Anti-pollution clogging rainwater harvesting apparatus powered by solar energy

Abstract

The application relates to the technical field of rainwater sampling, and discloses a rainwater collecting device based on solar power supply and capable of preventing pollution and blockage, the inside of an outer box is provided with a rainwater collecting assembly; the rainwater collecting assembly comprises a servo motor one fixedly connected with the inner wall of the outer box, a sleeve is fixedly installed at the driving end of the servo motor one, a ring plate is rotatably sleeved at the outside of the sleeve, the ring plate is fixedly connected with the inner wall of the outer box, a flow guide box is fixedly installed above the ring plate, a collecting cover is fixedly installed at the upper end of the flow guide box, and baffle plates are fixedly installed at the two sides of the ring plate; the flat shape and the wavy shape of the filter assembly are reciprocally switched, impurities are concentrated at the wave trough bottom, differential backwashing is matched, the flow rate of the wave trough bottom is large, the flow rate of the remaining area is small, impurities can be efficiently stripped even when there is no additional water source and the rainfall is small, the pain points of impurity adhesion blockage and incomplete cleaning of conventional equipment are completely solved, and the sampling continuity is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of rainwater sampling technology, and more particularly to a rainwater collection device based on solar power that is resistant to pollution and clogging. Background Technology

[0002] Hulunbuir is located in the cold temperate zone of northern China. The region experiences extreme low temperatures of -40°C in winter, strong winds and sandstorms in spring, short-term heavy rain in summer, and frequent severe weather events such as sleet and freezing rain in spring and autumn.

[0003] Rainwater sampling is a crucial step in meteorological monitoring and environmental analysis. The representativeness, purity, and classification and collection capabilities of the samples directly affect the quality of subsequent work such as precipitation chemical composition analysis and regional pollution source tracing.

[0004] However, current conventional rainwater sampling equipment lacks targeted protective design in complex outdoor environments, resulting in significant shortcomings in its protective functions. Its sampling ports are mostly open or have simple shielding structures, allowing various debris such as leaves, branches, bird droppings, and dust to fall directly into the sampling chamber during rainy or windy weather. This not only directly contaminates the rainwater samples, introducing non-rainwater source impurities, but also severely affects the accuracy of subsequent precipitation chemical composition analysis and pollution source tracing. Furthermore, these debris accumulates continuously in the sampling port, filter components, or diversion pipes, gradually blocking the water flow channels and preventing rainwater from flowing smoothly into the collection container. This can lead to reduced sampling flow and efficiency, or even sampling interruption, disrupting the continuity of sampling work and failing to meet the core requirements of environmental monitoring for sample integrity and continuity. Moreover, the need for frequent manual disassembly and cleaning after blockage further increases maintenance costs and workload. Summary of the Invention

[0005] The technical problem to be solved by this invention is that existing rainwater sampling devices have poor anti-pollution and anti-clogging capabilities. To address this, we propose a rainwater sampling device based on solar power that is resistant to pollution and clogging.

[0006] To achieve the above objectives, this application adopts the following technical solution: a solar-powered, pollution-resistant and clogging-resistant rainwater harvesting device, including an outer casing, with rainwater harvesting components installed inside the outer casing;

[0007] The rainwater harvesting assembly includes a servo motor that is fixedly connected to the inner wall of the outer casing. A sleeve is fixedly installed on the drive end of the servo motor. An annular plate is rotatably fitted on the outer side of the sleeve. The annular plate is fixedly connected to the inner wall of the outer casing. A flow guide box is fixedly installed directly above the annular plate. A collection cover is fixedly installed on the upper end of the flow guide box. Baffles are fixedly installed on both sides of the annular plate.

[0008] Both sets of baffles have arc-shaped grooves on the side where they are close to each other. A U-shaped plate is fixedly installed on the side where the two sets of baffles are close to each other. A guide plate is fixedly installed on the inner side directly below the U-shaped plate. A backflush plate is fixedly installed on the inner side of the guide plate. Multiple sets of diamond-shaped through holes are arranged through the inner side of the backflush plate.

[0009] The inner side of the sleeve has multiple sets of positioning grooves arranged in a circumferential interval. The surface of the positioning grooves has multiple sliding grooves symmetrically arranged in an alternating pattern. The inner side of each set of positioning grooves is provided with a filter group.

[0010] The filter assembly includes multiple shafts that are slidably connected to the slide groove. Connecting rods are symmetrically mounted between adjacent shafts. Filter screens are fixedly mounted between the shafts and connecting rods. Each of the two sets of connecting rods has a driven rod symmetrically mounted on one side away from each other, and a spring is symmetrically fixedly mounted on the other side. The driven rod passes through the sleeve and is slidably connected. The other end of the driven rod slides against the baffle, and the other end of the spring is fixedly connected to the sleeve. The multiple filter assemblies have the same structural composition.

[0011] Preferably, the flow guide box is connected to the inside of the collection cover, and inclined plates are symmetrically fixedly installed on the inner wall of the flow guide box.

[0012] Preferably, a sample discharge tube is fixedly installed on one side of the U-shaped plate through a baffle, and a temporary storage box is slidably installed inside the outer box, with the sample discharge tube connected to the inside of the temporary storage box.

[0013] Preferably, a drain trough is provided through the inner side directly below the ring plate, and a drain pipe is fixedly installed on the outer wall directly below the ring plate, with the outlet of the guide plate corresponding to the drain trough.

[0014] Preferably, multiple heating wires are fixedly installed inside the guide plate, and the multiple heating wires are arranged at intervals.

[0015] Preferably, the arc-shaped groove is formed in the lower half of the baffle, and the arc-shaped groove corresponds to the sewage discharge trough.

[0016] Preferably, the inner wall of the ring plate is symmetrically provided with ring grooves, and the outer side of the sleeve is symmetrically slidably installed with collars, which are slidably fitted into the inner side of the ring grooves.

[0017] Preferably, a comb-shaped rain sensor is fixedly installed on the outside of the outer casing, with the detection end of the comb-shaped rain sensor exposed on the surface of the outer casing.

[0018] Preferably, a servo motor is fixedly installed inside the outer casing, and a connecting rod is symmetrically rotated and installed on the outside of the outer casing, with a protective cover fixedly installed at one end of the connecting rod.

[0019] Preferably, a solar panel is fixedly installed on the outside of the outer casing, and a storage battery is fixedly installed on the inside of the outer casing.

[0020] The technical effects and advantages of this invention are as follows:

[0021] By using a servo motor to drive and link with the mechanical structure, the filter group can switch between flat and wavy shapes, causing impurities to concentrate at the bottom of the waves. Combined with differentiated backwashing, the high flow rate at the bottom of the waves and the low flow rate in other areas can efficiently remove impurities even when there is no additional water source and the rainfall is low. This completely solves the pain points of impurity adhesion and clogging and incomplete cleaning in conventional equipment, ensuring the continuity of sampling.

[0022] The combined design of the collection cover, diversion box and inclined plate achieves efficient rainwater collection and directional flow, reducing overflow and retention. The filtration and sampling paths are independently separated. Clean rainwater goes directly to the temporary storage box through the discharge pipe, and backwash wastewater is quickly discharged through the sewage trough and sewage pipe to avoid secondary pollution and ensure that the samples meet the requirements for subsequent testing and analysis.

[0023] In response to the low temperatures and strong winds of Hulunbuir, the deflector plate has a built-in heating wire to prevent rainwater from freezing and forming an ice shell on the filter. The protective cover and the comb-shaped rain sensor work together to effectively isolate wind, sand and debris. The power supply system composed of solar panels and batteries solves the problem of power outages at low temperatures, ensuring that the equipment operates stably in extreme low temperatures of -40℃ and in strong winds and dusty environments. Attached Figure Description

[0024] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0025] Figure 1 This is a front view of the outer casing structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the back of the outer casing structure of the present invention;

[0027] Figure 3 This is a cross-sectional view of the outer casing structure of the present invention;

[0028] Figure 4 This is a top view schematic diagram of the rainwater harvesting component structure of the present invention;

[0029] Figure 5 This is a cross-sectional view of the rainwater harvesting component structure of the present invention;

[0030] Figure 6 This is an exploded view of the rainwater harvesting component structure of the present invention;

[0031] Figure 7 This is an exploded view of the sleeve structure of the present invention;

[0032] Figure 8 This is a top view of the filter assembly structure of the present invention;

[0033] Figure 9 This is a cross-sectional schematic diagram of the guide plate structure of the present invention.

[0034] Legend: 1. Outer casing; 11. Comb-shaped rain sensor; 12. Servo motor II; 13. Connecting rod; 14. Protective cover; 15. Temporary storage box; 16. Solar panel; 17. Battery; 2. Rainwater collection assembly; 21. Servo motor I; 22. Sleeve; 221. Positioning groove; 222. Slide groove; 223. Filter assembly; 2231. Shaft; 2232. Connecting rod; 2233. Filter screen; 2 234. Spring; 2235. Driven rod; 224. Collar; 23. Ring plate; 231. Ring groove; 232. Drainage trough; 233. Drainage pipe; 24. Baffle; 241. Arc-shaped groove; 242. U-shaped plate; 243. Sampling pipe; 244. Guide plate; 245. Backflush plate; 246. Diamond-shaped through hole; 247. Heating wire; 25. Flow box; 251. Inclined plate; 26. Collection cover. Detailed Implementation

[0035] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0036] Existing conventional rainwater sampling equipment lacks specific protective designs for complex outdoor environments, exhibiting significant shortcomings in its protective capabilities. Its sampling ports are mostly open or have simple shielding structures, allowing various debris such as leaves, branches, bird droppings, and dust to fall directly into the sampling chamber during windy and rainy weather. This not only directly contaminates the rainwater sample, introducing non-rainwater source impurities, but also severely impacts the accuracy of subsequent precipitation chemical composition analysis and pollution source tracing. Furthermore, these debris accumulates continuously in the sampling port, filter components, or flow channels, gradually clogging the water flow path and preventing rainwater from flowing smoothly into the collection container. This can lead to reduced sampling flow and efficiency, or even sampling interruption, disrupting the continuity of sampling work and failing to meet the core requirements of environmental monitoring for sample integrity and continuity. Moreover, the need for frequent manual disassembly and cleaning after clogging further increases maintenance costs and workload. To address this issue, [the following text is missing from the original] Figure 1 - Figure 9 As shown, the present invention provides a technical solution: a rainwater collection device based on solar power that is resistant to pollution and clogging, including an outer casing 1, and a rainwater collection component 2 is installed inside the outer casing 1;

[0037] The rainwater collection component 2 includes a servo motor 21 fixedly connected to the inner wall of the outer casing 1. A sleeve 22 is fixedly installed on the drive end of the servo motor 21. An annular plate 23 is rotatably sleeved on the outer side of the sleeve 22. The annular plate 23 is fixedly connected to the inner wall of the outer casing 1. A flow guide box 25 is fixedly installed directly above the annular plate 23. A collection cover 26 is fixedly installed on the upper end of the flow guide box 25. Baffles 24 are fixedly installed on both sides of the annular plate 23.

[0038] An arc-shaped groove 241 is provided on the side of the two sets of baffles 24 that are close to each other. A U-shaped plate 242 is fixedly installed on the side of the two sets of baffles 24 that are close to each other. A guide plate 244 is fixedly installed on the inner side directly below the U-shaped plate 242. A backflushing plate 245 is fixedly installed on the inner side of the guide plate 244. Multiple sets of diamond-shaped through holes 246 are arranged through the inner side of the backflushing plate 245.

[0039] Multiple sets of positioning grooves 221 are arranged in a circumferential interval on the inner side of the sleeve 22. Multiple sliding grooves 222 are symmetrically opened on the surface of the positioning grooves 221. The multiple sliding grooves 222 are arranged in an alternating interval. Filter groups 223 are provided on the inner side of each set of positioning grooves 221.

[0040] Filter assembly 223 includes multiple shafts 2231 slidably connected to slide groove 222. Connecting rods 2232 are symmetrically rotatably mounted between adjacent shafts 2231. Filter screens 2233 are fixedly mounted between shafts 2231 and connecting rods 2232. Each pair of connecting rods 2232 has a driven rod 2235 symmetrically movably mounted on opposite sides, and springs 2234 symmetrically fixedly mounted on opposite sides. The driven rod 2235 passes through sleeve 22 and is slidably connected. The other end of the driven rod 2235 slidably abuts against baffle 24, and the other end of the spring 2234 is fixedly connected to sleeve 22. Multiple filter assemblies 223 have the same structure. When it rains, rainwater will first flow along... The water flows from the surface of the collection cover 26 into the guide box 25. Simultaneously, the servo motor 21 drives the sleeve 22 to rotate, causing multiple filter groups 223 to rotate synchronously around the sleeve 22 as the axis. During this circular rotation, when the driven rod 2235 is not inside the arc-shaped groove 241, due to its contact with the surface of the baffle 24, the driven rod 2235 generates a pushing force from both sides, pushing the filter groups 223, and simultaneously stretching the spring 2234. This forces the shaft 2231 to slide only along the inner side of the positioning groove 221, causing a change in the angle between the connecting rod 2232 and the shaft 2231, which in turn drives the filter screen 2233 to change synchronously, thus promoting… The filter assembly 223 changes from a flat shape to a reciprocating wavy shape. When rainwater carrying impurities falls onto the surface of the filter assembly 223, the impact force of the falling rainwater causes most of the impurities to concentrate at the bottom of the wavy shape, while the filtered rainwater is collected in the U-shaped plate 242. When the driven rod 2235 moves to the inside of the arc-shaped groove 241, the return force of the spring 2234 creates a pulling force from both sides on the filter assembly 223, causing the filter assembly 223 to change from a reciprocating wavy shape back to a flat shape. A small portion of the filtered rainwater in the U-shaped plate 242 flows through the guide plate 244 and passes through the diamond-shaped through-hole 246. Subsequently, the filter 2233 located in the valley area is backwashed with a high flow rate, while the filter 2233 located outside the valley area is backwashed with a low flow rate. This ensures the backwashing effect of the filter 2233 even when there is little rainfall and no additional water source, significantly improving the cleaning efficiency and service life of the filter 2233. It effectively prevents external debris from mixing in, avoids sample contamination, ensures the accuracy of subsequent testing and analysis, and reduces the frequency of manual disassembly and cleaning, thereby reducing maintenance costs and workload. It fully meets the core requirements of rainwater sampling in complex outdoor environments and cold and windy areas for sample purity, collection continuity, and equipment stability.

[0041] Reference Figure 6As shown in this embodiment: the flow guide box 25 is internally connected to the collection cover 26. Inclined plates 251 are symmetrically fixedly installed on the inner wall of the flow guide box 25. The rainwater collected by the collection cover 26 can quickly flow into the flow guide box 25 through the connecting structure, avoiding rainwater overflow or retention and ensuring sufficient sampling volume. The symmetrically set inclined plates 251 can guide the rainwater to form a stable convergence flow state. The inclined angle makes the rainwater fall linearly, avoiding the problem of uneven filtration caused by the rainwater dispersed and impacting the filter screen 2233, reducing the risk of clogging, further ensuring the stable performance of the filtration and backwashing functions, and helping to improve the continuity and purity of rainwater sample collection.

[0042] Reference Figure 3 , Figure 5 - Figure 6 , Figure 9 As shown in this embodiment: a discharge pipe 243 is fixedly installed on one side of the U-shaped plate 242 through the baffle 24; a temporary storage box 15 is slidably installed inside the outer casing 1; the discharge pipe 243 is connected to the interior of the temporary storage box 15; a sewage trough 232 is opened through the inner side directly below the ring plate 23; a sewage pipe 233 is fixedly installed on the outer wall directly below the ring plate 23; the output port of the guide plate 244 corresponds to the sewage trough 232; an arc-shaped groove 241 is opened in the lower half of the baffle 24; the arc-shaped groove 241 corresponds to the sewage trough 232; filtered clean rainwater can pass through the discharge pipe 243. 43 is directly imported into the temporary storage box 15, avoiding secondary contamination during the collection process. The sliding installation design of the temporary storage box 15 facilitates subsequent sample transfer and time-sharing storage, ensuring sample integrity. Meanwhile, the wastewater containing impurities generated by backwashing flows precisely through the sewage discharge trough 232 into the sewage discharge pipe 233 and is quickly discharged outside the equipment, preventing wastewater backflow or stagnation. This ensures that the sewage discharge path and the sampling path are independent of each other and do not interfere with each other. This not only ensures the purity and collection continuity of rainwater samples, but also simplifies the impurity cleaning process, eliminates the need for frequent equipment disassembly, further reduces maintenance costs, and is suitable for long-term stable outdoor sampling needs.

[0043] Reference Figure 9As shown in this embodiment: multiple heating wires 247 are fixedly installed inside the guide plate 244. The multiple heating wires 247 are arranged at intervals. In low-temperature scenarios such as Hulunbuir, the heating wires 247 can generate heat to heat the backwash rainwater flowing through, preventing the rainwater from freezing and clogging inside the guide plate 244, the diamond-shaped through holes 246, or the sewage discharge path, ensuring the continuous and stable operation of the backwash and sewage discharge functions in low-temperature environments; it can also indirectly act on the filter group 223 below through heat conduction, preventing the filter screen 2233 surface from forming an ice shell due to low temperature and causing filtration failure. At the same time, the heated backwash rainwater can also enhance the peeling effect on the surface of the filter screen 2233, especially for sticky impurities that are easy to solidify at low temperatures, further improving the cleaning efficiency. It effectively solves the problem that conventional equipment is prone to freezing and clogging and cannot work normally in extreme low temperatures, significantly improving the environmental adaptability and operational reliability of the equipment in cold regions.

[0044] Reference Figure 6 - Figure 7 As shown in this embodiment: the inner wall of the ring plate 23 is symmetrically provided with ring grooves 231, and the outer side of the sleeve 22 is symmetrically slidably installed with collars 224. The collars 224 are slidably fitted into the inner side of the ring grooves 231. The collars 224 are slidably fitted into the ring grooves 231, which not only provides stable guidance and limit for the rotational movement of the sleeve 22, but also prevents the sleeve 22 from deviating or shaking under the drive of the servo motor 21, ensuring the stability and motion accuracy of the filter group 223 during rotation, ensuring the precise coordination of the filter group 223's form switching, rainwater filtration and backwashing actions, extending the equipment's endurance and service life, and further ensuring the continuous and stable operation of sampling work in complex outdoor environments.

[0045] Reference Figure 1 - Figure 3As shown in this embodiment: a comb-shaped rain sensor 11 is fixedly installed on the outside of the outer box 1, the detection end of the comb-shaped rain sensor 11 is exposed on the surface of the outer box 1, a servo motor 12 is fixedly installed inside the outer box 1, a connecting rod 13 is symmetrically rotated on the outside of the outer box 1, and a protective cover 14 is fixedly installed on one end of the connecting rod 13. A solar panel 16 is fixedly installed on the outside of the outer casing 1, and a battery 17 is fixedly installed on the inside of the outer casing 1. The comb-shaped rain sensor 11 can accurately capture precipitation signals such as rain and snow and trigger the equipment to start. With alternating anti-ionization and dynamic temperature control anti-condensation technology, it can effectively avoid misjudgment caused by environmental factors such as dew, fog, and frost. In particular, it can improve the sensitivity of light snow recognition and solve the problem of missed sampling by conventional equipment. The servo motor 12 is linked with the symmetrically rotated connecting rod 13 and protective cover 14. When there is no precipitation, the protective cover 14 is closed to prevent debris and sand from entering the equipment. When there is precipitation, it automatically opens to ensure smooth rainwater collection. The solar panel 16 efficiently converts light energy into electrical energy and stores it in the battery 17, thus forming a stable backup power supply system. This significantly improves the reliability and adaptability of operation in complex outdoor environments and fully meets the requirements of accurate and efficient rainwater sampling.

[0046] Working principle: When it rains, rainwater first flows along the surface of the collection cover 26 into the guide box 25. At the same time, the servo motor 21 drives the sleeve 22 to rotate, so that multiple filter groups 223 will rotate synchronously around the sleeve 22 as the axis. During the circumferential rotation, when the driven rod 2235 is not inside the arc groove 241, due to the contact with the surface of the baffle 24, the driven rod 2235 will generate a pushing force from both sides to push the filter group 223, and simultaneously stretch the spring 2234, forcing the shaft 2231 to slide only along the inside of the positioning groove 221. This changes the angle between the connecting rod 2232 and the shaft 2231, thereby causing the filter screen 2233 to change synchronously, causing the filter group 223 to change from a flat shape to a reciprocating wave shape. The wave-like shape causes rainwater carrying impurities to fall onto the surface of filter assembly 223. Due to the impact of the falling rainwater, most of the impurities are concentrated at the bottom of the wave. The filtered rainwater is collected in the U-shaped plate 242. When the driven rod 2235 moves to the inside of the arc-shaped groove 241, the spring 2234 will pull the filter assembly 223 from both sides, causing the filter assembly 223 to change from a reciprocating wave shape back to a flat shape. A small portion of the filtered rainwater in the U-shaped plate 242 will flow through the guide plate 244 and pass through the diamond-shaped through-hole 246, and backwash the filter screen 2233 in the valley area with a large flow rate, while the filter screen 2233 in the non-valley area will be backwashed with a small flow rate.

[0047] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A rainwater harvesting device based on solar power that prevents pollution and clogging, characterized in that: Includes an outer casing, the interior of which is equipped with a rainwater collection component; The rainwater collection component includes a servo motor fixedly connected to the inner wall of the outer casing. A sleeve is fixedly installed on the drive end of the servo motor. An annular plate is rotatably sleeved on the outer side of the sleeve. The annular plate is fixedly connected to the inner wall of the outer casing. A flow guide box is fixedly installed directly above the annular plate. A collection cover is fixedly installed on the upper end of the flow guide box. Baffles are fixedly installed on both sides of the annular plate. Both sets of baffles have arc-shaped grooves on their sides that are close to each other. A U-shaped plate is fixedly installed on the side that is close to each other. A guide plate is fixedly installed on the inner side directly below the U-shaped plate. A backflushing plate is fixedly installed on the inner side of the guide plate. Multiple sets of diamond-shaped through holes are arranged through the inner side of the backflushing plate. The inner side of the sleeve is provided with multiple sets of positioning grooves arranged in a circumferential interval. The surface of the positioning groove is provided with multiple sliding grooves symmetrically. The multiple sliding grooves are arranged in an alternating interval. The inner side of each set of positioning grooves is provided with a filter group. The filter assembly includes multiple shafts slidably connected to the slide groove. Adjacent shafts are symmetrically mounted with connecting rods. A filter screen is fixedly mounted between the shafts and the connecting rods. Each of the two sets of connecting rods has a driven rod symmetrically and movablely mounted on one side away from each other, and a spring is symmetrically fixedly mounted on the other side. The driven rod passes through the sleeve and is slidably connected. The other end of the driven rod slides against the baffle. The other end of the spring is fixedly connected to the sleeve. The multiple sets of filter assemblies have the same structural composition.

2. The rainwater harvesting device based on solar power for pollution prevention and clogging prevention according to claim 1, characterized in that: The flow guide box is connected to the inside of the collection cover, and inclined plates are symmetrically fixedly installed on the inner wall of the flow guide box.

3. The rainwater harvesting device based on solar power for pollution prevention and clogging prevention according to claim 1, characterized in that: A sample discharge tube is fixedly installed on one side of the U-shaped plate through the baffle. A temporary storage box is slidably installed inside the outer box, and the sample discharge tube is connected to the inside of the temporary storage box.

4. The rainwater harvesting device based on solar power for preventing pollution and clogging as described in claim 1, characterized in that: A drain trough is provided through the inner side directly below the ring plate, and a drain pipe is fixedly installed on the outer wall directly below the ring plate. The output port of the guide plate corresponds to the drain trough.

5. The rainwater harvesting device based on solar power for pollution prevention and clogging prevention according to claim 1, characterized in that: Multiple heating wires are fixedly installed inside the guide plate, and the multiple heating wires are arranged at intervals.

6. The rainwater harvesting device based on solar power for preventing pollution and clogging as described in claim 4, characterized in that: The arc-shaped groove is formed in the lower half of the baffle, and the arc-shaped groove corresponds to the sewage discharge trough.

7. The rainwater harvesting device based on solar power for preventing pollution and clogging as described in claim 1, characterized in that: The inner wall of the ring plate is symmetrically provided with ring grooves, and the outer side of the sleeve is symmetrically slidably installed with collars, which are slidably fitted into the inner side of the ring grooves.

8. The rainwater harvesting device based on solar power for preventing pollution and clogging as described in claim 1, characterized in that: A comb-shaped rain sensor is fixedly installed on the outside of the outer casing, and the detection end of the comb-shaped rain sensor is exposed on the surface of the outer casing.

9. The rainwater harvesting device based on solar power for preventing pollution and clogging as described in claim 1, characterized in that: A second servo motor is fixedly installed inside the outer casing, and a connecting rod is symmetrically and rotatably installed on the outside of the outer casing. A protective cover is fixedly installed on one end of the connecting rod.

10. The rainwater harvesting device based on solar power for pollution prevention and clogging prevention according to claim 1, characterized in that: A solar panel is fixedly installed on the outside of the outer casing, and a storage battery is fixedly installed on the inside of the outer casing.

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