A portable groundwater sampling device for agricultural fields

Abstract

The utility model discloses a kind of farmland underground water sampling devices of portable handling, including connecting rod, mounting seat and sampling cup, mounting seat is screw mounted in the bottom of connecting rod, sampling cup is screw mounted in the bottom of mounting seat, further include sampling assembly and open circuit component, sampling assembly includes for sampling underground water, open circuit component includes for sampling cup to open circuit, to avoid sampling obstruction. The utility model is strong in portability, sampling efficiency is high, each component is assembled by thread and clamping mode, after disassembly, small and exquisite, light and handy, single person can easily carry, adapt to the transfer needs of different farmland sampling point, the spiral piece of open circuit component can break soil, gravel, root system and other obstacles, ensure that device smoothly down to target depth;Sampling assembly can synchronously collect impurity water sample and clean water sample, without multiple operations, greatly shorten sampling time.

Description

Technical Field

[0001] This utility model relates to the field of farmland groundwater sampling technology, specifically to a lightweight and portable farmland groundwater sampling device. Background Technology

[0002] In current farmland groundwater sampling operations, the commonly used sampling devices are mostly composed of a metal rod of fixed length and an integrated sampling container. When using them, multiple people need to work together to move the device to the sampling point. Then, they need to press the rod down directly by manpower or use simple tools to beat it so that the sampling container breaks through the soil layer and is inserted into the groundwater. After the container is filled with water sample, they work together to pull the device to complete the sampling.

[0003] However, these existing technologies have significant limitations in practical applications: On the one hand, traditional devices are mostly integrated designs, with the rod and sampling container inseparable. They are large and heavy, making them difficult for a single person to carry, especially when transporting them between different farmland sampling points. This requires multiple people and consumes a lot of manpower and time, making them unsuitable for the needs of scattered farmland sampling. On the other hand, existing devices lack targeted opening structures. In farmland with compacted soil containing gravel or crop roots, simply relying on manual pressing or pounding is insufficient to allow the sampling container to descend smoothly. Often, the device gets stuck by impurities and cannot reach the target sampling depth, resulting in sampling failure. At the same time, most sampling containers can only collect a single water sample. If it is necessary to obtain both raw water samples containing impurities and filtered clean water samples simultaneously, the raw water sample must be collected first, the device must be disassembled and the container cleaned, and then the device must be lowered again to collect the clean water sample. This multiple operation is not only cumbersome but also significantly prolongs the sampling time, resulting in low efficiency. Utility Model Content

[0004] The problem this invention aims to solve is to provide a lightweight and portable agricultural groundwater sampling device. This invention is highly portable and has high sampling efficiency. The components are assembled by threads and snap-fit ​​connections. After disassembly, it is compact and lightweight, and can be easily carried by a single person. It is suitable for the transportation needs of different agricultural sampling points. The spiral component of the open-path component can break through obstacles such as soil, gravel, and roots to ensure that the device can smoothly descend to the target depth. The sampling component can simultaneously collect water samples containing impurities and clean water samples without multiple operations, which greatly shortens the sampling time.

[0005] The technical solution provided by this utility model to solve the above problems is as follows: a lightweight and portable farmland groundwater sampling device, including a connecting rod, a mounting base and a sampling cup. The mounting base is threadedly installed at the bottom of the connecting rod, and the sampling cup is threadedly installed at the bottom of the mounting base. It also includes a sampling component and an opening component. The sampling component is used for sampling groundwater, and the opening component is used for opening the circuit for the sampling cup to prevent sampling from being obstructed.

[0006] More preferably, the sampling assembly includes a sliding ring, a filter frame, and a blocking ring. The sliding ring is slidably connected to the outer wall of the sampling cup, the filter frame is snapped into the inside of the sampling cup, and the blocking ring is snapped into the top of the filter frame.

[0007] More preferably, a ring of water inlets is evenly distributed around the top of the sampling cup, and the sliding ring moves to cover the water inlets on the sampling cup.

[0008] More preferably, the outer ring of the filter frame is concave, the middle is convex, and the middle of the filter frame has water filtration holes.

[0009] More preferably, the baffle ring is used to block water and guide the water flow, and the diameter of the baffle ring is larger than the diameter of the middle part of the filter frame.

[0010] More preferably, the open circuit assembly includes a mounting plate and a screw, with the mounting plate fixed to the bottom of the sampling cup and the screw snapped onto the mounting plate.

[0011] Compared with the prior art, the advantages of this utility model are: it is highly portable and has high sampling efficiency. The components are assembled by threads and snap-fit, and after disassembly, it is small in size and lightweight, which can be easily carried by a single person. It is suitable for the transportation needs of different farmland sampling points. The spiral part of the open-path component can break through obstacles such as soil, gravel, and roots to ensure that the device can smoothly descend to the target depth. The sampling component can simultaneously collect water samples containing impurities and clean water samples without multiple operations, which greatly shortens the sampling time.

[0012] It has a wide range of applications, requires no external power equipment, and can open and descend by manual rotation. It is suitable for farmland environments without power supply and can cope with complex geological conditions such as compacted soil and many impurities.

[0013] It is easy to operate, with simple assembly and disassembly processes. No professional skills are required, and ordinary operators can quickly get started, reducing the technical threshold for farmland groundwater sampling. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the first partial cross-sectional three-dimensional structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the second partial cross-sectional three-dimensional structure of this utility model.

[0018] Figure 4 This is a cross-sectional three-dimensional structural diagram of the third part of this utility model.

[0019] The attached diagram is labeled as follows: 1. Connecting rod; 2. Mounting base; 3. Sampling cup; 4. Sliding ring; 5. Filter frame; 6. Blocking ring; 7. Mounting plate; 8. Spiral component. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. The term "comprising" and any variations thereof in the specification, claims, and accompanying drawings of the present utility model are intended to cover non-exclusive inclusion.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, it should be understood in the description of this utility model that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example: As shown in the attached figure, a lightweight and portable farmland groundwater sampling device includes a connecting rod 1, a mounting base 2, and a sampling cup 3. The mounting base 2 is threadedly installed on the bottom of the connecting rod 1, and the sampling cup 3 is threadedly installed on the bottom of the mounting base 2. It also includes a sampling component and an opening component. The sampling component is used for sampling groundwater, and the opening component is used for opening the circuit for the sampling cup 3 to prevent sampling from being obstructed.

[0024] In this embodiment, the sampling assembly includes a sliding ring 4, a filter frame 5, and a blocking ring 6. The sliding ring 4 is slidably connected to the outer wall of the sampling cup 3. A ring of water inlet holes is evenly opened on the upper part of the sampling cup 3. The sliding ring 4 moves to cover the water inlet holes on the sampling cup 3 when taking water samples from the sampling cup 3. The filter frame 5 is snapped into the sampling cup 3. The outer ring of the filter frame 5 is concave to hold water samples containing soil, and the middle part is convex to hold water samples that overflow from the outer ring of the filter frame 5. This sample does not contain soil, so two types of water samples can be obtained for easy comparison and detection. The middle part of the filter frame 5 has a filter hole to filter the water samples that overflow from the outer ring. The blocking ring 6 is snapped into the top of the filter frame 5. The blocking ring 6 is used to block water and guide the water flow, so that the water entering from the water inlet of the sampling cup 3 can preferentially enter the outer ring of the filter frame 5 under the limiting and guiding effect of the blocking ring 6. The diameter of the blocking ring 6 is larger than the diameter of the middle part of the filter frame 5, which can prevent water from directly entering the middle part of the filter frame 5. Furthermore, the open circuit assembly includes a mounting plate 7 and a screw 8. The mounting plate 7 is fixed to the bottom of the sampling cup 3, and the screw 8 is snapped onto the mounting plate 7. The screw 8 is used to open the circuit so that the sampling cup 3 can take samples smoothly and avoid being blocked.

[0025] When using this farmland groundwater sampling device, first assemble the connecting rod 1, mounting base 2 and sampling cup 3 securely in sequence using threaded connections, ensuring that the filter frame 5 is snapped into the sampling cup 3 and the blocking ring 6 is snapped into the top of the filter frame 5. Then, snap the screw 8 into the mounting plate 7 at the bottom of the sampling cup 3 to complete the device assembly.

[0026] The operator holds the upper part of the connecting rod 1 with both hands, aligns the device vertically with the groundwater sampling point in the farmland, and slowly applies downward pressure while rotating the entire device clockwise or counterclockwise. As the device rotates, the bottom spiral component 8 rotates synchronously. Its spiral structure can gradually break down obstacles such as soil, gravel, and crop roots, opening a path for the sampling cup 3 to descend. This prevents the sampling cup 3 from being blocked by impurities and unable to reach the target water depth. It is especially suitable for farmland environments with compacted soil or containing a lot of gravel, ensuring that the device can successfully descend to the preset sampling depth.

[0027] Once the designated depth is reached, the rotating device is stopped, and groundwater enters the device through the inlet hole at the top of the sampling cup 3. Under the guidance of the blocking ring 6, the water flow preferentially flows into the outer recessed area of ​​the filter frame 5, initially collecting water samples containing impurities such as mud and fine particles. As the outer water sample gradually overflows, it seeps into the protruding area through the filter holes in the middle of the filter frame 5, filtering out most of the solid impurities and forming a clean water sample. This achieves simultaneous collection of "impure water sample - clean water sample" during the same sampling process, allowing for the acquisition of two water samples of different purities without multiple dives, providing more comprehensive data support for subsequent comparative testing.

[0028] After sampling, the operator holds the connecting rod 1 with both hands and steadily pulls the device upward until the sampling cup 3 is lifted off the water surface and moved to the ground. Then, the sampling cup 3 can be disassembled, the water sample on the outer ring of the filter frame 5 can be taken out, and the sliding ring 4 on the outer wall of the sampling cup 3 can be slid upward to completely cover the water inlet hole to prevent water from flowing out of the water inlet hole during sampling. Finally, the two water samples are tested to meet the purity requirements of water samples in different testing scenarios.

[0029] Throughout the entire workflow, the manual rotation device drives the open-circuit design of the spiral component 8, eliminating the need for additional power equipment and making it suitable for farmland sites without power supply. The filter frame 5 and the blocking ring 6 of the sampling component work together to simplify the collection process of water samples of varying purity and improve sampling efficiency. All components are assembled using threads and snap-fit ​​methods, resulting in a compact size and lightweight design after disassembly, making it easy for a single operator to carry to different farmland sampling points. This significantly enhances the applicability and practicality of the device in complex farmland environments.

[0030] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the scope of the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A lightweight, portable groundwater sampling device for farmland, comprising a connecting rod (1), a mounting base (2), and a sampling cup (3), wherein the mounting base (2) is threadedly mounted to the bottom of the connecting rod (1), and the sampling cup (3) is threadedly mounted to the bottom of the mounting base (2), characterized in that, It also includes a sampling component and an opening component. The sampling component includes a component for sampling groundwater, and the opening component includes a component for opening the sampling cup (3) to prevent sampling from being obstructed.

2. The lightweight and portable farmland groundwater sampling device according to claim 1, characterized in that, The sampling assembly includes a sliding ring (4), a filter frame (5) and a blocking ring (6). The sliding ring (4) is slidably connected to the outer wall of the sampling cup (3), the filter frame (5) is snapped into the sampling cup (3), and the blocking ring (6) is snapped into the top of the filter frame (5).

3. The lightweight and portable farmland groundwater sampling device according to claim 2, characterized in that, A ring of water inlet holes is evenly opened on the upper part of the sampling cup (3), and the sliding ring (4) moves to cover the water inlet holes on the sampling cup (3).

4. A lightweight and portable farmland groundwater sampling device according to claim 2, characterized in that, The outer ring of the filter frame (5) is concave, and the middle part is convex. The filter frame (5) has a water filter hole in the middle.

5. A lightweight, portable farmland groundwater sampling device according to claim 4, characterized in that, The blocking ring (6) is used to block water and guide the water flow. The diameter of the blocking ring (6) is larger than the diameter of the middle part of the filter frame (5).

6. A lightweight and portable farmland groundwater sampling device according to claim 1, characterized in that, The open circuit assembly includes a mounting plate (7) and a screw (8). The mounting plate (7) is fixed to the bottom of the sampling cup (3), and the screw (8) is snapped onto the mounting plate (7).

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