An elevated bridge drainage system for a recyclable snowmelt agent

Abstract

The present invention discloses a viaduct drainage system for recyclable snowmelt agent, belonging to the technical field of viaduct drainage. A viaduct drainage system for recyclable snowmelt agent includes several water receiving pipes fixedly arranged on the bridge, and further includes: a drainage pipeline, which is interconnected with the bottoms of several water receiving pipes and is used for draining water to the ground; a water collection tank, which is arranged on the ground and is provided with a bypass pipeline between the water collection tank and the drainage pipeline. A feeding pipe is arranged at the top of the water collection tank, and a mixing mechanism is arranged inside the water collection tank; and a low-temperature evaporation device, which is provided with a connecting pipe between the low-temperature evaporation device and the water collection tank. The present invention can collect and utilize the sewage mixed with snowmelt agent in the viaduct drainage pipeline, avoid the pollution caused by the snowmelt agent discharged to the ground to the surrounding environment, and has good social and environmental benefits; by remixing new snowmelt agent stock solution to prepare a new liquid snowmelt agent for repeated recycling, resources can be saved, costs can be reduced, and good economic benefits can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of viaduct drainage, and in particular to a viaduct drainage system capable of recycling snowmelt agent. Background Art

[0002] When encountering rain and snow weather in northern China, the accumulated snow on the bridge surface is prone to icing, making the bridge surface slippery. Especially for sections with large slopes such as the ramps at the upper and lower ends of the viaduct, it is easy to cause traffic accidents. At present, "chloride-based" snowmelt agents are mostly used in China to spray and melt the snow on the road surface. However, the extensive use of chloride-based snowmelt agents not only improves the efficiency of snow melting and ice removal but also causes serious damage to engineering structures and the surrounding environment. This problem has increasingly attracted the attention of countries around the world.

[0003] The Chinese invention patent with the application number CN202210776540.3 specifically discloses a snowmelt agent recovery device, which drives the recovery device to move on the road surface with the vehicle body as the power, and recovers the snowmelt agent on the road surface through the recovery brush mechanism and the negative pressure fan. Although this device can recover the snowmelt agent, it only targets solid snowmelt agents. In actual use, the snowmelt agent is dissolved in water. When the ice and snow melt, the snowmelt agent changes from a solid to a liquid aqueous solution, and this device does not collect the snowmelt agent solution. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and propose a viaduct drainage system capable of recycling snowmelt agent.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A viaduct drainage system capable of recycling snowmelt agent, including a plurality of water receiving pipes fixedly arranged on the bridge, and further including:

[0007] A drainage pipeline, which is interconnected with the bottoms of the plurality of water receiving pipes and is used for draining water to the ground;

[0008] A water collecting tank, which is arranged on the ground and there is a bypass pipeline between the water collecting tank and the drainage pipeline. A feeding pipe is arranged at the top of the water collecting tank, and a mixing mechanism is arranged inside the water collecting tank; and

[0009] A low-temperature evaporation device, there is a connecting pipe between the low-temperature evaporation device and the water collecting tank, a float valve is arranged at the connection of the connecting pipe and the water collecting tank, and the low-temperature evaporation device is connected with a water outlet pipe through a water pump.

[0010] Preferably, a first valve is arranged inside the drainage pipeline, a second valve is arranged inside the bypass pipeline, the height of the first valve is lower than that of the second valve, and a filter layer is arranged on the bypass pipeline.

[0011] Preferably, the mixing mechanism includes a support plate fixed in the water collecting tank, a double-shaft output motor arranged on the support plate, a stirring shaft connected to the lower output end of the double-shaft output motor, and stirring blades uniformly arranged on the stirring shaft.

[0012] Preferably, a transmission rod is connected to the upper output end of the double-shaft output motor. The top of the transmission rod is connected with a connecting plate. A connecting rod is arranged on the connecting plate. A guiding and telescopic pipe is arranged on the connecting rod. One end of the guiding and telescopic pipe far away from the connecting rod is rotatably connected with a conical hopper. The conical hopper is fixed on the lower side of the feeding pipe. A feeding port is arranged on the feeding pipe.

[0013] Preferably, the connecting rod is arranged as a reciprocating lead screw. A first sleeve fixedly connected with the guiding and telescopic pipe is in threaded connection with the outer side of the connecting rod. One end of the connecting rod far away from the connecting plate is connected with a driven bevel gear. A bevel gear ring meshed with the driven bevel gear is fixedly arranged on the inner wall of the water collecting tank.

[0014] Preferably, a brush plate is arranged at the bottom of the connecting plate. The brush plate is movably abutted against the top wall of the support plate.

[0015] Preferably, a movable groove communicated with the feeding pipe is arranged at the top of the water collecting tank. A sieve plate is slidably connected in the movable groove. An elastic element is arranged between the sieve plate and the inner wall of the movable groove. A first connecting plate is fixedly arranged at the top of the transmission rod. A second connecting plate is movably connected to the first connecting plate. One end of the second connecting plate far away from the first connecting plate is movably connected with the sieve plate through a pin shaft.

[0016] Preferably, a rack plate is arranged on the side wall of the sieve plate. A moving gear meshed with the rack plate is rotatably arranged on the water collecting tank. A screw rod is arranged on the moving gear. A second sleeve is in threaded connection with the outer side of the screw rod. The second sleeve is connected with a sliding rod through a connecting plate. The sliding rod is slidably connected in the feeding pipe. A cutting frame movably abutted against the sieve plate is arranged at the bottom of the sliding rod.

[0017] Preferably, one end of the water outlet pipe far away from the low-temperature evaporation device is connected with a liquid guiding pipe. The water outlet end of the liquid guiding pipe is connected with a spray head for spraying water body onto the bridge road surface. The spray head is arranged on the bridge.

[0018] Preferably, a three-way valve is arranged at the connection of the water outlet pipe and the liquid guiding pipe. Two of the ports of the three-way valve are communicated with the water outlet pipe and the liquid guiding pipe respectively. The other port of the three-way valve is connected with a down pipe. One end of the down pipe far away from the three-way valve is connected with a drainage pipe.

[0019] Compared with the prior art, the present invention provides a viaduct drainage system capable of recycling deicing salt, and has the following beneficial effects:

[0020] 1. The viaduct drainage system with recyclable deicing agent can collect the snow water melted by the deicing agent in snowy weather by connecting a bypass pipe to the drainage pipe, so as to avoid the pollution of the surrounding environment caused by the deicing agent being discharged to the ground, which has good social and environmental benefits; and the deicing agent solution with lower concentration is mixed with the new deicing agent stock solution through a mixing mechanism to prepare a new liquid deicing agent for repeated recycling, which can save resources, reduce costs and has good economic benefits.

[0021] 2. The elevated bridge drainage system with recyclable de-icing agent can avoid the water collection tank from collecting a large amount of sewage containing de-icing agent by setting up low-temperature evaporation equipment, reduce sewage storage space, and continuously produce de-icing agent from excess snow water collected in the water collection tank to obtain solid de-icing agent. The low-temperature evaporation equipment can discharge the condensed higher temperature water to the elevated bridge deck through the outlet pipe and the liquid guide pipe, thereby accelerating the melting speed of snow on the bridge deck. The melted snow water carries the sewage containing de-icing agent into the drainage pipe, thereby preventing the de-icing agent from slowly seeping into the road surface and causing damage to the road surface.

[0022] 3. The elevated bridge drainage system with recyclable deicing agent can evenly scatter the deicing agent raw materials in the snow water with low deicing agent concentration by setting a mixing mechanism, thereby ensuring the preparation effect and efficiency of the deicing agent solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 For the present invention Figure 1 A partial enlarged structural diagram of the middle part;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the drainage pipe of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the water collecting tank of the present invention;

[0027] Figure 5 It is a schematic cross-sectional structure diagram of the water collecting tank of the present invention;

[0028] Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure of the middle B part;

[0029] Figure 7 It is a partial cross-sectional structural schematic diagram of the water collecting tank of the present invention.

[0030] In the figure: 1, water connection pipe; 2, drainage pipe; 201, first valve; 3, water collection tank; 301, feeding pipe; 3011, feeding port; 4, bypass pipeline; 401, second valve; 402, filter layer; 5, low-temperature evaporation equipment; 501, water pump; 502, water outlet pipe; 6, connecting pipe; 601, float valve; 7, support plate; 701, double-shaft output motor; 702, stirring shaft; 703, stirring blade; 704, transmission rod; 7041, first connecting plate; 7042, second connecting plate; 8, connecting plate; 801, connecting rod; 802, driven bevel gear; 803, guiding and telescopic pipe; 804, first sleeve; 805, brush plate; 9, bevel gear ring; 10, conical hopper; 11, movable groove; 111, sieve plate; 1111, rack plate; 112, elastic element; 12, screw rod; 121, driving gear; 122, second sleeve; 123, sliding rod; 124, cutting frame; 13, liquid guiding pipe; 131, spray head; 14, three-way valve; 15, down pipe. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements; for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] Embodiment:

[0035] Refer to Figure 1 、Figure 2 , Figure 3 , Figure 4 and Figure 5 , a viaduct drainage system for a recyclable snowmelt agent, including several water connection pipes 1 fixedly installed on the bridge, and further including:

[0036] A drainage pipe 2, the drainage pipe 2 is interconnected with the bottoms of several water connection pipes 1 and is used for draining water to the ground;

[0037] A water collection tank 3, the water collection tank 3 is arranged on the ground and there is a bypass pipeline 4 between the water collection tank 3 and the drainage pipe 2. A feeding pipe 301 is arranged at the top of the water collection tank 3, and a mixing mechanism is arranged in the water collection tank 3; and

[0038] A low-temperature evaporation device 5, there is a connecting pipe 6 between the low-temperature evaporation device 5 and the water collection tank 3. A float valve 601 is arranged at the connection of the connecting pipe 6 and the water collection tank 3. The low-temperature evaporation device 5 is connected with a water outlet pipe 502 through a water pump 501.

[0039] Furthermore, a first valve 201 is arranged in the drainage pipe 2, a second valve 401 is arranged in the bypass pipeline 4. The height of the first valve 201 is lower than the height of the second valve 401, and a filter layer 402 is arranged on the bypass pipeline 4.

[0040] Specifically, in daily rainy weather, the rainwater on the bridge surface flows along the slope to the water connection pipe 1. A filter screen is provided at the water connection pipe 1 to intercept large debris. Then, the rainwater enters the drainage pipe 2 through multiple water connection pipes 1. After entering the drainage pipe 2, the sewage passes through the first valve 201 to drain to the ground or flow into the municipal sewage pipe. When there is snow accumulation on the viaduct road surface in winter, the staff sprinkle solid or liquid snow melting agent on the viaduct road surface. The snow melting agent melts the ice and snow on the road surface. After the snow melting agent is used, it melts into the snow melt water, showing a decrease in concentration and an increase in impurities, and its properties do not change. The melted snow water flows along the slope of the bridge surface to the water connection pipe 1 and enters the drainage pipe 2 through multiple water connection pipes 1. At this time, the first valve 201 is controlled to close, and the second valve 401 is opened. The sewage containing the snow melting agent enters the water collection tank 3 through the bypass pipeline 4. When the sewage flows through the bypass pipeline 4, the internal impurities are intercepted by the filter layer 402. The filter layer 402 is detachably arranged on the bypass pipeline 4 through bolts, which is convenient for its replacement and maintenance. After entering the water collection tank 3, the water collection tank 3 can store the solution containing the snow melting agent. When there is too much melt water, the melt water enters the low-temperature evaporation device 5 through the float valve 601 and the connecting pipe 6, which can prevent the water collection tank 3 from collecting a large amount of sewage containing the snow melting agent and reduce the sewage storage space. The low-temperature evaporation device 5 can continuously produce the snow melting agent from the redundant snow water collected in the water collection tank 3 to obtain solid snow melting agent. Subsequently, the low-temperature evaporation device 5 can directly discharge the condensed water body through the water outlet pipe 502, which can reduce its pollution to the surrounding environment and has good social and environmental benefits. And the staff can mix the melt water with a lower concentration of snow melting agent in the water collection tank 3 with the new snow melting agent stock solution or the solid snow melting agent obtained by the low-temperature evaporation device 5 through the mixing mechanism to prepare a liquid snow melting agent with a high concentration for repeated recycling, which can save resources, reduce costs, and has good economic benefits.

[0041] Referring to Figure 5 and Figure 6 , as a preferred technical solution of the present invention, the mixing mechanism includes a support plate 7 fixedly arranged in the water collection tank 3, a double-shaft output motor 701 arranged on the support plate 7, a stirring shaft 702 connected to the lower output end of the double-shaft output motor 701, and stirring blades 703 uniformly arranged on the stirring shaft 702. Specifically, when the mixing mechanism works, the snow melting agent stock solution or solid solution agent is added into the water collection tank 3 through the feeding pipe 301. Then, the double-shaft output motor 701 is controlled to operate. The output shaft at the lower side of the double-shaft output motor 701 drives the stirring shaft 702 to rotate, and the stirring shaft 702 drives the stirring blades 703 to rotate in the water collection tank 3, so that the snow melting agent stock solution or solid solution agent is quickly mixed with the melt water collected in the water collection tank 3, improving the preparation efficiency and preparation effect of the snow melting agent.

[0042] Referring to Figure 5 , Figure 6 and Figure 7, As a preferred technical solution of the present invention, a transmission rod 704 is connected to the upper output end of the dual-axis output motor 701. A connecting plate 8 is connected to the top of the transmission rod 704. A connecting rod 801 is provided on the connecting plate 8. A material guiding telescopic tube 803 is provided on the connecting rod 801. One end of the material guiding telescopic tube 803 away from the connecting rod 801 is rotatably connected to a conical hopper 10. The conical hopper 10 is fixedly arranged under the feeding pipe 301. A feeding port 3011 is provided on the feeding pipe 301.

[0043] Furthermore, the connecting rod 801 is arranged as a reciprocating lead screw. A first sleeve 804 fixedly connected to the material guiding telescopic tube 803 is threadedly connected to the outside of the connecting rod 801. One end of the connecting rod 801 away from the connecting plate 8 is connected to a driven bevel gear 802. A bevel gear ring 9 meshingly connected to the driven bevel gear 802 is fixedly arranged on the inner wall of the water collecting tank 3.

[0044] Specifically, when the dual-axis output motor 701 operates, the upper output end drives the reciprocating lead screw to revolve around the stirring shaft 702 through the connecting plate 8. When the reciprocating lead screw moves, it drives the driven bevel gear 802 to mesh with the bevel gear ring 9 fixedly arranged on the inner wall of the water collecting tank 3, so that the driven bevel gear 802 rotates during the movement. The driven bevel gear 802 drives the reciprocating lead screw to rotate on the connecting plate 8, so that the first sleeve 804 reciprocates on its outside. When the first sleeve 804 moves, it drives the material guiding telescopic tube 803 to move synchronously, so that the bottom opening of the material guiding telescopic tube 803 moves from the middle of the water collecting tank 3 to the side of the water collecting tank 3 when rotating around the stirring shaft 702. The material guiding telescopic tube 803 contracts during this process, so that the trajectory of the bottom opening of the material guiding telescopic tube 803 is a spiral line, so that the raw materials falling from the feeding pipe 301 are evenly distributed in the water collecting tank 3 along the movement trajectory of the material guiding telescopic tube 803, avoiding the snow melting agent raw materials falling at one point, which is beneficial to improving the mixing efficiency and mixing effect of the snow melting agent raw materials and the melted water, and ensuring the preparation effect and preparation efficiency of the high-concentration liquid snow melting agent.

[0045] Refer to Figure 5 and Figure 6 , As a preferred technical solution of the present invention, a brush plate 805 is provided at the bottom of the connecting plate 8. The brush plate 805 is movably abutted against the top wall of the support plate 7; Specifically, when the connecting plate 8 rotates synchronously with the transmission rod 704, the connecting plate 8 drives the brush plate 805 at the bottom to clean the top wall of the support plate 7, sweeping away the snow melting agent raw materials falling on the support plate 7 from the discharge port of the material guiding telescopic tube 803, avoiding this part of the raw materials from not being able to participate in the mixing preparation and causing waste of the snow melting agent.

[0046] Refer to Figure 4 , Figure 5 , Figure 6 and Figure 7, as a preferred technical solution of the present invention, an activity groove 11 communicating with the feeding pipe 301 is opened at the top of the water collecting tank 3. A sieve plate 111 is slidably connected in the activity groove 11. An elastic element 112 is arranged between the sieve plate 111 and the inner wall of the activity groove 11. A first connecting plate 7041 is fixedly arranged at the top of the transmission rod 704. A second connecting plate 7042 is movably connected to the first connecting plate 7041. One end of the second connecting plate 7042 away from the first connecting plate 7041 is movably connected to the sieve plate 111 through a pin shaft.

[0047] Furthermore, a rack plate 1111 is arranged on the side wall of the sieve plate 111. A moving gear 121 meshing with the rack plate 1111 is rotatably arranged on the water collecting tank 3. A screw rod 12 is arranged on the moving gear 121. A second sleeve 122 is threadedly connected to the outside of the screw rod 12. The second sleeve 122 is connected to a sliding rod 123 through a connecting plate. The sliding rod 123 is slidably connected in the feeding pipe 301. A cutting frame 124 that movably abuts against the sieve plate 111 is arranged at the bottom of the sliding rod 123.

[0048] Specifically, the solid snow melting agent poured from the feeding port 3011 of the feeding pipe 301 will fall on the sieve plate 111. The sieve plate 111 intercepts the snow melting agent with larger particles to avoid the slow mixing speed of the large particle snow melting agent and the melted water. When the transmission rod 704 rotates, it will drive the first connecting plate 7041 to rotate synchronously. The first connecting plate 7041 drives the second connecting plate 7042 to swing. The second connecting plate 7042 drives the sieve plate 111 to reciprocate in the activity groove 11 through the pin shaft. When the sieve plate 111 reciprocates, it will drive the rack plate 1111 and the moving gear 121 to mesh and drive. The moving gear 121 drives the screw rod 12 to rotate back and forth, so that the second sleeve 122 on the outside of the screw rod 12 reciprocates up and down. The second sleeve 122 drives the sliding rod 123 to slide up and down relative to the feeding pipe 301 through the connecting plate. When the sliding rod 123 moves up and down, it drives the cutting frame 124 to cut the snow melting agent on the sieve plate 111, making the large particle snow melting agent smaller. The sieve plate 111 reciprocating in the activity groove 11, on the one hand, speeds up the speed of the solid snow melting agent raw material passing through the sieve plate 111 after cutting, and on the other hand, facilitates the raw material at other positions to shake to the lower side of the cutting frame 124, ensuring the cutting effect of the cutting frame 124 on the raw material on the sieve plate 111, so as to facilitate the rapid mixing of the melted water and the snow melting agent raw material in the water collecting tank 3, and quickly make the melted water with a lower concentration of the snow melting agent collected from the viaduct drainage system into a liquid snow melting agent with a higher concentration, and recycle the snow melting agent.

[0049] Refer to Figure 1 and Figure 2As a preferred technical solution of the present invention, one end of the water outlet pipe 502 away from the low-temperature evaporation device 5 is connected to a liquid guide pipe 13, and the water outlet end of the liquid guide pipe 13 is connected to a nozzle 131 for spraying water onto the bridge pavement, and the nozzle 131 is arranged on the bridge; specifically, when there is too much melt water collected in the water collecting tank 3, the melt water enters the low-temperature evaporation device 5 through the float valve 601 and the connecting pipe 6, which can avoid the water collecting tank 3 from collecting a large amount of sewage containing snow melting agent, thereby reducing the sewage storage space, and the low-temperature evaporation device 5 can continuously prepare the snow melting agent in the excess snow water collected in the water collecting tank 3 to obtain a solid snow melting agent, and then the low-temperature evaporation device 5 can discharge the condensed higher temperature water to the elevated bridge deck through the water outlet pipe 502 and the liquid guide pipe 13, and spray it onto the snow accumulation through the nozzle 131, thereby accelerating the melting speed of the snow on the bridge deck, and the melted snow water carries the sewage with the snow melting agent into the drainage pipe 2, thereby avoiding the snow melting agent from slowly seeping into the road surface and causing damage to the road surface, thereby improving the service life of the elevated bridge.

[0050] Reference Figure 1 and Figure 2 As a preferred technical solution of the present invention, a three-way valve 14 is provided at the connection between the water outlet pipe 502 and the liquid guide pipe 13, two ports of the three-way valve 14 are connected to the water outlet pipe 502 and the liquid guide pipe 13, and the other port of the three-way valve 14 is connected to the downpipe 15, and the end of the downpipe 15 away from the three-way valve 14 is connected to the drainage pipe 2; specifically, initially, the three-way valve 14 connects the water outlet pipe 502 and the liquid guide pipe 13, and the water outlet pipe 502 is not connected to the downpipe 15, and the water with a higher temperature discharged from the water outlet pipe 502 is sprayed on the bridge deck along the liquid guide pipe 13 and the nozzle 131, thereby accelerating the water on the bridge deck. The melting speed of snow is reduced, and the melted snow water carries sewage with snow-melting agent into the drainage pipe 2, so as to prevent the snow-melting agent from slowly seeping into the road surface and causing damage to the road surface; when there is no need to spray condensed water on the bridge deck, the three-way valve 14 makes the outlet pipe 502 and the liquid guide pipe 13 no longer connected, and the outlet pipe 502 and the downpipe 15 are connected. The condensed water discharged from the outlet pipe 502 enters the drainage pipe 2 through the downpipe 15, and is discharged to the ground or the municipal sewage pipe through the drainage pipe 2. The water body condensed by the low-temperature evaporation equipment 5 no longer contains chloride salt components, which prevents pollution to the surrounding environment and has good social and environmental benefits.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An elevated bridge drainage system for a recyclable snowmelt agent, comprising a plurality of connecting water pipes (1) fixedly arranged on the bridge, characterized in that, It further includes: A drainage pipe (2) which is in communication with the bottoms of a plurality of water connection pipes (1) and is used for draining water to the ground; A water collection tank (3) which is arranged on the ground and is provided with a bypass pipeline (4) between it and the drainage pipe (2). A feeding pipe (301) is arranged at the top of the water collection tank (3), and a mixing mechanism is arranged inside the water collection tank (3); and A low-temperature evaporation device (5) which is provided with a connecting pipe (6) between it and the water collection tank (3). A float valve (601) is arranged at the connection of the connecting pipe (6) and the water collection tank (3). The low-temperature evaporation device (5) is connected with a water outlet pipe (502) through a water pump (501).

2. The elevated bridge drainage system of a recyclable snowmelt agent according to claim 1, characterized in that, A first valve (201) is arranged inside the drainage pipe (2), a second valve (401) is arranged inside the bypass pipeline (4). The height of the first valve (201) is lower than that of the second valve (401), and a filter layer (402) is arranged on the bypass pipeline (4).

3. The viaduct drainage system of a recyclable snowmelt agent according to claim 1, characterized in that The mixing mechanism includes a support plate (7) fixedly arranged inside the water collection tank (3), a double-shaft output motor (701) arranged on the support plate (7), a stirring shaft (702) connected to the lower output end of the double-shaft output motor (701), and stirring blades (703) uniformly arranged on the stirring shaft (702).

4. The elevated bridge drainage system of a recyclable snowmelt agent according to claim 3, characterized in that, The upper output end of the double-shaft output motor (701) is connected with a transmission rod (704). The top of the transmission rod (704) is connected with a connecting plate (8). A connecting rod (801) is arranged on the connecting plate (8). A guiding and telescopic pipe (803) is arranged on the connecting rod (801). The end of the guiding and telescopic pipe (803) far away from the connecting rod (801) is rotatably connected with a conical hopper (10). The conical hopper (10) is fixedly arranged below the feeding pipe (301), and a feeding port (3011) is opened on the feeding pipe (301).

5. The elevated bridge drainage system of a recyclable snowmelt agent according to claim 4, characterized in that, The connecting rod (801) is arranged as a reciprocating lead screw. A first sleeve (804) fixedly connected with the guiding and telescopic pipe (803) is in threaded connection with the outside of the connecting rod (801). One end of the connecting rod (801) far away from the connecting plate (8) is connected with a driven bevel gear (802), and a bevel gear ring (9) meshingly connected with the driven bevel gear (802) is fixedly arranged on the inner wall of the water collection tank (3).

6. The viaduct drainage system of a recyclable snowmelt agent according to claim 5, characterized in that, A brush plate (805) is arranged at the bottom of the connecting plate (8), and the brush plate (805) is movably abutted against the top wall of the support plate (7).

7. The elevated bridge drainage system of a recyclable snowmelt agent according to claim 4, characterized in that, An activity groove (11) communicating with the feeding pipe (301) is opened at the top of the water collection tank (3). A sieve plate (111) is slidably connected inside the activity groove (11). An elastic element (112) is arranged between the sieve plate (111) and the inner wall of the activity groove (11). A first connecting plate (7041) is fixedly arranged at the top of the transmission rod (704). A second connecting plate (7042) is movably connected to the first connecting plate (7041). One end of the second connecting plate (7042) far away from the first connecting plate (7041) is movably connected with the sieve plate (111) through a pin shaft.

8. The elevated bridge drainage system of a recyclable snowmelt agent according to claim 7, characterized in that, The side wall of the sieve plate (111) is provided with a rack plate (1111), a moving gear (121) meshed with the rack plate (1111) is rotatably arranged on the water collecting tank (3), a screw rod (12) is arranged on the moving gear (121), a second sleeve (122) is threadedly connected to the outside of the screw rod (12), the second sleeve (122) is connected with a sliding rod (123) through a connecting plate, the sliding rod (123) is slidably connected in the feeding pipe (301), and a cutting frame (124) which is movably abutted against the sieve plate (111) is arranged at the bottom of the sliding rod (123).

9. The viaduct drainage system of a recyclable snowmelt agent according to claim 1, characterized in that, One end of the water outlet pipe (502) far away from the low-temperature evaporation device (5) is connected with a liquid guide pipe (13), the water outlet end of the liquid guide pipe (13) is connected with a nozzle (131) for spraying water body onto the bridge road surface, and the nozzle (131) is arranged on the bridge.

10. The viaduct drainage system of a recyclable snowmelt agent according to claim 9, characterized in that, A three-way valve (14) is arranged at the connection of the water outlet pipe (502) and the liquid guide pipe (13), two of the ports of the three-way valve (14) are communicated with the water outlet pipe (502) and the liquid guide pipe (13) respectively, the other port of the three-way valve (14) is connected with a sewer pipe (15), and one end of the sewer pipe (15) far away from the three-way valve (14) is connected with the drainage pipe (2).

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