Rainfall isotope sample collecting device
The design of the water collection bucket and one-way valve body enables automatic collection of precipitation isotope samples, solving the problems of water sample evaporation and diffusion. It is suitable for precipitation isotope sampling in the field or remote areas, reducing errors and costs.
Patent Information
- Application Number
- CN202520318727.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing precipitation isotope sampling devices suffer from problems such as water sample evaporation, diffusion, and exchange with external water molecules, resulting in large errors. Furthermore, electric samplers are expensive and poorly portable, making them difficult to use on a large scale in the field or remote areas.
A precipitation isotope sample collection device was designed, including a water collection bucket, a guide bucket, and a one-way valve body. The device uses a baffle connected by elastic elements and rings to achieve automatic opening and closing, preventing water sample evaporation and diffusion. The device is simple in structure and does not require electric drive.
It effectively reduces water evaporation and diffusion, lowers sampling errors, has a simple structure, is easy to use on a large scale in the field or remote areas, and reduces costs.
Smart Images
Figure CN223796316U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to sampling device technical field, concretely relates to a precipitation isotope sample collection device. BACKGROUND
[0002] Water is the natural resources that can not be replaced for maintaining the function of the ecological system of the earth and supporting the development of the social and economic system. Hydrogen and oxygen stable isotopes, as the basic components of water molecules, have a significant marking effect in the hydrological cycle, and are a powerful means for tracing complex hydrological processes. Precipitation, as the main source of land water resources, is crucial to reveal regional hydrological processes and optimize water resources management. It not only relates to the accuracy of the isotopic analysis results, but also is a necessary prerequisite for using hydrogen and oxygen isotopes to trace hydrological processes.
[0003] At present, some countries and institutions have established precipitation isotope monitoring networks. The common precipitation isotope collection devices are traditional rain barrels and electric samplers. The traditional rain barrel includes an open-top barrel, and the electric sampler includes a barrel and a sealing cover on the top of the barrel, which is driven by electricity to open and close.
[0004] However, the traditional rain barrel cannot prevent the evaporation, diffusion and exchange of water samples with external water molecules due to its open top, which may result in high errors in collecting precipitation isotopes in the field, making it difficult for the device to meet the requirements of precipitation isotope sampling. The electric sampler is expensive due to the need for power driving, and its large size and weight result in poor portability, making it difficult to use in large areas in the field or remote areas. UTILITY MODEL CONTENTS
[0005] Therefore, the utility model provides a precipitation isotope sample collection device, which can reduce the evaporation, diffusion and exchange of water samples with external water molecules, reduce the sampling error, and does not need power driving, has a simple structure, and is suitable for large-area use in the field or remote areas.
[0006] The technical scheme of the utility model is:
[0007] A precipitation isotope sample collection device, comprising a collection bottle, further comprising:
[0008] A water collecting hopper is arranged above the collection bottle, and the bottom of the water collecting hopper is detachably connected with the collection bottle;
[0009] A flow guide hopper is fixed inside the water collecting hopper, and the top of the flow guide hopper is sealingly connected with the inner wall of the water collecting hopper;
[0010] A one-way valve body is arranged at the bottom of the flow guide hopper, the one-way valve body comprises a ring, two baffles and at least two elastic members, the ring is fixedly connected with the bottom of the flow guide hopper, the two baffles are symmetrically arranged at the inner side of the ring, the baffle is rotatably connected with the ring, the elastic member connects the ring and the corresponding baffle, and the baffle is closed by the reset force of the elastic member and abuts against the inner wall of the ring; when the combined weight of the water in the flow guide hopper and the baffle is greater than the reset force of the elastic member, the baffle rotates downward to open the ring.
[0011] Preferably, the inner part of the ring is provided with a fixed support, and the two baffles are arranged on the two sides of the fixed support respectively; the baffle is hingedly connected with the fixed support through a hinge shaft; and the elastic member comprises a torsion spring, the torsion spring is sleeved on the hinge shaft, one connecting end of the torsion spring is connected with the baffle, and the other connecting end is connected with the ring.
[0012] Preferably, the baffle is semicircular, the arc-shaped edge of the baffle is matched with the shape of the inner wall of the ring, and the straight edge of the baffle is rotatably connected with the fixed support.
[0013] Preferably, the inner part of the water collecting hopper is provided with a filter screen, and the filter screen is located above the flow guide hopper.
[0014] Preferably, the water collecting device further comprises a protective cover structure, the protective cover structure comprises a cylinder body and a connecting piece, the bottom of the cylinder body is closed, and the top of the cylinder body is open; the cylinder body is used for placing the collecting bottle and the water collecting hopper; and the connecting piece is arranged on one side of the cylinder body and used for fixing the cylinder body.
[0015] Preferably, the connecting piece comprises a support frame, the support frame is fixedly connected with the side surface of the cylinder body, and a positioning hole is formed in the support frame.
[0016] Preferably, the connecting piece comprises a plurality of rod members, the plurality of rod members are fixedly arranged at the bottom of the cylinder body, and the lower end of each rod member is provided with a pointed end.
[0017] Preferably, the top of the water collecting hopper is sleeved with a positioning ring, the upper end of the positioning ring is fixedly connected with the water collecting hopper, the inner diameter of the positioning ring is greater than the diameter of the top opening of the cylinder body, and the positioning ring is sleeved at the top of the cylinder body.
[0018] Preferably, the two sides of the positioning ring are provided with hand holding portions.
[0019] Compared with the prior art, the water isotope sample collecting device has the following beneficial effects:
[0020] The utility model discloses a collecting bottle is provided with the water collecting hopper, the water collecting hopper is provided with the diversion hopper and the check valve body, the baffle in check valve body is connected through the elastic member and ring piece, when the combined gravity of rainwater in diversion hopper and baffle is greater than the reset force of elastic member, the baffle rotates downward and collects the precipitation into the collecting bottle, after the precipitation falls into the inside of the collecting bottle, when there is no rainwater in diversion hopper or the combined gravity of rainwater and baffle is less than the reset force of elastic member, the elastic member drives the baffle to go up and closes diversion hopper, not only can realize the automatic opening and closing of precipitation collector under natural conditions, but also effectively limits the evaporation and diffusion of water sample in the collection process, and the structure utilizes the natural power, does not need the electric drive, and the structure is simple. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is the structure section view of the utility model embodiment 1.
[0022] Figure 2 It is the water collecting hopper external schematic view of the utility model embodiment 1.
[0023] Figure 3 It is the collecting bottle external schematic view of the utility model embodiment 1.
[0024] Figure 4 It is the protective cover structure schematic view of the utility model embodiment 2.
[0025] Figure 5 It is the protective cover structure schematic view of the utility model embodiment 3.
[0026] BRIEF DESCRIPTION OF DRAWINGS
[0027] 1, hand holds department;2, filter screen;3, water collecting hopper;4, diversion hopper;5, ring piece;6, baffle;7, fixed support;8, screw interface;9, collecting bottle;10, cylinder;11, support frame;12, positioning ring;13, rod piece. DETAILED DESCRIPTION
[0028] Need to explain, in the description of the utility model, the orientation or position relation that the terms "center" "upper" "lower" "front" "rear" "left" "right" "vertical" "horizontal" "top" "bottom" "inner" "outer" etc. are indicated is based on the orientation or position relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the indicated device or element must have a particular orientation, is constructed and operated with a particular orientation, therefore can not be understood as the limitation of the utility model.
[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0030] It should also be noted that all connections involved in this utility model can be achieved using conventional connection methods and do not involve any innovation.
[0031] This invention relates to a precipitation isotope sample collection device. Water is an irreplaceable natural resource for maintaining the function of Earth's ecosystems and supporting the development of socio-economic systems. Hydrogen and oxygen stable isotopes, as basic components of water molecules, have a significant labeling effect in the hydrological cycle and are currently a powerful means of tracing complex hydrological processes. Precipitation is the primary source of terrestrial water resources, and clarifying its isotopic composition is crucial for revealing regional hydrological processes and optimizing water resource management. It not only relates to the accuracy of isotope analysis results but is also a necessary prerequisite for using hydrogen and oxygen isotopes to trace hydrological processes.
[0032] Currently, some countries and institutions have established precipitation isotope monitoring networks. Common precipitation isotope collection devices include traditional rain gauges and electric samplers. Traditional rain gauges consist of a barrel with an open top, while electric samplers consist of a barrel and a sealed cap on top of the barrel, which is opened and closed by electric power.
[0033] However, traditional rain gauges, due to their open tops, cannot prevent the evaporation, diffusion, and exchange of water molecules with the outside environment. This can lead to high errors in collecting precipitation isotopes in the field, making it difficult for the device to meet the requirements for precipitation isotope sampling. Electric samplers, on the other hand, require electricity to operate, making them expensive, bulky, and heavy, resulting in poor portability and making them difficult to use on a large scale in the field or remote areas.
[0034] Based on the above reasons, this utility model provides a precipitation isotope sample collection device to solve the aforementioned technical problems. The following is a detailed description... Figures 1 to 5 The present invention will be described in detail below.
[0035] Example 1
[0036] The precipitation isotope sample collection device provided in this embodiment includes a collection bottle 9, a water collection hopper 3, a guide hopper 4, and a one-way valve body.
[0037] The water collecting hopper 3 is positioned above the collecting bottle 9, and its bottom is detachably connected to the collecting bottle 9. A guide hopper 4 is fixed inside the water collecting hopper 3, with its top circumference sealed to the inner wall of the water collecting hopper 3. A one-way valve body is located at the bottom of the guide hopper 4. The one-way valve body includes a ring 5, two baffles 6, and at least two elastic elements. The ring 5 is fixedly connected to the bottom of the guide hopper 4. The two baffles 6 are symmetrically arranged inside the ring 5 and are rotatably connected to it. The elastic elements connect the ring 5 and the corresponding baffles 6. The restoring force of the elastic elements causes the baffles 6 to abut against the inner wall of the ring 5, achieving a seal. When the combined weight of the water in the guide hopper 4 and the baffles 6 exceeds the restoring force of the elastic elements, the baffles 6 rotate downwards, opening the ring 5.
[0038] When collecting water, the baffle 9 is pressed down by the gravity of the rainwater, causing the baffle 9 to rotate downwards and open the ring 5, allowing the rainwater to enter the collection bottle 9.
[0039] When there is no precipitation in the water collection hopper, the baffle 9 moves upward under the restoring force of the elastic element, closing the bottom ring 5 of the guide hopper 4, which can reduce the evaporation, diffusion and exchange of water molecules with the outside of the collection bottle 9.
[0040] This device has a simple structure, is easy to use, does not require electricity, and can be used on a large scale in the field or remote areas.
[0041] In this embodiment, a fixed bracket 7 is provided inside the ring 5, and two baffles 6 are respectively provided on both sides of the fixed bracket 7. The baffles 6 are hinged to the fixed bracket 7 through a hinge shaft. The elastic element includes a torsion spring, which is fitted on the hinge shaft. One end of the torsion spring is connected to the baffle 6, and the other end is connected to the ring 5.
[0042] Each baffle 6 corresponds to a torsion spring. When not subjected to the force of rainwater, the baffle 6 is in a horizontal state under the action of the torsion spring. When the baffle 6 is subjected to the downward force of rainwater, the baffle 6 rotates downward, thereby creating a gap between the baffle 6 and the ring 5, allowing the rainwater to fall into the collection bottle 9.
[0043] In this embodiment, the baffle 6 is semi-circular, the arc-shaped edge of the baffle 6 matches the shape of the inner wall of the ring 5, and the straight edge of the baffle 6 is rotatably connected to the fixed bracket 7.
[0044] In this embodiment, a filter screen 2 is installed inside the water collecting hopper 3, and the filter screen 2 is located above the guide hopper 4.
[0045] Filter 2 has a circular structure with a pore size of 6mm × 6mm, which can prevent impurities from entering the collection system.
[0046] The usage method and working principle of this embodiment
[0047] In this embodiment, the guide bucket and one-way valve body constitute a one-way valve assembly. This one-way valve assembly utilizes the internal structure of the one-way valve body and a specific valve plate design to achieve the anti-evaporation function. A guide bucket 4 is fixed to the upper end of the one-way valve body, which guides water into the valve body to ensure smooth liquid flow. A fixed bracket 7 is provided in the inner cavity of the one-way valve body, and symmetrical semi-circular baffles 6 are installed on both sides of the fixed bracket 7. The baffles 6 are mounted at both ends of the fixed bracket 7 via hinge shafts, and the baffles 6 rotate around the hinge shafts. A torsion spring is fitted on the hinge shaft to keep the baffles 6 in a closed and sealed state when no external force is applied. The baffles 6 open and close automatically during rainfall and automatically close when there is no rainfall, through the coordinated opening and closing of their own weight and the elastic force of the torsion spring. During rainfall, the weight of the rainwater causes the baffles 6 to rotate and open around the hinge shaft, allowing rainwater to flow into the collection bottle 9. When the rainfall stops, the elastic restoring force provided by the torsion spring pulls the baffles 6 back to the closed position, ensuring that the water sample in the collection bottle 9 will not evaporate or be contaminated.
[0048] Example 2
[0049] The precipitation isotope sample collection device provided in this embodiment, based on Embodiment 1, is designed to further facilitate large-scale use in the field or remote areas. The protective cover structure provided in this embodiment includes a cylindrical body 10, which is closed at the bottom and open at the top. The receiving cavity is the inner cavity of the cylindrical body 10, and the opening matches the size of the large end of the water collection hopper 3. One side of the protective cover has a connector for fixing the protective cover. In use, the protective cover can be fixed to external buildings, land, or trees through the connector, thereby facilitating the use of this device in the field.
[0050] The protective cover structure provided in this embodiment is a wall-mounted protective cover. A support frame 11 is fixedly connected to the side of the cylinder 10, and a positioning hole is provided on the support frame 11.
[0051] In this embodiment, a ring 5 is fitted onto the top of the water collecting hopper 3. The upper end of the ring 5 is fixedly connected to the water collecting hopper 3. The diameter of the water collecting hopper 3 is larger than the diameter of the opening at the top of the cylinder 10. The ring 5 is fitted onto the top of the cylinder 10. Handholds 1 are provided on both sides of the ring 5.
[0052] The hand-held part 1 allows for easy lifting of the water collection hopper 3 and the collection bottle 9 as a whole, facilitating the replacement of the protective cover.
[0053] The connection between the cylinder 10 and the water collection hopper 3 is a nested design of the ring 5, wherein the inner diameter of the ring 5 is slightly larger than the outer diameter of the cylinder 10, and the water collection hopper 3 can be directly nested with the cylinder 10. This design ensures a stable connection between the water collection hopper 3 and the cylinder 10 while increasing the convenience of the installation and disassembly process.
[0054] The wall-mounted protective cover is fixed to a wall, tree, or other high place by a support frame 11 fixed to the cylinder 10, which reduces the impact of ground splash water and other pollution on precipitation sample collection. At the same time, it can also collect different types of precipitation samples such as through water.
[0055] Example 3
[0056] The difference between this embodiment and embodiment 2 is that in this embodiment, a plurality of rods 13 are fixedly connected to the bottom of the cylinder 10, and the lower end of the rods 13 is set as a pointed tip.
[0057] This embodiment provides a ground-mounted protective cover, which can be fixed to the ground by the rod 13 at the bottom of the cylinder 10, making it convenient for use in open fields.
[0058] When in use, assemble the water collection hopper 3 and the collection bottle 9. Depending on the specific scenario, you can choose a wall-mounted protective cover or a floor-standing protective cover. Finally, use the support frame 11 to fix it at a high place or use the rod 13 to fix it on the ground.
[0059] The collection bottle 9 utilizes the large-diameter spiral interface 8 to collect precipitation. When the precipitation sample passes through the baffle, the air pressure inside and outside the device is balanced, which achieves anti-evaporation performance while reducing the manufacturing cost of the device.
[0060] The protective cover and the water collection hopper are connected by a nested design of large and small circular tubes. The inner diameter of the circular tube at the water collection hopper opening is slightly larger than the outer diameter of the circular tube on the protective cover, allowing the water collection hopper and the protective cover to be directly nested together. This design ensures a stable connection between the water collection hopper and the protective cover while increasing the convenience of installation and disassembly.
[0061] This device is designed with two different protective covers to facilitate practical application. The wall-mounted cover can be installed on walls, trees, or other high locations, reducing the impact of ground splashes and other contaminants on precipitation sample collection, while also allowing the collection of different types of precipitation samples, such as through water. The ground-mounted cover can be installed on the ground for convenient use in open fields.
[0062] By cleverly utilizing the rebound force of springs and the properties of absorbent materials, an innovative baffle design was developed. A more sophisticated structure was also employed to improve the airtightness of the device. An innovative use of a large-diameter spiral-joint precipitation collection bottle balanced the internal and external air pressure of the device as the precipitation sample passed through the baffle, achieving anti-evaporation performance while reducing the device's manufacturing cost.
[0063] The above-disclosed embodiments are merely preferred embodiments of the present utility model. However, the embodiments of the present utility model are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.
Claims
1. A precipitation isotope sample collection device, comprising a collection bottle (9), characterized in that, Also includes: A water collecting hopper (3) is disposed above the collecting bottle (9), and the bottom of the water collecting hopper (3) is detachably connected to the collecting bottle (9); A guide bucket (4) is fixed inside the water collecting bucket (3), and the top of the guide bucket (4) is sealed to the inner wall of the water collecting bucket (3). A one-way valve body is disposed at the bottom of the guide bucket (4). The one-way valve body includes a ring (5), two baffles (6) and at least two elastic elements. The ring (5) is fixedly connected to the bottom of the guide bucket (4). The two baffles (6) are symmetrically disposed on the inner side of the ring (5). The baffles (6) are rotatably connected to the ring (5). The elastic elements connect the ring (5) and the corresponding baffles (6). The baffles (6) are sealed by abutting against the inner wall of the ring (5) through the restoring force of the elastic elements. When the combined weight of the water in the guide bucket (4) and the baffles (6) is greater than the restoring force of the elastic elements, the baffles (6) rotate downward to open the ring (5).
2. The precipitation isotope sample collection device according to claim 1, characterized in that, The ring (5) is provided with a fixed bracket (7) inside. Two baffles (6) are respectively provided on both sides of the fixed bracket (7). The baffles (6) are hinged to the fixed bracket (7) through a hinge shaft. The elastic element includes a torsion spring. The torsion spring is fitted on the hinge shaft. One end of the torsion spring is connected to the baffle (6), and the other end is connected to the ring (5).
3. The precipitation isotope sample collection device according to claim 2, characterized in that, The baffle (6) is semi-circular, and the arc-shaped edge of the baffle (6) matches the shape of the inner wall of the ring (5). The straight edge of the baffle (6) is rotatably connected to the fixed bracket (7).
4. The precipitation isotope sample collection device according to claim 1, characterized in that, The water collection hopper (3) is equipped with a filter screen (2), which is located above the flow guide hopper (4).
5. The precipitation isotope sample collection device according to claim 1, characterized in that, It also includes a protective cover structure, which includes a cylinder (10) and a connector. The bottom of the cylinder (10) is closed and the top is open. The cylinder (10) is used to place the collection bottle (9) and the water collection hopper (3). A connector is provided on one side of the cylinder (10) and the connector is used to fix the cylinder (10).
6. The precipitation isotope sample collection device according to claim 5, characterized in that, The connector includes a support frame (11), which is fixedly connected to the side of the cylinder (10), and the support frame (11) has a positioning hole.
7. The precipitation isotope sample collection device according to claim 5, characterized in that, The connector includes multiple rods (13), all of which are fixed to the bottom of the cylinder (10), and the lower end of each rod (13) is set as a pointed tip.
8. The precipitation isotope sample collection device according to claim 5, characterized in that, A positioning ring (12) is fitted on the top of the water collection bucket (3). The upper end of the positioning ring (12) is fixedly connected to the water collection bucket (3). The inner diameter of the positioning ring (12) is larger than the diameter of the top opening of the cylinder (10). The positioning ring (12) is fitted on the top of the cylinder (10).
9. The precipitation isotope sample collection device according to claim 8, characterized in that, Hand-held parts (1) are provided on both sides of the positioning ring (12).