A sampling device for detecting groundwater pollution concentration

Abstract

A groundwater pollution concentration detection sampling device belongs to the field of groundwater sampling technology. It includes a loading shell and a supporting mechanism that cooperates with it, the top of the loading shell is provided with a supporting mechanism, the interior of the loading shell is provided with a plurality of rotating rods, and a driving motor is fixedly installed near the bottom of the supporting mechanism inside the loading shell. Through the arrangement of the track belt, the sampling mechanism and the rotating rod, when the groundwater is seriously polluted, personnel can sample and separate the groundwater, because the impurities and water are sent for inspection separately to ensure the use of the correct detection methods and standards, so as to obtain more accurate results. At the same time, when taking water, since the surface floating water is greatly affected by the season, it may be mixed with substances during the freezing and melting process, which will lead to poor overall detection accuracy of the water body and sampling failure. At this time, the sampling mechanism can effectively avoid the contamination of the sample by the surface water during sampling.

Description

Technical Field

[0001] The invention relates to the technical field of groundwater sampling, in particular to groundwater pollution concentration detection sampling equipment. Background Art

[0002] The sampling of groundwater pollution concentration detection is usually based on the needs of groundwater investigation and monitoring. The sampling point should be located in a place where the aquifer is relatively thin, the thickness of the aquifer is relatively uniform, and the groundwater flow rate is slow. At the same time, it should avoid the pollution source and the main path of groundwater flow. First, prepare the drilling equipment, sample the groundwater after drilling, then take the sample away, and finally perform data analysis and report writing;

[0003] Among them, in the sampling stage of groundwater, when it is necessary to conduct quantitative analysis of the test items including water quality analysis and impurities in the water (such as heavy metals, organic matter, etc.), separate sampling is required. Because the types and concentrations of pollutants in water quality and impurities may be different, separate sampling can ensure a more accurate assessment of the pollution status of each. If the groundwater is affected by serious pollution sources and the concentration of pollutants varies greatly over time, it may be necessary to sample at different time periods;

[0004] Currently, when sampling groundwater bodies with serious pollutants, it is difficult to separate and sample the water and impurities in the water, and sampling in different time periods is cumbersome. In addition, when sampling groundwater, the water on the surface of the groundwater is often affected by multiple factors such as the surface environment, rainfall, evaporation, and runoff. Its water quality characteristics may not accurately represent the overall condition of the groundwater body, resulting in sampling difficulties. Summary of the invention

[0005] The purpose of the present invention is to provide a groundwater pollution concentration detection sampling device, which solves the problems in the background technology that the separation and sampling of water and impurities in the water are difficult, the sampling in different time periods is cumbersome, and the groundwater surface cannot accurately represent the overall condition of the groundwater body and the sampling is difficult.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a groundwater pollution concentration detection sampling device, comprising a loading shell and a supporting mechanism working together therewith, the top of the loading shell is provided with a supporting mechanism, a plurality of rotating rods are provided inside the loading shell, a driving motor is fixedly installed inside the loading shell near the bottom of the supporting mechanism, one of the rotating rods is fixedly connected to the output end of the driving motor, a track belt with teeth and grooves is meshed on the surface of the rotating rod, and a plurality of sampling mechanisms are provided on the surface of the track belt.

[0007] Furthermore, the supporting mechanism includes a connecting block arranged on the top of the loading shell, the surface of the connecting block is rotatably connected to a fixing claw, the surface of the connecting block is slidably connected to a movable block on the side away from the fixing claw, and is rotatably connected to a synchronization rod through the fixing claw, a threaded hole is opened inside the movable block, and a fixing bolt is threadedly connected inside the threaded hole.

[0008] Furthermore, a conical notch is provided on a side of the interior of the loading shell away from the driving motor, and a position of the conical notch close to the driving motor is a small notch.

[0009] Further, the sampling mechanism includes a mounting rod arranged on the surface of the track belt, the surface of the mounting rod is rotatably connected with a rotating arc block, the surface of the rotating arc block is wrapped with a movable rope, the end of the movable rope is provided with a closed component, the surface of the movable rope is provided with a second movable ball, the surface of the movable rope is also movably provided with a first storage column, a second storage column is provided inside the first storage column, the inside of the second storage column is rotatably connected with a scraping component, the inside of the second storage column is rotatably connected with a mating component on one side near the scraping component, a plurality of water holes are provided in a circular array inside the second storage column near the bottom of the mating component, and the bottom end of the second storage column is threadedly connected to the first storage column through a guide column.

[0010] Furthermore, a card interface is provided on the surface of the sealing component, and an arc-shaped sealing block is arranged inside the card interface.

[0011] Furthermore, two groups of first rotating gears are arranged on the surface of the scraper assembly, and a plurality of groups of circular rings are clamped on the side of the scraper assembly surface away from the first rotating gears, and an adapter rod is fixedly connected to the surface of the circular ring, and a scraper blade is fixedly connected to the end of the adapter rod.

[0012] Furthermore, two groups of second rotating gears are arranged on the surface of the mating component, and the surfaces of the two groups of second rotating gears are meshed one by one with the two groups of first rotating gears arranged on the surface of the scraping component. The surface of the mating component is also wrapped around part of the movable rope.

[0013] Furthermore, a cylinder is provided on one side of the loading shell near the conical notch, and a pushing block is fixedly connected to the output end of the cylinder.

[0014] Furthermore, a gripping block is provided at one end of the connecting block, and anti-slip grooves are provided on the surface of the gripping block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a groundwater pollution concentration detection sampling device. Through the arrangement of a track belt, a sampling mechanism and a rotating rod, when the groundwater is seriously polluted, personnel can sample the groundwater and place it for static separation. Because the impurities and water are sent for inspection separately, it can ensure the use of the correct detection method and standard, so as to obtain more accurate results. At the same time, when taking water, since the surface floating water is greatly affected by the season, it may be mixed with substances during the freezing and melting process, which will lead to poor overall detection accuracy of the water body and sampling failure. At this time, the sampling mechanism can effectively avoid the contamination of the sample by the surface water during sampling.

[0017] Secondly, the quality and quantity of groundwater will change with time. By setting up the track belt, sampling mechanism and rotating rod, the groundwater can be sampled in sections at regular intervals and in fixed quantities, which can make the detection data more accurate and reduce unnecessary man-hours. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the loading shell and the supporting mechanism of the present invention;

[0019] Figure 2 It is a schematic diagram of a partial cross-section structure of a loading shell and a supporting mechanism of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection relationship between the loading shell and the supporting mechanism and the internal cross-sectional structure of the loading shell of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the loading shell of the present invention;

[0022] Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0023] Figure 6 It is a schematic diagram of the overall structure of the sampling mechanism of the present invention;

[0024] Figure 7 It is a schematic diagram of a one-third section structure of the sampling mechanism of the present invention;

[0025] Figure 8 It is a schematic diagram of a cross-section of the entire sampling mechanism of the present invention;

[0026] Fig. 9 For the present invention Figure 8 A schematic diagram of the local enlarged structure at B in the middle;

[0027] Fig.10 It is a schematic diagram of the overall structure of the scraping assembly of the present invention;

[0028] Fig.11It is a schematic diagram of the cross-sectional structure of the sampling mechanism of the present invention as a whole at another angle.

[0029] In the figure: 1. loading shell; 2. supporting mechanism; 21. fixing claw; 22. movable block; 23. synchronization rod; 24. connecting block; 3. rotating rod; 4. driving motor; 5. track belt; 6. sampling mechanism; 601. mounting rod; 602. rotating arc block; 603. movable rope; 604. sealing component; 6041. arc-shaped sealing block; 605. second movable ball; 606. first storage column; 607. scraping component; 6071. first rotating gear; 6072. circular collar; 6073. adapter rod; 6074. scraping piece; 608. matching component; 6081. second rotating gear; 609. second storage column; 610. water hole; 611. guide column; 7. conical notch; 8. cylinder; 9. push block; 10. hand grip block. DETAILED DESCRIPTION

[0030] 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.

[0031] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0032] Combination Figure 1-Figure 11 A groundwater pollution concentration detection sampling device includes a loading shell 1 and a supporting mechanism 2 working together therewith, the supporting mechanism 2 is arranged on the top of the loading shell 1, a plurality of rotating rods 3 are arranged inside the loading shell 1, a driving motor 4 is fixedly installed near the bottom of the supporting mechanism 2 inside the loading shell 1, one of the rotating rods 3 is fixedly connected to the output end of the driving motor 4, a track belt 5 with teeth and grooves is meshed on the surface of the rotating rod 3, and a plurality of sampling mechanisms 6 are arranged on the surface of the track belt 5.

[0033] When the device is in use, first determine the position for drilling, then set up the entire device on the wall of the sampling hole with the hole drilled by operating the support mechanism 2, and then start the drive motor 4 inside the loading shell 1, wherein each rotating rod 3 inside the loading shell 1 rotates on the inner wall of the loading shell 1, and at the same time, the inside and the outside of the track belt 5 are engaged with each rotating rod 3 through the tooth grooves, and all the rotating rods 3 and the parts connected to the track belt 5 are always on the same horizontal line when in use. When the drive motor 4 drives one of the rotating rods 3 to rotate, it drives the track belt 5 so that several rotating rods 3 arranged on the track belt 5 can move.

[0034] See also Figure 2-Figure 11 The supporting mechanism 2 includes a connecting block 24 arranged on the top of the loading shell 1, and the surface of the connecting block 24 is rotatably connected to a fixing claw 21, and the surface of the connecting block 24 is slidably connected to a movable block 22 on the side away from the fixing claw 21, and is rotatably connected to a synchronization rod 23 through the fixing claw 21, and a threaded hole is opened inside the movable block 22, and a fixing bolt is threadedly connected inside the threaded hole.

[0035] Before the device takes samples, the movable block 22 on the connecting block 24 is pulled so that the synchronization rod 23 drives the fixed claw 21 to move, thereby adjusting the rotation angle of the fixed claw 21 on the connecting block 24. When the rotation angle of the fixed claw 21 reaches a suitable position, the fixed claw 21 can be grasped on the top of the opened hole wall or the claw can be stuck inside the hole wall, so that the loading shell 1 on the device can ensure its vertical state. Subsequently, the claw opening is limited and fixed by rotating the fixing bolt of the movable block 22 on the connecting block 24.

[0036] A conical notch 7 is provided on a side of the loading housing 1 away from the driving motor 4 , and a position of the conical notch 7 close to the driving motor 4 is a small notch.

[0037] The sampling mechanism 6 includes a mounting rod 601 arranged on the surface of the track belt 5, the surface of the mounting rod 601 is rotatably connected to a rotating arc block 602, the surface of the rotating arc block 602 is wrapped with a movable rope 603, the end of the movable rope 603 is provided with a sealing component 604, the surface of the movable rope 603 is provided with a second movable ball 605, and the surface of the movable rope 603 near the second movable ball 605 is also movably provided with a first storage column 606, the interior of the first storage column 606 is provided with a second storage column 609, the interior of the second storage column 609 is rotatably connected to a scraping component 607, the interior of the second storage column 609 is rotatably connected to a side of the scraping component 607 near the scraping component 607, and the second storage column 609 is rotatably connected to a matching component 608, and the interior of the second storage column 609 near the bottom of the matching component 608 is provided with a plurality of water holes 610 in a circular array, and the bottom end of the second storage column 609 is threadedly connected to the first storage column 606 through a guide column 611.

[0038] A card interface is provided on the surface of the sealing component 604, and an arc-shaped sealing block 6041 is provided inside the card interface.

[0039] Two groups of first rotating gears 6071 are arranged on the surface of the scraper assembly 607, and a plurality of groups of circular rings 6072 are clamped on the side of the surface of the scraper assembly 607 away from the first rotating gears 6071. An adapter rod 6073 is fixedly connected to the surface of the circular ring 6072, and a scraper plate 6074 is fixedly connected to the end of the adapter rod 6073.

[0040] The surface of the mating component 608 is provided with two groups of second rotating gears 6081 , and the surfaces of the two groups of second rotating gears 6081 are meshed one by one with the two groups of first rotating gears 6071 provided on the surface of the scraping component 607 . The surface of the mating component 608 is also wrapped around a part of the movable rope 603 .

[0041] When the driving motor 4 on the device drives the track belt 5 to operate, the sampling mechanism 6 located near the bottom of the conical notch 7 falls into the water inside the cave wall, wherein the closed component 604 and the second movable ball 605 are both magnetic, and the lower port of the first storage column 606 and the lower port of the second storage column 609 are made of iron, wherein the volume of the second movable ball 605 is smaller than the volume of the closed component 604, and the port openings of the first storage column 606 and the second storage column 609, the first storage column 606 is larger than the opening of the second storage column 609, and the openings are all rounded conical openings with small tops and large bottoms, and the port openings of the first storage column 606 and the second storage column 609 are adapted to the second movable ball 605 and the closed component 604. When the sampling mechanism 6 is lowered into the water body, since the second movable ball 605 and the sealing component 604 themselves have a certain magnetism, the sampling water will not be sucked in on the surface of the water. When the sampling mechanism 6 is submerged in the water, due to the fluidity of the water body and the rope material of the movable rope 603, the sampling mechanism 6 as a whole will be tilted to a certain extent, and the water flow will impact the trumpet-shaped opening of the arc-shaped sealing block 6041 provided on the sealing component 604. At this time, the sealing component 604 will descend and separate from the port of the first storage column 606. The water flow will continue to drive the sealing component 604 connected to the movable rope 603 to continue to sink in the water body. When the track belt 5 pulls the sampling mechanism 6 out of the water body, the first storage Since column 606 is filled with water and the sealing component 604 rises, the sealing component 604 will close inside the port of the first storage column 606, and the first storage column 606 will be sealed. At this time, the detection sampling water passes through the port of the first storage column 606, flows through the interior of the guide column 611, and finally enters the interior of the second storage column 609. At this time, the second movable ball 605 also closes the port of the first storage column 606. When the track belt 5 drives the sampling mechanism 6 to be pulled into the cavity of the loading shell 1, the sampling mechanism 6 always maintains a vertical state. When the sampling mechanism 6 moves to the first cross-shaped lateral movement on the track belt 5 away from the cylinder 8, the sample of the internal cavity of the sampling mechanism 6 is left to stand and passed into the second storage The impurities in the sampled water inside the storage column 609 will adhere to the inner wall of the second storage column 609, and the remaining water that does not contain solid impurities will be distributed in the cavity formed by the first storage column 606 and the second storage column 609. When multiple timed and fixed-point sampling is required, the remaining sampling mechanisms 6 are driven by the driving motor 4 to continue to take water. The cylinder 8 is set to avoid the sampling mechanism 6 from tilting when operating on the track belt 5, and the sampling mechanism 6 is straightened to a certain extent. When the first sampling mechanism 6 of the timed and fixed-point sampling is at the opening of the conical notch 7 inside the loading shell 1, all sampling is completed. The number of samples sampled can be increased or decreased by the number of sampling mechanisms 6 installed on the track belt 5.However, it is necessary to ensure that the sampling mechanism 6 on each track belt 5 does not collide when the driving motor 4 is working. When the first sampling sample is transmitted to the opening of the tapered notch 7 by the sampling mechanism 6, the device can no longer sample again. At this time, the entire device is taken out by grasping the hand gripping block 10 at the upper end of the connecting block 24. At this time, the first sampling mechanism 6 at the opening of the tapered notch 7 is taken out, the rotating arc block 602 on the mounting rod 601 is removed, and the end of the first storage column 606 is opened. The movable rope 603 has a certain elastic force, and part of the movable rope 603 is wound around the surface of the matching component 608. The movable rope 603 is pulled slightly, so that the movable rope 603 drives the matching component 608 to rotate, and the two sets of second rotating gears 6081 set on the matching component 608 will rotate synchronously with the matching component 608 in a small range. At this time, the two matching components 608 will rotate and drive the first rotating gear 6071 to rotate, so that the scraping component 607 as a whole The movable rope 603 is rotated, and when it starts to feel tight, the movable rope 603 is loosened, and the movable rope 603 is pulled again, so that the adapter rod 6073 drives the scraper 6074 to scrape the inner wall of the second storage column 609, so that the impurities on the inner wall of the second storage column 609 fall on the bottom wall of the first storage column 606. At this time, the sealing component 604 on the movable rope 603 is removed. At this time, the sampling mechanism 6 opens the upper end of the first storage column 606, and the water will not be The opening is too small, resulting in water being unable to flow out due to gravity. This is mainly due to the combined effect of multiple factors such as surface tension, adhesion and cohesion, air pressure, and the balance between gravity and resistance. At this time, the second movable ball 605 placed on the movable rope 603 is still sealed at the lower end of the second storage column 609. The sampled water inside the second storage column 609 flows out to the first storage column 606 through the water hole 610, and then flows into the collected sterilized sampling bottle through the guide column 611, and the bottle cap is immediately closed. For samples that need to be refrigerated, they should be placed in a refrigerator or freezer as soon as possible, and the second storage column 609 should be taken out from the interior of the sampling mechanism 6 and stored separately. When sampling for seriously polluted groundwater, impurities and water have differences in chemical and physical properties. Sending them separately for inspection can avoid the interaction between them from interfering with the analysis results. At this time, they need to be separated and sent for inspection. The analysis methods and purposes of the internal impurities to be detected are different. Some analysis methods may require the impurities to be carried out in a completely dry state to ensure the accuracy of the measurement results. At this time, the second storage column 609 is taken out from the sampling mechanism 6. When the interior of the second storage column 609 is completely dry, the second movable ball 605 is pulled down. At this time, the second movable ball 605 drives the movable rope 603, so that the movable rope 603 drives the matching component 608 and the scraping component 607 to rotate again to take out the internal impurities. If certain wet chemical analysis methods are needed, the liquid inside the sampling mechanism 6 is taken out until the impurities are sent out for detection.The second storage column 609 is stored inside the sampling mechanism 6 and is kept away from direct sunlight.

[0042] A cylinder 8 is disposed on one side of the loading housing 1 near the conical notch 7 , and a pushing block 9 is fixedly connected to the output end of the cylinder 8 .

[0043] A gripping block 10 is disposed at one end of the connecting block 24 , and a surface of the gripping block 10 is provided with anti-slip grooves.

[0044] When the device is not working or is to be removed, the device can be moved by the provided hand gripping block 10 .

[0045] First, the personnel moves the device to a suitable position by grasping the gripping block 10;

[0046] Secondly, pull the movable block 22 on the connecting block 24 so that the synchronization rod 23 drives the fixed claw 21 to move, thereby adjusting the rotation angle of the fixed claw 21 on the connecting block 24. After the adjustment is completed, tighten the fixing bolt of the movable block 22 on the rotating connecting block 24 to limit and fix the claw opening, and then install the device;

[0047] Finally, the driving motor 4 is started. When the driving motor 4 drives the track belt 5 to operate, the sampling mechanism 6 below the conical notch 7 falls into the water inside the cave wall. When the sampling mechanism 6 is submerged in the water, due to the fluidity of the water and the rope material of the movable rope 603, the sampling mechanism 6 as a whole will be tilted to a certain extent, and the water flow will impact the trumpet-shaped opening of the arc-shaped sealed block 6041 set on the sealed component 604. At this time, the sealed component 604 will descend and separate from the port of the first storage column 606. The water flow will continue to drive the sealed component 604 connected to the movable rope 603 to continue to sink in the water. At this time, the water flows into the interior of the sampling mechanism 6. When the track belt 5 pulls the sampling mechanism 6 out of the water, the first storage column 606 is filled with water and the sealed component 604 rises, which will cause the sealed component 604 to close inside the port of the first storage column 606. At this time, the second movable ball 605 will pull the first The port of the storage column 606 is also closed. When the track belt 5 drives the sampling mechanism 6 to be pulled into the cavity of the loading shell 1, the sampling mechanism 6 is stationary inside the device. When multiple sampling is required, the driving motor 4 drives the remaining sampling mechanisms 6 to continue to take water. When the quantitative sampling is completed, the sampling mechanism 6 on the device is removed, the top end of the first storage column 606 is opened, and the sealing component 604 on the movable rope 603 is removed. The second movable ball 605 placed on the movable rope 603 is still sealed at the lower end of the second storage column 609. The sampling water inside the second storage column 609 flows out to the first storage column 606 through the water hole 610, and then flows into the collected sterilized sampling bottle through the guide column 611. Pull the movable rope 603 so that the movable rope 603 drives the matching component 608 and the scraping component 607 to scrape, or directly temporarily place the second storage column 609 inside the first storage column 606, and open it for sampling when it is sent for inspection.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] 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 pollution concentration detection sampling device, comprising a loading shell (1) and a supporting mechanism (2) cooperating therewith, characterized in that: A support mechanism (2) is arranged on the top of the loading shell (1), a plurality of rotating rods (3) are arranged inside the loading shell (1), a driving motor (4) is fixedly installed near the bottom of the supporting mechanism (2) inside the loading shell (1), one of the rotating rods (3) is fixedly connected to the output end of the driving motor (4), a track belt (5) with teeth and grooves is meshed on the surface of the rotating rod (3), and a plurality of sampling mechanisms (6) are arranged on the surface of the track belt (5); The sampling mechanism (6) comprises a mounting rod (601) arranged on the surface of the track belt (5), the surface of the mounting rod (601) is rotatably connected to a rotating arc block (602), the surface of the rotating arc block (602) is wound with a movable rope (603), the end of the movable rope (603) is provided with a sealing component (604), the surface of the movable rope (603) is provided with a second movable ball (605), the surface of the movable rope (603) near the second movable ball (605) is also movably provided with a first storage column (606), the interior of the first storage column (606) is provided with a second storage column (609), the interior of the second storage column (609) is rotatably connected to a scraping component (607), and the first A matching component (608) is rotatably connected to one side of the second storage column (609) near the scraping component (607); a plurality of water holes (610) are provided in a circular array at the bottom of the second storage column (609) near the matching component (608); the bottom end of the second storage column (609) is threadedly connected to the first storage column (606) via a guide column (611); two groups of second rotating gears (6081) are provided on the surface of the matching component (608); the surfaces of the two groups of second rotating gears (6081) are meshed one by one with the two groups of first rotating gears (6071) provided on the surface of the scraping component (607); and the surface of the matching component (608) is also wound around a portion of the movable rope (603).

2. The groundwater pollution concentration detection sampling device according to claim 1 is characterized in that: The support mechanism (2) comprises a connecting block (24) arranged on the top of the loading shell (1); a fixed claw (21) is rotatably connected to the surface of the connecting block (24); a movable block (22) is slidably connected to the side of the surface of the connecting block (24) away from the fixed claw (21), and is rotatably connected to a synchronization rod (23) via the fixed claw (21); a threaded hole is provided inside the movable block (22), and a fixing bolt is threadedly connected to the inside of the threaded hole.

3. The groundwater pollution concentration detection sampling device according to claim 1 is characterized in that: A conical notch (7) is provided on the side of the loading housing (1) away from the driving motor (4), and the position of the conical notch (7) close to the driving motor (4) is a small notch.

4. The groundwater pollution concentration detection sampling device according to claim 1 is characterized in that: A card interface is provided on the surface of the sealing component (604), and an arc-shaped sealing block (6041) is arranged inside the card interface.

5. The groundwater pollution concentration detection sampling device according to claim 1 is characterized in that: The surface of the scraper assembly (607) is provided with two groups of first rotating gears (6071); a plurality of groups of circular collars (6072) are clamped on a side of the surface of the scraper assembly (607) away from the first rotating gears (6071); an adapter rod (6073) is fixedly connected to the surface of the circular collar (6072); and a scraper blade (6074) is fixedly connected to the end of the adapter rod (6073).

6. The groundwater pollution concentration detection sampling device according to claim 3 is characterized by: A cylinder (8) is provided on one side of the loading housing (1) close to the conical notch (7), and a pushing block (9) is fixedly connected to the output end of the cylinder (8).

7. The groundwater pollution concentration detection sampling device according to claim 2 is characterized by: A gripping block (10) is provided at one end of the connecting block (24), and anti-slip grooves are provided on the surface of the gripping block (10).

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