Building steel structure with rainwater collecting and filtering structure
By installing a rainwater collection and filtration system on the steel structure roof of a building, including a collection frame, interception net, siphon structure and sprinkler device, the problem of damage to water pipes by sharp debris is solved, and rainwater is used for cooling, achieving efficient rainwater filtration and building energy conservation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-03-13
AI Technical Summary
Existing rainwater harvesting and filtration systems on steel roof structures are unable to effectively intercept sharp debris, leading to damage to the lower water pipes and preventing the collection of rainwater from being used for cooling.
The building adopts a steel structure with rainwater collection and filtration, including a collection frame, interception net, siphon structure, filter box and water storage tank. Combined with a spray device, it uses the siphon structure and interception net for multiple filtration, and is intelligently controlled by a turbidity sensor and solenoid valve. The spray device is used for cooling.
It effectively intercepts and filters sharp debris, extends the life of water pipes, enables intelligent diversion and resource utilization of rainwater, reduces roof temperature, and improves building energy efficiency.
Smart Images

Figure CN121654221A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building exterior wall construction technology, specifically to a building steel structure with a rainwater collection and filtration structure. Background Technology
[0002] In steel structure roof drainage, a dedicated water collection layer is usually laid, so that rainwater is naturally discharged or collected after it falls. However, existing steel structure buildings with rainwater collection and filtration structures have the following shortcomings: they cannot solve the problem that sharp debris generated by the aging of the steel structure roof can directly enter and damage the lower water pipes due to the lack of effective filtration in the siphon rainwater hopper; and they cannot solve the problem of cooling the roof with collected rainwater. Summary of the Invention
[0003] To address the aforementioned issues, a building steel structure with a rainwater collection and filtration system is provided, aiming to effectively resolve the problems existing in the use of structural steel roofs.
[0004] The specific technical solution is as follows: A building steel structure with a rainwater harvesting and filtration system includes a steel frame, a roof, a rainwater harvesting device, and a sprinkler system. The rainwater harvesting device is used to collect, filter, and store rainwater, and includes a collection frame, a net, a siphon structure, a filter box, and a water storage tank. The collection frame is installed on the roof along the bottom edge of the roof, the net is installed inside the collection frame, and the water storage tank is connected to the collection frame in sequence through the siphon structure and the filter box. The sprinkler system is used to spray the water stored in the water storage tank onto the top of the roof to cool the roof.
[0005] Furthermore, the siphon structure includes a lower pipe, a top cover, and multiple grid plates; the base at the top of the lower pipe extends into the collection frame from the bottom of the collection frame, the top cover is located above the base, the grid plates are distributed circumferentially at intervals along the axis of the lower pipe, the bottom of the grid plates is inserted into the lower pipe, the upper part of the grid plates is inserted into the top cover, and the bottom of the lower pipe is connected to the water storage tank.
[0006] Furthermore, a filter cylinder is installed inside the base for secondary filtration of rainwater.
[0007] Furthermore, the pore diameter on the filter cartridge is smaller than that on the interceptor mesh.
[0008] Furthermore, the siphon structure also includes fasteners for further securing the top cover. The fasteners include a pressing plate, a positioning rod, a positioning torsion spring, a shaft, a positioning tube, and a positioning spring. The positioning rod is mounted on the pressing plate, the bottom of the shaft passes through the positioning tube, the positioning spring is located in the positioning tube, and both ends of the positioning spring are mounted on the shaft and the positioning tube. The upper part of the shaft is mounted on the pressing plate via the positioning torsion spring, and the positioning tube is mounted on the base.
[0009] Furthermore, the building steel structure also includes a turbidity sensor, a drain pipe, and a solenoid valve. The top of the drain pipe extends into the collection frame from the bottom. The solenoid valve is installed in the drain pipe, and the turbidity sensor is installed in the collection frame. The solenoid valve is electrically connected to the turbidity sensor. A solenoid valve is installed between the water storage tank and the collection frame.
[0010] Furthermore, the turbidity sensor is located below the interceptor net.
[0011] Furthermore, the building steel structure also includes a swing motor and a baffle. The swing motor is installed inside the collection frame, and the baffle is installed on the drive shaft of the swing motor via a connecting rod.
[0012] Furthermore, the sprinkler system includes a lift pump, a lift pipe, and a sprinkler pipe. The sprinkler pipe extends along the roof direction, and one end of the sprinkler pipe is connected to a water storage tank through the lift pipe. The lift pump is installed on the lift pipe.
[0013] Furthermore, one end of the spray pipe is rotatably sealed onto the riser pipe, and the spray pipe is mounted on the rotating servo motor.
[0014] The beneficial effects of the above scheme are: This invention adopts a detachable siphon structure, which solves the problem that the siphon rainwater hopper cannot effectively intercept sharp debris, thus causing easy damage to the drain pipe, and achieves the effect of effectively filtering impurities and extending service life. This invention uses fasteners to solve the problem of impurities entering the siphon rainwater hopper being impossible to remove and clean, thus achieving the effect of convenient disassembly and cleaning of the siphon rainwater hopper; This invention employs a combination of an interception net and a turbidity sensor, along with intelligent control of solenoid valve one and solenoid valve two, to solve the problem of excessive load caused by high-turbidity rainwater directly entering the filtration system during rainwater collection, thus achieving the effect of intelligent diversion and resource utilization of rainwater. This invention uses a micro motor to drive the baffle, which solves the problem of easy clogging on the surface of the interception net and the need for frequent manual cleaning, and achieves the effects of automatic cleaning of debris, reduced maintenance frequency and continuous rainwater collection. This invention employs a spraying mechanism, which solves the problem of excessive thermal stress on steel structure roofs during high-temperature periods, achieving the dual effects of cooling the roof by collecting rainwater, saving water, and enhancing building energy efficiency. Attached Figure Description
[0015] Figure 1 This is a structural schematic diagram of a building steel structure provided in an embodiment of the present invention; Figure 2 This is a partially exploded structural diagram of a building steel structure provided in an embodiment of the present invention; Figure 3This is a schematic diagram of the structure of the collection frame provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the siphon structure provided in an embodiment of the present invention; Figure 5 This is an exploded structural diagram of the siphon structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a fastener provided in an embodiment of the present invention. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.
[0019] like Figures 1 to 6 As shown, the building steel structure with rainwater collection and filtration structure provided in the embodiment of the present invention includes a steel frame 1, a roof 2, a rainwater collection device, and a sprinkler device; the rainwater collection device is used to collect and filter rainwater for storage, and includes a collection frame 3, an intercepting net 4, a siphon structure 7, a filter box 8, and a water storage tank 10. The collection frame 3 is installed on the roof 2 along the bottom edge of the roof 2, the intercepting net 4 is installed inside the collection frame 3, and the water storage tank 10 is connected to the collection frame 3 in sequence through the siphon structure 7 and the filter box 8; the sprinkler device is used to spray the water stored in the water storage tank 10 onto the top of the roof 2 to cool the roof 2.
[0020] In this invention, when rainwater falls on the roof surface, it flows into the collection frames 3 on both sides along the slope of the roof. The interception net 4 above the collection frame 3 performs preliminary filtration of the rainwater, intercepting debris such as leaves and large particles. The filtered rainwater flows from the filter box 8 into the water storage tank 10 for storage. Subsequently, when the ambient temperature is high and the roof temperature exceeds the standard, the rainwater in the water storage tank 10 is evenly sprayed onto the roof surface to reduce the roof surface temperature by utilizing the evaporative heat absorption effect, thereby achieving building energy conservation.
[0021] Based on the above technical solutions, such as Figure 1 , Figure 2 , Figure 4 , Figure 5As shown, the siphon structure 7 includes a lower drain pipe 71, a top cover 73, and multiple grid plates 74. The base 72 at the top of the lower drain pipe 71 extends into the collection frame 3 from the bottom of the collection frame 3. The top cover 73 is located above the base 72. The grid plates 74 are distributed circumferentially along the axis of the lower drain pipe 71. The bottom of the grid plates 74 is inserted into the positioning groove 721 in the base 72 through the insertion plate 741. The upper part of the grid plates 74 is inserted into the top cover 73. The bottom of the lower drain pipe 71 is connected to the water storage tank 10. The grid plates 74 in the above structure also have a certain interception function to intercept larger impurities. At the same time, the multiple grid plates 74 distributed in a ring on the outside of the top cover 73 can achieve air-water separation, thereby eliminating eddies by blocking air from entering the siphon mechanism and ensuring that rainwater is discharged quickly in a full-pipe flow state, reducing the roof load.
[0022] Based on the above technical solutions, such as Figure 4 , Figure 5 As shown, in this invention, a filter cylinder 76 (the upper part of the filter cylinder 76 sits on the support ring 722) can also be provided in the base 72 for secondary filtration of rainwater, such as sharp debris formed by the peeling of the coating paint on the surface of steel materials. Under the above structure, the filter cylinder 76, the interception net 4, and the grid plate 74 form a multi-layer filtration and interception system. It is easy to understand that in order to achieve tiered filtration, the pore size of the filter cylinder 76 is smaller than the pore size of the filter net 4.
[0023] Based on the above technical solution, to facilitate the replacement of filter cartridge 76, such as Figures 4 to 6As shown, the aforementioned siphon structure 7 also includes a fastener 75 for further fixing the top cover 73. The fastener 75 includes a pressing plate 751, a positioning rod 752, a positioning torsion spring 753, a shaft 754, a positioning tube 755, and a positioning spring 756. The positioning rod 752 is mounted on the pressing plate 751, the bottom of the shaft 754 passes through the positioning tube 755, the positioning spring 756 is located in the positioning tube 755, and both ends of the positioning spring 756 are mounted in the shaft 754 and the positioning tube 755. The upper part of the shaft 754 is mounted on the pressing plate 751 through the positioning torsion spring 753, and the positioning tube 755 is mounted on the base 72. In the above structure, the positioning rod 752 can abut against the top cover 73 to prevent rainwater from washing away the lower grille plate 74 and causing it to detach accidentally. When the filter cartridge 76 needs to be replaced, first rotate the pressing plate 751 outward to avoid affecting the installation of the top cover 73. Align the top cover 73 with the insertion plate 741 of the grid plate 74 and lower it into the positioning groove 721 of the base 72. Then pull the pressing plate 751 upward. At this time, the shaft 754 moves inward in the positioning tube 755 and applies torsional elastic force with the torsion spring 753, turning the pressing plate 751 back to the upper surface of the top cover 73. Then release the pressing plate 751. The return of the spring 756 causes the shaft 754 to automatically descend and applies downward elastic force to the pressing plate 751. At this time, the pressing plate 751 tightly presses against the edge of the top cover 73, generating a continuous and stable clamping force on the top cover 73. This firmly fixes the top cover, grid plate and internal filter cartridge 76 to the base 72, ensuring sealing and overall structural stability, and resisting rain impact and vibration.
[0024] Based on the above technical solution, in order to avoid clogging of the filter cartridge 76, such as Figure 1 , Figure 2 As shown, the above-mentioned building steel structure also includes a turbidity sensor 6, a drain pipe 12, and a solenoid valve 11. The top of the drain pipe 12 extends into the collection frame 3 from the bottom of the collection frame 3. The solenoid valve 11 is installed in the drain pipe 12. The turbidity sensor 6 is installed in the collection frame 3 through the support frame 5. The solenoid valve 11 is electrically connected to the turbidity sensor 6. A solenoid valve 29 is installed between the water storage tank 10 and the collection frame 3. Under the above structure, when the turbidity sensor 6 detects that the rainwater is relatively turbid at the beginning of the rain, the solenoid valve 11 opens, and the turbid rainwater is directly discharged through the drain pipe 12. When the turbidity of the rainwater decreases, the solenoid valve 11 closes, and the solenoid valve 29 opens. The rainwater is then treated by the rainwater collection device and stored for use.
[0025] Based on the above technical solutions, such as Figure 1 , Figure 3As shown, the building steel structure provided by the present invention also includes a swing motor 32 and a baffle 31. The swing motor 32 is installed inside the collection frame 3, and the baffle 31 is installed on the drive shaft of the swing motor 32 through a connecting rod. Under the above structure, when the water volume is large and the flow rate is fast, the rainwater flows directly down the inclined intercepting net 4, causing the rainwater to enter the collection frame 3 without being filtered. The swing motor 32 rotates and causes the baffle 31 to abut against the intercepting net 4, thereby forcing the rainwater to be filtered before entering the collection frame 3, thus avoiding subsequent clogging of the rainwater collection device, etc.
[0026] Based on the above technical solutions, such as Figure 1 As shown, the spraying device includes a lift pump 13, a lift pipe 14, and a spray pipe 15. The spray pipe 15 extends along the direction of the roof 2, and one end of the spray pipe 15 is connected to the water storage tank 10 through the lift pipe 14. The lift pump 13 is installed on the lift pipe 14. Under the above structure, the stored water is lifted by the lift pump 13 and sprayed out through the spray pipe 15 to reduce the temperature of the roof 2. Furthermore, in order to accurately meet the cooling needs of the corresponding position on the roof 2, one end of the spray pipe 15 can be rotatably sealed on the lift pipe 14, and the spray pipe 15 can be installed on the rotary servo motor. The rotary servo motor drives the spray pipe 15 to rotate, and makes the spray holes on it face the corresponding position, and then spray the stored water to cool it down.
[0027] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.
Claims
1. A building steel structure with a rainwater collection and filtration structure, characterized in that, The system includes a steel frame, a roof, a rainwater collection device, and a sprinkler system. The rainwater collection device, used to collect, filter, and store rainwater, includes a collection frame, a net, a siphon structure, a filter box, and a water storage tank. The collection frame is installed on the roof along the bottom edge of the roof, the net is installed inside the collection frame, and the water storage tank is connected to the collection frame via the siphon structure and the filter box. The sprinkler system sprays the water stored in the water storage tank onto the top of the roof to cool it down.
2. The building steel structure with rainwater collection and filtration structure according to claim 1, characterized in that, The siphon structure includes a lower pipe, a top cover, and multiple grid plates; the base of the top of the lower pipe extends into the collection frame from the bottom of the collection frame, the top cover is located above the base, the grid plates are distributed circumferentially at intervals along the axis of the lower pipe, the bottom of the grid plate is inserted into the lower pipe, the upper part of the grid plate is inserted into the top cover, and the bottom of the lower pipe is connected to the water storage tank.
3. The building steel structure with rainwater collection and filtration structure according to claim 2, characterized in that, The base is equipped with a filter cylinder for secondary filtration of rainwater.
4. The building steel structure with rainwater collection and filtration structure according to claim 3, characterized in that, The pore diameter on the filter cylinder is smaller than the pore diameter on the interceptor mesh.
5. The building steel structure with rainwater collection and filtration structure according to claim 2 or 3, characterized in that, The siphon structure also includes fasteners for further securing the top cover. The fasteners include a pressing plate, a positioning rod, a positioning torsion spring, a shaft, a positioning tube, and a positioning spring. The positioning rod is mounted on the pressing plate, the bottom of the shaft passes through the positioning tube, the positioning spring is located in the positioning tube, and both ends of the positioning spring are mounted on the shaft and the positioning tube. The upper part of the shaft is mounted on the pressing plate via the positioning torsion spring, and the positioning tube is mounted on the base.
6. The building steel structure with rainwater collection and filtration structure according to claim 2 or 3, characterized in that, The building steel structure also includes a turbidity sensor, a drain pipe, and a solenoid valve. The top of the drain pipe extends into the collection frame from the bottom. The solenoid valve is installed in the drain pipe. The turbidity sensor is installed in the collection frame. The solenoid valve is electrically connected to the turbidity sensor. A solenoid valve is installed between the water storage tank and the collection frame.
7. The building steel structure with rainwater collection and filtration structure according to claim 6, characterized in that, The turbidity sensor is located below the interception net.
8. The building steel structure with rainwater harvesting and filtering structure according to claim 2 or 3, characterized in that, The building steel structure also includes a swing motor and a baffle. The swing motor is installed inside the collection frame, and the baffle is installed on the drive shaft of the swing motor via a connecting rod.
9. The building steel structure with rainwater collection and filtration structure according to claim 2 or 3, characterized in that, The sprinkler system includes a lift pump, a lift pipe, and a sprinkler pipe. The sprinkler pipe extends along the roof direction, and one end of the sprinkler pipe is connected to the water storage tank through the lift pipe. The lift pump is installed on the lift pipe.
10. The building steel structure with rainwater collection and filtration structure according to claim 9, characterized in that, One end of the spray pipe is rotatably sealed to the lifting pipe, and the spray pipe is mounted on the rotating servo motor.