CN221207155U - Sedimentation separation device for mica powder production - Google Patents
Sedimentation separation device for mica powder production Download PDFInfo
- Publication number
- CN221207155U CN221207155U CN202322927329.XU CN202322927329U CN221207155U CN 221207155 U CN221207155 U CN 221207155U CN 202322927329 U CN202322927329 U CN 202322927329U CN 221207155 U CN221207155 U CN 221207155U
- Authority
- CN
- China
- Prior art keywords
- precipitation tank
- bolted
- mica powder
- powder production
- separation device
- 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.)
- Active
Links
- 238000004062 sedimentation Methods 0.000 title claims abstract description 49
- 239000000843 powder Substances 0.000 title claims abstract description 32
- 238000000926 separation method Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 241001251094 Formica Species 0.000 title claims abstract description 22
- 239000004744 fabric Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000005086 pumping Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000010445 mica Substances 0.000 claims abstract description 10
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 10
- 238000001556 precipitation Methods 0.000 claims description 43
- 238000005728 strengthening Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 description 27
- 239000007787 solid Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 238000005457 optimization Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Sewage (AREA)
Abstract
The utility model discloses a sedimentation separation device for mica powder production, which belongs to the technical field of mica powder production and adopts the technical scheme that the sedimentation separation device comprises a sedimentation tank, wherein the top of the rear side of the sedimentation tank is communicated with a feed pipe, the top of an inner cavity of the sedimentation tank is provided with a fixed ring, the bottom of the fixed ring is bolted with filter cloth, the top of the fixed ring is provided with a transmission component, the bottom of the sedimentation tank is communicated with a discharge pipe, the front side of the discharge pipe is provided with a negative pressure valve, the front side of the sedimentation tank is bolted with a supporting plate, and the top of the supporting plate is provided with a water pumping component.
Description
Technical Field
The utility model relates to the technical field of mica powder production, in particular to a sedimentation separation device for mica powder production.
Background
The mica powder is a nonmetallic mineral and contains various components, wherein the main components are SiO2, the content is generally about 49%, the content of Al2O3 is about 30%, and the mica powder has the characteristics of good elasticity, toughness, insulativity, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesive force and the like, and is an excellent additive.
In the mica powder production process, a sedimentation separation device is used, the existing sedimentation separation device generally separates solid from liquid in a filtering mode, filter cloth is easy to block in the use process, and liquid cannot flow out, so that the effect of solid-liquid separation is affected, and inconvenience is brought to a user.
Disclosure of utility model
The utility model provides a sedimentation separation device for mica powder production, which aims to solve the problems that the existing sedimentation separation device is used for separating solid from liquid in a filtering mode, filter cloth is easy to be blocked in the use process, and liquid cannot flow out, so that the effect of solid-liquid separation is affected, and inconvenience is brought to users.
The utility model is realized in such a way, a sedimentation separation device for mica powder production comprises a sedimentation tank, wherein the top of the rear side of the sedimentation tank is communicated with a feed pipe, the top of an inner cavity of the sedimentation tank is provided with a fixed ring, the bottom of the fixed ring is bolted with a filter cloth, the top of the fixed ring is provided with a transmission assembly, the bottom of the sedimentation tank is communicated with a discharge pipe, the front side of the discharge pipe is provided with a negative pressure valve, the front side of the sedimentation tank is bolted with a support plate, and the top of the support plate is provided with a water pumping assembly;
The transmission assembly comprises a support long plate, an electric telescopic rod and a transmission bar, wherein the top of the electric telescopic rod is bolted with the bottom of the support long plate, and the top of the transmission bar is bolted with the bottom of the electric telescopic rod.
In order to achieve the effect of pumping out the liquid in the inner cavity of the precipitation tank, the sedimentation separation device for mica powder production preferably comprises a water pump, a water pumping pipe and a drain pipe, wherein the bottom of the water pump is bolted with the top of the supporting plate, the bottom of the water pumping pipe is communicated with the left side of the top of the water pump, the rear side of the drain pipe is communicated with the left side of the front side of the water pump, and the water pumping pipe and the drain pipe are long hoses.
In order to achieve the effects of supporting and fixing the filter cloth and carrying out backflow on the separated solids, the sedimentation separation device for mica powder production is preferably used, the surface of the fixing ring is in close contact with the inner wall of the sedimentation tank, the bottom of the inner cavity of the sedimentation tank is provided with a backflow ring, and one side of the backflow ring, which is close to the inner wall of the sedimentation tank, is bolted with the inner wall of the sedimentation tank.
In order to achieve the effect of supporting the precipitation tank, the sedimentation separation device for mica powder production is preferably characterized in that the bottom of the precipitation tank is bolted with four supporting legs which are uniformly distributed around the bottom of the precipitation tank.
In order to achieve the effect of increasing the stability of the support plate on the suction pump, the sedimentation separation device for mica powder production is preferably provided with the reinforcing ribs in a bolting way at the bottom of the support plate, and one side, close to the sedimentation tank, of the reinforcing ribs is in bolting way with the sedimentation tank.
In order to achieve the effect of supporting the long support plate, the sedimentation separation device for mica powder production is preferably adopted, wherein L-shaped support bars are bolted to two sides of the bottom of the long support plate, and one side, close to the sedimentation tank, of each L-shaped support bar is bolted to the sedimentation tank.
In order to achieve the effect of connecting and fixing the fixing ring and the transmission bar, the sedimentation separation device for mica powder production is preferably provided with fixing bolts at two sides of the top of the fixing ring, wherein the bottoms of the fixing bolts penetrate through the transmission bar and extend to the inner cavity of the fixing ring.
In order to achieve the effect that the bolts can rotate and move through threads, the sedimentation separation device for mica powder production is preferable, the two sides of the top of the driving strip are respectively provided with a first threaded hole matched with the fixing bolts, the surfaces of the fixing bolts are in threaded contact with the inner walls of the first threaded holes, the two sides of the top of the fixing ring are respectively provided with a second threaded hole matched with the fixing bolts, and the bottoms of the surfaces of the fixing bolts are in threaded contact with the inner walls of the second threaded holes.
Compared with the prior art, the utility model has the beneficial effects that:
This sedimentation separator that mica powder production was used, through setting up the agitator tank, the inlet pipe, the retainer plate, filter cloth, drive assembly, the discharging pipe, negative pressure valve, backup pad and pumping subassembly, during the use, through putting into the agitator tank with the mica powder solid-liquid that waits to separate from the inlet pipe and deposit, then be connected fixedly through fixing bolt to retainer plate and filter cloth and drive assembly, after depositing certain time, the solid can deposit in the bottom of agitator tank inner chamber, then through starting drive assembly, drive assembly drives the retainer plate and reciprocates, the retainer plate drives filter cloth and moves down, through filter cloth downwardly extrusion, liquid can be through the filtration pore of filter cloth as to the top of filter cloth, the solid then is as to the bottom of filter cloth, separate solid-liquid through the extrusion of filter cloth, then take out the liquid at filter cloth top from the inner chamber of agitator tank through pumping subassembly, open the negative pressure valve after the liquid is taken out, discharge through the discharging pipe with the bottom of solid from the inner chamber of agitator tank, thereby better solid-liquid separation effect has been reached.
Drawings
FIG. 1 is a general construction diagram of a sedimentation separation device for mica powder production of the present utility model;
FIG. 2 is a perspective cross-sectional view of a settling tank in accordance with the present utility model;
FIG. 3 is a block diagram of the drive assembly, retainer ring and filter cloth of the present utility model;
FIG. 4 is a block diagram of the drive belt, retainer ring, filter cloth and fixing bolts of the present utility model;
fig. 5 is a block diagram of a pumping assembly according to the present utility model.
In the figure, 1, a precipitation tank; 2. a feed pipe; 3. a fixing ring; 4. a filter cloth; 5. a transmission assembly; 501. supporting the long plate; 502. an electric telescopic rod; 503. a transmission bar; 6. a discharge pipe; 7. a negative pressure valve; 8. a support plate; 9. a water pumping assembly; 901. a water pump; 902. a water pumping pipe; 903. a drain pipe; 10. a backflow ring; 11. support legs; 12. reinforcing ribs; 13. an L-shaped support bar; 14. a fixing bolt; 15. a first threaded hole; 16. and a second threaded hole.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1-5, the present utility model provides the following technical solutions: the utility model provides a sedimentation separator for mica powder production, includes precipitation tank 1, and the top intercommunication of precipitation tank 1 rear side has inlet pipe 2, and the top of precipitation tank 1 inner chamber is provided with retainer plate 3, and filter cloth 4 has been bolted to the bottom of retainer plate 3, and the top of retainer plate 3 is provided with drive assembly 5, and the bottom intercommunication of precipitation tank 1 has discharging pipe 6, and the front side of discharging pipe 6 is provided with negative pressure valve 7, and the front side bolt of precipitation tank 1 has backup pad 8, and the top of backup pad 8 is provided with pumping assembly 9;
The transmission assembly 5 comprises a support long plate 501, an electric telescopic rod 502 and a transmission bar 503, wherein the top of the electric telescopic rod 502 is bolted with the bottom of the support long plate 501, and the top of the transmission bar 503 is bolted with the bottom of the electric telescopic rod 502.
In this embodiment: through setting up precipitation tank 1, inlet pipe 2, retainer plate 3, filter cloth 4, drive assembly 5, discharging pipe 6, negative pressure valve 7, backup pad 8 and pumping subassembly 9, during the use, through putting into precipitation tank 1 with the mica powder solid-liquid that waits to separate from inlet pipe 2, then fix the retainer plate 3 and filter cloth 4 with being connected of drive assembly 5 through fixing bolt 14, after settling for a certain time, the solid can deposit in the bottom of precipitation tank 1 inner chamber, then through starting drive assembly 5, drive retainer plate 3 downwardly moving is driven to drive the retainer plate 3, filter cloth 4 downwardly moving, through filter cloth 4 downwardly extrusion, the liquid can be through the filtration pore of filter cloth 4 as to the top of filter cloth 4, the solid then is as to the bottom of filter cloth 4, the extrusion through filter cloth 4 separates the solid-liquid, then take out the inner chamber at filter cloth 4 top through pumping subassembly 9, open negative pressure valve 7 after the liquid is taken out, discharge through discharging pipe 6 with the solid from the bottom of precipitation tank 1 inner chamber, thereby better solid-liquid separation effect has been reached.
As a technical optimization scheme of the utility model, the water pumping assembly 9 comprises a water pumping pump 901, a water pumping pipe 902 and a water draining pipe 903, wherein the bottom of the water pumping pump 901 is in bolt connection with the top of the supporting plate 8, the bottom of the water pumping pipe 902 is communicated with the left side of the top of the water pumping pump 901, the rear side of the water draining pipe 903 is communicated with the left side of the front side of the water pumping pump 901, and the water pumping pipe 902 and the water draining pipe 903 are long hoses.
In this embodiment: suction can be generated by providing the suction pump 901, liquid in the inner cavity of the sedimentation tank 1 can be pumped out by providing the suction pipe 902, and the pumped liquid can be discharged by providing the drain pipe 903.
As a technical optimization scheme of the utility model, the surface of the fixed ring 3 is tightly contacted with the inner wall of the precipitation tank 1, the bottom of the inner cavity of the precipitation tank 1 is provided with the backflow ring 10, and one side of the backflow ring 10, which is close to the inner wall of the precipitation tank 1, is bolted with the inner wall of the precipitation tank 1.
In this embodiment: by arranging the fixing ring 3, the filter cloth 4 can be supported and fixed, and by arranging the backflow ring 10, the separated solids can flow back.
As a technical optimization scheme of the utility model, the bottom of the precipitation tank 1 is bolted with the supporting legs 11, and the number of the supporting legs 11 is four and is uniformly distributed around the bottom of the precipitation tank 1.
In this embodiment: by providing the support legs 11, the settling tank 1 can be supported.
As a technical optimization scheme of the utility model, the bottom of the supporting plate 8 is bolted with the reinforcing rib 12, and one side of the reinforcing rib 12 close to the precipitation tank 1 is bolted with the precipitation tank 1.
In this embodiment: by providing the reinforcing ribs 12, the support stability of the support plate 8 to the suction pump 901 can be increased.
As a technical optimization scheme of the utility model, both sides of the bottom of the long support plate 501 are bolted with L-shaped support bars 13, and one side of the L-shaped support bars 13, which is close to the precipitation tank 1, is bolted with the precipitation tank 1.
In this embodiment: by providing the L-shaped support bar 13, the support long plate 501 can be supported.
As a technical optimization scheme of the utility model, fixing bolts 14 are arranged on two sides of the top of the fixing ring 3, and the bottoms of the fixing bolts 14 penetrate through the transmission bars 503 and extend to the inner cavity of the fixing ring 3.
In this embodiment: by providing the fixing bolt 14, the driving bar 503 and the fixing ring 3 can be connected and fixed.
As a technical optimization scheme of the utility model, both sides of the top of the transmission bar 503 are provided with first threaded holes 15 matched with the fixing bolts 14, the surface of the fixing bolts 14 is in threaded contact with the inner wall of the first threaded holes 15, both sides of the top of the fixing ring 3 are provided with second threaded holes 16 matched with the fixing bolts 14, and the bottom of the surface of the fixing bolts 14 is in threaded contact with the inner wall of the second threaded holes 16.
In this embodiment: by providing the first screw hole 15 and the second screw hole 16, the driving bar 503 and the fixing ring 3 are connected and fixed by the screw in order to allow the bolt to rotate and move by the screw.
Working principle: firstly, mica powder solid-liquid to be separated is placed into a precipitation tank 1 from a feed pipe 2 for precipitation, then a fixing ring 3 and a filter cloth 4 are connected and fixed with a transmission bar 503 through a fixing bolt 14, after a certain time of precipitation, solids can be precipitated at the bottom of an inner cavity of the precipitation tank 1, then the electric telescopic rod 502 is started, the electric telescopic rod 502 drives the fixing ring 3 to move downwards, the fixing ring 3 drives the filter cloth 4 to move downwards, liquid can be extruded downwards through the filter cloth 4, the liquid can be placed at the top of the filter cloth 4 through a filter hole of the filter cloth 4, the solids are placed at the bottom of the filter cloth 4, the solid-liquid is separated through the extrusion of the filter cloth 4, then the liquid at the top of the filter cloth 4 is pumped out from the inner cavity of the precipitation tank 1 through a pumping assembly 9, a negative pressure valve 7 is opened after the liquid is pumped out, and the solids are discharged from the bottom of the inner cavity of the precipitation tank 1 through a discharge pipe 6, so that a good solid-liquid separation effect is achieved.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. The utility model provides a sedimentation separator that mica powder production was used, includes precipitation tank (1), its characterized in that: the top of the rear side of the precipitation tank (1) is communicated with a feed pipe (2), the top of the inner cavity of the precipitation tank (1) is provided with a fixed ring (3), the bottom of the fixed ring (3) is bolted with a filter cloth (4), the top of the fixed ring (3) is provided with a transmission component (5), the bottom of the sedimentation tank (1) is communicated with a discharge pipe (6), a negative pressure valve (7) is arranged on the front side of the discharge pipe (6), a supporting plate (8) is bolted on the front side of the sedimentation tank (1), and a water pumping assembly (9) is arranged at the top of the supporting plate (8);
The transmission assembly (5) comprises a support long plate (501), an electric telescopic rod (502) and a transmission bar (503), wherein the top of the electric telescopic rod (502) is bolted with the bottom of the support long plate (501), and the top of the transmission bar (503) is bolted with the bottom of the electric telescopic rod (502).
2. A sedimentation separation device for mica powder production according to claim 1, characterized in that: the water pumping assembly (9) comprises a water pumping pump (901), a water pumping pipe (902) and a water draining pipe (903), wherein the bottom of the water pumping pump (901) is connected with the top of the supporting plate (8) in a bolt mode, the bottom of the water pumping pipe (902) is communicated with the left side of the top of the water pumping pump (901), the rear side of the water draining pipe (903) is communicated with the left side of the front side of the water pumping pump (901), and the water pumping pipe (902) and the water draining pipe (903) are long hoses.
3. A sedimentation separation device for mica powder production according to claim 1, characterized in that: the surface of retainer plate (3) and the inner wall in close contact with of precipitation tank (1), the bottom of precipitation tank (1) inner chamber is provided with backflow circle (10), one side that backflow circle (10) are close to precipitation tank (1) inner wall and precipitation tank (1) inner wall bolt.
4. A sedimentation separation device for mica powder production according to claim 1, characterized in that: the bottom of the precipitation tank (1) is bolted with supporting legs (11), and the number of the supporting legs (11) is four and is uniformly distributed around the bottom of the precipitation tank (1).
5. A sedimentation separation device for mica powder production according to claim 1, characterized in that: the bottom of backup pad (8) is bolted with strengthening rib (12), the one side that strengthening rib (12) are close to precipitation tank (1) is bolted with precipitation tank (1).
6. A sedimentation separation device for mica powder production according to claim 1, characterized in that: the two sides of the bottom of the support long plate (501) are both bolted with L-shaped support bars (13), and one side of the L-shaped support bars (13) close to the precipitation tank (1) is bolted with the precipitation tank (1).
7. A sedimentation separation device for mica powder production according to claim 1, characterized in that: both sides at the top of the fixed ring (3) are provided with fixed bolts (14), and the bottoms of the fixed bolts (14) penetrate through the transmission bars (503) and extend to the inner cavity of the fixed ring (3).
8. The sedimentation separation device for mica powder production according to claim 7, wherein: the two sides at the top of the transmission bar (503) are provided with first threaded holes (15) matched with the fixing bolts (14), the surfaces of the fixing bolts (14) are in threaded contact with the inner walls of the first threaded holes (15), the two sides at the top of the fixing ring (3) are provided with second threaded holes (16) matched with the fixing bolts (14), and the bottoms of the surfaces of the fixing bolts (14) are in threaded contact with the inner walls of the second threaded holes (16).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202322927329.XU CN221207155U (en) | 2023-10-31 | 2023-10-31 | Sedimentation separation device for mica powder production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202322927329.XU CN221207155U (en) | 2023-10-31 | 2023-10-31 | Sedimentation separation device for mica powder production |
Publications (1)
Publication Number | Publication Date |
---|---|
CN221207155U true CN221207155U (en) | 2024-06-25 |
Family
ID=91546532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202322927329.XU Active CN221207155U (en) | 2023-10-31 | 2023-10-31 | Sedimentation separation device for mica powder production |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN221207155U (en) |
-
2023
- 2023-10-31 CN CN202322927329.XU patent/CN221207155U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN112263867A (en) | Sewage treatment device | |
CN221207155U (en) | Sedimentation separation device for mica powder production | |
CN211885756U (en) | Domestic sewage treatment solid-liquid separation equipment | |
CN216418531U (en) | Solid-liquid separation equipment with clearance subassembly | |
CN219399302U (en) | Oil-water separation device of chemical oil removal tank | |
CN217801807U (en) | Sewage recovery system and cleaning robot | |
CN217613425U (en) | Medium filter | |
CN214087891U (en) | MBR membrane buried integrated sewage treatment device | |
CN216321161U (en) | Novel composite nanofiltration membrane component and sewage treatment equipment | |
CN219292249U (en) | Energy-saving cleaning device for assembling thin-wall angular contact bearing ring | |
CN215310522U (en) | Efficient solid-liquid separation sewage treatment device for sedimentation tank | |
CN215841843U (en) | A multistage circulation clarifying tank for barium sulfate production | |
CN216918730U (en) | A multi-functional purifier for peasant household domestic water | |
CN217757189U (en) | MBR integration equipment | |
CN219440855U (en) | High-efficient environmental protection water treatment facilities | |
CN219744078U (en) | Novel waste oil collector | |
CN220502780U (en) | Mud-water separator | |
CN220450141U (en) | Purifying device for refined beer malt | |
CN220176150U (en) | Starch separator for potato starch production | |
CN219615091U (en) | Sedimentation tank convenient for impurity cleaning | |
CN221579826U (en) | Circulating water system for water treatment | |
CN209853773U (en) | Novel external protein separator | |
CN219514980U (en) | Temporary rearing device for oyster purification | |
CN214781803U (en) | Low salt lactic acid fermentation pickles apparatus for producing | |
CN221567294U (en) | River channel dredging device with mud-water separation function |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |