Rainwater drainage device for bridge

Abstract

A rainwater drainage device for a bridge comprises an upper leading-in part, a flow dividing pipe is arranged below the upper leading-in part, an overflow hole is formed in one side of the flow dividing pipe, and an overflow channel is arranged below the overflow hole; a treatment part is arranged below the shunt pipe, the treatment part comprises a treatment pipe communicated with the shunt pipe, a lead-in cavity is formed in the upper part of the treatment pipe, a middle pipe is arranged below the lead-in cavity, a reflux cavity is formed in the bottom of the middle pipe, and a filter medium layer is arranged on the outer side of the middle pipe; a leading-out cavity is arranged above the filtering medium layer, an external flow channel is arranged on the outer side of the leading-out cavity, and the leading-out cavity is communicated with the external flow channel through a plurality of external flow holes. According to the device, pre-collection is conducted through the upper guide-in part, unsmooth guide-out when water flow is too large is avoided through the overflow hole and the overflow channel in the lower part, and refined filtering treatment is conducted through the treatment part generally, so that rainwater is prevented from polluting the environment.

Description

Technical Field

[0001] This application relates to a rainwater drainage device for bridges. Background Technology

[0002] Bridges, as structures connecting the banks of rivers and reservoirs, are generally made of steel and concrete. Because they are directly above water sources, rainwater easily washes away various pollutants accumulated on their upper surfaces, such as metal oxide residue, tire wear, and debris from pedestrians, into the water. This can not only cause water pollution but also damage the aquatic ecosystem due to the presence of toxic substances. Therefore, it is necessary to consider pre-treatment of rainwater discharged from bridges into the water to minimize the pollution of the water bodies below. Utility Model Content

[0003] To address the aforementioned problems, this application proposes a rainwater drainage device for bridges, comprising an upper inlet section, a diversion pipe below the upper inlet section, an overflow hole on one side of the diversion pipe, and an overflow channel below the overflow hole; a treatment section below the diversion pipe, the treatment section including a treatment pipe connected to the diversion pipe, an inlet cavity at the upper part of the treatment pipe, a middle pipe below the inlet cavity, a backflow cavity at the bottom of the middle pipe, a filter media layer on the outside of the middle pipe, and an outlet cavity above the filter media layer, with an outflow channel on the outside of the outlet cavity, the outlet cavity being connected to the outflow channel through several outflow holes. This application employs a pre-collection method using the upper inlet section, with the lower part using the overflow hole and overflow channel to prevent obstruction when the water flow is too large, while in general, the treatment section performs fine filtration to prevent rainwater from polluting the environment.

[0004] Preferably, it also includes an outer protective pipe connected to the upper inlet section, and the overflow channel and the outflow channel are both located between the outer protective pipe and the processing section.

[0005] Preferably, the upper inlet includes an annular cavity with a cross-sectional area larger than that of the outer protective tube. A lower buffer tube with a closed lower portion is provided in the middle of the annular cavity. The lower buffer tube is located inside the diversion tube and has a lateral through hole on its side.

[0006] Preferably, a support grid is provided at the bottom of the circumferential cavity, a bottom isolation plate is provided at the bottom of the support grid, the lower buffer tube is connected to the bottom isolation plate, and a number of vertical support rods are provided between the bottom isolation plate and the support grid.

[0007] Preferably, the inlet cavity includes an upper inlet filter plate, a buffer gap is provided between the upper inlet filter plate and the bottom of the overflow hole, a vertical support plate is provided below the upper inlet filter plate, and a lower partition plate is provided below the vertical support plate. The middle pipe is connected to the lower partition plate. This application uses the space formed by the upper filter plate and the vertical support plate at the bottom to guide and collect the water flow, maximizing its flowability and reducing the possibility of it flowing out through the overflow hole, thus preventing contamination.

[0008] Preferably, a lower filter plate is provided between the reflux cavity and the filter medium layer, and a plurality of lower through holes are provided on the lower filter plate, with a lower filter screen provided in the lower through holes.

[0009] Preferably, an upper filter plate is provided between the outlet cavity and the filter media layer. The upper filter plate has several upper through holes, and an upper filter screen is installed within each of the upper through holes. The filter media layer in this application generally uses metal filter packing. By providing filter plates with filter screens at its upper and lower parts, the stability of the environment in which the filter media layer is located can be ensured, thus guaranteeing the effectiveness of its filtration process.

[0010] Preferably, a gap is provided between at least one side of the vertical support plate and the inner wall of the processing tube.

[0011] This application can bring the following beneficial effects:

[0012] 1. This application adopts a method of pre-collection using the upper inlet section, and the lower section uses overflow holes and overflow channels to avoid poor drainage when the water flow is too large. Under normal circumstances, the treatment section performs fine filtration to avoid rainwater pollution of the environment.

[0013] 2. This application uses the space formed by the upper filter plate and the vertical support plate at the bottom to guide and collect the water flow, thereby maximizing its flowability, reducing the possibility of it flowing out through the overflow hole, and preventing pollution.

[0014] 3. The filter media layer of this application generally uses metal filter packing. By setting filter plates with filter screens at its upper and lower parts, the stability of the environment in which the filter media layer is located can be ensured, thus ensuring the filtration effect. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this application.

[0017] Figure 2 This is a structural diagram excluding the upper inlet section.

[0018] Figure 3 for Figure 2 A partial diagram of the exploded structure. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the following detailed description, in conjunction with the accompanying drawings, will be provided.

[0020] In the first embodiment, such as Figure 1 As shown, a rainwater drainage device for bridges includes an upper inlet section 1, a diversion pipe 2 below the upper inlet section 1, an overflow hole 3 on one side of the diversion pipe 2, and an overflow channel 4 below the overflow hole 3. A treatment section 5 is located below the diversion pipe 2, the treatment section 5 including a treatment pipe 6 communicating with the diversion pipe 2, an inlet cavity 7 at the upper part of the treatment pipe 6, a middle pipe 8 below the inlet cavity 7, a backflow cavity 9 at the bottom of the middle pipe 8, a filter media layer 10 on the outer side of the middle pipe 8, and an outlet cavity 11 above the filter media layer 10. An outflow channel 12 is located on the outer side of the outlet cavity 11, and the outlet cavity 11 is connected to the outflow channel 12 through several outflow holes 13.

[0021] In use, rainwater first enters the upper inlet 1, and then enters the diversion pipe 2 from the upper inlet 1. If the water flow is too large, in order to avoid affecting the passage of the bridge, it will overflow into the overflow channel 4 through the overflow hole 3. Under normal circumstances, it enters the inlet cavity 7, and then enters the backflow cavity 9 through the middle pipe 8. After being filtered by the filter medium layer 10, it is discharged from the outlet cavity 11 and discharged into the outflow channel 12 through the outflow hole 13, thus completing the final discharge operation.

[0022] In the second embodiment, as Figure 1-3 As shown, a rainwater drainage device for bridges includes an upper inlet section 1, a diversion pipe 2 below the upper inlet section 1, an overflow hole 3 on one side of the diversion pipe 2, and an overflow channel 4 below the overflow hole 3. A treatment section 5 is located below the diversion pipe 2, the treatment section 5 including a treatment pipe 6 communicating with the diversion pipe 2, an inlet cavity 7 at the upper part of the treatment pipe 6, a middle pipe 8 below the inlet cavity 7, a backflow cavity 9 at the bottom of the middle pipe 8, a filter media layer 10 on the outer side of the middle pipe 8, and an outlet cavity 11 above the filter media layer 10. An outflow channel 12 is located on the outer side of the outlet cavity 11, and the outlet cavity 11 is connected to the outflow channel 12 through several outflow holes 13.

[0023] It also includes an outer protective pipe 14 connected to the upper inlet 1. The overflow channel 4 and the outflow channel 12 are both located between the outer protective pipe 14 and the processing unit 5. The upper inlet 1 includes an annular cavity 15, the cross-sectional area of ​​which is larger than that of the outer protective pipe 14. A lower buffer pipe 16 with a closed lower portion is provided in the middle of the annular cavity 15. The lower buffer pipe 16 is located inside the diversion pipe 2, and a lateral through hole 17 is provided on the side of the lower buffer pipe 16. A support grid 18 is provided at the bottom of the annular cavity 15, and a bottom isolation plate 19 is provided at the bottom of the support grid 18. The lower buffer pipe 16 is connected to the bottom isolation plate 19, and a plurality of vertical support rods 20 are provided between the bottom isolation plate 19 and the support grid 18.

[0024] The inlet cavity 7 includes an upper inlet filter plate 21, a buffer gap 22 is provided between the upper inlet filter plate 21 and the bottom of the overflow hole, a vertical support plate 23 is provided below the upper inlet filter plate 21, and a lower partition plate 24 is provided below the vertical support plate 23. The middle tube 8 is connected to the lower partition plate 24. A lower filter plate 25 is provided between the backflow cavity 9 and the filter media layer 10. A plurality of lower through holes are provided on the lower filter plate 25, and a lower filter screen 26 is provided in the lower through holes. An upper filter plate 27 is provided between the outlet cavity 11 and the filter media layer 10. A plurality of upper through holes are provided on the upper filter plate 27, and an upper filter screen 28 is provided in the upper through holes. At least one side of the vertical support plate 23 is spaced apart from the inner wall of the processing tube 6.

[0025] In use, rainwater first enters the upper inlet 1, flows from the circumferential cavity into the lower buffer pipe 16, and then into the diversion pipe 2. If the water flow is too large, in order to avoid affecting the bridge passage, it will overflow into the overflow channel 4 through the overflow hole 3. Under normal circumstances, it enters the inlet cavity 7, passes through the space between the upper inlet filter plate 21 and the vertical support plate 23, enters the middle pipe 8, and then enters the reverse flow cavity 9 through the middle pipe 8. After being filtered by the lower filter screen 26 of the lower filter plate 25 and the filter medium layer 10, it passes through the upper filter screen of the upper filter plate and enters the outlet cavity 11. Then it is discharged into the outflow channel 12 through the outflow hole 13, thus completing the final discharge of rainwater.

[0026] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A rainwater drainage device for bridges, characterized in that: The device includes an upper inlet section, a diversion pipe below the upper inlet section, an overflow hole on one side of the diversion pipe, and an overflow channel below the overflow hole. Below the diversion pipe is a processing section, which includes a processing pipe connected to the diversion pipe. An inlet cavity is located at the upper part of the processing pipe, a middle pipe is located below the inlet cavity, a backflow cavity is located at the bottom of the middle pipe, a filter media layer is located on the outer side of the middle pipe, and an outlet cavity is located above the filter media layer. An outflow channel is located on the outer side of the outlet cavity, and the outlet cavity is connected to the outflow channel through several outflow holes.

2. A rainwater drainage device for bridges as described in claim 1, characterized in that: It also includes an outer protective pipe connected to the upper inlet section, and the overflow channel and the outflow channel are both located between the outer protective pipe and the processing section.

3. A rainwater drainage device for bridges as described in claim 2, characterized in that: The upper inlet includes an annular cavity with a cross-sectional area larger than that of the outer protective tube. A lower buffer tube with a closed lower section is provided in the middle of the annular cavity. The lower buffer tube is located inside the diversion tube and has a lateral through hole on its side.

4. A rainwater drainage device for bridges as described in claim 3, characterized in that: A support grid is provided at the bottom of the circumferential cavity, and a bottom isolation plate is provided at the bottom of the support grid. The lower buffer tube is connected to the bottom isolation plate, and several vertical support rods are provided between the bottom isolation plate and the support grid.

5. A rainwater drainage device for bridges as described in claim 1, characterized in that: The inlet cavity includes an upper inlet filter plate, a buffer gap is provided between the upper inlet filter plate and the bottom of the overflow hole, a vertical support plate is provided at the lower part of the upper inlet filter plate, a lower partition plate is provided at the lower part of the vertical support plate, and the middle tube is connected to the lower partition plate.

6. A rainwater drainage device for bridges as described in claim 5, characterized in that: A lower filter plate is provided between the reflux cavity and the filter medium layer. Several lower through holes are provided on the lower filter plate, and a lower filter screen is provided in the lower through holes.

7. A rainwater drainage device for bridges as described in claim 5, characterized in that: An upper filter plate is provided between the outlet cavity and the filter medium layer. Several upper through holes are provided on the upper filter plate, and an upper filter screen is provided in the upper through holes.

8. A rainwater drainage device for bridges as described in claim 5, characterized in that: A gap is provided between at least one side of the vertical support plate and the inner wall of the processing tube.

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