A groundwater sampling device for hydrogeology and engineering geology

Abstract

This invention discloses a groundwater sampling device for hydrogeology and engineering geology, comprising a drilling mechanism, a hollow fixed shaft fixedly connected to the top of the drilling mechanism, a first sleeve fixedly connected to the fixed shaft, and a second sleeve sliding vertically relative to the fixed shaft. Both the first and second sleeves have several vertically arranged and fixedly connected fixed blocks. A first elastic rod fixedly connected between the mutually mirror-distributed fixed blocks is provided. Both the first and second sleeves have multiple sets of movable components, each including several vertically arranged movable blocks. This device enables in-situ sampling under slightly destructive geological conditions, unaffected by the free flow of water in the soil, and simultaneously achieves a dynamic balance between soil water sampling and maintaining the original water-bearing state in the geology. It improves efficiency during large-scale sampling and enables linear and zoned sampling.

Description

Technical Field

[0001] This invention relates to the field of geology, and in particular to a groundwater sampling device for hydrogeology and engineering geology. Background Technology

[0002] Geological condition testing in geotechnical engineering construction and related fields requires sampling of groundwater of different types and in different areas. This allows for testing at any point in different geological conditions based on water quality. Consequently, within the same area, soil samples from different depths and locations are taken to the surface for water separation. This high-frequency and long-term sampling process often leads to changes in underground geological conditions and makes it impossible to achieve a dynamic balance between soil water sampling and maintaining the original state of the geological conditions. Existing groundwater sampling and testing equipment, especially for sampling water in soils with high water content, often results in inaccurate sampling due to the free flow of water in the soil. It is also prone to clogging of the sampling port, hindering continuous sampling. In large-scale sampling, the efficiency is extremely low, and linear and zoned sampling cannot be achieved during the sampling process. Summary of the Invention

[0003] To address the aforementioned existing problems, the technical problem to be solved by this invention is to enable in-situ on-site sampling under micro-destructive geological conditions, unaffected by the free flow of water in the soil, while simultaneously achieving a dynamic balance between soil water sampling and maintaining the original state of water-bearing in the geology, improving efficiency in large-scale sampling processes, and enabling linear and zoned sampling—a groundwater sampling device for hydrogeology and engineering geology.

[0004] This invention provides a groundwater sampling device for hydrogeological and engineering geological applications, comprising a drilling mechanism. The top of the drilling mechanism has a hollow fixed shaft fixedly connected to it. A first sleeve is fixedly connected to the fixed shaft, and a second sleeve slides vertically relative to it. Both the first and second sleeves have several vertically arranged and fixedly connected fixed blocks. A first elastic rod is fixedly connected between the mirror-image fixed blocks. Both the first and second sleeves have multiple sets of movable components. Each movable component includes several vertically arranged movable blocks, each containing a first magnet. A second elastic rod is fixedly connected between the mirror-image movable blocks. An elastic membrane is provided between the first and second elastic rods, and also between the second elastic rods. The outermost movable block has a side surface with a... The elastic layer that adheres to the fixing block has several horizontally arranged elastic wires at the top and bottom of the elastic membrane. The fixing shaft has a rotatable magnetic attraction mechanism inside, which attracts the elastic wires and the first magnet respectively. The drilling mechanism has an outer cylinder that is aligned with and adheres to it at the top. The outer cylinder has a first telescopic mechanism fixedly connected to it at the top. The fixing shaft has a second telescopic mechanism inside, which is connected to the second sleeve. The fixing shaft also has several first connecting pipes for exporting sample water and several second connecting pipes for importing replacement water. The first connecting pipes pass through the second sleeve, and the second connecting pipes pass through the first sleeve. The first telescopic mechanism, the second telescopic mechanism, and the drilling mechanism are all electrically connected to an external power source. The first telescopic mechanism, the second telescopic mechanism, and the drilling mechanism are all used to receive external control signals.

[0005] Furthermore, the drilling mechanism includes a drill bit and a first drive motor. The first drive motor is fixedly connected to the fixed shaft, and the output end of the first drive motor is fixedly connected to the drill bit. The drill bit is provided with an outer cylinder fixedly connected thereto, and an annular ring is provided at the top of the outer cylinder. The annular ring abuts against the fixed shaft.

[0006] Furthermore, the magnetic attraction mechanism includes an inner rotating shaft, on the surface of which are embedded several second magnets. Coils are wound around the second magnets. The second magnets are aligned with and attracted to the elastic iron wire and the first magnet, respectively. A second drive motor is provided at the top of the inner rotating shaft. The output end of the second drive motor is fixedly connected to the top of the inner rotating shaft. The second drive motor and the coil are electrically connected to an external power supply.

[0007] Furthermore, the surface of the inner rotating shaft is provided with a groove, and a ball bearing is provided in the groove, the ball bearing abutting against the inner wall of the fixed shaft.

[0008] Furthermore, the first telescopic mechanism includes a first electric telescopic rod, the telescopic end of which is fixedly connected to the top of the outer cylinder, and the first electric telescopic rod is electrically connected to an external power source.

[0009] Furthermore, the second telescopic mechanism includes a second electric telescopic rod, the telescopic end of which is fixedly connected to the top of the second sleeve, and the second electric telescopic rod is electrically connected to an external power source.

[0010] Furthermore, it also includes a fixed base, the bottom of which is fixedly connected to the first electric telescopic rod, the second telescopic mechanism and the second drive motor respectively.

[0011] Furthermore, the surface of the fixed shaft is provided with a longitudinal groove, and the inner wall of the second sleeve is provided with a protrusion, which slides relative to the groove.

[0012] Furthermore, both the first and second connecting pipes are equipped with flow meters, and the flow meters are electrically connected to an external power supply.

[0013] Furthermore, the drill bit is equipped with a position sensor, which is electrically connected to an external power supply and is also connected to external signals.

[0014] The beneficial effects of this invention are as follows:

[0015] This invention discloses a groundwater sampling device for hydrogeological and engineering geological applications. The drilling mechanism is inserted into the ground, continuously drilling the device into the soil until a preset soil depth is reached. The outer cylinder separates from the drilling mechanism through the contraction of the first telescopic mechanism, exposing the movable component, the fixed block, and the first elastic rod to the soil and into contact with the soil-water mixture. Then, the second telescopic mechanism extends downwards, causing the second sleeve to slide downwards to its limit and compress the first and second elastic rods, thereby changing the first and second elastic rods from a vertical state to an arc-shaped state. During the morphological change, the soil around the membrane is pushed aside. Then, through the rotation of the magnetic attraction mechanism, the elastic wire and the first magnet that are attracted to it move together, thereby opening the elastic membrane and wrapping the soil in that area until the other side of the first elastic rod abuts against the other side of the second elastic rod and the elastic layer on the movable block abuts against the fixed block. The adsorption force between the elastic wire and the magnetic attraction mechanism tightly adheres the elastic membrane to the first sleeve and the second sleeve respectively. Thus, the soil and water mixture in that depth area is completely wrapped by the elastic wire, elastic membrane, movable block, fixed block, elastic layer, first elastic rod and second elastic rod, and isolated from the outside. Effective isolation is achieved by slightly stretching the first and second elastic rods upwards through the upward contraction of the second telescopic mechanism, which effectively compresses the enclosed soil and water mixture and discharges it through the first connecting pipe. The second connecting pipe, in turn, allows the same amount of water to be injected into the area between the elastic wire, elastic membrane, movable block, fixed block, elastic layer, first elastic rod, and second elastic rod, thereby replacing the water in the soil. This ensures the dynamic balance of water sampling and maintaining the original water content in the geology, preventing frequent water exchange between different areas from affecting the accuracy of the overall sampling work. Furthermore, the magnetic attraction mechanism's reset allows the elastic wire, elastic membrane, movable block, and fixed block to be simultaneously repositioned. The block, the first elastic rod, and the second elastic rod are reset, and then the second telescopic mechanism and the first telescopic mechanism can be controlled to reset, and drilling continues to the next predetermined depth. By repeating the above operation and entering different depths, corresponding water sample collection can be achieved. This eliminates the need to collect soil and water mixtures from the geology to the ground, thus enabling in-situ collection under minimal geological conditions. Especially in large-scale soil water sample collection, it can effectively improve sample collection efficiency without transporting soil and water mixtures to the ground, while greatly reducing the damage to soil distribution caused by conventional sampling methods, avoiding drastic changes in geological conditions caused by multi-point damage, and allowing entry into different depth areas as needed.This enables linearization and partitioned sampling. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a partially cut-open front view of a groundwater sampling device for hydrogeology and engineering geology according to the present invention.

[0018] Figure 2 This is a cross-sectional view of a partial structure of a groundwater sampling device for hydrogeology and engineering geology according to the present invention;

[0019] Figure 3 This is a top view of the inner rotating shaft of a groundwater sampling device for hydrogeology and engineering geology according to the present invention.

[0020] Figure 4 This is a top view of the fixed axis of a groundwater sampling device for hydrogeology and engineering geology according to the present invention;

[0021] Figure 5 This invention relates to a groundwater sampling device for hydrogeological and engineering geological applications. Figure 1 A magnified view of a portion of point A.

[0022] In the diagram, 1 is a fixed shaft, 2 is the first sleeve, 3 is the second sleeve, 4 is a fixed block, 5 is the first elastic rod, 6 is a movable block, 7 is the first magnet, 8 is the second elastic rod, 9 is an elastic membrane, 10 is an elastic layer, 11 is an elastic wire, 12 is the outer cylinder, 13 is the first connecting pipe, 14 is the second connecting pipe, 15 is a drill bit, 16 is the first drive motor, 17 is the outer cylinder, 18 is an annular ring, 19 is the inner rotating shaft, 20 is the second magnet, 21 is a coil, 22 is the second drive motor, 23 is a groove, 24 is a ball bearing, 25 is the first electric telescopic rod, 26 is the second electric telescopic rod, 27 is a sliding groove, 28 is a protruding strip, 29 is a flow meter, 30 is a position sensor, and 31 is a fixed base. Detailed Implementation

[0023] To better understand the technical content of this invention, specific embodiments are provided below, and the invention will be further described in conjunction with the accompanying drawings.

[0024] See Figures 1 to 5This invention provides a groundwater sampling device for hydrogeological and engineering geological applications, comprising a drilling mechanism. The top of the drilling mechanism has a hollow fixed shaft 1 fixedly connected to it. A first sleeve 2 is fixedly connected to the fixed shaft 1, and a second sleeve 3 is fixedly slidably sliding relative to it. Both the first sleeve 2 and the second sleeve 3 have several vertically arranged and fixedly connected fixed blocks 4. A first elastic rod 5 is fixedly connected between the mirror-distributed fixed blocks 4. Both the first sleeve 2 and the second sleeve 3 have multiple sets of movable components. Each movable component includes several vertically arranged movable blocks 6, each movable block 6 containing a first magnet 7. The movable blocks 6 are mirror-distributed... A second elastic rod 8 is fixedly connected to the first elastic rod 5. An elastic membrane 9 is provided between the first elastic rod 5 and the second elastic rod 8. The second elastic rod 8 is also provided with the elastic membrane 9. The elastic membrane 9 can be made of transparent material. The side of the outermost movable block 6 is provided with an elastic layer 10 for attaching to the fixed block 4. Several horizontally arranged elastic wires 11 are provided at the top and bottom of the elastic membrane 9. The fixed shaft 1 is provided with a rotatable magnetic attraction mechanism inside. The magnetic attraction mechanism is attracted to the elastic wires 11 and the first magnet 7 respectively. The top of the drilling mechanism is provided with an outer cylinder 12 that is aligned with and attached to it. The top of the outer cylinder 12 is provided with a first telescopic mechanism fixedly connected to it. The fixed shaft 1 is provided with... A second telescopic mechanism is provided, which is connected to the second sleeve 3. The fixed shaft 1 also contains several first connecting pipes 13 for exporting sample water and several second connecting pipes 14 for importing replacement water. The first connecting pipes 13 pass through the second sleeve 3, and the second connecting pipes 14 pass through the first sleeve 2. The first telescopic mechanism, the second telescopic mechanism, and the drilling mechanism are all electrically connected to an external power source. These mechanisms are used to receive external control signals, insert the drilling mechanism into the ground, and continuously drill the device into the soil. Drilling stops when a preset soil depth is reached. The contraction of the first telescopic mechanism causes the outer cylinder 1 to... 2. Separating from the drilling mechanism, the movable component, fixed block 4, and first elastic rod 5 are exposed to the soil and come into contact with the soil and water mixture. Then, through the downward extension of the second telescopic mechanism, the second sleeve 3 slides downward to its limit and squeezes the first elastic rod 5 and the second elastic rod 8, causing the first elastic rod 5 and the second elastic rod 8 to change from a vertical state to an arc shape. During the shape change of the first elastic rod 5 and the second elastic rod 8, the soil around them is squeezed out. Then, through the rotation of the magnetic attraction mechanism, the elastic wire 11 and the first magnet 7 that are attracted to each other move together, thereby opening the elastic membrane 9 and wrapping the soil in that area.Until the other side of the first elastic rod 5 abuts against the other side of the second elastic rod 8, and the elastic layer 10 on the movable block 6 abuts against the fixed block 4, the elastic membrane 9 is tightly adhered to the first sleeve 2 and the second sleeve 3 by the adsorption force between the elastic wire 11 and the magnetic attraction mechanism. This ensures that the soil and water mixture in the depth area is completely enclosed by the elastic wire 11, elastic membrane 9, movable block 6, fixed block 4, elastic layer 10, first elastic rod 5, and second elastic rod 8, effectively isolating it from the outside. The upward contraction of the second telescopic mechanism slightly stretches the first elastic rod 5 and the second elastic rod 8, effectively squeezing the enclosed soil and water mixture and discharging it through the first connecting pipe 13. The second connecting pipe 14 allows an equal amount of water to be injected into the area between the elastic wire 11, elastic membrane 9, movable block 6, fixed block 4, elastic layer 10, first elastic rod 5, and second elastic rod 8, thereby achieving water placement in the soil. This method ensures the dynamic balance of soil water sampling and maintaining the original water content in the geology, avoiding frequent water exchange in different areas that could affect the accuracy of the overall sampling work. Furthermore, the reset of the magnetic suction mechanism simultaneously resets the elastic wire 11, elastic membrane 9, movable block 6, first elastic rod 5, and second elastic rod 8. Then, the reset of the second and first telescopic mechanisms can be controlled, allowing drilling to continue to the next predetermined depth. By repeating the above operations and entering different depths, corresponding water sample collection can be achieved. This eliminates the need to collect soil and water mixtures from the geology to the surface, enabling in-situ sampling under minimally invasive geological conditions. Especially in large-scale soil water sample collection, it effectively improves sample collection efficiency without transporting the soil and water mixture to the surface, while significantly reducing the damage to soil distribution caused by conventional sampling methods, avoiding drastic changes in geological conditions due to multi-point damage. Moreover, it allows entry into different depth areas as needed, thus achieving linear and zoned sampling.

[0025] Specifically, the drilling mechanism includes a drill bit 15 and a first drive motor 16. The first drive motor 16 is fixedly connected to the fixed shaft 1, and the output end of the first drive motor 16 is fixedly connected to the drill bit 15. The drill bit 15 is provided with an outer cylinder 17 fixedly connected thereto. An annular ring 18 is provided at the top inside the outer cylinder 17. The annular ring 18 abuts against the fixed shaft 1. Through the cooperation of the drill bit 15 and the first drive motor 16, corresponding drilling work can be performed according to actual needs until the device is moved to the required depth. Through the action of the annular ring 18, the entry of mud and sand into the outer cylinder 17 during drilling can be reduced, thus reducing the impact on the first drive motor 16.

[0026] Specifically, the magnetic attraction mechanism includes an inner rotating shaft 19, on the surface of which are embedded several second magnets 20. A coil 21 is wound around each of the second magnets 20. The second magnets 20 are aligned with and attracted to the elastic wire 11 and the first magnet 7, respectively. A second drive motor 22 is located at the top of the inner rotating shaft 19. The output end of the second drive motor 22 is fixedly connected to the top of the inner rotating shaft 19. The second drive motor 22 and the coil 21 are electrically connected to an external power source. Through the cooperation of the inner rotating shaft 19 and the second drive motor 22, when the second drive motor 22 rotates, the rotation of the inner rotating shaft 19 causes the second magnet 20 to attract the corresponding first magnet 7, thereby ensuring that the movable block 6 and the elastic wire 11 can follow the movement. Simultaneously, by energizing the coil 21, the second magnet 20 is excited, ensuring that the movable block 6 can be attracted securely and is less likely to fall off.

[0027] Specifically, the inner rotating shaft 19 has a groove 23 on its surface, and a ball bearing 24 is provided in the groove 23. The ball bearing 24 abuts against the inner wall of the fixed shaft 1. Through the cooperation between the groove 23, the ball bearing 24, the inner rotating shaft 19 and the fixed shaft 1, the rotation state of the inner rotating shaft 19 can be ensured to be relatively stable, and it is not easy for it to shake and affect the attraction effect between the second magnet 20 and the first magnet 7.

[0028] Specifically, the first telescopic mechanism includes a first electric telescopic rod 25. The telescopic end of the first electric telescopic rod 25 is fixedly connected to the top of the outer cylinder 12. The first electric telescopic rod 25 is electrically connected to an external power source. Through the telescopic function of the first electric telescopic rod 25, the lifting function of the outer cylinder 12 can be realized, thereby realizing the switching between drilling and sampling operations of this device.

[0029] Specifically, the second telescopic mechanism includes a second electric telescopic rod 26. The telescopic end of the second electric telescopic rod 26 is fixedly connected to the top of the second sleeve 3. The second electric telescopic rod 26 is electrically connected to an external power source. Through the telescopic function of the second electric telescopic rod 26, the lifting function of the second sleeve 3 can be realized, thereby promoting the deformation of the first elastic rod 5 and the second elastic rod 8, which facilitates the subsequent wrapping of the soil area to be sampled.

[0030] Specifically, it also includes a fixing base 31, the bottom of which is fixedly connected to the first electric telescopic rod 25, the second telescopic mechanism and the second drive motor 22 respectively. Through the function of the fixing base 31, it can be fixed and installed on other components according to the actual use scenario, which facilitates the use of this device.

[0031] Specifically, the surface of the fixed shaft 1 is provided with a longitudinal groove 27, and the inner wall of the second sleeve 3 is provided with a protrusion 28. The protrusion 28 slides relative to the groove 27. Through the cooperation of the groove 27 and the protrusion 28, the second sleeve 3 is ensured not to rotate, thus ensuring the normal use of the device.

[0032] Specifically, both the first connecting pipe 13 and the second connecting pipe 14 are equipped with flow meters 29. The flow meters 29 are electrically connected to an external power supply. Through the function of the flow meters 29, the flow rate of the extracted and introduced water can be confirmed, ensuring that the inflow and outflow of water are kept in dynamic balance and the accuracy is higher.

[0033] Specifically, the drill bit 15 is equipped with a position sensor 30, which is electrically connected to an external power supply and connected to external signals. Through the function of the position sensor 30, it can drill into the soil to the appropriate depth as needed.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A groundwater sampling device for hydrogeology and engineering geology, characterized by, The device includes a drilling mechanism. A hollow fixed shaft is fixedly connected to the top of the drilling mechanism. A first sleeve is fixedly connected to the fixed shaft, and a second sleeve slides vertically relative to it. Both the first and second sleeves have several vertically arranged and fixedly connected fixed blocks. A first elastic rod is fixedly connected between the mirror-image fixed blocks. Both the first and second sleeves have multiple sets of movable components. Each movable component includes several vertically arranged movable blocks. Each movable block has a built-in first magnet. A second elastic rod is fixedly connected between the mirror-image movable blocks. An elastic membrane is provided between the first and second elastic rods, and also between the second elastic rods. An elastic layer for conforming to the fixed blocks is provided on the side of the outermost movable block. The elastic membrane has several horizontally arranged elastic wires at its top and bottom. The fixed shaft has a rotatable magnetic attraction mechanism inside, which attracts the elastic wires and the first magnet respectively. The drilling mechanism has an outer cylinder at its top that is aligned with and fits against it. The outer cylinder has a first telescopic mechanism fixedly connected to it at its top. The fixed shaft has a second telescopic mechanism inside, which is connected to the second sleeve. The fixed shaft also has several first connecting pipes for exporting sample water and several second connecting pipes for importing replacement water. The first connecting pipes pass through the second sleeve, and the second connecting pipes pass through the first sleeve. The first telescopic mechanism, the second telescopic mechanism, and the drilling mechanism are all electrically connected to an external power source. The first telescopic mechanism, the second telescopic mechanism, and the drilling mechanism are all used to receive external control signals.

2. The groundwater sampling device for hydrogeology and engineering geology according to claim 1, characterized in that, The drilling mechanism includes a drill bit and a first drive motor. The first drive motor is fixedly connected to the fixed shaft. The output end of the first drive motor is fixedly connected to the drill bit. The drill bit is provided with an outer cylinder fixedly connected thereto. The top of the outer cylinder is provided with an annular ring, which abuts against the fixed shaft.

3. The groundwater sampling device for hydrogeology and engineering geology according to claim 1, characterized in that, The magnetic attraction mechanism includes an inner rotating shaft, on the surface of which are embedded several second magnets. Coils are wound around the second magnets. The second magnets are aligned with and attracted to the elastic iron wire and the first magnet, respectively. A second drive motor is provided at the top of the inner rotating shaft. The output end of the second drive motor is fixedly connected to the top of the inner rotating shaft. The second drive motor and the coil are electrically connected to an external power supply.

4. The groundwater sampling device for hydrogeology and engineering geology according to claim 3, characterized in that, The inner rotating shaft has a groove on its surface, and a ball bearing is provided in the groove. The ball bearing abuts against the inner wall of the fixed shaft.

5. The groundwater sampling device for hydrogeology and engineering geology according to claim 4, characterized in that, The first telescopic mechanism includes a first electric telescopic rod, the telescopic end of which is fixedly connected to the top of the outer cylinder, and the first electric telescopic rod is electrically connected to an external power source.

6. The groundwater sampling device for hydrogeology and engineering geology according to claim 5, characterized in that, The second telescopic mechanism includes a second electric telescopic rod, the telescopic end of which is fixedly connected to the top of the second sleeve, and the second electric telescopic rod is electrically connected to an external power source.

7. The groundwater sampling device for hydrogeology and engineering geology according to claim 6, characterized in that, It also includes a fixed base, the bottom of which is fixedly connected to the first electric telescopic rod, the second telescopic mechanism and the second drive motor respectively.

8. The groundwater sampling device for hydrogeology and engineering geology according to claim 1, characterized in that, The surface of the fixed shaft is provided with a longitudinal groove, and the inner wall of the second sleeve is provided with a protrusion, which slides relative to the groove.

9. The groundwater sampling device for hydrogeology and engineering geology according to claim 1, characterized in that, Both the first and second connecting pipes are equipped with flow meters, and the flow meters are electrically connected to an external power supply.

10. The groundwater sampling device for hydrogeology and engineering geology according to claim 2, characterized in that, The drill bit is equipped with a position sensor, which is electrically connected to an external power supply and is also connected to external signals.

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