Anti-waterlogging drainage system for sponge city

Abstract

The utility model discloses a sponge city waterlogging prevention drainage system which comprises a drainage ditch and an underground drainage pipeline which are communicated, a plurality of water storage tanks are arranged below the drainage ditch at intervals in the length direction of the drainage ditch, the interior of each water storage tank is divided into an upper tank body and a lower tank body through a transverse plate, and the upper tank bodies of every two adjacent water storage tanks are communicated through a transverse pipe. The transverse pipe is provided with a control valve, the transverse plate is provided with a communicating pipe for communicating the upper box body and the lower box body, the communicating pipe is provided with a communicating valve, the drainage ditch is communicated with the upper box body through a first dredging pipe, the drainage ditch is communicated with the lower box body through a second dredging pipe, and the first dredging pipe and the second dredging pipe are both provided with valves. A sedimentation tank is arranged on one side of the drainage ditch, a stirrer is arranged at the bottom in the lower box body, the bottom of the lower box body is communicated with the sedimentation tank through a blow-off pipe, and a sewage pump is arranged on the blow-off pipe. In conclusion, the drainage device has the advantages of being high in drainage efficiency, not prone to water accumulation and good in drainage effect.

Description

Technical Field

[0001] This utility model relates to the field of urban flood control and drainage technology, specifically to a sponge city flood control and drainage system. Background Technology

[0002] A sponge city is a city that, like a sponge, has good resilience in adapting to environmental changes and coping with natural disasters caused by rainwater. It can also be called a "water-resilient city." The construction of sponge cities should follow the principles of ecological priority, combining natural methods with artificial measures. Under the premise of ensuring urban drainage and flood control safety, it should maximize the accumulation, infiltration and purification of rainwater in urban areas, and promote the utilization of rainwater resources and ecological environmental protection.

[0003] With extreme weather becoming increasingly frequent, severe urban flooding during heavy rains disrupts people's daily lives. Current technologies often alleviate flooding by storing rainwater in tanks. These tanks store rainwater, which can then be released for reuse when needed, easing urban flooding pressure. Rainwater can also be used for municipal purposes such as landscaping, road cleaning, and dust suppression. However, several problems remain: First, rainwater contains sediment. Although filtered, a sediment layer still forms at the bottom of the tank after sedimentation, requiring regular cleaning, which is cumbersome. Second, the system's drainage capacity is limited. During heavy rainfall, the average hourly drainage volume is less than the rainfall volume due to pipe capacity limitations, failing to drain the rainwater promptly and leading to urban flooding. Therefore, developing a sponge city flood control and drainage system with high drainage efficiency, minimal water accumulation, and effective drainage is objectively necessary. Utility Model Content

[0004] The purpose of this invention is to provide a sponge city flood control and drainage system that has high drainage efficiency, is not prone to water accumulation, and has good drainage effect.

[0005] The purpose of this utility model is achieved as follows: it includes a connected drainage ditch and an underground drainage pipe. Several water storage tanks are spaced apart along the length of the drainage ditch. The interior of each water storage tank is divided into an upper tank and a lower tank by a horizontal plate. The upper tanks of two adjacent water storage tanks are connected by a horizontal pipe. A control valve is installed on the horizontal pipe. A connecting pipe connecting the upper tank and the lower tank is installed on the horizontal plate. A connecting valve is installed on the connecting pipe. The drainage pipe is connected to the upper tank through a first unblocking pipe and to the lower tank through a second unblocking pipe. Valves are installed on both the first and second unblocking pipes. A sedimentation tank is installed on one side of the drainage ditch. An agitator is installed at the bottom of the lower tank. The bottom of the lower tank is connected to the sedimentation tank through a sewage pipe. A sewage pump is installed on the sewage pipe.

[0006] Furthermore, the horizontal tube is provided with several water-permeable holes, and filter cloth is provided on the water-permeable holes.

[0007] Furthermore, a solar panel and a battery are installed on one side of the drainage ditch, and the battery is connected to the agitator and the sewage pump via wiring.

[0008] Furthermore, the upper part of the sedimentation tank is connected to the drainage ditch via a return pipe.

[0009] Furthermore, a rain grate is installed at the top of the drainage ditch, and the drainage ditch is filled with filter media.

[0010] Furthermore, liquid level detectors are installed in the drainage ditch, upper tank, and lower tank.

[0011] This invention incorporates a stirrer within the lower compartment of a water storage tank. When cleaning is required, water is drained from the tank, leaving only a small amount. The stirrer is then activated, dispersing the sludge deposited at the bottom of the lower compartment and thoroughly mixing the sludge and water to create a certain concentration of wastewater. This improves the fluidity of the sediment, facilitating subsequent discharge. A wastewater pump is then started to pump the wastewater through a drain pipe to a sedimentation tank for separation. This method effectively cleans the sludge and sediment from the water storage tank. The operation is simple, maintaining the normal water level and preventing it from decreasing due to sludge accumulation. The sludge and sediment are pumped to the sedimentation tank for treatment, reducing processing difficulty and improving efficiency. Furthermore, during operation, when rainfall is light and does not exceed the drainage capacity of the underground drainage pipes, rainwater collected in the drainage ditch can be directly discharged into the underground drainage pipes. Simultaneously, the connecting valve on the connecting pipe can be opened to allow the upper compartment to drain. The upper and lower tanks are connected as a whole, forming a large-capacity water storage space. Rainwater is delivered to this storage space through the first and second drainage pipes for storage. When needed, it can be used as municipal water for purposes such as landscaping, road washing, and dust suppression. Conversely, when there is heavy rainfall, exceeding the drainage capacity of the underground drainage pipes, the connecting valve on the connecting pipe is closed, separating the upper and lower tanks into two independent spaces. The upper tanks of several storage tanks are connected by horizontal pipes, effectively forming a new drainage pipe. Some rainwater from the drainage ditch is sent to the upper tank through the first drainage pipe, relieving the drainage pressure of the underground drainage pipes. At the same time, some rainwater from the drainage ditch can be sent to the lower tank for storage through the second drainage pipe. In this way, the drainage capacity of the urban drainage network is increased, solving the problem of the limited capacity of underground drainage pipes, significantly increasing the drainage speed and efficiency, thereby draining rainwater in a timely manner, avoiding urban waterlogging, and preventing urban flooding. In summary, this utility model has the advantages of high drainage efficiency, low water accumulation, and good drainage effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure between the water storage tanks 3 in this utility model;

[0014] In the diagram: 1-Drainage ditch, 2-Underground drainage pipe, 3-Water storage tank, 4-Upper tank, 5-Lower tank, 6-Horizontal pipe, 7-Connecting pipe, 8-First dredging pipe, 9-Second dredging pipe, 10-Sedimentation tank, 11-Agitator, 12-Sewage pipe, 13-Sewage pump, 14-Filter cloth, 15-Solar panel, 16-Battery, 17-Return pipe, 18-Filter media, 19-Level detector. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.

[0016] like Figures 1-2As shown, this utility model includes a connected drainage ditch 1 and an underground drainage pipe 2. Both the drainage ditch 1 and the underground drainage pipe 2 are existing drainage facilities. The drainage ditch 1 is usually set on both sides of the road to drain water from the road surface, and can also be set at other locations as needed. The underground drainage pipe 2 is an urban drainage network system used to drain water from the city. Generally, to prevent urban flooding, excess water in the city is drained to rivers or low-lying areas far from the city. Several water storage tanks 3 are spaced along the length of the drainage ditch 1. The water storage tanks 3 are set in different locations to facilitate nearby water use in various places and to significantly increase the water storage capacity. The interior of the water storage tank 3 is divided into an upper tank 4 and a lower tank 5 by a horizontal plate. The upper tanks 4 of two adjacent water storage tanks 3 are connected by a horizontal pipe 6. A control valve is set on the horizontal pipe 6. When the control valve is opened, all water storage tanks 3 are connected, effectively forming a new drainage pipe, improving the drainage capacity of the urban drainage network, and draining more water in the same amount of time to prevent urban flooding. For flood control, a connecting pipe 7 is installed on the horizontal plate, connecting the upper box 4 and the lower box 5. A connecting valve is installed on the connecting pipe 7. When the connecting valve is opened, the upper box 4 and the lower box 5 are connected as a whole, with a large water storage space, capable of storing a large amount of accumulated water. Drainage ditch 1 is connected to the upper box 4 through a first unblocking pipe 8, and to the lower box 5 through a second unblocking pipe 9. Valves are installed on both the first unblocking pipe 8 and the second unblocking pipe 9. A sedimentation tank 10 is installed on one side of drainage ditch 1. The sedimentation tank 10 is existing equipment and can be installed on the ground. The surface is used for sedimentation treatment of sewage. Compared with the underground water storage tank 3, it is more convenient and faster to treat sewage, and it is also safer and requires less labor intensity for workers. The bottom of the lower tank 5 is equipped with a stirrer 11. The stirrer 11 is an existing device used to stir the sediment at the bottom of the lower tank 5, disperse it, and mix it with water to form sewage, which is easy to pump to the sedimentation tank 10 for sedimentation treatment. The bottom of the lower tank 5 is connected to the sedimentation tank 10 through the sewage pipe 12, and a sewage pump 13 is installed on the sewage pipe 12.

[0017] This invention incorporates a stirrer 11 within the lower tank 5 of the water storage tank 3. When sewage needs to be discharged, the water in the storage tank 3 is appropriately drained, leaving only a small amount of water. Then, the stirrer 11 is activated, which disperses the sludge deposited at the bottom of the lower tank 5, ensuring thorough mixing of the sludge and water to form a certain concentration of wastewater. This allows the sediment to have good fluidity, facilitating subsequent discharge. The wastewater pump 13 is then activated to pump the wastewater through the drain pipe 12 to the sedimentation tank 10 for sedimentation and separation. This method effectively cleans the sludge and dirt inside the water storage tank 3. The operation is relatively simple, maintaining the normal water storage capacity inside the water storage tank 3 and preventing the water storage capacity from decreasing due to the accumulation of sludge. The sludge and dirt are pumped to the sedimentation tank 10 for treatment, reducing the difficulty of treatment and improving the treatment efficiency.

[0018] Secondly, when this invention is in operation, if the rainfall is light and does not exceed the drainage capacity of the underground drainage pipe 2, the rainwater collected in the drainage ditch 1 can be directly discharged into the underground drainage pipe 2, where it can be drained away. Simultaneously, the connecting valve on the connecting pipe 7 can be opened to connect the upper box 4 and the lower box 5 into a single unit, forming a large-capacity water storage space. Rainwater is then sent into this storage space through the first unblocking pipe 8 and the second unblocking pipe 9 for storage. When needed, the rainwater can be used as municipal water for purposes such as landscaping, road cleaning, and dust suppression. Conversely, when the rainfall is heavy and exceeds the drainage capacity of the underground drainage pipe 2, the connecting pipe 7 can be closed. The connecting valve separates the upper tank 4 and the lower tank 5 into two independent spaces. The upper tanks 4 of several water storage tanks 3 are connected by horizontal pipes 6, which actually form a new drainage pipe. Some of the rainwater in the drainage ditch 1 is sent to the upper tank 4 through the first dredging pipe 8 to share the drainage pressure of the underground drainage pipe 2. At the same time, some of the rainwater in the drainage ditch 1 can also be sent to the lower tank 5 for storage through the second dredging pipe 9. In this way, the drainage capacity of the urban drainage network is increased, the capacity limitation of the underground drainage pipe 2 is solved, the drainage speed and efficiency are greatly increased, and rainwater is drained away in time, avoiding urban waterlogging and preventing urban flooding.

[0019] The horizontal pipe 6 is provided with several water permeable holes, and filter cloth 14 is provided on the water permeable holes. The accumulated water enters the water storage tank 3 for storage, and some of the accumulated water will enter the horizontal pipe 6 and seep into the surrounding soil along the water permeable holes, providing water for urban green space, so that the roots of green plants can absorb sufficient water, reduce the water use of urban green space, and improve the utilization rate of rainwater.

[0020] A solar panel 15 and a battery 16 are installed on one side of the drainage ditch 1. The battery 16 is connected to the agitator 11 and the sewage pump 13 via wiring. The solar panel 15 is used to absorb solar energy and convert it into electrical energy, while the battery 16 is used to store electrical energy to power the agitator 11, sewage pump 13 and other electrical equipment. When there is excess power, it can also provide power to street lights and other electrical facilities without consuming additional electrical energy, thus reducing the amount of electrical energy used and achieving energy saving.

[0021] The upper part of the sedimentation tank 10 is connected to the drainage ditch 1 through the return pipe 17. The sewage in the water storage tank 3 is sent into the sedimentation tank 10 for sedimentation, forming a lower sand and gravel sedimentation layer and an upper clear water layer. The clear water is sent into the drainage ditch 1 through the return pipe 17 to facilitate the cleaning of the sediment. At the same time, the clear water can also be used as municipal water for greening irrigation, road dust removal and cooling. After the sedimentation tank 10 is emptied, it is convenient for subsequent sewage sedimentation.

[0022] A rain grate is installed at the upper end of the drainage ditch 1, and the drainage ditch 1 is filled with filter media 18. The rain grate is used to filter large particles such as leaves and garbage from the rainwater, while the filter media 18 can be made of materials that can filter water, such as gravel and activated carbon, to further filter the rainwater, reduce impurities such as mud and sand in the rainwater, improve water quality, prevent blockage of the drainage pipes, and reduce the sedimentation of impurities in the drainage pipes.

[0023] Liquid level detectors 19 are installed in drainage ditch 1, upper tank 4, and lower tank 5. The liquid level detectors 19 are existing liquid level detection instruments that can detect the liquid level in drainage ditch 1, upper tank 4, and lower tank 5 in real time. When the liquid level in drainage ditch 1 is high, it indicates that the rainfall is large and the underground drainage pipe 2 cannot drain the water in time. Conversely, when the liquid level in drainage ditch 1 is low and relatively stable, it indicates that the rainfall is small and the underground drainage pipe 2 can meet the drainage needs of the water. The liquid level detectors 19 in upper tank 4 and lower tank 5 are used to detect the water level height inside them to control the water storage in storage tank 3. When the liquid level in lower tank 5 is low, it indicates that the water storage is small and the water storage can be appropriately replenished to meet the usage needs. When the liquid level in upper tank 5 is high, it indicates that the water storage is large.

Claims

1. A sponge city flood control and drainage system, comprising a connected drainage ditch (1) and an underground drainage pipe (2), characterized in that: Below the drainage ditch (1), several water storage tanks (3) are spaced apart along its length. The interior of each water storage tank (3) is divided into an upper tank (4) and a lower tank (5) by a horizontal plate. The upper tanks (4) of two adjacent water storage tanks (3) are connected by a horizontal pipe (6). A control valve is installed on the horizontal pipe (6). A connecting pipe (7) is installed on the horizontal plate to connect the upper tank (4) and the lower tank (5). A connecting valve is installed on the connecting pipe (7). The drainage ditch (1) is connected to the first The unblocking pipe (8) is connected to the upper box (4), the drainage ditch (1) is connected to the lower box (5) through the second unblocking pipe (9), and valves are installed on both the first unblocking pipe (8) and the second unblocking pipe (9). A sedimentation tank (10) is installed on one side of the drainage ditch (1), and an agitator (11) is installed at the bottom of the lower box (5). The bottom of the lower box (5) is connected to the sedimentation tank (10) through the sewage pipe (12), and a sewage pump (13) is installed on the sewage pipe (12).

2. The sponge city flood control and drainage system according to claim 1, characterized in that: The horizontal tube (6) is provided with several water-permeable holes, and filter cloth (14) is provided on the water-permeable holes.

3. The sponge city flood control and drainage system according to claim 1, characterized in that: A solar panel (15) and a battery (16) are installed on one side of the drainage ditch (1). The battery (16) is connected to the agitator (11) and the sewage pump (13) respectively via lines.

4. The sponge city flood control and drainage system according to claim 1, characterized in that: The upper part of the sedimentation tank (10) is connected to the drainage ditch (1) through the return pipe (17).

5. A sponge city flood control and drainage system according to claim 1, characterized in that: The upper end of the drainage ditch (1) is provided with a rain grate, and the drainage ditch (1) is filled with filter filler (18).

6. A sponge city flood control and drainage system according to claim 1, characterized in that: Liquid level detectors (19) are installed in the drainage ditch (1), the upper box (4) and the lower box (5).

Images