Road gutter inlet structure
By introducing a dual filtration structure of cylindrical screen and bottom plate screen, as well as a backwash channel, into the road storm drain structure, the problem of easy clogging of the filtration structure under the grating plate is solved, achieving effective rainwater filtration and rapid drainage, and reducing the risk of urban flooding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2026-03-03
AI Technical Summary
In existing road storm drain structures, the filter structure below the grating plate is easily clogged, resulting in loss of filtration effect, reduced drainage speed, and consequently, flooding problems.
Design a road storm drain structure including a rectangular grid plate, a filter barrel assembly, and a fixing bolt. The filter barrel assembly consists of a cylindrical screen and a bottom plate screen. The filter barrel assembly performs dual filtration through the multi-layer screen structure of the cylindrical screen and the bottom plate screen, and removes blockages and impurities through a backflushing channel. The filter barrel assembly can rotate to respond to the inflow of rainwater at the optimal angle, and the fixing bolt restricts the rotation to fix the angle.
It effectively filters rainwater, prevents impurities from accumulating in drainage pipes, improves drainage speed, reduces the risk of flooding, and the structural design also optimizes filtration effect and size.
Smart Images
Figure CN223963990U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to road drainage structures, and in particular to a road rainwater inlet structure. Background Technology
[0002] Road storm drain structures typically refer to facilities in urban road drainage systems used to collect and guide rainwater from the road surface into drainage pipes. They include several key components such as storm drains, manhole covers, inlets, and connecting pipes. The primary function of road storm drains is to prevent rainwater accumulation on the road surface, thereby avoiding traffic obstruction and urban flooding. The design and maintenance of road storm drain structures are crucial for urban flood control and drainage systems. Improper design or poor maintenance of storm drain structures can lead to poor drainage, resulting in road flooding, traffic congestion, and even urban flooding. Therefore, urban planning and municipal engineering place particular emphasis on the design and management of road storm drains.
[0003] The problem of waterlogging has two aspects. First, debris inside the storm drains clogs the area above the grating, weakening water collection and leading to waterlogging. Second, rainwater entering the storm drains still contains debris, which accumulates in the drainage pipes and eventually clogs weak points, resulting in waterlogging. Currently, the filter structure installed below the grating is easily clogged, losing its filtering effect and reducing the drainage speed, thus causing waterlogging. Utility Model Content
[0004] The main purpose of this utility model is to provide a road storm drain structure that solves the problem that the filter structure set under the grating plate is easily blocked, loses its filtering effect, and causes waterlogging due to reduced drainage speed after blockage.
[0005] To achieve the above objectives, this utility model provides a road storm drain structure, comprising:
[0006] A rectangular grid plate with filter areas distributed on its plane, and hinge seats provided on the side of the grid plate;
[0007] A filter assembly includes a cylindrical screen, a bottom screen, and a mounting frame. The upper end of the cylindrical screen is flat, while the lower end is inclined at 30 to 50 degrees. The cylindrical screen has a first screen structure formed by multiple first screen holes on its peripheral wall. The bottom screen has a second screen structure formed by multiple second screen holes. A backwash channel is connected between the upper end of the second screen hole at the lower position and the lower end of the adjacent second screen hole at the upper position. The mounting frame is located in the middle of the cylindrical screen and connected to the upper end of the cylindrical screen. The mounting frame is hinged to the middle of the grid plate, and the upper end of the cylindrical screen is in contact with the surface of the grid plate.
[0008] A fixing bolt is connected to the grid plate and is disposed at the upper end of the cylindrical screen. When the fixing bolt is engaged with the cylindrical screen, it restricts the rotation of the filter barrel assembly.
[0009] Furthermore, the peripheral wall of the cylindrical sieve forms an acute angle with the vertical direction.
[0010] Furthermore, the filtration area is rectangular in shape, and the area outside the cylindrical screen is an unused area. The road rainwater inlet structure also includes a filter screen, which covers the unused area.
[0011] Furthermore, the filter screen is disposed on the lower surface of the grid plate.
[0012] Furthermore, the fixing bolt passes through and forms a threaded connection with the grating plate.
[0013] Furthermore, the upper surface of the cylindrical screen is provided with a plurality of fixing holes corresponding to the lower end of the fixing bolt in the circumferential direction.
[0014] Furthermore, the backflush channel has a downward tilt angle of 30 to 45 degrees.
[0015] Furthermore, the bottom plate screen is made of polymer material.
[0016] Furthermore, the bottom plate screen and the cylindrical screen are detachably connected.
[0017] Furthermore, when the fixing bolt is installed on the grating plate, the upper end of the fixing bolt is recessed into the upper surface of the grating plate.
[0018] The road storm drain structure provided by this utility model allows rainwater to enter the filter barrel assembly from the filtration area of the grating plate. The rainwater then undergoes further filtration through the cylindrical screen and the bottom plate screen, preventing the gradual accumulation of impurities in the drainage pipe. Part of the water flows through the backwash channel to the front end of the second screen hole at the lower position, where impurities blocked at the front end of the second screen hole are partially wetted, loosened, or flushed down. After the road storm drain structure is installed, the rotation of the filter barrel assembly allows the bottom plate screen to handle the rainwater entering from the grating plate at the optimal angle. The filter barrel assembly also provides a basis for increasing the structural dimensions of the filter barrel assembly. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the road storm drain structure of the first embodiment of this utility model (the filter bucket assembly is in a state that facilitates the flipping of the grating plate).
[0020] Figure 2 This is a schematic diagram of the grating plate in the road storm drain structure of the first embodiment of this utility model;
[0021] Figure 3 This is a schematic diagram of the road rainwater inlet structure of the first embodiment of this utility model (the filter bucket assembly is in a state that facilitates filtration).
[0022] Figure 4 This is a schematic diagram of the filter bucket assembly in the road rainwater inlet structure of the first embodiment of this utility model;
[0023] Figure 5 This is a schematic diagram of the bottom plate screen in the road rainwater inlet structure of the first embodiment of this utility model;
[0024] Figure 6 yes Figure 5 A partial schematic diagram;
[0025] Figure 7 This is a schematic diagram of the second screen hole and the backwash channel in the road rainwater inlet structure of the first embodiment of this utility model.
[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0027] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0028] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” “the,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.
[0029] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.
[0030] Reference Figures 1 to 7 In one embodiment of this utility model, a road drainage inlet structure includes:
[0031] A rectangular grid plate 100 has filter areas 110 distributed on its plane, and a hinge seat 120 is provided on the side of the grid plate 100.
[0032] The filter assembly 200 includes a cylindrical screen 210, a bottom screen 220, and a mounting bracket 230. The upper end of the cylindrical screen 210 is flat, while the lower end is inclined at 30 to 50 degrees. The cylindrical screen 210 has a first screen structure formed by multiple first screen holes 211 on its peripheral wall. The bottom screen 220 has a second screen structure formed by multiple second screen holes 221 on its upper surface. A backwash channel 222 is connected between the upper end of the second screen hole 221 in the lower position and the lower end of the adjacent second screen hole 221 in the upper position. The mounting bracket 230 is located in the middle of the cylindrical screen 210 and connected to the upper end of the cylindrical screen 210. The mounting bracket 230 is hinged to the middle of the grid plate 100, and the upper end of the cylindrical screen 210 is in contact with the surface of the grid plate 100.
[0033] A fixing bolt 300 is connected to the grid plate 100 and is disposed at the upper end of the cylindrical screen 210. When the fixing bolt 300 is combined with the cylindrical screen 210, it restricts the rotation of the filter barrel assembly 200.
[0034] Road storm drain structures typically refer to facilities in urban road drainage systems used to collect and guide rainwater from the road surface into drainage pipes. They include several key components such as storm drains, manhole covers, inlets, and connecting pipes. The primary function of road storm drains is to prevent rainwater accumulation on the road surface, thereby avoiding traffic obstruction and urban flooding. The design and maintenance of road storm drain structures are crucial for urban flood control and drainage systems. Improper design or poor maintenance of storm drain structures can lead to poor drainage, resulting in road flooding, traffic congestion, and even urban flooding. Therefore, urban planning and municipal engineering place particular emphasis on the design and management of road storm drains.
[0035] The problem of waterlogging has two aspects. First, debris inside the storm drains clogs the area above the grating, weakening water collection and leading to waterlogging. Second, rainwater entering the storm drains still contains debris, which accumulates in the drainage pipes and eventually clogs weak points, resulting in waterlogging. Currently, the filter structure installed below the grating is easily clogged, losing its filtering effect and reducing the drainage speed, thus causing waterlogging.
[0036] The road drainage inlet structure provided by this utility model includes a grating plate 100, a filter bucket assembly 200, and a fixing bolt 300.
[0037] The rectangular grating 100 has filter zones 110 distributed on its surface, which not only provide filtration but also form support. A hinge seat 120 is provided on the side of the grating 100, directly limiting the connection between the grating 100 and the external fixing method to a hinged manner, thus ensuring the installation effect of the grating 100.
[0038] The filter assembly 200 includes a cylindrical screen 210, a bottom screen 220, and a mounting bracket 230. The upper end of the cylindrical screen 210 is flat, while the lower end has a 30-50 degree slope, providing a foundation for the installation of the bottom screen 220. The cylindrical screen 210 has a first screen structure formed by multiple first screen holes 211 on its peripheral wall; the arrangement and diameter of the first screen holes 211 are not limited to being uniform. The bottom screen 220 has a second screen structure formed by multiple second screen holes 221 on its upper surface; the arrangement and diameter of the second screen holes 221 are also not limited to being uniform. After rainwater enters the filter assembly 200 from the filtration zone 110 of the grille plate 100, it can be filtered again by the cylindrical screen 210 and the bottom screen 220, thereby preventing the gradual accumulation of impurities in the drainage pipe. A backflushing channel 222 connects the upper end of the second screen hole 221 in the lower position to the lower end of the adjacent second screen hole 221 in the upper position. The distribution of the backflushing channel 222 on the entire bottom plate screen 220 is designed and processed according to the arrangement of the second screen holes 221. During operation, water flows in from the upper end of the second screen hole 221 in the upper position and flows towards the lower end of the second screen hole 221. Some water flows out from the lower end of the second screen hole 221, and some water flows through the backflushing channel 222 to the front end of the second screen hole 221 in the lower position. During this process, impurities blocked at the front end of the second screen hole 221 in the lower position are wetted, loosened, or washed down to a certain extent. The bottom plate screen 220 can be made of metal or polymer. The preferred processing method for the second screen hole 221 and the backflushing channel 222 is laser processing. It should be noted that the thickness of the bottom plate screen 220 can be set slightly larger to provide a dimensional basis for the processing of the backflushing channel 222. Mounting bracket 230 is positioned in the middle of cylindrical screen 210 and connected to its upper end. Mounting bracket 230 is hinged to the middle of grating plate 100, allowing the entire filter assembly 200 to rotate. After the road drainage inlet structure is installed, the rotation of filter assembly 200 allows the bottom screen 220 to receive rainwater entering from grating plate 100 at the optimal angle. Specifically, the bottom screen 220 should be angled downwards to receive the water flow, thus achieving the most efficient filtration. The rotation of filter assembly 200 not only optimizes the filtration effect but also improves its structural dimensions. After rotating filter assembly 200 to a suitable installation angle (fully utilizing the sloping shape at the lower end of cylindrical screen 210), grating plate 100 is lowered or raised onto an external fixed foundation. The hinged structure of filter assembly 200 on grating plate 100 is not limited and can be based on existing technologies. The upper end of the cylindrical sieve 210 is in contact with the surface of the grid plate 100 to prevent leakage.
[0039] The fixing bolt 300 is connected to the grid plate 100 and is positioned at the upper end of the cylindrical screen 210. When the fixing bolt 300 is engaged with the cylindrical screen 210, it restricts the rotation of the filter barrel assembly 200, thus fixing the orientation of the bottom screen 220 to receive the water flow at the optimal angle. The fixing bolt 300 can have various structural forms, such as a pin or a bolt.
[0040] In summary, after rainwater enters the filter assembly 200 from the filtration zone 110 of the grating plate 100, it can be filtered again through the cylindrical screen 210 and the bottom screen 220, thus preventing impurities from gradually accumulating in the drainage pipe. Some water flows through the backwash channel 222 to the front end of the second screen hole 221 at the lower position, where impurities blocked at the front end of the second screen hole 221 at the lower position are moistened, loosened, or washed down to a certain extent. After the road rainwater inlet structure is installed in place, the rotation of the filter assembly 200 allows the bottom screen 220 to handle the rainwater entering from the grating plate 100 at the optimal angle. The filter assembly 200 also provides a basis for increasing the structural dimensions of the filter assembly 200.
[0041] In one embodiment, the peripheral wall of the cylindrical sieve 210 forms an acute angle with the vertical direction.
[0042] In this embodiment, the peripheral wall of the cylindrical sieve 210 is at an angle of 80 to 88 degrees to the vertical direction, so that impurities adhering to the inner wall of the cylindrical sieve 210 are more likely to fall off, thereby facilitating the improvement of filtration effect.
[0043] Reference Figure 2 In one embodiment, the filtration zone 110 is generally rectangular, and the area outside the cylindrical screen 210 is an unused area. The road rainwater inlet structure also includes a filter screen 400, which covers the unused area.
[0044] In this embodiment, the overall rectangular shape of the filtration zone 110 minimizes processing difficulty and maximizes the filtration range for rainwater. However, this also means that the filter canister assembly 200 cannot completely cover the filtration zone 110. A filter screen 400 is introduced to prevent impurities from flowing below the grid plate 100. The filter screen 400 can be positioned on either the upper or lower surface of the grid plate 100, and its connection method can include bolting.
[0045] Reference Figure 2 In one embodiment, the filter screen 400 is disposed on the lower surface of the grid plate 100.
[0046] In this embodiment, the filter screen 400 is installed on the lower surface of the grid plate 100 to ensure the cleanliness of the upper surface of the grid plate 100. The filter screen 400 can be installed on the lower surface of the grid plate 100 by welding or bolting.
[0047] In one embodiment, the fixing bolt 300 passes through and forms a threaded connection with the grid plate 100.
[0048] In this embodiment, the fixing bolt 300 is a bolt. During the installation process, the fixing bolt 300 forms a threaded connection with the grid plate 100 and restricts the rotation of the filter barrel assembly 200. The setting of the fixing bolt 300 as a bolt is stable and reliable.
[0049] In one embodiment, the upper surface of the cylindrical screen 210 is provided with a plurality of fixing holes corresponding to the lower end of the fixing bolt 300 in the circumferential direction.
[0050] In this embodiment, the introduction of fixing holes improves the rotational restriction of the filter canister assembly 200 by the fixing bolt 300. The number of fixing holes can vary, such as 8 or 16 circumferentially evenly restricting rotation.
[0051] In one embodiment, the backflow channel 222 has a downward tilt angle of 30 to 45 degrees.
[0052] In this embodiment, the downward inclination angle of the backwash channel 222 is actually limited by the downward inclination angle of the bottom plate screen 220 and the vertical spacing of the second screen hole 221. The backwash channel 222 has a downward inclination angle of 30 to 45 degrees, which can form a better backwash effect.
[0053] In one embodiment, the bottom plate screen 220 is made of polymer material.
[0054] In this embodiment, the material of the bottom plate screen 220 is limited to polymer, thereby greatly reducing the difficulty of processing the backflushing channel 222.
[0055] In one embodiment, the bottom plate screen 220 and the cylindrical screen 210 are detachably connected.
[0056] In this embodiment, the detachable design facilitates the installation and maintenance of the bottom plate screen 220. The bottom plate screen 220 can be fixed by bolts, snap-fit, or fasteners.
[0057] In one embodiment, when the fixing bolt 300 is installed on the grid plate 100, the upper end of the fixing bolt 300 is recessed into the upper surface of the grid plate 100.
[0058] In this embodiment, the sinking setting after the fixing bolt 300 is installed ensures that there are no safety hazards during the use of the road storm drain structure.
[0059] In summary, the road rainwater inlet structure provided by this utility model allows rainwater to enter the filter barrel assembly 200 from the filtration zone 110 of the grating plate 100. The rainwater can then undergo further filtration through the cylindrical screen 210 and the bottom plate screen 220, thus preventing the gradual accumulation of impurities in the drainage pipe. Part of the water flows through the backwash channel 222 to the front end of the second screen hole 221 at the lower position, where impurities blocked at the front end of the second screen hole 221 are moistened, loosened, or flushed down to a certain extent. After the road rainwater inlet structure is installed, the rotation of the filter barrel assembly 200 allows the bottom plate screen 220 to handle the rainwater entering from the grating plate 100 at the optimal angle. The filter barrel assembly 200 also provides a basis for increasing the structural dimensions of the filter barrel assembly 200.
[0060] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. A road storm drain structure, characterized in that, include: A rectangular grid plate (100) has filter areas (110) distributed on its plane, and a hinge seat (120) is provided on the side of the grid plate (100). The filter assembly (200) includes a cylindrical screen (210), a bottom plate screen (220), and a mounting bracket (230). The upper end of the cylindrical screen (210) is flat, while the lower end is inclined at 30 to 50 degrees. The cylindrical screen (210) has a first screen structure formed by multiple first screen holes (211) on its peripheral wall. The bottom plate screen (220) has a second screen structure formed by multiple second screen holes (221) on its upper surface. The lower position... A backwash channel (222) is connected between the upper end of the second sieve hole (221) and the lower end of the adjacent second sieve hole (221) at the upper position. The mounting bracket (230) is disposed in the middle of the cylindrical sieve (210) and connected to the upper end of the cylindrical sieve (210). The mounting bracket (230) is hinged to the middle of the grid plate (100). The upper end of the cylindrical sieve (210) is in contact with the surface of the grid plate (100). A fixing bolt (300) is connected to the grid plate (100) and is disposed at the upper end of the cylindrical screen (210). When the fixing bolt (300) is combined with the cylindrical screen (210), it restricts the rotation of the filter barrel assembly (200).
2. The road drainage inlet structure according to claim 1, characterized in that, The peripheral wall of the cylindrical sieve (210) forms an acute angle with the vertical direction.
3. The road drainage inlet structure according to claim 1, characterized in that, The filtration zone (110) is rectangular in shape. The area outside the cylindrical screen (210) is an unused area. The road rainwater inlet structure also includes a filter screen (400), which covers the unused area.
4. The road drainage inlet structure according to claim 3, characterized in that, The filter screen (400) is disposed on the lower surface of the grid plate (100).
5. The road drainage inlet structure according to claim 1, characterized in that, The fixing bolt (300) passes through and forms a threaded connection with the grid plate (100).
6. The road storm drain structure according to any one of claims 1 to 5, characterized in that, The upper surface of the cylindrical sieve (210) is provided with a plurality of fixing holes corresponding to the lower end of the fixing bolt (300) in the circumferential direction.
7. The road storm drain structure according to any one of claims 1 to 5, characterized in that, The backflush channel (222) has a downward tilt angle of 30 to 45 degrees.
8. The road storm drain structure according to any one of claims 1 to 5, characterized in that, The bottom plate screen (220) is made of polymer material.
9. The road storm drain structure according to any one of claims 1 to 5, characterized in that, The bottom plate screen (220) and the cylindrical screen (210) are detachably connected.
10. The road storm drain structure according to any one of claims 1 to 5, characterized in that, When the fixing bolt (300) is installed on the grid plate (100), the upper end of the fixing bolt (300) is recessed into the upper surface of the grid plate (100).