Rainwater collecting and filtering device for road sewer

Abstract

The invention relates to a rainwater collecting and filtering device, in particular to a road sewer rainwater collecting and filtering device which comprises a filter screen mechanism, a synchronous belt device comprises a driving shaft and a driven shaft, the two ends of the driving shaft are fixedly sleeved with driving synchronous wheels, and the two ends of the driven shaft are fixedly sleeved with driven synchronous wheels. The driving synchronous wheel and the driven synchronous wheel are in transmission through synchronous belts, the two synchronous belts are fixedly arranged through a filter screen, the sewer is shielded by the filter screen in the longitudinal direction, the driving shaft is driven by a driving mechanism to rotate, and the driving mechanism is driven by water flow. A material receiving net bag is arranged at the discharging end of the synchronous belt device, and the top end of the material receiving net bag is in contact fit with the outer side face of the filter screen. By means of the rainwater collecting device, garbage in rainwater can be collected through the filter screen, meanwhile, the power of water can be used as driving force, conveying of the filter screen is achieved, the filtered garbage is conveyed into the material receiving net bag, and back flushing is conducted on the filter screen.

Description

Technical Field

[0001] This invention pertains to rainwater collection and filtration devices, specifically a rainwater collection and filtration device for highway sewers. Background Technology

[0002] With the acceleration of urbanization, the impermeable surface area has increased dramatically, leading to increased surface runoff and shortened runoff time during heavy rains, posing a severe challenge to urban drainage systems. As the urban transportation artery and an important water catchment area, the drainage efficiency of highways is directly related to road safety and urban flood control capabilities.

[0003] Currently, to initially purify rainwater and prevent solid waste from entering downstream pipes or natural water bodies, a common practice is to install filtration devices in the sewers along both sides of roads, with filter screens being the most prevalent. These simple filter screens can effectively intercept larger floating objects and suspended debris such as plastic bags, leaves, paper, and plastic bottles, thus reducing the burden of subsequent drainage pipe siltation and water pollution to some extent.

[0004] However, in practical applications, this traditional filter method has a significant drawback: during heavy rainfall, an irreconcilable contradiction arises between its filtration efficiency and drainage efficiency. Specifically, the filter works normally at the beginning of rainfall or when the rainfall is light. But when the rainfall increases and the water flow is rapid, rainwater carries a large amount of debris towards the filter. Under the impact of the high-speed water flow, this debris is not intercepted in front of the filter, but is tightly "attached" or "adsorbed" onto the surface of the filter mesh, forming a dense layer of pollutants.

[0005] This covering layer severely clogs the water passages of the filter screen, causing a sharp reduction in the effective water passage area of ​​the filter screen and a significant decrease in drainage efficiency. As a result, rainwater cannot pass through the clogged filter screen into the water supply system in a timely manner, causing water accumulation in sewers or on the road. In severe cases, it may lead to road flooding, affecting traffic safety and citizens' travel. Summary of the Invention

[0006] This invention provides a rainwater collection and filtration device for highway sewers to overcome the deficiencies in the prior art.

[0007] This invention is achieved through the following technical solution: A rainwater collection and filtration device for highway sewers includes a filter screen mechanism installed in the sewer, which is connected to an underground water storage tank. The filter screen mechanism includes a filter screen and a synchronous belt device that slopes upwards along the water flow direction. The synchronous belt device includes a drive shaft and a driven shaft. The two ends of the drive shaft are fixedly fitted with main synchronous pulleys, and the two ends of the driven shaft are fixedly fitted with secondary synchronous pulleys. The main and secondary synchronous pulleys are driven by a synchronous belt, and the two synchronous belts are fixedly connected by the filter screen. The sewer is blocked longitudinally by the filter screen. The drive shaft is driven to rotate by a drive mechanism driven by water flow. The discharge end of the synchronous belt device is provided with a receiving net, and the top of the receiving net is in contact with the outer surface of the filter screen.

[0008] In use, rainwater carrying garbage flows through the sewer and prepares to flow into the storage tank. When the rainwater passes through the filter screen, the rainwater passes through the filter screen while the garbage is blocked on the filter screen. The flow of rainwater drives the drive mechanism, which drives the rotation of the drive shaft. The rotation of the drive shaft drives the rotation of the drive wheel, which in turn drives the synchronous belt, thereby driving the filter screen to move. This allows the garbage on the filter screen to enter the receiving net bag under the transmission of the filter screen, realizing the dumping of garbage on the filter screen. At the same time, the back of the filter screen, after the garbage has been conveyed, faces the water flow, which can achieve further cleaning of the filter screen, thereby ensuring better filtration effect of the filter screen.

[0009] Preferably, a water conveying trough is provided downward in the sewer, and the water conveying trough is connected to the water storage tank. The filter screen mechanism is provided in two parts and is symmetrically arranged along the vertical axis of the water conveying trough. Since the water in the sewer flows into the water conveying trough under the action of gravity, and the filter screen device is provided on both sides of the water conveying trough, it can achieve filtration while ensuring better downward flow of water.

[0010] Preferably, each of the filter screen mechanisms includes two synchronous belt devices, which are located on the same inclined plane in the longitudinal direction. The driving shaft and driven shaft of the synchronous belt device are coaxially and fixedly connected via corresponding connecting shafts. The filter screens between the two filter screen mechanisms are covered by a fixedly installed intermediate mesh, which is located above the filter screens.

[0011] Preferably, the drive mechanism includes an impeller disposed in the water conveying tank and a rotating shaft coaxially and vertically disposed on the impeller. A first driving bevel gear is coaxially and fixedly connected to the rotating shaft. A first driven bevel gear meshes with both sides of the first driving bevel gear. A transverse transmission shaft is vertically connected to the center of the first driven bevel gear. Operating chambers are opened on both sides of the water conveying tank. The operating chambers are connected to the water conveying tank and the connecting shaft through transverse and vertical strip grooves, respectively. The other end of the transverse transmission shaft passes through the strip groove and is fixedly sleeved with a second driving bevel gear located in the operating chamber. The transverse transmission shaft and the strip groove are rotatably connected through a sealed bearing. A second driven bevel gear meshing with the second driving bevel gear is also disposed in the operating chamber. A vertical transmission shaft is vertically connected upward to the second driven bevel gear. The vertical transmission shaft passes through the vertical strip groove and is fixedly sleeved with a third driving bevel gear. The vertical transmission shaft is rotatably connected to the vertical strip groove through a sealed bearing. A third driven bevel gear meshing with the third driving bevel gear is fixedly sleeved on the connecting shaft. The downward flow of water in the water delivery tank drives the impeller to rotate. The rotation of the impeller drives the rotation of the rotating shaft on the impeller. The rotation of the rotating shaft drives the rotation of the first driving bevel gear. The rotation of the first driving bevel gear drives the rotation of the first driven bevel gear. The two first driven bevel gears rotate in opposite directions. The rotation of the first driven bevel gear drives the rotation of the horizontal transmission shaft. The rotation of the horizontal transmission shaft drives the rotation of the second driving bevel gear. The rotation of the second driving bevel gear drives the rotation of the second driven bevel gear. The rotation of the second driven bevel gear drives the rotation of the vertical transmission shaft. The rotation of the vertical transmission shaft drives the rotation of the third driving bevel gear. The rotation of the third driving bevel gear drives the rotation of the third driven bevel gear. In turn, the two connecting shafts rotate in opposite directions, realizing synchronous and reverse transmission of the synchronous belts on both sides. This, in turn, synchronously and reversely conveys the waste to the receiving net bag.

[0012] Preferably, the water supply tank has grooves on both sides, and an eccentric water receiving tank is installed in the groove. The bottom surface of the water receiving tank is an upward sloping surface from the outside to the inside. The water receiving tank is rotatably connected to the groove by a pin. The groove is inclined downward and has a groove that communicates with the water supply tank. An eccentric block is fixedly connected to the opposite side of the bottom surface of the water receiving tank. A limiting block is fixedly installed in the groove and located on the top surface of the water receiving tank. When the water receiving tank is empty, the top surface of the water receiving tank is pressed against the limiting block under the action of the eccentric block and the limiting block. When the water receiving tank is full of water, the water receiving tank tilts downward in the opposite direction and the bottom surface contacts the groove. When the rainfall is too light to drive the impeller, the rainwater is intercepted by the groove before flowing through the water delivery channel and flows into the receiving tank. When the receiving tank is empty, the top surface of the receiving tank is squeezed by the eccentric block and the limiting block. When the receiving tank is full, the receiving tank tilts downward in the opposite direction and the bottom surface contacts the inclined groove. Therefore, when the receiving tank is full, the rainwater can be poured into the inclined groove, thereby realizing a sudden surge of a large amount of water from the water delivery channel, which in turn drives the impeller to rotate and realizes the transmission of the filter screen. At the same time, when the rainfall is too heavy, while the rainwater can flow into the groove, some rainwater bypasses the groove and directly enters the water delivery channel without affecting its normal drainage.

[0013] Preferably, the bottom of the sewer also has an inner groove facing downwards, with the main synchronous pulley located in the inner groove. A vertical through-hole communicates with the inner groove, and a baffle is provided on the top surface of the inner groove. The baffle has through-hole grooves for the synchronous belt and filter screen to pass through. The inner groove allows the filter screen to extend below the bottom of the sewer, thus improving its filtration effect. The baffle prevents water from entering the inner groove. Preferably, the lower end of the inner tank is connected to a drainage trough, and the lower part of the drainage trough is connected to the water conveying trough. The drainage trough allows water that has seeped in through the strip to flow back into the water conveying trough.

[0014] Preferably, overflow channels are also provided on both sides of the sidewall of the water conveying channel. The overflow channels are located above the impeller, and the lower part of the overflow channels is connected to the water storage tank. The overflow channels ensure that when there is excessive rainfall, excess rainwater can directly enter the water storage tank through the overflow channels, avoiding slow drainage at the impeller and rainwater accumulation.

[0015] Preferably, a baffle plate is vertically fixed inside the sewer. The baffle plate is located above the center of the top surface of the water conveying tank and extends to the inner walls of the front and rear sides of the sewer. A support plate with its outer end bent upward is fixedly installed on the upper part of the baffle plate. A water outlet groove is opened on the support plate. A material receiving net is placed on the support plate. The baffle plate can prevent water entering from both sides from forming convection, while the support plate can support the material receiving net.

[0016] The beneficial effects of this invention are as follows: The use of this application can not only collect garbage in rainwater through the filter screen, but also use the power of water as a driving force to realize the transmission of the filter screen, convey the filtered garbage to the receiving net bag and backwash the filter screen, thereby ensuring that the rainwater flows smoothly through the filter screen.

[0017] In addition, when the rainfall is light, the water tank can store water to reach the amount required for the impeller to rotate, and then it can discharge itself to enable the impeller to rotate, thus avoiding the accumulation of debris on the filter screen caused by the impeller not rotating when the rainfall is light. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the filter arrangement; Figure 3 yes Figure 1 A magnified view of part of I; Figure 4 yes Figure 1 Part II enlarged view.

[0020] As shown in the figure: 1. Sewer, 2. Water storage tank, 3. Filter screen, 4. Drive shaft, 5. Synchronous belt, 6. Water conveying trough, 7. Impeller, 8. Rotating shaft, 9. First driving bevel gear, 10. First driven bevel gear, 11. Second driving bevel gear, 12. Second driven bevel gear, 13. Third driving bevel gear, 14. Third driven bevel gear, 15. Groove, 16. Water receiving tank, 17. Inclined groove, 18. Eccentric block, 19. Limiting block, 20. Inner groove, 21. Baffle, 22. Drainage trough, 23. Overflow trough, 24. Water baffle, 25. Material receiving net, 26. Support plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] A rainwater collection and filtration device for highway sewers, such as Figure 1-4 As shown. It includes a filter screen 3 mechanism installed within the sewer 1. A water conveying trough 6 is installed downwards within the sewer 1. The upper part of the water conveying trough 6 has a flared opening that is wider at the top and narrower at the bottom, allowing for faster water flow. The water conveying trough 6 is connected to a water storage tank 2. Two filter screens 3 mechanisms are provided and symmetrically arranged along the vertical axis of the water conveying trough 6.

[0023] The filter screen 3 mechanism includes a filter screen 3 and a synchronous belt 5 device that slopes upwards along the water flow direction. The upper part of the synchronous belt 5 device is located near the top surface of the sewer 1 and is designed to allow for the passage of debris. The synchronous belt 5 device includes a drive shaft 4 and a driven shaft. The two ends of the drive shaft 4 are fixedly fitted with main synchronous pulleys, and the two ends of the driven shaft are fixedly fitted with secondary synchronous pulleys. The main synchronous pulleys and secondary synchronous pulleys are driven by the synchronous belt 5. The two synchronous belts 5 are fixedly connected by the filter screen 3. The sewer 1 is blocked longitudinally by the filter screen 3. The drive shaft 4 is driven to rotate by a drive mechanism driven by water flow. The discharge end of the synchronous belt 5 device is provided with a receiving net 25, and the top of the receiving net 25 contacts and engages with the outer surface of the filter screen 3.

[0024] In use, rainwater carrying garbage flows through the sewer 1 and prepares to flow into the storage tank 2. When the rainwater passes through the filter screen 3, the rainwater passes through the filter screen 3, while the garbage is blocked on the filter screen 3. The flow of rainwater drives the drive mechanism, which drives the rotation of the drive shaft 4. The rotation of the drive shaft 4 drives the rotation of the drive wheel, which in turn drives the transmission of the synchronous belt 5, thereby driving the conveying of the filter screen 3. This allows the garbage on the filter screen 3 to enter the receiving net bag 25 under the transmission of the filter screen 3, realizing the dumping of the garbage on the filter screen 3. At the same time, the reverse side of the filter screen 3, after the garbage has been conveyed, faces the water flow, which can realize further cleaning of the filter screen 3, thereby ensuring a better filtration effect of the filter screen 3.

[0025] As the water in the sewer 1 flows into the water delivery tank 6 under the action of gravity, and the water delivery tank 6 is equipped with filter screens 3 on both sides, it can achieve filtration while ensuring better downward flow of water.

[0026] Each of the filter screen 3 mechanisms includes two synchronous belt 5 devices, which are located on the same inclined plane in the longitudinal direction. The driving shaft 4 and driven shaft of the synchronous belt 5 devices are coaxially and fixedly connected via corresponding connecting shafts. The filter screens 3 between the two filter screen 3 mechanisms are covered by a fixedly installed intermediate net, which is located above the filter screens 3.

[0027] The drive mechanism includes an impeller 7 disposed within a water tank 6 and a rotating shaft 8 coaxially and vertically disposed on the impeller 7. A first driving bevel gear 9 is coaxially and fixedly connected to the rotating shaft 8. A first driven bevel gear 10 meshes with both sides of the first driving bevel gear 9. A transverse transmission shaft is vertically connected to the center of the first driven bevel gear. Operating chambers are provided on both sides of the water tank 6. The operating chambers are connected to the water tank 6 and the connecting shaft through transverse and vertical strip through slots, respectively. The other end of the transverse transmission shaft passes through the strip through slot and is fixedly sleeved with a positioning device. The second driving bevel gear 11 in the operating cavity is rotatably connected to the transverse transmission shaft and the strip-shaped through slot via a sealed bearing. The operating cavity is also provided with a second driven bevel gear 12 that meshes with the second driving bevel gear 11. The second driven bevel gear 12 is vertically connected to a vertical transmission shaft. The vertical transmission shaft passes through the vertical strip-shaped through slot and is fixedly sleeved with a third driving bevel gear 13. The vertical transmission shaft is rotatably connected to the vertical strip-shaped through slot via a sealed bearing. A third driven bevel gear 14 that meshes with the third driving bevel gear 13 is fixedly sleeved on the connecting shaft. The downward flow of water in the water delivery tank 6 drives the impeller 7 to rotate. The rotation of the impeller 7 drives the rotation of the rotating shaft 8 on the impeller 7. The rotation of the rotating shaft 8 drives the first driving bevel gear 9 to rotate. The rotation of the first driving bevel gear 9 drives the rotation of the first driven bevel gear 10. The two first driven bevel gears 10 rotate in opposite directions. The rotation of the first driven bevel gear 10 drives the rotation of the transverse transmission shaft. The rotation of the transverse transmission shaft drives the rotation of the second driving bevel gear 11. The rotation of the second driving bevel gear 11 drives the rotation of the second driven bevel gear 12. The rotation of the second driven bevel gear 12 drives the rotation of the vertical transmission shaft. The rotation of the vertical transmission shaft drives the rotation of the third driving bevel gear 13. The rotation of the third driving bevel gear 13 drives the rotation of the third driven bevel gear 14. This, in turn, drives the two connecting shafts to rotate in opposite directions, so that the synchronous belts 5 on both sides can rotate synchronously and in reverse. This allows the filter screen 3 to synchronously and in reverse convey the garbage into the receiving net bag 25.

[0028] The water supply tank 6 has grooves 15 on both sides, and an eccentric water receiving tank 16 is provided in the grooves 15. The bottom surface of the water receiving tank 16 is an inclined surface that slopes upward from the outside to the inside. The water receiving tank 16 is rotatably connected to the groove 15 by a pin. The groove 15 is inclined downward and has a groove 17 that communicates with the water supply tank 6. An eccentric block 18 is fixedly connected to the opposite side of the bottom surface of the water receiving tank 16. A limiting block 19 is fixedly provided in the groove 15 and located on the top surface of the water receiving tank 16. When the water receiving tank 16 is empty, the top surface of the water receiving tank 16 is pressed against the limiting block 19 by the action of the eccentric block 18 and the limiting block 19. When the water receiving tank 16 is full of water, the water receiving tank 16 tilts downward in the opposite direction and the bottom surface contacts the groove 17. When the rainwater is too light to drive the impeller 7, the rainwater is intercepted by the groove 15 before flowing through the water delivery trough 6 and flows into the water receiving tank 16. When the water receiving tank 16 is empty, the top surface of the water receiving tank 16 is pressed against the limiting block 19 by the action of the eccentric block 18 and the limiting block 19. When the water receiving tank 16 is full, the water receiving tank 16 tilts downward in the opposite direction and the bottom surface contacts the inclined groove 17. Therefore, when the water receiving tank 16 is full, the rainwater can be poured into the inclined groove 17, thereby realizing a sudden surge of a large amount of water from the water delivery trough 6, which in turn drives the rotation of the impeller 7 and realizes the transmission of the filter screen 3. At the same time, when the rainwater is too heavy, while the rainwater can flow into the groove 15, some of the rainwater bypasses the groove 15 and directly enters the water delivery trough 6 without affecting its normal drainage.

[0029] The sewer 1 has an inner groove 20 extending downwards from its bottom surface. The main synchronous pulley is located in the inner groove 20, and a vertical strip-shaped through-hole communicates with the inner groove 20. A baffle 21 is provided on the top surface of the inner groove 20, and a through-hole strip-shaped groove is provided on the baffle 21 for the synchronous belt 5 and the filter screen 3 to pass through. The lower end of the inner groove 20 is connected to a drainage trough 22, and the lower part of the drainage trough 22 is connected to the water supply trough 6. The inner groove 20 allows the filter screen 3 to extend below the bottom surface of the sewer 1, thereby enabling the filter screen 3 to achieve a better filtration effect. The baffle 21 prevents water from entering the inner groove 20, and the drainage trough 22 allows water that has seeped in through the through-hole strip to flow back to the water supply trough 6.

[0030] Overflow channels 23 are also provided on both sides of the sidewall of the water conveying channel 6. The overflow channels 23 are located above the impeller 7, and the lower part of the overflow channels 23 is connected to the water storage tank 2. The overflow channels 23 can ensure that when there is too much rain, the excess rainwater can directly enter the water storage tank 2 through the overflow channels 23, avoiding the accumulation of rainwater due to slow drainage at the impeller 7.

[0031] A water baffle 24 is vertically fixed inside the sewer 1. The water baffle 24 is located above the center of the top surface of the water conveying tank 6 and extends to the inner walls of the front and rear sides of the sewer 1. A support plate 26 with its outer end bent upward is fixedly installed on the upper part of the water baffle 24. A water outlet groove is opened on the support plate 26. A material receiving net 25 is placed on the support plate 26. The water baffle 24 can prevent water entering from both sides from forming convection, while the support plate 26 can support the material receiving net 25.

[0032] The use of this application not only enables the collection of garbage in rainwater through the filter screen 3, but also utilizes the power of water as a driving force to convey the filter screen 3, transferring the filtered garbage into the receiving net bag 25 and backwashing the filter screen 3.

[0033] In addition, when the rainfall is not heavy, the water tank 16 can store water to reach the amount of water required for the impeller 7 to rotate. Then, the water can be discharged by itself to achieve the rotation of the impeller 7, thus avoiding the accumulation of debris on the filter screen 3 caused by the impeller 7 not rotating when the rainfall is light.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rainwater collection and filtration device for highway sewers, characterized in that: The system includes a filter screen mechanism installed in a sewer connected to an underground water storage tank. The filter screen mechanism includes a filter screen and a synchronous belt device that slopes upwards along the water flow direction. The synchronous belt device includes a drive shaft and a driven shaft. The two ends of the drive shaft are fixedly fitted with main synchronous pulleys, and the two ends of the driven shaft are fixedly fitted with secondary synchronous pulleys. The main and secondary synchronous pulleys are driven by a synchronous belt, and the two synchronous belts are fixedly connected by the filter screen. The sewer is blocked longitudinally by the filter screen. The drive shaft is driven to rotate by a drive mechanism driven by water flow. The discharge end of the synchronous belt device is provided with a receiving net, and the top of the receiving net is in contact with the outer surface of the filter screen.

2. The rainwater collection and filtration device for highway sewers according to claim 1, characterized in that: A water conveying trough is installed downward inside the sewer, and the water conveying trough is connected to the water storage tank. There are two filter screens, which are symmetrically arranged along the vertical axis of the water conveying trough.

3. The rainwater collection and filtration device for highway sewers according to claim 2, characterized in that: Each of the filter screen mechanisms includes two synchronous belt devices, which are located on the same inclined plane in the longitudinal direction. The driving shaft and driven shaft of the synchronous belt device are coaxially and fixedly connected via corresponding connecting shafts. The filter screens between the two filter screen mechanisms are covered by a fixedly installed intermediate mesh, which is located above the filter screens.

4. The rainwater collection and filtration device for highway sewers according to claim 3, characterized in that: The drive mechanism includes an impeller disposed in a water conveying tank and a rotating shaft coaxially and vertically disposed on the impeller. A first driving bevel gear is coaxially and fixedly connected to the rotating shaft. A first driven bevel gear meshes with both sides of the first driving bevel gear. A transverse transmission shaft is vertically connected to the center of the first driven bevel gear. Operating chambers are opened on both sides of the water conveying tank. The operating chambers are connected to the water conveying tank and the connecting shaft through transverse and vertical strip-shaped through slots, respectively. The other end of the transverse transmission shaft passes through the strip-shaped through slot and is fixedly sleeved with a second driving bevel gear located in the operating chamber. The transverse transmission shaft and the strip-shaped through slot are rotatably connected through a sealed bearing. A second driven bevel gear meshing with the second driving bevel gear is also disposed in the operating chamber. A vertical transmission shaft is vertically connected upward to the second driven bevel gear. The vertical transmission shaft passes through the vertical strip-shaped through slot and is fixedly sleeved with a third driving bevel gear. The vertical transmission shaft is rotatably connected to the vertical strip-shaped through slot through a sealed bearing. A third driven bevel gear meshing with the third driving bevel gear is fixedly sleeved on the connecting shaft.

5. The rainwater collection and filtration device for highway sewers according to claim 4, characterized in that: The water tank has grooves on both sides, and an eccentric water receiving tank is installed in the groove. The bottom surface of the water receiving tank is an upward sloping surface from the outside to the inside. The water receiving tank is rotatably connected to the groove by a pin. The groove is inclined downward and has a sloping groove that runs through the water tank. An eccentric block is fixedly connected to the opposite side of the bottom surface of the water receiving tank. A limiting block is fixedly installed in the groove and located on the top surface of the water receiving tank. When the water receiving tank is empty, the top surface of the water receiving tank is pressed against the limiting block under the action of the eccentric block and the limiting block. When the water receiving tank is full of water, the water receiving tank tilts downward in the opposite direction and the bottom surface contacts the sloping groove.

6. The rainwater collection and filtration device for highway sewers according to claim 5, characterized in that: The bottom of the sewer is also provided with an inner groove, the main synchronous pulley is located in the inner groove, the vertical strip through groove is connected to the inner groove, the top surface of the inner groove is provided with a baffle, and the baffle is provided with a through strip groove through which the synchronous belt and filter screen pass.

7. The rainwater collection and filtration device for highway sewers according to claim 6, characterized in that: The lower end of the inner tank is connected to a drainage trough, and the lower part of the drainage trough is connected to the water supply trough.

8. The rainwater collection and filtration device for highway sewers according to claim 2, characterized in that: Overflow channels are also provided on both sides of the sidewall of the water conveying channel. The overflow channels are located above the impeller and the lower part of the overflow channels is connected to the water storage tank.

9. The rainwater collection and filtration device for highway sewers according to claim 1, characterized in that: A water baffle is vertically fixed inside the sewer. The water baffle is located above the center of the top surface of the water conveying tank and extends to the inner walls of the front and rear sides of the sewer. A support plate with its outer end bent upward is fixedly installed on the upper part of the water baffle. A water outlet groove is opened on the support plate, and a material receiving net is placed on the support plate.

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