Drainage device for urban drainage
By designing a drainage device with a dual filtration system featuring gears and scrapers, the problem of garbage blockage was solved, achieving efficient garbage filtration and drainage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUZHOU GANDONG HIGHWAY DESIGNING INST
- Filing Date
- 2025-03-25
- Publication Date
- 2026-05-15
AI Technical Summary
Existing urban drainage systems are unable to effectively filter garbage, leading to sewer blockages, increased dredging costs, and reduced drainage efficiency.
A drainage device comprising a protective cover, a drain cover, and a filter cover was designed. The device utilizes water flow power to drive a gear and scraper system to achieve dual filtration and prevent large debris from entering the sewer.
The dual filtration mechanism effectively prevents garbage from entering the sewer, improves drainage efficiency, reduces blockages, and lowers dredging costs.
Smart Images

Figure CN224244076U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of urban drainage technology, and specifically relates to a drainage device for urban drainage. Background Technology
[0002] Urban drainage systems are engineering facilities systems for treating and discharging urban sewage and rainwater. They are a component of urban public utilities, and urban drainage system planning is an integral part of urban master planning. Urban drainage systems typically consist of drainage pipes and sewage treatment plants. Drainage devices are an essential component of drainage systems, and manhole covers are a type of drainage device.
[0003] Currently, when there is excessive water accumulation on roads during the rainy season, manhole covers are usually opened to speed up drainage. However, after the manhole cover is opened, the drainage device is placed on the manhole opening for protection, to improve safety measures and prevent pedestrians from accidentally falling in. However, ordinary drainage devices cannot filter garbage during use, and larger pieces of garbage on the road will also be washed into the sewer, which will eventually cause sewer blockage and result in unnecessary cleaning costs. In addition, leaves and other garbage may also be placed at the drain outlet of the drainage device, causing blockage and affecting the drainage effect. Utility Model Content
[0004] To address the problems mentioned in the background art, this utility model provides a drainage device for urban drainage, which solves the problems of the inability to filter garbage, the fact that larger garbage on the road will be washed into the sewer, causing sewer blockage over time and resulting in unnecessary dredging costs, and the problem of garbage such as leaves also being located at the drain outlet of the drainage device, causing blockage and affecting the drainage effect.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a drainage device for urban drainage, comprising an installation ring, a support frame at the top of the installation ring, a first connecting rod at the bottom of the support frame, a protective cover at the bottom of the first connecting rod, through grooves on the surface of the protective cover, a movable ring at the top of the protective cover, L-shaped scrapers on the surface of the movable ring, a connecting ring inside the protective cover, a drain cover fixedly installed at the bottom of the connecting ring, a fixing block at the bottom of the drain cover, a second rotating shaft on one side of the fixing block, a toggle plate on the surface of the second rotating shaft, second bevel gears at both ends of the surface of the second rotating shaft, a first bevel gear meshing with one side of the second bevel gear, a first rotating shaft on one side of the first bevel gear, a gear penetrating the protective cover at one end of the first rotating shaft, and teeth on the inner side of the movable ring, with the gear meshing with the teeth.
[0006] Preferably, bolts are provided at both ends of the support frame, and one end of the bolt passes through the support frame and is threadedly connected to the mounting ring.
[0007] Preferably, the connecting ring and the protective cover are threaded together.
[0008] Preferably, a second connecting rod is provided around the perimeter of the surface of the drain cover, a threaded connecting ring is provided at one end of the second connecting rod, and the threaded connecting ring is threadedly connected to the second connecting rod. A connecting fixing ring is provided at the bottom of the threaded connecting ring, and a filter cover is provided at the bottom of the connecting fixing ring.
[0009] Preferably, the mounting ring is provided with support legs around its bottom, and the bottom of each support leg is provided with an anti-slip base.
[0010] Preferably, there are two sets of the second bevel gear and the first bevel gear, and the rotation directions of the two sets of the second bevel gear and the first bevel gear are the same.
[0011] Preferably, the bottom of the protective cover is on the same horizontal plane as the bottom of the anti-slip base.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] The accumulated water flows through the grooves on the surface of the protective cover into the inside of the cover, and then into the interior of the drain cover. The water contacts the actuating plate inside the drain cover, and the force of the water drives the second rotating shaft to rotate. This second rotating shaft, through a second bevel gear, drives the first bevel gear to rotate, which in turn drives the first rotating shaft and gears to rotate. The gears, through their teeth, drive the movable ring to rotate, which in turn drives the L-shaped scraper to rotate on the surface of the protective cover. The L-shaped scraper scrapes the cover, preventing leaves and other debris from sticking to its surface and affecting drainage. The water then flows through the drain cover into the filter cover, where it filters the drainage again, preventing foreign objects from entering and causing blockages, thus improving drainage efficiency. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0015] Figure 1 This is a first three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a second three-dimensional structural diagram of the present invention;
[0017] Figure 3 This is a schematic diagram of the first bevel gear of this utility model;
[0018] Figure 4 This is a schematic diagram of the toggle plate of this utility model;
[0019] Figure 5 This is a schematic diagram of the water cover of this utility model.
[0020] In the diagram: 1. Mounting ring; 2. Support frame; 3. Protective cover; 4. Movable ring; 5. First connecting rod; 6. Gear; 7. Tooth; 8. L-shaped scraper; 9. Through groove; 10. Support leg; 11. Anti-slip base; 12. Connecting and fixing ring; 13. Filter cover; 14. Threaded connecting ring; 15. Second connecting rod; 16. Drain cover; 17. Bolt; 18. First rotating shaft; 19. First bevel gear; 20. Connecting ring; 21. Second rotating shaft; 22. Actuating plate; 23. Second bevel gear; 24. Fixing block. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-5 This utility model provides the following technical solution: a drainage device for urban drainage, including a mounting ring 1, a support frame 2 at the top of the mounting ring 1, a first connecting rod 5 at the bottom of the support frame 2, a protective cover 3 at the bottom of the first connecting rod 5, through grooves 9 respectively opened on the surface of the protective cover 3, a movable ring 4 at the top of the protective cover 3, L-shaped scrapers 8 respectively provided on the surface of the movable ring 4, a connecting ring 20 inside the protective cover 3, and a drain cover 16 fixedly installed at the bottom of the connecting ring 20. The bottom of each component is provided with a fixing block 24. A second rotating shaft 21 is provided on one side of the fixing block 24. A toggle plate 22 is provided on the surface of the second rotating shaft 21. A second bevel gear 23 is provided at both ends of the surface of the second rotating shaft 21. A first bevel gear 19 is meshed with one side of the second bevel gear 23. A first rotating shaft 18 is provided on one side of the first bevel gear 19. A gear 6 is connected to one end of the first rotating shaft 18 through the protective cover 3. Teeth 7 are provided on the inner side of the movable ring 4. The gear 6 is meshed with the teeth 7.
[0023] In this embodiment, the support frame 2 is fixed by setting bolts 17, thereby increasing the stability of the installation.
[0024] In this embodiment, the connecting ring 20 is threadedly connected to the protective cover 3, thereby increasing the convenience of connection.
[0025] In this embodiment: by setting a threaded connecting ring 14 and a second connecting rod 15, the second connecting rod 15 and the threaded connecting ring 14 are threadedly connected, thereby increasing the convenience of connection, facilitating the disassembly and assembly of the filter cover 13, and increasing the convenience of cleaning the inside of the filter cover 13.
[0026] The working principle and usage process of this utility model are as follows: After installation, when using this utility model, open the drain cover and place the device at the drain opening, ensuring the protective cover 3 is positioned outside the drain opening to protect it. The drain cover 16 and filter cover 13 are located inside the drain opening, allowing accumulated water to flow through the groove 9 on the surface of the protective cover 3 into its inner side, and then into the interior of the drain cover 16. The water contacts the actuating plate 22 inside the drain cover 16, and the force of the water drives the second rotating shaft 21 to rotate. The second rotating shaft 21, through the second bevel gear 23, drives the first bevel gear 19 to rotate, thereby... The first bevel gear 19 drives the first rotating shaft 18 and gear 6 to rotate. Gear 6 drives the movable ring 4 to rotate through teeth 7. This causes the movable ring 4 to drive the L-shaped scraper 8 to rotate on the surface of the protective cover 3. The L-shaped scraper 8 scrapes the protective cover 3 to prevent leaves and other foreign objects from sticking to its surface and affecting the drainage effect. Water flows into the interior of the filter cover 13 through the drain cover 16, allowing the filter cover 13 to filter the drainage again and prevent foreign objects from flowing in. Through this dual operation, foreign objects and garbage can be effectively filtered to prevent them from entering and causing blockage, thereby improving the drainage effect. All electrical equipment in this device is powered by an external power source.
[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A drainage device for urban drainage, comprising a mounting ring (1), characterized in that: The top of the mounting ring (1) is provided with a support frame (2), the bottom of the support frame (2) is provided with a first connecting rod (5), the bottom of the first connecting rod (5) is provided with a protective cover (3), the surface of the protective cover (3) is provided with through grooves (9), the top of the protective cover (3) is provided with a movable ring (4), the surface of the movable ring (4) is provided with L-shaped scrapers (8), the inside of the protective cover (3) is provided with a connecting ring (20), the bottom of the connecting ring (20) is fixedly installed with a drain cover (16), the bottom of the drain cover (16) is provided with fixing blocks (24), and so on. A second rotating shaft (21) is provided on one side of the fixed block (24). A toggle plate (22) is provided on the surface of the second rotating shaft (21). A second bevel gear (23) is provided at both ends of the surface of the second rotating shaft (21). A first bevel gear (19) is meshed with one side of the second bevel gear (23). A first rotating shaft (18) is provided on one side of the first bevel gear (19). A gear (6) is connected to one end of the first rotating shaft (18) through the protective cover (3). Teeth (7) are provided on the inner side of the movable ring (4), and the gear (6) meshes with the teeth (7).
2. A drainage device for urban drainage according to claim 1, characterized in that: Bolts (17) are provided at both ends of the support frame (2), and one end of the bolt (17) passes through the support frame (2) and is threadedly connected to the mounting ring (1).
3. A drainage device for urban drainage according to claim 1, characterized in that: The connecting ring (20) is threadedly connected to the protective cover (3).
4. A drainage device for urban drainage according to claim 1, characterized in that: The surface of the water cover (16) is provided with a second connecting rod (15) around its perimeter. One end of the second connecting rod (15) is provided with a threaded connecting ring (14), and the threaded connecting ring (14) is threadedly connected to the second connecting rod (15). A connecting fixing ring (12) is provided at the bottom of the threaded connecting ring (14), and a filter cover (13) is provided at the bottom of the connecting fixing ring (12).
5. A drainage device for urban drainage according to claim 1, characterized in that: Support legs (10) are provided around the bottom of the mounting ring (1), and anti-slip bases (11) are provided at the bottom of the support legs (10).
6. A drainage device for urban drainage according to claim 1, characterized in that: There are two sets of the second bevel gear (23) and the first bevel gear (19), and the rotation directions of the two sets of the second bevel gear (23) and the first bevel gear (19) are the same.
7. A drainage device for urban drainage according to claim 1, characterized in that: The bottom of the protective cover (3) is on the same horizontal plane as the bottom of the anti-slip base (11).