CN104153423B - The inside and outside water inlet of platform shape is from oozing anti-filter recharge well wellhead assembly - Google Patents
The inside and outside water inlet of platform shape is from oozing anti-filter recharge well wellhead assembly Download PDFInfo
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- CN104153423B CN104153423B CN201410365827.2A CN201410365827A CN104153423B CN 104153423 B CN104153423 B CN 104153423B CN 201410365827 A CN201410365827 A CN 201410365827A CN 104153423 B CN104153423 B CN 104153423B
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- well lid
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- water inlet
- hollow ring
- wellhead assembly
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000000835 fiber Substances 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims description 11
- 238000003825 pressing Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000002352 surface water Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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Abstract
The inside and outside water inlet of a kind of platform shape, from oozing anti-filter recharge well wellhead assembly, belongs to water conservation technical field.Wellhead assembly comprises well lid, geotechnical fibre filter layer and pressing mechanism, described well lid is made up of with the well lid bottom being embedded in below ground at the bottom of river bed or canal the well lid top of the band water inlet arranged in hollow ring body groove, well lid entirety is the bottomless cone table of hollow, and the hollow ring body groove that described well lid center upper portion is provided with is the square groove with bottom land; Inside well lid upper outside, hollow ring body groove and bottom land be equipped with circular water inlet; Described well lid bottom is waterproof body; Described geotechnical fibre filter layer to be arranged at outside well lid and with well lid outside and the shape of hollow ring body groove match; Pressing mechanism comprises vertical shaft and blade.This device, when wellhead assembly appearance and size is constant, can significantly improves and recharge pond conveyance capacity, anti-silting impact resistance, extend the application life of recharging pond, can accelerate the speed of recharging again simultaneously, be conducive to raising and recharge efficiency.
Description
Technical field
The present invention relates to a kind of recharge well recharged for self-leak type free groundwater, particularly the inside and outside water inlet of a kind of platform shape is from oozing anti-filter recharge well wellhead assembly, belongs to water conservation technical field.
Background technology
The how water conservation or how to prevent the inwelling caused because of exhaustive exploitation underground water from being the key subjects of restriction local people life and economic development in coastal area in the area of some lack of water, and the means solving this problem are except strengthening people's consciousness of saving water, effectively utilizing rain-flood resources is also one of important measures.
In order to make full use of rain-flood resources, in the ephemeral stream not having pollution or light contamination, usually arrange a kind of recharge well self with particulate contamination function in filtered water, namely from oozing recharge well, also known as anti-filter recharge well, machine seepage well.Current employing certainly ooze anti-filter recharge well by recharging pond and common recharge well forms, wherein recharging pond and be usually embedded in underground, is the shape of falling Sifangtai or circle, dark about 1m, Cast-in-situ Piles in Sand-filling, rubble two-stage filter material in pond, for filtering river and being recharged by river in recharge well; Recharge well is positioned at and recharges in the middle of bottom pond, and be columned cavity, its well head adds a cover the perforated concrete well cover of a band, river is in time recharging above pond, gather via sand, the infiltration of rubble two-stage filter material, enter in recharge well by eyelet on concrete well cover, realize water conservation and recharge.But, thisly from oozing recharge well Problems existing be: 1, certainly ooze recharge well and be placed at the bottom of river bed or canal, very easily silting and being washed out by current, affect application life; 2, recharge pond and be embedded in underground, only recharge pond end face one and freely to intake section, for ensureing enough amounts of recharging, recharging pond needs larger cross sectional area, and great in constructing amount; What 3, construction one was common recharges pond needs to backfill 10m
3sand, the rubble of left and right, consume a large amount of constructional materials; 4, the use of concrete well cover have impact on the amount of recharging; 5, only have end face to intake, the water recharge capacity of recharge well is low.These defects have had a strong impact on the result of use of recharge well, do not play its water conservation usefulness to greatest extent.
Chinese patent 201220458416.4 discloses the water inlet of a kind of multiaspect from oozing anti-filter recharge well wellhead assembly, it on recharge well, is provided with one cover in wellhead assembly above well head, and described wellhead assembly comprises well lid and is fixedly installed on the geotechnical fibre filter layer outside well lid; Described well lid is made up of the top cover in band top cover aperture and the rigid side wall that is vertically connected at top cover surrounding; Described sidewall is made up of superposed sidewall meshed portion and the sidewall non-porous sections being positioned at bottom, geotechnical fibre filter layer by top cover and sidewall meshed portion coated, sidewall non-porous sections bottom is embedded in below ground at the bottom of river bed or canal, sidewall non-porous sections middle and upper part is exposed, and the top cover upper surface of described well lid is inclined plane.This device section solves above-mentioned prior art Problems existing, and there is larger section of freely intaking, prevent the function of low water stage waste water injection, and there is certain anti-filter function and certain anti-silting impact resistance, extend the application life of recharging pond, be easy to construction simultaneously, and save sandstone filter material.
But, because most of rainfall belongs to shower, rainwater overcurrent time in river is short, only rely on the permeable hole on top cover and sidewall cannot meet the needs of the amount of recharging, researcher also attempts the size of increase permeable hole to increase water amount, but the size of permeable hole increases, not only reduce the intensity of wellhead assembly, and higher requirement be it is also proposed to the intensity of geotechnical fibre filter layer, otherwise sandstone very easily damage geotechnical fibre filter layer to the impact of geotechnical fibre filter layer, the sandstone entering recharge well can cause recharge well water seepage function to reduce; Also the technician had attempts the quantity of the permeable hole increasing wellhead assembly, and the quantity increasing permeable hole will certainly reduce the size of permeable hole, although can solve the strength problem of wellhead assembly, the amount of recharging entirety reduces; Therefore improve intensity and the reliability of the amount of recharging and guarantee wellhead assembly in this area, be that impact is from the bottleneck oozing recharge well scale development always.
Summary of the invention
In order to solve above-mentioned bottleneck problem, the invention provides the inside and outside water inlet of a kind of platform shape from oozing anti-filter recharge well wellhead assembly, this device, when wellhead assembly appearance and size is constant, can significantly improves and recharge pond conveyance capacity, anti-silting impact resistance, extend the application life of recharging pond.
The technical solution adopted for the present invention to solve the technical problems is:
This kind of inside and outside water inlet of platform shape is from oozing anti-filter recharge well wellhead assembly, described wellhead assembly comprises well lid and is fixedly installed on the geotechnical fibre filter layer outside well lid, it is characterized in that, described well lid is made up of with the well lid bottom being embedded in below ground at the bottom of river bed or canal the well lid top of the band water inlet arranged in hollow ring body groove, well lid entirety is the bottomless cone table of hollow, and the hollow ring body groove that described well lid center upper portion is provided with is the square groove with bottom land; Inside well lid upper outside, hollow ring body groove and bottom land be equipped with circular water inlet; Described well lid bottom is waterproof body; Described geotechnical fibre filter layer to be arranged at outside well lid and with well lid outside and the shape of hollow ring body groove match; Arrange a setting-out mechanism in described hollow ring body groove, described setting-out mechanism comprises the horizontal stand be fixed on hollow ring body groove inside wall, sets a upper bearing (metal) in described support; In the bottom land through hole of hollow ring body groove, set a lower bearing concentric with upper bearing (metal), a vertical shaft is by after described upper bearing (metal) and lower bearing, and connection upper end, vertical shaft upper end blade, vertical shaft lower end connects the lower end blade flowed to as towards recharge well shaft bottom.Blade rotatable lower end blade synchronization that drives under flow action in upper end is rotated, and the flow direction due to lower end blade is towards recharge well shaft bottom, therefore exerts pressure downwards to the water entered in recharge well, accelerates to recharge speed, is conducive to raising and recharges efficiency.
Owing to being provided with hollow ring body groove, inside well lid upper outside, hollow ring body groove and bottom land be equipped with circular water inlet, make water inlet area account for well lid outer surface is long-pending reaches 35% when wellhead assembly appearance and size is constant, water inlet area improves greatly, circular water inlet not only good manufacturability, and make well lid good rigidly; Well lid bottom is waterproof body, can prevent the rain flood initial stage, low discharge, surface water that water quality is relatively poor recharges aquifer.
Because well lid entirety is cone table, outside, this scheme has good stability relative to square body in the side, inclined-plane of described cone table, also can reduce current or sandstone to the impact of well lid.
The bottom land of described hollow ring body groove is flat, and this project plan comparison is easily produced.
The bottom land of described hollow ring body groove is at the bottom of reclinate arc, relative to flat, can increase inflow-rate of water turbine and adapt to low water stage river.
The height that ground at the bottom of river bed or canal is exposed on described well lid top is 0.2 ~ 0.5m, and the river that wellhead assembly can be made thus to be applicable to is wider, and obtains and best recharge effect, improves the steadiness of wellhead assembly simultaneously.
Described well lid top has along current direction and the gradient is the inclined-plane of 1%, can reduce current or sandstone to the impact at well lid top and friction, favourable to the life-span of improving wellhead assembly, also can prevent low water stage waste water injection simultaneously.
Based on such scheme, the invention has the beneficial effects as follows:
This device self has the dual-use function that in filtered water, granule foreign and surface water recharge, except well lid end face, outside lateral surface water inlet, medial surface and the bottom surface of hollow ring body groove also can intake, make water inlet area account for well lid outer surface is long-pending reaches 35% when wellhead assembly appearance and size is constant, increase the amount of recharging, and there is the function preventing low water stage waste water injection, also there is anti-filter function and certain anti-silting impact resistance, extend the application life of recharging pond, construction costs and commonly recharge pond quite or slightly high, but can reduce under the condition of the amount of recharging equally and recharge pond volume, the occupation of land of more than 3/4 can be saved.
More outstanding is, the power that the pressing mechanism that the present invention is arranged utilizes current to provide on the one hand is to drive lower blade, the water entered in recharge well is exerted pressure downwards, moisture is overcome only relies on gravity by the resistance of sandstone filler and soil particle, improve the infiltration capacity of unit interval, improve and recharge efficiency; On the other hand, because the flow of river and flow velocity have intermittence, the lower blade of pressing mechanism is caused also to present suddenly big or suddenly small form to the downward applied pressure of the water entered in recharge well thus, this is unimpeded very important for the passage of water kept between sandstone filler and soil particle, and the suddenly big or suddenly small pressure of this applying is simultaneously for improving the permeability of soil compared to not applying pressure or providing the pressure result of continued for constant all outstanding.
Therefore, the invention solves this area and improve the amount of recharging and ensure the intensity of wellhead assembly and the long-standing problem of reliability, solving intermittent river and recharge problem fast, laying a good foundation for certainly oozing recharge well scale development.
Because well lid entirety is cone table, current or sandstone outside, also can be reduced to the impact of well lid in the side, inclined-plane of described cone table.This scheme has good stability relative to square body,
Accompanying drawing explanation
Below in conjunction with drawings and Examples, invention is further illustrated:
Fig. 1 is the schematic three dimensional views of taper type wellhead assembly;
Fig. 2 is the vertical cross section schematic diagram of taper type wellhead assembly;
Fig. 3 is the horizontal profile A-A cross section, top of Fig. 2 taper type wellhead assembly;
Fig. 4 is truncated rectangular pyramids horizontal profile B-B cross section of the top hollow of Fig. 2 taper type wellhead assembly;
Fig. 5 is truncated rectangular pyramids horizontal profile C-C cross section, bottom of Fig. 2 taper type wellhead assembly;
Fig. 6 is truncated rectangular pyramids horizontal profile D-D cross section, bottom of Fig. 2 taper type wellhead assembly;
Fig. 7 is the side vertical cross section E-E cross section of Fig. 2 taper type wellhead assembly;
Fig. 8 is the side vertical cross section F-F cross section of Fig. 2 taper type wellhead assembly,
Fig. 9 is the embodiment of band pressure water structure of the present invention.
In figure: 1 well lid, 11 well lid tops, 12 well lid bottoms, 3 geotechnical fibre filter layers, 4 well lid end face water inlets, 5 well lid lateral wall water inlets, 6 well lid inside wall water inlets, 7 bottom land water inlets, 8 recharge wells, 9 recharge well filter materials, ground at the bottom of 10 river bed or canal, 201 upper end blades, 202 supports, 203 upper bearing (metal)s, 204 lower bearings, 205 vertical shafts, 206 lower end blades.
Detailed description of the invention
In Fig. 1-8, the inside and outside water inlet of this shape is from oozing anti-filter recharge well wellhead assembly, and relate to recharge well 8 and wellhead assembly thereof, wellhead assembly covers in above recharge well 8, be provided with recharge well filter material 9 in the outside of recharge well 8, described recharge well 8 is positioned at ground less than 10 at the bottom of river bed or canal.
Wellhead assembly comprises well lid 1 and geotechnical fibre filter layer 3.
The well lid top 11 of described well lid 1 with water inlet forms with the well lid bottom 12 being embedded in below ground at the bottom of river bed or canal, and well lid 1 entirety is the bottomless cone table of hollow.Well lid 1 center upper portion is provided with the hollow ring body groove (square groove) of band bottom land, is provided with circular water inlet, i.e. well lid end face water inlet 4 and well lid lateral wall water inlet 5 in well lid upper outside; Be equipped with circular water inlet at well upper part of the cover hollow ring body groove inside wall and bottom land, and correspond to well lid inside wall water inlet 6 and bottom land water inlet 7.Well lid bottom 12 sidewall is waterproof body.
Geotechnical fibre filter layer 3 to be arranged at outside well lid and with well lid outside and the shape of hollow ring body groove match.Geotechnical fibre filter layer 3 is made up of the geotextile with anti-filter function, match with well lid outer shape, top is had not have the end, can be enclosed within well lid, and be fixed on well lid sidewall bottom position, cover the part with water inlet, comprise the sidewall and bottom land that cover hollow ring body groove, filtration.
Owing to being provided with the hollow ring body groove of band bottom land, circular water inlet is equipped with at well lid upper outside, hollow ring body groove inside wall and bottom land, make water inlet area account for well lid outer surface is long-pending reaches 35% when wellhead assembly appearance and size is constant, and water inlet area improves greatly.Described well lid bottom is waterproof body, can prevent the rain flood initial stage, low discharge, surface water that water quality is relatively poor recharges aquifer.Described geotechnical fibre filter layer to be arranged at outside well lid and to match with the shape of hollow ring body groove, and geotechnical fibre filter layer can be made to be combined closely with hollow ring body groove, improves the geotechnical fibre filter layer life-span.Circular water inlet not only good manufacturability, and make well lid good rigidly.
Hollow ring body groove inside wall can adopt vertical wall, also can adopt skew wall.
Described well lid top has along current direction and the gradient is the inclined-plane of 1%, can reduce current or sandstone to well lid top impact and friction, favourable to the life-span of improving wellhead assembly, also can prevent low water stage waste water injection simultaneously.
The material of well lid 1 can adopt hard plastics or metal material etc., and entirety is the bottomless cone table of hollow.The buried height of well lid 1 should be able to ensure the stability of well lid, and the height that ground at the bottom of river bed or canal is exposed on the top of wellhead assembly is 0.2 ~ 0.5m, and the river that wellhead assembly can be made thus to be applicable to is wider, improves the steadiness of wellhead assembly simultaneously.
Bottom land is flat, and this project plan comparison is easily produced.Certainly also can be at the bottom of reclinate arc, relative to flat, inflow-rate of water turbine can be increased and adapt to low water stage river.
During construction, the first step beats recharge well 8 according to a conventional method, settles concrete filter pipe (main body of recharge well 8), filling recharge well filter material 9 outside concrete filter pipe, and carries out the techniques such as well-flushing, complete the construction of recharge well; Second step adopts the method for prefabricated or outer committee processing customized, manufactures wellhead assembly and geotechnical fibre filter layer 3; 3rd step adopt dig, lift, fill out, the method for compacting, wellhead assembly is fixed on recharge well desired location; Geotechnical fibre filter layer 3 is placed on well lid 1 by the 4th step, covers the part of all fenestrated, and is fixed by geotechnical fibre filter layer 3 in well lid bottom with pressing plate, steel nail etc.
Because well lid 1 entirety is the bottomless cone table of hollow, hollow ring body groove is square or cuboid, and the side, inclined-plane of cone table outside, thus has good steadiness, also can reduce current or sandstone to the impact of well lid simultaneously.
Fig. 9 gives the present invention the another kind of embodiment with setting-out mechanism.
Arrange a setting-out mechanism in hollow ring body groove, described setting-out mechanism comprises the support 202 of the level be fixed on hollow ring body groove inside wall, sets a upper bearing (metal) 203 in described support 202; Described support 202 can have various structures form, and such as upper bearing (metal) is set at middle part, and periphery is connected as a single entity by the well lid 1 of multiple connecting rod or junction plate and left antithesis body and right antithesis body, to support setting-out mechanism.
At the bottom land of hollow ring body groove except being provided with inlet opening, also be provided with a lower bearing and through hole is installed, the lower bearing 204 of one and upper bearing (metal) concentric is set in this through hole, one vertical shaft 205 is by after described upper bearing (metal) 203 and lower bearing 204, vertical shaft upper end is by connecting upper end blade 201 after geotechnical fibre filter layer 3, and vertical shaft lower end connects the lower end blade 206 flowed to as towards recharge well shaft bottom.Lower end blade 206 adopts axial flow pump blade inner, and upper end blade 201 adopts turbine blade, and the two is prior art.
Upper end blade 201 rotates and drives lower end blade 206 synchronous axial system via vertical shaft 205 under flow action, the flow direction due to lower end blade is the direction towards recharge well shaft bottom, therefore the water entered in recharge well is exerted pressure downwards, speed is recharged in acceleration, be conducive to raising and recharge efficiency, this recharges remarkably productive for ephermeral stream (rainwater).
The connecting rod of setting-out mechanism or junction plate can be exposed.
The connecting rod of setting-out mechanism or junction plate also can utilize geotechnical fibre filter layer 3 coated, in such cases, should between connecting rod or junction plate and the both-side opening place of elongated slot set up multiple support bars for supporting geotechnical fibre filter layer, on the connecting rod that support bar can be connected to setting-out mechanism or junction plate, also can be connected on well lid 1, it prevents geotechnical fibre filter layer from sinking.This clad structure, can reduce the bottom aggradation of sandstone at hollow ring body groove, impacts the normal work of vertical shaft 205, thus improves the reliability of setting-out institution staff.
When implementing above-mentioned setting-out mechanism, the bottom land of hollow ring body groove is preferably flat, is convenient to like this install lower bearing.When allowing, when the bottom land of hollow ring body groove is arc, also can implement.
Certainly, the present invention is not limited to the limited range of above-described embodiment.The improvement of any adaptation carried out on basis of the present invention, does not all depart from thought of the present invention, all falls in the scope of protection of the invention.
Except the technical characteristic described in manual, be the known technology of those skilled in the art.
Claims (5)
1. the inside and outside water inlet of platform shape is from oozing anti-filter recharge well wellhead assembly, described wellhead assembly comprises well lid and is fixedly installed on the geotechnical fibre filter layer outside well lid, it is characterized in that, described well lid is made up of with the well lid bottom being embedded in below ground at the bottom of river bed or canal the well lid top of the band water inlet arranged in hollow ring body groove, well lid entirety is the bottomless cone table of hollow, and the hollow ring body groove that described well lid center upper portion is provided with is the square groove with bottom land; Inside well lid upper outside, hollow ring body groove and bottom land be equipped with circular water inlet; Described well lid bottom is waterproof body; Described geotechnical fibre filter layer to be arranged at outside well lid and with well lid outside and the shape of hollow ring body groove match; Arrange a setting-out mechanism in described hollow ring body groove, described setting-out mechanism comprises the horizontal stand be fixed on hollow ring body groove inwall, sets a upper bearing (metal) in described support; In the bottom land through hole of hollow ring body groove, set a lower bearing concentric with upper bearing (metal), a vertical shaft is by after described upper bearing (metal) and lower bearing, and connection upper end, vertical shaft upper end blade, vertical shaft lower end connects the lower end blade flowed to as towards recharge well shaft bottom.
2. according to claim 1 the inside and outside water inlet of shape is from oozing anti-filter recharge well wellhead assembly, and it is characterized in that, the bottom land of described hollow ring body groove is flat.
3. according to claim 1 the inside and outside water inlet of shape is from oozing anti-filter recharge well wellhead assembly, and it is characterized in that, the bottom land of described hollow ring body groove is at the bottom of reclinate arc.
4. according to claim 1 the inside and outside water inlet of shape is from oozing anti-filter recharge well wellhead assembly, and it is characterized in that, the height that ground at the bottom of river bed or canal is exposed on described well lid top is 0.2 ~ 0.5m.
5. according to claim 1 the inside and outside water inlet of shape is from oozing anti-filter recharge well wellhead assembly, and it is characterized in that, described well lid top has along current direction and the gradient is the inclined-plane of 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410365827.2A CN104153423B (en) | 2014-07-29 | 2014-07-29 | The inside and outside water inlet of platform shape is from oozing anti-filter recharge well wellhead assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410365827.2A CN104153423B (en) | 2014-07-29 | 2014-07-29 | The inside and outside water inlet of platform shape is from oozing anti-filter recharge well wellhead assembly |
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| CN104153423A CN104153423A (en) | 2014-11-19 |
| CN104153423B true CN104153423B (en) | 2015-12-30 |
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| CN201410365827.2A Expired - Fee Related CN104153423B (en) | 2014-07-29 | 2014-07-29 | The inside and outside water inlet of platform shape is from oozing anti-filter recharge well wellhead assembly |
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| CN105507369A (en) * | 2016-01-18 | 2016-04-20 | 济南大学 | Table-type reversed-filtering recharging and water-drawing dual-purpose well head device |
| CN114855935B (en) * | 2022-06-02 | 2023-02-28 | 浙江净水楼建设投资有限公司 | Multilayer structure's water purification building construction system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0649558U (en) * | 1992-12-15 | 1994-07-08 | 東洋化学株式会社 | Water tank lid |
| EP0822296A1 (en) * | 1996-07-29 | 1998-02-04 | Hinode, Ltd. | Cover for underground structures |
| JP2011074563A (en) * | 2009-09-29 | 2011-04-14 | Sekisui Chem Co Ltd | Rainwater infiltration system |
| CN202787385U (en) * | 2012-09-10 | 2013-03-13 | 济南大学 | Well head device of multi-face water feed self-seeping filter recharge well |
| CN202969553U (en) * | 2012-12-11 | 2013-06-05 | 吉林建筑工程学院 | Environment-friendly water seepage well cover |
-
2014
- 2014-07-29 CN CN201410365827.2A patent/CN104153423B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0649558U (en) * | 1992-12-15 | 1994-07-08 | 東洋化学株式会社 | Water tank lid |
| EP0822296A1 (en) * | 1996-07-29 | 1998-02-04 | Hinode, Ltd. | Cover for underground structures |
| JP2011074563A (en) * | 2009-09-29 | 2011-04-14 | Sekisui Chem Co Ltd | Rainwater infiltration system |
| CN202787385U (en) * | 2012-09-10 | 2013-03-13 | 济南大学 | Well head device of multi-face water feed self-seeping filter recharge well |
| CN202969553U (en) * | 2012-12-11 | 2013-06-05 | 吉林建筑工程学院 | Environment-friendly water seepage well cover |
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