一种地下水定位取样设备
By combining edge-mounted wheels with sensors on the sampling equipment, the problem of inaccurate depth positioning in traditional sampling devices is solved, enabling high-precision groundwater sampling and ensuring the representativeness of water samples and the accuracy of test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING ACAD OF AGRI SCI
- Filing Date
- 2025-06-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing groundwater sampling devices rely on the length of the winch traction rope to determine the sampling depth, which is easily affected by factors such as water flow, buoyancy, and friction. This can cause the sampling container to fail to reach the preset depth accurately, affecting the representativeness of the water sample and the test results.
The system combines edge-mounted wheels with sensors. The edge-mounted wheels roll close to the well casing wall, driving the turntable to rotate. Incremental rotary encoders, Hall effect sensors, or photoelectric sensors are used to detect the turntable parameters. The sampling depth is calculated by the control components, and the sampling operation is controlled by an electric valve.
It achieves high-precision depth positioning, avoids the influence of buoyancy, ensures that the sampling container accurately reaches the target depth, improves the representativeness of water samples and the reliability of test results, and enhances the stability and ease of operation of the equipment.
Smart Images
Figure CN224518247U_ABST
Abstract
Claims
1. A groundwater positioning and sampling apparatus, characterized by, The system includes a support frame (10), an inner side of which is provided with a sampling bucket (20), which is fixed to the support frame (10) and has an inlet and outlet. An electric valve (30) is also installed at the inlet and outlet to open or close the inlet and outlet. An edge-adhering wheel (50) is provided on the outer side of the support frame (10), which is rotatably connected to the support frame (10) and is used to adhere to the pipe wall of the well pipe for rolling. A turntable (52) is fixed to one side of the rotating shaft of the edge-adhering wheel (50), and a sensor is provided on the wheel frame (51) of the edge-adhering wheel (50) corresponding to the position of the turntable (52) so that the sensor can detect the rotation parameters of the turntable (52).
2. A groundwater locating and sampling apparatus according to claim 1, wherein, The sensor is configured using an incremental rotary encoder.
3. The groundwater positioning and sampling apparatus of claim 1, wherein, The sensor is a Hall sensor (41), and the turntable (52) has at least one magnetic element (42) corresponding to the Hall sensor (41), so that the Hall sensor (41) outputs a fixed voltage signal every time the turntable (52) rotates.
4. The groundwater positioning and sampling apparatus of claim 1, wherein, The sensor is a photoelectric sensor (43), and the turntable (52) is provided with a plurality of light-transmitting holes (44) evenly distributed along the circumference, so that the photoelectric sensor (43) can detect the rotation parameters of the turntable (52) through the light-transmitting holes (44).
5. The groundwater positioning and sampling apparatus of claim 1, wherein, It also includes a tensioning mechanism (60), which is located between the wheel frame (51) and the support frame (10) and applies tension to the wheel frame (51) so that the edge-adhering wheel (50) on the wheel frame (51) is in close contact with the pipe wall.
6. A groundwater locating and sampling apparatus according to claim 5, wherein, The tensioning mechanism (60) adopts a torsion spring (61) structure. The torsion spring (61) is sleeved on the first rotating shaft (17) connecting the wheel frame (51) and the support frame (10). One end is fixed to the support frame (10), and the other end abuts against the wheel frame (51).
7. A groundwater locating and sampling apparatus as defined in claim 5 wherein, The tensioning mechanism (60) is provided with an adjusting spring (62), an adjusting slide (63) and an auxiliary rod (64). A support shaft (16) is provided between the base frame (14) and the top frame (13) of the support frame (10). The adjusting spring (62) and the adjusting slide (63) are sequentially sleeved on the support shaft (16). The wheel frame (51) of the edge-attaching wheel (50) is rotatably connected to the support frame (10). The two ends of the auxiliary rod (64) are rotatably connected to the wheel frame (51) and the adjusting slide (63) respectively. Through the linkage of the adjusting spring (62), the adjusting slide (63) and the auxiliary rod (64), a lateral thrust is applied to the wheel frame (51), thereby making the edge-attaching wheel (50) stick tightly to the pipe wall.
8. The groundwater positioning and sampling apparatus of claim 1, wherein, It also includes a control component that is electrically connected to the sensor and the electric valve (30) to receive parameters sent by the sensor, calculate the descent depth of the sampling device, and control the electric valve (30) to open or close.
9. A groundwater locating and sampling apparatus according to claim 8, wherein, The top of the sampling bucket (20) is provided with a first opening (21), and the electric valve (30) is provided with a first valve (31). The first valve (31) is installed at the first opening (21) to open or close the first opening (21).
10. A groundwater locating and sampling apparatus as defined in claim 9, wherein, The bottom of the sampling bucket (20) is further provided with a second opening (22), and the electric valve (30) is provided with a second valve (32) installed at the second opening (22) to open or close the second opening (22).