A hydrogeological sampling device

Abstract

This invention discloses a hydrogeological sampling device, relating to the field of geological sampling. It includes a mobile propeller with a fixed plate fixedly installed in the middle. A sampling tank is located below the fixed plate, and the sampling tank has several parallel sample storage cavities arranged vertically inside. A valve mechanism is installed on one side of the inner wall of each sample storage cavity extending to the outside of the sampling tank to control water inflow into the sample storage cavity. The valve mechanism includes a water inlet located at the bottom of one side of the inner wall of the sample storage cavity. A pressure valve is installed on the outer surface of the sampling tank near the water inlet opening. A sealing baffle is movably installed inside the pressure valve, and a fixed stop is fixedly installed on the bottom edge of the inner wall of the pressure valve. By using the mobile propeller in conjunction with remote control, the device can be precisely moved to sample areas inaccessible to personnel, such as swamps and remote lakes, breaking through the geographical limitations of traditional sampling and improving sampling flexibility compared to existing technologies.

Description

Technical Field

[0001] This invention relates to geological sampling technology, specifically to a hydrogeological sampling device. Background Technology

[0002] Hydrogeological sampling is a core technical means for hydrogeological exploration and research. It refers to the process of collecting groundwater (such as borehole confined water, pore water in loose rocks, bedrock fissure water, natural spring water, etc.), surface water (such as rivers, lakes, reservoirs, wetland water bodies, etc.) and aquifer media (such as rock cores, rock fragments, vadose zone soil, etc.) samples through specialized sampling equipment, and obtaining key parameters such as pH value, mineralization, chemical composition, pollutant concentration, and aquifer permeability and porosity through on-site rapid testing, laboratory physicochemical analysis and microbial identification.

[0003] In existing hydrogeological sampling operations, the equipment used can be divided into two main categories based on its operation method: manual sampling devices and semi-automatic sampling devices. Manual sampling devices are represented by sampling bottles, Bayler tubes, and piston samplers. Sampling bottles are mostly used for shallow surface water or well water sampling, requiring manual lowering with a rope to the target depth and then pulling them back up to collect the sample. Bayler tubes rely on a built-in one-way valve for water sample collection, requiring repeated manual lowering and raising to draw in water samples through negative pressure within the tube. Piston samplers, on the other hand, use manual pushing of a piston to achieve targeted collection of deep groundwater. Semi-automatic sampling devices are often equipped with electric winches, which can replace manual lowering and retrieval of the sampler, but the core sampling component remains a single-chamber structure.

[0004] These sampling devices are widely used in fields such as water resource reserve assessment, water quality safety monitoring, groundwater pollution source tracing, and hydrogeological condition exploration. They are key data sources supporting regional water resource development and utilization, ecological environment protection, and geological disaster prevention and control decisions.

[0005] However, when sampling water at different depths, existing hydrogeological sampling devices, whether manual or semi-automatic, often have a single-chamber core sampling component that can only collect water samples at a fixed depth. To obtain water quality data at different depths, staff must repeatedly lower and retrieve the sampling device, adjusting the sampling depth one by one to complete the sampling operation. This process is cumbersome, time-consuming, and labor-intensive, significantly reducing sampling efficiency and easily causing water samples from different depths to mix due to repeated raising and lowering of the device, affecting the accuracy of the test results. At the same time, in waters that are difficult for personnel to reach, such as swamps and remote lakes, the difficulty of repeatedly lowering and retrieving the device is further increased, making it difficult to meet the needs of efficient and accurate hydrogeological sampling. Summary of the Invention

[0006] The purpose of this invention is to provide a hydrogeological sampling device to solve the problems of existing hydrogeological sampling devices that require repeated lowering to collect water samples at different depths, are cumbersome to operate, have low efficiency, and are difficult to sample in waters that are not easily accessible to personnel.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a hydrogeological sampling device, including a mobile thruster, a fixed plate fixedly installed at the middle position of the mobile thruster, a sampling tank arranged below the fixed plate, a plurality of sample storage cavities arranged vertically inside the sampling tank, and a valve body mechanism arranged on one side of the inner wall of the sample storage cavity extending to the outside of the sampling tank for controlling the water entering the sample storage cavity;

[0008] The valve body mechanism includes a water inlet, which is located at the bottom of one side of the inner wall of the sample storage cavity. A pressure valve is provided on the outer surface of the sampling tank near the water inlet opening. A sealing baffle is movably installed inside the pressure valve. A fixing block is fixedly installed on the bottom edge of the inner wall of the pressure valve. A water passage groove is provided at the bottom of the outer surface of the sealing baffle. A pressure control spring is installed inside the pressure valve near the sealing baffle. A water pressure sensor is provided on the top of the outer surface of the pressure valve.

[0009] The upper surface of the mobile thruster is also equipped with a retraction device to control the underwater depth of the sampling tank.

[0010] Furthermore, the take-up and release device includes a support plate, which is symmetrically fixedly installed on the upper surface of the fixed plate. A winding roller is rotatably installed between the two support plates. A drive unit is provided on one side of the winding roller extending to the outside of the support plate. A pull rope is wound around the outer surface of the winding roller, and one end of the pull rope is connected to the middle position of the upper surface of the sampling tank.

[0011] Furthermore, a fixing hole is provided through the center of the top of the fixing plate, the outer diameter of the pull rope is smaller than the inner diameter of the fixing hole, and one side of the outer surface of the pull rope is located inside the fixing hole.

[0012] Furthermore, a limiting sleeve is fixedly installed on the bottom surface of the sampling tank, and a gravity ball is installed below the sampling tank. A threaded fitting is integrally formed on the upper surface of the gravity ball.

[0013] Furthermore, an internal thread is provided on one side of the inner wall of the limiting sleeve, and the threaded fitting extends into the interior of the limiting sleeve, with the limiting sleeve and the threaded fitting being threadedly coupled to each other.

[0014] Furthermore, an indicator light is provided on one side of the upper surface of the fixed plate, and a remote controller is also provided on the outside of the moving thruster.

[0015] Furthermore, one side of the outer surface of the fixed block is located inside the water passage groove, the outer surface of the sealing baffle abuts against the inner wall of the pressure valve, and the fixed block and the water passage groove are interlocked.

[0016] Furthermore, the outer diameter of the pressure control spring is larger than the inner diameter of the inlet opening, the outer diameter of the sealing baffle is larger than the inner diameter of the opening at one end of the pressure valve, and the sealing baffle and the pressure control spring are engaged inside the pressure valve.

[0017] Furthermore, the mobile thruster is symmetrically equipped with propellers at its tail, and the mobile thruster is also equipped with a drive unit to control the rotation of the propellers.

[0018] Compared with the prior art, the hydrogeological sampling device provided by the present invention has the following beneficial effects:

[0019] 1. This invention uses a mobile propulsion system combined with remote control to precisely move to waters such as swamps and remote lakes that are difficult for personnel to reach for sampling, breaking through the geographical limitations of traditional sampling and improving the flexibility of sampling compared with existing technologies.

[0020] 2. This invention uses multiple sample storage cavities combined with a valve body mechanism. The pressure control spring preload of different pressure valves is adapted to different water pressures at different depths. Multiple water samples can be collected simultaneously in a single dive without the need for repeated lowering of the device. Compared with existing technologies, this improves sampling efficiency and avoids water sample mixing and contamination.

[0021] 3. This invention achieves stable submersion and controllable depth of the sampling tank through the cooperation of the retraction device and gravity ball. The water pressure sensor and indicator light work together to provide real-time feedback on the sampling status. Remote control reduces manual intervention and improves the convenience and accuracy of sampling compared with the prior art. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the sampling vessel structure provided in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the sample storage cavity provided in an embodiment of the present invention;

[0026] Figure 4This is a schematic diagram of the sealing baffle structure provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the gravity sphere structure provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the overall process provided for an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Moving propeller; 2. Fixing plate; 3. Sampling tank; 4. Sample storage cavity; 5. Water inlet; 6. Pressure valve; 7. Sealing baffle; 8. Fixing block; 9. Water passage trough; 10. Pressure control spring; 11. Water pressure sensor; 12. Support plate; 13. Winding roller; 14. Pull rope; 15. Drive unit; 16. Fixing hole; 17. Limit sleeve; 18. Gravity ball; 19. Threaded fitting; 20. Indicator light. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] As attached Figure 1 To be continued Figure 6 As shown:

[0033] Example 1:

[0034] This invention provides a hydrogeological sampling device, including a mobile thruster 1, a fixed plate 2 fixedly installed at the middle position of the mobile thruster 1, a sampling tank 3 arranged below the fixed plate 2, and a plurality of sample storage cavities 4 arranged in parallel inside the sampling tank 3. A valve body mechanism is provided on one side of the inner wall of the sample storage cavity 4 extending to the outside of the sampling tank 3 for controlling the water entering the sample storage cavity 4.

[0035] The valve body mechanism includes an inlet 5, which is located at the bottom of one side of the inner wall of the sample storage cavity 4. A pressure valve 6 is installed on the outer surface of the sampling tank 3 near the opening of the inlet 5. A sealing baffle 7 is movably installed inside the pressure valve 6. A fixing block 8 is fixedly installed on the bottom edge of the inner wall of the pressure valve 6. A water passage groove 9 is opened at the bottom of the outer surface of the sealing baffle 7. A pressure control spring 10 is installed inside the pressure valve 6 near the sealing baffle 7. A water pressure sensor 11 is installed on the top of the outer surface of the pressure valve 6.

[0036] One side of the outer surface of the fixed block 8 is located inside the water passage 9, and the outer surface of the sealing baffle 7 abuts against the inner wall of the pressure valve 6. The fixed block 8 and the water passage 9 are interlocked.

[0037] The outer diameter of the pressure control spring 10 is larger than the inner diameter of the opening of the inlet 5, and the outer diameter of the sealing baffle 7 is larger than the inner diameter of the opening at one end of the pressure valve 6. The sealing baffle 7 and the pressure control spring 10 are engaged and placed inside the pressure valve 6.

[0038] An indicator light 20 is provided on one side of the upper surface of the fixed plate 2, and a remote controller is also provided on the outside of the moving pusher 1;

[0039] The mobile thruster 1 has propellers symmetrically arranged at its tail, and the mobile thruster 1 also has a drive unit inside to control the rotation of the propellers.

[0040] The upper surface of the mobile thruster 1 is also equipped with a retraction device to control the underwater depth of the sampling tank 3.

[0041] Working principle: First, according to the target sampling depth, the staff adjusts the preload of the pressure control spring 10 in the pressure valve 6 corresponding to each sample storage cavity 4 so that different pressure valves 6 match the water pressure threshold of different depths. The greater the preload, the deeper the water sample can be collected. At the same time, the staff checks the fit between the sealing baffle 7 and the inner wall of the pressure valve 6 to ensure that the fixing block 8 is embedded in the water tank 9, so as to achieve the initial sealing of the inlet 5.

[0042] Then, the staff turned on the power of the mobile propulsion unit 1 and sent a command through the remote controller. The drive unit drove the propeller to move the device precisely to the sampling point that is difficult for personnel to reach, such as swamps and remote lake areas. At this time, the indicator light 20 is in a standby state with the light on, and the water pressure sensor 11 monitors the external water pressure data in real time.

[0043] Next, the staff controlled the launching and retracting device through the remote controller, releasing the pull rope 14 to sink the sampling tank 3. As the diving depth of the sampling tank 3 increased, the water pressure gradually increased. When the water pressure reached the preset threshold of a certain pressure valve 6, the water pressure pushed the sealing baffle 7 to compress the pressure control spring 10. The sealing baffle 7 moved within the pressure valve 6, the fixed block 8 and the water passage 9 were misaligned and separated, the water inlet 5 opened, and the water sample at the corresponding depth flowed into the sample storage cavity 4. At the same time, the water pressure sensor 11 transmitted the water pressure signal to the control system, triggering the indicator light 20 to flash, indicating that sampling was being carried out at that depth.

[0044] Finally, after sampling is completed, the staff operates the take-up and take-down device to retrieve the sampling tank 3. During the rise of the sampling tank 3, the water pressure gradually decreases, the pressure control spring 10 pushes the sealing baffle 7 to reset, the fixed block 8 is re-embedded into the water tank 9, and the water inlet 5 is closed to prevent water leakage or mixing. At this time, the water pressure sensor 11 detects that the water pressure is lower than the threshold, the indicator light 20 stops flashing and returns to constant light, completing a synchronous collection of water samples at multiple depths.

[0045] Example 2:

[0046] This embodiment is basically the same as the previous embodiment, except that the receiving and releasing device includes a support plate 12, the support plate 12 is symmetrically fixedly installed on the upper surface of the fixed plate 2, a winding roller 13 is rotatably installed between the two support plates 12, a driving part 15 is provided on one side of the winding roller 13 extending to the outside of the support plate 12, a pull rope 14 is wound around the outer surface of the winding roller 13, and one end of the pull rope 14 is connected to the middle position of the upper surface of the sampling container 3.

[0047] A fixing hole 16 is provided through the middle of the top of the fixing plate 2. The outer diameter of the pull rope 14 is smaller than the inner diameter of the fixing hole 16, and one side of the outer surface of the pull rope 14 is located inside the fixing hole 16.

[0048] Working principle: First, the staff checks the connection status of the take-up and release device to ensure that the support plate 12 is firmly fixed on the fixed plate 2, rotates flexibly around the winding roller 13, the pull rope 14 is free from wear and tangling, and the pull rope 14 is stably connected to the sampling tank 3 after passing through the fixed hole 16; then, the signal connection between the remote controller and the drive unit 15 is debugged to ensure smooth command transmission.

[0049] Then, when the mobile thruster 1 reaches the target sampling point, the staff sends a lowering command through the remote controller. The drive unit 15 drives the winding roller 13 to rotate forward, and the winding roller 13 releases the pull rope 14. The pull rope 14 is lowered vertically under the guidance of the fixing hole 16 to avoid the pull rope 14 from deviating and getting tangled. The sampling container 3 sinks smoothly as the pull rope 14 is released. The staff can observe the diving depth of the sampling container 3 in real time through the scale on the surface of the pull rope 14.

[0050] Next, when the sampling tank 3 reaches the preset depth, the staff sends a pause command, the drive unit 15 stops operating, the winding roller 13 locks the pull rope 14, and the sampling tank 3 maintains the current depth for sampling; after the water pressure sensor 11 detects that the water pressure is stable, it sends a feedback signal to the control system, and the indicator light 20 changes status to indicate that sampling is in progress;

[0051] Finally, after sampling is completed, the staff sends a retrieval command. The drive unit 15 drives the winding roller 13 to reverse, and the winding roller 13 winds up the pull rope 14. The pull rope 14 pulls the sampling canister 3 vertically upward. The fixing hole 16 limits the swing amplitude of the pull rope 14 to prevent the sampling canister 3 from colliding with the moving pusher 1. After the sampling canister 3 is completely retrieved to below the fixing plate 2, the drive unit 15 stops working, completing the precise control of the sampling depth.

[0052] Example 3:

[0053] This embodiment is basically the same as the previous embodiment, except that a limiting sleeve 17 is fixedly installed on the bottom surface of the sampling tank 3, a gravity ball 18 is installed below the sampling tank 3, and a threaded fitting 19 is integrally formed on the upper surface of the gravity ball 18.

[0054] The inner wall of the limiting sleeve 17 has an internal thread, and the threaded fitting 19 extends into the inside of the limiting sleeve 17. The limiting sleeve 17 and the threaded fitting 19 are threadedly coupled to each other.

[0055] Working principle: First, based on the water density of the sampling area and the weight of the sampling tank 3, the staff selects a gravity ball 18 with a suitable weight, aligns the threaded fitting 19 on the gravity ball 18 with the limiting sleeve 17 at the bottom of the sampling tank 3, and rotates the threaded fitting 19 clockwise to make it fully coupled with the internal thread of the limiting sleeve 17, ensuring that the gravity ball 18 is firmly installed and will not fall off during the sinking process;

[0056] Then, the staff operated the launching device to lower the sampling tank 3. The gravity ball 18 provided downward traction force to overcome the buoyancy and resistance of the water and drive the sampling tank 3 to sink in a vertical position. This prevented the sampling tank 3 from tilting and causing the pressure valve 6 to be triggered prematurely by the water pressure at different depths, effectively preventing cross-mixing of water samples at different depths.

[0057] Next, if the staff finds that the sampling container 3 sinks too slowly and cannot efficiently reach the target depth, the sampling container 3 can be retrieved and replaced with a heavier gravity ball 18; if the sinking speed is too fast and it is difficult to accurately control the depth, a lighter gravity ball 18 can be replaced. By adjusting the weight of the gravity ball 18, the sinking speed of the sampling container 3 can be flexibly adjusted.

[0058] Finally, after the sampling tank 3 is returned to the water surface, the staff rotates the gravity ball 18 counterclockwise to separate the threaded fitting 19 from the limiting sleeve 17, disassembles the gravity ball 18 to facilitate the extraction of water samples from the sampling tank 3; at the same time, they clean the impurities on the surface of the gravity ball 18, store it for later use, and prepare for the next sampling.

[0059] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hydrogeological sampling device, comprising a moving thruster (1), characterized in that, A fixed plate (2) is fixedly installed in the middle of the mobile thruster (1). A sampling tank (3) is set below the fixed plate (2). Several sample storage cavities (4) are opened in parallel inside the sampling tank (3). A valve body mechanism is set on one side of the inner wall of the sample storage cavity (4) extending to the outside of the sampling tank (3) to control the water inlet inside the sample storage cavity (4). The valve body mechanism includes a water inlet (5), which is located at the bottom of one side of the inner wall of the sample storage cavity (4). A pressure valve (6) is provided on the outer surface of the sampling tank (3) near the opening of the water inlet (5). A sealing baffle (7) is movably installed inside the pressure valve (6). A fixing block (8) is fixedly installed on the bottom edge of the inner wall of the pressure valve (6). A water passage groove (9) is opened at the bottom of the outer surface of the sealing baffle (7). A pressure control spring (10) is installed inside the pressure valve (6) near the sealing baffle (7). A water pressure sensor (11) is provided on the top of the outer surface of the pressure valve (6). The upper surface of the mobile thruster (1) is also provided with a retraction device for controlling the underwater depth of the sampling tank (3).

2. The hydrogeological sampling device according to claim 1, characterized in that, The receiving and releasing device includes a support plate (12), which is symmetrically fixed on the upper surface of the fixed plate (2). A winding roller (13) is rotatably installed between the two support plates (12). A driving part (15) is provided on one side of the winding roller (13) extending to the outside of the support plate (12). A pull rope (14) is wound around the outer surface of the winding roller (13). One end of the pull rope (14) is connected to the middle position of the upper surface of the sampling tank (3).

3. A hydrogeological sampling device according to claim 2, characterized in that, The fixing plate (2) has a fixing hole (16) through the middle of its top end. The outer diameter of the pull rope (14) is smaller than the inner diameter of the fixing hole (16). One side of the outer surface of the pull rope (14) is located inside the fixing hole (16).

4. A hydrogeological sampling device according to claim 1, characterized in that, A limiting sleeve (17) is fixedly installed on the bottom surface of the sampling tank (3), and a gravity ball (18) is installed below the sampling tank (3). A threaded fitting (19) is integrally formed on the upper surface of the gravity ball (18).

5. A hydrogeological sampling device according to claim 4, characterized in that, The inner wall of the limiting sleeve (17) is provided with an internal thread, and the threaded fitting (19) extends into the inside of the limiting sleeve (17). The limiting sleeve (17) and the threaded fitting (19) are threadedly coupled to each other.

6. A hydrogeological sampling device according to claim 1, characterized in that, An indicator light (20) is provided on one side of the upper surface of the fixed plate (2), and a remote controller is also provided on the outside of the moving thruster (1).

7. A hydrogeological sampling device according to claim 1, characterized in that, The outer surface of the fixed block (8) is located inside the water passage (9), and the outer surface of the sealing baffle (7) abuts against the inner wall of the pressure valve (6). The fixed block (8) and the water passage (9) are interlocked.

8. A hydrogeological sampling device according to claim 1, characterized in that, The outer diameter of the pressure control spring (10) is greater than the inner diameter of the inlet (5) opening, and the outer diameter of the sealing baffle (7) is greater than the inner diameter of the pressure valve (6) opening at one end. The sealing baffle (7) and the pressure control spring (10) are engaged inside the pressure valve (6).

9. A hydrogeological sampling device according to claim 1, characterized in that, The mobile thruster (1) has propellers symmetrically arranged at its tail, and the mobile thruster (1) also has a drive component for controlling the rotation of the propellers inside.

Images