CN113720137A - High-efficient drying device - Google Patents
High-efficient drying device Download PDFInfo
- Publication number
- CN113720137A CN113720137A CN202111141075.8A CN202111141075A CN113720137A CN 113720137 A CN113720137 A CN 113720137A CN 202111141075 A CN202111141075 A CN 202111141075A CN 113720137 A CN113720137 A CN 113720137A
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- China
- Prior art keywords
- fixedly connected
- box body
- drying device
- driving
- material turning
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
- F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention is suitable for the technical field of drying equipment, and provides a high-efficiency drying device which comprises a box body, wherein a plurality of layers of conveying mechanisms are arranged in the box body, each layer of conveying mechanism is provided with a material turning mechanism, and the four peripheral walls of the box body are provided with heat supply mechanisms; the stirring mechanism comprises a supporting beam, a top surface fixedly connected guard plate of the supporting beam, mounting shafts fixedly connected with two ends of the supporting beam, a mounting seat fixedly connected with the outer side of each mounting shaft, a connecting support rod rotatably connected with each mounting shaft, a stirring roller fixedly connected between the two support rods, a plurality of stirring teeth fixedly connected with the stirring roller, one end of the stirring roller rotatably connected with one support rod, the other end of the stirring roller connected with a driving box, and the driving box fixedly connected with the other support rod. Therefore, the turnover device is simple in structure and reliable in design, and can be used for turning over materials at different depths, so that the turning effect is improved, and the drying efficiency is improved.
Description
Technical Field
The invention relates to the technical field of drying equipment, in particular to a high-efficiency drying device.
Background
The drying efficiency of stirring in order to improve the material need be carried out to the material when the material is dried, but current stirring device can only carry out the stirring to the same degree of depth of material, and when the material was thick, the stirring device that is located the top layer can't stir the material of bottom, and the stirring device that is located the bottom can't turn over the material of top layer, leads to the stirring effect poor, and drying efficiency is low.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the efficient drying device which is simple in structure and reliable in design, and can be used for turning materials at different depths, so that the turning effect is improved, and the drying efficiency is improved.
In order to achieve the purpose, the invention provides a high-efficiency drying device which comprises a box body, wherein a plurality of layers of conveying mechanisms are arranged in the box body, each layer of conveying mechanism is provided with a material turning mechanism, and the peripheral wall of the box body is provided with a heat supply mechanism; the material turning mechanism comprises a supporting cross beam, a guard plate is fixedly connected to the top surface of the supporting cross beam, mounting shafts are fixedly connected to two ends of the supporting cross beam, a mounting seat is fixedly connected to the outer side of each mounting shaft, a supporting rod is rotatably connected to each mounting shaft, a material turning roller is arranged between the two supporting rods, a plurality of material turning teeth are fixedly connected to the material turning roller, one end of the material turning roller is rotatably connected to one of the supporting rods, the other end of the material turning roller is connected with a driving box, and the driving box is fixedly connected to the other supporting rod; the support rod is provided with a mounting groove, an adjusting assembly is arranged in the mounting groove, the top of the adjusting assembly is rotatably connected with one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the guard plate; the adjusting part is including being located the outside connecting block of mounting groove, the connecting block with connecting rod swing joint, the inside first driving piece that is equipped with of connecting block, the output shaft of first driving piece stretches out behind the connecting block, stretch into the first bevel gear of rigid coupling in the mounting groove, first bevel gear's both sides be equipped with respectively two with the second bevel gear of first bevel gear meshing, two drive gear is connected through two pivots respectively to the second bevel gear, the upper and lower both sides of mounting groove be equipped with respectively with two drive gear meshed's straight-tooth.
According to the efficient drying device, the second driving piece is fixedly connected in the driving box, the output shaft of the second driving piece is fixedly connected with the driving gear, the stirring roller extends into the driving box and is fixedly connected with the driven gear, and the driving gear and the driven gear are connected and driven through the chain.
According to the efficient drying device, the mounting seat is fixedly connected to the chain of the chain conveying mechanism, and the chain conveying mechanism is fixedly connected to the box body.
According to the efficient drying device, the top of the box body is provided with the feeding hole, and the bottom of the box body is provided with the discharging hole.
According to the efficient drying device, the input end of each layer of conveying mechanism is provided with the receiving hopper.
According to the efficient drying device, the connecting block is provided with the roller, and the roller is located between the connecting block and the supporting rod.
According to the efficient drying device, the heat supply mechanism comprises the hot water pipe which is spirally arranged in an S shape.
According to the efficient drying device, the top of the box body is provided with the heat exchange port.
The invention aims to provide an efficient drying device, which can turn over materials by arranging a turning mechanism, improve the drying effect of the materials, and turn over the materials at different depths by arranging an adjusting assembly, so that the turning effect is improved, and the drying efficiency is improved. In conclusion, the beneficial effects of the invention are as follows: simple structure, the design is reliable, can carry out the stirring to the material of the different degree of depth, increases stirring effect, improves drying efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a material turning mechanism;
FIG. 3 is a schematic view of the structure of FIG. 2 in the direction A-A;
FIG. 4 is a schematic view of an operating state of the material turning mechanism;
FIG. 5 is a schematic view of another working state structure of the material turning mechanism;
FIG. 6 is a schematic view of the mounting structure of the material turning mechanism and the chain conveying mechanism;
FIG. 7 is a schematic left side view of the structure of FIG. 1;
FIG. 8 is a schematic view of a hot water pipe configuration;
in the figure: 1-box body, 11-material inlet, 12-material outlet, 2-conveying mechanism, 3-material turning mechanism, 31-supporting beam, 32-protective plate, 33-mounting seat, 34-supporting rod, 35-driving box, 351-second driving member, 352-driving gear, 353-driven gear, 354-chain, 36-material turning roller, 361-material turning tooth, 37-connecting rod, 38-adjusting component, 381-connecting block, 382-roller, 383-protecting shell, 384-first driving member, 385-first bevel gear, 386-second bevel gear, 387-rotating shaft, 388-driving gear, 4-material receiving hopper, 5-material, 6-heat exchange port, 7-heat supply mechanism and 71-hot water pipe, 81-straight teeth, 82-installation grooves and 9-chain conveying mechanisms.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the invention provides a high-efficiency drying device, which comprises a box body 1, wherein a plurality of layers of conveying mechanisms 2 are arranged in the box body 1, the plurality of layers of conveying mechanisms 2 can increase the amount of materials 5 contained in the box body 1, each layer of conveying mechanism 2 is provided with a material turning mechanism 3, each material turning mechanism 3 is used for turning the materials 5, and the peripheral walls of the box body 1 are provided with heat supply mechanisms 7.
The top of box 1 is equipped with feed inlet 11, the bottom of box 1 is equipped with discharge gate 12, material 5 enters into from feed inlet 11 and connects in the hopper 4, and spill on conveying mechanism 2 through connecing hopper 4, every layer of conveying mechanism 2's input all is equipped with connects hopper 4, adjacent two-layer conveying mechanism 2, the material of conveying mechanism 2 above being located can fall in the hopper 4 that connects of conveying mechanism 2 below and spill on conveying mechanism 2 through connecing hopper 4, make the material carry in multilayer conveying mechanism 2 can not take place to spill, the output of last layer conveying mechanism 2 is with material 5 from discharge gate 2 output box 1.
Referring to fig. 2, the material turning mechanism 3 includes a supporting beam 31, a guard plate 32 is fixedly connected to the top surface of the supporting beam 31, mounting shafts are fixedly connected to both ends of the supporting beam 31, a mounting seat 33 is fixedly connected to the outer side of each mounting shaft, the mounting seat 33 is fixedly connected to a chain of the chain conveying mechanism 9, the chain conveying mechanism 9 is fixedly connected to the box 1, the chain conveying mechanism 9 can drive the material turning mechanism 3 to move when operating, a support rod 34 is rotatably connected to each mounting shaft, a material turning roller 36 is disposed between the two support rods 34, a plurality of material turning teeth 361 are fixedly connected to the material turning roller 36, one end of the material turning roller 36 is rotatably connected to one of the support rods 34, the other end of the material turning roller 36 is connected to a driving box 35, the driving box 35 is fixedly connected to the other support rod 34, a second driving member 351 is fixedly connected to the driving box 35, a driving gear 352 is fixedly connected to the output shaft of the second driving member 351, the material turning roller 36 extends into the driving box 35 and is fixedly connected to a driven gear 353, the driving gear 352 and the driven gear 353 are connected and driven through the chain 354, so that the second driving piece 351 can drive the driving gear 352 to rotate so as to drive the driven gear 353 to rotate, the material turning roller 36 rotates, the material 5 can be turned through the rotation of the material turning roller 36, and the drying speed of the material is improved.
The guard plate 32 can prevent the material from splashing when the material turning roller 36 turns the material, and provides support for the connecting rod 37.
The supporting rod 34 is provided with a mounting groove 82, an adjusting component 38 is arranged in the mounting groove 82, the top of the adjusting component 38 is rotatably connected with one end of the connecting rod 37, and the other end of the connecting rod 37 is rotatably connected on the guard plate 32.
With reference to fig. 3 to 6, the adjusting assembly 38 includes a connecting block 381 located outside the mounting groove 82, the connecting block 381 is movably connected to the connecting rod 37, a first driving member 384 is disposed inside the connecting block 381, an output shaft of the first driving member 384 extends out of the connecting block 381 and then extends into the mounting groove 82 to be fixedly connected to a first bevel gear 385, two second bevel gears 386 engaged with the first bevel gear 385 are disposed on two sides of the first bevel gear 385 respectively, the two second bevel gears 386 are connected to two driving gears 388 through two rotating shafts 387 respectively, straight teeth 81 engaged with the two driving gears 388 are disposed on upper and lower sides of the mounting groove 82 respectively, and the straight teeth 81 are engaged with the driving gears 388 to prevent the adjusting mechanism from sliding in the mounting groove 82; the first bevel gear 385, the two second bevel gears 386, and the two rotating shafts 387 are all located within a protective shell 383. During operation, the first driving part 384 rotates to drive the first bevel gear 385 to rotate, the first bevel gear 385 rotates to drive the two second bevel gears 386 to rotate, the two second bevel gears 386 rotate to drive the two driving gears 388 to rotate, the two driving gears 388 are meshed with the straight teeth 81, so that the connecting block 381 moves on the supporting rod 34, because the connecting block 381 is connected with the connecting rod 37, when the connecting block 381 moves in a direction far away from the connecting rod 37, because the length of the connecting rod 37 cannot be changed, the connecting rod 37 can pull one end, provided with the material overturning roller 36, of the supporting rod 34 to move upwards, and the material overturning roller 36 can move in a direction far away from the conveying mechanism 2 due to the upward movement of the connecting rod 381, so that the depth of the material overturning teeth 361 on the material overturning roller 36 extending into the material on the conveying mechanism 2 is reduced; when connecting block 381 is to the direction motion that is close to connecting rod 37, the one end that bracing piece 34 was equipped with stirring cylinder 36 can be at the downstream under connecting rod 37's thrust effect, stirring cylinder 36 downstream can make stirring cylinder 36 be close to conveying mechanism 2 to make the stirring tooth 361 on stirring cylinder 36 stretch into the degree of depth deepening that is located the material on conveying mechanism 2, can make stirring cylinder 36 carry out the stirring to the material of the different degree of depth through adjusting part 38, increase the stirring effect, improve drying efficiency.
Preferably, the connecting block 381 is provided with a roller 382, the roller 382 is located between the connecting block 381 and the supporting rod 34, and the roller 382 can facilitate the movement of the connecting block 381, so as to prevent the connecting block 381 and the supporting rod 34 from rubbing.
Preferably, the first driving member 384 is a motor capable of rotating in forward and reverse directions.
Combine fig. 7 and 8, heat supply mechanism 7 lets in hot water including being the hot-water line 71 that S type dish revolves the setting in the hot-water line 71, can heat up the temperature in the box 1, dries material 5, and the top of box 1 is equipped with heat transfer mouth 6, and heat transfer mouth 6 can promote the circulation of heat in the box 1.
The working principle of the invention is as follows:
the material 5 enters the receiving hopper 4 from the feeding hole 11 and is scattered on the conveying mechanisms 2 through the receiving hopper 4, the receiving hopper 4 is arranged at the input end of each layer of conveying mechanism 2, in the adjacent two layers of conveying mechanisms 2, the material of the conveying mechanism 2 positioned above can fall in the receiving hopper 4 of the conveying mechanism 2 below and be scattered on the conveying mechanism 2 through the receiving hopper 4, so that the material can not be scattered in the conveying mechanism 2, when the conveying mechanism 2 in the box body 1 is full of the material 5, all the conveying mechanisms 2 stop moving, the box body 1 is sealed, the heat supply mechanism 7 supplies hot water to raise the temperature in the box body 1, at the moment, the chain conveying mechanism 9 on each layer of conveying mechanism 2 operates to drive the material turning mechanism 3 to move back and forth above the conveying mechanism 2 to turn the material 5, and when the material turning mechanism 3 moves back and forth above the conveying mechanism 2, the first bevel gear 385 can be driven to rotate by the rotation of the first driving piece 384, the first bevel gear 385 drives the two second bevel gears 386 to rotate, the two second bevel gears 386 drive the two driving gears 388 to rotate, the two driving gears 388 are meshed with the straight teeth 81, so that the connecting block 381 can move on the supporting rod 34, and as the connecting block 381 is connected with the connecting rod 37, when the connecting block 381 moves in the direction far away from the connecting rod 37, because the length of the connecting rod 37 cannot be changed, the connecting rod 37 can pull the end, provided with the material overturning roller 36, of the supporting rod 34 to move upwards, and the material overturning roller 36 can move in the direction far away from the conveying mechanism 2 by the upward movement of the material overturning roller 36, so that the depth of the material overturning teeth 361 on the material overturning roller 36 extending into the material on the conveying mechanism 2 becomes shallow; when connecting block 381 is to the direction motion that is close to connecting rod 37, the one end that bracing piece 34 was equipped with stirring cylinder 36 can be at the downstream under connecting rod 37's thrust effect, stirring cylinder 36 downstream can make stirring cylinder 36 be close to conveying mechanism 2 to make the stirring tooth 361 on stirring cylinder 36 stretch into the degree of depth deepening that is located the material on conveying mechanism 2, can make stirring cylinder 36 carry out the stirring to the material of the different degree of depth through adjusting part 38, increase the stirring effect, improve drying efficiency. After the material 5 is dried, the discharge port 12 is opened, and the conveying mechanism 2 is started to discharge the dried material out of the box body 1 through the discharge port.
In conclusion, the material turning mechanism can turn materials and improve the drying effect of the materials, and the adjusting assembly is arranged, so that the material turning roller of the material turning mechanism can turn materials at different depths, the material turning effect is improved, and the drying efficiency is improved. The invention has the beneficial effects that: simple structure, the design is reliable, can carry out the stirring to the material of the different degree of depth, increases stirring effect, improves drying efficiency.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The efficient drying device is characterized by comprising a box body, wherein a plurality of layers of conveying mechanisms are arranged in the box body, each layer of conveying mechanism is provided with a material turning mechanism, and the peripheral wall of the box body is provided with a heat supply mechanism;
the material turning mechanism comprises a supporting cross beam, a guard plate is fixedly connected to the top surface of the supporting cross beam, mounting shafts are fixedly connected to two ends of the supporting cross beam, a mounting seat is fixedly connected to the outer side of each mounting shaft, a supporting rod is rotatably connected to each mounting shaft, a material turning roller is arranged between the two supporting rods, a plurality of material turning teeth are fixedly connected to the material turning roller, one end of the material turning roller is rotatably connected to one of the supporting rods, the other end of the material turning roller is connected with a driving box, and the driving box is fixedly connected to the other supporting rod;
the support rod is provided with a mounting groove, an adjusting assembly is arranged in the mounting groove, the top of the adjusting assembly is rotatably connected with one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the guard plate;
the adjusting part is including being located the outside connecting block of mounting groove, the connecting block with connecting rod swing joint, the inside first driving piece that is equipped with of connecting block, the output shaft of first driving piece stretches out behind the connecting block, stretch into the first bevel gear of rigid coupling in the mounting groove, first bevel gear's both sides be equipped with respectively two with the second bevel gear of first bevel gear meshing, two drive gear is connected through two pivots respectively to the second bevel gear, the upper and lower both sides of mounting groove be equipped with respectively with two drive gear meshed's straight-tooth.
2. The efficient drying device as claimed in claim 1, wherein a second driving member is fixedly connected to the driving box, an output shaft of the second driving member is fixedly connected to a driving gear, the stirring roller extends into the driving box and is fixedly connected to a driven gear, and the driving gear and the driven gear are connected and driven by a chain.
3. The efficient drying device as claimed in claim 1, wherein the mounting seat is fixedly connected to a chain of a chain conveying mechanism, and the chain conveying mechanism is fixedly connected to the box body.
4. The efficient drying device as claimed in claim 1, wherein a feed inlet is provided at the top of the box body, and a discharge outlet is provided at the bottom of the box body.
5. The efficient drying device as claimed in claim 1, wherein the input end of each layer of the conveying mechanism is provided with a receiving hopper.
6. The efficient drying device as claimed in claim 1, wherein the connecting block is provided with a roller, and the roller is located between the connecting block and the supporting rod.
7. The efficient drying device as claimed in claim 1, wherein the heat supply mechanism comprises a hot water pipe spirally arranged in an S shape.
8. The efficient drying device as claimed in claim 1, wherein the top of the box body is provided with a heat exchange port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111141075.8A CN113720137A (en) | 2021-09-28 | 2021-09-28 | High-efficient drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111141075.8A CN113720137A (en) | 2021-09-28 | 2021-09-28 | High-efficient drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113720137A true CN113720137A (en) | 2021-11-30 |
Family
ID=78685263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111141075.8A Pending CN113720137A (en) | 2021-09-28 | 2021-09-28 | High-efficient drying device |
Country Status (1)
| Country | Link |
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| CN (1) | CN113720137A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702502A (en) * | 2017-10-17 | 2018-02-16 | 佛山市金凯地过滤设备有限公司 | A kind of belt drying device with humidity discharging function |
| CN208901822U (en) * | 2018-09-21 | 2019-05-24 | 旺苍县康骨堂颈腰椎病研究所 | Traditional Chinese medicinal material drying device |
| CN209512458U (en) * | 2018-11-08 | 2019-10-18 | 成都云材智慧数据科技有限公司 | A kind of positive electrode microwave smart drying unit |
| CN110345741A (en) * | 2018-04-08 | 2019-10-18 | 湖北乾奥建设工程有限公司 | A kind of hituminous sandstone aggregate drying unit |
| CN212538682U (en) * | 2020-05-19 | 2021-02-12 | 成都吉安康药业有限公司 | Drying device for raw materials of traditional Chinese medicine |
-
2021
- 2021-09-28 CN CN202111141075.8A patent/CN113720137A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702502A (en) * | 2017-10-17 | 2018-02-16 | 佛山市金凯地过滤设备有限公司 | A kind of belt drying device with humidity discharging function |
| CN110345741A (en) * | 2018-04-08 | 2019-10-18 | 湖北乾奥建设工程有限公司 | A kind of hituminous sandstone aggregate drying unit |
| CN208901822U (en) * | 2018-09-21 | 2019-05-24 | 旺苍县康骨堂颈腰椎病研究所 | Traditional Chinese medicinal material drying device |
| CN209512458U (en) * | 2018-11-08 | 2019-10-18 | 成都云材智慧数据科技有限公司 | A kind of positive electrode microwave smart drying unit |
| CN212538682U (en) * | 2020-05-19 | 2021-02-12 | 成都吉安康药业有限公司 | Drying device for raw materials of traditional Chinese medicine |
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Application publication date: 20211130 |