Rainwater collecting device based on sponge city and collecting method thereof

Abstract

The invention discloses a rainwater collection device based on a sponge city and a collection method thereof, and particularly relates to the technical field of rainwater collection, the rainwater collection device comprises a reservoir and a precipitation cylinder, the reservoir is internally provided with an inspection well and a recycling well, the bottom of the precipitation cylinder is provided with a first pollution discharge hole, and the first pollution discharge hole is internally provided with a first sealing element; the first sealing piece can change the sealing state according to the amount of accumulated water in the precipitation barrel, a stirring piece is arranged at the inner bottom of the precipitation barrel, and the stirring piece can stir sediment at the first pollution discharge hole when the first pollution discharge hole is opened; the sewage draining exit is opened in advance according to the precipitation amount and the water storage amount in the water storage pool, meanwhile, accumulated water in the water storage pool is kept at a certain water level, the water storage pool has a certain buffer space, and therefore it is guaranteed that when the precipitation amount is large due to rainstorm or long-time raining, the water storage pool can not be blocked; the rainwater collecting device can quickly discharge flood to prevent urban waterlogging.

Description

Technical Field

[0001] The present invention relates to the technical field of rainwater collection, and more specifically, to a rainwater collection device and a rainwater collection method based on a sponge city. Background Art

[0002] In the context of sponge cities, urban construction aims to imitate the absorption, storage and slow release of rainwater by natural ecosystems. It realizes the effective collection, storage and purification of rainwater, and rationally utilizes rainwater resources for landscape irrigation, road cleaning, building flushing and other aspects, thereby reducing the risk of urban waterlogging, reducing the pollution of rainwater runoff to water bodies, promoting the balance of urban hydrological cycles, and enhancing urban ecological resilience and sustainable development capabilities.

[0003] However, the existing rainwater collection device cannot discharge flood water in advance according to the amount of precipitation and the size of the buffer space inside the reservoir when it rains, which leads to urban waterlogging. At the same time, when rainwater flows into the rainwater collection device through the surface, there is a large amount of sediment that can easily cause the drainage holes to be blocked. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a rainwater collection device and a collection method thereof based on a sponge city to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a rainwater collection device based on a sponge city and a rainwater collection method thereof, comprising: a water storage tank and a sedimentation cylinder, wherein an inspection well and a reuse well are arranged inside the water storage tank, a first drain hole is opened at the bottom of the sedimentation cylinder, a first seal is arranged in the first drain hole, and the first seal can change the sealing state of the first drain hole according to the amount of accumulated water inside the sedimentation cylinder, a stirring member is arranged at the inner bottom of the sedimentation cylinder, and the stirring member can stir the sediment at the first drain hole when the first drain hole is opened; a second water inlet pipe is arranged on the side wall of the sedimentation cylinder, the second water inlet pipe is connected with the sedimentation cylinder, a third seal is arranged inside one end of the second water inlet pipe close to the sedimentation cylinder, and a rain gauge is arranged on the top of the sedimentation cylinder, and the rain gauge can change the sealing state of the first drain hole and the second water inlet pipe according to the amount of water inlet.

[0006] Preferably, a second drain hole is provided at the bottom of the water reservoir, and a second sealing member is provided in the second drain hole. When the amount of water stored in the water reservoir is large, the second sealing member can change the sealing state of the second drain hole according to the amount of water accumulated in the water reservoir.

[0007] Preferably, a first water inlet pipe is arranged parallel to the second water inlet pipe, one end of the first water inlet pipe is connected to the sedimentation drum, one end of the first water inlet pipe away from the sedimentation drum is fixedly connected to a rainwater purifier, the first water inlet pipe and the second water inlet pipe are respectively connected to the rainwater purifier, and the rainwater purifier is connected to the water tank through a pipe.

[0008] Preferably, the outer wall of the first drain hole is fixedly connected to the first gas cylinder, the inner wall of the first gas cylinder is slidably connected to the first piston plate, one end of the first piston plate is fixedly connected to the first piston rod, the first piston rod extends out of the first gas cylinder at one end away from the first piston plate, the first piston rod is fixedly connected to a connecting piece at one end away from the first piston plate, the side wall of the connecting piece is fixedly connected to a connecting rod, the connecting rod is fixedly connected to the first sealing piece, the connecting rod passes through the first sealing piece, a first elastic piece is arranged in the first gas cylinder, one end of the first elastic piece is fixedly connected to one end of the first piston plate close to the first piston rod, the other end of the first elastic piece is fixedly connected to the inner bottom wall of the first drain hole, and there are multiple first gas cylinders and they are distributed circumferentially along the first drain hole.

[0009] Preferably, a slide groove is provided at the bottom of the sedimentation cylinder, the agitator is rotatably connected to the slide groove, one end of the agitator is fixedly connected to a support rod, the side wall of the support rod is fixedly connected to a rotating drum, the inner wall of the rotating drum is rotatably connected to a connecting rod, the end of the connecting rod away from the connecting member is fixedly connected to a ball, a spiral slide groove is provided on the inner wall of the rotating drum, and the ball is slidably connected to the spiral slide groove provided on the inner wall of the rotating drum.

[0010] Preferably, the inner side wall of the water reservoir is fixedly connected to a second air cylinder, the interior of the second air cylinder is slidably connected to a second piston plate, a second elastic member is arranged in the second air cylinder, one end of the second elastic member is fixedly connected to the second piston plate, the other end of the second elastic member is fixedly connected to the inner top wall of the second air cylinder, a pipe communicating with the water reservoir is provided at the bottom of the second air cylinder, a third air cylinder is fixedly connected to the outer bottom surface of the water reservoir, a third air cylinder is slidably connected to a third piston plate, one end of the third piston plate is fixedly connected to a third piston rod, an end of the third piston rod away from the third piston plate is fixedly connected to a first rack, the first rack is meshed with a first gear, a first rotating shaft is fixedly connected to the interior of the second sealing member, the rotating shaft is fixedly connected to the gear, and a connecting through hole is provided at the top of the second air cylinder and the top of the third air cylinder.

[0011] Preferably, a manhole cover is fixedly connected to the top of the sedimentation cylinder, a fourth air cylinder is fixedly connected to one end of the manhole cover close to the sedimentation cylinder, a fourth piston plate is fixedly connected to the inside of the fourth air cylinder, one end of the fourth piston plate is fixedly connected to a fourth piston rod, an end of the fourth piston rod extends out of the fourth air cylinder away from the fourth piston plate and is fixedly connected to the rain gauge, a spring is sleeved on the outer wall of the fourth piston rod, one end of the spring is fixedly connected to one end of the fourth piston plate close to the fourth piston rod, the other end of the spring is fixedly connected to the inner bottom wall of the fourth air cylinder, and a drain outlet is provided at the bottom of the rain gauge.

[0012] Preferably, the side wall of the sedimentation cylinder is fixedly connected to the fifth air cylinder, the interior of the fifth air cylinder is fixedly connected to the fifth piston plate, one end of the fifth piston plate is fixedly connected to the second rack, the second rack is meshed with the second gear, the interior of the third seal is fixedly connected to the second rotating shaft, the gear is fixedly connected to the rotating shaft, the top of the fifth air cylinder is provided with a through hole, the side wall of the sedimentation cylinder is fixedly connected to the sixth air cylinder, the sixth air cylinder is slidably connected to the sixth piston plate, one end of the second rack is fixedly connected to a connecting rod, and the connecting rod extends into the sixth air cylinder at one end away from the second rack.

[0013] Preferably, each of the first gas cylinders is provided with a through hole, each of the through holes on the first gas cylinder is connected with the through hole of the fifth gas cylinder, the bottom of the sixth gas cylinder is provided with a through hole connected with the fourth gas cylinder, and the bottom of the sixth gas cylinder is provided with a through hole connected with the bottom of the third gas cylinder.

[0014] The collection method of the rainwater collection device based on the sponge city includes the following steps: S1. Rainwater flows from the manhole cover into the sedimentation cylinder for sedimentation. As the rainwater inside the sedimentation cylinder increases, the rainwater passes through the first water inlet pipe and the rainwater purifier into the water storage tank; S2. When the water stored in the reservoir is not used in time and the water stored in the reservoir increases to a threshold, the reservoir is drained to ensure that the reservoir has a certain flood discharge capacity; S3. Flood prevention prediction is performed through the rain gauge. When the precipitation is large, the water level inside the sedimentation tube covers the first water inlet pipe. At this time, the first sewage hole is opened to discharge sewage and flood, and the second water inlet pipe is pre-opened; S4. Measure the precipitation through a rain gauge. When the measured precipitation is large, open the first drainage hole and the second water inlet pipe in advance to prevent waterlogging caused by untimely flood discharge; S5. Flood prevention prediction is performed by coordinating the water storage capacity inside the reservoir with the precipitation detected by the rain gauge. The more water storage capacity inside the reservoir, the smaller the precipitation threshold for controlling the opening of the first sewage outlet and the second water inlet pipe.

[0015] Technical effects and advantages of the present invention: 1. The present invention maintains a certain water level by accumulating water inside the water reservoir 1 to ensure that there is a certain buffer space inside the water reservoir 1 when heavy rain or prolonged rain causes heavy precipitation. When the precipitation is heavy, water is discharged simultaneously through the second drainage hole 11 and the first drainage hole 21 to prevent the water inside the rainwater collection device from being unable to be quickly discharged, thereby causing waterlogging.

[0016] 2. The present invention rotates the drum 222 to rotate the agitator 22, so that the sediment at the bottom of the sedimentation drum 2 is stirred and loosened to ensure that rainwater inside the sedimentation drum 2 can smoothly wash away the sediment, thereby preventing the sediment in the rainwater from accumulating at the bottom of the sedimentation drum 2 and causing the first sewage discharge hole 21 to be blocked by sediment.

[0017] 3. The present invention adjusts the pre-opening state of the first sewage discharge hole 21 and the second water inlet pipe 24 through the buffer space inside the reservoir 1 and the precipitation, so as to prevent the phenomenon of urban waterlogging caused by insufficient flood discharge capacity due to a sudden increase in precipitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a cross-sectional view of the overall structure of the present invention.

[0020] Figure 3 It is a cross-sectional view of the sedimentation tube structure of the present invention.

[0021] Figure 4 For the present invention Figure 3 A-axis structure enlarged view.

[0022] Figure 5 For the present invention Figure 3 Enlarged view of the B-direction structure.

[0023] Figure 6 It is a cross-sectional view of the water reservoir structure of the present invention.

[0024] Figure 7 It is a cross-sectional view of the third air cylinder structure of the present invention.

[0025] Figure 8 It is a cross-sectional view of the structure of the fifth and sixth air cylinders of the present invention.

[0026] The reference numerals are: 1, water reservoir; 11, second drain hole; 12, second air cylinder; 121, second piston plate; 122, second elastic member; 13, third air cylinder; 131, third piston plate; 132, third piston rod; 14, second sealing member; 2, sedimentation cylinder; 21, first drain hole; 211, first sealing member; 212, first air cylinder; 213, first piston plate; 214, first piston rod; 215, connecting member ; 216, connecting rod; 217, first elastic member; 22, stirring member; 221, supporting rod; 222, rotating drum; 23, first water inlet pipe; 24, second water inlet pipe; 241, third sealing member; 25, rain gauge; 251, fourth air cylinder; 252, fourth piston plate; 253, fourth piston rod; 26, manhole cover; 27, fifth air cylinder; 271, fifth piston plate; 28, sixth air cylinder; 281, sixth piston plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1 In actual use, during the rainy season, due to heavy rain or prolonged rain, the water inside the rainwater collection device cannot be quickly drained away, causing waterlogging. This embodiment is specially invented to solve the above problem.

[0029] See also Figure 1 As shown, a rainwater collection device and a rainwater collection method based on a sponge city according to an embodiment of the present invention include a water reservoir 1 and a sedimentation cylinder 2, wherein an inspection well and a reuse well are arranged inside the water reservoir 1.

[0030] See also Figure 3 and Figure 4 As shown, a first drain hole 21 is provided at the bottom of the sedimentation cylinder 2, and a first sealing member 211 is provided in the first drain hole 21. The first sealing member 211 can change the sealing state of the first drain hole 21 according to the amount of accumulated water inside the sedimentation cylinder 2. An agitator 22 is provided at the inner bottom of the sedimentation cylinder 2. The agitator 22 can stir the sediment at the first drain hole 21 when the first drain hole 21 is opened.

[0031] See also Figure 2 As shown, the side wall of the sedimentation cylinder 2 is provided with a second water inlet pipe 24, which is connected to the sedimentation cylinder 2. Figure 3 and Figure 5As shown, a third sealing member 241 is provided inside one end of the second water inlet pipe 24 close to the sedimentation cylinder 2, and a rain gauge 25 is provided on the top of the sedimentation channel. The rain gauge 25 can change the sealing state of the first sewage hole 21 and the second water inlet pipe 24 according to the water inflow.

[0032] See also Figure 6 As shown, a second drain hole 11 is provided at the bottom of the water reservoir 1, and a second sealing member 14 is provided inside the second drain hole 11. When the amount of water stored in the water reservoir 1 is large, the second sealing member 14 can change the sealing state of the second drain hole 11 according to the amount of water stored in the water reservoir 1.

[0033] See also Figure 2 As shown, a first water inlet pipe 23 is arranged parallel to the second water inlet pipe 24, one end of the first water inlet pipe 23 is connected to the sedimentation tube 2, and one end of the first water inlet pipe 23 away from the sedimentation tube 2 is fixedly connected to a rainwater purifier, the first water inlet pipe 23 and the second water inlet pipe 24 are respectively connected to the rainwater purifier, and the rainwater purifier is connected to the water storage tank 1 through a pipeline, wherein the rainwater purifier is the prior art.

[0034] See also Figure 3 and Figure 4 As shown, the outer wall of the first drain hole 21 is fixedly connected to the first gas cylinder 212, the inner wall of the first gas cylinder 212 is slidably connected to the first piston plate 213, one end of the first piston plate 213 is fixedly connected to the first piston rod 214, the end of the first piston rod 214 away from the first piston plate 213 extends out of the first gas cylinder 212, the end of the first piston rod 214 away from the first piston plate 213 is fixedly connected to the connecting piece 215, the side wall of the connecting piece 215 is fixedly connected to the connecting rod 216, and the connecting rod 216 is fixedly connected to the first gas cylinder 212. The connecting rod 216 is fixedly connected to the first sealing member 211, and the connecting rod 216 passes through the first sealing member 211. A first elastic member 217 is arranged in the first gas cylinder 212. One end of the first elastic member 217 is fixedly connected to one end of the first piston plate 213 close to the first piston rod 214, and the other end of the first elastic member 217 is fixedly connected to the inner bottom wall of the first sewage hole 21. There are multiple first gas cylinders 212 and they are distributed circumferentially along the first sewage hole 21, wherein the first elastic member 217 is a spring.

[0035] See also Figure 3 As shown, a slide groove is provided at the bottom of the sedimentation cylinder 2, and the agitator 22 is rotatably connected to the slide groove. One end of the agitator 22 is fixedly connected to the support rod 221, and the side wall of the support rod 221 is fixedly connected to the rotating drum 222. The inner wall of the rotating drum 222 is rotatably connected to the connecting rod 216, and the end of the connecting rod 216 away from the connecting member 215 is fixedly connected to a ball. A spiral slide groove is provided on the inner wall of the rotating drum 222, and the ball is slidably connected to the spiral slide groove provided on the inner wall of the rotating drum 222.

[0036] See also Figure 6The inner wall of the water reservoir 1 is fixedly connected with the second gas cylinder 12, the interior of the second gas cylinder 12 is slidably connected with the second piston plate 121, a second elastic member 122 is arranged in the second gas cylinder 12, one end of the second elastic member 122 is fixedly connected with the second piston plate 121, the other end of the second elastic member 122 is fixedly connected with the inner top wall of the second gas cylinder 12, and a pipeline communicating with the water reservoir 1 is opened at the bottom of the second gas cylinder 12, combined with Figure 7 As shown, the outer bottom surface of the water reservoir 1 is fixedly connected to the third air cylinder 13, the interior of the third air cylinder 13 is slidably connected to the third piston plate 131, one end of the third piston plate 131 is fixedly connected to the third piston rod 132, the end of the third piston rod 132 away from the third piston plate 131 is fixedly connected to the first rack, the first rack is meshed with the first gear, the interior of the second sealing member 14 is fixedly connected to the first rotating shaft, the rotating shaft and the gear are fixedly connected, the top of the second air cylinder 12 and the top of the third air cylinder 13 are provided with a through hole connected by a soft air pipe, wherein the second elastic member 122 is a spring.

[0037] See also Figure 3 and Figure 5 As shown, a manhole cover 26 is fixedly connected to the top of the sedimentation cylinder 2, and a fourth air cylinder 251 is fixedly connected to one end of the manhole cover 26 close to the sedimentation cylinder 2, and a fourth piston plate 252 is fixedly connected to the inside of the fourth air cylinder 251, and one end of the fourth piston plate 252 is fixedly connected to a fourth piston rod 253, and the fourth piston rod 253 extends out of the fourth air cylinder 251 at one end away from the fourth piston plate 252 and is fixedly connected to the rain gauge 25, and a spring is sleeved on the outer wall of the fourth piston rod 253, one end of the spring is fixedly connected to one end of the fourth piston plate 252 close to the fourth piston rod 253, and the other end of the spring is fixedly connected to the inner bottom wall of the fourth air cylinder 251, and a drain outlet is provided at the bottom of the rain gauge 25.

[0038] See also Figure 8 As shown, the side wall of the sedimentation cylinder 2 is fixedly connected to the fifth air cylinder 27, the interior of the fifth air cylinder 27 is fixedly connected to the fifth piston plate 271, one end of the fifth piston plate 271 is fixedly connected to the second rack, the second rack is meshed with the second gear, the interior of the third sealing member 241 is fixedly connected to the second rotating shaft, the gear is fixedly connected to the rotating shaft, a through hole is provided on the top of the fifth air cylinder 27, the side wall of the sedimentation cylinder 2 is fixedly connected to the sixth air cylinder 28, the sixth air cylinder 28 is slidably connected to the sixth piston plate 281, one end of the second rack is fixedly connected to a connecting rod, and the connecting rod extends into the sixth air cylinder 28 at one end away from the second rack.

[0039] See also Figure 4 As shown, each first gas cylinder 212 is provided with a through hole. Figure 8As shown, each through hole on the first gas cylinder 212 is connected to the through hole of the fifth gas cylinder 27, the bottom of the sixth gas cylinder 28 is provided with a through hole connected to the fourth gas cylinder 251, and the sedimentation cylinder 2 is provided with an avoidance hole. Figure 7 As shown, a through hole communicating with the bottom of the third gas cylinder 13 is formed at the bottom of the sixth gas cylinder 28 .

[0040] When in use, rainwater enters the sedimentation cylinder 2 through the manhole cover 26 and settles inside. As the rainwater inside the sedimentation cylinder 2 gradually increases, when the water level inside the sedimentation cylinder 2 reaches the first water inlet pipe 23, the rainwater passes through the first water inlet pipe 23 and the rainwater purifier into the water reservoir 1. As the rainwater enters the water reservoir 1, when the water level inside the water reservoir 1 reaches the second air cylinder 12, the rainwater enters the second air cylinder 12. The rainwater enters the second air cylinder 12, causing the second piston plate 121 to slide upward, thereby compressing the second elastic member 122 and squeezing the gas inside the second air cylinder 12. The gas inside the second gas cylinder 12 is squeezed so that the gas inside the second gas cylinder 12 enters the upper part of the third gas cylinder 13 through the soft gas tube, so that the third piston plate 131 slides downward in the third gas cylinder 13, so that the third piston rod 132 drives the first rack to slide downward, and the first rack is driven to move by the third piston rod 132, so that the first gear drives the second sealing member 14 to rotate, so that the second sewage hole 11 is opened, and the water inside the water reservoir 1 is discharged at this time. When the water level drops below the second gas cylinder 12, the second elastic member 122 squeezes the second piston plate 121 so that the first sealing member 14 is driven to rotate. The second drainage hole 11 is sealed. When the precipitation increases and the water inflow of the sedimentation cylinder 2 is greater than the drainage of the first water inlet pipe 23, as the water accumulation inside the sedimentation cylinder 2 continues to increase and the accumulated water completely covers the first water inlet pipe 23, at this time, the first sealing member 211 moves downward due to the gravity of the water, so that the first drainage hole 21 is opened, and at the same time, the first piston plate 213 slides inside the first gas cylinder 212 to squeeze the first elastic member 217, so that the gas inside the fifth gas cylinder 27 enters the upper end of the first gas cylinder 212, so that the fifth piston plate 271 moves upward, and the second water inlet pipe 2 4 is opened in advance. When the water level of the accumulated water in the sedimentation cylinder 2 reaches the second water inlet pipe 24, the accumulated water enters the water storage tank through the second water inlet pipe 24. As the accumulated water in the sedimentation cylinder 2 is discharged, the first elastic member 217 relaxes to seal the first drain hole 21. The accumulated water in the water storage tank 1 is kept at a certain water level to ensure that there is a certain buffer space inside the water storage tank 1 when heavy rain or prolonged rain causes heavy precipitation. When the precipitation is heavy, the water is discharged simultaneously through the second drain hole 11 and the first drain hole 21 to prevent the water in the rainwater collection device from being unable to be quickly discharged, thereby causing waterlogging.

[0041] Example 2 In actual use, it was found that since rainwater flows through the ground and then flows into the reservoir through pipes, a lot of mud and sand easily accumulates at the bottom of the sedimentation cylinder, causing blockage of the sewage outlet. Further improvements were made on the basis of the above embodiment.

[0042] On the basis of the above embodiment, during use, as rainwater continuously enters the interior of the sedimentation barrel 2, the pressure on the first seal 211 continuously increases. When the pressure on the first seal 211 is greater than the supporting force of the first elastic member 217, the first seal 211 moves downward, thereby causing the connecting rod 216 to move inside the rotating drum 222. The connecting rod 216 moves inside the rotating drum 222, causing the ball to slide inside the spiral groove opened in the rotating drum 222, thereby causing the rotating drum 222 to rotate. The rotation of the rotating drum 222 causes the agitator 22 to rotate, thereby causing the sediment at the bottom of the sedimentation barrel 2 to be stirred and loosened to ensure that the rainwater inside the sedimentation barrel 2 can smoothly wash away the sediment, thereby preventing the sediment in the rainwater from accumulating at the bottom of the sedimentation barrel and causing the first sewage discharge hole 21 to be blocked by the sediment.

[0043] Example 3 In actual use, it was found that during the rainy season, the sudden increase in precipitation could easily lead to insufficient flood discharge capacity of the flood discharge rainwater collection device, causing urban waterlogging. Further improvements were made on the basis of the above embodiments.

[0044] When in use, when it rains, part of the rainwater enters the rain gauge 25 through the manhole cover 26. When the precipitation is small, the drainage volume inside the rain gauge 25 is greater than the water intake volume. When the precipitation gradually increases, water gradually accumulates inside the rain gauge 25. As the accumulated water continues to increase, the rain gauge 25 moves downward, causing the fourth piston rod 253 to drive the fourth piston plate 252 to slide downward to squeeze the spring, thereby compressing the spring and squeezing the internal gas of the fourth air cylinder 251 so that the gas enters the bottom of the sixth air cylinder 28 through the through hole, thereby causing the sixth piston plate 281 to slide upward. As the precipitation increases, the upward distance of the sixth piston plate 281 increases. When the sixth piston plate 281 contacts the connecting rod, the sixth piston plate 281 continues to move upward, causing the second rack to move upward. , so that the second rack drives the second gear to rotate so that the third sealing member 241 no longer seals the second water inlet pipe 24, and at the same time drives the fifth piston plate 271 to move upward through the rack so that the internal gas of the fifth air cylinder 27 enters the first air cylinder 212, so that the first sewage hole 21 is opened. When too much water accumulates inside the water reservoir 1, the third piston plate 131 moves downward to open the second sewage hole 11, and at the same time squeezes the gas at the bottom of the third air cylinder 13 so that the gas enters the sixth air cylinder 28, so that the sixth piston plate 281 moves upward. The pre-opening state of the first sewage hole 21 and the second water inlet pipe 24 is adjusted by the buffer space inside the water reservoir 1 and the precipitation, so as to prevent the phenomenon of urban waterlogging caused by insufficient flood discharge capacity due to the sudden increase in precipitation.

[0045] Example 4 On the basis of the above embodiment, this embodiment further provides a collection method of a rainwater collection device based on a sponge city, including the following specific steps: S1. Rainwater flows from the manhole cover 26 into the sedimentation barrel 2 for sedimentation. As the amount of rainwater inside the sedimentation barrel 2 increases, the rainwater passes through the first water inlet pipe 23 and the rainwater purifier and enters the water reservoir 1.

[0046] S2. When the water stored in reservoir 1 is not used in time and the water stored in reservoir 1 increases to a threshold, reservoir 1 is drained to ensure that reservoir 1 has a certain flood discharge capacity.

[0047] S3. Flood prevention prediction is performed through the rain gauge 25. When the precipitation is large, the water level inside the sedimentation barrel 2 covers the first water inlet pipe 23. At this time, the first sewage hole 21 is opened to discharge sewage and flood, and the second water inlet pipe 24 is pre-opened.

[0048] S4. Measure the precipitation through the rain gauge 25. When the measured precipitation is large, open the first drainage hole 21 and the second water inlet pipe 24 in advance to prevent waterlogging caused by untimely flood discharge.

[0049] S5. Flood prevention prediction is performed by combining the water storage capacity inside the reservoir 1 with the precipitation detected by the rain gauge 25. The more water storage capacity inside the reservoir 1, the smaller the precipitation threshold for controlling the opening of the first sewage discharge hole 21 and the second water inlet pipe 24.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rainwater collection device based on a sponge city, comprising a water reservoir (1), wherein an inspection well and a recycling well are arranged inside the water reservoir (1), characterized in that: Also includes: A sedimentation cylinder (2), wherein a first drainage hole (21) is provided at the bottom of the sedimentation cylinder (2), a first sealing member (211) is provided in the first drainage hole (21), and the first sealing member (211) can change the sealing state of the first drainage hole (21) according to the amount of accumulated water inside the sedimentation cylinder (2), and a stirring member (22) is provided at the inner bottom of the sedimentation cylinder (2), and the stirring member (22) can stir the sediment at the first drainage hole (21) when the first drainage hole (21) is opened; A second water inlet pipe (24) is provided on the side wall of the sedimentation cylinder (2), the second water inlet pipe (24) is connected to the sedimentation cylinder (2), a third sealing member (241) is provided inside one end of the second water inlet pipe (24) close to the sedimentation cylinder (2), and a rain gauge (25) is provided on the top of the sedimentation cylinder (2), the rain gauge (25) being capable of changing the sealing state of the first sewage discharge hole (21) and the second water inlet pipe (24) according to the amount of water inflow.

2. The rainwater collection device based on sponge city according to claim 1 is characterized in that: A second drain hole (11) is provided at the bottom of the water reservoir (1), and a second sealing member (14) is provided inside the second drain hole (11). When the amount of water stored in the water reservoir (1) is relatively large, the second sealing member (14) can change the sealing state of the second drain hole (11) according to the amount of water stored in the water reservoir (1).

3. The rainwater collection device based on sponge city according to claim 2 is characterized in that: A first water inlet pipe (23) is arranged parallel to the lower side of the second water inlet pipe (24); one end of the first water inlet pipe (23) is connected to the sedimentation drum (2); one end of the first water inlet pipe (23) away from the sedimentation drum (2) is fixedly connected to a rainwater purifier; the first water inlet pipe (23) and the second water inlet pipe (24) are respectively connected to the rainwater purifier; and the rainwater purifier is connected to the water reservoir (1) via a pipeline.

4. The rainwater collection device based on sponge city according to claim 3 is characterized in that: The outer wall of the first drain hole (21) is fixedly connected to a first gas cylinder (212), the inner wall of the first gas cylinder (212) is slidably connected to a first piston plate (213), one end of the first piston plate (213) is fixedly connected to a first piston rod (214), an end of the first piston rod (214) away from the first piston plate (213) extends out of the first gas cylinder (212), an end of the first piston rod (214) away from the first piston plate (213) is fixedly connected to a connecting piece (215), and a side wall of the connecting piece (215) is fixedly connected to a connecting rod (216), the connecting rod (216) is fixedly connected to the first sealing member (211), the connecting rod (216) passes through the first sealing member (211), a first elastic member (217) is arranged in the first gas cylinder (212), one end of the first elastic member (217) is fixedly connected to an end of the first piston plate (213) close to the first piston rod (214), the other end of the first elastic member (217) is fixedly connected to the inner bottom wall of the first drain hole (21), and the first gas cylinder (212) is multiple and distributed circumferentially along the first drain hole (21).

5. The rainwater collection device based on sponge city according to claim 4 is characterized in that: A slide groove is provided at the bottom of the sedimentation cylinder (2), the stirring member (22) is rotatably connected to the slide groove, one end of the stirring member (22) is fixedly connected to a support rod (221), the side wall of the support rod (221) is fixedly connected to a rotating drum (222), the inner wall of the rotating drum (222) is rotatably connected to a connecting rod (216), one end of the connecting rod (216) away from the connecting member (215) is fixedly connected to a ball bearing, the inner wall of the rotating drum (222) is provided with a spiral slide groove, and the ball bearing is slidably connected to the spiral slide groove provided on the inner wall of the rotating drum (222).

6. The rainwater collection device based on sponge city according to claim 5 is characterized in that: The inner side wall of the water reservoir (1) is fixedly connected to a second gas cylinder (12), the interior of the second gas cylinder (12) is slidably connected to a second piston plate (121), a second elastic member (122) is arranged inside the second gas cylinder (12), one end of the second elastic member (122) is fixedly connected to the second piston plate (121), the other end of the second elastic member (122) is fixedly connected to the inner top wall of the second gas cylinder (12), a pipeline communicating with the water reservoir (1) is provided at the bottom of the second gas cylinder (12), and the outer bottom surface of the water reservoir (1) is fixedly connected to the second piston plate (121). A third gas cylinder (13) is provided, wherein a third piston plate (131) is slidably connected inside the third gas cylinder (13), a third piston rod (132) is fixedly connected to one end of the third piston plate (131), a first rack is fixedly connected to one end of the third piston rod (132) away from the third piston plate (131), a first rack is meshed with a first gear, a first rotating shaft is fixedly connected inside the second sealing member (14), the rotating shaft is fixedly connected to the gear, and a through hole is provided at the top of the second gas cylinder (12) and the top of the third gas cylinder (13) to communicate with each other.

7. The rainwater collection device based on sponge city according to claim 6 is characterized in that: The top of the sedimentation cylinder (2) is fixedly connected to a manhole cover (26); one end of the manhole cover (26) close to the sedimentation cylinder (2) is fixedly connected to a fourth gas cylinder (251); the interior of the fourth gas cylinder (251) is fixedly connected to a fourth piston plate (252); one end of the fourth piston plate (252) is fixedly connected to a fourth piston rod (253); an end of the fourth piston rod (253) away from the fourth piston plate (252) extends out of the fourth gas cylinder (251) and is fixedly connected to the rain gauge (25); a spring is sleeved on the outer wall of the fourth piston rod (253); one end of the spring is fixedly connected to one end of the fourth piston plate (252) close to the fourth piston rod (253); the other end of the spring is fixedly connected to the inner bottom wall of the fourth gas cylinder (251); and a drainage port is provided at the bottom of the rain gauge (25).

8. The rainwater collection device based on sponge city according to claim 7 is characterized in that: The side wall of the sedimentation cylinder (2) is fixedly connected to a fifth air cylinder (27), the interior of the fifth air cylinder (27) is fixedly connected to a fifth piston plate (271), one end of the fifth piston plate (271) is fixedly connected to a second rack, the second rack is meshed with a second gear, the interior of the third sealing member (241) is fixedly connected to a second rotating shaft, the gear is fixedly connected to the rotating shaft, a through hole is provided at the top of the fifth air cylinder (27), the side wall of the sedimentation cylinder (2) is fixedly connected to a sixth air cylinder (28), the sixth air cylinder (28) is slidably connected to a sixth piston plate (281), one end of the second rack is fixedly connected to a connecting rod, the connecting rod extends into the sixth air cylinder (28) at an end away from the second rack.

9. The rainwater collection device based on sponge city according to claim 8 is characterized in that: Each of the first gas cylinders (212) is provided with a through hole, and each of the through holes on the first gas cylinder (212) is connected to the through hole of the fifth gas cylinder (27). The bottom of the sixth gas cylinder (28) is provided with a through hole connected to the fourth gas cylinder (251), and the bottom of the sixth gas cylinder (28) is provided with a through hole connected to the bottom of the third gas cylinder (13).

10. A method for collecting rainwater using a sponge city-based rainwater collection device, using the sponge city-based rainwater collection device according to claim 9, characterized in that: The following steps are involved: S1. Rainwater flows from the manhole cover (26) into the sedimentation tube (2) for sedimentation. As the amount of rainwater inside the sedimentation tube (2) increases, the rainwater passes through the first water inlet pipe (23) and the rainwater purifier into the water storage tank (1); S2. When the water stored in the reservoir (1) is not used in time and the water stored in the reservoir (1) increases to a threshold, the reservoir (1) is drained to ensure that the reservoir (1) has a certain flood discharge capacity; S3. Flood prevention prediction is performed through the rain gauge (25). When the precipitation is large, the water level inside the sedimentation barrel (2) covers the first water inlet pipe (23). At this time, the first sewage hole (21) is opened to discharge sewage and flood, and the second water inlet pipe (24) is pre-opened; S4. The precipitation is measured by a rain gauge (25). When a large amount of precipitation is measured, the first drainage hole (21) and the second water inlet pipe (24) are opened in advance to prevent waterlogging caused by untimely flood discharge; S5. Flood prevention prediction is performed by combining the water storage volume inside the reservoir (1) with the precipitation volume detected by the rain gauge (25). The greater the water storage volume inside the reservoir (1), the smaller the precipitation threshold for controlling the opening of the first drainage hole (21) and the second water inlet pipe (24).

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