Geophysical water sampling equipment and method for groundwater pollution investigation

Abstract

The invention relates to the field of sewage sampling, and discloses geophysical water sampling equipment and method for groundwater pollution investigation, and the geophysical water sampling equipment comprises a water taking device, a water pumping pipe, a connecting column and an upper cover; the water taking device further comprises a filtering water taking unit arranged in the water taking device; the water pumping pipe is fixedly arranged on one side of the water taking device; the connecting columns are uniformly and fixedly arranged at the top of the water taking device at equal intervals; when the upper cover is fixedly arranged in the hole in the top of the connecting column, the hole collapses so that underground water can be covered, the water taking device placed in the hole cannot obtain the underground water in the hole, the driving assembly on the water taking device drives the drilling assembly to rotate, the drilling assembly drills and collapses down a soil layer, and the water taking device can take the underground water out of the hole. And the water taking device can reach an underground water flowing area, so that the water taking device can stably take out underground water.

Description

Technical Field

[0001] The invention relates to the field of sewage sampling, and in particular to geophysical water sampling equipment and methods for groundwater pollution investigation. Background Art

[0002] Groundwater pollution investigation is the basis and starting point of groundwater pollution research. Its main purpose is to detect and identify underground pollutants, measure the concentration of pollutants, find out the migration characteristics of pollutants in the groundwater system, and determine the direction and speed of groundwater flow.

[0003] Patent No. CN116754289B discloses an underground sewage sampling device, in which a rotating circle is arranged on the upper side of a supporting platform, and a reciprocating rotating component is arranged between the rotating circle and the supporting platform; there are two support frames, which are relatively arranged on the left and right sides of the rotating circle; and the support frame is an inverted "L" shaped structure; there are two sampling tubes, which are respectively arranged at the bottom of the vertical end of the support frame; there are two winding components, which are respectively arranged between the support frame and the sampling tube; it is capable of quantitatively sampling sewage, and manual sampling operation is not required during the sampling process; while improving the sampling efficiency, it reduces the operating intensity of personnel.

[0004] In the prior art, sewage can be sampled quantitatively by setting up a support frame and a sampling bucket. However, some sewage that flows deep into the rock layer will mix with groundwater and pollute the water source environment. Therefore, technicians will use drilling machinery to drill holes in places where groundwater needs to be extracted, and extract groundwater for testing. However, in some areas with poor geology, the holes drilled by drilling machinery will collapse, resulting in the water sampling instrument being unable to successfully obtain groundwater after entering the hole. The drilling machinery has to drill again, and then the groundwater source obtained again is a waste of time and sampling costs. Summary of the invention

[0005] The purpose of the present invention is to provide a geophysical water sampling device and method for groundwater pollution investigation to solve the following technical problems:

[0006] In some areas with poor geology, the holes drilled by drilling machines may collapse, resulting in the inability of water sampling instruments to smoothly obtain groundwater after entering the holes. The drilling machine has to drill again, and then the groundwater source obtained again is a waste of time and sampling costs.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A geophysical water sampling device for groundwater pollution investigation comprises a water collector, a water pumping pipe, a connecting column and an upper cover; and also comprises a filtering water collecting unit arranged in the water collector;

[0009] The water extraction pipe is fixedly arranged on one side of the water extractor;

[0010] The connecting columns are fixedly arranged equidistantly and uniformly on the top of the water intake device;

[0011] The upper cover is fixedly arranged on the top of the connecting columns;

[0012] The filtering and water intake unit is arranged inside the water intake device, and includes a driving component, a drilling component, a cleaning component, a filtering component and a sewage discharging component; the driving component drives the drilling component to rotate; the driving component drives the cleaning component to rotate; the driving component drives the filtering component to rotate; the driving component drives the sewage discharging component to rotate;

[0013] The water intake device and the upper cover are sent to a specified position, and then the driving component drives the drilling component to rotate to drill the rock and soil, so that the water intake device can be completely placed in the groundwater, enabling the groundwater to enter the water intake device. The driving component also drives the cleaning component to rotate to clean the muddy water, allowing the groundwater to enter the water intake device. After the groundwater enters the water intake device, the driving component drives the filtering component to rotate. The filtering component filters the groundwater, and the filtered groundwater falls to the bottom of the water intake device. Then the groundwater is pumped out by the water extraction pipe, and the filtered impurities are discharged from the water intake device by the driving component driving the sewage discharging component, so that groundwater can be continuously obtained subsequently.

[0014] Further, the driving component includes a support column, a driving motor, a rotating column, a bevel gear and a lower driving gear;

[0015] The drilling component includes a vacuum driving shaft, a support rod, a connecting shaft, a rotating shaft and a drill bit;

[0016] Among them, the support column is fixedly arranged on the top of the upper cover; the rotating column is rotatably arranged on the support column; the driving motor is fixedly arranged on the support column; the driving motor is communicated with the rotating column; the bevel gear is fixedly arranged on the rotating column; the rotating shaft is rotatably arranged at the bottom of the water intake device and penetrates through the water intake device; the connecting shaft is fixedly arranged on the top of the rotating shaft; there are two support rods, which are symmetrically and fixedly arranged on the top of the connecting shaft; the vacuum driving shaft is fixedly arranged on the top of the support rod; the lower driving gear is fixedly arranged on the top of the vacuum driving shaft; the lower driving gear meshes with the bevel gear; the drill bit is fixedly arranged at the bottom of the rotating shaft.

[0017] Further, the cleaning component includes a support plate, a cleaning plate and a water inlet;

[0018] Wherein, the support plate is fixedly arranged on the vacuum drive shaft; the cleaning plate is fixedly arranged at the other end of the support plate, and the cleaning plate slides in the gap between the water intake device and the upper cover; the water inlet is opened on the water intake device.

[0019] Further, the filtering component includes a scraping plate, a filtering funnel and filtering holes;

[0020] Wherein, the filtering funnel is fixedly arranged in the middle of the inner layer of the water intake device; the filtering holes are opened on the filtering funnel; the scraping plate is fixedly arranged on the vacuum drive shaft, and the scraping plate slides on the surface layer of the filtering funnel.

[0021] Further, the sewage discharging component includes a spiral drive shaft, spiral blades and an upper drive gear;

[0022] Wherein, the spiral drive shaft is rotatably arranged at the central position of the top of the connecting shaft; the upper drive gear is fixedly arranged at the top of the spiral drive shaft; the upper drive gear meshes with the bevel gear; the spiral blades are fixedly arranged on the spiral drive shaft.

[0023] Further, there are two support plates, which are symmetrically arranged on the vacuum drive shaft; there are multiple water inlets, which are evenly arranged at equal intervals on the water intake device.

[0024] Further, there are two scraping plates, which are symmetrically arranged on the vacuum drive shaft; there are multiple filtering holes, which are evenly arranged at equal intervals on the filtering funnel.

[0025] The geophysical water sampling method for groundwater pollution investigation, the sampling method includes the following steps:

[0026] S1: When it is necessary to take groundwater at a specified position for detection, first place the water intake device, the connecting column and the upper cover into the specified hole;

[0027] S2: After the water intake device is sent in, the lower drive gear rotates to drive the rotating shaft and the drill bit to rotate, clean the hole, so that the water intake device can smoothly reach the water intake point and take water;

[0028] S3: The groundwater will enter the interior of the water intake device through the water inlet on the water intake device, and then the cleaning plate will be driven to rotate by the rotation of the vacuum drive shaft to prevent the inlet from being blocked by mud. After the groundwater enters the water intake device, it will fall onto the filtering funnel and be filtered by the filtering funnel to obtain groundwater without sand and gravel;

[0029] S4: The groundwater without sand and gravel will fall to the bottom of the water intake device, and then the groundwater without sand and gravel will be sent out of the water intake device through the water extraction pipe. The filtered sand and gravel will be discharged from the water intake device by the rotation of the spiral drive shaft and the spiral blades, keeping the area above the filtering funnel clean.

[0030] Advantages of the present invention:

[0031] (1) Collapse holes will appear in the holes, covering the groundwater, making it impossible for the water intake device placed in the holes to obtain the groundwater in the holes. Therefore, the driving component on the water intake device drives the drilling component to rotate, and the drilling component will drill the collapsed soil layer, enabling the water intake device to reach the area where the groundwater flows, so that the water intake device can stably extract groundwater.

[0032] (2) When the water intake device is taking water, due to the disturbance of the soil and groundwater, a large amount of mud will appear. Therefore, when the water intake device takes water, the driving component drives the cleaning component to rotate, and the rotating cleaning component will clean the water intake part of the water intake device, allowing the groundwater to smoothly enter the water intake device, avoiding the water intake part of the water intake device being blocked by mud, resulting in the inability to smoothly obtain groundwater.

[0033] (3) After the groundwater enters the water intake device, due to the disturbance of the water source, there are relatively many impurities in the groundwater entering the water intake device, and there is also a large amount of sediment. Therefore, the driving component drives the filtering component to rotate, filtering the groundwater entering the water intake device, filtering out the mud and sand impurities in the groundwater, and the filtered groundwater will fall to the lower part of the water intake device, and then the filtered groundwater will be extracted from the water intake device through the water extraction pipe.

[0034] (4) After the groundwater is filtered, a large amount of residual impurities will remain above the filtering component. To prevent these residual impurities from accumulating too much and affecting the filtering efficiency, the driving component drives the sewage discharge component to rotate, and the rotating sewage discharge component cleans and discharges the mud impurities parked above the filtering component from the water intake device, keeping the area above the filtering component clean and enabling the smooth filtering of the sediment impurities in the groundwater. Description of the drawings

[0035] The present invention will be further described below with reference to the drawings.

[0036] Figure 1 It is a top-down perspective view of the water intake equipment of the present invention;

[0037] Figure 2 It is a sectional view of the water intake device in the present invention;

[0038] Figure 3 It is Figure 2 The enlarged view at A in

[0039] Figure 4 Isometric view of the drilling component in the present invention;

[0040] Figure 5 Isometric view of the cleaning component in the present invention;

[0041] Figure 6 Isometric view of the filtering component in the present invention;

[0042] Figure 7 Isometric view of the sewage discharge component in the present invention;

[0043] Figure 8 Bottom-up isometric view of the water intake device of the present invention.

[0044] Description of the drawings: 1. Water intake; 2. Drill bit; 3. Connecting column; 4. Cleaning plate; 5. Water inlet; 6. Suction pipe; 7. Upper cover; 8. Support column; 9. Driving motor; 10. Upper driving gear; 11. Spiral blade; 12. Lower driving gear; 13. Rotating column; 14. Bevel gear; 15. Rotating shaft; 16. Spiral driving shaft; 17. Scraper; 18. Filter funnel; 19. Vacuum driving shaft; 20. Connecting shaft; 21. Support plate; 22. Support rod; 23. Filter hole; 24. Drilling component; 25. Cleaning component; 26. Filtering component; 27. Sewage discharge component. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0046] Please refer to Figures 1-8 As shown, the present invention is a geophysical water sampling device for groundwater pollution investigation, including a water intake 1, a suction pipe 6, a connecting column 3 and an upper cover 7; it also includes a filtered water intake unit arranged in the water intake 1;

[0047] The suction pipe 6 is fixedly arranged on one side of the water intake 1;

[0048] The connecting columns 3 are fixedly arranged on the top of the water intake 1 at equal intervals and evenly;

[0049] The upper cover 7 is fixedly arranged on the top of the connecting column 3;

[0050] The filtering and water intake unit is arranged inside the water intake device 1 and includes a driving component, a drilling component 24, a cleaning component 25, a filtering component 26, and a sewage discharging component 27; the driving component drives the drilling component 24 to rotate; the driving component drives the cleaning component 25 to rotate; the driving component drives the filtering component 26 to rotate; the driving component drives the sewage discharging component 27 to rotate;

[0051] The water intake device 1 and the upper cover 7 are sent to the designated position, and then the driving component drives the drilling component 24 to rotate to drill the rock and soil, so that the water intake device 1 can be completely placed in the groundwater, and the groundwater enters the water intake device 1. The driving component also drives the cleaning component 25 to rotate to clean the muddy water, so that the groundwater can enter the water intake device 1. After the groundwater enters the water intake device 1, the driving component drives the filtering component 26 to rotate. The filtering component 26 filters the groundwater, and the filtered groundwater falls to the bottom of the water intake device 1. Then the groundwater is pumped out by the water extraction pipe 6, and the filtered impurities are discharged from the water intake device 1 by the driving component driving the sewage discharging component 27, so that groundwater can be continuously obtained subsequently;

[0052] After the drilling machine makes an opening on the ground surface, the water intake device 1 and the upper cover 7 connected by the connecting column 3 are put into the hole. Generally, the drilling depth of the drilling machine is dozens of meters. If the surrounding soil is relatively wet and loose, when the drilling machine is lifted, the hole may collapse, covering the groundwater, making the water intake device 1 placed in the hole unable to obtain the groundwater in the hole. Therefore, the driving component on the water intake device 1 drives the drilling component 24 to rotate, and the drilling component 24 drills the collapsed soil layer, so that the water intake device 1 can reach the area where the groundwater flows, enabling the water intake device 1 to stably extract groundwater;

[0053] When the water intake device 1 takes water, due to the disturbance of the soil and groundwater, a large amount of mud will appear. Therefore, when the water intake device 1 takes water, the driving component drives the cleaning component 25 to rotate. The rotating cleaning component 25 will clean the water intake part of the water intake device 1, so that the groundwater can smoothly enter the water intake device 1, avoiding the water intake part of the water intake device 1 being blocked by mud, resulting in the inability to smoothly obtain groundwater;

[0054] After the groundwater enters the water intake device 1, due to the disturbance of the water source, there are relatively many impurities in the groundwater entering the water intake device 1, and there is also a large amount of sediment. Therefore, the driving component drives the filtering component 26 to rotate to filter the groundwater entering the water intake device 1, filtering out the mud and sand impurities in the groundwater. The filtered groundwater will fall to the lower part of the water intake device 1, and then the filtered groundwater is pumped out of the water intake device 1 through the water extraction pipe 6;

[0055] After the groundwater is filtered, a large amount of residual impurities will remain above the filter component 26. To prevent these residual impurities from accumulating too much and affecting the filtration efficiency, the sewage discharge component 27 is driven by the driving component to rotate. The rotating sewage discharge component 27 clears and discharges the mud impurities parked above the filter component 26 from the water intake device 1, keeping the area above the filter component 26 clean and enabling the smooth filtration of sediment impurities in the groundwater.

[0056] Please refer to Figure 1 、 Figure 2 、 Figure 4 and Figure 8 As shown in

[0057] The drilling component 24 includes a vacuum drive shaft 19, a support rod 22, a connecting shaft 20, a rotating shaft 15, and a drill bit 2.

[0058] Among them, the support column 8 is fixedly arranged on the top of the upper cover 7; the rotating column 13 is rotatably arranged on the support column 8; the drive motor 9 is fixedly arranged on the support column 8; the drive motor 9 is connected to the rotating column 13; the bevel gear 14 is fixedly arranged on the rotating column 13; the rotating shaft 15 is rotatably arranged at the bottom of the water intake device 1, and the rotating shaft 15 penetrates through the water intake device 1; the connecting shaft 20 is fixedly arranged on the top of the rotating shaft 15; two support rods 22 are provided and symmetrically fixedly arranged on the top of the connecting shaft 20; the vacuum drive shaft 19 is fixedly arranged on the top of the support rod 22; the lower drive gear 12 is fixedly arranged on the top of the vacuum drive shaft 19; the lower drive gear 12 meshes with the bevel gear 14; the drill bit 2 is fixedly arranged at the bottom of the rotating shaft 15.

[0059] The drive motor 9 on the support column 8 drives the rotating column 13 to rotate. The rotating rotating column 13 drives the bevel gear 14 to rotate. The rotating bevel gear 14 drives the lower drive gear 12 to rotate. The rotation of the lower drive gear 12 drives the vacuum drive shaft 19, the support rod 22, the connecting shaft 20, and the rotating shaft 15 to rotate. The rotating rotating shaft 15 causes the drill bit 2 to rotate, and the rotating drill bit 2 drills the soil in the hole, enabling the water intake device 1 to reach the designated water intake layer.

[0060] Please refer to Figure 2 、 Figure 3 and Figure 5 As shown in

[0061] Among them, the support plate 21 is fixedly arranged on the vacuum drive shaft 19; the cleaning plate 4 is fixedly arranged at the other end of the support plate 21, and the cleaning plate 4 slides in the gap between the water intake 1 and the upper cover 7; the water inlet 5 is opened on the water intake 1;

[0062] The rotation of the vacuum drive shaft 19 drives the support plate 21 and the cleaning plate 4 to rotate. The rotating cleaning plate 4 will clean the water inlet 5 on the water intake 1. The water inlet 5 is used to divert the external groundwater into the water intake 1. The cleaning plate 4 scrapes and cleans the blocked mud on the water inlet 5, so that the groundwater can smoothly enter the water intake 1.

[0063] Please refer to Figure 2 and Figure 6 As shown, the filtering component 26 includes a scraping plate 17, a filtering funnel 18 and filtering holes 23;

[0064] Among them, the filtering funnel 18 is fixedly arranged in the middle of the inner layer of the water intake 1; the filtering holes 23 are opened on the filtering funnel 18; the scraping plate 17 is fixedly arranged on the vacuum drive shaft 19, and the scraping plate 17 slides on the surface layer of the filtering funnel 18;

[0065] The rotation of the vacuum drive shaft 19 causes the scraping plate 17 to rotate. The rotating scraping plate 17 scrapes the filtering holes 23 on the filtering funnel 18. The scraping plate 17 cleans the sediment impurities on the filtering funnel 18, so that the filtering funnel 18 and the filtering holes 23 are always kept unblocked and can smoothly pass the groundwater.

[0066] Please refer to Figure 2 and Figure 7 As shown, the sewage discharging component 27 includes a spiral drive shaft 16, spiral blades 11 and an upper drive gear 10;

[0067] Among them, the spiral drive shaft 16 is rotatably arranged at the central position of the top of the connecting shaft 20; the upper drive gear 10 is fixedly arranged at the top of the spiral drive shaft 16; the upper drive gear 10 meshes with the bevel gear 14; the spiral blades 11 are fixedly arranged on the spiral drive shaft 16;

[0068] The impurities filtered by the filtering funnel 18 will remain above the filtering funnel 18. Then, the bevel gear 14 drives the upper drive gear 10 to rotate. The rotating upper drive gear 10 will cause the spiral drive shaft 16 and the spiral blades 11 to rotate, and discharge the sediment impurities remaining on the filtering funnel 18 to the outside of the water intake 1 through the driving of the spiral blades 11, so that the surface layer of the filtering funnel 18 is kept clean.

[0069] Please refer to Figure 1 、 Figure 2 、Figure 5 and Figure 8 As shown, two support plates 21 are provided and symmetrically arranged on the vacuum drive shaft 19; a plurality of water inlets 5 are provided and evenly arranged at equal intervals on the water intake device 1;

[0070] By providing two support plates 21 and the cleaning plate 4, the water inlets 5 on the water intake device 1 can be quickly cleaned evenly, enabling the groundwater to smoothly enter the water intake device 1. By providing a plurality of water inlets 5, the groundwater can flow into the water intake device 1 quickly.

[0071] Please refer to Figure 2 and Figure 6 As shown, two scraping plates 17 are provided and symmetrically arranged on the vacuum drive shaft 19; a plurality of filter holes 23 are provided and evenly arranged at equal intervals on the filter funnel 18;

[0072] By providing two scraping plates 17, the scraping plates 17 scrape the filter funnel 18 at a constant speed to clean the filter holes 23 on the filter funnel 18, preventing sediment and impurities from blocking the filter holes 23 and causing the groundwater to be unable to flow to the bottom of the water intake device 1. By providing a plurality of filter holes 23, the groundwater can be filtered better.

[0073] Please refer to Figures 1 through 8 As shown, a geophysical water sampling method for groundwater pollution investigation, the sampling method includes the following steps:

[0074] S1: When it is necessary to take groundwater at a specified location for detection, first place the water intake device 1, the connecting column 3 and the upper cover 7 into the specified hole;

[0075] S2: After the water intake device 1 is sent in, the lower drive gear 12 rotates to drive the rotating shaft 15 and the drill bit 2 to rotate, clean the hole, and enable the water intake device 1 to reach the water intake point smoothly and take water;

[0076] S3: The groundwater will enter the interior of the water intake device 1 through the water inlets 5 on the water intake device 1, and then the cleaning plate 4 is driven to rotate by the rotation of the vacuum drive shaft 19 to prevent the inlet from being blocked by mud. After the groundwater enters the water intake device 1, it will fall onto the filter funnel 18, and the groundwater without sand and gravel is obtained through filtration by the filter funnel 18;

[0077] S4: The groundwater without sand and gravel will fall to the bottom of the water intake device 1, and then the groundwater without sand and gravel is sent out of the water intake device 1 through the water extraction pipe 6. The filtered sand and gravel will be discharged from the water intake device 1 by the rotation of the spiral drive shaft 16 and the spiral blades 11, keeping the upper part of the filter funnel 18 clean.

[0078] Working principle of the present invention: After the drilling machine opens a hole on the ground surface, the water intake device 1 and the upper cover 7 of the connecting column 3 are put into the hole. Generally, the drilling depth of the drilling machine is dozens of meters. If the surrounding soil is relatively wet and loose, when the drilling machine is lifted, the hole may collapse in the hole, covering the groundwater, making the water intake device 1 placed in the hole unable to obtain the groundwater in the hole. Therefore, the driving component on the water intake device 1 drives the drilling component 24 to rotate. The drilling component 24 will drill the collapsed soil layer, enabling the water intake device 1 to reach the area where groundwater flows, so that the water intake device 1 can stably extract groundwater;

[0079] When the water intake device 1 takes water, due to the disturbance of the soil and groundwater, a large amount of mud will appear. Therefore, when the water intake device 1 takes water, the driving component drives the cleaning component 25 to rotate. The rotating cleaning component 25 will clean the water intake part of the water intake device 1, allowing groundwater to smoothly enter the water intake device 1, and preventing the groundwater from being unable to be smoothly obtained due to the mud blocking the water intake part of the water intake device 1;

[0080] After the groundwater enters the water intake device 1, due to the disturbance of the water source, there are relatively many impurities in the groundwater entering the water intake device 1, and there is also a large amount of sediment. Therefore, the driving component drives the filtering component 26 to rotate to filter the groundwater entering the water intake device 1, filtering out the mud and sand impurities in the groundwater. The filtered groundwater will fall to the lower part of the water intake device 1, and then the filtered groundwater is pumped out of the water intake device 1 through the water extraction pipe 6;

[0081] After the groundwater is filtered, a large amount of residual impurities will stay above the filtering component 26. To prevent these residual impurities from accumulating too much and affecting the filtering efficiency, the driving component drives the sewage discharge component 27 to rotate. The rotating sewage discharge component 27 cleans and discharges the mud impurities parked above the filtering component 26 out of the water intake device 1, keeping the area above the filtering component 26 clean and enabling the smooth filtering of sediment impurities in the groundwater.

[0082] The above has described a detailed description of an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. Geophysical water sampling equipment for groundwater pollution investigation, comprising a water sampler (1), a water suction pipe (6), a connecting column (3) and an upper cover (7); characterized in that, It further includes a filtering and water intake unit disposed inside the water intake device (1); The water suction pipe (6) is fixedly disposed on one side of the water intake device (1); The connecting columns (3) are fixedly disposed on the top of the water intake device (1) at equal intervals and evenly; The upper cover (7) is fixedly disposed on the top of the connecting columns (3); The filtering and water intake unit is disposed inside the water intake device (1), and includes a driving assembly, a drilling assembly (24), a cleaning assembly (25), a filtering assembly (26) and a sewage discharging assembly (27); the driving assembly drives the drilling assembly (24) to rotate; the driving assembly drives the cleaning assembly (25) to rotate; the driving assembly drives the filtering assembly (26) to rotate; the driving assembly drives the sewage discharging assembly (27) to rotate; The water intake device (1) and the upper cover (7) are sent to a specified position, and then the driving assembly drives the drilling assembly (24) to rotate to drill the rock and soil, so that the water intake device (1) can be completely placed in the groundwater, and the groundwater enters the water intake device (1). The driving assembly also drives the cleaning assembly (25) to rotate to clean the muddy water, so that the groundwater can enter the water intake device (1). After the groundwater enters the water intake device (1), the driving assembly drives the filtering assembly (26) to rotate. The filtering assembly (26) filters the groundwater, and the filtered groundwater falls to the bottom of the water intake device (1), and then the groundwater is pumped out by the water suction pipe (6). The filtered impurities are discharged from the water intake device (1) by the driving assembly driving the sewage discharging assembly (27), so that groundwater can be continuously obtained subsequently.

2. The geophysical water sampling device for groundwater pollution investigation according to claim 1, characterized in that The driving assembly includes a support column (8), a driving motor (9), a rotating column (13), a bevel gear (14) and a lower driving gear (12); The drilling assembly (24) includes a vacuum driving shaft (19), a support rod (22), a connecting shaft (20), a rotating shaft (15) and a drill bit (2); Wherein, the support column (8) is fixedly disposed on the top of the upper cover (7); the rotating column (13) is rotatably disposed on the support column (8); the driving motor (9) is fixedly disposed on the support column (8); the driving motor (9) is communicated with the rotating column (13); the bevel gear (14) is fixedly disposed on the rotating column (13); the rotating shaft (15) is rotatably disposed at the bottom of the water intake device (1), and the rotating shaft (15) penetrates through the water intake device (1); the connecting shaft (20) is fixedly disposed on the top of the rotating shaft (15); two support rods (22) are provided and symmetrically fixedly disposed on the top of the connecting shaft (20); the vacuum driving shaft (19) is fixedly disposed on the top of the support rod (22); the lower driving gear (12) is fixedly disposed on the top of the vacuum driving shaft (19); the lower driving gear (12) meshes with the bevel gear (14); the drill bit (2) is fixedly disposed on the bottom of the rotating shaft (15).

3. The geophysical water sampling device for groundwater pollution investigation according to claim 2, characterized in that, The cleaning component (25) includes a support plate (21), a cleaning plate (4) and a water inlet (5); Among them, the support plate (21) is fixedly arranged on the vacuum drive shaft (19); the cleaning plate (4) is fixedly arranged at the other end of the support plate (21), and the cleaning plate (4) slides in the gap between the water intake device (1) and the upper cover (7); the water inlet (5) is opened on the water intake device (1).

4. The geophysical water sampling device for groundwater pollution investigation according to claim 3, characterized in that, The filtering component (26) includes a scraper (17), a filtering funnel (18) and filtering holes (23); Among them, the filtering funnel (18) is fixedly arranged in the middle of the inner layer of the water intake device (1); the filtering holes (23) are opened on the filtering funnel (18); the scraper (17) is fixedly arranged on the vacuum drive shaft (19), and the scraper (17) slides on the surface layer of the filtering funnel (18).

5. The geophysical water sampling equipment for groundwater pollution investigation according to claim 4, characterized in that, The sewage discharging component (27) includes a spiral drive shaft (16), spiral blades (11) and an upper drive gear (10); Among them, the spiral drive shaft (16) is rotatably arranged at the central position of the top of the connecting shaft (20); the upper drive gear (10) is fixedly arranged at the top of the spiral drive shaft (16); the upper drive gear (10) meshes with the bevel gear (14); the spiral blades (11) are fixedly arranged on the spiral drive shaft (16).

6. The geophysical water sampling device for groundwater pollution investigation according to claim 5, characterized in that, There are two support plates (21), which are symmetrically arranged on the vacuum drive shaft (19); there are multiple water inlets (5), which are evenly arranged at equal intervals on the water intake device (1).

7. The geophysical water sampling device for groundwater pollution investigation according to claim 6, characterized in that, There are two scrapers (17), which are symmetrically arranged on the vacuum drive shaft (19); there are multiple filtering holes (23), which are evenly arranged at equal intervals on the filtering funnel (18).

8. Geophysical water sampling method for groundwater pollution investigation, using the geophysical water sampling equipment for groundwater pollution investigation described in claim 7, characterized in that: The sampling method includes the following steps: S1: When it is necessary to take groundwater at a specified position for detection, first place the water intake device (1), the connecting column (3) and the upper cover (7) into the specified hole; S2: After the water intake device (1) is sent in, the lower drive gear (12) rotates to drive the rotating shaft (15) and the drill bit (2) to rotate, clean the hole, so that the water intake device (1) can smoothly reach the water intake point and take water; S3: The groundwater will enter the interior of the water intake device (1) through the water inlet (5) on the water intake device (1), and then the cleaning plate (4) will be driven to rotate by the rotation of the vacuum drive shaft (19) to prevent the inlet from being blocked by mud. After the groundwater enters the water intake device (1), it will fall onto the filtering funnel (18) and be filtered by the filtering funnel (18) to obtain groundwater without sand and gravel; S4: The groundwater without sand and gravel will fall to the bottom of the water intake device (1), and then the groundwater without sand and gravel will be sent out of the water intake device (1) through the water extraction pipe (6). The filtered sand and gravel will be discharged from the water intake device (1) by the rotation of the spiral drive shaft (16) and the spiral blades (11), keeping the upper part of the filtering funnel (18) clean.

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