CN220610737U - Spodumene powder preparation system - Google Patents
Spodumene powder preparation system Download PDFInfo
- Publication number
- CN220610737U CN220610737U CN202321864441.7U CN202321864441U CN220610737U CN 220610737 U CN220610737 U CN 220610737U CN 202321864441 U CN202321864441 U CN 202321864441U CN 220610737 U CN220610737 U CN 220610737U
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- China
- Prior art keywords
- vertical mill
- dust collector
- belt feeder
- feeding
- spodumene
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- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910052642 spodumene Inorganic materials 0.000 title claims abstract description 52
- 239000000843 powder Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000428 dust Substances 0.000 claims abstract description 49
- 238000000227 grinding Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000007664 blowing Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims description 24
- 239000002893 slag Substances 0.000 claims description 5
- 238000009472 formulation Methods 0.000 claims 6
- 239000000203 mixture Substances 0.000 claims 6
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 4
- 239000011707 mineral Substances 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 229910001648 diaspore Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Abstract
The utility model belongs to the technical field of mineral grinding, and particularly relates to a spodumene powder preparation system. A spodumene powder preparation system comprises a conveying system, a grinding system and a collecting system; the conveying system comprises a raw material bin, a quantitative belt feeder, a long belt feeder, a lifting machine, a vertical mill feeding device and a material returning belt feeder; the grinding system comprises a vertical mill and a hot air blowing device; the collecting system comprises a cyclone dust collector, a bag type dust collector and a finished product bin. The spodumene powder collection device has the advantages that the spodumene after roasting can be transported through the conveying system, ground and selected through the grinding system, and finished spodumene powder is collected through the collecting system and then conveyed to the finished product bin, so that the next-stage extraction process is convenient, and the spodumene powder collection device has the advantages of being high in efficiency, high in fineness, low in energy consumption, economical and reasonable and the like.
Description
Technical Field
The utility model belongs to the technical field of mineral grinding, and particularly relates to a spodumene powder preparation system.
Background
Spodumene is one of the main lithium-containing minerals, and is widely applied to industries such as lithium chemical industry, glass, ceramics and the like as a raw material of lithium chemicals, and lithium in a new energy lithium battery is also extracted from the lithium-containing mineral. The spodumene extraction method mainly uses a sulfuric acid method, and generally comprises the processes of spodumene roasting and conversion, spodumene clinker fine grinding, powder mixed acid, clinker acidification and roasting, clinker leaching and washing, slurry solid-liquid separation, purification liquid evaporation concentration, lithium precipitation and the like. As the front-end process for extracting lithium from spodumene, proper grinding fineness is critical to the subsequent flotation effect, and the granularity of lithium ore generally needs to be ground to 200 meshes to obtain a better flotation effect, and the uniformity of mixed materials in the downstream production process can be better ensured. The existing equipment mainly used for spodumene grinding is a ball mill and an European mill, but when materials with higher Mohs hardness such as spodumene are ground, the ball mill and the European mill have the problems of low productivity, high energy consumption, high noise, short service life, serious influence on the quality of finished powder and the like.
Along with the development of new energy industry, the demand of spodumene powder is greatly improved, and a spodumene powder preparation system is needed to be designed, in the whole powder preparation process, a vertical mill is selected as grinding main equipment, and three systems of conveying, grinding and collecting are formed, so that the spodumene powder preparation system has the advantages of high efficiency, high yield, low energy consumption, stable operation and the like, and the cost of a production line is reduced while the automation of spodumene powder preparation is improved.
In addition, because spodumene mohs hardness is higher, when feeding mechanism passes through the chute and carries spodumene raw materials to the mill top of the vertical mill, be limited by factors such as the density of the material that need grind, granularity, viscosity, water content, etc. the parabola that need grind the material from feed chute lower extreme export to the mill central point put of vertical mill is difficult to calculate accurately, need grind the material and be difficult for falling to the mill central point put of vertical mill to cause the material bed on the mill uneven, in spodumene grinding in-process, the vibration of vertical mill is great.
Disclosure of Invention
In order to solve at least one technical problem in the prior art, the spodumene powder preparation system with high efficiency, high yield, low energy consumption and stable operation is provided.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a spodumene powder preparation system comprises a conveying system, a grinding system and a collecting system; the conveying system comprises a raw material bin, a quantitative belt feeder, a long belt feeder, a lifting machine, a vertical mill feeding device and a material returning belt feeder; the grinding system comprises a vertical mill and a hot air blowing device; the collecting system comprises a cyclone dust collector, a bag type dust collector and a finished product bin;
the feeding end of the quantitative belt feeder extends to the discharging opening of the raw material bin, the discharging end of the quantitative belt feeder extends to the feeding end of the long belt feeder, the discharging end of the long belt feeder is connected with the feeding opening of the elevator, the feeding opening of the vertical mill feeder is respectively connected with the discharging opening of the elevator and the feeding opening of the vertical mill, the feeding end of the returning belt feeder extends to the slag discharging opening of the vertical mill, and the discharging end of the returning belt feeder is connected with the feeding opening of the elevator; the air outlet of the hot air blowing device is communicated with the air inlet of the vertical mill; the discharging port of the vertical mill is communicated with the feeding port of the cyclone dust collector through a pipeline, the discharging port of the cyclone dust collector is communicated with the feeding port of the bag type dust collector through a pipeline, and the discharging ports of the cyclone dust collector and the bag type dust collector are respectively communicated with a finished product bin.
Preferably, the vertical mill feeding device is a rotary air locking feeding machine.
Preferably, the feeding device of the vertical mill is a screw conveyor, and the discharging end of the screw conveyor extends into the vertical mill and is fixed on the inner wall of the vertical mill above the cone hopper or in the cone hopper.
Preferably, an arch breaker is arranged on the outer wall of the blanking port of the raw material bin, and the arch breaker is an air cannon.
Preferably, a discharge hole of the bag type dust collector is communicated with an air inlet of the negative pressure fan.
Preferably, the air outlet of the negative pressure fan is communicated with a pipeline between the air outlet of the hot air blowing device and the air inlet of the vertical mill through a return pipeline.
Preferably, the discharging openings of the cyclone dust collector and the bag type dust collector are respectively connected with a bin pump, and the finished powder in the cyclone dust collector and the bag type dust collector is respectively conveyed into a finished bin through the bin pumps. Compared with the prior art, the utility model has the beneficial effects that:
the three systems of conveying, grinding and collecting systems are formed by the belt conveyor, the lifting machine, the vertical mill, the cyclone powder collector, the pneumatic conveying equipment (bin pump) and the like, and the grinding efficiency and fineness are improved in the process, so that the energy consumption is reduced. The method can lead the spodumene after roasting to be transported to a finished product bin after the procedures of transportation, crushing and grinding, powder selection and collection, is convenient for the extraction process of the next stage, and has the advantages of high efficiency, high fineness, low energy consumption, economy, rationality and the like.
The feeding device of the vertical mill adopts a screw conveyor and extends to the inner fixing of the vertical mill, so that spodumene raw materials can be vertically fed in the vertical mill and fed to the center of the millstone, the uniformity of a material layer on the millstone is improved, and the problems that when the existing vertical mill grinds materials with higher Mohs hardness, vibration is large due to uneven material layer, equipment is easy to damage and the like are solved; in addition, the screw conveyor also solves the problem that when spodumene powder has larger water content, the feeding chute of the existing vertical mill is blocked.
By arranging the negative pressure fan, the conveying speed of the finished powder is increased so as to increase the powder collecting speed; the air outlet of the negative pressure fan is communicated with the air inlet of the vertical mill, so that the grinding and collecting system is in an internal circulation state, heat in the vertical mill is circulated, heat loss of the system is reduced, and the energy-saving effect is improved. The whole pulverizing system is in a negative pressure state, so that dust overflow is effectively prevented, and the production environment is greatly improved. The cyclone dust collector and the lower section of the bag type dust collector are both provided with bin pumps as pneumatic conveying equipment, and materials are directly conveyed into a finished powder bin.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present utility model.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present utility model.
Fig. 3 is a schematic structural diagram of embodiment 3 of the present utility model.
Fig. 4 is a schematic top view of the vertical mill feeding device and the vertical mill according to embodiments 2 and 3 of the present utility model.
Fig. 5 is a schematic front view of the vertical mill feeding device and the vertical mill according to the embodiments 2 and 3 of the present utility model.
In the figure: 11. raw material bin, 12, quantitative belt feeder, 13, long belt feeder, 14, lifting machine, 15, vertical mill feeding device, 16, returning belt feeder, 17, air cannon, 18, connecting frame, 21, vertical mill, 211, cone hopper, 212, millstone, 213, motor, 214, grinding roller, 215, separator, 216, vertical mill air inlet, 217, slag discharge port, 218, vertical mill discharge port, 22, hot air blowing device, 31, cyclone dust collector, 32, bag dust collector, 33, finished product bin, 34, bin pump, 35 and negative pressure fan.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to 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 thus should not be construed as limiting the present utility model.
Example 1
Referring to fig. 1, a spodumene powder preparation system comprises a conveying system, a grinding system and a collecting system; the conveying system comprises a raw material bin 11, a quantitative belt feeder 12, a long belt feeder 13, a lifting machine 14, a vertical mill feeding device 15 and a return belt feeder 16; the grinding system comprises a vertical mill 21 and a hot air blowing device 22; the collection system includes cyclone 31, bag house 32 and finished bin 33. The raw material bin 11 is internally stored with the baked spodumene raw material, and in order to avoid unsmooth discharging caused by arching of the spodumene raw material in the raw material bin 11, an arch breaker is arranged on the outer wall of a discharging opening of the raw material bin 11 and is an air cannon 17.
The quantitative belt feeder 12 is used for quantitative feeding, the feeding end of the quantitative belt feeder 12 extends to the feeding opening of the raw material bin 11, the feeding end of the quantitative belt feeder 12 extends to the feeding end of the long belt feeder 13, the feeding end of the long belt feeder 13 is connected with the feeding opening of the lifting machine 14 through a chute, and the lifting machine 14 is used for lifting materials. The vertical mill feeding device 15 is used for feeding a mill, the upper and lower feed inlets of the vertical mill feeding device are respectively connected with the feed inlet of the elevator 14 and the feed inlet of the vertical mill 21, the return belt conveyor 16 is used for returning the mill to the elevator 14, the feed end of the return belt conveyor extends to the slag discharge opening 217 of the vertical mill 21, and the feed end of the return belt conveyor 16 is connected with the feed inlet of the elevator 14. In this embodiment, the vertical mill feeder 15 is a rotary air lock feeder. The feed opening of the hoister 14 is communicated with the feed opening of the rotary air locking feeder through a chute, and the feed opening of the rotary air locking feeder is communicated with the feed opening of the vertical mill 21 through a chute. By arranging the returning belt conveyor 16, spodumene which is not completely ground in the vertical mill 21 can be re-ground in the vertical mill 21 through the elevator 14 and the vertical mill feeding device 15.
The air outlet of the hot air blowing device 22 is communicated with the air inlet of the vertical mill 21, the hot air blowing device 22 can be a hot air blower, a hot air furnace or other waste heat equipment, the hot air blowing device 22 blows hot air into the vertical mill 21, firstly, the drying of spodumene powder can be realized, and secondly, spodumene powder can be blown up for powder selection.
The discharge port of the vertical mill 21 is communicated with the feed port of the cyclone dust collector 31 through a pipeline, the discharge port of the cyclone dust collector 31 is communicated with the feed port of the bag type dust collector 32 through a pipeline, and the discharge ports of the cyclone dust collector 31 and the bag type dust collector 32 are respectively communicated with the finished product bin 33. The cyclone dust collector 31 is used for collecting spodumene powder finished products, the bag type dust collector 32 is used for dust removal, and the finished product bin 33 is used for storing finished product powder. In order to facilitate the transmission of the final product of the diaspore powder, in this embodiment, the discharge openings of the cyclone dust collector 31 and the bag dust collector 32 are respectively connected with a bin pump 34, and the final product powder in the cyclone dust collector 31 and the bag dust collector 32 is respectively conveyed into the final product bin 33 through the bin pump 34. In this embodiment, the baghouse 32 may be a gas box pulse baghouse.
The whole pulverizing system is in a negative pressure state, so that dust overflow is effectively prevented, and the production environment is greatly improved. The cyclone dust collector 31 and the lower section of the bag dust collector 32 both adopt a bin pump 34 as pneumatic conveying equipment to directly convey the materials into a finished powder bin.
Example 2
Referring to fig. 2, 4 and 5, in embodiment 2, based on embodiment 1, a feeding device 15 of a vertical mill is selected as a screw conveyor, a feeding end of the screw conveyor extends into the vertical mill and is fixed on an inner wall of a vertical mill 21 above a cone bucket 211 or in the cone bucket 211 through a connecting frame 18, the cone bucket 211 is an existing structure in the vertical mill 21 and is used for collecting spodumene particles which are blown up but have unqualified powder particle sizes and drop due to gravity, and the spodumene particles fall onto a grinding disc 212 through a feeding opening at the lower part of the cone bucket 211 to be ground again. The discharge opening of the screw conveyor can be opposite to the center of the millstone 212 of the vertical mill 21, so that the uniformity of the spodumene raw material on the millstone 212 is improved, and the excessive vibration of the vertical mill 21 is avoided. In addition, the problem of plugging the feed chute of the existing vertical mill 21 when spodumene powder is relatively wet is also solved by employing a screw conveyor.
Example 3
Referring to fig. 3, in order to increase the collection speed of spodumene powder products on the basis of example 1, the outlet of the baghouse 32 is connected to the air inlet of the negative pressure fan 35. Thus, the hot air blower 22 blows air into the vertical mill 21, and the negative pressure fan 35 draws air from the vertical mill 21. In order to improve the heat utilization rate of the hot air blowing device 22 and reduce heat loss so as to realize energy saving, the air outlet of the negative pressure fan 35 is communicated with a pipeline between the air outlet of the hot air blowing device 22 and the air inlet of the vertical mill 21 through a return pipeline.
The main working process of the embodiment of the utility model is as follows:
1. the spodumene roasting material is stored in a raw material bin 11, an air cannon 17 is positioned below the raw material bin 11 to perform material blocking treatment, so that the raw material bin 11 can be conveniently and smoothly fed, then the material is conveyed to a long belt 13 by a quantitative belt feeder 12, the long belt 13 conveys the material to a lifting machine 14, and finally the material is fed to a vertical mill 21 by a rotary air locking feeder or a screw conveyor;
2. spodumene falls onto the millstone 212 of the vertical mill 21 through a chute or falls into the center of the millstone 212 of the vertical mill 21 through a cone hopper 211 by a screw conveyor, the millstone rotates under the drive of a motor 213 and a millstone main shaft, and when materials on the millstone 212 pass through a grinding roller way area on the millstone 212 through centrifugal force, the materials are ground and grinded by a grinding roller 214; the hot blast device 22 blows hot air into the inner cavity of the vertical mill 21 through the air ring and blows up the lithium-ion powder at the edge of the millstone 212, the larger granular materials fall onto the millstone 212 again to be continuously crushed, when the materials in the air flow pass through the upper separator 215, under the action of the rotor blade, the coarse particles return to the millstone 212 again through the cone hopper 211 to be ground, and qualified fine powder is discharged out of the mill along with the air flow through the discharge hole 218 of the vertical mill; after being ground by the grinding roller 214 of the vertical mill 21, the blocky spodumene is discharged from the slag discharge port 217, and is transported by the return belt conveyor 16 to enter the elevator 14 again, namely, returned materials and ground again;
3. the spodumene powder finished product is collected by a cyclone dust collector 31, is dedusted by a bag type dust collector 32, and is directly conveyed into a finished product bin 33 by a bin pump as pneumatic conveying equipment.
The above-mentioned quantitative belt feeder 12, long belt feeder 13, lifting machine 14, vertical mill feeder 15, returning belt feeder 16, air cannon 17, vertical mill 21, hot air blowing device 22, cyclone collector 31, bag dust collector 32 and bin pump 34 can select corresponding existing equipment according to the specific spodumene powder preparation scene, and the control process is the prior art, so long as the above-mentioned working process can be realized, and no description is repeated here.
Although embodiments of the present utility model 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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A spodumene powder preparation system which is characterized in that: comprises a conveying system, a grinding system and a collecting system; the conveying system comprises a raw material bin, a quantitative belt feeder, a long belt feeder, a lifting machine, a vertical mill feeding device and a material returning belt feeder; the grinding system comprises a vertical mill and a hot air blowing device; the collecting system comprises a cyclone dust collector, a bag type dust collector and a finished product bin;
the feeding end of the quantitative belt feeder extends to the discharging opening of the raw material bin, the discharging end of the quantitative belt feeder extends to the feeding end of the long belt feeder, the discharging end of the long belt feeder is connected with the feeding opening of the elevator, the feeding opening of the vertical mill feeder is respectively connected with the discharging opening of the elevator and the feeding opening of the vertical mill, the feeding end of the returning belt feeder extends to the slag discharging opening of the vertical mill, and the discharging end of the returning belt feeder is connected with the feeding opening of the elevator;
the air outlet of the hot air blowing device is communicated with the air inlet of the vertical mill;
the discharging port of the vertical mill is communicated with the feeding port of the cyclone dust collector through a pipeline, the discharging port of the cyclone dust collector is communicated with the feeding port of the bag type dust collector through a pipeline, and the discharging ports of the cyclone dust collector and the bag type dust collector are respectively communicated with a finished product bin.
2. The spodumene powder formulation system of claim 1, wherein: the vertical mill feeding device is a rotary air locking feeding machine.
3. The spodumene powder formulation system of claim 1, wherein: the feeding device of the vertical mill is a screw conveyor, and the discharging end of the screw conveyor extends into the vertical mill and is fixed on the inner wall of the vertical mill above the cone hopper or in the cone hopper.
4. The spodumene powder formulation system of claim 1, wherein: an arch breaker is arranged on the outer wall of the blanking opening of the raw material bin, and the arch breaker is an air cannon.
5. The spodumene powder formulation system of claim 1, wherein: and a discharge port of the bag type dust collector is communicated with an air inlet of the negative pressure fan.
6. The spodumene powder formulation system of claim 5, wherein: and an air outlet of the negative pressure fan is communicated with a pipeline between an air outlet of the hot air blowing device and an air inlet of the vertical mill through a return pipeline.
7. The spodumene powder formulation system of claim 1, wherein: and the discharging openings of the cyclone dust collector and the bag type dust collector are respectively connected with a bin pump, and the finished powder in the cyclone dust collector and the bag type dust collector is respectively conveyed into a finished bin through the bin pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321864441.7U CN220610737U (en) | 2023-07-17 | 2023-07-17 | Spodumene powder preparation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321864441.7U CN220610737U (en) | 2023-07-17 | 2023-07-17 | Spodumene powder preparation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220610737U true CN220610737U (en) | 2024-03-19 |
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ID=90218385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321864441.7U Active CN220610737U (en) | 2023-07-17 | 2023-07-17 | Spodumene powder preparation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220610737U (en) |
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2023
- 2023-07-17 CN CN202321864441.7U patent/CN220610737U/en active Active
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