Portable rapid analysis device and analysis method for underground water

Abstract

The invention relates to the field of underground water analysis, in particular to a portable rapid underground water analysis device which comprises a box body, a folding mechanism, a filtering mechanism and an analysis mechanism, the folding mechanism comprises a plurality of tube shells, cavities and elastic connecting films, the cavities are arranged in the tube shells, the number of the cavities is the same as that of the tube shells, the adjacent cavities are connected through the elastic connecting films, and the adjacent cavities communicate with each other; the filtering mechanism is used for filtering water entering the folding mechanism; the analysis mechanism is used for performing water quality analysis on underground water; the folding mechanism, the filtering mechanism and the analyzing mechanism can be placed in the box body. The size of the device can be reduced, a user can operate and carry the device conveniently, the surface of the filter screen can be washed, impurities can be prevented from being attached to the filter screen all the time, and the impurities are prevented from blocking the filter screen and affecting water taking.

Description

Technical Field

[0001] This invention belongs to the field of groundwater analysis technology, and specifically relates to a portable rapid analysis device and analysis method for groundwater. Background Technology

[0002] Currently, groundwater quality analysis is mainly divided into two modes: laboratory testing and on-site testing. While laboratory testing can achieve multi-index, high-precision detection, it has significant limitations: it requires manual on-site collection of groundwater samples, and problems such as incomplete well washing and improper sample preservation can easily occur during sampling, leading to cross-contamination or changes in composition, affecting the reliability of the test data; at the same time, samples need to be transported in sealed containers to a professional laboratory, and the testing cycle usually takes several days, making it impossible to achieve real-time capture and rapid response to contamination.

[0003] To address the lag in laboratory testing, portable groundwater analysis devices are increasingly being used in field testing scenarios, becoming the preferred equipment for small and medium-sized enterprises and grassroots environmental protection departments. However, existing portable devices require separate water sampling and testing mechanisms. The water sampling process necessitates additional sampling tools, making the operation cumbersome. Furthermore, the water sample must be manually transferred to the testing module after sampling, which not only increases operational complexity but may also cause secondary pollution of the water sample. In addition, the large size makes them inconvenient to carry, especially when operating in complex terrain in the field, significantly increasing the difficulty of transportation and operation, and making it difficult to meet the diverse needs of field testing scenarios. Summary of the Invention

[0004] To address the above problems, the present invention provides a portable rapid analysis device for groundwater, comprising a housing, a folding mechanism, a filtering mechanism, and an analysis mechanism; The folding mechanism includes several tube shells, cavities, and elastic connecting membranes. The cavities are disposed inside the tube shells, and the number of cavities is the same as the number of tube shells. Adjacent cavities are connected by elastic connecting membranes and are interconnected. The filtration mechanism is used to filter the water entering the folding mechanism; The analytical apparatus is used for water quality analysis of groundwater; The folding mechanism, filtering mechanism, and analysis mechanism can be housed within the enclosure.

[0005] In one embodiment of this application, a positioning member is provided on the side of the housing, and the positioning member is used to position the adjacent housing below; The positioning element includes a stud and a guide groove. The stud is slidably engaged with the guide groove. The stud is threaded onto the adjacent upper sidewall of the tube shell. The guide groove is formed on the adjacent lower sidewall of the tube shell. The bottom of the guide groove has grooves at both ends, and the end of the stud can be inserted into the groove.

[0006] In one embodiment of this application, the filtration mechanism includes a housing and a filter screen. The housing is detachably installed at the lowermost end of the tube shell, and the filter screen is disposed inside the housing and located below the water inlet of the cavity.

[0007] In one embodiment of this application, a cleaning component is provided inside the housing. The cleaning component includes an impeller and a motor. The rotating shaft of the motor is keyed to the axle of the impeller. The motor is fixedly installed inside the housing. The impeller is rotatably installed inside the housing. Bristles are provided on the side of the impeller adjacent to the filter screen. The bristles are capable of cleaning the surface of the filter screen.

[0008] In one embodiment of this application, the blades of the impeller adopt an arc-shaped curved surface flow guiding structure, the blades of the impeller are arranged in a ring array along the impeller shaft, and the water-facing surface of the impeller blades is arc-shaped and concave, which is used to form a spiral water flow when the water flows through. The impeller blades are set as inclined blades. When the motor rotates, the impeller drives the blades to rotate, which can draw water upward. The bristles are disposed on the blades of the impeller.

[0009] In one embodiment of this application, a sleeve is provided on the upper part of the tube shell, and a piston is slidably installed inside the sleeve, with one end of the piston being able to be inserted into the uppermost cavity.

[0010] In one embodiment of this application, a water pump is connected to the side of the casing via a conduit, one end of the water pump is connected to a water supply device, the conduit is a transparent tube, and a valve is provided on the conduit; When the piston is pulled up, the transparent tube connects to the uppermost cavity. When the valve is opened, the water pump can draw water to flush the cavity. When the piston moves down, it blocks the communication channel between the transparent tube and the cavity, thus disconnecting the transparent tube from the uppermost cavity.

[0011] In one embodiment of this application, the analysis mechanism includes a detection probe, a processor, and a display. The detection probe is used to detect water quality parameters, and the display is used to display the detection data. The detection probe is signal-connected to the processor, and the processor is signal-connected to the display. The detection probe is fixedly installed on the conical end of the piston, and the processor and display are disposed inside the housing.

[0012] In one embodiment of this application, one end of the piston is configured as a cone, and the cone end of the piston can fit against the inner wall of the uppermost cavity; When the end of the piston is inserted into the uppermost cavity, the groundwater in the uppermost cavity can be squeezed out. When the piston is pulled up, the conical part of the piston separates from the inner wall of the uppermost cavity, which can create negative pressure to draw in groundwater.

[0013] The present invention also provides a portable rapid analysis method for groundwater, the analysis method comprising: when water sampling analysis is required, placing the bottommost tube shell into the water; when sampling water, first rotating the stud to separate the stud head from the groove at the lower end of the guide groove, thereby releasing the stud from the locking state of the tube shell; Pull the tubing from bottom to top to create negative pressure in the cavity. As adjacent tubing is pulled out, water will be drawn into the bottom cavity. Then, pull the tubing from bottom to top to pump water in sequence. Finally, pull the piston to separate it from the top cavity, allowing water to be pumped out of the top cavity. While pumping water, the detection probe detects parameters of the water in the cavity, and then the processor displays the detection data on the screen. After the tube is fully unfolded, the stud is rotated to insert into the groove at the upper end of the guide groove, thereby fixing the position of the tube and putting the folding mechanism in the unfolded state. When storing, rotating the positioning piece in the opposite direction will allow adjacent tube shells to be nested together, and adjacent cavities to be nested together for folding. During the folding process, water inside the cavities can be drained, and the volume of the folding mechanism can be reduced, allowing it to be stored inside the box.

[0014] The beneficial effects of this invention are: 1. By using the folding mechanism, when water sampling and analysis are required, the bottommost tube is placed in the water. During water sampling, the cavity is under negative pressure. Therefore, when the adjacent tubes are pulled out, the bottommost cavity will draw water in. Then, the tubes are pulled from bottom to top sequentially to pump water. Finally, the piston is pulled to separate it from the topmost cavity, allowing water to be pumped out of the topmost cavity. During the pumping process, the detection probe simultaneously detects the parameters of the water sampled from the cavity. The processor then displays the detection data on the screen. The water sampling operation is completed when the folding mechanism is opened, and the analysis can be performed quickly. When storing, adjacent tubes are nested together to fold the adjacent cavities. During the folding process, water in the cavity is drained, and the size of the folding mechanism is reduced, making it easy to store and reducing the overall size of the device, making it easier for users to operate and carry.

[0015] 2. By using the positioning component, when unfolding the folding mechanism, first rotate the stud to separate the stud head from the groove at the lower end of the guide groove, releasing the stud from the locking state of the tube shell. Pull out the tube shell to move it down. After the lower tube shell is in place, rotate the stud to insert it into the groove at the upper end of the guide groove, fixing the position of the tube shell and ensuring that the folding mechanism is in the unfolded state. By reversing the operation, the folding mechanism can be folded, making it convenient for users to operate.

[0016] 3. When drawing water, first completely submerge the shell in water, then unfold the folded structure to pump water. During this process, the water entering the cavity is first filtered by the filter screen, which can prevent large particles of impurities from entering the cavity. At the same time, the motor is turned on while drawing water. The motor drives the impeller to rotate, which makes the water swirl upward, assisting the negative pressure pumping of water in the cavity. The brush bristles follow the rotation of the impeller blades to wash the surface of the filter screen, which can prevent impurities from adhering to the filter screen and prevent impurities from clogging the filter screen and affecting water drawing.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure according to an embodiment of the present invention is shown.

[0020] Figure 2 An isometric schematic diagram of a folding mechanism according to an embodiment of the present invention is shown.

[0021] Figure 3 An isometric schematic diagram of a tube shell according to an embodiment of the present invention is shown.

[0022] Figure 4 An embodiment of the present invention is shown. Figure 3 Enlarged schematic diagram of the structure of section A in the middle.

[0023] Figure 5 An isometric schematic diagram of a filter mechanism according to an embodiment of the present invention is shown.

[0024] Figure 6An embodiment of the present invention is shown. Figure 5 Enlarged schematic diagram of section B in the middle.

[0025] Figure 7 An isometric schematic diagram of a cleaning assembly according to an embodiment of the present invention is shown.

[0026] Figure 8 An isometric schematic diagram of a cavity according to an embodiment of the present invention is shown.

[0027] Figure 9 An isometric schematic diagram of the tapered end of a piston according to an embodiment of the present invention is shown.

[0028] In the diagram: 1. Housing; 2. Folding mechanism; 201. Tube shell; 2011. Sheath; 2012. Piston; 2013. Conduit; 2014. Water pump; 202. Cavity; 203. Elastic connecting membrane; 3. Filtration mechanism; 301. Housing; 302. Filter screen; 4. Analysis mechanism; 401. Detection probe; 402. Processor; 403. Display; 5. Positioning component; 501. Stud; 502. Guide groove; 503. Groove; 6. Cleaning assembly; 601. Impeller; 602. Motor; 603. Brush bristles. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention provides a portable rapid analysis device for groundwater, see reference. Figures 1-9 The system includes a housing 1, a folding mechanism 2, a filtering mechanism 3, and an analysis mechanism 4. The folding mechanism 2 includes a plurality of tube shells 201, cavities 202, and elastic connecting membranes 203. The cavities 202 are disposed inside the tube shells 201. The number of cavities 202 is the same as the number of tube shells 201. Adjacent cavities 202 are connected by elastic connecting membranes 203 and are interconnected. It should be noted that the cavity 202 is configured as a conical chamber, and the cavity 202 can be inserted into the chamber of the adjacent cavity 202 from top to bottom; In this embodiment, the number of shells 201 is set to three, and the number of cavities 202 is the same as the number of shells; The enclosure 1 is equipped with a power supply for supplying power to the electrical structure; The filtration mechanism 3 is used to filter the water entering the folding mechanism 2; The analysis unit 4 is used for water quality analysis of groundwater; The folding mechanism 2, the filtering mechanism 3, and the analysis mechanism 4 can be placed inside the housing 1; The upper part of the tube shell 201 is provided with a sleeve 2011, and a piston 2012 is slidably installed inside the sleeve 2011. One end of the piston 2012 can be inserted into the uppermost cavity 202. One end of the piston 2012 is set in a conical shape, and the conical end of the piston 2012 can fit against the inner wall of the uppermost cavity 202; When the end of the piston 2012 is inserted into the uppermost cavity 202, the groundwater in the uppermost cavity 202 can be squeezed out. When piston 2012 is pulled up, the conical part of piston 2012 separates from the inner wall of the uppermost cavity 202, which can create negative pressure to draw in groundwater.

[0031] Using the above scheme, through the use of the folding mechanism 2, when water sampling and analysis are required, the lowest tube shell 201 is placed in the water. During water sampling, the cavity 202 is under negative pressure. Therefore, when the adjacent tube shells 201 are pulled out, the lowest cavity 202 will draw water in. Then, the tube shells 201 are pulled from bottom to top sequentially to draw water. Finally, the piston 2012 is pulled, causing the piston 2012 to separate from the uppermost cavity 202, thus allowing water to be drawn from the uppermost cavity 202. During the water drawing process, the detection probe 401 simultaneously probes the cavity 202. The water extracted from the 02 is subjected to parameter detection, and then the processor 402 displays the detection data on the display 403. The water extraction operation can be completed while the folding mechanism 2 is being opened, and then the detection can be performed quickly. When storing, the adjacent tube shells 201 are nested together to fold the adjacent cavities 202 together. During the folding process, the water in the cavity 202 can be drained, and the volume of the folding mechanism 2 is reduced, making it easier to store and reducing the size of the device, which is convenient for users to operate and carry.

[0032] For example, a positioning member 5 is provided on the side of the tube shell 201, and the positioning member 5 is used to position adjacent tube shells 201. The positioning component 5 includes a stud 501 and a guide groove 502. The stud 501 and the guide groove 502 are slidably engaged. The stud 501 is threaded onto the adjacent upper side wall of the tube shell 201. The guide groove 502 is formed on the adjacent lower side wall of the tube shell 201. The bottom of the guide groove 502 is provided with grooves 503 at both ends, and the end of the stud 501 can be inserted into the grooves 503.

[0033] Using the above scheme, by using the positioning component 5, when unfolding the folding mechanism 2, first rotate the stud 501 to separate the stud head of the stud 501 from the groove 503 at the lower end of the guide groove 502, releasing the locking state of the stud 501 on the tube shell 201. Pull out the tube shell 201 to move it down. After the lower tube shell 201 is in place, rotate the stud 501 to insert it into the groove 503 at the upper end of the guide groove 502, fixing the position of the tube shell 201 and ensuring that the folding mechanism 2 is in the unfolded state. By reversing the operation, the folding mechanism 2 can be folded, which is convenient for users to operate.

[0034] For example, the filtration mechanism 3 includes a housing 301 and a filter screen 302. The housing 301 is detachably installed at the lowermost end of the tube shell 201. The filter screen 302 is disposed inside the housing 301 and is located below the water inlet of the cavity 202. It should be noted that in this embodiment, the housing 301 is installed at the end of the lowest tube housing 201 by means of a threaded connection; A cleaning component 6 is provided inside the housing 301. The cleaning component 6 includes an impeller 601 and a motor 602. The rotating shaft of the motor 602 is keyed to the axle of the impeller 601. The motor 602 is fixedly installed inside the housing 301. The impeller 601 is rotatably installed inside the housing 301. Brush bristles 603 are provided on the side of the impeller 601 adjacent to the filter screen 302. The brush bristles 603 can clean the surface of the filter screen 302. The blades of the impeller 601 adopt an arc-shaped curved surface flow guiding structure. The blades of the impeller 601 are arranged in a ring array along the shaft of the impeller 601. The water-facing surface of the blades of the impeller 601 is arc-shaped and concave, which is used to form a spiral water flow when the water flows through. The blades of the impeller 601 are set as inclined blades. When the motor 602 rotates, the impeller 601 drives the blades to rotate, which can draw water upward. The bristles 603 are disposed on the blades of the impeller 601.

[0035] Using the above scheme, when taking water, the shell 301 is first completely submerged in water, and then the folded structure is unfolded for water pumping. During this process, the water entering the cavity 202 is first filtered by the filter screen 302, which can prevent large particles of impurities from entering the cavity 202. At the same time, the motor 602 is turned on when taking water. The motor 602 drives the impeller 601 to rotate, which makes the water generate an upward swirling effect, assisting the negative pressure pumping of water in the cavity 202. Furthermore, the brush bristles 603 follow the rotation of the impeller blades 601 to wash the surface of the filter screen 302, which can prevent impurities from adhering to the filter screen 302 and prevent impurities from clogging the filter screen 302 and affecting water intake.

[0036] For example, a water pump 2014 is connected to the side of the housing 2011 via a conduit 2013. One end of the water pump 2014 is connected to a water supply component. The conduit 2013 is a transparent tube and a valve is provided on the conduit 2013. When piston 2012 is pulled up, the transparent tube is connected to the uppermost cavity 202. When the valve is opened, water pump 2014 can pump water to flush cavity 202. When piston 2012 moves downward, piston 2012 blocks the communication channel between the transparent tube and cavity 202, and the transparent tube is disconnected from the uppermost cavity 202.

[0037] It should be noted that in this embodiment, the water supply device is set as a bottle containing clean water; in other embodiments, the water supply device includes, but is not limited to, a water bottle or a kettle.

[0038] Using the above scheme, after the water analysis is completed by using the water pump 2014, the transparent tube is connected to the uppermost cavity 202 by pulling the piston 2012, the valve is opened, and the cleaning water in the water supply component is pumped into the cavity 202 by the water pump 2014 to clean the cavity 202, which is convenient for subsequent analysis.

[0039] Specifically, the analysis unit 4 includes a detection probe 401, a processor 402, and a display 403. The detection probe 401 is used to detect water quality parameters. The processor 402 is used to convert the information detected by the detection probe 401 into data displayed on the display 403. The display 403 is used to display the detection data. The detection probe 401 is signal-connected to the processor 402, and the processor 402 is signal-connected to the display 403. The detection probe 401 is fixedly installed on the conical end of the piston 2012. The processor 402 and the display 403 are disposed inside the housing 1.

[0040] In summary, the working principle of this application is as follows: When water sampling and analysis are required, the lowest tube shell 201 is placed in water. During water sampling, the cavity 202 is under negative pressure. Therefore, when the adjacent tube shells 201 are pulled out, the lowest cavity 202 will draw water in. Then, the tube shells 201 are pulled from bottom to top sequentially to pump water. Finally, the piston 2012 is pulled, separating it from the uppermost cavity 202, allowing water to be pumped from the uppermost cavity 202. During the pumping process, the detection probe 401 simultaneously analyzes the water sampled from the cavity 202. The parameters are detected, and then the processor 402 displays the detection data on the display 403. The water intake operation can be completed while the folding mechanism 2 is opened, and then the detection can be performed quickly. When storing, the adjacent tube shells 201 are nested together, and the adjacent cavities 202 are nested together and folded. During the folding process, the water in the cavity 202 can be drained, and the volume of the folding mechanism 2 is reduced, making it easier to store and reduce the size of the device, making it easier for users to operate and carry. By using the positioning component 5, when unfolding the folding mechanism 2, first rotate the stud 501 to separate the stud head of the stud 501 from the groove 503 at the lower end of the guide groove 502, thereby releasing the locking state of the stud 501 on the tube shell 201. Pull out the tube shell 201 to move it down. After the lower tube shell 201 is in place, rotate the stud 501 to insert it into the groove 503 at the upper end of the guide groove 502, thereby fixing the position of the tube shell 201 and ensuring that the folding mechanism 2 is in the unfolded state. By reversing the operation, the folding mechanism 2 can be folded, which is convenient for users to operate. When drawing water, the housing 301 is first completely submerged in water, and then the folded structure is unfolded for pumping. During this process, the water entering the cavity 202 is first filtered by the filter screen 302, which can prevent large particles of impurities from entering the cavity 202. At the same time, the motor 602 is turned on, and the motor 602 drives the impeller 601 to rotate, so that the water generates an upward swirling effect, which assists the negative pressure pumping of water in the cavity 202. Furthermore, the brush bristles 603 follow the rotation of the impeller 601 blades to wash the surface of the filter screen 302, which can prevent impurities from adhering to the filter screen 302 and prevent impurities from clogging the filter screen 302 and affecting water drawing.

[0041] Based on the above-mentioned portable rapid analysis device for groundwater, this embodiment of the invention also proposes a portable rapid analysis method for groundwater. For example, the analysis method includes: when water sampling analysis is required, the lowermost tube shell 201 is placed in water. When sampling water, the stud 501 is rotated first to separate the stud head of the stud 501 from the groove 503 at the lower end of the guide groove 502, thereby releasing the locking state of the stud 501 on the tube shell 201. Pull the shell 201 from bottom to top to create a negative pressure in the cavity 202. As the adjacent shell 201 is pulled out, the lowest cavity 202 will pump water in. Then, pull the shell 201 from bottom to top to pump water in sequence. Finally, pull the piston 2012 to separate it from the uppermost cavity 202, so that the uppermost cavity 202 can be pumped out. While pumping water, the detection probe 401 detects the parameters of the water in the cavity 202, and then the processor 402 displays the detection data on the display 403. After the tube shell 201 is fully unfolded, the stud 501 is rotated to insert the stud 501 into the groove 503 at the upper end of the guide groove 502, thereby fixing the position of the tube shell 201 and putting the folding mechanism 2 into the unfolded state. The water intake operation can be completed while the folding mechanism 2 is being opened, and the analysis can be performed quickly. When storing, rotating the positioning component 5 in the opposite direction will allow the adjacent tube shells 201 to be nested together, and the adjacent cavities 202 to be nested together for folding. During the folding process, the water inside the cavity 202 can be drained, and the volume of the folding mechanism 2 can be reduced, allowing it to be stored inside the box 1.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable rapid analysis device for groundwater, characterized in that: It includes a housing, a folding mechanism, a filtering mechanism, and an analysis mechanism. The folding mechanism includes several tube shells, cavities, and elastic connecting membranes. The cavities are disposed inside the tube shells, and the number of cavities is the same as the number of tube shells. Adjacent cavities are connected by elastic connecting membranes and are interconnected. The filtration mechanism is used to filter the water entering the folding mechanism; The analytical apparatus is used for water quality analysis of groundwater; The folding mechanism, filtering mechanism, and analysis mechanism can be housed within the enclosure.

2. The portable rapid analysis device for groundwater according to claim 1, characterized in that: The side of the tube shell is provided with a positioning element, which is used to position adjacent tube shells. The positioning element includes a stud and a guide groove. The stud is slidably engaged with the guide groove. The stud is threaded onto the adjacent upper sidewall of the tube shell. The guide groove is formed on the adjacent lower sidewall of the tube shell. The bottom of the guide groove has grooves at both ends, and the end of the stud can be inserted into the groove.

3. The portable rapid analysis device for groundwater according to claim 1, characterized in that: The filtration mechanism includes a housing and a filter screen. The housing is detachably installed at the lowermost end of the tube shell, and the filter screen is disposed inside the housing and located below the water inlet of the cavity.

4. A portable rapid analysis device for groundwater according to claim 3, characterized in that: The housing contains a cleaning assembly, which includes an impeller and a motor. The rotating shaft of the motor is keyed to the axle of the impeller. The motor is fixedly installed inside the housing, and the impeller is rotatably installed inside the housing. The side of the impeller adjacent to the filter screen is provided with bristles, which can clean the surface of the filter screen.

5. A portable rapid analysis device for groundwater according to claim 4, characterized in that: The impeller blades adopt an arc-shaped curved surface flow guiding structure. The impeller blades are distributed in a ring array along the impeller shaft, and the water-facing surface of the impeller blades is arc-shaped. The impeller blades are set as inclined blades. When the motor rotates, the impeller drives the blades to rotate, which can draw water upward. The bristles are disposed on the blades of the impeller.

6. A portable rapid analysis device for groundwater according to claim 1, characterized in that: The upper part of the tube shell is provided with a sleeve, and a piston is slidably installed inside the sleeve. One end of the piston can be inserted into the uppermost cavity.

7. A portable rapid analysis device for groundwater according to claim 6, characterized in that: A water pump is connected to the side of the casing via a conduit. One end of the water pump is connected to a water supply component. The conduit is a transparent tube and is equipped with a valve. When the piston is pulled up, the transparent tube connects to the uppermost cavity. When the valve is opened, the water pump can draw water to flush the cavity. When the piston moves down, it blocks the communication channel between the transparent tube and the cavity, thus disconnecting the transparent tube from the uppermost cavity.

8. A portable rapid analysis device for groundwater according to claim 7, characterized in that: The analysis unit includes a detection probe, a processor, and a display. The detection probe is used to detect water quality parameters, and the display is used to display the detection data. The detection probe is signal-connected to the processor, and the processor is signal-connected to the display. The detection probe is fixedly installed on the conical end of the piston, and the processor and display are disposed inside the housing.

9. A portable rapid analysis device for groundwater according to claim 6, characterized in that: One end of the piston is tapered, and the tapered end of the piston can fit against the inner wall of the uppermost cavity; When the end of the piston is inserted into the uppermost cavity, the groundwater in the uppermost cavity can be squeezed out. When the piston is pulled up, the conical part of the piston separates from the inner wall of the uppermost cavity, which can create negative pressure to draw in groundwater.

10. A portable rapid analysis method for groundwater as described in any one of claims 1-9, characterized in that: The analytical method includes: When water sampling and analysis are required, the bottommost tube shell is placed in the water. When taking water, first rotate the stud to separate the stud head from the groove at the lower end of the guide groove, thus releasing the stud from the locking state of the tube shell. Pull the tubing from bottom to top to create negative pressure in the cavity. As adjacent tubing is pulled out, water will be drawn into the bottom cavity. Then, pull the tubing from bottom to top to pump water in sequence. Finally, pull the piston to separate it from the top cavity, allowing water to be pumped out of the top cavity. While pumping water, the detection probe detects parameters of the water in the cavity, and then the processor displays the detection data on the screen. After the tube is fully unfolded, the stud is rotated to insert into the groove at the upper end of the guide groove, thereby fixing the position of the tube and putting the folding mechanism in the unfolded state. When storing, rotating the positioning piece in the opposite direction will allow adjacent tube shells to be nested together, and adjacent cavities to be nested together for folding. During the folding process, water inside the cavities can be drained, and the volume of the folding mechanism can be reduced, allowing it to be stored inside the box.

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