CN109138135A - A kind of urban pavement rainwater is from infiltration purification PP water-storing device - Google Patents
A kind of urban pavement rainwater is from infiltration purification PP water-storing device Download PDFInfo
- Publication number
- CN109138135A CN109138135A CN201710499244.2A CN201710499244A CN109138135A CN 109138135 A CN109138135 A CN 109138135A CN 201710499244 A CN201710499244 A CN 201710499244A CN 109138135 A CN109138135 A CN 109138135A
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- water
- storing device
- water storage
- storage box
- arm
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- 230000008595 infiltration Effects 0.000 title claims abstract description 25
- 238000001764 infiltration Methods 0.000 title claims abstract description 25
- 238000000746 purification Methods 0.000 title claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000004743 Polypropylene Substances 0.000 claims abstract description 32
- 230000002787 reinforcement Effects 0.000 claims abstract description 26
- 230000001681 protective effect Effects 0.000 claims abstract description 24
- 230000035699 permeability Effects 0.000 claims abstract description 7
- -1 polypropylene Polymers 0.000 claims abstract description 5
- 229920001155 polypropylene Polymers 0.000 claims abstract description 5
- 229920000742 Cotton Polymers 0.000 claims abstract description 4
- 238000001746 injection moulding Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 238000013508 migration Methods 0.000 abstract description 4
- 230000005012 migration Effects 0.000 abstract description 4
- 238000003306 harvesting Methods 0.000 abstract description 2
- 241000195493 Cryptophyta Species 0.000 description 3
- 241000255925 Diptera Species 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004746 geotextile Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
-
- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Sewage (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of urban pavement rainwater to purify PP water-storing device from infiltration, belong to rainwater harvesting technology field, PP polypropylene water-storing device ontology including being equipped with protective edge arm, protective edge arm is equipped with locating slot, positioning convex platform, multiple connection boss and multiple connecting grooves, there is water storage box array on water-storing device ontology, water storage box array is made of two rows of water storage box groups, lateral reinforcement arm is equipped between two rows of water storage box groups, there is separate slot in the middle part of water storage box, water storage box is separated into two water storage boxes by separate slot, there is catch basin on two water storage boxes, rain filter cotton in catch basin, there is permeable tank on catch basin, there is rotary permeability hole in permeable tank, water storage box is surrounded by turning slot and volution trough.The present invention is easy for installation, and bearing capacity is big, can remove migration, and stable structure, not easily cause offset in the construction process, and use is more stable, is conducive to promote and apply on a large scale.
Description
Technical field
The present invention relates to a kind of water-storing devices, fill more particularly to a kind of urban pavement rainwater from infiltration purification PP water storage
It sets, belongs to rainwater harvesting technology field.
Background technique
With the quick progress of Urbanization Construction, city hard surface is more and more, and corresponding urban green space area is also got over
Come fewer, the regions such as greenery patches, wetland, irrigation canals and ditches with water conservation function are largely evolved into hard surface under natural conditions,
City is caused to be only capable of draining by city planting ductwork when facing precipitation, on the one hand such drainage pattern sets city planting ductwork
Meter standard is higher, and the rainwater of another aspect hard surface, which passes through pipeline mostly and flows away, causes the waste of water resource, because for
For most city its underground water is more due to needing the personnel that supply, typically water shortage;For above situation, 2012
Year, China was put forward for the first time the theory in " sponge city ", put forward new requirements to the construction of urban road, so-called sponge city
City is the Urban Storm Flood management concept of a new generation, refers to that city has good bullet in reply rainwater bring natural calamity etc.
Property, there can be good elasticity as sponge, rainwater can be preferably conserved when encountering rain flood.
Since water resource is increasingly in short supply, advanced country in the world all pays much attention to the research and product development of rainwater utilization, passes
The storing facilities of water of system has civil engineering reservoir, water storage well, stainless steel water tank etc., and rainwater utilization water-storing device is molded with polypropylene
Made of the assembled chest of structure plate, the matrix of plastic module composition as certain amount, which is buried, forms one in underground
A huge storage cistern, and anti-seepage geotextile or unidirectional osmosis geotextiles are wrapped up according to requirement of engineering in peripheral pool, there can be work
The pond of the big vast two kinds of different function in pond is adjusted for storage cistern or infiltration, water storage matrix is easy for installation, and bearing capacity is big, do not breed mosquito and
Algae can also remove migration, currently, this product is widely used in the quick row for quickly building rain water reservoir, parking lot
Water etc., but this box water-storing device is still not perfect in some aspects, such as overall structure is unstable, water-storing device
Between do not connect and position, be easy to cause offset in work progress, accumulation to it is certain when cause it is subsequent difficult to install.
Summary of the invention
The main object of the present invention is to provide for a kind of urban pavement rainwater from infiltration purification PP water-storing device, for solving
Certainly overall structure present in currently available technology is unstable, it is unstable to connect between water-storing device, lacks effective position, construction
Process easily causes the problem of offset.
The purpose of the present invention can reach by using following technical solution:
A kind of urban pavement rainwater is from infiltration purification PP water-storing device, including rectangular water-storing device ontology, the water storage
Device noumenon be PP polypropylene water-storing device ontology, the water-storing device ontology be equipped with protective edge arm, two of the protective edge arm
It is respectively equipped with locating slot and positioning convex platform on opposite side, multiple connection boss and more are equipped on the another two opposite side of the protective edge arm
A connecting groove, the water-storing device ontology are equipped with water storage box array, and the water storage box array is made of two rows of water storage box groups,
Multiple lateral reinforcement arm are equipped between two rows of water storage box groups, water storage box group described in every row is made of multiple water storage boxes, and two
It is equipped with vertical reinforcement arm between the water storage box, is equipped with separate slot in the middle part of each water storage box, the separate slot is by the storage
Water tank separates into two water storage boxes, is respectively equipped with the first catch basin and the second catch basin on two water storage boxes, and described first
It is equipped with purification device in catch basin and second catch basin, the purification device is for purifying rainwater on road surface, and described first
It is equipped with the permeable tank of a strip on catch basin and second catch basin, is equipped with multiple rotary infiltrations in the permeable tank
Hole, for the rotary permeability hole for penetrating into deposit in soil, the surrounding of each water storage box is equipped with turning slot
And volution trough, the volution trough are made of symmetrical the first volution trough and the second volution trough.
Preferable scheme is that the locating slot and the positioning convex platform are symmetrical arranged, the locating slot and the convex
Platform is for positioning two interconnected water-storing device ontology.
In any of the above-described scheme preferably, the depth of the locating slot is identical as the height of the positioning convex platform, institute
State the of same size of the width of locating slot and the positioning convex platform.
In any of the above-described scheme preferably, a side of the protective edge arm is equipped with multiple first connection boss and more
A first connecting groove, multiple first connection boss are arranged between multiple first connecting grooves.
In any of the above-described scheme preferably, another side of the protective edge arm be equipped with multiple second connection boss and
Multiple second connecting grooves, multiple second connection boss are arranged between multiple second connecting grooves.
It is in any of the above-described scheme preferably, vertical between the transverse direction reinforcement arm and the vertical reinforcement arm to connect,
Transverse direction reinforcement arm and the vertical reinforcement arm integrated injection molding between the water-storing device ontology.
In any of the above-described scheme preferably, the water storage box and the protective edge arm with the water-storing device ontology it
Between integrated injection molding.
In any of the above-described scheme preferably, the water storage between the transverse direction reinforcement arm and the vertical reinforcement arm
Device noumenon is equipped with multiple intermediate weepage holes, and the intermediate weepage holes are for leaking rainwater.
In any of the above-described scheme preferably, the water-storing device ontology between the water storage box and the protective edge arm
Multiple side weepage holes are equipped with, multiple side weepage holes are for leaking rainwater.
In any of the above-described scheme preferably, the purification device is dmp filter cotton.
Advantageous effects of the invention: urban pavement rainwater according to the invention is from infiltration purification PP water-storing device, originally
The urban pavement rainwater provided is invented from infiltration purification PP water-storing device, easy for installation, bearing capacity is big, does not breed mosquito and algae
Class can also remove migration, can be widely used in and quickly build rain water reservoir, the Quick drainage in parking lot etc., solution
Overall structure present in currently available technology of having determined is unstable, it is unstable to connect between water-storing device, lacks effective position, applies
The problem of work process easily causes offset, the PP water-storing device overall structure are stablized, and connection and positioning knot are equipped between water-storing device
Structure does not easily cause offset in work progress, and use is more stable, is conducive to promote and apply on a large scale.
Detailed description of the invention
Fig. 1 is the entirety for the preferred embodiment that urban pavement rainwater according to the invention purifies PP water-storing device from infiltration
Structural schematic diagram;
Fig. 2 is the entirety for the preferred embodiment that urban pavement rainwater according to the invention purifies PP water-storing device from infiltration
Structural side view, the embodiment can be embodiment identical with Fig. 1, be also possible to the embodiment different from Fig. 1.
In figure: 1- water-storing device ontology, 2- locating slot, 3- positioning convex platform, the connection boss of 4- first, 5- second connects convex
Platform, the first connecting groove of 6-, the second connecting groove of 7-, 8- water storage box, 9- transverse direction reinforcement arm, the vertical reinforcement arm of 10-, the side 11-
Weepage holes, the centre 12- weepage holes, 13- protective edge arm, the first catch basin of 81-, the second catch basin of 82-, 83- turning slot, 84- separate slot,
The first volution trough of 85-, the second volution trough of 86-, 88- permeable tank, the rotary permeability hole of 89-.
Specific embodiment
To make the more clear and clear technical solution of the present invention of those skilled in the art, below with reference to examples and drawings
The present invention is described in further detail, and embodiments of the present invention are not limited thereto.
As depicted in figs. 1 and 2, a kind of urban pavement rainwater provided in this embodiment is wrapped from infiltration purification PP water-storing device
Rectangular water-storing device ontology 1 is included, the water-storing device ontology 1 is PP polypropylene water-storing device ontology, the water-storing device sheet
Body 1 is equipped with protective edge arm 13, is respectively equipped with locating slot 2 and positioning convex platform 3, the protective edge on two opposite side of the protective edge arm 13
Multiple connection boss and multiple connecting grooves are equipped on the another two opposite side of arm 13, the water-storing device ontology 1, which is equipped with, to be stored
Water tank array, the water storage box array are made of two rows of water storage box groups, are equipped with multiple transverse directions between two rows of water storage box groups and are added
Strong arm 9, water storage box group described in every row are made of multiple water storage boxes 8, and vertical reinforcement arm 10 is equipped between two water storage boxes 8,
The middle part of each water storage box 8 is equipped with separate slot 84, and the water storage box 8 is separated into two water storage boxes by the separate slot 84, and two
The first catch basin 81 and the second catch basin 82, first catch basin 81 and second collection are respectively equipped on a water storage box
It is equipped with purification device in sink 82, the purification device is for purifying rainwater on road surface, first catch basin 81 and described the
It is equipped with the permeable tank 88 of a strip on two catch basins 82, is equipped with multiple rotary permeability holes 89, institute in the permeable tank 88
Rotary permeability hole 89 is stated for penetrating into deposit in soil, the surrounding of each water storage box 8 is equipped with turning slot 83
And volution trough, the volution trough are made of symmetrical the first volution trough 85 and the second volution trough 86.
Further, in the present embodiment, as shown in Figure 1, the locating slot 2 and the positioning convex platform 3 are symmetrical arranged, institute
It states locating slot 2 and the positioning convex platform 3 is used to position two interconnected water-storing device ontology 1, the locating slot 2
Depth is identical as the height of the positioning convex platform 3, and the width of the locating slot 2 is of same size with the positioning convex platform 3.
Further, in the present embodiment, as shown in Figure 1, a side of the protective edge arm 13 is equipped with multiple first companies
Connect boss 4 and multiple first connecting grooves 6, multiple first connections boss 4 settings multiple first connecting grooves 6 it
Between, another side of the protective edge arm 13 is equipped with multiple second connection boss 5 and multiple second connecting grooves 7, multiple described
Second connection boss 5 is arranged between multiple second connecting grooves 7.
Further, in the present embodiment, as shown in Figure 1, between the transverse direction reinforcement arm 9 and the vertical reinforcement arm 10
Vertical connection, the transverse direction reinforcement arm 9 and the vertical reinforcement arm 10 between the water-storing device ontology 1 integrated injection molding at
Type, the water storage box 8 and the protective edge arm 13 integrated injection molding between the water-storing device ontology 1.
Further, in the present embodiment, as shown in Figure 1, between the transverse direction reinforcement arm 9 and the vertical reinforcement arm 10
The water-storing device ontology 1 be equipped with multiple intermediate weepage holes 12, the intermediate weepage holes 12 are for leaking rainwater, the storage
The water-storing device ontology 1 between water tank 8 and the protective edge arm 13 is equipped with multiple side weepage holes 11, multiple sides
Weepage holes 11 are dmp filter cotton for leaking rainwater, the purification device.
In conclusion in the present embodiment, PP water-storing device is purified from infiltration according to the urban pavement rainwater of the present embodiment,
Urban pavement rainwater provided in this embodiment from infiltration purification PP water-storing device, easy for installation, bearing capacity is big, do not breed mosquito and
Algae can also remove migration, can be widely used in and quickly build rain water reservoir, the Quick drainage in parking lot etc.,
Solve overall structure present in currently available technology is unstable, it is unstable to connect between water-storing device, lack effective position,
Work progress easily causes the problem of offset, which stablizes, and connection and positioning are equipped between water-storing device
Structure does not easily cause offset in work progress, and use is more stable, is conducive to promote and apply on a large scale.
The above, further embodiment only of the present invention, but scope of protection of the present invention is not limited thereto, and it is any
Within the scope of the present disclosure, according to the technique and scheme of the present invention and its design adds those familiar with the art
With equivalent substitution or change, protection scope of the present invention is belonged to.
Claims (10)
1. a kind of urban pavement rainwater is from infiltration purification PP water-storing device, including rectangular water-storing device ontology (1), feature exists
In: the water-storing device ontology (1) is PP polypropylene water-storing device ontology, and the water-storing device ontology (1) is equipped with protective edge arm
(13), locating slot (2) and positioning convex platform (3), the protective edge arm (13) are respectively equipped on two opposite side of the protective edge arm (13)
Another two opposite side on be equipped with multiple connection boss and multiple connecting grooves, the water-storing device ontology (1) is equipped with water storage
Case array, the water storage box array are made of two rows of water storage box groups, and multiple laterally reinforcements are equipped between two rows of water storage box groups
Arm (9), water storage box group described in every row are made of multiple water storage boxes (8), and vertical reinforcement arm is equipped between two water storage boxes (8)
(10), it is equipped with separate slot (84) in the middle part of each water storage box (8), the separate slot (84) separates into the water storage box (8)
Two water storage boxes are respectively equipped with the first catch basin (81) and the second catch basin (82), first collection on two water storage boxes
Purification device is equipped in sink (81) and second catch basin (82), the purification device is for purifying rainwater on road surface, institute
State the permeable tank (88) that a strip is equipped on the first catch basin (81) and second catch basin (82), the permeable tank
(88) multiple rotary permeability holes (89) are equipped in, the rotary permeability hole (89) is used to penetrate into deposit in soil,
The surrounding of each water storage box (8) is equipped with turning slot (83) and volution trough, and the volution trough is by the first symmetrical whirlpool
Spin slot (85) and the second volution trough (86) composition.
2. a kind of urban pavement rainwater according to claim 1 purifies PP water-storing device from infiltration, it is characterised in that: described
Locating slot (2) and the positioning convex platform (3) are symmetrical arranged, and the locating slot (2) and the positioning convex platform (3) are used for two mutually
The water-storing device ontology (1) of connection is positioned.
3. a kind of urban pavement rainwater according to claim 1 purifies PP water-storing device from infiltration, it is characterised in that: described
The depth of locating slot (2) is identical as the height of the positioning convex platform (3), the width and the positioning convex platform of the locating slot (2)
(3) of same size.
4. a kind of urban pavement rainwater according to claim 1 purifies PP water-storing device from infiltration, it is characterised in that: described
One side of protective edge arm (13) is equipped with multiple first connections boss (4) and multiple first connecting grooves (6), and multiple described first
Boss (4) are connected to be arranged between multiple first connecting grooves (6).
5. a kind of urban pavement rainwater according to claim 4 purifies PP water-storing device from infiltration, it is characterised in that: described
Another side of protective edge arm (13) is equipped with multiple second connections boss (5) and multiple second connecting grooves (7), and multiple described the
Two connections boss (5) are arranged between multiple second connecting grooves (7).
6. a kind of urban pavement rainwater according to claim 1 purifies PP water-storing device from infiltration, it is characterised in that: described
It is vertical between lateral reinforcement arm (9) and the vertical reinforcement arm (10) to connect, the transverse direction reinforcement arm (9) and the vertical reinforcement
Arm (10) integrated injection molding between the water-storing device ontology (1).
7. a kind of urban pavement rainwater according to claim 1 purifies PP water-storing device from infiltration, it is characterised in that: described
Water storage box (8) and the protective edge arm (13) integrated injection molding between the water-storing device ontology (1).
8. a kind of urban pavement rainwater according to claim 1 purifies PP water-storing device from infiltration, it is characterised in that: described
The water-storing device ontology (1) between lateral reinforcement arm (9) and the vertical reinforcement arm (10) is equipped with multiple intermediate leakages
Hole (12), the intermediate weepage holes (12) are for leaking rainwater.
9. a kind of urban pavement rainwater according to claim 1 purifies PP water-storing device from infiltration, it is characterised in that: described
The water-storing device ontology (1) between water storage box (8) and the protective edge arm (13) is equipped with multiple side weepage holes (11), more
A side weepage holes (11) are for leaking rainwater.
10. a kind of urban pavement rainwater according to claim 1 purifies PP water-storing device from infiltration, it is characterised in that: institute
Stating purification device is dmp filter cotton.
Priority Applications (1)
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CN201710499244.2A CN109138135A (en) | 2017-06-27 | 2017-06-27 | A kind of urban pavement rainwater is from infiltration purification PP water-storing device |
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CN201710499244.2A CN109138135A (en) | 2017-06-27 | 2017-06-27 | A kind of urban pavement rainwater is from infiltration purification PP water-storing device |
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Citations (10)
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---|---|---|---|---|
JPH10114993A (en) * | 1996-10-14 | 1998-05-06 | Michito Fukazawa | Block for collecting water and drainage structure using block thereof |
CN202809695U (en) * | 2012-07-28 | 2013-03-20 | 广东联塑科技实业有限公司 | Rainwater storage module and rainwater storage device |
CN205088876U (en) * | 2014-12-31 | 2016-03-16 | 杭州置顶科技有限公司 | Built on stilts drainage panel that holds of plastics |
CN205206004U (en) * | 2015-10-15 | 2016-05-04 | 郑士喜 | U -shaped infiltration drainage unit |
CN205444300U (en) * | 2015-12-30 | 2016-08-10 | 康泰塑胶科技集团有限公司 | Water collection module |
CN205653835U (en) * | 2016-05-11 | 2016-10-19 | 吉博力(上海)投资管理有限公司 | Catchment and support groove |
CN205999972U (en) * | 2016-08-31 | 2017-03-08 | 武汉金牛经济发展有限公司 | A kind of water storage module of rain water collecting system |
CN206052853U (en) * | 2016-08-25 | 2017-03-29 | 永亨控股集团有限公司 | A kind of water storage module containing Combined cylindrical type stressed tube |
CN206128274U (en) * | 2016-10-20 | 2017-04-26 | 江苏创世建筑工程有限公司 | Water storage module is collected to rainwater |
CN207211337U (en) * | 2017-06-27 | 2018-04-10 | 中科世沃生态科技江苏有限公司 | A kind of urban pavement rainwater purifies PP water-storing devices from infiltration |
-
2017
- 2017-06-27 CN CN201710499244.2A patent/CN109138135A/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10114993A (en) * | 1996-10-14 | 1998-05-06 | Michito Fukazawa | Block for collecting water and drainage structure using block thereof |
CN202809695U (en) * | 2012-07-28 | 2013-03-20 | 广东联塑科技实业有限公司 | Rainwater storage module and rainwater storage device |
CN205088876U (en) * | 2014-12-31 | 2016-03-16 | 杭州置顶科技有限公司 | Built on stilts drainage panel that holds of plastics |
CN205206004U (en) * | 2015-10-15 | 2016-05-04 | 郑士喜 | U -shaped infiltration drainage unit |
CN205444300U (en) * | 2015-12-30 | 2016-08-10 | 康泰塑胶科技集团有限公司 | Water collection module |
CN205653835U (en) * | 2016-05-11 | 2016-10-19 | 吉博力(上海)投资管理有限公司 | Catchment and support groove |
CN206052853U (en) * | 2016-08-25 | 2017-03-29 | 永亨控股集团有限公司 | A kind of water storage module containing Combined cylindrical type stressed tube |
CN205999972U (en) * | 2016-08-31 | 2017-03-08 | 武汉金牛经济发展有限公司 | A kind of water storage module of rain water collecting system |
CN206128274U (en) * | 2016-10-20 | 2017-04-26 | 江苏创世建筑工程有限公司 | Water storage module is collected to rainwater |
CN207211337U (en) * | 2017-06-27 | 2018-04-10 | 中科世沃生态科技江苏有限公司 | A kind of urban pavement rainwater purifies PP water-storing devices from infiltration |
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