Underground water organic pollutant sample collection device

Abstract

The invention provides an underground water organic pollutant sample collection device, and belongs to the technical field of sample sampling. Comprising an air bag pump and further comprises a collecting mechanism, the collecting mechanism comprises an adjusting seat installed at a water outlet of the air bag pump, a plurality of corrugated bottles are installed at the top of the adjusting seat, and an adjusting piece is arranged in the adjusting seat; when water samples at different depths are collected, water is supplied to different corrugated bottles through the adjusting piece. By arranging the adjusting seat, the adjusting piece and the corrugated bottle, when water samples of different depths of the same underground water well are collected, the water samples of different depths are collected in the corrugated bottle through the adjusting piece, a flow channel through which the water samples pass is shorter, and during secondary sampling, pollutants of last sampling are reduced from entering the corrugated bottle for secondary sampling, so that the sampling efficiency is improved. Therefore, the accuracy of detection results is improved.

Description

Technical Field

[0001] This invention relates to the field of sample collection technology, and in particular to a groundwater organic pollutant sample collection device. Background Technology

[0002] Groundwater primarily originates from atmospheric precipitation and surface water infiltration. After precipitation reaches the ground, some forms surface runoff, while the rest seeps into the ground through soil pores and rock fissures, accumulating in aquifers at certain depths. To prevent groundwater contamination, water samples must be collected regularly, stored in collection bottles, and sent to a laboratory for testing. Before collection, a groundwater well is typically dug. During collection, a submersible pump is placed in the well to extract water and perform well flushing. Well flushing effectively removes impurities, dirt, and stagnant water accumulated on the well walls and bottom, preventing contamination or interference with the collected groundwater samples. This ensures that the collected water samples accurately reflect the original groundwater quality, facilitating precise water quality analysis. To provide reliable samples for monitoring, after well washing, an airbag pump is inserted into the groundwater well. The outlet of the airbag pump is connected to a water pipe, and the vent is connected to an air pipe. When air is introduced or released through the vent, the airbag of the airbag pump will contract or expand. When the airbag contracts, the one-way valve at the inlet at the bottom of the airbag closes, and the one-way valve at the outlet at the top of the airbag opens, allowing groundwater to flow upward from inside the airbag. When the airbag expands, the one-way valve at the inlet at the bottom of the airbag opens, and the one-way valve at the outlet at the top of the airbag closes, allowing groundwater to enter the airbag from the bottom of the airbag pump, thereby achieving water sampling. The water sample is discharged from the outlet and transported to the surface through a water pipe. When sampling a single groundwater well, water samples need to be collected from different depths to improve the accuracy of the detection.

[0003] When collecting water samples from different depths in the same groundwater well, an airbag pump needs to be lowered into the well, and water samples from each depth are transported to the surface via water pipes. However, during the sampling process, organic pollutants in the samples easily adhere to the inner wall of the water pipe. When the sampling depth is changed and the new water sample flows upward along the water pipe again, the organic pollutants previously attached to the inner wall of the water pipe will enter the collection bottle along with the water flow, thus causing the collected lower layer water sample to be contaminated by the upper layer water sample, affecting the accuracy of the test results. Therefore, this application provides a groundwater organic pollutant sample collection device to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a groundwater organic pollutant sample collection device to address the issue of the need to improve the accuracy of detection results.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A groundwater organic pollutant sample collection device includes an airbag pump and further includes: The collection mechanism includes an adjustment seat installed at the outlet of the airbag pump, a number of corrugated bottles are installed on the top of the adjustment seat, and an adjustment component is provided inside the adjustment seat; When collecting water samples at different depths, water is supplied to different corrugated bottles through adjusting components.

[0006] Preferably, the adjusting seat includes a circular seat, a lower sealing plate detachably connected to the bottom of the circular seat, a water inlet provided at the bottom of the lower sealing plate, the water inlet of the lower sealing plate being connected to the water outlet of the airbag pump, an upper sealing plate detachably connected to the top of the circular seat, grooves being provided on the sides of the lower sealing plate, the circular seat, and the upper sealing plate, a central hole and several insertion holes being provided on the top of the circular seat, the several insertion holes being arranged in a circumferential array, several sockets being fixed on the top of the lower sealing plate, the sockets being located inside the insertion holes, a through hole being provided on the inner wall of the central hole, a water channel being provided on the side of the socket, the through hole being connected to the water channel being provided, and several circular holes being provided on the top of the upper sealing plate, the circular holes being connected to the insertion holes.

[0007] Preferably, the adjusting component includes a servo motor fixed to the bottom of the upper sealing plate. The servo motor is located in the central hole, and a piston is fixed to the output end of the servo motor. The piston is rotatably connected to the central hole, and a second water channel is opened at the bottom of the piston. When collecting water samples at different depths, the servo motor drives the piston to rotate, and the second water channel is connected to different first water channels, so that the water enters different corrugated bottles.

[0008] Preferably, the side of the circular seat is provided with a drainage hole, which is connected to the central hole. When collecting water samples at different depths, the servo motor drives the piston to rotate, and the water channel is connected to different drainage holes.

[0009] Preferably, the corrugated bottle includes a rigid connecting part, which passes through a round hole and is threaded to the top of the socket. The water channel is connected to the rigid connecting part, and a corrugated part is fixed to the top of the rigid connecting part.

[0010] Preferably, the side of the circular base is provided with a protective component, which includes several vertical plates rotatably connected to the side of the circular base. When collecting water samples, the vertical plates are attached to the surface of the corrugated part.

[0011] Preferably, the vertical plate has an arc-shaped groove on the side near the center of the upper sealing plate. A mounting base is fixed to the inner wall of the arc-shaped groove. The top of the mounting base is flush with the top of the vertical plate. A receiving groove is formed at the bottom of the mounting base. A pressure sensor is fixed to the inner wall of the receiving groove. A protective film is fixed to the bottom of the mounting base. The protective film is attached to the surface of the pressure sensor. After the water sample enters the corrugated part, the corrugated part expands upward until the top of the corrugated part is attached to the bottom of the pressure sensor.

[0012] Preferably, the vertical plate has a protrusion fixed on the side away from the center of the upper sealing plate, and a vertical groove is opened on the top of the protrusion. A roller is rotatably connected to the inner wall of the vertical groove. When collecting water samples, the roller is attached to the inner wall of the underground water pipe.

[0013] Preferably, the top of the protrusion is provided with an inclined surface, and the bottom of the protrusion is provided with a curved surface.

[0014] Preferably, a guide head is fixed to the top of the vertical plate, and a mounting base is fixed to the bottom of the guide head. The top of the guide head is provided with a guide surface. When collecting water samples, several guide heads fit together to form a hollow frustum structure.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting up an adjusting seat, adjusting components, and corrugated bottles, when collecting water samples from different depths of the same groundwater well, the adjusting components collect water samples from different depths into the corrugated bottles, resulting in a shorter flow path for the water samples. During secondary sampling, this reduces the amount of contaminants from the previous sampling entering the corrugated bottles used for secondary sampling, thereby improving the accuracy of the test results.

[0016] By setting up a drainage hole, when collecting water samples from different depths of the same groundwater well, after the first sampling is completed, the flow channel two can be rotated to the drainage hole position via the adjusting component. This allows the residual water sample from the first sampling to be expelled from the airbag pump. During the second sampling, the water sample from the second sampling will flow out from the drainage hole first. In this process, the water sample can carry out the contaminants remaining in the flow channel two. Then, the flow channel two is rotated to the flow channel one position corresponding to the next corrugated bottle to start water sample collection. This further avoids contaminants from being mixed into the corrugated bottle for the second sampling, thereby further improving the accuracy of the test results.

[0017] By incorporating a rigid connector and a corrugated section, the rigid connector is installed on the top of the socket via a threaded connection. In the initial state, the corrugated section is compressed, which effectively reduces the amount of residual air inside the corrugated bottle. When water is poured into the corrugated bottle, the corrugated section gradually expands as water flows in, allowing the corrugated bottle to store more water samples.

[0018] By setting up a vertical plate that fits against the outer surface of the corrugated bottle, it can effectively prevent the corrugated bottle from being accidentally impacted during water sample collection, providing all-round protection for the corrugated bottle.

[0019] By incorporating a pressure sensor and a protective membrane, when the corrugated bottle collides upwards, the top of the bottle will contact the pressure sensor, at which point the water supply to the inside of the bottle will stop, preventing the bottle from expanding and being damaged.

[0020] By incorporating protrusions, rollers, curved surfaces, and slopes, the rollers maintain close contact with the inner wall of the groundwater well during sampling. This design significantly reduces friction between the protrusions and the well's inner wall, while also providing support for the vertical plate, ensuring it remains firmly attached to the corrugated bottle surface and continuously protecting it. Furthermore, the support provided by multiple rollers within the well's inner wall allows the airbag pump to be precisely positioned in the center of the well, preventing contact between the pump's inlet and the well's inner wall. This effectively prevents interference with the water sample due to impurities on the well wall, further improving the accuracy of the test results.

[0021] By setting a guide head and a guide surface, when the airbag pump is pulled upward, the guide surface can guide the water flow, reduce the resistance of the water flow to the airbag pump, and make it easier to pull the airbag pump upward. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the collection mechanism of the present invention; Figure 3 This is a three-dimensional structural diagram of the lower sealing plate of the present invention; Figure 4 This is a cross-sectional perspective view of the three-dimensional structure of the circular base of the present invention; Figure 5 This is a three-dimensional structural diagram of the vertical plate of the present invention; Figure 6 This is a three-dimensional structural diagram of a waterway of the present invention; Figure 7 This is a three-dimensional structural diagram of the socket of the present invention; Figure 8 This is a three-dimensional structural diagram of the upper sealing plate of the present invention; Figure 9 This is a three-dimensional structural diagram of the central hole of the present invention; Figure 10 This is a three-dimensional structural diagram of the drainage hole of the present invention; Figure 11 This is a three-dimensional structural diagram of the airbag pump of the present invention.

[0024] In the diagram: 1. Airbag pump; 2. Collection mechanism; 3. Adjustment seat; 4. Lower sealing plate; 5. Upper sealing plate; 6. Round seat; 7. Insertion hole; 8. Through hole; 9. Drain hole; 10. Socket; 11. Waterway 1; 12. Adjustment component; 13. Servo motor; 14. Piston; 15. Waterway 2; 16. Corrugated bottle; 17. Rigid connection part; 18. Corrugated part; 19. Protective component; 20. Vertical plate; 21. Mounting seat; 22. Pressure sensor; 23. Protective membrane; 24. Protrusion; 25. Roller; 26. Curved surface; 27. Inclined surface; 28. Guide head; 29. ​​Guide surface; 30. Round hole; 31. Arc groove; 32. Center hole.

[0025] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0026] The present invention provides a groundwater organic pollutant sample collection device with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0027] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0028] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0029] like Figures 1-11As shown, an embodiment of the present invention provides a groundwater organic pollutant sample collection device, including an airbag pump 1. The airbag pump 1 has a drain outlet and a vent at its top. An airbag is installed inside the airbag pump 1. When the airbag pump 1 pumps water, it draws air from the outside of the airbag upwards, reducing the pressure outside the airbag, causing the airbag to expand and absorb water. The one-way valve at the outlet of the airbag pump 1 closes, while the one-way valve at the inlet at the bottom of the airbag pump 1 opens, allowing water samples to enter the airbag. When the airbag pump 1 drains water, it increases the pressure outside the airbag, causing the airbag to contract and drain. The one-way valve at the outlet at the bottom of the airbag pump 1 closes, while the one-way valve at the drain outlet at the top of the airbag pump 1 opens. The airbag pump 1 is controlled by an external controller. The device also includes: The collection mechanism 2 includes an adjustment seat 3 installed at the outlet of the airbag pump 1. Several corrugated bottles 16 are installed on the top of the adjustment seat 3, and an adjustment component 12 is provided inside the adjustment seat 3. When collecting water samples at different depths, water is supplied to different corrugated bottles 16 through the adjusting component 12.

[0030] like Figures 2-4As shown, in this embodiment, the adjusting seat 3 includes a circular seat 6. A lower sealing plate 4 is detachably connected to the bottom of the circular seat 6. The circular seat 6 and the lower sealing plate 4 are fixedly connected by screws. A water inlet is provided at the bottom of the lower sealing plate 4, and a nut is provided at the water inlet for fixing to the water outlet of the airbag pump 1. The water inlet of the lower sealing plate 4 is connected to the water outlet of the airbag pump 1. An upper sealing plate 5 is detachably connected to the top of the circular seat 6. A hook is fixed to the top of the upper sealing plate 5 for connecting a pull rope. The upper sealing plate 5 and the circular seat 6 are fixedly connected by screws. The lower sealing plate 4, the circular seat 6, and the upper sealing plate 5 are all connected together. The sides of plate 5 are provided with grooves. The top of the circular base 6 has a central hole 32 and several insertion holes 7. The interior of the circular base 6 is hollow to reduce the overall weight. The insertion holes 7 are arranged in a circular array. The top of the lower sealing plate 4 is fixed with several sockets 10, which are located inside the insertion holes 7. The inner wall of the central hole 32 has a through hole 8. The side of the socket 10 has a water channel 11, which is connected to the through hole 8. The top of the upper sealing plate 5 has several circular holes 30, which are connected to the insertion holes 7. The circular base 6 serves as an adjustment seat 3. The main structure serves to support and accommodate other components. The lower sealing plate 4 is detachably connected to the bottom of the circular seat 6, and its inlet is connected to the outlet of the airbag pump 1, ensuring that the water sample can flow smoothly from the airbag pump 1 into the regulating seat 3. The detachable design facilitates installation and maintenance. The upper sealing plate 5 is detachably connected to the top of the circular seat 6, forming a closed space together with the lower sealing plate 4 and the circular seat 6 to protect the internal water channel structure. The side groove is used to accommodate the air pipe, making the overall wiring of the device neat and avoiding the wiring from getting tangled or damaged in the complex environment downhole. The central hole 32 is used to install the regulating component 1. The servo motor 13 and other components in section 2 provide space for the operation of the adjustment component 12. Several circumferentially arrayed sockets 7 are used for precise positioning and installation of the socket 10. The socket 10 is fixed on the top of the lower sealing plate 4 and located inside the socket 7. The water channel 11 on its side is connected to the through hole 8 on the inner wall of the central hole 32. It is the key channel for water sample to flow from the center of the adjustment seat 3 to the corrugated bottle 16. The round hole 30 on the top of the upper sealing plate 5 is connected to the socket 7, providing an installation position for the rigid connection part 17 of the corrugated bottle 16, ensuring that the water sample can flow smoothly from the water channel 11 into the corrugated bottle 16.

[0031] like Figure 4 and Figure 6As shown, in this embodiment, the adjusting component 12 includes a servo motor 13 fixed to the bottom of the upper sealing plate 5. The servo motor 13 is mounted on the bottom of the upper sealing plate 5 via a bracket, which is fixed to the bottom of the upper sealing plate 5 with screws. A wire hole is provided at the top of the upper sealing plate 5 for the wire of the servo motor 13 to pass through, and a sealing ring is provided at the passage. The servo motor 13 is located in the central hole 32. The servo motor 13 is connected to an external controller via a wire. The controller has a power supply and provides power to the servo motor 13 while controlling its rotation. A piston 14 is fixed to the output end of the servo motor 13. The piston 14 is divided into an inner layer and an outer layer. The inner layer is composed of a metal structure, and the outer layer is made of rubber to improve the sealing ability with the contact surface. The piston 14 is rotatably connected in the central hole 32, and a water-cooled hole is provided at the bottom of the piston 14. When collecting water samples at different depths, the servo motor 13 drives the piston 14 to rotate. Water channel 15 is connected to different water channels 11, allowing water to enter different corrugated bottles 16. The piston 14 at its output end is rotatably connected to the central hole 32. Water channel 15 at the bottom of the piston 14 can rotate under the drive of the servo motor 13. When collecting water samples at different depths, the position of the piston 14 can be precisely adjusted by controlling the rotation of the servo motor 13, so that water channel 15 is connected to different water channels 11 in sequence. This design achieves precise control of the water sample flow direction, ensuring that water samples extracted at different depths can accurately flow into the corresponding corrugated bottles 16. Compared with the traditional single water sample collection method, it greatly improves the accuracy and convenience of collecting water samples at different depths, and can better meet the needs of detecting organic pollutants at different depths of groundwater.

[0032] like Figure 10 As shown, in this embodiment, the side of the circular base 6 is provided with a drain hole 9, which is connected to the central hole 32. When collecting water samples at different depths, the servo motor 13 drives the piston 14 to rotate, and the second water channel 15 is connected to different drain holes 9. When collecting water samples at different depths, the servo motor 13 drives the piston 14 to rotate, so that the second water channel 15 is connected to different drain holes 9. Before collecting water samples at a new depth each time, the water sample remaining in the air bag pump 1 can be discharged through the drain hole 9, so as to avoid the residual water sample from contaminating the newly collected water sample. At the same time, during the second sampling, the new water sample can flow out from the drain hole 9 first, carrying out the pollutants remaining in the second water channel 15, further ensuring the purity of the collected water sample and improving the accuracy of the test results.

[0033] like Figures 2-4 and Figure 6As shown, in this embodiment, the corrugated bottle 16 includes a rigid connecting part 17. The rigid connecting part 17 passes through the round hole 30 and is threaded to the top of the socket 10. The water channel 11 is connected to the rigid connecting part 17. A corrugated part 18 is fixed to the top of the rigid connecting part 17. The rigid connecting part 17 of the corrugated bottle 16 is threaded to the top of the socket 10. The connection method is stable and easy to install and disassemble. It is convenient to remove the corrugated bottle 16 after collecting water samples and send it to the laboratory for testing. The rigid connecting part 17 is connected to the water channel 11 to ensure that the water sample can flow smoothly into the corrugated bottle 16. In the initial state, the corrugated part 18 is in a compressed state, which can effectively reduce the amount of residual air in the bottle. When water is poured into the corrugated bottle 16, the corrugated part 18 gradually expands as the water flows in. Compared with ordinary straight bottle, it can store more water sample. The expansion process can intuitively reflect the water sample collection situation in the bottle. At the same time, it can buffer the impact of water sample to a certain extent and protect the water sample in the bottle from excessive vibration.

[0034] like Figures 2-5 As shown in this embodiment, a protective component 19 is provided on the side of the circular base 6. The protective component 19 includes several vertical plates 20 rotatably connected to the side of the circular base 6. The vertical plates 20 are rotatably connected to the circular base 6 via hinges. When collecting water samples, the vertical plates 20 are attached to the surface of the corrugated part 18. The protective component 19 is located on the side of the circular base 6, and its main component, the vertical plates 20, is rotatably connected to the side of the circular base 6. During the water sample collection process, the vertical plates 20 are attached to the surface of the corrugated part 18, which can effectively prevent the corrugated bottle 16 from being accidentally impacted. The underground water well environment is complex and there are risks such as well wall protrusions and collisions with tools in the well. The vertical plates 20 provide all-round protection to prevent the corrugated bottle 16 from breaking due to collisions, ensuring the safe storage of water samples and ensuring the smooth progress of the testing work.

[0035] like Figure 5As shown, in this embodiment, an arc-shaped groove 31 is provided on the side of the vertical plate 20 near the center of the upper sealing plate 5. A mounting base 21 is fixed to the inner wall of the arc-shaped groove 31. The top of the mounting base 21 is flush with the top of the vertical plate 20. A receiving groove is provided at the bottom of the mounting base 21. A pressure sensor 22 is fixed to the inner wall of the receiving groove. The pressure sensor 22 is connected to an external controller via a wire. The controller has its own power supply and provides power to the pressure sensor 22. When the pressure sensor 22 is subjected to pressure, it can be displayed on the controller. At the same time, the controller regulates the airbag pump 1 to stop the airbag pump 1 from supplying water. A protective film 23 is fixed to the bottom of the mounting base 21. The protective film 23 is attached to the surface of the pressure sensor 22. After the water sample enters the corrugated part 18, the corrugated part 18 expands upward until the top of the corrugated part 18 is attached to the bottom of the pressure sensor 22. The arc-shaped groove 31 on the vertical plate 20 is designed to facilitate the vertical plate 20 to be attached to the surface of the corrugated part 18, and to ensure safety. The mounting base 21 and other components provide an installation position. The mounting base 21 is fixed to the inner wall of the arc-shaped groove 31, and its top is flush with the top of the vertical plate 20 to ensure the overall structural stability of the vertical plate 20. The bottom of the mounting base 21 accommodates the pressure sensor 22 in the groove to monitor the expansion of the corrugated part 18. When the water sample enters the corrugated part 18, it expands upward until the top touches the bottom of the pressure sensor 22. The pressure sensor 22 senses the pressure change and can stop the water supply to the corrugated part 18 through the control system. This design can accurately control the amount of water sample collected in the corrugated bottle 16, avoid damage to the corrugated bottle 16 due to excessive water filling, and ensure that each corrugated bottle 16 can collect water sample at an appropriate capacity, improving the standardization and reliability of water sample collection. The protective film 23 is attached to the surface of the pressure sensor 22 to prevent the water sample from directly contacting the pressure sensor 22, avoiding damage to the pressure sensor 22 due to moisture, corrosion, etc., extending its service life, and ensuring the stable operation of the pressure monitoring function.

[0036] like Figures 2-5As shown, in this embodiment, a protrusion 24 is fixed on the side of the vertical plate 20 away from the center of the upper sealing plate 5. A vertical groove is formed on the top of the protrusion 24, and a roller 25 is rotatably connected to the inner wall of the groove. When collecting water samples, the roller 25 is in contact with the inner wall of the underground water pipe. When the device is lowered or pulled in the underground water well, the roller 25 is in contact with the inner wall of the underground water well. On the one hand, the rolling of the roller 25 can significantly reduce the friction between the protrusion 24 and the inner wall of the underground water well, making the device move more smoothly in the well and reducing the damage to the device due to friction. This reduces the risk and also lowers the manpower and energy required for lifting or lowering the device. On the other hand, the rollers 25 provide support for the vertical plate 20, ensuring that the vertical plate 20 is always in close contact with the surface of the corrugated part 18, and continuously plays a protective role for the corrugated bottle 16. In addition, after multiple rollers 25 form support on the inner wall of the groundwater well, the airbag pump 1 can be accurately positioned in the middle of the groundwater well, avoiding contact between the inlet of the airbag pump 1 and the inner wall of the groundwater well, preventing water samples from being interfered with by impurities on the well wall, and further improving the accuracy of the test results.

[0037] like Figures 2-4 As shown, in this embodiment, the top of the protrusion 24 is provided with an inclined surface 27, and the bottom of the protrusion is provided with a curved surface 26. When the airbag pump 1 is pulled upward, the water flow will generate resistance to the airbag pump 1. At this time, the inclined surface 27 can guide the water flow, change the direction of the water flow, and make the water flow more smoothly around the device, reducing the resistance of the water flow to the airbag pump 1, thereby making it easier to pull the airbag pump 1 upward, reducing energy consumption and equipment wear during the lifting process. During the lowering process, when the wellhead contacts the vertical plate 20, the airbag pump 1 slowly adjusts its position through the guidance of the curved surface 26, while avoiding excessive wear of the wellhead on the vertical plate 20, so that the roller 25 contacts the well wall more smoothly.

[0038] like Figures 2-4 As shown, in this embodiment, a guide head 28 is fixed to the top of the vertical plate 20. The guide head 28 is hollow to reduce the overall weight. The mounting base 21 is fixed to the bottom of the guide head 28. The top of the guide head 28 is provided with a guide surface 29. When collecting water samples, several guide heads 28 fit together to form a hollow frustum structure. The hollow frustum structure is also provided with grooves. These grooves correspond to and have the same function as the grooves on the circular base 6. When the airbag pump 1 is pulled upward, the water flow will generate resistance to the airbag pump 1. At this time, the guide head 28... The top guide surface 29 can guide the water flow, change the direction of the water flow, and make the water flow more smoothly around the device, reducing the resistance of the water flow to the airbag pump 1, thus making it easier to lift the airbag pump 1 upward, reducing energy consumption and equipment wear during the lifting process. Several guide heads 28 fit together to form a hollow frustum structure, which, while ensuring the guiding effect, can also protect the pressure sensor 22 and other components installed on the top of the vertical plate 20 and inside to a certain extent, preventing them from being directly impacted and damaged by the water flow, and improving the overall durability and reliability of the device.

[0039] Working principle: Before sampling, the submersible pump is placed into the well for well washing to remove impurities, dirt and stagnant water accumulated on the well wall and bottom, ensuring that the water sample truly reflects the original groundwater quality. Then, the collection mechanism 2 is installed on top of the airbag pump 1. During installation, the water inlet at the bottom of the lower sealing plate 4 is aligned with the water outlet at the top of the airbag pump 1. After tightening the connecting nut, the air vent is connected to the air pipe, which fits into the groove of the round seat 6. The rigid connecting parts 17 of several corrugated bottles 16 are screwed onto the top of the socket 10. At the same time, the pull rope is connected to the hanging ring at the top of the upper sealing plate 5. The wires of the servo motor 13 and the pressure sensor 22 are attached to the surface of the pull rope. The vertical plate 20 is rotated upward so that the arc groove 31 of the vertical plate 20 fits into the surface of the corrugated bottle 16. Then, the airbag pump 1 is inserted into the groundwater well after well washing by pulling the rope. After the airbag pump 1 is placed inside the groundwater well, the rollers 25 are attached to the inner wall of the groundwater well, reducing the friction between the protrusion 24 and the inner wall of the groundwater well, while providing support for the vertical plate 20, ensuring that the vertical plate 20 is attached to the surface of the corrugated part 18, protecting the corrugated bottle 16. Multiple rollers 25 form a support on the inner wall of the groundwater well, so that the airbag pump 1 is in the middle of the groundwater well, avoiding contact between the inlet of the airbag pump 1 and the well wall. Before the airbag pump 1 is lowered to the first sampling point, water channel 2 15 is connected to the drain hole 9 near the groove. Before sampling, the air inside the airbag pump 1 is first discharged through the drain hole 9. After discharge, the servo motor 13 is started, which drives the piston 14 to rotate, causing water channel 2 15 on the piston 14 to move to the through hole 8 near the drain hole 9. At this time, air is drawn into the airbag pump 1, causing the airbag inside the airbag pump 1 to expand, and the water sample enters the airbag. Then, air is vented to the outside of the airbag of the airbag pump 1, causing the airbag of the airbag pump 1 to contract. The water inside the airbag will flow from the outlet of the airbag pump 1 into water channel 2 15, and then from water channel 2 15 through the through hole 8 into water channel 11, and finally into the corrugated part 18. When the airbag pump 1 is pumping water, the one-way valve at the outlet of the airbag pump 1 is closed, and the one-way valve at the inlet at the bottom of the airbag pump 1 is open. When the airbag pump 1 is draining water, the one-way valve at the outlet at the bottom of the airbag pump 1 is closed. The one-way valve is closed, and the one-way valve at the top drain port of the airbag pump 1 is opened. As the water sample enters, the corrugated part 18 will expand upward. When the top of the corrugated part 18 contacts the pressure sensor 22, the water supply to the corrugated part 18 stops. At this time, the servo motor 13 is started again to connect the second water channel 15 with the next drain hole 9 to discharge the excess water sample inside the airbag. Then, the airbag pump 1 is lowered to the second sampling point and the airbag pump 1 is started again. The water sample drawn by the airbag pump 1 will flush the second water channel 15 and the airbag pump 1 itself. Then, the servo motor 13 is started again to connect the second water channel 15 of the piston 14 with the next through hole 8. After the airbag pump 1 is started, the water sample will be collected in the next corrugated bottle 16. Then, in the same way, water samples at different depths are sampled in sequence, and the second water channel 15 finally stops at the drain hole 9 to prevent the water sample in the corrugated bottle 16 from flowing out. After sampling is completed, the airbag pump 1 is pulled upwards. The guide surface 29 at the top of the guide head 28 guides the water flow, reducing the resistance of the water flow to the airbag pump 1 and making the lifting operation easier. After the water sample collection is completed, the lower sealing plate 4 is removed from the airbag pump 1, the collection mechanism 2 is flipped over, the vertical plate 20 is rotated off the surface of the corrugated bottle 16 so that the vertical plate 20 no longer obstructs the corrugated bottle 16, the corrugated bottle 16 containing water samples at different depths is removed from the socket 10 and sent to the laboratory for testing.

[0040] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art will fully understand this invention even without these detailed descriptions.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A groundwater organic pollutant sample collection device, comprising an airbag pump (1), characterized in that, Also includes: The collection mechanism (2) includes an adjustment seat (3) installed at the outlet of the airbag pump (1), a number of corrugated bottles (16) are installed on the top of the adjustment seat (3), and an adjustment component (12) is provided inside the adjustment seat (3). When collecting water samples at different depths, water is supplied to different corrugated bottles (16) through the regulating component (12).

2. The groundwater organic pollutant sample collection device according to claim 1, characterized in that, The adjusting seat (3) includes a circular seat (6), a lower sealing plate (4) is detachably connected to the bottom of the circular seat (6), a water inlet is provided at the bottom of the lower sealing plate (4), the water inlet of the lower sealing plate (4) is connected to the water outlet of the airbag pump (1), an upper sealing plate (5) is detachably connected to the top of the circular seat (6), grooves are provided on the sides of the lower sealing plate (4), the circular seat (6) and the upper sealing plate (5), and a central hole (32) and several inserts are provided on the top of the circular seat (6). The hole (7) is arranged in a circular array. The top of the lower cover plate (4) is fixed with several sockets (10). The sockets (10) are located inside the sockets (7). The inner wall of the central hole (32) is provided with a through hole (8). The side of the socket (10) is provided with a water channel (11). The through hole (8) is connected to the water channel (11). The top of the upper cover plate (5) is provided with several round holes (30). The round holes (30) are connected to the sockets (7).

3. The groundwater organic pollutant sample collection device according to claim 2, characterized in that, The adjusting component (12) includes a servo motor (13) fixed to the bottom of the upper sealing plate (5). The servo motor (13) is located in the center hole (32). A piston (14) is fixed to the output end of the servo motor (13). The piston (14) is rotatably connected in the center hole (32). A second water channel (15) is opened at the bottom of the piston (14). When collecting water samples at different depths, the servo motor (13) drives the piston (14) to rotate. The second water channel (15) is connected to different first water channels (11), so that the water enters into different corrugated bottles (16).

4. The groundwater organic pollutant sample collection device according to claim 3, characterized in that, The circular seat (6) has a drainage hole (9) on its side. The drainage hole (9) is connected to the central hole (32). When collecting water samples at different depths, the servo motor (13) drives the piston (14) to rotate, and the waterway (15) is connected to different drainage holes (9).

5. The groundwater organic pollutant sample collection device according to claim 3, characterized in that, The corrugated bottle (16) includes a rigid connecting part (17), which passes through a round hole (30) and is threaded to the top of the socket (10). Water channel 1 (11) is connected to the rigid connecting part (17), and a corrugated part (18) is fixed to the top of the rigid connecting part (17).

6. The groundwater organic pollutant sample collection device according to claim 5, characterized in that, The side of the round seat (6) is provided with a protective component (19). The protective component (19) includes several vertical plates (20) rotatably connected to the side of the round seat (6). When collecting water samples, the vertical plates (20) are attached to the surface of the corrugated part (18).

7. The groundwater organic pollutant sample collection device according to claim 6, characterized in that, The vertical plate (20) has an arc-shaped groove (31) on the side near the center of the upper sealing plate (5). The inner wall of the arc-shaped groove (31) is fixed with a mounting base (21). The top of the mounting base (21) is flush with the top of the vertical plate (20). The bottom of the mounting base (21) has a receiving groove. The inner wall of the receiving groove is fixed with a pressure sensor (22). The bottom of the mounting base (21) is fixed with a protective film (23). The protective film (23) is attached to the surface of the pressure sensor (22). After the water sample enters the corrugated part (18), the corrugated part (18) expands upward until the top of the corrugated part (18) is attached to the bottom of the pressure sensor (22).

8. The groundwater organic pollutant sample collection device according to claim 6, characterized in that, The vertical plate (20) has a protrusion (24) fixed on the side away from the center of the upper sealing plate (5). The top of the protrusion (24) has a vertical groove, and a roller (25) is rotatably connected to the inner wall of the vertical groove. When collecting water samples, the roller (25) is attached to the inner wall of the underground water pipe.

9. The groundwater organic pollutant sample collection device according to claim 8, characterized in that, The top of the protrusion (24) is provided with a slope (27), and the bottom of the protrusion is provided with a curved surface (26).

10. The groundwater organic pollutant sample collection device according to claim 7, characterized in that, The top of the vertical plate (20) is fixed with a guide head (28), and the mounting base (21) is fixed at the bottom of the guide head (28). The top of the guide head (28) is provided with a guide surface (29). When collecting water samples, several guide heads (28) fit together to form a hollow truncated cone structure.

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