CN101949642A - Wide roller kiln for baking pattern penetrated bricks - Google Patents
Wide roller kiln for baking pattern penetrated bricks Download PDFInfo
- Publication number
- CN101949642A CN101949642A CN2010102561089A CN201010256108A CN101949642A CN 101949642 A CN101949642 A CN 101949642A CN 2010102561089 A CN2010102561089 A CN 2010102561089A CN 201010256108 A CN201010256108 A CN 201010256108A CN 101949642 A CN101949642 A CN 101949642A
- Authority
- CN
- China
- Prior art keywords
- kiln
- tube panel
- panel pipeline
- wide roller
- roller
- 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.)
- Pending
Links
Images
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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a wide roller kiln for baking pattern penetrated bricks. The kiln top of the wide roller kiln adopts a form of combining a flat top and an arc top, wherein the arc top part is built by a plurality of heavyweight mullite bricks; heat insulation cotton is spread on the built mullite bricks; the flat top on two sides of the arc top is supported by a supporting structure; the supporting structure consists of a metal pipe and a supporting frame; after the metal pipe passes through the flat top, two ends of the metal pipe are supported by the supporting frame to form beams crossing the kiln; a heat insulation layer is covered on a hollow refractory brick; cold air of the kiln enters from the metal pipe and is conveyed into a variable stroke burner system through the other side of the kiln; the variable stroke burner system consists of a plurality of low-flow nozzles and a plurality of high-flow nozzles, and the pressure of each nozzle is changed and the nozzle range and the flame length are adjusted according to the actual working condition of the kiln; a quenching device on a quenching section of the kiln ensures the pressure balance of the quenching section; and a technique of cooling a primary air source is utilized in an energy-saving pipe shielding system at the kiln tail so that cold air outside the kiln and hot air inside the kiln exchange heat to improve the cooling effect and realize step utilization of waste heat of the cooling zone.
Description
Technical field:
The present invention relates to the kiln technical field, refer in particular to a kind of wide roller kiln that is used for the roasting pattern permeating tile.
Background technology:
At present, along with the dimensions of ceramic yield and ceramic tile is increasing, kiln be build longer and longer, section is also more and more wideer, the difficult control of temperature in the kiln, section temperature difference is big, unstable product quality, distortion, aberration etc. burn till defect problem and also are on the rise.In order to solve kiln cross section temperature difference problem, all the time, both at home and abroad producer attempts to transform the internal structure of kiln and burns till principle and obtains better to burn till quality and energy-saving effect.As external producer mainly is to utilize the pulse technique solution of starting with and since this control system will based on natural gas burning kiln, kiln length will 120 meters with interior, kiln operating mode simple and stable, fail to obtain at home fine utilization.Also use another technology abroad: the flame shunting device, but this technology also is to promote in the kiln that is fuel with the natural gas, have greatly restricted gender, when using in the conventional at home kiln, unexpected operating mode such as be certain to occur to stop up, water bursts and this a whole set of control principle was lost efficacy.The domestic method of samming grizzly bar group that also adopts is eliminated the temperature difference of roller way kiln cross section, but all can not promote the use of because of effect is undesirable.Roller kilns are that craft is built by laying bricks or stones, the working equipment of hot operation, have only good heat insulating, kiln structure high temperature resistant, that steadiness is high, the interior cross section of kiln has a narrow range of temperature to do powerful backing, could after changing, the kiln internal structure reach the effect that improves product yield and quality, the minimizing cross section temperature difference, improves utilization rate of waste heat.
Summary of the invention:
The objective of the invention is to overcome the deficiencies in the prior art, a kind of wide roller kiln that the kiln section temperature difference is little, utilization rate of waste heat is high, cost is low, steadiness is strong that is used for the roasting pattern permeating tile is provided.
For achieving the above object, technical scheme provided by the present invention is: a kind of wide roller kiln that is used for the roasting pattern permeating tile, the form that described wide roller kiln kiln top adopts flat-top to combine with the arc top, its arc top portion is tiled by several piece heavy mullite brick and forms, the centering angle on its arc top is 45 ° ~ 75 °, spread 1 ~ 3 layer of heat-preservation cotton above the mullite brick after tiling, both sides, arc top are flat-tops of being built by hollow refractory brick, flat-top supports by supporting structure, described supporting structure is made up of with the bearing support that is positioned at the kiln both sides the horizontal metal pipe across kiln, wherein, after metal tube passes the flat-top of being built by hollow refractory brick, two ends are supported by bearing support, formation is across the beam of kiln, be coated with the ceramic fibre heat-insulation layer on the hollow refractory brick after building, the cold air of kiln is entered by metal tube, and by kiln opposite side inflow collection house steward, but send into again in the range buner system, but described range buner system is positioned at kiln preheating zone and clinkering zone, it is combined by several low discharge burners and big flow burner, but the range buner system changes each burner pressure according to the kiln actual condition, and the adjusting nozzle range and the length of flame, eliminate section temperature difference in the kiln, the kiln quench zone is equipped with quenching apparatus, guarantee the pressure balance of quench zone, the kiln tail is equipped with the energy-saving pipe screen system, and elementary wind regime technology is cooled off in the utilization of energy-saving pipe screen system, makes outer cold air of kiln and the interior hot-air of kiln carry out heat exchange, improve cooling effect, realize the exhaust heat stepped utilization of salband.
The described low discharge burner that is positioned at the kiln preheating zone, big flow burner are two, interlaced being assemblied under the roller.
The described upper and lower both sides of roller that are positioned at the kiln clinkering zone are respectively fitted with interlaced low discharge burner and big flow burner.
Described quenching apparatus includes upward pressure compensating pipe and downforce compensating pipe, and described upward pressure compensating pipe and downforce compensating pipe level respectively traverse in kiln body quench zone, and is positioned at the upper and lower both sides of roller.
Described energy-saving pipe screen system is installed in quench zone and the slow cooling section along kiln length direction or kiln cross direction, it includes tube panel pipeline group, following tube panel pipeline group, wherein, last tube panel pipeline group is positioned at roller top kiln body inside top, and be connected by the outer steelframe of chuck and hook and kiln, following tube panel pipeline group is installed in the kiln body bottom inside of roller below.
Upward tube panel pipeline, following tube panel pipeline are formed by many respectively for described upward tube panel pipeline group, following tube panel pipeline group.
Described upward tube panel pipeline is round tube or rectangular tube, and the last tube panel pipeline after installing is positioned on the same horizontal plane.
Described tube panel pipeline down is round tube or rectangular tube, and the following tube panel pipeline after installing is positioned on the same horizontal plane.
The described last tube panel pipeline group that is positioned at quench zone, the equivalent diameter of tube panel pipeline group is 100 ~ 400mm down.
The described last tube panel pipeline group that is positioned at the slow cooling section, the equivalent diameter of tube panel pipeline group is 50-250mm down.
The present invention is after having adopted such scheme, by the kiln top is set as flat arc top form, section is had a narrow range of temperature, the a large amount of usually air-flow laminations that produce of no semicircular arch kiln, because it has certain arch arc, do not have the ceiling board tenesmus of couter-ceiling kiln generation, the defective of fracture again yet, so just saved the fuel in the sintering process, simultaneously saved the fuel consumption of lighting a fire after the reparation of couter-ceiling kiln again, energy-saving effect is remarkable.The steadiness of this kiln top Ji Gongxingding and the good property of temperature of flat-top be in one, and material is economized, cost is low, product yield and quality are guaranteed.After but this programme adopts the range buner system,, adopt method of temperature-control by to change each burner pressure according to the kiln actual condition, regulate nozzle range, the length of flame, low discharge combines with big flow burner, and short range combines with long-range burner range, eliminates section temperature difference in the kiln with this.The quenching apparatus of this programme prevents to reduce to cause the flue gas in the clinkering zone to flow backward to quench zone because of the pressure of quench zone, guarantees the stable operation of kiln.Elementary wind regime technology is cooled off in the energy-saving pipe screen system utilization of kiln tail, makes outer cold air of kiln and the interior hot-air of kiln carry out heat exchange, improves cooling effect, realizes the exhaust heat stepped utilization of salband.Adopt and to satisfy the requirement that the advanced ceramics enterprise development has a narrow range of temperature to cross section in solid and reliable, the kiln of kiln masonry behind this programme, and can also realize exhaust heat stepped utilization to salband, improve utilization rate of waste heat, cut down the consumption of energy, improve the business economic benefit.
Description of drawings:
Fig. 1 is the structural representation of integral body of the present invention.
Fig. 2 is the structural representation on kiln of the present invention top.
But Fig. 3 is the structural representation of range buner system in the clinkering zone of the present invention.
But Fig. 4 is the structural representation of range buner system in the preheating zone of the present invention.
Fig. 5 is the structural representation of energy-saving pipe screen system of the present invention when the kiln length direction is installed.
Fig. 6 is the structural representation of energy-saving pipe screen system of the present invention when the kiln cross direction is installed.
Reference numeral: tube panel pipeline under tube panel pipeline group, 18-chuck, 19-hook, the last tube panel pipeline of 20-, the 21-under 1-mullite brick, 2-heat-preservation cotton, the hollow refractory brick of 3-, 4-supporting structure, 5-metal tube, 6-bearing support, 7-ceramic fibre heat-insulation layer, 8-preheating zone, 9-clinkering zone, 10-low discharge burner, the big flow burner of 11-, 12-quench zone, 13-downforce compensating pipe, 14-upward pressure compensating pipe, 15-slow cooling section, the last tube panel pipeline group of 16-, the 17-.
The specific embodiment:
The invention will be further described to accompanying drawing 6 below in conjunction with accompanying drawing 1, preferred embodiment of the present invention is: the described wide roller kiln that is used for the roasting pattern permeating tile of present embodiment, the form that described wide roller kiln kiln top adopts flat-top to combine with the arc top, its arc top portion is tiled by several piece heavy mullite brick 1 and forms, the centering angle on its arc top is 45 ° ~ 75 °, 3 layers of heat-preservation cotton 2 in shop above the mullite brick 1 after tiling, both sides, arc top are flat-tops of being built by hollow refractory brick 3, flat-top is by supporting structure 4 supportings, described supporting structure 4 is made up of with the bearing support 6 that is positioned at the kiln both sides the horizontal metal pipe 5 across kiln, wherein, after metal tube 5 passes the flat-top of being built by hollow refractory brick 3, two ends are supported by bearing support 6, formation is across the beam of kiln, be coated with ceramic fibre heat-insulation layer 7 on the hollow refractory brick 3 after building, the cold air of kiln is entered by metal tube 5, and by kiln opposite side inflow collection house steward, but send into again in the range buner system, the kiln top of present embodiment is set as flat arc top form, section is had a narrow range of temperature, the a large amount of usually air-flow laminations that produce of no semicircular arch kiln, again because it has certain arch arc, there is not the ceiling board tenesmus that the couter-ceiling kiln takes place yet, the defective of fracture, so just saved the fuel in the sintering process, simultaneously saved the fuel consumption of lighting a fire after the reparation of couter-ceiling kiln again, energy-saving effect is remarkable.The steadiness of this kiln top Ji Gongxingding and the good property of temperature of flat-top be in one, and material is economized, cost is low, product yield and quality are guaranteed.But described range buner system is positioned at kiln preheating zone 8 and clinkering zone 9, it is combined by several low discharge burners 10 and big flow burner 11, wherein, be positioned at the low discharge burner 10 of kiln preheating zone 8, big flow burner 11 is two, interlaced being assemblied under the roller.The upper and lower both sides of roller that are positioned at kiln clinkering zone 9 are respectively fitted with interlaced low discharge burner 10 and big flow burner 11.But the range buner system of present embodiment is according to the kiln actual condition, adopt method of temperature-control by to change each burner pressure, regulate nozzle range, the length of flame, low discharge combines with big flow burner, short range combines with long-range burner range, eliminates section temperature difference in the kiln with this.Kiln quench zone 12 is equipped with quenching apparatus, guarantees the pressure balance of quench zone 12, and the kiln tail is equipped with the energy-saving pipe screen system, elementary wind regime technology is cooled off in the utilization of energy-saving pipe screen system, make outer cold air of kiln and the interior hot-air of kiln carry out heat exchange, improve cooling effect, realize the exhaust heat stepped utilization of salband.
Described quenching apparatus includes upward pressure compensating pipe 14 and downforce compensating pipe 13, and described upward pressure compensating pipe 14 and downforce compensating pipe 13 level respectively traverse in kiln body quench zone 12, and is positioned at the upper and lower both sides of roller.The quenching apparatus of present embodiment prevents to reduce to cause the flue gas in the clinkering zone to flow backward to quench zone because of the pressure of quench zone 12, guarantees the stable operation of kiln.
Described energy-saving pipe screen system is installed in quench zone 12 and the slow cooling section 15 along kiln length direction or kiln cross direction, it includes tube panel pipeline group 16, following tube panel pipeline group 17, wherein, upward tube panel pipeline 20, following tube panel pipeline 21 are formed by many respectively for last tube panel pipeline group 16, following tube panel pipeline group 17.And last tube panel pipeline 20 is round tube or rectangular tube, is positioned at after the installation on the same horizontal plane.Following tube panel pipeline 21 is round tube or rectangular tube, is positioned at after the installation on the same horizontal plane.Last tube panel pipeline group 16 is positioned at roller top kiln body inside top, and is connected with the outer steelframe of hook 19 and kiln by chuck 18, and following tube panel pipeline group 17 is installed in the kiln body bottom inside of roller below.Be positioned at the last tube panel pipeline group 16 of quench zone 12, down the equivalent diameter of tube panel pipeline group 17 is 100 ~ 400mm.Be positioned at the last tube panel pipeline group 16 of slow cooling section 15, down the equivalent diameter of tube panel pipeline group 17 is 50-250mm.Elementary wind regime technology is cooled off in the energy-saving pipe screen system utilization of kiln tail, makes outer cold air of kiln and the interior hot-air of kiln carry out heat exchange, improves cooling effect, realizes the exhaust heat stepped utilization of salband.Adopt and to satisfy the requirement that the advanced ceramics enterprise development has a narrow range of temperature to cross section in solid and reliable, the kiln of kiln masonry behind this programme, and can also realize exhaust heat stepped utilization to salband, improve utilization rate of waste heat, cut down the consumption of energy, improve the business economic benefit.
The embodiment of the above only is the present invention's preferred embodiment, is not to limit practical range of the present invention with this, so the variation that all shapes according to the present invention, principle are done all should be encompassed in protection scope of the present invention.
Claims (10)
1. wide roller kiln that is used for the roasting pattern permeating tile, it is characterized in that: the form that described wide roller kiln kiln top adopts flat-top to combine with the arc top, its arc top portion is tiled by several piece heavy mullite brick (1) and forms, the centering angle on its arc top is 45 ° ~ 75 °, shop 1 ~ 3 layer of heat-preservation cotton (2) above the mullite brick after tiling (1), both sides, arc top are flat-tops of being built by hollow refractory brick (3), flat-top is by supporting structure (4) supporting, described supporting structure (4) is by forming across the horizontal metal pipe (5) of kiln and the bearing support (6) that is positioned at the kiln both sides, wherein, after metal tube (5) passes the flat-top of being built by hollow refractory brick (3), two ends are supported by bearing support (6), formation is across the beam of kiln, be coated with ceramic fibre heat-insulation layer (7) on the hollow refractory brick (3) after building, the cold air of kiln is entered by metal tube (5), and by kiln opposite side inflow collection house steward, but send into again in the range buner system, but described range buner system is positioned at kiln preheating zone (8) and clinkering zone (9), it is combined by several low discharge burners (10) and big flow burner (11), but the range buner system changes each burner pressure according to the kiln actual condition, and the adjusting nozzle range and the length of flame, eliminate section temperature difference in the kiln, kiln quench zone (12) is equipped with quenching apparatus, guarantee the pressure balance of quench zone (12), the kiln tail is equipped with the energy-saving pipe screen system, elementary wind regime technology is cooled off in the utilization of energy-saving pipe screen system, make outer cold air of kiln and the interior hot-air of kiln carry out heat exchange, improve cooling effect, realize the exhaust heat stepped utilization of salband.
2. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 1 is characterized in that: be positioned at the low discharge burner (10) of kiln preheating zone (8), big flow burner (11) is two, interlaced being assemblied under the roller.
3. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 1 is characterized in that: the upper and lower both sides of roller that are positioned at kiln clinkering zone (9) are respectively fitted with interlaced low discharge burner (10) and big flow burner (11).
4. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 1, it is characterized in that: quenching apparatus includes upward pressure compensating pipe (14) and downforce compensating pipe (13), described upward pressure compensating pipe (14) and downforce compensating pipe (13) level respectively traverse in kiln body quench zone (12), and are positioned at the upper and lower both sides of roller.
5. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 1, it is characterized in that: the energy-saving pipe screen system is installed in quench zone (12) and slow cooling section (15) along kiln length direction or kiln cross direction, it includes tube panel pipeline group (16), following tube panel pipeline group (17), wherein, last tube panel pipeline group (16) is positioned at roller top kiln body inside top, and be connected with the outer steelframe of hook (19) and kiln by chuck (18), following tube panel pipeline group (17) is installed in the kiln body bottom inside below the roller.
6. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 5 is characterized in that: upward tube panel pipeline (20), following tube panel pipeline (21) are formed by many respectively to go up tube panel pipeline group (16), following tube panel pipeline group (17).
7. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 5 is characterized in that: going up tube panel pipeline (20) is round tube or rectangular tube, and the last tube panel pipeline (20) after installing is positioned on the same horizontal plane.
8. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 5 is characterized in that: following tube panel pipeline (21) is round tube or rectangular tube, and the following tube panel pipeline (21) after installing is positioned on the same horizontal plane.
9. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 5 is characterized in that: be positioned at the last tube panel pipeline group (16) of quench zone (12), down the equivalent diameter of tube panel pipeline group (17) is 100～400mm.
10. a kind of wide roller kiln that is used for the roasting pattern permeating tile according to claim 5 is characterized in that: be positioned at the last tube panel pipeline group (16) of slow cooling section (15), down the equivalent diameter of tube panel pipeline group (17) is 50-250mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102561089A CN101949642A (en) | 2010-08-17 | 2010-08-17 | Wide roller kiln for baking pattern penetrated bricks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102561089A CN101949642A (en) | 2010-08-17 | 2010-08-17 | Wide roller kiln for baking pattern penetrated bricks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101949642A true CN101949642A (en) | 2011-01-19 |
Family
ID=43453224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102561089A Pending CN101949642A (en) | 2010-08-17 | 2010-08-17 | Wide roller kiln for baking pattern penetrated bricks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101949642A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713354A (en) * | 2015-03-13 | 2015-06-17 | 中国科学院广州能源研究所 | Novel energy-saving wide-body ceramic roller kiln |
| CN104854417A (en) * | 2012-10-26 | 2015-08-19 | 阿斯特科技有限公司 | Combustion system for the production of ceramic linings |
-
2010
- 2010-08-17 CN CN2010102561089A patent/CN101949642A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104854417A (en) * | 2012-10-26 | 2015-08-19 | 阿斯特科技有限公司 | Combustion system for the production of ceramic linings |
| CN104713354A (en) * | 2015-03-13 | 2015-06-17 | 中国科学院广州能源研究所 | Novel energy-saving wide-body ceramic roller kiln |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201145475Y (en) | Roll table kiln burned by large specification thin sheet ceramic tile | |
| CN102748942A (en) | Wide-bodied energy-saving and environment-friendly tunnel kiln | |
| CN202675857U (en) | Wide-body energy-saving and environment-friendly tunnel kiln | |
| CN102875012B (en) | Energy-saving type improved method for heating apparatus of disc automatic pipebender | |
| CN105258504A (en) | Tunnel kiln and combustion control method thereof | |
| CN103627882A (en) | Regenerative hot rolled strip heating furnace and slab heating process | |
| CN209371763U (en) | A kind of tunnel oven for bauxite roasting | |
| CN109592916A (en) | A kind of double thorax kilns | |
| CN101949642A (en) | Wide roller kiln for baking pattern penetrated bricks | |
| CN103868066A (en) | Multi-stage combustion radiant tube heating device | |
| CN203163478U (en) | Novel energy-saving kiln | |
| CN201476597U (en) | Ceramic kiln smoke purifying and surplus heat comprehensive utilization device | |
| CN105403037A (en) | Combustion supporting air heating and energy storing energy-saving roller kiln | |
| CN103175395B (en) | Produce the roller kilns of crystallite foamed ceramics | |
| CN201772748U (en) | Wide-bodied roller kiln for roasting color-penetrated tiles | |
| CN202938500U (en) | Interlayer-ventilating type high-temperature-resisting hot blast stove | |
| CN103759254B (en) | A kind of regenerative combustion system | |
| CN201772742U (en) | Kiln roof of wide roller kiln used for calcining polished tiles | |
| CN204058574U (en) | A kind of hot-dip galvanized pan fiber furnace body | |
| CN203403121U (en) | Device for achieving high blast temperature by virtue of low calorific value coal gas and high temperature combustion-supporting air | |
| CN204574837U (en) | Roller kilns waste heat combustion air heating apparatus | |
| CN201772737U (en) | Biscuit firing roller kiln for producing interior wall tile | |
| CN101338356B (en) | Heat treating furnace using porous medium combustor | |
| CN101566429A (en) | Large capacity temperature equalizing energy saving roller kiln | |
| CN201875724U (en) | Heat collecting pipe type cremator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG ZHONGYAO KILN CO., LTD. Free format text: FORMER OWNER: LIU DAN Effective date: 20111209 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20111209 Address after: 528226 Foshan, Nanhai District, Guangdong Luo Village Industrial Park Road East Applicant after: Foshan Zhongyao Ceramic Kiln Co., Ltd. Address before: Nanhai District of Guangdong city of Foshan province Luo village 528226 Industrial Avenue East Xiabai pottery kiln in Foshan Development Co. Ltd. Applicant before: Liu Dan |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110119 |