CN206129562U - Diesel exhaust aftertreatment SCR system adds blue pump diaphragm seal structure - Google Patents
Diesel exhaust aftertreatment SCR system adds blue pump diaphragm seal structure Download PDFInfo
- Publication number
- CN206129562U CN206129562U CN201621093422.9U CN201621093422U CN206129562U CN 206129562 U CN206129562 U CN 206129562U CN 201621093422 U CN201621093422 U CN 201621093422U CN 206129562 U CN206129562 U CN 206129562U
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- pump
- pump head
- scr system
- connecting seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 238000012805 post-processing Methods 0.000 claims description 18
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract 1
- 239000002283 diesel fuel Substances 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 19
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 239000004202 carbamide Substances 0.000 description 4
- 235000013877 carbamide Nutrition 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model relates to a diesel exhaust aftertreatment SCR system adds blue pump diaphragm seal structure. Its characterized in that the diaphragm is by four fluorine material integrated into one piece, and the diaphragm sets up a plurality of unsmooth wave structure, the border wave concave surface department of pump head and diaphragm sets up O type circle groove, sets up the leading O type circle of diaphragm in O type circle groove, and the diaphragm setting is between the leading O type of diaphragm circle and pump head connecting seat. The utility model discloses overturned the SCR system and added blue pump diaphragm and traditional sealing method, replaced original compound diaphragm with pure tetrafluoro diaphragm, adopted wavy structure, made how much increases doubly of life of diaphragm, reached more than 15 years, the same life -span with the heavy -duty diesel oil car almost, become the vulnerable part of diaphragm into conventional, the change need not to guarantee to keep in good repair, the solution of also putting things right once and for all simultaneously SCR add blue pump fluid end and reveal the problem, very big use and the maintenance cost that has reduced the user.
Description
Technical field
This utility model belongs to dosing pump field, and in particular to a kind of exhaust gas from diesel vehicle post processing SCR system add blue pump every
Diaphragm seal structure.
Background technology
With concern of the people to environmental problem, Abgasgesetz is increasingly strict, the research to emission of diesel engine control technology
It is significant.In Europe, " optimization burning+SCR（Selective Catalytic Reduction, letter
Claim SCR）" emission control technique with its fuel economy it is good, sulfur poisoning resistance is strong the advantages of, it has also become diesel vehicle meets Europe
The mainstream technology route of IV Euro V emissions.In China, with the propulsion of IV states of state V Abgasgesetzs, SCR technologies also into
For a big focus of domestic engine emission technical research.Its basic functional principle is exactly by optimizing Diesel engine cylinder internal combustion
Burning process, makes the carbon monoxide in burning waste gas（CO）, Hydrocarbon（HC）And granule（PM）Effectively controlled Deng emission
The requirement of regulation is made and reached, the higher nitrogen oxides of content in tail gas are finally discharged to electromotor（NOX）Recycle special
Vehicle-mounted after-treatment system is processed, to meet laws and regulations requirement.In last handling process, dosing unit can be according to electromotor
The urea amount matched with engine operation condition is sprayed into into exhaustor, carbamide is decomposited the instruction accurate that ECU is given
Ammonia and nitrogen oxides ultimately produce harmless nitrogen through catalytic reduction reaction in catalyst converter（N2）And water（H2O）.According to survey
Fixed, SCR exhaust gas aftertreatment systems generally reach more than 60% to the conversion ratio of nitrogen oxides.Exhaust gas from diesel vehicle after-treatment system
It is main that the composition such as blue pump, catalyst converter, urea box, nozzle, sensor, compressed air cylinder, air filter is added by SCR.SCR adds blue pump
The core cell of exhaust gas from diesel vehicle after-treatment system, is also a high precision components.And SCR adds blue pump diaphragm piece and adds indigo plant for SCR
One of main parts size of pump, its life-span directly limits the life-span of a whole set of exhaust gas from diesel vehicle after-treatment system.
SCR system adds blue pump and replaces plunger using diaphragm, realizes moving back and forth under drive mechanism effect, completes to inhale
Enter, discharge process.SCR system adds blue pump due to the buffer action of barrier film, measured fluid is truly realized in structure and is driven
Isolation between motivation structure.In the market diaphragm is formed by the crimping of tetrafluoro layer, canvas filler rubber layer and glue, while pressing from both sides cloth rubber
Glue-line wraps up an iron core piece.Such as Bosch, according to the well-known producer such as meter Tai Ke all adopt such diaphragm.Above-mentioned diaphragm not only answer by technique
It is miscellaneous, while the life-span is typically at 5000 hours or so.Because it is compound, blue pump is added in the severe ring of urea solution in SCR
In the case of the continuous throughout the twenty-four hour24 of border altofrequency 24, it is easy to fatigue rupture, degumming is the modal phenomenon of such diaphragm, then
It is rupture.SCR system adds blue pump and all compresses sealing means using by pump head and pump head connecting seat edge, and pump head is become into one
Airtight cavity, continuously back and forth makes the deformation of diaphragm flexing agitate back and forth by plunger, opens and closes in conjunction with check valve is imported and exported
To realize inhaling the cyclic process of night and discharge opeing.Therefore diaphragm is that SCR system adds one very fatal weak link of blue pump, every
A period of time must be changed, and exhaust gas from diesel vehicle after-treatment system whether can work well directly affect the use of diesel vehicle,
The greatly loss such as this will cause a traffic accident and diesel vehicle is recalled, while also affecting exhaust gas from diesel vehicle discharge France of China V, VI regulation
Whether can smoothly implement.In sum：In the urgent need to a extra long life diaphragm on market.
Utility model content
For problems of the prior art, the purpose of this utility model is to provide a kind of exhaust gas from diesel vehicle post processing
SCR system adds the technical scheme of blue pump diaphragm sheet sealing structure.
A kind of described exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, including pump head, pump head connect
Joint chair and diaphragm, diaphragm is arranged between pump head and pump head connecting seat, and pump head is bolted with pump head connecting seat, its
Be characterised by that the diaphragm is integrally formed by PTFE, diaphragm arranges multiple concavo-convex wave structures, the pump head with every
The most edge wave concave surface of diaphragm arranges an O-ring groove, and the preposition O-ring of diaphragm is arranged in O-ring groove, and diaphragm is arranged on
Between the preposition O-ring of diaphragm and pump head connecting seat.
A kind of described exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described
Pump head is equipped with 4 screw holes with pump head connecting seat, is spirally connected with support through pump head and pump head connecting seat by 4 fixed screws
Make the deformation of diaphragm preposition O-ring compress diaphragm and form wave soft sealing structure, diaphragm by pump chamber be separated into one it is closed
Cavity volume.
A kind of described exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that the O
The diameter of type ring recess is identical with the diameter of the wave concave surface of corresponding diaphragm outermost edges.
A kind of described exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described
A diameter of 25-45 millimeters of diaphragm.
A kind of described exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described
The diameter of the preposition O-ring of diaphragm matches with the diameter of O-ring groove.
A kind of described exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that the O
Type ring recess can also be arranged on pump housing connecting seat.
A kind of described exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that the O
Type ring recess can also be arranged on pump head and pump housing connecting seat simultaneously.
This utility model provides a kind of high-quality, high performance-price ratio, extra long life and adds blue pump wave diaphragm, and it is
It is made up of the compacting of pure solid tetrafluoro sheet material, sintering, turning, can be compatible with almost all of chemicals；There is provided a kind of newest simultaneously
The maximally effective sealing structure of type, wave soft seal, it is supported the use with this diaphragm.
In this utility model, SCR system adds blue pump continuously back and forth makes diaphragm produce axially-movable by plunger, axially fortune
It is dynamic diaphragm flexing is agitated back and forth, open and close to realize inhaling being circulated throughout for night and discharge opeing in conjunction with check valve is imported and exported
Journey；Diaphragm inhale liquid condition when, in free state；When liquid status are gone out, diaphragm reaches top, due to individual diaphragm
The presence of many waves for arranging, the stress of diaphragm is decomposed by multiple waves, so as to avoid the concentration of stress point, from
And make the increase of the life-span geometry times of diaphragm.Simultaneously by traditional diaphragm, rigidly compression sealing makes flexible membrane into this utility model
The soft sealing of the preposition O-ring wave of piece, is greatly reduced the probability of pump head leakage, and the pump head that solves once and for all is revealed
Problem.
Description of the drawings
Fig. 1 is this utility model diaphragm sectional structure chart；
Fig. 2 is a kind of sectional structure chart of embodiment of this utility model；
In figure：1- diaphragms, 2- pump heads, 3- pump head connecting seats, the preposition O-ring of 4- diaphragms.
Specific embodiment
With reference to Figure of description, the utility model is described in further detail：
Traditional electromagnetic dosing pump diaphragm is formed by mould by rubber layer, tetrafluoro layer, iron core with glueds joint.Due to it
It is to use different materials（Rubber layer and tetrafluoro layer）Splicing is formed, and is taken off in alkaline environment, rubber layer and the easy aging oxidation of tetrafluoro layer
Glue, iron core and rubber layer are also easy to degumming.Simultaneously traditional SCR system adds blue pump diaphragm piece all using by pump head and pump head company
Joint chair edge compress sealing means, pump head is become into an airtight cavity, by plunger continuously back and forth make diaphragm flexing deformation come
Return and agitate, open and close to realize inhaling the cyclic process of night and discharge opeing in conjunction with check valve is imported and exported.Exactly such sealing
Mode easily causes the point fatigue rupture of diaphragm flexing.Therefore traditional diaphragm is that Electromagnetic diaphragm metering pump one is very fatal thin
Weak link, must change at set intervals, and diaphragm cost is higher.
Fig. 1 is this utility model diaphragm sectional structure chart.Can be seen that diaphragm of the present utility model is by upper figure
A kind of material（Tetrafluoro）It is integrally formed, i.e., is made up of the compacting of pure solid PTFE, sintering, turning, can be with almost all ofization
Product are compatible.Because it does not just have degumming problem for commaterial, again PTFE has splendid chemical anticorrosive
Performance, there's almost no the problem of aging oxidation.
Fig. 2 is a kind of sectional structure chart of embodiment of this utility model.A kind of exhaust gas from diesel vehicle post processing SCR system adds indigo plant
Pump diaphragm sheet sealing structure, including pump head 2, pump head connecting seat 3 and diaphragm 1, diaphragm 1 is arranged on pump head 2 and is connected with pump head
Between seat 3, pump head is bolted with pump head connecting seat.Diaphragm is integrally formed by PTFE, and diaphragm is according to barrier film
Piece diameter and driving stroke length arrange multiple concavo-convex wave structures, and pump head sets with the most edge wave concave surface of diaphragm
Put an O-ring groove（Do not mark in figure）, the preposition O-ring 4 of diaphragm, the diameter and O of the preposition O-ring 4 of diaphragm are set in O-ring groove
The diameter of type ring recess matches, and diaphragm is arranged between the preposition O-ring of diaphragm and pump head connecting seat.Pump head and pump head connecting seat
4 screw holes are equipped with, being spirally connected with support through pump head and pump head connecting seat by 4 fixed screws makes the preposition O-ring of diaphragm
Deformation compresses diaphragm and forms wave soft seal, and pump chamber is separated into a closed containing cavity by diaphragm.
O-ring groove not only can be arranged on pump head, and O-ring groove can also be arranged on pump housing connecting seat or O-ring groove is same
When be arranged on pump head and pump housing connecting seat, the diameter phase of the wave concave surface of the diameter of O-ring groove and corresponding diaphragm
Together.Blue pump is added according to SCR and uses traffic requirement, the general 25-45 millimeters of diaphragm diameter in actual condition.Such as diaphragm diameter
For 30 millimeters, then advise that the preposition O-ring external diameter of diaphragm is 28 millimeters.Four screws arranged by pump head are compressed film partition,
So as to form the preposition O-ring wave soft seal mode of uniqueness.
Diaphragm of the present utility model inhale liquid condition when, in free state；When liquid status are gone out, diaphragm reaches
Top, due to many waves that diaphragm is arranged（Multiple concavo-convex wave structures）Presence, by the stress of diaphragm by multiple
Wave decomposes, so as to avoid the concentration of stress point, so that the increase of the life-span geometry of diaphragm times.
This utility model has been overturned SCR system and has added blue pump diaphragm piece and traditional sealing means, is replaced with pure tetrafluoro diaphragm
Generation original compound diaphragm, using wave structure, makes the increase of the service life geometry times of diaphragm, reaches more than 15 years,
Almost with heavy-duty diesel vehicle same life, the consumable accessory of diaphragm is become into conventional part, without the need for carrying out guarantee replacing；Simultaneously also one
The SCR that solves of Lao Yongyi adds blue pump hydraulic end leakage problem, is greatly reduced use and the maintenance cost of user, while will
Major contribution is made in smooth enforcement for exhaust gas from diesel vehicle discharge France of China V, VI regulation.
Claims (7)
1. a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, including pump head, pump head connecting seat and every
Diaphragm, diaphragm is arranged between pump head and pump head connecting seat, and pump head is bolted with pump head connecting seat, it is characterised in that
The diaphragm is integrally formed by PTFE, and diaphragm arranges multiple concavo-convex wave structures, and the pump head is with diaphragm most
Edge wave concave surface arranges an O-ring groove, and the preposition O-ring of diaphragm is arranged in O-ring groove, and it is preposition that diaphragm is arranged on diaphragm
Between O-ring and pump head connecting seat.
2. a kind of exhaust gas from diesel vehicle post processing SCR system according to claim 1 adds blue pump diaphragm sheet sealing structure, and it is special
It is that the pump head is equipped with 4 screw holes with pump head connecting seat to levy, by 4 fixed screws through pump head and pump head connecting seat
Being spirally connected with support makes the preposition O-ring deformation of diaphragm compress diaphragm formation wave soft sealing structure, and diaphragm separates pump chamber
Into a closed containing cavity.
3. a kind of exhaust gas from diesel vehicle post processing SCR system according to claim 1 adds blue pump diaphragm sheet sealing structure, and it is special
Levy be the O-ring groove diameter it is identical with the diameter of the wave concave surface of corresponding diaphragm outermost edges.
4. a kind of exhaust gas from diesel vehicle post processing SCR system according to claim 1 adds blue pump diaphragm sheet sealing structure, and it is special
Levy be the diaphragm a diameter of 25-45 millimeters.
5. a kind of exhaust gas from diesel vehicle post processing SCR system according to claim 1 adds blue pump diaphragm sheet sealing structure, and it is special
Levy is that the diameter of the preposition O-ring of the diaphragm matches with the diameter of O-ring groove.
6. a kind of exhaust gas from diesel vehicle post processing SCR system according to claim 1 adds blue pump diaphragm sheet sealing structure, and it is special
Levy is that the O-ring groove can also be arranged on pump housing connecting seat.
7. a kind of exhaust gas from diesel vehicle post processing SCR system according to claim 1 adds blue pump diaphragm sheet sealing structure, and it is special
Levy is that the O-ring groove can also be while be arranged on pump head and pump housing connecting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621093422.9U CN206129562U (en) | 2016-09-30 | 2016-09-30 | Diesel exhaust aftertreatment SCR system adds blue pump diaphragm seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621093422.9U CN206129562U (en) | 2016-09-30 | 2016-09-30 | Diesel exhaust aftertreatment SCR system adds blue pump diaphragm seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206129562U true CN206129562U (en) | 2017-04-26 |
Family
ID=58570931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621093422.9U Expired - Fee Related CN206129562U (en) | 2016-09-30 | 2016-09-30 | Diesel exhaust aftertreatment SCR system adds blue pump diaphragm seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206129562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224213A (en) * | 2016-09-30 | 2016-12-14 | 罗凯缤 | A kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet and seals structure |
-
2016
- 2016-09-30 CN CN201621093422.9U patent/CN206129562U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224213A (en) * | 2016-09-30 | 2016-12-14 | 罗凯缤 | A kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet and seals structure |
| CN106224213B (en) * | 2016-09-30 | 2018-11-13 | 罗凯缤 | A kind of exhaust gas from diesel vehicle post-processing SCR system adds blue pump diaphragm piece and sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200107 Address after: 317100 Jin Yuan three road, hainun street, three Town, Taizhou, Zhejiang Patentee after: ZHEJIANG AILIPU TECHNOLOGY CO., LTD. Address before: Hangzhou City, Zhejiang Province, 310053 Binjiang District Puyan street sun Residence Internazionale 1 Building 5 unit 1802 room Patentee before: Luo Kaibin |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20200930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |