Isotope specimen collection device

Abstract

The utility model provides a kind of isotope specimen collection device, including water sampling container and fixed frame, heavy base is set in the bottom of fixed frame, for helping fixed frame to sink underwater, the limiting component is set in the top and / or both sides of fixed frame, for the water sampling container is fastened in fixed frame, the water inlet is opened on heavy base, the check component connects the opening of water sampling container and water inlet, for water sample one-way from water inlet into water sampling container.The utility model installs water sampling container in fixed frame by limiting component, the opening of water sampling container is connected water inlet by check component;When using, the heavy base of fixed frame drives entire fixed frame to immerse in water body, check component can only allow water flow one-way into water sampling container, complete the collection of water sample;Sampling process is convenient, in extreme weather conditions, it can also be easily completed, while human factor interference can be avoided, ensure the cleanness of water sample.

Description

Technical Field

[0001] This utility model relates to the field of specimen collection, and in particular to a water sample collection device. Background Technology

[0002] Hydrogen and oxygen isotope analysis is an important tool for revealing hydrological processes such as water source origin, water retention time, and water-gas-solid transformation. The accuracy of its monitoring data depends on the scientific collection of water samples. Efficient and precise sampling equipment can ensure the representativeness of the samples, thereby providing a reliable scientific basis for subsequent analysis.

[0003] Currently, water sampling in high-altitude and cold mountainous areas mainly relies on manual operation, typically using water samplers or sampling bottles to collect samples directly from rivers or underground seepage points. However, the harsh environment and difficult sampling conditions in high-altitude and cold mountainous areas, coupled with the high scientific value of the samples (such as studying the hydrological processes during different ablation periods on the Qinghai-Tibet Plateau), place higher demands on sampling efficiency and sample quality.

[0004] Existing sampling methods have the following problems: Lack of specialized equipment: There is no standardized equipment specifically for hydrogen and oxygen isotope sampling in high-altitude and cold mountainous areas. Relying on manual operation is prone to introducing errors and affecting the representativeness of the samples.

[0005] Insufficient environmental adaptability: The climate in high-altitude and cold mountainous areas is harsh, and existing sampling methods are unable to cope with extreme conditions such as low temperatures and strong winds, which may lead to sample contamination or invalidation.

[0006] Therefore, there is an urgent need to develop a device specifically for hydrogen and oxygen isotope sampling in high-altitude and cold mountainous areas to achieve accurate and efficient water sample collection, reduce human interference, ensure sample quality, and provide reliable technical support for hydrological scientific research. Summary of the Invention

[0007] This application provides an isotope sample collection device that is easy to operate and avoids human-induced contamination of water samples.

[0008] Technical solution: This utility model provides an isotope specimen collection device, comprising: A water sampling container for collecting and storing water samples; A fixed frame is used to install a water collection container and place it in the water body; the fixed frame includes a load-bearing base, which is disposed at the bottom of the fixed frame to help the fixed frame sink underwater. A limiting component is provided on the top and / or both sides of the fixed frame for securing the water collection container in the fixed frame. The water inlet is located on the load-bearing base; A check valve assembly is connected to the opening and inlet of the water sampling container, and is used for unidirectional entry of water samples into the water sampling container from the inlet.

[0009] In some possible implementations, the backflow prevention component includes: A water inlet channel, wherein the first end of the water inlet channel is connected to a water inlet and the second end is connected to the opening of the water collection container; A check ball, the radial dimension of which is larger than that of the inlet, and which is located in the inlet channel and flows freely.

[0010] In some feasible embodiments, the fixing frame is adapted to the shape of the water collection container, which is cylindrical, and the fixing frame is constructed as a hollow column.

[0011] In some feasible implementations, the top of the fixed frame is U-shaped and has a lifting ring for attaching ropes.

[0012] In some possible implementations, the limiting component includes a first limiting structure disposed at the top of the fixed frame, the first limiting structure comprising: The guide rail is constructed on the side of the fixed frame and is wavy; The first limiting member is slidably connected in the guide rail, extends into the guide rail and abuts against the water collection container, so that the opening of the water collection container is pressed against the second end of the water inlet channel.

[0013] In some possible implementations, the limiting component includes a second limiting structure disposed on both sides of the fixed frame, the second limiting structure comprising: Limiting screw holes are provided on both sides of the fixed frame; The second limiting member is screwed into the limiting screw hole and abuts against the side wall of the water collection container.

[0014] In some feasible implementations, the sidewalls of the fixed frame are provided with openwork sections.

[0015] In some possible implementations, a sampling component adapted to the water sampling container is also included for extracting water samples collected in the water sampling container, including: The interface section is tubular in shape and fits tightly with the opening of the water collection container. The funnel section has a first end connected to the interface section and a second end through which the water sample flowing out of the water collection container is discharged.

[0016] In some feasible implementations, a filter layer is provided inside the interface section.

[0017] In some feasible implementations, the interface portion engages with the open thread of the water intake container.

[0018] Beneficial effects: This utility model uses a limiting component to install the water sampling container in a fixed frame, and the opening of the water sampling container is connected to the water inlet through a check component; in use, the load-bearing base of the fixed frame drives the entire fixed frame to be submerged in the water, and the check component only allows water to flow into the water sampling container in one direction, thus completing the water sample collection; the sampling process is convenient and can be easily completed even under extreme weather conditions, while avoiding interference from human factors and ensuring the cleanliness of the water sample. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the isotope sample collection device of this application; Figure 2 This is a schematic diagram of the fixed frame structure of this application; Figure 3 This is a schematic diagram of the structure of the sampling component in this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings.

[0022] In the description of the embodiments of this utility model, it should be noted that the terms "top", "bottom", "far", "near", "first", "second", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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 the embodiments of this utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0024] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0025] An isotope sample collection device, such as Figure 1 , 2 As shown, it includes a water sampling container 10 and a fixing frame. The water sampling container 10 collects and stores water samples, and the fixing frame is used to install the water sampling container 10 and form a whole, which are placed into the water body to be sampled.

[0026] The fixed frame includes a load-bearing base 9, a limiting component, a water inlet 13, and a check valve component. The limiting component is located on the top and / or sides of the fixed frame to secure the water sampling container 10 within the fixed frame and prevent it from dislodging. To help the fixed frame and the water sampling container 10 completely submerge in the water, a load-bearing base 9 is provided at the bottom of the fixed frame to prevent the water sampling container 10 from floating on the surface. Regarding the water intake method of the water sampling container 10, a water inlet 13 is provided on the load-bearing base 9. The check valve component connects the opening of the water sampling container 10 and the water inlet 13, allowing water samples to enter the water sampling container 10 unidirectionally from the water inlet 13, and preventing the water sample in the water sampling container 10 from flowing back into the water body.

[0027] To achieve unidirectional flow of water samples, the check valve assembly includes an inlet channel 8 and a check ball 11. The first end of the inlet channel 8 is connected to the inlet 13, and the second end is connected to the opening of the water sampling container 10. The radial dimension of the check ball 11 is larger than that of the inlet 13 and also larger than the opening of the water sampling container 10, and it can move freely within the inlet channel 8. Based on this design, when water flows into the inlet 13, it can push the check ball 11 away from the inlet 13, allowing the water sample to enter the interior of the water sampling container 10 via the inlet channel 8. If water flows back into the water sampling container 10, it will push the check ball 11 against the inlet 13, preventing it from flowing out of the inlet 13. Therefore, the check ball 11 ensures that water flows smoothly into the water sampling container 10 without flowing back into the water body, achieving unidirectional flow.

[0028] Generally, the check ball 11 is made of elastic rubber material, which can completely fill the inlet 13 when the water flows back, forming a seal and preventing leakage.

[0029] For example, the water inlet channel 8 can be constructed as a pipe. The first end is connected to and sealed to the load-bearing base 9 to ensure the flow between the water inlet channel 8 and the water inlet 13. The inner diameter of the port of the second end is interference-fitted with the outer diameter of the opening of the water sampling container 10. Therefore, when the opening of the water sampling container 10 is completely inserted into the second end of the water inlet channel 8, the water will not leak out from the gap, thus avoiding the problem of low water sampling efficiency.

[0030] In addition, the water intake container 10 can be a disposable container made of resilient plastic, which can further ensure the airtightness of the water inlet channel 8.

[0031] The shapes of the fixed frame and the water collection container 10 are not limited, as long as they can be adapted to each other and installed. In this embodiment, the water collection container 10 is cylindrical, the fixed frame is a hollow column 7, and the load-bearing base 9 is one of the bottom surfaces of the hollow column 7. The other bottom surface of the hollow column 7 can also be circular, but in order to facilitate handling before and after water collection and to reduce the overall weight of the device, the top of the fixed frame in this embodiment is U-shaped, which makes it easy for workers to lift and carry it by hand. That is, on the opposite side of the load-bearing base 9, the top surface of the fixed frame can be designed as an open end 6, and a U-shaped handle 4 is connected to the end face of the open end 6.

[0032] In addition, the top of the U-shaped handle 4 is equipped with a lifting ring 1 for threading a rope. Before sampling, the first end of the rope can be threaded into the lifting ring 1 and tied tightly; during sampling, after the fixed frame is submerged in the water, the second end of the rope can be left on the shore; after sampling is completed, the fixed frame can be pulled back from the water by pulling up the rope, which facilitates the completion of the entire sampling process.

[0033] In order to facilitate the placement of the water collection container 10 into the fixed frame, the two ends of the U-shaped handle 4 are rotatably connected to the two sides of the fixed frame. Therefore, when installing the water collection container 10, the U-shaped handle 4 can be turned to an angle that does not obstruct the water collection container 10.

[0034] Furthermore, if the water sample to be collected is the water that accumulates continuously during the freeze-thaw process, a support frame 12 can be installed on the bottom surface of the load-bearing base 9. The support frame 12 is inserted into the soil, and as the thawing water sample increases and accumulates in the pit, the support frame 12 ensures the stability of the entire fixed frame during the collection process. For this purpose, the number of support frames 12 can be set to three, evenly arranged in a triangular pattern on the load-bearing base surface. This creates a more stable support force, making it less prone to being washed away.

[0035] To ensure that the water sampling container 10 is installed in the fixed frame and is not easily moved, a limiting component is installed on the fixed frame to fix the position of the water sampling container 10 at different positions.

[0036] For example, the limiting component includes a first limiting structure disposed on the top of the fixed frame. The first limiting structure includes a guide rail 5 and a first limiting member 2. The guide rail 5 is constructed on the side of the fixed frame and is wavy. When the top of the fixed frame is provided with a U-shaped handle 4, the guide rail 5 can form the two sides of the U-shaped handle 4. The first limiting member 2 is slidably connected in the guide rail 5, extends into the guide rail 5 and abuts against the water collection container 10, so that the opening of the water collection container 10 is pressed against the second end of the water inlet channel 8. The abutting position mentioned here is specifically the top surface of the water collection container 10, that is, the entire water collection container 10 is pressed under the first limiting member 2, limiting the vertical direction of the water collection container 10 in the fixed frame.

[0037] For example, the first limiting member 2 is constructed as a long screw. After the position of the water collection container 10 is determined, it is screwed in from the outside to the inside of the guide rail 5 until it presses against the top surface of the water collection container 10. Since the guide rail 5 is constructed in a wavy shape, the side wall of the guide rail 5 can provide downward compressive force to the long screw, so that the position of the screw in the guide rail 5 is fixed and will not slip.

[0038] In addition, the limiting assembly also includes a second limiting structure disposed on both sides of the fixed frame. The second limiting structure includes a limiting screw hole and a second limiting member 3. The limiting screw hole is opened on both sides of the fixed frame. The second limiting member 3 is constructed as a screw, which can be screwed into the limiting screw hole and abut against the side wall of the water sampling container 10. Therefore, the two sides of the water sampling assembly are restricted between the two second limiting members 3. The second limiting structure can limit the water sampling container 10 in the left and right directions in the fixed frame.

[0039] To further reduce the resistance of lifting the fixed frame and water sampling container 10 from the water body, the side wall of the fixed frame is provided with a hollow part. The hollow part can make the water pressure inside and outside the fixed frame approximately equal. After sampling is completed, when the fixed component is lifted away from the water surface, the water body will not exert too much resistance on it.

[0040] After the water body is sampled, the collected samples need to be sent to the laboratory and the samples are extracted from the water sampling container 10 for further water sample analysis. Therefore, the isotope sample collection device in this embodiment also includes a sampling component adapted to the water sampling container 10 for extracting the water sample collected in the water sampling container 10.

[0041] The sampling assembly includes an interface section 15 and a funnel section 16. The interface section 15 is tubular and fits tightly with the opening of the water sampling container 10. The first end of the funnel section 16 is connected to the interface section 15, and the second end leaks the water sample flowing out of the opening of the water sampling container 10.

[0042] In some embodiments, the interface portion 15 and the funnel portion 16 are integrally formed, that is, the opening of the funnel portion 16 and the interface portion 15 are configured as a communicating channel, such as... Figure 3 As shown.

[0043] In some embodiments, the inner diameter of the interface portion 15 is interference-fitted with the outer diameter of the water sampling container 10 to ensure sealing during water sample extraction. In other embodiments, the interface portion 15 is threadedly fitted with the opening of the water sampling container 10, which can also form a seal.

[0044] In addition, the interface portion 15 is provided with a filter layer inside, which can initially filter most of the bacteria and small particles in the water sample during the water sample extraction process. For example, the filter layer can be constructed as a filter membrane disposed on the end face of the interface portion 15, specifically a 0.45μm filter membrane.

[0045] To prevent contamination of the extracted water sample, the outlet of the funnel 16 is connected to a disposable water needle 17, which is disposed of after one use.

[0046] The usage process of the isotope specimen collection device in this embodiment is as follows: S1. Preparations Loosen the second limiting member 3 from the limiting screw hole, and rotate the U-shaped handle 4 to a position that facilitates the placement of the water collection container 10 into the fixing frame. Place the cleaned check ball 11 into the water inlet channel 8, and then fix the water collection container 10 with its opening facing down onto the water inlet channel 8. After returning the U-shaped handle to its original position, insert the first limiting member 2 into the guide rail and slide it to a position that can press against the top of the water collection container 10. Gently shake the water collection container 10 to check if it is fixed, and tighten the second limiting member 3 to ensure a stable connection between the water collection container 10 and the fixing frame.

[0047] S2, Water Sampling Secure the rope at lifting ring 1 and drop the fixed frame into the sampling water body from the bridge or riverbank. When the fixed frame reaches the sampling position, the water flow, under negative pressure, pushes open the check valve 11 and flows from the inlet 13 through the inlet channel 8 into the water sampling container 10. When the water sampling container 10 is full, the internal water flow stops, and under the action of gravity, it impacts the check valve 11, causing it to adhere tightly to the inlet 13. The water sampling process is complete. Pull the rope to retrieve the fixed frame and the water sampling container 10.

[0048] Groundwater exists as solid ice in the early stages of the freeze-thaw cycle. As the active layer of permafrost in high-altitude mountainous areas thaws during the freeze-thaw cycle, the thawing intensifies with rising temperatures, leading to continuous seepage of groundwater during soil sampling. This embodiment can be used to place the sampling device at the bottom of the soil sampling pit, secure the support frame 12 to the bottom of the soil, and wait for the seepage water to rise and submerge the sample. Once sufficient water has entered, pull the rope to retrieve the sampling device.

[0049] S3, Water Sampling After water collection is completed, the water sample in the water collection container 10 must be completely removed. After placing the fixing frame on a stable ground, remove the first limiting piece 2, loosen the second limiting piece 3, and rotate the U-shaped handle 4. The staff needs to hold the bottom of the water collection container 10 with their hands, invert the fixing frame, and then remove the water collection container 10.

[0050] After the opening of the water sampling container 10 is connected to the interface 15 of the sampling component, the water sampling container 10 is squeezed to check whether the water outflow from the funnel 16 is stable and continuous. If the requirements are met, the water sample is squeezed into a 2ml sample bottle. After reaching the isotope measurement dose, the collected 2ml sample bottle is placed in a portable refrigerator to complete the isotope sample collection. To ensure that subsequent samples can be checked and supplemented, the sample bottle can be sealed and stored.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An isotope specimen collection device, characterized in that, include: A water sampling container for collecting and storing water samples; A fixed frame is used to install a water collection container and place it in the water body; the fixed frame includes a load-bearing base, which is disposed at the bottom of the fixed frame to help the fixed frame sink underwater. A limiting component is provided on the top and / or both sides of the fixed frame for securing the water collection container in the fixed frame. The water inlet is located on the load-bearing base; A check valve assembly is connected to the opening and inlet of the water sampling container, and is used for unidirectional entry of water samples into the water sampling container from the inlet.

2. The isotope specimen collection device according to claim 1, characterized in that, The check valve component includes: A water inlet channel, wherein the first end of the water inlet channel is connected to a water inlet and the second end is connected to the opening of the water collection container; A check ball, the radial dimension of which is larger than that of the inlet, and which is located in the inlet channel and flows freely.

3. The isotope specimen collection device according to claim 1, characterized in that, The fixed frame is adapted to the shape of the water collection container, which is cylindrical, and the fixed frame is constructed as a hollow column.

4. The isotope specimen collection device according to claim 1, characterized in that, The top of the fixed frame is U-shaped and has a lifting ring for attaching ropes.

5. The isotope specimen collection device according to claim 2, characterized in that, The limiting component includes a first limiting structure disposed at the top of the fixed frame, the first limiting structure comprising: The guide rail is constructed on the side of the fixed frame and is wavy; The first limiting member is slidably connected in the guide rail, extends into the guide rail and abuts against the water collection container, so that the opening of the water collection container is pressed against the second end of the water inlet channel.

6. The isotope specimen collection device according to claim 1, characterized in that, The limiting component includes a second limiting structure disposed on both sides of the fixed frame, the second limiting structure comprising: Limiting screw holes are provided on both sides of the fixed frame; The second limiting member is screwed into the limiting screw hole and abuts against the side wall of the water collection container.

7. The isotope specimen collection device according to claim 1, characterized in that, The side walls of the fixed frame have hollowed-out sections.

8. The isotope specimen collection device according to claim 1, characterized in that, It also includes a sampling component adapted to the water sampling container for extracting water samples collected from the water sampling container, including: The interface section is tubular in shape and fits tightly with the opening of the water collection container. The funnel section has a first end connected to the interface section and a second end through which the water sample flowing out of the water collection container is discharged.

9. The isotope specimen collection device according to claim 8, characterized in that, The interface section has a filter layer inside.

10. The isotope specimen collection device according to claim 8, characterized in that, The interface part is threadedly engaged with the opening of the water intake container.

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