CN207313432U - A kind of microwave heats glass ceramics crystallization system - Google Patents
A kind of microwave heats glass ceramics crystallization system Download PDFInfo
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Abstract
It the utility model is related to a kind of glass ceramics crystallization system.The main furnace body of microwave heating glass ceramics crystallization system sets warming-up section, crystallization section, temperature descending section and cooling section successively from front to back, each section of sealing docking, microwave transmission system is set respectively on main furnace body heating, crystallization, temperature descending section top, and heating, crystallization, the bottom of temperature descending section are respectively arranged with the additional hot systems of electricity；Temperature detection sensor output signal access control system is equipped with main furnace body for each section, and control system controls connection microwave transmission system, the additional hot systems of electricity and auxiliary system respectively.The utility model will heat up, crystallization, cooling and cooling procedure organically combine, easy to operate, whole crystallization process automation.Production is stablized, the service life of capital equipment is long, production efficiency is high, crystal effect is good, reduces production cost.
Description
Technical field
A kind of glass ceramics crystallization technology is the utility model is related to, is made pottery more particularly, to one kind using microwave heating to glass
Ceramic products carry out the device of crystallization.
Background technology
With the development of national economy, glass ceramics industrialized production has also obtained developing on a large scale very much.But it is in industrial equipment
With research and development aspect also the opening there are problems, especially glass ceramics crystallization technology and equipment of industrialization production technology
Hair is the difficult point and emphasis of glass ceramics industry development.
For the huge applications prospect of glass ceramics, the industrialized production of China's glass ceramics just starts to walk.Its
Basic reason is that the current research in China lays particular emphasis on laboratory research mostly, and less input energy carries out long-term substantial amounts of industrialization
Experiment and test manufacture, especially also urgently solve in terms of the research and development of industrial equipment and industrialization production technology there are problems
Certainly.Due to glass ceramics crystallization must the even running in crystallization furnace, and to ensure that heat treatment of workpieces process stabilizing carries out,
Temperature will be controlled within ± 10 DEG C in each warm area, this proposes requirements at the higher level to crystallization furnace.If using natural gas or coal gas as combustion
Material, first huge energy consumption, is second difficult to ensure that crystallization quality.
Microwave combustion method is that microwave is absorbed by material and is converted into heat by material and microwave field interactions using microwave
Can, a kind of heat treatment method heated from material internal to its entirety.Be heat-treated using microwave, with its is energy saving plus
Heat is quickly without heat stagnation and the advantages that matter interaction, therefore microwave is more and more widely used in Field of Heat-treatment.
Since microwave heating has selectivity, its advantage is material self-heating and makes its heating（Programming rate is fast, energy saving etc.）, shortcoming
It is the temperature of surrounding environment than relatively low.Therefore, heated using microwave and crystallization is carried out to glass and ceramic product, since temperature is uneven
Weighing apparatus, can cause glass and ceramic product to be burst during heating crystallization.
Utility model content
The utility model is in view of the shortcomings of the prior art, propose a kind of glass ceramics crystallization system, using microwave heating and electricity
Additional thermal carries out Crystallizing treatment to glass and ceramic product, had both ensured that crystallization process was stablized and has carried out, further through microwave heating
Non-thermal effect make it that crystallization process is more perfect, can integrate the quality for improving product.
Technical solution used by the utility model：
A kind of microwave heats glass ceramics crystallization method, including heating, crystallization, cooling and cooling procedure, in heating, crystallization
Crystallizing treatment is carried out to glass ceramic material with temperature-fall period while using microwave heating system and electricity additional hot systems, is passed through
Adjust microwave heating system each section of temperature of output power furnace body；Make material by adjusting the additional hot systems output power of electricity
The equalized temperature of temperature section corresponding with furnace body, to solve the problems, such as bursting in glass and ceramic product crystallization process.
The microwave heating glass ceramics crystallization method,
（1）In the temperature-rise period, adjusting microwave heating system output power is the 10~30% of peak power output, is made
Warming-up section temperature is warming up to 400~600 DEG C with 1~5 DEG C per minute of speed；Adjusting the additional hot systems output power of electricity makes to treat crystalline substance
It is consistent with warming-up section to change the speed that glass and ceramic product temperature rises；
（2）After the completion of temperature-rise period, treat that crystallized glass ceramic enters crystallization process, adjust microwave output power as most
The 30~100% of big output power, make crystallization section temperature be warming up to 600~800 DEG C with 2~5 DEG C per minute of speed；Adjust electricity
Additional hot systems output power makes to treat that the speed that crystallized glass ceramic temperature rises is consistent with crystallization section；And at this temperature
Insulation 20~40 minutes；
（3）In the temperature-fall period, adjust that microwave output power is peak power output 10~50%, make temperature descending section with
1~4 DEG C per minute of speed is cooled to 200~300 DEG C；Adjusting the additional hot systems output power of electricity makes crystallized glass ceramic
The speed of cooling is consistent with temperature descending section；
（4）In the cooling procedure, take air blast cooling or the natural type of cooling, treat crystallization part cooling to 100 DEG C with
Under, then come out of the stove through roller-way by microwave restraining device.
Each microwave source system of the microwave heating system includes being made of filament transformer and high-tension transformer micro-
Ripple power supply and magnetron, in magnetron initialization, provide energy by filament transformer, magnetron are preheated, delay
High pressure is applied to anode again after filament stablizes launching electronics within 30~50 seconds, open high-tension transformer and make magnetron micro-
Ripple, continues 60~90 seconds after magnetron steady operation, closes filament transformer, is produced using in magnetron microwave process
Raw heat maintains magnetron heater to keep certain temperature, continues launching electronics, using anode cavity shake caused by energy
Measure to maintain filament temperature and continue launching electronics so that magnetron continues steady operation.
Described microwave heating glass ceramics crystallization method, in heating, crystallization, cooling and cooling procedure, basis respectively
The technological requirement of glass and ceramic product sets the technological parameter of each process, then measures in each process furnace body each section by thermocouple
Fire box temperature and glass and ceramic product temperature, by A/D change be sent into PLC, PLC carry out PID arithmetic, then transported according to PID
Calculate result and electric signal in order to control is changed by D/A, magnetron high-tension transformer and the additional hot systems of electricity are controlled.
A kind of microwave heats glass ceramics crystallization system, including main furnace body, control system and auxiliary system, the main furnace body
Set warming-up section, crystallization section, temperature descending section and cooling section successively from front to back, each section of sealing docking, the heating of main furnace body, crystallization,
Temperature descending section top sets microwave transmission system respectively（1-1）, the warming-up section, crystallization section, the bottom of temperature descending section are respectively arranged with
The additional hot systems of electricity（1-2）；Each section of main furnace body is respectively provided with fire box temperature detection sensor（1-3-1）And glass and ceramic product temperature
Spend sensor（1-3-2）, the fire box temperature detection sensor and glass and ceramic product temperature sensor export signal and connect respectively
Enter control system, the control system controls connection microwave transmission system, the additional hot systems of electricity and auxiliary system respectively.
The main furnace body total length is 30~60 meters, wherein warming-up section（1-7）Length is the 20~25% of main furnace body overall length,
Crystallization section（1-8）Length is the 15~20% of main furnace body overall length, temperature descending section（1-9）Length is the 20~25% of main furnace body overall length, cold
But section（1-10）Length is the 30~35% of main furnace body overall length；Microwave transmission system（1-1）It is made of, rises 10~80 microwave sources
Temperature section（1-7）The number of microwave source is the 40~50% of microwave source sum, crystallization section（1-8）The number of microwave source is total for microwave source
Several 30~40%, temperature descending section（1-9）The number of microwave source is the 10~20% of microwave source sum；Each microwave source is included by filament
Transformer and high-tension transformer composition microwave power supply and magnetron, use output 1KW-3KW, Microwave emission frequency for
The magnetron of 2.45GHz and the microwave transmission excitation waveguide of corresponding frequencies.
In the microwave heating glass ceramics crystallization system, the additional hot systems of electricity（1-2）Using multiple by metal sealing
The electric boiling plate composition of shielding, the number of electric boiling plate is 10-40；The output power 1KW-3KW of each electric boiling plate；It is described
Warming-up section（1-7）The number of electric boiling plate is the 40~50% of electric boiling plate sum, the crystallization section（1-8）Of electric boiling plate
Number is the 30~40% of electric boiling plate sum, the temperature descending section（1-9）The number of electric boiling plate for electric boiling plate sum 10~
25%；Electric boiling plate is installed on main furnace body bottom, metallic shield overcoat is tightly connected by welding and main furnace body, for shielding
Microwave.
Auxiliary system is arranged on each section of bottom of main furnace body, is used for transmission crystallization material（1-11）, main furnace body entrance and exit
Position sets microwave restraining device（1-4）；The auxiliary system includes roller way power system（3-1）With more parallel arrangements in master
The roller-way of each section of bottom of furnace body（3-2）；Using multigroup metallic conduction pipe（3-2-1）Go deep into the two bottom sides 10 of each section of main furnace body~
20mm, and be welded in the bottom sidewall of each section of main furnace body；Metallic conduction pipe（3-2-1）Length be more than 2 times of its diameter with
On；Each roller-way is set in metallic conduction pipe（3-2-1）Each section of bottom of main furnace body is simultaneously run through in inner side, makes roller-way (3-2) can be in metal
It is freely rotated in contact tube to realize the transmission of material；The roller way power system（3-1）Including being arranged on main furnace body bottom
Motor, the shaft and roller-way of motor（3-2）End is sequentially connected.
Roller way power system（3-1）The structure of the interior roller-way for transmitting material of driving is Helical gear Transmission, is located at master
The motor of bottom of furnace body one end is connected by screw rod, which coordinates through a pusher and with Helical gear Transmission, promotes roller-way
Rotate to realize the transmission of material；Roller-way（3-2）Material be ceramic material, metallic conduction pipe（3-2-1）For stainless steel.
The control system utilizes touch-screen（2-1）To PLC（2-2）Parameters setting is carried out, A/D is carried out by PLC
PID arithmetic, then respectively controls magnetron high-tension transformer and the additional hot systems of electricity by D/A according to PID arithmetic result
System；The PLC is connected with touch-screen, control circuit respectively by data/address bus；The control circuit contains to be connected with input terminal
A certain number of manual switches, the switching signal circuit of signal acquisition circuit；Control system（2）Pre- thermal control is carried out to magnetron
System and filament cut-out control, closure and the disconnection for controlling A.C. contactor by programming output signal to PLC.
The beneficial effects of the utility model：
1st, the utility model glass ceramics crystallization method, crystallization is carried out using microwave heating and the additional heat of electricity to glass ceramics
Processing, controls each section of temperature of furnace body by adjusting microwave output power, the temperature and surrounding environment of material is made by the additional heat of electricity
Equalized temperature rise；There is no violent cooling and temperature-rise period in crystallization process, eliminate stress, avoid product and open
Split.Reach optimum efficiency by adjusting microwave power and the power of auxiliary heating at the same time, both ensure that the stabilization of crystallization process into
OK, the non-thermal effect heated further through microwave make it that crystallization process is more perfect, can integrate the quality for improving product.
2nd, the utility model glass ceramics crystallization method, will heat up, crystallization, cooling and cooling procedure are organically combined one
Rise, technique is simple and convenient to operate, and realizes the production automation of whole crystallization process.The use longevity of production stabilization, capital equipment
Life is long, production efficiency is high, crystal effect is good, reduces production cost.
3rd, the utility model glass ceramics crystallization method and device, in magnetron initialization, are carried by filament transformer
For energy, heat filament, is preheated, and applies high pressure to anode again after filament can stablize launching electronics, in electric field action
Lower filament to anode launching electronics, start to work, and after magnetron steady operation, filament transformer is cut off, to filament by magnetron
Stop power supply, using anode cavity shake caused by energy maintain filament temperature and continue launching electronics so that magnetic control
Pipe continues steady operation.While whole system stable operation is ensured, control accuracy is improved.It so can both save energy
Amount, and can reduce the caloric value of magnetron heater, avoid under filament be in cold state caused by anode application high pressure
Impact, effectively increases the service life of magnetron.Microwave source takes the mode of rotation to work at the same time, to improve making for microwave source
Use life and reliability.
4th, the utility model glass ceramics crystallization method and device, each equipment are controlled by the programming of PLC, shape
Into a complete glass（Ceramics）Crystallization production line, can arbitrarily set the work of each operation according to the technological requirement of various materials
Make program, ensure the realization of optimised process, be easy to industrializing implementation.Parameters setting is carried out to PLC using touch-screen, is passed through
The temperature that multiple thermocouples measure is changed by A/D and is sent into, and is carried out PID arithmetic by PLC, is then passed through PID arithmetic result
D/A changes electric signal in order to control, and magnetron high-tension transformer and the additional hot systems of electricity are controlled respectively, so that whole in guarantee
While a system stable operation, control accuracy is improved.
5th, the utility model glass ceramics crystallization method and device, go deep into each section of main furnace body using multigroup metallic conduction pipe
10~20mm of two bottom sides, and be welded in the bottom sidewall of each section of main furnace body；Metallic conduction pipe is mainly used to shield microwaves（Suppression
Waveguide processed）, by microwave containment in sealed furnace intracavitary, do not make microwave leakage, it is safer.
It is the schematic diagram that microwave heats glass ceramics crystallization system main furnace body to illustrate Fig. 1；
Fig. 2 is the schematic diagram that microwave heats glass ceramics crystallization system furnace structure；
Fig. 3 is the schematic diagram that microwave heats glass ceramics crystallization system control system；
Fig. 4 is the circuit diagram that microwave heats glass ceramics crystallization system magnetron and its power supply；
Fig. 5 includes Fig. 5 a, Fig. 5 b, is respectively the structure diagram and side view of the additional hot systems electric boiling plate of electricity.
In figure, 1 is main furnace body, 1-1 is microwave transmission system, 1-2 is the additional hot systems of electricity, 1-3-1 is fire box temperature inspection
Survey sensor（Main thermocouple）, 1-3-2 be glass and ceramic product temperature sensor（Aid in thermocouple）, 1-4 for microwave suppress dress
Put, 1-5 is waveguide, 1-6 is temp measuring system, 1-7 is warming-up section, 1-8 is crystallization section, 1-9 is temperature descending section, 1-10 be cooling section,
1-11 be treat crystallization product, 1-12 be product, 1-13 after the completion of crystallization be wave transparent thermal insulation material, 1-14 be flue, 1-15 is
Lightweight crystallization material；1-2-1 is electric heating tube, 1-2-2 is casting of metals shielding shell, 1-2-3 are metallic shield overcoat；3-
1 is roller way power system, 3-2 is roller-way, 3-2-1 is metallic conduction pipe.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
Embodiment 1
Referring to Fig. 1, Fig. 2, the microwave heating glass ceramics crystallization system of the present embodiment, including main furnace body 1, control system and
Auxiliary system, the main furnace body 1 set warming-up section 1-7, crystallization section 1-8, temperature descending section 1-9 and cooling section 1-10 successively from front to back,
Each section of sealing docking, sets microwave transmission system 1-1 on the heating of main furnace body, crystallization, temperature descending section top respectively, the heating,
Crystallization, the bottom of temperature descending section are respectively arranged with the additional hot systems 1-2 of electricity；Each section of main furnace body is respectively provided with fire box temperature detection sensor
1-3-1 and glass and ceramic product temperature sensor 1-3-2, the fire box temperature detection sensor and glass and ceramic product temperature
Sensor（Using thermocouple）Output signal is respectively connected to control system, and the control system controls connection Microwave emission system respectively
System 1-1, the additional hot systems 1-2 of electricity and auxiliary system.
Embodiment 2
Referring to Fig. 1, Fig. 2, the microwave of the present embodiment heats glass ceramics crystallization system, as different from Example 1：Specifically
, 1 total length of main furnace body is 30~60 meters, and wherein warming-up section 1-7 length is the 20~25% of main furnace body overall length, crystallization section 1-8 long
Spend for the 15~20% of main furnace body overall length, the length of temperature descending section 1-9 is the 20~25% of main furnace body overall length, the length of cooling section 1-10
For the 30~35% of main furnace body overall length；Microwave transmission system 1-1 is made of 10~80 microwave sources, of warming-up section 1-7 microwave sources
Number is the 40~50% of microwave source sum, and the number of crystallization section 1-8 microwave sources is the 30~40% of microwave source sum, temperature descending section 1-9
The number of microwave source is the 10~20% of microwave source sum；Each microwave source includes being made of filament transformer and high-tension transformer
Microwave power supply and magnetron, use output 1KW-3KW, Microwave emission frequency for 2.45GHz magnetron and corresponding frequencies
Microwave transmission encourages waveguide.
Embodiment 3
Referring to Fig. 1, Fig. 2, the microwave of the present embodiment heats glass ceramics crystallization system, as different from Example 2：Electricity is auxiliary
Heating system 1-2 is formed using multiple electric boiling plates by metal sealing shielding, and the number of electric boiling plate is 10-40；Each
The output power 1-3KW of electric boiling plate；The number of warming-up section 1-7 electric boiling plates is the 40~50% of electric boiling plate sum, crystallization section
The number of 1-8 electric boiling plates is the 30~40% of electric boiling plate sum, and the number of temperature descending section 1-9 electric boiling plates is total for electric boiling plate
Several 10~25%；Electric boiling plate is installed on main furnace body bottom, and metallic shield overcoat is tightly connected by welding and main furnace body,
For shield microwaves.
Embodiment 4
Referring to Fig. 1, Fig. 2, the microwave of the present embodiment heats glass ceramics crystallization system, as different from Example 2：Auxiliary
System is arranged on each section of bottom of main furnace body, is used for transmission crystallization material 1-11, and main furnace body entrance and exit position sets microwave to press down
Device 1-4 processed；The auxiliary system includes roller way power system 3-1 and Duo Gen and is arranged in parallel in the roller-way of each section of bottom of main furnace body
3-2；Go deep into 10~20mm of two bottom sides of each section of main furnace body using multigroup metallic conduction pipe 3-2-1, and it is each to be welded on main furnace body
In the bottom sidewall of section；The length of metallic conduction pipe 3-2-1 is more than more than 2 times of its diameter（Because metallic conduction pipe 3-2-1 is
Suppress waveguide, for suppressing the leakage of microwave, the longer the better, and 2 times are minimum requirements）；Each roller-way is set in metallic conduction pipe 3-
On the inside of 2-1 and run through each section of bottom of main furnace body, roller-way 3-2 is freely rotated in metallic conduction pipe to realize the biography of material
It is defeated；The roller way power system 3-1 includes the motor for being arranged on main furnace body bottom, and shaft and the roller-way 3-2 ends of motor are driven
Connection.
Embodiment 5
Referring to Fig. 1, Fig. 2, the microwave of the present embodiment heats glass ceramics crystallization system, as different from Example 4：
The structure of the interior roller-way for transmitting material of roller way power system 3-1 drivings is Helical gear Transmission, is located at main stove
The motor of body bottom end is connected by screw rod, which coordinates through a pusher and with Helical gear Transmission, promotes roller-way to turn
Move to realize the transmission of material；The material of roller-way 3-2 is ceramic material, and metallic conduction pipe 3-2-1 is stainless steel.
Purpose using metallic conduction pipe is to be mainly used to shield microwaves（Suppress waveguide）, by microwave containment in closed furnace chamber
It is interior, do not make microwave leakage.
Embodiment 6
Referring to Fig. 1, Fig. 2, the microwave heating glass ceramics crystallization system of the present embodiment, including main furnace body, control system and
Auxiliary system, main furnace body 1 include warming-up section 1-7, crystallization section 1-8, temperature descending section 1-9 and cooling section 1-10 successively from front to back, respectively
Section sealing docking；The input terminal and output terminal of main furnace body 1 are respectively arranged with track, and set microwave to press down in entrance and exit position
Device 1-4 processed；The length of main furnace body is 60 meters, and wherein the length of warming-up section 1-7 is 15 meters, and the length of crystallization section 1-8 is 10 meters,
The length of temperature descending section 1-9 is 15 meters, 20 meters of the length of cooling section 1-10.
Microwave transmission system 1-1 and thermocouple are set respectively on each section of top of main furnace body, set in each section of bottom of main furnace body
There is the additional hot systems 1-2 of electricity；The microwave transmission system is made of 60 microwave sources；Each microwave source system includes being become by filament
Depressor and high-tension transformer composition microwave power supply and magnetron, use output 1KW, Microwave emission frequency for 2.45GHz magnetic
The microwave transmission excitation waveguide of keyholed back plate and corresponding frequencies.Wherein the number of warming-up section 1-7 microwave sources is 30, crystallization section 1-8 microwaves
The number in source is 20, and the number of temperature descending section 1-9 microwave sources is 10.
The additional hot systems of electricity are formed using multiple electric boiling plates by metal sealing shielding, and electric boiling plate number is 40, often
The output power 3KW of a electric boiling plate；The number of warming-up section 1-7 electric boiling plates is 17, and the number of crystallization section 1-8 electric boiling plates is
15, the number of temperature descending section 1-9 electric boiling plates is 8, and cooling section 1-10 is without electric boiling plate.
It is provided with each section of bottom of main furnace body and is used for transmission the auxiliary system for treating crystallization material 1-11, auxiliary system includes roller
Road dynamical system 3-1 and Duo Gen parallel arrangement is in the roller-way 3-2 of each section of bottom of main furnace body；Multigroup metallic conduction pipe 3-2-1 gos deep into
10~20mm of two bottom sides of each section of main furnace body, and be welded in the bottom sidewall of each section of main furnace body；It is set to form one with furnace body
A entirety.Each roller-way is set on the inside of metallic conduction pipe 3-2-1 and runs through each section of bottom of main furnace body, enables roller-way 3-2 in metal
It is freely rotated in contact tube to realize the transmission of material；Metallic conduction pipe 3-2-1 is stainless steel, a diameter of 70mm, length
For 150mm, go deep into 15mm in furnace body；Shield microwaves are mainly used to using metallic conduction pipe（Suppress waveguide）, microwave containment is existed
Sealed furnace intracavitary, does not make microwave leakage.Roller way power system 3-1 includes being arranged on the motor of main furnace body bottom, machine shaft with
Roller-way 3-2 ends are sequentially connected.The material of roller-way 3-2 is ceramic material, its a diameter of 50mm.Roller way power system 3-1 drives
The structure of the interior roller-way for transmitting material be Helical gear Transmission, the motor for being located at main furnace body bottom end passes through screw rod phase
Connection, the screw rod coordinate through a pusher and with Helical gear Transmission, promote roller bed rotation to realize the transmission of material.
Fig. 4 heats glass for microwave（Ceramics）The circuit diagram of crystallization system magnetron and its power supply, wherein：B1 becomes for filament
Depressor, B2 are high-tension transformer, G is that magnetron, J1 and J2 are relay；Controlled by PLC（J1）With（J2）Closure, just
It can realize the power supply for being preheated and being stopped to magnetron to magnetron heater.Magnetron is by cathode filament, anode, coupling
Ring, annular magnetic steel and probe antenna etc. form.Cathode and anode composition concentric cylinder structure type, cathode are in
Center, its flow of emitted electrons, for anode then around cathode, anode is the resonator system being made of many small resonators.Magnetic control spot
Silk general work voltage is exchange 3.3V, electric current 10A or so, and anode is direct current 4000V or so to cathode voltage, and magnetron is powered
When filament be heated, while high voltage electric field is formed between filament and anode, filament is to anode launching electronics, sun under electric field action
Pole receives electronics and produces anode current.Electronics shakes when reaching each anode cavity according to its resonant frequency, at the same time
Because the stationary magnetic field that annular magnetic steel produces is perpendicular to high voltage electric field direction, under the action of the magnetic field, electronics is along filament and sun
The circuferential spacing of interpolar makees escapement curvilinear motion and forms a rotating electron cloud to gather strength, and energy is constantly conveyed to anode,
The microwave concussion energy of stable 2.45GHz is obtained with anode.
The filament transformer B1 in magnetron is first opened, magnetron is preheated；Delay opens high voltage variable after 10-20 seconds
Depressor simultaneously makes magnetron microwave；Then filament transformer is closed after postponing 30~50 seconds again, using micro- in magnetron
The heat produced in wave process maintains magnetron heater to keep certain temperature, continues launching electronics.
Therefore, in magnetron initialization, energy is provided by filament transformer, heat filament, is preheated, and treats filament
High pressure is applied to anode again after the launching electronics that can stablize, filament is opened to anode launching electronics, magnetron under electric field action
Beginning work, avoids in the impact caused by anode applies high pressure under filament is in cold state, effectively raises magnetron
Service life.
After magnetron steady operation, filament transformer is cut off, is stopped power supply to filament, shake institute using anode cavity
The energy of generation maintains the temperature of filament and continues launching electronics so that magnetron continues steady operation.Thus both can be with
Energy is saved, and the caloric value of magnetron heater can be reduced, further increases the service life of magnetron.
Fig. 5 a, Fig. 5 b heat glass for microwave in Fig. 5（Ceramics）The additional hot systems electric boiling plate structure of crystallization system electricity
Schematic diagram and side view；Wherein：1-2-1 is electric heating tube, 1-2-2 be by shielding shell, the 1-2-3 of casting of metals be metal screen
Cover overcoat.Heating plate is installed on the bottom of main furnace body, by metallic shield overcoat with being tightly connected by welding and main furnace body, is used for
Shield microwaves.
Control system carries out PLC 2-2 parameters setting using touch-screen 2-1, and A/D carries out PID arithmetic by PLC,
Then magnetron high-tension transformer and the additional hot systems of electricity are controlled respectively by D/A according to PID arithmetic result.Controlling
In circuit 2-3, PLC is connected with touch-screen, control circuit respectively by data/address bus；The control circuit contains and input terminal phase
A certain number of manual switches even, the switching signal circuit of signal acquisition circuit.
Fig. 3 systematic schematic diagrams in order to control.Control system carries out magnetron warm-up control and filament cut-out control, by right
The closure of PLC programming output signal control A.C. contactors and disconnection, first open the filament transformer in magnetron, to magnetron
Preheated；Delay opens high-tension transformer after 15 seconds and makes magnetron microwave；Then filament is closed after postponing 30 seconds again
Transformer, maintains magnetron heater to keep certain temperature, after supervention using the heat produced in magnetron microwave process
Radio.
Claims (6)
1. a kind of microwave heats glass ceramics crystallization system, including main furnace body, control system and auxiliary system, the main furnace body is certainly
Warming-up section, crystallization section, temperature descending section and cooling section are set after forward direction successively, each section of sealing is docked, it is characterized in that：In the liter of main furnace body
Temperature, crystallization, temperature descending section top set microwave transmission system respectively（1-1）, the warming-up section, crystallization section, the bottom point of temperature descending section
The additional hot systems of electricity are not provided with（1-2）；Each section of main furnace body is respectively provided with fire box temperature detection sensor（1-3-1）And glass pottery
Ceramic products temperature sensor（1-3-2）, the fire box temperature detection sensor and glass and ceramic product temperature sensor difference are defeated
Go out signal access control system, the control system controls connection microwave transmission system, the additional hot systems of electricity and auxiliary respectively
System.
2. microwave according to claim 1 heats glass ceramics crystallization system, it is characterized in that：The main furnace body total length is
30~60 meters, wherein warming-up section（1-7）Length is the 20~25% of main furnace body overall length, crystallization section（1-8）Length is main furnace body overall length
15~20%, temperature descending section（1-9）Length is the 20~25% of main furnace body overall length, cooling section（1-10）Length is main furnace body overall length
30~35%；Microwave transmission system（1-1）It is made of 10~80 microwave sources, warming-up section（1-7）The number of microwave source is microwave source
The 40~50% of sum, crystallization section（1-8）The number of microwave source is the 30~40% of microwave source sum, temperature descending section（1-9）Microwave source
Number for microwave source sum 10~20%；Each microwave source includes the microwave being made of filament transformer and high-tension transformer
Power supply and magnetron, use output 1KW-3KW, Microwave emission frequency to be passed for the magnetron of 2.45GHz and the microwave of corresponding frequencies
Defeated excitation waveguide.
3. microwave according to claim 1 or 2 heats glass ceramics crystallization system, it is characterized in that：The additional hot systems of electricity（1-
2）Formed using multiple electric boiling plates by metal sealing shielding, the number of electric boiling plate is 10-40；Each electric boiling plate
Output power 1KW-3KW；The warming-up section（1-7）The number of electric boiling plate is the 40~50% of electric boiling plate sum, the crystallization
Section（1-8）The number of electric boiling plate is the 30~40% of electric boiling plate sum, the temperature descending section（1-9）The number of electric boiling plate is
The 10~25% of electric boiling plate sum；Electric boiling plate is installed on main furnace body bottom, and metallic shield overcoat is passed through welding and main furnace body
It is tightly connected, for shield microwaves.
4. microwave according to claim 3 heats glass ceramics crystallization system, it is characterized in that：Auxiliary system is arranged on main stove
Each section of bottom of body, is used for transmission crystallization material（1-11）, main furnace body entrance and exit position sets microwave restraining device（1-4）；
The auxiliary system includes roller way power system（3-1）With more parallel arrangements in the roller-way of each section of bottom of main furnace body（3-2）；Adopt
With multigroup metallic conduction pipe（3-2-1）Go deep into 10~20mm of two bottom sides of each section of main furnace body, and be welded on each section of main furnace body
In bottom sidewall；Metallic conduction pipe（3-2-1）Length be more than more than 2 times of its diameter；Each roller-way is set in metallic conduction pipe
（3-2-1）Each section of bottom of main furnace body is simultaneously run through in inner side, roller-way (3-2) is freely rotated in metallic conduction pipe to realize material
Transmission；The roller way power system（3-1）Motor including being arranged on main furnace body bottom, the shaft and roller-way of motor（3-2）
End is sequentially connected.
5. microwave according to claim 4 heats glass ceramics crystallization system, it is characterized in that：Roller way power system（3-1）
The structure of the interior roller-way for transmitting material of driving is Helical gear Transmission, and the motor for being located at main furnace body bottom end passes through screw rod
It is connected, which coordinates through a pusher and with Helical gear Transmission, promotes roller bed rotation to realize the transmission of material；Roller-way
（3-2）Material be ceramic material, metallic conduction pipe（3-2-1）For stainless steel.
6. microwave according to claim 3 heats glass ceramics crystallization system, it is characterized in that：The control system, which utilizes, to be touched
Touch screen（2-1）To PLC（2-2）Parameters setting is carried out, A/D carries out PID arithmetic by PLC, then according to PID arithmetic
As a result magnetron high-tension transformer and the additional hot systems of electricity are controlled respectively by D/A；The PLC passes through data/address bus point
It is not connected with touch-screen, control circuit；The control circuit contains a certain number of manual switches being connected with input terminal, signal
The switching signal circuit of Acquisition Circuit；Control system（2）Warm-up control and filament cut-out control are carried out to magnetron, by right
The closure of PLC programming output signal control A.C. contactors and disconnection.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107434358A (en) * | 2017-09-15 | 2017-12-05 | 内蒙古科技大学 | A kind of microwave heating glass ceramics crystallization method and device |
| CN109654898A (en) * | 2018-12-19 | 2019-04-19 | 天津滨海通达动力科技有限公司 | A kind of heating furnace temperature control system and method |
| CN110743896A (en) * | 2019-10-17 | 2020-02-04 | 南京工程学院 | Improved compact waste heat-microwave high-temperature hydrothermal uninterrupted operation device and method |
| WO2020147209A1 (en) * | 2019-01-17 | 2020-07-23 | 内蒙古科技大学 | Device and method for achieving crystallization of glass ceramic by means of microwave-electric hybrid heating |
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- 2017-09-15 CN CN201721184781.XU patent/CN207313432U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107434358A (en) * | 2017-09-15 | 2017-12-05 | 内蒙古科技大学 | A kind of microwave heating glass ceramics crystallization method and device |
| CN109654898A (en) * | 2018-12-19 | 2019-04-19 | 天津滨海通达动力科技有限公司 | A kind of heating furnace temperature control system and method |
| WO2020147209A1 (en) * | 2019-01-17 | 2020-07-23 | 内蒙古科技大学 | Device and method for achieving crystallization of glass ceramic by means of microwave-electric hybrid heating |
| CN110743896A (en) * | 2019-10-17 | 2020-02-04 | 南京工程学院 | Improved compact waste heat-microwave high-temperature hydrothermal uninterrupted operation device and method |
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