CN217164737U - Open-cast mining's screening breaker - Google Patents
Open-cast mining's screening breaker Download PDFInfo
- Publication number
- CN217164737U CN217164737U CN202220101548.5U CN202220101548U CN217164737U CN 217164737 U CN217164737 U CN 217164737U CN 202220101548 U CN202220101548 U CN 202220101548U CN 217164737 U CN217164737 U CN 217164737U
- Authority
- CN
- China
- Prior art keywords
- crushing
- screening
- support frame
- case
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012216 screening Methods 0.000 title claims abstract description 70
- 238000005065 mining Methods 0.000 title claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 7
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 7
- 241001330002 Bambuseae Species 0.000 abstract description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 7
- 239000011425 bamboo Substances 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 10
- 239000011707 mineral Substances 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 230000008719 thickening Effects 0.000 description 6
- 238000007873 sieving Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
Landscapes
- Crushing And Pulverization Processes (AREA)
Abstract
The utility model discloses a screening breaker of open-air mining, including support frame and screening case, the internally mounted of support frame has the screening case, and filters case and support frame swing joint, broken case is installed on the support frame top of screening case top, and the bottom and the support frame fixed connection of broken case, the feed inlet is installed on the top of broken case, the internally mounted of broken case has broken knife section of thick bamboo, and the both ends of broken knife section of thick bamboo pass through bearing and broken case swing joint, the broken case internally mounted of broken knife section of thick bamboo one side has the protection grillage, the top of protecting the grillage is equipped with articulated round pin. The utility model discloses not only realized that screening breaker has reduced the outer hourglass of ore material, increased screening breaker's output, the screening breaker's that has improved moreover flexibility has prolonged screening breaker's life-span.
Description
Technical Field
The utility model relates to a breaker technical field specifically is a screening breaker of open-pit mining.
Background
Crushing and grinding of ores in a dressing plant usually include crushing, screening and grinding classification of ores, which is to prepare mineral aggregates for the next step of dressing, and is a leading process of the dressing plant, the ores are crushed and ground to dissociate useful minerals and gangue minerals to meet the requirement of the selected granularity, with the development of industrial technology, the superfine grinding of deep processing of certain mineral raw materials such as non-metallic minerals is widely applied, the monomer dissociation degree of the useful minerals and the gangue minerals directly affects the dressing index after the ores are crushed, the reasonable crushing granularity and the process flow have important effects on improving the production capacity, reducing the capital investment, saving the energy consumption, reducing the dressing cost and improving the dressing index, and the screening and crushing device for open-cut mining is widely applied to mines, coal mines, garbage and building garbage for recycling, earthwork, urban infrastructure, city facilities, and the like, And site operation such as roads or construction sites.
The utility model discloses a screening breaker for open-cast mining, as authorizing bulletin No. CN09238129U discloses, including the shell, the top outer wall of shell is opened there is the feed inlet, and the inner wall of feed inlet is provided with the feeder hopper, the top inner wall of shell is provided with spacing fill, and the top is provided with three crushing roller in the shell, and the both ends of three crushing roller are fixed in the both sides inner wall of shell through the bearing respectively, the both sides inner wall of shell is provided with same division board, and the top outer wall of division board is opened has the opening, and the inner wall of opening rotates and is connected with the separator box, the outer wall all around of separator box all opens the filter opening, and the inner wall of filter opening is provided with the filter screen, although the utility model discloses and have three gear drive, relative motion, to the ore precomminution, effectively protect follow-up drill bit, improve the life of equipment, improved crushing effect simultaneously, double crushing, the crushing efficiency is improved and among the crushing process, drive centrifugal separation through the motor, breakage and separation go on simultaneously, have improved work efficiency, but do not solve the screening breaker of current open-pit mining and reduce the hourglass of ore material, increase the problem of screening breaker's output.
Disclosure of Invention
An object of the utility model is to provide an open-pit mining's screening breaker to propose the problem that the breaker is not convenient for reduce the hourglass of ore material, increase screening breaker's output in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a screening breaker of open-air mining, includes support frame and screening case, the internally mounted of support frame has the screening case, and screening case and support frame swing joint, broken case is installed on the support frame top of screening case top, and the bottom and the support frame fixed connection of broken case, the feed inlet is installed on the top of broken case, the internally mounted of broken case has broken knife section of thick bamboo, and the both ends of broken knife section of thick bamboo pass through bearing and broken case swing joint, the broken case internally mounted of broken knife section of thick bamboo one side has the grillage of protecting, the top of protecting the grillage is equipped with articulated round pin, and the backplate frame is through articulated round pin and broken case swing joint, protect one side that is close to broken knife section of thick bamboo of grillage and install the thickening backplate.
Preferably, a supporting sleeve is installed inside the supporting frame on one side of the protection plate frame, and a supporting rod is installed on one side, close to the supporting sleeve, of the protection plate frame.
Preferably, a spring is installed on one side of the supporting rod close to the supporting sleeve, one end of the spring is connected with the supporting sleeve, and the other end of the spring is connected with the supporting rod.
Preferably, the outer wall of the crushing cutter cylinder is provided with a transmission rod, and one end of the transmission rod extends to the outside of the crushing box.
Preferably, install on the outer wall of broken case from the driving wheel, and be connected with the transfer line from the driving wheel, first rotary driving spare is installed on the support frame top of broken case one side, be equipped with the action wheel on the outer wall of first rotary driving spare, the surface of action wheel is equipped with the belt, and the one end of belt extends to the surface from the driving wheel.
Preferably, all be equipped with the elastic plate on the outer wall of screening case both sides, and the top of elastic plate all is connected with the support frame, the inside of screening case is equipped with the filter screen, the support frame internally mounted of filter screen below has the storage case, install control panel on the support frame outer wall of storage case one side.
Preferably, install the second rotary driving spare on the outer wall of support frame, install the carousel on the outer wall of second rotary driving spare, install the linkage arm on the outer wall of carousel, and the one end and the screening case swing joint of linkage arm.
Compared with the prior art, the beneficial effects of the utility model are that: the crushing device not only realizes that the screening and crushing device reduces the leakage of ore materials and increases the yield of the screening and crushing device, but also improves the flexibility of the screening and crushing device and prolongs the service life of the screening and crushing device;
(1) under the support of the supporting sleeve, the spring elastically supports the supporting rod, the supporting rod elastically supports the protecting plate frame to elastically support the thickened protecting plate, and the thickened protecting plate shields and protects the ore crushed by the crushing cutter barrel to prevent the ore from splashing during crushing, so that the screening and crushing device reduces the leakage of ore materials, increases the yield of the screening and crushing device, improves the flexibility of the screening and crushing device, and prolongs the service life of the screening and crushing device;
(2) the driving wheel is driven to rotate by the first rotary driving piece, the belt is driven to move by the driving wheel, the driven wheel is driven to rotate under the transmission of the belt, the driven wheel drives the transmission rod to rotate, the crushing knife cylinder is driven to rotate by the transmission rod, and the ore is crushed under the matching of the internal structure of the crushing box, so that the stable transmission driving of the screening and crushing device is realized, and the stability of the screening and crushing device in operation is improved;
(3) open the second rotary driving spare through operation control panel, linkage arm drive screening case rocks, and the elastic plate carries out elastic support to the screening case, screens the ore powder by the filter screen, and tiny granule gets into the inside of storage case, is stored by the storage case, has realized screening breaker to the quick screening of ore powder for the speed of mineral product powder screening.
Drawings
Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;
fig. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic front sectional view of the guard plate frame of the present invention;
FIG. 4 is a schematic top view of the crushing cutter cylinder of the present invention;
fig. 5 is an enlarged schematic structural diagram of a in fig. 1 according to the present invention.
In the figure: 1. a support frame; 2. a driving wheel; 3. a first rotary drive member; 4. a belt; 5. a feed inlet; 6. a crushing box; 7. a driven wheel; 8. a turntable; 9. a second rotary drive; 10. a linkage arm; 11. a filter screen; 12. a material storage box; 13. a control panel; 14. a screening box; 15. an elastic plate; 16. a plate protecting frame; 17. a spring; 18. supporting a sleeve; 19. a strut; 20. thickening the guard plate; 21. crushing the cutter barrel; 22. a transmission rod; 23. a hinge pin.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an embodiment: a screening and crushing device for open-pit mining comprises a support frame 1 and a screening box 14;
the ore crushing device comprises a support frame 1, a crushing box 6, a feed inlet 5, a crushing knife cylinder 21, a bearing and a crushing box 14, wherein the screening box 14 is arranged in the support frame 1, the screening box 14 is movably connected with the support frame 1, the crushing box 6 is arranged at the top end of the support frame 1 above the screening box 14, the bottom end of the crushing box 6 is fixedly connected with the support frame 1, the feed inlet 5 is arranged at the top end of the crushing box 6, the crushing knife cylinder 21 is arranged in the crushing box 6, two ends of the crushing knife cylinder 21 are movably connected with the crushing box 6 through the bearing, and the crushing knife cylinder 21 plays a role in crushing ores;
a protective plate frame 16 is arranged in the crushing box 6 on one side of the crushing cutter cylinder 21, a hinge pin 23 is arranged at the top end of the protective plate frame 16, the protective plate frame 16 is movably connected with the crushing box 6 through the hinge pin 23, and the hinge pin 23 plays a role in limiting and supporting;
one side of the guard plate frame 16 close to the crushing cutter barrel 21 is provided with a thickened guard plate 20, a support sleeve 18 is arranged inside the support frame 1 at one side of the guard plate frame 16, one side of the guard plate frame 16 close to the support sleeve 18 is provided with a support rod 19, one side of the support rod 19 close to the support sleeve 18 is provided with a spring 17, one end of the spring 17 is connected with the support sleeve 18, the other end of the spring 17 is connected with the support rod 19, and the spring 17 plays a role in elastic support;
when the ore crushing device is used, ore is fed into the crushing box 6 from the feeding port 5, the transmission rod 22 drives the crushing cutter drum 21 to rotate, the crushing cutter drum 21 crushes the ore in the crushing box 6, the protection plate frame 16 is movably connected with the crushing box 6 through the hinge pin 23, under the support of the support sleeve 18, the spring 17 elastically supports the supporting rod 19, the supporting rod 19 elastically supports the protection plate frame 16 to elastically support the thickening protection plate 20, the thickening protection plate 20 shields and protects the crushed ore of the crushing cutter drum 21 to prevent the ore from splashing during crushing, meanwhile, the crushed ore can be back knocked back under the support of the thickening protection plate 20, the saw teeth on the surface of the thickening protection plate 20 can also play a certain crushing role on the ore material, the sieving crushing device is realized to reduce the leakage of the ore material, the yield of the sieving crushing device is increased, and the flexibility of the sieving crushing device is improved, the service life of the screening and crushing device is prolonged;
a transmission rod 22 is installed on the outer wall of the crushing cutter barrel 21, one end of the transmission rod 22 extends to the outside of the crushing box 6, a driven wheel 7 is installed on the outer wall of the crushing box 6, the driven wheel 7 is connected with the transmission rod 22, the driven wheel 7 plays a role in power transmission, a first rotary driving piece 3 is installed at the top end of a supporting frame 1 on one side of the crushing box 6, the first rotary driving piece 3 plays a role in power driving, a driving wheel 2 is arranged on the outer wall of the first rotary driving piece 3, a belt 4 is arranged on the surface of the driving wheel 2, and one end of the belt 4 extends to the surface of the driven wheel 7;
when the ore crushing device is used, the first rotary driving piece 3 is opened through the operation control panel 13, the first rotary driving piece 3 drives the driving wheel 2 to rotate under the support of the support frame 1, the driving wheel 2 drives the belt 4 to move, the driven wheel 7 is driven to rotate under the transmission of the belt 4, the driven wheel 7 drives the transmission rod 22 to rotate, the transmission rod 22 drives the crushing cutter barrel 21 to rotate, and ores are crushed under the matching of the internal structure of the crushing box 6, so that the stable transmission driving of the sieving crushing device is realized, and the stability of the sieving crushing device in operation is improved;
the outer walls of two sides of the screening box 14 are provided with elastic plates 15, the top ends of the elastic plates 15 are connected with the support frame 1, a filter screen 11 is arranged inside the screening box 14, the filter screen 11 is used for filtering mineral powder, a storage box 12 is arranged inside the support frame 1 below the filter screen 11, a control panel 13 is arranged on the outer wall of the support frame 1 on one side of the storage box 12, a second rotary driving piece 9 is arranged on the outer wall of the support frame 1, a turntable 8 is arranged on the outer wall of the second rotary driving piece 9, a linkage arm 10 is arranged on the outer wall of the turntable 8, one end of the linkage arm 10 is movably connected with the screening box 14, and the linkage arm 10 plays a role in power transmission;
during the use, open second rotary driving spare 9 through operation control panel 13, second rotary driving spare 9 drive carousel 8 is rotatory, carousel 8 drive linkage arm 10 swings, linkage arm 10 drive screening case 14 rocks, elastic plate 15 carries out elastic support to screening case 14, screening case 14 drive filter screen 11 rocks, the inside of screening case 14 is got into to the ore powder after the crushing of crushing case 6, filter the ore powder by filter screen 11, tiny granule gets into the inside of storage case 12, store by storage case 12, realized the quick screening of screening breaker to the ore powder, mineral product powder screening's speed has been accelerated.
When the embodiment of the application is used: firstly, ore is fed into the crushing box 6 through the feeding port 5, the crushing knife cylinder 21 is driven to rotate by the transmission rod 22, the crushing knife cylinder 21 crushes the ore in the crushing box 6, the guard plate frame 16 is movably connected with the crushing box 6 through the hinge pin 23, the spring 17 elastically supports the supporting rod 19 under the support of the supporting sleeve 18, the supporting rod 19 elastically supports the guard plate frame 16 to elastically support the thickened guard plate 20, the thickened guard plate 20 shields and protects the crushed ore of the crushing knife cylinder 21 to prevent the ore from splashing during crushing, meanwhile, the crushed ore can be back knocked back under the support of the thickened guard plate 20, the saw teeth on the surface of the thickened guard plate 20 can also play a certain crushing role on the ore material, then the first rotary driving piece 3 is opened through the operation control panel 13, the first rotary driving piece 3 drives the driving wheel 2 to rotate under the support of the support frame 1, the driving wheel 2 drives the belt 4 to move, the driving is driven to rotate from the driving wheel 7 under the transmission of the belt 4, the driving wheel 7 drives the driving rod 22 to rotate, the crushing knife cylinder 21 driven by the driving rod 22 rotates, ore is crushed under the matching of the internal structure of the crushing box 6, the second rotary driving piece 9 is opened through the operation control panel 13, the second rotary driving piece 9 drives the turntable 8 to rotate, the turntable 8 drives the linkage arm 10 to swing, the linkage arm 10 drives the screening box 14 to swing, the elastic plate 15 carries out elastic support on the screening box 14, the screening box 14 drives the filter screen 11 to swing, ore powder after the crushing box 6 is crushed enters the inside of the screening box 14, the ore powder is screened by the filter screen 11, fine particles enter the inside of the storage box 12 and are stored by the storage box 12, and the use work of the crushing device is completed.
Claims (7)
1. The utility model provides an opencut mining's screening breaker, includes support frame (1) and screening case (14), its characterized in that: the interior of the supporting frame (1) is provided with a screening box (14), the screening box (14) is movably connected with the supporting frame (1), a crushing box (6) is arranged at the top end of the support frame (1) above the screening box (14), the bottom end of the crushing box (6) is fixedly connected with the supporting frame (1), the top end of the crushing box (6) is provided with a feeding hole (5), the crushing box (6) is internally provided with a crushing knife cylinder (21), and two ends of the crushing knife cylinder (21) are movably connected with the crushing box (6) through bearings, a protective plate frame (16) is arranged in the crushing box (6) at one side of the crushing knife cylinder (21), a hinge pin (23) is arranged at the top end of the protective plate frame (16), and the guard plate frame (16) is movably connected with the crushing box (6) through a hinge pin (23), a thickened guard plate (20) is installed on one side, close to the crushing cutter barrel (21), of the guard plate frame (16).
2. A screen crushing apparatus for open pit mining as claimed in claim 1, wherein: supporting sleeves (18) are arranged inside the supporting frame (1) on one side of the supporting frame (16), and supporting rods (19) are arranged on one side, close to the supporting sleeves (18), of the supporting frame (16).
3. A screen crushing apparatus for open pit mining as claimed in claim 2, wherein: one side of the supporting rod (19) close to the supporting sleeve (18) is provided with a spring (17), one end of the spring (17) is connected with the supporting sleeve (18), and the other end of the spring (17) is connected with the supporting rod (19).
4. A screen crushing apparatus for open pit mining as claimed in claim 1, wherein: a transmission rod (22) is installed on the outer wall of the crushing cutter barrel (21), and one end of the transmission rod (22) extends to the outside of the crushing box (6).
5. A screen crushing apparatus for open pit mining as claimed in claim 1, wherein: install on the outer wall of broken case (6) from driving wheel (7), and be connected with transfer line (22) from driving wheel (7), first rotary driving spare (3) are installed on support frame (1) top of broken case (6) one side, be equipped with action wheel (2) on the outer wall of first rotary driving spare (3), the surface of action wheel (2) is equipped with belt (4), and the one end of belt (4) extends to the surface from driving wheel (7).
6. A screen crushing apparatus for open pit mining as claimed in claim 1, wherein: all be equipped with elastic plate (15) on the outer wall of screening case (14) both sides, and the top of elastic plate (15) all is connected with support frame (1), the inside of screening case (14) is equipped with filter screen (11), support frame (1) internally mounted of filter screen (11) below has storage case (12), install control panel (13) on support frame (1) outer wall of storage case (12) one side.
7. A screen crushing apparatus for open pit mining as claimed in claim 1, wherein: install second rotation driving piece (9) on the outer wall of support frame (1), install carousel (8) on the outer wall of second rotation driving piece (9), install linkage arm (10) on the outer wall of carousel (8), and the one end and screening case (14) swing joint of linkage arm (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220101548.5U CN217164737U (en) | 2022-01-16 | 2022-01-16 | Open-cast mining's screening breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220101548.5U CN217164737U (en) | 2022-01-16 | 2022-01-16 | Open-cast mining's screening breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217164737U true CN217164737U (en) | 2022-08-12 |
Family
ID=82736140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220101548.5U Expired - Fee Related CN217164737U (en) | 2022-01-16 | 2022-01-16 | Open-cast mining's screening breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217164737U (en) |
-
2022
- 2022-01-16 CN CN202220101548.5U patent/CN217164737U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201189487Y (en) | Improved combined concentrator | |
| CN204338454U (en) | A kind of cement grinding mill abrasive body screening plant | |
| CN112108224A (en) | Grit preprocessing equipment in engineering machine tool field | |
| CN115283066A (en) | Grit reducing mechanism with screening mechanism | |
| CN217164737U (en) | Open-cast mining's screening breaker | |
| CN110694730A (en) | Double-roller crusher for mine | |
| CN207614915U (en) | Efficient fluorite ore fine crusher | |
| CN115193531A (en) | Solid waste's recovery processing device in road bridge construction | |
| CN215611805U (en) | Production facility that mining barren rock preparation aggregate was with having high-efficient dust removal | |
| CN216025398U (en) | Drum-type coal briquette crushing and screening machine for mine site | |
| CN214599341U (en) | Civil engineering construction waste smashes recovery processing device | |
| CN213967071U (en) | Reducing mechanism for civil engineering | |
| CN114932000A (en) | Solid waste's recovery processing device in road bridge construction | |
| CN211026688U (en) | Broken screening installation of recycled aggregate for concrete production | |
| CN210187350U (en) | Novel mechanical device for mining stone crushing | |
| CN208944212U (en) | A kind of dust-proof mining sand shaker | |
| CN109012980B (en) | Mining is with dustproof ore crushing device of environmental protection | |
| CN111715328A (en) | Environment-friendly intelligent stone breaking and sand making machine | |
| CN115400825A (en) | Production equipment and process with efficient dust removal function for preparing aggregate from mining waste rocks | |
| CN215917558U (en) | Breaker is used in steel scrap recovery | |
| CN212632828U (en) | Broken separator of construction waste | |
| CN110694782A (en) | Hierarchical energy-conserving feed arrangement of vertical system sand machine | |
| CN217646571U (en) | Dregs particle size separation system | |
| CN213611683U (en) | Efficient energy-saving crusher | |
| CN218981879U (en) | Mine stone rolling mill |
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: 20220812 |