A road rainwater filtering and collecting system convenient for cleaning and transporting

Abstract

The application discloses a road rainwater filtering and collecting system convenient to clean and transport, which comprises a road side inclined bottom sewer, a filtering and sand setting well, a filtering and water storage pool and a sand and gravel filtering cage. When it rains, the initial rainwater mixed with impurities such as dry leaves and the like collected on the road surface flows into the road side inclined bottom sewer, and enters the sand setting well through the first water inlet under the action of gravity. With the increase of the water collection amount, the water surface in the sand setting well slowly rises to reach the filtering plate, and then the rainwater penetrates into the filtering well through the filtering plate. The rainwater further penetrates into the sand and gravel filtering cage through the water permeable round hole plastic filtering plate on the side of the filtering well for filtering and purifying. Under the influence of gravity, the rainwater flows to the water storage pool through the steel support frame, and is stored in the water storage pool. The stored rainwater can be pumped to the ground through the water guide pipe arranged in the sand and gravel filtering cage, and is used for irrigating facilities and greening. The rainwater can also flow into the horizontal branch pipe through the drainage hole, and is connected to the municipal drainage pipe network. The whole system can not only improve the road water storage capacity and the road drainage capacity, but also purify the initial rainwater and irrigate the vegetation on the spot.

Description

Technical Field

[0001] This invention relates to the field of rainwater recycling technology, specifically to a road rainwater filtration and collection system that is easy to transport. Background Technology

[0002] During or after heavy rain and flooding, initial rainwater carrying large amounts of silt, fallen leaves, and other impurities enters the city's underground drainage network, causing sedimentation, siltation, and even blockages. Regular inspections and timely dredging are necessary. This increases the workload and difficulty for municipal maintenance departments, becoming a critical issue that urgently needs to be addressed.

[0003] With the nation's strong advocacy for "sponge city" construction, urban road cross-sections should comprehensively employ multiple measures such as infiltration, retention, storage, purification, utilization, and drainage. This will fully leverage the absorption and slow release functions of various sections of the urban road cross-section, including the median strip, infrastructure belts, and green belts, to achieve natural water accumulation, infiltration, and purification. This will promote the formation of an ecological, safe, and sustainable urban water cycle system, enabling the urban road network to possess good "elasticity" and "resilience" in dealing with heavy rainfall within the design return period for urban flood control. It will also effectively address the issues of initial rainwater purification and utilization, increase the water storage and drainage capacity of urban roads during the rainy season, and enable it to play a crucial role in sponge city construction. The following are existing technologies addressing the above issues:

[0004] Patent application CN202223553181.X discloses a rainwater collection and recycling system for urban rainwater harvesting, including a road body and a drainage well within the road body. A grating is installed at the inlet of the drainage well, and a water storage tank is installed at the end of the drainage well away from the grating. A collection well is located within the road body, with a cover plate at its opening and a collection box inside. A filter plate is rotatably installed inside the drainage well, and a connecting groove is provided on the side of the drainage well near the collection well. The free end of the filter plate extends into the connecting groove, and an elastic element is provided between the free end of the filter plate and the bottom of the connecting groove to facilitate the collection of debris falling onto the filter plate. A spray assembly is installed in the water storage tank for recycling the rainwater, effectively reducing the impact of smaller debris entering the water storage tank through the grating and thus affecting the recycling of the stored water.

[0005] The invention patent with application number CN202310471098.8 discloses a municipal road rainwater filtration system, including a drainage well; a first filter screen, obliquely placed inside the drainage well, used for filtering water and guiding the movement of debris, with a discharge channel formed between the left end of the first filter screen and the inner wall of the drainage well; an arc-shaped guide plate, one end connected to the left end of the first filter screen and the other end fixedly installed on a fixed plate, used to guide the flow of water filtered by the first filter screen; most of the rainwater and debris entering the drainage well falls onto the first filter screen. Under the action of the first filter screen, the rainwater flows down to the drain pipe under the guidance of the arc-shaped guide plate, while the debris slides down the first filter screen and falls onto the second filter screen. Under the action of the second filter screen, the rainwater can be further filtered. The filtered rainwater flows down to the drain pipe under the guidance of the slope, while the debris slides down the second filter screen and enters the collection well through the connecting groove for unified collection of debris.

[0006] The invention patent with application number CN202310438593.9 discloses a municipal rainwater harvesting system, including a drainage well and a manhole cover located at the edge of the road, and further comprising: a first collection and filtration chamber disposed below the drainage well; a first rainwater filter element disposed in the first collection and filtration chamber for preliminary filtration of impurities in the rainwater; a second collection and filtration chamber disposed below the first collection and filtration chamber; a second rainwater filter element disposed in the second collection and filtration chamber for further filtration of impurities in the rainwater; and a water storage tank for collecting and storing the filtered rainwater, which can improve the filtration effect of rainwater, thereby effectively utilizing rainwater for municipal operations. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of this invention is to provide a road rainwater filtration and collection system that is easy to clean.

[0008] To achieve the above objectives, the present invention relates to a road rainwater filtration and collection system that facilitates collection and transportation, comprising a roadside sloping groundwater well, a sedimentation well, a filtration storage tank, and a gravel filter cage. The filtration storage tank includes a lower storage tank and an upper filtration tank, which is located below the roadside facilities strip of the urban road. The top of the storage tank has an opening that extends upwards to the ground to form the filtration tank. The top of the storage tank, except for the opening, is covered with a layer of soil. The sedimentation well includes an upper filtration well, a lower sedimentation well, a filter baffle, a well cover, a first inlet, and a sealing door. The filter baffle is detachably installed between the filtration well and the sedimentation well. The sedimentation well is placed inside the storage tank, and the filtration well is placed inside the filtration tank. The well cover covers the top of the filtration well. The two side plates of the filtration well perpendicular to the road are filter plates. A gravel filter cage is fixed in the filtration tank outside the filter plates, and the gravel filter cage is set close to the filter plates. A steel support frame is provided at the bottom of the gravel filter cage, and the steel support frame is fixed at the top opening of the storage tank. A first water inlet is located on the side wall of the sedimentation well near the roadway. A second water inlet is located at the corresponding position of the water storage tank outside the first water inlet. A detachable sealing door is connected to the first water inlet. The gravel filter cage includes a gravel filter cage body and a water inlet pipe. The water inlet pipe is placed vertically inside the gravel filter cage body, with its lower part connected to the water storage tank and its upper part extending out of the gravel filter cage for connecting to external pumping equipment. A roadside inclined groundwater well is excavated outside the roadway and close to the roadside facility strip. The water outlet at the bottom of the roadside inclined groundwater well is connected to the second water inlet and the first water inlet in sequence.

[0009] Specifically, the filter plate is a water-permeable perforated plastic filter plate.

[0010] Specifically, the steel reinforcement support frame is a grid-shaped pre-embedded φ10 threaded steel bar.

[0011] Specifically, the roadside sloping-bottom drainage well involved in this invention includes a rainwater grate and a sloping-bottom channel; the sloping-bottom channel is excavated on the outside of the carriageway and close to the roadside facility strip, the bottom of the sloping-bottom channel is a sloped surface sloping downward toward the roadside facility strip, the rainwater grate is fixed at the upper inlet of the sloping-bottom channel, and an outlet is opened at the bottom of the side wall of the sloping-bottom channel near the roadside facility strip, and the outlet is connected in sequence to the second inlet and the first inlet.

[0012] Preferably, the manhole cover is a permeable manhole cover.

[0013] Specifically, the manhole cover involved in this invention is a pebble concealed manhole cover, comprising a "convex" shaped stainless steel cage, pebbles, a stainless steel panel, and hooks. The pebbles are filled in the stainless steel cage, and the stainless steel panel is fixed in the grooves on both sides of the "convex" shaped stainless steel cage. Hooks are provided on the stainless steel panel. The pebble concealed manhole cover has the same exposed height as the curb of a standard section of conventional road.

[0014] Specifically, the water storage tank involved in this invention is located below the roadside facility strip of a conventional urban road and between the tree pits of two adjacent roadside trees. The water storage tank includes a side water storage tank, a central water storage tank, a second inlet, and a drainage hole. The side water storage tanks are located on both sides of the central water storage tank and are connected to the central water storage tank from the side. The top of the side water storage tanks is covered with a soil layer. The top of the central water storage tank has an opening that extends upward to the ground to form a filter tank. A filter well is placed inside the filter tank. Gravel filter cages are formed in the filter tanks on both sides of the filter well. The gravel filter cages are placed in the storage area close to the outside of the filter plate. A second inlet is provided on the side wall of the central water storage tank near the roadway. The second inlet corresponds to the first inlet. A drainage hole is provided on the side wall of the water storage tank away from the second inlet. The drainage hole is connected to the municipal drainage network through a rainwater branch pipe.

[0015] Specifically, the water storage tank and the filtration tank are integrally formed and are made of reinforced concrete. The filtration well and the sedimentation well are integrally formed and are made of plastic material.

[0016] Specifically, the soil layer thickness involved in this invention is determined based on the depth of plant roots within the roadside facility strip.

[0017] Specifically, the gravel filter cage body of the present invention includes a steel mesh and gravel, with the gravel embedded inside the steel mesh to form the gravel filter cage body.

[0018] Specifically, the upper surface of the gravel filter cage and the upper surface of the manhole cover involved in this invention are flush with the upper surface of the curbstone in the roadside facility strip.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Enhancing Road Water Storage Capacity: Currently, the extensive hardening of urban surfaces hinders rainwater infiltration, increases surface runoff, and causes most rainwater to stagnate and flow into municipal pipe networks, resulting in insufficient drainage and flood control capacity and affecting normal road use. This invention effectively stores a certain amount of rainwater during the rainy season through a filtration and sedimentation collection system, thereby improving road water storage capacity.

[0021] 2. Enhancing Road Drainage Capacity: As the drainage capacity of urban underground pipe networks gradually reaches saturation, this invention seeks new space beneath the facility strips in conventional road cross-sections. By adding filter sedimentation wells to the facility strips, road drainage capacity can be improved during short-term heavy rainfall. This is a concrete design embodiment of the "sponge city" concept and also improves the three-dimensional, multi-dimensional drainage system of urban roads.

[0022] 3. Purification of Initial Rainwater: This invention utilizes roadside sloping drainage wells to allow initial rainwater containing mud, sand, fallen leaves, and other impurities to flow under gravity into the lower part of the sedimentation well, where it settles. As the water volume increases, the water level in the sedimentation well gradually rises to the upper part of the sedimentation well, where it is then filtered through the filter plates and the outer gravel filter cage for purification. Finally, under gravity, it flows into a filtered storage tank for storage. The entire purification process requires no human intervention and achieves the goal of purifying initial rainwater at a low cost.

[0023] 4. Utilizing purified rainwater for irrigation of green spaces or cleaning of sedimentation wells: This invention utilizes roadside sloping drainage wells to collect initial rainwater containing impurities such as mud, sand, and fallen leaves. This water flows through openings in the side wall of the sedimentation well and, under gravity, into the lower part of the well where it settles. As the water volume increases, the water level rises to the upper part of the sedimentation well, where it is then filtered and purified through the filter plates and the outer gravel filter cage before flowing into a storage tank under gravity. The stored rainwater can then be pumped to the ground through PVC pipes inside the gravel filter cage for irrigating the green spaces or cleaning the sedimentation wells, saving on maintenance costs.

[0024] 5. Mechanized dredging improves maintenance efficiency: Compared with conventional urban road cross-sections, this invention adds a set of filtration and sedimentation collection systems below the facility belt to purify and store rainwater without affecting the greening and facility installation. It can also be used to pump water from nearby areas to irrigate greening. The silt in the filtration and sedimentation wells is easy to remove by mechanized methods, and the filtration and sedimentation wells are also easy to clean, thus improving maintenance efficiency. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view along the road of a road rainwater filtration and collection system that facilitates waste removal, as per the present invention.

[0026] Figure 2 This is a cross-sectional view perpendicular to the road direction of a road rainwater filtration and collection system that facilitates rainwater collection and transportation, as per the present invention.

[0027] Figure 3 This is a schematic diagram of the filtration sedimentation well structure involved in the present invention.

[0028] Figure 4 This is a schematic diagram of the sand and gravel filter cage structure involved in the present invention.

[0029] Figure 5 This is a schematic diagram of the water storage tank structure involved in the present invention.

[0030] Figure 6 This is a three-dimensional schematic diagram of the combined structure of the sedimentation well and the water storage tank involved in the present invention.

[0031] Figure 7 This is a top view of the combined structure of the sedimentation well and the water storage tank involved in the present invention.

[0032] Figure 8 This is a diagram of the manhole cover and curbstone combination involved in the present invention.

[0033] Among them: 1-Roadside sloping bottom drainage well, 2-Filter sedimentation well, 3-Filter pool, 4-Water storage pool, 5-Gravel filter cage, 6-Roadside facility strip, 7-Roadway, 8-Curvestone, 9-Soil layer, 10-Reinforcing steel support frame, 11-Hedge stone, 101-Rain grate, 102-Sloping bottom passage, 201-Filter well, 202-Lower sedimentation well, 203-Filter partition, 204-First water inlet, 205-Stainless steel cage body, 206-Filter plate, 207-Stainless steel panel, 208-Hook, 401-Side water storage pool, 402-Central water storage pool, 403-Second water inlet, 404-Drainage hole, 501-Gravel filter cage body, 502-Water pipe. Detailed Implementation

[0034] The present invention will be further described below through specific embodiments.

[0035] Example 1

[0036] This embodiment relates to a road rainwater filtration and collection system that is easy to transport, including a roadside sloping bottom well 1, a sedimentation well 2, a water storage tank, and a gravel filter cage 5;

[0037] The filtration and storage tank includes a storage tank 4 and a filtration tank 3. The storage tank 4 is set below the roadside facility strip 6 of a conventional urban road. The top of the storage tank 4 has an opening that extends upward to the ground to form the filtration tank 3. Except for the opening, the top of the storage tank is covered with a soil layer 9.

[0038] The settling well 2 includes an upper settling well 201, a lower settling well 202, a filter baffle 203, a well cover, a first inlet 204, and a sealing door. The filter baffle 203 is detachably installed between the settling well 201 and the settling well 202. The settling well 202 is placed inside the water storage tank 4, and the settling well 201 is placed inside the filter tank 3. The well cover covers the top of the settling well 201. The two side plates of the settling well 201 perpendicular to the road are filter plates 206. A gravel filter cage 5 is fixed inside the filter tank 3 outside the filter plates 206. The gravel passes through... The filter cage 5 is set close to the filter plate 206. The bottom of the gravel filter cage 5 is provided with a steel bar support frame 10. The steel bar support frame 10 is fixed at the top opening of the water storage tank 4. The steel bar support frame 10 can not only support the gravel filter cage 5 from the bottom, but also allow the water filtered by the gravel filter cage 5 to permeate into the water storage tank 4. The side wall of the sedimentation well 202 near the roadway 7 is provided with a first water inlet 204. The water storage tank outside the first water inlet 204 is provided with a second water inlet 403 at the corresponding position. A detachable sealing door is connected to the first water inlet 204.

[0039] The gravel filter cage 5 includes a gravel filter cage body 501 and a water inlet pipe 502. The water inlet pipe 502 is vertically placed inside the gravel filter cage body 501 and its lower part is connected to the water storage tank 4. Its upper part extends out of the soil layer 9 for connecting to external pumping equipment.

[0040] A roadside sloping bottom drainage well 1 is excavated on the outer side of the carriageway 7 and close to the roadside facility strip 6. The bottom outlet of the roadside sloping bottom drainage well 1 is connected to the second water inlet 403 and the first water inlet 204 in sequence.

[0041] Specifically, the steel reinforcement support frame 10 is a grid-shaped pre-embedded φ10 threaded steel bar.

[0042] like Figure 2 As shown, specifically, the roadside sloping-bottom drainage well 1 involved in this embodiment includes a rainwater grate 101 and a sloping-bottom channel 102; the sloping-bottom channel 102 is dug on the outside of the carriageway 7 and close to the roadside facility strip 6. The bottom of the sloping-bottom channel 102 is a sloped surface that slopes downward toward the roadside facility strip 6. The rainwater grate 101 is fixed at the upper inlet of the sloping-bottom channel 102. An outlet is opened at the bottom of the side wall of the sloping-bottom channel 102 near the roadside facility strip 6. The outlet is connected to the second inlet 403 and the first inlet 204 in sequence, and then connected to the filter sedimentation well 2, so that the mud, sand, dead leaves and other impurities mixed with the initial rainwater can slide down to the bottom of the filter sedimentation well. After the impurities accumulate to a certain extent and reach the filter baffle 203, the cobblestone hidden well cover is opened, and the filter sedimentation plastic well is mechanically hoisted to the garbage truck to dump the silt and impurities.

[0043] Specifically, in this embodiment, the sedimentation well has a first inlet 204 on its side wall near the roadway, which connects to the roadside sloping drainage well 1. This inlet is used to collect impurities such as silt and dead leaves brought in from the roadside sloping drainage well 1. The remaining side walls are made of impermeable plastic material to accommodate silt, dead leaves, and other impurities. The standard for determining whether the lower part of the sedimentation well is full is to observe the accumulation of silt, dead leaves, and other impurities on the bottom of the roadside sloping drainage well 1 through the rain grate. If there are accumulated impurities on the bottom of the roadside sloping drainage well, it means that the lower part of the sedimentation well is full of silt, dead leaves, and other impurities and cannot accommodate any more. In this case, timely fixed-point mechanical dredging is necessary; otherwise, dredging is not required. This can also be used to formulate a regular dredging plan based on the previous dredging cycles of the sedimentation well. Furthermore, the sedimentation well is an integrated, prefabricated plastic well that can be hoisted. The two side panels along the road are made of impermeable plastic panels, while the two side walls perpendicular to the road are made of permeable plastic filter panels with round holes. The outer wall of the impermeable plastic panels is equipped with hooks for hoisting, which facilitates mechanical hoisting and dredging.

[0044] like Figure 7 As shown, preferably, the manhole cover is a permeable manhole cover, flush with the road surface. Rainwater above the manhole cover or on the side of pedestrians (such as a sidewalk) can seep into the filter sedimentation well 2, playing a certain role in drainage and water purification. Specifically, the manhole cover involved in this embodiment is a pebble concealed manhole cover, including a "convex" shaped stainless steel cage 205, pebbles, a stainless steel panel 207, and hooks 208. The pebbles are filled in the stainless steel cage 205, and the stainless steel panel 207 is fixed in the grooves on both sides of the "convex" shaped stainless steel cage 205. The stainless steel panel 207 is provided with hooks 208 to facilitate the opening of the manhole cover. The exposed height of the pebble concealed manhole cover is consistent with that of the standard section curbstone 8 of the conventional road, which facilitates the drainage of pedestrian water.

[0045] The opening at the top of the water storage tank 4 can be located anywhere on the top of the water storage tank. As a preferred option, the opening is located in the middle of the top of the water storage tank, as shown below. Figure 5As shown. In this embodiment, the water storage tank 4 is located below the roadside facility strip 6 of a conventional urban road and between the tree pits of two adjacent roadside trees. The water storage tank 4 includes a side water storage tank 401, a central water storage tank 402, a second inlet 403, and a drainage hole 404. The side water storage tank 401 is located on both sides of the central water storage tank 4 and communicates with it from the side. The top of the side water storage tank 401 is covered with a soil layer 9. The top of the central water storage tank 4 has an opening that extends upwards to the ground to form a passageway. Filter pool 3 and filter well 201 are placed inside filter pool 3. Gravel filter cages 5 are formed on both sides of filter well 201 within filter pool 3. The gravel filter cages 5 are placed close to the outer side of filter plate 206 within the storage area. A second inlet 403 is provided on the side wall of the central water storage tank 402 near the driveway 7, corresponding to the first inlet 204. Drainage holes 404 are provided on the side wall of the water storage tank away from the second inlet 403, and are connected to the municipal drainage network via rainwater branch pipes. This technical solution effectively avoids impacting tree root systems and effectively protects the root systems of the vegetation in the green belt above the side water storage tank 401. The water storage tank 4 and filter pool 3 are integrally formed and constructed of reinforced concrete. The diameter of the drainage holes 404 is 300mm-400mm, and the specific number is determined according to the actual situation. Drainage hole 404 connects the water in the storage tank to the municipal drainage network, forming a complete initial rainwater filtration, sedimentation, collection and discharge system.

[0046] Specifically, in this embodiment, the upper part of the water storage tank 4, except for the opening, is covered with a soil layer 9. The thickness of the soil layer 9 is determined according to the depth of the plant roots in the roadside facility strip 6, and can be 0.3-1.0m, preferably 0.5m.

[0047] like Figure 4 As shown, specifically, the gravel filter cage body 501 involved in this embodiment includes a steel mesh and gravel, with the gravel embedded within the steel mesh to form the gravel filter cage body 501. The gravel filter cage body 501 serves as a permeable layer for the sedimentation well and the soil in the facility area. Simultaneously, the gravel filter cage body 501 contains two vertical PVC water inlet pipes with a diameter of 100mm. The bottom ends of the water inlet pipes extend into the filter storage tank, while the top ends protrude 0.2m above the top surface of the gravel filter cage and are sealed. Their main function is to draw purified rainwater from the filter storage tank through these pipes for irrigation of the facility area's greenery or cleaning of the sedimentation well.

[0048] Specifically, in this embodiment, the upper surface of the gravel filter cage 5 and the upper surface of the manhole cover are flush with the upper surfaces of the curbstone 8 (close to the driving lane) and the hedge stone 11 (away from the driving lane) in the roadside facility strip 6.

[0049] As one implementation, the roadside inclined drainage well 1 is 1.4m long along the road, 0.5m wide perpendicular to the road, and 1m deep; correspondingly, the upper opening of the filter sedimentation well 2 is 1.4m long along the road, and the width perpendicular to the road is the same as the width of the facility strip, usually 1.5m-2m. Both dimensions include a well wall thickness of 0.1m and a well depth of 2m. Among them, the filter well 201 has a depth of 0.5m, and the sedimentation well 202 has a depth of 1.5m.

[0050] The cobblestone concealed manhole cover is 1.4m long along the road and 1.5m-2m wide perpendicular to the road, with a thickness of 0.2m. The top of the "convex" shaped stainless steel cage 205 is 1m long along the road, the bottom is 1.4m long along the road, and the stainless steel panel 207 is 0.2m long along the road.

[0051] The gravel filter cage is 0.3m long along the road and 0.8m-1.3m wide perpendicular to the road. Its width is the width of the facility strip minus the width of the curb stone 8 and the hedge stone 11, minus the wall thickness of the filter pools on both sides of 0.2m. The depth is 0.7m.

[0052] The opening of the water storage tank has an inner length of 2m along the road, including a gravel filter cage holding area with a net width of 0.3m on each side. The inner width perpendicular to the road is the same as the width of the facility strip, usually 1.5m-2m, and the depth is 1.5m. None of these three dimensions include the 0.2m well wall thickness.

[0053] The filter tank 3 has an inner length of 2m along the road, and an inner width perpendicular to the road that is the same as the width of the facility belt, usually 1.5m-2m, and a depth of 0.7m.

[0054] The method of using a road rainwater filtration and collection system that facilitates waste removal, as described in this embodiment, is as follows:

[0055] During rainfall, the initial rainwater, mixed with mud, sand, dead leaves, and other impurities, collected in the roadway 7 flows into the roadside sloping drainage well 1. It undergoes initial filtration through a rainwater grate. Under gravity, the initial rainwater flows from the bottom of the roadside sloping drainage well through the second inlet 403 and the first inlet 204 into the sedimentation well 202. As the water volume increases, the water level in the sedimentation well slowly rises to the filter baffle 203, passing through the filter baffle 203 into the filter well 201. It then seeps through the filter plate 206 on the side of the filter well 201 into the gravel filter cage 5 for further filtration and purification. Finally, under gravity, it flows through the steel support frame 10 into the storage tank 4. The stored rainwater can be pumped to the ground through the PVC pipes inside the gravel filter cage for irrigation of the green areas, or it can enter the horizontal branch pipes through the drainage holes 404 and connect to the municipal drainage network.

[0056] During rainfall, initial rainwater collected on the sidewalk and rainwater above the manhole cover seep into the filter sedimentation well 2 from the side and top of the cobblestone concealed manhole cover, respectively, achieving preliminary purification of the rainwater. Accumulated mud, sand, and dead leaves in the cobblestone concealed manhole cover can be flushed out by pumping water from the filter storage tank.

[0057] When the impurities in the sedimentation well 202 reach the filter baffle 203, the pebble concealed manhole cover is opened, and the sedimentation well 2 is mechanically hoisted onto a garbage truck to dump the sludge and impurities. Then, the exposed end of the water inlet pipe 502 is connected to a pumping device to extract purified rainwater from the filtration storage tank for cleaning the sedimentation well. After completion, the well is returned to its original position. This operation achieves rainwater resource reuse and conserves water resources. During the hoisting of the sedimentation well, the sealed door is closed to prevent leakage of silt, dead leaves, or other impurities that could pollute the surrounding environment.

Claims

1. A road rainwater filtration and collection system that is easy to transport, characterized in that, This includes roadside sloping drainage wells, sedimentation wells, filtration and storage tanks, and gravel filter cages. The filtration and storage tank consists of a lower storage tank and an upper filtration tank, located below the roadside facilities strip of the urban road. The storage tank has an opening at the top that extends upwards to the ground to form the filtration tank. The top of the storage tank, except for the opening, is covered with soil. The sedimentation well includes an upper filtration well, a lower sedimentation well, filter baffles, a well cover, a first inlet, and a sealing door. The filter baffles are detachably installed between the filtration well and the sedimentation well. The sedimentation well is placed inside the storage tank, and the filtration well is placed inside the filtration tank. The well cover covers the top of the filtration well. The two side plates perpendicular to the road of the filtration well are filter plates, and the filter plates are fixed inside the filtration tank on the outer side. A gravel filter cage is installed close to a filter plate. A steel support frame is provided at the bottom of the gravel filter cage and fixed to the top opening of the water storage tank. A first water inlet is provided on the side wall of the sedimentation well near the roadway. A second water inlet is provided at the corresponding position of the water storage tank outside the first water inlet. A detachable sealing door is connected to the first water inlet. The gravel filter cage includes a gravel filter cage body and a water inlet pipe. The water inlet pipe is placed vertically in the gravel filter cage body and its lower part is connected to the water storage tank. Its upper part extends out of the gravel filter cage for connecting to external pumping equipment. A roadside inclined bottom drainage well is dug outside the roadway and close to the roadside facility strip. The water outlet at the bottom of the roadside inclined bottom drainage well is connected to the second water inlet and the first water inlet in sequence.

2. The road rainwater filtration and collection system for easy removal as described in claim 1, characterized in that, The steel reinforcement support frame is a grid-shaped pre-embedded φ10 threaded steel bar.

3. The road rainwater filtration and collection system for easy removal as described in claim 1, characterized in that, The roadside sloping-bottom drainage well includes a rainwater grate and a sloping-bottom channel. The sloping-bottom channel is excavated on the outside of the carriageway and close to the roadside facilities. The bottom of the sloping-bottom channel is a sloped surface that slopes downward toward the roadside facilities. The rainwater grate is fixed at the upper inlet of the sloping-bottom channel. An outlet is opened at the bottom of the side wall of the sloping-bottom channel near the roadside facilities. The outlet is connected to the second inlet and the first inlet in sequence.

4. The road rainwater filtration and collection system for easy removal as described in claim 1, characterized in that, The manhole cover is a leaky manhole cover.

5. The road rainwater filtration and collection system for easy removal according to claim 4, characterized in that, The manhole cover is a pebble concealed manhole cover, which includes a "convex" shaped stainless steel cage, pebbles, a stainless steel panel and hooks. The pebbles are filled in the stainless steel cage, and the stainless steel panel is fixed in the grooves on both sides of the "convex" shaped stainless steel cage. The stainless steel panel is equipped with hooks. The pebble concealed manhole cover is at the same height as the exposed curb of the standard section of conventional road.

6. The road rainwater filtration and collection system for easy removal according to claim 1, characterized in that, The water storage tank is located below the roadside facilities strip of a conventional urban road and between the tree pits of two adjacent roadside trees. The water storage tank includes a side water storage tank, a central water storage tank, a second inlet, and a drainage hole. The side water storage tanks are located on both sides of the central water storage tank and are connected to the central water storage tank from the side. The top of the side water storage tanks is covered with a layer of soil. The top of the central water storage tank has an opening that extends upward to the ground to form a filter tank. A filter well is placed inside the filter tank. On both sides of the filter well, a gravel filter cage is formed in the filter tank. The gravel filter cage is placed in the storage area close to the outside of the filter plate. The central water storage tank, which is close to the roadway, has a second inlet on its side wall. The second inlet corresponds to the first inlet. The water storage tank, which is far from the second inlet, has a drainage hole on its side wall. The drainage hole is connected to the municipal drainage network through a rainwater branch pipe.

7. The road rainwater filtration and collection system for easy removal according to claim 1 or 6, characterized in that, The water storage tank and the filtration tank are integrally formed and are made of reinforced concrete; the filtration well and the sedimentation well are integrally formed and are made of plastic material.

8. The road rainwater filtration and collection system for easy removal according to claim 1, characterized in that, The specific soil layer thickness is determined based on the depth of the plant root system within the roadside facility strip.

9. The road rainwater filtration and collection system for easy removal according to claim 1, characterized in that, The gravel filter cage body includes a steel mesh and gravel, with the gravel embedded inside the steel mesh to form the gravel filter cage body.

10. The road rainwater filtration and collection system for easy removal according to claim 1, characterized in that, The upper surface of the gravel filter cage and the upper surface of the manhole cover are flush with the upper surface of the curbstone in the roadside facility strip.

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