A gutter with slanted flow guide slots

Abstract

The utility model discloses a kind of drainage channels with oblique flow guide slit, it is related to road engineering and urban infrastructure technical field, including drainage channel and the water flow tank hole being set to the inside of drainage channel;The drainage channel includes tank bottom, first flow guide part and second flow guide part, the tank bottom, the first flow guide part and the second flow guide part are integrally formed, the top of the first flow guide part is equipped with arc flow guide surface;The top of the second flow guide part is equipped with oblique flow guide surface;Water inlet is formed between the arc flow guide surface and the oblique flow guide surface;The utility model is improved to oblique downward slit-shaped opening by water inlet, forms vacuum high viscous flow guide surface.This structure can use the momentum of water flow itself and the negative pressure effect generated locally, strongly adsorbs surface water flow, significantly increases effective water inlet and exhaust capacity, so that water flow can be quickly, smoothly guided into tank, fundamentally reduces the phenomenon that water flow flows over water inlet, and water collection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of road engineering and urban infrastructure technology, and in particular to an oval-shaped drainage ditch for drainage in scenarios such as roads, squares, parks, and parking lots. Background Technology

[0002] Oval-shaped drainage ditches are widely used drainage facilities in roads, squares, and parking lots. Their core features are twofold: First, their drainage cross-section is oval with the larger end facing upwards. This shape results in a smaller cross-sectional area at the bottom of the ditch, increasing water flow velocity, enhancing drainage efficiency, and reducing sediment buildup at the bottom. Second, their top inlet is a narrow, elongated slit-like opening located along the central axis of the oval shape. This design significantly reduces the exposed portion of the drainage ditch, saving space and improving the aesthetics of the site.

[0003] Despite the advantages mentioned above, existing narrow, elongated, slit-shaped oval grooves have the following significant drawbacks in practical applications:

[0004] First, the water intake efficiency is low. Because the inlet is a narrow slit, its effective water intake cross-section and air exhaust cross-section are both small. As a result, at a large flow rate, some water cannot enter the tank in time, thus bypassing the opening and forming "overflow", which reduces the water collection efficiency.

[0005] Secondly, it has poor self-cleaning ability and its inner walls are easily contaminated. When water flows into the trough from the vertical opening along the central axis, the impact point is mainly concentrated near the lowest point of the oval trough due to gravity. The large drop height causes water to splash, allowing contaminants to adhere to the inner wall of the water channel opening. After long-term operation, impurities will accumulate on the inner wall, which is difficult to remove by the water flow itself, affecting hygiene and flow capacity.

[0006] To address the cleaning challenges, existing technologies, such as Chinese patent document CN111561036A, propose a self-pressurized oval-shaped drainage channel structure for impurity removal. This structure uses a complex mechanism, including a pressure booster wheel and a lifting basket, added to the bottom of the opening to impact and clean the inner wall. However, this solution introduces additional moving parts, leading to complex manufacturing processes, increased operational failure rates, and ultimately, higher overall costs.

[0007] Secondly, the inlet is prone to clogging. When the narrow, slit-like opening receives water containing floating debris such as fallen leaves, the debris can easily become stuck and accumulate in the slit, causing blockage of the inlet and affecting the normal operation of the drainage system.

[0008] In addition, in the field of storm drain grates, existing technologies (such as CN202210420454.9 and CN217175161U) have solved the problems of preventing overflow and resisting siltation by setting up a flow guiding slope structure, which provides useful technical inspiration for the structural improvement of oval-shaped channel drainage ditches.

[0009] Therefore, the existing oval-shaped drainage ditch still needs improvement in terms of water collection efficiency, self-cleaning ability and anti-clogging performance. There is an urgent need for a new type of drainage ditch structure that is simple in structure, requires no additional power, and can comprehensively improve the above problems. Utility Model Content

[0010] This invention provides a drainage trough with oblique guide slots, which solves the technical problems of poor water collection efficiency, self-cleaning ability and anti-clogging performance of existing oval-shaped drainage ditches.

[0011] To solve the above-mentioned technical problems, this utility model provides a drainage channel with an oblique guide slit, comprising a drainage channel, the drainage channel including an integrally formed channel bottom, a first guide part and a second guide part, the inner sides of the channel bottom, the first guide part and the second guide part forming a water flow channel hole for drainage, the top of the first guide part being provided with an arc-shaped guide surface; the side of the second guide part being provided with an oblique guide surface; and an inlet being formed between the arc-shaped guide surface and the oblique guide surface.

[0012] Preferably, one side of the first guide section is provided with a first support flange for support, the first end of the arc-shaped guide surface is connected to the first support flange, and the end of the arc-shaped guide surface is located at the top of the water channel hole.

[0013] Preferably, a second support flange for support is provided on one side of the second guide portion, the first end of the top surface of the second guide portion is connected to the top of the second support flange, the first end of the inclined guide surface is connected to the end of the top surface of the second guide portion, and the end of the inclined guide surface is located at the top of the water channel hole.

[0014] Preferably, the top surface of the second guide portion is obliquely downward from the first end to the last end, and the angle between the top surface of the second guide portion and the horizontal line is 2°.

[0015] Preferably, the height of the first guide portion is greater than the height of the second guide portion.

[0016] Preferably, the top of the inlet is provided with a concrete rib for widening the inlet.

[0017] Preferably, the top of the water inlet is covered with a steel grating structure.

[0018] Preferably, the steel grating structure includes reinforcing bars and reinforcing ribs, the reinforcing bars are welded to the reinforcing ribs, and the two ends of the reinforcing ribs are respectively disposed at the top of the first guide portion and the second guide portion.

[0019] Preferably, the cross-section of the water channel hole is an oval shape with the larger end facing upwards and the opening is present.

[0020] Preferably, the cross-section of the water channel hole is a circle with the larger end facing upwards and the opening is present.

[0021] Compared with related technologies, the drainage channel with inclined guide slits provided by this utility model has the following beneficial effects:

[0022] This invention provides a drainage channel with an oblique guide slit. By modifying the inlet into a downward-sloping slit-like opening composed of an arc-shaped guide surface and an oblique guide surface, a vacuum high-viscosity guide surface is formed. This structure can utilize the momentum of the water flow itself and the locally generated negative pressure effect to strongly adsorb surface water flow, significantly increasing the effective water intake and air exhaust capacity. This allows water flow to be quickly and smoothly guided into the drainage channel hole, fundamentally reducing the phenomenon of water flowing out of the inlet and greatly improving water collection efficiency.

[0023] This invention guides water flow at a specific angle to impact the upper part of the sidewall of the water channel hole through the guide surface, changing the traditional design where water flows straight to the bottom. This design, combined with the unique cross-sectional shape of the water channel hole, creates a turbine-like circulation of water within its cross-section. This circulation acts like a natural "brush," continuously and effectively flushing and cleaning the entire inner wall of the water channel hole, preventing the adhesion and deposition of contaminants, and achieving automatic cleaning without the need for external power or complex mechanical structures.

[0024] This invention achieves its functional enhancement entirely through innovative structural design, eliminating the need for additional moving parts such as pressure rollers and lifting baskets as required by existing technologies. Therefore, the overall structure is simpler and more robust, easier to manufacture, and has a lower overall cost. Furthermore, it exhibits an extremely low failure rate and requires minimal maintenance during long-term operation, resulting in significantly enhanced reliability.

[0025] In this invention, the downward-sloping guide surface gives the incoming water a clear flow direction that is generally forward and slightly downward. This directional water flow generates a dual force of pushing forward and buoying floating objects such as fallen leaves, which can push the floating objects away from the inlet area, making them less likely to accumulate and get stuck in the gaps, thereby effectively preventing the inlet from becoming clogged and ensuring the smooth flow of the drainage system.

[0026] By adding a steel grating or concrete rib structure, this utility model can flexibly widen the physical width of the inlet without changing the core flow guiding principle, further adapting to usage scenarios with large flow drainage or different load-bearing requirements, and expanding the application range of the product. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the cross-section of the drainage ditch of this utility model;

[0028] Figure 2 This is a three-dimensional structural diagram of the drainage ditch of this utility model;

[0029] Figure 3 This is a schematic diagram of the cross-section of the steel grating in this utility model;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the steel grating of this utility model.

[0031] Figure 5 This is a top view schematic diagram of the steel grating structure of this utility model;

[0032] Figure 6 This is a schematic diagram of the three-dimensional structure with concrete ribs according to this utility model.

[0033] Figure 7 This is a schematic diagram of the structure of Embodiment 4 of this utility model.

[0034] Labels in the diagram: 1. Drainage channel; 2. Water channel hole; 3. Inlet; 4. Reinforcing rib; 5. Reinforcing bar; 6. Concrete rib; 2'. Slotted pipe; 11. Channel bottom; 12. First guide section; 13. Second guide section; 121. Arc-shaped guide surface; 122. First support flange; 131. Sloping guide surface; 132. Second support flange. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 scope of protection of the present utility model.

[0036] The core of this invention lies in improving the top inlet 3 of the traditional drainage structure. The original vertical opening is replaced with a downward-sloping slit-shaped inlet 3 composed of an arc-shaped guide surface 121 and an oblique guide surface 131, thus forming a vacuum high-viscosity guide surface. This structure utilizes fluid mechanics principles. On the one hand, it enhances the adsorption force on surface water flow by creating local negative pressure, improving water collection efficiency and preventing overflow. On the other hand, it guides the water flow to impact the upper part of the inner wall of the water channel hole 2 at a specific angle. Utilizing its special cross-sectional shape, the water flow forms a turbine-like circulation within the water channel hole 2, achieving self-cleaning. Simultaneously, the directional thrust of the water flow effectively pushes floating objects such as fallen leaves away from the inlet 3, preventing clogging.

[0037] Example 1

[0038] Reference Figure 1 and Figure 2This utility model provides a drainage trough with an oblique guide slit. The drainage trough 1 includes an integrally formed trough bottom 11, a first guide part 12, and a second guide part 13. Water flow channels 2 for drainage are formed on the inner sides of the trough bottom 11, the first guide part 12, and the second guide part 13. The top of the first guide part 12 is provided with an arc-shaped guide surface 121; the side of the second guide part 13 is provided with an oblique guide surface 131; an inlet 3 is formed between the arc-shaped guide surface 121 and the oblique guide surface 131. The cross-section of the water flow channel 2 is a standard oval shape with the larger end facing upwards.

[0039] The first guide section 12 has a first support flange 122 on one side for support. The top end of the second guide section 13 is connected to the top of the second support flange 132, and the first end of the inclined guide surface 131 is connected to the end of the top surface of the second guide section 13. The end of the arc-shaped guide surface 121 is located at the top of the drainage channel hole 2. The second guide section 13 has a second support flange 132 on one side for support. The first end of the inclined guide surface 131 is connected to the top of the second guide section 13, and the end of the inclined guide surface 131 is located at the top of the drainage channel hole 2. These two support flanges work together to stably support the pavement layer, ensuring the stability and durability of the entire drainage system under load. The first end of the top surface of the second guide section 13 is inclined downwards towards the end, and the angle between the top surface of the second guide section 13 and the horizontal line is 2°.

[0040] The construction process is as follows:

[0041] 1. First, prepare the foundation according to the design drawings, pour the concrete foundation, and lay a crushed stone bedding layer with a thickness of not less than 10cm. The bedding layer and the foundation surface must be leveled, and the elevation must not exceed the design value.

[0042] 2. Next, hoist the drainage trough 1. Secure the special metal rod with a steel wire rope and insert the metal rod into the inlet 3. After confirming safety, proceed with the hoisting. Gently place the drainage trough 1 onto the foundation to avoid impact.

[0043] 3. Use a professional pry bar to align the socket and spigot of the adjacent drainage channel 1 and pry them together, then secure them using the iron clips on the side. If there is a height difference between adjacent drainage channels 1, shims must be used to level them. This product is suitable for laying on curves or straight lines with an angle not exceeding 15°. When the angle is greater than 20°, a manhole must be installed for connection.

[0044] 4. After installation, backfill both sides of drainage ditch 1 with gravel up to the roadbed elevation and compact it. Note that mechanical compaction is strictly prohibited within 0.5 meters on either side of drainage ditch 1; manual compaction is required. The area above the foundation can be backfilled with soil as needed.

[0045] Example 2

[0046] Reference Figure 3 , Figure 4 and Figure 5 Based on the basic structure of Embodiment 1, in order to further increase the inlet cross-section, prevent overflow during high flow rates, and improve drainage capacity, this embodiment widens the inlet 3. Specifically, a steel grating structure is used to cover the first guide section 12 and the second guide section 13. This steel grating structure is composed of parallel steel bars 5 and steel ribs 4 welded perpendicularly to them, which significantly increases the effective inlet area while ensuring the structural load-bearing strength. The oblique opening below it still plays the core role of the vacuum high-viscosity guide surface, guiding the water flow efficiently and directionally into the flow channel hole 2.

[0047] The construction process is basically the same as in Example 1. When hoisting and installing the drainage trough 1, care should be taken to protect the top steel grating to avoid deformation.

[0048] Example 3

[0049] Reference Figure 6 This embodiment provides another way to widen the inlet 3. During the prefabrication of the drainage channel 1, concrete ribs 6 are integrally formed between the first guide section 12 and the second guide section 13. These concrete ribs 6 are spaced apart, and the space between them effectively widens the physical width of the inlet 3. Simultaneously, the concrete ribs 6 themselves provide support and protection, enhancing the durability of the structure. This solution is particularly suitable for scenarios with extremely high corrosion resistance requirements or where steel grating is not required to provide additional load-bearing capacity.

[0050] Its construction process is exactly the same as that of Example 1. Thanks to its all-concrete structure, it has a longer service life and lower maintenance requirements.

[0051] Example 4

[0052] The above embodiments mainly describe the application of this utility model on a flow channel hole 2 with an oval cross-section. It should be noted that the downward-sloping inlet 3 formed by the arc-shaped guide surface 121 and the inclined guide surface 131 and the vacuum high-viscosity guide surface formed therein are not limited to oval cross-sections.

[0053] Those skilled in the art will understand that this inlet 3 can also be applied to drainage structures of other shapes. For example, as Figure 7 As shown, a downward-sloping slit-shaped inlet 3 can also be formed on a slit tube 2' with a circular cross-section, thereby constituting the vacuum high-viscosity guide surface.

[0054] In this modified example, the downward-sloping inlet 3 can also adsorb water flow, improve water collection efficiency, and prevent overflow. At the same time, the water flow, guided by the guide surface, impacts the upper part of the circular inner wall, which can also change its flow pattern, forming turbulent or circulating flow that helps clean the inner wall, and using the directional thrust of the water flow to prevent floating debris from clogging it.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drainage channel with an oblique flow guide slit, characterized in that: The device includes a drainage trough, which comprises an integrally formed trough bottom, a first flow guide portion, and a second flow guide portion. The inner sides of the trough bottom, the first flow guide portion, and the second flow guide portion form a water flow channel hole for drainage. The top of the first flow guide portion is provided with an arc-shaped flow guide surface; the side of the second flow guide portion is provided with an inclined flow guide surface; and an inlet is formed between the arc-shaped flow guide surface and the inclined flow guide surface.

2. The drainage channel with inclined guide slits according to claim 1, characterized in that, The first guide section has a first support flange on one side for support, the first end of the arc-shaped guide surface is connected to the first support flange, and the end of the arc-shaped guide surface is located at the top of the water channel hole.

3. The drainage channel with inclined guide slots according to claim 1, characterized in that, The second guide section has a second support flange on one side for support. The first end of the top surface of the second guide section is connected to the top of the second support flange. The first end of the inclined guide surface is connected to the end of the top surface of the second guide section. The end of the inclined guide surface is located at the top of the water channel hole.

4. The drainage channel with inclined guide slits according to claim 3, characterized in that, The top surface of the second guide section is obliquely downward from the first end to the last end, and the angle between the top surface of the second guide section and the horizontal line is 2°.

5. The drainage channel with inclined guide slots according to claim 1, characterized in that, The height of the first guide section is greater than the height of the second guide section.

6. The drainage channel with inclined guide slots according to claim 1, characterized in that, The top of the inlet is provided with concrete ribs for widening the inlet.

7. The drainage channel with inclined flow guide slits according to claim 1, characterized in that, The top of the water inlet is covered with a steel grating structure.

8. The drainage channel with inclined guide slots according to claim 7, characterized in that, The steel grating structure includes steel bars and steel ribs. The steel bars are welded to the steel ribs, and the two ends of the steel ribs are respectively located at the top of the first guide section and the second guide section.

9. The drainage channel with inclined guide slots according to claim 1, characterized in that, The cross-section of the water channel hole is an oval shape with the larger end facing upwards and an opening.

10. The drainage channel with inclined flow guide slits according to claim 1, characterized in that, The cross-section of the water channel hole is a circle with the larger end facing upwards and an opening.

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