CN112337162A - Rainwater filtering device and road gutter inlet - Google Patents
Rainwater filtering device and road gutter inlet Download PDFInfo
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- CN112337162A CN112337162A CN202011170743.5A CN202011170743A CN112337162A CN 112337162 A CN112337162 A CN 112337162A CN 202011170743 A CN202011170743 A CN 202011170743A CN 112337162 A CN112337162 A CN 112337162A
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- 238000001914 filtration Methods 0.000 title claims abstract description 166
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 239000000178 monomer Substances 0.000 claims abstract description 21
- 239000004744 fabric Substances 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 21
- 230000000903 blocking effect Effects 0.000 claims description 3
- 101100366940 Mus musculus Stom gene Proteins 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000010419 fine particle Substances 0.000 description 18
- 239000003344 environmental pollutant Substances 0.000 description 11
- 231100000719 pollutant Toxicity 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000008239 natural water Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
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Abstract
The application provides a rainwater filter equipment and road inlet for stom water relates to city construction supporting facility spare technical field, can filter the tiny granule of rainwater in, improves city rainfall runoff non-point source pollution problem. Comprises filtering the monomer; the filtering single body comprises an inner cylinder and an outer cylinder; the top end of the inner barrel is provided with a stopper for stopping rainwater from entering the inner barrel from the top end of the inner barrel, the bottom end of the inner barrel is provided with a water outlet, and the peripheral side wall of the inner barrel is provided with a plurality of first filtering holes; the top end of the outer barrel is provided with a water inlet, the inner barrel penetrates through the water inlet from top to bottom and is arranged in the outer barrel, and the central axis of the inner barrel is superposed with the central axis of the outer barrel; a cavity is formed between the inner barrel and the outer barrel, and a plurality of second filtering holes are formed in the bottom end of the cavity.
Description
Technical Field
The application relates to the technical field of urban construction supporting facilities, in particular to a rainwater filtering device and a road gutter inlet.
Background
Along with the acceleration of the urbanization process, the urban pavement hardening rate is continuously improved, the runoff of rainwater is increased, fine particles in rainwater are discharged into a natural water body along with the rainwater, and various pollutants attached to the natural water body form surface source pollution.
For example, N (nitrogen), P (phosphorus), organic matters and heavy metals in the atmosphere, roofs and ground environments are attached to particles and then enter natural water bodies along with rainwater scouring, and since a shunt drainage system is implemented in most cities at present, rainwater is directly discharged to water bodies nearby the cities without treatment, so that urban water bodies are polluted.
Therefore, how to reasonably and effectively filter most of particulate matters and sundries in rainwater, and further relieve urban runoff pollution becomes a problem to be solved urgently.
Disclosure of Invention
The embodiment of the application provides a rainwater filter equipment and road inlet for stom water can filter most fine particles and debris in the rainwater, alleviates urban runoff and pollutes.
A first aspect of embodiments of the present application provides a rainwater filtering apparatus, including: filtering the monomer;
the filtering single body comprises an inner cylinder and an outer cylinder;
the top end of the inner barrel is provided with a stopper for stopping rainwater from entering the inner barrel from the top end of the inner barrel, the bottom end of the inner barrel is provided with a water outlet, and the peripheral side wall of the inner barrel is provided with a plurality of first filtering holes;
the top end of the outer barrel is provided with a water inlet, the inner barrel penetrates through the water inlet from top to bottom and is arranged in the outer barrel, and the central axis of the inner barrel is superposed with the central axis of the outer barrel;
a cavity is formed between the inner barrel and the outer barrel, and a plurality of second filtering holes are formed in the bottom end of the cavity.
Optionally, the blocking piece is a semi-closed groove body, the groove body is buckled at the top end of the inner cylinder in an inverted mode, the opening end of the groove body is downward vertically along the axial direction of the inner cylinder, and the inner cavity of the inner cylinder is communicated with the cavity.
Optionally, the filtering unit further comprises a plurality of first flaps and a plurality of second flaps;
the first folded plate is sleeved outside the inner barrel, the inner end face of the first folded plate is fixed with the outer barrel wall of the inner barrel, the outer end face of the first folded plate is a free end, and a gap is formed between the outer end face of the first folded plate and the peripheral inner wall of the outer barrel;
the plate surface of the second folded plate is hollow to form an inner end surface and an outer end surface, the outer end surface of the second folded plate is fixed with the peripheral inner wall of the outer barrel, the inner end surface of the second folded plate is a free end, and a gap is formed between the inner end surface of the second folded plate and the peripheral outer wall of the inner barrel;
the first folded plate and the second folded plate are arranged along the axial direction of the inner cylinder in a staggered and spaced mode.
Optionally, a third filtering hole is formed in the top surface of the first folding plate and is connected to the inner cylinder.
Optionally, a plurality of layers of water-permeable filter cloth are arranged on the first folding plate.
Optionally, the side wall of the periphery of the inner cylinder is wrapped with a plurality of layers of permeable filter cloth; and the bottom end of the cavity is provided with a plurality of layers of permeable filter cloth.
Optionally, the filtering units are arranged in a plurality of arrays and combined into a whole.
Optionally, at least one side wall of the filtering single body is provided with a communicating hole;
the communication hole of any filtering single body is communicated with the communication hole of the adjacent filtering single body.
Optionally, the rainwater filtering device further comprises a rainwater outflow part;
the rainwater outflow part is arranged at the bottom of the filtering single body and is communicated with the water outlet of the filtering single body and the second filtering hole; and a pipeline connecting port for connecting a rainwater pipeline is arranged at the bottom of the rainwater outflow part.
The second aspect of the embodiment of the application provides a road inlet for stom water, road inlet for stom water includes the rainwater grate, and is located the rainwater grate lower extreme the first aspect of the embodiment of the application the rainwater filter equipment.
The filtering monomer provided by the embodiment of the application comprises an inner cylinder and an outer cylinder, an annular cavity is formed between the inner cylinder and the outer cylinder, holes are uniformly formed in the peripheral side wall of the inner cylinder and the bottom of the cavity to form a first filtering hole in the peripheral side wall of the inner cylinder and a second filtering hole in the bottom of the cavity, and compared with a flat filter screen structure, the filtering monomer of a double-layer sleeve type structure formed by the inner cylinder and the outer cylinder has the advantages that the filtering area is increased by multiple times, and the filtering area for rainwater is effectively increased; and the first filtering holes and the second filtering holes are wrapped with multiple layers of permeable filter cloth, fine particle pollutants in rainwater are intercepted through the multiple layers of permeable filter cloth, the content of fine particles and impurities in the rainwater is reduced through the physical filtering effect of the multiple layers of permeable filter cloth, and non-point source pollution caused by urban runoff is relieved.
The application provides a rainwater filter equipment's unit formula structure (a plurality of filtration monomers are filtered the rainwater respectively) and first folded plate and the second folded plate of crisscross setting can bear stronger rivers impact force in the filtration monomer, are favorable to increasing effective filtration area, reduce filter speed, improve the interception effect to the fine particle. Simultaneously, because this application wraps up in the multilayer filter cloth that permeates water of first filtration pore outward, consequently the rainwater filter equipment's that this application embodiment provided most filter area is placed perpendicularly, is difficult for blockking up.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural view of a filter cell in an embodiment of the present application;
FIG. 2 is a schematic longitudinal section of a filter unit in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a rainwater filtering apparatus according to an embodiment of the present application;
FIG. 4 is a schematic view of the flow direction of rainwater through the filtering unit in the embodiment of the present application at a small flow rate;
fig. 5 is a schematic view of the flow direction of rainwater through the filtering unit in the embodiment of the present application at a large flow rate.
Reference numerals: a rainwater filtering device-1; filtering the monomer-11; an inner cylinder-111; an outer barrel-112; a stopper-113; a water outlet-114; a first filtering aperture-115; a water inlet-116; a second filtering hole-117; a first flap-118; a second flap-119; a rainwater outflow part-2; a plurality of layers of permeable filter cloth-3.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present invention, it is to be understood that the terms "bottom", "top", "upper", "lower", "side", and the like, indicate orientations or positional relationships for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
The urban rainwater drainage system is an engineering facility system for treating and removing urban rainwater, and is a component of urban construction supporting facilities. Urban rainwater drainage systems generally consist of drainage pipes and gullies arranged on both sides of the road.
Rainwater is collected through a road rainwater port, flows into a drainage pipeline and then flows into natural water bodies (rivers, ditches and the like) from the drainage pipeline. Traditional road inlet for stom water filters the impurity in the rainwater through the rainwater grate, but traditional rainwater grate can only filter filth and debris such as branch, leaf, plastic bag because the aperture is great, and the tiny particle that has a large amount of pollutants attached to is difficult to hold back. Therefore, a large amount of fine particles (carrying nitrogen and phosphorus pollutants and the like) enter the natural water body along with the rainwater runoff, so that the natural water body is polluted, and the treatment difficulty is high. Meanwhile, the lower filter screen of the rainwater grate is in a flat type, the filtering area is small, the rainwater impact resistance is weak, the filtering effect is weak, and the maintenance cost is high.
In view of the above problem, the embodiment of the application provides a rainwater filter equipment, set up inside the road inlet for stom water, road inlet for stom water upper end opening, rainwater grate covers the upper end opening, and rainwater filter equipment is located rainwater grate lower extreme, and the rainwater filters branch, leaf, great debris such as plastic bag through rainwater grate inflow filter equipment, filters, and rainwater filter equipment is used for filtering the tiny granule in the rainwater, improves urban rainwater runoff surface source pollution problem.
The rainwater filter equipment that this application embodiment provided includes filters monomer 11, and fig. 1 is the structure schematic diagram of filtering monomer in this application embodiment, and as shown in fig. 1: the filtering unit 11 comprises an inner cylinder 111 and an outer cylinder 112;
the top end of the inner cylinder 111 is provided with a stopper 113, the stopper 113 is used for stopping rainwater from entering the inner cylinder 111 from the top end of the inner cylinder 111, the bottom end of the inner cylinder 111 is provided with a water outlet 114, and the peripheral side wall of the inner cylinder 111 is provided with a plurality of first filtering holes 115;
the inner cylinder 111 can be regarded as a bowl-buckled structure, the upper end of the inner cylinder is closed by a stopper 113, the lower end of the inner cylinder is opened, and the opening with the opened lower end is the water outlet 114.
A water inlet 116 is formed in the top end of the outer cylinder 112, the inner cylinder 111 penetrates through the water inlet 116 from top to bottom and is arranged in the outer cylinder 112, and the central axis of the inner cylinder 111 is overlapped with that of the outer cylinder 112;
the inner cylinder 111 is arranged inside the outer cylinder 112 to form a double-layer sleeve type structure, and an annular space is formed between the outer side surface of the inner cylinder 111 and the inner side surface of the outer cylinder 112. A chamber is formed between the inner cylinder 111 and the outer cylinder 112, and a plurality of second filtering holes 117 are formed at the bottom end of the chamber. The chamber may mean a space formed in an annular shape between an outer surface of the inner cylinder 111 and an inner surface of the outer cylinder 112.
The first filtering holes are uniform holes on the peripheral side wall of the inner cylinder 111, and the second filtering holes are uniform holes at the bottom of the chamber.
Rainwater with larger impurities is filtered by the rainwater grate and flows into the filtering single body 11 through the water inlet 116 of the filtering single body 11, the rainwater directly flows into a cavity formed between the inner cylinder 111 and the outer cylinder 112 due to the stopper 113 arranged at the upper end of the inner cylinder 111, and the rainwater flows out of the filtering single body 11 after filtering fine particles in the rainwater through the second filtering holes 117 at the bottom of the cavity, so that filtering is completed; meanwhile, rainwater can also flow into the inner barrel 111 through the first filtering holes 115, and fine particles in the rainwater are filtered through the first filtering holes 115 on the peripheral side wall of the inner barrel 111 and then flow out of the filtering unit 11 from the water outlet 114.
The filtering area of the filtering unit 11 for filtering the rainwater includes: the bottom area of the annular chamber formed between the inner cylinder 111 and the outer cylinder 112, and the surface area of the peripheral sidewall of the inner cylinder 111, so that the single filter unit 11 has a large rainwater filtering area.
Fig. 2 is a schematic longitudinal sectional view of a filtering unit in an embodiment of the present application, and as shown in fig. 2, in another embodiment of the present application, a stopper 113 is a semi-closed groove body, the groove body is reversely buckled at the top end of the inner cylinder 111, an open end of the groove body vertically faces downwards along the axial direction of the inner cylinder 111, and an inner cavity of the inner cylinder 111 is communicated with the chamber.
The semi-closed groove body reversely buckled at the top end of the inner cylinder 111 can be regarded as a buckling bowl structure, namely, the semi-closed stopper 113 has a downward opening and a closed upper end. Because the inner cavity of the inner cylinder 111 is communicated with the cavity by the opening end of the stopper 113, when large-flow rainwater overflows to the center of the inner cylinder 111, a siphon effect can be formed, the rainwater flows into the center of the inner cylinder 111 at an accelerated speed, and the filtering single bodies 11 are discharged through the water outlet 114 of the inner cylinder 111, so that the rainwater can be discharged quickly during heavy rain.
With continued reference to fig. 1 and 2, in another embodiment of the present application, the filter cell 11 further comprises a plurality of first flaps 118 and a plurality of second flaps 119;
the first folded plate 118 is hollow in plate surface to form an inner end surface and an outer end surface, the first folded plate 118 is sleeved outside the inner cylinder 111, the inner end surface of the first folded plate is fixed with the outer cylinder wall of the inner cylinder 111, the outer end surface of the first folded plate 111 is a free end, and a gap is formed between the outer end surface of the first folded plate 111 and the inner wall of the periphery of the outer cylinder 112;
the second folded plate 119 is hollow in plate surface to form an inner end surface and an outer end surface, the outer end surface of the second folded plate 119 is fixed to the inner wall of the periphery of the outer cylinder 112, the inner end surface of the second folded plate 119 is a free end, and a gap is formed between the inner end surface of the second folded plate 119 and the outer wall of the periphery of the inner cylinder 111;
the first folding plate 118 and the second folding plate 119 are alternately arranged along the axial direction of the inner cylinder 111.
The first folded plate 118 and the second folded plate 119 which are arranged in the filtering single body 11 in a staggered mode can increase the water flow contact when the inner barrel 111 and the bottom of the cavity are used for filtering rainwater, reduce the water flow speed and reduce the scouring of intercepted particles.
In another embodiment of the present application, the first folding plate 118 is provided with a third filtering hole, and the first folding plate 118 is provided with a plurality of layers of water-permeable filtering cloth 3. Similar to the multi-layered water-permeable filter cloth 3 wrapped around the first filter holes 115, the multi-layered water-permeable filter cloth 3 located at the first folded plate 118 is wrapped around the third filter holes. The contact area of water flow and the permeable filter cloth can be increased, and the capability of the filtering monomer 11 for filtering fine particle pollutants is improved.
In another embodiment of the present application, the rainwater filtering apparatus further includes a rainwater outflow portion 2; the rainwater outflow part 2 is arranged at the bottom of the filtering single body 11 and is communicated with the water outlet 114 of the filtering single body 11 and the second filtering hole 117; and a pipeline connecting port for connecting a rainwater pipeline is arranged at the bottom of the rainwater outflow part 2.
Fig. 3 is a schematic structural diagram of a rainwater filtering device according to an embodiment of the present application. As shown in fig. 3: the rainwater filtering device may include a plurality of filtering units therein. The rainwater filtering device 1 provided by the embodiment of the application is a multi-filter cartridge type and comprises a plurality of filtering single bodies 11. The amount of the filter unit 11 can be arbitrarily adjusted according to the use requirement. Because the multi-filter cartridge formula rainwater filter equipment in this application embodiment can be formed by a plurality of filtration monomer 11 integrations, but filter monomer 11 quantity random change, the flexible operation, it is convenient, low in cost.
Further, the filtering units 11 are provided in a plurality, and the filtering units are arranged in an array and combined into a whole.
The rainwater filtering device 1 is an array formed by connecting a plurality of filtering units 11 in parallel. The rainwater filtering device 1 is formed by splicing a plurality of filtering single bodies 11 in parallel. For example, as shown in fig. 1, 6 filtering units 11 are arranged to form a box-shaped cuboid array, the cuboid array has two rows and three columns, the box-shaped cuboid array is placed at the lower end of the rainwater grate, the inner space of the road rainwater port is fully utilized, the rainwater filtering device 1 is box-shaped, the rainwater filtering device is easy to carry and clean, and the multiple filtering units 11 of the rainwater filtering device 1 are stronger in water flow impact bearing capacity compared with a filter screen.
In another example, 6 filter units 11 may be combined to form a row, which is easy to place in a relatively narrow road gutter inlet.
Because the quantity of filtering the monomer 11 can increase according to actual conditions, filter monomer 11 and carry out filterable filtration area to the rainwater and also can correspondingly increase. Therefore, compared with a filter screen which is horizontally arranged under the rainwater grate in a traditional mode, the filtering area of the rainwater filtering device 1 consisting of the filtering units 11 in the sleeve type structure is increased by several times compared with a horizontally-arranged filter screen structure.
With continued reference to fig. 2, in another embodiment of the present application, the inner cylinder 111 is wrapped with multiple layers of water-permeable filter cloth 3 on the peripheral side wall; and the bottom end of the cavity is provided with a plurality of layers of permeable filter cloth 3. The water-permeable filter cloth can be water-permeable geotextile.
The multiple layers of permeable filter cloth 3 are wrapped outside the multiple first filtering holes 115 on the peripheral side wall of the inner cylinder 111, and similarly, the multiple layers of permeable filter cloth 3 are wrapped outside the multiple second filtering holes at the bottom end of the cavity. The multi-layer permeable filter cloth 3 can intercept fine particle pollutants in rainwater.
The first filtering holes 115 used for filtering rainwater in the filtering monomer 11 are located on the peripheral side wall of the inner barrel 111, and then the multilayer permeable filter cloth 3 wrapped in the first filtering holes 11 is vertically arranged, and most of the permeable filter cloth in the filtering monomer 11 is vertically arranged and is not easy to block, so that the rainwater filtering device 1 can smoothly filter rainwater, and the filtering efficiency is high.
In another embodiment of the present application, at least one side wall of the filtering unit 11 is provided with a communication hole; the communicating holes of any filtering single body 11 are communicated with the communicating holes of the adjacent filtering single bodies.
With continued reference to fig. 3, the connection surface of the filter unit 11 to the adjacent filter unit 11 is provided with communication holes, and the communication holes may be provided at any position above, in the middle or below the connection surface, and assuming that the first filter unit 11 is adjacent to the second filter unit 11, the first filter unit 11 has a communication hole a, a communication hole B, a communication hole C, the second filter unit 11 has a communication hole D, a communication hole E, a communication hole F, the communication hole a is aligned with and communicates with the communication hole D, the communication hole B is aligned with and communicates with the communication hole E, and the communication hole C is aligned with and communicates with the communication hole F.
Air in any two adjacent filter single bodies can flow through the communication holes, and the hydraulic load of each filter single body 11 can be balanced through the communication holes.
In another embodiment of the present application, the top end of the rainwater outflow part 2 may be further connected to the bottom of an array formed by connecting the plurality of filtering single bodies 11 in parallel, and the rainwater outflow part 2 is communicated with the water outlets 114 of the filtering single bodies 11 and the plurality of second filtering holes 117 of the filtering single bodies 11; the bottom of the rainwater outflow part 2 is provided with a pipeline connecting port which is connected with a rainwater pipeline.
Rainwater flows into the rainwater filtering device 1 through the rainwater grate, is filtered by the peripheral side wall of the inner cylinder 111 in the filtering unit 11 and the water-permeable filtering cloth at the bottom of the annular chamber formed by the inner cylinder 111 and the outer cylinder 112, flows out of the bottoms of the inner cylinder 111 and the annular chamber, and then flows into a rainwater pipeline through the rainwater outflow part 2. Through the above-mentioned device that this application embodiment set up, can filter the fine particle pollutant and the debris in the rainwater for a long time, reduce urban rainwater runoff non-point source and pollute.
Fig. 4 is a schematic view of the flow direction of rainwater through the filtering unit in the embodiment of the present application at a small flow rate. Fig. 5 is a schematic view of the flow direction of rainwater through the filtering unit in the embodiment of the present application at a large flow rate. As shown in fig. 4 and 5, when the amount of water is small, rainwater flows into each filtering unit 11 of the rainwater filtering device 1 through the water inlet 116, and the rainwater is dispersed by the buffering action of the first folding plate 118 and the second folding plate 119, so that a large amount of rainwater is prevented from directly flushing the bottom of the chamber, and only the filtering area of the bottom can be utilized. And because first folded plate 118 and second folded plate 119 are staggered, can cushion the rainwater that falls gradually, reduce the velocity of water flow, reduce the washing away to the particulate matter that has dammed off. When rainwater and rainwater at the bottom of the chamber flow through the first folded plate 118, both the rainwater and the rainwater can flow into the inner cylinder 111 through the first filtering holes 115, flow into the rainwater outflow part 2 through the water outlet 114 of the inner cylinder 111, flow into a natural water area through a rainwater pipeline, and intercept fine particle pollutants in the rainwater through the multi-layer water-permeable filter cloth 3 wrapped outside the first filtering holes 115; rainwater at the bottom of the chamber can also flow into the rainwater outflow part 2 through a second filtering hole 117 at the bottom of the chamber, and fine particle pollutants in the rainwater are intercepted by the multi-layer water-permeable filter cloth 3 wrapped outside the second filtering hole 117; meanwhile, the multilayer permeable filter cloth 3 wrapped outside the third filter holes increases the contact area of water flow and the filter cloth, and improves the capability of intercepting fine particle pollutants; the rainwater filter equipment that this application embodiment provided effectively intercepts most rainwater fine particles and debris through above-mentioned principle, alleviates urban runoff and pollutes, ensures the water capacity of crossing of inlet for stom water simultaneously.
When the water level of rainwater rises to the top of the inner barrel 111 in case of large water amount, the blocking piece 113 arranged at the top end of the inner barrel 111 in the 2 way is reversely buckled, so that the inner barrel and the chamber form a siphoning effect, the rainwater flows into the inner barrel 111 at an accelerated speed and flows out of the rainwater filtering device 1 through the water outlet 114, and the rainwater is discharged quickly in case of heavy rain.
The beneficial effect of this application includes:
the filtering monomer provided by the embodiment of the application comprises an inner cylinder and an outer cylinder, an annular cavity is formed between the inner cylinder and the outer cylinder, holes are uniformly formed in the peripheral side wall of the inner cylinder and the bottom of the cavity to form a first filtering hole in the peripheral side wall of the inner cylinder and a second filtering hole in the bottom of the cavity, and compared with a flat filter screen structure, the filtering monomer of a double-layer sleeve type structure formed by the inner cylinder and the outer cylinder has the advantages that the filtering area is increased by multiple times, and the filtering area for rainwater is effectively increased; and the first filtering holes and the second filtering holes are wrapped with multiple layers of permeable filter cloth, fine particle pollutants in rainwater are intercepted through the multiple layers of permeable filter cloth, the content of fine particles and impurities in the rainwater is reduced through the physical filtering effect of the multiple layers of permeable filter cloth, and non-point source pollution caused by urban runoff is relieved.
The application provides a rainwater filter equipment's unit formula structure (a plurality of filtration monomers are filtered the rainwater respectively) and first folded plate and the second folded plate of crisscross setting can bear stronger rivers impact force in the filtration monomer, are favorable to increasing effective filtration area, reduce filter speed, improve the interception effect to the fine particle. Simultaneously, because this application wraps up in the multilayer filter cloth that permeates water of first filtration pore outward, consequently the rainwater filter equipment's that this application embodiment provided most filter area is placed perpendicularly, is difficult for blockking up.
In addition, the top end of the inner barrel of the filtering monomer in the rainwater filtering device is of a buckling bowl structure (the groove body is reversely buckled at the top end of the inner barrel), a siphon effect can be formed when the flow rate is large, rainwater flows into the inner barrel with higher speed, and the rainwater is discharged quickly when rainstorm is facilitated.
A second aspect of an embodiment of the present application provides a road gutter inlet, which comprises a rainwater grate and a rainwater filtering device located at the lower end of the rainwater grate and according to any one of the above embodiments of the present application.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The rainwater filtering device and the road rainwater inlet provided by the application are introduced in detail, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. The rainwater filtering device is characterized by comprising a filtering monomer;
the filtering single body comprises an inner cylinder and an outer cylinder;
the top end of the inner barrel is provided with a stopper for stopping rainwater from entering the inner barrel from the top end of the inner barrel, the bottom end of the inner barrel is provided with a water outlet, and the peripheral side wall of the inner barrel is provided with a plurality of first filtering holes;
the top end of the outer barrel is provided with a water inlet, the inner barrel penetrates through the water inlet from top to bottom and is arranged in the outer barrel, and the central axis of the inner barrel is superposed with the central axis of the outer barrel;
a cavity is formed between the inner barrel and the outer barrel, and a plurality of second filtering holes are formed in the bottom end of the cavity.
2. A rainwater filtering device according to claim 1, wherein said blocking member is a semi-closed groove body, said groove body is reversely buckled at the top end of said inner cylinder, the open end of said groove body is vertically downward along the axial direction of said inner cylinder, and the inner cavity of said inner cylinder is communicated with said chamber.
3. The stormwater filtration device according to claim 1, wherein the filtration unit further comprises a plurality of first flaps and a plurality of second flaps;
the first folded plate is sleeved outside the inner barrel, the inner end face of the first folded plate is fixed with the outer barrel wall of the inner barrel, the outer end face of the first folded plate is a free end, and a gap is formed between the outer end face of the first folded plate and the peripheral inner wall of the outer barrel;
the plate surface of the second folded plate is hollow to form an inner end surface and an outer end surface, the outer end surface of the second folded plate is fixed with the peripheral inner wall of the outer barrel, the inner end surface of the second folded plate is a free end, and a gap is formed between the inner end surface of the second folded plate and the peripheral outer wall of the inner barrel;
the first folded plate and the second folded plate are arranged along the axial direction of the inner cylinder in a staggered and spaced mode.
4. A stormwater filtration device as claimed in claim 3, wherein the first flap is provided with a third filter aperture.
5. A rainwater filtration unit according to claim 4 wherein the first flap is provided with a plurality of layers of water-permeable filter cloth.
6. The rainwater filtering device according to claim 1, wherein the peripheral side wall of the inner cylinder is wrapped with a plurality of layers of permeable filter cloth;
and the bottom end of the cavity is provided with a plurality of layers of permeable filter cloth.
7. The rainwater filtering device according to claim 1, wherein said filtering units are provided in plurality, and said filtering units are arranged in an array and combined together.
8. A rainwater filtering device according to claim 1, wherein at least one side wall of said filtering unit is provided with a communicating hole;
the communication hole of any filtering single body is communicated with the communication hole of the adjacent filtering single body.
9. The stormwater filtration device according to claim 1, further comprising a stormwater outflow portion;
the rainwater outflow part is arranged at the bottom of the filtering single body and is communicated with the water outlet of the filtering single body and the second filtering hole;
and a pipeline connecting port for connecting a rainwater pipeline is arranged at the bottom of the rainwater outflow part.
10. A road gutter inlet comprising a rain grate and a rain filter according to any one of claims 1 to 9 at the lower end of the rain grate.
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| CN202011170743.5A CN112337162B (en) | 2020-10-28 | 2020-10-28 | Rainwater filtering device and road gutter inlet |
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| CN202011170743.5A CN112337162B (en) | 2020-10-28 | 2020-10-28 | Rainwater filtering device and road gutter inlet |
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| CN112337162A true CN112337162A (en) | 2021-02-09 |
| CN112337162B CN112337162B (en) | 2022-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113502889A (en) * | 2021-07-02 | 2021-10-15 | 武汉圣禹排水系统有限公司 | System and method for distributing roof rainwater |
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| CN112337162B (en) | 2022-01-18 |
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