CN209127380U - A kind of vinyl chloride storage tank - Google Patents
A kind of vinyl chloride storage tank Download PDFInfo
- Publication number
- CN209127380U CN209127380U CN201821702115.5U CN201821702115U CN209127380U CN 209127380 U CN209127380 U CN 209127380U CN 201821702115 U CN201821702115 U CN 201821702115U CN 209127380 U CN209127380 U CN 209127380U
- Authority
- CN
- China
- Prior art keywords
- sliding
- conducting block
- cavity
- slide
- wall
- 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.)
- Expired - Fee Related
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000007667 floating Methods 0.000 claims abstract description 36
- 230000007423 decrease Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 description 2
- 239000005050 vinyl trichlorosilane Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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- Catching Or Destruction (AREA)
Abstract
The utility model discloses a kind of vinyl chloride storage tanks, including tank body, liquid is equipped in the tank body, floating has floating ball on the liquid, the top side of the floating ball is fixedly installed with sliding bar, and the top of floating ball is equipped with the fixed link being fixedly mounted on the inner wall of tank body top side, cavity is offered in the fixed link, through-hole is offered on the bottom side inner wall of cavity, the top of the sliding bar is through through-hole and extends in cavity, one end that sliding bar is located in cavity is fixedly installed with sliding panel, slide opening there are two being opened up on the sliding panel, and two slide openings are symmetrical arranged based on sliding bar, slide bar is slidably fitted in the slide opening, and the both ends of slide bar all extend to outside slide opening, the both ends of the slide bar are respectively and fixedly installed on the top side and bottom side inner wall of cavity, what the top side of the sliding panel was fixedly installed between two slide bars first leads Electric block.The utility model can be convenient for reminding the intracorporal liquid level of tank too low and how high in time, and structure is simple, easy to use.
Description
Technical field
The utility model relates to chemical technology field more particularly to a kind of vinyl chloride storage tanks.
Background technique
Vinyl trichlorosilane is the important source material for synthesizing a variety of other ethylene base system organo silane coupling agents, is widely used in
Synthesis of vinyl trimethoxy silane, vinyl tributyl ketoximyl silane.Currently, the main synthesis mode of vinyl trichlorosilane
It is to be generated by vinyl chloride and trichlorosilane thermal condensation.Vinyl chloride is factory to be transported using groove tank car and by delivery system bulk cargo
It sets and is transported in vinyl chloride storage tank, however, existing vinyl chloride storage tank cannot remind in time the liquid level in tank excessively high in use
With it is too low, in use have certain limitation.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of vinyl chloride storage proposed
Tank.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of vinyl chloride storage tank, including tank body, the tank body is interior to be equipped with liquid, and floating has floating ball on the liquid, described
The top side of floating ball is fixedly installed with sliding bar, and the top of floating ball is equipped with the fixed link being fixedly mounted on the inner wall of tank body top side,
Cavity is offered in the fixed link, through-hole is offered on the bottom side inner wall of cavity, and through-hole is run through simultaneously in the top of the sliding bar
It extends in cavity, one end that sliding bar is located in cavity is fixedly installed with sliding panel, opens up that there are two sliding on the sliding panel
Hole, and two slide openings are symmetrical arranged based on sliding bar, slide bar are slidably fitted in the slide opening, and the both ends of slide bar all extend to
Outside slide opening, the both ends of the slide bar are respectively and fixedly installed on the top side and bottom side inner wall of cavity, and the top side of the sliding panel is solid
Dingan County is equipped with the first conducting block being located between two slide bars, and the top of the first conducting block, which is equipped with, to be fixedly mounted in cavity top side
The second conducting block on wall, and the first conducting block and the second conducting block are adapted, the bottom side of the sliding panel is fixedly installed with position
Third conducting block between two slide bars, the lower section of third conducting block are equipped with the be fixedly mounted on the inner wall of cavity bottom side the 4th
Conducting block, and third conducting block is adapted with the 4th conducting block.
Preferably, the top side of the sliding panel is fixedly installed with the spring being socketed on slide bar, and the top of the spring is solid
Dingan County is on the top side inner wall of cavity.
Preferably, the tank body is equipped with battery, the first alarm and the second alarm, the battery, the first report
Alert device, the first conducting block and the second conducting block are sequentially connected and constitute circuit, battery, the second alarm, third conducting block with
4th conducting block is sequentially connected and constitutes circuit.
Preferably, it is rolled on the through-hole surrounding inner wall and ball is installed, and ball and sliding bar are rolled and connected.
Preferably, sliding groove is offered on the two sides inner wall of the cavity, sliding shoe is slidably fitted in sliding groove, it is sliding
The side of motion block extends to outside sliding groove, and is fixedly mounted on sliding panel.
Preferably, sliding pearl slot is offered on the sliding groove inner wall, and sliding pearl, and sliding pearl are slidably fitted on sliding pearl slot inner wall
It is slidably connected with sliding shoe.
Compared with prior art, the utility model has the beneficial effects that
In the utility model, by tank body, liquid, floating ball, sliding bar, fixed link, cavity, through-hole, sliding panel, slide opening,
Slide bar, spring, the first conducting block, the second conducting block, sliding groove, sliding shoe are used cooperatively, in tank body when injection vinyl chloride, chloroethene
The liquid level of alkene rises, and liquid drives floating ball to move up, and floating ball drives sliding bar to slide in through-hole, and sliding bar, which drives, to be slided
Movable plate slides in cavity, and sliding panel drives sliding shoe to slide in sliding groove, and sliding panel drives slide opening and sliding bar, sliding
Movable plate squeezes spring, and sliding panel drives the first conducting block to be in contact with the second conducting block, battery, the first alarm, first
Conducting block and the second conducting block are sequentially connected and constitute circuit, and the first alarm is alarmed, can be convenient for prompting tank body in time
Interior liquid level is excessively high；It is used cooperatively by third conducting block, the 4th conducting block, liquid level decline, liquid drives floating ball to moving down
Dynamic, floating ball drives sliding bar to slide in through-hole, and sliding bar drives sliding panel to slide in cavity, and sliding panel drives sliding shoe to exist
Sliding in sliding groove, and sliding panel drives slide opening and sliding bar, spring squeezes sliding panel, and sliding panel drives third conducting block
It is in contact with the 4th conducting block, battery, the second alarm, third conducting block and the 4th conducting block are sequentially connected and constitute back
Road, the second alarm equipment alarm can be too low convenient for liquid level in prompting tank body in time；The utility model can be convenient for prompting tank in time
How high intracorporal liquid level is too low and, and structure is simple, easy to use.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of vinyl chloride storage tank structural schematic diagram；
Fig. 2 be the utility model proposes a kind of vinyl chloride storage tank Fig. 1 in part A structural schematic diagram.
In figure: 1 tank body, 2 liquid, 3 floating balls, 4 sliding bars, 5 fixed links, 6 cavitys, 7 through-holes, 8 sliding panels, 9 slide openings, 10 are slided
Bar, 11 springs, 12 first conducting blocks, 13 second conducting blocks, 14 third conducting blocks, 15 the 4th conducting blocks, 16 sliding grooves, 17 slidings
Block.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, a kind of vinyl chloride storage tank, including tank body 1, tank body 1 is interior to be equipped with liquid 2, and floating has floating ball on liquid 2
3, the top side of floating ball 3 is fixedly installed with sliding bar 4, and the top of floating ball 3 is equipped with and is fixedly mounted on consolidating on 1 top side inner wall of tank body
Fixed pole 5 offers cavity 6 in fixed link 5, and through-hole 7 is offered on the bottom side inner wall of cavity 6, and through-hole is run through on the top of sliding bar 4
It 7 and extends in cavity 6, one end that sliding bar 4 is located in cavity 6 is fixedly installed with sliding panel 8, offers two on sliding panel 8
A slide opening 9, and two slide openings 9 are symmetrical arranged based on sliding bar 4, and slide bar 10, and the both ends of slide bar 10 are slidably fitted in slide opening 9
It all extends to outside slide opening 9, the both ends of slide bar 10 are respectively and fixedly installed on the top side and bottom side inner wall of cavity 6, the top of sliding panel 8
Side is fixedly installed with the first conducting block 12 between two slide bars 10, and the top of the first conducting block 12, which is equipped with, to be fixedly mounted on
The second conducting block 13 on 6 top side inner wall of cavity, and the first conducting block 12 and the second conducting block 13 are adapted, the bottom of sliding panel 8
Side is fixedly installed with the third conducting block 14 between two slide bars 10, and the lower section of third conducting block 14, which is equipped with, to be fixedly mounted on
The 4th conducting block 15 on 6 bottom side inner wall of cavity, and third conducting block 14 is adapted with the 4th conducting block 15, passes through tank body 1, liquid
Body 2, floating ball 3, sliding bar 4, fixed link 5, cavity 6, through-hole 7, sliding panel 8, slide opening 9, slide bar 10, spring 11, the first conducting block
12, the second conducting block 13, sliding groove 16, sliding shoe 17 are used cooperatively, in tank body 1 when injection vinyl chloride, 2 liquid of liquid of vinyl chloride
Position rises, and liquid 2 drives floating ball 3 to move up, and floating ball 3 drives sliding bar 4 to slide in through-hole 7, and sliding bar 4 drives sliding panel
8 slide in cavity 6, and sliding panel 8 drives sliding shoe 17 to slide in sliding groove 16, and sliding panel 8 drives slide opening 9 and slide bar 10
Sliding, sliding panel 8 squeezes spring 11, and sliding panel 8 drives the first conducting block 12 to be in contact with the second conducting block 13, battery,
First alarm, the first conducting block 12 and the second conducting block 13 are sequentially connected and constitute circuit, and the first alarm is alarmed, energy
It is enough excessively high convenient for liquid level in prompting tank body 1 in time；It is used cooperatively by third conducting block 14, the 4th conducting block 15,2 liquid level of liquid
Decline, liquid 2 drive floating ball 3 to move down, and floating ball 3 drives sliding bar 4 to slide in through-hole 7, and sliding bar 4 drives sliding panel 8
It is slided in cavity 6, sliding panel 8 drives sliding shoe 17 to slide in sliding groove 16, and sliding panel 8 drives slide opening 9 and slide bar 10
Sliding, spring 11 squeezes sliding panel 8, and sliding panel 8 drives third conducting block 14 to be in contact with the 4th conducting block 15, battery,
Second alarm, third conducting block 14 and the 4th conducting block 15 are sequentially connected and constitute circuit, the second alarm equipment alarm, Neng Goubian
It is too low in liquid level in prompting tank body 1 in time；The utility model can be too low and how high convenient for the liquid level in prompting tank body 1 in time,
Structure is simple, easy to use.
The top side of sliding panel 8 is fixedly installed with the spring 11 being socketed on slide bar 10, and the top of spring 11 is fixedly mounted on
On the top side inner wall of cavity 6, tank body 1 be equipped with battery, the first alarm and the second alarm, battery, the first alarm,
First conducting block 12 and the second conducting block 13 are sequentially connected and constitute circuit, battery, the second alarm, third conducting block 14 with
4th conducting block 15 is sequentially connected and constitutes circuit, rolls on 7 surrounding inner wall of through-hole and is equipped with ball, and ball and sliding bar 4
Connection is rolled, sliding groove 16 is offered on the two sides inner wall of cavity 6, sliding shoe 17 is slidably fitted in sliding groove 16, is slided
The side of block 17 extends to outside sliding groove 16, and is fixedly mounted on sliding panel 8, and sliding pearl slot is offered on 16 inner wall of sliding groove,
It is slidably fitted with sliding pearl on sliding pearl slot inner wall, and sliding pearl is slidably connected with sliding shoe 17, by tank body 1, liquid 2, floating ball 3, slides
Lever 4, fixed link 5, cavity 6, through-hole 7, sliding panel 8, slide opening 9, slide bar 10, spring 11, the first conducting block 12, the second conducting block
13, sliding groove 16, sliding shoe 17 are used cooperatively, and in tank body 1 when injection vinyl chloride, 2 liquid level of liquid of vinyl chloride rises, liquid 2
Floating ball 3 is driven to move up, floating ball 3 drives sliding bar 4 to slide in through-hole 7, and sliding bar 4 drives sliding panel 8 sliding in cavity 6
Dynamic, sliding panel 8 drives sliding shoe 17 to slide in sliding groove 16, and sliding panel 8 drives slide opening 9 and slide bar 10 to slide, sliding panel 8
Spring 11 is squeezed, and sliding panel 8 drives the first conducting block 12 to be in contact with the second conducting block 13, battery, the first alarm, the
One conducting block 12 and the second conducting block 13 are sequentially connected and constitute circuit, and the first alarm is alarmed, and can be convenient for mentioning in time
Liquid level is excessively high in awake tank body 1；It is used cooperatively by third conducting block 14, the 4th conducting block 15, the decline of 2 liquid level of liquid, 2 band of liquid
Dynamic floating ball 3 moves down, and floating ball 3 drives sliding bar 4 to slide in through-hole 7, and sliding bar 4 drives sliding panel 8 sliding in cavity 6
Dynamic, sliding panel 8 drives sliding shoe 17 to slide in sliding groove 16, and sliding panel 8 drives slide opening 9 and slide bar 10 to slide, spring 11
Squeeze sliding panel 8, and sliding panel 8 drive third conducting block 14 be in contact with the 4th conducting block 15, battery, the second alarm,
Third conducting block 14 and the 4th conducting block 15 are sequentially connected and constitute circuit, and the second alarm equipment alarm can be convenient for prompting in time
Liquid level is too low in tank body 1；The utility model can be convenient for reminding the liquid level in tank body 1 too low and how high in time, and structure is simple, makes
With conveniently.
Working principle: in tank body 1 when injection vinyl chloride, 2 liquid level of liquid of vinyl chloride rises, and liquid 2 drives floating ball 3 upward
Mobile, floating ball 3 drives sliding bar 4 to slide in through-hole 7, and sliding bar 4 drives sliding panel 8 to slide in cavity 6,8 band of sliding panel
Dynamic sliding shoe 17 slides in sliding groove 16, and sliding panel 8 drives slide opening 9 and slide bar 10 to slide, and sliding panel 8 squeezes spring 11,
And sliding panel 8 drives the first conducting block 12 to be in contact with the second conducting block 13, battery, the first alarm, the first conducting block 12
It is sequentially connected and constitutes circuit with the second conducting block 13, the first alarm is alarmed, and is reached convenient for reminding liquid in tank body 1 in time
The excessively high purpose in position；The decline of 2 liquid level of liquid, liquid 2 drive floating ball 3 to move down, and floating ball 3 drives sliding bar 4 sliding in through-hole 7
Dynamic, sliding bar 4 drives sliding panel 8 to slide in cavity 6, and sliding panel 8 drives sliding shoe 17 to slide in sliding groove 16, and slides
Plate 8 drives slide opening 9 and slide bar 10 to slide, and spring 11 squeezes sliding panel 8, and sliding panel 8 drives third conducting block 14 to lead with the 4th
Electric block 15 is in contact, and battery, the second alarm, third conducting block 14 and the 4th conducting block 15 are sequentially connected and constitute circuit,
Second alarm equipment alarm achievees the purpose that convenient for reminding liquid level in tank body 1 too low in time.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (3)
1. a kind of vinyl chloride storage tank, including tank body (1), which is characterized in that be equipped with liquid (2) in the tank body (1), the liquid
(2) there is floating ball (3) floating on, the top side of the floating ball (3) is fixedly installed with sliding bar (4), and the top of floating ball (3) is equipped with admittedly
Dingan County is mounted in the fixed link (5) on the inner wall of tank body (1) top side, offers cavity (6) on the fixed link (5), the bottom of cavity (6)
It is offered on the inner wall of side through-hole (7), the top of the sliding bar (4) through through-hole (7) and extends in cavity (6), sliding bar
(4) one end being located in cavity (6) is fixedly installed with sliding panel (8), is opened up on the sliding panel (8) there are two slide opening (9), and
Two slide openings (9) are symmetrical arranged based on sliding bar (4), are slidably fitted with slide bar (10) in the slide opening (9), and slide bar (10)
Both ends all extend to slide opening (9) outside, and the both ends of the slide bar (10) are respectively and fixedly installed to top side and the bottom side inner wall of cavity (6)
On, the top side of the sliding panel (8) is fixedly installed with the first conducting block (12) between two slide bars (10), and first is conductive
The top of block (12) is equipped with the second conducting block (13) being fixedly mounted on the inner wall of cavity (6) top side, and the first conducting block (12)
It is adapted with the second conducting block (13), the bottom side of the sliding panel (8) is fixedly installed between two slide bars (10)
Three conducting blocks (14), the lower section of third conducting block (14) are equipped with the 4th conducting block being fixedly mounted on the inner wall of cavity (6) bottom side
(15), and third conducting block (14) is adapted with the 4th conducting block (15), and the top side of the sliding panel (8) is fixedly installed with socket
The top of spring (11) on slide bar (10), the spring (11) is fixedly mounted on the top side inner wall of cavity (6), the tank
Body (1) is equipped with battery, the first alarm and the second alarm, the battery, the first alarm, the first conducting block (12)
It is sequentially connected and constitutes circuit with the second conducting block (13), battery, the second alarm, third conducting block (14) and the 4th are conductive
Block (15) is sequentially connected and constitutes circuit, rolls on through-hole (7) the surrounding inner wall and is equipped with ball, and ball and sliding bar
(4) connection is rolled.
2. a kind of vinyl chloride storage tank according to claim 1, which is characterized in that on the two sides inner wall of the cavity (6)
It offers sliding groove (16), is slidably fitted with sliding shoe (17) in sliding groove (16), the side of sliding shoe (17) extends to sliding
Slot (16) outside, and is fixedly mounted on sliding panel (8).
3. a kind of vinyl chloride storage tank according to claim 2, which is characterized in that offered on sliding groove (16) inner wall
Sliding pearl slot is slided and is slidably fitted with sliding pearl on pearl slot inner wall, and sliding pearl is slidably connected with sliding shoe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821702115.5U CN209127380U (en) | 2018-10-19 | 2018-10-19 | A kind of vinyl chloride storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821702115.5U CN209127380U (en) | 2018-10-19 | 2018-10-19 | A kind of vinyl chloride storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209127380U true CN209127380U (en) | 2019-07-19 |
Family
ID=67232254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821702115.5U Expired - Fee Related CN209127380U (en) | 2018-10-19 | 2018-10-19 | A kind of vinyl chloride storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209127380U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882230A (en) * | 2021-11-09 | 2022-01-04 | 胡瑞军 | Pavement crack repairing device based on highway maintenance is used |
| CN114797207A (en) * | 2022-05-29 | 2022-07-29 | 亿缙机械(嘉兴)有限公司 | High-pressure constant-temperature filtering equipment with alarming and automatic scrap discharging functions |
| CN115164087A (en) * | 2022-07-13 | 2022-10-11 | 荆门宏图特种飞行器制造有限公司 | Storage tank and transport vechicle |
-
2018
- 2018-10-19 CN CN201821702115.5U patent/CN209127380U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882230A (en) * | 2021-11-09 | 2022-01-04 | 胡瑞军 | Pavement crack repairing device based on highway maintenance is used |
| CN113882230B (en) * | 2021-11-09 | 2023-10-13 | 广东鸿荣建工有限公司 | Pavement crack repairing device based on highway maintenance is used |
| CN114797207A (en) * | 2022-05-29 | 2022-07-29 | 亿缙机械(嘉兴)有限公司 | High-pressure constant-temperature filtering equipment with alarming and automatic scrap discharging functions |
| CN114797207B (en) * | 2022-05-29 | 2023-09-15 | 亿缙机械(嘉兴)有限公司 | High-pressure constant-temperature filtering equipment with alarming and self-chip removal functions |
| CN115164087A (en) * | 2022-07-13 | 2022-10-11 | 荆门宏图特种飞行器制造有限公司 | Storage tank and transport vechicle |
| CN115164087B (en) * | 2022-07-13 | 2024-06-04 | 荆门宏图特种飞行器制造有限公司 | Storage tank and transport vehicle |
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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 |
Granted publication date: 20190719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |