Underground water sample extraction equipment based on hydraulic ring information surveying and mapping

Abstract

The invention relates to the technical field of underground water sampling, and discloses underground water sample extraction equipment based on hydraulic ring information surveying and mapping, which comprises a pump body, a water inlet pipe is arranged at the water inlet end of the pump body, a storage unit is arranged at the water outlet end of the pump body, and a monitoring unit is arranged at one end, far away from the pump body, of the storage unit. The underground water body in the heat preservation tank is firstly subjected to heat exchange with the sample tank, so that the temperature of the sample tank is close to the temperature of the underground water sample before the sample tank stores the underground water sample, meanwhile, the underground water sample can be collected into the sample tank by utilizing the switching unit, and the temperature change of the underground water sample collected into the sample tank is small at the moment; the change of chemical reaction speed and microorganism growth speed in the collected underground water sample is small, the authenticity and representativeness of the detection result of the underground water sample are improved, and the collected sample can be stored for a period of time under the heat preservation effect of the heat preservation tank, so that the transportation and detection of the sample are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of groundwater sampling, and in particular to a groundwater sample extraction device based on hydrogeological, engineering geological and environmental geological information surveying and mapping. Background Art

[0002] As an important part of water resources, the quality and dynamic changes of groundwater are directly related to ecological balance, agricultural irrigation, industrial water use and the safety of domestic water use. Geographical information surveying and mapping services can understand information such as the terrain and soil of farmland, and reasonably plan farmland water conservancy facilities such as irrigation systems and drainage systems. As a comprehensive geological survey technology, hydrogeological, engineering geological and environmental geological information surveying and mapping can comprehensively obtain relevant information of the groundwater system, providing key data support for groundwater research and management; During the process of hydrogeological, engineering geological and environmental geological information surveying and mapping, it is usually necessary to sample the underground water samples and detect and analyze the extracted groundwater samples, so as to determine the content of various chemical components in the water and judge whether it is suitable for irrigation or other uses; When collecting groundwater samples, generally, the water samples below the ground surface are directly extracted into glass containers for storing water samples. Since the temperature change below the ground surface is small, the temperature change above the ground surface is relatively large compared with the temperature change below the ground surface, and there is an obvious temperature difference between below the ground surface and above the ground surface. Therefore, when the sample is taken out of the ground surface, its temperature changes significantly. This change will change the chemical reaction rate and the microbial growth rate, and then lead to changes in the chemical composition of the collected water sample, resulting in distortion of the test results of the collected groundwater sample during detection. Summary of the Invention

[0003] The purpose of the present invention is to provide a groundwater sample extraction device based on hydrogeological, engineering geological and environmental geological information surveying and mapping to solve the problems mentioned in the above process.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A groundwater sample extraction device based on hydrogeological, engineering geological and environmental geological information surveying and mapping, including a pump body. A water inlet pipe is arranged at the water inlet end of the pump body. A first retaining ring and a second retaining ring are arranged on the water inlet pipe. A floating buoy is sleeved outside the water inlet pipe. The floating buoy is located between the first retaining ring and the second retaining ring. When the water inlet pipe is continuously immersed in the water body, by observing the displacement of the floating buoy between the first retaining ring and the second retaining ring, the depth range of the end of the water inlet pipe far from the pump body immersed below the water level surface of the water body can be judged. A storage unit is arranged at the water outlet end of the pump body, and a monitoring unit is arranged at the end of the storage unit far from the pump body; The storage unit includes a heat preservation tank. A hollow layer is provided on the tank wall of the heat preservation tank. Glass wool is arranged in the hollow layer. The glass wool has good heat preservation performance, chemical stability and corrosion resistance. A cover plate is arranged at one end of the heat preservation tank away from the pump body. A sample tank is arranged in the heat preservation tank. A sealing plate is slidably arranged in the sample tank. An exhaust unit is arranged at the upper end of the sample tank. The exhaust unit includes a telescopic corrugated pipe, and the telescopic corrugated pipe can contact the sealing plate and extend into the sample tank; A switching unit is arranged at one end of the storage unit close to the pump body. The switching unit includes a switching block. The switching block is arranged at the water outlet port of the pump body. A switching groove is opened at one end of the switching block away from the pump body. A sample hole is opened in the middle area of the switching groove. Two heat preservation holes are opened in the switching groove. The two heat preservation holes are symmetrically arranged on both sides of the sample hole. Two blocking blocks are slidably arranged in the switching groove. The blocking blocks can block the sample hole and the heat preservation holes. Trigger grooves are opened at one ends of the two blocking blocks close to each other. The two trigger grooves can form an avoidance groove. Limiting grooves are symmetrically opened on the groove wall of the switching groove. Sliders are symmetrically opened on both sides of the blocking blocks. The sliders are slidably arranged in the limiting grooves. The limiting grooves are used to make the two blocking blocks located in the middle area of the switching block when the two blocking blocks are attached to each other, so as to realize the function that the two blocking blocks can block the sample hole when they are attached, and when the blocking block blocks the sample hole, the blocking block does not block the heat preservation holes. When the heat preservation holes are not blocked, the water discharged from the water outlet end of the pump body can enter the heat preservation tank through the heat preservation holes; The switching unit further includes a trigger rod arranged at the bottom of the sample tank. The outer contour of the end of the trigger rod away from the sample tank is adapted to the outer contour of the avoidance groove. A circulation hole is opened inside the trigger rod. A one-way valve is arranged at the bottom of the sample tank. The trigger rod is used to make water enter the sample tank through the circulation hole and the one-way valve.

[0005] As a preferred scheme of the groundwater sample extraction device based on hydrogeological, geophysical and environmental mapping according to the present invention, wherein: Magnet blocks I are embedded at one ends of the two blocking blocks away from each other, and magnet blocks II are embedded at one ends of the two blocking blocks close to each other.

[0006] As a preferred scheme of the groundwater sample extraction device based on hydrogeological, geophysical and environmental mapping according to the present invention, wherein: Magnet blocks III are symmetrically embedded on the switching block. The magnet blocks III and the magnet blocks II repel each other with the same poles, and the two magnet blocks I attract each other with different poles.

[0007] As a preferred scheme of the groundwater sample extraction device based on hydrogeological, geophysical and environmental mapping according to the present invention, wherein: Positioning frames are symmetrically arranged on the sample tank. The positioning frames are attached to the inner wall of the heat preservation tank. Buoyancy plates are symmetrically arranged at both ends of the positioning frames.

[0008] As a preferred solution of the groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to the present invention, wherein: the exhaust unit includes an exhaust plate, the exhaust plate is arranged in the heat preservation tank, a water inlet groove is penetrated and opened in the middle area of the exhaust plate, and the telescopic bellows is arranged at the lower end of the exhaust plate.

[0009] As a preferred solution of the groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to the present invention, wherein: the exhaust plate is arranged at the upper area position of the sample tank, and exhaust holes are arranged in an array on the exhaust plate.

[0010] As a preferred solution of the groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to the present invention, wherein: the cover plate includes a movable block, the monitoring unit includes a monitoring tank, the movable block is arranged in the monitoring tank, and movable grooves are arranged in an array on the movable block.

[0011] As a preferred solution of the groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to the present invention, wherein: multi-section telescopic rods are arranged at the lower end of the movable block, and a connecting block is arranged at the upper end of the movable block.

[0012] As a preferred solution of the groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to the present invention, wherein: connecting rods are symmetrically arranged at one end of the connecting block away from the movable block, and a pull rod is hinged at one end of the connecting rod away from the connecting block.

[0013] As a preferred solution of the groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to the present invention, wherein: two bases are arranged on the cover plate, the bases are symmetrically arranged on both sides of the movable block, the pull rod is clamped and slidably arranged on the bases, magnet blocks four are arranged at one end of the two bases away from each other, a magnet block five is embedded at one end of the pull rod away from the connecting rod, the magnet block four and the magnet block five attract each other with opposite polarities, a base groove is arranged on the base, the pull rod slides in the base groove, ratchet teeth are arranged on both sides of the base groove, limiting columns and clamping strips are symmetrically arranged at one end of the pull rod away from the connecting rod, the clamping strip is rotatably connected with the pull rod, and a torsion spring is arranged at the connection part of the pull rod and the clamping strip.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting the sample tank inside the heat preservation tank, using a pump to extract groundwater into the heat preservation tank, and allowing the groundwater in the heat preservation tank to exchange heat with the sample tank first, the temperature of the sample tank is close to that of the groundwater sample before storing the groundwater sample. At the same time, using a switching unit, when the heat preservation tank is filled with groundwater, the groundwater sample starts to be collected into the sample tank. At this time, the temperature change of the groundwater sample collected into the sample tank is small, thereby making the chemical reaction rate and the microbial growth rate in the collected groundwater sample change little, thus improving the authenticity and representativeness of the groundwater sample detection result. And under the heat preservation effect of the heat preservation tank, the collected sample can be stored for a period of time, which is beneficial to the transportation and detection of the sample; 2. By setting the telescopic bellows and pushing the sealing plate, the air in the sample tank is discharged, further improving the heat exchange efficiency between the groundwater in the heat preservation tank and the sample tank, reducing the temperature difference between the sample tank and the groundwater sample, improving the representativeness of the collected groundwater sample. At the same time, the discharge of the gas in the sample tank avoids the mixing of the groundwater sample and the internal gas of the sample tank, thus avoiding the contamination of the collected groundwater sample, and further improving the authenticity and representativeness of the collected groundwater sample; 3. When the water sample starts to enter the sample tank, at this time the sealing plate will gradually move away from the water pump, causing the volume of the water body in the heat preservation tank to increase. The water body in the heat preservation tank enters the monitoring tank through the movable groove. At this time, the liquid level in the monitoring tank starts to rise. By observing the change of the liquid level in the monitoring tank, when the liquid level in the monitoring tank no longer rises, it is judged that the sample tank has completed the collection of the groundwater sample. At the same time, a scale is set on the monitoring tank. By observing the scale, the amount of the collected water sample in the sample tank can be directly observed, avoiding too little water sample and lack of representativeness of the sample, further improving the detection accuracy of the water sample, and further avoiding the secondary sampling of the groundwater sample due to insufficient amount of the water sample used. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the overall groundwater sample extraction device based on hydrogeological, engineering geological and environmental geological information mapping of the present invention.

[0016] Figure 2 It is a schematic structural diagram of the inside of the heat preservation tank of the groundwater sample extraction device based on hydrogeological, engineering geological and environmental geological information mapping of the present invention.

[0017] Figure 3 It is a schematic top view structural diagram of the sample tank of the groundwater sample extraction device based on hydrogeological, engineering geological and environmental geological information mapping of the present invention.

[0018] Figure 4 It is a schematic bottom view structural diagram of the sample tank of the groundwater sample extraction device based on hydrogeological, engineering geological and environmental geological information mapping of the present invention.

[0019] Figure 5 This is a schematic structural diagram of the exhaust unit of the groundwater sample extraction device based on hydrogeological, geophysical and environmental geological survey information of the present invention.

[0020] Figure 6 This is a schematic structural diagram of the switching unit of the groundwater sample extraction device based on hydrogeological, geophysical and environmental geological survey information of the present invention.

[0021] Figure 7 This is a schematic structural diagram of magnet block one and magnet block two of the groundwater sample extraction device based on hydrogeological, geophysical and environmental geological survey information of the present invention.

[0022] Figure 8 This is a schematic structural diagram of the interior of the monitoring tank of the groundwater sample extraction device based on hydrogeological, geophysical and environmental geological survey information of the present invention.

[0023] Figure 9 This is a schematic structural diagram of the movable block of the groundwater sample extraction device based on hydrogeological, geophysical and environmental geological survey information of the present invention.

[0024] Figure 10 This is a schematic structural diagram of the connecting rod and the pull rod of the groundwater sample extraction device based on hydrogeological, geophysical and environmental geological survey information of the present invention.

[0025] In the figure: 1. Pump body; 11. Water inlet pipe; 2. Storage unit; 21. Heat preservation tank; 22. Cover plate; 23. Sample tank; 231. Sealing plate; 24. Positioning frame; 25. Buoyancy plate; 3. Monitoring unit; 31. Monitoring tank; 32. Movable block; 33. Movable groove; 34. Multi-section telescopic rod; 35. Connecting block; 36. Connecting rod; 37. Pull rod; 38. Base; 381. Magnet block five; 39. Magnet block four; 4. Switching unit; 41. Switching block; 411. Magnet block three; 42. Switching groove; 43. Sample hole; 44. Heat preservation hole; 45. Stopper; 451. Trigger groove; 452. Magnet block one; 453. Magnet block two; 46. Trigger rod; 461. Flow hole; 5. Exhaust unit; 51. Telescopic bellows; 52. Exhaust plate; 53. Water inlet groove; 54. Exhaust hole. Specific embodiments

[0026] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only provided to provide a better understanding of the present invention by showing examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but covers any modification, replacement, and improvement of elements, components, and algorithms without departing from the spirit of the present invention. In the drawings and the following description, well-known structures and technologies are not shown so as to avoid unnecessarily obscuring the present invention.

[0027] Embodiment 1 Referring to Figure 1-7 , for the first embodiment of the present invention, a groundwater sample extraction device based on hydrogeological, geophysical, and environmental geological information surveying and mapping is provided. This groundwater sample extraction device based on hydrogeological, geophysical, and environmental geological information surveying and mapping includes a pump body 1. A water inlet pipe 11 is provided at the water inlet end of the pump body 1. A first retaining ring and a second retaining ring are provided on the water inlet pipe 11. A floating buoy is sleeved outside the water inlet pipe 11, and the floating buoy is located between the first retaining ring and the second retaining ring. When the water inlet pipe 11 is continuously immersed in the water body, by observing the displacement of the floating buoy between the first retaining ring and the second retaining ring, the depth range of the end of the water inlet pipe 11 away from the pump body 1 immersed below the water level surface of the water body can be judged. A storage unit 2 is provided at the water outlet end of the pump body 1, and a monitoring unit 3 is provided at the end of the storage unit 2 away from the pump body 1. The storage unit 2 includes a heat preservation tank 21. A hollow layer is provided on the tank wall of the heat preservation tank 21, and glass wool is provided in the hollow layer. The glass wool has good heat preservation performance, chemical stability, and corrosion resistance. A cover plate 22 is provided at the end of the heat preservation tank 21 away from the pump body 1. An opening is provided at the end of the heat preservation tank 21 away from the pump body 1. The cover plate 22 is threadedly connected to the heat preservation tank 21, and the cover plate 22 can seal the opening end of the heat preservation tank 21. An exhaust valve 1 is provided on the cover plate 22. A sample tank 23 is provided in the heat preservation tank 21. A sealing plate 231 is slidably provided in the sample tank 23. A sealing rubber strip is provided at the edge of the sealing plate 231. An exhaust valve 2 is provided on the sealing plate 231. An exhaust unit 5 is provided at the upper end of the sample tank 23. The exhaust unit 5 includes a telescopic bellows 51. The telescopic bellows 51 is a tubular structure with elasticity. The telescopic principle of the telescopic bellows 51 is based on its corrugated structure. When subjected to axial tension or pressure, the corrugations will deform, thereby realizing the elongation or shortening of the pipe body. The telescopic bellows 51 can contact the sealing plate 231 and extend into the sample tank 23. One end of the storage unit 2 close to the pump body 1 is provided with a switching unit 4. The switching unit 4 includes a switching block 41. The switching block 41 is arranged at the water outlet port of the pump body 1. The switching block 41 penetrates through the heat preservation tank 21. One end of the switching block 41 away from the pump body 1 is provided with a switching groove 42. A sample hole 43 is arranged in the middle area of the switching groove 42. Two heat preservation holes 44 are arranged in the switching groove 42. The two heat preservation holes 44 are symmetrically arranged on both sides of the sample hole 43. Two blocking blocks 45 are slidably arranged in the switching groove 42. The blocking blocks 45 can block the sample hole 43 and the heat preservation holes 44. Trigger grooves 451 are arranged at one ends of the two blocking blocks 45 close to each other. The two trigger grooves 451 can form an avoidance groove. Limiting grooves are symmetrically arranged on the groove wall of the switching groove 42. Sliders are symmetrically arranged on both sides of the blocking blocks 45. The sliders are slidably arranged in the limiting grooves. The limiting grooves are used to make the two blocking blocks 45 located in the middle area of the switching block 41 when the two blocking blocks 45 are attached to each other, so as to realize the function that the two blocking blocks 45 can block the sample hole 43 when they are attached. And when the blocking block 45 blocks the sample hole 43, the blocking block 45 will not block the heat preservation holes 44. When the heat preservation holes 44 are not blocked, the water discharged from the water outlet end of the pump body 1 can enter the heat preservation tank 21 through the heat preservation holes 44; The switching unit 4 further includes a trigger rod 46 arranged at the bottom of the sample tank 23. The outer contour of one end of the trigger rod 46 away from the sample tank 23 is mutually adapted to the outer contour of the avoidance groove. A circulation hole 461 is arranged inside the trigger rod 46. A one-way valve is arranged at the bottom of the sample tank 23. The trigger rod 46 is used to make water enter the sample tank 23 through the circulation hole 461 and the one-way valve.

[0028] Magnet blocks one 452 are embedded at one ends of the two blocking blocks 45 away from each other. Magnet blocks two 453 are embedded at one ends of the two blocking blocks 45 close to each other.

[0029] Magnet blocks three 411 are symmetrically embedded on the switching block 41. The magnet blocks three 411 and the magnet blocks two 453 repel each other with the same poles. The two magnet blocks one 452 attract each other with different poles.

[0030] Positioning frames 24 are symmetrically arranged on the sample tank 23. The positioning frames 24 are attached to the inner wall of the heat preservation tank 21. Buoyancy plates 25 are symmetrically arranged at both ends of the positioning frames 24. The positioning frames 24 can support and position the sample tank 23. The buoyancy plates 25 are preferably made of EVA plastic.

[0031] During the use process, first gradually immerse one end of the water inlet pipe 11 away from the pump body 1 in the underground water body. By observing the displacement of the float along the water inlet pipe 11, when the float is displaced to an appropriate position of the water inlet pipe 11, then start the pump body 1. At this time, the underground water will, under the action of the pump body 1, enter the pump body 1 from the water inlet end of the pump body 1 through the water inlet pipe 11, and then the underground water will be discharged from the water outlet end of the pump body 1; At this time, the two stoppers 45 are attracted to each other under the magnetic attraction of the first magnet block 452, causing the sample hole 43 to be blocked by the two stoppers 45. At this time, the heat preservation hole 44 is in an open state, and the groundwater discharged from the pump body 1 passes through the heat preservation hole 44 and through the switching block 41; At this time, the groundwater enters the heat preservation tank 21. As the groundwater continuously enters the heat preservation tank 21, the liquid level in the heat preservation tank 21 gradually rises. When the liquid level in the heat preservation tank 21 rises to submerge the exhaust unit 5, at this time, the groundwater will enter the telescopic bellows 51 under the action of gravity. During the process of the groundwater continuously entering the heat preservation tank 21, the gas in the heat preservation tank 21 is discharged through the first exhaust valve; After the gas in the heat preservation tank 21 is discharged, at this time, the groundwater continues to enter the heat preservation tank 21, increasing the water pressure in the heat preservation tank 21. Then, the telescopic bellows 51 gradually extends from the initial contracted state under the action of the water pressure. Then, the telescopic bellows 51 will gradually extend into the sample tank 23, and then the telescopic bellows 51 will contact the sealing plate 231, and the telescopic bellows 51 will push the sealing plate 231. At this time, the gas in the sample tank 23 will be discharged through the second exhaust valve. When the sealing plate 231 is displaced to the extreme position, at this time, the telescopic bellows 51 will push the sample tank 23, and at this time, the sample tank 23 is subjected to a pushing force towards the direction of the pump body 1; At this time, the trigger rod 46 will contact the stopper 45, and the trigger rod 46 will cause the two stoppers 45 to gradually separate under the action of the trigger groove 451. At this time, the two stoppers 45 will no longer block the sample hole 43, and the two stoppers 45 will block the heat preservation hole 44. Then, the groundwater pumped by the pump body 1 at this time will enter the sample tank 23 through the through hole 461 and the one-way valve.

[0032] Embodiment 2 Referring to Figure 1-8 , this is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: The exhaust unit 5 includes an exhaust plate 52. The exhaust plate 52 is arranged in the heat preservation tank 21. A water inlet groove 53 is formed through the middle area of the exhaust plate 52. The telescopic bellows 51 is arranged at the lower end of the exhaust plate 52, and the telescopic bellows 51 is arranged at the notch of the water inlet groove 53.

[0033] The exhaust plate 52 is arranged in the upper area position of the sample tank 23, and the surface of the exhaust plate 52 close to the sample tank 23 is set as a convex arc surface structure. The exhaust holes 54 are arranged in an array on the exhaust plate 52.

[0034] During use, when the telescopic bellows 51 pushes against the sealing plate 231, the gas in the sample tank 23 will be discharged into the heat preservation tank 21 through the second exhaust valve. Since the heat preservation tank 21 is filled with groundwater at this time, the gas will gradually rise in the form of bubbles. During the rising process, the bubbles will finally be discharged through the exhaust hole 54 under the action of the convex curved surface structure on the exhaust plate 52; The gas passing through the exhaust plate 52 from the exhaust hole 54 will finally be discharged through the first exhaust valve under the action of the water pressure.

[0035] The rest of the structure is the same as that of Embodiment 1.

[0036] Embodiment 3 Refer to Figure 1-10 , which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: The cover plate 22 includes a movable block 32. The first exhaust valve is arranged on the movable block 32. The movable block 32 is slidably connected to the cover plate 22. The monitoring unit 3 includes a monitoring tank 31. The movable block 32 is arranged in the monitoring tank 31. A plurality of movable grooves 33 are arranged in an array on the movable block 32. A third exhaust valve is arranged on the monitoring tank 31. The monitoring tank 31 is arranged on the side of the cover plate 22 away from the heat preservation tank 21. The monitoring tank 31 is preferably made of acrylic material, and scale lines are arranged on the wall of the monitoring tank 31 for observing the change of the liquid level surface.

[0037] A multi-section telescopic rod 34 is arranged at the lower end of the movable block 32. The end of the multi-section telescopic rod 34 away from the movable block 32 is connected to the telescopic end of the telescopic bellows 51. A connecting block 35 is arranged at the upper end of the movable block 32.

[0038] Link rods 36 are symmetrically arranged at the end of the connecting block 35 away from the movable block 32. The link rods 36 are hinged to the connecting block 35. A pull rod 37 is hinged at the end of the link rod 36 away from the connecting block 35.

[0039] Two bases 38 are arranged on the cover plate 22. The bases 38 are symmetrically arranged on both sides of the movable block 32. The pull rod 37 is slidably arranged in the base 38 in a clamping manner. Magnet blocks four 39 are arranged at the ends of the two bases 38 away from each other. A magnet block five 381 is embedded at the end of the pull rod 37 away from the link rod 36. The magnet block four 39 and the magnet block five 381 attract each other with opposite polarities. A base groove is arranged on the base 38. The pull rod 37 slides in the base groove. Ratchet teeth are arranged on both sides of the base groove. Limit posts and clamping strips are symmetrically arranged at the end of the pull rod 37 away from the link rod 36. The clamping strip is rotatably connected to the pull rod 37, and a torsion spring is arranged at the connection between the pull rod 37 and the clamping strip.

[0040] During use, initially, the active slot 33 on the active block 32 is not in communication with the interior of the heat preservation tank 21. During the process of the telescopic bellows 51 pushing against the sealing plate 231, the multi-section telescopic rod 34 gradually extends from the contracted state. When the sealing plate 231 is pushed to the extreme limit position, at this time, the multi-section telescopic rod 34 also extends to the extreme length, and through the multi-section telescopic rod 34, the telescopic bellows 51 will pull the active block 32, causing the active block 32 to slide. At this time, the active slot 33 is in communication with the interior of the heat preservation tank 21; During the displacement of the active block 32, at this time, the magnet block five 381 on the pull rod 37 will be separated from the magnet block four 39 on the base 38, and then the latch will be stuck on the ratchet under the action of the torsion spring; When groundwater enters the sample tank 23, at this time, the water pressure in the sample tank 23 will push against the sealing plate 231 and the telescopic bellows 51. At this time, due to the limiting post limiting the latch, the pull rod 37 cannot be reset, and then the multi-section telescopic rod 34 resets; Since the volume in the heat preservation tank 21 is fixed, when groundwater continuously enters the sample tank 23, at this time, the water in the heat preservation tank 21 will enter the monitoring tank 31 through the active slot 33. When collecting groundwater into the sample tank 23, when observing that the water level surface in the monitoring tank 31 no longer changes, the pump body 1 can be closed. At this time, enough groundwater samples have been collected in the sample tank 23. During the process of closing the pump body 1, the groundwater samples are still entering the sample tank 23, resulting in a relatively large water pressure in the sample tank 23, so that the water samples in the sample tank 23 are stored in the sample tank 23 under the action of the sealing plate 231.

[0041] The remaining structure is the same as that of Embodiment 2.

[0042] The different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art should be able to understand and implement other variations of the disclosed embodiments based on the study of the drawings, the description, and the claims. In the claims, the term "comprising" does not exclude other devices or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to label names rather than to represent any specific order. Any reference signs in the claims should not be construed as limiting the scope of protection. The functions of multiple parts in the claims can be implemented by a single hardware or software module. The fact that certain technical features appear in different dependent claims does not mean that these technical features cannot be combined to achieve beneficial effects.

Claims

1. A groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping, comprising a pump body (1), characterized in that, The water inlet end of the pump body (1) is provided with a water inlet pipe (11), the water outlet end of the pump body (1) is provided with a storage unit (2), and a monitoring unit (3) is provided at one end of the storage unit (2) away from the pump body (1); The storage unit (2) includes a heat preservation tank (21), a cover plate (22) is provided at one end of the heat preservation tank (21) away from the pump body (1), a sample tank (23) is arranged inside the heat preservation tank (21), a sealing plate (231) is slidably arranged inside the sample tank (23), an exhaust unit (5) is arranged at the upper end of the sample tank (23), and the exhaust unit (5) includes a telescopic corrugated pipe (51), and the telescopic corrugated pipe (51) can contact the sealing plate (231) and extend into the sample tank (23); A switching unit (4) is arranged at one end of the storage unit (2) close to the pump body (1), the switching unit (4) includes a switching block (41), the switching block (41) is arranged at the water outlet port of the pump body (1), a switching groove (42) is opened at one end of the switching block (41) away from the pump body (1), a sample hole (43) is opened in the middle area of the switching groove (42), two heat preservation holes (44) are opened in the switching groove (42), the two heat preservation holes (44) are symmetrically arranged on both sides of the sample hole (43), two stoppers (45) are slidably arranged in the switching groove (42), and the stoppers (45) can block the sample hole (43) and the heat preservation holes (44), and trigger grooves (451) are opened at one ends of the two stoppers (45) close to each other, and the two trigger grooves (451) can form an avoidance groove; The switching unit (4) further includes a trigger rod (46) arranged at the bottom of the sample tank (23), the outer contour of the end of the trigger rod (46) away from the sample tank (23) is adapted to the outer contour of the avoidance groove, a flow hole (461) is opened inside the trigger rod (46), a one-way valve is arranged at the bottom of the sample tank (23), and the trigger rod (46) is used to allow water to enter the sample tank (23) through the flow hole (461) and the one-way valve.

2. The groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to claim 1, characterized in that: Magnet blocks one (452) are embedded at one ends of the two stoppers (45) away from each other, and magnet blocks two (453) are embedded at one ends of the two stoppers (45) close to each other.

3. The groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to claim 2, wherein: Magnet blocks three (411) are symmetrically embedded on the switching block (41), the magnet blocks three (411) repel the magnet blocks two (453) with the same pole, and the two magnet blocks one (452) attract each other with different poles.

4. The groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to claim 1, characterized in that: Positioning frames (24) are symmetrically arranged on the sample tank (23), the positioning frames (24) are attached to the inner wall of the heat preservation tank (21), and buoyancy plates (25) are symmetrically arranged at both ends of the positioning frames (24).

5. The groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to claim 1, characterized in that: The exhaust unit (5) includes an exhaust plate (52), the exhaust plate (52) is arranged inside the heat preservation tank (21), a water inlet groove (53) is penetrated in the middle area of the exhaust plate (52), and the telescopic corrugated pipe (51) is arranged at the lower end of the exhaust plate (52).

6. The groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to claim 5, characterized in that: The exhaust plate (52) is arranged at the upper region position of the sample tank (23), and exhaust holes (54) are arrayed on the exhaust plate (52).

7. A groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to claim 1, characterized in that: The cover plate (22) includes a movable block (32), the monitoring unit (3) includes a monitoring tank (31), the movable block (32) is arranged in the monitoring tank (31), and movable grooves (33) are arrayed on the movable block (32).

8. A groundwater sample extraction device based on hydrogeological, geophysical and environmental mapping according to claim 7, characterized in that: A multi-joint telescopic rod (34) is arranged at the lower end of the movable block (32), and a connecting block (35) is arranged at the upper end of the movable block (32).

9. The groundwater sample extraction device based on hydrogeological, geophysical and environmental geological information surveying and mapping according to claim 8, characterized in that: Link rods (36) are symmetrically arranged at one end of the connecting block (35) away from the movable block (32), and a pull rod (37) is hinged at one end of the link rod (36) away from the connecting block (35).

10. The groundwater sample extraction device based on hydrogeological, geophysical and environmental information surveying and mapping according to claim 9, characterized in that: Two bases (38) are arranged on the cover plate (22), the pull rod (37) is snap-fitted and slidably arranged on the bases (38), magnet blocks four (39) are arranged at one ends of the two bases (38) away from each other, and a magnet block five (381) is embedded at one end of the pull rod (37) away from the link rod (36).

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