A sampling instrument for monitoring water sources in hydrogeological surveys

Abstract

This invention discloses a water source monitoring and sampling instrument for hydrogeological surveys, comprising a central cylinder and several sampling components. Each sampling component includes a sampling housing with an inlet and an outlet. A control housing is connected to the bottom of the central cylinder, which houses a first motor and a battery. The first motor drives a first threaded rod to rotate, causing a first control block and a second control block to move up and down. Through the linkage of a stop block, a through rod, a first rack, a transmission gear, and a second rack, the inlet of the cleaning valve core is opened or closed, enabling stratified, depth-controlled sampling of water samples at different depths. The threaded groove on the cleaning valve core engages with a locking block on the fixing frame, rotating for self-cleaning and anti-clogging during opening and closing. A counterweight is detachably connected to the bottom of the control housing to adjust the center of gravity and self-weight, enhancing flow resistance stability. This invention features a compact structure, flexible and reliable sampling, and effectively improves the accuracy and efficiency of water source sampling in hydrogeological surveys.

Description

Technical Field

[0001] This invention relates to the field of water source sampling device technology, and in particular to a water source monitoring and sampling instrument for hydrogeological surveys. Background Technology

[0002] Hydrogeological survey refers to the systematic study of the hydrogeological conditions of a certain area. During the hydrogeological survey, it is often necessary to sample water sources to obtain representative water samples for experimental analysis. In the current technology, water source monitoring and sampling instruments are used to complete the water source sampling operation.

[0003] However, traditional sampling devices struggle to perform stratified, fixed-depth sampling of water samples at different depths. Samples from different depths are easily confused during sampling, leading to decreased accuracy in monitoring results and failing to meet the requirements of refined hydrogeological surveys. Furthermore, the inlet channels of existing sampling devices are easily clogged by suspended impurities in the water, causing sampling interruptions or failures, affecting sampling efficiency and reliability, especially in waters with high sediment content or poor water quality. In waters with high flow velocities, the lateral impact of the water flow can cause the sampling instrument to deviate, making it difficult to stably maintain the preset sampling point, resulting in decreased sampling accuracy and insufficient sample representativeness.

[0004] To address the aforementioned problems, this invention proposes a water source monitoring sampling instrument for hydrogeological surveys. This sampling instrument can effectively perform stratified sampling, prevent clogging, and effectively ensure stability. Summary of the Invention

[0005] The present invention aims to provide a water source monitoring and sampling instrument for hydrogeological surveys, in order to solve the problems of existing water source monitoring and sampling instruments being unable to effectively perform stratified sampling, being prone to clogging, and having insufficient stability.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A water source monitoring sampling instrument for hydrogeological surveys includes a central cylinder and several sampling components. Each sampling component includes a sampling shell with an inlet and an outlet. Several sampling shells are connected to the outside of the central cylinder. A control shell is connected to the bottom of the central cylinder. The control shell houses a first motor and a battery for power supply. The output shaft of the first motor is connected to a first threaded rod, which extends into the interior of the central cylinder. A first control block is threadedly connected to the first threaded rod and located within the central cylinder. Inside the body, a first limiting rod is connected to the control housing, and the first limiting rod passes through the first control block. A stop block is set inside the central cylinder, and the stop block is used to abut against the first control block. A through rod is connected to the stop block, and the through rod passes through the central cylinder to the inside of the sampling housing. A spring is sleeved on the through rod, and the through rod is connected to a first rack. A transmission gear is rotatably connected inside the sampling housing. The transmission gear meshes with the first rack, and the transmission gear also meshes with a second rack. The second rack is connected to the switch cleaning valve core, and the switch cleaning valve core slides inside the water inlet.

[0008] Furthermore, the sampling housing is divided into two chambers. A second motor is installed inside the control housing. The output shaft of the second motor is connected to a second threaded rod. The second threaded rod is threaded to a moving block. The moving block is fixedly connected to a second limiting rod. One end of the second limiting rod is fixedly connected to the moving block, and the other end is slidably connected to the inner wall of the central cylinder. The second limiting rod is slidably connected to a second control block. The second control block is fixedly connected to a sliding block. A limiting groove is correspondingly provided on the first control block, and the sliding block slides within the limiting groove.

[0009] Furthermore, the switch cleaning valve core is rotatably connected to the second rack, the switch cleaning valve core is provided with a threaded groove, and a fixing frame is fixedly connected to the inner side of the sampling housing near the water inlet. The fixing frame is fixedly connected with a locking block, which is embedded in the threaded groove.

[0010] Furthermore, a connecting buckle is fixedly connected to the top of the central cylinder, which is used to connect with the rope.

[0011] Furthermore, a screw is fixedly connected to the bottom of the control housing, a bolt is threaded onto the screw, and counterweights of different weights are fitted onto the screw.

[0012] Furthermore, one or more of the following sensors can be selectively placed inside the sampling housing: a temperature sensor, a conductivity sensor, a pH sensor, and a water pressure sensor, for monitoring temperature, conductivity, pH, and water pressure data.

[0013] Furthermore, there is a 0.1-0.3mm gap between the switch cleaning valve core and the water inlet, and a line seal is achieved through a sealing ring design.

[0014] Furthermore, the first and second motors are connected to the ground via cables or wireless communication.

[0015] Furthermore, a sealing ring is fixedly connected to the outer wall of the central cylinder, and the sealing ring is fitted onto the through rod.

[0016] Furthermore, both the first and second control blocks have convex structures, while the abutment has an arc-shaped structure.

[0017] The principle and beneficial effects of this technical solution:

[0018] (1) In the device of the present invention, the first motor drives the first threaded rod to rotate, thereby enabling the first control block and the second control block to move up and down. When the first control block moves to the horizontal position with the stop block, it will contact the stop block and push it to move outward. Thus, through the linkage of the through rod, the first rack, the transmission gear and the second rack, the switch cleaning valve core is driven to move inward, thereby opening the water inlet and completing the collection of water samples at this depth. After the sampling at this depth is completed, the first control block and the second control block continue to move. Under the action of the spring, the switch cleaning valve core will re-seal the water inlet, completing a single sampling. Therefore, the device of the present invention can collect and store water samples at different depths separately, ensuring that water samples at different depths do not interfere with each other and improving the accuracy of the test results.

[0019] (2) In the device of the present invention, the second motor can drive the second threaded rod to rotate, thereby enabling the second control block to slide horizontally left and right. The horizontal position of the second control block determines whether it can contact the stop block during the up-and-down sliding process, thus enabling independent control of another chamber within the same sampling housing. Therefore, the device of the present invention can complete secondary sampling at the same depth, meeting the diverse sampling needs in hydrogeological surveys.

[0020] (3) In the device of the present invention, a threaded groove is provided on the switch cleaning valve core, and a fixed frame is fixedly connected inside the sampling housing. A locking block is fixedly connected on the fixed frame. The locking block engages in the threaded groove. Therefore, when the switch cleaning valve core moves horizontally under the drive of the second rack, the locking block cooperates with the threaded groove, forcing the valve core to rotate and scrape and clean the inlet end face and inlet pipe, effectively preventing impurities from clogging and improving sampling efficiency and reliability.

[0021] (4) The bottom of the control housing of the device of the present invention is detachably connected with counterweights of different weights. By adding, removing or replacing counterweights of different weights, the overall center of gravity and weight of the device can be adjusted, thereby enhancing its resistance to lateral impact in high-speed water flow and keeping the sampling point stable. Therefore, the device of the present invention can flexibly adjust the weight and center of gravity of the device according to the actual situation, enhance its resistance to lateral impact, ensure the stability of the sampling point, and improve the representativeness of the sample. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the device structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the front structure of the device of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a single sampling component of the device of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of a single sampling component of the device of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal structure of the control housing and the central cylinder of the device of the present invention;

[0027] Figure 6 This is a schematic diagram of the internal structure of a single sampling component of the device of the present invention from another direction;

[0028] Figure 7 This is an enlarged view of the internal structure of the sampling housing of the device of the present invention;

[0029] Figure 8 This is a top-view enlarged view of the internal structure of the sampling housing of the device of the present invention.

[0030] In the diagram: 1. Central cylinder; 2. Sampling component; 3. Control housing; 4. First threaded rod; 5. First limiting rod; 6. First control block; 7. Second limiting rod; 8. Second control block; 11. Connecting buckle; 12. Screw; 13. Bolt; 14. Counterweight; 21. Sampling housing; 22. Water inlet; 23. Switch cleaning valve core; 24. Abutment block; 25. Through rod; 26. Sealing ring; 27. First rack; 28. Transmission gear; 29. ​​Second rack; 31. First motor; 32. Second motor; 33. Second threaded rod; 34. Moving block; 35. Battery; 211. Fixing frame; 212. Locking block; 213. Water outlet; 231. Threaded groove; 61. Limiting groove; 81. Sliding block. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0032] like Figures 1-8 The sampler shown is a water source monitoring sampler for hydrogeological surveys, comprising a central cylinder 1 and a sampling component 2.

[0033] The central cylinder 1 is a cylindrical structure with a hollow interior. The bottom of the central cylinder 1 is connected to the control housing 3. Four sampling components 2 are fixedly connected to the outside of the central cylinder 1. The internal structure of the four sampling components 2 is the same, and the connection method between the four sampling components 2 and the central cylinder 1 is the same. The top of the central cylinder 1 is provided with a connecting buckle 11 for hanging a rope. By connecting the rope with the connecting buckle 11, the main body of the device can be lowered to different depths to collect water samples. The bottom end of the control housing 3 is fixedly connected to a screw 12. A bolt 13 is provided on the screw 12. Different weights of counterweights 14 are placed on the screw 12. By placing counterweights 14 of different weights, the overall center of gravity and weight of the sampling instrument can be adjusted to enhance its resistance to lateral impact in high-speed water flow and maintain the stability of the sampling point.

[0034] A first motor 31 is fixedly connected inside the control housing 3. The output shaft of the first motor 31 is coaxially connected to a first threaded rod 4. The first threaded rod 4 passes through the control housing 3 and rotates inside the central cylinder 1. The top end of the first threaded rod 4 is rotatably connected to the top of the inner wall of the central cylinder 1. A first limiting rod 5 is fixedly connected to the side of the first motor 31. The first limiting rod 5 passes through the control housing 3, and its top end is fixedly connected to the top of the inner wall of the central cylinder 1. A first control block 6 is threadedly connected to the first threaded rod 4. The left side of the first control block 6 is penetrated by the first limiting rod 5. The left end of the first control block 6 has an arc-shaped convex structure. Through the above structural arrangement, the first motor 31 can cause the first control block 6 to move up and down along the first threaded rod 4. A second motor 32 is also provided inside the control housing 3. The second motor 32 is coaxially connected to a second threaded rod 33. The second threaded rod 33 is rotatably connected inside the control housing 3. A movable block 34 is threadedly connected to the control housing 3. A second limiting rod 7 is fixedly connected to the movable block 34. The second limiting rod 7 passes through the control housing 3. The top end of the second limiting rod 7 is slidably connected to the inner wall of the central cylinder 1. A second control block 8 is slidably connected to the second limiting rod 7. The right end of the second control block 8 has an arc-shaped convex structure. A sliding block 81 is fixedly connected to the second control block 8. A limiting groove 61 is provided on the first control block 6 corresponding to the sliding block 81. The sliding block 81 is slidably connected in the limiting groove 61. With the above structure, starting the first motor 31 can drive the first control block 6 and the second control block 8 to move up and down along the threaded rod. Starting the second motor 32 can drive the second control block 8 to move left and right along the limiting groove 61. The first motor and the second motor are connected to the ground via cable or wireless communication. A storage battery 35 is provided inside the control housing 3. The storage battery 35 is used to power the first motor 31 and the second motor 32.

[0035] The sampling component 2 includes a sampling housing 21, which is an annular structure. The inner side of the housing is fixedly connected to the outer wall of the central cylinder 1. The sampling housing 21 is divided into two chambers by a partition plate. Each chamber is equipped with a water inlet 22. Each chamber can optionally house one or more of a temperature sensor, conductivity sensor, pH sensor, and water pressure sensor for monitoring temperature, conductivity, pH, and water pressure data. A switch-on cleaning valve core 23 is installed inside the water inlet 22. A 0.1-0.3mm gap exists between the switch-on cleaning valve core 23 and the water inlet 22, and a line seal is achieved through a sealing ring design. The switch-on cleaning valve core 23 controls the water inlet. The sampling component 2 also includes a stop block 24, the end of which is arc-shaped, and a through rod 25 is fixedly connected to the tail end of the stop block 24. A spring is sleeved on the through rod 25, and the spring connects the inner wall of the central cylinder 1 to the tail end of the stop block 24. The through rod 25 passes through into the sampling housing 21. A sealing ring 26 is fixedly connected to the outer wall of the central cylinder 1 and is sleeved on the through rod 25. The sealing ring 26 is used to enhance the airtightness and prevent the sampling water inside the sampling housing 21 from entering the central cylinder 1. A first rack 27 is fixedly connected to the through rod 25. A transmission gear 28 is rotatably connected inside the sampling housing 21. The lower side of the transmission gear 28 meshes with the first rack 27, and the upper side of the transmission gear 28 meshes with the second rack 29. The second rack 29 is rotatably connected to a switch cleaning valve core 23, which has a threaded groove 231. A fixing frame 211 is fixedly connected to the inner wall of the sampling housing 21. The fixing frame 211 has a square frame structure, and a locking block 212 is fixedly connected to the fixing frame 211, which meshes in the threaded groove 231. With the above structure, when the first control block 6 and the second control block 8 reach the position horizontal with the abutment block 24, the first control block 6 or the second control block 8 can push the abutment block. The first rack 27 moves outward, causing the transmission gear 28 to rotate. The rotation of the transmission gear 28 then causes the second rack 29 to move inward, which in turn causes the cleaning valve core 23 to move inward. This prevents the cleaning valve core 23 from blocking the inlet 22, allowing external water samples to enter the sampling housing 21 and be collected. When the first control block 6 and the second control block 8 move away from the position horizontal with the abutment 24, the spring causes the abutment 24 to spring back to its initial position, and the cleaning valve core 23 re-blocks the inlet 22, preventing water samples from entering the sampling housing 21. The sampling housing 21 also has an outlet 213 on its side for discharging and collecting the collected water samples.

[0036] The specific implementation process is as follows: First, the device of the present invention is connected to the rope using the connecting buckle 11. The rope allows the device to be lowered to different depths for sampling. The device has four sampling components 2, each with eight sampling chambers, allowing for two samplings at four different depths. After lowering the device to the corresponding depth, the first motor 31 is activated. The first motor 31 drives the first threaded rod 4 to rotate, causing the first control block 6 and the second control block 8 to move to the bottommost sampling component 2 position. In the initial state, the second motor 32 is not started, and the second control block 8 is in the initial position of its horizontal stroke and will not contact the abutment 24 corresponding to the sampling component 2. Therefore, only the first control block 6 can push the abutment 24 to move at this time. The first control block 6 pushes the abutment 24 to move, causing the first rack 27 to drive the transmission gear 28 to rotate. The rotation of the transmission gear 28 causes the switch cleaning valve core 23 to move inward, thereby opening the water inlet 22. The external water sample can enter the sampling housing 21 through the water inlet 22. At the same time, due to the design of the threaded groove 231, the fixing bracket 211 and the locking block 212, The cleaning valve core can rotate while moving horizontally, effectively cleaning the inlet 22 and preventing debris from clogging it. After sampling for a certain period, the motor continues to move upward. Once the motor leaves the bottom sampling component 2, the spring causes the stop block 24 to spring back, closing the inlet 22 and preventing external water samples from entering the bottom sampling component 2. The device is then lowered to the second required sampling depth, and the first motor 31 is similarly controlled to open the cleaning valve core 23. Water samples are collected and this process is repeated until all water samples are collected. In the device of the present invention, the second motor 32 is used to control the horizontal movement of the second control block 8. The horizontal movement distance of the second control block 8 can determine whether it can contact the abutment block 24 during the up and down movement, thereby determining whether it can control the opening and closing of the cleaning valve core 23. Therefore, during the sampling process of the device of the present invention, it is possible to perform secondary sampling at the same depth. The water sample from the secondary sampling is located in the chamber on the right side of the sampling housing 21 and is stored in the chamber on the right side of the sampling housing 21.

[0037] The above descriptions are merely embodiments of the present invention, and common technical solutions or characteristics known in the schemes are not described in detail here. For those skilled in the art, various modifications and improvements can be made without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A sampling instrument for monitoring water sources in hydrogeological surveys, characterized in that: The device includes a central cylinder (1) and several sampling components (2). Each sampling component (2) includes a sampling housing (21) with an inlet (22) and an outlet (213). Several sampling housings (21) are connected to the outside of the central cylinder (1). A control housing (3) is connected to the bottom of the central cylinder (1). A first motor (31) and a battery (35) are installed inside the control housing (3). The battery (35) is used for power supply. The output shaft of the first motor (31) is connected to a first threaded rod (4). The first threaded rod (4) passes through the interior of the central cylinder (1). The first threaded rod (4) is threadedly connected to a first control block (6). The first control block (6) is located inside the central cylinder (1). A first limiting rod (6) is connected inside the control housing (3). 5) The first limiting rod (5) passes through the first control block (6). The center cylinder (1) is provided with a stop block (24). The stop block (24) is used to abut against the first control block (6). The stop block (24) is connected to a through rod (25). The through rod (25) passes through the center cylinder (1) to the inside of the sampling housing (21). A spring is sleeved on the through rod (25). The through rod (25) is connected to a first rack (27). A transmission gear (28) is rotatably connected inside the sampling housing (21). The transmission gear (28) meshes with the first rack (27). The transmission gear (28) also meshes with a second rack (29). The second rack (29) is connected to a switch cleaning valve core (23). The switch cleaning valve core (23) slides inside the water inlet (22).

2. The hydrogeological survey water source monitoring sampling instrument according to claim 1, characterized in that: The sampling housing (21) is divided into two chambers. The control housing (3) is equipped with a second motor (32). The output shaft of the second motor (32) is connected to a second threaded rod (33). The second threaded rod (33) is threaded to a moving block (34). The moving block (34) is fixedly connected to a second limiting rod (7). One end of the second limiting rod (7) is fixedly connected to the moving block (34), and the other end is slidably connected to the inner wall of the central cylinder (1). The second limiting rod (7) is slidably connected to a second control block (8). The second control block (8) is fixedly connected to a sliding block (81). The first control block (6) is provided with a corresponding limiting groove (61). The sliding block (81) slides in the limiting groove (61).

3. The hydrogeological survey water source monitoring sampling instrument according to claim 1, characterized in that: The switch cleaning valve core (23) is rotatably connected to the second rack (29). The switch cleaning valve core (23) is provided with a threaded groove (231). A fixing frame (211) is fixedly connected to the inner side of the sampling housing (21) near the water inlet (22). A locking block (212) is fixedly connected to the fixing frame (211). The locking block (212) is embedded in the threaded groove (231).

4. The hydrogeological survey water source monitoring sampling instrument according to claim 1, characterized in that: The top of the central cylinder (1) is fixedly connected to a connecting buckle (11), which is used to connect with a rope.

5. A sampling instrument for monitoring water sources in hydrogeological surveys according to claim 1, characterized in that: The bottom of the control housing (3) is fixedly connected to a screw (12), and a bolt (13) is threaded onto the screw (12). Different weights (14) are fitted onto the screw (12).

6. The hydrogeological survey water source monitoring sampling instrument according to claim 1, characterized in that: The sampling housing (21) may contain one or more of a temperature sensor, conductivity sensor, pH sensor and water pressure sensor for monitoring temperature, conductivity, pH and water pressure data.

7. A sampling instrument for monitoring water sources in hydrogeological surveys according to claim 1, characterized in that: There is a 0.1-0.3mm gap between the switch cleaning valve core (23) and the water inlet (22), and a line seal is achieved through a sealing ring design.

8. A sampling instrument for monitoring water sources in hydrogeological surveys according to claim 1, characterized in that: The first motor (31) and the second motor (32) are connected to the ground via cable or wireless communication.

9. A sampling instrument for monitoring water sources in hydrogeological surveys according to claim 1, characterized in that: A sealing ring (26) is fixedly connected to the outer wall of the central cylinder (1), and the sealing ring (26) is sleeved on the through rod (25).

10. A sampling instrument for monitoring water sources in hydrogeological surveys according to claim 2, characterized in that: The first control block (6) and the second control block (8) are both convex structures, and the abutment block (24) is an arc-shaped structure.

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