Anti-blocking drain board for inspection well
By designing an anti-clogging drainage plate, adopting a frustum shell structure and inclined water inlet holes, the problem of manhole covers being blocked by leaves and other debris was solved, achieving a blockage-free drainage effect.
Patent Information
- Application Number
- CN202520854152.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-30
AI Technical Summary
Manhole covers are easily clogged by leaves and other debris, a problem that is difficult to solve effectively with existing technology.
Design an anti-clogging drainage board with a frustum shell structure. Multiple inclined water inlets are provided on the side and top surfaces. The side and top surfaces form an angle greater than 90 degrees. The side water inlets are at an angle of 60°±5% to the top surface. The top water inlets are vertical. The lower part of the side has a flange structure to form a base. The inclined side allows debris to flow into the well with the water. When the water rises, drainage continues.
It effectively prevents manhole blockage, minimizes traffic disruption, and resolves debris blockage issues without external force or power, ensuring smooth drainage.
Smart Images

Figure CN223867386U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of inspection well construction technology, and in particular to an anti-clogging drainage board for inspection wells. Background Technology
[0002] Inspection wells are a type of municipal installation widely used on various roads.
[0003] Existing inspection wells typically have a cover with a water inlet at the top opening, which can block large debris such as fallen leaves while allowing water to enter.
[0004] In actual use, existing inspection wells often become clogged with leaves and other debris. The main reason is that leaves and other debris lie flat in rainwater, and the existing covers are also horizontally set. When the leaves and other debris flow with the water, they will cover the water inlet of the cover and block the water inlet.
[0005] In the existing technology, there is another type of roadside stone drainage board, whose water inlet holes are multiple vertically extending long holes. However, in actual use, debris such as leaves often accumulate at the water inlet holes and block them.
[0006] Therefore, how to solve the problem of manhole covers being easily blocked by leaves and other debris has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0007] In view of the above-mentioned defects of the prior art, the present invention provides an anti-clogging drainage plate for inspection wells, the purpose of which is to solve the problem that inspection well covers are easily blocked by leaves and other debris.
[0008] To achieve the above objectives, this utility model discloses an anti-clogging drainage plate for manholes, which is installed at the opening of the roadside manhole located on the road surface. The anti-clogging drainage plate is a frustum shell structure with one side and one bottom surface removed, or a frustum shell structure with only the bottom surface removed. Both include a top surface and three or more sides that form an angle greater than 90 degrees with the top surface.
[0009] Each of the sides and the top surface of the anti-clogging drainage plate is provided with multiple water inlet holes;
[0010] The axial direction of each of the water inlets located on the side is at a 60° angle to the side on which it is located. ° An angle of ±5%, and an angle of 30°±5% with the top surface;
[0011] The axial direction of each of the water inlets located on the top surface is perpendicular to the top surface;
[0012] For the anti-clogging drainage board with one side removed, the removed side is perpendicular to the top surface and is set close to the side stone that is higher than the road surface.
[0013] Preferably, the plurality of water inlets on each of the side surfaces and the top surface are arranged in a rectangular array.
[0014] Preferably, each of the water inlets is an elongated hole, and its length direction is parallel to the length direction of the side surface or the top surface.
[0015] Preferably, each of the sides has an outwardly folded flange structure at its lower edge that is parallel to the top surface; all the flange structures are joined together to form a base.
[0016] Preferably, the frustum shell structure is a quadrangular frustum shell structure.
[0017] The beneficial effects of this utility model are:
[0018] This invention makes manholes less prone to clogging, and the sloping sides have minimal impact on traffic and pedestrians. It solves the problem of manhole covers being easily blocked by leaves and other debris without the need for external force or power.
[0019] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description
[0020] Figure 1 A schematic diagram of an embodiment of the present invention is shown.
[0021] Figure 2 This diagram shows a structural schematic of an embodiment of the present invention with one side of the anti-clogging drainage plate removed.
[0022] Figure 3 This utility model is shown Figure 2 Schematic diagram of the cross-sectional structure along the AA direction.
[0023] Figure 4 This utility model is shown Figure 2 Schematic diagram of the cross-sectional structure along the BB direction.
[0024] Figure 5 This utility model is shown Figure 2 Schematic diagram of the cross-sectional structure along the CC direction.
[0025] Figure 6 This utility model is shown Figure 2 A schematic diagram of the structure from the right-side view.
[0026] Figure 7 This utility model is shown Figure 2 A schematic diagram of the structure in the left-view direction. Detailed Implementation
[0027] Example 1: As Figure 1 As shown in the figure, the anti-clogging drainage plate for the inspection well is installed at the opening of the roadside inspection well located on the road surface. The anti-clogging drainage plate is a frustum shell structure with one side 1 and the bottom surface removed, or a frustum shell structure with only the bottom surface removed. Both include a top surface 2 and three or more side surfaces 1 that are at an angle greater than 90 degrees to the top surface 2.
[0028] Each side 1 and top surface 2 of the anti-clogging drainage board is provided with multiple water inlet holes 3;
[0029] The axial direction of each water inlet 3 located on side 1 is at a 60° angle to the side 1 on which it is located. ° The included angle is ±5%, and the included angle with the top surface 2 is 30°±5%.
[0030] The axial direction of each water inlet hole 3 located on the top surface 2 is perpendicular to the top surface 2;
[0031] For a clog-resistant drainage board with one side 1 removed, the removed side 1 is perpendicular to the top surface 2 and is set close to the curbstone that is higher than the road surface.
[0032] This utility model includes a top surface 2 that is higher than the road surface, and a side surface 1 that forms an angle greater than 90 degrees with the top surface 2. The top surface 2 and each side surface 1 are provided with water inlet holes 3. When leaves and other debris flow in with the water, the water will flow down into the well through the water inlet holes 3 of the side surface 1. The well is equipped with a collection basket as is the case (as is the case now), so that leaves and other debris will not block the water inlet holes 3.
[0033] Moreover, once the water inlet 3 on the side 1 is blocked, the water level will gradually rise. After reaching the height of the top surface 2, water can continue to enter. The water that overflows to the top is mainly water, while leaves and other things will accumulate on the sloping side 1.
[0034] The sloping side 1 does not affect traffic.
[0035] In actual use, leaves and other objects lying flat can easily enter and are not likely to block the water inlet 3. There is also a collection basket inside the well. If the water inlet 3 on the side 1 is blocked, debris will accumulate on the side 1. When water overflows to the top 2, it will enter from the top 2.
[0036] The axial direction of each water inlet 3 located on side 1 is at a 60° angle to the side 1 on which it is located. ° The ±5% angle, and the 30°±5% angle with the top surface 2, form a horizontally slightly downward structure that facilitates the flow of water through the drain hole into the well, making it less likely to cause blockage. The leaves and other debris that enter are collected and disposed of through the net basket inside the well.
[0037] The frustum shell structure places the top surface 2 slightly higher than the side surface 1. Each water inlet 3 on the top surface 2 is higher than each water inlet 3 on the side surface 1. Even if the water inlet 3 on the side surface 1 is blocked, leaves and other debris will naturally accumulate on the lower side surface. When the water level rises to the top surface 2, the drain hole 3 on the top surface 2 can continue to drain smoothly.
[0038] In some embodiments, the plurality of water inlets 3 on each side 1 and each top surface 2 are arranged in a rectangular array.
[0039] In some embodiments, each water inlet 3 is an elongated hole, and its length direction is parallel to the length direction of the side surface 1 or the top surface 2.
[0040] In practical applications, using a long hole as the water inlet 3 can increase the water inlet range and the water inlet speed.
[0041] In some embodiments, each side 1 has an outwardly folded flange structure 4 at its lower edge that is parallel to the top surface 2; all flange structures 4 are joined together to form a base.
[0042] In some embodiments, the frustum shell structure is a quadrangular frustum shell structure.
[0043] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A clog-resistant drainage plate for inspection wells, installed at the opening of the roadside inspection well located on the road surface; characterized in that, The anti-clogging drainage board is a frustum shell structure with one side (1) and the bottom surface removed, or a frustum shell structure with only the bottom surface removed, both of which include a top surface (2) and three or more side surfaces (1) that are at an angle greater than 90 degrees to the top surface (2). Each of the sides (1) and the top surface (2) of the anti-clogging drainage plate is provided with a plurality of water inlet holes (3); The axial direction of each of the water inlets (3) located on the side (1) is at a 60° angle to the side (1) where it is located. ° The included angle is ±5%, and the included angle with the top surface (2) is 30°±5%. The axial direction of each of the water inlets (3) located on the top surface (2) is perpendicular to the top surface (2); For the anti-clogging drainage board with one of the sides (1) removed, the removed side (1) is perpendicular to the top surface (2) and is set close to the side stone above the road surface.
2. The anti-clogging drainage plate for inspection wells according to claim 1, characterized in that, The plurality of water inlets (3) on each of the side surfaces (1) and the top surface (2) are arranged in a rectangular array.
3. The anti-clogging drainage plate for inspection wells according to claim 1, characterized in that, Each of the water inlet holes (3) is an elongated hole, and its length direction is parallel to the length direction of the side surface (1) or the top surface (2) where it is located.
4. The anti-clogging drainage plate for inspection wells according to claim 1, characterized in that, Each of the side surfaces (1) has an outwardly folded flange structure (4) at its lower edge that is parallel to the top surface (2); all the flange structures (4) are joined together to form a base.
5. The anti-clogging drainage plate for inspection wells according to claim 1, characterized in that, The frustum shell structure is a quadrangular frustum shell structure.