A sampling and survey device for hydrogeological monitoring

Abstract

The present application relates to the technical field of water source sampling and discloses a sampling and exploration device for hydrogeological monitoring, comprising a sampling housing, the bottom of which is fixedly connected to a counterweight. The present invention uses a third elastic plate as a pressure-responsive element, whose deformation is transmitted to a first connecting rod via a pressure-sensitive spring, thereby forming mechanical feedback to changes in water pressure. At this time, the third elastic plate drives the first connecting rod to move, and the movement of the first connecting rod drives the displacement of the third connecting rod via the second connecting rod, thereby driving the sealing plate to seal the connecting pipe. This multi-stage transmission structure can automatically adjust the sealing state according to changes in water pressure. When stale water is detected, the connecting pipe is quickly blocked by mechanical linkage to avoid sampling of the stale water. During the sampling process, a fluid control mechanism with self-feedback characteristics is formed, which can effectively avoid distortion of the detection results and make the detection results more accurate.

Description

Technical Field

[0001] The present application relates to the technical field of water source sampling, and in particular to a sampling and surveying device for hydrogeological monitoring. Background Art

[0002] Hydrogeological surveys play an important role in water resource development, utilization, and environmental protection. In particular, sampling and analyzing water quality in different water areas and at different depths can provide a scientific basis for water quality assessment, water pollution control, and groundwater resource management.

[0003] During the use of existing hydrogeological detection sampling devices, due to their simple structure and single function, the sampling conditions are very demanding. During sampling, the sampling points may be arranged irrationally, resulting in the data being unable to reflect the actual hydrological conditions. In addition, when sampling and surveying water sources, since the water sources are in the same environment for a long time, the water that has been retained in the well or hole for a long time may react chemically with the well wall materials, reproduce microorganisms or dissolve sediments, resulting in abnormal chemical composition and distortion of the test results. The detected water source cannot directly reflect the physical and chemical properties of the natural water body in the formation, thereby affecting the test results. Summary of the Invention

[0004] The present application proposes a sampling and survey device for hydrogeological monitoring, which has the advantage of being able to distinguish new water from old water, and is used to solve the problem of being unable to actively separate water bodies when sampling water sources.

[0005] To achieve the above-mentioned object, the present application adopts the following technical solution: a sampling and surveying device for hydrogeological monitoring, comprising a sampling housing, a counterweight block fixedly connected to the bottom of the sampling housing, a mounting block fixedly connected to the top of the sampling housing, and a pumping assembly disposed inside the mounting block;

[0006] Sampling chambers are fixedly connected to both sides of the sampling housing, and a sensing component is provided inside the sampling chamber;

[0007] A water inlet cavity is provided inside the sampling housing, and an opening and closing component is provided inside the water inlet cavity;

[0008] A fixing column is fixedly connected to one side of the interior of the sampling housing, a first elastic plate is fixedly sleeved on the outer side of the fixing column, and a flip assembly is provided inside the first elastic plate.

[0009] Preferably, a pull rope is fixedly connected to the top of the mounting block, and a plurality of water inlets are provided on the outer side of the bottom of the sampling housing.

[0010] Preferably, the water pumping assembly includes a mounting chamber, which is opened inside the mounting block, and a water pump is fixedly connected to the inside of the mounting chamber, and a water outlet pipe is fixedly connected to the top of the water pump, and a first water inlet pipe is fixedly connected to the bottom of the water pump, and the first water inlet pipe is arranged on the center line of the sampling housing and the mounting block, and the first water inlet pipe is fixedly connected to the mounting block and the sampling housing, and a second water inlet pipe is fixedly connected to the bottom of the first water inlet pipe, and the outer surface of the water inlet cavity fits the inner diameter of the water inlet cavity, which is convenient for extracting the detected water source, and a plurality of water inlets are opened at the bottom of the sampling housing, and the plurality of water inlets are connected to the water inlet cavity.

[0011] Preferably, the sensing component includes two groups of connecting tubes, both groups of connecting tubes are connected to the first water inlet pipe, the bottom of the sampling chamber is threadedly connected to a threaded base, the middle part of the threaded base is sleeved with a sampling tube, the inside of the sampling tube is slidably connected to a float, the top of the inner surface of the sampling chamber is fixedly connected to a pressure sensing block, the pressure sensing block and the float are on the same axis, and the pressure sensing block is electrically connected to the drive motor.

[0012] Preferably, the opening and closing assembly includes a third elastic plate, one side of the top of the third elastic plate is fixedly connected to a pressure-sensing spring, the middle part of the pressure-sensing spring is fixedly connected to a first connecting rod, one side of the first connecting rod is hinged to a second connecting rod, the middle part of the second connecting rod is movably sleeved on a limiting column, the limiting column is fixedly connected to the sampling housing, one side of the limiting column is hinged to a third connecting rod, and the first connecting rod and the third connecting rod are respectively arranged at both ends of the second connecting rod.

[0013] Preferably, the opening and closing assembly also includes a connecting column, which is fixedly sleeved on the inside of the third connecting rod, and both ends of the connecting column are fixedly connected to a sealing plate, a movable groove is opened inside the sampling chamber, and the sealing plate is rotatably connected to the inside of the movable groove, and one side of the sealing plate is in contact with the surface of the water outlet of the connecting pipe to facilitate blocking the water flow.

[0014] Preferably, the flipping assembly includes a driving motor, which is fixedly connected to the inside of the sampling housing, and the output end of the driving motor is fixedly connected to an elastic rod, the first elastic plate and the fixed column are movably sleeved on the outside of the elastic rod, a second elastic plate is provided on one side of the first elastic plate, the second elastic plate is fixedly sleeved on the outside of the elastic rod, the third elastic plate is movably sleeved on the elastic rod, and semicircular plates are fixedly connected on both sides of the second elastic plate.

[0015] Preferably, the semicircular plate is in the shape of a semicircle. After flipping, the semicircular surface is opposite to the flow direction of the water flow, and appears streamlined in the water flow to reduce the impact of the water flow.

[0016] Preferably, the second elastic plate is arranged at the constricted area of ​​the water inlet chamber, which is the area with the largest turbulence difference, so as to facilitate the detection of new water and stale water.

[0017] Preferably, the diameter of the float is smaller than the inner surface diameter of the sampling tube, so that the sampling water flow can flow into the interior of the sampling tube better. The diameter of the float is larger than the diameter of the connecting tube, so as to facilitate blocking the water flow.

[0018] The beneficial effects of the present invention are as follows:

[0019] The present invention uses a third elastic plate as a pressure-responsive element, and its deformation is transmitted to the first connecting rod through a pressure-sensitive spring, forming a mechanical feedback to the water pressure change. At this time, the first connecting rod is driven to move by the third elastic plate. Due to the hinged design of the first connecting rod and the second connecting rod, the linear motion is converted into rotational motion. The limit column is used as a fulcrum to constrain the motion trajectory of the second connecting rod. The setting of the third connecting rod forms a lever effect, which amplifies the displacement of the second connecting rod and transmits it to the sealing component. This multi-stage transmission structure can automatically adjust the sealing state according to the water pressure change. When stale water is detected, the connecting pipe is quickly blocked by mechanical linkage to avoid sampling of the stale water. During the sampling process, a fluid control mechanism with self-feedback characteristics is formed, which can effectively avoid the distortion of the detection results and make the detection results more accurate.

[0020] The present invention causes the float to float up and contact the pressure sensing block, thereby starting the drive motor and driving the elastic rod to rotate. During rotation, due to the design of the second elastic plate fixedly sleeved on the elastic rod, the semicircular plate can rotate to a specific angle with the elastic rod. Its semicircular structure forms a streamlined contact surface in the water flow, effectively reducing turbulent resistance. The movable sleeve relationship between the third elastic plate and the elastic rod enables the sealing plate movement of the opening and closing component and the flipping of the semicircular plate to form a mechanical linkage. This dynamic adjustment mechanism based on mechanical linkage not only ensures the structural stability of the device under the impact of water flow, but also realizes the active separation of water bodies in different states. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application in a clear and understandable manner.

[0022] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the sampling housing of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the sampling chamber of the present invention;

[0026] Figure 4 Schematic diagram of the internal structure of the sampling tube of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the opening and closing component of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the elastic rod of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the semicircular plate of the present invention.

[0030] Among them: 1. Sampling shell; 2. Counterweight block; 3. Mounting block; 4. Pull rope; 5. Water outlet pipe; 6. Sampling chamber; 7. Mounting chamber; 8. Water pump; 9. First water inlet pipe; 10. Second water inlet pipe; 11. Water inlet chamber; 12. Water inlet; 13. Connecting pipe; 14. Threaded base; 15. Sampling tube; 16. Float; 17. Pressure sensing block; 18. Fixed column; 19. First elastic plate; 20. Second elastic plate; 21. Third elastic plate; 22. Pressure-sensing spring; 23. First connecting rod; 24. Second connecting rod; 25. Limiting column; 26. Third connecting rod; 27. Connecting column; 28. Sealing plate; 29. ​​Driving motor; 30. Elastic rod; 31. Semicircular plate; 32. Moving groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] See also Figure 1-7 The embodiment of the present invention provides a sampling and exploration device for hydrogeological monitoring, comprising a sampling housing 1, a counterweight block 2 fixedly connected to the bottom of the sampling housing 1, a mounting block 3 fixedly connected to the top of the sampling housing 1, and a pumping assembly disposed inside the mounting block 3;

[0033] The sampling chamber 6 is fixedly connected to both sides of the sampling housing 1, and the interior of the sampling chamber 6 is provided with a sensing component;

[0034] A water inlet chamber 11 is provided inside the sampling housing 1, and an opening and closing component is provided inside the water inlet chamber 11;

[0035] A fixing column 18 is fixedly connected to one side of the interior of the sampling housing 1, a first elastic plate 19 is fixedly sleeved on the outer side of the fixing column 18, and a flip assembly is provided inside the first elastic plate 19;

[0036] The counterweight 2 enables rapid sinking and positioning, solving the problem of inaccurate sampling point layout in traditional devices. The linkage control of the water inlet chamber 11 and the opening and closing component can accurately intercept the target water layer sample and prevent the mixing of stale water and fresh water. The rigid support structure of the fixed column 18 and the first elastic plate 19, combined with the dynamic adjustment function of the flip component, enables the device to maintain a stable posture under the impact of water flow, ensuring the reliability of the coordinated operation of various components during the sampling process.

[0037] Among them, the top of the mounting block 3 is fixedly connected with a cable 4, and the bottom outer side of the sampling housing 1 is provided with multiple water inlets 12;

[0038] Through the fixed connection between the cable 4 and the mounting block 3, the precise positioning and controllable lowering of the device in a complex hydrological environment can be achieved, ensuring the rationality of the sampling point layout. Through the multiple water inlets 12 opened on the outer side of the bottom, the water sample collection coverage is expanded, and sampling failure caused by blockage or position deviation of a single water inlet 12 is avoided. At the same time, multi-channel water inlet can accelerate water replacement and reduce the contact time between retained water and the device, thereby reducing the impact of chemical reactions or microbial growth on the original components of the water sample.

[0039] Among them, the water pumping assembly includes a mounting chamber 7, the mounting chamber 7 is opened inside the mounting block 3, the interior of the mounting chamber 7 is fixedly connected to a water pump 8, the top of the water pump 8 is fixedly connected to a water outlet pipe 5, the bottom of the water pump 8 is fixedly connected to a first water inlet pipe 9, the first water inlet pipe 9 is arranged on the center line of the sampling housing 1 and the mounting block 3, the first water inlet pipe 9 is fixedly connected to the mounting block 3 and the sampling housing 1, the bottom of the first water inlet pipe 9 is fixedly connected to a second water inlet pipe 10, the outer surface of the water inlet cavity 11 is fitted with the inner diameter of the water inlet cavity 11, which is convenient for extracting the water source for detection, and the bottom of the sampling housing 1 is provided with multiple groups of water inlets 12, and the multiple groups of water inlets 12 are connected to the water inlet cavity 11;

[0040] Through the vertical layout of the water pump 8 in the installation chamber 7, combined with the first water inlet pipe 9 and the second water inlet pipe 10 located on the central axis of the device to form a directional water pumping channel, precise control of sampling is achieved. The fixed connection between the installation block 3 and the sampling housing 1 ensures the stability of the water pumping path and avoids water flow disturbance. The fitting structure of the second water inlet pipe 10 and the water inlet chamber 11 optimizes the water flow dynamics characteristics, while ensuring the water pumping efficiency and reducing turbulent interference. The distribution design of multiple groups of water inlets 12 at the bottom enhances the sampling ability of the bottom water body and effectively avoids data deviation of a single sampling point.

[0041] The sensing assembly includes two groups of connecting pipes 13, both of which are connected to the first water inlet pipe 9. The bottom of the sampling chamber 6 is threadedly connected to a threaded base 14, and the middle of the threaded base 14 is sleeved with a sampling tube 15. The interior of the sampling tube 15 is slidably connected to a float 16. The top of the inner surface of the sampling chamber 6 is fixedly connected to a pressure sensing block 17. The pressure sensing block 17 and the float 16 are on the same axis. The pressure sensing block 17 is electrically connected to the drive motor 29.

[0042] By setting up a dual-channel connecting pipe 13 connected to the main water inlet pipe, it is ensured that the water flow can be evenly distributed to the sampling chambers 6 on both sides. The threaded connection structure of the threaded base 14 and the sampling chamber 6 makes the sampling tube 15 detachable and replaceable. The sliding design of the float 16 in the sampling tube 15 can automatically trigger the sampling action through the buoyancy generated by the rising water level. When the float 16 rises with the water level to contact the pressure sensing block 17, a mechanical trigger signal is generated to realize automatic judgment of the sampling timing. The coaxial arrangement of the pressure sensing block 17 and the float 16 ensures the accuracy and reliability of the trigger signal, avoiding the error caused by the manual judgment of the sampling timing of the traditional device. This structural combination can not only sense the water level change in real time, but also directly trigger sampling through physical contact, effectively solving the problem of stratified sampling of stale water and fresh water.

[0043] Among them, the opening and closing assembly includes a third elastic plate 21, one side of the top of the third elastic plate 21 is fixedly connected to a pressure-sensitive spring 22, the middle part of the pressure-sensitive spring 22 is fixedly connected to a first connecting rod 23, one side of the first connecting rod 23 is hinged to a second connecting rod 24, the middle part of the second connecting rod 24 is movably sleeved with a limiting column 25, the limiting column 25 is fixedly connected to the sampling housing 1, and one side of the limiting column 25 is hinged to a third connecting rod 26, and the first connecting rod 23 and the third connecting rod 26 are respectively arranged at both ends of the second connecting rod 24;

[0044] Dynamic control of the water flow channel is achieved through a mechanical linkage structure. The third elastic plate 21 serves as a pressure-responsive element, and its deformation is transmitted to the first connecting rod 23 through the pressure-sensitive spring 22, forming a mechanical feedback of the water pressure change. The hinged design of the first connecting rod 23 and the second connecting rod 24 converts linear motion into rotational motion. The limit column 25 serves as a fulcrum to constrain the motion trajectory of the second connecting rod 24 to ensure movement accuracy. The setting of the third connecting rod 26 forms a lever effect, amplifying the displacement of the second connecting rod 24 and transmitting it to the sealing component. This multi-stage transmission structure can automatically adjust the sealing state according to water pressure changes. When stale water is detected, the connecting pipe 13 is quickly blocked through mechanical linkage to avoid mixing of water bodies at different levels. The hinged coordination of each connecting rod realizes precise control of complex motion trajectories. The fixed connection of the limit column 25 ensures movement stability, forming a fluid control mechanism with self-feedback characteristics.

[0045] The opening and closing assembly further includes a connecting column 27, which is fixedly sleeved inside the third connecting rod 26. Both ends of the connecting column 27 are fixedly connected to a sealing plate 28. A movable groove 32 is provided inside the sampling chamber 6. The sealing plate 28 is rotatably connected to the inside of the movable groove 32. One side of the sealing plate 28 is in contact with the surface of the water outlet of the connecting pipe 13 to facilitate blocking the water flow.

[0046] Through the fixed sleeve relationship between the connecting column 27 and the third connecting rod 26, the sealing plate 28 is linked to the driving mechanism to ensure that the rotation trajectory of the sealing plate 28 in the movable groove 32 is controllable. The design of the sealing plate 28 fitting the surface of the water outlet of the connecting pipe 13 can dynamically adjust the sealing state according to the water flow pressure during the sampling process, blocking the water flow channel between the connecting pipe 13 and the sampling chamber 6. The opening of the movable groove 32 provides a rotation space for the sealing plate 28, so that it can still maintain close contact with the water outlet of the connecting pipe 13 when impacted by the water flow, thereby effectively isolating water samples entering at different time periods and avoiding detection errors caused by the mixing of stale water and new water. The structure of the symmetrical arrangement on both sides of the sealing plate 28 further enhances the balance and sealing reliability when blocking the water flow;

[0047] Among them, the flip assembly includes a drive motor 29, which is fixedly connected to the inside of the sampling housing 1, and the output end of the drive motor 29 is fixedly connected to the elastic rod 30. The first elastic plate 19 and the fixed column 18 are both movably sleeved on the outside of the elastic rod 30. A second elastic plate 20 is provided on one side of the first elastic plate 19, and the second elastic plate 20 is fixedly sleeved on the outside of the elastic rod 30. The third elastic plate 21 is movably sleeved with the elastic rod 30, and both sides of the second elastic plate 20 are fixedly connected to semicircular plates 31;

[0048] The drive motor 29 drives the elastic rod 30 to rotate. Since the second elastic plate 20 is fixedly sleeved on the elastic rod 30, the semicircular plate 31 can rotate to a specific angle with the elastic rod 30. Its semicircular structure forms a streamlined contact surface in the water flow, effectively reducing turbulent resistance. The movable sleeve relationship between the third elastic plate 21 and the elastic rod 30 enables the movement of the sealing plate 28 of the opening and closing assembly and the flipping of the semicircular plate 31 to form a mechanical linkage. This dynamic adjustment mechanism based on mechanical linkage ensures the structural stability of the device under the impact of water flow.

[0049] The semicircular plate 31 is in the shape of a semicircle. After turning over, the semicircular surface is opposite to the flow direction of the water flow, and presents a streamlined shape in the water flow to reduce the impact of the water flow.

[0050] By designing the semicircular plate 31 as a semicircular structure, the semicircular surface is aligned with the direction of the water flow after the device is flipped over. The unique geometric properties of the semicircle are used to form a streamlined contact surface. This streamlined structure can effectively disperse the water flow pressure and reduce the resistance caused by turbulence, allowing the device to maintain a stable posture in a dynamic water environment. In particular, the relative arrangement of the semicircular surface and the flow direction allows the water to flow smoothly along the curved surface, avoiding the vortex phenomenon caused by right-angle or flat structures, thereby significantly reducing the vibration amplitude of the device when it is impacted by the water flow.

[0051] The second elastic plate 20 is arranged at the constricted area of ​​the water inlet chamber 11, which is the area with the largest turbulence difference, and is convenient for detecting new water and stale water.

[0052] By arranging the second elastic plate 20 at the constriction of the water inlet chamber 11, the turbulence difference caused by the sudden change in water flow velocity in this area is utilized to enhance the identification of the mixing state of water bodies with different retention times. The reduction in cross-sectional area at the constriction causes the flow velocity to increase, and the water flow produces a significant turbulent boundary layer here, causing stratification between long-retained stale water and fresh inflowing water due to differences in density and viscosity. The second elastic plate 20 is located in this area with the greatest turbulence difference, and its elastic deformation characteristics can respond to dynamic changes in the water flow. By monitoring the vibration frequency or displacement of the elastic plate, the mixing state of the water body can be indirectly judged, thereby achieving differentiated detection of water samples with different retention times. This design achieves water state identification through physical structure optimization, avoids reliance on chemical sensors, and reduces device complexity and maintenance costs.

[0053] The diameter of the float 16 is smaller than the inner diameter of the sampling tube 15, so that the water flow for sampling can flow into the interior of the sampling tube 15 better. The diameter of the float 16 is larger than the diameter of the connecting tube 13, so that the water flow can be blocked.

[0054] A balance between flow control and sealing is achieved through dual dimensional constraints. The diameter of the float 16 is designed to be smaller than the inner diameter of the sampling tube 15, allowing water to bypass the edge of the float 16 when entering the sampling tube 15, forming an annular flow channel, reducing fluid resistance and improving sampling efficiency. The diameter of the float 16 is larger than the diameter of the connecting tube 13. This ensures that when the float 16 floats to the outlet of the connecting tube 13 under the action of water pressure, its spherical surface can completely cover the cross-section of the tube orifice to form a mechanical seal, preventing the backflow of collected samples or secondary contamination of external water bodies. The coordinated control of the two dimensional parameters not only ensures the dynamic stability of the water flow during the sampling process, but also achieves precise blocking of the fluid path at key nodes, thereby improving the reliability of the stratified sampling data.

[0055] Working principle:

[0056] During operation, the cable 4 is fixedly connected to the mounting block 3 to achieve precise positioning and controllable lowering of the device in a complex hydrological environment, ensuring the rationality of the sampling point layout. After the water is placed at a suitable water level, the water flows into the water inlet chamber 11 through multiple water inlets 12 opened on the outside of the bottom. At this time, the water pump 8 is started, and a directional water pumping channel is formed in combination with the first water inlet pipe 9 and the second water inlet pipe 10 located on the central axis of the device. When the water flow is extracted, due to the different fluid mechanics characteristics of new water and old water, the flow of old water is stable, the turbulence intensity is low, and the pressure gradient changes little during pumping, while the fluidity of new water is strong and the turbulence is obvious. At this time, the third elastic plate 21 is used as a pressure response element when pumping, and its deformation is transmitted to the first connecting rod 23 through the pressure-sensitive spring 22, forming a pressure pumping channel. In response to mechanical feedback of water pressure changes, the first connecting rod 23 is driven to move by the third elastic plate 21. Due to the hinged design of the first connecting rod 23 and the second connecting rod 24, linear motion is converted into rotational motion. The limit column 25 is used as a fulcrum to constrain the motion trajectory of the second connecting rod 24. The setting of the third connecting rod 26 forms a lever effect, amplifying the displacement of the second connecting rod 24 and transmitting it to the sealing component. This multi-stage transmission structure can automatically adjust the sealing state according to water pressure changes. When stale water is detected, the connecting pipe 13 is quickly blocked through mechanical linkage to avoid sampling of stale water. During the sampling process, a fluid control mechanism with self-feedback characteristics is formed, which can effectively avoid distortion of the detection results and make the detection results more accurate.

[0057] After the sampling is completed, the float 16 floats up and contacts the pressure sensing block 17, thereby starting the drive motor 29 to drive the elastic rod 30 to rotate. During the rotation, due to the design of the second elastic plate 20 fixedly sleeved on the elastic rod 30, the semicircular plate 31 can rotate to a specific angle with the elastic rod 30. Its semicircular structure forms a streamlined contact surface in the water flow, effectively reducing turbulent resistance. The movable sleeve relationship between the third elastic plate 21 and the elastic rod 30 enables the sealing plate 28 of the opening and closing component to move and flip the semicircular plate 31 to form a mechanical linkage. This dynamic adjustment mechanism based on mechanical linkage not only ensures the structural stability of the device under the impact of water flow, but also realizes the active separation of water bodies in different states.

[0058] After the sampling is completed, the sampling housing 1 is pulled out by the pull rope 4 and the sampling tube 15 is taken out, thereby completing the sampling.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sampling and surveying device for hydrogeological monitoring, comprising a sampling housing (1), characterized in that: The bottom of the sampling housing (1) is fixedly connected to a counterweight block (2), the top of the sampling housing (1) is fixedly connected to a mounting block (3), and a water pumping assembly is provided inside the mounting block (3); Sampling chambers (6) are fixedly connected to both sides of the sampling housing (1), and a sensing component is provided inside the sampling chamber (6); A water inlet cavity (11) is provided inside the sampling housing (1), and an opening and closing component is provided inside the water inlet cavity (11); A fixing column (18) is fixedly connected to one side of the interior of the sampling housing (1), a first elastic plate (19) is fixedly sleeved on the outer side of the fixing column (18), and a flip assembly is provided inside the first elastic plate (19); The water pumping assembly comprises a mounting chamber (7), the mounting chamber (7) is opened inside the mounting block (3), a water pump (8) is fixedly connected inside the mounting chamber (7), a water outlet pipe (5) is fixedly connected to the top of the water pump (8), a first water inlet pipe (9) is fixedly connected to the bottom of the water pump (8), a second water inlet pipe (10) is fixedly connected to the bottom of the first water inlet pipe (9), and a plurality of water inlets (12) are opened at the bottom of the sampling housing (1), and the plurality of water inlets (12) are connected to the water inlet chamber (11); The sensing assembly comprises two groups of connecting pipes (13), both groups of connecting pipes (13) are connected to the first water inlet pipe (9), the bottom of the sampling chamber (6) is threadedly connected to a threaded base (14), the middle of the threaded base (14) is sleeved with a sampling tube (15), the interior of the sampling tube (15) is slidably connected to a float (16), the top of the inner surface of the sampling chamber (6) is fixedly connected to a pressure sensing block (17), the pressure sensing block (17) and the float (16) are on the same axis, and the pressure sensing block (17) is electrically connected to the drive motor (29); The opening and closing assembly includes a third elastic plate (21), one side of the top of the third elastic plate (21) is fixedly connected to a pressure-sensitive spring (22), the middle of the pressure-sensitive spring (22) is fixedly connected to a first connecting rod (23), one side of the first connecting rod (23) is hinged to a second connecting rod (24), the middle of the second connecting rod (24) is movably sleeved to a limiting column (25), the limiting column (25) is fixedly connected to the sampling housing (1), one side of the limiting column (25) is hinged to a third connecting rod (26), and the first connecting rod (23) and the third connecting rod (26) are respectively arranged at two ends of the second connecting rod (24); The opening and closing assembly further comprises a connecting column (27), the connecting column (27) being fixedly sleeved inside the third connecting rod (26), and both ends of the connecting column (27) being fixedly connected to a sealing plate (28), a movable groove (32) being provided inside the sampling chamber (6), and the sealing plate (28) being rotatably connected to the inside of the movable groove (32), and one side of the sealing plate (28) being in contact with the surface of the water outlet of the connecting pipe (13), thereby facilitating the blocking of the water flow; The flip assembly includes a drive motor (29), the drive motor (29) is fixedly connected to the inside of the sampling housing (1), the output end of the drive motor (29) is fixedly connected to an elastic rod (30), the first elastic plate (19) and the fixed column (18) are both movably sleeved on the outside of the elastic rod (30), a second elastic plate (20) is provided on one side of the first elastic plate (19), the second elastic plate (20) is fixedly sleeved on the outside of the elastic rod (30), the third elastic plate (21) is movably sleeved on the elastic rod (30), and both sides of the second elastic plate (20) are fixedly connected to semicircular plates (31); The semicircular plate (31) is in the shape of a semicircle. After turning over, the semicircular surface is opposite to the flow direction of the water flow, and presents a streamlined shape in the water flow to reduce the impact of the water flow.

2. A sampling and surveying device for hydrogeological monitoring according to claim 1, characterized in that: A pull rope (4) is fixedly connected to the top of the mounting block (3).

3. A sampling and surveying device for hydrogeological monitoring according to claim 2, characterized in that: The first water inlet pipe (9) is arranged on the center line of the sampling housing (1) and the mounting block (3); the first water inlet pipe (9) is fixedly connected to the mounting block (3) and the sampling housing (1); the outer surface of the second water inlet pipe (10) fits the inner diameter of the water inlet cavity (11), so as to facilitate the extraction of the detection water source.

4. A sampling and surveying device for hydrogeological monitoring according to claim 3, characterized in that: The second elastic plate (20) is arranged at the constricted portion of the water inlet chamber (11). The constricted portion of the water inlet chamber (11) is a region with the greatest turbulence difference, facilitating the detection of new water and stale water.

5. A sampling and surveying device for hydrogeological monitoring according to claim 4, characterized in that: The diameter of the float (16) is smaller than the inner surface diameter of the sampling tube (15), so that the water flow for sampling can flow into the interior of the sampling tube (15) better. The diameter of the float (16) is larger than the diameter of the connecting tube (13), so that the water flow can be blocked.

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