CN219855396U - Cold mixing device of raw materials hot compounding is moulded to polymer wood - Google Patents
Cold mixing device of raw materials hot compounding is moulded to polymer wood Download PDFInfo
- Publication number
- CN219855396U CN219855396U CN202320040852.8U CN202320040852U CN219855396U CN 219855396 U CN219855396 U CN 219855396U CN 202320040852 U CN202320040852 U CN 202320040852U CN 219855396 U CN219855396 U CN 219855396U
- Authority
- CN
- China
- Prior art keywords
- raw materials
- blending bunker
- mixing
- feed cylinder
- fixedly connected
- 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
- 238000002156 mixing Methods 0.000 title claims abstract description 97
- 239000002994 raw material Substances 0.000 title claims abstract description 63
- 239000002023 wood Substances 0.000 title claims abstract description 17
- 229920000642 polymer Polymers 0.000 title claims abstract description 14
- 238000013329 compounding Methods 0.000 title claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 239000004033 plastic Substances 0.000 claims abstract description 25
- 229920003023 plastic Polymers 0.000 claims abstract description 25
- 238000004321 preservation Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 239000000945 filler Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- 239000011490 mineral wool Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000009977 dual effect Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 229920002522 Wood fibre Polymers 0.000 description 28
- 239000002025 wood fiber Substances 0.000 description 28
- 238000000034 method Methods 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920001587 Wood-plastic composite Polymers 0.000 description 3
- 244000309464 bull Species 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000011155 wood-plastic composite Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses a high polymer wood-plastic raw material hot mixing and cold mixing device which comprises a mixing bin and a stirring motor, wherein the stirring motor is fixedly arranged at the center position of the top end of the mixing bin. This cold mixing device of hot compounding of raw materials is moulded to polymer wood carries out the heating to the inside of blending bunker through hot-blast inside entering blending bunker along with the material to be favorable to keeping the fluid state of raw materials, blending bunker and inner bag can form double-deck insulation structure in addition, and the inside heat preservation packing that fills of cavity can form the heat preservation intermediate layer between double-deck insulation structure, thereby make the blending bunker have dual heat preservation effect, the heat loss rate that significantly reduces can avoid partial raw materials cooling to solidify like this and can't discharge on the inner wall of blending bunker and cause the waste of raw materials, the problem that the blending bunker does not have the heat preservation effect has been solved, the heat loss can lead to partial raw materials to solidify unable discharge on the inner wall soon, cause the waste of raw materials.
Description
Technical Field
The utility model relates to the technical field of high polymer wood plastic raw material mixing, in particular to a high polymer wood plastic raw material hot mixing and cold mixing device.
Background
The wood-plastic composite material is a novel composite material, the plastic raw material for producing the wood-plastic composite material is mainly high-density polyethylene or polypropylene, wood fibers can be wood powder, chaff or wood fibers, and a small amount of additives and other processing aids are needed, and the raw materials are mixed according to a certain proportion to obtain the wood-plastic composite material.
According to the utility model discloses a wood plastic product raw materials compounding device of application number CN202022690406.0, the on-line screen storage device comprises a base, the equal fixedly connected with bracing piece in left and right sides at base top, the top fixedly connected with stirring storehouse of bracing piece, the inside movable mounting of second bearing has the second bull stick, the outer wall fixed mounting of second bull stick has V type agitator, the one end fixedly connected with electric wire that separates of hot plate and first inlet pipe, the input and the power electricity of electric wire are connected. This wood-plastic product raw materials compounding device has offered second inlet pipe and second motor through the stoving storehouse, and inside has second bull stick, second bearing and V type agitator, when being convenient for pour into different raw materials through the second inlet pipe, carries out the secondary stirring, then takes the raw materials that the stirring was accomplished to the left side through utilizing the rotation of spiral dragon, and the raw materials that the stirring was accomplished is gone out through left discharging pipe to dual stirring's effect has been reached.
However, the wood-plastic product raw material mixing device is poor in mixing effect because the wood fibers are easy to absorb moisture and agglomerate, and the production quality of the wood-plastic raw materials is affected if the wood-plastic raw materials are directly heated and stirred, and the mixing bin does not have a heat preservation effect because the wood-plastic raw materials need to be kept at a certain temperature, so that part of raw materials can not be discharged due to solidification of the heat loss on the inner wall, the raw materials are wasted, and meanwhile, the subsequent cleaning is very difficult.
Therefore, a high polymer wood plastic raw material hot mixing and cold mixing device is provided to solve the problems.
Disclosure of Invention
The utility model aims to provide a high-molecular wood-plastic raw material hot mixing and cold mixing device, which aims to solve the problems that in the background technology, wood fibers are easy to absorb moisture and agglomerate, and if the heating and stirring are directly carried out, the mixing effect is poor and the production quality of the wood-plastic raw material is affected.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a cold mixing arrangement of hot compounding of raw materials is moulded to polymer wood, includes blending bunker and agitator motor, agitator motor fixed mounting is in the central point department on blending bunker top, agitator motor's output runs through to the inside of blending bunker and fixedly connected with agitator, the central point department of blending bunker bottom puts fixedly mounted with discharge valve, four corner fixedly connected with stabilizer blades respectively of blending bunker bottom, the top fixed mounting of blending bunker one side has a feeding cylinder, one side of feeding cylinder runs through to the inside of blending bunker, one side of feeding cylinder bottom is provided with the feed opening, the inside swing joint of feeding cylinder has the screw axis, one side fixed mounting of feeding cylinder has the feeding motor, one side fixedly connected with hopper on feeding cylinder top, the intermediate position department fixedly mounted on feeding cylinder top has the heating cabinet, the top fixed mounting of heating cabinet has the fan, the inside fixed mounting heating wire of heating cabinet, the through-hole has evenly been seted up respectively on the bottom of heating cabinet and the top of feeding cylinder.
Preferably, the inside of the heating box is communicated with the inside of the feeding cylinder through a through hole, and the output end of the fan is fixedly connected with the top end of the heating box.
Preferably, an inner container body is arranged in the mixing bin, a cavity is arranged between the mixing bin and the inner container body, and heat-insulating filler is filled in the cavity.
Preferably, the mixing bin and the inner container body are integrally formed, and the heat-insulating filling adopts heat-insulating rock wool.
Preferably, one side fixedly connected with water tank of blending bunker, the top fixed mounting of water tank has the water pump, the top fixedly connected with distributive pipe of the inside rear end of blending bunker.
Preferably, the front end of the water diversion pipe is fixedly connected with a plurality of groups of spray nozzles.
Preferably, the input end of the water pump penetrates into the water tank, and the output end of the water pump is fixedly connected with one side of the water diversion pipe.
Compared with the prior art, the utility model has the beneficial effects that: the high-molecular wood-plastic raw material hot mixing and cold mixing device not only realizes the pre-drying and scattering of raw materials such as wood fibers, improves the mixing effect, ensures the production quality of the wood-plastic raw materials, realizes the good heat preservation effect of the mixing bin, reduces the loss of heat, avoids the waste of raw materials caused by the fact that part of raw materials are solidified on the inner wall and cannot be discharged, but also realizes the automatic flushing and cleaning after the device is used, and is convenient for subsequent use;
(1) Through being provided with a feeding cylinder, a feeding motor, a spiral shaft, a feeding opening, a hopper, a fan, a heating box, an electric heating wire and a through hole, when the wood fiber feeding machine is used, wood fiber raw materials are added into the hopper, the feeding motor and the fan are started, the electric heating wire is electrified, the wood fibers automatically enter the inside of the feeding cylinder, at the moment, the feeding motor can drive the spiral shaft to carry out spiral conveying on the wood fiber raw materials, and air blown by the fan enters the inside of the feeding cylinder through the through hole after being heated by the electric heating wire, at the moment, agglomerated wood fibers can be scattered in the spiral conveying process, meanwhile, hot air can dry the agglomerated wood fibers in the conveying process, and the dried and scattered wood fiber materials enter the inside of the mixing bin through the feeding opening, so that the wood fiber raw materials can be dried and scattered in advance, the mixing effect is improved, and the production quality of the wood plastic raw materials is guaranteed;
(2) Through being provided with inner bag body, cavity and heat preservation filler, when using, hot-blast entering the inside of blending bunker along with the material heats the inside of blending bunker to be favorable to keeping the fluid state of raw materials, blending bunker and inner bag can form double-deck insulation construction in addition, the cavity is inside to be filled heat preservation filler and can form the heat preservation intermediate layer between double-deck insulation construction, thereby make the blending bunker have dual heat preservation effect, heat loss rate is greatly reduced, can avoid partial raw materials to cool down and solidify and can't discharge on the inner wall of blending bunker and cause the waste of raw materials like this;
(3) Through being provided with shunt tubes, water pump, water tank and shower nozzle, when using, the raw materials is moulded through the discharge valve after the wood that the compounding was accomplished, starts the water pump, and the inside water of water pump extraction water tank and carry for the shunt tubes, the shower nozzle of shunt tubes front end can evenly spray water in the inside of blending bunker, washes the clearance to the inside of blending bunker, can wash the clearance voluntarily after the device uses like this, the follow-up use of being convenient for.
Drawings
FIG. 1 is a schematic cross-sectional elevation view of the present utility model;
FIG. 2 is an enlarged schematic view of the heating box in front section;
FIG. 3 is an enlarged partial cross-sectional view of the structure of FIG. 1A according to the present utility model;
fig. 4 is a schematic diagram of a front view and enlarged structure of a water diversion pipe according to the present utility model.
In the figure: 1. a mixing bin; 2. a support leg; 3. a discharge valve; 4. a stirrer; 5. a feeding cylinder; 6. a feeding motor; 7. a screw shaft; 8. a feed opening; 9. a hopper; 10. a blower; 11. a stirring motor; 12. a water diversion pipe; 13. a water pump; 14. a water tank; 15. a heating box; 16. heating wires; 17. a through hole; 18. an inner container body; 19. a cavity; 20. thermal insulation filler; 21. and (5) spraying a spray nozzle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1: referring to fig. 1-4, a high polymer wood plastic raw material hot mixing and cold mixing device comprises a mixing bin 1 and a stirring motor 11, wherein the stirring motor 11 is fixedly installed at the central position of the top end of the mixing bin 1, the output end of the stirring motor 11 penetrates through the inside of the mixing bin 1 and is fixedly connected with a stirrer 4, a discharge valve 3 is fixedly installed at the central position of the bottom end of the mixing bin 1, supporting feet 2 are fixedly connected at four corners of the bottom end of the mixing bin 1 respectively, a feeding cylinder 5 is fixedly installed at the top end of one side of the mixing bin 1, one side of the feeding cylinder 5 penetrates through the inside of the mixing bin 1, a feeding opening 8 is formed in one side of the bottom end of the feeding cylinder 5, a spiral shaft 7 is movably connected in the inside of the feeding cylinder 5, a feeding motor 6 is fixedly installed at one side of the top end of the feeding cylinder 5, a hopper 9 is fixedly connected with one side of the top end of the feeding cylinder 5, a heating box 15 is fixedly installed at the middle position of the top end of the feeding cylinder 5, a fan 10 is fixedly installed at the top end of the heating box 15, a heating wire 16 is fixedly installed at the inner part of the bottom end of the heating box 15, through holes 17 are uniformly formed in the bottom end of the heating box 15 and the top end of the feeding cylinder 5 respectively.
The inside of the heating box 15 is communicated with the inside of the feeding cylinder 5 through a through hole 17, and the output end of the fan 10 is fixedly connected with the top end of the heating box 15;
specifically, as shown in fig. 1 and 2, wood fiber raw materials are added into the hopper 9, the feeding motor 6 and the fan 10 are started, the electric heating wire 16 is electrified, wood fibers can automatically enter the feeding barrel 5, at the moment, the feeding motor 6 can drive the screw shaft 7 to carry out spiral conveying on the wood fiber raw materials, air blown out by the fan 10 enters the feeding barrel 5 through the through hole 17 after being heated by the electric heating wire 16, at the moment, agglomerated wood fibers can be scattered in the spiral conveying process, meanwhile, the air can dry the wood fiber raw materials in the conveying process, the dried and scattered wood fiber raw materials enter the mixing bin 1 through the feeding opening 8, and therefore the raw materials such as the wood fibers can be dried and scattered in advance, the mixing effect is improved, and the production quality of the wood plastic raw materials is guaranteed.
Example 2: the inside of the mixing bin 1 is provided with an inner container body 18, a cavity 19 is arranged between the mixing bin 1 and the inner container body 18, the inside of the cavity 19 is filled with heat preservation filler 20, the mixing bin 1 and the inner container body 18 are integrally formed, and the heat preservation filler 20 adopts heat preservation rock wool;
specifically, as shown in fig. 1 and 3, hot air enters the mixing bin 1 along with materials to heat the inside of the mixing bin 1, so that the fluid state of the materials is maintained, in addition, the mixing bin 1 and the liner body 18 can form a double-layer heat-insulating structure, and the heat-insulating filler 20 filled in the cavity 19 can form a heat-insulating interlayer between the double-layer heat-insulating structures, so that the mixing bin 1 has a double heat-insulating effect, and the heat loss rate is greatly reduced.
Example 3: a water tank 14 is fixedly connected to one side of the mixing bin 1, a water pump 13 is fixedly arranged at the top end of the water tank 14, a water diversion pipe 12 is fixedly connected to the top of the rear end inside the mixing bin 1, a plurality of groups of spray nozzles 21 are fixedly connected to the front end of the water diversion pipe 12, the input end of the water pump 13 penetrates into the water tank 14, and the output end of the water pump 13 is fixedly connected with one side of the water diversion pipe 12;
specifically, as shown in fig. 1 and fig. 4, after the wood-plastic raw materials after mixing are discharged through the discharge valve 3, the water pump 13 is started, the water pump 13 pumps water in the water tank 14 and conveys the water to the water diversion pipe 12, and the spray nozzle 21 at the front end of the water diversion pipe 12 sprays the water into the mixing bin 1 uniformly, so that the inside of the mixing bin 1 is washed and cleaned.
Working principle: when the wood fiber mixer is used, firstly, wood fiber raw materials are added into the hopper 9, the feeding motor 6 and the fan 10 are started, the heating wire 16 is electrified, wood fiber can automatically enter the interior of the feeding barrel 5, at the moment, the feeding motor 6 drives the screw shaft 7 to carry out spiral conveying on the wood fiber raw materials, air blown out by the fan 10 enters the interior of the feeding barrel 5 through the through hole 17 after being heated by the heating wire 16, at the moment, agglomerated wood fiber can be scattered in the spiral conveying process, meanwhile, hot air dries the wood fiber raw materials in the conveying process, the dried and scattered wood fiber raw materials enter the interior of the mixing bin 1 through the feeding opening 8, the hot air heats and heats the interior of the mixing bin 1 along with the raw materials, so that the fluid state of the raw materials is maintained, then, the stirring motor 11 drives the stirrer 4 to stir, after the mixed wood fiber raw materials are discharged through the discharge valve 3, the water pump 13 is pumped in the interior of the water pump 14 and is conveyed to the water distribution pipe 12, the spray nozzle 21 at the front end of the water distribution pipe 12 can spray the water uniformly inside the mixing bin 1, and the interior of the mixing bin 1 is cleaned.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. The utility model provides a cold mixing arrangement of raw materials hot compounding is moulded to polymer, includes blending bunker (1) and agitator motor (11), its characterized in that: the utility model discloses a heating wire feeding device, including feed cylinder (5), agitator motor (11), feed cylinder (5), heating cabinet (15) and heating cabinet (15) are installed to the top fixed mounting of feed cylinder (1), heating cabinet (15) and heating cabinet (15) are installed to the top of feed cylinder (5), feed cylinder (5) one side runs through to the inside of feed cylinder (1), feed cylinder (5) one side is provided with feed opening (8), feed cylinder (5) inside swing joint has screw shaft (7), one side fixed mounting of feed cylinder (5) has feed motor (6), one side fixedly connected with hopper (9) on feed cylinder (5) top, the intermediate position department fixed mounting on feed cylinder (5) top has heating cabinet (15), heating cabinet (15) are installed to the top fixed mounting of heating cabinet (15), heating cabinet (15) and heating cabinet (17) are installed to the inside of feed cylinder (5).
2. The high polymer wood plastic raw material hot mixing and cold mixing device according to claim 1, wherein: the inside of the heating box (15) is communicated with the inside of the feeding cylinder (5) through a through hole (17), and the output end of the fan (10) is fixedly connected with the top end of the heating box (15).
3. The high polymer wood plastic raw material hot mixing and cold mixing device according to claim 1, wherein: the inside of blending bunker (1) is provided with inner bag body (18), be provided with cavity (19) between blending bunker (1) and inner bag body (18), the inside of cavity (19) is filled with heat preservation filler (20).
4. A polymer wood plastic raw material hot mixing and cold mixing device according to claim 3, which is characterized in that: the mixing bin (1) and the liner body (18) are integrally formed, and the heat-insulating filler (20) is made of heat-insulating rock wool.
5. The high polymer wood plastic raw material hot mixing and cold mixing device according to claim 1, wherein: one side fixedly connected with water tank (14) of blending bunker (1), the top fixed mounting of water tank (14) has water pump (13), the top fixedly connected with shunt tubes (12) of inside rear end of blending bunker (1).
6. The device for hot mixing and cold mixing of high-molecular wood-plastic raw materials according to claim 5, wherein the device is characterized in that: the front end of the water diversion pipe (12) is fixedly connected with a plurality of groups of spray nozzles (21).
7. The device for hot mixing and cold mixing of high-molecular wood-plastic raw materials according to claim 5, wherein the device is characterized in that: the input end of the water pump (13) penetrates into the water tank (14), and the output end of the water pump (13) is fixedly connected with one side of the water diversion pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320040852.8U CN219855396U (en) | 2023-01-08 | 2023-01-08 | Cold mixing device of raw materials hot compounding is moulded to polymer wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320040852.8U CN219855396U (en) | 2023-01-08 | 2023-01-08 | Cold mixing device of raw materials hot compounding is moulded to polymer wood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219855396U true CN219855396U (en) | 2023-10-20 |
Family
ID=88344525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320040852.8U Active CN219855396U (en) | 2023-01-08 | 2023-01-08 | Cold mixing device of raw materials hot compounding is moulded to polymer wood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219855396U (en) |
-
2023
- 2023-01-08 CN CN202320040852.8U patent/CN219855396U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101942140B (en) | Wood plastic composite foaming material and forming process and equipment thereof | |
| CN209191050U (en) | A kind of production dyeing of plastics pelletizer | |
| CN201841624U (en) | Forming equipment of wood-plastic composite foaming material | |
| CN103507160A (en) | Continuous mixer and control method thereof | |
| CN219855396U (en) | Cold mixing device of raw materials hot compounding is moulded to polymer wood | |
| CN107953602A (en) | A kind of charcoal production bar-producing machine | |
| CN211279504U (en) | Injection molding machine for processing and forming environment-friendly resin engine hood | |
| CN219517157U (en) | Granulator used in medicine processing technology | |
| CN206317371U (en) | It is a kind of to control the material extrusion device of combined amount | |
| CN208035052U (en) | A kind of plastic processing mixing device | |
| CN207887137U (en) | A kind of pharmaceutical purpose wet granulator | |
| CN215311627U (en) | Hot melt adhesive raw material mixing device | |
| CN205130346U (en) | Apparatus for preparing super light filler | |
| CN211098885U (en) | Hot melt adhesive raw material mixing device | |
| CN209289569U (en) | A kind of hot grinding device of phenolaldehyde moulding compound | |
| CN208867525U (en) | A kind of wire and cable processing extruder with crushing function | |
| CN209208042U (en) | A kind of cooling device of Wood-plastic profiles | |
| CN205522386U (en) | Titanium dioxide extinction spinning production system is added in polylactic acid section | |
| CN207758068U (en) | A kind of mixing mechanism of plastic injection molding machine | |
| CN208745082U (en) | A kind of plastic tube extrusion ingredient mixing arrangement | |
| CN217319211U (en) | High-efficiency screw extruder | |
| CN205735623U (en) | A kind of PET melt directly mixes the equipment producing master batch | |
| CN201357524Y (en) | Vertical-type stirrer | |
| CN216634956U (en) | Dosing unit is used in production of nanometer modified high density polyethylene bellows | |
| CN215750195U (en) | Waste plastic particle modified plastic basket production equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |