CN208928776U - A kind of tube cleaning arrangement easy to use - Google Patents
A kind of tube cleaning arrangement easy to use Download PDFInfo
- Publication number
- CN208928776U CN208928776U CN201821416607.8U CN201821416607U CN208928776U CN 208928776 U CN208928776 U CN 208928776U CN 201821416607 U CN201821416607 U CN 201821416607U CN 208928776 U CN208928776 U CN 208928776U
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- Prior art keywords
- fixedly connected
- hose
- cleaning
- importing
- cabinet
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Abstract
The utility model discloses a kind of tube cleaning arrangements easy to use, including cabinet, the bottom of cabinet wall is fixedly connected with first motor, the output shaft of first motor is fixedly connected with the first angular wheel, the surface of first angular wheel is engaged with the second angular wheel, it is fixedly connected with thread bush at the axle center of second angular wheel, the utility model relates to pipeline cleaning technical fields；The tube cleaning arrangement easy to use is easily introduced into hose and enters inside pipeline, improve boot speed, enable and imports the position that hose quickly reaches specified hose, hand grip is even more the usage comfort for improving user simultaneously, effectively pipeline inside dirt can be cleaned by the cleaning structure of rotation, the hairbrush of elasticity and spin cleaning sprayer, there is provided spray head enables the dirt inside pipeline to have dissolution, easy cleaning, improve cleaning rate and clean level, the effect for improving pipeline cleaning, ensures the cleaning quality of pipeline.
Description
Technical field
The utility model relates to pipeline cleaning technical field, specially a kind of tube cleaning arrangement easy to use.
Background technique
Cleaning air conditioner is the chief of the maintenance of air conditioner, air-conditioning maintenance, is conducive to improve refrigeration effect, advantageous to shorten
Temperature fall time, advantageous air conditioner energy saving is advantageous to extend air conditioner service life, is reasonable employment air-conditioning, reinforces the weight of standardized administration
Want component part；User paid attention to not enough air conditioner maintenance, cleaning in the past, this present field gradually has part people to start to pay attention to
Get up, promotes development of air conditioning industry, also ensured to air-conditioning service life and human health, simultaneously for the cleaning of air-conditioning duct
Device also becomes essential maintenance of equipment；
In real life, the existing cleaning device for air-conditioning duct and water supply pipe is mostly simple elongation
Tubule and hairbrush be combined with each other, and the structure that can go deep into inside pipeline carrying out manual hairbrush cleaning are formed, only simply by pipeline
Internal part dirt cleaning, cleaning efficiency is low, while the speed of Manual-cleaning is slower, the dirt particles after cleaning inside pipeline
It can not effectively be cleared up.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of tube cleaning arrangement easy to use, solves
Dirt particles after tube cleaning arrangement cleaning efficiency is low, cleaning speed is slow and cleaning inside pipeline can not be cleared up effectively
The problem of.
In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of pipeline easy to use
Cleaning device, including cabinet, the bottom of the cabinet wall are fixedly connected with first motor, and the output shaft of the first motor is solid
Surely it is connected with the first angular wheel, the surface of first angular wheel is engaged with the second angular wheel, second conical tooth
Thread bush is fixedly connected at the axle center of wheel, the both ends of the thread bush turn with the left side of cabinet wall and the right side of inner wall respectively
Dynamic connection, and the inner thread of thread bush is connected with importing hose, and it is mechanical close that first is provided on the right side of the importing hose
Sealing, the inside for importing hose are respectively arranged with penstock and exhaust tube, and the right end of the penstock is through importing hose
Right end and extend to import hose outside, and penstock extend to import hose outside one end be fixedly connected with hydraulic pressure
Case, the position on the penstock close to ager are provided with the first valve, and the right end of the exhaust tube is through importing hose
Right end and the outside for extending to importing hose, and exhaust tube extends to the one end imported outside hose and is fixedly connected with exhaust chamber,
Position on the exhaust tube close to exhaust chamber is provided with the second valve, and it is solid that the importing hose extends to one end on the left of cabinet
Surely it is connected with from turnning box, the second motor is fixedly connected on the right side of the rotation chamber interior wall, and the output shaft of the second motor is solid
Surely it is connected with first gear, the lower surface of the first gear is engaged with second gear, fixes at the axle center of the second gear
It is connected with asessory shaft, the left end of the asessory shaft is fixedly connected with rotation hose, and the brill section of the rotation hose runs through from turnning box
The left side of inner wall and extend to outside from turnning box, the rotation hose extend to be fixedly connected with from the surface outside turnning box it is viscous
The surface of attached cylinder, the adherency cylinder is fixedly connected with several springs, and the outer surface of the spring is socketed with telescopic, and spring
Top be fixedly connected with brush board, the upper surface of the brush board is fixedly connected with hairbrush, and adherency cylinder is located on the rotation hose
The position in left side is provided with the second mechanical sealing member, and the surface of second mechanical sealing member is respectively arranged with first jet and
Two nozzles, the left end of the rotation hose are fixedly connected with take-up means, and the bottom on the right side of the cabinet is fixedly connected with hand-held
Handle.
Further, the take-up means include receiving case, and the bottom for receiving chamber interior wall is fixedly connected with fixture block, and two
A fixture block is connected with mounting plate between opposite side, and several Anchored Bars, institute are fixedly connected at the top of the mounting plate
It states and receives the top of case two sides to offer to receive mouth, and the bottom of case two sides is received to be fixedly connected to auxiliary block, it is described
It receives and is fixedly connected with guide pad on the left of case.
Further, the both ends for importing hose extend through the two sides of cabinet and extend to the outside of cabinet, described
The outer surface for importing hose is provided with complementary screw-threads compatible with the screw thread of thread bush inner wall.
Further, the ager is internally provided with water pump, provides hydraulic pressure for the water flow inside penstock, and take out
Gas tank is internally provided with aspiration pump, to receive case to provide suction.
Further, the left end of the exhaust tube runs through the top for receiving case and extends to the inside for receiving case.
Further, one end of the first jet and second nozzle passes through the second mechanical sealing member and penstock is mutual
Connection, and when first jet and second nozzle are rotated to same point spout towards identical.
Further, the surface of the Anchored Bar is provided with multiple auxiliary rods, and auxiliary rod surface is adhesion arrangement, is made
Obtaining dirt can be adhered on Anchored Bar.
Compared with prior art, the utility model has the beneficial effects that
(1), the tube cleaning arrangement easy to use drives importing hose to enter inside pipeline, is assisting by motor
It with the help of block, is easily introduced into hose and enters inside pipeline, while improving boot speed, importing hose is quickly reached
The position of specified hose, while hand grip is even more the usage comfort for improving user.
(2), the tube cleaning arrangement easy to use is cleaned by the cleaning structure of rotation, the hairbrush of elasticity and spin
Spray head can effectively clean pipeline inside dirt, provide spray head and the dirt inside pipeline is enabled to have dissolution, convenient
Cleaning improves cleaning rate and clean level.
(3), the tube cleaning arrangement easy to use, it is auxiliary by receiving case to carry out second adsorption to the dirt after cleaning
It helps adherency cylinder to adsorb the residue after cleaning, improves the effect of pipeline cleaning, ensure the cleaning quality of pipeline.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model rotation box part structural schematic diagram；
The position Fig. 3 the utility model take-up means structural schematic diagram.
In figure: 1- cabinet, 2- first motor, the first angular wheel of 3-, the second angular wheel of 4-, 5- thread bush, 6- are imported
Hose, the first mechanical sealing member of 7-, 8- penstock, 9- exhaust tube, 10- ager, 11- exhaust chamber, the first valve of 12-, 13-
Two valves, 14- from turnning box, 140- rotation hose, the second motor of 15-, 16- first gear, 17- second gear, 18- asessory shaft,
19- adheres to cylinder, 20- spring, 21- telescopic, 22- brush board, 23- hairbrush, the second mechanical sealing member of 24-, 25- first jet, 26-
Second nozzle, 27- take-up means, 271- receive case, 272- fixture block, 273- mounting plate, 274- Anchored Bar, 275- receive mouth,
276- auxiliary block, 28- guide pad, 29- hand grip.
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.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of tube cleaning arrangement easy to use, packet
Cabinet 1 is included, the bottom of 1 inner wall of cabinet is fixedly connected with first motor 2, and the output shaft of first motor 2 is fixedly connected with the first cone
Shape gear 3, the surface of the first angular wheel 3 are engaged with the second angular wheel 4, are fixedly connected at the axle center of the second angular wheel 4
There is thread bush 5, is hollow structure inside thread bush 5, and screw thread is distributed in the inner surface of thread bush 5, the both ends point of thread bush 5
It is not rotatablely connected with the left side of 1 inner wall of cabinet and the right side of inner wall, and the inner thread of thread bush 5 is connected with and imports hose 6,
The rotation of thread bush 5 drives importing hose 6 to be moved left and right, to reach the disengaging power of pipeline, imports the both ends of hose 6
It extends through the two sides of cabinet 1 and extends to the outside of cabinet 1, the outer surface for importing hose 6 is provided with and 5 inner wall of thread bush
The compatible complementary screw-threads of screw thread, the right side for importing hose 6 are provided with the first mechanical sealing member 7, are made by mechanical sealing member 7
The left part for importing hose 6 can be rotated, and the inside for importing hose 6 is respectively arranged with penstock 8 and exhaust tube 9, be taken out
The left end of tracheae 9 runs through the top for receiving case 271 and extends to the inside for receiving case 271, and the right end of penstock 8 is soft through importing
The right end of pipe 6 and the outside for extending to importing hose 6, and penstock 8 extends to the one end imported outside hose 6 and is fixedly connected
Ager 10, ager 10 are internally provided with water pump, provide hydraulic pressure for the water flow inside penstock 8, and water pump is another
End is connected with water tank, and water tank can be added cleaning solution or water, and the position of close ager 10 is provided with the on penstock 8
One valve 12, the first valve 12 can control whether water flow enters penstock 8, and the right end of exhaust tube 9 is through the right side for importing hose 6
The outside for importing hose 6 is held and extends to, and exhaust tube 9 extends to the one end imported outside hose 6 and is fixedly connected with exhaust chamber
11, and exhaust chamber 11 is internally provided with aspiration pump, to receive case 271 to provide suction, the junction of aspiration pump and exhaust tube 9
It is provided with filter screen, prevents dirt extraction from impacting to aspiration pump inside, is arranged on exhaust tube 9 close to the position of exhaust chamber 11
There is the second valve 13, the second valve 13 can control the disengaging of air-flow, imports one end that hose 6 extends on the left of cabinet 1 and fixes
It is connected with from turnning box 14, the second motor 15, and the output shaft of the second motor 15 is fixedly connected with from the right side of 14 inner wall of turnning box
It is fixedly connected with first gear 16, the lower surface of first gear 16 is engaged with second gear 17, consolidates at the axle center of second gear 17
Surely it is connected with asessory shaft 18, the inside of asessory shaft 18 is hollow structure, and penstock 8 and exhaust tube 9 are from the inside of asessory shaft 18
The inside of rotation hose 140 is extended to, the left end of asessory shaft 18 is fixedly connected with rotation hose 140, the brill section of rotation hose 140
Through the left side from 14 inner wall of turnning box and outside from turnning box 14 is extended to, rotation hose 140 is extended to from outside turnning box 14
Surface is fixedly connected with adherency cylinder 19, and the surface of adherency cylinder 19 has strong adhesion, and the dirt after capable of effectively adhering to cleaning glues
The surface of attached cylinder 19 is fixedly connected with several springs 20, and the outer surface of spring 20 is socketed with telescopic 21, and the top of spring 20
Portion is fixedly connected with brush board 22, and the upper surface of brush board 22 is fixedly connected with hairbrush 23, and flexible hairbrush 23 is adapted to different knots
The pipeline of structure, the position that 19 left side of adherency cylinder is located at so that the fitness of cleaning device is stronger, on rotation hose 140 are provided with the
Two mechanical sealing members 24, the surface of the second mechanical sealing member 24 are respectively arranged with first jet 25 and second nozzle 26, the first spray
One end of mouth 25 and second nozzle 26 passes through the second mechanical sealing member 24 and is interconnected with penstock 8, and first jet 25
When with the rotation of second nozzle 26 to same point spout towards identical, the spout of first jet 25 and second nozzle 26 is to incline
Biassed fabric enables first jet 25 in the presence of hydraulic pressure and second nozzle 26 to carry out certainly by the second mechanical sealing member 24
Turn, uniform hydraulic pressure flushing is carried out to pipeline inside, the left end of rotation hose 140 is fixedly connected with take-up means 27, take-up means
27 include receiving case 271, and the bottom of 271 inner wall of case is received to be fixedly connected with fixture block 272, the opposite side of two fixture blocks 272 it
Between be connected with mounting plate 273, the top of mounting plate 273 is fixedly connected with several Anchored Bars 274, the surface setting of Anchored Bar 274
There are multiple auxiliary rods, and auxiliary rod surface is adhesion arrangement, and dirt is adhered on Anchored Bar 274, case 271 is received
The top of two sides, which offers, receives mouth 275, and the bottom of 271 two sides of case is received to be fixedly connected to auxiliary block 276, receives
The left side of case 271 is fixedly connected with guide pad 28, and the bottom on 1 right side of cabinet is fixedly connected with hand grip 29.
When work, hand grip 29 is held, by 28 align with tube entrance of guide pad, starts first motor 2, first motor 2
The first angular wheel 3 is driven to rotate synchronously, the first tapered gear 3 drives the second tapered gear 4 to rotate synchronously, the second angular wheel
Thread bush 5 rotates synchronously under 4 drive, imports hose 6 and rotates under the action of thread bush 5 and go deep into inside pipeline, opens hydraulic pressure
Water pump and the first valve 12 inside case 10, so that water flow enters first jet 25 and second nozzle 26 by penstock 8, to pipe
It is rinsed inside road, while opening the second motor 15, so that the second motor 15 drives first gear 16 to rotate, first gear 16
Second gear 17 is driven to rotate synchronously, second gear 17 drives asessory shaft 18 to rotate synchronously, so that rotation hose 140 follows auxiliary
Axis 18 rotates, so that the hairbrush 23 on adherency cylinder 19 be driven to carry out rotary-cleaning, the air pump inside exhaust chamber 11 is opened after cleaning
With the second valve 13, so that exhaust tube 9 is to receive to provide suction inside case 271, remaining dirt passes through under the action of suction
Anchored Bar 274 is adhered to its surface, so that the better effect of cleaning.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (7)
1. a kind of tube cleaning arrangement easy to use, including cabinet (1), it is characterised in that: the bottom of cabinet (1) inner wall
It being fixedly connected with first motor (2), the output shaft of the first motor (2) is fixedly connected with the first angular wheel (3), and described
The surface of one angular wheel (3) is engaged with the second angular wheel (4), is fixedly connected at the axle center of second angular wheel (4)
Having thread bush (5), the both ends of the thread bush (5) are rotatablely connected with the left side of cabinet (1) inner wall and the right side of inner wall respectively, and
And the inner thread of thread bush (5) is connected with and imports hose (6), and it is mechanical close that first is provided on the right side of the importing hose (6)
Sealing (7), the inside for importing hose (6) are respectively arranged with penstock (8) and exhaust tube (9), the right side of the penstock (8)
End runs through the right end for importing hose (6) and extends to the outside for importing hose (6), and penstock (8) extends to importing hose
(6) external one end is fixedly connected ager (10), and the position on the penstock (8) close to ager (10) is provided with first
Valve (12), the right end of the exhaust tube (9) run through the right end for importing hose (6) and extend to the outside for importing hose (6), and
And exhaust tube (9) extends to the external one end of importing hose (6) and is fixedly connected exhaust chamber (11), it is close on the exhaust tube (9)
The position of exhaust chamber (11) is provided with the second valve (13), and one end that importing hose (6) extends on the left of cabinet (1) is fixed
It is connected with from turnning box (14), it is described to be fixedly connected with the second motor (15) from the right side of turnning box (14) inner wall, and the second motor
(15) output shaft is fixedly connected with first gear (16), and the lower surface of the first gear (16) is engaged with second gear
(17), it is fixedly connected with asessory shaft (18) at the axle center of the second gear (17), the left end of the asessory shaft (18) is fixed to be connected
It is connected to rotation hose (140), the brill section of the rotation hose (140) runs through the left side from turnning box (14) inner wall and extends to rotation
The outside of case (14), the rotation hose (140) extend to from the external surface of turnning box (14) and are fixedly connected with adherency cylinder (19),
The surface of adherency cylinder (19) is fixedly connected with several springs (20), and the outer surface of the spring (20) is socketed with telescopic
(21), it and at the top of spring (20) is fixedly connected with brush board (22), the upper surface of the brush board (22) is fixedly connected with hairbrush
(23), the position on the left of adherency cylinder (19) is located on the rotation hose (140) to be provided with the second mechanical sealing member (24), it is described
The surface of second mechanical sealing member (24) is respectively arranged with first jet (25) and second nozzle (26), the rotation hose
(140) left end is fixedly connected with take-up means (27), and the bottom on the right side of the cabinet (1) is fixedly connected with hand grip
(29).
2. a kind of tube cleaning arrangement easy to use according to claim 1, it is characterised in that: the take-up means
It (27) include receiving case (271), the bottom for receiving case (271) inner wall is fixedly connected with fixture block (272), two fixture blocks
(272) it is connected between opposite side mounting plate (273), is fixedly connected with several attachments at the top of the mounting plate (273)
Bar (274), the top for receiving case (271) two sides offer the bottom received mouth (275), and receive case (271) two sides
Portion is fixedly connected to auxiliary block (276), and described receive is fixedly connected with guide pad (28) on the left of case (271).
3. a kind of tube cleaning arrangement easy to use according to claim 1, it is characterised in that: the importing hose
(6) both ends extend through the two sides of cabinet (1) and extend to the outside of cabinet (1), and the outer surface for importing hose (6) is set
It is equipped with complementary screw-threads compatible with the screw thread of thread bush (5) inner wall.
4. a kind of tube cleaning arrangement easy to use according to claim 1, it is characterised in that: the ager (10)
Be internally provided with water pump, for the internal water flow of penstock (8) provide hydraulic pressure, and exhaust chamber (11) is internally provided with pumping
Pump, to receive case (271) to provide suction.
5. a kind of tube cleaning arrangement easy to use according to claim 1, it is characterised in that: the exhaust tube (9)
Left end run through receive case (271) top and extend to the inside for receiving case (271).
6. a kind of tube cleaning arrangement easy to use according to claim 1, it is characterised in that: the first jet
(25) pass through the second mechanical sealing member (24) and penstock (8) with one end of second nozzle (26) and be interconnected, and first
Spout towards identical when nozzle (25) and second nozzle (26) rotation are to same point.
7. a kind of tube cleaning arrangement easy to use according to claim 2, it is characterised in that: the Anchored Bar
(274) surface is provided with multiple auxiliary rods, and auxiliary rod surface is adhesion arrangement, and dirt is enabled to be adhered to Anchored Bar
(274) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821416607.8U CN208928776U (en) | 2018-08-31 | 2018-08-31 | A kind of tube cleaning arrangement easy to use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821416607.8U CN208928776U (en) | 2018-08-31 | 2018-08-31 | A kind of tube cleaning arrangement easy to use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208928776U true CN208928776U (en) | 2019-06-04 |
Family
ID=66719365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821416607.8U Expired - Fee Related CN208928776U (en) | 2018-08-31 | 2018-08-31 | A kind of tube cleaning arrangement easy to use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208928776U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530857A (en) * | 2020-05-09 | 2020-08-14 | 太原科技大学 | Carbon deposit eliminating device for methane production equipment based on synthesis gas |
| CN112275747A (en) * | 2020-10-12 | 2021-01-29 | 吉安市海洲医药化工有限公司 | Reaction kettle cleaning device |
| CN112756346A (en) * | 2020-12-28 | 2021-05-07 | 澧县荣友沥青混凝土有限责任公司 | Cement scale deposit cleaning device that cement manufacture used |
| CN113172051A (en) * | 2021-04-26 | 2021-07-27 | 杨犇 | Hydraulic engineering pipeline equipment of removing obstacles |
| CN113182290A (en) * | 2021-05-29 | 2021-07-30 | 赵云峰 | Municipal administration elasticity elongated tube inner wall cleaning device |
| CN113787035A (en) * | 2021-09-29 | 2021-12-14 | 广西玉柴机器股份有限公司 | Engine workpiece deep hole cleaning and recovering device |
| CN113843232A (en) * | 2021-09-30 | 2021-12-28 | 辛少杰 | Pier is pour steel and is protected a clear device of scraping of section of thick bamboo inner wall |
| CN117815755A (en) * | 2024-03-04 | 2024-04-05 | 烟台正方制药有限公司 | Filtering device for extracting traditional Chinese medicine |
-
2018
- 2018-08-31 CN CN201821416607.8U patent/CN208928776U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530857A (en) * | 2020-05-09 | 2020-08-14 | 太原科技大学 | Carbon deposit eliminating device for methane production equipment based on synthesis gas |
| CN112275747A (en) * | 2020-10-12 | 2021-01-29 | 吉安市海洲医药化工有限公司 | Reaction kettle cleaning device |
| CN112756346A (en) * | 2020-12-28 | 2021-05-07 | 澧县荣友沥青混凝土有限责任公司 | Cement scale deposit cleaning device that cement manufacture used |
| CN112756346B (en) * | 2020-12-28 | 2022-05-31 | 德清南方水泥有限公司 | Cement scale deposit cleaning device that cement manufacture used |
| CN113172051A (en) * | 2021-04-26 | 2021-07-27 | 杨犇 | Hydraulic engineering pipeline equipment of removing obstacles |
| CN113182290A (en) * | 2021-05-29 | 2021-07-30 | 赵云峰 | Municipal administration elasticity elongated tube inner wall cleaning device |
| CN113787035A (en) * | 2021-09-29 | 2021-12-14 | 广西玉柴机器股份有限公司 | Engine workpiece deep hole cleaning and recovering device |
| CN113843232A (en) * | 2021-09-30 | 2021-12-28 | 辛少杰 | Pier is pour steel and is protected a clear device of scraping of section of thick bamboo inner wall |
| CN117815755A (en) * | 2024-03-04 | 2024-04-05 | 烟台正方制药有限公司 | Filtering device for extracting traditional Chinese medicine |
| CN117815755B (en) * | 2024-03-04 | 2024-04-30 | 烟台正方制药有限公司 | Filtering device for extracting traditional Chinese medicine |
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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: 20190604 Termination date: 20210831 |