CN208251277U - A kind of height-adjustable rain inlet structure - Google Patents
A kind of height-adjustable rain inlet structure Download PDFInfo
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- CN208251277U CN208251277U CN201820385732.0U CN201820385732U CN208251277U CN 208251277 U CN208251277 U CN 208251277U CN 201820385732 U CN201820385732 U CN 201820385732U CN 208251277 U CN208251277 U CN 208251277U
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- rain
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Abstract
A kind of height-adjustable rain inlet structure, rain inlet structure is arranged at the rainwater catchment of sponge facility, including catch-basin, water storage limits adjustable plate and rain perforaled strainer, the top inner wall of catch-basin is equipped with height adjustment pendant, the shaft bottom of catch-basin is connected with municipal storm sewer, the height-regulating slot for adjusting water storage limit adjustable plate and catch-basin relative altitude is provided on barrel, height-regulating slot is articulated on height adjustment pendant, rain perforaled strainer and catch-basin pass through the hinged free-open-close of first rotating shaft, rainwater passes through rain perforaled strainer from sponge facility and water storage limit adjustable plate is flowed into after catch-basin and imported in municipal storm sewer, form rainwater catchment path.The utility model can adjust the height that rainwater is accumulated in sponge facility as needed, both overlong time can be saved to avoid rainwater, mosquito is caused to breed, and the time that rainwater imports municipal storm sewer can be adjusted, for sponge urban construction, alleviates urban waterlogging and be of great significance.
Description
Technical field
The utility model relates to rainwater regulation and control field, especially a kind of rain inlet structure suitable for sponge urban construction.
Background technique
China be a water resource there is a serious shortage of country, possess water resources quantity per capita and just correspond to world's per capita ownership
1/4.There are more than 400 water shortages in national 668 cities, wherein more serious water shortage city is up to 110.However simultaneously, rain
Water resource by and its serious waste, rainwater be concentrated through drainage pipeline networks outlet, and bring very big pressure to municipal storm sewer,
Urban waterlogging happens occasionally.Many cities, which are faced with, meets rain flooded, while the contradiction of shortage of water resources again.
Sponge city is new generation of city storm water man- agement concept, refers to that city is adapting to environmental change and reply rainwater band
Natural calamity come etc. has good " elasticity ", also referred to as " water elasticity city ".International term is " low shadow
Ring the building of exploitation storm-water system ".For the problem for alleviating urban waterlogging and shortage of water resources, country starts that sponge city is promoted to build
If changing the storm water management mode based on previous outlet, rainwater is left to and is adhered to the principle of " seep, is stagnant, storing, net, use, row ",
I.e. rainwater is first stored in sponge facility, is purified, 70% or more rainwater on-site elimination is reduced and be discharged into municipal administration by lower infiltration, reuse
The amount of rainfall of storm sewer.Therefore under the new model of sponge urban construction, original rainwater outlet structure is difficult to meet sponge city
The demand of city's construction.
Utility model content
The purpose of the utility model is to provide a kind of height-adjustable rain inlet structures, to solve rainwater and be concentrated through draining
The technical issues of pipe network outlet, municipal storm sewer pressure is big, and urban waterlogging not can avoid, will also solve city water resource shortage
The technical issues of waste is extremely serious, is unable to satisfy sponge urban construction demand.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of height-adjustable rain inlet structure is arranged at the rainwater catchment of the sponge facility with difference in height, including
Catch-basin, water storage limit adjustable plate and rain perforaled strainer,
The sponge facility is recessed greenery patches, Rain Garden, biological delaying basin or grass planting ditch,
The catch-basin is embedded in underground at rainwater catchment, and the top inner wall of catch-basin is hung equipped with height adjustment
Part, the shaft bottom of catch-basin are connected with municipal storm sewer,
Water storage limit adjustable plate be the cylinder for not setting top plate and bottom plate, be provided on barrel adjust water storage limit adjustable plate and
The height-regulating slot of catch-basin relative altitude, height-regulating slot are articulated on height adjustment pendant, and water storage limits the top of adjustable plate
The well head of catch-basin is stretched out or enters in portion,
By the hinged free-open-close of first rotating shaft, rain perforaled strainer covers on the well head of catch-basin for the rain perforaled strainer and catch-basin
With the top of water storage limit adjustable plate, the first rotating shaft is fixedly connected on the upper surface of well head,
Rainwater passes through rain perforaled strainer from sponge facility and water storage limit adjustable plate flows into after catch-basin and imports municipal rain pipe
In road, rainwater catchment path is formed.
The lower inner wall of the catch-basin when passing through equipped with rainwater can 180 degree rotation, recovery is horizontal when passing through without rainwater
The every flavour plate of the rotation of posture, the every flavour plate of rotation are fixedly connected on the inner wall of catch-basin by the second shaft,
The gate plate that the outer contour shape of the every flavour plate of rotation and the cross section of inboard wall shape of catch-basin are adapted, it is described
Gate plate is by second shaft and the hinged single open-door plate of catch-basin or by opposite two the second shafts and catch-basin
Hinged double door plate.
The cross-sectional shape of the water storage limit adjustable plate and the cross-sectional shape of catch-basin are adapted, and are cylinder or side
Cylinder, the water storage limit and are banded with plate body operating rope at the top of adjustable plate,
The height-regulating slot is at least symmetrically provided at two on water storage limit adjustable plate, the fluting of all height-regulating slots
Shape and absolute altitude are all the same, and the height adjustment pendant is arranged in a one-to-one correspondence with height-regulating slot.
The height-regulating slot is combed, and every place's height-regulating slot includes one of comb back slot and one group of comb teeth slot, comb teeth slot
For height adjustment gear, the comb back slot is from the bottom edge of barrel along vertically opening up the middle part until barrel, the comb teeth slot upwards
It is opened up from comb back slot to equidirectional parallel interval level, every place's height-regulating slot includes 5-7 comb teeth slot, the height between comb teeth slot
Spending regulation stall distance is 3-5cm, and the height adjustment pendant enters from comb back slot to be hung on comb teeth slot.
On gap, water storage limit adjustable plate on water storage limit adjustable plate between catch-basin with height adjustment pendant
Between gap and water storage limit adjustable plate comb teeth slot in not used part be all made of rubber weather strip sealing.
The outer contour shape of the rain perforaled strainer is hemisphere, tetragonous stage body or cuboid, and side and top surface were equipped with
The resistance to compression load in water hole hole, the rain perforaled strainer is greater than 15kN/m2, the rain perforaled strainer is equipped with theftproof lock.
The catch-basin is made of cast-in-place concrete, and the height adjustment pendant is the outer painting being embedded on catch-basin inner wall
The bolt of antirust coat, the bolt include screw rod and nut, on the inner wall of one end embedment catch-basin of the screw rod, screw rod it is another
One end is limited through water storage limit adjustable plate and by nut, and the water storage limit adjustable plate is made of stainless steel.
The top end face of the water storage limit adjustable plate, which is added, is fixedly connected with a circle reinforced steel, and the surface of reinforced steel applies
There is waterproof layer.
The catch-basin and height adjustment pendant are made into integration by macromolecule polymer material, and the height adjustment is hung
Part is the hook for protruding catch-basin inner wall and being folded upward at, and the water storage limit adjustable plate is also by macromolecule polymer material system
At.
Compared with prior art the utility model have the characteristics that and the utility model has the advantages that
The utility model provides a kind of height-adjustable rain inlet structure and is set to the seas such as recessed greenery patches, biological delaying basin
In continuous facility, the rainwater of the waterproof underlayer of mating formation such as roof, road, square, confluence enter sponge facility, are suitable for when raining
The regulation of rainwater in sponge urban construction.
The utility model rain inlet structure simple structure, rain perforaled strainer pin joint, water storage limit adjustable plate mount and pass through plate
The installation of body operating rope and maintenance, with very convenient, construction cost is low, advantages of environment protection.Water storage limit adjustable plate passes through
Height-regulating slot is opened up on plate body, cooperates fixed height adjustment pendant on catch-basin to have the characteristics that height-adjustable, when
It needs that the rainwater in sponge facility is discharged as early as possible, when avoiding breeding mosquito, superelevation adjustable plate is adjusted to low-grade location, rainwater is smooth
Discharge.When needing to accumulate more rainwater, or delay rainwater is discharged into the time of municipal storm sewer, then by superelevation adjustable plate tune
Height, rainwater delay are avoided the peak hour discharge.
The every flavour plate of the rotation of the utility model also has the function of preventing from altering on the foul odour of shaft bottom, is applied to rainwater flower
In garden and recessed greenery patches, the environment of periphery amusement and recreation is not influenced.The utility model is adjusted as needed to be accumulated in sponge facility
The height of rainwater both can save overlong time to avoid rainwater, mosquito is caused to breed, and can adjust rainwater and import municipal pipeline
Time, mitigate the pressure of municipal storm sewer, for sponge urban construction, alleviate urban waterlogging and be of great significance.
Detailed description of the invention
The utility model is described in more detail with reference to the accompanying drawing.
Fig. 1 is the inlet for stom water side the schematic diagram of the section structure of the utility model embodiment one.
Fig. 2 is the deployed configuration schematic diagram of water storage limit adjustable plate.
Fig. 3 is the connection structure enlarged drawing of water storage limit adjustable plate and height adjustment pendant.
Fig. 4 is the side structure schematic view that outer contour shape is hemisphere rain perforaled strainer.
Fig. 5 is the overlooking structure diagram of Fig. 4.
Fig. 6 is the overlooking structure diagram that outer contour shape is cuboid rain perforaled strainer.
Fig. 7 is the overlooking structure diagram that outer contour shape is tetragonous stage body rain perforaled strainer.
Fig. 8 is the inlet for stom water side the schematic diagram of the section structure of the utility model embodiment two.
Appended drawing reference: 1- sponge facility, 2- rain perforaled strainer, 3- water storage limit adjustable plate, 4- catch-basin, 5- municipal administration
Storm sewer, 6- height adjustment pendant, 61- screw rod, 62- nut, 7- height-regulating slot, 71- comb back slot, 72- comb teeth
Slot, 8- reinforced steel, 9- rotate every flavour plate, the second shaft of 10-, 11- water (flow) direction, 12- first rotating shaft, the road 13-LID
Kerb, 14- water hole hole.
Specific embodiment
For embodiment one referring to shown in Fig. 1-5, sponge facility is certain recessed greenery patches, area 200m2, recessed depth 30cm, rain
Mouth of a river initial designs elevation is 25cm.A kind of height-adjustable rain inlet structure, is arranged at the rainwater catchment in recessed greenery patches, packet
Include catch-basin 4, water storage limit adjustable plate 3 and rain perforaled strainer 2.
The catch-basin 4 is embedded in underground at rainwater catchment, and the top inner wall of catch-basin is hung equipped with height adjustment
Part 6, the shaft bottom of catch-basin 4 are connected with municipal storm sewer 5.
The water storage limit adjustable plate 3 is the cylinder for not setting top plate and bottom plate, is provided on barrel and adjusts water storage limit adjustable plate 3
With the height-regulating slot 7 of catch-basin relative altitude, height-regulating slot 7 is articulated on height adjustment pendant 6.Water storage limits adjustable plate
The well head of catch-basin 4 is stretched out or enters at 3 top.The cross-sectional shape of the water storage limit adjustable plate 3 is transversal with catch-basin 4
Face shape is adapted, and is cylinder or square tube, and the top of the water storage limit adjustable plate 3 is banded with plate body operating rope.The present embodiment
Middle height-regulating slot 7 is provided at two opposite side on water storage limit adjustable plate 3, the fluting shape and absolute altitude of height-regulating slot 7 at two
All the same, the height adjustment pendant 6 is arranged in a one-to-one correspondence with height-regulating slot 7 is also provided with two.The height-regulating slot 7 is
Combed, every place's height-regulating slot include one of comb back slot 71 and one group of comb teeth slot 72, and comb teeth slot 72 is height adjustment gear, described
Comb back slot 71 from the bottom edge of barrel along the middle part until barrel is vertically opened up upwards, and the comb teeth slot 72 is from comb back slot 71 to Tongfang
It is opened up to parallel interval level, every place's height-regulating slot includes 5-7 comb teeth slot 72, the height adjustment gear between comb teeth slot 72
Distance is 3-5cm, and the height adjustment pendant 6 enters from comb back slot 71 to be hung on comb teeth slot 72.
For the rain perforaled strainer 2 with catch-basin 4 by the hinged free-open-close of first rotating shaft 12, rain perforaled strainer 2 covers on catch-basin 4
Well head and water storage limit adjustable plate 3 top, the first rotating shaft 12 is fixedly connected on the upper surface of well head.Referring to fig. 4-7
Shown, the outer contour shape of the rain perforaled strainer 2 is hemisphere, tetragonous stage body or cuboid, and side and top surface were equipped with water
Hole 14.It is hemisphere in the present embodiment.The rain perforaled strainer 2 is equipped with theftproof lock.The rain perforaled strainer 2 can for green or
Other colors, it is matching in color with sponge facility.The resistance to compression load of the rain perforaled strainer 2 is greater than 15kN/m2, rain perforaled strainer 2 needs energy
It is enough to bear to trample pressure, but because being applied in 1 in sponge facility, be set in runway rather than traditional inlet for stom water, so being not required to
Bear motor vehicle load.
The lower inner wall of the catch-basin 4 when passing through equipped with rainwater can 180 degree rotation, recovery is horizontal when passing through without rainwater
The every flavour plate 9 of the rotation of posture, the every flavour plate 9 of rotation are fixedly connected on the inner wall of catch-basin 4 by the second shaft 10.It is described
The adaptable gate plate of the cross section of inboard wall shape of the outer contour shape and catch-basin that rotate every flavour plate 9, the gate plate is logical
Cross second shaft 10 and the hinged single open-door plate of catch-basin or hinged by opposite two the second shafts 10 and catch-basin
Double door plate.The present embodiment is double door plate.
On gap, water storage limit adjustable plate 3 on water storage limit adjustable plate 3 between catch-basin 4 with height adjustment
Gap and water storage between pendant 6 limit not used part in the comb teeth slot of adjustable plate 3 and are all made of rubber weather strip sealing.
In the present embodiment, the catch-basin 4 is made of cast-in-place concrete, and the height adjustment pendant 6 is to be embedded in rainwater
The bolt for applying antirust coat outside on 4 inner wall of well, the bolt include screw rod 61 and nut 62, and one end of the screw rod 61 is embedded to rain
On the inner wall of well 4, the other end of screw rod 61 is limited through water storage limit adjustable plate 3 and by nut 62, the water storage limit
Adjustable plate 3 is made of stainless steel.The top end face of the water storage limit adjustable plate 3, which is added, is fixedly connected with a circle reinforced steel 8, adds
Gu the surface of reinforcing bar is coated with waterproof layer.
Rainwater passes through rain perforaled strainer 2 from sponge facility 1 and water storage limit adjustable plate 3 flows into after catch-basin 4 and imports municipal rain
In waterpipe 5, rainwater catchment path is formed.
The construction method of this height-adjustable rain inlet structure, construction procedure are as follows:
Step 1: catch-basin 4 cast-in-place or that installation is prefabricated of constructing at the rainwater catchment of sponge facility 1, and in shaft bottom
It is connect with municipal storm sewer 5.
Step 2: installation rotates every flavour plate 9 on the inner wall of catch-basin.
It is hung Step 3: water storage limit adjustable plate 3 is hung over height adjustment pre-buried or with 4 integral preform of catch-basin in advance
On part 6, each height-regulating slot 7 of water storage limit adjustable plate 3 is hung on the same comb teeth slot 72 i.e. height adjustment gear.
Step 4: installing the rain perforaled strainer 2 processed in factory in advance on the well head of catch-basin 4.
Step 5: roof, road and square hard are mated formation, the rainwater conflux in underlayer enters in sponge facility 1, stagnant
Store purification.
Step 6: rainwater passes through rain perforaled strainer 2 and water storage limit is adjusted when rainwater accumulation is to design height in sponge facility 1
It saves after plate 3 flows into catch-basin 4 and imports in municipal storm sewer 5, pass through municipal 5 outlet of storm sewer.
Step 7: adjusting rainwater mass rate of emission:
When the present embodiment is in use after a rainfall, ponding 25cm is deep in recessed greenery patches, and rainwater is not after 36 hours
In the case where draining completely, prediction this place will also welcome a new rainfall in 24 hours, to avoid long-term ponding in greenery patches from growing
Raw mosquito needs as early as possible to drain rainwater in recessed greenery patches, therefore adjusts the water storage limit in the rain inlet structure in the present embodiment
Position adjustable plate 3 is low-grade location, and remaining rainwater in recessed greenery patches is discharged as early as possible.
Case study on implementation two referring to fig. 2, shown in Fig. 3 and Fig. 8, what is different from the first embodiment is that sponge facility is that certain biology is stagnant
Pond is stayed, the outer contour shape of rain perforaled strainer is cuboid, between runway and pavement, rain in driveway and pavement
Water is flowed into biological delaying basin by LID kerbstone 13, and rainwater stores in biological delaying basin, purifies, lower infiltration, and inlet for stom water is set
It is placed in biological delaying basin.Biological delaying basin is lower than road plane 30cm, and the well head of inlet for stom water is than biological delaying basin superelevation 20cm.
The catch-basin 4 and height adjustment pendant 6 are made into integration by macromolecule polymer material, the height adjustment pendant
6 be to protrude hook catch-basin 4 inner wall and be folded upward at, and the water storage limit adjustable plate 3 is also by macromolecule polymer material system
At.Therefore when the present embodiment is in use, heavy rainfall in short-term is met, water storage limit adjustable plate 3 is adjusted to high tap position, more rainwater then
Stagnant storage can postpone rainwater and be discharged into the municipal storm sewer time, achieve the purpose that avoid the peak hour and discharge rainwater in biological delaying basin.
Claims (9)
1. a kind of height-adjustable rain inlet structure, it is characterised in that: the rainwater of the sponge facility (1) with difference in height is arranged in
Junction, including catch-basin (4), water storage limit adjustable plate (3) and rain perforaled strainer (2),
The sponge facility (1) is recessed greenery patches, Rain Garden, biological delaying basin or grass planting ditch,
The catch-basin (4) is embedded in underground at rainwater catchment, and the top inner wall of catch-basin is equipped with height adjustment pendant
(6), the shaft bottom of catch-basin (4) is connected with municipal storm sewer (5),
Water storage limit adjustable plate (3) is the cylinder for not setting top plate and bottom plate, is provided on barrel and adjusts water storage limit adjustable plate (3)
With the height-regulating slot (7) of catch-basin relative altitude, height-regulating slot (7) is articulated on height adjustment pendant (6), water storage limit
The well head of catch-basin (4) is stretched out or enters at the top of adjustable plate (3),
By first rotating shaft (12) hinged free-open-close, rain perforaled strainer (2) covers on rain for the rain perforaled strainer (2) and catch-basin (4)
The top of the well head of well (4) and water storage limit adjustable plate (3), the first rotating shaft (12) are fixedly connected on the upper table of well head
Face,
Rainwater passes through rain perforaled strainer (2) from sponge facility (1) and water storage limit adjustable plate (3) flows into catch-basin (4) and imports city afterwards
In political affairs storm sewer (5), rainwater catchment path is formed.
2. height-adjustable rain inlet structure according to claim 1, it is characterised in that: the lower part of the catch-basin (4)
Inner wall when passing through equipped with rainwater can 180 degree rotation, without rainwater by when restore the every flavour plate of rotation (9) of horizontal attitude, it is described
Every flavour plate (9) are rotated to be fixedly connected on the inner wall of catch-basin (4) by the second shaft (10),
The gate plate that the outer contour shape of the every flavour plate (9) of rotation and the cross section of inboard wall shape of catch-basin are adapted, it is described
Gate plate is by second shaft (10) and the hinged single open-door plate of catch-basin or by opposite two the second shafts (10)
The double door plate hinged with catch-basin.
3. height-adjustable rain inlet structure according to claim 1, it is characterised in that: the water storage limits adjustable plate
(3) cross-sectional shape and the cross-sectional shape of catch-basin (4) are adapted, and are cylinder or square tube,
Circumferentially uniform intervals are provided at least two the height-regulating slot (7) in water storage limit adjustable plate (3), everywhere height
The fluting shape and absolute altitude of regulating tank (7) are all the same, and the height adjustment pendant (6) corresponds with height-regulating slot (7) and sets
It sets.
4. height-adjustable rain inlet structure according to claim 3, it is characterised in that: the height-regulating slot (7) is
Combed, every place's height-regulating slot include one of comb back slot (71) and one group of comb teeth slot (72), and comb teeth slot (72) is height adjustment shelves
Position, the comb back slot (71) are combed from the bottom edge of barrel along the middle part until barrel, the comb teeth slot (72) is vertically opened up upwards certainly
Back-trough (71) is opened up to equidirectional parallel interval level, and every place's height-regulating slot includes 5-7 comb teeth slot (72), comb teeth slot (72)
Between height adjustment gear distance be 3-5cm, the height adjustment pendant (6) enters from comb back slot (71) hangs over comb teeth slot
(72) on.
5. height-adjustable rain inlet structure according to claim 4, it is characterised in that: the water storage limits adjustable plate
(3) gap between catch-basin (4), the gap in water storage limit adjustable plate (3) between height adjustment pendant (6) and
Not used part is all made of rubber weather strip sealing in the comb teeth slot of water storage limit adjustable plate (3).
6. height-adjustable rain inlet structure according to claim 1, it is characterised in that: outside the rain perforaled strainer (2)
Chamfered shape is hemisphere, tetragonous stage body or cuboid, and side and top surface are equipped with water hole hole (14), the rain perforaled strainer
(2) resistance to compression load is greater than 15.0kN/m2, the rain perforaled strainer (2) is equipped with theftproof lock.
7. height-adjustable rain inlet structure described in -6 any one according to claim 1, it is characterised in that: the catch-basin
(4) it is made of cast-in-place concrete, the height adjustment pendant (6) is to be embedded on catch-basin (4) inner wall to apply antirust coat outside
Bolt, the bolt include screw rod (61) and nut (62), and one end of the screw rod (61) is embedded on the inner wall of catch-basin (4),
The other end of screw rod (61) is limited through water storage limit adjustable plate (3) and by nut (62), and the water storage limits adjustable plate (3)
It is made of stainless steel.
8. height-adjustable rain inlet structure according to claim 7, it is characterised in that: the water storage limits adjustable plate
(3) top end face, which is added, is fixedly connected with a circle reinforced steel (8), and the surface of reinforced steel is coated with waterproof layer.
9. height-adjustable rain inlet structure described in -6 any one according to claim 1, it is characterised in that: the catch-basin
(4) it is made into integration with height adjustment pendant (6) by macromolecule polymer material, the height adjustment pendant (6) is protrusion rainwater
Hook well (4) inner wall and be folded upward at, water storage limit adjustable plate (3) are also made of macromolecule polymer material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820385732.0U CN208251277U (en) | 2018-03-21 | 2018-03-21 | A kind of height-adjustable rain inlet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820385732.0U CN208251277U (en) | 2018-03-21 | 2018-03-21 | A kind of height-adjustable rain inlet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208251277U true CN208251277U (en) | 2018-12-18 |
Family
ID=64609453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820385732.0U Expired - Fee Related CN208251277U (en) | 2018-03-21 | 2018-03-21 | A kind of height-adjustable rain inlet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208251277U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222233A (en) * | 2018-03-21 | 2018-06-29 | 中国建筑股份有限公司 | A kind of rain inlet structure and its construction method for being used to build sponge city |
| CN109723131A (en) * | 2019-02-28 | 2019-05-07 | 河北天防电子信息工程有限公司 | A kind of Auto-drainage well lid and water discharge method |
-
2018
- 2018-03-21 CN CN201820385732.0U patent/CN208251277U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222233A (en) * | 2018-03-21 | 2018-06-29 | 中国建筑股份有限公司 | A kind of rain inlet structure and its construction method for being used to build sponge city |
| CN108222233B (en) * | 2018-03-21 | 2023-12-08 | 中国建筑股份有限公司 | Rain inlet structure for constructing sponge city and construction method thereof |
| CN109723131A (en) * | 2019-02-28 | 2019-05-07 | 河北天防电子信息工程有限公司 | A kind of Auto-drainage well lid and water discharge method |
| CN109723131B (en) * | 2019-02-28 | 2023-08-18 | 河北天防电子信息工程有限公司 | Automatic drainage well lid and drainage method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 Termination date: 20200321 |