CN108680029A - A kind of improved vibration premixed type concentrate burner - Google Patents
A kind of improved vibration premixed type concentrate burner Download PDFInfo
- Publication number
- CN108680029A CN108680029A CN201810262167.3A CN201810262167A CN108680029A CN 108680029 A CN108680029 A CN 108680029A CN 201810262167 A CN201810262167 A CN 201810262167A CN 108680029 A CN108680029 A CN 108680029A
- Authority
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- China
- Prior art keywords
- air hose
- dispersion
- air
- material feeding
- feeding box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/18—Charging particulate material using a fluid carrier
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/0047—Smelting or converting flash smelting or converting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/01—Charges containing mainly non-ferrous metals
- F27M2001/015—Copper
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
This divisional application discloses a kind of improved vibration premixed type concentrate burner, the dispersion air hose of the oxygen supplying tube of arrangement, hollow annular is overlapped and is vertically arranged including tube core, and form the taper technique bellows of air compartment, disperse the material feeding box that oblique under shed at the top of it is arranged on the outer wall of air hose, and it is fixed with horizontal fixed plate at the top of the dispersion air hose of hollow annular, it is fixed in the end far from dispersion wind pipeline in fixed plate and falls the pneumatic hammer vibrating device of dross by driving to disperse to shake by air hose pumps；It feeds and is equipped with the feed inlet premix air port of air port upward on the downside of box opening；Technique bellows entrance is equipped with the technique wind rotation direction device for making gas tangentially premix concentrate powder；It is additionally provided with the independent premix supply air line and pre-mixed air beam device for leading to material feeding box bottom in dispersion air hose, the inward turning air hose towards discharge port is additionally provided on the outside of material feeding box.The present invention is vibration premixed type concentrate burner, the combustion efficiency that can effectively reduce dross phenomenon, improve copper concentrate mineral aggregate.
Description
The application is application number 201610632799.5, on 08 04th, 2016 applying date, " a kind of vibration is pre- for denomination of invention
The divisional application of mixed type concentrate burner ".
Technical field
The invention belongs to the technical field of smelting of copper, and in particular to a kind of improved vibration premixed type concentrate burner.
Background technology
It is that concentrate burner and the technique for blasting technique wind are set at the top of smelting furnace in the Flash Smelting Furnace smelting technology of copper
Bellows spray into copper concentrate mineral aggregate, oxygen and dispersion wind, in the bottom of concentrate burner, mine by concentrate burner into smelting furnace
Material is mixed with technique wind and ignition forms clinker and matte, and mineral aggregate is sufficiently mixed with the realization of technique wind, this is mineral aggregate in essence
Rapid, complete oxidation one of essential condition is carried out in the limited space in mine nozzle lower part.
Currently, the concentrate burner that copper mine enterprise uses is expanded by the center that Outokumpu company designs and produces mostly
It dissipates type concentrate burner and mainly passes through gas phase as shown in Figure 1, being that mineral aggregate and technique wind spray into stove in the same direction the characteristics of concentrate burner
Achieve the purpose that mixing with the counterdiffusion of solid phase phase, infiltration, when carrying out low level material spray using this central diffused concentrate burner,
That is when the entrance of mineral aggregate is exported close to technique wind, mineral aggregate is easier to mix with technique wind, but in high-order material spray, also just says
The entrance of mineral aggregate is higher, when still having certain difference in height with the outlet of technique wind, mineral aggregate reaction time relative delay at this time, separately
Outside, when the input amount of mineral aggregate is less, enter stove mineral aggregate rapidly can be heated to reaction temperature by furnace high-temperature flue gas or radiant heat,
And in the range of exporting about 1.5m apart from concentrate burner begin to that violent combustion reaction occurs, and the input amount of mineral aggregate is more
When, in the finite spatial extent of reaction tower top feed mouth, it is difficult to ensure that mineral aggregate is enough sufficiently mixed with technique wind energy, Er Qie
Concentrate burner bottom easy tos produce bonding phenomenon；Simultaneously as the water cooled bottom plate of nozzle lower end, plays certain heat-insulated and subtract
Few noclulation, but in actual motion, due to longtime running, certain dross phenomenon is still produced in water cooled bottom plate lower end, from
And the mass transfer of combustion reaction, rate of heat transfer are leveraged, not only cause the ferroso-ferric oxide content in clinker to increase, dust rate
And SO3Production rate rises, and utilization ratio is also decreased obviously, and then influences the production capacity of melting product copper.
Therefore, how to ensure being sufficiently mixed for mineral aggregate and technique wind, improve the counterdiffusion of gas-solid phase, infiltration, solve in not shadow
Under conditions of ringing production, the problem of periodic cleaning nozzle lower part dross, the combustion efficiency of copper concentrate mineral aggregate is improved, this is molten to flash
It is extremely important for sweetening process.
Invention content
Against the above deficiency, the present invention provides one kind under conditions of not influencing production, is sufficiently mixed mineral aggregate and technique
The problem of wind, periodic cleaning nozzle lower part dross, so as to the burning effect for effectively reducing dross phenomenon, improving copper concentrate mineral aggregate
The vibration premixed type concentrate burner of fruit.
To achieve the above object, present invention employs following technical schemes：
A kind of improved vibration premixed type concentrate burner, including tube core overlap and are vertically arranged the oxygen supply of arrangement successively
The dispersion air hose of pipe, hollow annular, and the taper technique bellows of air compartment are formed, it is arranged on the outer wall of the dispersion air hose
The material feeding box of its oblique under shed in top, and it is fixed with horizontal fixed plate at the top of the dispersion air hose of hollow annular, in fixed plate
The upper end far from dispersion wind pipeline is fixed with to disperse to shake by air hose pumps by drive and falls the pneumatic hammer of dross and shake
Dynamic device；The pneumatic hammer vibrating device include be installed in pneumatic hammer on the upside of fixed plate, be connected with pneumatic hammer on the downside of fixed plate it is strong
Power spring and guide rod are set on the guide rod on the upside of the brute spring, and the lower end of brute spring is supported on charging
On case；The technique bellows are equipped with the technique wind rotation direction device for making gas tangentially premix concentrate powder in diameter maximum.
Preferably, the lower semisection of the brute spring is sheathed in pilot sleeve, and locking is provided on the upside of pilot sleeve
Nut, pilot sleeve are fixed on by the pedestal on the downside of it on the top of material feeding box, and pilot sleeve is located at locking nut and bottom
The positioning plate being fixedly connected with dispersion air hose is arranged on stack shell between seat.
Further, it is 3 that the pneumatic hammer vibrating device is uniformly distributed in fixed plate.
Preferably, the neighbouring downside of the charging box opening is equipped with the feed inlet of air port upward and premixes air port.
Preferably, the technique wind rotation direction device is set as oblique technique that is parallel along the inclined surface of taper technique bellows and setting
Wind inlet, to form the whirlwind that can tangentially premix concentrate powder.
Preferably, it is additionally provided with the independent premix supply air line for leading to material feeding box bottom in the dispersion air hose and surrounds and is somebody's turn to do
Pre-mixed air beam device in pipeline side；The pre-mixed air beam device is equipped with the tangential swing angle for tilting 30 ° towards lateral direction.
The beneficial effects of the present invention are：
1), the present invention is provided with pneumatic hammer vibrating device, pneumatic hammer vibrating device include be installed in pneumatic hammer on the upside of fixed plate,
The brute spring and guide rod being connected with pneumatic hammer on the downside of fixed plate；Wherein, the brute spring is set on the guide rod；By
In the prolonged difference smelted or concentrate amount is how many, a certain amount of dross phenomenon can be caused in nozzle bottom end, when pneumatic hammer is hammered into shape
When hitting, fixed plate compresses brute spring to drive dispersion air hose to do guiding movement up and down along guide rod therewith, makes dispersion wind
Pipe generates transient vibration, and caking product can shake and fall；Therefore the present invention can clear up dross operation automatically in process of production, greatly
Ground improves production efficiency, while can greatly reduce equipment maintenance cost.
2), the neighbouring downside of present invention charging box opening is equipped with the feed inlet of air port upward and premixes air port, when by drying
Powdery concentrate when entering material feeding box, when bulk concentrate powder feed can be made by being put into feed inlet pre-mixed air upwards by air port
Disperse as possible, the unlikely situation for causing charging uneven ensure that the reliability service of the present invention.
3), of the invention when concentrate powder falls to the pre-mixed air beam for making the independent gas premixed in supply air line tangentially blow out
When device, is further disperseed using 30 ° of tangential swing angle of pre-mixed air beam device, improve the effect of gas-solid mixing.
4), the present invention passes through technique wind rotation direction when concentrate powder down and when disperseing around by taper technique bellows
The whirlwind of device blowout, tangentially premixes concentrate powder, premix residence time of the concentrate powder in reversed nozzle can be improved, further carry
High premixing effect improves production efficiency.
5), in conclusion the present invention is a kind of vibration premixed type concentrate burner, by disperseing air hose, independent premix gas supply
Pipeline and pre-mixed air beam device, feed inlet premix air port are entered the wind obliquely, multiple its cloth of premix of technique wind rotation direction device progress is equal
It is even, inner space can be made full use of so that concentrate and oxygen can be mixed more fully, and be had by pneumatic hammer vibrating device
Effect completes automatic clear tumor operation, improves the service life of concentrate burner, and improve the product quality of Copper making, reduces
Environmental pollution.
Description of the drawings
Fig. 1 is the structural schematic diagram for being the concentrate burner of flash smelting furnace in the prior art.
Fig. 2 is the structure sectional view of the present invention.
Fig. 3 is the amplification assumption diagram of pneumatic hammer vibrating device of the present invention (wherein brute spring only depicts the first part).
Fig. 4 is the partial enlarged view of Fig. 2.
Fig. 5 is the vertical view schematic diagram of Fig. 2.
Fig. 6 is technique wind rotation direction device graphics
The meaning of label symbol is as follows in figure：
10- oxygen supplying tubes 11- dispersions air hose 110- independently premixes supply air line
111- pre-mixed air beam device 112- lamellated plate 113- water cooled bottom plate 12- material feeding box
120- feed inlets premix air port 13- water-cooling system 14- technique bellows
140- technique wind rotation direction devices
20- fixed plate 21- pneumatic hammer vibrating device 210- pneumatic hammer 211- brute springs
212- guide rod 213- pilot sleeve 214- positioning plate 215- locking nuts
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in the present invention
It states.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
As shown in Fig. 2, for a kind of improved vibration premixed type concentrate burner, including tube core is overlapped and is vertically arranged successively
The oxygen supplying tube 10 of arrangement, the dispersion air hose 11 of hollow annular, and form the taper technique bellows 14 of air compartment, the dispersion air hose
11 be side air admission, and the material feeding box 12 of oblique under shed at the top of it, and cavity ring are arranged on the outer wall of dispersion air hose 11
11 top of dispersion air hose of shape is fixed with horizontal fixed plate 20, and one end far from dispersion wind pipeline in fixed plate 20 is fixed with
Disperse the pneumatic hammer vibrating device 21 that dross is removed by air hose 11 pumps by drive.
Specifically, in conjunction with shown in Fig. 3, the pneumatic hammer vibrating device 21 include the pneumatic hammer 210 for being installed in 20 upside of fixed plate,
The brute spring 211 and guide rod 212 being connected with pneumatic hammer 210 in 20 downside of fixed plate；Wherein, the guide rod 212 is inserted in
In brute spring 211；The downside movable supporting of brute spring 211 is at the top of material feeding box 12.It is fixed when pneumatic hammer 210 hammers
Plate 20 drives guide rod 212 to compress brute spring 211 therewith, to drive dispersion air hose 11 to do fortune up and down by fixed plate 20
It is dynamic.
It is furthermore preferred that the lower semisection of above-mentioned brute spring 211 is also arranged with pilot sleeve 213, the upside of pilot sleeve 213
It is provided with locking nut 215, pilot sleeve 213 is fixed on by the pedestal on the downside of it on top of material feeding box 12, pilot sleeve
The positioning plate 214 being fixedly connected with dispersion air hose 11 is arranged on 213；This structure design makes locking nut 215, pilot sleeve
213 are fixed together with material feeding box 12, and when pneumatic hammer vibrating device 21 works, pneumatic hammer 210 drives fixed plate 20 to compress downwards
Brute spring 211, brute spring 211 do guiding movement in the direction that pilot sleeve 213 limits, and ensure that fixed plate 20, dispersion
Air hose 11, positioning plate 214 and brute spring 211 4 do the reciprocating motion above and below stablizing with pneumatic hammer 210, are not sent out because shaking
Raw horizontal direction displacement.The setting of the locking nut 215 can adjust the stroke of positioning plate 214.
And it as shown in figure 5, it is 3 that pneumatic hammer vibrating device 21 is uniformly distributed on ring-type fixing plate 20, is spaced
120 ° of central angle；So that the more smoothly vibration of pneumatic hammer 210, and avoid dispersion air hose 11 and rotated in vibration.
As a kind of further preferred embodiment, the neighbouring downside that the material feeding box 12 is open is equipped with the charging of air port upward
Mouth premix air port 120.
Heretofore described technique bellows 14 are equipped with the technique wind for making gas tangentially premix concentrate powder in diameter maximum
Rotation direction device 140.
Specifically, the technique wind rotation direction device 140 is as shown in fig. 6, it is set as along the inclined surface of taper technique bellows 14
The parallel and oblique technique wind inlet that sets, to form the whirlwind that can tangentially premix concentrate powder.
As a kind of further preferred embodiment, as shown in Figure 2,4, it is additionally provided in the dispersion air hose 11 and leads to material feeding box
The independent of bottom premixes supply air line 110 and around the pre-mixed air beam device 111 in pipeline side；The pre-mixed air beam device
111 equipped with the tangential swing angle β for rolling oblique 30 ° outwardly.
Following detailed description is made to the pre-compounding process of the present invention below in conjunction with the accompanying drawings.
S1, first, when dried powdery concentrate is directly entered material feeding box 12, the powder for being placed in nozzle interior cannot be equal
Point, it is entered the wind at air port 120 by being premixed from the upward feed inlet in air port so that disperse as possible when bulk concentrate powder feed；
S2, then, when concentrate powder falls to the pre-mixed air for making the independent gas premixed in supply air line 110 tangentially blow out
When beam device 111, the tangential swing angle using 30 degree on pre-mixed air beam device 111 further disperses；
Also, when disperseing gas in air hose 11 and flowing to one end close to air outlet, ventilative lamellated plate 112 is passed through,
It is even to be contacted with concentrate powder, improve gas-solid mixing effect；
When concentrate powder down and when disperseing around by taper technique bellows 14, pass through technique wind rotation direction device 140
The whirlwind of blowout, tangentially premixes concentrate powder, and premix residence time of the concentrate powder in nozzle can be improved, further increase premix
Effect improves production efficiency；
S3, due to smelting for a long time, concentrate amount it is how much different, in nozzle bottom end can cause a certain amount of caking phenomenon,
It can be hammered by pneumatic hammer 210, to which fixed plate 20 compresses brute spring 212 to drive dispersion wind along guide rod 212 therewith
Pipe 11 does guiding movement up and down, so that dispersion air hose 11 is generated transient vibration, caking product are shaken and are fallen.
Claims (6)
1. a kind of improved vibration premixed type concentrate burner, including tube core overlap and are vertically arranged the oxygen supplying tube of arrangement successively
(10), the dispersion air hose (11) of hollow annular, and form the taper technique bellows (14) of air compartment, it is characterised in that：Described point
The material feeding box (12) of oblique under shed at the top of it, and the dispersion air hose of hollow annular are arranged on the outer wall of relieve heat pipe (11)
(11) top is fixed with horizontal fixed plate (20), and the end far from dispersion wind pipeline in fixed plate (20), which is fixed with, passes through band
Dynamic dispersion air hose (11) pumps and shakes and fall the pneumatic hammer vibrating device (21) of dross；The pneumatic hammer vibrating device (21)
Including the pneumatic hammer (210) being installed on the upside of fixed plate (20), the brute spring being connected with pneumatic hammer (210) on the downside of fixed plate (20)
(211) and guide rod (212) it, is set on the guide rod (212) on the upside of the brute spring (211), brute spring
(211) lower end is supported on material feeding box (12)；The technique bellows (14) are equipped in diameter maximum keeps gas tangentially pre-
The technique wind rotation direction device (140) of mixed concentrate powder.
2. the improved vibration premixed type concentrate burner of one kind according to claim 1, it is characterised in that：The brute spring
(211) lower semisection is sheathed in pilot sleeve (213), and locking nut (215) is provided on the upside of pilot sleeve (213), is led
It is fixed on the top of material feeding box (12) by the pedestal on the downside of it to sleeve (213), pilot sleeve (213) is located at locking screw
It is arranged with the positioning plate (214) being fixedly connected with dispersion air hose (11) on the stack shell of female (215) between pedestal.
3. the improved vibration premixed type concentrate burner of one kind according to claim 2, it is characterised in that：The pneumatic hammer vibration
It is 3 that device (21) is uniformly distributed in fixed plate (20).
4. the improved vibration premixed type concentrate burner of one kind according to claim 1, it is characterised in that：The material feeding box
(12) the neighbouring downside being open is equipped with feed inlet premix air port (120) of air port upward.
5. the improved vibration premixed type concentrate burner of one kind according to claim 1, it is characterised in that：The technique wind rotation
It is set as oblique technique wind inlet that is parallel along the inclined surface of taper technique bellows (14) and setting to device (140), it can edge with formation
The whirlwind of tangential premix concentrate powder.
6. the improved vibration premixed type concentrate burner of one kind according to claim 1, it is characterised in that：The dispersion air hose
(11) the independent premix supply air line (110) for leading to material feeding box (12) bottom is additionally provided in and around this in the pre- of pipeline side
Mixed wind beam device (111)；The pre-mixed air beam device (111) is equipped with the tangential swing angle (β) for rolling oblique 30 ° outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810262167.3A CN108680029B (en) | 2016-08-04 | 2016-08-04 | A kind of improved vibration premixed type concentrate burner |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610632799.5A CN106288815B (en) | 2016-08-04 | 2016-08-04 | A kind of vibration premixed type concentrate burner |
| CN201810262167.3A CN108680029B (en) | 2016-08-04 | 2016-08-04 | A kind of improved vibration premixed type concentrate burner |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610632799.5A Division CN106288815B (en) | 2016-08-04 | 2016-08-04 | A kind of vibration premixed type concentrate burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108680029A true CN108680029A (en) | 2018-10-19 |
| CN108680029B CN108680029B (en) | 2019-08-02 |
Family
ID=57664686
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810262167.3A Active CN108680029B (en) | 2016-08-04 | 2016-08-04 | A kind of improved vibration premixed type concentrate burner |
| CN201610632799.5A Active CN106288815B (en) | 2016-08-04 | 2016-08-04 | A kind of vibration premixed type concentrate burner |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610632799.5A Active CN106288815B (en) | 2016-08-04 | 2016-08-04 | A kind of vibration premixed type concentrate burner |
Country Status (1)
| Country | Link |
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| CN (2) | CN108680029B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710159A (en) * | 2020-12-10 | 2021-04-27 | 广西金川有色金属有限公司 | Pure oxygen smelting device of flash furnace and using method thereof |
| CN116951987A (en) * | 2023-09-18 | 2023-10-27 | 张家港广大特材股份有限公司 | Air impact type powder dispersing device, method and reaction melting furnace applied to furnace mouth feeding pipe |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489277B (en) * | 2018-03-26 | 2019-08-30 | 合肥通用机械研究院有限公司 | A kind of adjustable premixed type concentrate burner of charging |
| CN110777265B (en) * | 2019-12-02 | 2024-02-20 | 江西铜业股份有限公司 | Concentrate nozzle of cyclone diffusion type flash furnace |
| CN110804702B (en) * | 2019-12-02 | 2024-09-27 | 江西铜业股份有限公司 | Concentrate burner for flash smelting |
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| CN104388695A (en) * | 2014-11-26 | 2015-03-04 | 铜陵有色金属集团股份有限公司金冠铜业分公司 | Jet nozzle of concentrate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112710159A (en) * | 2020-12-10 | 2021-04-27 | 广西金川有色金属有限公司 | Pure oxygen smelting device of flash furnace and using method thereof |
| CN116951987A (en) * | 2023-09-18 | 2023-10-27 | 张家港广大特材股份有限公司 | Air impact type powder dispersing device, method and reaction melting furnace applied to furnace mouth feeding pipe |
| CN116951987B (en) * | 2023-09-18 | 2024-01-05 | 张家港广大特材股份有限公司 | Air impact type powder dispersing device, method and reaction melting furnace applied to furnace mouth feeding pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106288815B (en) | 2018-06-29 |
| CN106288815A (en) | 2017-01-04 |
| CN108680029B (en) | 2019-08-02 |
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