A roof rainwater collecting device
By designing the filtration and cleaning mechanisms of the roof rainwater harvesting device, the problem of impurity accumulation during rainwater collection was solved, enabling smooth filtration and collection of rainwater and improving the system's operating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- POWERCHINA HUADONG ENG CORP LTD
- Filing Date
- 2026-04-29
- Publication Date
- 2026-07-21
AI Technical Summary
Rainwater from rooftops is prone to accumulating impurities during collection, leading to blockages in the collection inlets, a problem that is difficult to solve effectively with existing technologies.
Design a roof rainwater collection device, comprising a main body, a top cover, a filtration mechanism, a drain pipe, and a pipe wall cleaning mechanism. Through the rotation cleaning of the filter pipe and the spherical shell, the scraping of the scraper, and the cleaning mechanism of the top cover, the device can automatically clean and filter impurities.
It effectively prevents clogging of the collection inlet, ensures smooth rainwater filtration and collection, and improves the operating efficiency and reliability of the rainwater harvesting system.
Smart Images

Figure CN122428697A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a rainwater collection device for roofs. It falls under the technical field of rainwater harvesting equipment. Background Technology
[0002] Urban rainwater harvesting systems are a systematic set of equipment that collects, purifies, stores, utilizes, and replenishes urban rainfall. They aim to transform rainwater, which is prone to causing flooding, into usable resources through scientific and technological means, while alleviating urban water shortages and ecological pressures. As one of the core infrastructures for sponge city construction, an urban rainwater harvesting system is not a single device but an integrated system composed of "water collection components, pretreatment systems, purification devices, storage facilities, and control systems." It can manage the entire process of rainwater collection from rooftops, roads, and green spaces to "safe utilization and groundwater recharge," adapting to the needs of different climate zones, including rainy and arid regions.
[0003] When collecting rainwater from the roof during rainy days, impurities tend to accumulate on the roof and flow into the collection equipment along with the rainwater. These impurities can accumulate at the collection inlet, causing blockage. Summary of the Invention
[0004] The technical problem to be solved by the present invention is: to solve the above-mentioned technical problem, the present invention provides a roof rainwater collection device.
[0005] The technical solution adopted in this invention is: a roof rainwater collection device, comprising: The main body of the device is installed on the roof, and a chamber is set inside the main body of the device. The top cover is located at the top of the main body of the device. A through hole is made on the top cover, and a filter mechanism is installed at the through hole of the top cover. The drain pipe is connected to the bottom of the main body of the device, and a drain valve is installed on the drain pipe.
[0006] The filtering mechanism has a filter tube installed in a through hole, the lower end of the filter tube is connected to the chamber, the cross-section of the inner wall of the filter tube is circular, a connecting shaft arranged in the radial direction of the filter tube is installed on the inner wall of the upper end of the filter tube, and a spherical shell is installed at the upper end of the filter tube. The spherical shell is rotatably fitted on the connecting shaft, and filter holes are evenly arranged on the spherical shell.
[0007] A scraper frame is fixedly installed on the connecting shaft, and the scraper frame can contact the inner wall of the spherical shell.
[0008] A pipe wall cleaning mechanism is installed inside the filter pipe. The pipe wall cleaning mechanism has a rotating shaft installed inside the filter pipe along the axis of the filter pipe. A rotating frame that can rotate with the rotating shaft is installed on the rotating shaft. A scraper that can contact the inner wall of the filter pipe is installed on the rotating frame. An impeller is installed at the lower end of the rotating shaft. When the water flows inside the filter pipe, it can drive the impeller to rotate.
[0009] A telescopic rod is installed on the rotating frame, arranged radially along the filter cylinder, and a first spring is fitted over the telescopic rod.
[0010] Adjacent filter tubes are connected by a connecting pipe.
[0011] The top cover surface is inclined, and a sliding groove is provided on the top cover along the inclined direction. A sliding rod is provided in the sliding groove along the length of the sliding groove. A slider that slides and engages with the sliding groove is installed in the sliding groove. The sliding rod passes through the slider, and a cleaning mechanism for cleaning the top cover surface is installed on the slider.
[0012] The cleaning mechanism has a contact frame mounted on a slider via a contact rod. A contact plate is installed on the contact frame at a position corresponding to the spherical shell. A first cleaning brush is provided on the contact plate. A sponge block is installed between two adjacent contact plates on the contact frame. A second cleaning brush is installed at the lower end of the sponge block.
[0013] A second spring is fitted onto the slide bar on one side of the slider, with its two ends connected to the slider and the inner wall of the slide groove end, respectively.
[0014] A buffer plate is installed on the bottom plate inside the main chamber of the device. Drainage holes are evenly distributed on the buffer plate, and a buffer frame is installed on the buffer plate at the position corresponding to the drain pipe.
[0015] The beneficial effects of this invention are as follows: The invention arranges the main body of the device, which has a built-in chamber, on the roof. A through hole is provided on the top cover of the main body, and a filter mechanism is installed within the through hole. A drain pipe is provided at the bottom of the main body, and a drain valve is installed on the drain pipe. After rainwater drips onto the roof, it flows on the top cover of the main body. During this flow, the rainwater flows through the filter mechanism into the filter pipe and then into the chamber of the main body. By opening the drain valve on the drain pipe, the rainwater stored in the chamber of the main body can be discharged.
[0016] This invention provides a pipe wall cleaning mechanism inside the filter tube, which facilitates the rotation of the impeller as water flows through the filter tube, thereby driving the rotating shaft, rotating frame, and scraper to rotate. During the rotation, the scraper comes into contact with the inner wall of the filter tube, thus cleaning the inner wall of the filter tube. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the present invention.
[0018] Figure 2 This is a cross-sectional view of the present invention.
[0019] Figure 3 This is a schematic diagram of the filtration mechanism in this invention.
[0020] Figure 4 This is a cross-sectional view of the filter mechanism of the present invention.
[0021] Figure 5 This is a schematic diagram of the structure of the spherical shell in this invention.
[0022] Figure 6 This is a schematic diagram of the pipe wall cleaning mechanism in this invention.
[0023] Figure 7 This is a schematic diagram of the cleaning mechanism in this invention.
[0024] Figure 8 This is a schematic diagram of the contact frame structure in this invention.
[0025] In the diagram: 1. Base; 2. Filtering mechanism; 21. Filter tube; 22. Connecting tube; 23. Rotating mechanism; 231. Spherical shell; 232. Connecting shaft; 233. Scraper frame; 24. Pipe wall cleaning mechanism; 241. Impeller; 242. Rotating shaft; 243. Rotating frame; 244. Telescopic rod; 245. Scraper; 246. First spring; 3. Top cover; 4. Cleaning components; 41. Slide groove; 42. Slide rod; 43. Second spring; 44. Sweeping mechanism; 441. Contact frame; 442. Contact rod; 443. Slider; 444. Contact plate; 445. Second cleaning brush; 446. Sponge block; 5. Drainage mechanism; 51. Base plate; 52. Drain pipe; 53. Buffer plate; 54. Buffer frame. Detailed Implementation
[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0027] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0028] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.
[0029] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0031] Example 1 is a roof rainwater collection device. In this example, it has: The main body of the device 1 is laid on the roof, and a chamber 5 is provided inside the main body of the device 1; The top cover 3 is located at the top of the main body 1 of the device. The top cover 3 has a through hole, and a filter mechanism 2 is installed at the through hole of the top cover 3. A drain pipe is connected to the bottom of the main body 1 of the device, and a drain valve is installed on the drain pipe. Thus, after rainwater drips onto the main body 1 on the roof, it flows into the chamber 5 of the main body 1 through a through hole on the top cover 3. As the rainwater flows through the through hole, it is filtered by a filter mechanism 2 inside the through hole. The filtered rainwater is collected in the chamber 5 of the main body 1, and the collected rainwater can be drained out by opening the drain valve on the drain pipe.
[0032] In this embodiment, the filter mechanism 2 has a filter tube 21 installed in the through hole. The lower end of the filter tube 21 is connected to the chamber 5. The cross-section of the inner wall of the filter tube 21 is circular. A rotating mechanism 23 is provided at the upper end of the filter tube 21. The rotating mechanism 23 includes a connecting shaft 232 installed on the inner wall of the upper end of the filter tube 21 and arranged in the radial direction of the filter tube 21. A spherical shell 231 is installed at the upper end of the filter tube 21. The spherical shell 231 is rotatably fitted onto the connecting shaft 232. Filter holes are evenly arranged on the spherical shell 231. Thus, as water flows from the top cover 3 of the device body 1 to the through hole, the water flows through the filter holes on the spherical shell 231. During the water flow, the water pushes the spherical shell 231 to rotate. During the rotation of the spherical shell 231, the surface of the spherical shell 231 contacts the end of the filter tube 21, thereby cleaning the surface of the spherical shell 231.
[0033] In this embodiment, a scraper frame 233 is fixedly installed on the connecting shaft 232, and the scraper frame 233 can contact the inner wall of the spherical shell 231. Thus, as the water flow drives the spherical shell 231 to rotate, the scraper frame 233 fixedly installed on the connecting shaft 232 will synchronously rotate relative to the spherical shell 231, thereby cleaning the inner wall of the spherical shell 231. When the weather is sunny, if the mop comes into contact with the spherical shell 231 while cleaning the surface of the main body 1, the mop will cause the spherical shell 231 to rotate within the filter tube 21. This rotation will also cause the inner side of the spherical shell 231 to come into contact with the scraper frame 233. Through the cleaning action of the scraper frame 233, any residual sludge on the inner side of the shell can be removed in advance, ensuring that the filter holes remain unobstructed during the next rainfall.
[0034] In this embodiment, two adjacent filter tubes 21 are connected by a connecting pipe 22. Thus, when the water intake of a single filter tube 21 is too large, rainwater can be diverted to the adjacent filter tubes 21 through the connecting pipe 22, and finally flow together to the main body 1 of the device for storage.
[0035] In this embodiment, a buffer plate 53 is provided on the bottom plate 51 inside the chamber of the main body 1 of the device. Drainage holes are evenly distributed on the buffer plate 53, and a buffer frame 54 is provided on the buffer plate 53 at a position corresponding to the drain pipe 52. Thus, when the drain valve on the drain pipe 52 is opened, the rainwater stored in the chamber of the main body 1 of the device will be discharged from the drain pipe 52. The drainage holes on the buffer plate 53 and the buffer frame will divert the rainwater passing through the buffer plate 53, thus slowing down the flow and preventing excessive impact when the rainwater flows out.
[0036] Example 2 is a roof rainwater collection device. Based on Example 1, this example includes a pipe wall cleaning mechanism 24 inside the filter pipe 21. The pipe wall cleaning mechanism 24 has a rotating shaft 242 installed inside the filter pipe 21 along its axial direction. A rotating frame 243, which rotates with the rotating shaft 242, is mounted on the rotating shaft 242. A scraper 245, which contacts the inner wall of the filter pipe 21, is mounted on the rotating frame 243. An impeller 241 is mounted at the lower end of the rotating shaft 242. Water flowing through the filter pipe 21 drives the impeller 241 to rotate. Thus, when rainwater drips onto the device body 1 on the roof and flows into the device body 1 through the filter pipe 21, the water flow drives the impeller 241 to rotate. This, in turn, drives the rotating shaft 242 and the rotating frame 243 to rotate. During the rotation of the rotating frame 243, the scraper 245 on the rotating frame 243 contacts the inner wall of the filter pipe 21 and cleans it.
[0037] In this embodiment, a telescopic rod 244 arranged radially along the filter cylinder is installed on the rotating frame 243, and a first spring 246 is fitted over the telescopic rod 244. Thus, when the scraper 245 contacts the inner side of the filter tube 21, if impurities adhere to the inner wall of the filter plate, causing excessive contact force, the scraper 245 will compress the first spring 246 fitted on the telescopic rod 244. This causes the telescopic rod 244 to drive the scraper 245 and rotating frame 243 to slide radially along the rotating shaft 242, thereby buffering the contact pressure and preventing damage to the scraper 245 or the inner wall of the filter tube 21 due to excessive force. In this embodiment, the rotating frame 243 is made of a flexible material.
[0038] Example 3 is a roof rainwater collection device. Based on Example 1, in this example, the surface of the roof cover 3 is inclined. A cleaning component 4 is provided on the roof cover 3. The cleaning component 4 has a groove 41 arranged on the roof cover 3 along the inclined direction. A sliding rod 42 is arranged along the length of the groove 41 within the groove 41. A slider 443, which slides through the groove 41, is installed within the groove 41. The sliding rod 42 passes through the slider 443. A cleaning mechanism 44 for cleaning the surface of the roof cover 3 is installed on the slider 443. Thus, as the slider 443 moves along the length of the groove 41, the cleaning mechanism 44 on the slider 443 can clean the surface of the roof cover 3. The sliding engagement between the sliding rod 42 and the slider 443 provides good guidance for the movement of the slider 443.
[0039] In this embodiment, the cleaning mechanism 44 has a contact frame 441 mounted on the slider 443 via a contact rod 442. A contact plate 444 is mounted on the contact frame 441 at a position corresponding to the spherical shell 231. A first cleaning brush is provided on the contact plate 444. A sponge block 446 is installed between two adjacent contact plates 444 on the contact frame 441. A second cleaning brush 445 is installed at the lower end of the sponge block 446.
[0040] In this embodiment, a second spring 43 is fitted onto the slide rod 42 on one side of the slider 443. The two ends of the second spring 43 are respectively connected to the slider 443 and the inner wall of the end of the slide groove 41. In this embodiment, the second spring 43 is installed on the lower side of the slider 443. Thus, in the event of rainfall, the sponge block 446 absorbs rainwater, increasing its weight. This increased weight causes the contact frame 441 and the slider 443 to move downwards along the inclined direction of the top cover 3. During the movement of the contact frame 441, the first cleaning brush cleans the surface of the spherical shell 231, and the second cleaning brush 445 cleans other areas of the top cover 3. At this time, the second spring 43 is compressed. After the rainfall ends, the water on the sponge block 446 evaporates, reducing its weight. With this reduced weight, the second spring 43, acting as a reset mechanism, causes the contact frame 441 and the slider 443 to move upwards along the inclined direction of the top cover 3. During the movement of the contact frame 441, the first cleaning brush cleans the surface of the spherical shell 231, and the second cleaning brush 445 cleans other areas of the top cover 3.
[0041] Example 4 is a roof rainwater collection device, which has: The main body of the device 1 is laid on the roof, and a chamber 5 is provided inside the main body of the device 1; The top cover 3 is located at the top of the main body 1 of the device. The top cover 3 has a through hole, and a filter mechanism 2 is installed at the through hole of the top cover 3. A drain pipe is connected to the bottom of the main body 1 of the device, and a drain valve is installed on the drain pipe.
[0042] The filter mechanism 2 has a filter tube 21 installed in the through hole. The lower end of the filter tube 21 is connected to the chamber 5. The cross-section of the inner wall of the filter tube 21 is circular. A connecting shaft 232 arranged in the radial direction of the filter tube 21 is installed on the inner wall of the upper end of the filter tube 21. A spherical shell 231 is installed at the upper end of the filter tube 21. The spherical shell 231 is rotatably fitted on the connecting shaft 232. Filter holes are evenly arranged on the spherical shell 231.
[0043] A scraper frame 233 is fixedly installed on the connecting shaft 232, and the scraper frame 233 can contact the inner wall of the spherical shell 231.
[0044] A pipe wall cleaning mechanism 24 is provided inside the filter pipe 21. The pipe wall cleaning mechanism 24 has a rotating shaft 242 installed inside the filter pipe 21 along the axial direction of the filter pipe 21. A rotating frame 243 that can rotate with the rotating shaft 242 is installed on the rotating shaft 242. A scraper 245 that can contact the inner wall of the filter pipe 21 is installed on the rotating frame 243. An impeller 241 is installed at the lower end of the rotating shaft 242. When the water flows inside the filter pipe 21, it can drive the impeller 241 to rotate.
[0045] A telescopic rod 244 arranged radially along the filter cartridge is mounted on the rotating frame 243, and a first spring 246 is fitted over the telescopic rod 244.
[0046] The two adjacent filter tubes 21 are connected by a connecting tube 22.
[0047] The top cover 3 has an inclined surface and a sliding groove 41 arranged along the inclined direction is provided on the top cover 3. A sliding rod 42 arranged along the length direction of the sliding groove 41 is provided in the sliding groove 41. A slider 443 that slides and engages with the sliding groove 41 is installed in the sliding groove 41. The sliding rod 42 passes through the slider 443. A cleaning mechanism 44 for cleaning the surface of the top cover 3 is installed on the slider 443.
[0048] The cleaning mechanism 44 has a contact frame 441 mounted on the slider 443 via a contact rod 442. A contact plate 444 is mounted on the contact frame 441 at a position corresponding to the spherical shell 231. A first cleaning brush is provided on the contact plate 444. A sponge block 446 is installed between two adjacent contact plates 444 on the contact frame 441. A second cleaning brush 445 is installed at the lower end of the sponge block 446.
[0049] A second spring 43 is fitted onto the slide rod 42 on one side of the slider 443. The two ends of the second spring 43 are respectively connected to the slider 443 and the inner wall of the end of the slide groove 41.
[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A roof rainwater collection device, characterized in that: have: The main body of the device (1) is laid on the roof, and a chamber is provided inside the main body of the device (1); The top cover (3) is located at the top of the main body (1) of the device. A through hole is made on the top cover (3), and a filter mechanism (2) is provided at the through hole of the top cover (3). A drain pipe (52) is connected to the bottom of the main body (1) of the device, and a drain valve is installed on the drain pipe (52).
2. The roof rainwater collection device according to claim 1, characterized in that: The filter mechanism (2) has a filter tube (21) installed in the through hole. The lower end of the filter tube (21) is connected to the chamber (5). The cross-section of the inner wall of the filter tube (21) is circular. A connecting shaft (232) arranged in the radial direction of the filter tube (21) is installed on the inner wall of the upper end of the filter tube (21). A spherical shell (231) is installed at the upper end of the filter tube (21). The spherical shell (231) is rotatably fitted on the connecting shaft (232). Filter holes are evenly arranged on the spherical shell (231).
3. The roof rainwater collection device according to claim 2, characterized in that: A scraper frame (233) is fixedly installed on the connecting shaft (232), and the scraper frame (233) can contact the inner wall of the spherical shell (231).
4. A roof rainwater collection device according to claim 2, characterized in that: A pipe wall cleaning mechanism (24) is provided inside the filter pipe (21). The pipe wall cleaning mechanism (24) has a rotating shaft (242) installed inside the filter pipe (21) along the axis of the filter pipe (21). A rotating frame (243) that can rotate with the rotating shaft (242) is installed on the rotating shaft (242). A scraper (245) that can contact the inner wall of the filter pipe (21) is installed on the rotating frame (243). An impeller (241) is installed at the lower end of the rotating shaft (242). When the water flows inside the filter pipe (21), it can drive the impeller (241) to rotate.
5. A roof rainwater collection device according to claim 4, characterized in that: A telescopic rod (244) arranged radially along the filter cylinder is installed on the rotating frame (243), and a first spring (246) is fitted over the telescopic rod (244).
6. A roof rainwater collection device according to claim 2, characterized in that: The two adjacent filter tubes (21) are connected by a connecting tube (22).
7. A roof rainwater collection device according to claim 2, characterized in that: The top cover (3) has an inclined surface. A sliding groove (41) is provided on the top cover (3) along the inclined direction. A sliding rod (42) is provided in the sliding groove (41) along the length direction of the sliding groove (41). A slider (443) is installed in the sliding groove (41) and slides with the sliding groove (41). The sliding rod (42) passes through the slider (443). A cleaning mechanism (44) for cleaning the surface of the top cover (3) is installed on the slider (443).
8. A roof rainwater collection device according to claim 7, characterized in that: The cleaning mechanism (44) has a contact frame (441) mounted on a slider (443) via a contact rod (442). A contact plate (444) is mounted on the contact frame (441) at a position corresponding to the spherical shell (231). A first cleaning brush is provided on the contact plate (444). A sponge block (446) is installed between two adjacent contact plates (444) on the contact frame (441). A second cleaning brush (445) is installed at the lower end of the sponge block (446).
9. A roof rainwater collection device according to claim 8, characterized in that: A second spring (43) is fitted on the slide bar (42) on one side of the slider (443). The two ends of the second spring (43) are respectively connected to the slider (443) and the inner wall of the end of the slide groove (41).
10. A roof rainwater collection device according to claim 1, characterized in that: A buffer plate (53) is provided on the bottom plate (51) inside the main body (1) of the device. Water leakage holes are evenly provided on the buffer plate (53). A buffer frame (54) is provided on the buffer plate (53) at the position corresponding to the drain pipe (52).