CN109179633A - Underwater propeller installation method - Google Patents
Underwater propeller installation method Download PDFInfo
- Publication number
- CN109179633A CN109179633A CN201811041773.9A CN201811041773A CN109179633A CN 109179633 A CN109179633 A CN 109179633A CN 201811041773 A CN201811041773 A CN 201811041773A CN 109179633 A CN109179633 A CN 109179633A
- Authority
- CN
- China
- Prior art keywords
- underwater propeller
- steel pipe
- fixed
- biochemistry pool
- propeller
- 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
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses underwater propeller installation methods, it solves when the prior art installs underwater propeller in biochemistry pool to need that first biochemistry pool stops production, drains, removes contamination, it is not only time-consuming and laborious, there are security risks, while the problem of can also bring economic loss to sewage treatment plant.Underwater propeller is installed in the case where biochemistry pool does not stop production to biochemistry pool by the fixed bracket of special wellhole type.Present invention short construction period compared with the existing technology, the fixed bracket of wellhole type can lift rapidly after completing and complete installation in place, biochemistry pool can construct without the draining blowdown that stops production, influence to sewage treatment plant is reduced to minimum, construction safety, while meeting installation quality requirement, it can ensure the safety of construction personnel to greatest extent.
Description
Technical field
The present invention relates to underwater propeller installation methods.
Background technique
Need to install underwater propeller in the biochemical sewage pond of sewage treatment plant, the prior art is in installation underwater propeller
When, it generally requires and biochemical sewage pond is stopped production to comprehensively and drained blowdown, send operation after cleaning out in pond, having the condition of applying
Personnel, which enter in pond, carries out sliding rail fixed installation work.
When installing underwater propeller, have the disadvantage in that
1, bad environments, airtight space, air quality is very poor, there is asphyxia risk.
2, pond inner height is higher, there is the risk of high falling.
3, moist in pond, it carries out the risk that livewire work has electric shock such as welding.
And there is also later maintenance to maintain inconvenient disadvantage after mounting.
Meanwhile biochemical sewage pond needs to stop production comprehensively, co-ordination and halt production preparation can expend more time, construct
Before need to drain, remove contamination, expend more time, stop work and safety prevention measure preparation is more, expend more time, amounting to needs
To be up to 15 day time.
Biochemical sewage pond stops production can cause economic loss to sewage treatment plant, biochemical sewage pond stop production after draining, remove contamination
It is also required to labor intensive.
Therefore, a kind of underwater propeller installation method is designed, underwater propeller is enable to install online to biochemistry pool, at
For skilled artisan's technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved by the present invention is providing underwater propeller installation method, the prior art is solved in biochemistry pool
It needs that first biochemistry pool stops production, drains, removes contamination when interior installation underwater propeller, it is not only time-consuming and laborious, there are security risks, simultaneously
The problem of also economic loss being brought to sewage treatment plant.
To achieve the above object, The technical solution adopted by the invention is as follows:
Underwater propeller installation method does not stop production underwater propeller by the fixed bracket of special wellhole type in biochemistry pool
In the case where installation in biochemistry pool.
Specifically, the fixed bracket of the wellhole type includes being vertically arranged in biochemistry pool and in wellhole type and in well
The fixation rack body of underwater propeller is lifted in road, the fixed rack body includes the main steel of four vertical parallelly distribute ons
Pipe, four level above be welded between four main steel pipes for be connected and fixed the main steel pipe joint steel pipe and
Several root beads are connected to the hound between four main steel pipes for reinforcing being connected and fixed the main steel pipe；Four main steel
Pipe is distributed in the hoistway quadrangle of fixed rack body, and every four joint steel pipes are one group, and same group of joint steel pipe is located at same
On one horizontal plane, and level is welded between the adjacent main steel pipe same group of four joint steel pipes respectively；Every two
Hound described in root is one group, and on same vertical plane, two adjacent groups connect the hound cross-distribution of two of same group
One group of hound is distributed between two joint steel pipes being located on same vertical plane in steel pipe；The fixed rack body
Upper end fixed by expansion bolt and biochemistry pool top structure, be equipped in the lumen of each main steel pipe one it is fixed
Position pipe, the bottom end of each positioning pipe are welded with the violent steel column centrum of a height, and the bottom end of the fixed rack body is logical
It crosses the concrete layer that the high violent steel column centrum is inserted into biochemical bottom of pond portion and is fixed on biochemical bottom of pond portion, the fixed rack body
The propeller track for lifting underwater propeller is fixed on inner sidewall.
It has been used to reinforce connection function specifically, the welding position of the joint steel pipe and the main steel pipe is welded with
Stiffener plate.
Specifically, the stiffener plate is the stainless steel plate with a thickness of 10mm.
Specifically, the main steel pipe, the joint steel pipe and the hound are the stainless steel tube of DN100.
Specifically, the positioning pipe is the stainless steel tube of DN80.
Specifically, the high violent steel column centrum includes being welded in the D75 cylinder of positioning pipe bottom end and positioned at the column
Body bottom end is simultaneously an integral structure with the cylinderCentrum.
Specifically, comprising the following steps:
The fixed bracket of wellhole type is welded on the ground as requested, while propeller track being welded by step 1, frame processed
It is connected on the inner sidewall of fixed rack body；
Step 2, lower pond are lifted the fixed bracket of the wellhole type for being welded with propeller track to biochemistry pool by crane,
The fixed bracket of wellhole type is stood in biochemistry pool vertically；
Step 3 determines frame, and the fixed bracket of wellhole type is lifted to designated position in biochemistry pool, will using M16 expansion bolt
The top structure of the support bracket fastened upper end of wellhole type and biochemistry pool is fixed, and hammers positioning pipe straight down using weight later
Top, so that high violent steel column centrum is slowly hammered into the concrete layer of biochemical bottom of pond portion under hammer force straight down；
Step 4, installation, are lifted underwater propeller to propeller track using hanging device, and pass through hanging device
Underwater propeller is set to be sent into designated position in biochemistry pool along propeller track.
Further, in the step 3, the high violent steel column centrum hammers into the depth of the concrete layer of biochemical bottom of pond portion
At least 60mm.
Further, in the step 3, after high violent steel column centrum hammers into the concrete layer of biochemical bottom of pond portion in place, also
Need to be filled out and be encapsulated between positioning pipe outer wall and main steel pipe inner wall using the welding of ring stainless steel plate, with ensure positioning pipe and main steel pipe it
Between be reliably connected.
Compared with prior art, the invention has the following advantages:
The prior art installs underwater propeller, and draining meter day is artificial: 4 people, removing contamination, it is artificial to count day: 10 people, installation propeller
And bracket meter day is artificial: 8 people need be installed for 15 days altogether, and biochemistry pool need to stop production 15 days.And the present invention is in installation underwater propeller
When include frame processed, Xia Chi, determine frame and installation, totally four steps, wherein frame meter day processed is artificial: 4 people, Xia Chi, determine frame and installs to count
Day artificial: 5 people need complete for 3 days altogether, and biochemistry pool is without stopping production, therefore, present invention short construction period compared with the existing technology, well
The fixed bracket of channel type can lift rapidly after completing and complete installation in place, and biochemistry pool can be applied without the draining blowdown that stops production
Work, the influence to sewage treatment plant are reduced to minimum, construction safety, can maximum limit while meeting installation quality requirement
The safety for ensuring construction personnel of degree.
Wellhole type fixing rack structure of the present invention is simple, design is scientific and reasonable, and easy to use, cost of manufacture is cheap, production
Time is short, can effectively improve underwater propeller lifting efficiency, can carry out underwater propeller lifting online, biochemical sewage pond is without stopping
It produces, drain, remove contamination, while security risk of the existing technology can be effectively eliminated.
The propeller track for being used to lift underwater propeller is fixed on fixed bracket master by the fixed bracket of wellhole type of the present invention
On the inner wall of body, in use, lifting propeller track together with fixed rack body to biochemical sewage pond, position is ajusted
Afterwards, high violent steel column centrum is thumped by the concrete layer into biochemical sewage bottom of pond by external force, the bottom of rack body will be fixed
It is fixed on biochemical sewage bottom of pond, the top of fixed rack body is tied by the top that M16 expansion bolt is fixed on biochemical sewage pond
Structure lifts underwater propeller to biochemical sewage pond finally by propeller track, fixed rack body and propeller track
Assembling all complete on the ground, assemble, lift it is high-efficient, underwater propeller lifting it is high-efficient, water can be completed within general 3 days
The lifting of lower propeller can also be effectively eliminated into security risk present in operation in biochemical sewage pond, meanwhile, after also facilitating
Phase maintenance.
The support bracket fastened fixed rack body of wellhole type of the present invention include main steel pipe, joint steel pipe, positioning pipe, hound and
The structure of stiffener plate, entire fixed rack body is quite firm, and main steel pipe, joint steel pipe, hound are all made of DN100 not
Become rusty steel pipe, positioning pipe be DN80 stainless steel tube, stiffener plate be with a thickness of 10mm stainless steel plate, stainless steel it is corrosion-resistant
Performance is good, can effectively extend the service life of fixed rack body and reduce later maintenance cost.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is usage state diagram of the present invention.
Fig. 3 is main steel pipe lower part of the invention sectional view.
Wherein, the corresponding title of appended drawing reference are as follows:
1- fix rack body, the main steel pipe of 2-, 3- joint steel pipe, 4- hound, 5- positioning pipe, 6- high suddenly steel column centrum,
7- propeller track, 8- stiffener plate, 9- underwater propeller.
Specific embodiment
The invention will be further described with embodiment for explanation with reference to the accompanying drawing, and mode of the invention includes but not only limits
In following embodiment.
As shown in Figure 1-3, underwater propeller installation method provided by the invention, passes through special hoistway for underwater propeller
The fixed bracket of type is installed in the case where biochemistry pool does not stop production to biochemistry pool.Specifically includes the following steps:
The fixed bracket of wellhole type is welded on the ground as requested, while propeller track being welded by step 1, frame processed
It is connected on the inner sidewall of fixed rack body；
Step 2, lower pond are lifted the fixed bracket of the wellhole type for being welded with propeller track to biochemistry pool by crane,
The fixed bracket of wellhole type is stood in biochemistry pool vertically；
Step 3 determines frame, and the fixed bracket of wellhole type is lifted to designated position in biochemistry pool, will using M16 expansion bolt
The top structure of the support bracket fastened upper end of wellhole type and biochemistry pool is fixed, and hammers positioning pipe straight down using weight later
Top, so that high violent steel column centrum is slowly hammered into the concrete layer of biochemical bottom of pond portion under hammer force straight down；The height
The depth for the concrete layer that violent steel column centrum hammers into biochemical bottom of pond portion is at least 60mm, and high violent steel column centrum hammers into biochemical bottom of pond portion
Concrete layer in place after, also need using ring stainless steel plate welding fill out be encapsulated in positioning pipe outer wall and main steel pipe inner wall between, with
Ensure to be reliably connected between positioning pipe and main steel pipe；
Step 4, installation, are lifted underwater propeller to propeller track using hanging device, and pass through hanging device
Underwater propeller is set to be sent into designated position in biochemistry pool along propeller track.
The prior art installs underwater propeller, and draining meter day is artificial: 4 people, removing contamination, it is artificial to count day: 10 people, installation propeller
And bracket meter day is artificial: 8 people need be installed for 15 days altogether, and biochemistry pool need to stop production 15 days.And the present invention is in installation underwater propeller
When include frame processed, Xia Chi, determine frame and installation, totally four steps, wherein frame meter day processed is artificial: 4 people, Xia Chi, determine frame and installs to count
Day artificial: 5 people need complete for 3 days altogether, and biochemistry pool is without stopping production, therefore, present invention short construction period compared with the existing technology, well
The fixed bracket of channel type can lift rapidly after completing and complete installation in place, and biochemistry pool can be applied without the draining blowdown that stops production
Work, the influence to sewage treatment plant are reduced to minimum, construction safety, can maximum limit while meeting installation quality requirement
The safety for ensuring construction personnel of degree.
Wherein, the fixed bracket of the wellhole type includes being vertically arranged in biochemistry pool and in wellhole type and in hoistway
The fixation rack body 1 of underwater propeller 9 is lifted, the fixed rack body 1 includes the main steel pipe of four vertical parallelly distribute ons
2, four level above be welded between four main steel pipes 2 for be connected and fixed the main steel pipe 2 joint steel pipe 3, with
And several root beads are connected to the hound 4 between four main steel pipes 2 for reinforcing being connected and fixed the main steel pipe 2.
Four main steel pipes 2 are distributed in the hoistway quadrangle of fixed rack body 1, and every four joint steel pipes 3 are one
Group, same group of joint steel pipe are located in same level, and level is welded in same group of four joint steel pipes 3 respectively
Between the adjacent main steel pipe 2；Every two hounds 4 be one group, 4 cross-distribution of hound of two of same group in
On same vertical plane, it is distributed between two joint steel pipes 3 in two adjacent groups joint steel pipe on same vertical plane
One group of hound；The upper end of the fixed rack body 1 is fixed by expansion bolt and biochemistry pool top structure, described in each
A positioning pipe 5 is equipped in the lumen of main steel pipe 2, the bottom end of each positioning pipe 5 is welded with the violent steel of height
Column centrum 6, the high violent steel column centrum 6 includes being welded in the D75 cylinder of 5 bottom end of positioning pipe and positioned at the cylinder bottom end
And be an integral structure with the cylinderThe bottom end of centrum, the fixed rack body 1 passes through the high violent steel column centrum 6
The concrete layer for being inserted into biochemical bottom of pond portion is fixed on biochemical bottom of pond portion, directly thumps positioning pipe 5 with external force at the top of biochemistry pool, makes
High violent steel column centrum 6 heads into bottom of pond concrete 60mm, and positioning pipe top is higher by the main about 100mm of steel pipe 2, and top end socket is convenient for beating
It hits, after positioning pipe knocking in place, positioning pipe outer wall is filled out with the gap between the inner wall of main steel pipe 2 using the welding of ring stainless steel plate
Envelope, it is ensured that positioning pipe is reliably connected with main steel pipe, is fixed on the inner sidewall of the fixed rack body 1 and is pushed away under water for lifting
Into the propeller track 7 of device.
Present invention fixation rack body includes main steel pipe, joint steel pipe, positioning pipe, hound and stiffener plate, is entirely consolidated
The structure of fixed rack main body is quite firm, and main steel pipe, joint steel pipe, hound are all made of the stainless steel tube of DN100, and positioning pipe is
The stainless steel tube of DN80, stiffener plate are the stainless steel plate with a thickness of 10mm, and the corrosion resistance and good of stainless steel can effectively prolong
The service life and reduction later maintenance cost of long fixed rack body.
In order to keep fixation rack body of the invention more firm, the weld part of the joint steel pipe 3 and the main steel pipe 2
Position is welded with for acting the stiffener plate 8 for reinforcing connection function, and the stiffener plate 8 is the stainless steel plate with a thickness of 10mm.
In order to enhance the corrosion resistance of the fixed rack body of the present invention, to prolong its service life, the main steel pipe 2,
The joint steel pipe 3 and the hound 4 are the stainless steel tube of DN100, and the positioning pipe 5 is the stainless steel tube of DN80.
The propeller track for being used to lift underwater propeller is fixed on the inner wall of fixed rack body by the present invention, is used
When, propeller track is lifted together with fixed rack body to biochemical biochemistry pool, it, will be high by external force after position is ajusted
Violent steel column centrum thumps the concrete layer into biochemical biochemistry pool bottom, and biochemical biochemistry pool is fixed in the bottom for fixing rack body
The top structure of biochemical biochemistry pool is fixed on the top at bottom, fixed rack body by M16 expansion bolt, finally by propeller
Track lifts underwater propeller to biochemical biochemistry pool, and the assembling of fixed rack body and propeller track is whole on the ground
It completes, assembles, lifts high-efficient, high-efficient, the general lifting that underwater propeller can be completed for 3 days of underwater propeller lifting, also
It can effectively eliminate into security risk present in operation in biochemical biochemistry pool, meanwhile, also facilitate later maintenance.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit protection model of the invention
It encloses, as long as that in body design thought of the invention and mentally makes has no the change of essential meaning or polishing, is solved
The technical issues of it is still consistent with the present invention, should all be included within protection scope of the present invention.
Claims (10)
1. underwater propeller installation method, which is characterized in that by underwater propeller by the fixed bracket of special wellhole type in life
Change in the case that pond does not stop production in installation to biochemistry pool.
2. underwater propeller installation method according to claim 1, which is characterized in that the wellhole type fixes bracket and includes
It is vertically arranged to the fixation rack body (1) in biochemistry pool and in wellhole type and for lifting underwater propeller in hoistway, institute
Stating fixed rack body (1) includes that the main steel pipe (2) of four vertical parallelly distribute ons, four level above are welded in four masters
Joint steel pipe (3) and several root beads between steel pipe (2) for being connected and fixed the main steel pipe (2) are connected to four masters
Hound (4) between steel pipe (2) for reinforcing being connected and fixed the main steel pipe (2)；Four main steel pipes (2) are distributed in solid
The hoistway quadrangle of fixed rack main body (1), every four joint steel pipes (3) are one group, and same group of joint steel pipe is located at same water
In plane, and level is welded between the adjacent main steel pipe (2) same group of four joint steel pipes (3) respectively；Often
Two hounds (4) are one group, and hound (4) cross-distribution of two of same group is adjacent on same vertical plane
One group of hound is distributed between two joint steel pipes (3) being located on same vertical plane in two groups of joint steel pipes；It is described
The upper end of fixed rack body (1) is fixed by expansion bolt and biochemistry pool top structure, the pipe of each main steel pipe (2)
Intracavitary to be equipped with a positioning pipe (5), the bottom end of each positioning pipe (5) is welded with the violent steel column centrum of a height
(6), the bottom end of the fixed rack body (1) is inserted into the concrete layer of biochemical bottom of pond portion by the high violent steel column centrum (6)
It is fixed on biochemical bottom of pond portion, the propulsion for lifting underwater propeller is fixed on the inner sidewall of the fixed rack body (1)
Device track (7).
3. underwater propeller installation method according to claim 2, which is characterized in that the joint steel pipe (3) with it is described
The welding position of main steel pipe (2) is welded with for acting the stiffener plate (8) for reinforcing connection function.
4. underwater propeller installation method according to claim 3, which is characterized in that the stiffener plate (8) is thickness
For the stainless steel plate of 10mm.
5. underwater propeller installation method according to claim 4, which is characterized in that the main steel pipe (2), the connection
Steel pipe (3) and the hound (4) are the stainless steel tube of DN100.
6. underwater propeller installation method according to claim 5, which is characterized in that the positioning pipe (5) is DN80's
Stainless steel tube.
7. underwater propeller installation method according to claim 6, which is characterized in that high violent steel column centrum (6) packet
It includes the D75 cylinder for being welded in positioning pipe (5) bottom end and is an integral structure positioned at the cylinder bottom end and with the cylinderCentrum.
8. underwater propeller installation method according to claim 7, which comprises the following steps:
The fixed bracket of wellhole type is welded on the ground as requested for step 1, frame processed, while extremely by propeller track welding
On the inner sidewall of fixed rack body；
Step 2, lower pond are lifted the fixed bracket of the wellhole type for being welded with propeller track to biochemistry pool by crane, hoistway
The fixed bracket of type is stood in biochemistry pool vertically；
Step 3 determines frame, and the fixed bracket of wellhole type is lifted to designated position in biochemistry pool, using M16 expansion bolt by hoistway
The top structure of the support bracket fastened upper end of type and biochemistry pool is fixed, and hammers the top of positioning pipe straight down using weight later
End makes high violent steel column centrum slowly hammer into the concrete layer of biochemical bottom of pond portion under hammer force straight down；
Step 4, installation, are lifted underwater propeller to propeller track using hanging device, and make water by hanging device
Lower propeller is sent into designated position in biochemistry pool along propeller track.
9. underwater propeller installation method according to claim 8, which is characterized in that in the step 3, the Gao Meng
The depth that steel column centrum hammers into the concrete layer of biochemical bottom of pond portion is at least 60mm.
10. underwater propeller installation method according to claim 9, which is characterized in that in the step 3, Gao Menggang
After column centrum hammers into the concrete layer of biochemical bottom of pond portion in place, also needs to fill out using the welding of ring stainless steel plate and be encapsulated in positioning pipe outer wall
Between main steel pipe inner wall, to ensure to be reliably connected between positioning pipe and main steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041773.9A CN109179633A (en) | 2018-09-07 | 2018-09-07 | Underwater propeller installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811041773.9A CN109179633A (en) | 2018-09-07 | 2018-09-07 | Underwater propeller installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109179633A true CN109179633A (en) | 2019-01-11 |
Family
ID=64915241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811041773.9A Pending CN109179633A (en) | 2018-09-07 | 2018-09-07 | Underwater propeller installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109179633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002606A (en) * | 2019-04-15 | 2019-07-12 | 石家庄顺时科技有限公司 | A kind of sewage treatment segmentation bracket and its mention drop assembly and disassembly methods |
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| WO2000051884A1 (en) * | 1999-03-03 | 2000-09-08 | Global Marine Inc. | High retraction marine thruster |
| CN203628196U (en) * | 2013-09-23 | 2014-06-04 | 杭州绿洁水务科技有限公司 | Fixing device for underwater instrument |
| CN104386802A (en) * | 2014-11-14 | 2015-03-04 | 江苏亚太泵阀有限公司 | Double-supported submersible water impeller |
| CN104628055A (en) * | 2015-01-29 | 2015-05-20 | 南京飞力环保设备制造有限公司 | Submersible water impeller system and mounting method thereof |
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2018
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| JP2000167375A (en) * | 1998-12-09 | 2000-06-20 | Shin Meiwa Ind Co Ltd | Installing device of underwater mixer |
| WO2000051884A1 (en) * | 1999-03-03 | 2000-09-08 | Global Marine Inc. | High retraction marine thruster |
| CN203628196U (en) * | 2013-09-23 | 2014-06-04 | 杭州绿洁水务科技有限公司 | Fixing device for underwater instrument |
| CN104386802A (en) * | 2014-11-14 | 2015-03-04 | 江苏亚太泵阀有限公司 | Double-supported submersible water impeller |
| CN104628055A (en) * | 2015-01-29 | 2015-05-20 | 南京飞力环保设备制造有限公司 | Submersible water impeller system and mounting method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002606A (en) * | 2019-04-15 | 2019-07-12 | 石家庄顺时科技有限公司 | A kind of sewage treatment segmentation bracket and its mention drop assembly and disassembly methods |
| CN110002606B (en) * | 2019-04-15 | 2024-01-12 | 广东顺时环保科技有限公司 | Sewage treatment sectional support and lifting and disassembling method thereof |
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| 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 |
Address after: 610000 No. 147 Qintai Road, Qingyang District, Chengdu City, Sichuan Province Applicant after: CHENGDU CONSTRUCTION INDUSTRIAL EQUIPMENT INSTALLATION Co.,Ltd. Address before: 610000 No. 147 Qintai Road, Qingyang District, Chengdu City, Sichuan Province Applicant before: CHENGDU INDUSTRY EQUIPMENT INSTALLATION Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |