CN112304072A - Drying device - Google Patents
Drying device Download PDFInfo
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- CN112304072A CN112304072A CN202011202782.9A CN202011202782A CN112304072A CN 112304072 A CN112304072 A CN 112304072A CN 202011202782 A CN202011202782 A CN 202011202782A CN 112304072 A CN112304072 A CN 112304072A
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- medium
- drying device
- energy storage
- drying
- energy
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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
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S80/60—Thermal insulation
- F24S80/65—Thermal insulation characterised by the material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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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
-
- 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
-
- 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
- F26B25/06—Chambers, containers, or receptacles
- F26B25/08—Parts thereof
- F26B25/10—Floors, roofs, or bottoms; False bottoms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention belongs to the technical field of energy-saving facilities, and particularly relates to a drying device, wherein the internal space of the drying device is larger, the interior and the exterior of the drying device are connected through a hollow pipeline, an energy receiving plate covers the surface layer of the drying device, a solar water heater is connected onto the energy receiving plate, the solar water heater is connected with an energy storage device positioned at the bottom of the drying device through a medium transmission pipeline, the top layer of the drying device is covered with a layer of energy receiving plate, so that the solar heat can be absorbed to the maximum extent, the moisture of agricultural products to be dried can be dried to the maximum extent, and a chimney effect can be formed by arranging a substance similar to a chimney on the top of the drying device, so that excessive water vapor after the moisture is evaporated is discharged.
Description
Technical Field
The invention belongs to the technical field of energy-saving facilities, and particularly relates to a drying device.
Background
According to understanding, in cities of many remote areas of China, the problem of low vegetation coverage rate can be caused, so that sunlight irradiation is too sufficient, phenomena such as serious dehydration and sun drying of crops and grains occur, greenhouse planting and greenhouse cultivation are adopted in many places, water evaporation caused by sunlight irradiation is relieved to a certain extent, but in the process, the situations of environmental pollution and resource waste caused by poor dehydration effect or large dehydration energy consumption can occur.
Therefore, aiming at the problems in the prior art, the designer of the scheme actively researches and explores by analyzing and combining design experience, and then the invention provides the drying device.
Disclosure of Invention
In order to solve the above problems, the present invention provides a drying apparatus.
In order to overcome the defects of the prior art, the invention provides the drying device which has high drying efficiency, low cost, small pollution and diversified use.
In order to solve the technical problems, the invention adopts the technical scheme that: the energy storage device is hollow and is divided into a first part and a second part, the heat conductivity coefficients of the first part and the second part are different, the first part is provided with a circulating medium inlet, the second part is provided with a circulating medium outlet, and the circulating medium inlet and the circulating medium outlet can be communicated with the hollow part in the energy storage device and the outside;
the energy storage device is internally provided with an energy storage medium, a medium convection conveying pipe is suspended in the energy storage medium, and two ends of the medium convection conveying pipe are opened and are respectively positioned in areas corresponding to two parts with different heat conductivity coefficients.
Preferably, the difference of the thermal conductivity of the first part and the second part is realized by two materials with different thermal conductivity.
Preferably, the first part and the second part are different in heat conductivity coefficient, the first part is provided with a heat preservation outer layer, and the second part is provided with a radiating fin.
Preferably, a heat preservation outer layer is arranged outside a first part of the two parts with different heat conductivity coefficients, and a cooling fin is arranged on a second part of the two parts with different heat conductivity coefficients.
Preferably, the shape of the radiating fin is a regular pattern.
Preferably, the medium circulation input port and the medium circulation output port are arranged on the same side of the energy storage device, the medium circulation input port is arranged below, and the medium circulation output port is arranged above.
Preferably, the energy storage device supports a drying device.
Preferably, the top of the drying device is triangular, and the drying device comprises a solar water heater covered on the top of the drying device and a hollow pipeline communicated with the inside and the outside of the drying device.
Preferably: the top of the drying device is covered with energy receiving plates which are arranged around the solar water heater at intervals and are made of light-transmitting materials.
Preferably: the drying device comprises a conveyor belt and a medium transmission conduit inside, the energy storage device is communicated with the medium transmission conduit through a transmission pipeline, crops to be dried are arranged on the conveyor belt, and the medium transmission pipeline is arranged below the conveyor belt.
By adopting the technical scheme, the invention has the beneficial technical effects that:
1. in the technical scheme of the invention, the energy storage device is hollow and is divided into a first part and a second part, the first part and the second part have different heat conduction coefficients, so that temperature difference can be well generated to form negative pressure and accelerate heat conduction, meanwhile, the first part is provided with a circulating medium input port, the second part is provided with a circulating medium output port, the circulating medium input port and the circulating medium output port (5) can be communicated with the hollow part in the energy storage device and the outside to accelerate circulation and create a better circulation environment, a medium convection conveying pipe is suspended in the energy storage medium, two ends of the medium convection conveying pipe are positioned in areas corresponding to the two parts with different heat conduction coefficients, and the medium convection conveying pipe can well utilize the temperature difference and the negative pressure to carry out medium convection conveying, so that the circulation efficiency is greatly improved.
2. According to the technical scheme, the drying device can form up-and-down drying hot air convection, so that the moisture of agricultural products to be dried can be dried to the maximum degree, and the top of the drying device is provided with a chimney similar to a chimney, so that a chimney effect can be formed, and redundant water vapor after moisture evaporation is discharged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of an energy storage device included in the present invention;
FIG. 3 is a schematic view of another configuration of an energy storage device included in the present invention;
1-circulating medium input port, 2-medium transmission pipeline, 3-conveyor belt, 4-crops, 5-solar water heater, 6-energy receiving plate, 7-hollow pipeline, 8-internal circulating hot gas, 9-energy storage device, 10-energy storage medium, 11-medium convection conveying pipe, 12-radiating fin, 13-heat preservation outer layer, 14-circulating medium output port, 15-concrete heat preservation area, 16-metal heat dissipation area, and 17-outside fresh air.
Detailed Description
The invention relates to the technical field of energy-saving facilities, in particular to a drying device.
Referring to fig. 1-2, the energy storage device 9 is hollow and divided into a first portion and a second portion, and the first portion and the second portion have different thermal conductivities, which may be different materials, for example: copper and non-metals, and also the types of materials used, such as: copper and iron. The first part is provided with a circulating medium input port 1, the second part is provided with a circulating medium output port 14, the circulating medium input port 1 and the circulating medium output port 14 can be communicated with the hollow part in the energy storage device 9 and the outside, the communication mode is not limited to the communication of a common pipeline, only a closed container is required to be communicated, the energy storage device 9 is internally provided with an energy storage medium 10, the energy storage medium can be water but not limited to water, a medium convection conveying pipe 11 is suspended in the energy storage medium 10, two ends of the medium convection conveying pipe 11 are opened and are respectively positioned in the areas corresponding to the two parts with different heat conduction coefficients, the temperature difference can be effectively ensured by the arrangement, the difference of the heat conduction coefficients of the first part and the second part is realized by two materials with different heat conduction coefficients, the first material is concrete, the second is metal, which has a thermal conductivity greater than that of concrete, and can be implemented by the same type of material but with a different thermal conductivity, such as iron and aluminum, as shown in the description of fig. 3. The heat-insulating energy storage device comprises a first part and a second part which are different in heat conductivity coefficient, wherein the first part is provided with a heat-insulating outer layer 13, the second part is provided with a radiating fin 12, the radiating fin 12 is in a regular pattern shape, a medium circulation input port 1 and a medium circulation output port 14 are arranged on the same side of the energy storage device, the medium circulation input port is arranged below, the medium circulation output port is arranged above, and the heat-insulating energy storage device is not limited to the arrangement mode of course as long as the pressure difference can be generated.
The working principle of the invention is as follows: the energy storage device 9 is hollow, the hollow part of the energy storage device 9 is used for storing the energy storage medium 10, as can be seen from the description of the structure shown in fig. 2, the energy storage medium 10 is continuously an internal input medium, which is fed through the circulating medium inlet 1, because the fed medium has a certain temperature, therefore, the end of the energy storage medium 10 just input is provided with the heat preservation outer layer 13, the heat preservation outer layer 13 performs the heat preservation function, the material chosen has a low thermal conductivity and, after the circulating medium 10 has entered the interior of the energy storage means 7 from the input, will continue to rise, and when the area where the heat sink 12 is located is reached, the temperature will decrease, because the heat dissipation plate is made of metal, the heat conductivity of the metal is high, and the heat dissipation performance is good, so that the temperature of the part of the heat dissipation plate 12 is lower than that of the area where the lower end heat preservation outer layer is located, and a temperature difference is generated. Then the temperature difference will bring the inside of energy storage device 9 to generate a certain pressure difference, forming a negative pressure environment, at this time, because convection medium conveying pipe 11 is suspended inside energy storage device 9, energy storage medium 10 will be under the effect of negative pressure, so that the water inside energy storage device 9 flows in two directions, the water inside convection medium conveying pipe 11 flows upwards, the outside water flow direction is downward, forming a state of circular flow, at the same time, the material such as heat preservation outer layer 13 and cooling fin 12 or other heat conduction coefficients are different, so that the medium flows inside energy storage device 9 due to the temperature difference, forming the internal and external circulation of the medium, that is, as long as the heat preservation outer layer 13 and cooling fin 12 are arranged to allow the inside of energy storage device 9 to form internal. Energy memory 9 can form the circulation that inside and outside combined together daytime according to the difference in temperature and negative pressure environment, and night is because outside temperature reduces and illumination intensity descends, and 9 extrinsic cycles of energy memory stop, can not absorb and use ambient temperature and natural wind, only carry out the internal circulation and carry out the energy circulation and carry, realize certain energy storage heat preservation effect.
More preferred is: referring to the accompanying drawings 1-2, the energy storage device 9 supports the drying device, the top of the drying device is triangular and comprises a solar water heater 5 covered on the top of the drying device and a hollow pipeline 7 communicated with the inside of the drying device and the outside, the top of the drying device is covered with an energy receiving plate 6, the energy receiving plate 6 is arranged around the solar water heater 5 at intervals, the energy receiving plate 6 is made of a light-transmitting material, the inside of the drying device comprises a conveyor belt 3 and a medium transmission conduit 2, the energy storage device 9 is communicated with the medium transmission conduit 2 through a transmission pipeline, crops 4 to be dried are arranged on the conveyor belt 3, and the medium transmission conduit 2 is arranged below the conveyor belt 3.
The working principle of the invention is that the top of the drying device is covered with the energy receiving plates 6, and the energy receiving plates 6 are uniformly covered on the top in a covering mode, including but not limited to the covering, for example, the covering can also be interval covering, as long as the functions of light transmission and heat absorption are achieved. The solar water heater 5 is arranged around the energy receiving plate 6 for heat absorption and heating, and the energy receiving plate 6 can assist in heating the solar water heater 5.
The top of the drying device is triangular, so that evaporated hot air can float upwards to play a role of collecting hot air, a heat island effect is formed, the hollow pipeline arranged at the top can discharge the floating hot air, the effective discharge of the hot air and moisture is realized, and a chimney effect is formed at the same time, so that the flowing and drying speed of energy is accelerated. Inside can carry out the heat energy circulation in energy memory 9, pour into the medium that obtains from the heating of solar water heater 5 into in energy memory 9, circulate through the heat pipe effect in energy memory 9 is inside, some circulating medium can be discharged through the circulating medium delivery outlet 14 that links to each other with medium transmission pipeline 2, transport 3 below of conveyer belt, carry out waste heat heating once more, the below of forming dry agricultural product 4 this moment heats and dries, simultaneously combine the top sunlight to come to heat the stoving together from top to bottom agricultural product 4 through energy receiving plate 6, improve drying efficiency and thermal utilization.
A space is formed between the medium transmission pipeline 2 and the energy storage device 9 in the drying device, livestock breeding can be carried out, or crops or green plant fields under a greenhouse environment are cultivated and planted, and the space utilization rate is maximized.
More preferred is: referring to fig. 3, after the medium 10 flows into the circulating medium input port 1, a small loss of temperature and energy is maintained under the action of the concrete heat preservation area 15, at this time, the selected material is not necessarily concrete, and may also be other materials with similar components and types, the medium 10 circulates in the energy storage device 9 by using negative pressure, the heat conduction capability of the metal heat dissipation area 16 is higher than that of the concrete heat preservation area 15, and at this time, the medium 10 may be output and utilized through the circulating medium output port 14.
The working principle of the invention is as follows: the medium 10 flows into the energy storage device 9 to form circulation, and circulation flow is formed under the action of areas with different heat conductivity coefficients, so that energy can be secondarily utilized, and the energy can be more fully utilized.
The present embodiment does not limit the shape, material, structure, etc. of the present invention in any way, and all the simple modifications, equivalent changes and modifications substantially made to the above embodiments according to the technology of the present invention belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. A drying apparatus, characterized in that: the energy storage device (9) is hollow and is divided into a first part and a second part, the first part and the second part have different heat conductivity coefficients, the first part is provided with a circulating medium inlet (1), the second part is provided with a circulating medium outlet (14), and the circulating medium inlet (1) and the circulating medium outlet (14) can be communicated with the hollow part in the energy storage device (9) and the outside;
energy storage medium (10) are installed inside energy memory (9), the inside suspension of energy storage medium (10) has medium convection conveyer pipe (11), medium convection conveyer pipe (11) both ends opening is in the region that two parts that the coefficient of heat conductivity is different correspond respectively.
2. A drying apparatus according to claim 1, wherein: the difference of the heat conductivity coefficients of the first part and the second part is realized by two materials with different heat conductivity coefficients.
3. A drying apparatus according to claim 2, wherein: the first material is concrete, the second material is metal, and the thermal conductivity of the metal is greater than that of the concrete.
4. A drying apparatus according to claim 1, wherein: the first part and the second part with different heat conduction coefficients, the first part is provided with a heat preservation outer layer (13), and the second part is provided with a radiating fin (12).
5. A drying apparatus according to claim 4, wherein: the radiating fins (12) are in a regular pattern.
6. A drying apparatus according to claim 1, wherein: the medium circulation input port (1) and the medium circulation output port (14) are arranged on the same side of the energy storage device, the medium circulation input port (1) is arranged at the lower part, and the medium circulation output port (14) is arranged at the upper part.
7. A drying apparatus according to claim 1, wherein: the energy storage device (9) supports the drying device.
8. A drying apparatus according to claim 7, wherein: the top of the drying device is triangular, and the drying device comprises a solar water heater (5) covered on the top of the drying device and a hollow pipeline (7) communicated with the inside and the outside of the drying device.
9. A drying apparatus according to claim 8, wherein: the drying device is characterized in that the top of the drying device is covered with an energy receiving plate (6), the energy receiving plate (6) is arranged around the solar water heater (5) at intervals, and the energy receiving plate (6) is made of a light-transmitting material.
10. A drying apparatus according to claim 8, wherein: the drying device comprises a conveyor belt (3) and a medium transmission conduit (2) inside, the energy storage device (9) is communicated with the medium transmission conduit (2) through a transmission pipeline, crops (4) to be dried are arranged on the conveyor belt (3), and the medium transmission pipeline (2) is arranged below the conveyor belt (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011202782.9A CN112304072A (en) | 2020-11-02 | 2020-11-02 | Drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011202782.9A CN112304072A (en) | 2020-11-02 | 2020-11-02 | Drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112304072A true CN112304072A (en) | 2021-02-02 |
Family
ID=74333506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011202782.9A Pending CN112304072A (en) | 2020-11-02 | 2020-11-02 | Drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112304072A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2010224353A1 (en) * | 2009-09-25 | 2011-04-14 | Agroteknik Pty Ltd | Concentrated solar energy thermal processing systems |
| CN108195151A (en) * | 2018-01-09 | 2018-06-22 | 深圳职业技术学院 | Heat accumulating type solar energy dryer |
| CN207622479U (en) * | 2017-12-14 | 2018-07-17 | 无锡市尚德干燥设备有限公司 | The cycle heat exchange drying machine of external solar energy stove |
| KR20190000547A (en) * | 2017-06-23 | 2019-01-03 | 토방이앤이 주식회사 | Apparatus for drying sewage sludge pellet |
| CN211823515U (en) * | 2020-03-27 | 2020-10-30 | 江西东方名竹竹业有限公司 | Automatic constant-temperature circulating drying room for drying bamboo wood |
-
2020
- 2020-11-02 CN CN202011202782.9A patent/CN112304072A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2010224353A1 (en) * | 2009-09-25 | 2011-04-14 | Agroteknik Pty Ltd | Concentrated solar energy thermal processing systems |
| KR20190000547A (en) * | 2017-06-23 | 2019-01-03 | 토방이앤이 주식회사 | Apparatus for drying sewage sludge pellet |
| CN207622479U (en) * | 2017-12-14 | 2018-07-17 | 无锡市尚德干燥设备有限公司 | The cycle heat exchange drying machine of external solar energy stove |
| CN108195151A (en) * | 2018-01-09 | 2018-06-22 | 深圳职业技术学院 | Heat accumulating type solar energy dryer |
| CN211823515U (en) * | 2020-03-27 | 2020-10-30 | 江西东方名竹竹业有限公司 | Automatic constant-temperature circulating drying room for drying bamboo wood |
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Application publication date: 20210202 |
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| RJ01 | Rejection of invention patent application after publication |