CN114950646B - Raw material processing energy-saving pulverizer for cosmetic production - Google Patents
Raw material processing energy-saving pulverizer for cosmetic production Download PDFInfo
- Publication number
- CN114950646B CN114950646B CN202210525959.1A CN202210525959A CN114950646B CN 114950646 B CN114950646 B CN 114950646B CN 202210525959 A CN202210525959 A CN 202210525959A CN 114950646 B CN114950646 B CN 114950646B
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- Prior art keywords
- grinding
- milling machine
- mill
- inner cavity
- main body
- Prior art date
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- 239000002994 raw material Substances 0.000 title claims abstract description 32
- 239000002537 cosmetic Substances 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 84
- 238000003801 milling Methods 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000003913 materials processing Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 14
- 239000011147 inorganic material Substances 0.000 abstract description 14
- 239000000843 powder Substances 0.000 abstract description 10
- 235000013312 flour Nutrition 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000429 assembly Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/004—Shape or construction of rollers or balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/06—Mills with rollers forced against the interior of a rotary ring, e.g. under spring action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to the technical field of flour mill equipment, and discloses an energy-saving flour mill for raw material processing for cosmetic production, which comprises a flour mill main body, wherein a transmission main shaft extending to the bottom of the middle part of an inner cavity of the flour mill main body is movably sleeved at the middle part of the outer surface of the transmission main shaft, a connecting plate is fixedly sleeved at the top of the inner cavity of the flour mill main body, and a grinding roller assembly is fixedly sleeved at the inner part of the periphery of the connecting plate and below the inner cavity of the flour mill main body. This a raw materials processing energy-conserving milling machine for cosmetics production is to the setting of grinding ring and toper mill outer structure, can effectively increase the effective area of contact between grinding surface and the inorganic material in this milling machine, makes it have higher grinding efficiency to the inorganic material, simultaneously, the setting of cooperation scraper blade can effectively arouse on being located the inclined plane of grinding ring of the deposited powder raw materials in milling machine main part inner chamber bottom, further improves this milling machine to the grinding efficiency of inorganic powder raw materials.
Description
Technical Field
The invention relates to the technical field of pulverizer equipment, in particular to an energy-saving pulverizer for raw material processing for cosmetic production.
Background
Inorganic materials are used as main raw materials for producing powdery cosmetics, mainly comprising talcum powder, kaolin, silicon powder and the like, but the particle size of the inorganic materials cannot meet the requirement of producing powdery cosmetics due to the influence of various factors when the inorganic materials are produced in nature, so that the raw materials are required to be ground in the process of producing the inorganic materials into cosmetics so that the particle size of the inorganic materials meets the requirement of producing cosmetics.
Among them, in patent publication No. (CN 112371295 a), a special flour mill for calcium hydroxide is disclosed, and the flour milling treatment for the calcium hydroxide raw material is realized by using the driving grinding disc 19 and the driven grinding disc 20 on the special flour mill, but the grinding mill is affected by the granularity of the raw material in the grinding treatment process, so that the driving grinding disc 19 can cause high-strength extrusion impact on the driven grinding disc 20 in the high-speed rotation process, and cause different degrees of abrasion on the surface of the grinding mill, thereby further causing the grinding quality of the grinding mill for the raw material to be poor and the efficiency to be low, and meanwhile, the service life of the grinding disc in the grinding mill is greatly affected, and the stability and reliability are poor.
Therefore, there is a need for a mill structure for powder cosmetic materials, which overcomes the drawbacks of the prior mill during use.
Disclosure of Invention
The invention provides a raw material processing energy-saving pulverizer for cosmetic production, which has the advantages of capability of adaptively adjusting the mutual pressure between upper millstones according to the granularity of raw materials without causing larger impact influence on the raw materials, higher quality and efficiency of grinding the raw materials, better stability and reliability and longer service life, and solves the problems that the prior pulverizer is influenced by the granularity of the raw materials in the grinding process, so that higher-strength extrusion impact can be generated between the millstones, different degrees of abrasion are caused on the surfaces of the millstones, further the grinding quality of the pulverizer on the raw materials is deteriorated and the efficiency of the pulverizer is lowered, and meanwhile, the service life of the millstones in the pulverizer, the stability and the reliability of the pulverizer are greatly influenced.
The invention provides the following technical scheme: the utility model provides an energy-conserving milling machine of raw materials processing for cosmetics production, includes the milling machine main part, the middle part activity of milling machine main part inner chamber has cup jointed the transmission main shaft that extends to its bottom, the middle part of transmission main shaft surface just is located the fixed connection plate that cup joints at the top of milling machine main part inner chamber, connect the peripheral inside of plate and be located the fixed grinding roller subassembly that cup joints in below of milling machine main part inner chamber, the bottom of transmission main shaft surface just is located the below fixed mounting of milling machine main part inner chamber has a plurality of groups scraper blades, the inside of milling machine main part bottom is equipped with the air pipe that is linked together with its inner chamber, the bottom of milling machine main part inner wall is equipped with the grinding ring that just transversal right trapezoid structure is personally submitted with grinding roller subassembly's bottom.
Preferably, the grinding roller assembly comprises a connecting shaft, the top of the connecting shaft is fixedly arranged in the connecting plate, a disc spring is fixedly sleeved at the bottom of the outer surface of the connecting shaft, a group of limiting jackets are fixedly sleeved on the outer surface of the connecting shaft and positioned on the upper side and the lower side of the disc spring respectively, and a conical grinding disc is fixedly sleeved on the outer surface of the disc spring.
Preferably, the outer part of the conical millstone is in a structural arrangement mode with a big top and a small bottom, and simultaneously, the inclined edges of the conical millstone and the inclined edges of the right trapezoid structural millstone are the same in inclination angle and are correspondingly arranged.
Preferably, the outer diameter of the limiting jacket is smaller than the inner diameter of the conical millstone so that the conical millstone can press the belleville spring inwards when being pressed by high strength.
Preferably, the bottom ends of the scrapers are contacted with the bottom of the inner cavity of the main body of the pulverizer, and the tops of the scrapers extend obliquely to the position right above the inclined plane of the grinding ring on the main body of the pulverizer.
The invention has the following beneficial effects:
1. this a raw materials processing energy-conserving milling machine for cosmetics production is to grinding roller subassembly and the setting of structure on, when the great inorganic material of granularity appears therein, but the back extrusion toper mill of effect under the grinding ring for the toper mill can inwards remove in order to overcome the centrifugal force influence that it received and extrude the belleville spring, in order to force the clearance grow between the surface of toper mill and the grinding ring inner wall, can effectively alleviate the violent impact abrasion that the great inorganic powder material of granularity caused to toper mill or grinding ring abrasive surface, in order to make grinding ring or toper mill have longer life, and grinding quality and efficiency are higher to inorganic material, stability and reliability are better.
2. This a raw materials processing energy-conserving milling machine for cosmetics production is to the setting of grinding ring and toper mill outer structure, can effectively increase the effective area of contact between grinding surface and the inorganic material in this milling machine, makes it have higher grinding efficiency to the inorganic material, simultaneously, the setting of cooperation scraper blade can effectively arouse on being located the inclined plane of grinding ring of the deposited powder raw materials in milling machine main part inner chamber bottom, further improves this milling machine to the grinding efficiency of inorganic powder raw materials.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the construction of the grinding roller assembly of the present invention;
fig. 3 is a partial elevation view of the structure of the present invention.
In the figure: 1. a mill body; 2. a transmission main shaft; 3. connecting the plates; 4. a grinding roller assembly; 5. a scraper; 6. a ventilation duct; 7. a grinding ring; 8. a connecting shaft; 9. a belleville spring; 10. a limiting jacket; 11. conical millstone.
Description of the embodiments
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, an energy-saving pulverizer for raw material processing for cosmetic production comprises a pulverizer main body 1, wherein a transmission main shaft 2 extending to the bottom of the pulverizer main body 1 is movably sleeved in the middle of the inner cavity of the pulverizer main body 1, a transmission connection is formed between the bottom end of the transmission main shaft 2 and a prime mover, the middle of the outer surface of the transmission main shaft 2 is fixedly sleeved with a connecting plate 3 at the top of the inner cavity of the pulverizer main body 1, a plurality of groups of grinding roller assemblies 4 distributed in an annular array are fixedly sleeved in the lower part of the inner cavity of the pulverizer main body 1, a plurality of groups of scraping plates 5 distributed in an annular array are fixedly mounted at the bottom of the outer surface of the transmission main shaft 2 and are sequentially staggered with the grinding roller assemblies 4 on the connecting plate 3, a ventilating pipeline 6 communicated with the inner cavity of the pulverizer main body 1 is arranged in a vortex-shaped line structure, one end of the ventilating pipeline 6 is communicated with an air pump and high-pressure airflow is conveyed to the bottom of the inner cavity of the pulverizer main body 1 so as to prevent cosmetic from depositing at the bottom of the pulverizer main body 1, and a right-angle trapezoid-shaped cross section grinding ring 7 matched with the bottom of the grinding roller assemblies 4 is arranged at the bottom of the inner wall of the pulverizer main body 1.
As shown in fig. 2, in the technical scheme, the grinding roller assembly 4 comprises a connecting shaft 8 with the top fixedly installed in the connecting plate 3, a disc spring 9 is fixedly sleeved at the bottom of the outer surface of the connecting shaft 8, a group of limiting jackets 10 are fixedly sleeved on the outer surface of the connecting shaft 8 and positioned on the upper side and the lower side of the disc spring 9 respectively, and a conical grinding disc 11 is fixedly sleeved on the outer surface of the disc spring 9.
As shown in fig. 3, in this technical solution, the outer part of the conical grinding disc 11 is in a structure arrangement mode with a big top and a small bottom, and at the same time, the inclined edges of the conical grinding disc and the inclined edges of the right trapezoid structure grinding ring 7 are the same in inclination angle and are correspondingly arranged.
In the technical scheme, the outer diameter of the limiting jacket 10 is smaller than the inner diameter of the conical grinding disc 11, so that the conical grinding disc 11 can extrude the disc spring 9 inwards when being extruded with higher strength, and the impact of the conical grinding disc 11 on the large inorganic powder raw material particles during high-speed rotation is effectively reduced, so that severe extrusion impact is caused on the grinding surface of the grinding ring 7 or the grinding surface of the grinding ring, and abrasion with different degrees cannot be caused on the surface of the grinding ring.
In this technical scheme, contact each other between the bottom of scraper blade 5 and the bottom of milling machine main part 1 inner chamber, and its top slope extends to milling machine main part 1 on the milling ring 7 inclined plane directly over, and scraper blade 5 is used for exciting the deposited powder raw materials in milling machine main part 1 inner chamber bottom, and then effectively improves this milling machine to inorganic powder raw materials's grinding efficiency.
The application method and the working principle of the embodiment are as follows:
when the pulverizer is required to be started to perform pulverizing operation on cosmetic raw materials, a prime mover is started, the connecting plate 3 and the grinding roller assembly 4 on the connecting plate are driven by the transmission main shaft 2 to rotate clockwise, and then inorganic materials are put into the pulverizer main body 1, so that the inorganic materials are in friction contact with the inner side of the grinding ring 7 under the action of the grinding roller assembly 4 rotating at a high speed, and the grinding operation on the inorganic materials is further realized;
when the material with larger granularity appears in the grinding machine, the conical grinding disc 11 is reversely extruded under the action of the grinding ring 7, so that the conical grinding disc 11 can move inwards to overcome the influence of centrifugal force applied to the conical grinding disc 11 and extrude the disc spring 9, the gap between the outer surface of the conical grinding disc 11 and the inner wall of the grinding ring 7 is enlarged, and further, the severe impact abrasion of the inorganic powder material with larger granularity on the grinding surface of the conical grinding disc 11 or the grinding ring 7 is effectively relieved, and the grinding machine can keep good grinding quality in the long-term use process and has higher stability and reliability.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an energy-conserving milling machine of raw materials processing for cosmetics production, includes milling machine main part (1), the middle part activity of milling machine main part (1) inner chamber has cup jointed transmission main shaft (2) that extend to its bottom, the middle part of transmission main shaft (2) surface just is located the fixed connection plate (3) that cup joints in top of milling machine main part (1) inner chamber, its characterized in that:
the grinding mill comprises a mill body (1), a connecting plate (3), a grinding roller assembly (4) and a plurality of groups of scrapers (5), wherein the inner part of the periphery of the connecting plate (3) is positioned below the inner cavity of the mill body (1), the grinding roller assembly (4) is fixedly sleeved at the bottom of the outer surface of the transmission main shaft (2), a plurality of groups of scrapers (5) are fixedly arranged below the inner cavity of the mill body (1), a ventilating pipeline (6) communicated with the inner cavity of the mill body is arranged inside the bottom end of the mill body (1), and a grinding ring (7) which is matched with the bottom of the grinding roller assembly (4) and has a right trapezoid cross section is arranged at the bottom of the inner wall of the mill body (1);
the grinding roller assembly (4) comprises a connecting shaft (8) with the top fixedly arranged in the connecting plate (3), a disc spring (9) is fixedly sleeved at the bottom of the outer surface of the connecting shaft (8), a group of limiting jackets (10) are fixedly sleeved on the outer surface of the connecting shaft (8) and positioned on the upper side and the lower side of the disc spring (9) respectively, and a conical grinding disc (11) is fixedly sleeved on the outer surface of the disc spring (9).
2. The raw material processing energy-saving pulverizer for cosmetic production according to claim 1, wherein: the outer part of the conical millstone (11) is in a structural arrangement mode with a large upper part and a small lower part, and simultaneously, the inclined edges of the conical millstone and the inclined edges of the right trapezoid structural millstone (7) are the same in inclination angle and are correspondingly arranged.
3. The raw material processing energy-saving pulverizer for cosmetic production according to claim 2, wherein: the outer diameter of the limiting jacket (10) is smaller than the inner diameter of the conical grinding disc (11) so that the conical grinding disc (11) can press the disc spring (9) inwards when being pressed by high strength.
4. A raw material processing energy-saving pulverizer for cosmetic production according to claim 3, characterized in that: the bottom of the scraping plate (5) is contacted with the bottom of the inner cavity of the mill main body (1), and the top of the scraping plate is obliquely extended to the position right above the inclined surface of the grinding ring (7) on the mill main body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210525959.1A CN114950646B (en) | 2022-05-16 | 2022-05-16 | Raw material processing energy-saving pulverizer for cosmetic production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210525959.1A CN114950646B (en) | 2022-05-16 | 2022-05-16 | Raw material processing energy-saving pulverizer for cosmetic production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114950646A CN114950646A (en) | 2022-08-30 |
| CN114950646B true CN114950646B (en) | 2024-03-08 |
Family
ID=82984112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210525959.1A Active CN114950646B (en) | 2022-05-16 | 2022-05-16 | Raw material processing energy-saving pulverizer for cosmetic production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114950646B (en) |
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|---|---|---|---|---|
| GB773362A (en) * | 1954-11-22 | 1957-04-24 | Babcock & Wilcox Ltd | Improvements in roller mills |
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| CN103537343A (en) * | 2013-11-05 | 2014-01-29 | 长沙深湘通用机器有限公司 | Roll mill |
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| CN107321446A (en) * | 2017-08-08 | 2017-11-07 | 江苏鹏飞集团股份有限公司 | The vertical pulverizer lapping device of twin-stage grinding |
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| CN210303825U (en) * | 2019-07-03 | 2020-04-14 | 济源市宏鑫实业有限公司 | Powder additive production equipment |
| CN111203304A (en) * | 2020-03-13 | 2020-05-29 | 广东立伟达矿业有限公司 | Powder mill for preparing calcium carbonate powder |
| CN111282646A (en) * | 2020-03-31 | 2020-06-16 | 郑州美俊机械设备有限公司 | Guarantee broken coal even device in small, broken bits of even granularity |
| CN112452446A (en) * | 2020-10-21 | 2021-03-09 | 林美圆 | Reduce energy-concerving and environment-protective cement processing layering reducing mechanism's wearing and tearing |
-
2022
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| GB773362A (en) * | 1954-11-22 | 1957-04-24 | Babcock & Wilcox Ltd | Improvements in roller mills |
| CA2067869A1 (en) * | 1991-05-02 | 1992-11-03 | Robert L. Parham | Cast Plunger Can and Spring Compressor |
| CN201132126Y (en) * | 2007-11-30 | 2008-10-15 | 洛阳巨力机械制造有限公司 | Pre-grinding mill |
| CN103394396A (en) * | 2013-08-20 | 2013-11-20 | 湖南中宏重型机器有限公司 | Spring-catch mechanism for adjusting distance between hammer wheel and milled ring of vertical ring mill |
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| CN103769275A (en) * | 2014-01-02 | 2014-05-07 | 廖贻勇 | Crank pendulum type grinder |
| CN104437757A (en) * | 2014-09-23 | 2015-03-25 | 南京凯盛国际工程有限公司 | Pre-grinding vertical mill |
| CN104707690A (en) * | 2015-03-13 | 2015-06-17 | 桂林晟兴机械制造有限公司 | Oblique swing pressurization external circulation mill |
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| CN205966039U (en) * | 2016-08-25 | 2017-02-22 | 桂林矿山机械有限公司 | Fine powder mill |
| CN106362833A (en) * | 2016-11-17 | 2017-02-01 | 河南黎明重工科技股份有限公司 | Rotary-ring mill |
| CN106902926A (en) * | 2017-04-26 | 2017-06-30 | 郑州大学 | One kind pulverizes formula winnowing machine |
| CN107321446A (en) * | 2017-08-08 | 2017-11-07 | 江苏鹏飞集团股份有限公司 | The vertical pulverizer lapping device of twin-stage grinding |
| CN210146176U (en) * | 2019-05-31 | 2020-03-17 | 广州医科大学附属第三医院 | Milling equipment is used in traditional chinese medicine processing |
| CN210303825U (en) * | 2019-07-03 | 2020-04-14 | 济源市宏鑫实业有限公司 | Powder additive production equipment |
| CN111203304A (en) * | 2020-03-13 | 2020-05-29 | 广东立伟达矿业有限公司 | Powder mill for preparing calcium carbonate powder |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114950646A (en) | 2022-08-30 |
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