CN104790517B - A kind of early-stage rainwater overflow grating of band vacuum draw slag removing function - Google Patents
A kind of early-stage rainwater overflow grating of band vacuum draw slag removing function Download PDFInfo
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- CN104790517B CN104790517B CN201510199114.8A CN201510199114A CN104790517B CN 104790517 B CN104790517 B CN 104790517B CN 201510199114 A CN201510199114 A CN 201510199114A CN 104790517 B CN104790517 B CN 104790517B
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- 239000002893 slag Substances 0.000 title claims abstract description 19
- 238000005192 partition Methods 0.000 claims abstract description 19
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 8
- 231100000719 pollutant Toxicity 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000000605 extraction Methods 0.000 claims description 20
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 13
- 238000012423 maintenance Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 206010010904 Convulsion Diseases 0.000 description 1
- 241000216843 Ursus arctos horribilis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The present invention relates to the early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function, including: overflow partition wall, it is located in sump and sump hydroecium is divided into main hydroecium and overflow hydroecium；Grid, is located at overflow partition wall top, for intercepting the particulate form pollutant in rainwater；Also include: vacuum suction apparatus, be located at and catchment on the borehole wall, for aspirating the residue removed on grid.Compared with prior art, the residue on grid can be absorbed by vacuum suction apparatus of the present invention, uses the mode of vacuum draw can obtain more preferably residue elimination effect.
Description
Technical field
The present invention relates to the pollution reduction technology in a kind of municipal drainage field, especially relate to a kind of band vacuum draw
The early-stage rainwater overflow grating of slag removing function.
Background technology
For Combined Municipal drainage system, exceed the dam early-stage rainwater of ability of main sewer and be directly discharged into river, city
Road；For Urban Distributed Drainage System, the early-stage rainwater that rainfall is formed also is directly discharged into city river.Due to just
Phase rainwater carries the polluter of a large amount of particulate form, without river, the early-stage rainwater of any process in line entrance city
During road, quality of water environment and the ecological environment in river course will be caused serious pollution.At present, dirty for early-stage rainwater
The governing problem of dye, often uses the engineering measures such as storm detention tank to dam, store early-stage rainwater.But it is subject to
Place, economy, running and the restriction of the factor such as maintenance, it is very big that the volume of storm detention tank can not be made, therefore,
The pollution problem of early-stage rainwater is the most serious.Use overflow grating that the granulating material in early-stage rainwater is blocked
Cut, be the new technique emerged in large numbers in recent years.But technically there are particulate form pollutant in various degree in existing overflow grating
Efficiency of damming is low, self-cleaning weak effect, equipment are fragile, safeguard, installation difficulty is big and the high deficiency of construction costs.
Such as Authorization Notice No. is that the Chinese patent of CN 203878735 U discloses a kind of unpowered from clear overflow lattice
Grating system, including for covering the grid in discharge outlet, the end face of grid offers some rows for draining
Tank, the end face entirety of grid outwards arches upward and forms cylindrical arc curve.This utility model in use, changes
Becoming rubbish to cover on grid end face in the way of the contact of face, the mode becoming point cantact or linear contact lay is blocked in the past
Cut in the cylindrical arc curve of this utility model grid, be conducive to intercepting more rubbish.But, circular arc lattice
When spacing between grizzly bar is excessive, this utility model possibly cannot realize the effect of overflow grating, if spacing is too small,
Because there is no extra cleaning equipment, it is impossible to clean thoroughly, when therefore the dirt in rainwater is more, may send out
Raw blocking.
Therefore, the science and technology research and development of this area and engineers and technicians be devoted to develop a kind of particulate form dam efficiency high,
The band that self-cleaning is effective, the installation good, easy of design simple in construction, stabilization of equipment performance is safeguarded and construction costs is cheap is true
The early-stage rainwater overflow grating of empty suction slag removing function 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 provide a kind of for sump
The early-stage rainwater overflow grating of band vacuum draw slag removing function.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of early-stage rainwater overflow grating of band vacuum draw slag removing function, including:
Overflow partition wall, is located in sump and sump hydroecium is divided into main hydroecium and overflow hydroecium；
Grid, is located at overflow partition wall top, for intercepting the particulate form pollutant in rainwater；
Also include:
Vacuum suction apparatus, is located at and catchments on the borehole wall, for aspirating the residue removed on grid.
Described main hydroecium is provided with interflow water inlet pipe and the outlet pipe that dams；
Described vacuum suction apparatus includes:
Cavity；
Suction opeing, is provided with multiple altogether, is located on cavity and in the linear alignment, passes through for residue and enter cavity；
Evacuated tube, is connected with cavity and the outlet pipe that dams respectively, for arranging the residue in cavity to the outlet pipe that dams.
Described grid is semicircle long plate shape grid, and level is located at overflow partition wall top and axis and overflow partition wall
Parallel, described vacuum suction apparatus also includes for fixed cavity and controls the rotator that suction opeing swings；
Described rotator controls suction opeing and swings, to absorb the residue on semicircle long plate shape grid diverse location.
Axis when described suction opeing swings and the dead in line of semicircle long plate shape grid.
The semi-cylindrical hill of described grid is arranged on overflow partition wall on the side.
Described vacuum suction apparatus also includes:
Extraction fan, is located in evacuated tube, is used for driving residue to enter cavity and row to the outlet pipe that dams；
Control assembly, be connected with extraction fan and rotator respectively, be used for controlling extraction fan and rotator functions.
Described control assembly includes automatic control unit, trigger and interconnective vacuum pump and electromagnetic valve, institute
Stating automatic control unit to be connected with trigger, vacuum pump and electromagnetic valve respectively, described electromagnetic valve is connected with rotator,
Described trigger is connected with extraction fan.
Described cavity is provided with multiple venthole, and described evacuated tube includes emptying main and multiple emptying arm, described
One end of emptying arm connects one to one with venthole respectively, and the other end is all connected with the input emptying main,
The outfan of described emptying main is connected with the outlet pipe that dams.
The number of described venthole is consistent with the number of suction opeing, and described venthole is that the linear alignment is located on cavity,
And with the position one_to_one corresponding of suction opeing.
Described overflow hydroecium is provided with overflow outlet pipe, and this overflow outlet pipe is connected with city receiving water body.
Compared with prior art, the invention have the advantages that
1) residue on grid can be absorbed by vacuum suction apparatus, and the mode using vacuum draw is permissible
Obtain more preferably residue elimination effect.
2) multiple suction opeings are all located on cavity and in the linear alignment, can meet the grid for different length
Adaptation, the existence of cavity simultaneously can conveniently increase again cushion space, and that plays into water or air inlet is steady.
3) grid is semicircle long plate shape grid, can increase surface area, and granule in overflow water is removed in strengthening
The ability of state pollutant.
4) axis when suction opeing swings and the dead in line of semicircle long plate shape grid, it is possible to achieve suction opeing begins
It is close to grid eventually and carries out the absorption of residue.
5) emptying arm one end respectively with venthole one_to_one corresponding downlink connection, it is possible to achieve each venthole
Aeroperformance consistent.
6) number of venthole and the number of suction opeing are consistent, and venthole is that the linear alignment is located on cavity, and with
The position one_to_one corresponding of suction opeing, can make the aeroperformance carried out at each suction opeing consistent.
Accompanying drawing explanation
Fig. 1 is sump and overflow grating layout structure schematic cross-section；
Fig. 2 is sump and overflow grating layout structure schematic top plan view；
Fig. 3 is the structural representation of vacuum suction apparatus；
Fig. 4 is the fragmentary perspective structural representation of grid；
Fig. 5 is the part-structure schematic diagram controlling assembly；
Wherein: 1, automatic control unit, 2, vacuum pump, 3, electromagnetic valve, 4, rotator, 5, grid,
6, vacuum suction apparatus, 7, suction opeing, 8, overflow partition wall, 9, sump, 10, interflow water inlet pipe, 11,
Dam outlet pipe, 12, current limiting component, 13, overflow outlet pipe, 14, the highest operating water level of overflow grating, 15,
Overflow grating minimum operation water level, 16, turnover staircase, 17, ultrasonic level gage, 18, main hydroecium, 19, overflow
Streamer chamber, 20, cavity, 21, emptying arm, 22, emptying main.
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 with the technology of the present invention side
Implement premised on case, give detailed embodiment and concrete operating process, but the protection model of the present invention
Enclose and be not limited to following embodiment.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function, as depicted in figs. 1 and 2, including overflow
Partition wall 8, grid 5 and vacuum suction apparatus 6, overflow partition wall 8 is located in sump 9 and by sump 9 water
Room is divided into main hydroecium 18 and overflow hydroecium 19, by 8 points of overflow partition wall bottom main hydroecium 18 and overflow hydroecium 19
Every, top is connected by grid 5, and main hydroecium 18 is provided with interflow water inlet pipe 10 and the outlet pipe 11 that dams,
Overflow hydroecium 19 is provided with overflow outlet pipe 13, and grid 5 is located at overflow partition wall 8 top, is used for intercepting rainwater
In particulate form pollutant, vacuum suction apparatus 6 is located on sump 9 wall, is used for aspirating removing grid 5
On residue, the gap of grid 5 is 4.1～7.9 millimeters, the most preferably 6 millimeters, by high-strength stainless steel
Make.
Sump 9 also includes that automatic current limiting assembly 12, automatic current limiting assembly 12 are located at dam outlet pipe 11 and master
Hydroecium 18 junction, is additionally provided with turnover staircase 16, it is simple to staff enters bottom sump 9 in sump 9
Carry out the maintenance of sump 9.
As it is shown on figure 3, vacuum suction apparatus 6 includes:
Cavity 20；
Suction opeing 7, is provided with multiple altogether, as shown in Figure 4, is located on cavity 20 and in the linear alignment, for residual
Slag passes through and enters cavity 20；
Evacuated tube, is connected with cavity 20 and the outlet pipe 11 that dams respectively, for by cavity 20 residue arrange to
Dam outlet pipe 11, arranges to sewage treatment plant eventually through municipal administration blow-off line.
Grid 5 is semicircle long plate shape grid 5, level be located at overflow partition wall 8 top and axis and overflow every
Wall 8 is parallel, and vacuum suction apparatus 6 also includes for fixed cavity 20 and controls the rotator that suction opeing 7 swings
4；
Rotator 4 controls suction opeing 7 and makees 180 degree of swings, to absorb semicircle long plate shape grid 5 diverse location
On residue, during swing, suction opeing 7 is all the time against grid 5.
Axis when suction opeing 7 swings and the dead in line of semicircle long plate shape grid.
The semi-cylindrical hill of grid 5 is arranged on overflow partition wall 8 on the side.
Vacuum suction apparatus 6 also includes:
Extraction fan, is located in evacuated tube, is used for driving residue to enter cavity 20 and row to the outlet pipe 11 that dams；
Control assembly, be connected with extraction fan and rotator 4 respectively, be used for controlling extraction fan and rotator 4 works.
Overflow grating also includes Power Supply Assembly, and this Power Supply Assembly includes the hydraulic turbine, electromotor and the electric power storage being sequentially connected with
Pond, the hydraulic turbine is located at overflow outlet pipe 13 and outlet pipe 11 junction of damming, electromotor and accumulator respectively with
Control assembly and extraction fan connects.
As it is shown in figure 5, control assembly to include automatic control unit 1, trigger and interconnective vacuum pump 2
With electromagnetic valve 3, automatic control unit 1 is connected with trigger, vacuum pump 2 and electromagnetic valve 3 respectively, electromagnetic valve 3
Being connected with rotator 4, trigger is connected with extraction fan, automatic control unit 1 when rainfall according to drainage system collection
Well 9 (the most main hydroecium 18) middle water level height regulates the work frequency of the rotator 4 of vacuum suction apparatus 6
The wind-force size of rate and extraction fan, the liquid level information in sump 9 is recorded by ultrasonic level gage 17, and this surpasses
Sonic liquid-level meter 17 is connected with automatic control unit 1, additionally, automatic control unit 1, vacuum pump 2, electromagnetic valve
3 are respectively positioned on working independently with in room outside drainage system sump 9..
Vacuum pump 2, electromagnetic valve 3, rotator 4, grid 5, vacuum aspirator 6 and the parametric type of evacuated tube 7
Number determine according to the design parameter of the sewerage system area serviced and early-stage rainwater overfall facility.
Cavity 20 is provided with multiple venthole, and evacuated tube includes emptying main 22 and multiple emptying arm 21, row
One end of empty arm 21 connects one to one with venthole respectively, and the other end all connects with the input emptying main 22
Connecing, the outfan of emptying main 22 is connected with the outlet pipe 11 that dams.
The number of venthole is consistent with the number of suction opeing 7, and venthole is that the linear alignment is located on cavity 20, and
Position one_to_one corresponding with suction opeing 7.
Overflow hydroecium 19 is provided with overflow outlet pipe 13, and this overflow outlet pipe 13 is connected with city receiving water body.
The using method of above-mentioned overflow grating specifically includes the pattern routinely during non-rainfall pattern, rainfall and fall
Preventative automatically cleaning pattern Three models between the Pluvial:
Wherein, non-rainfall pattern specifically includes following steps:
A. the water level during ultrasonic level gage 17 detects main hydroecium 18 in real time, when water level runs less than overflow grating
During lowest water level 15, automatic control unit 1 controls vacuum pump 2, electromagnetic valve 3 and trigger and is in stopping work
Make state；
B. according to the preventative overflow grating automatically cleaning cycle set, automatic control unit 1 periodically controls vacuum pump
2, electromagnetic valve 3 and trigger start, and then drive rotator 4 and extraction fan to start, and rotator 4 drives convulsion
Mouth makees 180 degree of swings by setting nominal frequencies, grid 5 carries out maintenance and cleans.
Pattern routinely during rainfall specifically includes following steps:
A., after rainfall starts, ultrasonic level gage 17 detects the water level in main hydroecium 18 in real time, when water level is higher than
When overflow grating runs lowest water level 15, grid 5 starts the particulate form pollutant intercepting in early-stage rainwater.
B. according to the automatically cleaning cycle of overflow grating routinely set, automatic control unit 1 controls vacuum pump 2, electricity
Magnet valve 3 and trigger start, and then drive rotator 4 and extraction fan to start, and rotator 4 drives suction opeing to press
Set nominal frequencies and make 180 degree of swings, grid 5 is carried out maintenance cleaning.
C. the residue got off is cleaned on grid 5, successively via cavity 20, emptying arm 21 and emptying main
22 enter the outlet pipe 11 that dams, and through damming, outlet pipe 11 is delivered to sewage treatment plant.
D. rainfall stops, and ultrasonic level gage 17 detects the water level in main hydroecium 18 in real time, when water level is less than overflowing
When stream grid runs lowest water level 15, automatic control unit 1 controls vacuum pump 2, electromagnetic valve 3 and trigger
Quit work.
Preventative automatically cleaning pattern during rainfall specifically includes following steps:
A., after rainfall starts, ultrasonic level gage 17 detects the water level in main hydroecium 18 in real time, when water level is higher than
When overflow grating runs lowest water level 15, grid 5 starts the particulate form pollutant intercepting in early-stage rainwater.
B. according to the automatically cleaning cycle of overflow grating routinely set, automatic control unit 1 controls vacuum pump 2, electricity
Magnet valve 3 and trigger start, and then drive rotator 4 and extraction fan to start, and rotator 4 drives suction opeing to press
Set nominal frequencies and make 180 degree of swings, grid 5 is carried out maintenance cleaning.
C. the residue got off is cleaned on grid 5, successively via cavity 20, emptying arm 21 and emptying main
22 enter the outlet pipe 11 that dams, and through damming, outlet pipe 11 is delivered to sewage treatment plant.
D. the water level during ultrasonic level gage 17 detects main hydroecium 18 in real time, when water level runs higher than overflow grating
During peak level 14, according to the preventative overflow grating automatically cleaning cycle set, automatic control unit 1 controls very
Empty pump 2, electromagnetic valve 3 and trigger start, and increase vacuum pump 2, electromagnetic valve 3 and the power of extraction fan, enter
And driving rotator 4 and extraction fan normally opened, rotator 4 drives vacuum aspirator 6 to rotate by setting nominal frequencies
Device 4 drives suction opeing to press setting nominal frequencies 180 degree of swings of work, and the maintenance strengthening grid 5 is cleaned.
E. the water level during ultrasonic level gage 17 detects main hydroecium 18 in real time, when water level runs less than overflow grating
During peak level 14, according to the automatically cleaning cycle of overflow grating routinely set, automatic control unit 1 controls very
Empty pump 2, electromagnetic valve 3 and trigger work, and then drive rotator 4 and extraction fan to start, rotator 4 drives
Vacuum aspirator 6 is made rotator 4 by setting nominal frequencies and is driven suction opeing to make 180 degree of pendulum by setting nominal frequencies
Dynamic, grid 5 is maintained cleaning routinely.
F. rainfall stops, and ultrasonic level gage 17 detects the water level in main hydroecium 18 in real time, when water level is less than overflowing
When stream grid runs lowest water level 15, automatic control unit 1 controls vacuum pump 2, electromagnetic valve 3 and trigger and stops
Only work.
Claims (10)
1. an early-stage rainwater overflow grating for band vacuum draw slag removing function, including:
Overflow partition wall, is located in sump and sump hydroecium is divided into main hydroecium and overflow hydroecium；
Grid, is located at overflow partition wall top, for intercepting the particulate form pollutant in rainwater；
It is characterized in that, also include:
Vacuum suction apparatus, is located at and catchments on the borehole wall, for aspirating the residue removed on grid.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 1, its
Being characterised by, described main hydroecium is provided with interflow water inlet pipe and the outlet pipe that dams；
Described vacuum suction apparatus includes:
Cavity；
Suction opeing, is provided with multiple altogether, is located on cavity and in the linear alignment, passes through for residue and enter cavity；
Evacuated tube, is connected with cavity and the outlet pipe that dams respectively, for arranging the residue in cavity to the outlet pipe that dams.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 2, its
Being characterised by, described grid is semicircle long plate shape grid, and level is located at overflow partition wall top and axis and is overflow
Stream partition wall is parallel, and described vacuum suction apparatus also includes for fixed cavity and controls the rotator that suction opeing swings；
Described rotator controls suction opeing and swings, to absorb the residue on semicircle long plate shape grid diverse location.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 3, its
It is characterised by, axis when described suction opeing swings and the dead in line of semicircle long plate shape grid.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 3, its
Being characterised by, the semi-cylindrical hill of described grid is arranged on overflow partition wall on the side.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 3, its
Being characterised by, described vacuum suction apparatus also includes:
Extraction fan, is located in evacuated tube, is used for driving residue to enter cavity and row to the outlet pipe that dams；
Control assembly, be connected with extraction fan and rotator respectively, be used for controlling extraction fan and rotator functions.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 6, its
Being characterised by, described control assembly includes automatic control unit, trigger and interconnective vacuum pump and electromagnetism
Valve, described automatic control unit is connected with trigger, vacuum pump and electromagnetic valve respectively, described electromagnetic valve and rotator
Connecting, described trigger is connected with extraction fan.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 2, its
Being characterised by, described cavity is provided with multiple venthole, and described evacuated tube includes emptying main and multiple emptying arm,
One end of described emptying arm connects one to one with venthole respectively, and the other end all connects with the input emptying main
Connecing, the outfan of described emptying main is connected with the outlet pipe that dams.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 8, its
Being characterised by, the number of described venthole is consistent with the number of suction opeing, and described venthole is that the linear alignment is located at chamber
On body, and with the position one_to_one corresponding of suction opeing.
The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 1, its
Being characterised by, described overflow hydroecium is provided with overflow outlet pipe, and this overflow outlet pipe is connected with city receiving water body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510199114.8A CN104790517B (en) | 2015-04-23 | 2015-04-23 | A kind of early-stage rainwater overflow grating of band vacuum draw slag removing function |
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| CN201510199114.8A CN104790517B (en) | 2015-04-23 | 2015-04-23 | A kind of early-stage rainwater overflow grating of band vacuum draw slag removing function |
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| CN104790517B true CN104790517B (en) | 2016-08-24 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239664B (en) * | 2015-10-26 | 2017-04-26 | 上海市城市建设设计研究总院（集团）有限公司 | Full-underground sewage grating well |
| CN105804224A (en) * | 2016-03-07 | 2016-07-27 | 济创环保工程（苏州）有限公司 | Electric-control flow-limiting type intelligent intercepting well with overflow grating |
| CN105672465A (en) * | 2016-03-07 | 2016-06-15 | 济创环保工程（苏州）有限公司 | Unpowered current-limiting intelligent intercepting well with overflow grating |
| CN110759399A (en) * | 2019-11-27 | 2020-02-07 | 汩鸿（上海）环保工程设备有限公司 | Horizontal flat fine grid with hydraulic drive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09209434A (en) * | 1996-02-02 | 1997-08-12 | Toshihiro Nakano | Dust rejecting device of overflow rain water |
| CN202416546U (en) * | 2011-07-28 | 2012-09-05 | 杭州聚川环保科技有限公司 | Anti-blockage sewage collection box for gravity flow and vacuum combined type drainage system |
| CN202831198U (en) * | 2012-09-24 | 2013-03-27 | 福州市规划设计研究院 | Sewage intercepting well capable of preventing river water from flowing backward |
| CN202860250U (en) * | 2012-09-11 | 2013-04-10 | 北京科林之星环保技术有限公司 | Rotating grid decontamination device |
| CN203899269U (en) * | 2014-06-18 | 2014-10-29 | 重庆润国科技有限公司 | Novel separating-filtering machine with residue suction function |
| CN204645239U (en) * | 2015-04-23 | 2015-09-16 | 洼石环境工程（上海）有限公司 | A kind of early-stage rainwater overflow grating with vacuum draw slag removing function |
-
2015
- 2015-04-23 CN CN201510199114.8A patent/CN104790517B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09209434A (en) * | 1996-02-02 | 1997-08-12 | Toshihiro Nakano | Dust rejecting device of overflow rain water |
| CN202416546U (en) * | 2011-07-28 | 2012-09-05 | 杭州聚川环保科技有限公司 | Anti-blockage sewage collection box for gravity flow and vacuum combined type drainage system |
| CN202860250U (en) * | 2012-09-11 | 2013-04-10 | 北京科林之星环保技术有限公司 | Rotating grid decontamination device |
| CN202831198U (en) * | 2012-09-24 | 2013-03-27 | 福州市规划设计研究院 | Sewage intercepting well capable of preventing river water from flowing backward |
| CN203899269U (en) * | 2014-06-18 | 2014-10-29 | 重庆润国科技有限公司 | Novel separating-filtering machine with residue suction function |
| CN204645239U (en) * | 2015-04-23 | 2015-09-16 | 洼石环境工程（上海）有限公司 | A kind of early-stage rainwater overflow grating with vacuum draw slag removing function |
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| CN104790517A (en) | 2015-07-22 |
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