Water body layering sampling device
By designing a water stratification sampling device with detachable connecting pipes, water from different depths can be collected using check valves and sample outlet pipes. This solves the problem of traditional sampling devices requiring multiple retrievals and improves sampling efficiency and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN ENVIRONMENTAL PROTECTION DESIGN INST CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional water stratification sampling devices require multiple lowering and retrieval operations, making it difficult to accurately reflect the vertical distribution characteristics of water samples. Furthermore, they are complex to operate and inefficient.
A water stratification sampling device including a detachable connecting pipe was designed. It uses a check valve and a sample outlet pipe to collect water at different depths. The stratification sampling is completed by continuously lowering the pipe, which simplifies the operation process.
It enables convenient stratified sampling, improves sampling efficiency, simplifies operation steps, and is suitable for water sampling needs at different depths.
Smart Images

Figure CN224456277U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a water stratification sampling device and belongs to the field of water sampling technology. Background Technology
[0002] In fields such as environmental monitoring, hydrological surveys, and water quality analysis, water sampling is a crucial step in obtaining data on water pollution status and ecological characteristics. Traditional stratified water sampling devices typically employ a single sampling method, collecting water samples at a fixed or random depth, which makes it difficult to accurately reflect the vertical distribution characteristics of the water samples.
[0003] However, many water bodies (such as lakes, reservoirs, and oceans) exhibit significant stratification, with water quality parameters (such as temperature, dissolved oxygen, nutrients, and pollutant concentrations) varying considerably at different depths. Therefore, relying solely on sampling data from a single depth may lead to incomplete monitoring results and could even mislead subsequent analysis and decision-making.
[0004] Currently, traditional samplers require multiple deployments and retrievals to sample water at different depths, increasing the difficulty of use and sampling time, thus necessitating improvements. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, this utility model designs a water stratification sampling device, which can conveniently perform stratification sampling and does not require frequent lowering and retrieval, thus improving sampling efficiency.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A water stratification sampling device includes several tubes that are detachably connected from top to bottom. Each tube is vertically connected and a check valve is installed at the bottom inlet of each tube. Each tube has a sample outlet tube connected to its side and a manual shut-off valve is installed on the sample outlet tube. The connection point between the sample outlet tube and the tube is located above the check valve.
[0008] Furthermore, connecting flanges are installed at both the top and bottom of the pipe body, and the connecting flanges between any two adjacent pipe bodies are connected by multiple connecting bolts.
[0009] Furthermore, a level is installed on the side of the topmost tube.
[0010] Furthermore, the tube body surface is provided with sampling scale, which is set along the length of the tube body.
[0011] Furthermore, the sample outlet tube is L-shaped, and the free end of the sample outlet tube is positioned downwards.
[0012] Compared with the prior art, this utility model has the following features and beneficial effects:
[0013] This invention, through the setting of a check valve, allows water from different depths to be collected in different pipes. During use, the pipes only need to be continuously lowered, eliminating the need for frequent lowering and retrieval. The operation is simple and convenient, enabling efficient sampling. Furthermore, the detachable design of multiple pipes allows for assembly according to the sampling depth, effectively improving applicability. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the multiple tubes assembled according to this utility model.
[0015] The attached diagram is labeled as follows: 1. Level; 2. Sampling scale; 3. Check valve; 4. Connecting bolt; 5. Pipe body; 6. Manual shut-off valve; 7. Sampling tube; 8. Connecting flange. Detailed Implementation
[0016] The present invention will now be described in more detail with reference to the embodiments.
[0017] like Figure 1 As shown, the water stratification sampling device of this embodiment includes several tubes 5 that are detachably connected from top to bottom. The number of tubes 5 can be selected according to the required sampling depth. The deeper the depth, the more tubes 5 are needed.
[0018] Specifically, the pipe body 5 is designed to be open from top to bottom to facilitate the flow of water during sampling.
[0019] Each pipe body 5 is equipped with a check valve 3 at its bottom inlet. The function of the check valve 3 is to prevent the water entering the pipe body 5 from flowing out from the bottom of the pipe body 5, thereby enabling water sampling.
[0020] To facilitate the removal of the sampled water, a sample outlet pipe 7 is connected to the side of the pipe body 5, and a manual shut-off valve 6 is installed on the sample outlet pipe 7. The connection point between the sample outlet pipe 7 and the pipe body 5 is located above the check valve 3. After sampling is completed, the manual shut-off valve 6 is opened, and the water in the corresponding pipe body 5 can flow out from the sample outlet pipe 7, which facilitates subsequent water testing.
[0021] Furthermore, connecting flanges 8 are installed at both the top and bottom of the pipe body 5. The connecting flanges 8 between any two adjacent pipe bodies 5 are connected by multiple connecting bolts 4. When multiple pipe bodies 5 need to be connected, they can simply be stacked from top to bottom and then the connecting flanges 8 can be connected using the connecting bolts 4, which is convenient and quick.
[0022] Furthermore, a level 1 is installed on the side of the topmost tube 5. The level 1 ensures that the tube 5 is lowered vertically without shifting too much, thus ensuring that the sampling depth error is within a controllable range.
[0023] Furthermore, the surface of the pipe body 5 is provided with sampling scale 2, which is set along the length of the pipe body 5. The setting of sampling scale 2 can assist the sampling personnel in sampling water at a specified depth, thus improving the convenience of use.
[0024] Furthermore, the sample outlet tube 7 is L-shaped, and the free end of the sample outlet tube 7 is set downwards, which facilitates the extraction of the sampled water.
[0025] The working principle of this utility model is as follows: Before use, determine the depths at which sampling is required, and then assemble an appropriate number of pipe bodies 5 using the connecting flange 8 and connecting bolts 4.
[0026] During sampling, the sampling point with the lowest depth is sampled first. The bottom tube 5 is inserted into the water body and the sampling scale 2 is observed. As the bottom tube 5 is inserted to the specified depth, the water body will enter the bottom tube 5. Therefore, when the bottom tube 5 is inserted to the specified depth, the sampling of a layer of water at that depth can be completed. Furthermore, due to the setting of the check valve 3, the sampled water body will be collected in the bottom tube 5.
[0027] When sampling water at the next depth is required, simply extend the bottom tube 5 downwards. Water will continue to enter the bottom tube 5, while the water sampled at the previous depth will be pushed into the second-to-last tube 5 by the newly entering water. Due to the check valve 3, the water will remain in the second-to-last tube 5, thus enabling two tubes 5 to sample water at two different depths. By continuously extending the bottom tube 5 downwards, sampling and collection of water at different depths can be completed.
[0028] By setting the check valve 3, water at different depths can be collected in different pipe bodies 5. During use, it is only necessary to continuously lower the pipe body 5, without the need for frequent lowering and retrieval. The operation is simple and convenient, and efficient sampling can be achieved. Furthermore, the detachable design of multiple pipe bodies 5 allows for assembly according to the sampling depth, effectively improving applicability.
[0029] In the description of this utility model, it should be noted that the terms "inner", "outer", "upper", 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.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
Claims
1. A device for stratified sampling of a body of water, characterised in that: It includes several tubes (5) that can be detachably connected from top to bottom. Each tube (5) is arranged vertically and vertically, and a check valve (3) is installed at the bottom inlet of each tube (5). Each of the tube bodies (5) has a sample outlet tube (7) connected to its side, and a manual shut-off valve (6) is installed on the sample outlet tube (7). The connection point between the sample outlet tube (7) and the tube body (5) is located above the check valve (3).
2. The apparatus of claim 1, wherein: The top and bottom ends of the pipe body (5) are equipped with connecting flanges (8), and the connecting flanges (8) between any two adjacent pipe bodies (5) are connected by multiple connecting bolts (4).
3. The apparatus of claim 1, wherein: A level (1) is installed on the side of the tube (5) at the top.
4. The water stratification sampling device according to claim 1, characterized in that: The tube body (5) is provided with sampling scale (2) on its surface, and the sampling scale (2) is provided along the length of the tube body (5).
5. The apparatus of claim 1, wherein: The sample outlet tube (7) is L-shaped, and the free end of the sample outlet tube (7) is set downward.