Sponge city drainage system

Abstract

The invention discloses a sponge city drainage system, a sewage drainage system comprises a first sewage drainage pipe and a sewage main pipe, one end of the first sewage drainage pipe is communicated with a downpipe, and the other end of the first sewage drainage pipe is communicated with the sewage main pipe; the purified water drainage system comprises a purified water pipe, a rainwater header pipe and a first control assembly, one end of the purified water pipe communicates with the downpipe through the first control assembly, and the other end of the purified water pipe communicates with the rainwater header pipe; the backwashing system comprises a water storage tank, a second blow-off pipe, a backwashing water pipe and a second control assembly, one end of the water storage tank is communicated with the downpipe through the first control assembly, the other end of the water storage tank is movably communicated with the backwashing water pipe, and the backwashing water pipe is connected with the underbridge pavement through the second control assembly; the other end of the second blow-off pipe is communicated with the sewage header pipe; a liquid inlet of the first blow-off pipe is higher than a liquid inlet of the water purification pipe and a liquid inlet of the water storage tank, so that the utilization rate of rainwater resources is increased, and meanwhile, excessive pressure on the sewage treatment system is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of urban drainage, and in particular to a sponge city drainage system. Background Art

[0002] In the process of building a sponge city, the design of the drainage system is particularly important, especially for some southern cities with frequent rain, the discharge of road water is very critical. When building a sponge city, it is often necessary to collect rainwater and discharge it to a designated location when in use. Since rainwater on the road often carries a large amount of road pollutants when flowing, these rainwaters need to be treated by the sewage treatment system before they can be used. However, if all the rainwater on the road is directly discharged into the sewage treatment system, it will sharply increase the pressure on the urban sewage treatment system, resulting in low efficiency of road rainwater discharge and causing road waterlogging, which not only affects traffic, but also reduces the efficiency of the sponge city in absorbing rainwater. Summary of the invention

[0003] In response to the above technical problems, the present invention proposes a sponge city drainage system, which directly introduces sewage into the sewage main through a sewage pipe. The relatively clean rainwater in the later stage can be collected and reused through the rainwater main, thereby improving the utilization rate of rainwater resources and avoiding excessive pressure on the sewage treatment system.

[0004] The technical solution adopted by the present invention is as follows: a sponge city drainage system, including a downpipe, a sewage system, a clean water system and a backwash system, the sewage system including a first drain pipe and a sewage main pipe, one end of the first drain pipe is connected to the downpipe, and the other end of the first drain pipe is connected to the sewage main pipe; the clean water system includes a clean water pipe, a rainwater main pipe and a first control component, one end of the clean water pipe is connected to the downpipe through the first control component, and the other end of the clean water pipe is connected to the rainwater main pipe; the backwash system includes a water storage tank, a second drain pipe, a backwash water pipe and a second control component, one end of the water storage tank is connected to the downpipe through the first control component, and the other end of the water storage tank is movably connected to the backwash water pipe, the backwash water pipe is connected to the road surface under the bridge through the second control component, one end of the second drain pipe is connected to the road surface under the bridge, and the other end of the second drain pipe is connected to the sewage main pipe; the liquid inlet of the first drain pipe is higher than the liquid inlet of the clean water pipe and the liquid inlet of the water storage tank, respectively.

[0005] Optionally, the first control component includes a double-control valve plate, a water filling pipe and a water storage bucket, one end of the water filling pipe is connected to the downpipe, and the other end of the water filling pipe is arranged corresponding to the liquid inlet of the water storage bucket, the double-control valve plate and the water storage bucket are linked, when the rainwater in the water storage bucket reaches a threshold, the water storage bucket drives the double-control valve plate to move, and the downpipe is respectively connected to the clean water pipe and the water storage tank.

[0006] Optionally, a regulating plate is rotatably provided on the wall of the water tank, and the regulating plate includes a first regulating part and a second regulating part connected to the first regulating part at an angle, the first regulating part is fixedly connected to the water storage bucket, the double-control valve plate is provided with a groove, the free end of the second regulating part is cooperatively connected to the groove, and the free end of the second regulating part is inclined toward the direction close to the water storage bucket.

[0007] Optionally, the tank wall of the water tank is further provided with a support plate and a first elastic member, one end of the first elastic member is connected to the support plate, and the other end of the first elastic member is connected to the first regulating part.

[0008] Optionally, a water leakage port is provided at the bottom of the water storage hopper, and the diameter of the liquid inlet of the water storage hopper is larger than the diameter of the water leakage port.

[0009] Optionally, a through hole is provided at the bottom of the water tank, and a pull rope is connected to the end of the first regulating part away from the water storage bucket. The pull rope passes through the inside of the water tank and the through hole in sequence and is connected to a blocking plate. The blocking plate is movably cooperated with the through hole, and a counterweight is connected to the end of the pull rope away from the regulating plate.

[0010] Optionally, a guide groove is provided at the bottom of the water tank, the blocking plate is movably located in the guide groove, the pull rope passes through the guide groove and is connected to the counterweight block, and the guide groove is connected to the backwash water pipe.

[0011] Optionally, the second control component includes a drain valve plate, a piston and a pressure chamber, the drain valve plate is movably cooperated with the second drain pipe, one end of the piston is movably located in the pressure chamber, and the other end of the piston is connected to the drain valve plate, a second elastic member is provided between the piston and the pressure chamber, and the pressure chamber is connected to the backwash water pipe.

[0012] Optionally, the backwash water pipe is connected to a backwash empty tank, and the top surface of the backwash empty tank is connected to a seepage walkway.

[0013] Optionally, the road surface under the bridge is provided with a sand layer and a permeable blind pipe in sequence, and the permeable blind pipe is connected to the rainwater main pipe.

[0014] The beneficial effects of the present invention are as follows: (1) The water inlet of the downpipe is connected to the elevated road surface. Initially, the first control component and the second control component are closed. There is a lot of dust on the elevated road surface. Under the scouring of rainwater, sewage is formed. The sewage enters the first sewage pipe from the downpipe and flows into the sewage main pipe from the first sewage pipe. After a period of scouring, the dust on the elevated road surface is washed away and the rainwater is relatively clean. The first control component is turned on. Since the liquid inlet of the first sewage pipe is higher than the clean water pipe and the water storage tank, rainwater enters the clean water pipe and the water storage tank and flows into the rainwater main pipe from the clean water pipe. After the rain stops, the second control component is turned on. The relatively clean rainwater in the water storage tank enters the backwash water pipe to backwash the road surface under the elevated bridge. The sewage after backwashing flows into the sewage main pipe from the second sewage pipe. Since the initial rainwater contains more pollutants, it is directly introduced into the sewage main pipe through the sewage pipe. The relatively clean rainwater in the later period can be collected and reused through the rainwater main pipe, thereby improving the utilization rate of rainwater resources and avoiding excessive pressure on the sewage treatment system.

[0015] (2) When the rainwater in the water storage bucket reaches a certain weight, the water storage bucket moves downward, and the other end of the first regulating part drives the second regulating part and the pull rope to move upward, so that the plugging plate blocks the through hole, thereby accumulating rainwater in the water storage tank. When the rain stops, under the action of the leak, the weight of the water storage bucket gradually decreases, and under the downward pulling force of the counterweight block, the water storage bucket rises, and the other end of the first regulating part drives the second regulating part and the pull rope to move downward, and the plugging plate moves away from the through hole, so that the water storage tank is connected to the backwashing water pipe, and the road surface and sidewalk under the bridge are backwashed. The backwashing process is completed using the rainwater in the water storage tank, realizing the recycling of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the sponge city drainage system and the elevated road coordinated with each other according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the sponge city drainage system proposed in an embodiment of the present invention.

[0018] The marks in the accompanying drawings are: 1. downpipe; 2. first sewage pipe; 3. sewage main pipe; 4. clean water pipe; 5. rainwater main pipe; 6. water storage tank; 7. second sewage pipe; 8. backwash water pipe; 9. double-control valve plate; 10. water filling pipe; 11. water storage bucket; 12. first regulating part; 13. second regulating part; 14. rotating shaft; 15. support plate; 16. first elastic member; 17. water leakage; 18. through hole; 19. pull rope; 20. plugging plate; 21. counterweight; 22. guide groove; 23. sewage valve plate; 24. piston; 25. pressure chamber; 26. second elastic member; 27. backwash empty slot; 28. sand layer; 29. ​​seepage blind pipe; 30. elevated road surface; 31. road surface under the bridge; 32. seepage sidewalk. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 and 2 As shown, it includes a downpipe 1, a sewage system, a clean water system and a backwashing system. The sewage system includes a first sewage pipe 2 and a sewage main pipe 3. One end of the first sewage pipe 2 is connected to the downpipe 1, and the other end of the first sewage pipe 2 is connected to the sewage main pipe 3; the clean water system includes a clean water pipe 4, a rainwater main pipe 5 and a first control component. One end of the clean water pipe 4 is connected to the downpipe 1 through the first control component, and the other end of the clean water pipe 4 is connected to the rainwater main pipe 5; the backwashing system includes a water storage pipe The water tank 6 comprises a second sewage pipe 7, a backwashing water pipe 8 and a second control component, wherein one end of the water tank 6 is connected to the downpipe 1 through the first control component, and the other end of the water tank 6 is movably connected to the backwashing water pipe 8. The backwashing water pipe 8 is connected to the road surface 31 under the bridge through the second control component, one end of the second sewage pipe 7 is connected to the road surface 31 under the bridge, and the other end of the second sewage pipe 7 is connected to the sewage main pipe 3; the liquid inlet of the first sewage pipe 2 is higher than the liquid inlet of the clean water pipe 4 and the liquid inlet of the water tank 6. The water inlet of the downpipe 1 is connected to the elevated road surface 30. Initially, the first control component and the second control component are closed. There is a lot of dust on the elevated road surface 30, which is formed by the flushing of rainwater. The sewage enters the first sewage pipe 2 from the downpipe 1 and flows into the sewage main pipe 3 from the first sewage pipe 2; after flushing for a period of time, the dust on the elevated road surface 30 is washed away, and the rainwater is relatively clean. The first control component is turned on. Since the liquid inlet of the first sewage pipe 2 is higher than the clean water pipe 4 and the water storage tank 6, the rainwater enters the clean water pipe 4 and the water storage tank 6, and flows into the rainwater main pipe 5 from the clean water pipe 4. After the rain stops, the second control component is opened, and the relatively clean rainwater in the water storage tank 6 enters the backwash water pipe 8 to backwash the underbridge road surface 31 under the elevated road. The sewage after backwashing flows into the sewage main pipe 3 from the second sewage pipe 7. Since the initial rainwater contains more pollutants, it is directly introduced into the sewage main pipe 3 through the sewage pipe. The cleaner rainwater in the later period can be collected and reused through the rainwater main pipe 5, which improves the utilization rate of rainwater resources and avoids excessive pressure on the sewage treatment system.

[0021] like Figure 2As shown, the first control assembly includes a double-control valve plate 9, a water-adding pipe 10 and a water storage bucket 11. One end of the water-adding pipe 10 is connected to the downpipe 1, and the other end of the water-adding pipe 10 is arranged corresponding to the liquid inlet of the water storage bucket 11. The double-control valve plate 9 and the water storage bucket 11 form a linkage. When the rainwater in the water storage bucket 11 reaches a threshold, the water storage bucket 11 drives the double-control valve plate 9 to move, and the downpipe 1 is respectively connected with the clean water pipe 4 and the water storage tank 6. When it rains, the water-adding pipe 10 continuously adds water to the water storage bucket 11. When the rainwater in the water storage bucket 11 reaches a threshold, the water storage bucket 11 drives the double-control valve plate 9 to move, and the downpipe 1 is respectively connected with the clean water pipe 4 and the water storage tank 6, and the rainwater enters the clean water pipe 4 and the water storage tank 6.

[0022] like Figure 2 As shown, the wall of the water storage tank 6 is rotatably provided with a regulating plate, the regulating plate includes a first regulating part 12 and a second regulating part 13 connected to the first regulating part 12 at an angle, the first regulating part 12 is fixedly connected to the water storage bucket 11, the double control valve plate 9 is provided with a groove, the free end of the second regulating part 13 is matched and connected to the groove, and the free end of the second regulating part 13 is inclined toward the direction close to the water storage bucket 11. The regulating plate is installed on the water storage tank 6 through a rotating shaft 14, the first regulating part 12 and the second regulating part 13 are designed in a V-shaped structure, when the rainwater in the water storage bucket 11 reaches a threshold value, the water storage bucket 11 drives the first regulating part 12 to move downward, and the end of the second regulating part 13 away from the first regulating part 12, i.e., the free end, drives the double control valve plate 9 to move toward the direction of the water storage bucket 11, so that the downpipe 1 is connected with the clean water pipe 4 and the water storage tank 6 respectively. The wall of the water storage tank 6 is also provided with a support plate 15 and a first elastic member 16, one end of the first elastic member 16 is connected to the support plate 15, and the other end of the first elastic member 16 is connected to the first regulating part 12. After the rain stops, the water storage behind the water storage bucket 11 decreases, the weight of the water storage bucket 11 decreases, the water storage bucket 11 rises under the action of the elastic force, the second regulating part 13 descends, and the double control valve plate 9 is reset. A leaking port 17 is provided at the bottom of the water storage bucket 11, and the diameter of the liquid inlet of the water storage bucket 11 is larger than the diameter of the leaking port 17. The water supply pipe 10 transports rainwater from the liquid inlet to the water storage bucket 11, and the diameter of the leaking port 17 is much smaller than the diameter of the water supply pipe 10 and the liquid inlet. When the rain stops, the water storage bucket 11 adjusts its own weight through the leaking port 17.

[0023] like Figure 2As shown, the bottom of the water storage tank 6 is provided with a through hole 18, and the end of the first regulating part 12 away from the water storage bucket 11 is connected to a pull rope 19, and the pull rope 19 passes through the inside of the water storage tank 6 and the through hole 18 in sequence and is connected to a blocking plate 20, and the blocking plate 20 is movably matched with the through hole 18, and the end of the pull rope 19 away from the regulating plate is connected to a counterweight 21. The diameter of the blocking plate 20 is larger than the diameter of the through hole 18. When the rainwater in the water storage bucket 11 reaches a certain weight, the water storage bucket 11 moves downward, and the other end of the first regulating part 12 drives the second regulating part 13 and the pull rope 19 to move upward, so that the blocking plate 20 blocks the through hole 18, thereby accumulating rainwater in the water storage tank 6. When the rain stops, under the action of the water leak 17, the weight of the water bucket 11 gradually decreases, and under the downward pulling force of the counterweight 21, the water bucket 11 rises, and the other end of the first regulating part 12 drives the second regulating part 13 and the pull rope 19 to move downward, and the plugging plate 20 moves away from the through hole 18, so that the water tank 6 is connected with the backwashing water pipe 8, and the road surface 31 under the bridge is backwashed. The bottom of the water tank 6 is provided with a guide groove 22, and the plugging plate 20 is movably located in the guide groove 22. The pull rope 19 passes through the guide groove 22 and is connected to the counterweight 21, and the guide groove 22 is connected with the backwashing water pipe 8. The guide groove 22 guides the movement of the plugging plate 20.

[0024] like Figure 2 As shown, the second control assembly includes a drain valve plate 23, a piston 24 and a pressure chamber 25. The drain valve plate 23 is movably matched with the second drain pipe 7. One end of the piston 24 is movably located in the pressure chamber 25, and the other end of the piston 24 is connected to the drain valve plate 23. A second elastic member 26 is provided between the piston 24 and the pressure chamber 25, and the pressure chamber 25 is connected to the backwash water pipe 8. The piston 24 includes a piston 24 head and a piston 24 rod. The piston 24 head abuts against the second elastic member 26, and the piston 24 rod is connected to the drain valve plate 23. The rainwater in the backwash water pipe 8 squeezes the piston 24 head, compresses the second elastic member 26, and the rainwater washes the road surface 31 under the bridge. The washed rainwater flows into the sewage main pipe 3 from the second drain pipe 7. The backwashing process is completed by using the rainwater in the water storage tank 6, realizing the recycling of water resources. The backwash water pipe 8 is connected to a backwashing empty slot 27, and the top surface of the backwashing empty slot 27 is connected to the seepage sidewalk 32. The water of the backwash water pipe 8 enters the backwash empty slot 27, and is discharged upward through the porous structure on the upper part of the seepage sidewalk 32, thereby backwashing the seepage sidewalk 32 to prevent the seepage sidewalk 32 from being blocked. The underbridge pavement 31 is provided with a sand layer 28 and a seepage blind pipe 29 in sequence, and the seepage blind pipe is connected to the rainwater main pipe 5. During rainfall, the accumulated water on the underbridge pavement 31 and the seepage sidewalk 32 flows down to the channel on the left side of the seepage sidewalk 32, and then passes through the seepage structure of the seepage sidewalk 32, passes through the sand layer 28, enters the seepage blind pipe 29, and enters the rainwater main pipe 5 through the seepage blind pipe 29.

[0025] It is understandable that the specific embodiments described above are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradictions or conflicts. All equivalent structural transformations made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, are similarly included in the protection scope of the present invention.

Claims

1. A sponge city drainage system, characterized in that: It includes a downpipe, a sewage system, a clean water system and a backwash system, wherein the sewage system includes a first sewage pipe and a sewage main pipe, wherein one end of the first sewage pipe is connected to the downpipe, and the other end of the first sewage pipe is connected to the sewage main pipe; The water purification system comprises a water purification pipe, a rainwater main pipe and a first control component, one end of the water purification pipe is connected to the downpipe through the first control component, and the other end of the water purification pipe is connected to the rainwater main pipe; The backwash system comprises a water storage tank, a second sewage pipe, a backwash water pipe and a second control assembly, one end of the water storage tank is connected to the downpipe through the first control assembly, the other end of the water storage tank is movably connected to the backwash water pipe, the backwash water pipe is connected to the road surface under the bridge through the second control assembly, one end of the second sewage pipe is connected to the road surface under the bridge, and the other end of the second sewage pipe is connected to the sewage main pipe; The liquid inlet of the first sewage pipe is respectively higher than the liquid inlet of the water purification pipe and the liquid inlet of the water storage tank.

2. The sponge city drainage system according to claim 1, characterized in that: The first control component includes a double-control valve plate, a water filling pipe and a water storage bucket. One end of the water filling pipe is connected to the downpipe, and the other end of the water filling pipe is arranged corresponding to the liquid inlet of the water storage bucket. The double-control valve plate and the water storage bucket are linked. When the rainwater in the water storage bucket reaches a threshold, the water storage bucket drives the double-control valve plate to move, and the downpipe is respectively connected to the clean water pipe and the water storage tank.

3. The sponge city drainage system according to claim 2, characterized in that: The water tank wall is rotatably provided with a regulating plate, and the regulating plate includes a first regulating part and a second regulating part connected to the first regulating part at an angle, the first regulating part is fixedly connected to the water storage bucket, the double-control valve plate is provided with a groove, the free end of the second regulating part is cooperatively connected to the groove, and the free end of the second regulating part is inclined toward the direction close to the water storage bucket.

4. The sponge city drainage system according to claim 3, characterized in that: The tank wall of the water tank is further provided with a support plate and a first elastic member, one end of the first elastic member is connected to the support plate, and the other end of the first elastic member is connected to the first regulating part.

5. The sponge city drainage system according to claim 2, characterized in that: A water leakage port is arranged at the bottom of the water storage hopper, and the diameter of the liquid inlet of the water storage hopper is larger than the diameter of the water leakage port.

6. The sponge city drainage system according to claim 3, characterized in that: A through hole is provided at the bottom of the water tank, and a pull rope is connected to the end of the first regulating part away from the water storage bucket. The pull rope passes through the inside of the water tank and the through hole in sequence and is connected to a blocking plate. The blocking plate is movably matched with the through hole, and a counterweight is connected to the end of the pull rope away from the regulating plate.

7. The sponge city drainage system according to claim 6, characterized in that: A guide groove is provided at the bottom of the water storage tank, the blocking plate is movably located in the guide groove, the pull rope passes through the guide groove and is connected to the counterweight block, and the guide groove is communicated with the backwash water pipe.

8. The sponge city drainage system according to claim 1, characterized in that: The second control component includes a drain valve plate, a piston and a pressure chamber. The drain valve plate is movably matched with the second drain pipe. One end of the piston is movably located in the pressure chamber, and the other end of the piston is connected to the drain valve plate. A second elastic member is provided between the piston and the pressure chamber, and the pressure chamber is connected to the backwash water pipe.

9. The sponge city drainage system according to claim 1, characterized in that: The backwash water pipe is connected with a backwash empty tank, and the top surface of the backwash empty tank is connected with a water seepage walkway.

10. The sponge city drainage system according to claim 1, characterized in that: The road surface under the bridge is provided with a sand layer and a permeable blind pipe in sequence, and the permeable blind pipe is connected to the rainwater main pipe.

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