Roadbed rainwater impurity separation device for highway bridge

Abstract

The invention relates to the technical field of rainwater treatment, in particular to a roadbed rainwater impurity separation device for a highway bridge, which comprises a bridge body, a filtering anti-blocking mechanism and a recycling mechanism, a plurality of symmetrically-distributed water collecting grooves are formed in the upper side of the bridge body, rectangular drainage plates are installed at the upper ends of the water collecting grooves, drainage pipes are arranged on the bottom walls of the water collecting grooves in a penetrating mode, a collecting pipe is arranged among the drainage pipes located on the same side, the collecting pipe is communicated with a slag discharging pipe through a rectangular pipe, and a water collecting tank is arranged at the bottom of the collecting pipe. According to the roadbed rainwater and impurity separation device for the highway bridge, the highway bridge rainwater impact force is utilized and combined with the transmission element, impurity cleaning and collecting can be automatically carried out on the filtering portion of bridge rainwater, the rainwater filtering efficiency is ensured, and the manual labor intensity is reduced; overflow treatment and spraying dust fall judgment can be automatically conducted on collected bridge rainwater, and the device is high in intelligent degree.

Description

Technical Field

[0001] The invention relates to the technical field of rainwater treatment, in particular to a roadbed rainwater impurity separation device for highway bridges. Background Art

[0002] In order to prevent water accumulation on the road from affecting the normal driving of passing vehicles, drainage designs are adopted on both sides of the bridge roadbed. For example, the patent document with the authorization announcement number CN219604146U discloses a highway bridge drainage structure, including a bridge body, the front and rear ends of the bridge body are fixedly connected to the curb, the upper front and rear ends of the bridge body are provided with drainage grooves, the lower groove walls of the two drainage grooves are fixedly connected with a plurality of filtering mechanisms, the upper ends of the plurality of filtering mechanisms are provided with cover plates, the upper middle parts of the upper ends of the plurality of cover plates are provided with leakage grooves, the upper part of the front groove wall of the front drainage groove and the upper part of the rear groove wall of the rear drainage groove are fixedly connected with a plurality of drainage pipes, and the middle parts of the lower groove walls of the two drainage grooves are fixedly connected with a spray mechanism. By setting a filtering mechanism and a supporting frame, this scheme can filter and collect impurities in the water to prevent the drainage pipes from being blocked by impurities. By setting a spray mechanism, the bridge deck can be sprayed to reduce dust, thereby improving the utilization rate of water resources. When the scheme is implemented, since the filter in the filter mechanism is a flat design, when filtering and collecting rainwater on the highway bridge, the mud and impurities in the rainwater will stay on the surface of the filter. As the impurities remaining on the surface of the filter gradually increase, the filtering speed of the filter for impurities in the rainwater on the highway bridge is affected, and maintenance personnel are required to regularly clean the impurities from the filter in the later stage, which increases the labor intensity. At the same time, the scheme adopts a spray mechanism to recycle the collected rainwater for spray dust reduction. The spray mechanism consists of a water pump, a water pumping filter pipe, a water pipe, a spray head and a support block. When too much rainwater is recycled, there is overflow. In addition, each time the dust is sprayed, personnel need to detect the humidity value in the air around the highway bridge and determine whether spray dust removal is needed based on the test results. The intelligence level is relatively low. Summary of the invention

[0003] The present invention provides a roadbed rainwater impurity separation device for a highway bridge. The device utilizes the impact force of rainwater on the highway bridge and combines with a transmission element to automatically clean and collect impurities in the filtering part of the bridge rainwater, thereby ensuring the rainwater filtration efficiency and reducing manual labor intensity. At the same time, the device can automatically perform overflow processing and spray dust reduction judgment on the collected bridge rainwater through a detection element, and the device has a high degree of intelligence.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a roadbed rainwater impurity separation device for a highway bridge, comprising a bridge body, a filtering and anti-blocking mechanism, and a recycling mechanism; There are multiple symmetrically distributed water collection tanks on the upper side of the bridge body. A rectangular drain plate is installed on the upper end of the water collection tank. Drain pipes are penetrated through the bottom wall of the water collection tank. A common manifold is provided between multiple drainage pipes on the same side. The manifold is connected to a slag discharge pipe through a rectangular pipe. A water collection tank is provided at the bottom of the manifold. The filtering anti-blocking mechanism includes a cross frame, a rotating shaft, a circular filter plate, a driving blade and a cleaning assembly. The cross frame and the circular filter plate are respectively arranged at the lower end of the inner part of the manifold. The cross frame is located below the adjacent circular filter plate. The middle part of the cross frame is rotatably connected with the rotating shaft through a bearing. The upper end of the rotating shaft passes through the adjacent circular filter plate and is provided with a cleaning assembly. The lower side of the rotating shaft is provided with three driving blades. The recycling mechanism is used to automatically distribute and reuse the water in the water collection tank.

[0005] Furthermore, the filtering anti-blocking mechanism also includes a partition door, two arc-shaped telescopic columns and two springs. The partition doors are rotatably connected to the inner upper end of the rectangular tube through two rotating shafts. The interior of the slag discharge pipe is fixedly connected to the adjacent partition door through two arc-shaped telescopic columns and two springs. The two springs are movably connected to the outer ends of the adjacent arc-shaped telescopic columns. The arc centers of the fixed end and the telescopic end of the two arc-shaped telescopic columns coincide with the axis center of the adjacent rotating shaft two.

[0006] Furthermore, the cleaning component includes an annular seat, an arc-shaped hollow brush, an arc-shaped solid brush, an arc-shaped telescopic column and a spring. The annular seats are respectively arranged at the upper end of the rotating shaft, the outer side of the annular seat is provided with an arc-shaped hollow brush, the inner side of the arc-shaped hollow brush is slidably connected with an arc-shaped solid brush, an arc-shaped telescopic column and a spring are provided between the arc-shaped solid brush and the adjacent arc-shaped hollow brush, the spring is movably connected to the outer end of the adjacent arc-shaped telescopic column, the arc center of the fixed end and the telescopic end of the arc-shaped telescopic column coincides with the arc center of the adjacent arc-shaped solid brush, and the arc-shaped solid brush is installed in cooperation with the adjacent partition door.

[0007] Furthermore, the recycling mechanism includes a water supply pipe, a water supply pump, a branch pipe and an atomizing nozzle. The water supply pipes are respectively penetrated through the lower end of the right wall of the water collecting tank. The water supply pipes are fixedly connected to the bridge body. A plurality of evenly distributed branch pipes are penetrated through the inner upper end of the water supply pipe. An atomizing nozzle is provided at one end of the branch pipe close to the center of the bridge body, and a water supply pump is connected in series at the lower end of the water supply pipe.

[0008] Furthermore, the recycling mechanism also includes a humidity sensor and a radar level gauge. The radar level gauges are respectively arranged on the upper side of the water collecting tank, and the humidity sensor is arranged on the outer side of the upper end of the water supply pipe.

[0009] Furthermore, the recycling mechanism also includes a delivery pipe and a solenoid valve. The delivery pipes are respectively arranged to penetrate the upper end of the right wall of the water collecting tank, and the middle part of the delivery pipes is connected in series with a solenoid valve.

[0010] Furthermore, the inner wall of the drain pipe is provided with a spiral guide piece.

[0011] Furthermore, the water collection tank is internally slidably connected with a foam suspension frame, the upper end of the foam suspension frame is provided with a plurality of evenly distributed blocking rods, the outer edge of the rectangular drain plate is provided with a plurality of evenly distributed movable holes, and the blocking rods are installed in coordination with adjacent movable holes.

[0012] Furthermore, a limiting ring is provided inside the water collecting trough, and the upper side of the limiting ring contacts the lower side of the adjacent rectangular drain plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The roadbed rainwater impurity separation device for highway bridges disclosed in the present invention utilizes the impact force of rainwater on the highway bridge when collecting rainwater. Through a cross frame, a rotating shaft, a circular filter plate, a driving blade, a cleaning component, a partition door, two arc-shaped telescopic columns and two springs, it can automatically clean and collect impurities in the filtering part of the bridge rainwater, thereby ensuring the rainwater filtration efficiency and reducing the labor intensity.

[0014] 2. The roadbed rainwater impurity separation device for highway bridges disclosed in the present invention can automatically handle overflow and spray dust reduction of collected bridge rainwater through humidity sensors, radar level gauges, delivery pipes and solenoid valves, and the device has a high degree of intelligence.

[0015] 3. The roadbed rainwater impurity separation device for highway bridges disclosed in the present invention, when the rainwater above the roadbed is heavy, uses the buoyancy of rainwater to expose the upper end of the blocking rod to the top of the rectangular drain board through the movable hole, foam suspension frame, blocking rod and limit ring, thereby blocking the larger impurities in the rainwater of the highway bridge roadbed above the rectangular drain board, avoiding the blockage of the rectangular drain board during the drainage process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the roadbed rainwater impurity separation device for highway bridges in the embodiment; Figure 2 It is a structural schematic diagram of another perspective of the roadbed rainwater impurity separation device for highway bridges in the embodiment; Figure 3 A schematic diagram of the structure of the recycling mechanism in the embodiment; Figure 4 A partial cross-sectional view of a manifold in an embodiment; Figure 5 is a cross-sectional view of a cleaning component in an embodiment; Figure 6 is a partial cross-sectional view of a bridge body in an embodiment; Figure 7 for Figure 2 Enlarged view of the area marked A.

[0017] In the figure: 1-bridge body, 2-water collecting trough, 3-rectangular drain plate, 4-drain pipe, 5-collecting pipe, 6-slag discharge pipe, 7-water collecting box, 8-filter anti-blocking mechanism, 81-cross frame, 82-rotating shaft, 83-circular filter plate, 84-driving blade, 85-cleaning component, 851-annular seat, 852-arc hollow brush, 853-arc solid brush, 854-arc telescopic column one, 855-spring one, 86-partition door, 87-arc telescopic column two, 88-spring two, 9-recycling mechanism, 91-water supply pipe, 92-water supply pump, 93-branch pipe, 94-atomizing nozzle, 95-humidity sensor, 96-radar liquid level gauge, 97-delivery pipe, 98-solenoid valve, 10-spiral guide plate, 11-moving hole, 12-foam suspension frame, 13-blocking rod, 14-limiting ring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-7 This embodiment provides a roadbed rainwater impurity separation device for a highway bridge, including a bridge body 1, a filtering and anti-blocking mechanism 8 and a recycling mechanism 9.

[0020] A plurality of symmetrically distributed water collecting grooves 2 are provided on the upper side of the bridge body 1, and a rectangular drain plate 3 is installed on the upper end of the water collecting grooves 2. A drain pipe 4 is penetrated through the bottom wall of the water collecting grooves 2. A common confluence pipe 5 is provided between the plurality of drain pipes 4 on the same side, and a slag discharge pipe 6 is provided in communication with the confluence pipe 5 through a rectangular tube. A water collecting box 7 is provided at the bottom of the confluence pipe 5, and a spiral guide sheet 10 is provided on the inner wall of the drain pipe 4. A foam suspension frame 12 is slidably connected to the inside of the water collecting groove 2, and a plurality of evenly distributed blocking rods 13 are provided on the upper end of the foam suspension frame 12. A plurality of evenly distributed moving holes 11 are provided on the outer edge of the rectangular drain plate 3, and the blocking rods 13 are installed in cooperation with adjacent moving holes 11. A limiting ring 14 is provided inside the water collecting groove 2, and the upper side of the limiting ring 14 contacts with the lower side of the adjacent rectangular drain plate 3, and the rectangular drain plate 3 installed in the water collecting groove 2 is vertically limited by the limiting ring 14. There are eight water collecting grooves 2 in this embodiment.

[0021] The filtering anti-blocking mechanism 8 includes a cross frame 81, a rotating shaft 82, a circular filter plate 83, a driving blade 84 and a cleaning assembly 85. The cross frame 81 and the circular filter plate 83 are respectively arranged at the lower end of the inner part of the manifold 5. The cross frame 81 is located below the adjacent circular filter plate 83. The middle part of the cross frame 81 is rotatably connected to the rotating shaft 82 through a bearing. The upper end of the rotating shaft 82 passes through the adjacent circular filter plate 83 and is provided with a cleaning assembly 85. The lower side of the rotating shaft 82 is provided with three The filtering anti-blocking mechanism 8 also includes a partition door 86, an arc-shaped telescopic column 87 and a spring 88. The partition door 86 is rotatably connected to the inner upper end of the rectangular tube through the second rotating shaft. The interior of the slag discharge pipe 6 is fixedly connected to the adjacent partition door 86 through the arc-shaped telescopic column 87 and the spring 88. The spring 88 is movably connected to the outer end of the adjacent arc-shaped telescopic column 87. The arc centers of the fixed end and the telescopic end of the arc-shaped telescopic column 87 coincide with the axis center of the adjacent rotating shaft 2.

[0022] The cleaning assembly 85 includes an annular seat 851, an arc-shaped hollow brush 852, an arc-shaped solid brush 853, an arc-shaped telescopic column 854 and a spring 855. The annular seat 851 is respectively arranged at the upper end of the rotating shaft 82. The outer side of the annular seat 851 is provided with an arc-shaped hollow brush 852. The interior of the arc-shaped hollow brush 852 is slidably connected with an arc-shaped solid brush 853. An arc-shaped telescopic column 854 and a spring 855 are provided between the arc-shaped solid brush 853 and the adjacent arc-shaped hollow brush 852. The spring 855 is movably connected to the outer end of the adjacent arc-shaped telescopic column 854. The arc centers of the fixed end and the telescopic end of the arc-shaped telescopic column 854 coincide with the arc center of the adjacent arc-shaped solid brush 853. The arc-shaped solid brush 853 is installed in cooperation with the adjacent partition door 86.

[0023] The recycling mechanism 9 is used for automatically distributing and reusing the water in the water collecting tank 7. The recycling mechanism 9 comprises a water supply pipe 91, a water supply pump 92, a branch pipe 93 and an atomizing nozzle 94. The water supply pipes 91 are respectively penetrated through the lower end of the right wall of the water collecting tank 7. The water supply pipes 91 are fixedly connected to the bridge body 1. A plurality of evenly distributed branch pipes 93 are penetrated through the inner upper end of the water supply pipe 91. An atomizing nozzle 94 is provided at one end of the branch pipe 93 close to the center of the bridge body 1. The lower end of the water supply pipe 91 is connected in series with a water supply pump 92.

[0024] The recycling mechanism 9 also includes a humidity sensor 95 and a radar level gauge 96 . The radar level gauges 96 are respectively arranged on the upper side of the water collecting tank 7 . The humidity sensor 95 is arranged on the outer side of the upper end of the water supply pipe 91 .

[0025] The recycling mechanism 9 also includes a delivery pipe 97 and a solenoid valve 98. The delivery pipe 97 is respectively arranged to penetrate the upper end of the right wall of the water collecting box 7. The middle part of the delivery pipe 97 is connected in series with a solenoid valve 98, and there are more than two branch pipes 93.

[0026] The roadbed rainwater impurity separation device for highway bridges provided by the present invention has the following working principle: First, the delivery pipe 97 is connected to the external water pipe, and the slag discharge pipe 6 is connected to the external sediment collection box through the pipeline. When rainwater appears on the highway bridge, the rainwater passes through the corresponding rectangular drain plate 3 and enters the sump 2. The larger impurities in the rainwater are filtered through the rectangular drain plate 3 to avoid the pipeline being blocked by the larger impurities in the later stage. The rainwater flows along the bottom slope of the sump 2 to the drainage pipe 4 in the middle. The rainwater flowing in the drainage pipe 4 is moved and guided by the spiral guide plate 10, so that the rainwater flows in the drainage pipe 4 in a spiral manner, thereby increasing the flow speed of the rainwater and accelerating the drainage efficiency. Then the rainwater is merged into the confluence pipe 5 through the drainage pipe 4, and the circular confluence pipe 5 in the confluence pipe 5 is used to collect the rainwater. The filter plate 83 filters the small particles of silt and impurities carried in the rainwater. In this process, the flow impact force of the rainwater itself in the pipe is used to apply pressure to the fan blade surface of the driving blade 84, so that the driving blade 84 drives the rotating shaft 82 to rotate in the opposite direction, and the rotating shaft 82 drives the annular seat 851 to rotate. During the rotation of the annular seat 851, the outer edge of the arc-shaped solid brush 853 is always elastically fitted with the inner wall of the lower end of the conduit 5 through the compression elastic force of the spring 1 855. The silt and sand filtering residues on the surface of the circular filter plate 83 are cleaned to the edge of the surface of the circular filter plate 83 through the mutual cooperation of the arc-shaped solid brush 853 and the arc-shaped hollow brush 852. When the arc-shaped hollow brush 852 rotates and moves to the separation When the door 86 contacts, since the compression force of the spring 1 855 is greater than the compression force of the spring 2 88, the partition door 86 flips upward around the axis of the corresponding rotating shaft 2 and opens, and the telescopic end of the arc-shaped telescopic column 2 87 and the spring 2 88 contract. The compression force of the spring 1 855 causes the arc-shaped solid brush 853 to slide outward along the inside of the arc-shaped hollow brush 852, so that the outer end of the arc-shaped solid brush 853 is in the rectangular tube, and then the curved surface extrusion force of the arc-shaped solid brush 853 pushes the mud and sand on the edge of the surface of the circular filter plate 83 into the rectangular tube, and the filtered mud and sand are collected along the rectangular tube through the slag discharge pipe 6 to the external mud and sand collection box, and the mud and sand filtered on the surface of the circular filter plate 83 are self-cleaned, thereby avoiding In order to prevent the circular filter plate 83 from being blocked by impurities filtering rainwater from the roadbed of highway bridges, when the arc-shaped solid brush 853 moves out of the range of the rectangular tube, the contact pressure between the arc surface of the arc-shaped solid brush 853 and the edge of the rectangular tube causes the arc-shaped solid brush 853 to partially shrink into the inside of the arc-shaped hollow brush 852, and then the compression force of the spring 2 88 causes the partition door 86 to reset and seal the opening between the rectangular tube and the circular filter plate 83, preventing rainwater from the roadbed of highway bridges from entering the slag discharge pipe 6, and the lower right edge of the partition door 86 is in contact with the outer edge of the adjacent circular filter plate 83 through the arc surface, thereby avoiding a contact gap between the partition door 86 and the circular filter plate 83 when the partition door 86 is closed.

[0027] The filtered rainwater enters the water collecting tank 7. The detection end of the radar level meter 96 is located at the top of the water collecting tank 7. The electromagnetic pulse emitted by the detection end of the radar level meter 96 propagates along the steel cable or probe at the speed of light. When encountering the liquid surface, part of the pulse is reflected to form an echo and returns to the pulse emission position along the same path. The distance between the emission position and the surface of the measured medium is proportional to the propagation time of the pulse in between. The liquid level height in the water collecting tank 7 is calculated. When there is too much rainwater in the water collecting tank 7, the solenoid valve 98 is opened, so that the water collecting tank 7 Excessive rainwater enters the external water pipe through the delivery pipe 97. When the rainwater on the roadbed of the highway bridge is heavy, the rainwater level in the sump 2 gradually rises, and the foam suspension frame 12 is driven by the buoyancy of the rainwater to drive the blocking rod 13 to move upward along the inside of the sump 2. The upper end of the blocking rod 13 passes through the movable hole 11 of the rectangular drain board 3 and is exposed above the rectangular drain board 3, thereby blocking larger impurities in the rainwater on the roadbed of the highway bridge above the rectangular drain board 3, avoiding blockage of the rectangular drain board 3 during the drainage process of the highway bridge roadbed.

[0028] The humidity in the air around the highway bridge is detected by the detection element of the humidity sensor 95. When the humidity in the air around the highway bridge is too low, the water supply pump 92 is started. The water supply pump 92 runs to transport the rainwater collected in the water collecting tank 7 to the atomizing nozzle 94 through the water supply pipe 91 and the branch pipe 93. The collected rainwater passes through the atomizing nozzle 94 to humidify and remove dust around the highway bridge. No staff intervention is required, and the degree of intelligence is high.

[0029] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A roadbed rainwater impurity separation device for highway bridges, characterized by: It comprises a bridge body (1), a filtering and anti-blocking mechanism (8) and a recycling mechanism (9); A plurality of symmetrically distributed water collecting grooves (2) are provided on the upper side of the bridge body (1); a rectangular drainage plate (3) is installed at the upper end of each water collecting groove (2); a drainage pipe (4) is penetrated through the bottom wall of each water collecting groove (2); a common confluence pipe (5) is provided between the plurality of drainage pipes (4) located on the same side; the confluence pipe (5) is connected to a slag discharge pipe (6) through a rectangular pipe; and a water collecting tank (7) is provided at the bottom of the confluence pipe (5); The filtering anti-blocking mechanism (8) comprises a cross frame (81), a rotating shaft (82), a circular filter plate (83), a driving blade (84) and a cleaning assembly (85), wherein the cross frame (81) and the circular filter plate (83) are respectively arranged at the lower end of the inner part of the manifold (5), the cross frame (81) is located below the adjacent circular filter plate (83), the middle part of the cross frame (81) is rotatably connected to the rotating shaft (82) via a bearing, the upper end of the rotating shaft (82) passes through the adjacent circular filter plate (83) and is provided with a cleaning assembly (85), and the lower side of the rotating shaft (82) is provided with three driving blades (84); The recycling mechanism (9) is used to automatically distribute and reuse the water in the water collecting tank (7).

2. The roadbed rainwater impurity separation device for highway bridges according to claim 1 is characterized by: The filtering anti-blocking mechanism (8) further comprises a partition door (86), a second arc-shaped telescopic column (87) and a second spring (88). The partition door (86) is rotatably connected to the inner upper end of the rectangular tube via the second rotating shaft. The interior of the slag discharge pipe (6) is fixedly connected to the adjacent partition door (86) via the second arc-shaped telescopic column (87) and the second spring (88). The second spring (88) is movably sleeved with the outer end of the adjacent second arc-shaped telescopic column (87). The arc centers of the fixed end and the telescopic end of the second arc-shaped telescopic column (87) coincide with the axis center of the adjacent second rotating shaft.

3. The roadbed rainwater impurity separation device for highway bridges according to claim 1 is characterized by: The cleaning assembly (85) comprises an annular seat (851), an arc-shaped hollow brush (852), an arc-shaped solid brush (853), an arc-shaped telescopic column (854) and a spring (855). The annular seats (851) are respectively arranged at the upper end of the rotating shaft (82). The outer side of the annular seat (851) is provided with an arc-shaped hollow brush (852). The inner side of the arc-shaped hollow brush (852) is slidably connected with an arc-shaped solid brush (853). The arc-shaped solid brush (854) is provided with an arc-shaped hollow brush (852). An arc-shaped telescopic column (854) and a spring (855) are provided between each of the arc-shaped hollow brushes (853) and the adjacent arc-shaped hollow brush (852). The spring (855) is movably sleeved with the outer end of the adjacent arc-shaped telescopic column (854). The arc centers of the fixed end and the telescopic end of the arc-shaped telescopic column (854) coincide with the arc centers of the adjacent arc-shaped solid brush (853). The arc-shaped solid brush (853) is installed in coordination with the adjacent partition door (86).

4. The roadbed rainwater impurity separation device for highway bridges according to claim 1 is characterized by: The recycling mechanism (9) comprises a water supply pipe (91), a water supply pump (92), a branch pipe (93) and an atomizing nozzle (94). The water supply pipes (91) are respectively arranged to penetrate the lower end of the right wall of the water collecting tank (7). The water supply pipes (91) are fixedly connected to the bridge body (1). A plurality of evenly distributed branch pipes (93) are penetrated through the upper end of the inner part of the water supply pipe (91). The end of the branch pipe (93) close to the center of the bridge body (1) is provided with an atomizing nozzle (94). The lower end of the water supply pipe (91) is connected in series with a water supply pump (92).

5. The roadbed rainwater impurity separation device for highway bridges according to claim 4 is characterized by: The recycling mechanism (9) further comprises a humidity sensor (95) and a radar level gauge (96); the radar level gauges (96) are respectively arranged on the upper side of the water collecting tank (7); and the humidity sensor (95) is arranged on the outer side of the upper end of the water supply pipe (91).

6. The roadbed rainwater impurity separation device for highway bridges according to claim 1 is characterized by: The recycling mechanism (9) further comprises a delivery pipe (97) and a solenoid valve (98). The delivery pipes (97) are respectively arranged to penetrate the upper end of the right wall of the water collecting tank (7), and the middle part of the delivery pipes (97) is connected in series with the solenoid valve (98).

7. The roadbed rainwater impurity separation device for highway bridges according to claim 1 is characterized by: The inner wall of the drainage pipe (4) is provided with a spiral guide piece (10).

8. The roadbed rainwater impurity separation device for highway bridges according to claim 1 is characterized by: A foam suspension frame (12) is slidably connected inside the water collection tank (2), a plurality of evenly distributed blocking rods (13) are provided at the upper end of the foam suspension frame (12), a plurality of evenly distributed moving holes (11) are provided at the outer edge of the rectangular drainage plate (3), and the blocking rods (13) are installed in coordination with adjacent moving holes (11).

9. The roadbed rainwater impurity separation device for highway bridges according to claim 1 is characterized by: A limiting ring (14) is provided inside the water collecting trough (2), and the upper side of the limiting ring (14) contacts the lower side of the adjacent rectangular drain plate (3).

Images