CN211254641U - Rapid disassembly mechanism for ultrafiltration membrane wire winding barrel - Google Patents
Rapid disassembly mechanism for ultrafiltration membrane wire winding barrel Download PDFInfo
- Publication number
- CN211254641U CN211254641U CN201922220049.9U CN201922220049U CN211254641U CN 211254641 U CN211254641 U CN 211254641U CN 201922220049 U CN201922220049 U CN 201922220049U CN 211254641 U CN211254641 U CN 211254641U
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- Prior art keywords
- ring
- annular
- groove
- wall
- driving shaft
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- Expired - Fee Related
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- 239000012528 membrane Substances 0.000 title claims abstract description 27
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 19
- 238000004804 winding Methods 0.000 title abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 24
- 230000000670 limiting effect Effects 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 9
- 235000017491 Bambusa tulda Nutrition 0.000 description 9
- 241001330002 Bambuseae Species 0.000 description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 9
- 239000011425 bamboo Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000012510 hollow fiber Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model relates to a rapid dismounting mechanism of an ultrafiltration membrane wire winding barrel, which comprises a driving shaft of a winder and a wire winding barrel, wherein a tightening mechanism is arranged between the driving shaft and the wire winding barrel, the tightening mechanism comprises a fixed ring fixedly connected on the driving shaft, a ring groove arranged on the end surface of the fixed ring and extending circumferentially around the fixed ring, and a rotating ring inserted in the ring groove in a sliding way, the wire winding barrel is sleeved on the fixed ring, the rotating ring is connected with the inner wall of the ring groove in a threaded way, a tightening unit is arranged between the outer wall of the rotating ring and the ring groove, the tightening unit comprises an annular tightening groove arranged on the outer wall of the rotating ring, set up in the annular and keep away from a plurality of spacing groove, a plurality of one-to-one of the inner wall of driving shaft and set up the butt ball in the spacing inslot, the spacing groove radially runs through solid fixed ring outer wall along solid fixed ring, butt ball one side is located and supports tight inslot and opposite side is located the spacing inslot, the swivel becket is close to the terminal surface fixedly connected with handle of annular opening part. The utility model discloses the effect that promotes work efficiency has.
Description
Technical Field
The utility model belongs to the technical field of the technique of milipore filter and specifically relates to a milipore filter wire winding section of thick bamboo quick disassembly body is related to.
Background
In China, because water source pollution and secondary pollution are serious, the deep purification effect of the drinking water is difficult to realize by using a common filter medium. The ultrafiltration membrane purification technology adopts a high-precision pure physical filtration principle, the filtration precision is 0.1-0.001 micron, no chemical substance is added, and the filtration is carried out by virtue of micropores densely distributed on the surface of the ultrafiltration membrane, so that harmful substances are retained, and the effects of filtration, purification and purification are realized. Trapping iron rust, particles, bacteria, colloid, partial organic matters and the like in water, keeping the pH value of the produced water unchanged, and simultaneously keeping trace mineral substances and trace dissolved oxygen required by human bodies in the water.
The hollow fiber ultrafiltration membrane component is one of ultrafiltration membranes. It is the most mature and advanced technique in ultrafiltration technology. The outer diameter of the hollow fiber is 0.5-2.0nm, the inner diameter is 0.3-1.4nm, micropores are distributed on the wall of the hollow fiber, the aperture is expressed by the molecular weight of the trapped substance, and the trapped molecular weight can reach thousands to hundreds of thousands. The raw water flows in the outer side or inner cavity of the hollow fiber under pressure to form an external pressure type and an internal pressure type respectively. Ultrafiltration is a dynamic filtration process, and trapped substances can be removed with concentrated water, so that the surface of the membrane is not blocked, and the membrane can continuously run for a long time. Ultrafiltration membranes are one of the earliest developed polymeric separation membranes.
The current ultrafiltration membrane production method generally adopts the steps of dissolving raw materials for membrane preparation in a temperature-controllable, stirring and pressurizing reaction kettle, stirring and blending until the raw materials are uniform to obtain a membrane casting solution, then standing the membrane casting solution for a period of time, decompressing or centrifugally defoaming, extruding the membrane casting solution and an inner gel medium out of a filamentous liquid membrane through a spinneret plate by a metering pump, feeding the liquid membrane into an outer solidification medium for solidification through an air interval of 0-100 cm, and winding the liquid membrane on a wire winding barrel by a winder to generate the high-efficiency ultrafiltration membrane.
However, in the prior art, the wire winding barrel is fixed on a driving shaft of the winding machine through a plurality of bolts, when workers replace the wire winding barrel, the bolts need to be unscrewed by means of tools, and then the wire winding barrel needs to be replaced, so that the process is troublesome, and the working efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, one of the purposes of the utility model is to provide a quick disassembly body of milipore filter forming wire section of thick bamboo to in the staff dismantle fast and install a forming wire section of thick bamboo, in order to promote work efficiency.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a milipore filter forming tube quick detach mechanism, driving shaft and forming tube including the coiler, be provided with between driving shaft and the forming tube and support tight mechanism, support tight mechanism include fixed connection in driving epaxial solid fixed ring, set up in gu fixed ring terminal surface just winds gu annular, the slip grafting that solid fixed ring circumference extends in swivel becket in the annular, the forming tube cover is located gu fixed ring just with gu fixed ring outer wall is clearance fit, swivel becket threaded connection in the inner wall that the driving shaft is close to the annular, just swivel becket outer wall with be provided with between the annular and support tight unit, support tight unit including set up in the swivel becket outer wall just winds the annular of swivel becket circumference extension is supported tight groove, set up in the annular is kept away from the inner wall of driving shaft just winds a plurality of spacing groove, the even setting of annular circumference, A plurality of one-to-one set up in butt joint ball of spacing inslot, the spacing groove radially runs through along solid fixed ring gu fixed ring outer wall, and the spacing groove is located the opening diameter of solid fixed ring outer wall is less than the diameter of butt joint ball, it follows to support tight groove the driving shaft axial direction deepens gradually towards the orientation of keeping away from annular open-ended, butt ball one side is located support tight inslot and opposite side and be located the spacing inslot, the swivel becket is close to the terminal surface fixedly connected with handle of annular opening part.
By adopting the technical scheme, through the matching among the rotating ring, the fixing ring and the abutting unit, when a worker needs to install the winding cylinder, the winding cylinder is sleeved outside the fixing ring, after the relative position between the winding cylinder and the fixing ring is adjusted, the rotating ring is rotated through the handle, as the rotating ring is in threaded connection with the inner wall of the annular groove, the rotating ring and the fixing ring generate axial relative movement, and as the abutting groove is gradually deepened, the abutting ball with one side positioned in the abutting groove is extruded by the groove wall of the abutting groove to move towards the direction of the through groove, and one end of the ball extends out of the limiting groove and abuts against the inner wall of the winding cylinder, so that the fixing of the winding cylinder is completed, and the rotating ring and the fixing ring are also relatively limited under the friction force of the abutting ball, so that the abutting ball stably abuts against the inner wall of the winding cylinder, when the worker needs to replace the winding cylinder, through the reverse rotation handle, make the butt joint ball increase gradually in the radial activity space who supports tight inslot to remove the tight state of supporting to a winding section of thick bamboo inner wall, the staff of being convenient for takes off a winding section of thick bamboo, its installation and dismantlement process only need rotate the handle and can accomplish, need not with the help of external force, the staff of being convenient for carries out quick dismantlement and quick installation to a winding section of thick bamboo, in order to promote work efficiency.
The present invention may be further configured in a preferred embodiment as: the abutting units are evenly provided with a plurality of abutting units along the axial direction of the driving shaft.
Through adopting above-mentioned technical scheme, through setting up a plurality of to support tight unit, make the staff when rotating the swivel becket, support tight unit through a plurality of axial arrangement and carry out the application of force jointly to the winding section of thick bamboo, make the winding section of thick bamboo atress more even, the difficult condition that takes place to warp or even damage.
The present invention may be further configured in a preferred embodiment as: the handle is sleeved with a flexible pad.
Through adopting above-mentioned technical scheme, through set up the flexible cover on hand to make the staff more comfortable when holding the handle and rotating the swivel becket.
The present invention may be further configured in a preferred embodiment as: and a sealing mechanism is arranged between the rotating ring and the inner wall of the annular groove.
Through adopting above-mentioned technical scheme, through setting up sealing mechanism to reduce in external dust gets into the annular, take place the increase of frictional force between the internal mechanism, the staff is difficult to the condition of rotating the rotating ring.
The present invention may be further configured in a preferred embodiment as: the sealing mechanism comprises a sealing ring fixedly connected to one end, close to the annular groove opening, of the outer wall of the rotating ring, and an annular sealing groove formed in the end face of the fixing ring and matched with the sealing ring, the sealing groove is communicated with the annular groove, and the sealing ring is movably inserted into the sealing groove.
Through adopting above-mentioned technical scheme, lead to mutually supporting between seal groove and sealing ring, make the swivel becket slide the sealing ring and peg graft in the seal groove after rotating to increase the inside leakproofness of annular, reduce the condition that external dust got into the annular.
The present invention may be further configured in a preferred embodiment as: and a limiting mechanism which applies acting force towards the bottom surface of the annular groove to the rotating ring is arranged between the annular groove and the rotating ring.
Through adopting above-mentioned technical scheme, through setting up stop gear, make the swivel becket rotate and make the butt ball support tightly in the forming tube inner wall after, through the effort that stop gear exerted, make the position of swivel becket more stable, difficult emergence is rotated.
The present invention may be further configured in a preferred embodiment as: the limiting mechanism comprises a first magnetic ring fixedly connected to the limiting ring close to the bottom surface of the ring groove and a second magnetic ring fixedly connected to the bottom surface of the ring groove.
Through adopting above-mentioned technical scheme, through mutually supporting between first magnetic ring and the second magnetic ring, make the rotating ring rotate and remove towards the ring groove bottom surface and make the butt ball support tightly behind the forming tube inner wall, through the appeal between first magnetic ring and the second magnetic ring, make the position of rotating ring for solid fixed ring more stable, and when the rotating ring is more near apart from the distance of ring groove bottom surface, the stable effect is stronger.
The present invention may be further configured in a preferred embodiment as: the abutment ball has a frosted surface.
Through adopting above-mentioned technical scheme, through set up dull polish surface on the butt ball to make the butt ball difficult for taking place relative slip again after supporting tightly in a forming tube inner wall, increase the stability between butt ball and the forming tube.
To sum up, the utility model discloses a following at least one useful technological effect:
1. through the cooperation between swivel ring, solid fixed ring and the unit of supporting tightly, the staff of being convenient for carries out quick dismantlement and quick installation to a winding section of thick bamboo to promote work efficiency.
2. Through setting up sealing mechanism to reduce in external dust gets into the annular, take place the increase of frictional force between the internal mechanism, the staff is difficult to the condition of rotating the rotating ring.
3. Through setting up stop gear, make the swivel becket rotate and make the butt ball support tightly in the forming tube inner wall after, through the effort that stop gear exerted, make the position of swivel becket more stable, difficult emergence is rotated.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is an overall sectional view of the present embodiment;
fig. 3 is a partially enlarged view of a portion a in fig. 1.
Reference numerals: 1. a drive shaft; 2. a wire-winding tube; 3. a tightening mechanism; 4. a fixing ring; 5. a ring groove; 6. a rotating ring; 7. a tightening unit; 8. abutting against the groove; 9. a limiting groove; 10. abutting the ball; 11. a handle; 12. a flexible pad; 13. a limiting mechanism; 14. a first magnetic ring; 15. a second magnetic ring; 16. a sealing mechanism; 17. a seal ring; 18. sealing the groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses a quick disassembly body of milipore filter forming tube, including driving shaft 1 and the forming tube 2 of coiler, install and dismantle forming tube 2 for the staff for being convenient for, be provided with between driving shaft 1 and the forming tube 2 and support tight mechanism 3, support tight mechanism 3 and include solid fixed ring 4 of fixed connection on driving shaft 1, set up in solid fixed ring 4 terminal surface and around solid fixed ring 4 circumference extension's annular 5, slip the swivel becket 6 of pegging graft in annular 5.
The winding tube 2 is sleeved on the fixing ring 4, the winding tube 2 is in clearance fit with the outer wall of the fixing ring 4, the rotating ring 6 is in threaded connection with the inner wall of the annular groove 5 close to the driving shaft 1, a plurality of abutting units 7 are arranged between the outer wall of the rotating ring 6 and the annular groove 5, and the plurality of abutting units 7 are evenly arranged along the axial direction of the driving shaft 1.
Support tight unit 7 including supporting tight groove 8, a plurality of spacing groove 9 and a plurality of butt ball 10, it is cyclic annular to support tight groove 8, it sets up in swivel ring 6 outer wall and revolutes swivel ring 6 circumference extension to support tight groove 8, a plurality of spacing groove 9 is seted up respectively in annular 5 inner wall of keeping away from driving shaft 1, and a plurality of spacing groove 9 is around 5 circumference align to grid of annular, a plurality of butt ball 10 one-to-one sets up in spacing groove 9, and butt ball 10 has dull polish surface, spacing groove 9 radially runs through solid fixed ring 4 outer wall along solid fixed ring 4, and the opening diameter that spacing groove 9 is located solid fixed ring 4 outer wall is less than the diameter of butt ball 10, it deepens gradually along the direction that driving shaft 1 axial orientation kept away from annular 5 opening to support tight groove 8, butt ball 10 one side is located and supports tight inslot 8 and the opposite side is located spacing groove 9.
For the staff rotates swivel ring 6, swivel ring 6 is close to the terminal surface fixedly connected with handle 11 of 5 openings parts of annular, and the cover is equipped with flexible pad 12 on the handle 11 to make the staff more comfortable when holding handle 11 and rotating swivel ring 6.
Referring to fig. 2 and 3, in order to make the abutting state of the abutting ball 10 more stable, a limiting mechanism 13 is disposed between the annular groove 5 and the rotating ring 6, the limiting mechanism 13 includes a first magnetic ring 14 fixedly connected to the limiting ring near the bottom surface of the annular groove 5, and a second magnetic ring 15 fixedly connected to the bottom surface of the annular groove 5, after the rotating ring 6 rotates and moves toward the bottom surface of the annular groove 5 and makes the abutting ball 10 abut against the inner wall of the winding cylinder 2, the rotating ring 6 is not easy to rotate relative to the fixing ring 4 by the attraction between the first magnetic ring 14 and the second magnetic ring 15, and when the rotating ring 6 is closer to the bottom surface of the annular groove 5, the attraction between the first magnetic ring 14 and the second magnetic ring 15 is larger, the stabilizing effect is stronger, and when the rotating ring 6 is farther from the bottom surface of the annular groove 5, the attraction between the first magnetic ring 14 and the second magnetic ring 15 is smaller, the easier it is for a worker to rotate the rotating ring, the forming tube 2 is easily removed.
For the condition that reduces external dust and get into in the annular 5, be provided with sealing mechanism 16 between swivel ring 6 and the 5 inner walls of annular, sealing mechanism 16 includes sealing ring 17 of fixed connection in the one end of 6 outer walls of swivel ring near the annular 5 opening part, set up in solid fixed ring 4 terminal surfaces and with sealing ring 17 matched with annular seal groove 18, seal groove 18 communicates with each other with annular 5, swivel ring 6 slides the grafting in seal groove 18 with sealing ring 17 after rotating, in order to increase the inside leakproofness of annular 5, reduce the condition that external dust got into in annular 5.
The implementation principle of the embodiment is as follows:
when a worker needs to install the winding tube 2, the winding tube 2 is sleeved outside the fixing ring 4, after the relative position between the winding tube and the fixing ring 4 is adjusted, the rotating ring 6 is rotated through the handle 11, the rotating ring 6 is connected to the inner wall of the annular groove 5 through threads, the rotating ring 6 moves towards the bottom surface of the annular groove 5, and the abutting groove 8 is gradually deepened, the abutting ball 10 with one side positioned in the abutting groove 8 is extruded by the groove wall of the abutting groove 8 and moves towards the direction of the through groove, one end of the ball extends out of the limiting groove 9 and abuts against the inner wall of the winding tube 2, so that the winding tube 2 is fixed, the rotating ring 6 and the fixing ring 4 are relatively limited under the friction force of the abutting ball 10, so that the abutting ball 10 stably abuts against the inner wall of the winding tube 2, when the worker needs to replace the winding tube 2, the handle 11 is rotated reversely, so that the radial moving space of the abutting ball 10 in the abutting groove 8 is gradually increased, thereby relieving the tight state of the inner wall of the wire winding cylinder 2 and facilitating the staff to take down the wire winding cylinder 2.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a quick disassembly body of milipore filter forming tube, includes driving shaft (1) and forming tube (2) of winder, its characterized in that: be provided with between driving shaft (1) and a forming tube (2) and support tight mechanism (3), support tight mechanism (3) including fixed ring (4) on driving shaft (1), set up in fixed ring (4) terminal surface just winds annular (5), the slip grafting that fixed ring (4) circumference extends in swivel ring (6) in annular (5), a forming tube (2) cover is located fixed ring (4) and with fixed ring (4) outer wall is clearance fit, swivel ring (6) threaded connection in annular (5) are close to the inner wall of driving shaft (1), just swivel ring (6) outer wall with be provided with between annular (5) and support tight unit (7), support tight unit (7) including set up swivel ring (6) outer wall and wind annular that swivel ring (6) circumference extends supports groove (8), Set up in keep away from annular (5) the inner wall of driving shaft (1) and wind a plurality of spacing groove (9), a plurality of one-to-one set up in the even butt joint ball (10) that sets up of annular (5) circumference, spacing groove (9) radially run through along solid fixed ring (4) gu fixed ring (4) outer wall, and spacing groove (9) are located gu the opening diameter of fixed ring (4) outer wall is less than the diameter of butt joint ball (10), follow tight groove (8) driving shaft (1) axial orientation is kept away from annular (5) open-ended direction and is deepened gradually, butt joint ball (10) one side is located to tight groove (8) in and the opposite side is located in spacing groove (9), swivel becket (6) are close to the terminal surface fixedly connected with handle (11) of annular (5) opening part.
2. The ultrafiltration membrane forming tube quick-release mechanism according to claim 1, characterized in that: the pressing units (7) are uniformly arranged along the axial direction of the driving shaft (1).
3. The ultrafiltration membrane forming tube quick-release mechanism according to claim 1, characterized in that: the handle (11) is sleeved with a flexible pad (12).
4. The ultrafiltration membrane forming tube quick-release mechanism according to claim 1, characterized in that: and a sealing mechanism (16) is arranged between the rotating ring (6) and the inner wall of the ring groove (5).
5. The ultrafiltration membrane forming tube quick-release mechanism according to claim 4, characterized in that: sealing mechanism (16) including fixed connection in swivel ring (6) outer wall is close to sealing ring (17), the seting up in solid fixed ring (4) terminal surface and with annular seal groove (18) of sealing ring (17) matched with, seal groove (18) with annular (5) communicate with each other, sealing ring (17) remove peg graft in seal groove (18).
6. The ultrafiltration membrane forming tube quick-release mechanism according to claim 1, characterized in that: and a limiting mechanism (13) which applies acting force towards the bottom surface of the annular groove (5) to the rotating ring (6) is arranged between the annular groove (5) and the rotating ring (6).
7. The ultrafiltration membrane forming tube quick-release mechanism according to claim 6, characterized in that: the limiting mechanism (13) comprises a first magnetic ring (14) fixedly connected to the rotating ring (6) close to the bottom surface of the annular groove (5) and a second magnetic ring (15) fixedly connected to the bottom surface of the annular groove (5).
8. The ultrafiltration membrane forming tube quick-release mechanism according to claim 1, characterized in that: the abutment ball (10) has a frosted surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922220049.9U CN211254641U (en) | 2019-12-11 | 2019-12-11 | Rapid disassembly mechanism for ultrafiltration membrane wire winding barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922220049.9U CN211254641U (en) | 2019-12-11 | 2019-12-11 | Rapid disassembly mechanism for ultrafiltration membrane wire winding barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211254641U true CN211254641U (en) | 2020-08-14 |
Family
ID=71965569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922220049.9U Expired - Fee Related CN211254641U (en) | 2019-12-11 | 2019-12-11 | Rapid disassembly mechanism for ultrafiltration membrane wire winding barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211254641U (en) |
-
2019
- 2019-12-11 CN CN201922220049.9U patent/CN211254641U/en not_active Expired - Fee Related
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|---|---|---|---|
| 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: 20200814 |