Underground water level measuring and sampling device

Abstract

The utility model relates to the technical field of groundwater survey, in particular to a groundwater level measuring and sampling device which comprises a leading-in cylinder, a tip is arranged at the bottom of the leading-in cylinder, a lower probe rod is arranged at the top of the leading-in cylinder, a water inlet unit is arranged on the cylinder wall of the leading-in cylinder, and the water inlet unit comprises a flow guide pipe and a V-shaped flow distribution plate. One end of the flow guide pipe arranged outside the guide-in cylinder is a closed opening; a strip-shaped water inlet hole is formed in the top of the outer end of the flow guide pipe; the interior of the guide-in cylinder is connected with a liquid sensor through a supporting plate. The device is simple in structure, the number of the lower probing rods can be freely matched according to actual needs, soil is shunted through the V-shaped shunting plate in the downward probing process, when the water level probe reaches the water level, a large amount of water enters the guide-in cylinder through the flow guide pipe, information is transmitted to the monitor after the water is sensed by the liquid sensor, misjudgment is prevented, and the water level detection efficiency is improved. Meanwhile, a certain amount of water sample can be retained in the guide-in cylinder.

Description

Technical Field

[0001] This utility model relates to the field of groundwater survey technology, and in particular to a groundwater level measurement and sampling device. Background Technology

[0002] Currently, groundwater level is the most direct data reflecting the state of groundwater. It is a crucial data point in groundwater level monitoring, groundwater resource assessment, and calculation. Groundwater level monitoring typically involves drilling boreholes to install level pipes at monitoring points. Monitoring instruments are then used to measure the distance between the water level in the pipe and the top of the pipe to calculate the actual water level. This method is not very convenient and lacks sampling capabilities; if groundwater sampling is desired, a separate small bucket is required. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a groundwater level measurement and sampling device. This utility model adopts the following technical solution:

[0004] This utility model provides a groundwater level measurement and sampling device, including an inlet cylinder with a pointed bottom and a lower probe rod at the top, the lower probe rod being hollow. Four sets of water inlet components are evenly distributed circumferentially on the cylinder wall of the inlet cylinder. Each set of water inlet components includes multiple water inlet units, and the water inlet units of the same water inlet component are spaced apart axially along the cylinder wall. The lowermost water inlet unit is higher than the bottom of the inlet cylinder. Each water inlet unit includes a guide pipe penetrating the inlet cylinder and a V-shaped diverter plate located below the guide pipe. The V-shaped diverter plate is fixed to the outer wall of the inlet cylinder. The end of the guide pipe outside the inlet cylinder is closed, and the end inside the inlet cylinder is open. A strip-shaped water inlet hole is formed at the top of the outer end of the guide pipe.

[0005] The inside of the inlet tube is connected to a liquid sensor via a support plate. The liquid sensor is connected to a monitor on the ground via a cable that runs through the inlet tube and the lower probe. The support plate has several water-permeable holes, and the horizontal height of the support plate is higher than that of the uppermost guide pipe.

[0006] Preferably, the tip is threaded to the bottom of the inlet tube.

[0007] Preferably, the tip is conical.

[0008] Preferably, the lower end of the lower probe is threaded onto the top of the inlet cylinder.

[0009] Preferably, the outer wall of the lower probe has a scale.

[0010] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0011] This utility model has a simple structure and can freely match the number of probes (to determine the sampling depth) according to actual needs. During the probing process, the soil is diverted by a V-shaped diverter. When the water level probe reaches the water level, a large amount of water enters the inlet tube through the guide pipe. After being detected by the liquid sensor, the information is transmitted to the monitor to prevent misjudgment and improve the detection accuracy. At the same time, the inlet tube can retain a certain amount of water sample. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the main structure of the groundwater level measurement and sampling device of this utility model;

[0014] Figure 2 This is a cross-sectional view of the groundwater level measurement and sampling device of this utility model;

[0015] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0016] Explanation of reference numerals in the attached diagram: 1. Inlet tube; 2. Tip; 3. Lower probe rod; 4. Guide tube; 5. V-shaped diverter plate; 6. Strip-shaped water inlet hole; 8. Support plate; 9. Liquid sensor; 10. Cable. Detailed Implementation

[0017] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1 to 3 As shown, this embodiment discloses a groundwater level measurement and in-situ sampling device, including an inlet cylinder 1 and a pointed part 2 disposed at the bottom of the inlet cylinder 1. The pointed part 2 can be designed as a cone, and a threaded hole is provided at the top of the pointed part 2. The threaded hole at the top of the pointed part 2 is connected to a threaded post fixed at the bottom of the inlet cylinder 1 through a threaded structure. The top of the inlet cylinder 1 is provided with a threaded hole, which is threadedly connected to the threaded post at the lower end of the lower probe rod 3. The lower probe rod 3 is hollow, and a scale is provided on the outer wall of the lower probe rod 3.

[0019] Four sets of water inlet components are evenly distributed along the circumference of the cylinder wall of the inlet cylinder 1. The included angle between two adjacent sets of water inlet components is 90°. Each set of water inlet components includes multiple water inlet units. The water inlet units of the same water inlet component are arranged at intervals along the axial direction of the cylinder wall of the inlet cylinder 1. The water inlet unit located at the bottom is higher than the bottom of the inlet cylinder 1.

[0020] The water inlet unit includes a guide pipe 4 that penetrates the inlet cylinder 1 and a V-shaped diverter plate 5 located below the guide pipe 4. The V-shaped diverter plate 5 is fixed to the outer wall of the inlet cylinder 1. The end of the guide pipe 4 outside the inlet cylinder 1 is a closed opening, and the end of the guide pipe 4 inside the inlet cylinder 1 is an open opening. A strip-shaped water inlet hole 6 is provided at the top of the end of the guide pipe 4 that is outside the inlet cylinder 1.

[0021] A liquid sensor 9 is connected to the inside of the inlet cylinder 1 via a support plate 8. The support plate 8 is fixed to the inner wall of the inlet cylinder 1, and the liquid sensor 9 is mounted on the support plate 8. Several water-permeable holes are provided on the support plate 8, and the horizontal height of the support plate 8 is higher than the horizontal height of the uppermost guide pipe 4. The liquid sensor 9 is connected to a monitor on the ground via a cable 10 that runs through the inlet cylinder 1 and the lower probe 3. The monitor can detect the water level, which is existing technology.

[0022] The operation process of this utility model is as follows:

[0023] In use, several probe rods 3 are connected to the top of the inlet cylinder 1, and cables 10 are passed through the probe rods 3 and connected to the monitor. The tip 2 is then connected to the bottom of the inlet cylinder 1, and the inlet cylinder 1, tip 2, and probe rods 3 are pressed into the ground. During the descent, the soil is diverted by the V-shaped diversion plate 5 to avoid the diversion pipe 4 as much as possible. Groundwater enters the diversion pipe 4 through the strip-shaped inlet hole 6 and then into the inlet cylinder 1. As the liquid level in the inlet cylinder 1 rises, the groundwater comes into contact with the liquid sensor 9 after passing through the permeable holes on the support plate 8. The liquid sensor 9 transmits the information to the monitor on the ground via the cable 10 to determine the groundwater level. A scale on the outer wall of the probe rods 3 indicates the descent depth of the inlet cylinder 1. After the inlet cylinder 1 is removed, a certain amount of water remains at the bottom due to its depth. The probe rods 3 can be removed, and the remaining water sample can be poured out of the inlet cylinder 1.

[0024] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A groundwater water level measuring sampling device, characterized by: It includes an inlet tube (1), the bottom of which is provided with a pointed part (2), and the top of which is provided with a lower probe (3), which is a hollow structure; Four sets of water inlet components are evenly distributed along the circumference of the cylinder wall of the inlet cylinder (1). Each set of water inlet components includes multiple water inlet units. The water inlet units of the same water inlet component are arranged at intervals along the axial direction of the cylinder wall of the inlet cylinder (1). The height of the water inlet unit located at the bottommost position is higher than the bottom of the inlet cylinder (1). The water inlet unit includes a guide pipe (4) that passes through the inlet cylinder (1) and a V-shaped diverter plate (5) disposed below the guide pipe (4). The V-shaped diverter plate (5) is fixed on the outer wall of the inlet cylinder (1). The end of the guide pipe (4) placed outside the inlet cylinder (1) is a closed opening, and the end of the guide pipe (4) placed inside the inlet cylinder (1) is an open opening. A strip-shaped water inlet hole (6) is provided at the top of the end of the guide pipe (4) placed outside. The inside of the inlet tube (1) is connected to a liquid sensor (9) via a support plate (8). The liquid sensor (9) is connected to a monitor on the ground via a cable (10) that runs through the inside of the inlet tube (1) and the lower probe (3). The support plate (8) has several water-permeable holes. The horizontal height of the support plate (8) is higher than the horizontal height of the uppermost guide pipe (4).

2. The groundwater level measurement and sampling device according to claim 1, characterized in that: The top of the tip (2) is threaded onto the bottom of the inlet tube (1).

3. The groundwater level measuring sampling device according to claim 2, characterized in that: The tip (2) is conical.

4. The groundwater level measurement and sampling device according to claim 1, characterized in that: The lower end of the lower probe (3) is threaded onto the top of the inlet cylinder (1).

5. The groundwater level measuring sampling device according to claim 1, characterized in that: The outer wall of the lower probe (3) has a scale.

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