Underground water sampler and multi-depth underground water sampling system
By designing groundwater samplers with axial and radial holes and connecting them in series with long pipes to form a multi-depth sampling system, the problems of low efficiency and high cost in existing multi-depth sampling technologies are solved, and rapid and low-cost multi-depth water sample acquisition is achieved.
Patent Information
- Application Number
- CN202520168772.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Existing technologies make it difficult to obtain water samples from multiple underground depths at once, especially in areas with weak permeability where sampling is time-consuming and costly.
Design a groundwater sampler comprising a hollow cylindrical sampling container and a sealed cap. The sampling container has axial and radial holes for connecting a suction tube. The sampler is connected in series with a long tube to form a multi-depth sampling system, which simplifies assembly and reduces costs.
It enables rapid sampling at multiple underground depths, reduces sampling costs, provides water quality information at different depths, and is suitable for different geological environments.
Smart Images
Figure CN223841545U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of groundwater monitoring technology, specifically to a groundwater sampler and a multi-depth groundwater sampling system. Background Technology
[0002] Groundwater serves as a vital source of drinking water, industrial water, and agricultural irrigation, and is closely intertwined with human life. Given the complex and ever-changing groundwater environment, real-time sampling and monitoring are essential for timely detection of groundwater pollution. Therefore, groundwater sampling and monitoring are fundamental to groundwater environmental protection, requiring sampling and testing at different depths. Current sampling methods can only achieve sampling at a few depths, but are costly and cannot simultaneously sample more than ten depths. For sampling depths located in weakly permeable layers, the low permeability can necessitate extracting the required amount of water for observation, potentially taking several hours. Therefore, obtaining water samples from multiple depths simultaneously, especially from multiple weakly permeable layers, and shortening the sampling time for groundwater in these layers, is a critical technical challenge that urgently needs to be addressed. Utility Model Content
[0003] To address the current technical problems of low efficiency and high cost in groundwater sampling, especially the long sampling time for weakly permeable layers, this invention provides a groundwater sampler and a multi-depth groundwater sampling system that can simultaneously sample more than 10 different groundwater depths. It is easy to assemble and inexpensive.
[0004] The present invention adopts the following technical solution:
[0005] On one hand, this utility model provides a groundwater sampler, which includes a hollow cylindrical sampling container and a cover sealed at the upper and lower openings of the sampling container. Several axial through holes are formed on the annular wall of the sampling container, and the axial through holes extend out of the two ends of the sampling container. A suction tube communicating with the inner cavity of the sampling container is installed on one of the covers. Several radial holes communicating with the inner cavity of the sampling container are also provided on the annular wall of the sampling container.
[0006] Furthermore, a short tube is connected to each end of the sampler, one end of the short tube is provided with an internal thread, and the upper and lower ends of the sampling container are respectively provided with external threads, and the upper and lower ends of the sampling container are respectively threadedly connected to the corresponding short tubes.
[0007] Preferably, the sampling container has internal threads at both ends of its opening, and the lid has external threads that form a threaded connection with the internal threads of the sampling container.
[0008] Preferably, the suction tube is disposed on the cap at the upper opening of the sampling container. The suction tube includes tube connectors disposed on both sides of the cap and a suction tube that is inserted into the tube connector on the inner side of the cap. The lower end of the suction tube extends to the bottom of the inner cavity of the sampling container, and the two tube connectors are connected.
[0009] Alternatively, preferably, the suction tube is disposed on the cap at the lower opening of the sampling container, the suction tube is a tube connector disposed on the outside of the cap, and the suction tube is connected to the inner cavity of the sampling container.
[0010] Preferably, the sampling container has at least 10 axial through holes on its annular wall.
[0011] Preferably, the radial holes on the ring wall of the sampling container are arranged at vertical intervals along its generatrix.
[0012] Preferably, the sampling container has multiple rows of radial holes on its annular wall.
[0013] On the other hand, this utility model also provides a multi-depth groundwater sampling system, the system including at least 10 sampling hoses, multiple long tubes and samplers, each of the long tubes and the samplers being alternately connected in series to form a sampling pipeline, the samplers being the samplers described above, one end of each long tube forming a detachable fixed connection with one end of the sampler, and the other end of each long tube forming a detachable fixed connection with one end of another sampler; each sampling hose passes through the axial through hole on each sampler from top to bottom and is connected to the suction tube of the sampler at the corresponding depth.
[0014] Preferably, the multiple long tubes are arranged in equal lengths, and the two ends of the long tubes are respectively connected to the short tubes on the sampler by insertion, and the long tubes and short tubes are fixed from the side by fastening connectors.
[0015] The technical solution of this utility model has the following advantages:
[0016] A. The groundwater sampler provided by this utility model can be connected in series with an inexpensive long pipe to form a long pipe with a total length of about 1m. According to the measured underground depth, several long pipes of a specified length can be connected in series to form a groundwater sampling system with multiple depths. It is convenient to transport and assemble. The axial hole on each sampler can realize the connection of more than 10 sampling hoses. After positioning the sampling hoses, water samples that have penetrated into sampling containers at different depths can be extracted. The structure is simple and the manufacturing cost is low.
[0017] B. This utility model system can be installed in different geological environments. Water from the underground aquifer permeates into the sampler at the corresponding depth for collection. Compared with conventional sampling wells, the sampling system provided by this utility model has lower sampling costs and can provide groundwater quality information at different depths.
[0018] C. This utility model can design and manufacture long pipes and sampler sizes of corresponding lengths or diameters according to actual drilling borehole diameters and monitoring needs, and can be applied to different drilling borehole diameters. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model, the drawings used in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a structural diagram of the sampler provided by this utility model;
[0021] Figure 2 yes Figure 1 Top view shown;
[0022] Figure 3 yes Figure 2 A cross-sectional view of the sampling container;
[0023] Figure 4a yes Figure 2 The cover shown in the figure is a cross-sectional view (Example 1);
[0024] Figure 4b yes Figure 2 A cross-sectional view of the structure shown in the cover (Example 2);
[0025] Figure 4c yes Figure 2 The cover shown in the figure is a cross-sectional view (Example 3);
[0026] Figure 5 This is a schematic diagram illustrating the connection principle between multiple long tubes and sampling hoses provided by this utility model;
[0027] Figure 6 This is a schematic diagram of the connection between the short tube and the sampling container provided by this utility model;
[0028] Figure 7 This is a schematic diagram showing the connection of the long tube, sampling hose, and sampler provided by this utility model;
[0029] Figure 8 This is a structural diagram of a multi-depth groundwater sampling system.
[0030] The diagram is labeled as follows:
[0031] 1-Sampling tubing
[0032] 2-long tube
[0033] 3-Sampler
[0034] 31-Sampling Container
[0035] 32-Lid
[0036] 33-Suction tube, 331-Tube connector, 332-Suction tube
[0037] 34-Short tube
[0038] 4-Aquifer
[0039] a-Axial through hole; b-Radial hole; d-Internal thread; c-External thread. Detailed Implementation
[0040] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0043] like Figure 1As shown in Figure 4, this utility model provides a groundwater sampler. The sampler 3 includes a hollow cylindrical sampling container 31 and a cover 32 sealed at the upper and lower openings of the sampling container 31. Several axial through holes a are formed on the annular wall of the sampling container 31. The axial through holes a extend from both ends of the sampling container 31 and are used for sampling hoses 1 to pass through the axial through holes a. One sampling hose 1 passes through each axial through hole a. A suction tube 33 connected to the inner cavity of the sampling container 31 is installed on the cover 32. The suction tube 33 extends out of the outer side of the cover 32. The suction tube 33 located in the inner cavity can be inserted near the bottom of the sampling container 31, which is beneficial for extracting water samples entering the sampling container 31. At the same time, several radial holes b are provided on the annular wall of the sampling container 31 and are connected to the inner cavity of the sampling container 31. Water in the formation can enter the sampling container 31 through the radial holes b.
[0044] To facilitate the assembly of each sampler, such as Figure 5 As shown, this utility model connects a short tube 34 to each end of the sampling container 31. One end of the short tube 34 is provided with an internal thread d, and the upper and lower ends of the sampling container 31 are respectively provided with external threads c. The upper and lower ends of the sampling container 31 are respectively threadedly connected to the corresponding short tube 34. Here, the short tube 34 serves as a transition connector. When the long tube 2 is connected to the short tube 34, it can be directly connected by insertion, and then the short tube 34 and the long tube 2 are completely fixed from the side by bolts.
[0045] This invention features an axial through-hole a on the ring wall of a sampling container 31, several radial holes b on the outer side of the ring wall that communicate with the inner cavity of the sampling container 31, and a suction pipe 33 on the cover 32. Groundwater can enter the inner cavity of the sampling container 31 through the radial holes b, and the suction pipe 33 can be used to extract the water sample into the inner cavity. The structure is simple, and the long pipe 2 is connected to the short pipe 34 at the end of the sampling container 31 for fixation. It has low manufacturing cost, is easy to transport, and can be assembled at the construction site before being installed underground, without requiring a large amount of manpower and resources.
[0046] As a further preferred embodiment of this utility model, the sampling container 31 has internal threads d at both ends of its opening, and the cover 32 has external threads c that form a threaded connection with the internal threads d of the sampling container 31. A cover 32 with a suction tube 33 is installed at one end of the sampling container 31, and a cover 32 without a suction tube 33 is installed at the other end of the sampling container 31. Alternatively, it can be an open-closed structure, forming a storage chamber inside the sampling container 31. This utility model preferably uses a storage chamber of at least 100 mL to store water before sampling, meeting the requirements for testing common water chemical parameters.
[0047] like Figure 4aAs shown, the lid 32 located at the upper end of the sampling container 31 has a suction tube 33. One end of the suction tube 33 extends out of the upper surface of the lid, and the other end extends to the bottom of the inner cavity of the sampling container 31. That is, the suction tube 33 here is a single flexible or rigid tube structure; of course, the suction tube 33 can also be as follows: Figure 4b As shown in the structure, the suction tube 33 includes a tube connector 331 disposed on both sides of the cover 32 and a suction tube 332 that is inserted into the tube connector 331 on the inner side of the cover 32. The lower end of the suction tube 332 extends to the bottom of the inner cavity of the sampling container 31, and the two tube connectors 331 are connected.
[0048] Of course, this invention can also place the suction tube 33 on the cap 32 at the lower opening of the sampling container 31, while the upper opening of the sampling container 31 is directly sealed by a cap without the suction tube 33. In this case, the suction tube 33 is a pipe connector 331 located on the outside of the cap 32. This pipe connector 331 extends from the lower end of the sampling container 31 into the inner cavity of the sampling container 31. The specific cap structure is as follows: Figure 4c As shown.
[0049] This utility model has at least 10 axial through holes a on the ring wall of the sampling container 31, such as Figure 2 As shown, 20 axial through holes a are formed on the ring wall, and 4 rows of radial holes b are provided, combined with Figure 2 and Figure 3 As shown, the radial hole b is preferably set on the generatrix of the sampling container 31, and is set at corresponding positions at the front and rear and left and right, but it is not limited to this. Figure 2 The radial hole b distribution shown can be used to set more rows of radial holes, but the specific distribution design will not be described in detail here.
[0050] like Figure 7 and Figure 8 As shown, this utility model also provides a multi-depth groundwater sampling system. The system includes at least 10 sampling hoses 1, multiple long tubes 2, and samplers 3. One end of each long tube 2 is inserted into a short tube 34 at one end of one sampler 3, and the other end of the long tube 2 is inserted into a short tube 34 at one end of another sampler 3, such as... Figure 6 As shown, the length of the sampler 3 after being connected to the long tube 2 is preferably less than 1m. Of course, the long tube 2 can be made longer according to the actual situation, so that the length of the long tube 2 is greater than 1m. Each sampling hose 1 passes through the axial through hole a on each sampler 3 from top to bottom and is connected to the suction tube 33 located at the corresponding depth.
[0051] Before being placed underground, a process is performed as follows: Figure 7The connection between the long tube 2, the sampling hose 1 and the sampler 3 is shown. After the connection is completed, the long tube 2 is inserted into the short tube 34 on the sampler 3 one by one. The long tube 2 and the short tube 34 are fixed from the side with bolts, and then extended to the predetermined underground position one by one. For example, the sampling container 31 is equipped with 20 axial holes. 21 sampling hoses 1, 21 long tubes 2, and 21 samplers 3 are prepared. The 21 long tubes 2 and 21 samplers 3 are connected in series to form a whole. Each sampling hose 1 passes through an axial hole on the sampler 3. If numbered sequentially from top to bottom, the first sampling hose is connected to the suction tube of the first sampler. The remaining 20 sampling hoses pass through the corresponding axial holes on the first sampler. Then, one of the sampling hoses is connected to the suction tube of the second sampler, and the remaining 19 sampling hoses pass through the corresponding axial holes on the second sampler. Then, one of the sampling hoses is connected to the suction tube of the third sampler, and the remaining 18 sampling hoses pass through the corresponding axial holes on the third sampler. Then, one of the sampling hoses is connected to the suction tube of the fourth sampler, and so on, until the last remaining sampling hose is connected to the suction tube of the twenty-first sampler, completing the piping connection of the entire system. This allows for sampling and testing at 21 water depths. Each sampling hose can be distinguished by a different color, and can also be marked with numbers or text. Since the entire system contains no metal, it will not affect water sample testing. Longer pipes can be inexpensive pipes supplied by local hardware stores, enabling groundwater sampling at depths up to 21.
[0052] like Figure 8 As shown, a multi-depth groundwater sampling system is placed in the well. The sampling container 31 collects water entering from the radial hole b. The sampling hose 1, which passes through each axial hole, reaches the sampler 3 at the corresponding depth and is connected to the corresponding suction pipe 33. The staff can connect each sampling hose to the sampler on the ground and use the suction pump to extract the water sample from the sampling container 31 at the corresponding depth.
[0053] This system can be installed in different geological environments. Water in the underground aquifer 4 permeates into the sampler at the corresponding depth for collection. Compared with conventional sampling wells, the multi-depth sampling system provided by this invention has lower sampling costs and can provide different groundwater quality information.
[0054] Any aspects not described herein are applicable to the prior art.
[0055] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.
Claims
1. A groundwater sampler, the sampler (3) comprising a hollow cylindrical sampling container (31) and a lid (32) sealed at the upper and lower openings of the sampling container (31), characterized in that, The sampling container (31) has several axial through holes (a) formed on its annular wall. The axial through holes (a) extend out of both ends of the sampling container (31). A suction tube (33) communicating with the inner cavity of the sampling container (31) is installed on one of the covers (32). The sampling container (31) also has several radial holes (b) communicating with its inner cavity.
2. The groundwater sampler according to claim 1, characterized in that, The sampler (3) is connected to a short tube (34) at both ends. One end of the short tube (34) is provided with an internal thread (d). The upper and lower ends of the sampling container (31) are provided with external threads (c). The upper and lower ends of the sampling container (31) are respectively connected to the corresponding short tube (34) in a threaded connection.
3. The groundwater sampler according to claim 1, characterized in that, The sampling container (31) has internal threads (d) at both ends of the opening, and the cover (32) has external threads (c) that form a threaded connection with the internal threads (d) of the sampling container (31).
4. The groundwater sampler according to claim 3, characterized in that, The suction tube (33) is disposed on the lid (32) at the upper opening of the sampling container (31). The suction tube (33) includes a tube connector (331) disposed on both sides of the lid (32) and a suction tube (332) inserted into the tube connector (331) on the inner side of the lid (32). The lower end of the suction tube (332) extends to the bottom of the inner cavity of the sampling container (31), and the two tube connectors (331) are connected.
5. The groundwater sampler according to claim 3, characterized in that, The suction tube (33) is disposed on the cover (32) at the lower opening of the sampling container (31). The suction tube (33) is a pipe connector disposed on the outside of the cover (32). The suction tube (33) is connected to the inner cavity of the sampling container (31).
6. The groundwater sampler according to any one of claims 1-5, characterized in that, The sampling container (31) has at least 10 axial through holes (a) on its annular wall.
7. The groundwater sampler according to claim 1, characterized in that, The radial holes (b) on the ring wall of the sampling container (31) are arranged at intervals along its generatrix.
8. The groundwater sampler according to claim 7, characterized in that, The sampling container (31) has multiple rows of radial holes (b) on its annular wall.
9. A multi-depth groundwater sampling system, the system comprising at least 10 sampling hoses (1), multiple long pipes (2), and samplers (3), wherein each of the long pipes (2) and the samplers (3) are alternately connected in series to form a sampling pipeline, characterized in that, The sampler (3) is the sampler according to any one of claims 1-8. One end of the long tube (2) is detachably fixedly connected to one end of the sampler (3), and the other end of the long tube (2) is detachably fixedly connected to one end of the adjacent sampler (3). Each sampling hose (1) passes through the axial through hole (a) on each sampler (3) from top to bottom and is connected to the suction tube (33) of the sampler (3) at the corresponding depth.
10. The multi-depth groundwater sampling system according to claim 9, characterized in that, Multiple long tubes (2) are arranged in equal lengths. The two ends of the long tubes (2) are respectively connected to the short tubes (34) on the sampler (3) by insertion, and the long tubes (2) and the short tubes (34) are fixed from the side by fastening connectors.