Building roof rainwater collection and cyclic utilization integrated equipment
By using a support shaft tube, drive mechanism, and automatic sewage discharge system, the problems of mesh clogging and the inability to automatically discharge sludge and impurities in rainwater collection equipment on building roofs have been solved, thereby improving rainwater collection efficiency and ensuring stable operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NORTHWEST ENGINEERING CORPORATION LIMITED
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-14
AI Technical Summary
When using existing integrated equipment for collecting and recycling rainwater from building roofs, the intercepting mesh is easily clogged by debris accumulation, and the sludge and impurities separated by the filtration mechanism cannot be automatically discharged, affecting the equipment's operating efficiency and safety.
The system employs a support shaft tube and support rod structure, combined with a drive mechanism consisting of a motor, a drive gear, and a driven gear, to achieve automatic cleaning of the screen plate anti-clogging scraper. A drain outlet and an electric valve are installed at the bottom of the decontamination chamber to construct an automatic sewage discharge system. A photocatalytic self-cleaning coating is applied to the surface of the interception screen plate and the water collection shed, combined with a filtration device consisting of quartz sand, activated carbon, and an ultrafiltration membrane layer, to achieve automatic sewage discharge and self-cleaning.
It effectively prevents screen blockage, maintains stable rainwater flow rate, enables automatic sewage discharge, reduces the need for manual maintenance, and ensures efficient equipment operation and improved water quality.
Smart Images

Figure CN224119624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rainwater harvesting device technology, specifically to an integrated device for collecting and recycling rainwater from building roofs. Background Technology
[0002] In order to improve the utilization rate of water resources and solve the problem of water scarcity, rainwater collection systems are built in urban construction. During the rainy season, roads and roofs are the best places to collect rainwater. Collecting rainwater from roofs can also prevent rainwater from accumulating on the roof and causing water seepage in buildings.
[0003] Existing integrated rainwater harvesting and recycling equipment suffers from various problems during long-term use. Rainwater carries a wide variety of debris, including leaves, branches, dust, and garbage. As it flows through the intercepting mesh, a large amount of this debris gradually accumulates on the mesh surface and in the mesh openings. Over time, the mesh openings become increasingly clogged with debris, reducing the effective water passage area of the mesh and significantly decreasing the flow rate of rainwater. This severely impacts the overall flow rate and efficiency of the rainwater harvesting system. During heavy rainfall, clogged intercepting meshes can even cause significant rainwater accumulation on the roof, increasing the roof load and posing safety hazards. This severely limits the normal operation of the equipment and the effectiveness of rainwater harvesting. Furthermore, after the filtration mechanism filters the rainwater, the separated sludge and impurities accumulate in specific areas of the equipment, such as the sedimentation tank or the bottom of the filter pool. Without an automatic sludge removal device, these sludge and impurities need to be manually cleaned periodically. Insufficient cleaning can lead to excessive accumulation of sludge and impurities within the equipment, affecting its normal operation and reducing filtration efficiency. Utility Model Content
[0004] In view of the problems existing in the above-mentioned integrated equipment for collecting and recycling rainwater from building roofs, this utility model is proposed.
[0005] Therefore, the purpose of this utility model is to provide an integrated device for collecting and recycling rainwater from building roofs, which solves the problems that existing integrated devices for collecting and recycling rainwater from building roofs are prone to blockage by debris accumulation on the top interceptor mesh, and that the sludge and other impurities filtered and separated by the filtration mechanism cannot be automatically discharged after separation.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An integrated device for collecting and recycling rainwater from building roofs includes a water collection shed, with an intercepting mesh plate fixedly connected to the top of the water collection shed through an opening, a water collection hopper fixedly connected to the bottom of the water collection shed, a support platform fixedly connected to the bottom of the water collection hopper, a water supply pipe fixedly connected to the side wall of the water collection hopper, a sludge removal chamber fixedly connected to the other end of the water supply pipe, a filter device fixedly connected to the bottom plate of the support platform, the other end of the sludge removal chamber fixedly connected to the input end of the filter device, and a water storage tank fixedly connected to the bottom output end of the filter device.
[0008] The top of the intercepting mesh plate is fixedly connected to a support shaft tube through an opening. A support rod is rotatably connected inside the cavity of the support shaft tube. One end of the support rod is equipped with a drive mechanism. The other end of the support rod passes through the support shaft tube and is fixedly connected to a mesh plate anti-clogging scraper. An inlet anti-clogging scraper is fixedly connected to the wall of the support rod. A coarse filter screen is fixedly connected to one end of the cavity of the decontamination chamber. A sewage outlet is opened at the bottom of the decontamination chamber and is fixedly connected to a first electric valve.
[0009] Preferably, the driving mechanism includes a motor, a driving gear, and a driven gear. The motor is fixedly connected inside the cavity of the support platform. One end of the motor passes through the side wall of the water collection hopper and is fixedly connected to the driving gear. One end of the support rod is fixedly connected to the driven gear, and the driven gear and the driving gear are meshed together.
[0010] Preferably, the filtration device has a quartz sand filter layer, an activated carbon filter layer, and an ultrafiltration membrane layer fixedly connected from top to bottom inside the cavity.
[0011] Preferably, the bottom of the water collection shed is fixedly connected with multiple threaded connection ends, and the bottom of each threaded connection end is threadedly connected with a support column.
[0012] Furthermore, a second electric valve is fixedly connected to the output end of the water storage tank, and a polyurethane foam insulation layer is provided inside the side wall cavity of the water storage tank.
[0013] Preferably, the surface of both the water collection shed and the interception net plate is provided with a photocatalytic self-cleaning coating.
[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0015] 1. This utility model utilizes a support shaft tube installed at the top of the intercepting mesh panel, and a support rod inside the support shaft tube cavity. A drive mechanism consisting of a motor, a drive gear, and a driven gear rotates the support rod, causing the anti-clogging scraper of the mesh panel and the anti-clogging scraper of the inlet to rotate accordingly. When rainwater carrying debris flows through the intercepting mesh panel, the accumulated debris is continuously scraped away, maintaining the effective water passage area of the intercepting mesh panel, ensuring a stable rainwater flow rate, significantly improving rainwater collection efficiency, and avoiding the risk of reduced collection volume and roof water accumulation due to mesh panel blockage.
[0016] 2. This utility model utilizes a drain outlet and a first electric valve located at the bottom of the decontamination chamber, combined with a coarse filter screen inside the chamber, to construct an automatic decontamination system. After rainwater enters the decontamination chamber, the coarse filter screen intercepts and settles large particles of impurities. By controlling the opening time and frequency of the first electric valve, regular automatic decontamination is achieved, eliminating the need for frequent manual cleaning, saving manpower and resources, and ensuring the continuous and stable operation of the equipment.
[0017] 3. This utility model utilizes a photocatalytic self-cleaning coating on the surface of the water collection shed and the interception net plate, which can oxidize and decompose pollutants under light to achieve self-cleaning, reducing the impact of impurities on the collection effect. The polyurethane foam insulation layer installed in the side wall cavity of the water storage tank can prevent the water source from freezing in cold weather and ensure the normal operation of the equipment. The quartz sand filter layer, activated carbon filter layer and ultrafiltration membrane layer installed in the filtration device can achieve fine filtration of rainwater and improve water quality. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0020] Figure 2 This is a front sectional view of the present invention;
[0021] Figure 3 This is a partial cross-sectional view of the present invention;
[0022] Figure 4 This is a partial cross-sectional view of the present invention.
[0023] Explanation of reference numerals in the attached figures:
[0024] 1. Water collection shed; 2. Interception mesh plate; 3. Water collection hopper; 4. Support platform; 5. Water supply pipe; 6. Sludge removal chamber; 7. Filtration device; 8. Water storage tank; 9. Support shaft tube; 10. Support rod; 11. Mesh plate anti-clogging scraper; 12. Inlet anti-clogging scraper; 13. Coarse filter screen; 14. Sewage outlet; 15. First electric valve; 16. Motor; 17. Drive gear; 18. Driven gear; 19. Quartz sand filter layer; 20. Activated carbon filter layer; 21. Ultrafiltration membrane layer; 22. Threaded connection end; 23. Support column; 24. Second electric valve. Detailed Implementation
[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0026] This utility model discloses an integrated device for collecting and recycling rainwater from building roofs.
[0027] This utility model provides, for example Figure 1-4 The device shown is an integrated equipment for collecting and recycling rainwater from building roofs, including a water collection shed 1. An intercepting mesh plate 2 is fixedly connected to the top of the water collection shed 1 through an opening. A water collection hopper 3 is fixedly connected to the bottom of the water collection shed 1. A support platform 4 is fixedly connected to the bottom of the water collection hopper 3. A water supply pipe 5 is fixedly connected to the side wall of the water collection hopper 3. A dirt removal chamber 6 is fixedly connected to the other end of the water supply pipe 5. A filter device 7 is fixedly connected to the bottom plate of the support platform 4. The other end of the dirt removal chamber 6 is fixedly connected to the input end of the filter device 7. A water storage tank 8 is fixedly connected to the bottom output end of the filter device 7.
[0028] A support shaft tube 9 is fixedly connected to the top of the intercepting mesh plate 2 through an opening. A support rod 10 is rotatably connected inside the cavity of the support shaft tube 9. One end of the support rod 10 is equipped with a drive mechanism, and the other end of the support rod 10 passes through the support shaft tube 9 and is fixedly connected to a mesh plate anti-clogging scraper 11. An inlet anti-clogging scraper 12 is fixedly connected to the wall of the support rod 10. A coarse filter screen 13 is fixedly connected to one end of the cavity of the dirt removal chamber 6. A drain port 14 is opened at the bottom of the dirt removal chamber 6 and is fixedly connected to a first electric valve 1. 5. The rainwater collection shed 1 facilitates rainwater collection. A support shaft tube 9 is installed on top of the intercepting mesh plate 2, and a support rod 10 is rotatably connected within its cavity. A drive mechanism drives the support rod 10, enabling the rotation of the anti-clogging scraper 11 and the inlet anti-clogging scraper 12. When rainwater carrying debris flows through the intercepting mesh plate 2, the drive mechanism rotates the support rod 10, allowing the anti-clogging scraper 11 to continuously scrape away debris accumulated on the surface and mesh openings of the intercepting mesh plate 2. This system avoids the problem of debris accumulating and clogging the mesh over time, ensuring that the effective water passage area of the intercepting mesh plate 2 remains stable and significantly increasing the flow rate of rainwater through the intercepting mesh plate 2. A complete automatic sewage discharge system is constructed by using a sewage outlet 14 at the bottom of the sewage removal chamber 6, equipped with a first electric valve 15, and a coarse filter screen 13 fixedly connected to one end of the chamber. When rainwater enters the sewage removal chamber 6 through the water supply pipe 5, the coarse filter screen 13 intercepts larger particles of impurities, which settle at one end of the chamber. By controlling the opening time and frequency of the first electric valve 15, periodic automatic sewage discharge can be achieved. The filtered rainwater is collected using a water storage tank 8, and further filtered using a filtration device 7. This solves the problem that existing integrated rainwater collection and recycling equipment for building roofs is prone to clogging due to debris accumulation on the top intercepting mesh plate, and that the sludge and other impurities separated by the filtration mechanism cannot be automatically discharged after separation.
[0029] In order to drive the support rod 10 to rotate, such as Figure 3 As shown, the drive mechanism includes a motor 16, a drive gear 17, and a driven gear 18. The motor 16 is fixedly connected inside the cavity of the support platform 4. One end of the motor 16 passes through the side wall of the water collection hopper 3 and is fixedly connected to the drive gear 17. One end of the support rod 10 is fixedly connected to the driven gear 18. The driven gear 18 and the drive gear 17 are meshed together. By rotating the drive gear 17 at one end of the motor 16, it meshes with the driven gear 18, thereby driving the support rod 10, which is fixedly connected to the driven gear 18, to rotate.
[0030] In order for the filter device 7 to achieve the fine filtration function, such as Figure 3As shown, the filtration device 7 has a quartz sand filter layer 19, an activated carbon filter layer 20 and an ultrafiltration membrane layer 21 fixedly connected from top to bottom inside the cavity. By utilizing the quartz sand filter layer 19, the activated carbon filter layer 20 and the ultrafiltration membrane layer 21, the filtration device 7 can achieve the function of fine filtration.
[0031] To enhance the support effect of water collection shed 1, such as Figure 1 and 2 As shown, the bottom of the water collection shed 1 is fixedly connected with multiple threaded connection ends 22, and the bottom of each threaded connection end 22 is threadedly connected with a support column 23. By using the multiple threaded connection ends 22 and support columns 23, the support effect of the water collection shed 1 is strengthened.
[0032] To facilitate the drainage and use of water in storage tank 8 and to prevent the water from freezing in cold weather, such as Figure 1-3 As shown, the output end of the water storage tank 8 is fixedly connected to a second electric valve 24. The side wall cavity of the water storage tank 8 is provided with a polyurethane foam insulation layer. The second electric valve 24 is used to facilitate the discharge of water from the water storage tank 8 for use. The polyurethane foam insulation layer is used to prevent the water from freezing in cold weather.
[0033] To reduce the adhesion of pollutants, such as Figure 1 and 2 As shown, the surfaces of the water collection shed 1 and the interception net plate 2 are both equipped with a photocatalytic self-cleaning coating. Under light conditions, the photocatalyst absorbs photon energy and can oxidize and decompose pollutants such as organic matter and dust attached to the coating surface, converting them into small molecules such as carbon dioxide and water. Under the action of rainwater or natural wind, the decomposed pollutants are removed from the coating surface, thereby achieving a self-cleaning effect.
[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. An integrated device for collecting and recycling rainwater from building roofs, comprising a rainwater collection shed (1), characterized in that, The top of the water collection shed (1) is fixedly connected to an intercepting net plate (2) through an opening. The bottom of the water collection shed (1) is fixedly connected to a water collection hopper (3). The bottom of the water collection hopper (3) is fixedly connected to a support platform (4). The side wall of the water collection hopper (3) is fixedly connected to a water supply pipe (5). The other end of the water supply pipe (5) is fixedly connected to a dirt removal chamber (6). The bottom plate of the support platform (4) is fixedly connected to a filter device (7). The other end of the dirt removal chamber (6) is fixedly connected to the input end of the filter device (7). The bottom output end of the filter device (7) is fixedly connected to a water storage tank (8). The top of the intercepting mesh plate (2) is fixedly connected to a support shaft tube (9) through an opening. A support rod (10) is rotatably connected inside the cavity of the support shaft tube (9). One end of the support rod (10) is provided with a driving mechanism. The other end of the support rod (10) passes through the support shaft tube (9) and is fixedly connected to a mesh plate anti-clogging scraper (11). An inlet anti-clogging scraper (12) is fixedly connected to the wall of the support rod (10). A coarse filter screen (13) is fixedly connected to one end of the cavity of the decontamination chamber (6). A sewage outlet (14) is opened at the bottom of the decontamination chamber (6) and is fixedly connected to a first electric valve (15).
2. The integrated equipment for collecting and recycling rainwater from building roofs according to claim 1, characterized in that, The drive mechanism includes a motor (16), a drive gear (17), and a driven gear (18). The motor (16) is fixedly connected inside the cavity of the support platform (4). One end of the motor (16) passes through the side wall of the water collection bucket (3) and is fixedly connected to the drive gear (17). One end of the support rod (10) is fixedly connected to the driven gear (18). The driven gear (18) and the drive gear (17) are meshed together.
3. The integrated equipment for collecting and recycling rainwater from building roofs according to claim 1, characterized in that, The filtration device (7) has a quartz sand filter layer (19), an activated carbon filter layer (20), and an ultrafiltration membrane layer (21) fixedly connected from top to bottom inside the cavity.
4. The integrated equipment for collecting and recycling rainwater from building roofs according to claim 1, characterized in that, The bottom of the water collection shed (1) is fixedly connected with multiple threaded connection ends (22), and each threaded connection end (22) is threadedly connected with a support column (23) at its bottom.
5. The integrated equipment for collecting and recycling rainwater from building roofs according to claim 1, characterized in that, The output end of the water storage tank (8) is fixedly connected to a second electric valve (24), and the side wall cavity of the water storage tank (8) is provided with a polyurethane foam insulation layer.
6. The integrated equipment for collecting and recycling rainwater from building roofs according to claim 1, characterized in that, The surfaces of the water collection shed (1) and the interception net plate (2) are both provided with a photocatalytic self-cleaning coating.