Rainwater grate sediment interceptor based on self-gravity flap valve assembly

Abstract

The rainwater grate sediment interceptor comprises an intercepting body, a rainwater grate, the self-gravity flap valve assembly, a filtering assembly and a drainage pipeline, the intercepting body is of a hollow frame structure, an inlet is formed in one side of the top of the intercepting body, the bottom of the intercepting body is connected with the drainage pipeline, and the filtering assembly is installed in the middle of the inner side of the intercepting body; the rainwater grate is installed at an inlet of the intercepting body and comprises a grate frame and a grating, the grating is installed on one side of the grate frame, the other side of the grate frame is communicated with the inlet of the intercepting body, the self-gravity flap valve assembly comprises a flap valve plate, the flap valve plate is located on the inner side of the grate frame, and the top of the flap valve plate is rotatably connected with the grate frame. The flap valve plate covers one side of the grating from top to bottom. Compared with the prior art, the device can obviously prevent dust and sand at the bottom of the side ditch of the road from entering the gutter inlet, and effectively solves the problem that the rainwater pipeline is frequently dredged due to dust and sand deposition.

Description

TECHNICAL FIELD

[0001] The utility model relates to vertical rainwater grate structure field especially is involved in a kind of rainwater grate silt interceptor based on self-gravity flap assembly. BACKGROUND

[0002] In urban drainage system, vertical rainwater grate as the key facility of rainwater collection and discharge, its performance and maintenance condition are directly related to urban drainage efficiency and environmental quality. However, the vertical rainwater grate is widely used in the city at present, such as the vertical grate in the adjustable combined rainwater grate disclosed in the utility model with publication number CN214531040U. The existing vertical rainwater grate has some problems to be solved urgently:

[0003] On the one hand, rainwater pipeline dredging work is facing great challenges, the main reason is that the ash and sand on the road surface enter the pipeline under the rainwater scouring and deposit therein, causing pipeline blockage and affecting the drainage function. On the other hand, most of the existing roadside rainwater inlets are designed with open grating, which is easy to cause ash and sand to be swept into the rainwater inlet when the road sanitation workers clean the ditch bottom, further aggravating the pipeline siltation problem. SUMMARY

[0004] The utility model aims at overcoming the defects of the existing technology that most of the vertical rainwater grates are designed with open grating, ash and sand are easy to accumulate, and the pipeline siltation is aggravated, and provides a rainwater grate silt interceptor based on self-gravity flap assembly.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A rainwater grate silt interceptor based on self-gravity flap assembly, comprising an interception main body, a rainwater grate, a self-gravity flap assembly, a filtering assembly and a drainage pipeline, the interception main body is a frame structure with a hollow interior, an inlet is provided on one side of the top, and a drainage pipeline is connected to the bottom, the filtering assembly is installed on the inside middle part of the interception main body;

[0007] The rainwater grate is installed at the inlet of the interception main body, the rainwater grate comprises a grate frame and a grating, the grating is installed on one side of the grate frame, and the other side is communicated with the inlet of the interception main body, the self-gravity flap assembly comprises a flap plate, the flap plate is located on the inside of the grate frame, and the top of the flap plate is rotatably connected to the grate frame, and the flap plate covers one side of the grating from top to bottom.

[0008] Further, the top of the flap plate is rotatably connected to the grate frame by means of a hinge, and naturally droops by virtue of self-weight, thereby blocking the inside space of the grating and the grate frame.

[0009] Further, the bottom of the flap plate is provided with a detachable counterweight.

[0010] Further, the contact area between the flap plate and the grating frame is provided with a rubber pad, and the corresponding area of the grating frame is provided with a groove for mounting the rubber pad.

[0011] Further, the filter assembly comprises coarse filter screen, medium filter screen and fine filter screen arranged in sequence from top to bottom, the coarse filter screen has the function of filtering particles with particle size greater than 5mm, the medium filter screen has the function of filtering silt particles with particle size greater than 1mm, and the fine filter screen has the function of filtering fine sand particles with particle size greater than 0.1mm.

[0012] Further, the rainwater grating further comprises a fixed step block located outside the grating frame and below the grating.

[0013] Further, the grating comprises a plurality of grating strips, and each grating strip is vertically arranged on one side of the grating frame.

[0014] Further, the flap plate is made of stainless steel.

[0015] Further, the interception main body is made of engineering plastic or stainless steel.

[0016] Further, the surface of the interception main body is treated by epoxy resin anticorrosion.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] (1) The scheme is a partial structure improvement based on the existing vertical rainwater grating, the flap plate is additionally arranged on the inner side of the rainwater grating, and the rainwater grating and the flap plate are connected through a hinge. During the non-rainy season, the flap plate naturally droops by gravity and forms an effective partition, which can significantly block the ash and sand at the bottom of the roadside ditch from entering the rainwater inlet. This innovative design not only effectively solves the problem of frequent desilting of the rainwater pipeline due to ash and sand deposition, but also prevents the ash and sand from accidentally entering the rainwater inlet during the sanitation cleaning operation, thereby greatly alleviating the problem of ash and sand pollution caused by the existing rainwater inlet design, improving the operation efficiency and stability of the urban drainage system, and providing strong support for the sustainable development of urban environment.

[0019] (2) The utility model discloses that the contact area between the flap plate and the grating frame is provided with a rubber pad, and the corresponding area of the grating frame is provided with a groove for mounting the rubber pad.

[0020] (3) The counterweight can be arranged on the flap plate, and the closing gap between the flap plate and the grating can be adjusted and the closing stability under different wind conditions can be adapted by adjusting the counterweight. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A cross-sectional schematic view of a rainwater grate and sediment interceptor based on a self-gravity flap assembly according to an embodiment of the present application is provided.

[0022] Figure 2 A use state flap plate change schematic view of a rainwater grate and sediment interceptor based on a self-gravity flap assembly according to an embodiment of the present application is provided.

[0023] Figure 3 A grating surface schematic view of a grate frame according to an embodiment of the present application is provided.

[0024] Figure 4 A top schematic view of a grate frame according to an embodiment of the present application is provided.

[0025] In the figure, 1, interception main body, 2, rainwater grate, 201, grate frame, 202, grating, 203, fixed step block, 3, flap plate, 4, filter assembly, 401, coarse filter screen, 402, middle filter screen, 403, fine filter screen. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] It needs to be explained that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] Embodiment 1

[0033] As Figures 1-4 shown, the embodiment provides a rainwater grate and sediment interceptor based on a self-gravity flap door assembly, which comprises an interception main body 1, a rainwater grate 2, a self-gravity flap door assembly, a filter assembly 4 and a drainage pipeline, the interception main body 1 is a frame structure with an inner cavity, one side of the top is provided with an inlet, the bottom is connected with the drainage pipeline, the filter assembly 4 is installed in the middle of the inner side of the interception main body 1.

[0034] The rainwater grate 2 is installed at the inlet of the interception main body 1, the rainwater grate 2 comprises a grate frame 201 and a grid 202, one side of the grate frame 201 is installed with the grid 202, and the other side is communicated with the inlet of the interception main body 1, the self-gravity flap door assembly comprises a flap door plate 3, the flap door plate 3 is located on the inner side of the grate frame 201, and the top is rotatably connected with the grate frame 201, and the flap door plate 3 covers one side of the grid 202 from top to bottom.

[0035] Optionally, the top of the flap door plate 3 is rotatably connected with the grate frame 201 through a hinge, and naturally droops by relying on the self-weight, so as to separate the inner side space of the grid 202 and the grate frame 201.

[0036] The present scheme is a partial structure improvement on the basis of the existing vertical rainwater grate. A flap door plate is added to the inner side of the rainwater grate, and the rainwater grate and the flap door plate are connected by a hinge. During the non-rainy season, the flap door plate naturally droops by its own weight, forming an effective barrier that can significantly block the dust and sand at the bottom of the roadside ditch from entering the rainwater inlet. This innovative design not only effectively solves the problem of frequent dredging of rainwater pipelines due to dust and sand deposition, but also prevents dust and sand from accidentally entering the rainwater inlet during sanitation cleaning operations, thereby greatly alleviating the dust and sand pollution problem caused by the existing rainwater inlet design, improving the operation efficiency and stability of the urban drainage system, and providing strong support for the sustainable development of urban environment.

[0037] Preferably, the bottom of the flap door plate 3 is provided with a detachable counterweight (weight range 0.5-1.5 kg) for adapting the closing stability under different wind conditions. The closing gap between the flap door plate 3 and the grid 202 can be adjusted to be ≤0.5 mm by adjusting the counterweight.

[0038] Preferably, the contact area between the flap door plate 3 and the grate frame 201 is provided with a rubber pad, and the corresponding area of the grate frame 201 is provided with a groove for installing the rubber pad.

[0039] The rubber pad has good flexibility and sealing performance. The rubber pad can be accurately cut according to the contact shape of the flap door and the frame in advance, so that it can tightly fit at the connection. A groove is provided at the edge of the frame, and when installed, the rubber pad is embedded in the groove to further fix the position of the rubber pad and prevent it from shifting. In this way, when the flap door is closed, the rubber pad can fill the tiny gap between the flap door and the frame, forming an effective sealing barrier to prevent sewage leakage and prevent odor emission, thereby improving the overall sealing performance of the drainage system.

[0040] Optionally, the filter assembly 4 includes coarse filter screen 401, medium filter screen 402 and fine filter screen 403 distributed in sequence from top to bottom. The coarse filter screen 401 has a particle size greater than 5mm for filtering out impurities, the medium filter screen 402 has a particle size greater than 1mm for filtering out silt particles, and the fine filter screen 403 has a particle size greater than 0.1mm for filtering out fine sand particles.

[0041] That is, the above-mentioned filtering assembly 4 adopts a three-stage gradient interception technology and is integrated in the interception main body. The outermost layer is a coarse filter screen fixed at the inlet through a sliding rail type clamping groove, which can intercept large-particle impurities (particle size > 5 mm) such as small stones and leaves, and the impact load resistance of the corrugated structure is ≥800N; the middle layer is a middle filter screen fixed by an L-shaped bolt support, which supports a ±3° angle fine adjustment and effectively blocks silt particles with a particle size >1mm; the innermost layer is a fine filter screen fixed by quick-release buckles and magnetic sealing, which is installed at an inclination of 30° and coated with a hydrophobic coating (contact angle ≥115°), and can intercept fine sand with a particle size ≥0.1mm. The three layers of filter screens are designed as a modular and detachable structure: the coarse filter screen top pull ring supports 1.5 seconds of quick pulling; the middle filter screen butterfly nut realizes tool-free disassembly; the fine filter screen can be unlocked by pressing the buckle and cleared by reverse flushing (water pressure ≥0.4MPa).

[0042] Optionally, the rainwater grate 2 further comprises a fixed step block 203 located outside the grate frame 201 and below the grid 202; the fixed step block 203 is used to assist in stably installing the rainwater grate 2 on the ground surface.

[0043] Specifically, the grid 202 comprises a plurality of grid bars, each of which is vertically arranged on one side of the grate frame 201. These grid bars are vertically arranged and closely fitted under the action of gravity. When the road surface has sand and other impurities flowing towards the rainwater grate with water, the vertical grid bars can intercept the sand and stones outside the rainwater grate like a fence, effectively preventing sand and stones from entering the drainage pipeline and causing blockage.

[0044] Optionally, the flap door plate 3 is made of stainless steel.

[0045] The interception main body 1 is made of engineering plastic or stainless steel.

[0046] The surface of the interception main body 1 is treated with epoxy resin anticorrosion.

[0047] In this embodiment, a vertical frame made of nodular cast iron QT500-7 is used, a hinge shaft mounting seat is provided at the top, and a guide wing plate is provided on the side wall to reduce wind and sand accumulation.

[0048] The flap door plate 3 is a 304 stainless steel plate with a thickness of 3mm, which is connected to the frame through a hinge shaft, and is closed under the action of gravity in normal state, with a closed gap ≤0.5mm.

[0049] The bottom of the flap door plate 3 is provided with a detachable counterweight block (weight range 0.5-1.5kg) for adapting to the closing stability under different wind conditions.

[0050] The surface of the frame is treated with epoxy resin anticorrosion, and the salt mist resistance test is ≥1000 hours.

[0051] The installation steps of the above scheme in use are as follows:

[0052] Embed vertical frame at road curbstone as intercepting body 1, adjust horizontal error ≤2mm;

[0053] Install flap door plate 3, adjust counterweight to close gap ≤0.5mm (use plug gauge to detect);

[0054] Embed filter assembly 4, connect drainage pipe to municipal pipe network.

[0055] Operation mode

[0056] No rain state: flap door plate 3 is completely closed, and sand and odor are isolated by sealing strip, and the actual measured sand invasion amount is reduced by ≥90%;

[0057] Light rain state (rainfall intensity ≤10mm / h): flap door plate 3 is partially opened (angle 15°), filter assembly 4 intercepts sand particles with a particle size of ≥0.5mm, and the drainage efficiency is ≥85%;

[0058] Heavy rain state (rainfall intensity ≥30mm / h): flap door plate 3 is fully opened (angle 75°), the maximum flow rate is 60L / s, and the self-cleaning frequency of filter assembly 4 is improved.

[0059] The above describes the preferred embodiments of the present application. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the existing technology according to the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A rainwater grate sediment interceptor based on a self-gravity flap assembly, characterized by, The utility model provides a rainwater interception device, which comprises an interception body (1), a rainwater grate (2), a self-gravity flap assembly, a filtering assembly (4) and a drainage pipeline, the interception body (1) is a frame structure with an inside hollow, an inlet is arranged on one side of the top, and the bottom is connected with the drainage pipeline, and the filtering assembly (4) is arranged in the middle of the inside of the interception body (1). The rainwater grate (2) is arranged on the inlet of the interception body (1), the rainwater grate (2) comprises a grate frame (201) and a grid (202), the grid (202) is arranged on one side of the grate frame (201), and the other side is connected with the inlet of the interception body (1); the self-gravity flap assembly comprises a flap plate (3), the flap plate (3) is arranged on the inside of the grate frame (201) and is rotatably connected with the grate frame (201) through the top, and the flap plate (3) covers one side of the grid (202) from top to bottom.

2. A rainwater grate and sediment interceptor based on a self-gravity flap assembly according to claim 1, characterized in that, The top of the flap plate (3) is rotatably connected with the grate frame (201) through a hinge, and the flap plate (3) naturally drops by gravity, thereby separating the grid (202) from the inside space of the grate frame (201).

3. A rainwater grate and sediment interceptor based on a self-gravity flap valve assembly according to claim 1, characterized in that, The bottom of the flap plate (3) is provided with a detachable counterweight.

4. A rainwater grate and sediment interceptor based on a self-gravity flap valve assembly according to claim 1, characterized in that, A rubber pad is arranged in the contact area between the flap plate (3) and the grate frame (201), and a groove for arranging the rubber pad is arranged in the corresponding area of the grate frame (201).

5. A rainwater grate and sediment interceptor based on a self-gravity flap valve assembly according to claim 1, characterized in that, The filtering assembly (4) comprises coarse filter screens (401), medium filter screens (402) and fine filter screens (403) arranged from top to bottom, the coarse filter screens (401) have the function of filtering out particles with a particle size greater than 5 mm, the medium filter screens (402) have the function of filtering out sludge particles with a particle size greater than 1 mm, and the fine filter screens (403) have the function of filtering out fine sand particles with a particle size greater than 0.1 mm.

6. A rainwater grate and sediment interceptor based on a self-gravity flap valve assembly according to claim 1, characterized in that, The rainwater grate (2) further comprises a fixed step block (203), which is arranged on the outside of the grate frame (201) and below the grid (202).

7. A rainwater grate and sediment interceptor based on a self-gravity flap valve assembly according to claim 1, characterized in that, The grid (202) comprises a plurality of grid bars, and each grid bar is arranged vertically on one side of the grate frame (201).

8. A rainwater grate and sediment interceptor based on a self-gravity flap valve assembly according to claim 1, characterized in that, The flap plate (3) is made of stainless steel.

9. A rainwater grate and sediment interceptor based on a self-gravity flap valve assembly according to claim 1, characterized in that, The interception body (1) is made of engineering plastic or stainless steel.

10. A rainwater grate and sediment interceptor based on a self-gravity flap valve assembly according to claim 1, characterized in that, The surface of the interception body (1) is subjected to epoxy resin corrosion prevention treatment.

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