Municipal road drainage system

Abstract

The invention relates to the technical field of road engineering, in particular to a municipal road drainage system which comprises a road surface, a buffering and shunting module and a storage and drainage module. Rainwater is guided to gather towards the V-shaped water collecting groove through the water permeable holes in the inclined face of the stainless steel protection inclined plate, large-particle impurities are intercepted, the water flow resistance is reduced through the hydrophobic layer on the inner wall of the V-shaped water collecting groove, rainwater flowing is accelerated, and the water collecting efficiency during rainstorm is improved; the rough filtering layer, the middle filtering layer and the fine filtering layer in the trapezoidal filtering cavity form a multi-stage filtering system, impurities are intercepted, heavy metal ions are adsorbed, fine suspended solids are removed in sequence, the rainwater purification effect is improved, and the trapezoidal section of the trapezoidal filtering cavity with the narrow upper portion and the wide lower portion can enable a water flow path to be gradually enlarged from top to bottom. The method is consistent with the classification filtering concept of coarse filtering-fine filtering in the file, large-particle impurities can be preliminarily precipitated in the top area with the high flow speed, fine particles can be further precipitated in the bottom low-speed area, and the overall precipitation filtering efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of road engineering, and in particular to a municipal road drainage system. Background Technology

[0002] Municipal road drainage systems are engineering facilities systems that treat and remove urban sewage and rainwater. They are an integral part of urban public facilities and play a vital role in urban construction planning.

[0003] An existing patent (publication number: CN118880690A) discloses a municipal road drainage system, relating to the field of road engineering technology. Its key technical features include: a road surface with curbs on both sides, a cavity inside the curbs, a water inlet trough at the bottom of the cavity, a drainage ditch communicating with the water inlet trough inside the road surface, several filter plates inside the cavity with several drainage holes, several push rods for penetrating the drainage holes on the inner wall of the cavity, and a drive mechanism connected to the filter plates on the curbs. This drive mechanism drives the filter plates to move back and forth inside the cavity. The municipal road drainage system of this invention, by setting a drive mechanism, can drive the filter plates to move back and forth inside the cavity, automatically pushing out dirt for thorough cleaning, avoiding residue, and cleaning all drainage holes at once, eliminating the tedious operation of multiple flushes, making cleaning more convenient, time-saving, and labor-saving.

[0004] However, the device in the prior art only drains water through an inlet trough and a drainage ditch, which can easily lead to drainage bottlenecks during heavy rain, affecting the actual drainage effect. To solve the above problems, a municipal road drainage system is proposed. Summary of the Invention

[0005] 1. Technical problems to be solved The purpose of this application is to provide a municipal road drainage system to solve the problem of being unable to handle large-volume drainage.

[0006] This application provides a municipal road drainage system with the following technical solution: A municipal road drainage system includes a road surface, a buffer diversion module, and a storage and drainage module. Two curbs are fixedly connected to the upper surface of the road surface. Each curb is provided with a water collection component on its exterior. The water collection component includes a stainless steel protective inclined plate installed on the curb and multiple water-permeable holes opened on the inclined surface of the stainless steel protective inclined plate. A V-shaped water collection trough is opened on the upper surface of the road surface. The inner wall of the V-shaped water collection trough is coated with a hydrophobic layer. A filter screen is connected to the bottom end of the V-shaped water collection trough. A trapezoidal filter chamber is opened below the filter screen. A coarse filter layer, a medium filter layer, and a fine filter layer are installed sequentially at the bottom of the trapezoidal filter chamber.

[0007] The buffer diversion module includes a buffer box fixedly connected to the bottom of the road surface. Both sides of the buffer box are connected to connecting pipes. The top ends of the two connecting pipes are respectively connected to the interior of two trapezoidal filter chambers. The bottom of the buffer box is connected to a water supply pipe. A first one-way valve is installed on the section of the water supply pipe. The storage and discharge module includes a storage tank. The output end of the water supply pipe is connected to the interior of the storage tank. A siphon column is installed at the bottom of the storage tank. A siphon pipe is opened inside the siphon column. One end of the siphon pipe is connected to the interior of the storage tank. The other end of the siphon pipe is connected to a second external pipe.

[0008] By adopting the above technical solution, stainless steel protective inclined plates are installed on the outer side of the roadside. The permeable holes on the inclined surface can guide rainwater from the road surface to converge into the V-shaped water collection trough, while intercepting large particles of debris such as leaves. The hydrophobic layer on the inner wall of the V-shaped water collection trough can reduce water flow resistance, accelerate the flow of rainwater to the filter screen, avoid water accumulation and improve water collection efficiency during heavy rain. Then, the rainwater will be filtered through the coarse filter layer, the medium filter layer and the fine filter layer. The filtered water will be transported to the buffer tank through the connecting pipe, and then injected into the storage tank through the water supply pipe and the first one-way valve. The storage tank collects the filtered rainwater. When the water level reaches the critical height of the siphon column, the siphon pipeline forms a siphon effect, quickly discharging the rainwater through the second external pipeline. No water pump is required, which is energy-saving and has high drainage efficiency, and can effectively cope with the concentrated drainage needs of heavy rain.

[0009] Preferably, the bottom end of the stainless steel protective inclined plate is fixedly connected to a plug, the upper surface of the road surface is provided with a slot, the top of the stainless steel protective inclined plate is installed with a connecting piece, and the stainless steel protective inclined plate is fixedly connected between the road surface and the curb through the plug, slot and connecting piece. By adopting the above technical solution, the combination of the plug and the slot can realize the quick installation and removal of the stainless steel protective ramp. The connecting piece fixes its top, so that the stainless steel protective ramp is firmly installed between the road surface and the curb, which is convenient for later inspection and maintenance, while ensuring the continuity of the debris interception function.

[0010] Preferably, the coarse filter layer is a volcanic rock layer, the medium filter layer is a zeolite layer, and the fine filter layer is a PP cotton filter element, with each layer separated by a stainless steel screen. By adopting the above technical solution, the coarse filter layer, the medium filter layer and the fine filter layer are arranged in layers from top to bottom to form a multi-stage filtration system of coarse filtration-medium filtration-fine filtration, which can sequentially intercept large particulate impurities, adsorb heavy metal ions and remove fine suspended solids, improve the rainwater purification effect and reduce the load on the subsequent storage and discharge module.

[0011] Preferably, a reserved groove is provided inside the curb, a reciprocating screw is rotatably sleeved on the inner wall of the reserved groove, a servo motor is fixedly connected to the outer surface of the curb, the output end of the servo motor is fixedly connected to the rotating shaft end of the reciprocating screw, and a sleeve block is threadedly connected to the outer surface of the reciprocating screw. By adopting the above technical solution, when the servo motor starts, it can drive the reciprocating lead screw to rotate, and when the reciprocating lead screw rotates, it can make the sleeve move in the inner wall of the reserved slot.

[0012] Preferably, a guide post is fixedly connected to the inner wall of the reserved groove, the inner wall of the sleeve is slidably sleeved on the outer surface of the guide post, and an L-shaped connecting plate is fixedly connected to the other end of the sleeve. By adopting the above technical solution, the sleeve block is slidably fitted onto the outer surface of the guide post, which can improve the stability of the sleeve block during movement, thereby optimizing the subsequent cleaning effect and making it more practical.

[0013] Preferably, the two ends of the L-shaped connecting plate are respectively fixedly connected with a bevel cleaning brush and a bottom cleaning brush. The bevel cleaning brush is adapted to the stainless steel protective bevel plate, and the bottom cleaning brush is adapted to the filter screen. By adopting the above technical solution, the servo motor drives the reciprocating screw to rotate, which in turn drives the sleeve block to move back and forth along the guide column. The inclined cleaning brush and the bottom cleaning brush on the L-shaped connecting plate can simultaneously clean the stainless steel protective inclined plate and the surface of the filter screen, preventing the accumulation and blockage of debris, realizing automatic cleaning of the filter chamber and reducing the frequency of manual maintenance.

[0014] Preferably, a first water level sensor is embedded in the inner top wall of the reserved groove, the first water level sensor is electrically connected to the servo motor, and an arc-shaped guide slope is provided at the bottom of the reserved groove. By adopting the above technical solution, the first water level sensor monitors the water level above the V-shaped water collection tank in real time. When the water level is too high, the servo motor is triggered to start the cleaning mechanism to avoid water accumulation above the V-shaped water collection tank. The arc-shaped guide slope can guide the water entering the reserved tank to flow towards the V-shaped water collection tank to avoid excessive water accumulation inside the reserved tank.

[0015] Preferably, the inner wall of the buffer box is fixedly connected to two flow guide baffles, and the positions of the two flow guide baffles are respectively adapted to the positions of the output ends of the two connecting pipes; By adopting the above technical solution, the two guide baffles correspond to the outlets of the connecting pipes on both sides, which can divert water from different directions, avoid turbulence caused by water flow collision, allow rainwater to enter the buffer tank smoothly, improve water flow stability, and prevent drainage bottlenecks when the flow is large.

[0016] Preferably, a second water level sensor is embedded in the inner wall of the buffer tank, and a first external pipeline is connected to the top of the buffer tank. A second one-way valve and a solenoid valve are installed on the pipe section of the first external pipeline, and the output ends of the first and second external pipelines are respectively connected to the municipal drainage pipeline. By adopting the above technical solution, the second water level sensor monitors the water level in the buffer tank. When the water level exceeds the set value, the solenoid valve opens, and the first external pipeline drains directly through the second check valve, forming a dual drainage path with the siphon pipeline and the second external pipeline. This can cope with the huge flow during heavy rain, avoid overloading the storage tank, and improve the system's drainage capacity.

[0017] 2. Beneficial effects In summary, this application includes at least one of the following beneficial technical effects: 1. This invention provides a municipal road drainage system. Rainwater is guided to a V-shaped collection trough through permeable holes on the inclined surface of a stainless steel protective plate, where it converges and intercepts large particles of debris. The hydrophobic layer on the inner wall of the V-shaped collection trough reduces water flow resistance, accelerates rainwater flow, and improves water collection efficiency during heavy rain. The trapezoidal filter chamber contains a coarse filter layer, a medium filter layer, and a fine filter layer, forming a multi-stage filtration system that sequentially intercepts impurities, adsorbs heavy metal ions, and removes fine suspended solids, improving rainwater purification. Furthermore, the trapezoidal cross-section of the filter chamber, narrow at the top and wide at the bottom, allows the water flow path to gradually widen from top to bottom. This aligns with the "coarse filtration-fine filtration" staged filtration concept described in the document, allowing large particles to initially settle in the faster-flowing top area, while fine particles further settle in the lower-speed bottom area, improving overall sedimentation and filtration efficiency.

[0018] 2. This invention provides a municipal road drainage system. By setting up a buffer tank, a flow guide baffle, a second water level sensor, and a first external pipeline, the flow guide baffle diverts water from both sides to avoid water flow collision. When the second water level sensor detects that the water level in the buffer tank exceeds the limit, it opens a solenoid valve, so that the first external pipeline and the siphon pipeline form a dual drainage path to cope with the drainage demand of large flow during rainstorms and avoid overloading the storage tank. By setting up a storage tank, a siphon column, and a siphon pipeline, the storage tank collects filtered rainwater. When the water level reaches the critical height of the siphon column, the siphon pipeline forms a siphon effect to drain water quickly without the need for a water pump. It is energy-saving and has high drainage efficiency, effectively coping with the concentrated drainage demand of rainstorms.

[0019] 3. This invention provides a municipal road drainage system. By setting up a servo motor, a reciprocating lead screw, an inclined cleaning brush, and a bottom cleaning brush, a first water level sensor monitors the water level and triggers the servo motor to drive the reciprocating lead screw to rotate, which in turn drives the sleeve block to move back and forth along the guide column. This allows the inclined cleaning brush and the bottom cleaning brush on the L-shaped connecting plate to simultaneously clean the stainless steel protective inclined plate and the filter screen, thereby achieving automatic cleaning of the filter chamber and reducing the frequency of manual maintenance. Attached Figure Description

[0020] Figure 1 This is a top view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall bottom view of the present invention; Figure 3 This is a partial cross-sectional view of the present invention; Figure 4 This is a schematic diagram of a partial explosion structure of the present invention; Figure 5 This is a partial bottom view of the structure of the present invention; Figure 6 This is a schematic diagram of the overall side sectional structure of the present invention; Figure 7 This is a cross-sectional planar structural diagram of the present invention.

[0021] Among them, 1. Road surface; 2. Road curb; 3. Water collection assembly; 301. Stainless steel protective inclined plate; 302. Water permeable hole; 303. Insert block; 304. Slot; 305. Connecting piece; 306. V-shaped water collection trough; 307. Hydrophobic layer; 308. Filter screen; 309. Trapezoidal filter chamber; 310. Coarse filter layer; 311. Medium filter layer; 312. Fine filter layer; 313. Reserved groove; 314. Reciprocating screw; 315. Servo motor; 316. Guide column; 317. Sleeve block; 318. L-shaped connecting plate; 31 9. Inclined cleaning brush; 320. Bottom cleaning brush; 321. First water level sensor; 322. Arc-shaped guide slope; 4. Buffer diversion module; 401. Connecting pipe; 402. Buffer tank; 403. Water supply pipe; 404. First one-way valve; 405. Guide baffle; 406. Second water level sensor; 407. First external pipeline; 408. Second one-way valve; 409. Solenoid valve; 5. Storage and drainage module; 501. Storage tank; 502. Siphon column; 503. Siphon pipeline; 504. Second external pipeline. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail below.

[0023] Example 1: A municipal road drainage system, referring to Figure 1 , Figure 3 and Figure 4The system includes a road surface 1, a buffer diversion module 4, and a water storage and drainage module 5. Two curbs 2 are fixedly connected to the upper surface of the road surface 1. Each curb 2 has a water collection component 3 on its exterior. The water collection component 3 includes a stainless steel protective inclined plate 301 installed on the curb 2 and multiple water-permeable holes 302 opened on the inclined surface of the stainless steel protective inclined plate 301. A plug 303 is fixedly connected to the bottom end of the stainless steel protective inclined plate 301. A slot 304 is opened on the upper surface of the road surface 1. A connecting piece 305 is installed on the top of the stainless steel protective inclined plate 301. The stainless steel protective inclined plate 301 is connected via the plug 303, the slot 304, and the connecting piece 305. The connecting piece 305 is fixedly connected between the road surface 1 and the curb 2. The cooperation between the insert 303 and the slot 304 enables the quick installation and removal of the stainless steel protective inclined plate 301. The connecting piece 305 fixes its top, so that the stainless steel protective inclined plate 301 is firmly installed between the road surface 1 and the curb 2, which is convenient for later inspection and maintenance, and at the same time ensures the continuity of the debris interception function. A V-shaped water collection groove 306 is provided on the upper surface of the road surface 1. The inner wall of the V-shaped water collection groove 306 is coated with a hydrophobic layer 307. The hydrophobic layer 307 can reduce water flow resistance and increase water flow speed, which is beneficial to efficient drainage.

[0024] Reference Figure 1 , Figure 3 and Figure 4 The bottom of the V-shaped water collection tank 306 is connected to a filter screen 308. Below the filter screen 308, a trapezoidal filter chamber 309 is provided. At the bottom of the trapezoidal filter chamber 309, a coarse filter layer 310, a medium filter layer 311, and a fine filter layer 312 are installed in sequence. The coarse filter layer 310 is preferably a volcanic rock layer, the medium filter layer 311 is preferably a zeolite layer, and the fine filter layer 312 is preferably a PP cotton filter element. The layers are separated by a stainless steel screen. Arranged in layers from top to bottom, a multi-stage filtration system of coarse filtration, medium filtration, and fine filtration is formed. This system can sequentially intercept large particulate impurities, adsorb heavy metal ions, and remove fine suspended solids, thereby improving rainwater purification and reducing the load on the subsequent storage and discharge module 5. The trapezoidal filter chamber 309 adopts a cross-sectional structure that is narrower at the top and wider at the bottom. This trapezoidal structure optimizes the water flow gradient, enhances self-cleaning ability, and saves space. It is highly consistent with the core technical objectives of "improving drainage efficiency," "reducing maintenance costs," and "modular design" in the document. This design not only improves filtration performance but also reduces construction and maintenance costs through structural innovation. It is an effective optimization of the original filtration module in the document.

[0025] Reference Figure 2 , Figure 6 and Figure 7The buffer diversion module 4 includes a buffer box 402 fixedly connected to the bottom surface of the road surface 1. Connecting pipes 401 are connected to both sides of the buffer box 402. The top ends of the two connecting pipes 401 are respectively connected to the interior of two trapezoidal filter chambers 309. A water supply pipe 403 is connected to the bottom of the buffer box 402. A first one-way valve 404 is installed on a section of the water supply pipe 403. The storage and discharge module 5 includes a regulating tank 501. The output end of the water supply pipe 403 is connected to the interior of the regulating tank 501. The storage tank 501 is connected to a siphon column 502 installed at its bottom. A siphon pipe 503 is opened inside the siphon column 502. One end of the siphon pipe 503 is connected to the interior of the storage tank 501, and the other end is connected to a second external pipe 504. Two flow guide baffles 405 are fixedly connected to the inner wall of the buffer tank 402. The positions of the two flow guide baffles 405 are respectively adapted to the positions of the output ends of the two connecting pipes 401. 5 corresponds to the outlets of the connecting pipes 401 on both sides, which can divert water from different directions, avoid turbulence caused by water flow collision, and allow rainwater to enter the buffer tank 402 smoothly, improving water flow stability and preventing drainage bottlenecks during high flow rates. The inner wall of the buffer tank 402 is embedded with a second water level sensor 406. The top of the buffer tank 402 is connected to a first external pipeline 407. A second one-way valve 408 and a solenoid valve 409 are installed on the pipe section of the first external pipeline 407. The output ends of the first external pipeline 407 and the second external pipeline 504 are respectively connected to the municipal drainage pipeline. The second water level sensor 406 monitors the water level of the buffer tank 402. When the water level exceeds the set value, the solenoid valve 409 opens, and the first external pipeline 407 drains directly through the second one-way valve 408, forming a dual drainage path with the siphon pipeline 503 and the second external pipeline 504. This can cope with the huge flow during heavy rain, avoid overloading the storage tank 501, and improve the system's drainage capacity.

[0026] Example 2: A municipal road drainage system, referring to Figure 3 , Figure 4 and Figure 5 The curb 2 has a pre-reserved groove 313 inside. A reciprocating screw 314 is rotatably fitted on the inner wall of the pre-reserved groove 313. A servo motor 315 is fixedly connected to the outer surface of the curb 2. The output end of the servo motor 315 is fixedly connected to the shaft end of the reciprocating screw 314. A sleeve block 317 is threadedly connected to the outer surface of the reciprocating screw 314. When the servo motor 315 starts, it can drive the reciprocating screw 314 to rotate. When the reciprocating screw 314 rotates, it can move the sleeve block 317 in the inner wall of the pre-reserved groove 313. A guide post 316 is fixedly connected to the inner wall of the pre-reserved groove 313. The inner wall of the sleeve block 317 is slidably fitted on the outer surface of the guide post 316. An L-shaped connecting plate 318 is fixedly connected to the other end of the sleeve block 317. Sliding the sleeve block 317 on the outer surface of the guide post 316 can improve the stability of the sleeve block 317 when it moves, thereby optimizing the subsequent cleaning effect and making it more practical.

[0027] Reference Figure 3 , Figure 4 and Figure 5 The L-shaped connecting plate 318 has a beveled cleaning brush 319 and a bottom cleaning brush 320 fixedly connected to its two ends, respectively. The beveled cleaning brush 319 is adapted to the stainless steel protective inclined plate 301, and the bottom cleaning brush 320 is adapted to the filter screen 308. The servo motor 315 drives the reciprocating screw 314 to rotate, which in turn drives the sleeve block 317 to move back and forth along the guide post 316. The beveled cleaning brush 319 and the bottom cleaning brush 320 on the L-shaped connecting plate 318 can simultaneously clean the surfaces of the stainless steel protective inclined plate 301 and the filter screen 308, preventing debris from accumulating and clogging, realizing automatic cleaning of the filter chamber, and reducing the frequency of manual maintenance. Next, a first water level sensor 321 is embedded in the inner top wall of the reserved groove 313. The first water level sensor 321 is electrically connected to the servo motor 315. An arc-shaped guide slope 322 is provided at the bottom of the reserved groove 313. The first water level sensor 321 monitors the water level above the V-shaped water collection tank 306 in real time. When the water level is too high, the servo motor 315 is triggered to start the cleaning mechanism to avoid water accumulation above the V-shaped water collection tank 306. The arc-shaped guide slope 322 can guide the water entering the reserved groove 313 to flow towards the V-shaped water collection tank 306 to avoid excessive water accumulation inside the reserved groove 313.

[0028] The implementation principle of this application embodiment is as follows: when rainwater falls on the road surface 1, it is guided by the slope of the road surface 1 to converge on both sides of the road edge 2. The stainless steel protective inclined plate 301 is installed on the outside of the road edge 2 at a specific angle. The water permeable hole 302 on its inclined surface allows rainwater to pass through and intercepts large particles such as leaves and plastic bags. The rainwater flows into the V-shaped water collection trough 306 through the water permeable hole 302. The hydrophobic layer 307 coated on the inner wall of the V-shaped water collection trough 306 reduces water flow resistance, allowing rainwater to flow to the bottom of the trough at a faster speed. After the filter screen 308 connected to the bottom of the trough further intercepts fine debris, the rainwater enters the trapezoidal filter chamber 309. The bottom of the trapezoidal filter chamber 309 is arranged with a coarse filter layer 310, a medium filter layer 311, and a fine filter layer 312 from top to bottom, forming a three-stage filtration system of coarse-medium-fine filtration. The coarse filter layer 310 intercepts large particles of silt, the medium filter layer 311 adsorbs heavy metal ions in the rainwater, and the fine filter layer 312 removes fine suspended solids. The purified rainwater flows into the buffer tank 402 through the connecting pipe 401. The guide baffle 405 on the inner wall of the buffer tank 402 corresponds to the outlet of the connecting pipe 401 on both sides, diverting water from different directions to avoid water flow collision and ensuring that the rainwater enters the buffer tank 402 smoothly. When the water level in the buffer tank 402 is low, rainwater flows into the storage tank 501 through the water supply pipe 403 and the first one-way valve 404. When the second water level sensor 406 detects that the water level in the buffer tank 402 exceeds the set value, the solenoid valve 409 opens, and the first external pipeline 407 drains directly into the municipal drainage pipeline through the second one-way valve 408, forming a dual path with the siphon pipeline 503 to cope with the large flow of rainstorms. After the storage tank 501 collects rainwater, when the water level reaches the critical height of the siphon column 502, a vacuum siphon effect is formed in the siphon pipeline 503, quickly discharging the rainwater through the second external pipeline 504. This eliminates the need for a water pump, making it energy-saving and efficient. During the water collection and filtration process, the first water level sensor 321 monitors the water level above the V-shaped water collection tank 306 in real time. When the water level is too high, the servo motor 315 is triggered to start. The servo motor 315 drives the reciprocating screw 314 to rotate, and the sleeve block 317 moves back and forth along the guide column 316. This causes the inclined cleaning brush 319 and the bottom cleaning brush 320 on the L-shaped connecting plate 318 to simultaneously brush the inclined surface of the stainless steel protective inclined plate 301 and the surface of the filter screen 308, preventing debris from accumulating and clogging. Through the coordinated operation of water collection, filtration, buffer diversion, siphon drainage, and automatic cleaning, this system achieves efficient drainage during rainstorms, avoids flooding, and improves rainwater purification capabilities.

[0029] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A municipal road drainage system, comprising a road surface (1), a buffer diversion module (4), and a storage and drainage module (5), characterized in that: Two curbs (2) are fixedly connected to the upper surface of the road surface (1). Each curb (2) is provided with a water collection component (3) on its exterior. The water collection component (3) includes a stainless steel protective inclined plate (301) installed on the curb (2) and multiple water-permeable holes (302) opened on the inclined surface of the stainless steel protective inclined plate (301). A V-shaped water collection groove (306) is opened on the upper surface of the road surface (1). The inner wall of the V-shaped water collection groove (306) is coated with a hydrophobic layer (307). A filter screen (308) is connected to the bottom end of the V-shaped water collection groove (306). A trapezoidal filter chamber (309) is opened below the filter screen (308). A coarse filter layer (310), a medium filter layer (311), and a fine filter layer (312) are installed in sequence at the bottom of the trapezoidal filter chamber (309). The buffer diversion module (4) includes a buffer box (402) fixedly connected to the bottom surface of the road surface (1). Connecting pipes (401) are connected to both sides of the buffer box (402). The top ends of the two connecting pipes (401) are respectively connected to the interior of two trapezoidal filter chambers (309). A water supply pipe (403) is connected to the bottom of the buffer box (402). A first one-way valve (404) is installed on a section of the water supply pipe (403). The storage and drainage module... Block (5) includes a storage tank (501), the output end of the water supply pipe (403) is connected to the interior of the storage tank (501), a siphon column (502) is installed at the bottom of the storage tank (501), a siphon pipe (503) is opened inside the siphon column (502), one end of the siphon pipe (503) is connected to the interior of the storage tank (501), and the other end of the siphon pipe (503) is connected to a second external pipe (504).

2. A municipal road drainage system according to claim 1, characterized in that: The bottom end of the stainless steel protective inclined plate (301) is fixedly connected to a plug (303), the upper surface of the road surface (1) is provided with a slot (304), and the top of the stainless steel protective inclined plate (301) is installed with a connecting piece (305). The stainless steel protective inclined plate (301) is fixedly connected between the road surface (1) and the curb (2) through the plug (303), the slot (304) and the connecting piece (305).

3. A municipal road drainage system according to claim 1, characterized in that: The coarse filter layer (310) is preferably a volcanic rock layer, the medium filter layer (311) is preferably a zeolite layer, and the fine filter layer (312) is preferably a PP cotton filter element, and the layers are separated by a stainless steel screen.

4. A municipal road drainage system according to claim 1, characterized in that: The curb (2) has a reserved groove (313) inside. A reciprocating screw (314) is rotatably sleeved on the inner wall of the reserved groove (313). A servo motor (315) is fixedly connected to the outer surface of the curb (2). The output end of the servo motor (315) is fixedly connected to the shaft end of the reciprocating screw (314). A sleeve block (317) is threadedly connected to the outer surface of the reciprocating screw (314).

5. A municipal road drainage system according to claim 4, characterized in that: The inner wall of the reserved groove (313) is fixedly connected to a guide post (316), the inner wall of the sleeve block (317) is slidably sleeved on the outer surface of the guide post (316), and the other end of the sleeve block (317) is fixedly connected to an L-shaped connecting plate (318).

6. A municipal road drainage system according to claim 5, characterized in that: The L-shaped connecting plate (318) is fixedly connected to two ends with a bevel cleaning brush (319) and a bottom cleaning brush (320). The bevel cleaning brush (319) is adapted to the stainless steel protective bevel plate (301), and the bottom cleaning brush (320) is adapted to the filter screen (308).

7. A municipal road drainage system according to claim 4, characterized in that: The inner top wall of the reserved groove (313) is inlaid with a first water level sensor (321), which is electrically connected to a servo motor (315). An arc-shaped guide slope (322) is provided at the bottom of the reserved groove (313).

8. A municipal road drainage system according to claim 1, characterized in that: The inner wall of the buffer box (402) is fixedly connected to two flow guide baffles (405), and the positions of the two flow guide baffles (405) are respectively adapted to the positions of the output ends of the two connecting pipes (401).

9. A municipal road drainage system according to claim 1, characterized in that: The inner wall of the buffer tank (402) is embedded with a second water level sensor (406). The top of the buffer tank (402) is connected to a first external pipeline (407). A second check valve (408) and a solenoid valve (409) are installed on the pipe section of the first external pipeline (407). The output ends of the first external pipeline (407) and the second external pipeline (504) are respectively connected to the municipal drainage pipeline.

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