CN109759225A - A kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure - Google Patents
A kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure Download PDFInfo
- Publication number
- CN109759225A CN109759225A CN201910137872.5A CN201910137872A CN109759225A CN 109759225 A CN109759225 A CN 109759225A CN 201910137872 A CN201910137872 A CN 201910137872A CN 109759225 A CN109759225 A CN 109759225A
- Authority
- CN
- China
- Prior art keywords
- mud
- vibrating screen
- hydrocyclone
- extends
- storage pool
- 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
- 238000004080 punching Methods 0.000 title claims abstract description 13
- 238000003860 storage Methods 0.000 claims abstract description 36
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 230000003750 conditioning effect Effects 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000012216 screening Methods 0.000 description 3
- 238000010410 dusting Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- -1 at high cost Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure, first vibrating screen and the second vibrating screen are set in turn in the top of mud storage pool from the bottom to top, one end of inlet pipe extends in live waste pulp pond, the other end extends at the charging of the first vibrating screen, mud external pump is provided on inlet pipe, the slag-drip opening of hydrocyclone extends at the charging of the second vibrating screen, the overflow pipe of hydrocyclone is connected with the upper end of storage tank in mud, the feed port of hydrocyclone is connected by mineral-feeding pipe road with the thick liquid discharge mouth that mud stores bottom of pond portion, host Pulp pump is set to mineral-feeding pipe road, the bottom of storage tank is provided with thick liquid discharge mouth and mud circulation pipe in mud, the outer end of mud circulation pipe extends in mud storage pool, filter device and internal pump are provided on mud circulation pipe.The problems such as to solve the easy sediment of discarded slurry during concrete pouring of punched hole piles, at high cost, mud conditioning low efficiency and be difficult to recycling and reusing.Belong to foundation of civil work technical field of construction.
Description
Technical field
The present invention relates to a kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structures, belong to foundation of civil work construction technology neck
Domain.
Background technique
Punching Borehole Cast-in-place Concrete Pile has ground adaptability strong, without squeezing soil or a small amount of soil compaction, noiseless, with small vibration, environment in construction
Influence small, the advantages that bearing capacity of single pile is high, it has also become the main pile-type of city core space skyscraper.Mud plays important guarantor
The effects of guard aperture wall, deslagging, borehole cleaning, but concrete pouring of punched hole piles process is also that generation mud is most, pollutes most serious
Process.Therefore, the processing of discarded slurry is always the problem of puzzlement Punching Borehole Cast-in-place Concrete Pile pile foundation engineering construction.
Less for the research of Punching Borehole Cast-in-place Concrete Pile mud conditioning at present, traditional dumping mud treatment mode is mainly through precipitating
Being transported to countryside by groove tank car after the precipitating of pond makes its weathering, and this mode not only takes up a large area, while reducing following for mud
Ring utilization efficiency, circulating mud dregginess is big, easily leads to collapse hole, bit freezing, influences construction safety production.
Summary of the invention
It is an object of the invention to: a kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure is provided, to solve punching filling
The easy sediment of discarded slurry, at high cost, mud conditioning low efficiency and the problems such as being difficult to recycling and reusing during note pile driving construction.
To solve the above problems, such a Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure of proposed adoption, including mud
Storage pool, the first vibrating screen, the second vibrating screen, inlet pipe, hydrocyclone, storage tank and host Pulp pump in mud, the first vibration
Dynamic sieve and the second vibrating screen are transversely arranged, and the first vibrating screen and the second vibrating screen are set in turn in mud from the bottom to top and deposit
The top of reservoir, the sieve pore of the second vibrating screen are greater than the sieve pore of the first vibrating screen, and one end of inlet pipe extends in live waste pulp pond,
The other end extends at the charging of the first vibrating screen, and the mud external pump for pumped slurry, hydraulic cyclone are provided on inlet pipe
The slag-drip opening of device extends at the charging of the second vibrating screen, and the overflow pipe of hydrocyclone is connected with the upper end of storage tank in mud,
The feed port of hydrocyclone is connected by mineral-feeding pipe road with the thick liquid discharge mouth that mud stores bottom of pond portion, and host Pulp pump is set to
On the road, storage tank is set to the top of mud storage pool to mineral-feeding pipe in mud, and the bottom of storage tank is provided with thick liquid discharge mouth and mud in mud
Circulation pipe is starched, and the outer end of mud circulation pipe extends in mud storage pool, and filter device and built-in is provided on mud circulation pipe
Pump.
In aforementioned structure, the mineral-feeding pipe road in host Pulp pump downstream is additionally provided with three-way valve, the both ends point of three-way valve
It is not connected with the mineral-feeding pipe road at valve both ends, the other end of three-way valve is connected with overfall pipeline, and overfall pipeline is another
End extends in mud storage pool, and return pipe road is additionally provided with recoil control valve.
Compared with prior art, advantage of the present invention is as follows:
1, solid in mud dregs by sieve mesh number screening out of dividing that vibrocribble and vibrating fine screen can be more fine
The partial size of body particle improves the separative efficiency of vibrating screen, reduces energy loss.
2, due to the complexity of construction field geology condition, there are mud property is not achieved when clay content in boring mud is higher to want
The case where asking, so can satisfy different geology using hydrocyclone centrifugal treating by vibrating screen treated mud
Under the conditions of mud conditioning requirement.Simultaneously in general use process, vibrating screen can be only opened, the slurries after sieving are through mud
Circulation pipe is filtered and is pumped into mud in storage tank, is then discharged, without using hydrocyclone, as mud density Gao Shizai
Hydrocyclone is opened, actual use power is reduced, most reasonably saves money, it is more economically viable.
3, being used in combination by mud circulation pipe and three-way valve, entire mud conditioning device loop optimization avoids
Mud, which is pumped not in time, to be there is pipeline plugging, splits pipe phenomenon.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with attached drawing
The detailed description of step.
Embodiment:
Referring to attached drawing 1, the present embodiment provides a kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structures, including mud to store
Pond 2, the first vibrating screen 3, the second vibrating screen 4, inlet pipe 5, hydrocyclone 6, storage tank 7 and host Pulp pump 8 in mud, first
Vibrating screen 3 and the second vibrating screen 4 are transversely arranged, and the first vibrating screen 3 and the second vibrating screen 4 are set in turn in from the bottom to top
The top of mud storage pool 2, the sieve pore of the second vibrating screen 4 are greater than the sieve pore of the first vibrating screen 3, and one end of inlet pipe 5 extends to existing
In the waste pulp pond of field, the other end is extended at the charging of the first vibrating screen 3, is provided with outside the mud for pumped slurry on inlet pipe 5
Pump 1 is set, the slag-drip opening of hydrocyclone 6 extends at the charging of the second vibrating screen 4, in the overflow pipe and mud of hydrocyclone 6
The upper end of storage tank 7 is connected, and the feed port of hydrocyclone 6 passes through the thick liquid discharge mouth on mineral-feeding pipe road 12 and 2 bottom of mud storage pool
It is connected, and host Pulp pump 8 is set on mineral-feeding pipe road 12, storage tank 7 is set to the top of mud storage pool 2, mud in mud
The bottom of middle storage tank 7 is provided with thick liquid discharge mouth 14 and mud circulation pipe 15, and the outer end of mud circulation pipe 15 extends to mud storage pool 2
It is interior, it is provided with filter device 10 and internal pump on mud circulation pipe 15, is additionally provided on the mineral-feeding pipe road 12 in 8 downstream of host Pulp pump
Three-way valve 11, the both ends of three-way valve 11 are connected with the mineral-feeding pipe road 12 at valve both ends respectively, three-way valve 11 it is another
End is connected with overfall pipeline 13, and the other end of overfall pipeline 13 extends in mud storage pool 2, is additionally provided on overfall pipeline 13
Recoil control valve 9.
Its construction method is as follows:
It is sieved firstly, the mud in live waste pulp pond is pumped to double-deck screen shale shaker coke screenings by mud external pump 1,
The particulate matter greater than 2mm will be discharged after screening, and the particulate matter less than 2mm left will flow into mud storage pool 2
It is interior.
Then, host Pulp pump 8 can be revolved the mud pumping in mud storage pool 2 into hydrocyclone 6 by waterpower
Mud after flow separation will will do it detection up to standard, and slurries up to standard after testing will be flowed into from the overflow port of hydrocyclone
In mud in storage tank 7, and it is discharged by the thick liquid discharge mouth 14 of storage tank 7 in mud.
The mud waste residue isolated is discharged hydrocyclone 6 by bottom pipe, and enters double-deck screen shale shaker dusting cover layer,
Since dusting cover sieve mesh number is relatively more, can be now discharged to the dehydration of waste residue and finally by sieve jolt ramming.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, it will be apparent to an ordinarily skilled person in the art that: still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
Claims (2)
1. a kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure, it is characterised in that: including mud storage pool (2), the first vibration
Dynamic sieve (3), the second vibrating screen (4), inlet pipe (5), hydrocyclone (6), storage tank (7) and host Pulp pump (8) in mud, the
One vibrating screen (3) and the second vibrating screen (4) are transversely arranged, and the first vibrating screen (3) and the second vibrating screen (4) are from the bottom to top
It is set in turn in the top of mud storage pool (2), the sieve pore of the second vibrating screen (4) is greater than the sieve pore of the first vibrating screen (3), into slurry
One end of pipe (5) extends in live waste pulp pond, and the other end extends at the charging of the first vibrating screen (3), and inlet pipe is provided on (5)
For the mud external pump (1) of pumped slurry, the slag-drip opening of hydrocyclone (6) is extended at the charging of the second vibrating screen (4), water
The overflow pipe of power cyclone (6) is connected with the upper end of storage tank in mud (7), and the feed port of hydrocyclone (6) is by giving mine
Pipeline (12) is connected with the thick liquid discharge mouth of mud storage pool (2) bottom, and host Pulp pump (8) is set on mineral-feeding pipe road (12),
Storage tank (7) is set to the top of mud storage pool (2) in mud, in mud the bottom of storage tank (7) be provided with thick liquid discharge mouth (14) and
Mud circulation pipe (15), and the outer end of mud circulation pipe (15) extends in mud storage pool (2), mud circulation pipe is arranged on (15)
There are filter device (10) and internal pump.
2. a kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure according to claim 1, it is characterised in that: host slurry
Pump (8) downstream mineral-feeding pipe road (12) on be additionally provided with three-way valve (11), the both ends of three-way valve (11) respectively with valve both ends
Mineral-feeding pipe road (12) be connected, the other end of three-way valve (11) is connected with overfall pipeline (13), and overfall pipeline (13)
The other end extends in mud storage pool (2), and recoil control valve (9) is additionally provided on overfall pipeline (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137872.5A CN109759225B (en) | 2019-02-25 | 2019-02-25 | Construction structure is handled in bored concrete pile mud circulation that punches a hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137872.5A CN109759225B (en) | 2019-02-25 | 2019-02-25 | Construction structure is handled in bored concrete pile mud circulation that punches a hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109759225A true CN109759225A (en) | 2019-05-17 |
| CN109759225B CN109759225B (en) | 2024-05-14 |
Family
ID=66457227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910137872.5A Active CN109759225B (en) | 2019-02-25 | 2019-02-25 | Construction structure is handled in bored concrete pile mud circulation that punches a hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109759225B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318697A (en) * | 2019-05-20 | 2019-10-11 | 国家电网有限公司 | A kind of packaged type pile foundation drilling mud processing unit |
| CN110393974A (en) * | 2019-08-08 | 2019-11-01 | 亨通海洋工程有限公司 | A kind of new-type mortar processing unit |
| CN110685278A (en) * | 2019-10-22 | 2020-01-14 | 徐州汉晨机械制造有限公司 | Slurry treatment equipment for severe cold environment |
| CN111520091A (en) * | 2020-05-07 | 2020-08-11 | 深圳市地铁集团有限公司 | Mud separator for air well drilling bored concrete pile |
| CN114526024A (en) * | 2022-02-21 | 2022-05-24 | 濮阳市中原锐实达石油设备有限公司 | Screen cloth leaks sand monitoring devices |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA288423A (en) * | 1929-04-02 | J. Trimbey Edward | Paper pulp screen | |
| US4274966A (en) * | 1977-09-02 | 1981-06-23 | Palmer Willy F | Method and device for purifying sewage |
| EP0138363A2 (en) * | 1983-10-14 | 1985-04-24 | SCHELLSTEDE, Herman Joseph | Single pass mud rejuvenation apparatus and method |
| CN2483502Y (en) * | 2001-06-01 | 2002-03-27 | 宜昌黑旋风工程机械有限公司 | Mud purification apparatus |
| US20030197079A1 (en) * | 2002-03-12 | 2003-10-23 | Watters Larry A. | Integrally formed heavy media pulping column |
| CN201208531Y (en) * | 2008-03-05 | 2009-03-18 | 李彦光 | Mud desander |
| CN101767960A (en) * | 2008-12-29 | 2010-07-07 | 沈阳建筑大学 | Recycled concrete coarse aggregate modified processing method |
| CN101792225A (en) * | 2010-02-05 | 2010-08-04 | 戴言忠 | High-efficiency purification system of papermaking sewage |
| CN202246372U (en) * | 2011-09-20 | 2012-05-30 | 中国建筑股份有限公司 | Circulative purifying and dewatering system for engineering slurry |
| CN203525901U (en) * | 2013-11-02 | 2014-04-09 | 中铁十二局集团第二工程有限公司 | Slurry treatment device for slurry shield construction |
| CN105836988A (en) * | 2016-05-27 | 2016-08-10 | 中亿丰建设集团股份有限公司 | Slurry reduction treatment system |
| CN106193027A (en) * | 2016-08-31 | 2016-12-07 | 中建四局第建筑工程有限公司 | A kind of pile for prestressed pipe pile defect restorative procedure and device |
| CN205876244U (en) * | 2016-08-18 | 2017-01-11 | 中建三局基础设施工程有限公司 | Self -control mud circulating device |
| CN106891440A (en) * | 2017-02-17 | 2017-06-27 | 建基建设集团有限公司 | A kind of economic and practical complete processing equipment of type cast-in-situ bored pile mud and processing method |
| JP2017138178A (en) * | 2016-02-03 | 2017-08-10 | 太平洋セメント株式会社 | Method for estimating unit quantity of water of concrete or mortar |
| CN109020152A (en) * | 2018-09-26 | 2018-12-18 | 天津市水利科学研究院 | A kind of movable type slurry dewatering solidifying system |
| CN209613230U (en) * | 2019-02-25 | 2019-11-12 | 中建四局第一建筑工程有限公司 | A kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure |
-
2019
- 2019-02-25 CN CN201910137872.5A patent/CN109759225B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA288423A (en) * | 1929-04-02 | J. Trimbey Edward | Paper pulp screen | |
| US4274966A (en) * | 1977-09-02 | 1981-06-23 | Palmer Willy F | Method and device for purifying sewage |
| EP0138363A2 (en) * | 1983-10-14 | 1985-04-24 | SCHELLSTEDE, Herman Joseph | Single pass mud rejuvenation apparatus and method |
| CN2483502Y (en) * | 2001-06-01 | 2002-03-27 | 宜昌黑旋风工程机械有限公司 | Mud purification apparatus |
| US20030197079A1 (en) * | 2002-03-12 | 2003-10-23 | Watters Larry A. | Integrally formed heavy media pulping column |
| CN201208531Y (en) * | 2008-03-05 | 2009-03-18 | 李彦光 | Mud desander |
| CN101767960A (en) * | 2008-12-29 | 2010-07-07 | 沈阳建筑大学 | Recycled concrete coarse aggregate modified processing method |
| CN101792225A (en) * | 2010-02-05 | 2010-08-04 | 戴言忠 | High-efficiency purification system of papermaking sewage |
| CN202246372U (en) * | 2011-09-20 | 2012-05-30 | 中国建筑股份有限公司 | Circulative purifying and dewatering system for engineering slurry |
| CN203525901U (en) * | 2013-11-02 | 2014-04-09 | 中铁十二局集团第二工程有限公司 | Slurry treatment device for slurry shield construction |
| JP2017138178A (en) * | 2016-02-03 | 2017-08-10 | 太平洋セメント株式会社 | Method for estimating unit quantity of water of concrete or mortar |
| CN105836988A (en) * | 2016-05-27 | 2016-08-10 | 中亿丰建设集团股份有限公司 | Slurry reduction treatment system |
| CN205876244U (en) * | 2016-08-18 | 2017-01-11 | 中建三局基础设施工程有限公司 | Self -control mud circulating device |
| CN106193027A (en) * | 2016-08-31 | 2016-12-07 | 中建四局第建筑工程有限公司 | A kind of pile for prestressed pipe pile defect restorative procedure and device |
| CN106891440A (en) * | 2017-02-17 | 2017-06-27 | 建基建设集团有限公司 | A kind of economic and practical complete processing equipment of type cast-in-situ bored pile mud and processing method |
| CN109020152A (en) * | 2018-09-26 | 2018-12-18 | 天津市水利科学研究院 | A kind of movable type slurry dewatering solidifying system |
| CN209613230U (en) * | 2019-02-25 | 2019-11-12 | 中建四局第一建筑工程有限公司 | A kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318697A (en) * | 2019-05-20 | 2019-10-11 | 国家电网有限公司 | A kind of packaged type pile foundation drilling mud processing unit |
| CN110393974A (en) * | 2019-08-08 | 2019-11-01 | 亨通海洋工程有限公司 | A kind of new-type mortar processing unit |
| CN110685278A (en) * | 2019-10-22 | 2020-01-14 | 徐州汉晨机械制造有限公司 | Slurry treatment equipment for severe cold environment |
| CN111520091A (en) * | 2020-05-07 | 2020-08-11 | 深圳市地铁集团有限公司 | Mud separator for air well drilling bored concrete pile |
| CN114526024A (en) * | 2022-02-21 | 2022-05-24 | 濮阳市中原锐实达石油设备有限公司 | Screen cloth leaks sand monitoring devices |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109759225B (en) | 2024-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109759225A (en) | A kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure | |
| CN201208531Y (en) | Mud desander | |
| CN203525901U (en) | Slurry treatment device for slurry shield construction | |
| CN104724893A (en) | Dredging and classified dewatering treatment method and system for sludge in urban river box culvert | |
| CN209613230U (en) | A kind of Punching Borehole Cast-in-place Concrete Pile mud circular treatment constructing structure | |
| CN210305011U (en) | Shield constructs construction dregs processing system | |
| CN208943644U (en) | Mud and water separating equipment for mud caused by shield machine digging operation | |
| CN111072255A (en) | Mud separation system | |
| CN108654205A (en) | Mud and water separating equipment and method for mud caused by shield machine digging operation | |
| CN112007936A (en) | Muck resourceful treatment system | |
| CN106830609A (en) | Urban pipe network sludge reduction processing unit and processing method | |
| CN105776807B (en) | Removable construction slurry scene rapid dewatering system and method | |
| CN105836988A (en) | Slurry reduction treatment system | |
| CN207634049U (en) | A kind of rejected well drilling liquid harmless treatment device | |
| CN212054564U (en) | Drilling mud circulation system | |
| CN106799299B (en) | A kind of device and method controlling dense-medium separation suspension | |
| CN203145870U (en) | Energy-saving solid control system | |
| CN206188617U (en) | Mud mummification system | |
| CN104675349A (en) | Sand screening and punching construction method of churn drill | |
| CN211133259U (en) | Engineering mud in-situ treatment device | |
| CN209081703U (en) | A kind of mud drying and other treatment vehicle | |
| CN209383645U (en) | Waste pulp thickener | |
| CN209378609U (en) | A kind of dry discharge cycle system of slurry environmental protection | |
| CN206428140U (en) | Urban pipe network sludge reduction processing unit | |
| CN205528468U (en) | Sea sand desalination device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 510030 room 904, 6th floor, traffic bureau building, 95 Yingbin Avenue, Xinhua Street, Huadu District, Guangzhou City, Guangdong Province Applicant after: China Construction Fourth Engineering Bureau First Construction Co.,Ltd. Address before: 510030 room 904, 6th floor, traffic bureau building, 95 Yingbin Avenue, Xinhua Street, Huadu District, Guangzhou City, Guangdong Province Applicant before: China Construction Fourth Engineering Bureau First Construction Engineering Co.,Ltd. Country or region before: China |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |