Drainage channel for water conservancy project
By installing support edges and filter screens on the upper part of both sides of the drainage ditch body, combined with the design of limit strips and plug-in blocks, the problem of drainage ditch blockage is solved, the effective filtration of debris and simplified cleaning are achieved, and the stability and connection strength of the filter screen are enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN PIPELINE ENG GROUP
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-17
AI Technical Summary
Existing drainage ditches are easily clogged by large debris during drainage, and existing filter devices are prone to deformation and detachment, making cleaning difficult.
Support edges are installed on the upper part of both sides of the drainage ditch body, and filter screens are pressed onto the upper side of the support edges by pressing blocks. The upper cover is pressed onto the upper side of the pressing blocks. The filter screen is used to initially filter out debris. The stability of the filter screen is enhanced by limiting strips and plug-in blocks. The support edges and reinforcing ribs of reinforced concrete structure are used to improve the connection strength.
It effectively filters out larger debris, prevents blockages in the drain, simplifies the cleaning process, ensures the stability and connection strength of the filter screen, and reduces the impact on the top cover.
Smart Images

Figure CN224133870U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drainage ditch technology, and in particular relates to a drainage ditch for water conservancy projects. Background Technology
[0002] In water conservancy projects, drainage ditches are often used as the key component of the drainage system to remove road surface water. Typically, drainage ditches are installed on both sides of the road and covered with covers. However, during drainage, larger debris from the road surface can also enter the drainage ditches with the water flow. This debris accumulates inside the ditches, easily causing blockages and making cleaning difficult. To prevent debris from entering the drainage ditches, wire mesh is currently used, installed under the cover to filter out larger debris from the water flow. However, in this structure, the wire mesh is easily deformed and detaches from the cover, resulting in ineffective filtration. Utility Model Content
[0003] In view of this, the present invention aims to overcome the shortcomings of the above-mentioned problems in the prior art and proposes a drainage channel for water conservancy projects.
[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0005] A drainage ditch for water conservancy projects includes a drainage ditch body and a top cover. Supporting edges are provided on the upper part of the inner walls on the left and right sides of the drainage ditch body. A filter screen is provided between the upper side walls of the two supporting edges. Strip-shaped pressing blocks are provided on the upper side of the filter screen corresponding to the supporting edges. The top opening of the drainage ditch body is covered with a top cover with multiple strip holes, and the top cover is pressed between the upper side walls of the two pressing blocks.
[0006] Furthermore, limit strips are fixed to the upper side of both sides of the filter screen, and limit grooves are opened on the bottom side of the pressing block corresponding to the limit strips, with the limit strips snapping into the limit grooves.
[0007] Furthermore, multiple grooves are provided on the opposite side of each of the two pressing blocks, and a plug-in block is fixed downward at the corresponding groove on the bottom of the top cover, with the plug-in block inserted into the corresponding groove.
[0008] Furthermore, the groove width is greater than the plug-in block width, and the side of the plug-in block facing the pressing block abuts against the inner wall of the groove.
[0009] Furthermore, each support is provided with multiple reinforcing ribs along its bottom side and between the inner wall of the corresponding drainage channel body.
[0010] Furthermore, the drainage ditch body, supporting edges, and reinforcing ribs are integrally cast structures, and are constructed using reinforced concrete.
[0011] Compared with the prior art, this utility model has the following advantages:
[0012] The drainage ditch for water conservancy projects described in this utility model has support edges set on the upper part of both side walls of the drainage ditch body. A filter screen is pressed between the upper sides of the two support edges by pressing blocks. Finally, the top cover is pressed between the upper sides of the two pressing blocks. The filter screen can simply filter out larger debris such as plastic bags, leaves and branches in the water flowing into the drainage ditch body, avoiding blockage of the channel inside the drainage ditch body and affecting drainage. In addition, the filter screen is set near the bottom of the top cover, leaving a certain distance between them. When debris is trapped on the filter screen, it will not block the entire top cover, which means it will not have a significant impact on drainage at the top cover. Moreover, when there is a lot of debris, workers can use other tools to move the debris along the slots in the top cover and clean it out. Attached Figure Description
[0013] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0014] Figure 1 This is a schematic diagram of the drainage ditch structure for water conservancy projects according to an embodiment of the present utility model;
[0015] Figure 2 This is a front view of the drainage ditch for water conservancy projects described in an embodiment of this utility model;
[0016] Figure 3 This is an exploded view of the drainage ditch for water conservancy projects described in this embodiment of the invention at the top cover.
[0017] Explanation of reference numerals in the attached figures:
[0018] 1. Drainage channel body; 11. Support edge; 12. Reinforcing rib; 2. Top cover; 21. Strip hole; 22. Insertion block; 3. Filter screen; 31. Limiting strip; 4. Pressing block; 41. Limiting groove; 42. Groove. Detailed Implementation
[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0023] As shown in the figure, a drainage ditch for water conservancy projects includes a drainage ditch body 1 and a cover 2. Supporting edges 11 are provided on the upper part of the inner walls on the left and right sides of the drainage ditch body 1. A filter screen 3 is provided between the upper side walls of the two supporting edges 11. Strip-shaped pressing blocks 4 are provided on the upper side of the filter screen 3 corresponding to the supporting edges 11. The upper opening of the drainage ditch body 1 is covered with a cover 2 having multiple strip-shaped holes 21, and the cover 2 is pressed between the upper side walls of the two pressing blocks 4. In this embodiment, support edges 11 are provided on the upper part of both side walls of the drainage ditch body 1, and filter screen 3 is pressed between the upper sides of the two support edges 11 by pressing blocks 4. Finally, the top cover 2 is pressed between the upper sides of the two pressing blocks 4. The filter screen 3 can simply filter out larger debris such as plastic bags, leaves and branches in the water discharged into the drainage ditch body 1, so as to avoid clogging the channel inside the drainage ditch body 1 and affecting drainage. In this embodiment, the filter screen 3 is set near the bottom of the top cover 2, with a certain distance between it and the top cover 2. When the debris is trapped on the filter screen 3, it will not block the entire top cover 2, and it can be said that it will not have a significant impact on the drainage at the top cover 2. When there is a lot of debris, the staff can use other tools to move the debris along the strip hole 21 of the top cover 2 and clean it out. In this embodiment, the filter screen 3 is initially fixed by the pressing block 4 before the top cover 2 is placed. If the top cover 2 is placed directly on the filter screen 3, the filter screen 3 may deform and shift during the placement of the top cover 2, which is not conducive to the fixation of the filter screen 3.
[0024] Limiting strips 31 are fixed to the upper sides of both left and right edges of the filter screen 3. Limiting grooves 41 are formed on the bottom side of the pressing block 4 corresponding to the limiting strips 31, and the limiting strips 31 are engaged in the limiting grooves 41. In this embodiment, by setting the limiting strips 31 on the filter screen 3 and limiting the limiting strips 31 in the limiting grooves 41 of the pressing block 4, it is ensured that the middle of the filter screen 3 will not sink after long-term use, thereby ensuring that the left and right ends of the filter screen 3 will not detach from the support edge 11.
[0025] Multiple grooves 42 are provided on opposite sides of the two pressing blocks 4. Insertion blocks 22 are fixed downwards at the corresponding grooves 42 on the bottom of the upper cover 2, and the insertion blocks 22 are inserted into the corresponding grooves 42. In this embodiment, the grooves 42 on the pressing blocks 4 and the insertion blocks 22 at the bottom of the upper cover 2 ensure that the insertion blocks 22 abut against the grooves 42, preventing the pressing blocks 4 from shifting and avoiding detachment of the pressing blocks 4 and the edge of the filter screen 3 on that side from the corresponding support edge 11.
[0026] The width of the groove 42 is greater than the width of the plug block 22, and the side of the plug block 22 facing the pressing block 4 abuts against the inner wall of the groove 42. This design facilitates the insertion of the plug block 22 into the groove 42 while ensuring that after the top cover 2 is installed, the pressing block 4 drives the filter screen 3 to be in an extended state.
[0027] Multiple reinforcing ribs 12 are provided between the bottom side of each support 11 and the inner wall of the corresponding drainage channel body 1 to enhance the connection strength of the support 11.
[0028] The main body of the drainage ditch 1, the supporting edge 11 and the reinforcing rib 12 are cast as a whole and are made of reinforced concrete.
[0029] The upper surface of the cover 2 is flush with or lower than the upper surface of the drainage ditch body 1.
[0030] In this embodiment, the filter screen 3 is a wire mesh, and the limiting strip 31 is welded and fixed to the upper side of the filter screen 3.
[0031] The construction process in this embodiment is as follows:
[0032] After the main body 1 of the drainage ditch is installed in place, the filter screen 3 is installed between the upper sides of the two support edges 11. During the fixing of the filter screen 3, it is installed in conjunction with the pressing block 4. The limiting strip 31 on the filter screen 3 is snapped into the limiting groove 41 at the bottom of the pressing block 4. The pressing block 4 is moved towards the inner wall of the corresponding drainage ditch body 1, so that the filter screen 3 is in a stretched or even taut state. When the top cover 2 is placed, the insertion block 22 at the bottom of the top cover 2 is snapped into the groove 42 on the pressing block 4. During the placement of the top cover 2, the two pressing blocks 4 are pressed tightly against the inner wall of the corresponding drainage ditch body 1, thereby making the filter screen 3 open and taut, which enhances the installation stability of the filter screen 3.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A drainage channel for hydraulic engineering, characterized by: The system includes a drainage ditch body and a top cover. The upper part of the inner walls on the left and right sides of the drainage ditch body is provided with support edges. A filter screen is provided between the upper side walls of the two support edges. A strip-shaped pressing block is provided on the upper side of the filter screen corresponding to the support edge. The upper opening of the drainage ditch body is covered with a top cover with multiple strip holes, and the top cover is pressed between the upper side walls of the two pressing blocks.
2. The drainage channel for hydraulic engineering according to claim 1, characterized in that: Limiting strips are fixed to the upper side of both sides of the filter screen, and limiting grooves are opened on the bottom side of the pressing block at the corresponding limiting strips, with the limiting strips snapping into the limiting grooves.
3. The drainage channel for hydraulic engineering according to claim 1, characterized in that: Multiple grooves are provided on the opposite side of the two pressing blocks, and plug blocks are fixed downward at the corresponding grooves on the bottom of the top cover. The plug blocks are inserted into the corresponding grooves.
4. The drainage channel for hydraulic engineering according to claim 1, characterized in that: The groove width is greater than the plug-in block width, and the side of the plug-in block facing the pressing block abuts against the inner wall of the groove.
5. The drainage channel for hydraulic engineering according to claim 1, characterized in that: Each support has multiple reinforcing ribs along its bottom side and between the inner wall of the corresponding drainage channel body.
6. The drainage channel for hydraulic engineering according to claim 5, characterized in that: The drainage ditch body, supporting edges, and reinforcing ribs are cast as a single piece of reinforced concrete.