sampling head 7 falls into the water of the deep well, the floating plate 706 floats on the water surface because the density of the floating plate 706 is less than the density of water;

[0064] As the tube 6 continues to release the line, and under the action of the gravity of the first cup 701, the second cup 702, the third cup 703, the sleeve 704 and the plug 705, the first cup 701, the second cup 702, the third cup 703, the sleeve 704 and the plug 705 continue to move downward and extend into the water;

[0065] The top end of the tube body in the middle of the first cup body 701 is extended, and a mounting seat 707 is installed in the tube body end of the first cup body 701, and an edge body is provided at the upper end of the mounting seat 707;

[0066] When the first cup body 701, the second cup body 702, and the third cup body 703 fall in the water, the paper floating plate 706 contacts the edge of the mounting seat 707, and the first cup body 701, the second cup body 702, and the third cup body 703 are supported by the floating plate 706 and stop falling;

[0067] As the tube body 6 continues to extend, the sleeve body 704 and the plug 705 continue to move downward until the sleeve body 704 is completely separated from the third cup body 703;

[0068] At this time, water enters the first cup body 701, the second cup body 702, and the third cup body 703 through the through holes 712 provided on the outer sides of the first cup body 701, the second cup body 702, and the third cup body 703, and the air inside the first cup body 701, the second cup body 702, and the third cup body 703 is discharged through the through holes 712 provided on the inner sides;

[0069] At the same time, the through slot 7053 extends into the water, and the other end of the tube body 6 is connected to a suction pump to extract the well water for sampling, so as to obtain a large amount of well water;

[0070] After the sampling is completed, the motor drives the turntable 5 to rotate clockwise to realize the recovery of the tube body 6 wound on the turntable 5, and the sleeve 704 and the plug 705 rise under the stretching action of the tube body 6 until the sleeve 704 completely enters the third cup body 703, the bottom end of the third cup body 703 is closed, and the first cup body 701, the second cup body 702, and the third cup body 703 filled with water are lifted;

[0071] By closing both ends of the formed channel, the inner through hole 712 is closed to prevent the collected water from leaking out;

[0072] Through the double sampling of the first cup body 701, the second cup body 702, the third cup body 703 and the water pipe suction pump, the water detection structures of different samples are compared during the detection process to verify the accuracy of the detection structure, which solves the problem that the temperature and oxygen content of the well water are easily increased during the well water suction sampling process, and the substances in the well water are affected by the temperature and oxygen content and change, which is not easy to find during the detection process;

[0073] At the same time, sampling is carried out through containers, and the amount of a single sample is limited, and multiple samplings are required to obtain sufficient testing volume;

[0074] A small amount of sampling work is performed through the first cup body 701, the second cup body 702, and the third cup body 703 for comparison.

[0075] The turntable 5 includes a front baffle 501, a rear baffle 502 and a shaft 511. The front baffle 501 and the rear baffle 502 are installed on the shaft 511. A threaded cap 504 and a compression spring 505 are installed at the end of the shaft 511. The threaded cap 504 limits the rear baffle 502.

[0076] A plate body 506 is installed on the inner side of the front baffle 501, and a transverse plate 507 is connected to the end of the plate body 506. The plate body 506 and the transverse plate 507 are also connected by a tension spring 508. A slider 510 is sleeved on the shaft body 511, and a plurality of connecting rods 509 are connected to the slider 510. The connecting rods 509 are distributed corresponding to the plate body 506, and the ends of the connecting rods 509 are connected to the transverse plate 507. A support plate 503 is installed on the outer side of the transverse plate 507;

[0077] The outer surface of the shaft body 511 is provided with a limiting groove 512 distributed along the axial direction, and the inner wall of the slider 510 is provided with a convex ridge that matches the limiting groove 512;

[0078] The tube body 6 is wound around the outer side of the annular support plate 503. When the wound tube body 6 needs to be taken out, the installed threaded cap 504 and the compression spring 505 are disassembled, and the rear baffle 502 is removed;

[0079] The slider 510 is pushed to slide outward along the shaft 511, and the slider 510 drives one end of the connecting rod 509 to move. Under the pull of the tension spring 508, the end of the cross plate 507 close to the slider 510 tilts toward one side of the shaft 511, and the annular support plate 503 forms a conical surface, which is convenient for taking out the wound tube 6.

[0080] Example 2

[0081] The method for using the groundwater sampling device comprises the following steps

[0082] Step 1: When sampling groundwater, place the sampling head 7 in the wellhead of the deep well, start the installed motor, and gradually put the pipe body 6 wound on the turntable 5 into the deep well;

[0083] Step 2: After the sampling head 7 falls into the water of the deep well, the floating plate 706 floats on the water surface because the density of the floating plate 706 is less than the density of water;

[0084] As the tube 6 continues to release the line, and under the action of the gravity of the first cup 701, the second cup 702, the third cup 703, the sleeve 704 and the plug 705, the first cup 701, the second cup 702, the third cup 703, the sleeve 704 and the plug 705 continue to move downward and extend into the water;

[0085] The through slot 7053 extends into the water, and the other end of the tube body 6 is connected to a suction pump to extract the well water for sampling, so as to obtain a large amount of well water;

[0086] Step three, after completing the sampling, the motor drives the turntable 5 to rotate clockwise to realize the recovery of the tube body 6 wound on the turntable 5, and the sleeve 704 and the plug 705 rise under the stretching action of the tube body 6 until the sleeve 704 completely enters the third cup body 703, closing the bottom end of the third cup body 703, and lifting the first cup body 701, the second cup body 702, and the third cup body 703 filled with water.

[0087] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A groundwater sampling device, comprising a base frame (1), a stand frame (2) fixedly mounted on the base frame (1), a first side plate (3) and a second side plate (4) mounted on opposite sides of the stand frame (2), a motor mounted between the first side plate (3) and the second side plate (4), an output end of the motor connected to a turntable (5), characterized in that: A tube body (6) is wound around the rotating disk (5), and a sampling head (7) is connected to the end of the tube body (6); The sampling head (7) comprises a water storage portion and a floating portion, wherein the floating portion is sleeved on the top of the water storage portion; The middle of the water storage part and the middle of the floating part form a communicating channel, and a limiting member is installed after the end of the tube body (6) passes through the channel.

2. A groundwater sampling device and a method of using the same according to claim 1, characterized in that: The water storage portion at least comprises a first cup body (701), a second cup body (702) and a third cup body (703); The first cup body (701), the second cup body (702) and the third cup body (703) are stacked in sequence; The outer surfaces of the first cup body (701) and the second cup body (702) are both provided with long grooves (709), and the inner surfaces of the long grooves (709) are provided with protrusions (711); The top of the second cup body (702) and the top of the third cup body (703) are both provided with a limiting buckle (710), and the limiting buckle (710) extends into the corresponding long groove (709), and the limiting buckle (710) and the long groove (709) are limitedly matched.

3. A groundwater sampling device and a method of using the same according to claim 2, characterized in that: The first cup body (701), the second cup body (702) and the third cup body (703) are all ring structures; Annular grooves are formed in the first cup body (701), the second cup body (702) and the third cup body (703); Through holes (712) are provided on the inner side and the outer side of the ring structure.

4. A groundwater sampling device and a method of using the same according to claim 2, characterized in that: A mounting seat (707) is installed in the channel of the first cup body (701); A plug (705) is installed in the mounting seat (707), and the tube body (6) passes through a through slot in the middle of the plug (705); A plurality of balls are mounted on the inner wall of the through groove in the middle of the plug (705).

5. A groundwater sampling device and a method of using the same according to claim 1, characterized in that: The limiting member comprises a sleeve (704) and a plug (705); The plug (705) is installed in the through groove in the middle of the sleeve (704), and the top end of the plug (705) extends out of the through groove of the sleeve (704) and is connected to the pipe body (6); A through groove (7053) is formed on the outer side of the protruding end of the plug (705); The bottom end of the sleeve (704) is provided with an edge body, and the sleeve (704) is mounted on the bottom end of the channel of the third cup body (703) to seal the channel.

6. A groundwater sampling device and a method of using the same according to claim 5, characterized in that: The bottom end of the plug (705) is a spherical surface (7051), and a plurality of guide grooves (7052) are provided on the spherical surface (7051).

7. A groundwater sampling device and a method of using the same according to claim 1, characterized in that: The rotating disk (5) comprises a front baffle (501), a rear baffle (502) and a shaft (511); A front baffle (501) and a rear baffle (502) are mounted on the shaft body (511); A threaded cap (504) and a compression spring (505) are installed at the end of the shaft body (511), and the threaded cap (504) limits the rear baffle (502).

8. A groundwater sampling device and a method of using the same according to claim 7, characterized in that: A plate body (506) is installed on the inner side surface of the front baffle (501); The end of the plate body (506) is connected to a transverse plate (507), and the plate body (506) and the transverse plate (507) are also connected via a tension spring (508); The shaft body (511) is sleeved with a slider (510), the slider (510) is connected to a plurality of connecting rods (509), and the connecting rods (509) are distributed correspondingly to the plate body (506); The end of the connecting rod (509) is connected to the horizontal plate (507); A support plate (503) is installed on the outer side of the transverse plate (507).

9. A groundwater sampling device and a method of using the same according to claim 1, characterized in that: The outer surface of the shaft body (511) is provided with limiting grooves (512) distributed along the axial direction; The inner wall of the sliding block (510) is provided with a convex ridge that cooperates with the limiting groove (512).

10. A method for using the groundwater sampling device according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: When sampling groundwater, place the sampling head (7) in the wellhead of the deep well, start the installed motor, and gradually put the pipe body (6) wound on the turntable (5) into the deep well; Step 2: After the sampling head (7) falls into the water of the deep well, the floating plate (706) floats on the water surface because the density of the floating plate (706) is less than the density of water; As the pipe body (6) continues to release the line, and under the action of the gravity of the first cup body (701), the second cup body (702), the third cup body (703), the sleeve body (704) and the plug (705), the first cup body (701), the second cup body (702), the third cup body (703), the sleeve body (704) and the plug (705) continue to move downward and extend into the water; The through slot (7053) extends into the water, and the other end of the tube body (6) is connected to a suction pump to extract well water for sampling, thereby facilitating the acquisition of a large amount of well water; Step three, after the sampling is completed, the motor drives the turntable (5) to rotate clockwise to realize the recovery of the tube body (6) wound on the turntable (5), and the sleeve body (704) and the plug (705) rise under the stretching action of the tube body (6) until the sleeve body (704) completely enters the third cup body (703), the bottom end of the third cup body (703) is closed, and the first cup body (701), the second cup body (702), and the third cup body (703) filled with water are lifted.

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