CN102226644B - High-temperature sintering push plate kiln capable of working continuously - Google Patents
High-temperature sintering push plate kiln capable of working continuously Download PDFInfo
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- CN102226644B CN102226644B CN 201110145791 CN201110145791A CN102226644B CN 102226644 B CN102226644 B CN 102226644B CN 201110145791 CN201110145791 CN 201110145791 CN 201110145791 A CN201110145791 A CN 201110145791A CN 102226644 B CN102226644 B CN 102226644B
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Abstract
The embodiment of the invention discloses a high-temperature sintering push plate kiln capable of working continuously. The kiln comprises a kiln body, a seal door, a material pushing system and an electric control system, wherein the kiln body comprises a shell and a furnace lining; the furnace lining is arranged in the inner the shell; the inner space of the furnace lining forms a hearth; the seal door is arranged on the shell; the material pushing system is arranged at the bottom part of the hearth; the electric control system is used for controlling the inner part temperature of the hearth; the shell is provided with a magnetron; and the magnetron is electrically connected with the electric control pipe. Compared with the traditional kiln, the kiln adopts microwave for sintering; when the product is subjected to microwave sintering, the inner part and outer part of the product are heated simultaneously, and zero gradient uniform heating of a large region in the material can be realized, thus the internal heat stress of the material is reduced, the cracking and deformation tendency is reduced, and the quality of the sintered product is improved. Simultaneously, because the microwaves can be absorbed directly by the material and converted into heat energy, the energy utilization ratio is extremely high, and the energy consumption in the sintering process is reduced.
Description
Technical field
The present invention relates to a kind of kiln, more particularly, relate to a kind of high temperature sintering ejection plate kiln of continuous operation.
Background technology
Industrial Stoves are industrial infrastructure devices, are again major power consumers simultaneously, and the energy consumption that therefore reduces Industrial Stoves is significant.
Traditional Industrial Stoves adopt coal, oil and gas to keep the internal temperature of kiln as the energy, but owing to adopt above-mentioned substance as the energy, the kiln temperature control accuracy is poor, fire emission is many, contaminated environment and being substituted gradually by electric furnace, particularly when firing some quality requirement high product, especially need to use electric furnace to fire, for example product such as new material, new forms of energy.Existing industrial furnace generally adopts resistance wire, Elema, Si-Mo rod, molybdenum filament, graphite etc. as heater element.During the work of above-mentioned heater element, at first whole burner hearth is carried out radiation heating, treat that the burner hearth internal temperature raises after, by heat radiation and heat conduction the product ecto-entad is heated then.Because the internal and external temperature gradient is big in the product sintering procedure, the uniformity of product is bad, is easy to generate cracking, quality problems such as insufficient burnt.In addition, heater element self-temperature height, and be subjected to the erosion of kiln atmosphere, damage easily.
Therefore, how to work out a kind of energy-saving and environmental protection, reduce sintering time, improve the kiln of firing product quality, become the technical problem that those skilled in the art need to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of high temperature sintering ejection plate kiln of continuous operation, to realize energy-saving and environmental protection, reduce sintering time, to improve the purpose of firing product quality.
For achieving the above object, the invention provides following technical scheme:
A kind of high temperature sintering ejection plate kiln of continuous operation comprises body of heater, hermatic door, material moving system and electric-control system, and wherein, described body of heater comprises housing and furnace lining, and described furnace lining is arranged on the inside of described housing, and described furnace lining inner space forms burner hearth; Described hermatic door is arranged on the described housing; Described material moving system is arranged on described burner hearth bottom; Described electric-control system is used to control the internal temperature of described burner hearth; Described housing is provided with magnetron, and described magnetron is electrically connected with described electric-control system.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, the microwave frequency range of described magnetron emission is 500～3000MHz.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, the microwave frequency of described magnetron emission is 915MHz or 2450MHz.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, described burner hearth is a tunnel-type hearth.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, the content of described furnace lining neutral and alkali metal oxide is lower than 0.5Wt%.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, Fe in the described furnace lining
2O
3Content be lower than 0.3Wt%.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, described material moving system comprises track, push pedal, push rod and push rod controller, and wherein, described track runs through described burner hearth; Described push rod is arranged on the feeding mouth place of track, and can promote to place the described push pedal on the described track to move; Described push rod controller is electrically connected with described push rod.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, described track surrounds " returning " font structure, and the corner of described track is provided with a described push rod.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, described push rod is electric pushrod, air-leg or hydraulic push rod.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, described electric-control system comprises temperature measuring device and temperature controller, described temperature controller will receive the detected temperature signal of described temperature measuring device and preset value and obtain fiducial value after relatively, and control the unlatching of described magnetron or close according to this fiducial value.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, described temperature measuring device is an occasionally infrared thermometer of thermoelectricity.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, also comprise support, described support is arranged under the described housing.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, the number of described magnetron is a plurality of.
Preferably, in the high temperature sintering ejection plate kiln of above-mentioned continuous operation, described magnetron is divided into some groups, and every group to having one or several described temperature measuring devices.
Housing in the high temperature sintering ejection plate kiln of continuous operation provided by the invention is provided with magnetron, and described magnetron is electrically connected with described electric-control system.Magnetron is launched microwave in the course of the work, and product carried out sintering, the kiln of said structure is compared with traditional kiln and is adopted microwave to carry out sintering, and microwave sintering mainly is to utilize the basic fine structure coupling of special wave band that microwave has and material and produce heat, and the dielectric loss of material makes its material monolithic be heated to sintering temperature and implementation structure densified.Because the inside and outside heating simultaneously of above-mentioned mode of heating product can realize that the zero gradient in big zone in the material evenly heats, and the material internal thermal stress is reduced, thereby reduces cracking, distortion tendency, has improved the quality of firing product.Be converted into heat energy owing to microwave energy is directly absorbed by material simultaneously,, reduced the energy consumption in the sintering procedure so capacity usage ratio is high.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The high temperature sintering ejection plate kiln structural representation of the continuous operation that Fig. 1 provides for the embodiment of the invention;
Wherein, 1 is body of heater, and 2 is magnetron, and 3 is thermocouple, and 4 is hermatic door, and 5 is push rod, and 6 is hermatic door, and 7 is push rod, and 9 is roller shelves, and 10 are push pedal, and 11 is hermatic door, and 12 is push rod, and 13 is hermatic door, and 14 is push rod, and 15 are the horizontal frame that pushes away.
The specific embodiment
Partly describe heater element when work in traditional as can be known electric furnace by background technology, at first whole burner hearth carried out radiation heating, treat that the burner hearth internal temperature raises after, by heat radiation and heat conduction the product ecto-entad is heated then.Because the internal and external temperature gradient is big in the product sintering procedure, the uniformity of product is bad, is easy to generate cracking, quality problems such as insufficient burnt.In addition, heater element self-temperature height, and be subjected to the erosion of kiln atmosphere, damage easily.
For this reason, the inventor works out a kind of kiln that adopts microwave heating, heating using microwave utilizes the basic fine structure coupling of special wave band that microwave has and material and produces heat, and the dielectric loss of material makes its material monolithic be heated to sintering temperature and realize densified method.During heating using microwave, inside and outsidely heat simultaneously, can realize that the zero gradient in the big zone of product evenly heats, the material internal thermal stress is reduced, thereby reduce cracking, distortion tendency.Owing to directly being absorbed by material, microwave energy is converted into heat energy simultaneously, so capacity usage ratio is high, than normal sintering energy-conservation about 80%.
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
As shown in Figure 1, the invention provides a kind of high temperature sintering ejection plate kiln of continuous operation, this kiln comprises body of heater 1, hermatic door, material moving system (marking among the figure) and electric-control system (marking among the figure), wherein, body of heater 1 comprises housing and furnace lining, furnace lining is arranged on the inside of housing, and the furnace lining inner space forms burner hearth; Hermatic door is arranged on the housing; The material moving system is arranged on burner hearth bottom; Electric-control system is used to control the internal temperature of burner hearth; Housing is provided with magnetron 2, and this magnetron 2 is electrically connected with electric-control system.On the body of heater support can also be set in the embodiment of the invention, this support is arranged under the housing.
Magnetron 2 is launched microwave in the course of the work, and product carried out sintering, the kiln of said structure is compared with traditional kiln and is adopted microwave to carry out sintering, and microwave sintering mainly is to utilize the basic fine structure coupling of special wave band that microwave has and material and produce heat, and the dielectric loss of material makes its material monolithic be heated to sintering temperature and implementation structure densified.Because the inside and outside heating simultaneously of above-mentioned mode of heating product can realize that the zero gradient in big zone in the material evenly heats, and the material internal thermal stress is reduced, thereby reduces cracking, distortion tendency, has improved the quality of firing product.Be converted into heat energy owing to microwave energy is directly absorbed by material simultaneously,, reduced the energy consumption in the sintering procedure so capacity usage ratio is high.
In order further to shorten the firing time, the microwave frequency range of above-mentioned magnetron 2 emissions is 500～3000MHz in the embodiment of the invention.Preferably, the microwave frequency of magnetron 2 emissions is 915MHz or 2450MHz.
Burner hearth is a tunnel-type hearth, and the housing parts of whole body of heater 1 can be made up of single housing, and perhaps a plurality of housings are connected mutually and combine, and enclosure interior is provided with furnace lining.Absorb the microwave amount in order to reduce furnace lining, the content of furnace lining neutral and alkali metal oxide is lower than 0.5Wt% in embodiments of the present invention, particularly Fe in the furnace lining
2O
3Content be lower than 0.3Wt%, the zirconium metal oxide content is lower than 0.3Wt%, by restriction furnace lining neutral and alkali metal oxide, Fe
2O
3Reduce the microwave amount that furnace lining absorbs with the content of zirconium metal oxide.
The high temperature sintering ejection plate kiln of the continuous operation in the embodiment of the invention, material in the promotion push pedal 10 enters burner hearth inside and realizes under the effect of material moving system, this material moving system comprises track, push pedal 10, push rod and push rod controller, and wherein, track runs through burner hearth; The feeding mouth place of track is provided with push rod, and can promote to place the push pedal 10 on the track to move; The push rod controller is electrically connected with push rod.
The track that is positioned at body of heater 1 inside surrounds " returning " font with the track that is positioned at body of heater 1 outside, and this track pushes away frame 15 and roller shelves 9 is formed by horizontal.For convenience, the track that is positioned at body of heater 1 inside is first track, the track that is positioned at the first track both sides is respectively second track and the 3rd track, wherein, second track is positioned at the discharging opening place of body of heater 1, the 3rd track is positioned at the charging aperture place of body of heater 1, and the track relative with first track is the 4th track.Also be provided with the horizontal frame 15 that pushes away on second track and the 3rd track, these horizontal two ends that push away frame 15 are respectively arranged with a push rod, realize push pedal 10 commutation in orbit.
In order to keep the horizontal temperature that pushes away in the frame 15, horizontal charging aperture and the discharging opening that pushes away frame 15 is provided with hermatic door, when push rod moves, and corresponding with it hermatic door action.Push rod in the material moving system can be electric pushrod, air-leg or hydraulic push rod.
Above-mentioned material moving system pusher process is specially:
Hermatic door 11 is opened, and push rod 12 advances the push pedal on the track 10 to the right, and push rod 12 retreats, and hermatic door 11 is closed;
The unlatching of hermatic door or close in the above-mentioned pusher process, push rod advances or retreats and can manually control, also can control automatically, can also carry out manual, automatic change action, when adopting control automatically, carry out control corresponding, be provided with grammed switch on all tracks by the push rod controller, be described in detail with first track, the discharging opening place of first track is provided with first grammed switch.
Concrete control procedure is:
The push rod controller receives default order, and sends open command to hermatic door 4;
The push rod controller receives above-mentioned signal, and sends the propelling instruction to push rod 5;
Push rod 5 receives the propelling instruction, and carries out the propelling action, and when push rod 5 reached body of heater 1 internal preset position, grammed switch moved, and gave the push rod controller with this signal feedback;
The push rod controller receives above-mentioned signal, and retreats instruction to push rod 5 transmissions, and when push rod 5 arrived bodies of heater 1 outside predeterminated position, grammed switch moved, and gave the push rod controller with this signal feedback;
The push rod controller receives above-mentioned signal, and sends out code to push rod 5;
Push rod 5 receives out code, and carries out closing motion.
In order to make control procedure more accurate, also be provided with alarm in the above-mentioned control procedure, when push rod 5 arrived predeterminated position, alarm was reported to the police, to remind the staff.
In embodiments of the present invention, electric-control system comprises temperature measuring device and temperature controller, and temperature controller will receive the detected temperature signal of temperature measuring device and preset value and obtain fiducial value after relatively, and according to the unlatching of this fiducial value control magnetron 2 or close.The practicable PID intelligence of the power of magnetron is regulated, and stepless continuous is adjustable.Above-mentioned temperature measuring device is thermocouple 3 or infrared thermometer.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. the high temperature sintering ejection plate kiln of a continuous operation, comprise body of heater (1), hermatic door, material moving system and electric-control system, wherein, described body of heater (1) comprises housing and furnace lining, described furnace lining is arranged on the inside of described housing, and described furnace lining inner space forms burner hearth; Described hermatic door is arranged on the described housing; Described material moving system is arranged on described burner hearth bottom; Described electric-control system is used to control the internal temperature of described burner hearth; It is characterized in that, described electric-control system comprises temperature measuring device and temperature controller, described housing is provided with a plurality of magnetrons (2), a plurality of described magnetrons (2) are divided into some groups, every group to having one or several described temperature measuring devices, described temperature controller will receive the detected temperature signal of described temperature measuring device and preset value and obtain fiducial value after relatively, and according to this fiducial value control described magnetron (2) thus transmitting power control burner hearth internal temperature; The content of described furnace lining neutral and alkali metal oxide is lower than 0.5Wt%, Fe
2O
3Content be lower than 0.3Wt%, the zirconium metal oxide content is lower than 0.3Wt%; Described material moving system comprises track, push pedal (10), push rod and push rod controller, and wherein, described track runs through described burner hearth; Described push rod is arranged on the feeding mouth place of track, and can promote to place the described push pedal (10) on the described track to move; Described push rod controller is electrically connected with described push rod.
2. the high temperature sintering ejection plate kiln of continuous operation as claimed in claim 1 is characterized in that, the microwave frequency of described magnetron (2) emission is 915MHz or 2450MHz.
3. the high temperature sintering ejection plate kiln of continuous operation as claimed in claim 1 is characterized in that, described burner hearth is a tunnel-type hearth.
4. the high temperature sintering ejection plate kiln of continuous operation as claimed in claim 1 is characterized in that, described track surrounds " returning " font structure, and the corner of described track is provided with a described push rod.
5. the high temperature sintering ejection plate kiln of continuous operation as claimed in claim 4 is characterized in that, described push rod is electric pushrod, air-leg or hydraulic push rod.
6. the high temperature sintering ejection plate kiln of continuous operation as claimed in claim 1 is characterized in that, described temperature measuring device is an occasionally infrared thermometer of thermoelectricity.
7. as the high temperature sintering ejection plate kiln of each described continuous operation of claim 1-6, it is characterized in that also comprise support, described support is arranged under the described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110145791 CN102226644B (en) | 2011-05-31 | 2011-05-31 | High-temperature sintering push plate kiln capable of working continuously |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110145791 CN102226644B (en) | 2011-05-31 | 2011-05-31 | High-temperature sintering push plate kiln capable of working continuously |
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| Publication Number | Publication Date |
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| CN102226644A CN102226644A (en) | 2011-10-26 |
| CN102226644B true CN102226644B (en) | 2013-07-24 |
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| CN 201110145791 Expired - Fee Related CN102226644B (en) | 2011-05-31 | 2011-05-31 | High-temperature sintering push plate kiln capable of working continuously |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425942B (en) * | 2011-11-08 | 2014-10-08 | 湖南顶立科技有限公司 | Microwave high temperature atmosphere pusher kiln |
| CN102435066B (en) * | 2011-11-15 | 2014-01-22 | 湖南阳东微波科技有限公司 | High temperature sintering kiln |
| CN104482741B (en) * | 2014-12-29 | 2017-01-11 | 光隆精密工业（福州）有限公司 | Automatic displacement feeding, baking and cooling device and method |
| CN109971927A (en) * | 2019-05-06 | 2019-07-05 | 天津莱葳尔精密机械有限公司 | Stress device and method is moved back in a kind of microwave heating |
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| CN101344358A (en) * | 2008-08-25 | 2009-01-14 | 淮安鼎宇科技有限公司 | Nitrogen protection full-automatic double-rail ejection plate kiln |
| CN102042749A (en) * | 2010-12-17 | 2011-05-04 | 湖南航天工业总公司 | Fully-closed industrial microwave high-temperature roller continuous sintering kiln |
| CN102062531A (en) * | 2010-12-17 | 2011-05-18 | 湖南航天工业总公司 | Fully-closed high temperature microwave sintering roller kiln |
| CN202254775U (en) * | 2011-05-31 | 2012-05-30 | 湖南阳东磁性材料有限公司 | Continuous-working high-temperature sintering push pedal kiln |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004101008A (en) * | 2002-09-06 | 2004-04-02 | Mino Ceramic Co Ltd | Electromagnetic wave continuous baking furnace and continuous baking method for baking body by use of electromagnetic wave radiation |
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2011
- 2011-05-31 CN CN 201110145791 patent/CN102226644B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| CN101344358A (en) * | 2008-08-25 | 2009-01-14 | 淮安鼎宇科技有限公司 | Nitrogen protection full-automatic double-rail ejection plate kiln |
| CN102042749A (en) * | 2010-12-17 | 2011-05-04 | 湖南航天工业总公司 | Fully-closed industrial microwave high-temperature roller continuous sintering kiln |
| CN102062531A (en) * | 2010-12-17 | 2011-05-18 | 湖南航天工业总公司 | Fully-closed high temperature microwave sintering roller kiln |
| CN202254775U (en) * | 2011-05-31 | 2012-05-30 | 湖南阳东磁性材料有限公司 | Continuous-working high-temperature sintering push pedal kiln |
Non-Patent Citations (1)
| Title |
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| JP特开2004-101008A 2004.04.02 |
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