CN106334508B - A kind of continuous conveying type focused microwave reactor - Google Patents

A kind of continuous conveying type focused microwave reactor Download PDF

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Publication number
CN106334508B
CN106334508B CN201610793777.7A CN201610793777A CN106334508B CN 106334508 B CN106334508 B CN 106334508B CN 201610793777 A CN201610793777 A CN 201610793777A CN 106334508 B CN106334508 B CN 106334508B
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metal
metal cavity
radiating horn
cavity
mirror
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CN106334508A (en
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程钰间
薛飞
钟熠辰
雷星宇
樊勇
张波
林先其
张永鸿
赵明华
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University of Electronic Science and Technology of China
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/126—Microwaves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/701—Feed lines using microwave applicators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/76—Prevention of microwave leakage, e.g. door sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/12—Processes employing electromagnetic waves
    • B01J2219/1203—Incoherent waves
    • B01J2219/1206—Microwaves
    • B01J2219/1209—Features relating to the reactor or vessel
    • B01J2219/1221—Features relating to the reactor or vessel the reactor per se
    • B01J2219/1239—Means for feeding and evacuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/12—Processes employing electromagnetic waves
    • B01J2219/1203—Incoherent waves
    • B01J2219/1206—Microwaves
    • B01J2219/1209—Features relating to the reactor or vessel
    • B01J2219/1221—Features relating to the reactor or vessel the reactor per se
    • B01J2219/1242—Materials of construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/12—Processes employing electromagnetic waves
    • B01J2219/1203—Incoherent waves
    • B01J2219/1206—Microwaves
    • B01J2219/1275—Controlling the microwave irradiation variables
    • B01J2219/1281—Frequency

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention belongs to Pulse width device fields, provide a kind of continuous conveying type focused microwave reactor, including reaction unit, transmitting device, feeder equipment and support device；It is characterized in that, feeder equipment includes metal mirror, radiating horn, coaxial transmission line, waveguide coaxial connecter and microwave source, metal mirror is set to metal cavity top surface inner wall, microwave source connect radiating horn by coaxial transmission line with waveguide coaxial connecter, radiating horn is fixed on metal cavity side wall and is radiated at an angle across metal cavity and with cavity wall inclination, and the focus of metal mirror is made to be located on radiating horn main lobe direction.The present invention is in such a way that feed-in metallic walls in waveguide side reflect and focus realization field strength maximum point irradiating and detecting object, to improve reaction efficiency, accelerate reaction speed, improves the reaction uniformity and energy saving, and be combined it with the formula production line of continuously transmitting, it is applied in large-scale industrial production.

Description

A kind of continuous conveying type focused microwave reactor
Technical background
The invention belongs to Pulse width device field, more particularly to continuous conveying type focused microwave reactor.
Background technology
In recent years, HIGH-POWERED MICROWAVES reactor has been widely used for heating, medical treatment, drying, plated film, environmental protection, auxiliary extraction It the occasions such as takes, obtains good effect；But the reactor for solid material processing still faces problems.First, micro- The application of wave energy enters the stage of heavy industrialization, and the microwave reactor of single treatment has no longer adapted to the continuous life of industrialization The needs of production；As Publication No. CN102946655A patent document in, to solid material needs material is manually placed into every time In reactor, manually taken out again after the completion of reaction, efficiency is low, cumbersome, safety is poor.Secondly, with Pulse width Increasingly deeply, there are many microwave reactors for the formula that continuously transmits to be applied in various industrial productions, such as research：Rectangular waveguide Formula reactor, ridge ripple conduction reactor, planar waveguide reactor；They belong to singlemode resonance type micro-wave reactor, certain The shortcomings of it is small that there is capacity in degree, and field distribution is uneven, and microwave energy is utilized and is not enough, and process velocity is partially slow；Although circle Waveguide reactor solves the problems, such as these to a certain extent, but it is still singlemode resonance formula, and capacity is smaller, is only capable of processing small size A small amount of sample cannot meet the active demand of large volume material Continuous maching；Such as the patent text of Publication No. CN105338677A Offer it is middle a kind of duct type industrial microwave heating device is disclosed, microwave feedthrough is uniformly arranged on outside pipeline configuration, by changing Become the structure of microwave heating chamber, fundamentally change the pattern of Microwave Industry heating, improves the efficiency of heating surface, but it is still using wave It leads the heating of feed-in form and needs to be realized by multiple microwave sources, feed structure is complicated, and material filling is troublesome in poeration, and is difficult to add The larger material of work.
For the application demand of large-scale microwave reactor, disresonance type microwave reaction chamber is suggested, and the volume of reaction chamber is big It is big to improve；Its principle is by rationally designing, and the direct feed into large-scale reaction chamber generates a variety of field modes, makes the field of intracavitary A certain specific region is concentrated on, while placing conduit, conveyer belt etc. here and being collected by field with making object continuously and smoothly to be processed Middle region, to achieve the purpose that heating or improve chemical reaction rate；But it still faces field not concentrate, reacts lack of homogeneity, Reaction efficiency is low, and energy consumption is big, it is difficult to the shortcomings of processing solid.As Publication No. CN104667849A patent document in use snake Shape waveguide feed is only capable of carrying out Continuous maching to gas and liquid sample, while snakelike waveguide feed and uneven, after waveguide End radiation is more and more weaker, and the energy that most end also needs device absorption not radiate causes to waste.
According to the application demand of existing large-scale industry microwave reactor, needing one kind, efficiently, uniformly, quickly large size connects Continuous type micro-wave reactor is engaged with existing production line, is reduced energy consumption, raising efficiency to reach, is ensured the mesh of processing consistency 's.Based on this, the present invention is directed to the feeding classification of large-scale disresonance type microwave reactor and field distribution carries out innovative improvement, with Further improve the reaction effect of reactor.
Invention content
The purpose of the present invention is to solve the shortcomings of the prior art place, provides a kind of continuous conveying type focused microwave reaction The mode that existing waveguide mouth is fed directly into microwave irradiation reactant is changed to focus using the reflection of waveguide side feed-in metallic walls by device The mode for realizing field strength maximum point irradiating and detecting object accelerates reaction speed to improve reaction efficiency, improves the reaction uniformity and section The about energy, and it is combined with the formula production line of continuously transmitting, it is applied in large-scale industrial production.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of continuous conveying type focused microwave reactor, including reaction unit, transmitting device, feeder equipment and support dress It sets；
The reaction unit includes cube hollow metal cavity (11), is set on metal cavity one side and extends outwardly The not closed cube hollow metal feed inlet (12) in both ends, be correspondingly arranged the consistent discharge port of shape size on another side (13), absorbing material is attached on the inner wall of feed inlet (12) and discharge port (13)；
The transmitting device includes：Conveyer belt (21), power idler wheel (22), back-up roller wheel (23) and adjustable speed motor pass Band is sent to pass through metal cavity (11), feed inlet (12) and discharge port (13) and touched with its bottom connection, conveyer belt lower part is by several The rotatable back-up roller wheel support being uniformly arranged on the downside of metal cavity, conveyer belt are driven by power idler wheel (22), power idler wheel It is driven by adjustable speed motor；
The feeder equipment includes：Metal mirror (31), radiating horn (32), coaxial transmission line (33), Waveguide coaxial Convert (34) and microwave source (35)；Wherein, metal mirror (31) is set to metal cavity (11) top surface inner wall, microwave source (35) Radiating horn (32) is connect with waveguide coaxial connecter by coaxial transmission line, radiating horn is fixed on metal cavity (11) side wall, And radiating horn passes through metal cavity (11) and is radiated at an angle with cavity wall inclination, makes the focus position of metal mirror (31) In on radiating horn main lobe direction；
The support device includes：Load-bearing workbench (4)；Reaction unit, transmitting device and feeder equipment are set to load-bearing On workbench；Load-bearing workbench fixes on the ground.
Further, the shape of the metal mirror (31) is by radiating horn to metal mirror and mirror field to ideal The path of focus point determines, meets following distribution：
Wherein, d is the half of metal cavity width, h1For radiating horn height, h is metal cavity height；L is path length Degree.
The present invention is a kind of continuous conveying type focused microwave reactor, is radiated by radiating horn and anti-by metal mirror Focused electromagnetic wave is projected to act on processing materials, since focus characteristics reduce loss when electromagnetic wave is propagated in space, Its field strength is concentrated with energy, and penetration power is strong, even action, and electric field and reactant has been significantly increased in efficient advantage The total volume of effect improves reaction efficiency, reduces energy consumption, cost-effective.Focused electromagnetic wave needs radiating horn full with reflecting surface Width distributed mutually needed for sufficient focus characteristics, the i.e. shape of metal mirror by radiating horn to metal mirror and mirror field to The path of ideal focusing point determines that satisfaction its path when reaching test point by different pips is identical to be focused to realize, Specifically it is distributed as：
Metal mirror shape is determined using above-mentioned equation.Based on test point, radiant, metal cavity upper wall central point three Point establishes auxiliary coordinates, and the equation needed for being focused at detectable substance is established based on optical path；Metal mirror and metal cavity Upper wall center point contact, wherein d is the half of metal cavity width, h1For radiating horn height, h is metal cavity height；L For required path length；At this point, good focusing will be realized by meeting the electromagnetic wave of the slave metal mirror reflection of above-mentioned equation Characteristic, it is concentrated with energy, and even action, depth of interaction is adjustable, efficient advantage.
The strip coal cinder that the length of side is 100mm in cross section is in the lateral comparison of reactant, with existing continuous directly feedback Electric-type microwave reactor is compared, the focused microwave reactor reaction improved efficiency 2 times or more in the present invention, while in reactant Portion can keep good reaction uniformity；Inside reactant, (i.e. the object of unit volume is absorbent to microwave for specific absorption rate Efficiency) maximum value and minimum value differ only by 9%, this shows that all reactants can obtain good and efficient reaction, no It will appear the situation of the partial reaction object underaction in traditional reactor and another part reaction excess, this is also reduced indirectly Demand to microwave source output power has saved cost while reducing energy consumption.
To sum up, the beneficial effects of the present invention are：
1, the present invention is different from existing direct feed formula, and feed structure realizes focusing illumination reaction by specific reflection face Material avoids the influence extended during Electromagnetic Wave Propagation, and electromagnetic energy is concentrated, and even action, depth of interaction is adjustable, reaction It is efficient, it is energy saving.
2, feed structure is very simple in the present invention, only needs radiating horn to be connect by coaxial line with microwave source, nothing Complicated feed structure is needed, phase compensation is realized by metal mirror.
3, using disresonance type structure, metal cavity shaped volumes are not limited by field mode and resonance point, solid in large size There is unique advantage in terms of the processing of body material, can be combined with continuous continuous-flow type production line, be applied to large-scale industry metaplasia In production.
4, charging of the invention and discharge port open, and the absorbing cavity that laying absorbing material is utilized inhibits microwave leakage, Open structure makes sample that can continuously be directly entered, and microwave leakage is minimum, securely and reliably.
Description of the drawings
Fig. 1 is the front view that microwave reactor of the present invention removes idler wheel and motor part；
Fig. 2 is microwave reactor left view of the present invention；
Fig. 3 is the auxiliary coordinates of microwave reactor front view of the present invention；
Fig. 4 is the three-view diagram of metal mirror 31 of the present invention；
In figure：11 be metal cavity, and 12 be feed inlet, and 13 be discharge port, and 21 be conveyer belt, and 22 be power idler wheel, and 23 are Back-up roller wheel, 31 be metal mirror, and 32 be radiating horn, and 33 be microwave source, and 4 be load-bearing workbench.
Specific implementation mode
The present invention is described in more detail with reference to the accompanying drawings and examples.
Embodiment
The present embodiment provides a kind of continuous conveying type focused microwave reactors, including reaction unit, transmitting device, feed dress It sets and support device, which is characterized in that reaction unit includes cube hollow metal cavity (11), is arranged in metal cavity one end The not closed cube hollow metal feed inlet (12) in outwardly extending both ends on face is correspondingly arranged shape size on other end Thin absorbing material is attached to prevent microwave leakage on the inner wall of consistent discharge port (13), feed inlet (12) and discharge port (13)； Transmitting device includes：Conveyer belt (21), adjustable speed motor, power idler wheel (22) and back-up roller wheel (23), conveyer belt pass through metal Cavity (11), feed inlet (12) and discharge port (13) are simultaneously touched with its bottom connection, and conveyer belt lower part is uniformly arranged on gold by several Belong to the rotatable back-up roller wheel support on the downside of cavity, conveyer belt is driven by power idler wheel, and power idler wheel is driven by adjustable speed motor； Feeder equipment includes：Metal mirror (31), radiating horn (32), coaxial transmission line (33), waveguide coaxial connecter (34) and micro- Wave source (35)；Wherein microwave source (35) connect radiating horn (32), radiating horn by coaxial transmission line with waveguide coaxial connecter (32) it is fastened on side wall, radiating horn passes through metal cavity (11) and radiated at an angle with cavity wall inclination, metal The focus of reflecting surface (31) is located on radiating horn main beam.Support device includes：Load-bearing workbench (4)；Reaction unit, transmission Device and feeder equipment are set on load-bearing workbench；Load-bearing workbench fixes on the ground.
Continuous conveying type focused microwave reactor in the present invention is acted on by the metal mirror focused electromagnetic wave of rational deployment In on processing materials, have feed structure simple, energy is concentrated, different depth even action, efficient advantage, significantly The total volume for improving electric field and reactant effect, improves reaction efficiency, reduces energy consumption, cost-effective.Focused electromagnetic wave needs Radiating horn (32) and reflecting surface (31) meet the width distributed mutually needed for focus characteristics, i.e., the shape of metal mirror (31) by Radiating horn is determined to reflecting surface and mirror field to the path of ideal focusing point, is met and is reached test point by different pips Its path is identical.
The frequency of microwave source (35) should be different according to the physicochemical characteristics of processing object, find more appropriate Microwave Frequency The microwave energy of section, usual lower frequency keeps preferable penetrability to improve reaction uniformity；The size of metal cavity (11) Depending on the size of application scenarios object to be processed；The shape of feed inlet (12) and discharge port (13) cross section is according to machining object The shape and volume of part determine, can be rectangle, circle, semicircle etc., and inner wall pastes the plate rubber of RAT-2G types and inhales wave material Material is to prevent remaining microwave energy leakage, thus according to the output power and country 1mW/cm of microwave source2Greatest irradiation standard can Determine the length of inlet/outlet mouth；The overall length of metal cavity (11) can be obtained good reaction effect in 1m or more；Adjustable speed Motor (23) control processing object conveying speed, by it and microwave source (35) output power co- controlling microwave reaction degree and Rate；Radiating horn (32) is 26 standard-gain horn antennas of standard BJ.
The specific size of the present embodiment is：Metal cavity (11) long 1.5m, wide 1m, high 0.6m, material copper；Conveyer belt (21) width 0.6m, thick 4mm, material rubber；Microwave source (35) uses 2.4GHz-2.5GHz Frequency Adjustable amplitude modulation microwave sources, coaxial to pass Defeated line (34) uses the hard coaxial line of 50-16 types；Feed inlet (12) and discharge port (13) long 0.8m, wide 0.6m, high 0.3m, thick 2mm, Material copper, inner wall attach the plate rubber absorbing material of RAT-2G types, absorbing material Normal incidence reflectance rate be -15dB to - 20dB, when microwave source (35) output power is 3kW, leakage power density is 0.22mW/cm2, meet national standard；Radiate loudspeaker (32) it is 26 standard-gain horn antennas of BJ, long 270mm.
Further, above-mentioned technical proposal can change as shown below：(1) present invention is usually operated at 915MHz or 2.45GHz Civilian industry microwave frequency under, it is more to meet that different frequency microwave can be adapted to by changing metal mirror shape Demand；(2) transformation of shape can be made on cross section to adapt to processing object to feed inlet (12) and discharge port (13) Shape, such as rectangle, circle, ellipse make the electricity of the material import and export after attaching absorbing material by reasonable set its length Magnetic dispersion is less than 1mW/cm2；(3) multiple material can be used in conveyer belt 21, is such as transmitted as the rubber of skeleton using nylon, aramid fiber Band or high molecular material conveyer belt, material need to have lower loss and relatively thin thickness；It (4) can be according to required wave on radiating horn The shape of valve width adjustment waveguide mouth, is such as changed to circle, square etc..
The present invention uses near field reflections focusing illumination goal response object, has feed structure simple, and electric field strength is high, electromagnetism Energy is concentrated, and even action, depth of interaction is adjustable, the high advantage of reaction efficiency, absorption work(of the object to microwave at any point Rate calculation formula is：P=56.62 × 10-12fE2(wherein f is microwave frequency to ε ', and E is the electric field strength at this, and ε ' is material The imaginary part of complex dielectric permittivity).It is therefore seen that in the case where its dependent variable is constant, raising of the electric field strength to absorbed power is improved There is larger contribution, can achieve the purpose that improve reaction speed.
The above description is merely a specific embodiment, any feature disclosed in this specification, except non-specifically Narration, can be replaced by other alternative features that are equivalent or have similar purpose；Disclosed all features or all sides Method or in the process the step of, other than mutually exclusive feature and/or step, can be combined in any way.

Claims (2)

1. a kind of continuous conveying type focused microwave reactor, including reaction unit, transmitting device, feeder equipment and support device；
The reaction unit includes cube hollow metal cavity (11), is set to outwardly extending two on metal cavity one side Not closed cube hollow metal feed inlet (12) is held, the consistent discharge port of shape size is correspondingly arranged on another side (13), absorbing material is attached on the inner wall of feed inlet (12) and discharge port (13)；
The transmitting device includes：Conveyer belt (21), power idler wheel (22), back-up roller wheel (23) and adjustable speed motor, conveyer belt It is touched across metal cavity (11), feed inlet (12) and discharge port (13) and with its bottom connection, conveyer belt lower part is by several uniform The rotatable back-up roller wheel support being set on the downside of metal cavity, conveyer belt are driven by power idler wheel (22), and power idler wheel is by can Speed regulating motor drives；
The feeder equipment includes：Metal mirror (31), radiating horn (32), coaxial transmission line (33), waveguide coaxial connecter (34) and microwave source (35)；Wherein, metal mirror (31) is set to metal cavity (11) top surface inner wall, and microwave source (35) passes through Coaxial transmission line connect radiating horn (32) with waveguide coaxial connecter, and radiating horn is fixed on metal cavity (11) side wall, and spoke Loudspeaker are penetrated across metal cavity (11) and are radiated at an angle with cavity wall inclination, the focus of metal mirror (31) is made to be located at spoke It penetrates on loudspeaker main lobe direction；
The support device includes：Load-bearing workbench (4)；Reaction unit, transmitting device and feeder equipment are set to load-bearing work On platform；Load-bearing workbench fixes on the ground.
2. by continuous conveying type focused microwave reactor described in claim 1, which is characterized in that the metal mirror (31) Shape is determined by radiating horn to metal mirror and the path of mirror field to ideal focusing point, meets following distribution：
Wherein, d is the half of metal cavity width, h1For radiating horn height, h is metal cavity height；L is path length.
CN201610793777.7A 2016-08-31 2016-08-31 A kind of continuous conveying type focused microwave reactor Active CN106334508B (en)

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CN109364377B (en) * 2018-09-27 2020-06-26 西北核技术研究所 Device for realizing internal field intensity focusing of nonmetal effector in irradiation cavity
CN109688653B (en) * 2019-01-22 2020-06-26 江南大学 Microwave pipeline type heating rapid heating device
CN111239165B (en) * 2020-01-22 2023-07-21 西北核技术研究院 High-power impulse response testing device for antenna surface material
CN114432988A (en) * 2020-11-02 2022-05-06 中国石油化工股份有限公司 Continuous microwave reaction device and application thereof
CN114432989A (en) * 2020-11-02 2022-05-06 中国石油化工股份有限公司 Continuous internal feed type microwave reaction device and application thereof
CN115942529B (en) * 2022-12-22 2023-12-12 四川大学 Continuous flow microwave heating device and heating method

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CN102137800A (en) * 2008-08-27 2011-07-27 索尤若驱动有限及两合公司 Roller drive and system of roller drives
CN104258797A (en) * 2014-09-19 2015-01-07 电子科技大学 Continuous conveying type circular waveguide microwave reactor

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JP5940784B2 (en) * 2011-09-09 2016-06-29 国立大学法人埼玉大学 Non-contact power feeding device for moving objects

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Publication number Priority date Publication date Assignee Title
CN102137800A (en) * 2008-08-27 2011-07-27 索尤若驱动有限及两合公司 Roller drive and system of roller drives
CN104258797A (en) * 2014-09-19 2015-01-07 电子科技大学 Continuous conveying type circular waveguide microwave reactor

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