CN114718176B - Anti-overflow anti-clogging rain grate and working mechanism thereof - Google Patents
Anti-overflow anti-clogging rain grate and working mechanism thereof Download PDFInfo
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- CN114718176B CN114718176B CN202210420454.9A CN202210420454A CN114718176B CN 114718176 B CN114718176 B CN 114718176B CN 202210420454 A CN202210420454 A CN 202210420454A CN 114718176 B CN114718176 B CN 114718176B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Life Sciences & Earth Sciences (AREA)
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- Hydrology & Water Resources (AREA)
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Abstract
The invention provides a flow-through-preventing anti-clogging rainwater grate and a working mechanism thereof, which are composed of the following two parts: a longitudinal grate system, a latitudinal grate system and a diversion slope; the longitudinal grate system and the latitudinal grate system are hollow rainwater grate systems formed by the longitudinal grate and the latitudinal grate which are mutually perpendicular; the flow guiding slope is a downward fold-line-shaped plate or an arc-shaped plate between the grates starting from the water inlet side of the warp-weft grate system, and the included angle between the whole linear shape of the flow guiding slope and the horizontal plane is from small to large from the water inlet end. The overflow-preventing and anti-clogging rain grate has better overflow-preventing effect under the condition of larger water flow or longitudinal slope, is very suitable for urban waterlogging rain grate water collection in a storm period and large longitudinal slope road rain grate water collection, and achieves the overflow-preventing effect which is not intended.
Description
Technical Field
The invention belongs to the technical field of drainage engineering, and particularly relates to a side ditch and a transverse ditch rainwater grate in road engineering, which is also suitable for rainwater grates at various rainwater wellheads in squares and the like.
Background
Definition of the overflow phenomenon: the overflow refers to the phenomenon that water flow directly passes over the rain grate without entering the rain water well.
The mechanism of generation of the overflow phenomenon: the reasons for this are the following three points: (1) excess water flows into the rain grate; (2) the road gradient is too steep, etc., and the flow rate of water does not drop; (3) the rain grate has small aperture ratio (including clogging) and insufficient drainage.
The overflow phenomenon is cumulative, and the more serious the overflow is, the more the rainwater grate is positioned below the water flow direction.
In road engineering, the side ditch and the intercepting ditch of the abrupt slope section are influenced by a large gradient, the surface runoff is over-flowing, the rainwater grate has poor water collecting effect, and water on the road surface is caused. This situation is frequent in urban underpass tunnel road sections, in heavy rain, a large amount of surface runoffs pass through the rainwater grate of the side ditch and the transverse ditch, the rainwater grate has low water receiving efficiency, road surface ponding is caused, life and property losses are caused even more, and urban waterlogging road traffic safety is getting more and more important to the country.
Especially, in recent years, more and more rare extremely heavy storm conditions occur many times, in this case, even on a non-steep slope road section, under the condition that the surface runoff is fast, serious overflow phenomenon occurs in the side ditches and the cross ditches of the road surface, the rainwater grate has poor water collecting effect under the working condition, a large amount of water accumulation on the surface is caused, municipal staff is required to lift the rainwater manhole cover, and rainwater is discharged rapidly, but the workload which is difficult to complete in a very short period is brought. In addition, due to the lack of protection of the rain grate, the uncapped rain well becomes a killer on the road, and passing vehicles and pedestrians can sink into the rain well to cause life and property loss.
Therefore, the method which is economical and easy to operate is adopted to realize the overflow prevention of the rainwater grate, ensure the water collection of the rainwater grate and is a problem which needs to be researched and solved urgently.
The existing rainwater grate, such as ' a rainwater grate: CN202010067332.7 ', ' a rainwater grate (patent number: CN202010291998.0 ', ' a welding-free rainwater grate (patent number: CN202110946311.7 ', ' a side-discharge rainwater grate (patent number: CN201811448972.1 ', ' a composite resin rainwater grate (patent number: CN202010883270.7 ', ' a interception type rainwater grate (patent number: CN 201610206702.4) ", ' a flow self-regulating rainwater grate (patent number: CN 201910716328.6)", ' a siphon type rainwater grate drainage system (patent number: CN2017186788. X) ", ' a large amount of rainwater grate easy to drain (patent number: CN 201610912653.6)", ' a novel rainwater grate for separating initial rainwater runoffs (patent number: CN 201410254468.3) ", ' a rainwater grate (patent number: CN 202020302119.5)", ' a rainwater grate for draining water flow rate of the rainwater is more than the actual condition, and the rainwater grate is prevented from being brought into consideration by the conditions of a large slope, and the water flow rate is more than the condition that the rainwater grate is in the road surface of the road surface, the road surface is more than the road surface, the water is in a high-slope condition that the road surface is in consideration of the condition that the rainwater is in the condition of the water flow.
At present, urban waterlogging is getting more and more attention, extremely rainstorm weather frequency is becoming higher and higher, with little economic input, through improvement surface runoff's first entry-traditional rainwater grate, realize rainwater grate self prevent the function of flowing beyond, guarantee extremely rainstorm weather or the road surface of big longitudinal slope not ponding very necessary. In addition, the rainwater grate after the development and improvement realizes the function of preventing deposits such as fallen leaves from blocking the water inlet.
Disclosure of Invention
The invention aims to solve the problems and provide the overflow-resistant and anti-clogging rain water grate.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
the overflow-preventing and silt-blocking-resisting rain water grate consists of the following two parts: a longitudinal grate system, a latitudinal grate system and a diversion slope;
the longitudinal grate system and the latitudinal grate system are hollow rainwater grate systems formed by the longitudinal grate and the latitudinal grate which are mutually perpendicular;
the flow guiding slope is a downward fold-line-shaped plate or an arc-shaped plate between the grates starting from the water inlet side of the warp-weft grate system, and the included angle between the whole linear shape of the flow guiding slope and the horizontal plane is from small to large from the water inlet end;
the working mechanism of the overflow-proof anti-clogging rain water grate is that,
a diversion slope is additionally arranged to provide a downward inclined diversion surface, and when water flows into the rainwater grate, the water flow of the free falling body impacts the diversion slope, and an air layer is formed between an impact line and a water flow free falling body starting line;
air with closed air layer moves downwards under the guidance of water flow, and the air layer becomes vacuum state;
the vacuum state forms negative pressure, and the negative pressure is expressed as that the diversion slope generates huge attraction to water flow, so that the diversion slope is highly sticky;
the vacuum state is continuously maintained by the water flow, the diversion slope always maintains the highly viscous water state, and the overflow of the rainwater grate is prevented.
The invention further discloses the following technology:
preferably, the longitudinal grate is perpendicular to the water inlet and arranged along the water flow direction, and the latitudinal grate is perpendicular to the longitudinal grate;
the flow guiding slope is arranged between the warp-wise grate bars, and the two ends of the flow guiding slope are fully adhered to the downward fold-line plates or the arc plates of the warp-wise grate bars, and the flow guiding slope is in no contact with the space of the weft-wise grate bars.
Preferably, the longitudinal grate is plate-shaped, and the latitudinal grate is strip-shaped.
Preferably, the interval between 1 to more latitudinal grate bars at the upper part of the diversion slope is increased.
Preferably, the water inlet side first-pass latitudinal grate is arranged so as to project downwards beyond two thirds of the total length in the plane of the diversion slope.
Preferably, for the two-way water inlet rainwater grate, the same flow guiding slope is arranged between the latitudinal direction grate bars and the same flow guiding slope is arranged between the latitudinal direction grate bars, the flow guiding slope structure of the latitudinal direction grate bars is the same as the flow guiding slope of the longitudinal direction grate bar structure, and the interval between 1 strip to a plurality of longitudinal direction grate bars on the upper part of the flow guiding slope is increased.
Preferably, the first-channel latitudinal grate on the water inlet side is arranged to be projected downwards beyond two thirds of the total length in the plane of the diversion slope, and the first-channel longitudinal grate on the water inlet side is arranged to be projected downwards beyond two thirds of the total length in the plane of the diversion slope.
Preferably, the part from the beginning end to the end of the diversion slope is a diversion slope starting line and a diversion slope second level line, the included angle between the diversion slope starting line and the horizontal plane is 10 degrees to 25 degrees, and the included angle between the diversion slope second level line and the horizontal plane is 25 degrees to 45 degrees.
Preferably, the line in the initial line of the diversion slope and the second level line of the diversion slope is a straight line or an arc tangent line.
The beneficial effects of the invention are as follows:
the overflow-preventing and anti-clogging rain grate has better overflow-preventing effect under the condition of larger water flow or longitudinal slope, is very suitable for urban waterlogging rain grate water collection in a storm period and large longitudinal slope road rain grate water collection, and achieves the overflow-preventing effect which is not intended.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art;
FIG. 1 is a schematic view of a rectangular overflow-preventing anti-clogging rain grate;
FIG. 2 is a schematic view of a circular anti-overflow anti-clogging rain grate;
FIG. 3 is a schematic diagram of the working mechanism of the overflow-proof anti-clogging rain grate;
in the figure: 1-warp grate, 2-weft grate, 3-diversion slope, 3-1-diversion slope starting line and 3-2-diversion slope second level line.
Specific working mechanism
In order that the manner in which the above recited features, objects and advantages of the present invention are obtained, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the embodiments in the working mechanism, other embodiments obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
As shown in figure 1, the anti-overflow anti-clogging rain water grate has a square structure, and water enters from one side, and consists of the following two parts: a longitudinal grate system, a latitudinal grate system and a diversion slope.
The overflow-preventing and silt-blocking-resisting rain water grate consists of the following two parts: a longitudinal grate system, a latitudinal grate system and a diversion slope;
the longitudinal grate system and the latitudinal grate system are hollow rainwater grate systems formed by the longitudinal grate and the latitudinal grate which are mutually perpendicular; the longitudinal grate 1 is perpendicular to the water inlet and is arranged along the water flow direction, and the latitudinal grate 3 is perpendicular to the longitudinal grate; the warp-wise grate adopts a plate shape, and the weft-wise grate adopts a strip shape. The radial grate is preferably bearing flat steel, the distance is preferably 3cm, the height of the steel plate is preferably in the range of 3.8-7.5cm, the latitudinal grate is preferably twisted square steel, round steel or flat steel cross bars, the distance is preferably 5cm, and the projection length of the diversion slope plane is preferably 10cm.
The flow guiding slope 3 is arranged between the grates starting from the water inlet of the rainwater grate, the flow guiding slope is arranged between the warp-wise grates, the two ends of the flow guiding slope are fully adhered to the downward fold-line-shaped plates or the arc-shaped plates with the warp-wise grates, the included angle between the whole linear shape and the horizontal plane is from small to large from the water inlet end, the flow guiding slope is in non-contact with the weft-wise grates in space, and the interval between 1 to multiple weft-wise grates at the upper part of the flow guiding slope is increased.
In the embodiment, the first-channel latitudinal grate on the water inlet side is arranged to be projected downwards at the end part of the diversion slope.
The diversion slope can bring the effect of outwards pushing floaters in hydraulics simultaneously, the pushing and floating actions on floaters such as fallen leaves are enhanced, the situation that sundries such as fallen leaves are far away from the diversion slope and then stacked on the grate is achieved, and the water inlet is prevented from being blocked.
The part from the beginning end to the end of the diversion slope is a diversion slope beginning line 3-1 and a diversion slope second level line 3-2, the included angle between the diversion slope beginning line and the horizontal plane is 10 degrees to 25 degrees, and the included angle between the diversion slope second level line and the horizontal plane is 25 degrees to 45 degrees.
The line in the initial line of the diversion slope and the second level line of the diversion slope is a straight line.
As shown in fig. 3, the working mechanism is as follows:
(1) The anti-overflow rain grate is characterized in that a diversion slope is additionally arranged on the anti-overflow rain grate, a downward inclined diversion surface is provided, and when water flows into the rain grate, the water flow of the free falling body (the faster the speed is, the larger the water quantity is, the farther the water throwing distance is) is impacted on the diversion slope. The impact line and the water flow freely fall between the initial lines to form an air layer (air bag-considering the surrounding effect of the grate on two sides).
(2) The air enclosed by the air layer (air cell) moves downward under the guidance of the water flow, and the air layer (air cell) becomes a vacuum state.
(3) The vacuum state forms negative pressure, and the negative pressure is expressed as that the diversion slope generates huge attraction to water flow, so that the diversion slope is highly sticky.
(4) The vacuum state is continuously maintained by the water flow, the diversion slope always maintains the highly viscous water state, and the overflow of the rainwater grate is prevented.
As shown in figure 2, the anti-overflow anti-clogging rain water grate has a circular structure and edge water inlet, and the principle is the same as that of figure 1.
The invention can also be used for a two-way water inlet rainwater grate, and has the structural characteristics similar to those of a one-way water inlet rainwater grate, the flow guiding slopes which are the same as those among the warp-wise grate are arranged among the weft-wise grate, the flow guiding slope structure of the weft-wise grate is the same as that of the warp-wise grate, and the interval between 1 or more warp-wise grate at the upper part of the flow guiding slope is increased.
Example 1: the 400mm multiplied by 500mm overflow-resistant anti-clogging rain water grate passes through an indoor hydraulics test, and the water receiving percentage data under different longitudinal slopes and water flows are shown in the following table.
Under the same conditions, a rain grate with a flow guiding slope of 400mm multiplied by 500mm is not arranged, and through an indoor hydraulics test, the water receiving percentage data under different longitudinal slopes and water flows are shown in the following table. In addition, the flow guiding slope increasing material amount of the anti-overflow type rain grate is only 7.3% of that of the traditional rain grate.
Through an indoor hydraulics test, the water yield of the traditional rain water grate with the flow-guiding slope not arranged is greatly increased under the condition that the water yield percentage is higher than that of the traditional rain water grate with the flow-guiding slope not arranged under the same condition under different longitudinal slopes and water flows by 400mm multiplied by 500 mm.
Example 2: the 400mm x 700mm overflow-resistant anti-clogging rain water grate passes through an indoor hydraulics test, and the water receiving percentage data under different longitudinal slopes and water flows are shown in the following table.
Under the same conditions, a rain grate with a flow guiding slope of 400mm multiplied by 700mm is not arranged, and through an indoor hydraulics test, the water receiving percentage data under different longitudinal slopes and water flows are shown in the following table. In addition, the flow guiding slope increasing material amount of the anti-overflow type rain grate is only 4.9% of that of the traditional rain grate.
Through an indoor hydraulics test, the water yield of the traditional rain water grate without the diversion slope is greatly increased under different longitudinal slopes and water flows and the water yield percentage is higher than that of the traditional rain water grate without the diversion slope under the same conditions.
The overflow-preventing and anti-clogging rain grate provided by the invention has a very good overflow-preventing effect, and takes a 400mm multiplied by 500mm rain grate as an example, even if the water flow is 20L/s and the longitudinal slope is 20%, the water yield can reach 90%, compared with the water yield of the grate without a diversion slope under the same condition which is only 40.17%, the water yield of the rain grate is increased by 49.83% compared with the water yield of the traditional rain grate. Taking 400mm multiplied by 700mm rain grate as an example, the water yield can reach 94.69% even if the water flow is 20L/s and the longitudinal slope is 20%, and compared with the water yield of the grate without a diversion slope under the same condition, the water yield of the rain grate is only 48.87%, and the water yield of the rain grate is increased by 45.82% compared with the traditional rain grate. The overflow-preventing and anti-clogging rain grate has better overflow-preventing effect under the condition of larger water flow or longitudinal slope, is very suitable for urban waterlogging rain grate water collection in a storm period and large longitudinal slope road rain grate water collection, and achieves the overflow-preventing effect which is not intended.
The comprehensive observation shows that the overflow-preventing and anti-clogging rain grate provided by the invention can realize the increase of water yield close to 50% by only increasing 4.9% -7.3% of the material consumption through additionally arranging the diversion slope, has remarkable overflow-preventing effect and achieves the technical effect of being not intended.
In fact, the diversion slope in the embodiment of the invention can be applied to a rainwater well lid, various water inlet cover plates and the like, and belongs to the protection scope of the invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The overflow-preventing and silt-blocking-resisting rain water grate is characterized by comprising the following two parts: a longitudinal grate system, a latitudinal grate system and a diversion slope;
the longitudinal grate system and the latitudinal grate system are hollow rainwater grate systems formed by the longitudinal grate and the latitudinal grate which are mutually perpendicular;
the flow guiding slope is a downward fold-line-shaped plate or an arc-shaped plate between the grates starting from the water inlet side of the warp-weft grate system, and the included angle between the whole linear shape of the flow guiding slope and the horizontal plane is from small to large from the water inlet end;
the working mechanism of the anti-overflow anti-clogging rain water grate is as follows:
a diversion slope is additionally arranged to provide a downward inclined diversion surface, and when water flows into the rainwater grate, the water flow of the free falling body impacts the diversion slope, and an air layer is formed between an impact line and a water flow free falling body starting line;
air with closed air layer moves downwards under the guidance of water flow, and the air layer becomes vacuum state;
the vacuum state forms negative pressure, and the negative pressure is expressed as that the diversion slope generates huge attraction to water flow, so that the diversion slope is highly sticky;
the vacuum state is continuously maintained by the water flow, the diversion slope always maintains a highly viscous water state, and the overflow of the rainwater grate is prevented;
the longitudinal grate is perpendicular to the water inlet and is arranged along the water flow direction, and the latitudinal grate is perpendicular to the longitudinal grate;
the flow guiding slope is arranged between the warp-wise grate bars, and the two ends of the flow guiding slope are fully adhered to the downward fold-line plates or the arc plates of the warp-wise grate bars, and the flow guiding slope is in no contact with the space of the weft-wise grate bars;
the warp-wise grate adopts a plate shape, and the weft-wise grate adopts a strip shape;
the interval between 1 to a plurality of latitudinal grate bars at the upper part of the diversion slope is enlarged;
for a two-way water inlet rainwater grate, a flow guiding slope which is the same as that among the warp-wise grate bars is arranged among the weft-wise grate bars, the flow guiding slope structure of the weft-wise grate bars is the same as that of the warp-wise grate bar structure, and the interval between 1 to a plurality of warp-wise grate bars at the upper part of the flow guiding slope is increased;
the first-channel weft-wise grate on the water inlet side is arranged to be projected downwards to be out of two thirds of the total length in the plane of the diversion slope, and the first-channel warp-wise grate on the water inlet side is arranged to be projected downwards to be out of two thirds of the total length in the plane of the diversion slope;
the part from the beginning end to the end of the diversion slope is a diversion slope beginning line and a diversion slope second level line, the included angle between the diversion slope beginning line and the horizontal plane is 10-25 degrees, and the included angle between the diversion slope second level line and the horizontal plane is 25-45 degrees.
2. The flow-through and clogging-resistant rain grate of claim 1, wherein: the lines in the initial line of the diversion slope and the second level line of the diversion slope are straight lines or arc tangent lines.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210420454.9A CN114718176B (en) | 2022-04-21 | 2022-04-21 | Anti-overflow anti-clogging rain grate and working mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210420454.9A CN114718176B (en) | 2022-04-21 | 2022-04-21 | Anti-overflow anti-clogging rain grate and working mechanism thereof |
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| Publication Number | Publication Date |
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| CN114718176A CN114718176A (en) | 2022-07-08 |
| CN114718176B true CN114718176B (en) | 2023-08-22 |
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| US6294095B1 (en) * | 2000-04-24 | 2001-09-25 | Erosion Control Services, Inc. | Silt filtration system |
| CN206971356U (en) * | 2017-06-22 | 2018-02-06 | 重庆市市政设计研究院 | Rain perforaled strainer for heavy grade road drainage |
| CN107724507A (en) * | 2017-11-07 | 2018-02-23 | 北京建筑大学 | A kind of gutter inlet device |
| CN207812639U (en) * | 2018-01-31 | 2018-09-04 | 厦门精一诚金属制品有限公司 | A kind of collection hair floor drain |
| CN211114018U (en) * | 2019-08-14 | 2020-07-28 | 山东鲁润塑业股份有限公司 | Water grate |
| CN214090254U (en) * | 2020-07-02 | 2021-08-31 | 赵志宏 | Municipal works road drainage structures |
| CN214573024U (en) * | 2021-03-17 | 2021-11-02 | 贵州省交通规划勘察设计研究院股份有限公司 | Highway subgrade water-proof and drainage system of water system development low-lying section |
| CN216041641U (en) * | 2021-08-17 | 2022-03-15 | 国网浙江余姚市供电有限公司 | Intelligent drainage well cover |
-
2022
- 2022-04-21 CN CN202210420454.9A patent/CN114718176B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6294095B1 (en) * | 2000-04-24 | 2001-09-25 | Erosion Control Services, Inc. | Silt filtration system |
| CN206971356U (en) * | 2017-06-22 | 2018-02-06 | 重庆市市政设计研究院 | Rain perforaled strainer for heavy grade road drainage |
| CN107724507A (en) * | 2017-11-07 | 2018-02-23 | 北京建筑大学 | A kind of gutter inlet device |
| CN207812639U (en) * | 2018-01-31 | 2018-09-04 | 厦门精一诚金属制品有限公司 | A kind of collection hair floor drain |
| CN211114018U (en) * | 2019-08-14 | 2020-07-28 | 山东鲁润塑业股份有限公司 | Water grate |
| CN214090254U (en) * | 2020-07-02 | 2021-08-31 | 赵志宏 | Municipal works road drainage structures |
| CN214573024U (en) * | 2021-03-17 | 2021-11-02 | 贵州省交通规划勘察设计研究院股份有限公司 | Highway subgrade water-proof and drainage system of water system development low-lying section |
| CN216041641U (en) * | 2021-08-17 | 2022-03-15 | 国网浙江余姚市供电有限公司 | Intelligent drainage well cover |
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| CN114718176A (en) | 2022-07-08 |
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