A groundwater pollution detection device

Abstract

This invention relates to the field of water resource testing, and more particularly to a groundwater pollution detection device. The technical problem is that current groundwater testing typically involves drilling a borehole at a designated location and then inserting a pumping device for extraction. This not only requires a long waiting time but also easily extracts water containing suspended particles, sediments, and colloidal pollutants, leading to pipe blockage and reducing testing progress and accuracy. A groundwater pollution detection device includes a fixed pipe; a grooved pipe is installed at the lower part of the fixed pipe, and four slots are cut into the grooved pipe. A threaded hollow pipe drives a connector to move synchronously, pushing the lower part of four support plates outward, which in turn drives the upper part of four grooved plates outward. After being supported within the soil, a chamber is formed to temporarily store groundwater. Groundwater in the chamber at the bottom of the grooved pipe is extracted and analyzed through a sleeve and an embedded pipe. A filter screen effectively filters impurities from the groundwater.

Description

Technical Field

[0001] This invention relates to the field of water resource testing, and more particularly to a groundwater pollution testing device. Background Technology

[0002] Groundwater resources need to be tested for pollution to ensure drinking water safety, protect the ecological environment, prevent and control pollution, ensure the quality of agricultural and industrial water use, comply with regulations, and maintain the sustainable use of groundwater. Inner Mongolia has many marsh wetlands, mainly distributed in the eastern and central regions, such as the Ergun Wetland in the Hulunbuir Grassland, the Hunshandake Sandy Land Wetland in the Xilin Gol Grassland, and the marshlands on the southern slope of the Greater Khingan Mountains. The soil of marsh wetlands is basically organic matter: the decomposition of plants in marsh wetlands forms peat or humus, and usually does not contain large particles of sand or hard soil layers.

[0003] Currently, when testing groundwater resources in marsh wetlands, drilling is typically performed at designated locations followed by the insertion of pumping equipment. This process requires a long wait to obtain a sufficient sample size and is prone to extracting water containing suspended particles, sediments, and colloidal contaminants, leading to blockages in the extraction pipes. This affects the stability and continuity of the extraction process, reduces extraction efficiency, and consequently impacts the progress and accuracy of the testing. Summary of the Invention

[0004] To overcome the shortcomings of current groundwater testing methods, which typically involve drilling at designated locations and inserting pumping equipment, resulting in long waiting times and the extraction of water containing suspended particles, sediments, and colloidal contaminants that can clog pipes and affect extraction stability and efficiency, ultimately reducing testing progress and accuracy, this invention provides a groundwater pollution detection device. This device applies pressure to the surrounding soil, promoting groundwater seepage and creating a temporary storage chamber underground. This improves water collection efficiency, reduces extraction delays due to insufficient water volume, and simultaneously filters the seeping groundwater multiple times to effectively remove suspended particles, sediments, and colloidal contaminants, ensuring relatively pure water extraction, preventing pipe blockage, improving extraction stability and continuity, accelerating groundwater sampling, and further optimizing the testing process. By reducing interference from impurities, it improves the accuracy of water quality parameter detection, enabling more precise analysis of heavy metals, organic pollutants, microorganisms, and other contaminants, providing more scientific and reliable data support for groundwater pollution assessment, source tracing analysis, and remediation solutions.

[0005] Technical solution: A groundwater pollution detection device includes a fixed pipe, a grooved pipe installed at the lower part of the fixed pipe, four slots on the grooved pipe, a cavity at the lower part of the grooved pipe, a screw cap threaded to the lower part of the grooved pipe, a filter screen on the screw cap, the cavity at the lower part of the grooved pipe is located below the filter screen, and sampling components are provided on the fixed pipe and the grooved pipe.

[0006] Furthermore, it is particularly preferred that a tripod is also included, with a tripod mounted on the upper part of the fixing tube for supporting the device.

[0007] Furthermore, it is particularly preferred that the sampling assembly includes a nut, a nut is installed on the upper part of the fixing tube, a threaded hollow tube is threadedly connected to the nut, a sleeve is installed on the threaded hollow tube, two sliders are slidably provided inside the threaded hollow tube, an insert is rotatably installed between the two sliders, the upper outer ring of the insert is hexagonal, the upper part of the insert is slidably connected to the sleeve, and a bearing seat is installed at the lower part of the groove tube, the lower part of the insert is rotatably connected to the bearing seat.

[0008] Furthermore, it is particularly preferred that the lower end of the insert tube rotates to pass through the filter screen, and the lower end of the insert tube is set with an oblique opening, which is located in the cavity at the lower part of the groove tube.

[0009] Furthermore, it is particularly preferred that the device also includes a drive assembly mounted on the threaded hollow tube. The drive assembly includes a dust cover, on the upper part of the threaded hollow tube, a turntable mounted on the dust cover, and a rotating handle rotatably mounted on the turntable.

[0010] Furthermore, it is particularly preferred that the expansion assembly installed on the grooved tube and the threaded hollow tube also includes a grooved plate. Each of the four grooves on the grooved tube is rotatably provided with a grooved plate at the bottom. Each grooved plate has a discharge port. Each of the four grooved plates is rotatably provided with a support plate at the top. The bottom of the threaded hollow tube is rotatably provided with a connector. The connector is hollow and the embedded tube passes through the connector. The upper parts of the four support plates are rotatably connected to the connector.

[0011] Furthermore, it is particularly preferred that the assembly also includes a blocking component mounted on the support plates. The blocking component includes a sealing plate. A groove is opened on one side of each of the four support plates that are close to each other. A sealing plate is installed on one side of each of the four support plates that are close to each other. A servo motor is installed in the groove of each of the four support plates. The four output shafts of the four servo motors rotate through the four sealing plates respectively. A stop plate is installed on each of the four output shafts of the four servo motors.

[0012] Furthermore, it is particularly preferred that the device also includes an anti-clogging component installed on the cap and the insert. The anti-clogging component includes sliding rods. Two sliding rods are slidably provided at the bottom of the cap. Two return springs are connected between the top of the two sliding rods and the cap. A punch holder is provided in the middle of the two sliding rods. Several punch rods are evenly spaced on the side of the punch holder near the filter screen. A corrugated frame is installed at the lower part of the insert. A corrugated surface is provided on the corrugated frame. A ball is embedded at the lower end of each of the two sliding rods. The corrugated surface on the corrugated frame contacts the two balls.

[0013] Furthermore, it is particularly preferred that the tube also includes an arc-shaped mesh cover, which is slidably provided at the lower part of the tube. A magnetic ring is provided at the bottom of the arc-shaped mesh cover, and the magnetic ring at the bottom of the arc-shaped mesh cover is attached to the iron screw cap.

[0014] In addition, it is particularly preferred that the device also includes a brush holder, which is slidably provided at the lower part of the tube. The brush holder is provided with a number of bristles, and the bristles on the brush holder are in contact with the arc-shaped mesh cover. A compression spring is connected between the brush holder and the tube.

[0015] The beneficial effects of this invention are as follows: 1. The rotating handle drives the turntable, dust cover, threaded hollow tube, sleeve, slider, and embedded tube to rotate. Under the action of the nut, the threaded hollow tube rotates and moves towards the filter screen. The threaded hollow tube drives the connector to move synchronously. The connector pushes the lower part of the four support plates to expand outward. The four support plates drive the upper part of the four groove plates to expand outward. After being supported in the soil, a chamber for temporarily storing groundwater is formed, and the surrounding soil is subjected to pressure, so that the groundwater seeps out of the soil, is filtered by the filter screen, and flows into the bottom cavity of the groove tube. The operator connects a pumping device to the sleeve and extracts the groundwater in the bottom cavity of the groove tube for testing and analysis through the sleeve and embedded tube. The filter screen can effectively filter impurities in the groundwater, prevent impurities from clogging the sleeve and embedded tube, and improve the accuracy of the test. At the same time, the squeezing effect of the expansion structure on the soil improves the infiltration efficiency of groundwater, making the extraction process more efficient and stable.

[0016] 2. After the four support plates and four slotted plates expand, the operator controls the output shafts of the four servo motors to rotate 90 degrees and then stop. The output shafts of the servo motors drive the four baffles to rotate 90 degrees synchronously. After the baffles rotate, they provide effective support for the top soil, preventing soil collapse, ensuring the stability of the chamber, and improving the temporary storage efficiency and extraction safety of groundwater. When the four support plates and four slotted plates need to retract and reset, the operator controls the output shafts of the four servo motors to rotate 90 degrees in the opposite direction and then stop. The output shafts of the servo motors drive the four baffles to rotate 90 degrees in the opposite direction, so that the baffles return to their initial position, preparing for subsequent operations and avoiding the normal use of the equipment due to the baffles being in an expanded state.

[0017] 3. When the insert tube rotates, it drives the corrugated frame to rotate. Under the action of the corrugated surface on the corrugated frame and the return spring, the two sliding rods drive the stamping frame to move up and down reciprocally. The ball bearings on the corrugated surface of the corrugated frame act as guides, causing the stamping rods on the stamping frame to continuously push the impurities on the filter screen, preventing impurities from clogging the filter screen, improving the water permeability of the filter screen, thereby accelerating the collection speed of groundwater and improving the detection efficiency. The arc-shaped mesh cover performs preliminary filtration of impurities by increasing the filtration area, reducing the impurities entering the filter screen, and improving the durability and stability of the overall filtration system. At the same time, when the insert tube rotates, it drives the brush frame to rotate. Under the action of the downward pressure spring, the bristles on the brush frame closely adhere to the mesh holes on the arc-shaped mesh cover and continuously clean it, preventing impurities from accumulating and affecting the filtration effect, further improving the water permeability of the arc-shaped mesh cover and the filter screen, improving the collection efficiency of groundwater, and making the detection process more efficient and stable. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the driving component of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram showing the disassembled parts of the sampling component and driving component of the present invention.

[0021] Figure 4 This is a first cross-sectional three-dimensional structural diagram of the sampling component and driving component of the present invention.

[0022] Figure 5 This is a second cross-sectional three-dimensional structural diagram of the sampling component and driving component of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the extended component of the present invention.

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the expanded component of the present invention after it has been unfolded.

[0025] Figure 8 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram showing the disassembled parts of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the sampling component and the expansion component of the present invention.

[0028] Figure 11 This is a cross-sectional three-dimensional structural diagram of the sampling component and the expansion component of the present invention.

[0029] Figure 12This is a three-dimensional structural diagram of the blocking component of the present invention.

[0030] Figure 13 This is a three-dimensional structural diagram of the arc-shaped mesh cover, brush holder, and compression spring of the present invention.

[0031] Figure 14 This is a three-dimensional structural diagram of the anti-clogging component of the present invention.

[0032] Figure 15 This is a three-dimensional structural diagram showing the disassembled parts of the anti-blocking component of the present invention.

[0033] Figure 16 This is a three-dimensional structural diagram showing the disassembled parts of the expansion component and the blocking component of the present invention.

[0034] Figure 17 This is a schematic diagram of the first three-dimensional structure of the expanded component and the blocking component of the present invention after they are unfolded.

[0035] Figure 18 This is a schematic diagram of the second three-dimensional structure of the expanded component and the blocking component of the present invention after they are unfolded.

[0036] The meanings of the reference numerals in the diagram are as follows: 1. Fixed tube, 2. Grooved tube, 21. Tripod, 3. Screw cap, 4. Filter screen, 51. Nut, 52. Threaded hollow tube, 53. Sleeve, 531. Slider, 532. Bearing seat, 54. Embedded tube, 61. Dust cover, 62. Turntable, 63. Rotary handle, 71. Groove plate, 72. Support plate, 73. Connector, 81. Sealing plate, 82. Servo motor, 83. Stop plate, 91. Slide rod, 911. Ball bearing, 92. Return spring, 93. Stamp holder, 94. Corrugated frame, 10. Arc-shaped mesh cover, 11. Brush holder, 12. Downward pressure spring. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0038] Example 1: A groundwater pollution detection device, such as Figures 1-16As shown, the device includes a fixed pipe 1, a grooved pipe 2 installed at the lower part of the fixed pipe 1, four slots on the grooved pipe 2, and a cavity for collecting groundwater at the lower part of the grooved pipe 2. The groundwater enters the cavity at the lower part of the grooved pipe 2 through the four slots. A screw cap 3 is threaded onto the lower part of the grooved pipe 2. The screw cap 3 is made of iron and has a filter screen 4 on it. The cavity at the lower part of the grooved pipe 2 is located below the filter screen 4. Sampling components for extracting the collected groundwater are provided on the fixed pipe 1 and the grooved pipe 2.

[0039] It also includes a tripod 21, which is mounted on the upper part of the fixing tube 1 to support the device.

[0040] The sampling assembly includes a nut 51. A nut 51 is fixedly installed on the upper part of the fixed tube 1. A threaded hollow tube 52 is threadedly connected to the nut 51. A sleeve 53 is installed on the threaded hollow tube 52. Two sliders 531 are slidably provided inside the threaded hollow tube 52. An embedded tube 54 is rotatably installed between the two sliders 531. The threaded hollow tube 52 slides up and down along the two sliders 531. The outer ring of the upper part of the embedded tube 54 is hexagonal. The upper part of the embedded tube 54 is slidably connected to the sleeve 53. The upper part of the embedded tube 54 and the sleeve 53 fit tightly together. A bearing seat 532 is installed at the lower part of the groove tube 2. The lower part of the embedded tube 54 and the bearing seat 532 are rotatably connected by a waterproof bearing.

[0041] The lower end of the insert tube 54 rotates through the filter screen 4. The lower end of the insert tube 54 is set at an angle, and the angled opening at the lower end of the insert tube 54 is located in the cavity at the lower part of the groove tube 2.

[0042] It also includes a drive assembly installed on the threaded hollow tube 52. The drive assembly includes a dust cover 61. A dust cover 61 is bolted to the upper part of the threaded hollow tube 52. A turntable 62 is fixedly installed on the dust cover 61. A handle 63 is rotatably provided on the turntable 62 via a bearing.

[0043] It also includes an expansion assembly installed on the trench pipe 2 and the threaded hollow pipe 52. The expansion assembly is used to expand the underground space and compress the surrounding soil. The expansion assembly includes a trench plate 71. The lower part of each of the four slots on the trench pipe 2 is provided with a trench plate 71 through a bearing. Each trench plate 71 has a discharge port. The discharge port on the trench plate 71 is used to discharge the soil and impurities in the trench pipe 2 when the trench plate 71 and the support plate 72 are reset. The upper part of each of the four trench plates 71 is provided with a support plate 72 through a bearing. The bottom of the threaded hollow pipe 52 is provided with a connector 73 through a bearing. The connector 73 is hollow. The embedded tube 54 passes through the connector 73. The upper part of each of the four support plates 72 is rotatably connected to the connector 73 through a bearing.

[0044] When groundwater pollution needs to be detected, the operator first drills a hole at a designated location on the ground. Then, the device is moved above the drilled hole, allowing the fixed pipe 1, grooved pipe 2, cap 3, filter screen 4, threaded hollow pipe 52, slider 531, insert pipe 54, grooved plate 71, support plate 72, and connector 73 to extend into the drilled hole. The tripod 21 is then deployed and its position adjusted to stabilize the device. Next, the operator holds the handle 63, which rotates the turntable 62, dust cover 61, threaded hollow pipe 52, sleeve 53, slider 531, and insert pipe 54. Under the action of the nut 51, the threaded hollow pipe 52 rotates and moves closer to the filter screen 4. The threaded hollow pipe 52 moves along the slider 531 towards the filter screen 4, and the threaded hollow pipe 52 drives the sleeve 53 to move along the insert pipe 54 towards the filter screen 4. Hollow tube 52 drives connector 73 to move closer to filter screen 4. Connector 73 pushes the lower part of four support plates 72 to expand in a direction away from each other. The four support plates 72 drive the upper part of four groove plates 71 to expand in a direction away from each other. Through the expansion of the four support plates 72 and the four groove plates 71, a chamber for temporarily storing groundwater can be opened in the soil. When the four support plates 72 and the four groove plates 71 expand, they squeeze the surrounding soil, which can squeeze out the groundwater in the surrounding soil. After the groundwater seeps out of the soil, it is filtered by filter screen 4 and flows into the cavity at the bottom of the groove tube 2. The operator connects a water pump to the sleeve 53 and pumps the groundwater in the cavity at the bottom of the groove tube 2 through the sleeve 53 and the embedded tube 54. Then, it is tested and analyzed. The impurities in the groundwater are filtered by the filter screen 4, which can prevent impurities from clogging the sleeve 53 and the embedded tube 54, and can also improve the accuracy of the test.After the groundwater test is completed, the operator holds the handle 63 and rotates the turntable 62, dust cover 61, threaded hollow tube 52, sleeve 53, slider 531, and embedded tube 54 in opposite directions. Under the action of nut 51, the threaded hollow tube 52 rotates and moves away from the filter screen 4. The threaded hollow tube 52 moves along the slider 531 away from the filter screen 4. The threaded hollow tube 52 drives the sleeve 53 to move along the embedded tube 54 away from the filter screen 4. The threaded hollow tube 52 drives the connector 73 to move away from the filter screen 4. The connector 73 pushes the lower part of the four support plates 72 to retract and reset towards each other. The four support plates 72 drive the upper part of the four groove plates 71 to retract and reset towards each other. During the retraction and reset process of the four support plates 72 and the four groove plates 71, a small amount of soil and impurities in the groove tube 2 are released. The material can be discharged through the discharge ports on the four slot plates 71. After the four support plates 72 and the four slot plates 71 are reset, the operator removes the device from the drilled hole and then places it into the next location where groundwater needs to be tested. This process is repeated to quickly obtain the groundwater to be tested without damaging the surface, reducing waiting time and filtering impurities to improve the accuracy of the test. If there are many impurities in the lower cavity of the slot tube 2, the operator can unscrew the cap 3 to clean the lower cavity of the slot tube 2, and then rotate the cap 3 in the opposite direction to reset it. The soil of the swamp is mainly composed of organic matter, is loose and rich in humus, and usually does not contain large particles of sand or hard soil layers. Therefore, the soil environment of the swamp will not hinder the opening or closing of the support plates 72 and the slot plates 71.

[0045] Example 2: Based on Example 1, such as Figures 12-18 As shown, it also includes a blocking assembly installed on the support plate 72. The blocking assembly is used to block the top soil. The blocking assembly includes a sealing plate 81. A sinkhole is opened on the side of the four support plates 72 that are close to each other. A sealing plate 81 is installed on the side of the four support plates 72 that are close to each other. A servo motor 82 is installed in the sinkhole of each of the four support plates 72. The four output shafts of the four servo motors 82 respectively rotatably pass through the four sealing plates 81 through waterproof bearings. A baffle plate 83 is installed on the four output shafts of the four servo motors 82. The baffle plate 83 is used to prevent soil collapse.

[0046] After the four support plates 72 and four groove plates 71 expand, the operator controls the output shafts of the four servo motors 82 to rotate 90 degrees and then stop. The output shafts of the four servo motors 82 drive the four baffle plates 83 to rotate 90 degrees and then stop. After the four baffle plates 83 rotate, they will support the top soil and prevent the top soil from collapsing. When the four support plates 72 and four groove plates 71 need to retract and reset, the operator controls the output shafts of the four servo motors 82 to rotate 90 degrees in the opposite direction and then stop. The output shafts of the four servo motors 82 drive the four baffle plates 83 to rotate 90 degrees in the opposite direction and then stop.

[0047] Example 3: Based on Example 2, such as Figures 13-15 As shown, it also includes an anti-clogging component installed on the cap 3 and the insert tube 54. The anti-clogging component is used to unclog the filter screen 4. The anti-clogging component includes a slide rod 91. Two slide rods 91 are slidably provided at the bottom of the cap 3. Two return springs 92 are connected between the top of the two slide rods 91 and the cap 3. A poking frame 93 is provided in the middle of the two slide rods 91. Several poking rods are evenly spaced on the side of the poking frame 93 near the filter screen 4. A corrugated frame 94 is installed at the lower part of the insert tube 54. A corrugated surface is provided on the corrugated frame 94. A ball bearing 911 is embedded in the lower end of each of the two slide rods 91. The corrugated surface on the corrugated frame 94 contacts the two ball bearings 911.

[0048] It also includes an arc-shaped mesh cover 10. The lower part of the embedded tube 54 is provided with an arc-shaped mesh cover 10 in a sliding manner. A magnetic ring is provided at the bottom of the arc-shaped mesh cover 10. The magnetic ring at the bottom of the arc-shaped mesh cover 10 is attached to the iron screw cap 3.

[0049] It also includes a brush holder 11. A brush holder 11 is slidably provided at the lower part of the embedded tube 54. The brush holder 11 is provided with a number of brush bristles. The brush bristles on the brush holder 11 are in contact with the arc-shaped mesh cover 10. A downward pressure spring 12 is connected between the brush holder 11 and the embedded tube 54.

[0050] When the insert tube 54 rotates, it drives the corrugated frame 94 to rotate. Under the action of the corrugated surface on the corrugated frame 94 and the return spring 92, the two slide rods 91 drive the stamping frame 93 to move up and down continuously. The ball bearing 911 plays a guiding role on the corrugated surface on the corrugated frame 94. The stamping rod on the stamping frame 93 pushes the impurities on the filter screen 4, thereby preventing the impurities from clogging the filter screen 4, improving the water permeability of the filter screen 4, further improving the collection speed of groundwater, and thus accelerating the detection efficiency of groundwater.

[0051] The curved mesh cover 10 increases the filtration area and allows for preliminary filtration of impurities, reducing the amount of impurities entering the filter screen 4. Furthermore, the rotation of the insert tube 54 drives the brush holder 11 to rotate. Under the action of the downward spring 12, the bristles on the brush holder 11 make close contact with the mesh openings of the curved mesh cover 10, continuously cleaning impurities from the curved mesh cover 10. This further improves the permeability of the curved mesh cover 10 and the filter screen 4, further increasing the groundwater collection speed and accelerating groundwater detection efficiency. When there are many impurities on the filter screen 4, the operator can lift the arc-shaped mesh cover 10 upwards. The magnetic ring on the arc-shaped mesh cover 10 separates from the iron cap 3. The arc-shaped mesh cover 10 drives the brush holder 11 to move upwards, and the downward pressure spring 12 is compressed accordingly. Then the operator can clean the impurities on the filter screen 4. After the impurities on the filter screen 4 are cleaned, the operator releases the arc-shaped mesh cover 10. Under the action of the downward pressure spring 12, the brush holder 11 pushes the arc-shaped mesh cover 10 downwards to reset. The magnetic ring on the arc-shaped mesh cover 10 is attracted to the iron cap 3 again.

[0052] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A groundwater pollution detection device, characterized in that, The system includes a fixed tube (1), a grooved tube (2) installed at the lower part of the fixed tube (1), four slots on the grooved tube (2), a cavity at the lower part of the grooved tube (2), a screw cap (3) threaded to the lower part of the grooved tube (2), a filter screen (4) on the screw cap (3), the cavity at the lower part of the grooved tube (2) is located below the filter screen (4), and sampling components are provided on the fixed tube (1) and the grooved tube (2); the sampling components include a nut (51), a nut (51) installed at the upper part of the fixed tube (1), a threaded hollow tube (52) threadedly connected to the nut (51), a sleeve (53) installed on the threaded hollow tube (52), two sliders (531) slidingly provided inside the threaded hollow tube (52), and an embedded tube (54) rotatably installed between the two sliders (531), the upper part of the embedded tube (54) has an outer The ring is hexagonal, the upper part of the insert (54) is slidably connected to the sleeve (53), a bearing seat (532) is installed at the lower part of the groove tube (2), and the lower part of the insert (54) is rotatably connected to the bearing seat (532); it also includes an expansion assembly installed on the groove tube (2) and the threaded hollow tube (52), the expansion assembly includes a groove plate (71), the lower part of the four slots on the groove tube (2) is rotatably provided with a groove plate (71), each groove plate (71) has a discharge port, the upper part of the four groove plates (71) is rotatably provided with a support plate (72), the bottom of the threaded hollow tube (52) is rotatably provided with a connector (73), the connector (73) is hollow, the insert (54) passes through the connector (73), and the upper part of the four support plates (72) is rotatably connected to the connector (73); It also includes an anti-clogging component installed on the cap (3) and the insert (54). The anti-clogging component includes a slide rod (91). The bottom of the cap (3) is provided with two slide rods (91). The top of the two slide rods (91) is connected to the cap (3) with two return springs (92). A poking frame (93) is provided in the middle of the two slide rods (91). Several poking rods are evenly spaced on the side of the poking frame (93) near the filter screen (4). A corrugated frame (94) is installed at the bottom of the insert (54). A corrugated surface is provided on the corrugated frame (94). A ball (911) is embedded in the lower end of each of the two slide rods (91). The corrugated surface on the corrugated frame (94) is in contact with the two balls (911). It also includes an arc-shaped mesh cover (10), and an arc-shaped mesh cover (10) is provided in a sliding manner at the lower part of the embedded tube (54). A magnetic ring is provided at the bottom of the arc-shaped mesh cover (10), and the magnetic ring at the bottom of the arc-shaped mesh cover (10) is attached to the iron screw cap (3). It also includes a brush holder (11), a brush holder (11) is slidably provided at the lower part of the insert (54), the brush holder (11) is provided with a number of brush bristles, the brush bristles on the brush holder (11) are in contact with the arc-shaped mesh cover (10), and a downward pressure spring (12) is connected between the brush holder (11) and the insert (54).

2. The groundwater pollution detection device according to claim 1, characterized in that, It also includes a tripod (21), with a tripod (21) mounted on the upper part of the fixing tube (1) for supporting the device.

3. A groundwater pollution detection device according to claim 1, characterized in that, The lower end of the insert tube (54) rotates through the filter screen (4). The lower end of the insert tube (54) is set with an oblique opening, and the oblique opening at the lower end of the insert tube (54) is located in the cavity at the lower part of the groove tube (2).

4. A groundwater pollution detection device according to claim 2, characterized in that, It also includes a drive assembly mounted on a threaded hollow tube (52), the drive assembly including a dust cover (61), a dust cover (61) mounted on the upper part of the threaded hollow tube (52), a turntable (62) mounted on the dust cover (61), and a rotating handle (63) rotatably mounted on the turntable (62).

5. A groundwater pollution detection device according to claim 4, characterized in that, It also includes a blocking assembly installed on the support plate (72). The blocking assembly includes a sealing plate (81). A groove is opened on the side of the four support plates (72) that are close to each other. A sealing plate (81) is installed on the side of the four support plates (72) that are close to each other. A servo motor (82) is installed in the groove of each of the four support plates (72). The four output shafts of the four servo motors (82) rotate through the four sealing plates (81) respectively. A baffle plate (83) is installed on the four output shafts of the four servo motors (82).

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