Anti-clogging drainage device
By installing water spraying and water collection components on the rain grate, the problem of easy clogging of the rain grate is solved by using water spraying and physical screening, realizing automated anti-clogging and efficient drainage, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI GUOCHUANG ROAD ENG CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-06-09
AI Technical Summary
In existing municipal drainage systems, rainwater grates are prone to forming a "watertight" seal with flexible debris, leading to blockages. Furthermore, there is a lack of proactive anti-blockage mechanisms, resulting in high maintenance costs.
A clog-resistant drainage device was designed, including a water spraying component and a water collecting component. The water spraying component sprays water upward through a water spray pipe to flush away debris, while the water collecting component collects rainwater and transports it to the water spraying component. Combined with a raised block and a conical top cover, the device achieves physical sieving and automatic cleaning of debris.
It achieves automated anti-clogging, reduces maintenance costs, improves drainage efficiency, is highly adaptable, and requires no external water or electricity, making it energy-saving and environmentally friendly.
Smart Images

Figure CN224338385U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of municipal drainage technology, specifically to an anti-clogging drainage device. Background Technology
[0002] Municipal drainage refers to a complete set of engineering facilities built within a city to remove industrial and domestic wastewater and natural precipitation. It is one of the important urban infrastructures, including collection devices that can quickly collect rainwater from the ground.
[0003] In municipal drainage systems, storm drain grates are core collection components, their function relying on permeable holes to filter and divert rainwater. However, existing technologies have the following significant drawbacks:
[0004] Congestion is a prominent issue.
[0005] The expansion of urban green areas has led to a surge in fallen leaves in autumn. Soft debris such as leaves and weeds can easily cover the drainage holes, creating a "watertight" seal that hinders rainwater infiltration.
[0006] Traditional rainwater grates rely solely on static pore filtration and lack an active anti-clogging mechanism, requiring frequent manual cleaning and resulting in high maintenance costs.
[0007] Therefore, an anti-clogging drainage device is proposed to solve the above-mentioned problems. Utility Model Content
[0008] Based on the above description, this utility model provides an anti-clogging drainage device to solve the problem that rainwater grates easily form a "watertight fit" with flexible debris, thus causing blockage.
[0009] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an anti-clogging drainage device, comprising: a water spraying component and a water collecting component;
[0010] The water spray component includes a connecting pipe disposed below the rain grate, and a water spray pipe is provided on the side of the connecting pipe;
[0011] The water collection component is mounted above the rain grate via a support frame and is connected to the water spray component. It is used to collect rainwater and then transport the rainwater into the interior of the water spray component, and discharge it from the water spray pipe.
[0012] Based on the above technical solution, the present invention can be further improved as follows.
[0013] Furthermore, the rain grate includes a grate body, and the upper surface of the grate body is provided with an installation hole, multiple water-permeable holes and multiple protrusions. The multiple water-permeable holes are at least divided into groups, and the group of water-permeable holes are equidistantly distributed.
[0014] Furthermore, the protrusions are disposed between two adjacent water-permeable holes, and the multiple protrusions located between the two adjacent water-permeable holes are equidistantly distributed, with a gap between the two adjacent protrusions.
[0015] Furthermore, the water spray component includes a main water supply pipe, which is located below the grate body and extends through and above the mounting hole.
[0016] Furthermore, a secondary water supply horizontal pipe is provided on the circumferential surface of the main water supply pipe, located below the main body of the grate. Both the circumferential surface of the secondary water supply horizontal pipe and the circumferential surface of the main water supply pipe are provided with connecting pipes, which are located below the water permeable holes.
[0017] Furthermore, both the secondary water supply horizontal pipe and the connecting pipe are connected to the grate body by screws. The connecting pipe has multiple water spray pipes that communicate with each other on its circumferential surface. The openings of the water spray pipes are inclined upwards and located directly below the water permeable holes.
[0018] Furthermore, the support frame includes an upright post located on the side of the rain grate, the upright post being set on the ground, a horizontal bar being provided on the circumference of the upright post, and a pipe clamp being provided at the end of the horizontal bar away from the upright post.
[0019] Furthermore, the water collection component includes a vertical pipe, the pipe clamp is sleeved on the outside of the vertical pipe, one end of the vertical pipe extends into the inside of the main water supply pipe, and an annular groove is provided on the circumferential surface of the end inside the main water supply pipe. A sealing ring is provided inside the annular groove, and the outer ring of the sealing ring is tightly fitted with the inner surface of the main water supply pipe.
[0020] Furthermore, the top of the vertical pipe is provided with a solenoid valve and a water collection funnel from bottom to top. The water collection funnel is connected to the main water supply pipe through the vertical pipe. The top of the water collection funnel is provided with a conical top cover. The upper surface of the conical top cover is provided with a water inlet hole. The lower surface of the conical top cover is provided with a positioning cylinder extending into the interior of the water collection funnel.
[0021] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:
[0022] 1. This utility model sets up components such as rain grate, spraying component and water collection component. Through the cooperation between the water collection component and the spraying component, the rainwater is collected by the water collection component and then transported downwards and sprayed out at an upward angle from the spraying pipe. The sprayed water enters the interior of the permeable hole and washes the leaves on the upper surface of the rain grate.
[0023] 2. By designing the water collection components, rainwater can be collected. The inlet hole allows rainwater to enter the inside of the collection funnel, and the conical top cover allows leaves and other debris to slide off to the ground when they fall onto its surface, ensuring that rainwater can enter the inside of the collection funnel. Attached Figure Description
[0024] Figure 1 A schematic diagram of the structure of an anti-clogging drainage device provided in an embodiment of this utility model;
[0025] Figure 2 for Figure 1 Structural sectional view;
[0026] Figure 3 This is a schematic diagram of the structure of the rain grate in an embodiment of this utility model;
[0027] Figure 4 This is a schematic diagram of the water spray component in an embodiment of the present invention;
[0028] Figure 5 for Figure 4 Another structural diagram from another perspective;
[0029] Figure 6 This is a schematic diagram of the support frame in an embodiment of the present utility model;
[0030] Figure 7 This is a schematic diagram of the water collection component in an embodiment of the present invention;
[0031] The attached diagram lists the components represented by each number as follows:
[0032] 1. Rain grate; 11. Grate body; 12. Drain hole; 13. Protrusion; 14. Mounting hole; 2. Sprayer component; 21. Main water supply pipe; 22. Secondary water supply horizontal pipe; 23. Connecting pipe; 24. Sprayer pipe; 3. Support frame; 31. Upright pole; 32. Horizontal bar; 33. Pipe clamp; 4. Water collection component; 41. Vertical pipe; 42. Water collection funnel; 43. Conical top cover; 44. Positioning cylinder; 45. Water inlet; 46. Annular groove; 47. Sealing ring; 5. Solenoid valve. Detailed Implementation
[0033] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0035] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.
[0036] Please see Figure 1 and Figure 2 A clog-resistant drainage device includes: a water spray component 2 and a water collection component 4;
[0037] The water spray component 2 includes a connecting pipe 23 disposed below the rain grate 1, and a water spray pipe 24 is disposed on the side of the connecting pipe 23;
[0038] The water collection component 4 is mounted above the rain grate 1 via the support frame 3 and is connected to the water spray component 2. It is used to collect rainwater and then transport the rainwater into the interior of the water spray component 2 and discharge it from the water spray pipe 24.
[0039] Based on the above, the water collecting component 4 plays the role of collecting rainwater, while the water spraying component 2 plays the role of making rainwater spray out from bottom to top under the action of gravity.
[0040] like Figure 3 As shown, the rain grate 1 includes a grate body 11. The upper surface of the grate body 11 is provided with an installation hole 14, multiple water permeable holes 12, and multiple protrusions 13. The multiple water permeable holes 12 are at least divided into groups, and the group of water permeable holes 12 are equidistantly distributed. The protrusions 13 are disposed between two adjacent water permeable holes 12. The multiple protrusions 13 located between two adjacent water permeable holes 12 are equidistantly distributed, and a gap is provided between two adjacent protrusions 13.
[0041] Based on the above, the rain grate 1 is improved on the basis of the existing technology by adding a protrusion 13 and a mounting hole 14. The protrusion 13 prevents flexible debris such as leaves from completely adhering to the upper surface of the grate body 11 when they come into contact with the upper surface of the rain grate 1 under the action of water flow. That is, a gap is easily formed between the leaves and the grate body 11, so that the water flow can continue to flow into the interior of the drainage pipe through the water permeable hole 12. The mounting hole 14 allows the water spraying component 2 to be connected to the water collecting component 4.
[0042] like Figure 4 and Figure 5 As shown, the water spray component 2 includes a main water supply pipe 21, which is located below the grate body 11 and extends through and above the mounting hole 14. A secondary water supply horizontal pipe 22 is provided on the circumferential surface of the main water supply pipe 21, located below the grate body 11. A connecting pipe 23 is provided on both the circumferential surface of the secondary water supply horizontal pipe 22 and the circumferential surface of the main water supply pipe 21. The connecting pipe 23 is located below the water permeable hole 12.
[0043] The secondary water conveying horizontal pipe 22 and the connecting pipe 23 are both connected to the grate body 11 by screws. Multiple water spray pipes 24 that communicate with each other are provided on the circumferential surface of the connecting pipe 23. The opening of the water spray pipe 24 is inclined upward and located directly below the water permeable hole 12.
[0044] Based on the above, the water spray component 2 guides the water flow, enabling the water to be transported in a directional manner. The transported water flows out from the opening of the water spray pipe 24, and the sprayed water flows upward at an angle. The opening angle of the water spray pipe is 30°-60°, preferably 45°. The inclination angle of the water spray pipe 24 is matched with the water flow velocity. According to Bernoulli's equation, when the water level of the water collection component 4 reaches 500mm, the outlet velocity of the water spray pipe 24 can reach 2-3m / s, forming an effective scouring force.
[0045] like Figure 1 , Figure 2 and Figure 6 As shown, the support frame 3 includes an upright 31 located on the side of the rain grate 1. The upright 31 is set on the ground. A horizontal bar 32 is provided on the circumferential surface of the upright 31. A pipe clamp 33 is provided at the end of the horizontal bar 32 away from the upright 31.
[0046] Based on the above, the support frame 3 is fixed to the ground with screws, and the water collection component 4 is fixedly connected to the support frame 3 under the action of the screws and pipe clamps 33.
[0047] like Figure 7 As shown, the water collection component 4 includes a vertical pipe 41, and the pipe clamp 33 is sleeved on the outside of the vertical pipe 41. One end of the vertical pipe 41 extends into the interior of the main water supply pipe 21, and an annular groove 46 is provided on the circumferential surface of one end inside the main water supply pipe 21. A sealing ring 47 is provided inside the annular groove 46, and the outer ring of the sealing ring 47 is tightly fitted to the inner surface of the main water supply pipe 21.
[0048] The top of the vertical pipe 41 is provided with a solenoid valve 5 and a water collection funnel 42 from bottom to top. The solenoid valve 5 is preferably powered by a storage battery. The water collection funnel 42 is connected to the main water supply pipe 21 through the vertical pipe 41. The top of the water collection funnel 42 is provided with a conical top cover 43, the inclination angle of the conical surface is ≥45°, the upper surface of the conical top cover 43 is provided with a water inlet hole 45, and the lower surface of the conical top cover 43 is provided with a positioning cylinder 44 extending into the water collection funnel 42.
[0049] Based on the above, the conical top cover 43 and the water inlet 45 are designed to collect rainwater while preventing leaves from clogging the water inlet 45. That is, by using gravity, leaves and other debris slide down the slope, and only rainwater enters through the water inlet, achieving the integrated effect of "physical screening - rainwater collection".
[0050] The sealing ring 47 provides a sealing effect, preventing water from leaking from the connection between the vertical pipe 41 and the main water supply pipe 21. The solenoid valve 5 controls whether the collected rainwater flows downward.
[0051] Working principle
[0052] 1. Rainwater harvesting stage
[0053] During rainfall, rainwater flows into the collection funnel through the inlet hole of the conical top cover, is transported by gravity through the vertical pipe to the main water supply pipe, and then distributed to the secondary water supply horizontal pipe and connecting pipe, and finally stored in the upstream pipeline of the sprinkler pipe.
[0054] 2. Automatic flushing stage
[0055] When the rainfall reaches a set threshold (e.g., cumulative rainfall ≥ 10mm), or is triggered by a liquid level sensor (with optional intelligent module), or is set to open the solenoid valve at a set time (CLCEY series automatic time solenoid valve is preferred), the solenoid valve opens, and the stored rainwater is sprayed upwards from the sprinkler pipe, forming a high-speed water flow (flow velocity ≥ 1.5m / s):
[0056] Water flows through the permeable holes and washes the upper surface of the grate from bottom to top, peeling off the adhering leaves and debris;
[0057] The flushed wastewater, carrying debris, flows into the drainage pipe through the permeable holes, completing the self-cleaning process.
[0058] 3. Normal drainage stage
[0059] In non-flushing conditions, rainwater flows directly into the pipes through the permeable holes of the grate, and the gaps formed by the protrusions ensure the efficiency of the foundation drainage.
[0060] In summary, this drainage device has the following effects;
[0061] Self-circulating anti-clogging: No external water or electricity is required. It uses natural rainfall to achieve a closed loop of "collection-flushing-drainage", with a water saving rate of ≥90% and energy consumption reduced by 100% (the power required by the solenoid valve is not included).
[0062] Dynamic cleaning: The optimized design of the spray pipe angle and flow rate can remove more than 95% of the leaves, catkins and other debris adhering to the surface of the grate, improving drainage efficiency by 3-5 times.
[0063] Compact structure: It is integrated under the existing rainwater grate, without the need for large-scale modification of the municipal pipe network, reducing installation costs by more than 50%, and has strong adaptability.
[0064] Intelligent expansion: It can be connected to the city's drainage Internet of Things system, remotely control the flushing frequency through solenoid valves, or link with meteorological data to realize the pre-flushing function (such as automatically draining the water in the pipes before heavy rain to increase drainage capacity).
[0065] 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 clog-resistant drain device, characterized by, include: Water spray component (2) and water collection component (4); The water spray component (2) includes a connecting pipe (23) disposed below the rain grate (1), and a water spray pipe (24) is provided on the side of the connecting pipe (23). The water collection component (4) is set above the rain grate (1) via a support frame (3) and is connected to the water spray component (2) to collect rainwater and then transport the rainwater to the interior of the water spray component (2) and discharge it from the water spray pipe (24).
2. The anti-clogging drain device of claim 1, wherein The rain grate (1) includes a grate body (11), and the upper surface of the grate body (11) is provided with an installation hole (14), multiple water-permeable holes (12) and multiple protrusions (13). The multiple water-permeable holes (12) are divided into at least one group, and the group of water-permeable holes (12) are equidistantly distributed.
3. The anti-clogging drain device of claim 2, wherein The protrusion (13) is disposed between two adjacent water-permeable holes (12). The multiple protrusions (13) located between the two adjacent water-permeable holes (12) are distributed at equal intervals, and a gap is provided between the two adjacent protrusions (13).
4. The anti-clogging drain device of claim 2, wherein The water spray component (2) includes a main water supply pipe (21), which is located below the grate body (11) and extends through and above the mounting hole (14).
5. The anti-clogging drain device of claim 4, wherein The main water supply pipe (21) has a secondary water supply horizontal pipe (22) located below the grate body (11) on its circumferential surface. Both the secondary water supply horizontal pipe (22) and the main water supply pipe (21) have connecting pipes (23) on their circumferential surfaces. The connecting pipes (23) are located below the water permeable hole (12).
6. The anti-clogging drainage device according to claim 5, characterized in that, The secondary water supply horizontal pipe (22) and the connecting pipe (23) are both connected to the grate body (11) by screws. Multiple water spray pipes (24) are provided on the circumferential surface of the connecting pipe (23) and are interconnected with the connecting pipe (23). The opening of the water spray pipe (24) is inclined upward and located directly below the water permeable hole (12).
7. The anti-clogging drainage device according to claim 4, characterized in that, The support frame (3) includes a vertical pole (31) located on the side of the rain grate (1), the vertical pole (31) is set on the ground, a horizontal bar (32) is provided on the circumference of the vertical pole (31), and a pipe clamp (33) is provided at the end of the horizontal bar (32) away from the vertical pole (31).
8. The anti-clogging drainage device according to claim 7, characterized in that, The water collection component (4) includes a vertical pipe (41), and the pipe clamp (33) is sleeved on the outside of the vertical pipe (41). One end of the vertical pipe (41) extends into the inside of the main water supply pipe (21), and an annular groove (46) is provided on the circumferential surface of one end inside the main water supply pipe (21). A sealing ring (47) is provided inside the annular groove (46), and the outer ring of the sealing ring (47) is tightly fitted to the inner surface of the main water supply pipe (21).
9. The anti-clogging drainage device according to claim 8, characterized in that, The top of the vertical pipe (41) is provided with a solenoid valve (5) and a water collection funnel (42) from bottom to top. The water collection funnel (42) is connected to the main water supply pipe (21) through the vertical pipe (41). The top of the water collection funnel (42) is provided with a conical top cover (43). The upper surface of the conical top cover (43) is provided with a water inlet hole (45). The lower surface of the conical top cover (43) is provided with a positioning cylinder (44) extending into the interior of the water collection funnel (42).