Road drainage device integrating seepage and drainage

Abstract

The application belongs to the technical field of urban drainage, and discloses a road drainage device integrating seepage and drainage, which comprises a water collecting well, a top end of which is provided with a hollow well lid, a filter basket and a filter barrel are arranged below the well lid from top to bottom, and the bottom of the water collecting well is provided with a water-permeable foundation; an inspection well is arranged downstream of the water collecting well, a water outlet pipe is connected downstream of the inspection well, a spillway is connected between the water collecting well and the inspection well, and a plurality of seepage holes are arranged in the lower part of the water outlet pipe and / or the spillway. According to the application, part of rainwater is seeped and supplemented to underground water through the seepage holes in the bottom of the water collecting well and the lower part of the spillway and the water outlet pipe, rainwater recycling can be realized, and rainwater resources can be avoided from being wasted.

Description

Technical Field

[0001] This utility model belongs to the field of urban drainage technology, specifically, it relates to a road drainage device that integrates infiltration and drainage. Background Technology

[0002] Stormwater drainage systems are underground pipe networks specifically designed for collecting, transporting, and discharging rainwater and surface runoff within urban or building drainage systems. They are a core component of flood control, environmental protection, and municipal infrastructure. Their core functions include flood control and drainage, protection of buildings and infrastructure, and improvement of environmental sanitation. They can also collect and utilize rainwater: directing it to reservoirs or constructed wetlands for greening irrigation and landscape water replenishment (green infrastructure).

[0003] Typically, rainwater pipes are laid at a certain slope, allowing rainwater to be discharged unpressurized into rainwater storage tanks or river outlets. If rainwater is discharged directly into storage tanks, suspended solids in the rainwater will take a long time to settle. Furthermore, rainwater storage tanks require the construction of pumping stations, equipment rooms, chemical dosing rooms, and other buildings, resulting in a large land area. Conversely, if rainwater is discharged directly into rivers, rainwater reuse is impossible, leading to a waste of rainwater resources. Utility Model Content

[0004] Currently, rainwater is directly discharged and cannot be reused, resulting in a waste of rainwater resources. Furthermore, the large discharge volume leads to relatively high pipe and elevation requirements, increasing project costs. This application addresses this issue by installing infiltration holes in the pipes of both the collection well and inspection well. This replenishes groundwater and reduces rainwater discharge, thereby eliminating the need for a stormwater storage tank and reducing pipe diameter and elevation, ultimately lowering project costs.

[0005] The technical solution adopted in this application is as follows:

[0006] A road drainage device integrating infiltration and drainage, comprising:

[0007] The water collection well has a perforated well cover at the top, and a filter basket and a filter bucket are installed below the well cover from top to bottom. The bottom of the water collection well has a permeable foundation.

[0008] An inspection well is located downstream of the water collection well, and a water outlet pipe is connected to the inspection well in the downstream direction.

[0009] An overflow pipe is connected between the water collection well and the inspection well, and multiple permeation holes are provided at the lower part of the water outlet pipe and / or the overflow pipe.

[0010] Optionally, an inlet pipe is connected upstream of the inspection well, and the inlet pipe is connected to the domestic sewage pipe treated by the sewage treatment plant.

[0011] Optionally, the lower part of the water inlet pipe is provided with multiple permeation holes.

[0012] Optionally, a first filter screen is provided above the water permeability, the filter holes of the first filter screen being smaller than the filter holes of the filter barrel.

[0013] Optionally, a second filter screen is provided at the junction of the water inlet pipe and the inspection well, the junction of the water outlet pipe and the inspection well, and the junction of the overflow pipe and the inspection well.

[0014] Optionally, the filter basket and filter bucket are suspended below the manhole cover.

[0015] Optionally, the water collection wells are located on both sides of the road.

[0016] Optionally, a valve may be installed on the water inlet pipe.

[0017] This utility model has the following beneficial effects:

[0018] (1) Existing technology discharges all rainwater into the river, resulting in a large amount of rainwater discharge. This application uses the first filter screen at the bottom of the water collection well and the permeable foundation, as well as the infiltration holes at the bottom of the overflow pipe and the outlet pipe, to infiltrate part of the rainwater to replenish the groundwater, thereby realizing rainwater reuse and avoiding the waste of rainwater resources.

[0019] (2) Existing technology discharges rainwater to a storage tank first, which requires the construction of pumping stations, equipment rooms, chemical dosing rooms and other buildings. In this application, because some rainwater infiltrates to replenish groundwater, the amount of rainwater discharged is reduced, and there is no need to build a storage tank. This reduces the number of pumping stations, equipment rooms, chemical dosing rooms and other buildings required for the storage tank, and significantly reduces the project cost.

[0020] (3) Existing technology discharges all rainwater into the river, resulting in a large amount of rainwater discharge. This makes the elevation and diameter of the pipes larger. In contrast, some of the rainwater infiltrates into the ground in this application, reducing the amount of rainwater that needs to flow downstream from the pipes. This can reduce the diameter and elevation of each pipe, further reducing the project cost.

[0021] (4) This application uses multiple filters such as filter basket, filter barrel, first filter screen and second filter screen to intercept particulate impurities in water, thereby improving the quality of discharged water and reducing the pressure and cost of downstream rainwater treatment.

[0022] (5) The filter barrel and filter basket are easy to install, which facilitates dredging and replacement and reduces operation and maintenance costs;

[0023] (6) This application discharges domestic sewage treated by the sewage treatment plant into the inspection well, and flows into the downstream discharge pipe together with the rainwater. Infiltration holes are set in the inlet pipe to further replenish the groundwater with the treated domestic sewage and enrich the groundwater volume. Attached Figure Description

[0024] The above-described features and technical advantages of this utility model will become clearer and easier to understand by referring to the following description of its embodiments in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of a road drainage device integrating seepage and drainage according to an embodiment of this application.

[0026] Attached reference numerals: 1. Second filter screen; 2. Well cover; 3. Filter basket; 4. Filter barrel; 5. Water collection well; 6. Permeable foundation; 7. First filter screen; 8. Inlet pipe; 9. Inspection well; 10. Outlet pipe; 11. Overflow pipe; 12. Infiltration hole. Detailed Implementation

[0027] The embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in this specification, the drawings are not drawn to scale, and the same reference numerals denote the same parts.

[0028] Current technology discharges all rainwater into rivers, resulting in large volumes of rainwater that require high pipe diameters and elevations. If the rainwater were discharged into storage tanks, pumping stations, equipment rooms, and chemical dosing rooms would be necessary, all of which increase construction costs. Furthermore, the rainwater cannot be reused, leading to a waste of rainwater resources.

[0029] This application utilizes the first filter screen at the bottom of the collection well and the permeable foundation, as well as the permeable holes at the bottom of the overflow pipe, inlet pipe, and outlet pipe to allow some rainwater to infiltrate and replenish groundwater, thus enabling rainwater reuse and avoiding waste of rainwater resources. Moreover, it reduces the amount of rainwater discharged, eliminates the need to build a regulating reservoir, and reduces the need for buildings such as pump stations, equipment rooms, and chemical dosing rooms associated with the reservoir, thereby significantly reducing project costs.

[0030] The road drainage device integrating infiltration and drainage of this application includes a water collection well 5 for collecting rainwater from the road surface; and an inspection well 9 located downstream of the water collection well 5, which, while guiding rainwater into the downstream drainage pipe, also infiltrates rainwater into the ground through infiltration holes on the pipe connected to the inspection well to replenish groundwater.

[0031] The water collection well 5 is located upstream of the inspection well 9 along the water flow direction. A cover 2 is installed at the top of the water collection well 5, covering its top. The cover 2 has a perforated structure, for example, it can have multiple parallel strip-shaped perforations to allow rainwater to enter the water collection well. The cover 2 can initially filter out larger debris, such as paper cups and plastic bottles. The cover 2 can be made of metal, or high-strength materials such as plastic or composite materials.

[0032] Water collection wells can be installed on both sides of the road to collect road drainage. Specifically, roads are usually high in the middle and low on both sides. Water collection wells can be installed on both sides of the road next to the curb. When it rains, rainwater flows to both sides of the road and into the water collection wells.

[0033] Inside the water collection well 5, a filter basket 3 and a filter bucket 4 are arranged from top to bottom below the well cover 2, and the filter basket 3 and the filter bucket 4 can be arranged at a certain distance.

[0034] The filter basket 3 is an open basket shape with filter holes on all sides and the bottom for separating solids and liquids, but its filtration effect on fine particles is limited. The filter bucket is a barrel-shaped container with more densely packed filter holes on all sides and the bottom than the filter basket, allowing for further filtration of finer particles. Both the filter basket 3 and the filter bucket 4 can be suspended under the manhole cover for easy replacement. Alternatively, they can be installed under the manhole cover or on the wall of the collection well using methods such as snap-fit ​​or fastener connection.

[0035] A first filter screen 7 is installed at the bottom of the collection well 5. The filter holes of the first filter screen 7 are smaller than those of the filter barrel 4. That is, the filter holes of the filter basket 3, filter barrel 4, and first filter screen 7 decrease in size sequentially, thereby filtering particles in rainwater step by step. A permeable foundation 6 is installed below the first filter screen 7. The permeable foundation 6 is laid with permeable materials. For example, the permeable foundation can be a gravel layer, a sand layer, geotextile, etc. Rainwater filtered by the first filter screen 7 flows into the ground through the permeable foundation 6.

[0036] An overflow pipe 11 is connected to the side wall of the water collection well 5. The overflow pipe 11 is horizontal or approximately horizontal, with one end connected to the water collection well 5 and the other end connected to the upper part of the inspection well. Rainwater in the water collection well 5 is filtered by the filter basket 3 and filter barrel 4, and then further filtered by settling on the first filter screen 7. Water reaching the height of the overflow pipe 11 then enters the inspection well 9 through the overflow pipe 11. Furthermore, a second filter screen 1 can be installed at the end of the overflow pipe 11 connected to the inspection well 9, allowing rainwater to be further filtered before entering the inspection well 9.

[0037] The inspection well 9 is used for inspecting, cleaning, and maintaining various pipelines. An inlet pipe 8 is connected upstream of the lower part of the inspection well 9. The inlet pipe 8 can connect to the treated domestic sewage pipe of the sewage treatment plant, allowing treated domestic sewage to flow into the inspection well 9. An outlet pipe 10 is connected downstream of the lower part of the inspection well 9, through which rainwater and treated domestic sewage continue to be discharged into the downstream drainage pipeline. A valve can also be installed on the inlet pipe 8 to control its opening and closing. Whether or not the treated domestic sewage is allowed to enter the inspection well can be determined based on its quality. Only when the treated sewage meets the discharge standards can the valve be opened, allowing the treated domestic sewage to enter the inspection well 9.

[0038] In some embodiments, at least one of the inlet pipe 8, outlet pipe 10, and overflow pipe 11 has multiple infiltration holes 12 at its lower part. These infiltration holes 12 are located on the lower pipe wall, allowing water inside the pipe to infiltrate and replenish groundwater. Specifically, if infiltration holes 12 are provided at the lower part of the overflow pipe 11, rainwater can infiltrate into the ground while flowing into the inspection well 9, replenishing groundwater. If infiltration holes 12 are provided at the lower part of the inlet pipe 8, treated sewage can infiltrate into the ground while flowing into the inspection well. If infiltration holes 12 are provided at the lower part of the outlet pipe 10, water can infiltrate into the ground while being discharged through the outlet pipe 10 to the downstream drainage pipe. By providing infiltration holes 12 at the lower parts of the inlet pipe 8, outlet pipe 10, and overflow pipe 11, groundwater can be replenished while rainwater and treated domestic sewage are being discharged normally.

[0039] In some embodiments, a second filter screen 1 is provided at the junction of the inlet pipe 8 and the inspection well, and at the junction of the outlet pipe 10 and the inspection well, to further filter the treated domestic sewage before it enters the inspection well, and to further filter the water discharged from the inspection well 9 into the downstream drainage pipe.

[0040] This integrated road drainage system allows rainwater to enter the collection well 5 through the perforated structure of the manhole cover 2 during rainfall, keeping large pieces of garbage out. Rainwater passes through the filter basket 3 and filter barrel 4 to remove particles of different sizes, then accumulates on the first filter screen 7. After further filtration by the first filter screen 7, it flows into the ground through the permeable foundation 6 to replenish groundwater. When rainfall is heavy, rainwater above the first filter screen 7 cannot be filtered in time, causing the water level to rise. When it reaches the height of the overflow pipe 11, the rainwater passes through the second filter screen 1 and enters the inspection well 9. The water in the inspection well is further filtered by the second filter screen 1 before entering the downstream pipeline through the outlet pipe 10. Furthermore, domestic sewage discharged by residents in the surrounding area, after treatment at the sewage treatment plant and meeting discharge standards, can enter the inspection well 9 through the inlet pipe 8. Before entering, the treated domestic sewage is filtered by the second filter screen 1.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A road drainage device integrating infiltration and drainage, characterized in that, include: The water collection well has a perforated well cover at the top, and a filter basket and a filter bucket are installed below the well cover from top to bottom. The bottom of the water collection well has a permeable foundation. An inspection well is located downstream of the water collection well, and a water outlet pipe is connected to the inspection well in the downstream direction. An overflow pipe is connected between the water collection well and the inspection well, and multiple permeation holes are provided at the lower part of the water outlet pipe and / or the overflow pipe.

2. The integrated road drainage device for seepage and drainage according to claim 1, characterized in that, An inlet pipe is connected upstream of the inspection well, and the inlet pipe is connected to the domestic sewage pipe after treatment at the sewage treatment plant.

3. The integrated road drainage device for seepage and drainage according to claim 2, characterized in that, The lower part of the water inlet pipe is provided with multiple permeation holes.

4. The integrated road drainage device for seepage and drainage according to claim 3, characterized in that, A first filter screen is also provided above the permeable base, and the filter holes of the first filter screen are smaller than the filter holes of the filter barrel.

5. The integrated road drainage device for seepage and drainage according to claim 3, characterized in that, A second filter screen is installed at the joint between the water inlet pipe and the inspection well, the joint between the water outlet pipe and the inspection well, and the joint between the overflow pipe and the inspection well.

6. The integrated road drainage device for seepage and drainage according to claim 3, characterized in that, The filter basket and filter bucket are suspended below the manhole cover.

7. The integrated road drainage device for seepage and drainage according to claim 3, characterized in that, The water collection wells are located on both sides of the road.

8. The integrated road drainage device for seepage and drainage according to claim 3, characterized in that, A valve is installed on the water inlet pipe.

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