Rainwater Collection Device Based on Sponge City and Its Collection Method

Abstract

The present invention discloses a rainwater collection device based on a sponge city and its collection method, specifically relating to the technical field of rainwater collection. It includes a reservoir and a sedimentation cylinder. A manhole and a reuse well are arranged inside the reservoir. A first sewage discharge hole is opened at the bottom of the sedimentation cylinder, and a first sealing member is arranged in the first sewage discharge hole. When the water storage in the sedimentation cylinder is relatively large, the first sealing member can change the sealing state according to the accumulated water volume 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 sewage discharge hole when the first sewage discharge hole is opened. A second water inlet pipe is arranged on the side wall of the sedimentation cylinder. By pre-opening the sewage outlet according to the precipitation and the water storage volume inside the reservoir, and keeping the accumulated water inside the reservoir at a certain water level, the present invention enables the reservoir to have a certain buffer space, so as to ensure that when there is heavy rain or continuous rain resulting in a large precipitation, the rainwater collection device can quickly discharge floodwater to prevent urban waterlogging.

Description

Technical Field

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

[0002] Under the background of a sponge city, urban construction focuses on imitating the functions of natural ecosystems in absorbing, infiltrating, and slowly releasing rainwater. To achieve the effective collection, storage, and purification of rainwater, and rationally utilize rainwater resources for multiple aspects such as landscape irrigation, road cleaning, and building flushing, thereby reducing the risk of urban waterlogging, reducing the pollution of water bodies by rainwater runoff, promoting the balance of urban hydrological cycles, and enhancing the ecological resilience and sustainable development ability of cities.

[0003] However, existing rainwater collection devices cannot drain flood in advance according to the amount of precipitation and the size of the buffer space inside the reservoir when it rains, resulting in the phenomenon of urban waterlogging. At the same time, when rainwater flows into the rainwater collection device through the ground surface, a large amount of sediment is likely to cause the blockage of the sewage discharge holes. Summary of the Invention

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

[0005] To achieve the above object, the present invention provides the following technical solutions: A rainwater collection device and a collection method based on a sponge city, including: a reservoir and a sedimentation cylinder. A manhole and a reuse well are arranged inside the reservoir. A first sewage discharge hole is opened at the bottom of the sedimentation cylinder, and a first sealing member is arranged inside the first sewage discharge hole. The first sealing member can change the sealing state of the first sewage discharge hole according to the accumulated water volume inside the sedimentation cylinder. An agitating member is arranged at the inner bottom of the sedimentation cylinder. The agitating member can agitate the sediment at the first sewage discharge hole when the first sewage discharge hole is opened. A second water inlet pipe is arranged on the side wall of the sedimentation cylinder. The second water inlet pipe is communicated with the sedimentation cylinder. A third sealing member is arranged inside the second water inlet pipe near one end of the sedimentation cylinder. A rain gauge is arranged at the top of the sedimentation cylinder. The rain gauge can change the sealing states of the first sewage discharge hole and the second water inlet pipe according to the water inflow volume.

[0006] Preferably, a second sewage discharge hole is arranged at the bottom of the reservoir, and a second sealing member is arranged inside the second sewage discharge hole. When the water storage volume inside the reservoir is large, the second sealing member can change the sealing state of the second sewage discharge hole according to the accumulated water volume of the reservoir.

[0007] Preferably, a first water inlet pipe is arranged in parallel below the second water inlet pipe. One end of the first water inlet pipe is communicated with the sedimentation cylinder. The end of the first water inlet pipe far from the sedimentation cylinder is fixedly connected with a rainwater purifier. The first water inlet pipe and the second water inlet pipe are respectively communicated with the rainwater purifier. The rainwater purifier is communicated with the reservoir through a pipeline.

[0008] Preferably, a first air cylinder is fixedly connected to the outer wall of the first sewage discharge hole. A first piston plate is slidably connected to the inner wall of the first air cylinder. One end of the first piston plate is fixedly connected to a first piston rod. The end of the first piston rod far from the first piston plate extends out of the first air cylinder. The end of the first piston rod far from the first piston plate is fixedly connected to a connecting piece. A connecting rod is fixedly connected to the side wall of the connecting piece. The connecting rod is fixedly connected to the first seal. The connecting rod penetrates through the first seal. A first elastic member is arranged in the first air cylinder. One end of the first elastic member is fixedly connected to the end of the first piston plate close to the first piston rod. The other end of the first elastic member is fixedly connected to the inner bottom wall of the first sewage discharge hole. There are multiple first air cylinders and they are distributed circumferentially along the first sewage discharge hole.

[0009] Preferably, a chute is formed in the bottom of the sedimentation cylinder. The stirring member is rotatably connected to the chute. One end of the stirring member is fixedly connected to a support rod. A rotating cylinder is fixedly connected to the side wall of the support rod. The inner wall of the rotating cylinder is rotatably connected to the connecting rod. A ball is fixedly connected to the end of the connecting rod far from the connecting piece. A spiral chute is formed in the inner wall of the rotating cylinder. The ball is slidably connected to the spiral chute formed in the inner wall of the rotating cylinder.

[0010] Preferably, a second air cylinder is fixedly connected to the inner side wall of the reservoir. A second piston plate is slidably connected to the inside of the second air cylinder. 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 pipeline communicating with the reservoir is formed in the bottom of the second air cylinder. A third air cylinder is fixedly connected to the outer bottom surface of the reservoir. A third piston plate is slidably connected to the inside of the third air cylinder. One end of the third piston plate is fixedly connected to a third piston rod. The end of the third piston rod far from the third piston plate is fixedly connected to a first rack. The first rack meshes with a first gear. A first rotating shaft is fixedly connected to the inside of the second seal. The rotating shaft is fixedly connected to the gear. A through hole communicating with each other is formed in the tops of the second air cylinder and the third air cylinder.

[0011] Preferably, a manhole cover is fixedly connected to the top end of the precipitation cylinder. One end of the manhole cover close to the precipitation cylinder is fixedly connected to a fourth air 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. The end of the fourth piston rod away from the fourth piston plate extends out of the fourth air cylinder 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 the end of the fourth piston plate close to the fourth piston rod, and the other end of the spring is fixedly connected to the inner bottom wall of the fourth air cylinder. A drain port is opened at the bottom of the rain gauge.

[0012] Preferably, a fifth air cylinder is fixedly connected to the side wall of the precipitation cylinder. A fifth piston plate is fixedly connected to the inside of the fifth air cylinder. One end of the fifth piston plate is fixedly connected to a second rack. The second rack meshes with a second gear. A second rotating shaft is fixedly connected to the inside of the third seal. The gear is fixedly connected to the rotating shaft. A through hole is opened at the top of the fifth air cylinder. A sixth air cylinder is fixedly connected to the side wall of the precipitation cylinder. A sixth piston plate is slidably connected to the inside of the sixth air cylinder. One end of the second rack is fixedly connected to a connecting rod, and the end of the connecting rod away from the second rack extends into the sixth air cylinder.

[0013] Preferably, each first air cylinder is provided with a through hole, and the through holes on each first air cylinder communicate with the through hole of the fifth air cylinder. A through hole communicating with the fourth air cylinder is opened at the bottom of the sixth air cylinder.

[0014] The collection method of the rainwater collection device based on the sponge city includes the following steps:

[0015] S1. Rainwater flows into the precipitation cylinder from the manhole cover for precipitation. As the rainwater inside the precipitation cylinder increases, the rainwater enters the inside of the reservoir through the first water inlet pipe after passing through the rainwater purifier.

[0016] S2. When the water stored in the reservoir is not used in time and the water stored in the reservoir increases to the threshold, the reservoir drains water to ensure that the reservoir has a certain flood discharge capacity.

[0017] S3. Anti-flood prediction is carried out through the rain gauge. When the precipitation is large, the water level inside the precipitation cylinder covers the first water inlet pipe. At this time, the first sewage discharge hole is opened for sewage discharge and flood discharge, and at the same time, the second water inlet pipe is opened in advance.

[0018] S4. The precipitation is measured through the rain gauge. When it is measured that the precipitation is large, the first sewage discharge hole and the second water inlet pipe are opened in advance to prevent waterlogging caused by untimely flood discharge.

[0019] S5. Anti-flood prediction is carried out by matching the water storage volume inside the reservoir with the precipitation detected by the rain gauge. The more the water storage volume inside the reservoir, the smaller the precipitation threshold for controlling the opening of the first sewage discharge hole and the second water inlet pipe.

[0020] Technical effects and advantages of the present invention:

[0021] 1. In the present invention, the accumulated water inside the reservoir 1 is maintained at a certain water level to ensure that when there is heavy rain or continuous rain resulting in a large precipitation, there is a certain buffer space inside the reservoir 1. When the precipitation is large, the second sewage discharge hole 11 and the first sewage discharge hole 21 are used to drain water simultaneously to prevent the water inside the rainwater collection device from not being discharged quickly, thus causing waterlogging.

[0022] 2. In the present invention, the rotation of the rotating cylinder 222 causes the stirring member 22 to rotate, so that the sediment at the bottom of the sedimentation cylinder 2 is stirred and loosened to ensure that the rainwater inside the sedimentation cylinder 2 can smoothly wash away the sediment, thereby preventing the sediment in the rainwater from accumulating at the bottom of the sedimentation cylinder 2 and causing the first sewage discharge hole 21 to be blocked by sediment.

[0023] 3. In the present invention, the buffer space inside the reservoir 1 and the precipitation are used to adjust the pre-opening states of the first sewage discharge hole 21 and the second water inlet pipe 24, preventing the phenomenon of urban waterlogging caused by insufficient flood discharge capacity due to a sudden increase in precipitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a cross-sectional view of the overall structure of the present invention.

[0026] Figure 3 It is a cross-sectional view of the sedimentation cylinder structure of the present invention.

[0027] Figure 4 For the present invention Figure 3 Enlarged view of the structure in the A direction.

[0028] Figure 5 For the present invention Figure 3 Enlarged view of the structure in the B direction.

[0029] Figure 6 It is a cross-sectional view of the reservoir structure of the present invention.

[0030] Figure 7 It is a cross-sectional view of the third air cylinder structure of the present invention.

[0031] Figure 8 It is a cross-sectional view of the fifth air cylinder and the sixth air cylinder structures of the present invention.

[0032] The reference numerals are as follows: 1, water storage tank; 11, second sewage discharge 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 seal; 2, sedimentation cylinder; 21, first sewage discharge hole; 211, first seal; 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, support rod; 222, rotating cylinder; 23, first water inlet pipe; 24, second water inlet pipe; 241, third seal; 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 implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0034] In the actual use process, during the rainy season, due to heavy rain or long-term rain, the phenomenon of waterlogging caused by the inability to quickly drain the water inside the rainwater collection device. To solve the above problems, this embodiment is specifically invented.

[0035] Please refer to Figure 1 As shown, a rainwater collection device based on a sponge city and its collection method according to an embodiment of the present invention include a water storage tank 1 and a sedimentation cylinder 2. A manhole and a reuse well are arranged inside the water storage tank 1.

[0036] Please refer to Figure 3 and Figure 4 As shown, a first sewage discharge hole 21 is opened at the bottom of the sedimentation cylinder 2. A first seal 211 is arranged inside the first sewage discharge hole 21. The first seal 211 can change the sealing state of the first sewage discharge hole 21 according to the accumulated water volume inside the sedimentation cylinder 2. A stirring member 22 is arranged at the inner bottom of the sedimentation cylinder 2. The stirring member 22 can stir the sediment at the first sewage discharge hole 21 when the first sewage discharge hole 21 is opened.

[0037] Please refer to Figure 2 As shown, a second water inlet pipe 24 is arranged on the side wall of the sedimentation cylinder 2. The second water inlet pipe 24 is communicated with the sedimentation cylinder 2. In combination with Figure 3 and Figure 5As shown in the figure, a third seal 241 is provided inside one end of the second water inlet pipe 24 close to the sedimentation cylinder 2. A rain gauge 25 is provided at the top of the sedimentation channel. The rain gauge 25 can change the sealing states of the first sewage discharge hole 21 and the second water inlet pipe 24 according to the water inflow volume.

[0038] Please refer to Figure 6 As shown in the figure, a second sewage discharge hole 11 is provided at the bottom of the water storage tank 1. A second seal 14 is provided inside the second sewage discharge hole 11. When the water storage volume inside the water storage tank 1 is large, the second seal 14 can change the sealing state of the second sewage discharge hole 11 according to the water accumulation volume in the water storage tank 1.

[0039] Please refer to Figure 2 As shown in the figure, a first water inlet pipe 23 is arranged in parallel below the second water inlet pipe 24. One end of the first water inlet pipe 23 is communicated with the sedimentation cylinder 2. A rainwater purifier is fixedly connected to the end of the first water inlet pipe 23 far from the sedimentation cylinder 2. The first water inlet pipe 23 and the second water inlet pipe 24 are respectively communicated with the rainwater purifier. The rainwater purifier and the water storage tank 1 are communicated through a pipeline. Among them, the rainwater purifier is a prior art.

[0040] Please refer to Figure 3 and Figure 4 As shown in the figure, a first air cylinder 212 is fixedly connected to the outer wall of the first sewage discharge hole 21. A first piston plate 213 is slidably connected to the inner wall of the first air cylinder 212. One end of the first piston plate 213 is fixedly connected to a first piston rod 214. The end of the first piston rod 214 far from the first piston plate 213 extends out of the first air cylinder 212. A connecting member 215 is fixedly connected to the end of the first piston rod 214 far from the first piston plate 213. A connecting rod 216 is fixedly connected to the side wall of the connecting member 215. The connecting rod 216 is fixedly connected to the first seal 211. The connecting rod 216 penetrates through the first seal 211. A first elastic member 217 is arranged inside the first air cylinder 212. One end of the first elastic member 217 is fixedly connected to the 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 sewage discharge hole 21. The first air cylinders 212 are multiple and distributed circumferentially along the first sewage discharge hole 21. Among them, the first elastic member 217 is a spring.

[0041] Please refer to Figure 3 As shown in the figure, a chute is opened at the bottom of the sedimentation cylinder 2. The stirring member 22 is rotatably connected to the chute. One end of the stirring member 22 is fixedly connected to a support rod 221. A rotating cylinder 222 is fixedly connected to the side wall of the support rod 221. The inner wall of the rotating cylinder 222 is rotatably connected to the connecting rod 216. A rolling ball is fixedly connected to the end of the connecting rod 216 far from the connecting member 215. A spiral chute is opened on the inner wall of the rotating cylinder 222. The rolling ball is slidably connected to the spiral chute opened on the inner wall of the rotating cylinder 222.

[0042] Please refer to Figure 6The inner side wall of the reservoir 1 is fixedly connected with a second air cylinder 12. A second piston plate 121 is slidably connected inside the second air cylinder 12. A second elastic member 122 is arranged inside the second air cylinder 12. One end of the second elastic member 122 is fixedly connected with the second piston plate 121, and the other end of the second elastic member 122 is fixedly connected with the inner top wall of the second air cylinder 12. A pipeline communicating with the reservoir 1 is opened at the bottom of the second air cylinder 12. Combined with Figure 7 As shown, the outer bottom surface of the reservoir 1 is fixedly connected with a third air cylinder 13. A third piston plate 131 is slidably connected inside the third air cylinder 13. One end of the third piston plate 131 is fixedly connected with a third piston rod 132. The end of the third piston rod 132 far from the third piston plate 131 is fixedly connected with a first rack. The first rack meshes with a first gear. A first rotating shaft is fixedly connected inside the second seal 14. The rotating shaft is fixedly connected with the gear. Through holes communicated by a flexible air pipe are opened at the tops of the second air cylinder 12 and the third air cylinder 13. Among them, the second elastic member 122 is a spring.

[0043] Please refer to Figure 3 and Figure 5 As shown, a manhole cover 26 is fixedly connected to the top end of the sedimentation cylinder 2. One end of the manhole cover 26 close to the sedimentation cylinder 2 is fixedly connected with a fourth air cylinder 251. A fourth piston plate 252 is fixedly connected inside the fourth air cylinder 251. One end of the fourth piston plate 252 is fixedly connected with a fourth piston rod 253. The end of the fourth piston rod 253 far from the fourth piston plate 252 extends out of the fourth air cylinder 251 and is fixedly connected with 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 with the end of the fourth piston plate 252 close to the fourth piston rod 253, and the other end of the spring is fixedly connected with the inner bottom wall of the fourth air cylinder 251. A drain port is opened at the bottom of the rain gauge 25.

[0044] Please refer to Figure 8 As shown, a fifth air cylinder 27 is fixedly connected to the side wall of the sedimentation cylinder 2. A fifth piston plate 271 is fixedly connected inside the fifth air cylinder 27. One end of the fifth piston plate 271 is fixedly connected with a second rack. The second rack meshes with a second gear. A second rotating shaft is fixedly connected inside the third seal 241. The gear is fixedly connected with the rotating shaft. A through hole is opened at the top of the fifth air cylinder 27. A sixth air cylinder 28 is fixedly connected to the side wall of the sedimentation cylinder 2. A sixth piston plate 281 is slidably connected inside the sixth air cylinder 28. One end of the second rack is fixedly connected with a connecting rod, and the end of the connecting rod far from the second rack extends into the sixth air cylinder 28.

[0045] Please refer to Figure 4 As shown, each first air cylinder 212 is provided with a through hole. Combined with Figure 8As shown, the through holes on each first air cylinder 212 are all communicated with the through holes of the fifth air cylinder 27. A through hole communicated with the fourth air cylinder 251 is opened at the bottom of the sixth air cylinder 28. An avoidance hole is opened on the sedimentation cylinder 2.

[0046] During use, rainwater enters the inside of the sedimentation cylinder 2 through the manhole cover 26 for sedimentation. 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 enters the inside of the water storage tank 1 through the rainwater purifier. As the rainwater enters the water storage tank 1, when the water level inside the water storage tank 1 reaches the second air cylinder 12, the rainwater enters the second air cylinder 12. Through the rainwater entering the second air cylinder 12, the second piston plate 121 slides upward, thereby causing the second elastic member 122 to be compressed. At the same time, the gas inside the second air cylinder 12 is squeezed. By squeezing the gas inside the second air cylinder 12, the gas inside the second air cylinder 12 enters the upper part of the third air cylinder 13 through the flexible hose, thereby causing the third piston plate 131 to slide downward inside the third air cylinder 13, so that the third piston rod 132 drives the first rack to slide downward. By driving the first rack to move through the third piston rod 132, the first gear drives the second seal 14 to rotate, thereby opening the second sewage discharge hole 11. At this time, the water inside the water storage tank 1 is discharged. When the water level drops below the second air cylinder 12, the second elastic member 122 squeezes the second piston plate 121 to seal the second sewage discharge hole 11. When the precipitation increases and the water inflow of the sedimentation cylinder 2 is greater than the drainage volume of the first water inlet pipe 23, as the accumulated water inside the sedimentation cylinder 2 continuously increases and the accumulated water completely submerges the first water inlet pipe 23, at this time, the first seal 211 moves downward due to the gravity of the water, thereby opening the first sewage discharge hole 21. At the same time, the first piston plate 213 slides inside the first air cylinder 212 to squeeze the first elastic member 217, so that the gas inside the fifth air cylinder 27 enters the upper end of the first air cylinder 212, thereby causing the fifth piston plate 271 to move upward. The second water inlet pipe 24 is pre-opened. When the water level of the accumulated water inside 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 inside the sedimentation cylinder 2 is discharged, the first elastic member 217 expands to seal the first sewage discharge hole 21. By keeping the accumulated water inside the water storage tank 1 at a certain water level, to ensure that when there is heavy rain or long-term rain resulting in a large precipitation, there is a certain buffer space inside the water storage tank 1. When the precipitation is large, the second sewage discharge hole 11 and the first sewage discharge hole 21 drain water simultaneously to prevent the water inside the rainwater collection device from not being discharged quickly, thus causing the phenomenon of waterlogging. Embodiment 2

[0047] During actual use, it is found that since the rainwater flows through the ground and then flows into the water storage tank through the pipeline, there is a lot of sediment and it is easy to accumulate at the bottom of the sedimentation cylinder, causing the sewage discharge port to be blocked. Further improvements are made on the basis of the above embodiment.

[0048] On the basis of the above embodiments, during use, as rainwater continuously enters the inside of the sedimentation cylinder 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, so that the connecting rod 216 moves inside the rotating cylinder 222. By the movement of the connecting rod 216 inside the rotating cylinder 222, the ball slides inside the spiral groove formed in the rotating cylinder 222, so that the rotating cylinder 222 rotates. By the rotation of the rotating cylinder 222, the stirring member 22 rotates, so that the sediment at the bottom of the sedimentation cylinder 2 is stirred and loosened to ensure that the rainwater inside the sedimentation cylinder 2 can smoothly wash away the sediment, thereby preventing the sediment in the rainwater from accumulating at the bottom of the sedimentation cylinder and causing the first sewage discharge hole 21 to be blocked by the sediment. Embodiment 3

[0049] During actual use, it is found that during the rainy season, due to the sudden increase in precipitation, it is easy to cause the phenomenon of urban waterlogging due to the insufficient flood discharge capacity of the flood discharge rainwater collection device. On the basis of the above embodiments, further improvements are made.

[0050] During 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 inflow volume. When the precipitation gradually increases, the rain gauge 25 gradually accumulates water. As the accumulated water continuously increases, the rain gauge 25 moves downward, causing the fourth piston rod 253 to drive the fourth piston plate 252 to slide downward and compress the spring, so that the spring is compressed. At the same time, the gas inside the fourth air cylinder 251 is compressed, and the gas enters the bottom of the sixth air cylinder 28 through the through hole, so that the sixth piston plate 281 slides upward. As the precipitation increases, the upward distance of the sixth piston plate 281 becomes larger. When the sixth piston plate 281 contacts the connecting rod, at this time, 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, and thus the third seal 241 no longer seals the second water inlet pipe 24. At the same time, the rack drives the fifth piston plate 271 to move upward, so that the gas inside the fifth air cylinder 27 enters the first air cylinder 212, so that the first sewage discharge hole 21 is opened. When the water accumulated in the reservoir 1 is too much, the third piston plate 131 moves downward to open the second sewage discharge hole 11. The buffer space inside the reservoir 1 and the precipitation are used to adjust the pre-opening state of the first sewage discharge hole 21 and the second water inlet pipe 24, preventing the phenomenon of urban waterlogging caused by insufficient flood discharge capacity due to the sudden increase in precipitation. Embodiment 4

[0051] On the basis of the above embodiments, this embodiment also provides a collection method for a rainwater collection device based on a sponge city, including the following specific steps:

[0052] S1. Rainwater flows into the sedimentation cylinder 2 from the manhole cover 26 for sedimentation. As the rainwater inside the sedimentation cylinder 2 increases, the rainwater passes through the first water inlet pipe 23, goes through the rainwater purifier, and enters the inside of the reservoir 1.

[0053] S2. When the water stored in the reservoir 1 is not used in time and the water storage inside the reservoir 1 increases to the threshold value, the reservoir 1 drains water to ensure that the reservoir 1 has a certain flood discharge capacity.

[0054] S3. The rain gauge 25 is used for flood prevention prediction. When the precipitation is large, the water level inside the sedimentation cylinder 2 covers the first water inlet pipe 23. At this time, the first sewage discharge hole 21 is opened for sewage discharge and flood discharge, and the second water inlet pipe 24 is also opened in advance.

[0055] S4. The precipitation is measured by the rain gauge 25. When a large amount of precipitation is measured, the first sewage discharge hole 21 and the second water inlet pipe 24 are opened in advance to prevent waterlogging caused by untimely flood discharge.

[0056] S5. The rain gauge 25 is used in cooperation with the water storage volume inside the reservoir 1 for flood prevention prediction. The more the water storage volume inside the reservoir 1 is, the smaller the precipitation threshold value for controlling the opening of the first sewage discharge hole 21 and the second water inlet pipe 24 is.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within 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 drainage hole (21) and the second water inlet pipe (24) according to the amount of water inflow; 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 along the circumference of the first drain hole (21); 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).

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 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). The third gas cylinder (13) is slidably connected to a third piston plate (131) inside the third gas cylinder (13), one end of the third piston plate (131) is fixedly connected to a third piston rod (132), one end of the third piston rod (132) away from the third piston plate (131) is fixedly connected to a first rack, the first rack is meshed with a first gear, the second sealing member (14) is fixedly connected to a first rotating shaft inside, the first rotating shaft is fixedly connected to the first gear, and a through hole that communicates with the top of the second gas cylinder (12) and the top of the third gas cylinder (13) is opened.

5. The rainwater collection device based on sponge city according to claim 4 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).

6. The rainwater collection device based on sponge city according to claim 5 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 second gear is fixedly connected to the second 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.

7. The rainwater collection device based on sponge city according to claim 6 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).

8. A method for collecting rainwater using a sponge city-based rainwater collection device, using the sponge city-based rainwater collection device according to claim 7, 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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