Layered water sampling device for farmland runoff sampling in rainy season

Abstract

The utility model relates to farmland water quality detection technical field, concretely is layered water sample collection device of rain season farmland runoff sampling, including a plurality of vertical arrangement's collection jar, is equipped with a connecting rod assembly between two adjacent collection jar, the connecting rod assembly includes hollow pole in the upper, and hollow pole circumference outer wall is installed with a plurality of communicating grooves near the top, the length of communicating groove is greater than the thickness of collection jar outer wall. The utility model through a plurality of vertical arrangement's collection jar and connecting rod assembly, has realized the layered collection of different level water sample, and the design that communicating groove length is greater than the thickness of collection jar outer wall has guaranteed that water sample can enter collection jar smoothly, and can control the communicating state through the rotation connecting rod assembly, has realized the layered sampling and independent storage, and the whole structure can efficiently complete the layered sampling of rain season farmland different depth runoff.

Description

Technical Field

[0001] This utility model relates to the field of farmland water quality testing technology, specifically a stratified water sample collection device for sampling farmland runoff during the rainy season. Background Technology

[0002] In the fields of environmental monitoring and agricultural non-point source pollution research, nitrogen, phosphorus, and other pollutants carried by farmland runoff during the rainy season have a significant impact on the surrounding water environment. Stratified sampling and analysis of farmland runoff can help to gain a deeper understanding of the distribution characteristics and migration patterns of pollutants in runoff at different depths, thereby providing a basis for formulating scientific and effective pollution prevention and control measures.

[0003] Most existing farmland runoff sampling devices can only collect surface runoff, making it difficult to achieve stratified sampling of water samples at different depths. Some devices capable of stratified sampling suffer from complex structures and cumbersome operations. In actual farmland environments, installation and adjustment are time-consuming and labor-intensive, making it difficult to quickly adapt to sampling needs under different terrain and water level conditions. Furthermore, some devices have poor sealing performance, easily leading to mixing of water samples from different depths during sampling, affecting the accuracy and representativeness of the samples, and causing biases in subsequent data analysis results, thus failing to provide reliable data support for farmland pollution control. In addition, existing stratified sampling devices also lack portability, hindering multi-point sampling operations in vast farmland areas.

[0004] In view of this, we propose a stratified water sampling device for sampling farmland runoff during the rainy season. Summary of the Invention

[0005] To overcome the above deficiencies, this utility model provides a stratified water sampling device for sampling farmland runoff during the rainy season.

[0006] The technical solution of this utility model is: A stratified water sampling device for sampling farmland runoff during the rainy season includes several vertically arranged collection tanks. A connecting rod assembly is provided between two adjacent collection tanks. The connecting rod assembly includes a hollow rod located at the top. Several connecting grooves are installed on the outer circumference of the hollow rod near the top. The length of the connecting grooves is greater than the thickness of the outer wall of the collection tank. An insert rod is slidably installed inside the hollow rod. A lower sealing rod is coaxially fixed at the bottom of the insert rod. The bottom of the lower sealing rod extends into the collection tank below it and is threadedly connected to it. Two adjacent connecting rod assemblies are connected by a connecting rod. The top and bottom of the connecting rod are fixed to the lower sealing rod and the hollow rod, respectively. A drain pipe is installed at the bottom of the collection tank, and a drain valve is installed on the drain pipe. The system utilizes several vertically arranged collection tanks and connecting rod assemblies to achieve stratified collection of water samples at different levels. The design of the connecting groove length being greater than the outer wall thickness of the collection tank ensures that the water sample can smoothly enter the collection tank. Furthermore, the connection status can be controlled by rotating the connecting rod assembly, enabling stratified sampling and independent storage. The overall structure can efficiently complete stratified sampling of runoff at different depths in farmland during the rainy season.

[0007] As a preferred technical solution, the system also includes a vertically arranged threaded rod. Each collection tank has an integrally formed outer sleeve near the threaded rod. The threaded rod passes through the outer sleeve, and an adjustment knob, threaded to the threaded rod, is rotatably mounted on the top of the outer sleeve. Through the cooperation of the threaded rod, the outer sleeve, and the adjustment knob, the height of the collection tank can be independently adjusted along the threaded rod. This allows for flexible adjustment of the vertical position of each collection tank according to actual sampling needs, adapting to water sample collection requirements at different depths. This improves the adaptability of the device to different farmland runoff environments, making stratified sampling more targeted and accurate.

[0008] As a preferred technical solution, the insertion rod has a square cross-section, and its outer wall is tightly fitted to the inner wall of the hollow rod. The square cross-section and tight fit with the inner wall of the hollow rod prevent relative rotation of the insertion rod within the hollow rod, ensuring transmission stability.

[0009] As a preferred technical solution, when the bottom outer wall of the collection tank is located in the middle of the connecting groove, the lower sealing rod above the hollow rod remains attached to the collection tank. This ensures that the lower sealing rod, which is mainly used for driving, will not detach from the collection tank during the up-and-down movement of the connecting rod assembly.

[0010] As a preferred technical solution, a lower sealing rod is threadedly installed on the top of the uppermost collection tank. A drive rod is coaxially fixed to the top of the lower sealing rod, and the bottom of the lower sealing rod is coaxially connected to the uppermost connecting rod assembly via a connecting rod. The threaded installation of the lower sealing rod on the top of the uppermost collection tank, combined with the connection of the drive rod and the connecting rod, allows the entire connecting rod assembly to move by rotating the drive rod. This enables unified control of the connectivity status of each collection tank, simplifies the operation process, and allows users to quickly and easily open and close the stratified sampling, improving the ease of use of the device.

[0011] As a preferred technical solution, a drive knob is coaxially fixed to the top of the drive rod, and the outer circumference of the drive knob is provided with anti-slip texture. The design of the drive knob and the anti-slip texture increases the friction between the hand and the drive knob, making it easier for the user to turn the drive rod with less effort and preventing slippage during operation.

[0012] As a preferred technical solution, an L-shaped handgrip is fixedly installed on the top of the threaded rod, and an anti-slip sleeve is fixed on the handgrip. The design of the L-shaped handgrip and the anti-slip sleeve provides a convenient grip for the device, making it easy for users to carry and move the device. The anti-slip sleeve increases the friction when gripping, preventing the device from slipping during transportation, thus improving the portability and safety of the device.

[0013] As a preferred technical solution, the outer circumference of the hollow rod is threaded to the collection tank near the top, and the thread on it is parallel to the thread on the lower sealing rod. This ensures the sealing between the hollow rod and the collection tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention achieves stratified collection of water samples at different levels through several vertically arranged collection tanks and connecting rod assemblies. The design of the connecting groove length being greater than the outer wall thickness of the collection tank ensures that the water sample can smoothly enter the collection tank. Furthermore, the connection state can be controlled by rotating the connecting rod assembly, realizing stratified sampling and independent storage. The overall structure can efficiently complete the stratified sampling of runoff at different depths in farmland during the rainy season. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is the second schematic diagram of the overall structure of this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the image; The meanings of the labels in the diagram are as follows: 1. Drive rod; 10. Drive knob; 2. Collection tank; 20. Drain pipe; 21. Drain valve; 22. Outer sleeve; 23. Adjustment knob; 3. Hand handle; 30. Anti-slip sleeve; 4. Threaded rod; 5. Connecting rod assembly; 50. Hollow rod; 51. Connecting groove; 52. Lower sealing rod; 53. Insert rod; 6. Connecting rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-3 This utility model provides a technical solution: A stratified water sampling device for sampling farmland runoff during the rainy season includes several vertically arranged collection tanks 2. A connecting rod assembly 5 is provided between two adjacent collection tanks 2. The connecting rod assembly 5 includes a hollow rod 50 located at the top. Several connecting grooves 51 are installed on the outer circumference of the hollow rod 50 near the top. The length of the connecting grooves 51 is greater than the thickness of the outer wall of the collection tank 2. An insert rod 53 is slidably installed inside the hollow rod 50. A lower sealing rod 52 is coaxially fixed at the bottom of the insert rod 53. The bottom of the lower sealing rod 52 extends into the collection tank 2 located below it and is threadedly connected to it. Two adjacent connecting rod assemblies 5 are connected by a connecting rod 6. The top and bottom of the connecting rod 6 are fixed to the lower sealing rod 52 and the hollow rod 50, respectively. A drain pipe 20 is installed at the bottom of the collection tank 2, and a drain valve 21 is installed on the drain pipe 20. The system achieves stratified collection of water samples at different levels by using several vertically arranged collection tanks 2 and connecting rod assemblies 5. The design of the connecting groove 51, which is longer than the outer wall thickness of the collection tank 2, ensures that the water sample can enter the collection tank 2 smoothly. The connection state can be controlled by rotating the connecting rod assembly 5, realizing stratified sampling and independent storage. The overall structure can efficiently complete the stratified sampling of runoff at different depths in farmland during the rainy season.

[0018] As a preferred technical solution, the system also includes a vertically arranged threaded rod 4. Each collection tank 2 has an integrally formed outer sleeve 22 near the threaded rod 4. The threaded rod 4 passes through the outer sleeve 22, and an adjustment knob 23, threadedly connected to the threaded rod 4, is rotatably installed on the top of the outer sleeve 22. The cooperation of the threaded rod 4, the outer sleeve 22, and the adjustment knob 23 allows each collection tank 2 to be independently adjusted in height along the threaded rod 4. This enables flexible adjustment of the vertical position of each collection tank 2 according to actual sampling needs, adapting to water sample collection requirements at different depths. This improves the adaptability of the device to different farmland runoff environments, making stratified sampling more targeted and accurate.

[0019] As a preferred technical solution, the insertion rod 53 has a square cross-section, and its outer wall is tightly fitted to the inner wall of the hollow rod 50. The square cross-section of the insertion rod 53, coupled with its tight fit to the inner wall of the hollow rod 50, prevents relative rotation of the insertion rod 53 within the hollow rod 50, thus ensuring the stability of the transmission.

[0020] As a preferred technical solution, when the bottom outer wall of the collection tank 2 is located in the middle of the connecting groove 51, the lower sealing rod 52 located above the hollow rod 50 is not disengaged from the collection tank 2. This ensures that the lower sealing rod 52, which is mainly used for driving, will not disengage from the collection tank 2 during the up-and-down movement of the connecting rod assembly 5.

[0021] As a preferred technical solution, a lower sealing rod 52 is threadedly installed on the top of the uppermost collection tank 2. A drive rod 1 is coaxially fixed to the top of the lower sealing rod 52, and the bottom of the lower sealing rod 52 is coaxially connected to the uppermost connecting rod assembly 5 via a connecting rod 6. The threaded installation of the lower sealing rod 52 on the top of the uppermost collection tank 2, combined with the connection of the drive rod 1 and the connecting rod 6, allows the entire connecting rod assembly 5 to move by rotating the drive rod 1. This enables unified control of the connection status of each collection tank 2, simplifies the operation process, facilitates quick opening and closing of stratified sampling, and improves the ease of use of the device.

[0022] As a preferred technical solution, a drive knob 10 is coaxially fixed to the top of the drive rod 1, and the outer circumference of the drive knob 10 is provided with anti-slip texture. The design of the drive knob 10 and the anti-slip texture increases the friction between the hand and the drive knob 10, making it easier for the user to rotate the drive rod 1 with less effort and preventing slippage during operation.

[0023] As a preferred technical solution, an L-shaped handheld handle 3 is fixedly installed on the top of the threaded rod 4, and an anti-slip sleeve 30 is fixed on the handheld handle 3. The design of the L-shaped handheld handle 3 and the anti-slip sleeve 30 provides a convenient grip for the device, making it easy for users to carry and move the device. The anti-slip sleeve 30 increases the friction when gripping, preventing the device from slipping during transportation, thus improving the portability and safety of the device.

[0024] As a preferred technical solution, the outer circumference of the hollow rod 50 is threaded to the collecting tank 2 near the top, and the thread line on it is parallel to the thread line on the lower sealing rod 52. This ensures the sealing between the hollow rod 50 and the collecting tank 2.

[0025] This utility model's stratified water sampling device for sampling farmland runoff during the rainy season operates by rotating the corresponding adjustment knobs 23 of each collection tank 2. Utilizing the threaded engagement between the outer sleeve 22 and the threaded rod 4, each collection tank 2 is independently raised and lowered along the threaded rod 4, adjusting to a position corresponding to different depths of the farmland runoff to be sampled, thus achieving precise setting of the sampling height. During operation, the operator holds the anti-slip sleeve 30 of the holding rod 3 and places the device into the farmland runoff. When sampling is required, rotating the drive knob 10 causes the uppermost lower sealing rod 52 to rotate via the drive rod 1. Under the transmission action of the connecting rod 6, each connecting rod assembly 5 moves synchronously, causing the lower sealing rod 52 and the hollow rod 50 to rotate synchronously and move up and down relative to the collection tank 2. When the connecting groove 51 moves with the hollow rod 50 to connect with the inside of the collection tank 2, runoff samples from different depths enter the corresponding collection tank 2 through the connecting groove 51, achieving stratified sampling. After sampling is completed, the drive knob 10 is rotated in the opposite direction to separate the connecting groove 51 from the collection tank 2, and the lower sealing rod 52 forms a seal on the collection tank 2 to prevent water sample mixing. Finally, by opening the drain valve 21 at the bottom of each collection tank 2, water samples at the corresponding depth are released through the drain pipe 20, completing the collection and acquisition of stratified water samples. The entire process, through the coordinated operation of mechanical structures, achieves accurate and efficient stratified sampling of runoff at different depths in farmland during the rainy season.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stratified water sampling device for sampling farmland runoff during the rainy season, characterized in that: The system includes several vertically arranged collection tanks (2), with a connecting rod assembly (5) between two adjacent collection tanks (2). The connecting rod assembly (5) includes a hollow rod (50) located at the top. Several connecting grooves (51) are installed on the outer circumference of the hollow rod (50) near the top. The length of the connecting grooves (51) is greater than the thickness of the outer wall of the collection tank (2). An insert rod (53) is slidably installed inside the hollow rod (50). A lower sealing rod (52) is coaxially fixed at the bottom of the insert rod (53). The bottom of the lower sealing rod (52) extends into the collection tank (2) located below it and is threadedly connected to it. Two adjacent connecting rod assemblies (5) are connected by a connecting rod (6). The top and bottom of the connecting rod (6) are fixed to the lower sealing rod (52) and the hollow rod (50) respectively. A drain pipe (20) is installed at the bottom of the collection tank (2), and a drain valve (21) is installed on the drain pipe (20).

2. The stratified water sampling device for sampling farmland runoff during the rainy season as described in claim 1, characterized in that: It also includes a vertically arranged threaded rod (4), and each of the collection tanks (2) has an integrally formed outer sleeve (22) on the side near the threaded rod (4). The threaded rod (4) passes through the outer sleeve (22), and an adjustment knob (23) that is threadedly connected to the threaded rod (4) is rotatably installed on the top of the outer sleeve (22).

3. The stratified water sampling device for sampling farmland runoff during the rainy season as described in claim 2, characterized in that: The insert (53) has a square cross-section, and its outer wall is tightly fitted to the inner wall of the hollow rod (50).

4. The stratified water sampling device for sampling farmland runoff during the rainy season as described in claim 3, characterized in that: When the bottom outer wall of the collection tank (2) is located in the middle of the connecting groove (51), the lower sealing rod (52) located above the hollow rod (50) is not separated from the collection tank (2).

5. The stratified water sampling device for sampling farmland runoff during the rainy season as described in claim 4, characterized in that: The top of the collection tank (2) located at the top is threaded with a lower sealing rod (52), and a drive rod (1) is coaxially fixed at the top of the lower sealing rod (52). The bottom of the lower sealing rod (52) is coaxially connected to the uppermost connecting rod assembly (5) through a connecting rod (6).

6. The stratified water sampling device for sampling farmland runoff during the rainy season as described in claim 5, characterized in that: A drive knob (10) is coaxially fixed at the top of the drive rod (1), and the outer circumference of the drive knob (10) is provided with anti-slip texture.

7. The stratified water sampling device for sampling farmland runoff during the rainy season as described in claim 6, characterized in that: An L-shaped hand handle (3) is fixedly installed on the top of the threaded rod (4), and an anti-slip sleeve (30) is fixed on the hand handle (3).

8. The stratified water sampling device for sampling farmland runoff during the rainy season as described in claim 7, characterized in that: The outer circumference of the hollow rod (50) is threaded to the collection tank (2) near the top, and the thread on it is parallel to the thread on the lower sealing rod (52).

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