Intelligent waterproof and drainage system for sponge city

Abstract

The utility model relates to an intelligent waterproof and drainage system for a sponge city, which comprises a drainage plate laid on a top plate of an underground building, the edge of the drainage plate is communicated with a drainage groove, the drainage groove is communicated with a sedimentation well through a downpipe, and the sedimentation well is communicated with an underground water tank through a sedimentation pipe. A closed transition box is connected between the lower end of the downpipe and the precipitation well, the transition box is communicated with the precipitation well through a transition pipe, a first switch valve is mounted on the transition pipe, and a second switch valve is mounted on the precipitation pipe; an inlet of the water pump is communicated with the transition box through a transition water inlet pipe, a transition water inlet valve is installed on the transition water inlet pipe, the inlet of the water pump is communicated with the underground water box through a main water inlet pipe, a main water inlet valve is installed on the main water inlet pipe, and an outlet of the water pump is communicated with the precipitation well through a precipitation well water outlet pipe. According to the rainwater recycling device, the infiltration speed of rainwater can be controlled, and growth of vegetation is not affected while rainwater recycling is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sponge cities, and in particular to an intelligent drainage system for sponge cities. Background Art

[0002] Sponge city means that the city can adapt to environmental changes and respond to natural disasters like a sponge, and has good "elasticity". It absorbs water, stores water, seeps water, and purifies water when it rains, and releases and utilizes the stored water when needed. In the construction of sponge city, rainwater collection is the most important part. When collecting rainwater, a layer of waterproof board is usually laid on the roof of the building, and then a drainage board is laid on the waterproof board. A drainage trough is connected between the drainage boards, and then a layer of filter cloth is laid on the top of the drainage board and the drainage trough. The top of the filter cloth is covered with soil. Rainwater passes through the filter cloth and enters the drainage board, and then flows into the drainage trough through the water inlet of the drainage trough. The water in the drainage trough enters the sedimentation well through the downpipe for sedimentation and then flows into the underground water tank to realize the utilization of rainwater. For example, the drainage trough can adopt a plug-in seepage drainage trough with the authorization announcement number CN214784517U, and the drainage board can adopt an anti-collapse composite drainage structure with the authorization announcement number CN214531010U.

[0003] For example, the utility model with announcement number CN214272694U discloses a sponge city seepage drainage protection and reuse system, which can collect and reuse rainwater. However, when the rainwater is too heavy, the existing system has a slow rainwater recovery speed, which easily leads to water accumulation on the ground.

[0004] In addition, since the soil above the drainage board is a vegetation planting surface, blindly increasing the infiltration of rainwater will cause the moisture content in the soil to be too low, affecting the growth of vegetation. Therefore, it is necessary to provide an intelligent drainage system to control the infiltration rate of rainwater and ensure rainwater recovery without affecting the growth of vegetation. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and provides a sponge city intelligent drainage system.

[0006] The utility model is realized through the following technical scheme, and provides a sponge city intelligent drainage system, including a drainage board laid on the top board of an underground building, the edge of the drainage board is connected with a drainage groove, the drainage groove is connected with a sedimentation well through a downpipe, the sedimentation well is connected with an underground water tank through a sedimentation pipe, a closed transition box is connected between the lower end of the downpipe and the sedimentation well, the transition box and the sedimentation well are connected through a transition pipe, and a first switch valve is installed on the transition pipe, and a second switch valve is installed on the sedimentation pipe; and also includes a water pump, the inlet of the water pump is connected with the transition box through a transition water inlet pipe, and a transition water inlet valve is installed on the transition water inlet pipe, the inlet of the water pump is connected with the underground water tank through a main water inlet pipe, and a main water inlet valve is installed on the main water inlet pipe, and the outlet of the water pump is connected with the sedimentation well through a sedimentation well outlet pipe, and a sedimentation well outlet valve is installed on the sedimentation well outlet pipe.

[0007] In this scheme, rainwater passes through the filter cloth into the drain board, and then flows into the drain trough through the water inlet of the drain trough. Then, the rainwater in the drain trough flows through the downpipe through the transition box and enters the sedimentation well. When it is necessary to quickly recycle rainwater in the soil, close the first switch valve, open the transition water inlet valve and the sedimentation well outlet valve, and the water pump pumps the water in the transition box into the sedimentation well, so that negative pressure is formed in the transition box, which also forms negative pressure at the drain board, thereby increasing the filtering and infiltration speed of rainwater. When it is necessary to reduce the rainwater recovery speed and keep the rainwater in the soil, close the second switch valve, open the main water inlet valve and the sedimentation well outlet valve, and the water pump pumps the water in the underground water tank into the sedimentation well, so that the liquid level of the sedimentation well is higher than the drain board. At this time, rainwater will not infiltrate through the filter cloth, thereby increasing the water content in the soil and ensuring the growth needs of vegetation.

[0008] As an optimization, the outlet of the water pump is connected to a main water outlet pipe for pumping water out of the underground water tank for reuse.

[0009] As an optimization, a liquid level meter is installed in the sedimentation well. The liquid level meter in this scheme is used to detect the liquid level of the sedimentation well.

[0010] As an optimization, a vertical diameter-changing section is provided on the downpipe, and the diameter of the diameter-changing section is smaller than the diameter of the upper end of the downpipe. The siphon effect is achieved by providing the diameter-changing section, thereby increasing the speed at which rainwater passes through the filter cloth.

[0011] As an optimization, the upper end of the sedimentation well extends to the ground and is equipped with a ventilated well cover, so that the liquid level in the sedimentation well can be higher than the drainage board.

[0012] As an optimization, the volume of the transition box is 0.5-1 cubic meter.

[0013] The beneficial effects of the utility model are as follows: the sponge city intelligent drainage system of the utility model can control the infiltration rate of rainwater, ensure rainwater recycling, and not affect the growth of vegetation. It also utilizes existing water pumps to achieve this, with little increase in cost, and can achieve intelligent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] As shown in the figure:

[0016] 1. Drain board, 2. Drain trough, 3. Downpipe, 4. Underground building roof, 5. Transition box, 6. Sedimentation well, 7. Underground water tank, 8. First switch valve, 9. Second switch valve, 10. Water pump, 11. Transition inlet pipe, 12. Transition inlet valve, 13. Main inlet pipe, 14. Main inlet valve, 15. Sedimentation well outlet pipe, 16. Sedimentation well outlet valve, 17. Main outlet pipe, 18. Liquid level meter. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0018] like Figure 1 As shown, the utility model is a sponge city intelligent drainage system, including a drainage board 1 laid on the top plate 4 of an underground building, the edge of the drainage board 1 is connected with a drainage trough 2, the drainage trough 2 is connected with a sedimentation well 6 through a downpipe 3, the sedimentation well 6 is connected with an underground water tank 7 through a sedimentation pipe, and a second switch valve 9 is installed on the sedimentation pipe, and the second switch valve 9 is an electrically controlled valve.

[0019] The drain board 1 is covered with soil, and a layer of filter cloth is laid on the drain board 1 and the drain trough 2. Rainwater passes through the filter cloth and enters the drain board 1, and then flows into the drain trough 2 through the water inlet of the drain trough 2. Then the rainwater in the drain trough 2 enters the sedimentation well 9 for sedimentation. The precipitated rainwater flows into the underground water tank through the sedimentation pipe for storage and reuse.

[0020] A sealed transition box 5 is connected between the lower end of the downpipe 3 and the sedimentation well 6, and the volume of the transition box 5 is 0.5-1 cubic meter. The transition box 5 and the sedimentation well 6 are connected through a transition pipe, and a first switch valve 8 is installed on the transition pipe, and the first switch valve 8 is an electrically controlled valve.

[0021] The upper end of the downpipe 3 is connected to the drainage trough 2, and the lower end is connected to the transition box 5. The downpipe 3 is provided with a vertical variable diameter section, and the diameter of the variable diameter section is smaller than the diameter of the upper end of the downpipe 3, thereby forming an existing commonly used variable diameter siphon pipe, and its working principle adopts the siphon principle. It is well known that when a vertical pipe is filled with water and the water flows downward, a negative pressure will be formed above the water, and a siphon effect will appear. If the pipe diameter is large, the water cannot fill the pipe, and the siphon effect will not occur. Therefore, in the field of seepage and drainage, a variable diameter pipe is often used to achieve siphoning. The diameter of the lower end of the variable diameter pipe becomes smaller, and the water fills the small diameter pipe to achieve siphoning. When the water fills the small diameter pipe and flows downward, negative pressure appears in the large diameter pipe above, and at the same time, the water seepage speed of the filter cloth used to filter water on the drainage board is increased, thereby increasing the water discharge speed. This is a commonly used setting in the prior art.

[0022] It also includes a water pump 10, which is arranged on the ground for easy maintenance and installation. The inlet of the water pump 10 is connected to the transition box 5 through a transition water inlet pipe 11, and a transition water inlet valve 12 is installed on the transition water inlet pipe 11. The inlet of the water pump 10 is connected to the underground water tank 7 through a main water inlet pipe 13, and a main water inlet valve 14 is installed on the main water inlet pipe 13. Both the transition water inlet valve 12 and the main water inlet valve 14 are electrically controlled valves.

[0023] The outlet of the water pump 10 is communicated with the sedimentation well 6 through the sedimentation well outlet pipe 15, and a sedimentation well outlet valve 16 is installed on the sedimentation well outlet pipe 15. The sedimentation well outlet valve 16 is also an electric control valve.

[0024] The outlet of the water pump 10 is connected to a main water outlet pipe 17. The water in the underground water tank 7 is pumped out through the main water outlet pipe 17 for utilization.

[0025] The upper end of the sedimentation well 6 extends to the ground and is equipped with a ventilated well cover. A liquid level gauge 18 is installed in the sedimentation well 6 to detect the internal liquid level.

[0026] The method of using the utility model is as follows: a layer of filter cloth is laid above the drainage board 1 and the drainage trough 2, rainwater passes through the filter cloth and enters the drainage board 1, and then flows into the drainage trough 2 through the water inlet of the drainage trough 2, and then the rainwater in the drainage trough 2 flows through the downpipe 3 and the transition box 5 and then enters the sedimentation well 6, and the rainwater after sedimentation in the sedimentation well 6 flows into the underground water tank 7 through the sedimentation pipe for storage and reuse.

[0027] When it is necessary to quickly recover rainwater in the soil, close the first switch valve 8, open the transition water inlet valve 12 and the sedimentation well outlet valve 16, and the water pump 10 pumps the water in the transition box 5 into the sedimentation well 6, thereby forming a negative pressure in the transition box 5, and also forming a negative pressure at the drainage board 1, thereby increasing the filtering and infiltration speed of rainwater.

[0028] When it is necessary to reduce the rainwater recovery rate and retain the rainwater in the soil, close the second switch valve 9, open the main water inlet valve 14 and the sedimentation well outlet valve 16, and the water pump 10 pumps the water in the underground water tank 7 into the sedimentation well 6, so that the liquid level of the sedimentation well 6 is higher than the drainage board 1. At this time, the rainwater will not seep through the filter cloth. The liquid level meter 18 is used to detect the liquid level of the sedimentation well 6, so that it is higher than the drainage board 1, thereby increasing the water content in the soil and ensuring the growth needs of vegetation.

[0029] When the stored water in the underground water tank 7 is to be used, the main water inlet valve 14 and the water pump 10 are opened to pump the water in the underground water tank 7 out through the main water outlet pipe 17 for use.

[0030] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A sponge city intelligent drainage system, comprising a drainage board (1) laid on an underground building roof (4), the edge of the drainage board (1) being connected to a drainage groove (2), the drainage groove (2) being connected to a sedimentation well (6) through a downpipe (3), the sedimentation well (6) being connected to an underground water tank (7) through a sedimentation pipe, characterized in that: A sealed transition box (5) is connected between the lower end of the downpipe (3) and the sedimentation well (6); the transition box (5) and the sedimentation well (6) are connected via a transition pipe and a first switch valve (8) is installed on the transition pipe; and a second switch valve (9) is installed on the sedimentation pipe; It also includes a water pump (10), the inlet of the water pump (10) is connected to the transition box (5) through a transition water inlet pipe (11), and the transition water inlet pipe (11) is equipped with a transition water inlet valve (12), the inlet of the water pump (10) is connected to the underground water tank (7) through a main water inlet pipe (13), and the main water inlet pipe (13) is equipped with a main water inlet valve (14), and the outlet of the water pump (10) is connected to the sedimentation well (6) through a sedimentation well outlet pipe (15), and the sedimentation well outlet pipe (15) is equipped with a sedimentation well outlet valve (16).

2. The intelligent drainage system for sponge cities according to claim 1 is characterized in that: The outlet of the water pump (10) is connected to a main water outlet pipe (17).

3. The intelligent drainage system for sponge cities according to claim 1 is characterized in that: The sedimentation well (6) is provided with a liquid level meter (18).

4. The intelligent drainage system for sponge cities according to claim 1 is characterized in that: The downpipe (3) is provided with a vertical diameter-changing section, the diameter of the diameter-changing section being smaller than the diameter of the upper end of the downpipe (3).

5. The intelligent drainage system for sponge cities according to claim 1 is characterized in that: The upper end of the sedimentation well (6) extends to the ground and is equipped with a ventilated well cover.

6. The intelligent drainage system for sponge cities according to claim 1 is characterized in that: The volume of the transition box (5) is 0.5-1 cubic meter.

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