CN102677572A - Method for stirring renewable asphalt mixture - Google Patents
Method for stirring renewable asphalt mixture Download PDFInfo
- Publication number
- CN102677572A CN102677572A CN2012101540883A CN201210154088A CN102677572A CN 102677572 A CN102677572 A CN 102677572A CN 2012101540883 A CN2012101540883 A CN 2012101540883A CN 201210154088 A CN201210154088 A CN 201210154088A CN 102677572 A CN102677572 A CN 102677572A
- Authority
- CN
- China
- Prior art keywords
- regeneration
- shaft
- renewable
- aggregate
- reclaimed materials
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a method for stirring a renewable asphalt mixture. The method comprises the following steps that a renewable recycled material is subjected to primary smashing in a cold state; the renewable recycled material enters a drying cylinder through a recycling ring for heating and softening with new aggregate; a renewable recycled asphalt mixture obtained by mixing the renewable recycled material with the new aggregate enters a continuous double-shaft stirring pan for stirring and rubbing; the renewable recycled material is subjected to secondary smashing; and the renewable recycled asphalt mixture flows out from the discharging hole of the continuous double-shaft stirring pan, enters the charging hole of an aggregate hoisting machine, and is fed into a vibration screen by the aggregate hoisting machine for screening. By the method, various types of aggregate are separated thoroughly after the renewable recycled material is treated; the heated mixture cannot be adhered to the screen mesh of the vibration screen when passing through the vibration screen; the graduation precision of the mixture is improved to a great extent; the method is low in cost and convenient to operate; and the addition ratio of the renewable recycled material is improved.
Description
Technical field
The present invention relates to asphalt-regenerating recovery technology field, relate in particular to a kind of companion of factory heat regeneration reclaimed materials.
Background technology
Along with the arrival of overhaul phase of highway in China flexible pavement, country widelys popularize reclaimed asphalt mixture in application in engineering.To different highway engineering construction schemes, the process of bituminous mixture regeneration is different, has caused relevant reclaim equiment of a great variety.Bituminous mixture factory accompanies hot reclaim equiment owing to the regenerating mixture quality of producing is high, compliance is widely used by force.By production technology, bituminous mixture factory accompanies hot reclaim equiment to be divided into two kinds of continous way and batch (-type)s.Receive the influence of China's specification of aggregate factor, the asphalt mixing plant of domestic use is main with batch (-type) mainly.
At present; Batch (-type) bituminous mixture factory accompanies hot regeneration techniques to add the technology of regeneration reclaimed materials; Be to regenerate reclaimed materials and the evenly mixing in drying of Xin Re aggregate; Import the grating of sieve screening of shaking again,, form the compound that meets the construction of the highway standard through stirring, add powder and pitch to guarantee that compound is certain.
In actual production, because regeneration reclaimed materials surface has all wrapped pitch, separate in the crushing and screening in the cold conditions in early stage, can't reach complete fragmentation.Because regeneration reclaimed materials medium pitch and aggregate are sticky in together, form the granule that varies in size, various aggregates can't reach the desired separated state.In addition; Because adding new hot aggregate, reclaimed materials in the process of mixing, is heated; When the regeneration reclaimed materials adds percentage by weight greater than 5% the time, bitumen recovery material material group promptly receives thermal softening, because pitch is sticky in various aggregates together; The sieve that shakes only sieves according to size, can't realize effective screening at all; Simultaneously, the pitch in the reclaimed materials can stick on the screen cloth of the sieve that shakes, and causes production capacity to descend, and grating is chaotic.The road of the compound laying that the grating precision is low shortens application life greatly, and innovation need drop into lot of manpower and material resources again.
The reclaimed materials of can realizing now regenerating reaches the drying of percentage by weight 20%, and cost is high, promotes the use of to have received very big restriction.
Therefore, how the low-cost adding proportion that improves grating precision, raising regeneration reclaimed materials becomes the technical problem that the reclaimed asphalt mixture urgent need overcomes.
Summary of the invention
The object of the present invention is to provide a kind of stirring means of reclaimed asphalt mixture, the regeneration reclaimed materials is handled various aggregates are thoroughly separated; Compound through heating can not sticked on the screen cloth of the sieve that shakes when sieving through shaking; The grating precision of the raising compound of very big degree; Cost is lower, and is easy and simple to handle; Improved the adding proportion of regeneration reclaimed materials.
For reaching said purpose, the invention discloses a kind of regeneration and reclaim the stirring means of bituminous mixture, this method comprises:
(1) once pulverizes under the regeneration reclaimed materials cold conditions;
(2) the regeneration reclaimed materials gets in the drying and new aggregate thermoplastic;
(3) the regeneration reclaimed materials reclaims bituminous mixture with the mixed regeneration of new aggregate and gets into continous way twin shaft agitated kettle agitating friction, and regeneration reclaimed materials secondary is pulverized;
(4) the discharging opening outflow of bituminous mixture from continous way twin shaft agitated kettle reclaimed in regeneration, gets into the charging aperture of aggregate elevator, sent into to shake by aggregate elevator and sieves.
Regeneration reclaimed materials shared percentage by weight in the compound of regeneration reclaimed materials and new aggregate is less than 35%.
Said drying is the drying that has the regeneration ring.
Said continous way twin shaft agitated kettle comprises motor, reductor, shaft, paddle, pot body; Symmetry is equipped with shaft in the left and right sides, middle part of pot body, is uniformly distributed with on the said shaft to be provided with many group paddles; Said paddle comprises mixing arm and stirring vane, and said stirring vane is fixedly installed on the outer end of mixing arm; Spacing between said two shafts is greater than the length of paddle and less than the length of two paddles; Be respectively equipped with at the two ends, bottom of pot and same axle center of shaft and the globoidal structure that is complementary with blade, the two ends of said arc structure are tangent with pot wall, base, the bottom of a pan respectively; Said shaft is connected the back and is connected with motor with reductor.
The vertical shaft of paddle axle center in the said continous way twin shaft agitated kettle is arranged on the shaft.
Be provided with sychronisation between two shafts in the said continous way twin shaft agitated kettle, make the diaxon locking phase to rotation.
According to the method for the invention, below can realizing:
(1) will regenerate reclaimed materials with new hot aggregate stir process, because the building stones of various thicknesses in the new aggregate through the friction that is in contact with one another of various materials with the regeneration reclaimed materials, thereby make the various aggregates in the regeneration reclaimed materials material group thoroughly broken apart;
(2) in the process that is in contact with one another friction of the various materials of new aggregate and regeneration reclaimed materials, the pitch on regeneration reclaimed materials surface also is distributed to the virgin material surface, when increasing the pitch distribution area, has reduced the adhesiveness of pitch; Compound can not stick on the screen cloth of the sieve that shakes when sieving through shaking, and reclaimed materials adds the sticking problem that causes behind the vast scale in the compound thereby solved;
(3) because the various aggregates in the regeneration reclaimed materials are thoroughly broken, when the sieve that therefore shakes sieves according to the size of aggregate, guarantee the aggregate screening precision, thereby improved the grating precision of compound largely, prolonged the application life of road;
(4) continous way twin shaft agitated kettle cost is lower, and the charging aperture of continous way twin shaft agitated kettle is connected with the discharging opening of drying, the discharging opening of continous way twin shaft agitated kettle is connected and can realizes with the charging aperture of aggregate elevator, and is easy and simple to handle;
(5) will the regenerate adding proportion of reclaimed materials has brought up to 35%.
Detailed content of the present invention can through after explanation and the institute's accompanying drawing stated obtain.
Description of drawings
Fig. 1 is a schematic flow sheet of the present invention;
Fig. 2 is the front view of continous way agitated kettle among the present invention;
Fig. 3 is the left view of continous way twin shaft agitated kettle among the present invention;
Fig. 4 is the vertical view of continous way twin shaft agitated kettle among the present invention;
Fig. 5 is the upper left side view of continous way twin shaft agitated kettle among the present invention;
Fig. 6 is the lower right side view of continous way twin shaft agitated kettle among the present invention;
Among the figure, 1-drying, the 2-ring of regenerating, 3-continous way twin shaft agitated kettle, 3.1.1-motor a; 3.1.2-motor b, 3.2.1-reductor a, 3.2.2-reductor b, 3.3.1-shaft a, 3.3.2-shaft b; 3.4-paddle, 3.5-mixing arm, 3.6-stirring vane, 3.7-pot body; The sieve 3.8-charging aperture, 3.9-discharging opening, 4-aggregate elevator, 5-shake.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the disclosure is described further.
Shown in accompanying drawing 1, drying 1 left end is provided with charging aperture, right-hand member is provided with discharging opening, and drying 1 top left is provided with regeneration ring 2; Continous way twin shaft agitated kettle 3 upper surface left side central portion have charging aperture 3.8, and the bottom surface right side central has discharging opening 3.9, and aggregate elevator 4 bottoms are provided with charging aperture, the top is provided with discharging opening; Shaking, sieve 5 left ends are provided with charging aperture, right-hand member is provided with discharging opening; The discharging opening of drying 1 links to each other with the charging aperture 3.8 of continous way twin shaft agitated kettle 3; The discharging opening 3.9 of continous way twin shaft agitated kettle 3 links to each other with the charging aperture of aggregate elevator 4; The discharging opening of aggregate elevator 4 links to each other with the charging aperture of the sieve 5 that shakes.
Step 1: regeneration reclaimed materials cold conditions is separated broken;
Step 2: the regeneration reclaimed materials gets into drying 1 through regeneration ring 2, with new aggregate thermoplastic;
Step 3: the regeneration reclaimed materials reclaims bituminous mixture with the mixed regeneration of new aggregate and gets into continous way twin shaft agitated kettle 3 agitating frictions, and regeneration reclaimed materials secondary is pulverized;
Step 4: discharging opening 3.9 outflows of bituminous mixture from continous way twin shaft agitated kettle 3 are reclaimed in regeneration, get into the charging aperture of aggregate elevator 4, send into the sieve 5 that shakes by aggregate elevator 4 and sieve.
Regeneration reclaimed materials shared percentage by weight in the compound of regeneration reclaimed materials and new aggregate is 35%.
Said drying 1 is for having the drying of regeneration ring.
Shown in accompanying drawing 2-accompanying drawing 6; Continous way twin shaft agitated kettle 3 comprises motor a3.1.1, motor b3.1.2, reductor a3.2.1, reductor b3.2.2, shaft a3.3.1, shaft b3.3.2, paddle 3.4, mixing arm 3.5, stirring vane 3.6, pot body 3.7, charging aperture 3.8, discharging opening 3.9; It is characterized in that: the pot left and right sides, body 3.7 middle part is symmetrically arranged with shaft a3.3.1 and shaft b3.3.2, is uniformly distributed with on said shaft a3.3.1 and the shaft b3.3.2 to be provided with many group paddles 3.4; Said paddle 3.4 comprises mixing arm 3.5 and stirring vane 3.6, and said stirring vane 3.6 is fixedly installed on the outer end of mixing arm 3.5; Spacing between said shaft a3.3.1 and the shaft b3.3.2 is greater than the length of paddle 3.4 and less than the length of two paddles 3.4; Pot two ends, body 3.7 bottom surface are respectively equipped with and shaft a3.3.1, the same axle center of shaft b3.3.2 and the globoidal structure that is complementary with paddle 3.4, and the two ends of said arc structure are tangent with pot wall, base, the bottom of a pan respectively; Pot body 3.7 upper surface left side central portion have charging aperture 3.8, and the bottom surface right side central has discharging opening 3.9; Said shaft a3.3.1 is connected the back and is connected with motor a3.1.1 with reductor a3.2.1, said shaft a3.3.2 is connected the back and is connected with motor a3.1.2 with reductor a3.2.2.
Paddle 3.4 vertical shaft a3.3.1 in the said continous way twin shaft agitated kettle 3 are arranged at the last or vertical shaft b3.3.2 axle center of shaft a3.3.1 and are arranged on the shaft b3.3.2.
Be provided with sychronisation between shaft a3.3.1 in the said continous way twin shaft agitated kettle 3 and the shaft b3.3.2, make shaft a3.3.1 and shaft b3.3.2 locking phase to rotation.
Beneficial effect of the present invention is:
(1) will regenerate reclaimed materials with new hot aggregate stir process, because the building stones of various thicknesses in the new aggregate through the friction that is in contact with one another of various materials with the regeneration reclaimed materials, thereby make the various aggregates in the regeneration reclaimed materials material group thoroughly broken apart;
(2) in the process that is in contact with one another friction of the various materials of new aggregate and regeneration reclaimed materials, the pitch on regeneration reclaimed materials surface also is distributed to the virgin material surface, when increasing the pitch distribution area, has reduced the adhesiveness of pitch; Compound can not stick on the screen cloth of the sieve that shakes when sieving through shaking, and reclaimed materials adds the sticking problem that causes behind the vast scale in the compound thereby solved;
(3) because the various aggregates in the regeneration reclaimed materials are thoroughly broken, when the sieve that therefore shakes sieves according to the size of aggregate, guarantee the aggregate screening precision, thereby improved the grating precision of compound largely, prolonged the application life of road;
(4) continous way twin shaft agitated kettle cost is lower, and the charging aperture of continous way twin shaft agitated kettle is connected with the discharging opening of drying, the discharging opening of continous way twin shaft agitated kettle is connected and can realizes with the charging aperture of aggregate elevator, and is easy and simple to handle;
(5) will the regenerate adding proportion of reclaimed materials has brought up to 35%.
It is obvious that, and above description and record only are for example rather than in order to limit disclosure of the present invention, application or use.Though described and be described in the drawings embodiment in an embodiment; But the optimal mode that the present invention does not limit by the accompanying drawing example and the conduct of describing is in an embodiment thought at present is with the specific examples of the instruction of embodiment of the present invention, and scope of the present invention will comprise any embodiment of the manual that falls into the front and appended claim.
Claims (6)
1. regenerate and reclaim the stirring means of bituminous mixture for one kind, this method comprises:
(1) once pulverizes under the regeneration reclaimed materials cold conditions;
(2) the regeneration reclaimed materials passes through in the regeneration ring entering drying and new aggregate thermoplastic;
(3) the regeneration reclaimed materials reclaims bituminous mixture with the mixed regeneration of new aggregate and gets into continous way twin shaft agitated kettle agitating friction, and regeneration reclaimed materials secondary is pulverized;
(4) the discharging opening outflow of bituminous mixture from continous way twin shaft agitated kettle reclaimed in regeneration, gets into the charging aperture of aggregate elevator, sent into to shake by aggregate elevator and sieves.
2. the stirring means of regeneration recovery bituminous mixture according to claim 1 is characterized in that: regeneration reclaimed materials shared percentage by weight in the compound of regeneration reclaimed materials and new aggregate is less than 35%.
3. the stirring means of bituminous mixture is reclaimed in regeneration according to claim 1, it is characterized in that: said drying is the drying that has the regeneration ring.
4. the stirring means of bituminous mixture is reclaimed in regeneration according to claim 1, it is characterized in that: said continous way twin shaft agitated kettle comprises motor, reductor, shaft, paddle, pot body; Symmetry is equipped with shaft in the left and right sides, middle part of pot body, is uniformly distributed with on the said shaft to be provided with many group paddles; Said paddle comprises mixing arm and stirring vane, and said stirring vane is fixedly installed on the outer end of mixing arm; Spacing between said two shafts is greater than the length of paddle and less than the length of two paddles; Be respectively equipped with at the two ends, bottom of pot and same axle center of shaft and the globoidal structure that is complementary with blade, the two ends of said arc structure are tangent with pot wall, base, the bottom of a pan respectively; Said shaft is connected the back and is connected with motor with reductor.
5. according to the stirring means of claim 1 or 4 described regeneration recovery bituminous mixtures, it is characterized in that: the vertical shaft of said paddle axle center is arranged on the shaft.
6. according to the stirring means of claim 1 or 4 described regeneration recovery bituminous mixtures, it is characterized in that: be provided with sychronisation between two shafts, make the diaxon locking phase to rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210154088.3A CN102677572B (en) | 2012-05-17 | 2012-05-17 | Method for stirring renewable asphalt mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210154088.3A CN102677572B (en) | 2012-05-17 | 2012-05-17 | Method for stirring renewable asphalt mixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102677572A true CN102677572A (en) | 2012-09-19 |
| CN102677572B CN102677572B (en) | 2014-06-18 |
Family
ID=46810092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210154088.3A Active CN102677572B (en) | 2012-05-17 | 2012-05-17 | Method for stirring renewable asphalt mixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102677572B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447627A (en) * | 2017-08-22 | 2017-12-08 | 四川知行路桥股份有限公司 | A kind of efficient proportioner of regeneration asphalt |
| CN108517740A (en) * | 2018-03-27 | 2018-09-11 | 福建南方路面机械有限公司 | A kind of asphalt-regenerating material aggregate regeneration device and method |
| CN109914195A (en) * | 2019-04-01 | 2019-06-21 | 福建南方路面机械有限公司 | A kind of heat mixes full reclaimed asphalt mixture production technology |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2756690Y (en) * | 2004-12-31 | 2006-02-08 | 杨林江 | Processing complete device for regenerated pitch concrete |
| CN2835329Y (en) * | 2005-11-21 | 2006-11-08 | 福建南方路面机械有限公司 | Combined asphalt concrete regeneration device |
| JP2007016495A (en) * | 2005-07-08 | 2007-01-25 | Kajima Road Co Ltd | Method of manufacturing recycled asphalt mixture |
| JP2008208606A (en) * | 2007-02-26 | 2008-09-11 | Nippo Corporation:Kk | Recycled aggregate manufacturing method and recycled porous asphalt mixture manufacturing method |
| CN201120260Y (en) * | 2007-10-26 | 2008-09-24 | 于文 | Continuous double-shaft mixer |
| CN201326145Y (en) * | 2008-11-26 | 2009-10-14 | 三一重工股份有限公司 | Low asphalt concrete plant-mix heat regenerating device |
| CN102260058A (en) * | 2011-05-25 | 2011-11-30 | 吉林省公路机械有限公司 | Production process of asphalt pavement material based on thermal regeneration of used asphalt pavement materials |
| CN202107967U (en) * | 2011-08-10 | 2012-01-11 | 廊坊德基机械科技股份有限公司 | Drying rotary drum provided with regeneration ring |
-
2012
- 2012-05-17 CN CN201210154088.3A patent/CN102677572B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2756690Y (en) * | 2004-12-31 | 2006-02-08 | 杨林江 | Processing complete device for regenerated pitch concrete |
| JP2007016495A (en) * | 2005-07-08 | 2007-01-25 | Kajima Road Co Ltd | Method of manufacturing recycled asphalt mixture |
| CN2835329Y (en) * | 2005-11-21 | 2006-11-08 | 福建南方路面机械有限公司 | Combined asphalt concrete regeneration device |
| JP2008208606A (en) * | 2007-02-26 | 2008-09-11 | Nippo Corporation:Kk | Recycled aggregate manufacturing method and recycled porous asphalt mixture manufacturing method |
| CN201120260Y (en) * | 2007-10-26 | 2008-09-24 | 于文 | Continuous double-shaft mixer |
| CN201326145Y (en) * | 2008-11-26 | 2009-10-14 | 三一重工股份有限公司 | Low asphalt concrete plant-mix heat regenerating device |
| CN102260058A (en) * | 2011-05-25 | 2011-11-30 | 吉林省公路机械有限公司 | Production process of asphalt pavement material based on thermal regeneration of used asphalt pavement materials |
| CN202107967U (en) * | 2011-08-10 | 2012-01-11 | 廊坊德基机械科技股份有限公司 | Drying rotary drum provided with regeneration ring |
Non-Patent Citations (4)
| Title |
|---|
| 吴鹏等: "沥青混合料再生技术生产工艺及应用", 《建设机械技术与管理》, no. 03, 31 March 2007 (2007-03-31) * |
| 拾方治: "旧沥青混合料厂拌再生加热技术分析", 《市政技术》, vol. 27, no. 4, 10 July 2007 (2007-07-10) * |
| 汪乔胜: "沥青混凝土厂拌热再生技术在G318殷大段的应用", 《工程与建设》, vol. 24, no. 3, 30 June 2010 (2010-06-30) * |
| 贾同谦: "间歇式拌和设备在沥青路面再生中的应用", 《公路交通技术》, no. 2, 25 November 2008 (2008-11-25) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447627A (en) * | 2017-08-22 | 2017-12-08 | 四川知行路桥股份有限公司 | A kind of efficient proportioner of regeneration asphalt |
| CN108517740A (en) * | 2018-03-27 | 2018-09-11 | 福建南方路面机械有限公司 | A kind of asphalt-regenerating material aggregate regeneration device and method |
| CN108517740B (en) * | 2018-03-27 | 2023-07-21 | 福建南方路面机械股份有限公司 | Asphalt recycling aggregate recycling equipment and method |
| CN109914195A (en) * | 2019-04-01 | 2019-06-21 | 福建南方路面机械有限公司 | A kind of heat mixes full reclaimed asphalt mixture production technology |
| CN109914195B (en) * | 2019-04-01 | 2021-04-06 | 福建南方路面机械股份有限公司 | Production process of hot-mix fully-regenerated asphalt mixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102677572B (en) | 2014-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102718438B (en) | Bridge floor seamless expansion joint material with large expansion amount and preparation method thereof | |
| CN106830727B (en) | A kind of bituminous mixture method for mixing CHARACTERISTICS OF TAILINGS SAND | |
| CN106906719A (en) | A kind of production technology of hot in-plant reclaimed asphalt paving mix | |
| CN102677572B (en) | Method for stirring renewable asphalt mixture | |
| CN102531471A (en) | Emulsified asphalt, mixed material containing same and road surface formed by mixed material | |
| CN201579013U (en) | Combined type intense stirring device | |
| CN105801011A (en) | Hot-recycling asphalt mixture containing non-traditional oil and preparation method of hot-recycling asphalt mixture | |
| CN108221557A (en) | A kind of the reworked material process units and its technique of large scale addition old asphalt mixture | |
| CN108947328A (en) | A kind of Steel slag permeable asphalt mixture based on the modified high-viscosity asphalt of shoddy | |
| CN204417968U (en) | A kind of ring regenerative drying roller device | |
| CN205917574U (en) | Old and useless pitch heating mixer , heating mixing system and regeneration system | |
| CN104480832B (en) | A kind of squash type bituminous paving milling material crushing and screening device | |
| CN108411738B (en) | Plant-mixed hot recycling method capable of realizing RAP full recycling | |
| CN202129041U (en) | Horizontal type stirrer for asphaltic mixture | |
| CN202610685U (en) | Continuous double-shaft agitating kettle | |
| CN106477974A (en) | A kind of glass fibre and water-base epoxy emulsified asphalt material for road repair | |
| CN102277821A (en) | Horizontal mixer for bituminous mixture | |
| CN104233917B (en) | The reuse method of waste asphalt mixture | |
| CN111021192A (en) | Crushing and screening device, screening method, regeneration device and regeneration method for old asphalt mixture | |
| CN202519566U (en) | Asphalt concrete mixing station | |
| CN106758647B (en) | A kind of method of asphalt pavement pit repairing | |
| CN109987882A (en) | A kind of RAP regenerates production method entirely | |
| CN206568329U (en) | A kind of concrete mixer | |
| CN102167616B (en) | Special artificial stone raw material formula and production process thereof | |
| CN102767131A (en) | Asphalt concrete mixing station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 065600 Langfang, Yongqing Industrial Park, cherry Road, No. 12, No. Patentee after: LANGFANG D&G MACHINERY TECHNOLOGY CO., LTD. Address before: 065600 Langfang, Yongqing Industrial Park, cherry Road, No. 12, No. Patentee before: Langfang D & G Machinery Technology Co., Ltd. |