CN107869898A - A kind of segmented microwave drying material system - Google Patents
A kind of segmented microwave drying material system Download PDFInfo
- Publication number
- CN107869898A CN107869898A CN201711269237.XA CN201711269237A CN107869898A CN 107869898 A CN107869898 A CN 107869898A CN 201711269237 A CN201711269237 A CN 201711269237A CN 107869898 A CN107869898 A CN 107869898A
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- outer cover
- accepting
- microwave
- microwave drying
- segmented
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- 239000000463 material Substances 0.000 title claims abstract description 87
- 238000001035 drying Methods 0.000 title claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 230000006698 induction Effects 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 239000012780 transparent material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000013021 overheating Methods 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 210000003739 neck Anatomy 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a kind of segmented microwave drying material system, including the material preheating induction system being sequentially connected and dry materials induction system, the dry materials induction system includes accepting feeding device and the microwave heating equipment for carrying out the material accepted in feeding device microwave heating, the feeding device includes accepting outer cover and located at the screw conveying structure for accepting conveying material in outer cover, and the charging aperture for accepting outer cover is connected with preheating the discharging opening of induction system.The present invention is dried using segmented, by dry materials to a certain extent in advance, material will not be made the decline for overheating and causing quality occur, then is dried with smaller power, and whole flow process makes material, and progressively uniformly efficient realize of heating dries target.
Description
Technical field
The invention belongs to technical field of microwave drying, and in particular to a kind of segmented microwave drying material system.
Background technology
Commonly using drying device is arrived in industrial production, traditionally, heating is realized for example, by electricity, fuel, is led to
Heat transfer is crossed to heat container, and then dry for the content in container.This traditional approach first must heat container, in addition
The heat radiation of container, thermal diffusion of heat container outer wall etc. after also heating, therefore cause substantial amounts of thermal loss.Microwave can be worn
Cross the insulating materials such as glass, ceramics, plastics, and will not consumed energy, but microwave can not pass through metal, and it runs into metal just
Reflect.Microwave is instantaneous heat temperature raising to dielectric material, and only material absorbs microwave by energy conversion in container,
Therefore there is no thermal loss.
But most microwave drying system is all that material is placed in single microwave heating chamber, drying efficiency at present
It is not high.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention provides a kind of point
Segmentation microwave drying material system, it is therefore an objective to buffer material conveying, fully carry out micro-wave drying.
To achieve these goals, the technical scheme taken of the present invention is：
A kind of segmented microwave drying material system, including the material preheating induction system and dry materials being sequentially connected
Induction system, the dry materials induction system include accepting feeding device and for carrying out the material accepted in feeding device
The microwave heating equipment of microwave heating, the feeding device include accepting outer cover and located at the spiral for accepting conveying material in outer cover
Structure for conveying, the charging aperture for accepting outer cover are connected with preheating the discharging opening of induction system.
The microwave heating equipment includes the first cavity on the outside of undertaking outer cover and the microwave in the first cavity
Dry heat chamber, the material for accepting outer cover is electromagnetic wave transparent material.
The microwave drying heating chamber is multiple, and multiple microwave drying heating chambers are symmetrically set in accept the two of outer cover two-by-two
Side.
The microwave drying heating chamber is pyramid loudspeaker shape.
The preheating induction system includes being oriented to feeding device and for micro- to the material progress in guiding feeding device
The preheating apparatus of Wave heating.
The feeding device that is oriented to includes being oriented to outer cover and located at the guiding structure for conveying for being oriented to conveying material in outer cover, leads
It is connected to the discharging opening of outer cover with accepting the charging aperture of outer cover.Preferably, it is screw conveying structure to be oriented to structure for conveying.
The microwave that the preheating apparatus is included located at the second cavity being oriented on the outside of outer cover and in the second cavity is pre-
Heating chamber, the material for being oriented to outer cover is electromagnetic wave transparent material.The microwave source operating power of second cavity is more than the first cavity
Microwave source operating power.
The entrance point for being oriented to outer cover, the port of export for accepting outer cover and the connection end of guiding outer cover and undertaking outer cover are equal
Provided with microwave suppressor.
The guiding outer cover is equipped with air-vent with accepting outer cover.
The entrance point of the preheating induction system is provided with dehumidifier apparatus, and the port of export of the dry materials induction system is set
There is air-supply arrangement.
The guiding outer cover is cylindricality outer cover with accepting outer cover.The screw conveying structure and cylindricality outer cover are detachable
Connection.By the pitch for changing different screw conveying structures, you can control material falling speed, control its heat time.
Beneficial effects of the present invention：The present invention uses screw conveying structure so that material slides in spiral, adds material
Microwave Exposure time, different outer cover and helical structure assemblings are changed, can be with the heat time of control material.It is simultaneously because horn-like
Heating chamber it is symmetrically placed, make its heating evenly.The present invention is dried using segmented, in advance by dry materials to certain journey
Degree, will not make material the decline for overheating and causing quality occur, then is dried with smaller power, and whole flow process makes material progressively
Uniformly efficient realize of heating dries target.Meanwhile segmented is dried and adds dry controllability and alternative, according to can
Drying for processing materials requires to adjust with power with different processing technologys, structural adjustment that can be to two parts heating chamber, so that it may
Realize that different drying requires.This segmented microwave drying material system is simple in construction, convenient disassembly, perfect in shape and function and operation side
Just.
Brief description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the second cavity of the invention；
Fig. 3 is the structural representation of the screw conveying structure of the present invention；
Fig. 4 is the structural representation of cylindricality outer cover of the present invention；
Fig. 5 is the partial structural diagram that cylindricality outer cover of the present invention sets passage；
Fig. 6 is driving mechanism structure schematic diagram.
In figure mark for：
1st, feed hopper, the 2, first microwave suppressor, the 3, second microwave suppressor, the 4, the 3rd microwave suppressor, 5, dehumidifier dress
Put, 6, air-supply arrangement, the 7, second cavity, 8, pyramidal horn heating chamber, 9, be oriented to outer cover, 10, screw conveying structure, 11, thoroughly
Gas passage, 12, accept the discharging opening of outer cover, the 13, first cavity, 14, accept outer cover, 15, drive mechanism, 16, motor, 17, the
One rolling bearing, 18, first gear, 19, second gear, the 20, second rolling bearing.
Embodiment
Below against accompanying drawing, by the description to embodiment, embodiment of the invention is made further details of
Explanation, it is therefore an objective to help those skilled in the art to have more complete, accurate and deep reason to design of the invention, technical scheme
Solution, and contribute to its implementation.
As shown in Figures 1 to 6, a kind of segmented microwave drying material system, including feed hopper 1, the material that is sequentially connected
Induction system and dry materials induction system are preheated, feed hopper 1 is connected with preheating the charging aperture of induction system, dry materials
Induction system includes accepting feeding device and the microwave for carrying out microwave heating to the material accepted in feeding device heats dress
Put, accepting feeding device includes accepting outer cover 14 and located at the screw conveying structure 10 for accepting conveying material in outer cover 14, accepts
The charging aperture of outer cover 14 is connected with preheating the discharging opening of induction system.Screw conveying structure can realize that buffering material falls,
Material is set to have the sufficient time to be heated by microwave heating equipment.Screw conveying structure preferably detachably connects with accepting outer cover
Connect, for example neck is set at the both ends for accepting outer cover, the both ends of screw conveying structure are set respectively coordinates clamping with two necks
Projection, or accept outer cover both ends and screw conveying structure both ends set mounting hole, pass through fastener with installation
Undertaking outer cover is detachably fixed and is connected by the cooperation in hole with screw conveying structure.By the way of being detachably connected, ease of assembly
Change, can be with control material falling speed by changing the pitch and width of its inside spin structure for conveying, and then control it to add
The hot time.
Accept outer cover 14 and preferably use cylindricality outer cover, the upper and lower opening of cylindricality outer cover, free in and out material.Microwave
Heater is included located at the first cavity 13 and the microwave drying heating chamber in the first cavity 13 for accepting the outside of outer cover 14,
The material for accepting outer cover is electromagnetic wave transparent material, such as glass steel material, wave transparent plastics etc., it is preferred to use fiberglass.Microwave drying adds
Hot chamber is preferably several, and multiple microwave drying heating chambers are symmetrically set in the both sides for accepting outer cover two-by-two, makes its heating evenly.
Microwave drying heating chamber is preferably pyramid loudspeaker shape, and the heating chamber of pyramid loudspeaker shape can be used as microwave transmission line to propagate electromagnetism
Ripple, the frequency electromagnetic waves of pattern needed for generation, the radiation efficiency of electromagnetic wave can also be improved, meanwhile, pyramid loudspeaker shape is easy to adjust
The angle of whole H faces and E faces feeding device, it is easy to design different pyramid loudspeaker shape heating chambers, the contrast for experiment.To understand
The problem of certainly material heating is uneven during single heating chamber heating, the symmetrically placed pyramid in the first cavity for accepting outer cover both sides
Shape loudspeaker heating chamber 8, number of speakers can be increased and decreased according to actual processing request.
Conventional belt conveyor and electric heater unit can be used by preheating induction system, in order to ensure whole flow process
Progressively uniformly dry target is efficiently realized in heating to middle material, it is preferred that preheating induction system include being oriented to feeding device and
For carrying out the preheating apparatus of microwave heating to the material being oriented in feeding device.Wherein, it is defeated with accepting to be oriented to feeding device
Expect that the structure of device is similar or like, the structure of preheating apparatus and microwave heating equipment is similar or like.For example it is oriented to
Guiding structure for conveying of the feeding device using outer cover 9 is oriented to and located at conveying material in outer cover 9 is oriented to, is oriented to the discharging of outer cover 9
Mouth is connected with accepting the charging aperture of outer cover 14.Preferably, it is oriented to structure for conveying and is similarly screw conveying structure, using helical feed
The advantages of structure, is as described above, increase microwave heating time.Likewise, being oriented to outer cover preferably uses cylindricality outer cover, cylindricality outer cover
Upper and lower opening, the material for being oriented to outer cover is electromagnetic wave transparent material, be oriented to outer cover with accept outer cover can be onesize, same material
Cylindricality outer cover, its internal screw conveying structure is detachably connected with the use of cylindricality outer cover.When it is implemented, for the ease of
Simplify structure and optimization operational control, the screw conveying structure for being oriented to outer cover 9 and accepting in outer cover 14 (is passed using same stud
Moving axis) it is driven, specifically drive mechanism 15 can be set in the discharge port end for accepting outer cover 14, drive mechanism includes motor
16th, the first rolling bearing 17, the second rolling bearing 20 and bevel gear set, bevel gear set include first gear 18 and second gear
19, the drive end of motor is connected by the first rolling bearing 17 with first gear 18, drives the stud of screw conveying structure to pass through
Second rolling bearing 20 is connected with second gear, is started motor 16, is driven by motor driven bevel gear set, and then drives spiral
The drive axis of structure for conveying.Stud upper and lower side can be equipped with bearing, ensure not swing during its rotation of motor driven.The drive
Fixation is played using rolling bearing in motivation structure, the second rolling bearing ensures effective engaged transmission of bevel gear assembly, simultaneously
Fixation is risen to upper part screw conveying structure, avoids swinging during its rotation.
Preheating apparatus is included located at the second cavity 7 and the microwave pre-add in the second cavity 7 for being oriented to the outside of outer cover 9
Hot chamber.First cavity and the second cavity can use the cavity body structure of onesize, same material, microwave preheater and microwave
Dry heat chamber uses mutually isostructural pyramidal horn heating chamber 8, and its microwave emitter power of two parts cavity is different, the
The microwave source operating power of two cavitys 7 is more than the microwave source operating power of the first cavity 13.Can be in the second cavity first by material
Heat to a certain extent, then by dry materials to desired value in the first cavity.Such a structure setting conveniently adapts to different processing
The dry materials of technique, the power of the upper and lower heating chamber microwave source of flexibly changing.
In addition, in the entrance point for being oriented to outer cover 9, the port of export for accepting outer cover 14 and outer cover 9 is oriented to accepting outer cover 14
Connection end be equipped with microwave suppressor, can effectively control microwave from leakage, it is in safe range.Microwave suppressor can be with
It is simple in construction using nonstandard microwave suppressor, it is easy to manufacture.
It is oriented to outer cover and offers air-vent with accepting outer cover, when both of which uses cylindricality outer cover, is opened on its face of cylinder
If air-vent, as long as the pore size of air-vent does not allow material therefrom to spill, determined according to specific dried material.
For the ease of making inside cavity keep drying, dehumidifier apparatus, material are provided with the entrance point of preheating induction system
The port of export for drying induction system is provided with air-supply arrangement.Specifically, connection can be passed through between the first cavity and the second cavity
Passage is connected, and the first cavity can be connected by interface channel with dehumidifier apparatus, and the second cavity can be by interface channel with sending
Wind apparatus connects, and can also should all open up gas-permeable channels in the contact position of air-supply arrangement and dehumidifier apparatus and two cavitys, than
Such as pass passage, gas can be allowed by while requiring the anti-leak of microwave again, therefore the size in aperture is required.Its aperture
Size is whereinWherein γ is microwave wavelength.Air-supply arrangement includes being oriented to air-supply passage and led to located at air-supply is oriented to
Blower fan in road, it is oriented to air-supply passage and is connected with the second cavity；Dehumidifier apparatus includes dehumidifier passage and in dehumidifier passage
Dehumidifier, dehumidifier passage connect with the first cavity.
Certainly, according to specific drying process demand, multiple dry materials induction systems being sequentially connected can be set, its
Concrete structure sets to adopt and realized in manner just described.Dried material can be exported by material output system, such as
Dried material is exported in final undertaking outer cover discharging opening connection belt transmission agency.
The present invention is exemplarily described above in association with accompanying drawing.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as employ the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress；Or not
It is improved, the above-mentioned design of the present invention and technical scheme are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (10)
1. a kind of segmented microwave drying material system, including the material preheating induction system and dry materials that are sequentially connected are defeated
Send system, it is characterised in that：The dry materials induction system includes accepting feeding device and for accepting in feeding device
Material carry out microwave heating microwave heating equipment, it is described undertaking feeding device include accept outer cover and located at accept outer cover in
The screw conveying structure of material is conveyed, the charging aperture for accepting outer cover is connected with preheating the discharging opening of induction system.
2. segmented microwave drying material system according to claim 1, it is characterised in that：The microwave heating equipment includes
The first cavity on the outside of undertaking outer cover and the microwave drying heating chamber in the first cavity, the material for accepting outer cover
For electromagnetic wave transparent material.
3. segmented microwave drying material system according to claim 2, it is characterised in that：The microwave drying heating chamber is
It is multiple, and multiple microwave drying heating chambers are symmetrically set in the both sides for accepting outer cover two-by-two.
4. segmented microwave drying material system according to claim 3, it is characterised in that：The microwave drying heating chamber is
Pyramid loudspeaker shape.
5. segmented microwave drying material system according to claim 2, it is characterised in that：The preheating induction system bag
Include and be oriented to feeding device and the preheating apparatus for carrying out microwave heating to the material being oriented in feeding device.
6. segmented microwave drying material system according to claim 5, it is characterised in that：The guiding feeding device includes
It is oriented to outer cover and located at the guiding structure for conveying for being oriented to conveying material in outer cover, is oriented to the discharging opening of outer cover and accepts entering for outer cover
Material mouth connects.
7. segmented microwave drying material system according to claim 6, it is characterised in that：The preheating apparatus includes setting
In the second cavity and the microwave preheater in the second cavity that are oriented on the outside of outer cover, the material of the guiding outer cover is
Wave material.
8. according to the segmented microwave drying material system of claim 6 or 7, it is characterised in that：It is described to be oriented to entering for outer cover
Mouth end, the port of export for accepting outer cover and guiding outer cover are equipped with microwave suppressor with accepting the connection end of outer cover.
9. segmented microwave drying material system according to claim 6, it is characterised in that：The guiding outer cover is outer with accepting
Cover is equipped with air-vent.
10. segmented microwave drying material system according to claim 1, it is characterised in that：The preheating induction system
Entrance point be provided with dehumidifier apparatus, the port of export of the dry materials induction system is provided with air-supply arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711269237.XA CN107869898A (en) | 2017-12-05 | 2017-12-05 | A kind of segmented microwave drying material system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711269237.XA CN107869898A (en) | 2017-12-05 | 2017-12-05 | A kind of segmented microwave drying material system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107869898A true CN107869898A (en) | 2018-04-03 |
Family
ID=61755244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711269237.XA Pending CN107869898A (en) | 2017-12-05 | 2017-12-05 | A kind of segmented microwave drying material system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107869898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022021467A1 (en) * | 2020-07-30 | 2022-02-03 | 广东永畅兴精密制造股份有限公司 | Microwave-enhanced extruder device and organic reaction module |
| CN114766544A (en) * | 2022-04-20 | 2022-07-22 | 江汉大学 | Bean drying production line, microwave drying device and preparation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393132A (en) * | 2011-11-14 | 2012-03-28 | 山东博润工业技术有限公司 | Vertical microwave drying coal furnace |
| CN102706119A (en) * | 2012-05-15 | 2012-10-03 | 安徽省凤阳染料化工有限公司 | Secondary drying device for dye |
| CN205435677U (en) * | 2016-02-26 | 2016-08-10 | 长春师范大学 | Chemical industry reation kettle who takes drying function preheats feed arrangement |
| CN206478948U (en) * | 2017-01-19 | 2017-09-08 | 贵阳永乐药业有限公司 | Microwave vacuum dryer pre-processes feeding device |
| CN207635799U (en) * | 2017-12-05 | 2018-07-20 | 安徽工程大学 | Segmented microwave drying material system |
-
2017
- 2017-12-05 CN CN201711269237.XA patent/CN107869898A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393132A (en) * | 2011-11-14 | 2012-03-28 | 山东博润工业技术有限公司 | Vertical microwave drying coal furnace |
| CN102706119A (en) * | 2012-05-15 | 2012-10-03 | 安徽省凤阳染料化工有限公司 | Secondary drying device for dye |
| CN205435677U (en) * | 2016-02-26 | 2016-08-10 | 长春师范大学 | Chemical industry reation kettle who takes drying function preheats feed arrangement |
| CN206478948U (en) * | 2017-01-19 | 2017-09-08 | 贵阳永乐药业有限公司 | Microwave vacuum dryer pre-processes feeding device |
| CN207635799U (en) * | 2017-12-05 | 2018-07-20 | 安徽工程大学 | Segmented microwave drying material system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022021467A1 (en) * | 2020-07-30 | 2022-02-03 | 广东永畅兴精密制造股份有限公司 | Microwave-enhanced extruder device and organic reaction module |
| CN114766544A (en) * | 2022-04-20 | 2022-07-22 | 江汉大学 | Bean drying production line, microwave drying device and preparation method |
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Application publication date: 20180403 |
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