CN206008868U - A kind of hot air circulation powder selection device with back-blowing sealing structure - Google Patents
A kind of hot air circulation powder selection device with back-blowing sealing structure Download PDFInfo
- Publication number
- CN206008868U CN206008868U CN201620714496.3U CN201620714496U CN206008868U CN 206008868 U CN206008868 U CN 206008868U CN 201620714496 U CN201620714496 U CN 201620714496U CN 206008868 U CN206008868 U CN 206008868U
- Authority
- CN
- China
- Prior art keywords
- roller mill
- selection device
- blower
- rotation cage
- blowing
- 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
Links
- 239000000843 powder Substances 0.000 title claims abstract description 34
- 238000007664 blowing Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 239000012716 precipitator Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 40
- 229910052757 nitrogen Inorganic materials 0.000 description 20
- 238000000227 grinding Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002775 capsule Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- -1 clinker Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
Abstract
The utility model discloses a kind of hot air circulation powder selection device with back-blowing sealing structure, including the back-blowing sealing structure of hot air circulation powder selection device and powder selection device.The utility model is after dust-precipitator gathers dust, hot blast proceeds to again warm-air pipe by blower fan and is circulated utilization, so as to improve the utilization rate of heat energy, its directly discharge impact surrounding enviroment are prevented from simultaneously, sealed by the blower with blowing mouth, so that material below powder selection device cannot be passed through from the gap between rotation cage and roller mill inwall, such sealing means not only good sealing effect, and do not interfere with the rotation of rotation cage completely.
Description
Technical field
The utility model is related to a kind of hot air circulation powder selection device with back-blowing sealing structure.
Background technology
Vertical roll grinder abbreviation Vertical Mill, a kind of for the processing of cement slurry, clinker, slag and cinder grinding, have
The characteristics of simple structure, low manufacturing cost and use cost.Including body, millstone device and transmission device, body and millstone device it
Between be provided with the adjective-centre structure for determining the centre of gyration, the bottom of millstone device is fixedly installed circular guideway, and millstone device passes through
Circular guideway is rotatable to be supported on body, and millstone device is connected with drive.As transmission device is not subject to mill
Weight and the high axial load such as pressure of milling, therefore transmission device can adopt general reductor, so as to tight with structure configuration
Gather, the advantage of reliable operation, can shorten and stop consuming time, reduce equipment operation and maintenance cost.
Vertical roll grinder operation principle：Motor is rotated by reductor band movable grinding disc, and material is through lock feeding device from entering
Material mouth falls in mill central authorities, while hot blast is entered in mill from air inlet.With mill rotate, material under the action of the centrifugal force, to
Mill edge is moved, and is rolled by grinding roller on the mill and crush during cannelure, and crushing rear material is at mill edge by vane
High velocity air takes up, and bulky grain falls directly on mill grinding again, and in air-flow, material turns in rotation when Upper separator
Under son effect, meal falls mill grinding again from cone bucket, and qualified fine powder is gone out mill with air-flow, collected by dust arrester installation,
As product, containing moisture material with thermal current contact process in be oven-dried, by adjusting hot blast temperature, DIFFERENT WET can be met
Degree material requirement, reaches required product moisture.By adjusting separator, fineness degree needed for different product is can reach.
After material is ground by roller mill, need to select the product entrance hot-blast outlet of suitable thickness to go out by powder selection device
Material, as rotation cage top outer and the inwall of roller mill of powder selection device have certain gap all the time, material is in hot blast
Drive the lower gap that can pass through to enter hot-blast outlet, so as to avoided rotate cage select powder step, and then the matter that can affect to select powder
Amount.
Through selecting the material of powder to need to be absorbed by dust-precipitator, after dust-precipitator absorbs, by the heat that discharges in roller mill
There is larger heat in wind, if the heat is directly discharged in air, not only waste a part of heat energy, while can also pollute
Air, long-time discharge affect the environment of periphery.
Utility model content
For the problems referred to above, the utility model selects powder to fill there is provided a kind of hot air circulation with back-blowing sealing structure
Put, by arranging back-blowing structure on the gap in rotation cage with roller mill inwall, so as to prevent material from being tapped into by the direct clearance
Enter hot-blast outlet discharging, effectively increase rotation cage selects silty amount, is circulated by the hot blast after to gathering dust through dust-precipitator
Utilize, so as to improve heat utilization rate, prevent heat energy from having adverse effect on environment.
The technical solution adopted in the utility model is：
A kind of hot air circulation powder selection device with back-blowing sealing structure, the powder that selects including being arranged in roller mill are filled
Put, warm-air pipe of the roller mill bottom on the outside of mill, the hot-blast outlet at the top of roller mill above the powder selection device, described hot blast
Outlet is connected with a dust-precipitator, and the gas outlet of the dust-precipitator is connected with warm-air pipe by pipeline, described dust-precipitator and hot blast
A blower fan that hot blast is blowed to warm-air pipe from dust-precipitator is provided between pipe, and described powder selection device includes rotating cage, and
The inner cone coaxial with rotation cage below fixed rotation cage, the thicker one end of the inner cone straight with diameter greater than rotation cage
Footpath, and the thicker one end of inner cone one end upward, thinner is down, the rotary shaft in the vertical direction of the rotation cage, described
Roller mill is fixed with a circle blower in the interstitial site between the top outer of rotation cage and the inwall of roller mill, described blows
The blowing mouth down of airduct, the air inlet of the blower are connected with an air pump.
After dust-precipitator gathers dust, hot blast proceeds to again warm-air pipe by blower fan and is circulated utilization such that it is able to improve
The utilization rate of heat energy, while being prevented from its directly discharge impact surrounding enviroment, is carried out by the blower with blowing mouth close
Envelope so that the material below powder selection device cannot be passed through from the gap between rotation cage and roller mill inwall, such sealing side
Formula not only good sealing effect, and do not interfere with the rotation of rotation cage completely.
Preferably, described rotation cage includes upper ring and a lower ring, and the multiple supports for supporting the upper ring of connection and lower ring
Bar, the middle part of the rotation cage is up/down perforation, and described inner cone is the hollow round table for waiting wall thickness, the hollow round table upper
Lower insertion, the bottom of the inner cone are fixedly and coaxially connected the torus of a up/down perforation, and described blower is located at upper
The top of ring, described blower are fixed together with the inwall of roller mill, and the external diameter of the blower is ground with roller more than upper ring
Spacing between machine inwall, the diameter of the blowing eye are not more than the spacing rotated between cage top outer and roller mill inwall.
After grinding, qualified product is blown to rotate the cambered surface of cage to material by hot blast along the outer wall of inner cone
Outward, when cage rotation is rotated, product is upwardly into hot-blast outlet through the gap support bar, and enters in dust-precipitator, leads to
The rotating speed of control rotation cage is crossed, the product of different thicknesses degree can be selected, rotating speed is faster, and the product of selection is thinner, and rotating speed is slower,
The product of selection is thicker.
When rotated, the material of suitable size enters rotation cage by the gap between support bar to rotation cage, and is blown to
Hot-blast outlet, the underproof material of some of them fineness degree is due to the effect of self gravitation.Inner cone is fallen into from below rotation cage
In body, and dropped by torus and proceed grinding, blower external diameter more than the spacing between upper ring and roller mill inwall, from
And ensure that blower can be fully sealed to rotating the gap between the top outer of cage and the inwall of roller mill, close so as to be lifted
Envelope effect, uniform blowing eye uniform blow gas can be sealed downwards, improve the stability of sealing, reach without dead angle
Purpose.
Preferably, being installed with a rotation cage motor for driving rotation cage to rotate at the top of the roller mill.
The utility model beneficial effect has：
After dust-precipitator gathers dust, hot blast proceeds to again warm-air pipe by blower fan and is circulated utilization such that it is able to improve
The utilization rate of heat energy, while being prevented from its directly discharge impact surrounding enviroment, is carried out by the blower with blowing mouth close
Envelope so that the material below powder selection device cannot be passed through from the gap between rotation cage and roller mill inwall, such sealing side
Formula not only good sealing effect, and do not interfere with the rotation of rotation cage completely.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Side structure schematic diagrams of the Fig. 2 for Fig. 1；
Structural representations of the Fig. 3 for clamping rings；
In figure：1. roller mill, 2. mill, 3. warm-air pipe, 4. hot-blast outlet, 5. rotates cage, 6. inner cone, 7. blower,
8. clamping rings, 9. ventilating opening, 10. adjustable plate, 11. grinding rollers, 12. cranks, 13. oil hydraulic cylinders, 14. knock-pins, 15. oil inlet pipes
Road, 16. nitrogen pipelines, 17. elevated pressure nitrogen air bag groups, 18. low pressure nitrogen air bag groups, 19. low pressure oil inlet valves, 20. high pressure inlet valves
Door, 21. nitrogen valves, 22. rotating shafts, ring on 23., 24. times rings, 25. support bars, 26. torus, 27. pins, 28. pin holes,
29. latch bodies, 30. compression springs, 31. rotation cage motors.
Specific embodiment
Below by specific embodiment and combine accompanying drawing the utility model is described in further detail.
Embodiment 1
As shown in Figure 1, 2, a kind of hot air circulation powder selection device with back-blowing sealing structure, including being arranged on roller mill
Powder selection device in 1, warm-air pipe 3 of 1 bottom of roller mill on the outside of mill 2, the hot blast at the top of roller mill 1 above the powder selection device
Outlet 4, described hot-blast outlet 4 is connected with a dust-precipitator, and the gas outlet of the dust-precipitator is connected with warm-air pipe 3 by pipeline,
A blower fan that hot blast is blowed to warm-air pipe 3 from dust-precipitator is provided between described dust-precipitator and warm-air pipe 3, and described selects powder
Device includes rotating coaxial with rotation cage 5 inner cone 6 below cage 5, and fixed rotation cage 5, and the inner cone 6 is thicker
The diameter with diameter greater than rotation cage 5 of one end, and the thicker one end of inner cone one end upward, thinner is down, the rotation cage 5
Rotary shaft in the vertical direction, the roller mill 1 rotation cage 5 top outer and the inwall of roller mill 1 between gap
A circle blower 7, the blowing mouth down of the blower 7, the air inlet of the blower 7 and an air pump phase is fixed with position
Even.
Described rotation cage 5 includes ring 23 and lower ring 24, and the multiple supports for supporting the upper ring 23 of connection and lower ring 24
Bar 25, the middle part of the rotation cage 5 is up/down perforation, and described inner cone 6 is for waiting the hollow round table of wall thickness, the hollow round table
Up/down perforation, the bottom of the inner cone 6 is fixedly and coaxially connected the torus 26 of a up/down perforation, described blower
7 tops for being located at upper ring 23, described blower 7 are fixed together with the inwall of roller mill 1, and the external diameter of the blower 7 is big
Spacing between 1 inwall of upper ring 23 and roller mill, described blowing mouth are the circle blowing eye for being distributed on 7 bottom of blower,
The diameter of the blowing eye is not more than the spacing rotated between 1 inwall of 5 top outer of cage and roller mill.
The top of the roller mill 1 is installed with a rotation cage motor 31 for driving rotation cage 5 to rotate.
Embodiment 2
As shown in Figure 1, 2, 3, the adjustable hot air circulation roll mill apparatus of a kind of grinding roller pressure of back-blowing sealing, its feature
It is, including the powder selection device being arranged in roller mill 1, warm-air pipe 3 of 1 bottom of roller mill on the outside of mill 2, roller mill 1 are pushed up
Hot-blast outlet 4 of the portion above powder selection device, described hot-blast outlet 4 are connected with a dust-precipitator, the gas outlet of the dust-precipitator
Be connected with warm-air pipe 3 by pipeline, one is provided between described dust-precipitator and warm-air pipe 3 hot blast is blowed to heat from dust-precipitator
The blower fan of airduct 3, described powder selection device include rotating coaxial with rotation cage 5 interior below cage 5, and fixed rotation cage 5
Cone 6, the thicker one end of the inner cone 6 with diameter greater than rotation cage 5 diameter, and the thicker one end of inner cone 6 upward, compared with
Thin one end down, described rotation cage 5 rotary shaft in the vertical direction, the roller mill 1 rotation cage 5 top outer with
It is fixed with a circle blower 7 in interstitial site between the inwall of roller mill 1, the blowing mouth down of the blower 7 described blows
The air inlet of airduct 7 is connected with an air pump, and circle fixed by the circle that is provided between 1 inwall of mill 2 and roller mill in roller mill 1
Ring 8, the warm-air pipe 4 of the roller mill 1 are located at the lower section of clamping rings 8, the outside cambered surface of the clamping rings 8 and roller mill 1
Inwall fit fixation, leave gap between the inner side cambered surface of the clamping rings 8 and the outside cambered surface of mill 2, described
Multiple circumferentially uniform ventilating openings 9 are offered on clamping rings 8, be fixed with and rotate with clamping rings 8 on described ventilating opening 9
The adjustable plate 10 of connection；Also include grinding roller 11 and drive the crank 12 of 11 rotation of grinding roller, the crank 12 is relative to powder
The other end of grinding roller 11 is connected with the knock-pin 14 of 13 front end of an oil hydraulic cylinder, and described oil hydraulic cylinder 13 passes through two inflow pipelines 15
It is connected with the gas outlet of two groups of nitrogen capsules respectively, the gas outlet of two groups of nitrogen capsules is connected by nitrogen pipeline 16, institute
The two groups of nitrogen capsules that states are the different elevated pressure nitrogen air bag group 17 of pressure and low pressure nitrogen air bag group 18, described and elevated pressure nitrogen air bag group 17
A high pressure oil inlet valve 20, the oil-feed being connected with low pressure nitrogen air bag group 18 is in series with the inflow pipeline 15 being connected
A low pressure oil inlet valve 19 is in series with pipeline 15, and described nitrogen pipeline 16 is in series with a nitrogen valve 21.
Described ventilating opening 9 body in a ring, the radian of the annular solid is 10-100 °, the shape of the adjustable plate 10 with
Ventilating opening 9 matches, and the adjustable plate 10 is radially fixed with a rotating shaft 22 in clamping rings 8, on described clamping rings 8
The shaft hole for matching with rotating shaft 22 for a pair is offered, described blowing mouth is the circle blowing eye for being distributed on 7 bottom of blower,
The diameter of the blowing eye is not more than the spacing rotated between 1 inwall of 5 top outer of cage and roller mill, described elevated pressure nitrogen air bag
Group 17 includes that the elevated pressure nitrogen air bag that two gas outlets are connected, described low pressure nitrogen air bag group 18 include that two gas outlets are connected
Low pressure nitrogen air bag.
Described rotation cage 5 includes ring 23 and lower ring 24, and the multiple supports for supporting the upper ring 23 of connection and lower ring 24
Bar 25, the middle part of the rotation cage 5 is up/down perforation, and described inner cone 6 is for waiting the hollow round table of wall thickness, the hollow round table
Up/down perforation, the bottom of the inner cone 6 is fixedly and coaxially connected the torus 26 of a up/down perforation, described ventilating opening
Be fixed with a pin 27 in one end of adjustable plate 10 in 9, the pin 27 in clamping rings 8 radially, the pin 27
Peak of the minimum point less than rotating shaft 22, the clamping rings 8 offers multiple pin holes 28 in the top of rotating shaft 22, described
Pin hole 28 is matched with a latch, and the gas outlet of described elevated pressure nitrogen air bag and low pressure nitrogen air bag is all down.
Described latch includes latch body 29, and is fixed on the compression spring 30 of 29 one end of latch body, the pressure
One end of contracting spring 30 is fixedly connected with latch body 29, and the other end is towards the end being close with latch body 29, described slotting
The length of pin body 29 less than the length diametrically of clamping rings 8, be more than the length diametrically of ventilating opening 9, described blows
Airduct 7 is located at the top of upper ring 23, and described blower 7 is fixed together with the inwall of roller mill 1, outside the blower 7
Footpath is installed with one and drives rotation cage more than the spacing between 1 inwall of upper ring 23 and roller mill, the top of the roller mill 1
The 5 rotation cage motors 31 for rotating.
Claims (3)
1. a kind of hot air circulation powder selection device with back-blowing sealing structure, it is characterised in that including being arranged on roller mill (1)
Interior powder selection device, warm-air pipe (3) of roller mill (1) bottom on the outside of mill (2), at the top of roller mill (1) on powder selection device
The hot-blast outlet (4) of side, described hot-blast outlet (4) is connected with a dust-precipitator, the gas outlet of the dust-precipitator by pipeline and
Warm-air pipe (3) is connected, and is provided with one hot blast is blowed to warm-air pipe from dust-precipitator between described dust-precipitator and warm-air pipe (3)
(3) blower fan, described powder selection device include coaxial with rotation cage (5) below rotation cage (5), and fixed rotation cage (5)
Inner cone (6), inner cone (6) thicker one end with diameter greater than rotation cage (5) diameter, and inner cone thicker one
Down, the rotary shaft in the vertical direction of rotation cage (5), roller mill (1) are rotating cage for end one end upward, thinner
(5) in the interstitial site between top outer and the inwall of roller mill (1), a circle blower (7), the blower are fixed with
(7) blowing mouth down, the air inlet of blower (7) are connected with an air pump.
2. a kind of hot air circulation powder selection device with back-blowing sealing structure according to claim 1, it is characterised in that
Described rotation cage (5) includes upper ring (23) and lower ring (24), and support the upper ring (23) of connection and lower ring (24) multiple
Strut (25), the middle part of rotation cage (5) is up/down perforation, and described inner cone (6) is the hollow round table for waiting wall thickness, described
The up/down perforation of hollow round table, the bottom of inner cone (6) are fixedly and coaxially connected the torus (26) of a up/down perforation,
Described blower (7) is located at the top of upper ring (23), and described blower (7) is fixed together with the inwall of roller mill (1),
The external diameter of blower (7) is to be distributed on more than the spacing between upper ring (23) and roller mill (1) inwall, described blowing mouth
One circle blowing eye of blower (7) bottom, the diameter of the blowing eye are not more than rotation cage (5) top outer and roller mill (1)
Spacing between inwall.
3. a kind of hot air circulation powder selection device with back-blowing sealing structure according to claim 1 and 2, its feature exist
In being installed with one at the top of roller mill (1) and drive rotation cage (5) rotation cage motor (31) that rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714496.3U CN206008868U (en) | 2016-06-30 | 2016-06-30 | A kind of hot air circulation powder selection device with back-blowing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620714496.3U CN206008868U (en) | 2016-06-30 | 2016-06-30 | A kind of hot air circulation powder selection device with back-blowing sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206008868U true CN206008868U (en) | 2017-03-15 |
Family
ID=58243522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620714496.3U Expired - Fee Related CN206008868U (en) | 2016-06-30 | 2016-06-30 | A kind of hot air circulation powder selection device with back-blowing sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206008868U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040365A (en) * | 2016-06-30 | 2016-10-26 | 湖州丰盛新材料有限公司 | Hot air cyclic powder selecting device with reverse air blowing sealing structure |
| CN113879873A (en) * | 2021-11-09 | 2022-01-04 | 湖南常德南方水泥有限公司 | Coal mill air locking feeder with hot air pipe |
-
2016
- 2016-06-30 CN CN201620714496.3U patent/CN206008868U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040365A (en) * | 2016-06-30 | 2016-10-26 | 湖州丰盛新材料有限公司 | Hot air cyclic powder selecting device with reverse air blowing sealing structure |
| CN113879873A (en) * | 2021-11-09 | 2022-01-04 | 湖南常德南方水泥有限公司 | Coal mill air locking feeder with hot air pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205269787U (en) | Raymond mill | |
| CN207401560U (en) | Suitable for the reducing mechanism of textile raw material | |
| CN104001593B (en) | Material collecting device of horizontal planetary ball mill | |
| WO2016201665A1 (en) | Rotary drying device | |
| CN206008867U (en) | A kind of adjustable roll mill apparatus with back-blowing sealing structure of wind speed | |
| CN104941912A (en) | Intelligent and precise double-drive powder grading machine | |
| CN206008868U (en) | A kind of hot air circulation powder selection device with back-blowing sealing structure | |
| CN206746679U (en) | The movable grinding disc of flour mill | |
| CN205948975U (en) | Heated air circulation selection powder device that wind speed adjustable anti -blow is sealed | |
| CN205949037U (en) | Grinding roll -in power adjustable heated air circulation roller that anti -blow is sealed grinds device | |
| CN206008967U (en) | A kind of adjustable hot air circulation powder selection device of wind speed | |
| CN105964343B (en) | A kind of hot air circulation powder selection device of the adjustable back-blowing sealing of wind speed | |
| CN106000549B (en) | A kind of adjustable roll mill apparatus with back-blowing sealing structure of wind speed | |
| CN206215361U (en) | A kind of hot air circulation powder selection device | |
| CN106031901A (en) | Cage type rotor eddy flow ultra-fine powder concentrator | |
| CN206008964U (en) | A kind of back-blowing sealing structure of powder selection device | |
| CN105521877B (en) | Adjustable cyclone separator | |
| WO2007131423A1 (en) | A material feeder of a large size planetary ball mill | |
| CN210922232U (en) | Rotary uniform-cooling efficient waste heat recovery cooler | |
| CN205949038U (en) | Wind speed adjusting device of roller mill air intake | |
| CN205948976U (en) | Grinding roll -in power adjustable oil pressure crank mechanism | |
| CN106000615A (en) | Hot air circulation powder selecting device with adjustable wind speed | |
| CN111495524A (en) | Air-float driving type traditional Chinese medicine ambergris raw material crusher | |
| CN105964387A (en) | Reverse blow sealed hot wind circulating roller grinding device with adjustable pressure of grinding roller | |
| CN106040365A (en) | Hot air cyclic powder selecting device with reverse air blowing sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20170315 |