Intelligent rainfall sampling device

Abstract

An intelligent rainfall sampling device disclosed by the present invention comprises a mounting rack, the mounting rack is provided with a rainwater collection barrel, a rainwater collection barrel, a rotary sample rack, a wastewater collection barrel and a central processing unit, the rainwater collection barrel is located above the wastewater collection barrel, the rainwater collection barrel is located above the rainwater collection barrel, and the bottom of the rainwater collection barrel is communicated with the rainwater collection barrel; a plurality of sampling bottles are evenly distributed on the rotating sample frame in the circumferential direction of the rotating sample frame, a sampling pipeline is connected to the rainwater collecting barrel, a liquid outlet of the sampling pipeline is located over the sampling bottles, an electromagnetic valve and a flow meter are arranged on the sampling pipeline, and a rainfall sensor is arranged in the rainwater collecting barrel. And the rainfall sensor, the electromagnetic valve and the driving part of the rotary sample holder are electrically connected with the central processing unit respectively. According to the invention, the automatic sampling process of continuous and non-evaporation daily-scale rainfall samples can be realized, the long-term continuous monitoring requirement is met, the sampling frequency can be dynamically adjusted according to the real-time data of the rainfall sensor, and the timeliness and representativeness of sample collection are ensured.

Description

Technical Field

[0001] This invention relates to the field of environmental monitoring technology, specifically to an intelligent rainfall sampling device. Background Technology

[0002] With rapid economic development, excessive gaseous pollutants are emitted into the atmosphere, migrating and transforming before entering the Earth's surface through wet and dry deposition. Wet deposition is a major form of atmospheric deposition, and studies have shown that the increasing amount of wet deposition pollution has caused a series of ecological effects, such as soil acidification and water eutrophication. To further study the impact of wet deposition, a corresponding wet deposition monitoring network was established. Wet deposition monitoring mainly consists of two steps: field sampling and sample analysis. Field sampling is primarily conducted using rainwater harvesters.

[0003] Traditionally, tipping bucket rain gauges are used for field rainwater sampling. This method often relies on manual operation. However, at remote or difficult-to-reach sites, traditional manual sampling cannot obtain continuous diurnal rainfall samples, which can interfere with the accuracy of subsequent sample analysis. This directly leads to the inaccuracy of hydrogen and oxygen isotopes (δ¹²). 2 H and δ 18 The lack of two key environmental indicator data—isotopes (O) and electrical conductivity (EC)—is a significant issue. EC values ​​effectively reflect the total amount of ions in atmospheric precipitation (such as dust, sea salt, and pollutants), while isotopes precisely trace the source and evolution of water vapor. The combination of these two is crucial for understanding atmospheric processes and water cycle mechanisms. Furthermore, due to the remote location of the site, timely equipment cleaning is not possible, resulting in a heavy cleaning workload.

[0004] Therefore, the present invention mainly addresses the above-mentioned technical problems through research and improvement. Summary of the Invention

[0005] In view of the existing technical problems, the present invention provides an intelligent rainfall sampling device to solve the problems in the prior art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: An intelligent rainfall sampling device includes a mounting frame, on which are mounted a rainwater collection tank, a rainwater collection tank, a rotating sample rack, a wastewater collection tank, and a central processing unit. The rainwater collection tank is located above the wastewater collection tank, and the bottom of the rainwater collection tank is connected to the rainwater collection tank via a first flexible hose. The rainwater collection tank is rotatably mounted on the mounting frame. Multiple sampling bottles are evenly distributed around the circumference of the rotating sample rack. A sampling pipe is connected to the rainwater collection tank, and the outlet of the sampling pipe is located directly above one of the sampling bottles. A solenoid valve and a flow meter are installed on the sampling pipe. A rainfall sensor is installed inside the rainwater collection tank. The rainfall sensor, the solenoid valve, and the drive unit of the rotating sample rack are electrically connected to the central processing unit.

[0007] In the above technical solution, when the rain sensor detects rainwater entering the rainwater collection bucket, it transmits a signal to the central processing unit. The central processing unit controls the solenoid valve to open and collect rainwater samples from the sampling bottles. By controlling the rotation of the rotating sampling frame through the central processing unit, sampling can be carried out on multiple sampling bottles. After sampling is completed, the solenoid valve closes, and the central processing unit controls the rainwater collection bucket to flip. After the rainwater collection bucket flips, the remaining rainwater in it will enter the wastewater collection bucket for further processing. The entire sampling process does not require manual intervention and achieves automated sampling of continuous, non-evaporating daily-scale rainfall samples.

[0008] Preferably, the lower end of the rainwater collection tank is rotatably connected to the mounting frame via a rotating shaft, and the side of the lower end of the rainwater collection tank away from the rotating shaft is connected to the movable end of the first lifting component, which is vertically mounted on the mounting frame.

[0009] Preferably, the wastewater collection tank is equipped with a water purification component, the outlet of which is connected to the water purification tank via a second flexible hose. The water purification tank is mounted on the mounting frame, and a first water pump is mounted on the second flexible hose.

[0010] Preferably, the rainwater collection bucket is movably mounted on the mounting frame in a horizontal direction.

[0011] Preferably, an electric lead screw is provided on the mounting frame in the horizontal direction, and the lower end of the rainwater collection tank is movably connected to the electric lead screw via a lead screw slider.

[0012] Preferably, a second lifting component is provided on the top of the mounting frame in the vertical direction, and a cleaning brush is rotatably connected to the movable end of the second lifting component, so that the rainwater collection bucket can be moved to a position directly below the cleaning brush.

[0013] Preferably, the water purifier is connected to a cleaning pipe, the outlet of which is located directly above the cleaning brush, and a second water pump is provided on the cleaning pipe.

[0014] Preferably, the mounting bracket is equipped with a solar power generation component on top, which is used to provide power to the central processing unit.

[0015] Preferably, the top of the rainwater collection bucket is provided with protective iron needles distributed along its circumference.

[0016] Preferably, the rainwater collection tank is equipped with a pH sensor and a turbidity sensor, which are electrically connected to the central control unit.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention can automatically collect and sample daily rainfall samples in situ and completely. At the same time, it uses solar power generation components to power the device, ensuring long-term stable operation in the field without power grid coverage. It is especially suitable for harsh areas such as the Qinghai-Tibet Plateau where transportation is inconvenient and maintenance is difficult. 2. This invention can transfer the collected excess rainwater into a wastewater collection tank for purification. The purified water is used in conjunction with a cleaning component to automatically clean the rainwater collection tank, significantly reducing manpower time and maintenance costs. 3. The present invention provides a rotating sample rack with multiple sampling bottles, enabling automatic switching of sampling to meet the needs of long-term continuous monitoring. It can also dynamically adjust the sampling frequency based on real-time data from the rain sensor to ensure the timeliness and representativeness of sample collection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0020] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "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 invention 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 invention.

[0021] As attached Figure 1 The illustrated intelligent rainfall sampling device includes a mounting frame 1, which has three layers. The mounting frame 1 is equipped with a rainwater collection tank 2, a rainwater collection bucket 3, a rotating sample rack 4, a wastewater collection tank 5, and a central processing unit 8. The rainwater collection tank 2 is located on the top layer of the mounting frame 1, the rainwater collection bucket 3 and the rotating sample rack 4 are located on the middle layer, and the wastewater collection bucket 5 and the central processing unit 8 are located on the bottom layer. The rainwater collection bucket 3 is located above the wastewater collection bucket 5, and the rainwater collection tank 2 is located above the rainwater collection bucket 3. The bottom of the rainwater collection tank 2 is connected to the rainwater collection bucket 3 via a first flexible hose 21. The inner wall of the rainwater collection tank 2 is coated with a hydrophobic coating to ensure complete collection of rainfall. The rainfall collected in the rainwater collection tank 2 enters the rainwater collection bucket 3 through the first flexible hose 21. Multiple sampling bottles 41 are evenly distributed along the circumference of the rotating sample rack 4. The sampling bottles 41 are preferably 50ml in capacity. A sampling pipe 31 is connected to the rainwater collection tank 3. The outlet of the sampling pipe 31 is located directly above one of the sampling bottles 41. The sampling pipe 31 is equipped with a solenoid valve and a flow meter. When one sampling bottle 41 has finished sampling, the next sampling bottle 41 is moved to a position directly below the outlet of the sampling pipe 31 for sampling by rotating the rotating sample rack 4. This process is repeated until all sampling bottles 41 have been sampled.

[0022] The rainwater collection tank 3 is equipped with a pH sensor and a turbidity sensor, which are electrically connected to the central control unit. The pH and turbidity sensors can sample key water quality parameters such as pH value and turbidity in the rainfall, enabling preliminary physicochemical analysis of the rainwater samples and facilitating staff to obtain brief information about rainfall events as quickly as possible.

[0023] A rain gauge sensor is installed inside the rainwater collection tank 2. The rain gauge sensor, the solenoid valve, and the drive unit of the rotating sample holder 4 are electrically connected to the central processing unit 8. The rain gauge sensor is used to accurately observe the rainfall intensity and start and end time, and has an intelligent sampling trigger function. It can automatically start the sampling program after the rainfall ends, and dynamically adjust the sampling frequency according to the real-time monitored rainfall data. For example, it samples once every 2 hours under light rain conditions and once every 30 minutes under heavy rain conditions.

[0024] The rotating sample holder 4 can adopt existing technology, or the central shaft of the rotating sample holder 4 can be rotatably connected to the mounting frame 1 via bearings, and the central shaft of the rotating sample holder 4 is driven by a stepper motor. The drive motor drives the rotating sample holder 4 to rotate at a set angle. The stepper motor is electrically connected to the central processing unit 8. The stepper motor can also be replaced with a servo motor. Through the linkage between the stepper motor and the central processing unit 8, the rotating sample holder 4 can be precisely driven to rotate, and the sampling bottles to be used can be aligned with the outlet of the sampling pipe 31 in sequence to complete a complete precipitation sample collection sequence.

[0025] In this embodiment, 25 sampling bottles 41 are evenly distributed on the rotating sample rack 4. Of course, other numbers can be set according to specific circumstances to ensure that the number of sampling bottles 41 loaded at one time can meet the routine sampling needs for about a month. During this period, unless special circumstances occur, staff do not need to perform routine equipment management.

[0026] In this embodiment, the rainwater collection tank 3 is rotatably mounted on the mounting frame 1. Specifically, the lower end of the rainwater collection tank 3 is rotatably connected to the mounting frame 1 near its right side via a rotating shaft 32. The lower end of the rainwater collection tank 3, away from the rotating shaft 32, is connected to the movable end of the first lifting component 33. The first lifting component 33 is mounted vertically on the mounting frame 1. After sampling, the first lifting component 33 drives the rainwater collection tank 3 to rotate around the rotating shaft 32. During the rotation, the residual rainwater in the rainwater collection tank 3 is discharged into the wastewater collection tank 5 below.

[0027] A water purification component 51 is installed inside the wastewater collection tank 5. The outlet of the water purification component 51 is connected to a water purification tank 6 via a second flexible hose 52. The water purification tank 6 is mounted on the mounting bracket 1. A first water pump 53 is installed on the second flexible hose 52 and is electrically connected to the central processing unit 8. A filter membrane can be installed at the outlet of the second flexible hose 52. The purified wastewater can be transported to the rainwater collection tank 2 through the second flexible hose 52 for cleaning the rainwater collection tank 2.

[0028] In this embodiment, the rainwater collection bucket 2 is movably mounted on the mounting frame 1 in a horizontal direction. Specifically, an electric lead screw is mounted on the mounting frame in a horizontal direction, and the lower end of the rainwater collection bucket 2 is movably connected to the electric lead screw via a lead screw slider. The electric lead screw is electrically connected to the central processing unit 8. When it is necessary to clean the rainwater collection bucket 2, the central processing unit 8 controls the electric lead screw to move, driving the lead screw slider and the rainwater collection bucket 2 to move horizontally until the rainwater collection bucket 2 moves to a position below the cleaning brush.

[0029] A cleaning pipe 61 is connected to the clean water tank 6. The outlet of the cleaning pipe 61 is located directly above the cleaning brush 7. A second water pump 62 is installed on the cleaning pipe 61 and is electrically connected to the central processing unit 8. A second lifting component 71 is installed vertically at the top of the mounting bracket 1. The movable end of the second lifting component 71 is rotatably connected to the cleaning brush 7. When the rainwater collection tank 2 moves to a position directly below the cleaning brush 7, the second lifting component 71 moves and drives the cleaning brush 7 down into the rainwater collection tank 2. The central processing unit 8 controls the second water pump 62 to start, injecting water into the rainwater collection tank 2 for preliminary rinsing. After the water is injected, the cleaning brush 7 rotates close to the inner wall of the rainwater collection tank 2 to clean the inner wall of the rainwater collection tank 2.

[0030] Alternatively, an ultraviolet disinfection lamp module can be installed in the middle of the cleaning brush 7. After cleaning, the ultraviolet disinfection lamp module is turned on to sterilize the inside of the rainwater collection bucket 2. At the same time, the heat emitted by the ultraviolet lamp also has an auxiliary drying function, which can effectively remove residual water stains inside the bucket. After the entire cleaning and drying process is completed, the second lifting component 71 moves the cleaning brush 7 vertically to the predetermined height and then stops. Then, the electric screw starts and moves the rainwater collection bucket 2 horizontally back to its initial water collection position, ready for the next round of rainwater collection.

[0031] To adapt to use in areas with inconvenient electricity access, such as in the field, a solar power generation module 9 is installed on the top of the mounting frame 1. This solar power generation module 9 is used to provide power to the central processing unit 8 and other electrical components, ensuring long-term stable operation of the device even in areas without power grid coverage. The solar power generation module 9 can be based on existing technology. Protective iron needles 22 are distributed around the top of the rainwater collection tank 2 to prevent birds or insects from affecting the equipment.

[0032] In this embodiment, the first lifting component 33 and the second lifting component 71 can be pneumatic cylinders or electric actuators. The choice can be made according to the actual situation and there are no specific restrictions.

[0033] The sampling device in this solution can be widely used in urban non-point source pollution monitoring, watershed ecological assessment, and other fields, saving approximately 20,000 yuan in labor costs per year for a single deployment. By integrating rainfall pollution source tracing and ecological response analysis functions, it can provide key technical support for basic theoretical research on the water cycle and comprehensive water environment management, possessing significant environmental benefits and promotion potential, and expanding its application scope while significantly reducing costs.

[0034] Its core advantages are reflected in the following aspects: (1) Multidisciplinary technology integration and innovation: Deeply integrate mechanical automation, materials science, environmental monitoring and artificial intelligence technologies to break through the limitations of traditional single-function tipping bucket rain gauge equipment and realize functional integration and intelligence.

[0035] (2) Green and sustainable operation and maintenance: The integrated solar auxiliary power generation components and self-cleaning anti-pollution mechanism effectively reduce the energy consumption and cleaning and maintenance costs of daily operation and maintenance of equipment, which is in line with the concept of sustainable development.

[0036] (3) Efficient data collection and management: By setting up a rotating sample rack 4 and multiple sampling bottles 41, the frequency of on-site data collection can be greatly reduced, effectively reducing the labor cost of operation and maintenance.

[0037] The preferred embodiments of the present invention have been described above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An intelligent rainfall sampling device, comprising a mounting frame (1), characterized in that: The mounting frame (1) is equipped with a rainwater collection tank (2), a rainwater collection tank (3), a rotating sample rack (4), a wastewater collection tank (5), and a central processing unit (8). The rainwater collection tank (3) is located above the wastewater collection tank (5), and the rainwater collection tank (2) is located above the rainwater collection tank (3). The bottom of the rainwater collection tank (2) is connected to the rainwater collection tank (3) through a first flexible hose (21). The rainwater collection tank (3) is rotatably mounted on the mounting frame (1). Multiple sampling bottles (41) are evenly distributed around the circumference of the rotating sample rack (4). A sampling pipe (31) is connected to the rainwater collection tank (3). The outlet of the sampling pipe (31) is located directly above one of the sampling bottles (41). A solenoid valve and a flow meter are installed on the sampling pipe (31). A rain sensor is installed inside the rainwater collection tank (2). The rain sensor, the solenoid valve, and the drive part of the rotating sample rack (4) are electrically connected to the central processing unit (8).

2. The intelligent rainfall sampling device according to claim 1, characterized in that: The lower end of the rainwater collection tank (3) is rotatably connected to the mounting frame (1) via a rotating shaft (32). The side of the lower end of the rainwater collection tank (3) away from the rotating shaft (32) is connected to the movable end of the first lifting component (33). The first lifting component (33) is mounted on the mounting frame (1) in a vertical direction.

3. The intelligent rainfall sampling device according to claim 1, characterized in that: The wastewater collection tank (5) is equipped with a water purification component (51). The outlet of the water purification component (51) is connected to the water purification tank (6) through a second hose (52). The water purification tank (6) is mounted on the mounting frame (1). A first water pump (53) is mounted on the second hose (52).

4. The intelligent rainfall sampling device according to claim 3, characterized in that: The rainwater collection bucket (2) is movably mounted on the mounting frame (1) in a horizontal direction.

5. The intelligent rainfall sampling device according to claim 4, characterized in that: The mounting bracket (1) is provided with an electric lead screw along the horizontal direction. The lower end of the rainwater collection bucket (2) is movably connected to the electric lead screw through a lead screw slider. The electric lead screw is electrically connected to the central processing unit (8).

6. The intelligent rainfall sampling device according to claim 4, characterized in that: The top of the mounting bracket (1) is provided with a second lifting component (71) in the vertical direction. The movable end of the second lifting component (71) is rotatably connected to a cleaning brush (7), and the rainwater collection bucket (2) can be moved to a position directly below the cleaning brush (7).

7. The intelligent rainfall sampling device according to claim 6, characterized in that: The water purifier (6) is connected to a cleaning pipe (61), the outlet of which is located directly above the cleaning brush (7), and a second water pump (62) is provided on the cleaning pipe (61).

8. The intelligent rainfall sampling device according to claim 1, characterized in that: The mounting bracket (1) is equipped with a solar power generation component (9) on top, which is used to provide power to the central processing unit (8).

9. The intelligent rainfall sampling device according to claim 1, characterized in that: Protective iron needles (22) are distributed around the top of the rainwater collection bucket (2) along its circumference.

10. The intelligent rainfall sampling device according to claim 1, characterized in that: The rainwater collection tank (3) is equipped with a pH sensor and a turbidity sensor, which are electrically connected to the central control unit.

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