CN104563277B - A kind of folding door type flushing device for Drain pipe network - Google Patents
A kind of folding door type flushing device for Drain pipe network Download PDFInfo
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- CN104563277B CN104563277B CN201410736573.0A CN201410736573A CN104563277B CN 104563277 B CN104563277 B CN 104563277B CN 201410736573 A CN201410736573 A CN 201410736573A CN 104563277 B CN104563277 B CN 104563277B
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000005086 pumping Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 238000009825 accumulation Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 206010016807 Fluid retention Diseases 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/007—Devices providing a flushing surge
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The present invention relates to a kind of folding door type flushing device for Drain pipe network, Drain pipe network includes drainage pipeline, flushing device includes interconnective collapsible pipe flushing door and drives assembly, collapsible pipe flushing door includes fixed support, folding rack and the flushing door being sequentially connected with, folding rack is connected with driving assembly, and fixed support is located at drainage pipeline top；During work, drive assembly to control to rinse door by folding rack to close to raise drainage pipeline middle water level, when water level reaches to rinse desired height, driving assembly to control to rinse door by folding rack and open, in drainage pipeline, the water of savings is rinsed desilting to drainage pipeline.Compared with prior art, the present invention has simple in construction, is prone to advantages such as constructing, developing result is good.
Description
Technical field
The present invention relates to the flushing dredging technology in a kind of municipal drainage field, especially relate to a kind of folding door type flushing device for Drain pipe network.
Background technology
Sewage flow velocity after the branch drain that the gradient is big flows into the arterial drainage that the gradient is little, caliber is bigger, pipe duct, box culvert reduces, and the silt and the suspended solids that carry in sewage easily deposit, and cause the cross-section of river to reduce, and pipeline feed flow reduces.The polluter of this Outer Tube alluvial is easily generated poisonous, harmful, corrosive gas, and environment is impacted by toxic and harmful, and drainage pipeline is caused corrosion by corrosive gas, affects the design service life of drainage pipeline.If the alluvial of cleaning pipeline, not only will affect the normal operation in residents ' health and city, but also can cause environmental pollution not in time.Therefore, drainage pipeline desilting is an of crucial importance and hard work of municipal sector.
Domestic and international application mainly has the methods such as high-pressure water jet desilting method, winch desilting method, artificial desilting method in the dredging method of drainage pipeline at present.Existing said method is substantially and designs for small-bore pipeline desilting, some technology cost of labor is high, and there is potential safety hazard, some technology is not suitable for applying in big-diameter pipeline, pipe duct, box culvert, some technology takes up room big at large-caliber drainage pipeline, pipe duct, box culvert when installing, have that operating cost is too high, desilting scarce capacity, there is secondary pollution and do not adapt to the limitation such as MODEL OVER COMPLEX TOPOGRAPHY during operation.
Chinese patent CN 103806525 A discloses a kind of gate-type for storm detention tank from flusher: include a storm detention tank, the plane of storm detention tank is rectangular, and it is divided into water storage chamber the most successively, gallery and gathering ground, it is respectively equipped with rainwater water inlet pipe and outlet pipe in the side of gathering ground, in the bottom of gathering ground, one proof submersible sand discharging pump is installed, the discharge pipe of proof submersible sand discharging pump connects with outlet pipe, water storage chamber is provided with a flushing door with the partition of gallery, rinsing can be at bottom connection water storage chamber and gallery when door is opened, and on the top cover of water storage chamber upper end, it is additionally provided with one for controlling to rinse the hydraulic control cabinet of door.But this gate-type needs the bottom rinsing object to transform from flusher, difficulty of construction is big, and maintenance difficulties is the biggest.
Therefore, the science and technology research and development of this area and engineers and technicians be devoted to develop a kind of auto-flushing, simple in construction, take up room little, cost performance is high, energy-conserving and environment-protective, flush efficiency are high and operation maintenance drainage pipeline easily, pipe duct, the collapsible pipe flushing door of box culvert and method.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of folding door type flushing device for Drain pipe network is provided.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of folding door type flushing device for Drain pipe network, described Drain pipe network includes drainage pipeline, described flushing device includes interconnective collapsible pipe flushing door and drives assembly, described collapsible pipe flushing door includes fixed support, folding rack and the flushing door being sequentially connected with, described folding rack is connected with driving assembly, and described fixed support is located at drainage pipeline top；
During work, drive assembly to control to rinse door by folding rack to close to raise drainage pipeline middle water level, when water level reaches to rinse desired height, drive assembly to control to rinse door by folding rack to open, in drainage pipeline, the water of savings is rinsed desilting to drainage pipeline, flushing water used by described flushing device is that described drainage pipeline is collected and sewage, waste water or the rainwater of conveying, and the keying speed of described flushing door is at 3m～8m/min.
Described folding rack includes that the first folding arm and second folds arm, described first one end folding arm is connected with support bracket fastened side, the other end is connected with rinsing door, described second one end folding arm is connected with support bracket fastened opposite side, the other end is slidably connected with rinsing door, and described first folds arm is also connected with driving assembly.
Described flushing door is provided with and folds, for second, the guide rail that arm slides.
Described guide rail head end is located at flushing header, and tail end is provided with bottom flushing door, and described first folds arm is connected to rinse header；
During flushing door unlatching, the first folding arm and second folds arm and is all flipped up, and the second folding arm slides into along guide rail flushing header certainly and rinses bottom door simultaneously, and then realizes opening of flushing door.
Described first folds arm is provided with limit buckle with the junction rinsing door, and the head end of described guide rail is provided with limit buckle.
Described flushing door is arch, and the string of this arch is the top rinsing door, and arc is the bottom rinsing door, and described flushing edge outdoors is provided with waterproof sealing assembly.
Described flushing door is semicircle.
Described fixed support, folding rack, flushing door are stainless steel, sturdy and durable.
Described driving assembly includes automatic control unit, liquidometer and the hydraulic pump being sequentially connected with, electromagnetic valve, hydraulic cylinder, described hydraulic cylinder is connected with folding rack, described liquidometer is located in drainage pipeline, and described automatic control unit is connected with hydraulic pump, electromagnetic valve and liquidometer respectively.
Described automatic control unit, hydraulic pump, electromagnetic valve are respectively positioned on outside described drainage pipeline and work independently in room.
Described drainage pipeline includes arterial drainage and branch drain, the outfan of described branch drain is connected with arterial drainage, the head end of described arterial drainage and the head end of branch drain are equipped with the flushing device rinsed for source, are provided with the flushing device rinsed for midway in the middle part of described arterial drainage.
Described Drain pipe network also includes that pumping plant sump and received well, the outfan of described arterial drainage are connected with pumping plant sump, and described branch drain is connected with arterial drainage by received well.
Described drainage pipeline uses surface anticorrosive and smooth treatment.
Compared with prior art, the invention have the advantages that
1) stopping that owing to have employed gate-type the mode of water-retention obtains wash water, therefore this equipment is applied widely for applicable caliber and the bottom gradient of the drainage pipeline of cleaning.
2) owing to being provided with the flushing device that midway is rinsed in the centre of Drain pipe network, therefore rinse desilting pipeline distance, relay can rinse long-distance pipe.
3) flushing water derives from drainage pipeline, has saved water resource.
4) the structure deft design of folding rack, simple and practical, be easily installed, it is not necessary to construct bottom drainage pipeline.
5) high intensity, high performance water-impervious black box improve the sealing between flushing door and the drainage pipeline of collapsible pipe flushing door.
Accompanying drawing explanation
Structural representation when Fig. 1 is the closedown of the present invention collapsible pipe flushing door；
Fig. 2 is the present invention collapsible pipe flushing door structural representation when opening；
Fig. 3 is for rinsing door schematic diagram；
Fig. 4 is present configuration schematic diagram；
Fig. 5 is the folding door type flushing device for Drain pipe network in an embodiment and the laying of Drain pipe network, connection diagram；
Wherein: 1, automatic control unit, 2, hydraulic pump, 3, electromagnetic valve, 4, hydraulic cylinder, 5, collapsible pipe flushing door, 6, fixed support, 7, guide rail, 8, door is rinsed, 9, liquidometer, 10, drainage pipeline, 11, limit buckle, 12, arterial drainage, 13, branch drain, 14, received well, 15, pumping plant sump, 16, source flushing flushing device, 17, midway flushing flushing device, 18, first folds arm, and 19, second folds arm.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is implemented premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
A kind of folding door type flushing device for Drain pipe network, Drain pipe network includes drainage pipeline 10, as shown in Figure 4, flushing device includes interconnective collapsible pipe flushing door 5 and drives assembly, as depicted in figs. 1 and 2, collapsible pipe flushing door 5 includes that fixed support 6, folding rack and the flushing door 8 being sequentially connected with, folding rack are connected with driving assembly, and fixed support 6 is located at drainage pipeline 10 napex；
During work, drive assembly to control to rinse door 8 by folding rack to close to raise drainage pipeline 10 middle water level, when water level reaches to rinse desired height, drive assembly to control to rinse door 8 by folding rack to open, in drainage pipeline 10, the water of savings is rinsed desilting to drainage pipeline 10, flushing water used by flushing device is sewage, waste water or the rainwater that drainage pipeline 10 is collected and carried, and rinses the keying speed of door at 3m～8m/min.
As depicted in figs. 1 and 2, folding rack includes that the first folding arm and second folds arm, first one end folding arm is connected with the side of fixed support 6, the other end is connected with rinsing door 8, second one end folding arm is connected with the opposite side of fixed support 6, the other end is slidably connected with rinsing door 8, and first folds arm is also connected with driving assembly.
It is provided with for the second guide rail 7 folding arm slip as it is shown on figure 3, rinse door 8.
Guide rail 7 head end is located at flushing door 8 top, and tail end is provided with bottom flushing door 8, and first folds arm is connected to rinse door 8 top；
When flushing door 8 is opened, the first folding arm and second folds arm and is all flipped up, and the second folding arm extremely rinses bottom door 8 along guide rail 7 from flushing door 8 top slide simultaneously, and then opening of door 8 is rinsed in realization.
First folds arm is provided with limit buckle with the junction rinsing door 8, and the head end of guide rail 7 is provided with limit buckle, and when rinsing closed mode, limit buckle can effectively prevent current from being washed open by flushing door 8.
Rinsing door 8 is arch, and the string of this arch is the top rinsing door 8, and arc is the bottom rinsing door 8, rinses door 8 outer rim and is provided with high intensity, high performance waterproof sealing assembly.
It is semicircle for rinsing door 8, and after described flushing door 8 is closed, drainage pipeline 10 will not be blocked because rinsing door 8 fault, has ensured that the safety of drainage pipeline 10 is unobstructed.
Fixed support 6, folding rack, flushing door 8 are stainless steel, sturdy and durable.
Assembly is driven to include automatic control unit 1, liquidometer 9 and the hydraulic pump 2 being sequentially connected with, electromagnetic valve 3, hydraulic cylinder 4, hydraulic cylinder 4 is connected with folding rack, drainage pipeline 10 top is located at by liquidometer 9, automatic control unit 1 is connected with hydraulic pump 2, electromagnetic valve 3 and liquidometer 9 respectively, and automatic control unit 1 automatically controls hydraulic pressure
Pump 2, electromagnetic valve 3 and the keying of hydraulic cylinder 4, play control flushing door 8 and pack up and relieving process, and the flushing desilting process of drainage pipeline 10, and wherein, liquidometer 9 is ultrasonic level gage.
Automatic control unit 1, hydraulic pump 2, electromagnetic valve 3 are respectively positioned on drainage pipeline 10 outside and work independently in room, and the regular maintenance of flushing device only needs to safeguard hydraulic pump 2, electromagnetic valve 3, hydraulic cylinder 4 and black box.
Drainage pipeline 10 includes arterial drainage 12 and branch drain 13, the outfan of branch drain 13 is connected with arterial drainage 12, the head end of arterial drainage 12 and the head end of branch drain 13 are equipped with the flushing device 16 rinsed for source, are provided with the flushing device 17 rinsed for midway in the middle part of arterial drainage 12.
Drain pipe network also includes pumping plant sump 15 and received well 14, and the outfan of arterial drainage 12 is connected with pumping plant sump 15, and branch drain 13 is connected with arterial drainage 12 by received well 14.
Drainage pipeline 10 uses surface anticorrosive and after smooth treatment, can further improve the cleaning erosion and deposition effect of flushing device.
The above-mentioned folding door type flushing device for Drain pipe network includes, including heavy rain pattern, light rain pattern, preventative rinse mode and four kinds of patterns of rinse mode routinely, wherein, heavy rain pattern comprises the following steps:
The folding rack of the most collapsible pipe flushing door 5, flushing door 8 are collapsed state.
B., during heavy rain, drainage pipeline 10, by the sewage collected and rainwater, is rinsed desilting to drainage pipeline 10.
Light rain pattern comprises the following steps:
The folding rack of the most collapsible pipe flushing door 5, flushing door 8 are collapsed state.
B. automatic control unit 1 controls hydraulic pump 2, electromagnetic valve 3 and hydraulic cylinder 4 and starts, and the folding rack of hydraulic-drive folding formula pipe flushing door 5, rinses door 8 and is opened to retain position.
C., during light rain, sewage and rainwater are rinsed door 8 and retain in drainage pipeline 10.
D. when ultrasonic level gage 9 induction pipe water level reaches to control to rinse desilting water level, automatic control unit 1 controls hydraulic pump 2, electromagnetic valve 3 and hydraulic cylinder 4 and works, hydraulic-drive folding support, flushing door 8 to collapsed state.
E. in drainage pipeline 10, sewage and the rainwater of accumulation are rinsed desilting to drainage pipeline 10.
Preventative rinse mode comprises the following steps:
The folding rack of the most collapsible pipe flushing door 5, flushing door 8 are collapsed state.
B. according to drainage pipeline 10 deposit testing result, preventative rinse mode is started.
C. automatic control unit 1 controls hydraulic pump 2, electromagnetic valve 2 and hydraulic cylinder 3 and starts, and the folding rack of hydraulic-drive folding formula pipe flushing door 5, rinses door 8 and is opened to retain position.
D. sewage is rinsed door 8 and retains in drainage pipeline 10.
E. when liquidometer 9 induction pipe water level reaches preventative flushing desilting water level, automatic control unit 1 controls hydraulic pump 2, electromagnetic valve 3 and hydraulic cylinder 4 and works, hydraulic-drive folding support, flushing door 8 to collapsed state.
F. in drainage pipeline 10, the sewage of accumulation is rinsed desilting to drainage pipeline 10.
Flushing device flow shear needed for preventative flushing desilting is 3N/m2。
Rinse mode comprises the following steps routinely:
The folding rack of the most collapsible pipe flushing door 5, flushing door 8 are collapsed state.
B. according to the flushing cycle routinely set, automatic control unit 1 periodically controls hydraulic pump 2, electromagnetic valve 3 and hydraulic cylinder 4 and starts, and the folding rack of hydraulic-drive folding formula pipe flushing door 5, flushing door 8 are opened to retain position.
C. sewage is rinsed door 8 and retains in drainage pipeline.
D. when liquidometer 9 sense impounded water levels reach rinse mode water level routinely time, automatic control unit 1 controls hydraulic pump 2, electromagnetic valve 3 and hydraulic cylinder 4 and works, hydraulic-drive folding support, rinse door 8 to collapsed state.
E. in drainage pipeline 10, the sewage of accumulation is rinsed desilting to drainage pipeline 10.
Flushing device required flow shear under rinse mode routinely is 5N/m2。
Claims (8)
1. the folding door type flushing device for Drain pipe network, described Drain pipe network includes drainage pipeline, it is characterized in that, described flushing device includes interconnective collapsible pipe flushing door and drives assembly, described collapsible pipe flushing door includes fixed support, folding rack and the flushing door being sequentially connected with, described folding rack is connected with driving assembly, and described fixed support is located at drainage pipeline top
During work, drive assembly to control to rinse door by folding rack to close to raise drainage pipeline middle water level, when water level reaches to rinse desired height, driving assembly to control to rinse door by folding rack and open, in drainage pipeline, the water of savings is rinsed desilting to drainage pipeline；
Described folding rack includes that the first folding arm and second folds arm, described first one end folding arm is connected with support bracket fastened side, the other end is connected with rinsing door, described second one end folding arm is connected with support bracket fastened opposite side, the other end is slidably connected with rinsing door, and described first folds arm is also connected with driving assembly；
Described flushing door is provided with and folds, for second, the guide rail (7) that arm slides.
A kind of folding door type flushing device for Drain pipe network the most according to claim 1, it is characterised in that described guide rail (7) head end is located at flushing header, tail end is provided with bottom flushing door, and described first folds arm is connected to rinse header；
During flushing door unlatching, the first folding arm and second folds arm and is all flipped up, and the second folding arm slides into along guide rail 7 flushing header certainly and rinses bottom door simultaneously, and then realizes opening of flushing door.
A kind of folding door type flushing device for Drain pipe network the most according to claim 2, it is characterised in that described first folds arm is provided with limit buckle with the junction rinsing door, and the head end of described guide rail (7) is provided with limit buckle.
A kind of folding door type flushing device for Drain pipe network the most according to claim 2, it is characterised in that described flushing door is arch, the string of this arch is the top rinsing door, and arc is the bottom rinsing door, and described flushing edge outdoors is provided with waterproof sealing assembly.
A kind of folding door type flushing device for Drain pipe network the most according to claim 4, it is characterised in that described flushing door is semicircle.
A kind of folding door type flushing device for Drain pipe network the most according to claim 1, it is characterized in that, described driving assembly includes automatic control unit, liquidometer and the hydraulic pump being sequentially connected with, electromagnetic valve, hydraulic cylinder, described hydraulic cylinder is connected with folding rack, described liquidometer is located in drainage pipeline, and described automatic control unit is connected with hydraulic pump, electromagnetic valve and liquidometer respectively.
A kind of folding door type flushing device for Drain pipe network the most according to claim 1, it is characterized in that, described drainage pipeline includes arterial drainage and branch drain, the outfan of described branch drain is connected with arterial drainage, the head end of described arterial drainage and the head end of branch drain are equipped with the flushing device rinsed for source, are provided with the flushing device rinsed for midway in the middle part of described arterial drainage.
A kind of folding door type flushing device for Drain pipe network the most according to claim 7, it is characterized in that, described Drain pipe network also includes that pumping plant sump and received well, the outfan of described arterial drainage are connected with pumping plant sump, and described branch drain is connected with arterial drainage by received well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736573.0A CN104563277B (en) | 2014-12-04 | 2014-12-04 | A kind of folding door type flushing device for Drain pipe network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410736573.0A CN104563277B (en) | 2014-12-04 | 2014-12-04 | A kind of folding door type flushing device for Drain pipe network |
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| Publication Number | Publication Date |
|---|---|
| CN104563277A CN104563277A (en) | 2015-04-29 |
| CN104563277B true CN104563277B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410736573.0A Active CN104563277B (en) | 2014-12-04 | 2014-12-04 | A kind of folding door type flushing device for Drain pipe network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106836457A (en) * | 2017-03-07 | 2017-06-13 | 北京城市排水集团有限责任公司第管网运营分公司 | A kind of urban underground water drainage pipe net self-stripping system |
| CN107350230A (en) * | 2017-08-18 | 2017-11-17 | 北京北排装备产业有限公司 | A kind of pipeline self-stripping unit and its application method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19901993C1 (en) * | 1999-01-20 | 2000-04-20 | Klaus Ulrich Giehl | Flush feed for rain drain has flush opening closed by flap with chamber connected to stored fluid volume |
| DE202005009130U1 (en) * | 2005-06-06 | 2005-09-01 | Lorenzen, Arne, Dr. | Automatic waste flow pipe cleaning system, to clear deposits and sediment, has a shaft containing a flushing pipe on a flexible section and a suspended weight to raise it on a low flow and release the build-up in a torrent burst |
| CN200971489Y (en) * | 2006-10-28 | 2007-11-07 | 中国科学技术大学 | Turning gate |
| CN202265900U (en) * | 2011-09-27 | 2012-06-06 | 南通华新环保设备工程有限公司 | Channel type unpowered flushing gate |
| CN203782657U (en) * | 2014-04-15 | 2014-08-20 | 程斌 | Movable folding type water retaining device |
| CN204001144U (en) * | 2014-06-27 | 2014-12-10 | 武汉圣禹排水系统有限公司 | Clasp type hydraulic automatism rinses door |
-
2014
- 2014-12-04 CN CN201410736573.0A patent/CN104563277B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19901993C1 (en) * | 1999-01-20 | 2000-04-20 | Klaus Ulrich Giehl | Flush feed for rain drain has flush opening closed by flap with chamber connected to stored fluid volume |
| DE202005009130U1 (en) * | 2005-06-06 | 2005-09-01 | Lorenzen, Arne, Dr. | Automatic waste flow pipe cleaning system, to clear deposits and sediment, has a shaft containing a flushing pipe on a flexible section and a suspended weight to raise it on a low flow and release the build-up in a torrent burst |
| CN200971489Y (en) * | 2006-10-28 | 2007-11-07 | 中国科学技术大学 | Turning gate |
| CN202265900U (en) * | 2011-09-27 | 2012-06-06 | 南通华新环保设备工程有限公司 | Channel type unpowered flushing gate |
| CN203782657U (en) * | 2014-04-15 | 2014-08-20 | 程斌 | Movable folding type water retaining device |
| CN204001144U (en) * | 2014-06-27 | 2014-12-10 | 武汉圣禹排水系统有限公司 | Clasp type hydraulic automatism rinses door |
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| CN104563277A (en) | 2015-04-29 |
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Effective date of registration: 20240325 Address after: No. 4-3, Lane 199, Yefan Road, Yexie Town, Songjiang District, Shanghai, August 2016 Patentee after: Shanghai Jiwa Environmental Protection Technology Co.,Ltd. Country or region after: China Address before: Room 153, F Zone, 1st Floor, Building 1, No. 1362 Huqingping Road, Qingpu District, Shanghai, 2017 Patentee before: WASCH ENVIRONMENTAL ENGINEERING (SHANGHAI) CO.,LTD. Country or region before: China |