A municipal bridge drainage device
By introducing water guide boxes, grids, and expansion joints into the drainage system of municipal bridges, the problems of water flow and bridge adaptability have been solved, achieving efficient drainage and reduced blockage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGYING ZECHENG MUNICIPAL ENGINEERING CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-03
AI Technical Summary
Existing municipal bridge drainage systems increase air pressure when water enters, reducing water flow and hindering ventilation. Additionally, the fixed length of the drainage pipes cannot accommodate varying bridge thicknesses.
A drainage device was designed, comprising a drainage tank, a water guide tank, a grid, and a telescopic component. The grid accelerates the flow of accumulated water, the filter screen filters out debris, and the telescopic component adjusts the length of the drainage pipe to accommodate different bridge thicknesses.
It accelerates the flow of water and air, reduces blockages, adapts to the installation requirements of different bridge thicknesses, and improves drainage efficiency and applicability.
Smart Images
Figure CN224451369U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal bridges, specifically a municipal bridge drainage device. Background Technology
[0002] Municipal bridges are transportation bridges in cities or towns that cross rivers, roads, railways or other obstacles. In order to ensure the structural and traffic safety of the bridge and to prevent rainwater, snowmelt and other water from accumulating on the bridge, it is necessary to drain the water.
[0003] The publication number CN218842859U discloses a drainage device for preventing blockages in municipal bridges, including a bridge body and a drainage cover. The drainage cover is embedded in the surface of the bridge body, and a mixing component is provided at the bottom of the drainage cover. The mixing component includes a turntable seat, a shaft, a rotating column, a spiral blade, a horizontal plate, and a stirring plate.
[0004] The aforementioned drainage device can stir up the particles accumulated inside the cavity to prevent them from settling and condensing. However, when draining, the water entering the drainage tank will increase the air pressure inside, reduce the flow of water, and make it difficult to vent air while water is entering. In addition, different bridge body thicknesses result in limited drainage pipe length, making it inconvenient to adjust the connection length. Utility Model Content
[0005] The purpose of this utility model is to provide a municipal bridge drainage device to solve the technical problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A municipal bridge drainage device includes a drainage tank, a drainage assembly installed inside the drainage tank, a telescopic assembly installed at the bottom of the drainage tank, a water guide tank installed on top of the drainage tank, a plurality of first grid meshes fixedly installed on one side of the water guide tank, a plurality of second grid meshes fixedly installed on the top of the drainage tank, a filter screen fixedly installed inside the drainage tank, and a plurality of support columns fixedly installed between the top of the filter screen and the water guide tank.
[0008] Preferably, the interiors of the water guide tank and the drainage tank are interconnected, and the first grid mesh and the second grid mesh correspond to each other.
[0009] Preferably, the filter screen is located inside the drain tank at an angle, and the top of the support column is fixed at the junction of the water guide tank and the drain tank.
[0010] Preferably, the telescopic component includes a drain pipe, which is fixedly installed at the bottom center of the drain tank. A spiral tube is connected inside the drain pipe, and a sealing disc and a knob are fixedly installed at the bottom end of the spiral tube. A connecting pipe is fixedly installed at the bottom of the knob.
[0011] Preferably, the drain pipe has a threaded groove inside, and the threaded tube is located inside the drain pipe and is connected by a thread.
[0012] Preferably, the interiors of the spiral tube and the connecting tube are interconnected, and the outer diameter of the sealing disc is larger than the outer diameter of the drain pipe.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1) This drainage device, by setting up drainage components, allows accumulated water to enter the drainage tank through the second grid, while air inside the drainage tank is discharged through the first grid, accelerating the flow of accumulated water and improving the flow of water and air inside. Through the inclined filter screen, it can filter out debris and sludge in the accumulated water, reducing internal blockage.
[0015] 2) This drainage device, by setting a telescopic component, has a threaded connection between the screw tube and the inside of the drainage pipe. The length of the drainage pipe can be easily adjusted by rotating the knob. It is suitable for installation in bridge bodies of different thicknesses. The sealing plate fixes the screw tube after connection and seals the bottom of the reserved drainage hole. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a municipal bridge drainage device according to an embodiment of the present utility model;
[0017] Figure 2 This is a schematic diagram of the drainage component in an embodiment of the present invention;
[0018] Figure 3 This is a schematic diagram of the internal structure of the telescopic component in an embodiment of this utility model.
[0019] In the diagram: 1. Drainage tank; 2. Drainage assembly; 3. Telescopic assembly; 4. Water guide tank; 5. First grid mesh; 6. Second grid mesh; 7. Filter screen; 8. Support column; 9. Drainage pipe; 10. Screw pipe; 11. Sealing disc; 12. Knob; 13. Connecting pipe. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example 1
[0022] Combination Figures 1-3 A municipal bridge drainage device includes a drainage box 1, a drainage component 2 installed inside the drainage box 1, and a telescopic component 3 installed at the bottom of the drainage box 1.
[0023] See Figure 2 Furthermore, the drainage assembly 2 includes a water guide tank 4, which is installed on the top of the drainage tank 1. Several first grid meshes 5 are fixedly installed on one side of the water guide tank 4, and several second grid meshes 6 are fixedly installed on the top of the drainage tank 1. A filter screen 7 is fixedly installed inside the drainage tank 1, and several support columns 8 are fixedly installed between the top of the filter screen 7 and the water guide tank 4.
[0024] The water guide tank 4 and the drainage tank 1 are interconnected. The first grid 5 and the second grid 6 correspond to each other. The water guide tank 4 is used for the air circulation inside the drainage tank 1. The accumulated water enters the drainage tank 1 and is discharged after passing through the first grid 5 and the second grid 6.
[0025] The filter screen 7 is located inside the drainage tank 1 and is set at an angle. The top of the support column 8 is fixed at the junction of the water guide tank 4 and the drainage tank 1. The filter screen 7 is used to filter out debris and sludge in the accumulated water.
[0026] Specifically, water on the bridge surface enters the drainage tank 1 through the second grid 6, and air in the drainage tank 1 is discharged through the first grid 5, accelerating the discharge of water. The filter screen 7 filters out debris or sludge in the water, reducing internal blockage.
[0027] Example 2
[0028] See Figure 3 Furthermore, based on Embodiment 1, the telescopic component 3 includes a drain pipe 9, which is fixedly installed at the bottom center of the drain box 1. A screw pipe 10 is connected inside the drain pipe 9. A sealing plate 11 and a knob 12 are fixedly installed at the bottom end of the screw pipe 10. A connecting pipe 13 is fixedly installed at the bottom of the knob 12. The drain pipe 9 is used to be inserted into the drain hole reserved in the bridge body. The bottom end of the connecting pipe 13 is used to connect a water pipe.
[0029] The drain pipe 9 has a threaded groove inside, and the screw tube 10 is located inside the drain pipe 9 and is threadedly connected. The screw tube 10 slides inside the drain pipe 9 through the thread to adjust the length of the drain pipe 9.
[0030] The interiors of the spiral tube 10 and the connecting tube 13 are interconnected. The outer diameter of the sealing disc 11 is larger than the outer diameter of the drain pipe 9. The sealing disc 11 contacts the bottom of the bridge body and seals the bottom of the reserved drain hole of the bridge body.
[0031] Specifically, the drain pipe 9 is inserted into the reserved drain hole, so that the screw pipe 10 slides inside the drain pipe 9 through the thread, thereby adjusting the connection length of the drain pipe 9, which is suitable for bridge bodies of different thicknesses.
[0032] In actual operation, multiple drainage boxes 1 are installed and fixed in the drainage groove of the bridge body in sequence, so that the drainage pipe 9 is inserted into the corresponding reserved drainage hole. The bottom end of the drainage pipe 9 is used to connect the water pipe to drain the accumulated water.
[0033] During drainage, water on the bridge surface enters the drainage tank 1 through the second grid 6, and air in the drainage tank 1 is discharged through the first grid 5. When there is a lot of water or the second grid 6 is blocked, the excess water is discharged into the drainage tank 1 through the first grid 5. Debris or sludge in the water is filtered by the filter screen 7. The inclined filter screen 7 causes the debris or sludge to slide to one side, and the water flows out from the bottom of the drainage tank 1. When the water level in the drainage tank 1 is too high, the debris and sludge float and flow with the water to a designated location for centralized treatment.
[0034] When the bridge is extended or retracted, the drainage box 1 is placed in the drainage groove of the bridge body, and the drainage pipe 9 is inserted into the reserved drainage hole. When the bridge is fixed and sealed, the screw tube 10 is connected to the drainage pipe 9. Rotating the knob 12 allows the screw tube 10 to slide inside the drainage pipe 9 through the thread, thereby adjusting the connection length of the drainage pipe 9. This is suitable for bridge bodies of different thicknesses. The top of the sealing plate 11 is pressed against the bottom of the reserved drainage hole, thereby fixing the screw tube 10.
[0035] By setting up the drainage component 2, the accumulated water enters the drainage tank 1 through the second grid 6, and the air in the drainage tank 1 is discharged through the first grid 5, which accelerates the flow of accumulated water and improves the flow of internal accumulated water and air. The inclined filter screen 7 can filter out the debris and sludge in the accumulated water and reduce internal blockage. By setting up the telescopic component 3, the screw tube 10 is threadedly connected to the inside of the drainage pipe 9. By rotating the knob 12, the length of the drainage pipe 9 can be easily adjusted, which is suitable for installation in bridge bodies of different thicknesses. The sealing plate 11 fixes the screw tube 10 after connection and seals the bottom end of the reserved drainage hole.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A municipal bridge drainage device comprising a drainage tank (1), characterized in that: The drainage tank (1) is equipped with a drainage assembly (2) inside, and a telescopic assembly (3) is installed at the bottom of the drainage tank (1). The drainage assembly (2) includes a water guide tank (4), which is installed on the top of the drainage tank (1). A plurality of first grid meshes (5) are fixedly installed on one side of the water guide tank (4), and a plurality of second grid meshes (6) are fixedly installed on the top of the drainage tank (1). A filter screen (7) is fixedly installed inside the drainage tank (1), and a plurality of support columns (8) are fixedly installed between the top of the filter screen (7) and the water guide tank (4).
2. A municipal bridge drainage device according to claim 1, characterized in that: The water guide box (4) and the drainage box (1) are interconnected, and the first grid mesh (5) and the second grid mesh (6) correspond to each other.
3. A municipal bridge drainage device according to claim 1, characterized in that: The filter screen (7) is located inside the drain tank (1) and is set at an angle. The top of the support column (8) is fixed at the junction of the water guide tank (4) and the drain tank (1).
4. A municipal bridge drainage device according to claim 1, characterized in that: The telescopic assembly (3) includes a drain pipe (9), which is fixedly installed at the bottom center of the drain box (1). A screw pipe (10) is connected inside the drain pipe (9). A sealing plate (11) and a knob (12) are fixedly installed at the bottom end of the screw pipe (10). A connecting pipe (13) is fixedly installed at the bottom of the knob (12).
5. A municipal bridge drainage device according to claim 4, characterized in that: The drain pipe (9) has a threaded groove inside, and the threaded tube (10) is located inside the drain pipe (9) and is connected by a thread.
6. A municipal bridge drainage device according to claim 4, characterized in that: The interiors of the spiral tube (10) and the connecting tube (13) are interconnected, and the outer diameter of the sealing disc (11) is larger than the outer diameter of the drain pipe (9).