A groundwater layered sampling device

Abstract

The utility model discloses a kind of groundwater layered sampling device, comprising: fixed platform, fixed platform is fixed on the submergence equipment of groundwater collection;Four sampling cylinder components, sampling cylinder component is arranged in the inside of fixed platform, sampling cylinder component is used for groundwater sampling;Water inlet switching mechanism, water inlet switching mechanism is rotatably connected at the bottom of fixed platform;The utility model is rotated to be aligned with the liquid inlet of certain sampling container when the water inlet hole on the angle-adjusting turntable is rotated, the groundwater of this layer position will flow into sampling container through water inlet hole and liquid inlet, realize the sampling of this layer groundwater, since water inlet hole is arranged on the circumferential track formed by the liquid inlet of four sampling containers, different sampling containers can be sequentially water inlet controlled by rotating angle-adjusting turntable, so as to realize the layered sampling of different depth groundwater, accurately obtain each depth groundwater sample.

Description

Technical Field

[0001] This utility model relates to the field of stratified sampling technology, specifically a groundwater stratified sampling device. Background Technology

[0002] In fields such as groundwater pollution monitoring and hydrogeological research, obtaining groundwater samples at different depths is a crucial step in data analysis and assessment of the groundwater environment. Groundwater samples obtained through stratified sampling help researchers gain a clearer understanding of the water quality characteristics at different depths, laying the foundation for developing scientific and reasonable water resource protection and utilization strategies.

[0003] Currently, traditional groundwater stratified sampling techniques mostly employ single sampling tube structures such as Bayler tubes. When collecting water samples at different depths using a single sampling tube, a new sampling tube needs to be replaced after each collection before diving to other depths to perform the sampling operation. This makes the stratified sampling operation cumbersome. Furthermore, during the lifting process of the Bayler tube, water inside the tube exchanges with water in the well, making it difficult to avoid mixing of water from different layers. As a result, the collected samples cannot accurately reflect the water quality at a specific depth, affecting the accuracy of data analysis. Therefore, a groundwater stratified sampling device is needed to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to provide a groundwater stratification sampling device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a groundwater stratification sampling device, comprising:

[0006] A fixed platform, which is fixed to the submersible equipment for groundwater collection;

[0007] Four sampling tube assemblies are installed inside the fixed platform and are used for groundwater sampling.

[0008] A water inlet switching mechanism is rotatably connected to the bottom of the fixed platform. The water inlet switching mechanism is used to control the progress of the layered sampling of the sampling tube assembly.

[0009] Preferably, the sampling tube assembly includes a positioning shell, an assembly groove is provided on the upper end face of the fixing platform, the positioning shell is fixed in the assembly groove of the fixing platform, and an internal threaded sleeve is fixed on the upper end of the positioning shell, and a sampling container for collecting groundwater is inserted through the internal thread of the internal threaded sleeve.

[0010] Preferably, the sampling container has a locking thread on its side surface, and the sampling container is connected to the internal thread sleeve through the locking thread. An anti-slip hand-operated block is fixed at the upper end of the sampling container.

[0011] Preferably, the sampling container has a liquid inlet at its lower end, and the lower port of the sampling container and the lower port of the positioning shell are on the same horizontal plane.

[0012] Preferably, the water inlet switching mechanism includes an angle adjustment turntable and a direction adjustment rod, the direction adjustment rod being rotatably connected inside the fixed platform, and the angle adjustment turntable being fixed to the lower end of the direction adjustment rod.

[0013] Preferably, a sealing gasket is fixed to the upper end face of the angle-adjusting turntable, and water inlet holes are provided on the upper end faces of both the angle-adjusting turntable and the sealing gasket.

[0014] Preferably, a rotating ring is fixedly fitted onto the surface of the steering rod, and a rotating groove is provided inside the fixed platform, with the rotating ring rotatably connected in the rotating groove of the fixed platform.

[0015] Preferably, the water inlet is located on the circumferential trajectory formed by the liquid inlets of the four sampling containers.

[0016] This invention provides a groundwater stratified sampling device, which has the following advantages compared with the prior art:

[0017] With the established water inlet switching mechanism and sampling cylinder assembly, when the water inlet hole on the angle-adjusting turntable is rotated to align with the liquid inlet of a certain sampling container, the groundwater at that layer will flow into the sampling container through the water inlet hole and liquid inlet, thus achieving the sampling of groundwater at that layer. Since the water inlet hole is set on the circumferential trajectory formed by the liquid inlets of the four sampling containers, the water inlet of different sampling containers can be controlled sequentially by rotating the angle-adjusting turntable, thereby achieving stratified sampling of groundwater at different depths, accurately obtaining groundwater samples at each depth, and providing reliable data support for subsequent water quality analysis, hydrological research, etc.

[0018] With the sampling tube assembly, multiple sampling containers are clamped onto the fixed platform by screwing them in, which has the advantages of easy assembly and disassembly and independent replacement. After sampling, researchers can easily unscrew the inverted sampling container for subsequent analysis using the anti-slip hand screw. Attached Figure Description

[0019] Figure 1 This is a perspective view of the overall structure of this utility model;

[0020] Figure 2 This is a perspective view of the fixed platform structure of this utility model;

[0021] Figure 3 This is a three-dimensional view of the sampling tube assembly structure of this utility model;

[0022] Figure 4 This is a three-dimensional view of the liquid inlet structure of this utility model;

[0023] Figure 5 This is a perspective view of the rotating ring structure of this utility model;

[0024] Figure 6 This is a perspective view of the rotating groove structure of this utility model;

[0025] Figure 7 This is a three-dimensional view of the sampling container structure of this utility model.

[0026] In the diagram: 1. Fixed platform; 2. Sampling tube assembly; 3. Water inlet switching mechanism; 4. Angle adjustment turntable; 5. Water inlet hole; 6. Sealing gasket; 7. Direction adjustment rod; 8. Rotating ring; 9. Rotating groove; 10. Assembly groove; 11. Positioning shell; 12. Internal threaded sleeve; 13. Sampling container; 14. Locking thread; 15. Anti-slip hand crank block; 16. Liquid inlet. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-7 This utility model provides a groundwater stratification sampling device, comprising:

[0029] Fixed platform 1, fixed platform 1 is fixed to the submersible equipment for groundwater collection;

[0030] Four sampling tube assemblies 2 are installed inside the fixed platform 1. The sampling tube assemblies 2 are used for groundwater sampling. Each sampling tube assembly 2 includes a positioning shell 11. An assembly groove 10 is provided on the upper end face of the fixed platform 1. The positioning shell 11 is installed and fixed in the assembly groove 10 of the fixed platform 1. An internal threaded sleeve 12 is fixed on the upper end of the positioning shell 11. A sampling container 13 for collecting groundwater is installed through the internal thread of the internal threaded sleeve 12. A locking thread 14 is provided on the side surface of the sampling container 13. The sampling container 13 is threadedly connected to the internal threaded sleeve 12 through the locking thread 14. An anti-slip hand-turning block 15 is fixed on the upper end of the sampling container 13.

[0031] Since the positioning shell 11 in the sampling tube assembly 2 is inserted and fixed in the assembly slot 10 of the fixed platform 1, and is threadedly connected to the sampling container 13 through the internal thread sleeve 12, this design makes multiple sampling containers 13 easy to disassemble and replace and can be replaced independently. After sampling, researchers can easily unscrew the inverted sampling container 13 for subsequent analysis by using the anti-slip hand screw 15.

[0032] The water inlet switching mechanism 3 is rotatably connected to the bottom of the fixed platform 1. The water inlet switching mechanism 3 is used to control the progress of the sampling tube assembly 2 for layered sampling. The water inlet switching mechanism 3 includes an angle adjustment turntable 4 and a direction adjustment rod 7. The direction adjustment rod 7 is rotatably connected to the inside of the fixed platform 1. The angle adjustment turntable 4 is fixed to the lower end of the direction adjustment rod 7. A rotating ring 8 is fixedly fitted on the surface of the direction adjustment rod 7. A rotating groove 9 is opened inside the fixed platform 1. The rotating ring 8 is rotatably connected in the rotating groove 9 of the fixed platform 1. The water inlet hole 5 is set on the circumferential trajectory formed by the liquid inlets 16 of the four sampling containers 13.

[0033] When the water inlet 5 on the angle adjustment turntable 4 is rotated to align with the liquid inlet 16 of a certain sampling container 13, the groundwater at that layer will flow into the sampling container 13 through the water inlet 5 and the liquid inlet 16, thus achieving the sampling of groundwater at that layer. Since the water inlet 5 is set on the circumferential trajectory formed by the liquid inlets 16 of the four sampling containers 13, the water inlet of different sampling containers 13 can be controlled sequentially by rotating the angle adjustment turntable 4, thereby achieving stratified sampling of groundwater at different depths and accurately obtaining groundwater samples at each depth.

[0034] It is worth noting that the sampling container 13 is provided with a liquid inlet 16 at the lower end. The lower port of the sampling container 13 and the lower port of the positioning shell 11 are on the same horizontal plane. A sealing gasket 6 is fixed on the upper end face of the angle adjustment turntable 4. Both the upper end face of the angle adjustment turntable 4 and the sealing gasket 6 are provided with water inlet holes 5.

[0035] The sealing gasket 6 on the upper surface of the angle-adjusting turntable 4 provides a good seal for the sampling container 13, thereby reducing the problem of groundwater leakage at the inlet 16 of the sampling container 13 during the rotation and adjustment of the angle-adjusting turntable 4.

[0036] In scenarios such as groundwater pollution monitoring and hydrogeological research, accurately obtaining groundwater samples at different depths is crucial for data analysis. Based on this, a groundwater stratified sampling device was developed, which has the following working process:

[0037] Before use, fix the platform 1 to a groundwater sampling device such as a drilling rig. As the device descends into the aquifer, it begins stratified sampling.

[0038] When it is necessary to collect groundwater from a certain layer, the directional rotating rod 7 in the water inlet switching mechanism 3 is rotated. Since the rotating ring 8 fixed on the surface of the directional rotating rod 7 cooperates with the rotating groove 9 inside the fixed platform 1, it drives the angle-adjusting turntable 4 to rotate stably at the bottom of the fixed platform 1. When the water inlet hole 5 on the angle-adjusting turntable 4 rotates to align with the liquid inlet 16 of a certain sampling container 13, the groundwater from that layer will flow into the sampling container 13 through the water inlet hole 5 and the liquid inlet 16, thus achieving the sampling of groundwater from that layer. Since the water inlet hole 5 is set on the circumferential trajectory formed by the liquid inlets 16 of the four sampling containers 13, the water inlet of different sampling containers 13 can be controlled sequentially by rotating the angle-adjusting turntable 4, thereby achieving the sampling of groundwater at different depths. Layered sampling accurately acquires groundwater samples at various depths, providing reliable data support for subsequent water quality analysis and hydrological research. After one sampling container 13 completes its sampling, the angle adjustment turntable 4 is rotated to align the inlet 5 with the liquid inlet 16 of the next sampling container 13, allowing for sampling of the next layer of groundwater. Sampling can be stopped when the inlet 5 of the angle adjustment turntable 4 is rotated between the liquid inlets 16 of adjacent sampling containers 13, effectively improving the efficiency and accuracy of groundwater sampling. The sealing gasket 6 on the upper surface of the angle adjustment turntable 4 provides a good seal for the sampling containers 13, reducing the risk of groundwater leakage at the liquid inlet 16 of the sampling containers 13 during the rotation and adjustment of the angle adjustment turntable 4.

[0039] Since the positioning shell 11 in the sampling tube assembly 2 is inserted and fixed in the assembly slot 10 of the fixed platform 1, and is threadedly connected to the sampling container 13 through the internal thread sleeve 12, this design makes multiple sampling containers 13 easy to disassemble and replace and can be replaced independently. After sampling, researchers can easily unscrew the inverted sampling container 13 for subsequent analysis by using the anti-slip hand screw 15.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Although embodiments of this utility model have been shown and described, this does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model. Regarding the embodiments of this utility model, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A groundwater stratified sampling device, characterized in that, include: A fixed platform (1) is fixed to the submersible equipment for groundwater collection; Four sampling tube assemblies (2) are installed inside the fixed platform (1) and are used for groundwater sampling. Water inlet switching mechanism (3) is rotatably connected to the bottom of the fixed platform (1). The water inlet switching mechanism (3) is used to control the progress of the sampling tube assembly (2) for layered sampling.

2. The groundwater stratified sampling device according to claim 1, characterized in that: The sampling tube assembly (2) includes a positioning shell (11), and an assembly groove (10) is provided on the upper end face of the fixed platform (1). The positioning shell (11) is inserted and fixed in the assembly groove (10) of the fixed platform (1). An internal thread sleeve (12) is fixed on the upper end of the positioning shell (11), and a sampling container (13) for collecting groundwater is inserted through the internal thread of the internal thread sleeve (12).

3. The groundwater stratified sampling device according to claim 2, characterized in that: The sampling container (13) has a locking thread (14) on its side surface. The sampling container (13) is threadedly connected to the inner thread sleeve (12) through the locking thread (14). The upper end of the sampling container (13) is fixed with an anti-slip hand-turning block (15).

4. The groundwater stratified sampling device according to claim 3, characterized in that: The sampling container (13) is provided with a liquid inlet (16) at its lower end, and the lower port of the sampling container (13) and the lower port of the positioning shell (11) are on the same horizontal plane.

5. A groundwater stratified sampling device according to claim 1, characterized in that: The water inlet switching mechanism (3) includes an angle adjustment turntable (4) and a direction adjustment rod (7). The direction adjustment rod (7) is rotatably connected inside the fixed platform (1), and the angle adjustment turntable (4) is fixed at the lower end of the direction adjustment rod (7).

6. A groundwater stratified sampling device according to claim 5, characterized in that: A sealing gasket (6) is fixed on the upper end face of the angle adjustment turntable (4), and water inlet holes (5) are opened on the upper end faces of both the angle adjustment turntable (4) and the sealing gasket (6).

7. A groundwater stratified sampling device according to claim 6, characterized in that: The surface of the steering rod (7) is fitted with a rotating ring (8), and the interior of the fixed platform (1) is provided with a rotating groove (9). The rotating ring (8) is rotatably connected in the rotating groove (9) of the fixed platform (1).

8. A groundwater stratified sampling device according to claim 7, characterized in that: The water inlet (5) is set on the circular trajectory formed by the liquid inlets (16) of the four sampling containers (13).

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