CN106111334B - Cavity electrodes electromagnetism ash-cleaning type electric precipitation - Google Patents
Cavity electrodes electromagnetism ash-cleaning type electric precipitation Download PDFInfo
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- CN106111334B CN106111334B CN201610476562.2A CN201610476562A CN106111334B CN 106111334 B CN106111334 B CN 106111334B CN 201610476562 A CN201610476562 A CN 201610476562A CN 106111334 B CN106111334 B CN 106111334B
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- Prior art keywords
- dust
- cavity
- electrode
- deashing
- cavity electrodes
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- Expired - Fee Related
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- 238000004140 cleaning Methods 0.000 title claims abstract description 10
- 238000001556 precipitation Methods 0.000 title claims abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 66
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000005684 electric field Effects 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000012212 insulator Substances 0.000 claims description 7
- 230000008093 supporting effect Effects 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract description 2
- 238000010009 beating Methods 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000003500 flue dust Substances 0.000 description 6
- 238000005367 electrostatic precipitation Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003818 cinder Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a kind of cavity electrodes electromagnetism ash-cleaning type electric precipitation, it can be widely applied to coal-burning power plant, smelting iron and steel, building materials, the environmental dust removal of construction site and technique and gather dust field, mainly by dust collector box body（1）, minus plate（2）, cavity electrodes（3）, deashing electrode（4）, AC boosting become（16）, rectifier boost become（17）Composition；The present invention is not limited by Dust Characteristics；The turbulence intensity in exhaust gases passes is reduced, dust collection effect is improved；Dust size is smaller, and its dust collecting performance is stronger；Dust into dust chamber also has good shielding action, can efficiently reduce loss of backflowing；Secondly cavity electrodes inside laying dust is disturbed and the effect of beating of high frequency battle array in deashing electrode AC field, dust removing effects continuous and effective can be kept.The dust collection electric field of this configuration flutters dirt efficiency high than conventional electric field, and airborne dust loses small, wide adaptation range, with higher cost performance and wide application prospect.
Description
Technical field
The invention belongs to environmental pollution improvement's category, it is related to a kind of electric precipitation, is related specifically to a kind of cavity electrodes electromagnetism
Ash-cleaning type electric precipitation.
Background technology
With requirement more and more higher of the country in terms of environmental protection, the relevant criterion formulated is also increasingly stricter, forces ring
Border pollution abatement equipment manufacturing enterprise accelerates strength of technical renovation, accelerates the updating and upgrading of a product, environmental pollution improvement of China is set
Standby development serves positive facilitation.Current deduster can be divided into mechanical dust collector, wet scrubber, filtering type and remove
Dirt device, electric cleaner etc..Electric cleaner is to realize a kind of dust arrester that powder dust particle is separated with air-flow using electrostatic force, with it
The deduster of its type is compared, and the pressure loss is small, efficiency of dust collection is high, processing gas amount big, can be used for high temperature, the field of high pressure
Close, facilitate realization to automatically control.But it is more and more stricter with the environmental protection standard of soot emissions, the development of electric cleaner both by
The bottleneck limitation of technology itself is arrived, the development of electric cleaner was in relatively slow in recent years, current electrostatic precipitation technology master
If contrasting resistance range 104~1010Ω cm dust works, because the fast-developing dust species of industrialization constantly increases
Plus, the dust accounting of high specific resistance and low resistivity is relative to be improved so that current electrostatic precipitation technology nothing under new Environmental Protection Situation
Method reaches requirement.The need for adapting to social development, a kind of new electric cleaner is researched and developed imperative.
The content of the invention
To solve the above problems the invention discloses a kind of cavity electrodes electromagnetism ash-cleaning type electric precipitation, there is pin to prior art
To being reformed for property, so as to meet the environmental requirement increasingly improved.
To achieve the above object, solution of the invention is：
Cavity electrodes electromagnetism ash-cleaning type electric precipitation, mainly by dust collector box body（1）, minus plate（2）, cavity electrodes（3）, it is clear
Grey electrode（4）, AC boosting become（16）, rectifier boost become（17）Composition；Deashing electrode（4）It is longitudinally mounted to cavity electrodes（3）
Inside, and be cross-linked in AC boosting change（16）High-pressure side A B C phases, AC boosting become（16）Neutral point connects deduster case
Body（1）And cavity electrodes（3）；Minus plate（2）And cavity electrodes（3）It is alternately distributed and hangs on dust collector box body（1）Inside, and put down
Row is in airflow direction；Minus plate（2）Using DC Insulator（8）Hang on dust collector box body（1）Structural beams on, electrical connection
Become in rectifier boost（17）High-pressure side negative pole, rectifier boost becomes（17）Positive pole connects dust collector box body（1）And cavity electrodes（3）；
The deashing electrode（4）For cylindrical structural, by exchanging insulator（11）Hang on dust collector box body（1）Knot
On structure beam, every deashing electrode（4）Uniform fixed no less than 3 cross insulating supportings（15）, insulating supporting（15）It is supported on
Cavity electrodes（3）Do not fix measure on inwall.
The dust collector box body（1）Two ends air inlet is set respectively（6）And air outlet（7）, in air inlet（6）One end
Internal electrode front end is provided with airflow-distribution board（5）, dust collector box body（1）Bottom is provided with flue-dust retainer（13）, in dust collector box body（1）
And flue-dust retainer（13）Between be additionally provided with ash bucket deflector（12）, flue-dust retainer（13）Lower section connected double-layer unloading valve（14）；
The minus plate（2）Vertical uniformly weld some row's metal prickles using expanded metal lath is two-sided and be made；
The cavity electrodes（3）Arcuation is molded into using expanded metal lath corrugated, then surrounds rectangular box, casing is not set
Bottom plate, and side is provided with triangle Choked flow cover windward（10）；
The minus plate（2）Metal prickle boss just to cavity electrodes（3）The recessed position arrangement of plate face, and protect
Hold uniform arcing distance.
Coal-burning power plant, smelting iron and steel, building materials, the environmental dust removal of construction site and technique is the composite can be widely applied to gather dust
Field, the present invention has that running resistance is small, cost is low, and processing technology is easy, and the construction period is short, and maintenance is small, especially dedusting
Efficiency high, is not limited by Dust Characteristics.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is horizontal profile schematic diagram of the invention；
Fig. 2 for the present invention A-A to sectional view.
Legend explanation：
1st, dust collector box body；2nd, minus plate；3rd, cavity electrodes；4th, deashing electrode；5th, airflow-distribution board；6th, air inlet；7、
Air outlet；8th, DC Insulator；9th, cathode frame；10th, Choked flow cover；11st, insulator is exchanged；12nd, ash bucket deflector；13rd, ash is collected
Bucket；14th, Double-deck cinder discharge valve；15th, insulating supporting；16th, AC boosting becomes；17th, rectifier boost becomes.
Embodiment
With reference to the accompanying drawings, cavity electrodes electromagnetism ash-cleaning type electric precipitation, mainly by dust collector box body（1）, minus plate（2）, cavity
Electrode（3）, deashing electrode（4）, AC boosting become（16）, rectifier boost become（17）Composition；Deashing electrode（4）It is longitudinally mounted to sky
Cavity electrode（3）Inside, and be cross-linked in AC boosting change（16）High-pressure side A B C phases, AC boosting become（16）Neutral point connects
Connect dust collector box body（1）And cavity electrodes（3）, AC boosting change（16）Low-pressure side connection square wave frequency converter；Minus plate（2）
And cavity electrodes（3）It is alternately distributed and hangs on dust collector box body（1）Inside, and parallel to airflow direction；Minus plate（2）Using straight
Flow insulator（8）Hang on dust collector box body（1）Structural beams on, be electrically connected in rectifier boost change（17）High-pressure side negative pole,
Rectifier boost becomes（17）Positive pole connects dust collector box body（1）And cavity electrodes（3）；
The deashing electrode（4）For cylindrical structural, by exchanging insulator（11）Hang on dust collector box body（1）Knot
On structure beam, every deashing electrode（4）Uniform fixed no less than 3 cross insulating supportings（15）, insulating supporting（15）It is supported on
Cavity electrodes（3）Do not fix measure on inwall.
The dust collector box body（1）Two ends air inlet is set respectively（6）And air outlet（7）, in air inlet（6）One end
Internal electrode front end is provided with airflow-distribution board（5）, dust collector box body（1）Bottom is provided with flue-dust retainer（13）, in dust collector box body（1）
And flue-dust retainer（13）Between be additionally provided with ash bucket deflector（12）, flue-dust retainer（13）Lower section connected double-layer unloading valve（14）；
The minus plate（2）Vertical uniformly weld some row's metal prickles using expanded metal lath is two-sided and be made；
The cavity electrodes（3）Arcuation is molded into using expanded metal lath corrugated, then surrounds rectangular box, casing is not set
Bottom plate, and side is provided with triangle Choked flow cover windward（10）；
The minus plate（2）Metal prickle boss just to cavity electrodes（3）The recessed position arrangement of plate face, and protect
Hold uniform arcing distance.
Refering to accompanying drawing 1, minus plate of the invention and the boss interlaced arrangement of deashing electrode, wherein at intervals of cavity electricity
Pole wall, the corrugated boss for just getting around minus plate and deashing electrode of arcuation of cavity electrodes wall.Cavity electrodes are windward
Side sets Choked flow cover, cavity electrodes and minus plate interlaced arrangement uniform in the plane, between region form exhaust gases passes, when for
When the negative pole of minus plate access high voltage power supply, cavity electrodes connect high-voltage power cathode, flue gas is through air inlet in airflow-distribution board
In the presence of, dust collection electric field is evenly distributed to, cigarette is distributed to by exhaust gases passes by triangle Choked flow cover, into exhaust gases passes
Dust is charged in dust collection electric field, and passes through cavity electrodes mesh in the presence of corona wind to cavity in the presence of corona wind
Inside drive into；Deashing electrode inside cavity electrodes plays dither effect in the presence of AC field to cavity electrodes, with
And alternating electric field is periodically powered to the perturbation action of deposition dust to deashing electrode, keeps cavity electrodes surface cleaning mesh to lead to
Thoroughly, it is ensured that dust removing effects continuous and effective.
It is of the invention that there is advantages below compared with existing electrostatic precipitation technology：Dust is confined to sky in the presence of corona wind
In cavity electrode, so as to reduce the turbulence intensity in exhaust gases passes, dust collection effect is improved；The dust under dizzy wind action simultaneously
Particle diameter is smaller, and its dust collecting performance is stronger；The present invention is not restricted by dust specific resistance size；Dust into cavity electrodes also has
Good hydrodynamics shielding action, loss of backflowing can be efficiently reduced；Secondly in deashing electrode AC field to cavity
Electrode interior laying dust is disturbed and the effect of beating of high frequency battle array, can keep dust removing effects continuous and effective.The dust collection electric field of this configuration
Dirt efficiency high is flutterred than conventional electric field, airborne dust loses small, wide adaptation range, lightweight construction, with higher cost performance and wide
Application prospect.
Claims (1)
1. cavity electrodes electromagnetism ash-cleaning type electric precipitation, by dust collector box body（1）, minus plate（2）, cavity electrodes（3）, deashing electrode
（4）, AC boosting become（16）, rectifier boost become（17）Composition；It is characterized in that：Deashing electrode（4）It is longitudinally mounted to cavity electricity
Pole（3）Inside, and be cross-linked in AC boosting change（16）High-pressure side A B C phases, AC boosting become（16）Neutral point connection is removed
Dirt device casing（1）And cavity electrodes（3）, AC boosting change（16）Low-pressure side connection square wave frequency converter；Minus plate（2）And sky
Cavity electrode（3）It is alternately distributed and hangs on dust collector box body（1）Inside, and parallel to airflow direction；Minus plate（2）It is exhausted using direct current
Edge（8）Hang on dust collector box body（1）Structural beams on, be electrically connected in rectifier boost change（17）High-pressure side negative pole, rectification
Boosting becomes（17）Positive pole connects dust collector box body（1）And cavity electrodes（3）；
The deashing electrode（4）For cylindrical structural, by exchanging insulator（11）Hang on dust collector box body（1）Structural beams
On, every deashing electrode（4）Uniform fixed no less than 3 cross insulating supportings（15）, insulating supporting（15）It is supported on cavity
Electrode（3）Do not fix measure on inwall；
The boss interlaced arrangement of minus plate and deashing electrode, wherein at intervals of cavity electrodes wall, the arcuation of cavity electrodes wall
The corrugated boss for just getting around minus plate and deashing electrode, cavity electrodes and minus plate uniformly interlock cloth in the plane
Put, between region formed exhaust gases passes, when for minus plate access high voltage power supply negative pole, cavity electrodes connection high voltage power supply just
During pole, flue gas in the presence of airflow-distribution board, is evenly distributed to dust collection electric field through air inlet, by triangle Choked flow cover by cigarette
Be distributed to exhaust gases passes, into exhaust gases passes dust in dust collection electric field it is charged, and in the presence of corona wind pass through cavity
Electrode mesh driven in the presence of corona wind into cavity into；Deashing electrode inside cavity electrodes is in the presence of AC field
Cavity electrodes are played with dither effect, and alternating electric field is to the perturbation action of deposition dust, it is periodically logical to deashing electrode
Electricity, keeps cavity electrodes surface cleaning mesh penetrating, it is ensured that dust removing effects continuous and effective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476562.2A CN106111334B (en) | 2016-06-27 | 2016-06-27 | Cavity electrodes electromagnetism ash-cleaning type electric precipitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476562.2A CN106111334B (en) | 2016-06-27 | 2016-06-27 | Cavity electrodes electromagnetism ash-cleaning type electric precipitation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106111334A CN106111334A (en) | 2016-11-16 |
| CN106111334B true CN106111334B (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610476562.2A Expired - Fee Related CN106111334B (en) | 2016-06-27 | 2016-06-27 | Cavity electrodes electromagnetism ash-cleaning type electric precipitation |
Country Status (1)
| Country | Link |
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| CN (1) | CN106111334B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106733192B (en) * | 2017-02-03 | 2018-07-27 | 许玉蕊 | A kind of electrostatic air cleaning device |
| CN107282301A (en) * | 2017-08-10 | 2017-10-24 | 许玉蕊 | Multiple-effect air-borne dust absorber |
| CN107262279A (en) * | 2017-08-10 | 2017-10-20 | 莱芜万通电器有限公司 | A kind of High-performance static electric dust collector |
| CN108067354A (en) * | 2017-08-10 | 2018-05-25 | 莱芜万通电器有限公司 | A kind of composite type electrostatic precipitator |
| CN107398351A (en) * | 2017-08-10 | 2017-11-28 | 许玉蕊 | High-performance air purifier |
| CN107497603A (en) * | 2017-08-10 | 2017-12-22 | 环球国合（北京）低碳环保科技有限公司 | A kind of Combined type electric dedusting |
| CN107442278A (en) * | 2017-08-10 | 2017-12-08 | 环球国合（北京）低碳环保科技有限公司 | Expanded metals collection electrode formula electric precipitation |
| CN107309087A (en) * | 2017-08-10 | 2017-11-03 | 环球国合（北京）低碳环保科技有限公司 | A kind of electromagnetism ash-cleaning type electric precipitation |
| CN107597438A (en) * | 2017-08-30 | 2018-01-19 | 上海联达节能科技有限公司 | A kind of new electric dust collector |
| CN108772198B (en) * | 2018-06-07 | 2020-09-04 | 刘金波 | Exhaust building with air purification function |
| CN109277197A (en) * | 2018-09-21 | 2019-01-29 | 湖北邵环保科技有限公司 | A kind of high-pressure electrostatic precipitation method and apparatus |
| CN115254433A (en) * | 2022-05-12 | 2022-11-01 | 浙江菲达环保科技股份有限公司 | Dust collection type cathode ray |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945813A (en) * | 1971-04-05 | 1976-03-23 | Koichi Iinoya | Dust collector |
| CN101310822A (en) * | 2007-05-21 | 2008-11-26 | 福建闽泰环保有限公司 | Lens electric-bag complex dust collector |
| CN202061711U (en) * | 2011-04-13 | 2011-12-07 | 福建东源环保有限公司 | Electrostatic precipitator with lens electric fields |
| CN204735342U (en) * | 2015-01-09 | 2015-11-04 | 神华集团有限责任公司 | Electric dust collector |
| CN105170328A (en) * | 2015-10-29 | 2015-12-23 | 许玉蕊 | Three-electrode barrel type electric dust removal device |
| CN105149093A (en) * | 2015-10-29 | 2015-12-16 | 许玉蕊 | Three-electrode box-type electrode electric dust removing device |
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2016
- 2016-06-27 CN CN201610476562.2A patent/CN106111334B/en not_active Expired - Fee Related
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| CN106111334A (en) | 2016-11-16 |
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Effective date of registration: 20191104 Address after: Tongxiang City, Jiaxing City, Zhejiang province 314500 Tu Dian Zhen Shuguang Road No. 426 Patentee after: TONGXIANG YUESHUN WRAP KNITTING Co.,Ltd. Address before: 266404 Department of electrical engineering, Qingdao Harbor College, No. two, 316 science and education road, West Coast new area, Shandong, Qingdao Patentee before: Xu Yurui |
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Effective date of registration: 20200103 Address after: No. 1400 Qianjin Road Tongxiang city Jiaxing city 314500 Zhejiang province Tu Dian Zhen Patentee after: Zhejiang Yinhui high fiber material Co.,Ltd. Address before: Tongxiang City, Jiaxing City, Zhejiang province 314500 Tu Dian Zhen Shuguang Road No. 426 Patentee before: TONGXIANG YUESHUN WRAP KNITTING Co.,Ltd. |
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Granted publication date: 20171024 |