Sponge city rainwater collection system

Abstract

The invention discloses a sponge city rainwater collection system which comprises a controller, a panel, a bottom shell, a first drainage pipe, a second drainage pipe, a water storage tank, a sewage collection tank, three layers of filtering devices and three sets of overturning assemblys.According to the sponge city rainwater collection system, through the three layers of gradient filtering structures, the mesh size is gradually reduced from top to bottom, and the filtering area is enlarged; graded interception of large garbage, medium sundries and small particles can be achieved in the rainwater flowing process, the manual maintenance frequency can be reduced, the design of an automatic overturning filtering assembly and a hoisting type garbage collecting barrel is adopted, when it is detected that the garbage amount of a filter screen reaches a threshold value, a filtering frame of the corresponding layer can be automatically triggered to overturn and dump garbage, and the filtering efficiency is improved. And meanwhile, the design of maintaining direct connection of the wellhead and the garbage collecting barrel does not need additional lateral operation space, garbage clearing is more centralized and efficient, a filter screen self-cleaning structure and a dynamic monitoring mechanism are combined, residual impurities on the surface of a filter screen are flushed through rainwater circulation, and the problem of filtering failure caused by mesh blockage is effectively prevented.

Description

Technical Field

[0001] The present invention belongs to the technical field of sponge cities and relates to a rainwater collection system for sponge cities. Background Art

[0002] A sponge city is a concept of urban stormwater management, which means that a city can be like a sponge and has good "elasticity" in adapting to environmental changes and coping with natural disasters brought by rainwater. It requires the city to absorb, store, infiltrate, and purify rainwater when it rains, and release and utilize the stored water when needed. Generally, a sponge city can use a reservoir to store rainwater, which can irrigate vegetation when needed. At this time, the structure requirements for the drainage outlet are relatively high, and it has a strong ability to identify and treat sewage. The construction of a sponge city is of great significance to the urban ecological environment.

[0003] In the existing patent CN117145018A, an ecological road drainage device based on a sponge city is disclosed, including an outer box body, an inner box body, a drainage ditch cover plate, etc.; an inner box body is fixedly connected inside the outer box body, and the upper surface of the inner box body is flush with the upper surface of the outer box body; two symmetrically distributed drainage outlets are arranged at the lower part of the inner box body; a drainage ditch cover plate is arranged at the upper part of the inner box body. The water flow in the drainage cavity slowly overflows until it overflows the drainage ditch cover plate, so that the large garbage on the drainage ditch cover plate floats upward, enabling the sewage and garbage to enter the sewage discharge cavity and be discharged through the drainage outlet; thus, the problem that when most of the through holes are blocked, the water accumulation in this area will become more and more, resulting in the loss of the drainage capacity of the drainage ditch cover plate can be solved.

[0004] In the above structure, the anti-blocking function can be achieved, but the sewage is not separated and treated, and it is difficult to separate the garbage, such as large garbage like plastic bags. As a result, the crushed garbage may enter the reservoir through the pipeline, which is not conducive to creating a good water environment ecology in the reservoir, is not conducive to the reuse of the water in the reservoir for irrigating vegetation, and the garbage cannot be centrally collected, requiring secondary treatment of the garbage, increasing the labor cost, wasting time, and it is difficult to meet the requirements of a sponge city.

[0005] In the existing patent CN117145018A, an ecological road drainage device based on a sponge city is disclosed, including an outer box body, an inner box body, a drainage ditch cover plate, etc.; an inner box body is fixedly connected inside the outer box body, and the upper surface of the inner box body is flush with the upper surface of the outer box body; two symmetrically distributed drainage outlets are arranged at the lower part of the inner box body; a drainage ditch cover plate is arranged at the upper part of the inner box body. The water flow in the drainage cavity slowly overflows until it overflows the drainage ditch cover plate, so that the large garbage on the drainage ditch cover plate floats upward, enabling the sewage and garbage to enter the sewage discharge cavity and be discharged through the drainage outlet; thus, the problem that when most of the through holes are blocked, the water accumulation in this area will become more and more, resulting in the loss of the drainage capacity of the drainage ditch cover plate can be solved.

[0006] In the above structure, the function of preventing blockage can be achieved, but the sewage is not separated and treated, and it is difficult to separate the garbage, such as large garbage like plastic bags. As a result, the crushed garbage may enter the reservoir through the pipeline, which is not conducive to creating a good water environment ecosystem in the reservoir, is not conducive to the reuse of the water in the reservoir for irrigating vegetation, and the garbage cannot be collected centrally. Secondary treatment of the garbage is required, which increases the labor cost, wastes time, and is difficult to meet the requirements of a sponge city.

[0007] For this reason, a publicly known technology discloses a sponge city road ecological drainage system (Chinese Patent Publication No. CN119195312B), which includes an annular support frame. A fan-shaped drainage well is arranged on the annular support frame, and a manhole cover is arranged on the drainage well. The drainage well is communicated with a reservoir through a pipeline and a water storage ditch; a rotating mechanism is arranged on the drainage well, and a plurality of filtering components penetrating through the drainage well are arranged at the output end of the rotating mechanism, and the rotating mechanism drives the filtering components to rotate. This publicly known technology claims that it can separate and treat rainwater and garbage, effectively separate the garbage, so that the rainwater is purified and stored in the reservoir, which is conducive to creating a good water environment ecosystem in the reservoir, is conducive to the reuse of the water in the reservoir, the garbage can be automatically collected and treated centrally, reducing the labor cost of garbage treatment in the later stage. It can not only purify the rainwater, but also treat the odor of the garbage, improving the environmental quality and enabling the system to meet the drainage requirements of a sponge city.

[0008] However, in the above publicly known technology, only a single-layer filtering structure is used, and the intercepted garbage cannot be subdivided. Moreover, its filtering structure only relies on flipping to dump the garbage, and the mesh of the filtering structure is very easy to be blocked, resulting in the failure of filtering. In addition, its garbage recycling structure requires a preset treatment open space on the side of the rainwater collection system, otherwise the recycling box cannot pop out for recycling, resulting in overly complex construction.

[0009] Therefore, it is particularly necessary to design a sponge city rainwater collection system to solve the above problems. Summary of the Invention

[0010] In order to solve the deficiencies of the prior art, the present invention provides a sponge city rainwater collection system.

[0011] To achieve the above object, the technical solution of the present invention is: a sponge city rainwater collection system, including a controller, a panel, a bottom shell, a first drain pipe, a second drain pipe, a reservoir, a sewage collection tank, a three-layer filtering device and three groups of flipping components. The panel is fixedly connected to the upper end of the bottom shell, and the upper wall of the panel is flush with the ground. A filtering cavity communicating with the upper wall of the bottom shell is arranged inside the bottom shell. A group of rainwater collection buckets and three groups of garbage collection buckets are arranged on the inner lower wall of the filtering cavity. A group of rainwater wellheads and three groups of maintenance wellheads are arranged on the inner wall of the panel. The rainwater wellheads are vertically opposite to the rainwater collection buckets, and the three groups of maintenance wellheads are respectively vertically opposite to a group of garbage collection buckets. Rainwater manhole covers and maintenance manhole covers are respectively arranged at the openings of the rainwater wellheads and the maintenance wellheads. A rotating shaft is rotatably connected to the inner lower wall of the filtering cavity at the central position. Three groups of rotating sleeves are sequentially arranged on the outer wall of the rotating shaft in a vertical distribution. The three-layer filtering devices are respectively arranged on the outer walls of a group of rotating sleeves.

[0012] Preferably, a group of first placement cavities and three groups of second placement cavities are arranged on the inner lower wall of the filtering cavity. The rainwater collection buckets are arranged on the inner side walls of the first placement cavities, and the three groups of garbage collection buckets are respectively arranged on the inner side walls of a group of second placement cavities. The filtering device includes four rotating seats, and the four rotating seats are arranged on the outer wall of the rotating sleeve in a circumferential equidistant manner. Any three of the four rotating seats are rotatably connected to a rotating rod at the end far from the rotating sleeve. One of the four rotating seats without a rotating rod is a vacant area. The end of the rotating rod far from the rotating seat is fixedly connected to a filtering frame. A filter screen is fixedly connected to the inner side wall of the filtering frame. The end of the filtering frame far from the rotating rod is fixedly connected to a connecting rod, and the connecting rod is coaxially arranged with the rotating rod. The mesh sizes of the filter screens in the three-layer filtering devices are distributed in a gradually decreasing manner from top to bottom, and the areas of the filter screens in the three-layer filtering devices are distributed in a gradually increasing manner from top to bottom. Three groups of annular support frames are sequentially fixedly connected to the inner side wall of the filtering cavity in a vertical distribution. The flipping components are arranged between the annular support frames and the end of the connecting rod far from the filtering frame. The filtering frames in the three-layer filtering devices are respectively flipped through a group of flipping components. The garbage intercepted by the filter screens in the three-layer filtering devices are respectively collected through a group of garbage collection buckets. A visual detection structure for confirming the garbage collection amount of the filter screen is arranged on the inner side wall of the filtering cavity. An infrared detection structure for confirming the garbage storage amount in the garbage collection bucket is arranged on the lower wall of the maintenance manhole cover. A flushing structure for spraying water to wash the filter screen after the filtering frame is flipped is arranged between the rainwater collection bucket and the bottom shell. A rotation driving structure for driving the rotation of the rotating shaft is arranged between the panel and the rotating shaft. A clutch structure for facilitating the independent control of the rotation of each layer of the filtering device is arranged between the rotating shaft and the rotating sleeve. A lifting interface for facilitating lifting is arranged at the upper opening of the garbage collection bucket.

[0013] Preferably, the visual detection structure includes three mounting grooves, which are sequentially arranged on the inner wall of the filtering chamber in the up-and-down order and are all located on the side close to the first placement chamber. The three mounting grooves are respectively located above the three-layer filtering device. The inner wall of the mounting groove is fixedly connected with a camera, and a wide-angle lens is arranged at the imaging end of the camera. A water shield for preventing the camera from being immersed in water is arranged on the inner wall of the filtering chamber above the mounting groove.

[0014] Preferably, the infrared detection structure is an infrared sensor, and the infrared sensor is fixedly connected to the lower wall of the maintenance manhole cover. The maintenance manhole cover and the maintenance wellhead are locked by an electronic lock.

[0015] Preferably, the flushing structure includes a submersible pump, a first water pipe, a diverter, and three spray rings. The submersible pump is arranged on the inner lower wall of the rainwater collection barrel. A wire pipe shell is fixedly connected to the outer wall of the bottom shell. The first water pipe is fixedly connected to the outlet end of the submersible pump. One end of the first water pipe far from the submersible pump penetrates through the outer wall of the bottom shell and extends into the wire pipe shell. The diverter is fixedly connected to one end of the first water pipe extending into the wire pipe shell. There is a set of inlets and three outlets on the diverter. One end of the first water pipe extending into the wire pipe shell is fixedly connected to the inlet of the diverter. The three spray rings are all fixedly connected to the lower wall of the panel and are respectively opposite to the three maintenance wellheads up and down. The inner diameter of the spray ring is larger than the inner diameter of the maintenance wellhead. The inner diameter of the maintenance wellhead is larger than the outer diameter of the garbage collection barrel. A circular spray cavity is arranged on the inner wall of the spray ring. A plurality of spray heads are arranged on the lower wall of the spray ring. The spraying range of the plurality of spray heads covers the surface of the corresponding filter screen. The three spray rings are respectively connected to the outlets of the diverter through a set of second water pipes, and a solenoid valve is arranged on the outer wall of the second water pipe.

[0016] Preferably, the rotary drive structure includes a motor mounting seat and a drive motor. The motor mounting seat is fixedly connected to the lower wall of the panel. The drive motor is fixedly connected to the inner lower wall of the motor mounting seat. The output shaft of the drive motor penetrates through the lower wall of the motor mounting seat and is fixedly connected to the upper end of the rotating shaft through a coupling.

[0017] Preferably, the clutch structure includes three magnetic powder clutches, which are respectively arranged on the inner wall of a set of rotating sleeves. The inner walls of the three magnetic powder clutches are all fixedly connected to the outer wall of the rotating shaft. The three magnetic powder clutches are all powered by a conductive slip ring.

[0018] Preferably, the first drain pipe and the second drain pipe are fixedly connected to the outer wall of the bottom shell in the up-and-down distribution. Overflow holes communicating with the first drain pipe are arranged on the outer wall of the rainwater collection barrel and the outer wall of the bottom shell. The first drain pipe is communicated with the reservoir through a water storage ditch.

[0019] Preferably, sewage drainage channels communicating with the second drain pipes are provided on the inner lower walls of the three groups of the second placement cavities. The second drain pipes are communicated with a sewage collection pool through a sewage ditch. Multiple groups of water drainage micropores for draining water are provided on the lower wall of the garbage collection bucket, and the water drainage micropores communicate with the corresponding sewage drainage channels.

[0020] Preferably, a waterproof retaining ring for preventing the sewage of the flushing structure from entering the rainwater collection bucket is fixedly connected to the inner lower wall of the filtering cavity and at the upper opening of the first placement cavity.

[0021] By adopting the above technical solutions, the beneficial effects of the present invention are as follows: 1. The rainwater collection system for sponge city proposed by the present invention can solve the problems of multi-stage garbage separation and anti-blocking compared with the prior art. Through a three-layer gradient filtering structure, the mesh size is gradually reduced from top to bottom and the filtering area is enlarged, so that large garbage, medium-sized sundries and fine particles can be intercepted hierarchically during the rainwater flow process, which not only avoids the rapid blockage of a single-layer filter screen caused by garbage mixing, but also can accurately classify garbage of different sizes into the corresponding garbage collection buckets, preventing garbage from entering the reservoir and polluting the water body from the source.

[0022] 2. The rainwater collection system for sponge city proposed by the present invention can reduce the frequency of manual maintenance compared with the prior art. By adopting the design of an automatic flipping filter component and a liftable garbage collection bucket, when it is detected that the garbage amount on the filter screen reaches the threshold, the filter rack at the corresponding level can be automatically triggered to flip and dump the garbage. At the same time, the design of directly connecting the maintenance wellhead and the garbage collection bucket does not require additional lateral operation space, and the garbage collection bucket can be directly lifted out of the maintenance wellhead by a common lifting device on the market, making the garbage removal more centralized and efficient, and eliminating the disadvantages of complex recovery structures in the traditional technology.

[0023] 3. The rainwater collection system for sponge city proposed by the present invention improves the long-term stability of the system compared with the prior art. Combining the self-cleaning structure of the filter screen and the dynamic monitoring mechanism, the residual impurities on the surface of the filter screen are washed by rainwater circulation, effectively preventing the problem of filtration failure caused by mesh blockage. At the same time, the hierarchical independent drive control allows other levels to continue to work during the single-layer maintenance, ensuring that the rainwater collection system can still maintain the basic drainage function during the maintenance period, and avoiding the overall paralysis caused by local failures in the traditional system. Description of the Drawings

[0024] Figure 1 is the three-dimensional structural schematic diagram of the present invention; Figure 2 is the partial cross-sectional view of the connection structure of the panel and the bottom shell of the present invention; Figure 3 is the Figure 2 partial enlarged view at A in the present invention; Figure 4 is theFigure 2 Partial enlarged view at B in Figure 5 of the present invention Figure 2 Partial enlarged view at C in Figure 6 of the present invention Figure 2 Partial enlarged view at D in Figure 7 Schematic top view of the filtering device of the present invention; Figure 8 Schematic top view of the connection structure of the bottom shell, rainwater collection barrel and three groups of garbage collection barrels of the present invention; Figure 9 Schematic top view of the bottom shell of the present invention; Figure 10 Schematic bottom view of the water spraying ring of the present invention; Figure 11 Schematic bottom view of the maintenance manhole cover of the present invention.

[0025] In the figure, 1, panel; 2, bottom shell; 201, filtering chamber; 2011, first placement chamber; 2012, second placement chamber; 3, rainwater wellhead; 4, rainwater manhole cover; 5, maintenance wellhead; 6, maintenance manhole cover; 7, first drain pipe; 8, second drain pipe; 9, wire pipe shell; 10, motor mounting seat; 11, drive motor; 12, rotating shaft; 13, magnetic powder clutch; 14, rotating sleeve; 15, rotating seat; 16, rotating rod; 17, filtering rack; 18, filter screen; 19, connecting rod; 20, mounting groove; 21, water baffle; 22, camera; 23, rainwater collection barrel; 24, garbage collection barrel; 25, submersible pump; 26, first water pipe; 27, diverter; 28, second water pipe; 29, solenoid valve; 30, annular support frame; 31, water spraying ring; 32, water spraying chamber; 33, water spraying head; 34, sewage drainage channel; 35, waterproof ring; 36, infrared sensor. Detailed implementation manners

[0026] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail below through specific embodiments.

[0027] As Figures 1 to 11 shown, this embodiment provides a sponge city rainwater collection system, including a controller, a panel 1, a bottom shell 2, a first drain pipe 7, a second drain pipe 8, a reservoir, a sewage collection pool, a three-layer filtering device and three groups of flipping components. The panel 1 is fixedly connected to the upper end of the bottom shell 2 and the upper wall of the panel 1 is flush with the ground. The fixed connection between the panel 1 and the bottom shell 2 ensures that there is no protruding structure after the whole system is embedded in the ground, avoiding obstacles for pedestrians or vehicles. At the same time, the separation of rainwater and garbage is realized through the filtering chamber 201 inside the bottom shell 2; To classify and filter rainwater and separately collect garbage and purified water, a filtering cavity 201 communicating with the upper wall of the bottom shell 2 is provided inside the bottom shell 2. A set of rainwater collection buckets 23 and three sets of garbage collection buckets 24 are arranged on the inner lower wall of the filtering cavity 201. A set of first placement cavities 2011 and three sets of second placement cavities 2012 are arranged on the inner lower wall of the filtering cavity 201. The rainwater collection buckets 23 are arranged on the inner side walls of the first placement cavities 2011, and the three sets of garbage collection buckets 24 are respectively arranged on the inner side walls of a set of second placement cavities 2012. The rainwater collection buckets 23 and the three sets of garbage collection buckets 24 are evenly distributed in a circumferential manner centered on the axis of the bottom shell 2. The partition design between the first placement cavities 2011 and the second placement cavities 2012 enables the independent operation of the rainwater collection buckets 23 and the garbage collection buckets 24, avoiding mixed pollution. Each layer of the filtering device corresponds to a set of garbage collection buckets 24; To provide independent channels for rainwater introduction and maintenance operations, a set of rainwater wells 3 and three sets of maintenance wells 5 are arranged on the inner wall of the panel 1. The rainwater wells 3 are vertically opposite to the rainwater collection buckets 23, and the three sets of maintenance wells 5 are respectively vertically opposite to a set of garbage collection buckets 24. Rainwater covers 4 and maintenance covers 6 are respectively arranged at the openings of the rainwater wells 3 and the maintenance wells 5. The rainwater wells 3 are directly connected to the rainwater collection buckets 23 to ensure that rainwater quickly enters the filtering process; the maintenance wells 5 are aligned with the garbage collection buckets 24, facilitating garbage cleaning or equipment maintenance through the opening and closing of the maintenance covers 6. The electronic lock design prevents unauthorized personnel from operating; To provide independent rotation and flipping control for the three-layer filter screen, a rotating shaft 12 is rotatably connected to the inner lower wall of the filtering cavity 201 and located at the central position. Three sets of rotating sleeves 14 are sequentially arranged on the outer wall of the rotating shaft 12 in a vertical distribution. The three-layer filtering devices are respectively arranged on the outer walls of a set of rotating sleeves 14. The filtering device includes four rotating seats 15, and the four rotating seats 15 are arranged on the outer wall of the rotating sleeve 14 in a circumferential equal distribution. One end of any three of the four rotating seats 15 away from the rotating sleeve 14 is rotatably connected to a rotating rod 16. One set of the four rotating seats 15 without the rotating rod 16 is a vacant area. The end of the rotating rod 16 away from the rotating seat 15 is fixedly connected to a filter rack 17, and a filter screen 18 is fixedly connected to the inner side wall of the filter rack 17. The rotating shaft 12 drives each layer of the filtering device to rotate through the three sets of rotating sleeves 14. The vacant area reserves an avoidance space for the flipping of the filter screen 18 and the hoisting of the garbage collection buckets 24; In order to improve the interception efficiency through step-by-step filtration and achieve automatic garbage unloading, a connecting rod 19 is fixedly connected to one end of the filter rack 17 away from the rotating rod 16. The connecting rod 19 is coaxially arranged with the rotating rod 16. Three groups of annular support frames 30 are fixedly connected to the inner side wall of the filter chamber 201 in a vertical distribution. The flipping assembly is arranged between the annular support frame 30 and the end of the connecting rod 19 away from the filter rack 17. The filter racks 17 in the three-layer filtering device are respectively flipped through a set of flipping assemblies. The garbage intercepted by the filter screens 18 in the three-layer filtering device are respectively collected by a set of garbage collection bins 24. The mesh sizes of the filter screens 18 in the three-layer filtering device are distributed in a gradually decreasing manner from top to bottom, and the areas of the filter screens 18 in the three-layer filtering device are distributed in a gradually increasing manner from top to bottom; the upper large-mesh filter screen 18 intercepts coarse garbage (such as leaves and stones), the middle-layer filter screen intercepts medium particles (such as sediment), and the lower fine filter screen intercepts tiny impurities; the flipping assembly is linked with the annular support frame 30 through the connecting rod 19 to tilt the filter screen 18 to pour the garbage into the corresponding garbage collection bin 24, realizing full-automatic dredging. The flipping assembly is a commercially available structure, and the structure is completely the same, so it is not elaborated in this embodiment; In order to monitor the filter screen blockage and garbage collection status in real time and trigger automatic maintenance, a visual detection structure for confirming the garbage collection amount of the filter screen 18 is arranged on the inner side wall of the filter chamber 201. The visual detection structure includes three groups of mounting grooves 20. The three groups of mounting grooves 20 are arranged on the inner side wall of the filter chamber 201 in a vertical order and are all located on the side close to the first placement chamber 2011. The three groups of mounting grooves 20 are respectively located above the three-layer filtering device. A camera 22 is fixedly connected to the inner side wall of the mounting groove 20. A wide-angle lens is arranged at the imaging end of the camera 22. A water shield 21 for preventing the camera 22 from being immersed in water is arranged on the inner side wall of the filter chamber 201 and above the mounting groove 20; an infrared detection structure for confirming the garbage storage amount in the garbage collection bin 24 is arranged on the lower wall of the maintenance well cover 6. The infrared detection structure is an infrared sensor 36. The infrared sensor 36 is fixedly connected to the lower wall of the maintenance well cover 6. The maintenance well cover 6 and the maintenance wellhead 5 are locked by an electronic lock. The camera 22 monitors the garbage accumulation area on the surface of the filter screen 18 through the wide-angle lens. When the threshold is reached, the rotation switching action, flipping action, and flushing action are triggered; the infrared sensor 36 detects the filling height of the garbage collection bin 24 and sends an alarm prompt to clean when it is about to overflow; the water shield 21 prevents rainwater from splashing and interfering with the imaging of the camera 22, ensuring the detection accuracy; In order to automatically clean the filter screen by using the collected rainwater and reduce the frequency of manual maintenance, a flushing structure is provided between the rainwater collection barrel 23 and the bottom shell 2 for spraying water on the filter screen 18 after the filter rack 17 is turned over. The flushing structure includes a submersible pump 25, a first water pipe 26, a diverter 27, and three groups of spray rings 31. The submersible pump 25 is arranged on the inner lower wall of the rainwater collection barrel 23. A wire pipe housing 9 is fixedly connected to the outer wall of the bottom shell 2. The first water pipe 26 is fixedly connected to the outlet end of the submersible pump 25. One end of the first water pipe 26 far from the submersible pump 25 penetrates the outer wall of the bottom shell 2 and extends into the interior of the wire pipe housing 9. The diverter 27 is fixedly connected to one end of the first water pipe 26 extending into the interior of the wire pipe housing 9. The diverter 27 is provided with one group of inlets and three groups of outlets. One end of the first water pipe 26 extending into the interior of the wire pipe housing 9 is fixedly connected to the inlet of the diverter 27. The three groups of spray rings 31 are all fixedly connected to the lower wall of the panel 1 and are respectively opposite to the three groups of maintenance well openings 5 up and down. The inner diameter of the spray ring 31 is larger than the inner diameter of the maintenance well opening 5. The inner diameter of the maintenance well opening 5 is larger than the outer diameter of the garbage collection barrel 24. A circular spray cavity 32 is arranged on the inner wall of the spray ring 31. Multiple spray heads 33 are arranged on the lower wall of the spray ring 31. The spraying range of the multiple spray heads 33 covers the surface of the corresponding filter screen 18. The three groups of spray rings 31 are respectively connected to the outlets of the diverter 27 through a group of second water pipes 28. An electromagnetic valve 29 is arranged on the outer wall of the second water pipe 28. The submersible pump 25 pumps the purified water in the rainwater collection barrel 23 and distributes it to the three groups of spray rings 31 through the diverter 27; the spray heads 33 cover the surface of the filter screen 18 in a circular shape to flush the residual garbage; the design that the inner diameter of the spray ring 31 is larger than the maintenance well opening 5 ensures that the spraying range completely covers the filter screen 18, avoids cleaning blind spots, and also avoids interference when hoisting the garbage collection barrel 24. In order to realize the independent start and stop of the stratified filtration device, a rotary drive structure for driving the rotation of the rotary shaft 12 is arranged between the panel 1 and the rotary shaft 12. The rotary drive structure includes a motor mounting seat 10 and a drive motor 11. The motor mounting seat 10 is fixedly connected to the lower wall of the panel 1. The drive motor 11 is fixedly connected to the inner lower wall of the motor mounting seat 10. The extending shaft of the drive motor 11 penetrates the lower wall of the motor mounting seat 10 and is fixedly connected to the upper end of the rotary shaft 12 through a coupling. A clutch structure for facilitating the separate control of the rotation of each layer of the filtration device is arranged between the rotary shaft 12 and the rotary sleeve 14. The clutch structure includes three groups of magnetic powder clutches 13. The three groups of magnetic powder clutches 13 are respectively arranged on the inner side wall of a rotary sleeve 14. The inner side walls of the three groups of magnetic powder clutches 13 are all fixedly connected to the outer wall of the rotary shaft 12. The three groups of magnetic powder clutches 13 are all powered by a conductive slip ring; the drive motor 11 drives all the filtration devices to rotate through the rotary shaft 12. When a certain layer of the filter screen 18 needs to be maintained separately, the linkage between the rotary sleeve 14 of this layer and the rotary shaft 12 is disconnected through the magnetic powder clutch 13 to avoid overall shutdown; the power supply by the conductive slip ring ensures continuous and stable power during rotation. When the upper layer of the filtration device needs to be turned over to dump garbage, the controller is used to control the empty area of the lower layer of the filtration device to be within the garbage dumping range to avoid interference. To simplify the replacement process of the garbage collection bin 24 and improve the maintenance efficiency, a lifting interface for convenient lifting is provided at the upper mouth of the garbage collection bin 24. By connecting common external devices in the market (such as a crane or a manual lifting tool) through the lifting interface, the garbage collection bin 24 can be directly taken out from the maintenance wellhead 5 for cleaning without disassembling other components, greatly shortening the maintenance time; To separate the rainwater and sewage discharge paths and prevent cross - contamination, the first drain pipe 7 and the second drain pipe 8 are fixedly connected to the outer wall of the bottom shell 2 in a vertical distribution sequence. Overflow holes communicating with the first drain pipe 7 are provided on the outer walls of the rainwater collection barrel 23 and the bottom shell 2. The first drain pipe 7 is connected to the water storage tank through a water storage ditch. Sewage drainage channels 34 communicating with the second drain pipe 8 are provided on the inner lower walls of the three second placement cavities 2012. The second drain pipe 8 is connected to the sewage collection tank through a sewage ditch. Multiple water drainage micropores for draining water are provided on the lower wall of the garbage collection bin 24, and the water drainage micropores communicate with the corresponding sewage drainage channels 34; A waterproof retaining ring 35 for preventing the sewage of the flushing structure from entering the rainwater collection barrel 23 is fixedly connected to the inner lower wall of the filtering cavity 201 and at the upper mouth of the first placement cavity 2011. The first drain pipe 7 conveys the filtered rainwater to the water storage tank for reuse; The second drain pipe 8 discharges the sewage drained from the garbage collection bin 24 through the sewage drainage channels 34 to avoid putrid stagnant water; The waterproof retaining ring 35 blocks the backflow of the flushing sewage to the rainwater collection barrel 23 to ensure the purity of the purified water.

[0028] Working principle: The fixed connection between the panel 1 and the bottom shell 2 ensures that there is no protruding structure after the whole system is embedded in the ground, avoiding obstacles for pedestrians or vehicles. At the same time, the separation of rainwater and garbage is realized through the internal filter chamber 201 of the bottom shell 2; the partition design of the first placement chamber 2011 and the second placement chamber 2012 enables the rainwater collection bucket 23 and the garbage collection bucket 24 to operate independently, avoiding mixed pollution. Each layer of the filter device corresponds to a group of garbage collection buckets 24; the rainwater wellhead 3 is directly connected to the rainwater collection bucket 23 to ensure that rainwater quickly enters the filtration process; the maintenance wellhead 5 is aligned with the garbage collection bucket 24, facilitating garbage cleaning or equipment maintenance through the opening and closing of the maintenance manhole cover 6. The electronic lock design prevents unauthorized personnel from operating; the rotating shaft 12 drives each layer of the filter device to rotate through three sets of rotating sleeves 14, and the vacant area reserves an avoidance space for the flipping of the filter screen 18 and the hoisting of the garbage collection bucket 24; the upper-layer large-mesh filter screen 18 intercepts coarse garbage (such as leaves and stones), the middle-layer filter screen intercepts medium particles (such as sediment), and the lower-layer fine filter screen intercepts tiny impurities; the flipping assembly is linked with the annular support frame 30 through the connecting rod 19 to tilt the filter screen 18 to pour the garbage into the corresponding garbage collection bucket 24, realizing fully automatic silt cleaning. The flipping assembly is a commercially available structure, and its principle and structure are exactly the same, so it is not elaborated in this embodiment; the camera 22 monitors the garbage accumulation area on the surface of the filter screen 18 through a wide-angle lens. When the threshold is reached, it triggers the rotation switching action, the flipping action, and the flushing action; the infrared sensor 36 detects the filling height of the garbage collection bucket 24 and sends an alarm prompt for cleaning when it is about to overflow; the water baffle 21 prevents rainwater splashing from interfering with the imaging of the camera 22 and ensures the detection accuracy; the submersible pump 25 extracts the purified water in the rainwater collection bucket 23 and distributes it to three groups of spray rings 31 through the diverter 27; the spray heads 33 cover the surface of the filter screen 18 in a ring shape to flush the residual garbage; the design that the inner diameter of the spray ring 31 is larger than the maintenance wellhead 5 ensures that the spraying range fully covers the filter screen 18, avoiding cleaning blind spots and also avoiding interference when hoisting the garbage collection bucket 24; the drive motor 11 drives all the filter devices to rotate through the rotating shaft 12. When a certain layer of the filter screen 18 needs to be maintained separately, the linkage between the rotating sleeve 14 of this layer and the rotating shaft 12 is disconnected through the magnetic powder clutch 13 to avoid overall shutdown; the conductive slip ring supplies power to ensure continuous and stable power during the rotation process. When the upper-layer filter device needs to be flipped and tilted to dump garbage, the controller controls the vacant area of the lower-layer filter device to be within the garbage dumping range to avoid interference; the upper part of the garbage collection bucket 24 is provided with a lifting interface for convenient hoisting. By connecting common external equipment on the market (such as a crane or a manual lifting tool) through the lifting interface, the garbage collection bucket 24 can be directly taken out from the maintenance wellhead 5 for cleaning without disassembling other components, greatly shortening the maintenance time; the first drain pipe 7 conveys the filtered rainwater to the reservoir for reuse; the second drain pipe 8 discharges the sewage drained from the garbage collection bucket 24 through the sewage drainage channel 34 to avoid putrid stagnant water; the waterproof retaining ring 35 blocks the backflow of the flushing sewage into the rainwater collection bucket 23 to ensure the purity of the purified water.

[0029] The above components are all common standard parts or parts known to those skilled in the art, and their structures and principles can all be learned by those skilled in the art through technical manuals or by conventional experimental methods.

[0030] The above embodiments and diagrams do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A sponge city rainwater collection system, characterized by: The invention comprises a controller, a panel (1), a bottom shell (2), a first drainage pipe (7), a second drainage pipe (8), a water storage tank, a sewage collection tank, a three-layer filtering device and three groups of flipping components, wherein the panel (1) is fixedly connected to the upper end of the bottom shell (2) and the upper wall of the panel (1) is flush with the ground, a filtering cavity (201) penetrating the upper wall of the bottom shell (2) is arranged inside the bottom shell (2), a group of rainwater collection barrels (23) and three groups of garbage collection barrels (24) are arranged on the inner lower wall of the filtering cavity (201), and a group of rainwater wellheads (3) and Three groups of maintenance well openings (5), the rainwater well openings (3) being vertically opposite to the rainwater collection barrel (23), the three groups of maintenance well openings (5) being vertically opposite to a group of garbage collection barrels (24), the rainwater well openings (3) and the maintenance well openings (5) being respectively provided with rainwater well covers (4) and maintenance well covers (6), the inner lower wall of the filter chamber (201) being rotatably connected to a rotating shaft (12) at a central position, the outer wall of the rotating shaft (12) being provided with three groups of rotating sleeves (14) in sequence in an upper and lower distribution, and the three layers of the filtering devices being respectively provided on the outer wall of a group of rotating sleeves (14).

2. A sponge city rainwater collection system according to claim 1, characterized in that: The filter chamber (201) is provided with a first placement chamber (2011) and three second placement chambers (2012) on the inner lower wall. The rainwater collection barrel (23) is provided on the inner wall of the first placement chamber (2011). The three garbage collection barrels (24) are provided on the inner wall of the second placement chamber (2012). The rainwater collection barrel (23) and the three garbage collection barrels (24) are distributed in equal parts around the axis of the bottom shell (2). The filter device comprises four groups of rotating seats (15). The four groups of rotating seats (15) are provided on the outer wall of the rotating sleeve (14) in equal parts around the circumference. Any three groups of rotating seats (15) are rotatably connected to one end away from the rotating sleeve (14) with a rotating rod (16); one of the four groups of rotating seats (15) not provided with a rotating rod (16) is a vacant area; one end of the rotating rod (16) away from the rotating seat (15) is fixedly connected to a filter frame (17); an inner side wall of the filter frame (17) is fixedly connected to a filter screen (18); one end of the filter frame (17) away from the rotating rod (16) is fixedly connected to a connecting rod (19); the connecting rod (19) is coaxially arranged with the rotating rod (16); the mesh sizes of the filter screens (18) in the three layers of the filtering device are distributed in a step-by-step manner from top to bottom; and the three layers of the filtering device are fixedly connected to one end of the rotating seat (15) with a filter screen (18) fixedly connected to the inner side wall of the filter frame (17); and the filter screens (18) in the three layers of the filtering device are fixedly connected to one end of the rotating seat (15). The filter screens (18) in the three layers of the filter device are distributed in a gradually increasing size from top to bottom, the inner side wall of the filter cavity (201) is distributed up and down and is fixedly connected with three groups of annular support frames (30) in sequence, the flip assembly is arranged at the end of the annular support frame (30) and the connecting rod (19) away from the filter frame (17), the filter frames (17) in the three layers of the filter device are flipped by a group of flip assemblies respectively, the garbage intercepted by the filter screens (18) in the three layers of the filter device are collected by a group of garbage collection buckets (24), and the inner side wall of the filter cavity (201) is provided with a device for confirming the amount of garbage collected by the filter screen (18). A visual detection structure is provided, the lower wall of the maintenance well cover (6) is provided with an infrared detection structure for confirming the amount of garbage stored in the garbage collection barrel (24), a flushing structure for spraying water on the filter screen (18) after the filter frame (17) is turned over is provided between the rainwater collection barrel (23) and the bottom shell (2), a rotation drive structure for driving the rotation shaft (12) to rotate is provided between the panel (1) and the rotating shaft (12), a clutch structure for facilitating the individual control of the rotation of each layer of the filter device is provided between the rotating shaft (12) and the rotating sleeve (14), and a hoisting interface for facilitating hoisting is provided at the upper opening of the garbage collection barrel (24).

3. A sponge city rainwater collection system according to claim 2, characterized in that: The visual detection structure comprises three groups of mounting grooves (20), the three groups of mounting grooves (20) being arranged in sequence on the inner wall of the filter cavity (201) in an up-down order and all being located on a side close to the first placement cavity (2011), the three groups of mounting grooves (20) being located above the three-layer filtering device, respectively, a camera (22) being fixedly connected to the inner wall of the mounting groove (20), a wide-angle lens being arranged at the camera end of the camera (22), and a water shield (21) for preventing the camera (22) from being immersed in water being arranged on the inner wall of the filter cavity (201) and located above the mounting groove (20).

4. A sponge city rainwater collection system according to claim 3, characterized in that: The infrared detection structure is an infrared sensor (36), and the infrared sensor (36) is fixedly connected to the lower wall of the maintenance well cover (6). The maintenance well cover (6) and the maintenance well opening (5) are locked by an electronic lock.

5. A sponge city rainwater collection system according to claim 4, characterized in that: The flushing structure comprises a submersible pump (25), a first water pipe (26), a flow diverter (27), and three groups of water spray rings (31); the submersible pump (25) is arranged on the lower wall of the inner side of the rainwater collection barrel (23); the outer wall of the bottom shell (2) is fixedly connected to the wire tube shell (9); the first water pipe (26) is fixedly connected to the outlet end of the submersible pump (25); one end of the first water pipe (26) away from the submersible pump (25) passes through the outer wall of the bottom shell (2) and extends into the wire tube shell (9); the flow diverter (27) is fixedly connected to one end of the first water pipe (26) extending into the wire tube shell (9); the flow diverter (27) is provided with one group of inlets and three groups of outlets; one end of the first water pipe (26) extending into the wire tube shell (9) is connected to the outlet end of the first water pipe (26); The inlet of the flow divider (27) is fixedly connected, and the three groups of water spray rings (31) are all fixedly connected to the lower wall of the panel (1) and are respectively located above and below the three groups of maintenance wellheads (5). The inner diameter of the water spray ring (31) is larger than the inner diameter of the maintenance wellhead (5), and the inner diameter of the maintenance wellhead (5) is larger than the outer diameter of the garbage collection barrel (24). The inner wall of the water spray ring (31) is provided with an annular water spray cavity (32). The lower wall of the water spray ring (31) is provided with multiple groups of water spray heads (33). The water spray range of the multiple groups of water spray heads (33) covers the surface of the corresponding filter screen (18). The three groups of water spray rings (31) are respectively connected to the outlet of the flow divider (27) through a group of second water pipes (28), and the outer wall of the second water pipe (28) is provided with a solenoid valve (29).

6. A sponge city rainwater collection system according to claim 5, characterized in that: The rotary drive structure comprises a motor mounting seat (10) and a drive motor (11); the motor mounting seat (10) is fixedly connected to the lower wall of the panel (1); the drive motor (11) is fixedly connected to the inner lower wall of the motor mounting seat (10); a shaft of the drive motor (11) extends through the lower wall of the motor mounting seat (10) and is fixedly connected to the upper end of the rotating shaft (12) via a coupling.

7. A sponge city rainwater collection system according to claim 6, characterized in that: The clutch structure comprises three groups of magnetic powder clutches (13), the three groups of magnetic powder clutches (13) being respectively arranged on the inner side wall of a group of rotating sleeves (14), the inner side walls of the three groups of magnetic powder clutches (13) being fixedly connected to the outer wall of the rotating shaft (12), and the three groups of magnetic powder clutches (13) being powered by conductive slip rings.

8. A sponge city rainwater collection system according to claim 7, characterized in that: The first drainage pipe (7) and the second drainage pipe (8) are fixedly connected to the outer wall of the bottom shell (2) in an upper and lower distribution, and the outer wall of the rainwater collection barrel (23) and the outer wall of the bottom shell (2) are both provided with overflow holes that penetrate the first drainage pipe (7), and the first drainage pipe (7) is connected to the water storage tank through the water storage ditch.

9. A sponge city rainwater collection system according to claim 8, characterized in that: The three groups of second placement chambers (2012) are each provided with a sewage drainage channel (34) on the inner lower wall thereof, which is connected to the second drainage pipe (8); the second drainage pipe (8) is connected to the sewage collection pool via a sewage ditch; the garbage collection barrel (24) is provided with a plurality of groups of drainage micropores on the lower wall thereof for drainage; the drainage micropores are connected to the corresponding sewage drainage channels (34).

10. A sponge city rainwater collection system according to claim 9, characterized in that: A waterproof retaining ring (35) is fixedly connected to the inner lower wall of the filter cavity (201) and located at the upper opening of the first placement cavity (211) and is used to prevent sewage from the flushing structure from entering the rainwater collection barrel (23).

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