Municipal drainage device convenient to maintain
By adopting a detachable grate and multi-layer filter structure in municipal manhole covers, the problem of manhole cover clogging is solved, achieving low-cost garbage blocking and stable installation, reducing maintenance costs, and improving the practicality of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-03
AI Technical Summary
Existing municipal manhole covers have complex structures and high costs, which makes them prone to clogging, increasing cleaning workload and wasting funds, and also poses a risk of urban flooding.
It adopts a detachable grate and multi-layer filter structure. Through the use of long slots, filter frames and filter screens, it can block large garbage. The positioning component ensures the stable installation of the grate, making it easy to replace and collect garbage.
It effectively prevents garbage from entering drainage channels, reduces the risk of siltation, reduces maintenance costs, and improves the practicality and scalability of the device.
Smart Images

Figure CN224078353U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal engineering technology, and in particular to a municipal drainage device that is easy to maintain. Background Technology
[0002] Manhole covers are an important part of municipal drainage projects. They are generally available in round and square grid-shaped manhole covers (rain grates). Square grid-shaped manhole covers are often used as small garbage dumps, allowing fruit scraps, fallen leaves, plastic bags and other garbage to enter. This can easily cause blockages in drainage pipes, increase the amount of extra cleaning work, and result in a huge waste of money and time. In some cases, it can even lead to urban flooding due to the inability to drain water in time.
[0003] A search revealed a Chinese patent (publication number CN113668676A) disclosing a municipal drainage structural unit and a municipal drainage structure, comprising: a drainage well installed on the road surface; a well cover, the well cover being installed in a groove in the drainage well; a filter screen, the filter screen being installed on the upper side inside the drainage well; and a cleaning mechanism, the cleaning mechanism being installed on the upper side of the filter screen inside the drainage well. This patented technology can filter debris, preventing it from affecting drainage and improving drainage efficiency. The municipal drainage structure, composed of several sets of municipal drainage structural units, can automatically control each structure within the drainage well, thereby automatically alleviating drainage difficulties. Simultaneously, through modern Internet of Things (IoT) technology, it can achieve real-time monitoring of each drainage structural unit, facilitating staff to monitor rainfall and water accumulation in various areas in real time, thus playing a role in preventing floods, providing early warnings, and ensuring the safety of people's lives and property.
[0004] However, the above-mentioned device still has some drawbacks in actual use. The most obvious one is that for manhole covers that are ubiquitous in municipal engineering, the above-mentioned municipal drainage structure is relatively complex and has multiple stepper motors, resulting in high costs, reducing the practicality of the device, and making it inconvenient to promote and use. Utility Model Content
[0005] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide a municipal drainage device that is easy to maintain.
[0006] The technical solution of this utility model is as follows: a municipal drainage device that is easy to maintain includes a drainage body, a detachable grate is slidably installed inside the drainage body, the detachable grate has a plurality of elongated slots inside, the plurality of elongated slots are arranged at equal intervals, a fixing frame is fixedly connected to the bottom end of the detachable grate, three slots are opened on both sides of the inner wall of the fixing frame, a locking strip is slidably connected inside each slot, a filter frame is fixedly connected between two locking strips, and a filter screen is fixedly connected inside each filter frame.
[0007] By adopting the above technical solution, and through the combined use of filter frames and filter screens, small garbage such as fruit scraps and fallen leaves that enter the drainage body can be blocked, thereby preventing garbage from entering the drainage channel and causing blockage.
[0008] In a preferred embodiment, the drainage body is provided with a positioning component inside. The positioning component includes two positioning mounting slots opened at both ends of the top of the drainage body. Each positioning mounting slot is fitted with a positioning mounting block, and each positioning mounting block is fixedly connected to a detachable grate.
[0009] By adopting the above technical solution, the positioning mounting groove and positioning mounting block work together to play an important positioning role for the detachable grate, preventing the position from shifting during installation.
[0010] In a preferred embodiment, drainage channels are fixedly connected to both sides of the drainage body, and filter boxes are slidably installed inside each drainage channel.
[0011] By adopting the above technical solution and using the filter box, it is possible to filter and collect the garbage flowing in the drainage channel.
[0012] In a preferred embodiment, the inner wall of the drainage channel and both sides of the filter box are fixedly connected to blocking blocks, and the filter box is engaged between the two blocking blocks.
[0013] By adopting the above technical solution and setting up the blocking blocks, the stability of the filter box during use can be improved.
[0014] In a preferred embodiment, two snap-fit components are fixedly connected to both sides of the drainage body, and each snap-fit component has a snap-fit block inside, with a storage box fixedly connected between the two snap-fit blocks.
[0015] By adopting the above technical solution and setting up the collection box, it is possible to conveniently collect the waste inside the filter box and filter screen.
[0016] In a preferred embodiment, each of the detachable grates has two keyed handles fixedly connected to its interior.
[0017] By adopting the above technical solution and using a keyed handle, it is possible for workers to easily remove the detachable grate.
[0018] In a preferred embodiment, the drainage body is made of high-strength polyethylene, the detachable grate is made of aluminum alloy, and the filter screen is made of stainless steel woven mesh.
[0019] By adopting the above technical solution and setting the drainage body with high-strength polyethylene material, the strength of the drainage body can be improved.
[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0021] 1. In this utility model, the solution utilizes elongated slots to block larger branches or plastic bags from the outside. Through the combined use of a filter frame and filter screen, it can block small debris such as fruit scraps and fallen leaves from entering the drainage body, thus preventing blockages caused by garbage entering the drainage channel. Furthermore, the multi-layered filter screen improves the filtration effect. Additionally, workers can remove the detachable grate and fixing frame from the drainage body, facilitating the independent replacement of damaged filter screens and frames. This reduces the maintenance costs associated with overall replacement. Moreover, the maintenance and purchase costs of this device are low, making it suitable for widespread use.
[0022] 2. In this utility model, the positioning mounting groove and the positioning mounting block work together to play an important positioning role for the detachable grate, preventing the position from shifting during installation and ensuring the stable use of the detachable grate. The storage box facilitates the collection of garbage from the filter box and filter screen, and the storage box is detachable for easy emptying of the garbage. Attached Figure Description
[0023] Figure 1 This utility model provides an overall perspective view of a municipal drainage device that is easy to maintain;
[0024] Figure 2 This utility model provides an internal schematic diagram of a municipal drainage device that is easy to maintain.
[0025] Figure 3 This utility model provides a schematic diagram of the internal structure of a fixed frame for a municipal drainage device that is easy to maintain.
[0026] Figure 4 This utility model provides a municipal drainage device that is easy to maintain. Figure 2 Enlarged view of point A in the middle.
[0027] Illustration: 1. Drainage body; 2. Removable grate; 3. Long slotted hole; 4. Keyless handle; 5. Drainage channel; 6. Snap-fit connector; 7. Storage box; 8. Positioning mounting slot; 9. Positioning mounting block; 10. Filter box; 11. Slot; 12. Filter frame; 13. Fixing frame; 14. Clip; 15. Filter screen. Detailed Implementation
[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0029] Reference Figure 1-4 A municipal drainage device that is easy to maintain includes a drainage body 1. A detachable grate 2 is slidably installed inside the drainage body 1. The detachable grate 2 has several elongated slots 3 arranged at equal intervals. A fixing frame 13 is fixedly connected to the bottom end of the detachable grate 2. Three slots 11 are provided on both sides of the inner wall of the fixing frame 13. A retaining strip 14 is slidably connected inside each slot 11. A filter frame 12 is fixedly connected between two retaining strips 14. A filter screen 15 is fixedly connected inside each filter frame 12. This design has a simple structure and is easy to operate. It can utilize the elongated slots 3 to drain large tree branches from the outside. The filter can be blocked by branches or plastic bags, and through the combined use of filter frame 12 and filter screen 15, small garbage such as fruit scraps and fallen leaves that enter the drainage body 1 can be blocked, thereby preventing garbage from entering the drainage channel 5 and causing clogging. The multi-layer filter screen 15 can improve the filtration effect of garbage. At the same time, the detachable grate 2 and fixed frame 13 can be removed from the drainage body 1, making it easy to replace the damaged filter screen 15 and filter frame 12 independently. This reduces the maintenance cost of replacing the whole unit. The maintenance cost and purchase cost of this device are low, making it suitable for widespread use.
[0030] Specifically, the drainage body 1 is equipped with a positioning component, which includes two positioning mounting slots 8 at both ends of the top of the drainage body 1. The positioning mounting slots 8 and positioning mounting blocks 9 work together to position the detachable grate 2, preventing positional displacement during installation and ensuring stable use of the detachable grate 2. Positioning mounting blocks 9 are engaged inside the positioning mounting slots 8 and are fixedly connected to the detachable grate 2. Drainage channels 5 are fixedly connected to both sides of the drainage body 1. Filter boxes 10 are slidably installed inside the drainage channels 5. Blocks are fixedly connected to the inner walls of the drainage channels 5 and to both sides of the filter boxes 10. The filter boxes 10 are used to filter and collect the garbage flowing in the drainage channels 5. The filter boxes 10 are engaged between the two block blocks, which improves the stability of the filter boxes 10 during use.
[0031] Specifically, two snap-fit pieces 6 are fixedly connected to both sides of the drainage body 1. Each snap-fit piece 6 has a snap-fit block inside. The collection box 7 facilitates the collection of garbage in the filter box 10 and filter screen 15. The collection box 7 is detachable, making it easy to empty the garbage inside. The collection box 7 is fixedly connected between the two snap-fit blocks. Two key-type handles 4 are fixedly connected inside the detachable grate 2. The drainage body 1 is made of high-strength polyethylene material, and the detachable grate 2 is made of aluminum alloy. The use of high-strength polyethylene material in the drainage body 1 can improve the strength of the drainage body 1. The filter screen 15 is made of stainless steel woven mesh.
[0032] Working principle: First, the elongated slot 3 in this design can block larger branches or plastic bags from the outside. Furthermore, the combined use of the filter frame 12 and filter screen 15 can prevent small debris such as fruit scraps and fallen leaves from entering the drainage body 1, thus preventing blockages in the drainage channel 5. The multi-layered filter screen 15 also improves the filtration effect. Additionally, the removable grate 2 and fixed frame 13 can be easily removed from the drainage body 1, facilitating the removal of damaged filter screens 15 and filter frames 1. 2. Independent replacement can reduce the maintenance costs associated with overall replacement. The maintenance cost of this device is lower than the purchase cost. The positioning mounting slot 8 and the positioning mounting block 9 work together to play an important role in positioning the detachable grate 2, preventing the position from shifting during installation and ensuring the stable use of the detachable grate 2. The collection box 7 facilitates the collection of garbage from the filter box 10 and the filter screen 15. The collection box 7 is detachable, making it easy to empty the garbage inside.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0034] The above are merely preferred embodiments of this application and are not intended to limit this application. Although this application 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 application should be included within the protection scope of this application.
Claims
1. A municipal drainage device that is easy to maintain, comprising a drainage body (1), characterized in that: The inside of the drainage body (1) is slidably installed with a detachable grate (2), a plurality of long slot holes (3) are arranged equidistantly in the inside of the detachable grate (2), a fixed frame (13) is fixedly connected to the bottom end of the detachable grate (2), three clamping grooves (11) are arranged on the inner wall of the fixed frame (13), clamping strips (14) are slidably connected to the inside of the clamping grooves (11), and filter frames (12) are fixedly connected between the two clamping strips (14).
2. A municipal drainage device of the type specified in claim 1, characterized in that: The inside of the drainage body (1) is provided with a positioning assembly, the positioning assembly comprises two positioning installation grooves (8) arranged at the two ends of the top of the drainage body (1), positioning installation blocks (9) are clamped in the inside of the positioning installation grooves (8), and the positioning installation blocks (9) are fixedly connected with the detachable grate (2).
3. A municipal drainage device of claim 1, wherein: The two sides of the drainage body (1) are fixedly connected with drainage channels (5), and the inside of the drainage channels (5) is slidably installed with filter boxes (10).
4. A municipal drainage device of the type specified in claim 3, characterised in that: The inner wall of the drainage channel (5) and located on the two sides of the filter box (10) are fixedly connected with blocking blocks, and the filter box (10) is clamped between the two blocking blocks.
5. A municipal drainage device of claim 1, wherein: The two sides of the drainage body (1) are fixedly connected with two clamping pieces (6), the inside of the clamping pieces (6) is clamped with clamping blocks, and the two clamping blocks are fixedly connected with receiving boxes (7).
6. A municipal drainage device of the type defined in claim 1, characterized in that: The inside of the detachable grate (2) is fixedly connected with two key-in type handles (4).
7. A maintenance-friendly municipal drainage arrangement according to claim 1, characterized in that The drainage body (1) is made of high-strength polyethylene material, the detachable grate (2) is made of aluminum alloy material, and the filter net (15) is made of stainless steel woven mesh.
Citation Information
Patent Citations
Municipal drainage structure unit and municipal drainage structure
CN113668676A