CN220919454U - Raw material preparation system device for ferrosilicon production - Google Patents
Raw material preparation system device for ferrosilicon production Download PDFInfo
- Publication number
- CN220919454U CN220919454U CN202322386916.2U CN202322386916U CN220919454U CN 220919454 U CN220919454 U CN 220919454U CN 202322386916 U CN202322386916 U CN 202322386916U CN 220919454 U CN220919454 U CN 220919454U
- Authority
- CN
- China
- Prior art keywords
- batching
- fixedly arranged
- inner cylinder
- box
- sides
- 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
- 239000002994 raw material Substances 0.000 title claims abstract description 31
- 229910000519 Ferrosilicon Inorganic materials 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title description 2
- 230000000670 limiting effect Effects 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000000428 dust Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Crushing And Pulverization Processes (AREA)
Abstract
The utility model relates to the technical field of ferrosilicon production, in particular to an original batching system device for ferrosilicon production, which comprises a workbench, wherein a batching box is fixedly arranged at the top of the workbench, an batching inner cylinder is fixedly arranged in the batching box, a driving motor is fixedly arranged at the top of the batching inner cylinder, a rotating rod is arranged in the batching inner cylinder, supporting round rods are fixedly arranged at both sides of a mounting joint, limiting rings are fixedly sleeved on both sides of the supporting round rods, a rotating roller is arranged between the limiting rings, a plurality of uniformly distributed crushing blades are fixedly arranged on the rotating roller, a discharging port is fixedly arranged at the bottom of the batching inner cylinder, and the driving motor, the rotating rod, the mounting joint, the supporting round rods, the rotating roller and the crushing blades are matched for use, so that when the original batching system device for ferrosilicon production is used, the caked raw materials can be thoroughly crushed, the caked materials are prevented from being in the finally mixed materials, the bulk of small caked mass is prevented, the integral quality after the raw material mixing is improved, and the normal operation of the subsequent processing work is ensured.
Description
Technical Field
The utility model relates to the technical field of ferrosilicon production, in particular to an original batching system device for ferrosilicon production.
Background
Ferrosilicon is an iron alloy consisting of iron and silicon. Ferrosilicon is ferrosilicon alloy produced by using coke, steel scraps and quartz (or silica) as raw materials and smelting the raw materials by an electric furnace. Silicon and oxygen are easily combined into silicon dioxide, so that ferrosilicon is often used as a deoxidizer in steelmaking, and a great amount of heat is released in the generation of SiO2, so that the deoxidizer is beneficial to the improvement of the temperature of molten steel. Meanwhile, the ferrosilicon can be used as an alloy element additive and widely applied to low alloy structural steel, spring steel, bearing steel, heat-resistant steel and electrical silicon steel, and is commonly used as a reducing agent in ferroalloy production and chemical industry.
Through retrieval, the raw material proportioning device for producing high-purity ferrosilicon disclosed by publication No. CN215877172U comprises a mixing box, wherein the mixing box is fixed on a supporting frame, a feed inlet is formed in the upper end face of the mixing box, a feed hopper is arranged at the feed inlet, a first stirring component and a second stirring component are respectively arranged in an inner cavity of the mixing box, a discharge bin is arranged at the bottom of the mixing box, and a discharge pipe is arranged at the discharge hole of the discharge bin; the stirring leaf subassembly that adopts can realize stirring intensive mixing to the raw and other materials after mixing, can effectually prevent that the raw and other materials from appearing the caking phenomenon, further improves follow-up processingquality.
Among the above-mentioned technical scheme, adopt stirring leaf subassembly can realize the raw and other materials stirring intensive mixing after mixing, can effectually prevent that the raw and other materials from appearing the caking phenomenon, but above-mentioned technical scheme is in the use, just can't thoroughly carry out crushing treatment to the raw and other materials of caking through stirring leaf subassembly, still can exist some small caking groups in the material that leads to finally mixing, cause the whole quality after the raw and other materials to mix to descend, influence subsequent processing work, consequently, we provide and are arranged in the former feed proportioning system device of ferrosilicon production to solve the defect that exists among the above-mentioned technical scheme.
Disclosure of utility model
The utility model provides an original batching system device for ferrosilicon production, which is used for solving the technical problems in the background technology.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a former batching system device for ferrosilicon production, includes the workstation, workstation top fixed mounting has the batching box, batching box inside fixed mounting has the batching inner tube, batching inner tube top fixed mounting has driving motor, the inside bull stick that is equipped with of batching inner tube, bull stick outside fixed cover is equipped with the installation festival that equidistant distribution about a plurality of is, equal fixed mounting in installation festival both sides has the support pole, the equal fixed cover in support pole both sides is equipped with the spacing ring, be equipped with rotatory roller between the spacing ring, fixed mounting has a plurality of evenly distributed's crushing blade on the rotatory roller, the bin outlet has been seted up to batching inner tube bottom is fixed, the fixed cover in bin outlet outside is equipped with the electrically controlled valve.
Preferably, the top of the rotating rod is fixedly connected with the output end of the driving motor, the rotating roller is sleeved on the outer side of the supporting round rod, and the rotating roller is in rotary connection with the supporting round rod.
Preferably, the feed inlet is fixedly arranged at the top of the rear end of the batching box, the sealing plate is arranged at the top of the feed inlet, a dust removing box is fixedly arranged at the top of one side of the batching box, a communicating pipe is fixedly arranged at the top of the dust removing box, an air extracting pump is fixedly sleeved at the outer side of the communicating pipe, an air outlet is fixedly arranged at the bottom of one side of the dust removing box, and a plurality of filter screens which are distributed at equal intervals up and down are fixedly arranged in the dust removing box.
Preferably, the sealing plate is rotatably connected with the top of the feed inlet through a hinge, the feed inlet is communicated with the batching inner cylinder, and the dust removal box is communicated with the inside of the batching inner cylinder through a communicating pipe arranged at the top.
Preferably, four corners of the bottom of the workbench are fixedly provided with supporting legs, a collecting cabinet is fixedly arranged between the supporting legs at the bottom of the workbench, a slot is fixedly formed in the front end of the collecting cabinet, sliding grooves are fixedly formed in the inner walls of the two sides of the front end of the slot, a collecting drawer is arranged in the slot, a baffle is fixedly arranged at the front end of the collecting drawer, and sliding rods are fixedly arranged on the two sides of the collecting drawer.
Preferably, the collecting drawer is in sliding connection with sliding grooves formed in the inner walls of the two sides of the inside of the slot through sliding rods arranged on the two sides, and the top of the collecting cabinet is communicated with a discharge hole formed in the bottom of the batching inner cylinder.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the driving motor, the rotating rod, the mounting sections, the supporting round rod, the rotating roller and the crushing blades are used in a matched manner, the raw materials for producing the ferrosilicon are added into the batching inner cylinder through the feeding hole, then the driving motor is started to drive the rotating rod to rotate, so that the rotating rod drives the plurality of mounting sections to rotate together, at the moment, the rotating roller sleeved outside the supporting round rod rotates under the limiting effect of the limiting ring and the friction effect of the raw materials, and the crushing blades are used for crushing the agglomerated raw materials, so that the breakage quality of the agglomerated raw materials is ensured, and when the raw batching system device for producing the ferrosilicon is used, the agglomerated raw materials can be thoroughly crushed, the agglomeration clusters with smaller volume are prevented from being present in the finally mixed materials, the integral quality of the mixed raw materials is improved, and the normal operation of subsequent processing work is ensured.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic view of an assembling structure of a collecting drawer according to the present utility model.
Fig. 3 is a schematic diagram of the front view of the interior of the dust-removing box of the present utility model.
FIG. 4 is a schematic diagram of the internal front view of the dosing inner barrel of the present utility model.
Fig. 5 is a schematic view of the structure of the rotating roller of the present utility model.
In the figure: 1. a work table; 101. a support leg; 102. a collection cabinet; 103. slotting; 104. a chute; 105. a collection drawer; 106. a slide bar; 107. a baffle; 2. a batching box; 201. a feed inlet; 202. a sealing plate; 203. a dust removal box; 204. an air outlet; 205. a filter screen; 206. a communicating pipe; 207. an air extracting pump; 3. a batching inner cylinder; 301. a driving motor; 302. a rotating rod; 303. a mounting section; 304. supporting the round rod; 305. a limiting ring; 306. a rotating roller; 307. crushing blades; 308. a discharge port; 309. an electrically controlled valve.
Detailed Description
Referring to fig. 1-5, an original batching system device for ferrosilicon production comprises a workbench 1, a batching box 2 is fixedly arranged at the top of the workbench 1, a batching inner cylinder 3 is fixedly arranged in the batching box 2, a driving motor 301 is fixedly arranged at the top of the batching inner cylinder 3, a rotating rod 302 is arranged in the batching inner cylinder 3, a plurality of mounting joints 303 which are distributed at equal intervals up and down are fixedly sleeved outside the rotating rod 302, supporting round rods 304 are fixedly arranged on two sides of the mounting joints 303, limiting rings 305 are fixedly sleeved on two sides of the supporting round rods 304, rotating rollers 306 are arranged between the limiting rings 305, a plurality of uniformly distributed crushing blades 307 are fixedly arranged on the rotating rollers 306, a discharging opening 308 is fixedly formed in the bottom of the batching inner cylinder 3, and an electric control valve 309 is fixedly sleeved outside the discharging opening 308.
The top of the rotating rod 302 is fixedly connected with the output end of the driving motor 301, the rotating roller 306 is sleeved on the outer side of the supporting round rod 304, the rotating roller 306 is connected with the supporting round rod 304 in a rotating mode, the driving motor 301 is started to drive the rotating rod 302 to rotate, the rotating rod 302 drives the plurality of mounting joints 303 to rotate together, at the moment, the rotating roller 306 sleeved on the outer side of the supporting round rod 304 rotates under the limiting effect of the limiting ring 305 and the raw material friction effect, and the agglomerated raw material is crushed through the crushing blades 307, so that the breakage quality of the agglomerated raw material is guaranteed.
Wherein, batching box 2 rear end top fixed mounting has feed inlet 201, feed inlet 201 top is equipped with closing plate 202, batching box 2 one side top fixed mounting has dust removal case 203, dust removal case 203 top fixed mounting has communicating pipe 206, communicating pipe 206 outside fixed cover is equipped with aspiration pump 207, air outlet 204 has been seted up to dust removal case 203 one side bottom fixed, dust removal case 203 inside fixed mounting has a plurality of filter screen 205 that is equidistant distribution from top to bottom, closing plate 202 passes through hinge and feed inlet 201 top swivelling joint, feed inlet 201 and batching inner tube 3 intercommunication, and dust removal case 203 passes through communicating pipe 206 and batching inner tube 3 inside intercommunication that the top set up, the closing plate 202 is opened to the processing personnel, add the ferrosilicon raw materials into batching inner tube 3 through feed inlet 201, after the injection is accomplished, make batching inner tube 3 inside be in sealed state, prevent that the dust from drifting out through feed inlet 201, at the in-process that the raw materials mixes, can produce the dust, at this moment, through starting pump 207 can add the dust that produces in dust through 206 in dust removal case 203, after the multiple filtration of filter screen 205, finally discharge through air outlet 204, guarantee that working environment is clean, the health of the workman is avoided.
The four corners of the bottom of the workbench 1 are fixedly provided with the supporting legs 101, the bottom of the workbench 1 is fixedly provided with the collecting cabinet 102 between the supporting legs 101, the front end of the collecting cabinet 102 is fixedly provided with the grooves 103, the inner walls of the two sides of the inside of the grooves 103 are fixedly provided with the sliding grooves 104, the inside of the grooves 103 is provided with the collecting drawer 105, the front end of the collecting drawer 105 is fixedly provided with the baffle 107, the two sides of the collecting drawer 105 are fixedly provided with the sliding bars 106, the collecting drawer 105 is in sliding connection with the sliding grooves 104 arranged on the inner walls of the two sides of the inside of the grooves 103 through the sliding bars 106 arranged on the two sides, the top of the collecting cabinet 102 is communicated with the discharge opening 308 arranged at the bottom of the batching inner barrel 3, the mixed material is discharged into the collecting drawer 105 arranged inside the collecting cabinet 102 through the opened electric control valve 309, after the whole batching of the raw material is finished, the processing staff can withdraw the collecting drawer 105 from the grooves 103 through pulling the hand-pulling bars arranged at the front end of the baffle 107, so that the processing staff can conveniently conduct the next processing work.
The specific operation mode of the utility model is as follows:
firstly, the sealing plate 202 is opened by a processing personnel, ferrosilicon production raw materials are added into the batching inner cylinder 3 through the feeding port 201, after the injection is completed, the sealing plate 202 is closed, the inside of the batching inner cylinder 3 is in a sealing state, dust is prevented from drifting out through the feeding port 201, then the driving motor 301 is started to drive the rotating rod 302 to rotate, the rotating rod 302 drives the plurality of mounting nodes 303 to rotate together, at the moment, the rotating roller 306 sleeved outside the supporting round rod 304 rotates under the limiting effect of the limiting ring 305 and the friction effect of raw materials, the agglomerated raw materials are crushed through the crushing blade 307, so that the breakage quality of the agglomerated raw materials is ensured, dust is generated in the raw materials mixing process, at the moment, the generated dust can be added into the dust removing box 203 through the communicating pipe 206 by starting the sucking pump 207, after the multiple filtration of the filter screen 205, the dust is finally discharged through the air outlet 204, the influence of the dust on the health of workers is avoided, the mixed raw materials are discharged into the collecting drawer 105 through the opened electric control valve 308, the collecting drawer 105 is intensively arranged, the raw materials are collected through the collecting drawer 103, and the raw materials are completely processed through the collecting drawer 105 after the raw materials are completely, and the raw materials are pulled out through the pulling the front end of the collecting drawer 105, so that the raw materials are conveniently processed through the drawer 107.
Claims (6)
1. Be used for former feed proportioning system device of ferrosilicon production, including workstation (1), its characterized in that: the automatic feeding device is characterized in that a batching box (2) is fixedly arranged at the top of the workbench (1), a batching inner cylinder (3) is fixedly arranged in the batching box (2), a driving motor (301) is fixedly arranged at the top of the batching inner cylinder (3), a rotating rod (302) is arranged in the batching inner cylinder (3), a plurality of mounting joints (303) which are distributed at equal intervals up and down are fixedly sleeved on the outer side of the rotating rod (302), supporting round rods (304) are fixedly arranged on two sides of the mounting joints (303), limiting rings (305) are fixedly sleeved on two sides of the supporting round rods (304), rotating rollers (306) are arranged between the limiting rings (305), crushing blades (307) which are uniformly distributed are fixedly arranged on the rotating rollers (306), a discharging opening (308) is fixedly formed in the bottom of the batching inner cylinder (3), and an electric control valve (309) is fixedly sleeved on the outer side of the discharging opening (308).
2. The raw batch system apparatus for ferrosilicon production according to claim 1, wherein: the top of the rotating rod (302) is fixedly connected with the output end of the driving motor (301), the rotating roller (306) is sleeved on the outer side of the supporting round rod (304), and the rotating roller (306) is rotatably connected with the supporting round rod (304).
3. The raw batch system apparatus for ferrosilicon production according to claim 1, wherein: the novel dust collector is characterized in that a feed inlet (201) is fixedly arranged at the top of the rear end of the batching box (2), a sealing plate (202) is arranged at the top of the feed inlet (201), a dust collection box (203) is fixedly arranged at the top of one side of the batching box (2), a communicating pipe (206) is fixedly arranged at the top of the dust collection box (203), an air suction pump (207) is fixedly sleeved outside the communicating pipe (206), an air outlet (204) is fixedly formed in the bottom of one side of the dust collection box (203), and a plurality of filter screens (205) which are distributed at equal intervals are fixedly arranged inside the dust collection box (203).
4. A raw material batching system according to claim 3 wherein: the sealing plate (202) is rotationally connected with the top of the feed inlet (201) through a hinge, the feed inlet (201) is communicated with the batching inner cylinder (3), and the dust removal box (203) is communicated with the inside of the batching inner cylinder (3) through a communicating pipe (206) arranged at the top.
5. The raw batch system apparatus for ferrosilicon production according to claim 1, wherein: four corners of workstation (1) bottom are equal fixed mounting have landing leg (101), workstation (1) bottom just is located between landing leg (101) fixed mounting and collects cabinet (102), collection cabinet (102) front end is fixed to be seted up fluting (103), all fixed spout (104) of having seted up on the inside both sides inner wall of fluting (103), the inside collection steamer tray (105) that is equipped with of fluting (103), collection steamer tray (105) front end fixed mounting has baffle (107), the equal fixed mounting in collection steamer tray (105) both sides has slide bar (106).
6. The raw batch system apparatus for ferrosilicon production according to claim 5, wherein: the collection drawer (105) is in sliding connection with sliding grooves (104) formed in the inner walls of the two sides of the inside of the slot (103) through sliding rods (106) arranged on the two sides, and the top of the collection cabinet (102) is communicated with a discharge opening (308) formed in the bottom of the batching inner cylinder (3).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202322386916.2U CN220919454U (en) | 2023-09-04 | 2023-09-04 | Raw material preparation system device for ferrosilicon production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202322386916.2U CN220919454U (en) | 2023-09-04 | 2023-09-04 | Raw material preparation system device for ferrosilicon production |
Publications (1)
Publication Number | Publication Date |
---|---|
CN220919454U true CN220919454U (en) | 2024-05-10 |
Family
ID=90934943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202322386916.2U Active CN220919454U (en) | 2023-09-04 | 2023-09-04 | Raw material preparation system device for ferrosilicon production |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN220919454U (en) |
-
2023
- 2023-09-04 CN CN202322386916.2U patent/CN220919454U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205868384U (en) | Crushing and drying all -in -one | |
CN220919454U (en) | Raw material preparation system device for ferrosilicon production | |
CN109129878A (en) | A kind of preparation facilities of ceramic material | |
CN219682840U (en) | Magnetic separator for carbon black processing | |
CN107930502A (en) | A kind of silica gel production stock stirring device | |
CN112275206A (en) | Paint stirring machine convenient for uniformly stirring paint | |
CN209188672U (en) | A kind of agitating device of concrete accelerator | |
CN102847580A (en) | Automatic pulverizer for coal sample | |
CN212795360U (en) | Hollow brick apparatus for producing | |
CN202778594U (en) | Automatic coal sample pulverizing machine | |
CN209660380U (en) | A kind of spiral algae sheet process units | |
CN112452186A (en) | Biomass energy particle production is with even compounding dust collecting equipment | |
CN204952725U (en) | Stirring formula industrial material heating edulcoration device | |
CN221706201U (en) | Melting furnace waste residue gathering processing apparatus | |
CN210875657U (en) | Coarse lump material crushing device for silicon carbide micro powder | |
CN218047328U (en) | Dosing unit of organic liquid boron fertilizer | |
CN214599634U (en) | Spherical graphite apparatus for producing | |
CN217555246U (en) | Sealed dust removal feeding device | |
CN221287785U (en) | Equipment is added in preparation of molten silicon miropowder | |
CN213811833U (en) | Biochar pig feed cooling device | |
CN221116075U (en) | Welding wire steel refining device | |
CN212241679U (en) | Mixer discharging device is used in silicon rubber goods production | |
CN221359708U (en) | High-efficient stirring fertilization jar | |
CN218077524U (en) | A mix machine for preparing high-quality novel fodder | |
CN222021984U (en) | Plastic color mixing machine with screen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |