CN106075964B - Device, environmental protecting device for settlement of sewage clarifying treatment - Google Patents
Device, environmental protecting device for settlement of sewage clarifying treatment Download PDFInfo
- Publication number
- CN106075964B CN106075964B CN201610507573.2A CN201610507573A CN106075964B CN 106075964 B CN106075964 B CN 106075964B CN 201610507573 A CN201610507573 A CN 201610507573A CN 106075964 B CN106075964 B CN 106075964B
- Authority
- CN
- China
- Prior art keywords
- water channel
- vortex
- barrier bodies
- water
- container
- 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.)
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Links
- 230000007613 environmental effect Effects 0.000 title abstract description 4
- 239000010865 sewage Substances 0.000 title description 3
- 230000004888 barrier function Effects 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000001556 precipitation Methods 0.000 claims abstract description 11
- 239000002244 precipitate Substances 0.000 claims abstract description 3
- 239000013049 sediment Substances 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000013618 particulate matter Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 241000707825 Argyrosomus regius Species 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0003—Making of sedimentation devices, structural details thereof, e.g. prefabricated parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/003—Sedimentation tanks provided with a plurality of compartments separated by a partition wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0051—Plurality of tube like channels
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biological Treatment Of Waste Water (AREA)
- Farming Of Fish And Shellfish (AREA)
- Revetment (AREA)
- Bathtub Accessories (AREA)
Abstract
Precipitate apparatus for clarifying, it is characterised in that：Mainly by water channel device（5）, container（6）Form；Water channel device（5）It is upper that there is water inlet（50）, delivery port（51）, vortex-like water channel（52）, barrier bodies（53）；Barrier bodies（32）With vortex-like waterway wall（31）It is formed in one, water inlet（34）Diameter be less than delivery port（33）Diameter；Water channel device（5）With container（6）To be tightly connected, duct device（5）With container（6）It is combined together, can be with particulate matter in efficient precipitation water, can be from container after being separated（6）Middle collection sediment;Described barrier bodies are bent plate shape；Described barrier bodies quantity is 4.Environmental protecting device, there is foregoing fluid handling structure.Cost of the present invention is cheap, using it is flexible, service life is long, is hardly damaged, reliable and stable.
Description
Technical field
The present invention relates to sedimentation, and in particular to a kind of channel structure that can be used for precipitation.
Background technology
Existing sedimentation basin generally requires the soil of larger area, and is mostly Large Water Works design, and it is great to implement engineering
Greatly, and extremely difficult miniaturization, it is difficult to bear really for the meagre minuscule-type-enterprise of financial resources；Have if it can improve deposition efficiency
Beneficial to sedimentation basin cost is reduced, there is facilitation for environmental protection.
The content of the invention
The present invention has invented a kind of channel structure that can be used for precipitation, for improving the deposition efficiency of sedimentation basin.
The present invention has following technology contents.
Technology contents 1：A kind of channel structure that can be used for precipitation, it is characterised in that：Mainly by vortex-like water channel, at least four
Individual barrier bodies are formed；Barrier bodies are distributed in vortex-like water channel；The barrier bodies of more than half, one end and vortex-like water channel telecentricity side inwall
It is connected, the other end points to and do not contact the nearly heart side inwall of vortex-like water channel.
Technology contents 2：A kind of channel structure that can be used for precipitation as described in technology contents 1, it is characterised in that：Half with
On barrier bodies, be not connected with vortex-like water channel inwall end to vortex-like water channel inwall beeline, less than or equal to vortex-like water
The half of road width.
Technology contents illustrate and its advantage.
Technology contents illustrate 1：As described in technology contents 1,2, core concept of the invention be using water inertia force and
Pressure difference manufactures backwash area between the vortex-like each barrier bodies in water channel telecentricity side, promotes impurity to be precipitated in backwash area.
Technology contents illustrate 2：In the present invention, due to " barrier bodies of more than half, one end and vortex-like water channel telecentricity side inwall
It is connected, the other end points to and do not contact the nearly heart side inwall of vortex-like water channel "；That is between barrier bodies and the nearly heart side of vortex-like water channel
Have a gap, this design cause water can only from the nearly heart effluent mistake of vortex-like water channel, because inertia force makes hydrone tend to linear motion,
Therefore a backwash area can be produced between barrier bodies, any one section all has radian due to vortex-like water channel, and impurity is in Sui Shui
Can be because the backwash area that inertia force enters between barrier bodies away from the nearly heart side of vortex-like water channel, so as to be advantageous to during motion
Precipitation or the mixing with medicament." more than half " mentioned in the present invention this measure word, contain " half " and contain 50%.
Technology contents illustrate 3：" heart " word in " telecentricity side, nearly heart side " word mentioned in the present invention refers to vortex-like water channel
Vortex-like line center.
Technology contents illustrate 4：" sensing " mentioned in the present invention refer to from horizontal profile analyze with barrier bodies with it is vortex-like
Contact point inside water channel telecentricity side is starting point, along direction caused by the extension in barrier bodies Surface Edge boundary line.
Technology contents illustrate 5：In the present invention, barrier bodies can be single elements, can also be and vortex-like waterway wall one
The structure of shaping, can also be the device that complicated multiple structures or multiple element form；Such as：Straight panel, the plate of bending, rib
Post, the prism with curved surface, multiple prisms composition prism, with the integrally formed straight panel of vortex-like water channel, with vortex-like water channel one into
The twisted plate of type and the integrally formed prism of vortex-like water channel etc.；Barrier bodies can be regular shape or special-shaped,
As long as incomplete iris action can be reached（Water stream channel is formed in the nearly heart district of vortex-like water channel, telecentricity region forms and whirled
Flow area）As practicable scheme of the invention.No matter which kind of state the space length between barrier bodies is in the present invention, as long as it
Create backwash area in vortex-like water channel telecentricity region, be all the feasible program of the present invention.
Technology contents illustrate 6：Current either flow to center in each vortex-like water channel from vortex-like water channel outer end in the present invention,
Or outer end is flowed to from center, is all the feasible program of the present invention.
Technology contents illustrate 7：As described in technology contents 1,2, preferred plan of the invention is " all barrier bodies, one end
It is connected with vortex-like water channel telecentricity side inwall, the other end points to and do not contact the nearly heart side inwall of vortex-like water channel；All barrier bodies, no
The beeline of vortex-like water channel inwall is arrived at the end being connected with vortex-like water channel inwall, less than or equal to the half of vortex-like channel width "；
For prevention, other people steal core concept of the invention, protection model of the application to the present invention using the means of deterioration technical scheme
Enclose and be made that appropriate expansion.It it is four to barrier bodies quantity set above is in order to ensure at least one backwash area.
Technology contents illustrate 8：The vortex-like water channel of the present invention is implemented to examine earth rotation direction as one during design
Worry factor；The vortex-like water channel of the present invention, which is implemented to be placed in during design in other vortex-like or non-vortex-like water channels, to be used；Read reason
Solve after this explanation technology contents illustrate 1-8 and understand, the present invention can be used for pond or other utensils precipitate, clarify, mixing.
Beneficial effects of the present invention：Increase rate of the present invention settlement of sewage efficiency.
Brief description of the drawings
Fig. 1 is the embodiment schematic diagram of the present invention.
Fig. 2 is the embodiment schematic diagram of the present invention.
Fig. 3 is the embodiment schematic diagram of the present invention.
Fig. 4 is the fluid emulation figure of the embodiment of the present invention.
Fig. 5-8 is the schematic diagram for an application settler for having used embodiment of the present invention.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1, as shown in figure 1, it is a kind of can be used for precipitation channel structure：Mainly by vortex-like water channel 10, at least two
Individual barrier bodies 12 are formed；Barrier bodies 12 are distributed in vortex-like water channel 10；One end of all barrier bodies 12 and the vortex-like telecentricity of water channel 10
Side inwall is connected, and the other end points to and do not contact the nearly heart side inwall of vortex-like water channel 10；All barrier bodies 12 not with vortex-like water channel 10
The end that inwall is connected is less than or equal to the half of the vortex-like width of water channel 10 to the beeline of the vortex-like inwall of water channel 10.Barrier bodies 12
It is formed in one with vortex-like waterway wall 11, the diameter of water inlet 14 is less than the diameter of delivery port 13；Barrier bodies 12 are bending tabular.
Embodiment 2, as shown in Fig. 2 it is a kind of can be used for precipitation channel structure：Mainly by vortex-like water channel 20, at least two
Individual barrier bodies 22 are formed；Barrier bodies 22 are distributed in vortex-like water channel 20；One end of all barrier bodies 22 and the vortex-like telecentricity of water channel 20
Side inwall is connected, and the other end points to and do not contact the nearly heart side inwall of vortex-like water channel 20；All barrier bodies 22 not with vortex-like water channel 20
The end that inwall is connected is less than or equal to the half of the vortex-like width of water channel 20 to the beeline of the vortex-like inwall of water channel 20.Barrier bodies 22
It is formed in one with vortex-like waterway wall 21, the diameter of water inlet 24 is less than the diameter of delivery port 23；Barrier bodies 22 are curved surface Rhizoma Sparganii
Column.
Embodiment 3, as shown in figure 3, it is a kind of can be used for precipitation channel structure：Mainly by vortex-like water channel 30, at least two
Individual barrier bodies 32 are formed；Barrier bodies 32 are distributed in vortex-like water channel 30；One end of all barrier bodies 32 and the vortex-like telecentricity of water channel 30
Side inwall is connected, and the other end points to and do not contact the nearly heart side inwall of vortex-like water channel 30；All barrier bodies 32 not with vortex-like water channel 30
The end that inwall is connected is less than or equal to the half of the vortex-like width of water channel 30 to the beeline of the vortex-like inwall of water channel 30.Barrier bodies 32
It is formed in one with vortex-like waterway wall 31, the diameter of water inlet 34 is less than the diameter of delivery port 33；Barrier bodies 32 are straight panel shape.
Embodiment 4, as shown in figure 4, fluid emulation figure for embodiment 4 of the present invention, the figure is solidworks
Fluid emulation plug-in unit floxpress simulation results, are originally used for cromogram, will to meet requirement of the patent application document to drawing
It is converted to black-and-white two color, but still is clear and legible；The figure illustrate during practical application of the present invention fluid motion state and
Technical result described in this specification is consistent（There is backwash area i.e. between barrier bodies）；Shown result change plan with being tied in actual experiment
Fruit is consistent；The structure and embodiment 3 of embodiment 4 are similar, clear for view, and CONSTRUCTED SPECIFICATION is not repeated.
Embodiment 5, as viewed in figures 5-8, to apply embodiment of the present invention small-sized settler, by water channel
Device 5, container 6 are formed, and have water inlet 50, delivery port 51, vortex-like water channel 52, barrier bodies 53 on water channel device 5；Water channel device
5 with container 6 to be tightly connected, be tightly connected as prior art, clear for view is not drawn；Water channel device 5 with
Container 6 is combined together, and after being separated, can collect sediment from container 6 with particulate matter in efficient precipitation water.
Embodiment 6, it is changed on the basis of embodiment 1, water inlet position and delivery port position is carried out pair
Change.
Embodiment 7, it is changed on the basis of embodiment 2, water inlet position and delivery port position is carried out pair
Change.
Embodiment 8, it is changed on the basis of embodiment 3, water inlet position and delivery port position is carried out pair
Change.
Claims (1)
1. precipitate apparatus for clarifying, it is characterised in that：Mainly it is made up of water channel device, container；There is water inlet on water channel device
Mouth, delivery port, vortex-like water channel, barrier bodies；
In water channel device：Barrier bodies are distributed in vortex-like water channel；One end of all barrier bodies and vortex-like water channel telecentricity side inwall phase
Even, the other end points to and does not contact the nearly heart side inwall of vortex-like water channel；The end that all barrier bodies are not connected with vortex-like water channel inwall is arrived
The beeline of vortex-like water channel inwall is less than or equal to the half of vortex-like channel width;
Barrier bodies are formed in one with vortex-like waterway wall, and the diameter of water inlet is less than the diameter of delivery port；
For water channel device with container to be tightly connected, water channel device, can be with efficient precipitation water together with container combination
Grain thing, after being separated, can collect sediment from container;Described barrier bodies are bent plate shape；Described barrier bodies quantity is 4
It is individual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610507573.2A CN106075964B (en) | 2014-10-14 | 2014-10-14 | Device, environmental protecting device for settlement of sewage clarifying treatment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610507573.2A CN106075964B (en) | 2014-10-14 | 2014-10-14 | Device, environmental protecting device for settlement of sewage clarifying treatment |
| CN201410538992.3A CN104258606B (en) | 2014-10-14 | 2014-10-14 | A kind of channel structure that can be used for precipitation |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410538992.3A Division CN104258606B (en) | 2014-10-14 | 2014-10-14 | A kind of channel structure that can be used for precipitation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106075964A CN106075964A (en) | 2016-11-09 |
| CN106075964B true CN106075964B (en) | 2018-01-02 |
Family
ID=52150255
Family Applications (7)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610507865.6A Active CN105999778B (en) | 2014-10-14 | 2014-10-14 | Apparatus for clarifying, environmental protecting device |
| CN201610507876.4A Active CN106039780B (en) | 2014-10-14 | 2014-10-14 | Settlement of sewage processing unit |
| CN201410538992.3A Expired - Fee Related CN104258606B (en) | 2014-10-14 | 2014-10-14 | A kind of channel structure that can be used for precipitation |
| CN201610507533.8A Active CN106039777B (en) | 2014-10-14 | 2014-10-14 | Sewage precipitation device for environmental protection |
| CN201610507534.2A Active CN106039778B (en) | 2014-10-14 | 2014-10-14 | Available for the clarification of water processing unit of water factory, environmental protecting device, water processing factory |
| CN201610507573.2A Active CN106075964B (en) | 2014-10-14 | 2014-10-14 | Device, environmental protecting device for settlement of sewage clarifying treatment |
| CN201610507535.7A Active CN106039779B (en) | 2014-10-14 | 2014-10-14 | A kind of channel structure for having facilitation to environmental protection available for settlement of sewage |
Family Applications Before (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610507865.6A Active CN105999778B (en) | 2014-10-14 | 2014-10-14 | Apparatus for clarifying, environmental protecting device |
| CN201610507876.4A Active CN106039780B (en) | 2014-10-14 | 2014-10-14 | Settlement of sewage processing unit |
| CN201410538992.3A Expired - Fee Related CN104258606B (en) | 2014-10-14 | 2014-10-14 | A kind of channel structure that can be used for precipitation |
| CN201610507533.8A Active CN106039777B (en) | 2014-10-14 | 2014-10-14 | Sewage precipitation device for environmental protection |
| CN201610507534.2A Active CN106039778B (en) | 2014-10-14 | 2014-10-14 | Available for the clarification of water processing unit of water factory, environmental protecting device, water processing factory |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610507535.7A Active CN106039779B (en) | 2014-10-14 | 2014-10-14 | A kind of channel structure for having facilitation to environmental protection available for settlement of sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (7) | CN105999778B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169765B (en) * | 2015-10-20 | 2016-09-28 | 重庆交通大学 | Irrigation system inlet unit structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4711716A (en) * | 1985-09-20 | 1987-12-08 | Calltharp Glen R | Decanting apparatus |
| US7985334B2 (en) * | 2005-11-04 | 2011-07-26 | Epuramat S.A.R.L. | Device for thickening sludge carried along in waste water |
| CN102527149A (en) * | 2012-01-18 | 2012-07-04 | 安徽理士电池技术有限公司 | Sprinkled acid recycling device and pasting equipment of battery plates |
| CN104034702A (en) * | 2014-06-30 | 2014-09-10 | 宣尧杭 | Detection box used for detecting light transmittance of printing and dyeing wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH673644A5 (en) * | 1987-11-23 | 1990-03-30 | Benno Perren | |
| NL1000100C2 (en) * | 1995-04-10 | 1996-10-11 | Pacques Bv | A settling device for a liquid, gas, and particulate material contains fluid, as well as a cleaning device and a method for cleaning waste water provided with this. |
| JPH09276606A (en) * | 1996-04-11 | 1997-10-28 | Seiji Ishizuka | Method of settling and filtering foul water and tank for settling and filtering sewage |
| CN2453001Y (en) * | 2000-07-20 | 2001-10-10 | 陶志国 | Spiral tpye anaerobic sludge bed reactor |
| CN101962973A (en) * | 2009-07-21 | 2011-02-02 | 李成 | Wall with water treatment function |
| CN202538426U (en) * | 2012-02-06 | 2012-11-21 | 长春浩光水务有限责任公司 | Multilayer parallel-vane micro-vortex skew-plate set for water treatment |
| CN202983302U (en) * | 2012-12-24 | 2013-06-12 | 广东东鹏控股股份有限公司 | Sewage treatment device |
| CN203208735U (en) * | 2013-04-08 | 2013-09-25 | 威海丰泰橡胶技术有限公司 | Improved water treatment sloping plate |
| CN203436866U (en) * | 2013-09-14 | 2014-02-19 | 福建省闽清丰达生态农业大观园有限公司 | Novel water treatment device for sedimentation, sterilization and filtration |
| CN103977665B (en) * | 2014-05-30 | 2015-12-30 | 攀钢集团西昌钢钒有限公司 | Gas-liquid separator |
| CN204073522U (en) * | 2014-10-14 | 2015-01-07 | 成都育芽科技有限公司 | A kind of channel structure that can be used for precipitating |
-
2014
- 2014-10-14 CN CN201610507865.6A patent/CN105999778B/en active Active
- 2014-10-14 CN CN201610507876.4A patent/CN106039780B/en active Active
- 2014-10-14 CN CN201410538992.3A patent/CN104258606B/en not_active Expired - Fee Related
- 2014-10-14 CN CN201610507533.8A patent/CN106039777B/en active Active
- 2014-10-14 CN CN201610507534.2A patent/CN106039778B/en active Active
- 2014-10-14 CN CN201610507573.2A patent/CN106075964B/en active Active
- 2014-10-14 CN CN201610507535.7A patent/CN106039779B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4711716A (en) * | 1985-09-20 | 1987-12-08 | Calltharp Glen R | Decanting apparatus |
| US7985334B2 (en) * | 2005-11-04 | 2011-07-26 | Epuramat S.A.R.L. | Device for thickening sludge carried along in waste water |
| CN102527149A (en) * | 2012-01-18 | 2012-07-04 | 安徽理士电池技术有限公司 | Sprinkled acid recycling device and pasting equipment of battery plates |
| CN104034702A (en) * | 2014-06-30 | 2014-09-10 | 宣尧杭 | Detection box used for detecting light transmittance of printing and dyeing wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106039779A (en) | 2016-10-26 |
| CN106039778A (en) | 2016-10-26 |
| CN104258606B (en) | 2016-08-24 |
| CN106039777B (en) | 2017-12-29 |
| CN106039780A (en) | 2016-10-26 |
| CN106039778B (en) | 2018-06-22 |
| CN105999778B (en) | 2018-07-31 |
| CN106039779B (en) | 2018-01-02 |
| CN106039777A (en) | 2016-10-26 |
| CN104258606A (en) | 2015-01-07 |
| CN105999778A (en) | 2016-10-12 |
| CN106039780B (en) | 2018-01-09 |
| CN106075964A (en) | 2016-11-09 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Wei Inventor after: Zhu Zhengzhi Inventor before: Liu Wei Inventor before: Xiang Hongxian |
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| CB03 | Change of inventor or designer information | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171204 Address after: 320 room 10, building 518, No. 311199, Hangzhou Road, Yuhang District, Zhejiang, China Applicant after: HANGZHOU XIAOCHENG INDUSTRIAL DESIGN Co.,Ltd. Address before: 362200 Fujian city of Quanzhou province Jinjiang city Qingyang Street Quanan road Yinli Building Room 502 Applicant before: Liu Wei |
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Effective date of registration: 20180705 Address after: 235200 Suzhou City, Anhui Province, Xiaoxian Saint Quan Village North City Village Patentee after: ANHUI XIAOXIAN LINPING PAPER CO.,LTD. Address before: 311199 320, room 10, 518 rising road, Yuhang District, Hangzhou, Zhejiang. Patentee before: HANGZHOU XIAOCHENG INDUSTRIAL DESIGN Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
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