CN104470022A - Powder microwave heating device and use method thereof - Google Patents
Powder microwave heating device and use method thereof Download PDFInfo
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- CN104470022A CN104470022A CN201410639097.0A CN201410639097A CN104470022A CN 104470022 A CN104470022 A CN 104470022A CN 201410639097 A CN201410639097 A CN 201410639097A CN 104470022 A CN104470022 A CN 104470022A
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Abstract
A powder microwave heating device comprises a spiral pushing device and a heating bin, wherein the heating bin is of a closed tubular structure and composed of an inner pipe (6) and an outer pipe (10); the spiral pushing device comprises a forming conical sleeve (5) of a tubular structure, one end of the forming conical sleeve (5) is closed, a discharging outlet of a powder bin (2) is connected with a feeding inlet in the side wall of the forming conical sleeve (5), a spiral push rod (4) arranged in an inner cavity of the forming conical sleeve is arranged below the feeding inlet in the side wall of the forming conical sleeve, a shaft of the spiral push rod (4) penetrates through the closed end of the forming conical sleeve (5) to be connected with a motor, and the spiral pushing device is formed. The powder microwave heating device is simple in structure, convenient to operate and wide in universality.
Description
Technical field
The present invention relates to powder field of microwave heating, particularly relate to a kind of powder microwave heating equipment and using method thereof.
Background technology
Powder traditional heating mode is for thermal source by combustion fuel, resistance heating etc., it is by radiation, conduction heat transfer mode that powder obtains heat generating temperature rising, powder thermal energy transfer, temperature raise, and heating is slow, the heat efficiency is not high, there is the core table temperature difference.
Microwave heating is that microwave source applies an extra electric field alternately changed to heating powder, for microwave frequency mainly 915MHz, 2450MHz of industry heating, it is huge that polar molecule in powder was done to swing the heat energy produced with such frequency in one second, the frequency of extra electric field is higher, polar molecule swings faster, the heat energy produced is more, and penetration depth is just corresponding less; Extra electric field is stronger, and polar molecule wobble amplitude is larger, and the heat energy of generation is larger, so the power improving magnetron is the effective means improving heating intensity.Also material impact is had to the depth of microwave penetration, heating intensity by the dielectric constant of heating powder, dielectric loss angle tangent.
Microwave heating equipment is widely used in producing, living.Household microwave oven is the main application in life, and general low-power magnetron just can meet the demands; Industrial application needs large heating power, and current solution one is: use high power magnetron, but due to high power magnetron manufacture difficulty high, price is very expensive; Two is increase low-power magnetron quantity to increase firing equipment gross power, this also brings new problem: the microwave source produced due to each magnetron may accomplish same-phase hardly, can not effectively accomplish that power accumulation superposes, on the contrary because irradiation mutual between magnetron causes the aging quickening of magnetron, and also there are many restrictions because the depth of microwave penetration is limited to the heating volume of thing, shape.
Summary of the invention
In order to realize using some low-power magnetrons powder heated and realize power accumulation superposition, the present invention adopts and allows powder in flowing, be subject to the microwave irradiation of some magnetrons, and by the use of reflection tube, powder is separated further, make powder heat penetration consistent with the depth of microwave penetration.Object of the present invention is achieved through the following technical solutions.
A kind of powder microwave heating equipment, the present invention is characterised in that, this heater comprises spiral pusher device and heating cabinet; Heating cabinet is airtight tubular structure, is made up of interior pipe and outer tube; Spiral pusher device comprises the shaping tapered sleeve of the tubular structure closed one end, the discharging opening of powder material warehouse is connected with the charging aperture be located on shaping tapered sleeve sidewall, the spiral handspike be located in the inner chamber of shaping tapered sleeve is placed in the below of the charging aperture on shaping tapered sleeve sidewall, the axle of spiral handspike is connected with motor through the blind end of shaping tapered sleeve, formation spiral pusher device; The discharge end that outside dimension is less than the shaping tapered sleeve of inner tube diameter extend in interior pipe feed end through one end of outer tube, and the discharge end that outside dimension is less than the interior pipe of discharge nozzle internal diameter extend in the discharge nozzle through the outer tube other end; Submit mistake at outer tube and be provided with waveguide, waveguide open at one end approaches outer wall of inner tube through outer tube wall, and the waveguide other end is provided with heating microwave source; The center line of spiral handspike, shaping tapered sleeve overlaps with heating cabinet center line and jointly forms described heater devices center line, and described heater devices center line and horizontal plane keep an angle, and this angle is close but be not more than powder self-flowing angle to be heated; In heating cabinet, between pipe and outer tube, dense packing effect can through the insulation material of microwave.
The present invention runs through interior pipe along heater devices center line and arranges a reflection tube, described reflection tube adopts energy microwave reflection, exotic material makes, described reflection tube one end is fixed on discharge nozzle tube wall and is stretched out discharge nozzle through discharging tube wall, and the described reflection tube other end is fixed on shaping tapered sleeve inwall.
The high temperature resistant wave-permeable earthenware of interior Guan Weizhi of the present invention.
Outer tube of the present invention is straight high temperature resistant stainless steel pipe, and the cross sectional dimensions of outer tube, length dimension meet the transmission conditions of the corresponding microwave of adopted frequency.
The insulation material be filled in heating cabinet between pipe and outer tube of the present invention is high density aluminum oxide ceramic beaverboard.
Distance between the outer wall of reflection tube of the present invention and inner tube wall close to and be not less than and heated 1/2nd of the powder depth of microwave penetration.
The present invention heats microwave source to the distance of reflection tube outer wall and meets impinging microwave and the synchronous condition of reflection tube microwave reflection.
Reflection tube of the present invention is sleeve pipe, and centre can Water cooling.
The using method of a kind of powder microwave heating equipment of the present invention, powder heating steps is:
1) powder preparation: the powder being crushed to < 100 microns is loaded powder material warehouse for subsequent use, powder material warehouse is that airtight bucket body structure bottom opening is communicated with spiral pusher device charging aperture;
2) powder enters spiral pusher device charging aperture from powder material warehouse, spiral handspike rotates and powder propelling movement is covered into interior pipe through forming cone, connect the heating microwave source power supply that outer tube outer wall arranges, the microwave transparent inner tubal wall irradiation that heating microwave source sends flows through the powder of interior pipe, microwave penetration powder reflects through reflection tube, because heating microwave source meets impinging microwave and microwave reflection same-phase to reflection tube outer wall distance, microwave reflection is not to impinging microwave interference offset, and due to the distance between the outer wall of reflection tube and inner tube wall close to and be not less than and heat 1/2nd of the powder depth of microwave penetration, microwave reflection is all exhaustion before penetrating powder, irradiation is not produced to microwave source, powder absorbs microwave energy and is rapidly heated, powder moves through in the process of interior pipe the irradiation temperature being subject to multiple heating microwave source and constantly raises, and controls powder move through the heating cabinet time thus control powder heating-up temperature by adjustment spiral pusher device rotary speed.
A kind of powder microwave heating equipment, comprising: spiral pusher device, heating cabinet; Heating cabinet is made up of interior pipe and outer tube, it is characterized in that, interior Guan Youneng makes through microwave, material that is high temperature resistant, heat shock resistance; Outer tube is made up of energy microwave reflection, exotic material.
The equipment inclination angle that heater devices center line and horizontal plane are formed close to and be not more than powder self-flowing angle, the powder in interior pipe is at any time to flow critical condition.
The perforate that interlocks of heating cabinet outer tube arranges heating microwave source, and heating cabinet outer tube is divided into some bringing-up section faces at length direction, and each bringing-up section face arranges some heating microwave sources, and waveguide opening approaches outer wall of inner tube.
Run through interior pipe along heater devices center line and arrange a reflection tube, described reflection tube is made up of energy microwave reflection, exotic material, it is characterized in that, distance between the outer wall of reflection tube and inner tube wall close to and be not less than and heated 1/2nd of the powder depth of microwave penetration, and each microwave source to the distance of reflection tube outer wall meets impinging microwave and the synchronous condition of microwave reflection.
Powder heating steps of the present invention is:
1, powder preparation: the powder being crushed to < 100 microns is loaded powder material warehouse for subsequent use, powder material warehouse is that airtight bucket body structure bottom opening is communicated with spiral pusher device charging aperture;
2, heater is made up of spiral pusher device and heating cabinet.Spiral pusher device adopts rotating speed adjustable, spiral handspike, shaping tapered sleeve center line overlap with heating cabinet center line and jointly form heater devices center line, spiral pusher device one end of heater is upwards raised and is made heater devices center line and horizontal plane keep an equipment inclination angle, equipment inclination angle close to but be not more than powder self-flowing angle, allow the powder through heater be in to flow critical condition at any time;
Heating cabinet is airtight tubular structure, be made up of interior pipe and outer tube, interior pipe is straight tube by can through microwave, high temperature resistant, heat shock resistance, the material manufacture of high strength, preferred nitrogen SiClx earthenware, interior pipe discharge end extend into outer tube discharging opening, the forming cone cover discharge end outside dimension of spiral pusher device is less than inner tube diameter and part extend in interior pipe feed end, run through pipe in interior pipe along heater devices center line and arrange reflection tube, described reflection tube one end is fixed on discharging tube wall and stretches out discharge nozzle, described reflection tube is can keep reflection tube intensity by Water cooling in the middle of sleeve pipe, the described reflection tube other end is fixed on shaping tapered sleeve, and fixing point reserves the space that enough powders pass through,
Heating cabinet outer tube is that straight tube is by microwave reflection, high temperature resistant, high-strength material manufacture, preferred high temperature resistant stainless steel, the cross sectional dimensions of outer tube, length dimension meet the transmission conditions of the corresponding microwave of adopted frequency, the outer tube outer wall perforate that interlocks arranges heating microwave source, the waveguide opening of described heating microwave source approaches outer wall of inner tube, and the direct irradiation of the microwave that microwave source is produced is in the powder by interior pipe; Outer tube feed end and spiral pusher device close to be installed, and outer tube discharge end and discharge nozzle close to be installed; In heating cabinet, between pipe and outer tube, dense packing effect can through microwave, resistant to elevated temperatures insulation material, preferred high density aluminum oxide ceramic beaverboard;
Powder enters spiral pusher device charging aperture from powder material warehouse, powder propelling movement covers in heating cabinet through forming cone and manages by spiral handspike rotation, connect the heating microwave source power supply that heating cabinet outer tube outer wall arranges, the microwave transparent inner tubal wall irradiation that heating microwave source sends flows through the powder of interior pipe, microwave penetration powder reflects through reflection tube, because microwave source meets impinging microwave and microwave reflection same-phase to reflection tube outer wall distance, microwave reflection is not to impinging microwave interference offset, and due to the distance between the outer wall of reflection tube and inner tube wall close to and be not less than and heat 1/2nd of the powder depth of microwave penetration, microwave reflection is all exhaustion before penetrating powder, irradiation is not produced to microwave source, powder absorbs microwave energy and is rapidly heated, powder moves through in the process of interior pipe the irradiation temperature being subject to multiple heating microwave source and constantly raises, and controls powder move through the heating cabinet time thus control powder heating-up temperature by adjustment spiral pusher device rotary speed.
The present invention mainly contains following advantage:
1, equipment inclination angle close to but be not more than powder self-flowing angle, the powder through heater is allowed to be in from flowing critical condition at any time, heating cabinet length can arrange microwave source according to the corresponding adjustment of the needs of heating-up temperature, and need not worry that powder is pushed away tighter and tighter by spiral handspike in interior pipe;
2, some low-power magnetrons arrange and form some bringing-up section faces, and powder is being subject to all microwave sources irradiation through these bringing-up section faces is heated, and achieve the accumulation superposition of some low-power magnetron power;
3, the powder constantly movement in interior pipe, makes powder be heated evenly, and eliminates and adds cold spot, the focus hankered;
4, because microwave source to reflection tube outer wall distance meets impinging microwave and microwave reflection same-phase condition, microwave reflection is not to impinging microwave interference offset; Distance between the outer wall of reflection tube and inner tube wall close to and be not less than and heat 1/2nd of the powder depth of microwave penetration, microwave reflection is all exhaustion before penetrating powder, and not to microwave source generation irradiation, powder absorption microwave energy is rapidly heated;
5, waveguide opening approaches outer wall of inner tube, reflection tube orienting reflex impinging microwave, effectively reduces mutual interference that is adjacent and subtend magnetron, extends the useful life of magnetron;
6, equipment possesses extensive versatility, and the some material powders reacted by related chemistry when powder form in proportion, and this device just can be used as microwave chemical reaction apparatus and uses;
7, equipment possesses extensive versatility, reflection tube is except can microwave reflection, can also as gas phase, liquid phase reactor thing conveyance conduit, such as in the gasification reaction producing water-gas, reflection tube is as the conveyance conduit of steam, and this device just can be used as gas producing device.
Content of the present invention is set forth further below in conjunction with drawings and Examples.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In Fig. 1, label is: 1, powder; 2, powder material warehouse; 3, motor; 4, spiral handspike; 5, shaping tapered sleeve; 6, interior pipe; 7, heater devices center line; 8, horizontal plane; 9, equipment inclination angle; 10, outer tube; 11, microwave source is heated; 12, waveguide; 13, reflection tube; 14, outer tube discharging opening; 15, discharge nozzle.
Embodiment
A kind of powder microwave heating equipment, the present invention is characterised in that, this heater comprises spiral pusher device and heating cabinet; Heating cabinet is airtight tubular structure, is made up of with outer tube 10 interior pipe 6; Spiral pusher device comprises the shaping tapered sleeve 5 of the tubular structure closed one end, the discharging opening of powder material warehouse 2 is connected with the charging aperture be located on shaping tapered sleeve 5 sidewall, the spiral handspike 4 be located in the inner chamber of shaping tapered sleeve is placed in the below of the charging aperture on shaping tapered sleeve sidewall, the axle of spiral handspike 4 is connected with motor through the blind end of shaping tapered sleeve 5, formation spiral pusher device; The discharge end that outside dimension is less than the shaping tapered sleeve of interior pipe 6 internal diameter extend in interior pipe 6 feed end through one end of outer tube 10, and the discharge end that outside dimension is less than the interior pipe of discharge nozzle 15 internal diameter extend in the discharge nozzle 15 through outer tube 10 other end; Outer tube 10 interlocks and is provided with waveguide 12, waveguide 12 open at one end approaches interior pipe 6 outer wall through outer tube wall, and waveguide 12 other end is provided with heating microwave source 11; The center line of spiral handspike 4, shaping tapered sleeve 5 overlaps with heating cabinet center line and jointly forms described heater devices center line 7, and described heater devices center line 7 and horizontal plane keep an angle, and this angle is close but be not more than powder self-flowing angle to be heated; In heating cabinet, between pipe 6 and outer tube 10, dense packing effect can through the insulation material of microwave.
The present invention runs through interior pipe along heater devices center line 7 and arranges a reflection tube 13, described reflection tube 13 adopts energy microwave reflection, exotic material makes, described reflection tube 13 one end is fixed on discharge nozzle 15 tube wall and is stretched out discharge nozzle through discharging tube wall, and the described reflection tube other end is fixed on shaping tapered sleeve 5 inwall.
Interior pipe 6 of the present invention is straight high temperature resistant wave-permeable earthenware.
Outer tube 10 of the present invention is straight high temperature resistant stainless steel pipe, and the cross sectional dimensions of outer tube, length dimension meet the transmission conditions of the corresponding microwave of adopted frequency.
The insulation material be filled in heating cabinet between pipe 6 and outer tube 10 of the present invention is high density aluminum oxide ceramic beaverboard.
Distance between the outer wall of reflection tube 13 of the present invention and interior pipe 6 inwall close to and be not less than and heated 1/2nd of the powder depth of microwave penetration.
The distance that the present invention heats microwave source 11 to reflection tube 13 outer wall meets impinging microwave and the synchronous condition of reflection tube microwave reflection.
Reflection tube 13 of the present invention is sleeve pipe, and centre can Water cooling.
The using method of a kind of powder microwave heating equipment of the present invention, powder heating steps is:
1) powder preparation: the powder 1 being crushed to < 100 microns is loaded powder material warehouse 2 for subsequent use, powder material warehouse 2 is that airtight bucket body structure bottom opening is communicated with spiral pusher device charging aperture;
2) powder 1 enters spiral pusher device charging aperture from powder material warehouse 2, spiral handspike 4 rotates powder 1 to push and enters interior pipe 6 through shaping tapered sleeve 5, connect heating microwave source 11 power supply that outer tube 10 outer wall arranges, the microwave transparent inner tubal wall irradiation that heating microwave source 11 sends flows through the powder 1 of interior pipe, microwave penetration powder reflects through reflection tube, because heating microwave source 11 to reflection tube outer wall distance meets impinging microwave and microwave reflection same-phase, microwave reflection is not to impinging microwave interference offset, and due to the distance between the outer wall of reflection tube 13 and interior pipe 6 inwall close to and be not less than and heat 1/2nd of the powder depth of microwave penetration, microwave reflection is all exhaustion before penetrating powder, irradiation is not produced to microwave source, powder 1 absorbs microwave energy and is rapidly heated, powder 1 moves through the irradiation temperature being subject to multiple heating microwave source 11 in the process of interior pipe 6 and constantly raises, and controls powder move through the heating cabinet time thus control powder heating-up temperature by adjustment spiral pusher device rotary speed.
embodiment 1,
See Fig. 1, being crushed to < 100 micro-powder 1, to load breeze feed bin 2 for subsequent use, control motor 3 rotating speed and make spiral handspike 4 rotating speed 50 revs/min, spiral handspike 4 rotates powder 1 to push and enters interior pipe 6 through shaping tapered sleeve 5, the equipment inclination angle 9 that heater devices center line 7 and horizontal plane 8 are formed close to and be not more than the self-flowing angle of powder 1, the powder 1 in interior pipe 6 is in oneself and flows critical condition, pipe in heating cabinet 6, outer tube 10 are divided into each bringing-up section face, 6 bringing-up section faces to arrange three 1.5KW magnetrons, gross power 27KW by the heating microwave source 11 that outer tube 10 outer wall arranges, and the opening of waveguide 12 approaches the outer wall of interior pipe 6, connect heating microwave source 11 power supply, pipe 6 tube wall radiating powder 1 in the microwave transparent that heating microwave source 11 sends, run through in interior pipe 6 along firing equipment center line 7 and arrange reflection tube 13, heating microwave source 11 to reflection tube 13 outer wall distance meets impinging microwave and microwave reflection same-phase, distance between the outer wall of reflection tube 13 and interior pipe 6 inwall close to and be not less than 1/2nd of the powder depth of microwave penetration, the microwave penetration powder 1 that heating microwave source 11 sends continues to be absorbed by powder 1 through reflection tube reflection, microwave energy is converted to heat energy in the process, powder 1 is rapidly heated, moved through outer tube discharging opening 14 by the powder 1 heated and enter discharge nozzle 15.
embodiment 2
See Fig. 1, being crushed to < 100 micro-powder 1, to load breeze feed bin 2 for subsequent use, control motor 3 rotating speed and make spiral handspike 4 rotating speed 80 revs/min, spiral handspike 4 rotates powder 1 to push and enters interior pipe 6 through shaping tapered sleeve 5, the equipment inclination angle 9 that heater devices center line 7 and horizontal plane 8 are formed close to and be not more than the self-flowing angle of powder 1, the powder 1 in interior pipe 6 is in oneself and flows critical condition, pipe in heating cabinet 6, outer tube 10 are divided into each bringing-up section face, 10 bringing-up section faces to arrange three 1.5KW magnetrons, gross power 45KW by the heating microwave source 11 that outer tube 10 outer wall arranges, and the opening of waveguide 12 approaches the outer wall of interior pipe 6, connect heating microwave source 11 power supply, pipe 6 tube wall radiating powder 1 in the microwave transparent that heating microwave source 11 sends, run through in interior pipe 6 along firing equipment center line 7 and arrange reflection tube 13, heating microwave source 11 to reflection tube 13 outer wall distance meets impinging microwave and microwave reflection same-phase, distance between the outer wall of reflection tube 13 and interior pipe 6 inwall close to and be not less than 1/2nd of the powder depth of microwave penetration, the microwave penetration powder 1 that heating microwave source 11 sends continues to be absorbed by powder 1 through reflection tube reflection, microwave energy is converted to heat energy in the process, powder 1 is rapidly heated, moved through outer tube discharging opening 14 by the powder 1 heated and enter discharge nozzle 15.
Claims (9)
1. a powder microwave heating equipment, is characterized in that, this heater comprises spiral pusher device and heating cabinet; Heating cabinet is airtight tubular structure, is made up of interior pipe (6) and outer tube (10); Spiral pusher device comprises the shaping tapered sleeve (5) of the tubular structure closed one end, the discharging opening of powder material warehouse (2) is connected with the charging aperture be located on shaping tapered sleeve (5) sidewall, the spiral handspike (4) be located in the inner chamber of shaping tapered sleeve is placed in the below of the charging aperture on shaping tapered sleeve sidewall, the axle of spiral handspike (4) is connected with motor through the blind end of shaping tapered sleeve (5), formation spiral pusher device; The discharge end that outside dimension is less than the shaping tapered sleeve of interior pipe (6) internal diameter extend in interior pipe (6) feed end through one end of outer tube (10), and the discharge end that outside dimension is less than the interior pipe of discharge nozzle (15) internal diameter extend in the discharge nozzle (15) through outer tube (10) other end; Be provided with waveguide (12) in outer tube (10) upper interlocking, waveguide (12) open at one end approaches interior pipe (6) outer wall through outer tube wall, and waveguide (12) other end is provided with heating microwave source (11); The center line of spiral handspike (4), shaping tapered sleeve (5) overlaps with heating cabinet center line and jointly forms described heater devices center line (7), described heater devices center line (7) and horizontal plane keep an angle, this angle close to but be not more than powder self-flowing angle to be heated; Dense packing effect insulation material between pipe (6) and outer tube (10) in heating cabinet.
2. a kind of powder microwave heating equipment according to claim 1, it is characterized in that, run through interior pipe along heater devices center line (7) and arrange a reflection tube (13), described reflection tube (13) one end is fixed on discharge nozzle (15) tube wall and is stretched out discharge nozzle through discharging tube wall, and the described reflection tube other end is fixed on shaping tapered sleeve (5) inwall.
3. a kind of powder microwave heating equipment according to claim 1, is characterized in that, described interior pipe (6) is straight high temperature resistant wave-permeable earthenware.
4. a kind of powder microwave heating equipment according to claim 1, is characterized in that, described outer tube (10) meets the transmission conditions of the corresponding microwave of adopted frequency for straight high temperature resistant stainless steel pipe, the cross sectional dimensions of outer tube, length dimension.
5. a kind of powder microwave heating equipment according to claim 1, is characterized in that, the described insulation material be filled in heating cabinet between pipe (6) and outer tube (10) is high density aluminum oxide ceramic beaverboard.
6. a kind of powder microwave heating equipment according to claim 2, is characterized in that, the distance between the outer wall of reflection tube (13) and interior pipe (6) inwall close to and be not less than and heated 1/2nd of the powder depth of microwave penetration.
7. a kind of powder microwave heating equipment according to claim 2, is characterized in that, heating microwave source (11) meets impinging microwave and the synchronous condition of reflection tube microwave reflection to the distance of reflection tube (13) outer wall.
8. a kind of powder microwave heating equipment according to claim 2 or 6 or 7, is characterized in that, described reflection tube (13) is sleeve pipe, and centre can Water cooling.
9. the using method of a kind of powder microwave heating equipment according to claim 1, it is characterized in that, powder heating steps is:
1) powder preparation: the powder (1) being crushed to < 100 microns is loaded powder material warehouse (2) for subsequent use, powder material warehouse (2) is communicated with spiral pusher device charging aperture for airtight bucket body structure bottom opening;
2) powder (1) enters spiral pusher device charging aperture from powder material warehouse (2), spiral handspike (4) rotates and powder (1) propelling movement is entered interior pipe (6) through shaping tapered sleeve (5), connect heating microwave source (11) power supply that outer tube (10) outer wall arranges, the microwave transparent inner tubal wall irradiation that heating microwave source (11) sends flows through the powder (1) of interior pipe, microwave penetration powder reflects through reflection tube, because heating microwave source (11) meets impinging microwave and microwave reflection same-phase to reflection tube outer wall distance, microwave reflection is not to impinging microwave interference offset, and due to the distance between the outer wall of reflection tube (13) and interior pipe (6) inwall close to and be not less than and heat 1/2nd of the powder depth of microwave penetration, microwave reflection is all exhaustion before penetrating powder, irradiation is not produced to microwave source, powder (1) absorbs microwave energy and is rapidly heated, powder (1) moves through in the process of interior pipe (6) irradiation temperature being subject to multiple heating microwave source (11) and constantly raises, and controls powder move through the heating cabinet time thus control powder heating-up temperature by adjustment spiral pusher device rotary speed.
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| CN105898908A (en) * | 2016-06-15 | 2016-08-24 | 成都恩承科技股份有限公司 | Microwave waveguide tube and microwave heating device |
| CN107892972A (en) * | 2017-11-23 | 2018-04-10 | 安徽理工大学 | A kind of coal microwave desulfurization equipment and method |
| CN108981366A (en) * | 2018-07-02 | 2018-12-11 | 吉林农业大学 | A kind of hot wind and microwave coupling drying equipment |
| WO2021227120A1 (en) * | 2020-05-09 | 2021-11-18 | 东北大学 | Gravity-type double-pipe microwave grinding assisting device capable of controlling thickness of ore and use method therefor |
| 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 |
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| 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 |
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