A groundwater collection device for use in hydrological engineering
The groundwater sampling device, with its float control and filter shell design, solves the problems of atmospheric impurity pollution and unstable sampling, ensuring the accuracy and stability of water sample testing and adapting to sampling wells of different diameters.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING HONGSHI SECURITY TECH CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-24
AI Technical Summary
Existing groundwater sampling devices cannot effectively prevent atmospheric impurities from contaminating water samples, and the sampling process is unstable, affecting the accuracy and representativeness of the test results.
A groundwater sampling device was designed, which includes a float control, a filter shell, and a stabilizing structure. The sampling tube is lowered by controlling the float, impurities are intercepted by the filter shell, and collisions with the well wall are reduced by the stabilizing structure, thus ensuring the authenticity and stability of the collected water samples.
This reduces atmospheric pollution, improves the accuracy and representativeness of water sample testing, and enhances the stability and adaptability of the sampling process.
Smart Images
Figure CN224552793U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of groundwater collection devices, and more specifically, to a groundwater collection device used in hydrological engineering. Background Technology
[0002] Hydrological engineering monitoring covers two main categories: surface water and groundwater. Groundwater monitoring, in particular, enables real-time monitoring of regional geological dynamics and pollution levels, providing crucial data support and decision-making references for geological environmental protection and engineering construction. The standard operating procedure involves: personnel selecting monitoring locations, drilling groundwater sampling boreholes, and installing specialized equipment within the boreholes to obtain groundwater samples.
[0003] Currently, groundwater is typically collected by connecting a bucket to a rope. However, this method has the following problems:
[0004] 1. The above method can only collect samples from the surface of groundwater. However, because the surface of the groundwater is directly exposed to the air environment for a long time, various impurities and oxygen in the atmosphere easily dissolve or adhere to the surface of the water. These foreign pollutants will mix into the collected water samples, causing significant deviations in the test results and failing to accurately reflect the actual condition of the groundwater.
[0005] 2. During groundwater sampling operations, natural impurities present in the water body will inevitably be pumped or collected along with the target groundwater. These impurities can interfere with instrument readings, clog precision filter membranes or pipelines, and affect the accuracy of measurements during subsequent water quality analysis and testing, thereby interfering with the final water quality assessment results and affecting their representativeness and reliability.
[0006] 3. Existing groundwater sampling devices generally suffer from a deficiency: they lack an effective stabilizing structure. When the device is lowered along the sampling well, it is prone to repeated collisions and scrapes against the rough well wall. This violent shaking and collision not only makes the lowering process extremely unstable and difficult to control, but may also disturb the water in the well or damage the sampling device itself, ultimately compromising the representativeness and integrity of the collected water sample.
[0007] Therefore, there is an urgent need for a groundwater sampling device for use in hydrological engineering. Utility Model Content
[0008] (a) Technical problems to be solved
[0009] In view of the problems existing in the prior art, this utility model provides a groundwater collection device for hydrological engineering to solve the technical problems mentioned in the background art.
[0010] (II) Technical Solution
[0011] To achieve the above objectives, this utility model provides the following technical solution: a groundwater sampling device for hydrological engineering, comprising a sampling cylinder, an exhaust valve fixedly connected to and connected to the upper end of the sampling cylinder, two lifting rings fixedly connected to the upper end of the sampling cylinder, a rotating ball rotatably connected to the lower end of the sampling cylinder, the rotating ball having a through hole, two winding rods rotatably connected to the lower end of the sampling cylinder, the winding rods being fixedly connected to the rotating ball, a winding rope wound around the winding rods, a limit ring fixedly connected to the sampling cylinder, a float slidably connected to the sampling cylinder, the float engaging with the limit ring, the two winding ropes being fixedly connected to the float, a fixing plate fixedly connected to the winding rods, a torsion spring fixedly connected between the fixing plate and the sampling cylinder, a filter structure provided at the lower end of the sampling cylinder, and a stabilizing structure provided in the sampling cylinder.
[0012] The present invention is further configured such that the filter structure includes a filter shell, the filter shell is rotatably connected to the lower part of the sampling cylinder, and a fan blade is fixedly connected inside the filter shell.
[0013] The present invention is further configured such that a cleaning plate is fixedly connected to the sampling cylinder, and the cleaning plate is in contact with the lower side of the filter shell.
[0014] The present invention is further configured such that the stabilizing structure includes a fixed ring, the fixed ring is fixedly connected to the sampling cylinder, the fixed ring is hinged with a hinge rod with equal circumferential spacing, the hinge rod is equipped with a rotating wheel, the sampling cylinder is sleeved with a connecting ring, and the lower side of the connecting ring is rotatably connected to a connecting ring.
[0015] The present invention is further configured such that a fixed shell is fixedly connected to the lower side of the second connecting ring, a fixed rod is fixedly connected to the fixed shell, a hinge seat is slidably connected inside the fixed shell, and the fixed rod passes through the adjacent hinge seat and the two are slidably connected.
[0016] The present invention is further configured such that the fixing rod is fitted with a spring, and the two ends of the spring are respectively fixedly connected to the adjacent hinge seat one and the adjacent fixing shell, and a hinge rod two is hinged between the hinge seat and the hinge rod one.
[0017] The present invention is further configured such that the sampling cylinder is fixedly connected to a threaded sleeve, the threaded sleeve is threadedly connected to a threaded ring, and a connecting rod with equal circumferential spacing is fixedly connected between the threaded ring and the connecting ring.
[0018] (III) Beneficial Effects
[0019] Compared with the prior art, this utility model provides a groundwater collection device for hydrological engineering, which has the following beneficial effects:
[0020] 1. This utility model controls the rotation of the rotating ball by the buoyancy of the float, so that the lower end of the sampling tube enters the water surface before being opened, thereby reducing the sampling of water at the liquid surface and enabling the collected groundwater samples to truly reflect the actual condition of the water body.
[0021] 2. This utility model intercepts large-volume impurities in water through the filter shell. At the same time, during the circumferential rotation of the filter shell, the filter shell and the cleaning plate slide relative to each other, thereby the cleaning plate cleans the large-volume impurities attached to the lower side of the filter shell, reducing the probability of the filter shell being blocked.
[0022] 3. This utility model adjusts the spacing between rotating wheels by rotating the threaded ring, thereby adapting to sampling wells of different diameters. When the sampling cylinder moves downward along the sampling well, all five rotating wheels contact the inner wall of the sampling well, reducing the probability of collision between the sampling cylinder and the sampling well wall and improving the stability of the sampling process. Attached Figure Description
[0023] Figure 1 This is a front structural diagram of a groundwater collection device used in hydrological engineering according to the present invention.
[0024] Figure 2 This is a cross-sectional view of the sampling cylinder in this utility model;
[0025] Figure 3 This is a schematic diagram of the rotating ball and the winding rod in this utility model;
[0026] Figure 4 This is a schematic diagram of the limiting ring and the float in this utility model;
[0027] Figure 5 This is a schematic diagram of the structure of the filter shell and fan blades in this utility model;
[0028] Figure 6 This is a schematic diagram of the stable structure in this utility model;
[0029] Figure 7 This is a schematic diagram of the structure of the hinge rod and the fixed shell in this utility model;
[0030] Figure 8 This is a schematic diagram of the threaded sleeve and threaded ring in this utility model.
[0031] In the diagram: 1. Sampling cylinder; 2. Exhaust valve; 3. Lifting ring; 4. Rotating ball; 5. Winding rod; 6. Winding rope; 7. Limiting ring; 8. Float; 9. Fixing plate; 10. Torsion spring; 11. Filter shell; 12. Fan blade; 13. Cleaning plate; 14. Fixing ring; 15. Hinge rod one; 16. Rotating wheel; 17. Connecting ring one; 18. Connecting ring two; 19. Fixing shell; 20. Fixing rod; 21. Hinge seat; 22. Spring; 23. Hinge rod two; 24. Threaded sleeve; 25. Threaded ring; 26. Connecting rod. Detailed Implementation
[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0034] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0035] Please see Figures 1-8 A groundwater sampling device for hydrological engineering includes a sampling cylinder 1. An exhaust valve 2 is fixedly connected to and connected to the upper end of the sampling cylinder 1. Two lifting rings 3 are fixedly connected to the upper end of the sampling cylinder 1. A rotating ball 4 with a through hole is rotatably connected to the lower end of the sampling cylinder 1. Two winding rods 5 are rotatably connected to the lower end of the sampling cylinder 1. The winding rods 5 are fixedly connected to the rotating ball 4, and a winding rope 6 is wound around the winding rods 5. A limit ring 7 is fixedly connected to the sampling cylinder 1. A float 8 is slidably connected to the sampling cylinder 1, and the float 8 is limited by the limit ring 7. The two winding ropes 6 are fixedly connected to the float 8. A fixing plate 9 is fixedly connected to the winding rods 5. A torsion spring 10 is fixedly connected between the fixing plate 9 and the sampling cylinder 1. A filter structure and a stabilizing structure are provided at the lower end of the sampling cylinder 1.
[0036] Please see Figure 1 and Figure 5 The filter structure includes a filter housing 11, which is rotatably connected to the lower part of the sampling cylinder 1. A fan blade 12 is fixedly connected inside the filter housing 11. A cleaning plate 13 is fixedly connected to the sampling cylinder 1, and the cleaning plate 13 is in contact with the lower side of the filter housing 11.
[0037] Specifically, in this embodiment, when groundwater needs to be collected, the rope is tied to two lifting rings 3, and then the sampling tube 1 is lowered into the sampling well. In the initial state, the rotating ball 4 is in a sealed state with the sampling tube 1, and the exhaust valve 2 is in an open state. After the sampling tube 1 extends below the water surface, as the sampling tube 1 continues to move downward, the float 8 contacts the water surface. Under the action of buoyancy, as the sampling tube 1 continues to move downward, the sampling tube 1 and the float 8 undergo relative displacement. The float 8 pulls the winding rope 6, and the winding rope 6 drives the adjacent winding rod 5 to rotate 90°. The torsion spring 10 is tightened. Under the action of pressure difference, the groundwater enters the sampling tube 1 through the through holes of the filter shell 11 and the rotating ball 4, and the air in the sampling tube 1 is discharged from the exhaust valve 2, thereby completing the sampling of water below the liquid surface.
[0038] In the above process, after the groundwater passes through the filter shell 11, the water impacts the fan blade 12, and the fan blade 12 drives the filter shell 11 to rotate circumferentially along the lower part of the sampling cylinder 1. At this time, the filter shell 11 intercepts large-volume impurities in the water. At the same time, during the circumferential rotation of the filter shell 11, the filter shell 11 and the cleaning plate 13 slide relative to each other. In this way, the cleaning plate 13 cleans the large-volume impurities attached to the lower side of the filter shell 11, reducing the probability of the filter shell 11 being blocked.
[0039] After sampling is completed, the upper sampling tube 1 is used. When the float 8 moves away from the liquid surface, the float 8 returns to its original position under its own weight. Under the action of the torsion spring 10, the two winding rods 5 and the rotating ball 4 return to their original positions, thus completing the sealing of the lower end of the sampling tube 1 and completing the collection of groundwater.
[0040] Please see Figures 5-8 The stabilizing structure includes a fixed ring 14, which is fixedly connected to the sampling cylinder 1. The fixed ring 14 is hinged to a first hinge rod 15 with equal circumferential spacing. A rotating wheel 16 is mounted on the first hinge rod 15. The sampling cylinder 1 is fitted with a first connecting ring 17, and a second connecting ring 18 is rotatably connected to the lower side of the first connecting ring 17. A fixed shell 19 is fixedly connected to the lower side of the second connecting ring 18, and a fixed rod 20 is fixedly connected to the fixed shell 19. A hinge seat 21 is slidably connected inside the fixed shell 19. The fixed rod 20 passes through the adjacent hinge seat 21 and the two are slidably connected; the fixed rod 20 is fitted with a spring 22, the two ends of the spring 22 are fixedly connected to the adjacent hinge seat 21 and the adjacent fixed shell 19 respectively, and the hinge seat 21 and the hinge rod 15 are hinged together by a second hinge rod 23; the sampling cylinder 1 is fixedly connected with a threaded sleeve 24, the threaded sleeve 24 is threaded with a threaded ring 25, and the threaded ring 25 and the connecting ring 17 are fixedly connected by a circumferentially spaced connecting rod 26.
[0041] Specifically, in this embodiment, before the sampling cylinder 1 is lowered, the threaded ring 25 is rotated, and the threaded ring 25 moves downward along the threaded sleeve 24. The threaded ring 25, through the connecting rod 26, moves the connecting ring 17 and the connecting ring 18 downward along the sampling cylinder 1. The connecting ring 18 drives the fixed shell 19 downward, and the fixed shell 19 drives the hinge seat 21 downward. This causes the hinge rod 15 to swing downward through the hinge rod 23. When the five hinge rods 15 swing downward, the five rotating wheels 16 move away from each other. According to the diameter of the sampling well, the distance between the five rotating wheels 16 is adjusted so that when the sampling cylinder 1 moves downward along the sampling well, all five rotating wheels 16 are within the sampling well. The inner wall contact reduces the probability of collision between the sampling cylinder 1 and the sampling well wall, improving the stability of the sampling cylinder 1 during the sampling process. When a protrusion appears on the inner wall of the sampling well, the protruding well wall will squeeze the rotating wheel 16, and the hinge rod 15 will swing upward. The hinge rod 15 drives the hinge seat 21 to slide upward along the adjacent fixed shell 19 through the hinge rod 23. At the same time, the hinge seat 21 squeezes the adjacent spring 22. After the rotating wheel 16 loses contact with the protrusion of the sampling well wall, the hinge rod 15 will return to its original position under the elastic force of the spring 22. Each rotating wheel 16 of this device has an individual spring 22 to provide the squeezing force, so that this device can adapt to sampling wells with different structural shapes.
[0042] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
Claims
1. A groundwater sampling device for hydrological engineering, comprising a sampling tube (1), wherein an exhaust valve (2) is fixedly connected to and communicated with the upper end of the sampling tube (1), and two lifting rings (3) are fixedly connected to the upper end of the sampling tube (1), characterized in that: The lower end of the sampling tube (1) is rotatably connected to a rotating ball (4), which has a through hole. The lower end of the sampling tube (1) is rotatably connected to two winding rods (5), which are fixedly connected to the rotating ball (4). The winding rods (5) are wound with winding ropes (6). The sampling tube (1) is fixedly connected to a limiting ring (7). The sampling tube (1) is slidably connected to a float (8), which is limited by the limiting ring (7). The two winding ropes (6) are fixedly connected to the float (8). The winding rods (5) are fixedly connected to a fixing plate (9). A torsion spring (10) is fixedly connected between the fixing plate (9) and the sampling tube (1). The lower end of the sampling tube (1) is provided with a filter structure. The sampling tube (1) is provided with a stabilizing structure.
2. The groundwater collection device for hydrological engineering according to claim 1, characterized in that: The filter structure includes a filter shell (11), which is rotatably connected to the lower part of the sampling cylinder (1), and a fan blade (12) is fixed inside the filter shell (11).
3. The groundwater collection device for hydrological engineering according to claim 2, characterized in that: The sampling tube (1) is fixedly connected to a cleaning plate (13), which is in contact with the lower side of the filter shell (11).
4. The groundwater collection device for hydrological engineering according to claim 1, characterized in that: The stabilizing structure includes a fixed ring (14), which is fixed to the sampling cylinder (1). The fixed ring (14) is hinged with a hinge rod (15) with equal spacing in the circumferential direction. A rotating wheel (16) is installed on the hinge rod (15). A connecting ring (17) is sleeved on the sampling cylinder (1). A connecting ring (18) is rotatably connected to the lower side of the connecting ring (17).
5. A groundwater collection device for hydrological engineering according to claim 4, characterized in that: A fixed shell (19) is fixedly connected to the lower side of the second connecting ring (18), and a fixed rod (20) is fixedly connected to the fixed shell (19). A hinge seat (21) is slidably connected inside the fixed shell (19), and the fixed rod (20) passes through the adjacent hinge seat (21) and the two are slidably connected.
6. A groundwater collection device for hydrological engineering according to claim 5, characterized in that: The fixed rod (20) is fitted with a spring (22), and the two ends of the spring (22) are fixedly connected to the adjacent hinge seat (21) and the adjacent fixed shell (19) respectively. The hinge seat (21) and the hinge rod one (15) are hinged together with the hinge rod two (23).
7. A groundwater collection device for hydrological engineering according to claim 6, characterized in that: The sampling cylinder (1) is fixedly connected to a threaded sleeve (24), the threaded sleeve (24) is threadedly connected to a threaded ring (25), and a circumferentially spaced connecting rod (26) is fixedly connected between the threaded ring (25) and the connecting ring (17).