CN207130297U - Oxygen rifle slag cleaner - Google Patents
Oxygen rifle slag cleaner Download PDFInfo
- Publication number
- CN207130297U CN207130297U CN201721182996.8U CN201721182996U CN207130297U CN 207130297 U CN207130297 U CN 207130297U CN 201721182996 U CN201721182996 U CN 201721182996U CN 207130297 U CN207130297 U CN 207130297U
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- Prior art keywords
- cutting
- oxygen rifle
- seat
- fixed
- slag
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- Expired - Fee Related
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides a kind of oxygen rifle slag cleaner, belongs to metal smelt technical field.It includes cleaning seat, described cleaning seat is provided with active cutting mecha, passive cutting mechanism is additionally provided with cleaning seat, described active cutting mecha includes the first fixed seat being fixed on cleaning seat, cutting wheel assembly is hinged with first fixed seat, passive cutting mechanism includes the expansion bend being fixed in cleaning seat side wall, and described expansion bend end is connected with follower, and described follower has the cutting edge to be matched with oxygen rifle outer surface.The utility model strikes off completely to slag, and can control and scrape slag thickness.
Description
Technical field
The utility model belongs to metal smelt technical field, is related to oxygen rifle, more particularly, to a kind of oxygen rifle slag cleaner.
Background technology
Oxygen rifle is one of key equipment of pneumatic steelmaking, and bath lancing when it is responsible for blowing into converter and blowing are tied
Nitrogen flushing carries out slag splashing to protect the task of furnace lining in Shu Houxiang converters.
Oxygen rifle inevitably adheres to slag during blowing and slag splashing on oxygen rifle outer layer pipe, if not
Slag is struck off in time, with the increase for smelting number, the slag adhered on oxygen rifle outer layer pipe is more and more thick, can make when serious
Oxygen rifle can not be lifted normally.If imperative operation will burn oxygen rifle lifting motor or break steel wire rope, at this moment will can only glue
The oxygen rifle of slag is cut off with flame cutting machine, is removed the oxygen rifle cut off, is more renewed oxygen rifle.Therefore cause the service life of oxygen rifle big
To reduce, not only add the cost depletions of oxygen rifle, and frequently burning torch, change the continuity that rifle destroys STEELMAKING PRODUCTION, increase
The labor intensity of worker.
At present, oxygen rifle slag manner of cleaning up has two kinds of manual cleaning and automatic scraping slag：
When clearing up the slag adhered in oxygen rifle using manual cleaning mode, not only working environment is severe, and labor intensity is big, and
And can only could be carried out when stopping and producing, time-consuming, efficiency is low.
Existing automatic scraping slag equipment, it is substantially consistent that it, which scrapes slag principle, is all when bessemerizing or slag splashing
While finishing oxygen rifle proposition oxygen rifle mouth, two mechanical arms in air control unit driving left and right of Dreg Scraping Device of Oxygen Lance, make mechanical arm
U-shaped or semi-circular slag scraper cutter head close up hold around adhesion slag oxygen rifle, oxygen rifle lifted when, slag scraper cutter head starts scraping and glued
Invest the slag in oxygen rifle.But the complexity of oxygen lance operation necessarily causes in oxygen rifle slag mixed viscous, even one layer of steel sometimes
One layer of slag, runs into such a situation, and existing Dreg Scraping Device of Oxygen Lance is difficult to the slag for wiping oxygen rifle adhesion off.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, providing a kind of oxygen rifle slag cleaner.
To reach above-mentioned purpose, the utility model employs following technical proposal：A kind of oxygen rifle slag cleaner, including it is clear
Seat is managed, described cleaning seat is provided with active cutting mecha, is additionally provided with passive cutting mechanism on cleaning seat, described active is cut
Cutting mill structure includes the first fixed seat being fixed on cleaning seat, and cutting wheel assembly is hinged with the first fixed seat,
Passive cutting mechanism includes the expansion bend being fixed in cleaning seat side wall, and described expansion bend end is connected with passively
Wheel, described follower have the cutting edge to be matched with oxygen rifle outer surface.
In above-mentioned oxygen rifle slag cleaner, the cross section semicircular in shape of described cutting edge, cutting edge appearance mask
There is stepped cutting teeth.
In above-mentioned oxygen rifle slag cleaner, described cutting wheel assembly includes the driver being hinged with the first fixed seat
Mounting seat, described driver mounting seat are provided with driver, and driver is by being driven band connection cutting wheel, described cutting wheel
With cut surface in a ring, clear up in seat side wall and be hinged with cutting wheel regulator, described cutting wheel regulator and driver
Mounting seat is hinged, and described cutting wheel regulator has can axially reciprocating output shaft.
In above-mentioned oxygen rifle slag cleaner, cut surface is divided into by any one by the section of cutting wheel center line
The cutting profile of two semicirculars in shape, and center line of two cutting profiles along cutting wheel is symmetrical in minute surface.
In above-mentioned oxygen rifle slag cleaner, one is provided with the side wall of cleaning seat and above passive cutting mechanism
The individual oxygen rifle outer surface that can detect is to the length detection mechanism of distance between cleaning seat.
In above-mentioned oxygen rifle slag cleaner, described length detection mechanism includes the detection side walls hinged with cleaning seat
Frame, and the linear transducer being fixed in cleaning seat side wall, described linear transducer connecting detection frame, in detection machine
The end of frame is rotatably connected to detection wheel.
In above-mentioned oxygen rifle slag cleaner, described passive cutting mechanism includes the second fixed seat, the second fixed seat
It is fixedly connected with cleaning seat side wall, expansion bend is fixed in the second fixed seat, and described expansion bend has can be along reciprocating motion
Output shaft.
In above-mentioned oxygen rifle slag cleaner, the second described fixed seat is provided with detection bracket, described detection bracket
It is fixedly connected with the output shaft of expansion bend so as to be moved back and forth with output shaft, detection frame is pressed on detection bracket, the
Two fixed seats are provided with the slideway to be matched with detection bracket shape.
In above-mentioned oxygen rifle slag cleaner, the second described fixed seat is provided with lifter, described lifting utensil
Having axially reciprocating output shaft, detection frame to be pressed on the output shaft of lifter.
In above-mentioned oxygen rifle slag cleaner, chute is provided with the second described fixed seat, expansion bend is fixed on chute
It is interior, and the size of follower matches so as to make follower extend outside chute or be received into chute with chute.
Compared with prior art, the utility model has the advantage of：
By the way of active cutting and passive cutting are combined, the slag cutting to oxygen rifle surface is complete, and cutting wheel is set
To count ingenious, lasting circumgyration incision function can be realized, slag cut clear, follower has stair-stepping cutting teeth,
Passive good cutting effect, strike off completely.
Using the setting of length detection mechanism, the thickness of steel slag on oxygen rifle surface can be detected, so as to control cutting thick
Degree, prevent cutting from excessively causing to damage to oxygen rifle.
Further advantage, target and feature of the present utility model embody part by following explanation, and part will also pass through
Research of the present utility model and practice are understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is structural representation provided by the utility model.
Fig. 2 is the structural representation for cutting wheel assembly.
Fig. 3 is the fundamental diagram of length detection mechanism.
Fig. 4 is the structural representation of passive cutting mechanism.
Fig. 5 is to detect the working state figure between bracket and detection frame.
Fig. 6 is to detect another working state figure between bracket and detection frame.
Fig. 7 is the working state figure between lifter and detection frame.
Fig. 8 is another working state figure between lifter and detection frame.
Fig. 9 is the structural representation of cutting profile.
Figure 10 is another direction structure schematic diagram of Fig. 9.
Figure 11 is the structural representation of follower.
Figure 12 is Figure 11 A-A sectional views.
Figure 13 is Figure 11 another pattern A-A sectional views.
Figure 14 is utility model works schematic diagram.
It is cleaning seat 1, active cutting mecha 2, passive cutting mechanism 3, the first fixed seat 4, cutting wheel assembly 5, flexible in figure
Device 6, follower 7, cutting edge 8, cutting teeth 9, driver mounting seat 10, driver 11, transmission belt 12, cutting wheel 13, cut surface
14th, cut wheel regulator 15, cutting profile 16, sawtooth 16a, length detection mechanism 17, detection frame 18, linear transducer 19,
Detection wheel 20, the second fixed seat 21, detection bracket 22, slideway 23, lifter 24, chute 25, oxygen rifle 100, slag 101, oxygen rifle
Lifting rope 102.
Embodiment
Embodiment 1
As shown in figure 1, a kind of oxygen rifle slag cleaner, including cleaning seat 1, described cleaning seat 1, which is provided with, actively to be cut
Mechanism 2, is additionally provided with passive cutting mechanism 3 on cleaning seat 1, and described active cutting mecha 2 includes being fixed on cleaning seat 1
First fixed seat 4, cutting wheel assembly 5 is hinged with the first fixed seat 4, cutting wheel assembly 5 can be rotated circumferentially, to being attached to oxygen
Slag on rifle 100 is removed.
Passive cutting mechanism 3 includes the expansion bend 6 being fixed in the cleaning side wall of seat 1, and expansion bend has can be along linear reciprocation
The output shaft of motion, such as cylinder or oil cylinder, in the present embodiment, expansion bend 6 is oil cylinder, can adjust and control collapsing length,
The described end of expansion bend 6 is connected with follower 7, and described follower 7 has the cutting edge 8 to be matched with oxygen rifle outer surface,
Follower 7 is fixedly connected with the output shaft of expansion bend, when oxygen rifle 100 moves up and down, contacts the cutting edge 8 of follower 7, so as to
Strike off the slag on oxygen rifle surface.
The present embodiment, using the combination of actively and passively two kinds of cutting modes, the slag on oxygen rifle surface is realized quickly and
It is complete to remove.
Preferred scheme, with reference to shown in Figure 11, the cross section semicircular in shape of cutting edge 8, it is in ladder that the outer surface of cutting edge 8, which has,
The cutting teeth 9 of shape.
With reference to shown in Figure 12,9 rectangular shape of cutting teeth, successively it is mutually arranged into a ladder, with reference to shown in Figure 13, cutting teeth
In spininess, successively it is mutually arranged into a ladder, the surface of cutting teeth 9 forms arc surfaced after being connected with each other.
Because follower 7 is slag that the surface of oxygen rifle 100 is struck off using the principle of hard friction, therefore, the application's is in
Stair-stepping cutting teeth 9 will not cause to strike off too many slag and straight using scraping step by step so as to realize the quick removal of slag
Oxygen rifle surface is contacted, causes oxygen rifle to be damaged.
With reference to shown in Fig. 1 and Fig. 2, cutting wheel assembly 5 includes the driver mounting seat 10 being hinged with the first fixed seat 4, institute
The driver mounting seat 10 stated is provided with driver 11, and driver 11 connects cutting wheel 13, described cutting by transmission belt 12
Wheel 13 has cut surface 14 in a ring, clears up in the side wall of seat 1 and is hinged with cutting wheel regulator 15, described cutting wheel regulator
15 is be hinged with driver mounting seat 10, and described cutting wheel regulator 15 has can axially reciprocating output shaft.Cut
It is preferably oil cylinder to cut wheel regulator 15, and by the action of output shaft, drive cutting wheel 13 is closer or far from oxygen rifle, driver 11
Motor, cutting wheel 13 is driven to rotate.Cut surface 14 in a ring, continues to contact with the slag on oxygen rifle surface, forms lasting cutting.
With reference to shown in Fig. 2, cut surface 14 is divided into two in half by any one by the section of the center line of cutting wheel 13
Circular cutting profile 16, and center line of two cutting profiles 16 along cutting wheel 13 is symmetrical in minute surface.The shape of cutting profile 16
Shape, size and oxygen rifle match.
There is the sawtooth 16a being interspersed with reference to shown in Fig. 9 and Figure 10, on cutting profile 16.
One is provided with the side wall of cleaning seat 1 and above passive cutting mechanism 3 can detect oxygen rifle outer surface to clearly
The length detection mechanism 17 of distance between reason seat 1.
The effect of length detection mechanism 17 is, by detecting oxygen rifle surface to the distance between side wall of seat 1 is cleared up, so as to control
The output length of expansion bend 6 processed and the output shaft of cutting wheel regulator 15, control follower 7 and cutting wheel 13 and oxygen rifle 100 it
Between distance, prevent from excessively cutting the slag in oxygen rifle, cause oxygen rifle to be damaged.
In the present embodiment, with reference to shown in Fig. 3, length detection mechanism 17 includes the detection machine side walls hinged with cleaning seat 1
Frame 18, and the linear transducer 19 being fixed in the cleaning side wall of seat 1, the described connecting detection frame 18 of linear transducer 19,
Detection wheel 20 is rotatably connected in the end of detection frame 18, in rolling when detection wheel 20 contacts with the slag 101 on oxygen rifle surface
State, monitoring in real time is realized, linear transducer 19 is prior art.
Passive cutting mechanism 3 includes the second fixed seat 21, and the second fixed seat 21 is fixedly connected with the cleaning side wall of seat 1, stretched
Device 6 is fixed in the second fixed seat 21, and described expansion bend 6 has can be along reciprocating output shaft.In the present embodiment, stretch
Contracting device 6 is oil cylinder, and output shaft can be controlled to export length.
With reference to shown in Fig. 5 and Fig. 6, the second fixed seat 21 is provided with detection bracket 22, and the top of detection bracket 22 is oblique with being oriented to
Face, described detection bracket 22 are fixedly connected with the output shaft of expansion bend 6 so as to be moved back and forth with output shaft, detect frame 18
It is pressed on detection bracket 22, the slideway 23 to be matched with the detection shape of bracket 22 is provided with the second fixed seat 21.Work as detection
When bracket 22 moves back and forth, detection frame 18 is rotated and moved up and down, and drives detection wheel 20 closer or far from oxygen rifle 100.
With reference to shown in Fig. 4, chute 25 is provided with the second fixed seat 21, expansion bend 6 is fixed in chute, and follower 7
Size is matched with chute 25 so as to make follower 7 extend outside chute 25 or be received into chute 25.
Operation principle of the present utility model is：
Cleaning seat 1 has bottom surface and side wall, and the first fixed seat 4 is fixed on the bottom surface of cleaning seat 1, and the second fixed seat 21 is solid
It is scheduled in the side wall of cleaning seat 1.
With reference to shown in Figure 14, oxygen rifle 100 connects oxygen rifle lifting rope 102, and oxygen rifle lifting rope 102 connects hoist engine or manually dragged
It is dynamic, the uneven thickness of slag 101 of the outer wall of oxygen rifle 100, therefore need to control cutting thickness during cutting, cutting otherwise can be caused excessive
Or cutting is incomplete, can all influence the use of oxygen rifle.
In the present embodiment, when oxygen rifle 100 is not coming into operation, should first check oxygen rifle outer wall and cleaning seat 1 side wall it
Between distance, the detection of distance obtained using linear transducer 19, and concrete operations are：Oxygen rifle 100 is placed in two opposite oxygen
Between rifle slag cleaner, the structure of each oxygen rifle slag cleaner makes follower 7 and oxygen as described above, expansion bend 6 first acts
Rifle 100 is bonded, and obtains the maximum advance value T0 of expansion bend 6, and detection bracket 22 is moved with expansion bend 6, and detection frame 18, which rotates, to be made
Detection wheel 20 is bonded with oxygen rifle outer wall, and linear transducer 19 obtains an oxygen rifle outer wall with clearing up the distance between the side wall of seat 1
Initial value D0, after oxygen rifle uses a period of time, outer wall can produce slag 101, it is necessary to carry out scraping slag cleaning.
Likewise, repeating the above steps, drive follower 7 to be bonded slag surface with the action of expansion bend 6, further make
Detection wheel 20 is bonded slag surface, and the value that linear transducer 19 obtains detected value D1, D0-D1 is exactly the thickness of slag.
The oxygen rifle for making to measure drops to the position coordinated with active cutting mecha 2, and cutting wheel regulator 15 is acted, driven
Driver mounting seat 10 works close to oxygen rifle 100, driver 11, drives cutting wheel 13 to rotate, slag is cut, cut
During, the perseveration of wheel regulator 15 is cut, makes cutting wheel 13 when cutting slag close to oxygen rifle, so as to fully erased oxygen rifle
The slag on surface, D0-D1 value is exactly that cutting wheel 13 cuts to the value that cutting is completed, the shifting of cutting wheel 13 by fitting slag
On the one hand dynamic distance can be controlled by cutting wheel regulator 15, on the other hand can also be entered by setting scale on cleaning seat 1
Row control.
In the cutting process of active cutting mecha 2, length detection mechanism 17 persistently detects to thickness of steel slag, is follow-up
The thickness that active cutting mecha 2 cuts slag provides foundation.
By above-mentioned scheme, oxygen rifle continuous decrease, active cutting mecha 2 is cut the slag on oxygen rifle surface, until
Whole oxygen rifle all carries out active slagging-off.
It is in next step passive slagging-off, cutting wheel regulator 15 first drives cutting wheel 13 to depart from oxygen rifle surface, and expansion bend 6 is dynamic
Make, driving follower 7, the maximum advance distance due to having measured expansion bend 6 before is T0 close to oxygen rifle, therefore is controlled flexible
The advance value of device 6 is not more than T0, after follower 7 is bonded oxygen rifle surface, stair-stepping cutting edge 8 namely fitting oxygen rifle table
Face, oxygen rifle lifting rope 102 pull oxygen rifle 100 to rise, and cutting edge 8 is progressively struck off processing to the slag of the remained on surface of oxygen rifle 100,
Rise to oxygen rifle and finish.
Cutting wheel 13 is fast to slag cutting speed, but slag surface is in roughness, and is cut for 7 two times by follower
After cutting, follower 7 makes slag or oxygen rifle surface form smooth face, so that the operating efficiency of oxygen rifle is improved.
It will be appreciated by those skilled in the art that oxygen rifle 100 can as stated above, lifting is multiple repeatedly, carries out at slagging-off
Reason.
Embodiment 2
The present embodiment and the structure and operation principle of embodiment 1 are essentially identical, and difference is, with reference to Fig. 7 and Fig. 8 institutes
Show, the second fixed seat 21 is provided with lifter 24, described lifter 24 have can axially reciprocating output shaft, inspection
Frame 18 is surveyed to be pressed on the output shaft of lifter 24.Lifter 24 is cylinder or oil cylinder, preferably oil cylinder.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although more used herein cleaning seat 1, active cutting mecha 2, passive cutting mechanism 3, the first fixed seat 4,
Cut wheel assembly 5, expansion bend 6, follower 7, cutting edge 8, cutting teeth 9, driver mounting seat 10, driver 11, transmission belt 12,
Cutting wheel 13, cut surface 14, cutting wheel regulator 15, cutting profile 16, sawtooth 16a, length detection mechanism 17, detection frame
18th, linear transducer 19, detection wheel 20, the second fixed seat 21, detection bracket 22, slideway 23, lifter 24, chute 25, oxygen rifle
100th, the term such as slag 101, oxygen rifle lifting rope 102, but it is not precluded from the possibility using other terms.Using these terms only
Be in order to more easily describe and explain essence of the present utility model, be construed as any additional limitation be all with
The utility model spirit is disagreed.
Claims (10)
1. a kind of oxygen rifle slag cleaner, including cleaning seat (1), described cleaning seat (1) are provided with active cutting mecha (2),
Characterized in that, being additionally provided with passive cutting mechanism (3) on cleaning seat (1), described active cutting mecha (2) includes being fixed on
The first fixed seat (4) cleared up on seat (1), cutting wheel assembly (5) is hinged with the first fixed seat (4),
Passive cutting mechanism (3) includes the expansion bend (6) being fixed in cleaning seat (1) side wall, and described expansion bend (6) end connects
Follower (7) is connected to, described follower (7) has the cutting edge (8) to be matched with oxygen rifle outer surface.
2. oxygen rifle slag cleaner according to claim 1, it is characterised in that the cross section of described cutting edge (8) is in
Semicircle, cutting edge (8) outer surface have stepped cutting teeth (9).
3. oxygen rifle slag cleaner according to claim 1, it is characterised in that described cutting wheel assembly (5) include with
The be hinged driver mounting seat (10) of first fixed seat (4), described driver mounting seat (10) are provided with driver (11), drive
Dynamic device (11) connects cutting wheel (13) by transmission belt (12), and described cutting wheel (13) has cut surface (14) in a ring,
Cutting wheel regulator (15), described cutting wheel regulator (15) and driver mounting seat are hinged with cleaning seat (1) side wall
(10) it is hinged, described cutting wheel regulator (15) has can axially reciprocating output shaft.
4. oxygen rifle slag cleaner according to claim 3, it is characterised in that any one passes through cutting wheel (13) center
Cut surface (14) is divided into the cutting profile (16) of two semicirculars in shape, and two cutting profiles (16) edge cuttings by the section of line
The center line for taking turns (13) is symmetrical in minute surface.
5. oxygen rifle slag cleaner according to claim 1, it is characterised in that in the side wall of cleaning seat (1) and be located at
One is provided with above passive cutting mechanism (3) can detect oxygen rifle outer surface to the length detection mechanism of distance between cleaning seat (1)
(17)。
6. oxygen rifle slag cleaner according to claim 5, it is characterised in that described length detection mechanism (17) includes
The side walls hinged detection frame (18) with cleaning seat (1), and the linear transducer (19) being fixed in cleaning seat (1) side wall,
Described linear transducer (19) connecting detection frame (18), detection wheel is rotatably connected in the end of detection frame (18)
(20)。
7. oxygen rifle slag cleaner according to claim 6, it is characterised in that described passive cutting mechanism (3) includes
Second fixed seat (21), the second fixed seat (21) are fixedly connected with cleaning seat (1) side wall, and expansion bend (6) is fixed on the second fixation
On seat (21), described expansion bend (6) has can be along reciprocating output shaft.
8. oxygen rifle slag cleaner according to claim 7, it is characterised in that described the second fixed seat (21) is provided with inspection
Bracket (22) is surveyed, described detection bracket (22) is fixedly connected so as to back and forth be transported with output shaft with the output shaft of expansion bend (6)
Dynamic, detection frame (18) is pressed on detection bracket (22), is provided with the second fixed seat (21) with detecting bracket (22) shape
The slideway (23) to match.
9. oxygen rifle slag cleaner according to claim 7, it is characterised in that described the second fixed seat (21) is provided with
Lifter (24), described lifter (24) have and axially reciprocating output shaft, detection frame (18) can be pressed on
On the output shaft of lifter (24).
10. oxygen rifle slag cleaner according to claim 7, it is characterised in that set in described the second fixed seat (21)
Have chute (25), expansion bend (6) is fixed in chute, and the size of follower (7) and chute (25) match so as to make by
Driving wheel (7) extends chute (25) outside or is received into chute (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721182996.8U CN207130297U (en) | 2017-09-15 | 2017-09-15 | Oxygen rifle slag cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721182996.8U CN207130297U (en) | 2017-09-15 | 2017-09-15 | Oxygen rifle slag cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207130297U true CN207130297U (en) | 2018-03-23 |
Family
ID=61638448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721182996.8U Expired - Fee Related CN207130297U (en) | 2017-09-15 | 2017-09-15 | Oxygen rifle slag cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207130297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354265A (en) * | 2017-09-15 | 2017-11-17 | 过柯丽 | Oxygen rifle slag cleaner |
-
2017
- 2017-09-15 CN CN201721182996.8U patent/CN207130297U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354265A (en) * | 2017-09-15 | 2017-11-17 | 过柯丽 | Oxygen rifle slag cleaner |
| CN107354265B (en) * | 2017-09-15 | 2019-04-16 | 过柯丽 | Oxygen rifle steel slag cleaner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180323 Termination date: 20180915 |