CN105056616A - Rainwater filter - Google Patents
Rainwater filter Download PDFInfo
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- CN105056616A CN105056616A CN201510418555.2A CN201510418555A CN105056616A CN 105056616 A CN105056616 A CN 105056616A CN 201510418555 A CN201510418555 A CN 201510418555A CN 105056616 A CN105056616 A CN 105056616A
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- collection tube
- central collection
- filter
- rainwater
- filtering device
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Abstract
The invention discloses a rainwater filter which comprises a supporting bottom plate and a cover plate, wherein an outer filter drum and a center collecting pipe are coaxially fixed on the supporting bottom plate; the cover plate covers the top of the outer filter drum; a center collecting pipe via hole is formed in the cover plate; a drainage opening is formed in the supporting bottom plate; the top end of the center collecting pipe penetrates out from the center collecting pipe via hole; a drainage cavity is defined by the inner side of the center collecting pipe; the bottom end of the center collecting pipe is communicated with the drainage opening; a filtering medium is arranged between the outer filter drum and the center collecting pipe; a plurality of water via holes are formed in the pipe wall of the center collecting pipe; the total areas of the water via holes in all layers are increased from bottom to top or the total areas of the water via holes in all layers are the same. According o the rainwater filter, the contact time between rainwater and the filtering medium at the lower end is prolonged, and the filtering medium at the upper end of the filter is enabled to be used fully, so that the utilization ratio of the filtering medium is increased greatly; rainwater and the filtering medium are in full contact, so that particulate matters, heavy metals, organic matters and pollutants in the rainwater are effectively removed and up-to-standard emission or recycling of the rainwater is realized.
Description
Technical field
The present invention relates to device for treating rain water, refer to a kind of rain water filtering device particularly.
Background technology
Along with the quickening of urbanization process, on ground, Permeable stratum area is increasing, pollutant builds up on these fluid-tight ground, when rainfall, pollutant is poured rainfall runoff system and forms rainwater runoff pollution by rain drop erosion ground, and rainwater runoff pollution is that a kind of diffusivity is polluted, and then enters into natural water, cause water pollution, pollutant wherein comprises the poisonous and harmful substances such as particle, organic matter, heavy metal.Therefore, urbanization process and industrialization development cause water source judgment and rain flood to endanger day by day serious.
Along with the aggravation of water source judgment and the harm of rain flood, using rainwater in addition Collection utilization carry out as water resource the emerging problem that the comprehensive regulation become important.In overall city planning, the combined drainage system great majority that the past adopts are changed a social system, change separate system into or the drainage system processed that dams.Serious along with urban atmospheric pollution and ground pollution, rainwater runoff pollution is further serious, and the early-stage rainwater that especially pollutant is more, the pollutant index peak of the early-stage rainwater of certain areas is far away higher than typical urban sanitary sewage.Therefore, be necessary to process early-stage rainwater.
China is scarcely out of swaddling-clothes to the collection process of early-stage rainwater at present, and collecting early-stage rainwater is only do not allow it enter water pollution water quality, and then seldom consider for the purified treatment of early-stage rainwater and reuse, majority directly enters municipal sanitary sewage pipe network.The pollutant levels contained in early-stage rainwater are higher, especially road early-stage rainwater, directly enter sanitary sewage pipe network and can bring larger load to Sewage Plant.
Summary of the invention
Object of the present invention will provide a kind of rain water filtering device exactly, and this filter significantly can reduce the pollutant load in early-stage rainwater, realizes rainwater qualified discharge or reuse, and filtration device structure is simple, easy for installation.
For achieving the above object, the technical solution used in the present invention is: a kind of rain water filtering device, comprise support baseboard and cover plate, described support baseboard is coaxially fixed with outer cartridge filter and central collection tube, described cover plate is covered in described outer cartridge filter top, described cover plate has central collection tube via hole, described support baseboard has discharge outlet, described central collection tube top penetrates described central collection tube via hole, draining cavity is surrounded inside described central collection tube, described central collection tube bottom is communicated with described discharge outlet, filter medium is provided with between described outer cartridge filter and central collection tube, described central collection tube wall has some water holes, and each layer described water hole gross area increases progressively or equal from the bottom up.
The present invention utilizes screen pack and multiple layer filter media to carry out multi-filtering to rainwater, and by ingenious arrangement water hole in central collection tube, the perforate gross area of the water hole on central collection tube wall increases progressively from lower floor toward upper strata or equal, when the water level of filter outside is lower, rainwater enters central collection tube from the bottom of filter, because the central collection tube lower floor water hole gross area is little, limit the rainwater flow entering central collection tube to a certain extent, outside rainwater water level is made to increase, so not only extend the time of contact of rainwater and lower end filter medium, also the filter medium of filter upper end is made to be fully utilized, thus significantly improve the utilization rate of filter medium, extend the time of contact of rainwater and filter medium, rainwater and filter medium is made to have sufficient contact, effectively can remove the particle in rainwater, the pollutant such as heavy metal and organic matter, realize the qualified discharge of rainwater or reuse (when the perforate gross area of the water hole on each layer central collection tube wall is equal, also can ensure that upper level filter medium is fully utilized by restriction discharge outlet flow), when filter does not work, external source can enter draining cavity by central collection tube top and carry out back flush to filter medium, the pollutant that filter medium retains can be gone out filter by back flush effect, improves the penetrating power of filter medium, when filter normally works, central collection tube open top can also play the effect of overflow collection mouth, when rainfall is very large, rainwater directly can enter draining cavity from central collection tube open top, ensures the normal work of filter, this filter, without the need to exterior power, can run automatically, and structure is simple, it is easy, easy for installation, with low cost to make.
Further, the aperture of the described water hole on described central collection tube wall is consistent, and the described water hole quantity of each layer increases progressively from the bottom up.
Further, the pore size of the described water hole on described central collection tube wall differs, and the described water hole gross area of each layer increases progressively from the bottom up.
Further, be coaxially fixed with outer screen pack and filtering net successively from outside to inside between described outer cartridge filter and central collection tube, described filter medium is placed between described outer screen pack and described filtering net.
Further, described filter medium is graininess, and its grain diameter is greater than the mesh aperture of described outer screen pack and described filtering net respectively.
Further, the grain diameter of the described filter medium in outside is greater than the grain diameter of the described filter medium of inner side.
Further, described discharge outlet is connected with drainpipe, described drainpipe is provided with excess-flow valve.Be provided with excess-flow valve in the downstream of drainpipe, rainwater and filter medium can be made to have sufficient contact by the flow that restricts export, reach the object effectively removing pollutant; Simultaneously because rate of discharge is limited, water level raises, and whole filtering medium layer can be fully utilized, thus improve the utilization rate of filter medium further.
Further, described central collection tube top seal or be provided with openable overflow collection mouth filter screen.When rainfall is very large, rainwater can enter draining cavity by the overflow collection mouth filter screen directly through central collection tube top, not only can improve the rainwater flow by filter, and overflow collection mouth filter screen can retain floating thing in rainwater and suspension, promote the filter effect of filter.
Further, described outer cartridge filter, described outer screen pack and described filtering net are cylinder, square tube or polygon net tubular.
Further, described central collection tube is pipe, square tube or polygon tubulose.
Accompanying drawing explanation
Fig. 1 is a kind of sectional structure schematic diagram of rain water filtering device.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, is convenient to more clearly understand the present invention, but they do not form restriction to the present invention.
Rain water filtering device as shown in Figure 1, comprise support baseboard 101 and cover plate 102, support baseboard 101 and cover plate 102 all waterproof, support baseboard 101 is coaxially fixed with outer cartridge filter 103, outer screen pack 107, filtering net 108 and central collection tube 104 from outside to inside successively, and aforementioned each structural member is made by resistant material, filter medium 106 is laid between outer screen pack 107 and filtering net 108, cover plate 102 is covered in outer cartridge filter 103, the top of outer screen pack 107 and filtering net 108, cover plate 102 can be dismantled, when pulling down cover plate 102, filter medium 106 can be changed, cover plate 102 has central collection tube via hole 102-1, support baseboard 101 center has discharge outlet 101-1, central collection tube 104 top penetrates central collection tube via hole 102-1, that is: central collection tube 104 top can pass central collection tube via hole 102-1, also level can be kept with central collection tube via hole 102-1, draining cavity 105 is surrounded inside central collection tube 104, central collection tube 104 bottom is communicated with discharge outlet 101-1, discharge outlet 101-1 is connected with drainpipe 109, drainpipe 109 is provided with excess-flow valve 110, central collection tube 104 tube wall has some water hole 104-1, each layer water hole 104-1 gross area increases progressively or equal from the bottom up, wherein, the pore size of the water hole 104-1 on central collection tube 104 tube wall can be different, also can aperture consistent, when water hole 104-1 pore size on central collection tube 104 tube wall is consistent, each layer water hole 104-1 quantity increases progressively from the bottom up, central collection tube 104 top is provided with openable overflow collection mouth filter screen 111.Wherein, outer cartridge filter 103, outer screen pack 107 and filtering net 108 can be cylinder, square tube or polygon net tubular; Central collection tube 104 can be pipe, square tube or polygon tubulose; This rain water filtering device can save outer screen pack 103 and filtering net 108, and in this case, the central collection tube via hole 102-1 in outer cartridge filter 103 and central collection tube 104 will ensure that filter medium 106 can not pass outer cartridge filter 103 and central collection tube 104.
In such scheme, filter medium 106 is in graininess, can be made up of one or more in compost, vermiculite, perlite, sand, zeolite, peat etc., also can be made up of the material of made multi-pore channel such as active carbon and ion-exchanger, its grain diameter is greater than the mesh aperture of outer screen pack 107 and filtering net 108 respectively, to ensure that filter medium 106 can not spill between outer screen pack 107 and filtering net 108; When filter medium 106 adopts multiple material, filter medium 106 can be divided into multilayer in the horizontal direction by variety classes and different-grain diameter, and the grain diameter near the filter medium 106 of outer screen pack 107 side is larger than the filter medium 106 grain diameter particle diameter of close filtering net 108 side.
The course of work of above-mentioned rain water filtering device is as follows: during the work of filter normal filtration, rainwater enters filter medium 106 through outer cartridge filter 103 and outer screen pack 107 successively from filter outside, the water hole 104-1 of rainwater after filtration after media filtration more successively on filtering net 108 and central collection tube 104 enters draining cavity 105, discharged by drainpipe 109 again in rainwater after processing after filtration in draining cavity 105, wherein, the perforate gross area of the water hole 104-1 on central collection tube 104 tube wall increases progressively from lower floor toward upper strata or equal, when the water level of filter outside is lower, rainwater enters central collection tube 104 from the bottom of filter, because the central collection tube lower floor water hole 104-1 gross area is little, limit the rainwater flow entering central collection tube 104 to a certain extent, outside rainwater water level is made to increase, the filter medium of such filter upper end just can be fully utilized, meanwhile, be provided with excess-flow valve 110 in the downstream of drainpipe 109, rainwater can be made to have sufficient contact with filter medium 106 by the flow that restricts export, reach the object effectively removing pollutant, along with the continuous rising of water level, when the water level of filter outside reaches the top of central collection tube 104, later stage rainwater just enters draining cavity 105 (when rainfall is very large in the direct top from central collection tube 104, the top of central collection tube 104 also can be used as overflow collection mouth, rainwater directly enters draining cavity 105 from the top of central collection tube 104), the overflow collection mouth filter screen 111 at central collection tube 104 top can retain floating thing in rainwater and suspension, whole filter process not only ensure that fully contacting of rainwater and filter medium 106, effectively can remove the pollutant in rainwater, also ensure that the treatment effeciency of filter, after dmp filter processing procedure terminates, filter medium 106 can block by contaminated thing to a certain extent, take off openable overflow collection mouth filter screen 111, and close excess-flow valve 110, filter is rinsed from central collection tube 104 top with external source, the pollutant retained in filter medium 106 can be gone out filter, improve the penetrating power of filter medium 106.
This filter can multiplely in vertical direction superpose, and forms a large filter, to adapt to the rainwater treatment demand compared with deep water level.
Claims (10)
1. a rain water filtering device, comprise support baseboard (101) and cover plate (102), it is characterized in that: described support baseboard (101) is coaxially fixed with outer cartridge filter (103) and central collection tube (104), described cover plate (102) is covered in described outer cartridge filter (103) top, described cover plate (102) has central collection tube via hole (102-1), described support baseboard (101) has discharge outlet (101-1), described central collection tube (104) top penetrates described central collection tube via hole (102-1), described central collection tube (104) inner side surrounds draining cavity (105), described central collection tube (104) bottom is communicated with described discharge outlet (101-1), filter medium (106) is provided with between described outer cartridge filter (103) and central collection tube (104), described central collection tube (104) tube wall has some water holes (104-1), and the described water hole of each layer (104-1) gross area increases progressively or equal from the bottom up.
2. rain water filtering device according to claim 1, it is characterized in that: the aperture of the described water hole (104-1) on described central collection tube (104) tube wall is consistent, and the described water hole of each layer (104-1) quantity increases progressively from the bottom up.
3. rain water filtering device according to claim 1, it is characterized in that: the pore size of the described water hole (104-1) on described central collection tube (104) tube wall differs, and the described water hole of each layer (104-1) gross area increases progressively from the bottom up.
4. rain water filtering device according to claim 1, it is characterized in that: be coaxially fixed with outer screen pack (107) and filtering net (108) from outside to inside successively between described outer cartridge filter (103) and central collection tube (104), described filter medium (106) is placed between described outer screen pack (107) and described filtering net (108).
5. rain water filtering device according to claim 4, it is characterized in that: described filter medium (106) is in graininess, and its grain diameter is greater than the mesh aperture of described outer screen pack (107) and described filtering net (108) respectively.
6. rain water filtering device according to claim 1 or 5, is characterized in that: the grain diameter of the described filter medium (106) in outside is greater than the grain diameter of the described filter medium (106) of inner side.
7. rain water filtering device according to claim 1, is characterized in that: described discharge outlet (101-1) is connected with drainpipe (109), and described drainpipe (109) is provided with excess-flow valve (110).
8. rain water filtering device according to claim 1, is characterized in that: described central collection tube (104) top seal or be provided with openable overflow collection mouth filter screen (111).
9. rain water filtering device according to claim 1, is characterized in that: described outer cartridge filter (103), described outer screen pack (107) and described filtering net (108) in cylinder, square tube or polygon net tubular.
10. rain water filtering device according to claim 1, is characterized in that: described central collection tube (104) in pipe, square tube or polygon tubulose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418555.2A CN105056616B (en) | 2015-07-16 | 2015-07-16 | Rain water filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418555.2A CN105056616B (en) | 2015-07-16 | 2015-07-16 | Rain water filtering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105056616A true CN105056616A (en) | 2015-11-18 |
| CN105056616B CN105056616B (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510418555.2A Active CN105056616B (en) | 2015-07-16 | 2015-07-16 | Rain water filtering device |
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| Country | Link |
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| CN (1) | CN105056616B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435495A (en) * | 2015-12-02 | 2016-03-30 | 武汉圣禹排水系统有限公司 | Efficient rainwater filter |
| CN105498334A (en) * | 2016-01-26 | 2016-04-20 | 武汉美华禹水环境有限公司 | Fast-assembly multistage treatment rainwater filter |
| CN106904759A (en) * | 2017-03-29 | 2017-06-30 | 广东亘盈环保实业集团有限公司 | A kind of urban rainwater processing unit |
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| CN2286645Y (en) * | 1997-01-29 | 1998-07-29 | 何子冀 | Multi-stage fine-filtering device |
| WO2008156657A1 (en) * | 2007-06-14 | 2008-12-24 | Stanadyne Corporation | Filter assembly center tube with upstream diverter |
| KR100943022B1 (en) * | 2009-09-14 | 2010-02-18 | 이영수 | A sanitation facilities of first fall rain water using filter cartridge |
| CN101658738A (en) * | 2009-09-14 | 2010-03-03 | 焦保安 | Fine filtering decolorizer and fine filtering decolorizing device of oil filter |
| CN102512872A (en) * | 2011-12-20 | 2012-06-27 | 北京建筑工程学院 | High speed on-line vertical rainwater filter |
| CN204865234U (en) * | 2015-07-16 | 2015-12-16 | 武汉圣禹排水系统有限公司 | Rain water filtering device |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2286645Y (en) * | 1997-01-29 | 1998-07-29 | 何子冀 | Multi-stage fine-filtering device |
| WO2008156657A1 (en) * | 2007-06-14 | 2008-12-24 | Stanadyne Corporation | Filter assembly center tube with upstream diverter |
| KR100943022B1 (en) * | 2009-09-14 | 2010-02-18 | 이영수 | A sanitation facilities of first fall rain water using filter cartridge |
| CN101658738A (en) * | 2009-09-14 | 2010-03-03 | 焦保安 | Fine filtering decolorizer and fine filtering decolorizing device of oil filter |
| CN102512872A (en) * | 2011-12-20 | 2012-06-27 | 北京建筑工程学院 | High speed on-line vertical rainwater filter |
| CN204865234U (en) * | 2015-07-16 | 2015-12-16 | 武汉圣禹排水系统有限公司 | Rain water filtering device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105435495A (en) * | 2015-12-02 | 2016-03-30 | 武汉圣禹排水系统有限公司 | Efficient rainwater filter |
| CN105498334A (en) * | 2016-01-26 | 2016-04-20 | 武汉美华禹水环境有限公司 | Fast-assembly multistage treatment rainwater filter |
| CN106904759A (en) * | 2017-03-29 | 2017-06-30 | 广东亘盈环保实业集团有限公司 | A kind of urban rainwater processing unit |
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| Publication number | Publication date |
|---|---|
| CN105056616B (en) | 2018-01-12 |
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Effective date of registration: 20160427 Address after: 430056 No. 189, North Road, Wuhan economic and Technological Development Zone, Hubei Applicant after: WUHAN MEIHUA YUSHUI ENVIRONMENT Co.,Ltd. Address before: 430056 Hubei city of Wuhan province Wuhan economic and Technological Development Zone Science and Technology Industrial Park Yang Dun Applicant before: WUHAN SHENGYU DRAINAGE SYSTEM Co.,Ltd. |
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Effective date of registration: 20231228 Address after: No. 509 Weihu Road, Shamao Street, Hannan District, Wuhan City, Hubei Province, 430090 Patentee after: Wuhan Shengyu Smart Ecological Environmental Protection Co.,Ltd. Address before: No. 189 Quanli North Road, Wuhan Economic and Technological Development Zone, Hubei Province, 430056 Patentee before: WUHAN MEIHUA YUSHUI ENVIRONMENT Co.,Ltd. |
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