CN114100787B - Laboratory drum-type microwave high temperature calcination ball mill - Google Patents
Laboratory drum-type microwave high temperature calcination ball mill Download PDFInfo
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- CN114100787B CN114100787B CN202111391781.8A CN202111391781A CN114100787B CN 114100787 B CN114100787 B CN 114100787B CN 202111391781 A CN202111391781 A CN 202111391781A CN 114100787 B CN114100787 B CN 114100787B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1805—Monitoring devices for tumbling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1815—Cooling or heating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/04—Safety devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
The invention provides a laboratory drum-type microwave high-temperature roasting ball mill which comprises a microwave energy feeding device, a microwave cavity, an integral heat insulation structure, a temperature measuring device, a driving transmission device, a control system and a ball milling system, wherein the microwave energy feeding device is arranged on the outer wall of the microwave cavity, the microwave energy feeding device is connected with the control system, the integral heat insulation structure is arranged in the microwave cavity, the ball milling system is arranged in an inner cavity of the integral heat insulation structure, the ball milling system comprises a ball milling barrel and grinding balls, the ball milling barrel is provided with a high-temperature pressure relief mechanism, the ball milling barrel is made of a wave-transparent light-transmitting material, the grinding balls are arranged in the inner cavity of the ball milling barrel, the driving transmission device penetrates through the microwave cavity, and the ball milling barrel is movably connected with the driving transmission device. The invention has simple operation, low processing difficulty, stable and reliable temperature measurement, real-time controllable heating process, synchronous microwave high-temperature roasting and ball milling, safety and reliability and low microwave leakage value.
Description
Technical Field
The invention relates to a laboratory drum-type microwave high-temperature roasting ball mill, belonging to the technical fields of metallurgical engineering technology, mineral processing technology and powder material preparation.
Background
In the experiments of metallurgy, mineral processing and sample analysis, the mineral processing usually requires high-temperature roasting and ball milling crushing, and the roasting temperature is generally between 480 ℃ and 1200 ℃. However, the conventional roasting and grinding processes are all performed in a segmented manner, so that the time consumption is long, the efficiency is low, and the crushing effect on part of samples is poor.
In recent years, microwave heating has been commonly used for mineral-assisted high temperature roasting. Microwave heating, the heated material directly absorbs microwave energy, heat conduction is not needed, and the heating speed is high. Meanwhile, for substances with different chemical components, microwaves have the characteristic of selective heating, and for high-temperature roasting of minerals, the chemical components of all parts are not uniformly distributed, and the absorption efficiency of the microwaves by different chemical components is greatly different. Therefore, under the combined action of microwave rapid heating and selective heating, each part of the roasted mineral has larger temperature difference, thereby generating great thermal stress to generate cracks, and being more beneficial to generating damage to the mineral structure.
Meanwhile, in the production and use of microwave equipment, the safety problem of microwave leakage protection is always an important index. The international electrotechnical commission and related departments in China also impose the regulation that the microwave leakage value does not exceed 5mw/cm < 2 >. If a human body receives excessive microwave radiation, the problems of dizziness, sleep disorder, memory deterioration, slow skipping and the like can be caused, and meanwhile, the wireless communication of the surrounding environment can be influenced due to microwave leakage.
At present, the microwave high-temperature roasting ball-milling technology at home and abroad is rarely researched, and in the prior art, the problems that an instrument cannot accurately control a material heating process due to inaccurate temperature measurement, the instrument has a burning loss risk, the instrument is complex to operate, the processing precision requirement is high, the processing difficulty is large and the like exist. Patent 202010318445.x, when the material loading is less than 1/2 of the grinding chamber volume, all the materials are below the central axis of the grinding chamber, and all the materials are not in the light path transmission path of infrared measurement, so that the infrared thermometer cannot measure the material temperature in the grinding chamber; when the material loading is more than or equal to 1/2 of the volume of the grinding chamber, due to the rotation, the material is filled into a light path transmission pipeline for infrared measurement to block a temperature measurement channel, so that the temperature of the material in the grinding chamber cannot be detected by an infrared thermometer, the temperature of the material in the infrared thermometer cannot be accurately measured, the material heating process cannot be accurately controlled, and meanwhile, the instrument has the risk of burning loss; meanwhile, the material loading, unloading and fixing modes have high operation difficulty and high failure rate in use under the high-temperature condition; the microwave absorbing heating tube is arranged, a conventional heating source is additionally arranged, a large amount of microwaves are consumed, and the treatment effect of the minerals caused by absorbing the microwaves and rapidly heating and roasting the minerals is weakened; the transmission mode, the material loading and unloading mode, the heat preservation method and the structure and the fixing method of the grinding cylinder are complex, the requirement on the coaxiality is high, the requirement on the machining precision of equipment is high, the machining difficulty is high, and the manufacturing cost is high.
Therefore, a novel microwave device which is simple and convenient to operate, reliable in temperature measurement and controllable in heating process and can realize synchronous microwave high-temperature roasting and ball milling is developed, and the novel microwave device has innovative significance for development of microwave devices and development of high-temperature roasting and ball milling processes of minerals.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the laboratory drum type microwave high-temperature roasting ball mill which is simple and convenient to operate, reliable in temperature measurement and controllable in heating process.
In order to solve the technical problems, the invention provides a laboratory drum type microwave high-temperature roasting ball mill which comprises a microwave energy feedback device, a microwave cavity, an integral heat insulation structure, a temperature measuring device, a driving transmission device, a control system and a ball milling system, wherein the microwave energy feedback device is arranged on the outer wall of the microwave cavity and is connected with the control system, a door lock system with a furnace door microwave suppressor is arranged on the side wall of the microwave cavity, the integral heat insulation structure is arranged inside the microwave cavity, the ball milling system is arranged in an inner cavity of the integral heat insulation structure and comprises a ball milling cylinder and a grinding ball, the ball milling cylinder is provided with a high-temperature pressure relief mechanism, the ball milling cylinder is made of a wave-transparent material, the grinding ball is arranged in the inner cavity of the ball milling cylinder, the driving transmission device penetrates through the microwave cavity, the ball milling cylinder is movably connected with the driving transmission device, the temperature measuring device comprises an infrared thermometer and a wave suppression tube, an infrared detection hole is arranged at the central position of the upper wall of the microwave cavity, a hole of the integral heat insulation structure is provided with a hole, a wave suppression tube is arranged at a position corresponding to the position of the infrared detection hole, the infrared detection tube is connected with the infrared thermometer and the control system, and the ball milling cylinder is used for detecting the temperature of the material or the ball milling cylinder.
Preferably, the high-temperature pressure relief mechanism comprises a ball milling barrel cover and a high-temperature ventilating sand core or a microporous ceramic plate welded in the middle of the ball milling barrel cover, and the ball milling barrel cover is in threaded connection or clamping connection with the ball milling barrel body.
Preferably, high temperature pressure release mechanism includes ball-milling cover, diaphragm stopper and high temperature ventilative diaphragm, and ball-milling cover and ball-milling barrel threaded connection or clamping connection, diaphragm stopper and ball-milling cover threaded connection or clamping connection, high temperature ventilative diaphragm set up in the bottom of diaphragm stopper, and the diaphragm stopper is provided with diaphragm stopper exhaust pressure release hole, and ball-milling cover is provided with ball-milling cover exhaust pressure release hole, and diaphragm stopper exhaust pressure release hole, ball-milling cover exhaust pressure release hole and high temperature ventilative diaphragm mutually support and form exhaust pressure release passageway.
Preferably, the driving transmission device comprises a driving motor, a transmission device and two high-temperature-resistant rolling shafts with limiting devices, the driving motor and the transmission device are installed outside the microwave cavity, the driving motor is connected with the control system, the two rolling shafts are symmetrically arranged below an inner cavity of the integral heat-insulating structure, one ends of the two rolling shafts penetrate through the integral heat-insulating structure and the side wall, not provided with the door lock system, of the microwave cavity and are fixed on the supporting seat through the rolling bearings, the two rolling shafts are connected with the driving motor through the transmission device after penetrating through the integral heat-insulating structure and the side wall, not provided with the door lock system, of the microwave cavity respectively, the other ends of the two rolling shafts penetrate through the integral heat-insulating structure and the side wall, not provided with the door lock system, of the microwave cavity and the joint of the end parts of the two rolling shafts and the microwave cavity side wall are provided with microwave suppressors respectively, and the ball grinding cylinder is placed on the two rolling shafts through the limiting devices.
Preferably, the integral insulation structure is provided with an insulation door close to a side wall of the door lock system.
Preferably, the temperature measuring device further comprises a thermocouple, the thermocouple is fixedly installed on the side wall of the microwave cavity and penetrates through the side wall of the microwave cavity and the integral heat insulation structure, the temperature measuring end of the thermocouple extends to the inner cavity of the integral heat insulation structure, the thermocouple is connected with the control system, and the thermocouple measures the temperature of the inner cavity of the integral heat insulation structure.
Preferably, the material of the ball milling cylinder is glass or quartz glass or transparent ceramic
Preferably, the material of the high-temperature breathable membrane is glass fiber cloth or quartz fiber cloth or glass fiber cotton or alumina cotton or quartz cotton or mullite fiber cotton.
Preferably, the roller is made of glass, quartz glass or ceramic.
Preferably, the material of the grinding ball is non-metal.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention realizes the synchronous performance of microwave high-temperature roasting and ball milling:
the invention effectively prevents heat loss by arranging the integral heat insulation structure, and the microwave cavity can not be deformed due to heating when the material temperature in the inner cavity of the ball grinding cylinder is raised to be more than 1200 ℃;
the high-temperature pressure relief mechanism is arranged, so that the function of timely and smoothly discharging gas in the inner cavity of the ball grinding cylinder body while intercepting materials is realized, and the explosion risk caused by the rapid rise of the air temperature and the air pressure in the inner cavity of the ball grinding cylinder is eliminated;
according to the invention, the temperature of the material in the inner cavity of the ball mill cylinder is directly measured by the infrared thermometer and fed back to the control system, and the control system adjusts the microwave heating power according to the temperature measured by the infrared thermometer, so that the temperature of the material in the inner cavity of the ball mill cylinder is effectively controlled, and the accurate and controllable heating process is realized;
according to the invention, the thermocouple is arranged to measure the temperature of the inner cavity of the integral heat-insulating structure, the control system compares the temperature measured by the thermocouple with the temperature measured by the infrared thermometer in real time, the operation of the equipment is protected, and the risk of over-temperature burning loss of the equipment caused by continuous microwave heating due to inaccurate temperature measurement of the infrared thermometer is effectively eliminated.
2. According to the microwave oven, the microwave leakage inhibition design is carried out at the interface of the oven door, the rolling shaft and the side wall of the microwave cavity and the position of the infrared detection hole, so that the microwave leakage is prevented, the microwave leakage value is far lower than the standard required value, and the personal safety of operators and the safety of the operating environment are effectively guaranteed.
3. The invention has simple processing technology and simple and convenient operation, effectively reduces the processing difficulty and the manufacturing cost.
Drawings
FIG. 1 is a top cross-sectional view of the present invention.
Fig. 2 is a side cross-sectional view of the present invention.
Fig. 3 is a cross-sectional view of a ball milling cartridge according to the present invention.
Reference numerals are as follows: the microwave energy-feedback device comprises a microwave cavity 1, a microwave energy-feedback device 2, a furnace door microwave suppressor 3, a furnace door 4, a door lock 5, a ball milling cylinder 6, a rolling shaft 7, an infrared thermometer 8, a wave suppression tube 9, a thermocouple 10, a driving motor 11, a transmission device 12, a supporting seat 13, a microwave suppressor 14, a limiting device 15, a control system 16, an integral heat insulation structure 17, a heat insulation door 18, a ball milling cylinder body 61, a ball milling cylinder cover 62, a high-temperature ventilation diaphragm 63, a diaphragm plug 64, a ball milling cylinder cover exhaust pressure relief hole 65 and a diaphragm plug exhaust pressure relief hole 66.
Detailed Description
The present invention will be described in detail below with reference to examples and the accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1 to 3, a laboratory roller type microwave high temperature roasting ball mill comprises a microwave energy feedback device 2, a microwave cavity 1, an integral heat preservation structure 17, a temperature measuring device, a driving transmission device, a control system 16 and a ball milling system, wherein the microwave energy feedback device 2 is arranged on the outer wall of the microwave cavity 1, the microwave energy feedback device 2 is connected with the control system 16, the side wall of the microwave cavity 1 is provided with a door lock system with a door microwave suppressor 3, the integral heat preservation structure 17 is arranged inside the microwave cavity 1, the ball milling system is arranged in the inner cavity of the integral heat preservation structure, the ball milling system comprises a ball milling cylinder 6 and grinding balls, the ball milling cylinder 6 is provided with a high temperature pressure relief mechanism, the ball milling cylinder 6 is made of wave-transparent material, the grinding balls are arranged in the inner cavity of the ball milling cylinder 6, the driving transmission device penetrates through the microwave cavity, the ball milling cylinder is movably connected with the driving transmission device, preferably, the driving transmission device comprises a rolling shaft driving motor 11, a transmission device 12 and two high temperature resistant rollers 7 with a limiting device 15, the driving motor 11 and two rolling shafts 7, the rolling shaft driving device 12 are arranged outside the microwave cavity 1, the driving motor 11 and the rolling shaft 12 are respectively, the rolling bearing 7 is arranged on the inner cavity, the two rolling shaft rolling bearing 12, the rolling bearing structure is arranged on the inner cavity, the rolling bearing structure, the rolling shaft 17, the rolling bearing is symmetrically arranged on the two rolling bearing structure, the two rolling shaft 17, the two rolling bearing structure, the rolling bearing 14 is arranged on the side wall of the rolling bearing structure, the rolling shaft 17, the rolling bearing structure is arranged below the rolling bearing 17, the rolling bearing structure, the rolling bearing 17, the rolling shaft 17, the rolling bearing 14 is arranged on the rolling bearing structure, the rolling bearing structure is arranged below the rolling bearing 17, the ball grinding cylinder 6 is placed on the two rolling shafts 7 through the limiting device 15, the full heat insulation design of the integral heat insulation structure 17 guarantees high-temperature roasting of the ball grinding cylinder, heat loss is effectively prevented, when the temperature of materials in the inner cavity of the ball grinding cylinder 6 rises to above 1200 ℃, the ball grinding cylinder cannot deform due to heating, the temperature measurement device comprises an infrared thermometer 8 and a wave suppression pipe 9, an infrared detection hole is formed in the center of the upper wall of the microwave cavity 1, a hole is formed in the position, corresponding to the position of the infrared detection hole, of the integral heat insulation structure 17, the wave suppression pipe 9 is arranged in the position of the infrared detection hole, the infrared thermometer 8 is connected with the control system 16, the infrared thermometer 8 penetrates through the ball grinding cylinder 61 through the infrared detection hole, the temperature of the materials or grinding balls in the inner cavity of the ball grinding cylinder 6 is detected, the measured temperature information is fed back to the control system 16, the control system 16 compares the measured temperature information with the set heating process temperature, and then controls the microwave power of the microwave energy feedback device 2, and therefore control of the rapid and accurate heating process is achieved, and control of the ball grinding process is guaranteed.
Preferably, the control system 16 includes a controller and a human-machine interface.
Optionally, the high-temperature pressure relief mechanism comprises a ball milling barrel cover 62 and a high-temperature air-permeable sand core or a microporous ceramic plate welded in the middle of the ball milling barrel cover 62, the ball milling barrel cover 62 and the ball milling barrel body 61 are in threaded connection or clamping connection, and in the high-temperature heating process, the high-temperature air-permeable sand core or the microporous ceramic plate effectively discharges gas while retaining materials, so that the risk of explosion of the ball mill is avoided.
Preferably, the high-temperature pressure relief mechanism comprises a ball milling cylinder cover 62, a diaphragm plug 64 and a high-temperature breathable diaphragm 63, the ball milling cylinder cover 62 is in threaded connection or clamping connection with the ball milling cylinder body 61, the diaphragm plug 64 is in threaded connection or clamping connection with the ball milling cylinder cover 62, the high-temperature breathable diaphragm 63 is arranged at the bottom of the diaphragm plug 64, the diaphragm plug 64 is provided with a diaphragm plug exhaust pressure relief hole 66, the ball milling cylinder cover 62 is provided with a ball milling cylinder cover exhaust pressure relief hole 65, the diaphragm plug exhaust pressure relief hole 66, the ball milling cylinder cover exhaust pressure relief hole 66 and the high-temperature breathable diaphragm 63 are mutually matched to form an exhaust pressure relief channel, and in the high-temperature heating process, the exhaust pressure relief channel effectively exhausts gas while intercepting materials, and the risk of explosion of the ball mill is avoided.
Preferably, the integral heat insulation structure 17 is provided with a heat insulation door 18 close to the side wall of the door lock system, so that loading and unloading operations are facilitated.
Preferably, the temperature measuring device further comprises a thermocouple 10, the thermocouple 10 is fixedly installed on the side wall of the microwave cavity 1 and penetrates through the side wall of the microwave cavity 1 and the integral heat insulation structure 17, the temperature measuring end of the thermocouple 10 extends to the inner cavity of the integral heat insulation structure 17, the thermocouple 10 is connected with the control system 16, and the thermocouple 10 measures the temperature of the inner cavity of the integral heat insulation structure 17.
The control system 16 compares the temperature measured by the thermocouple 10 with the temperature measured by the infrared thermometer 8 in real time, when the temperature of the infrared thermometer 8 is not measured accurately due to the pollution of a lens or the blockage and interference of a temperature measuring channel of the infrared thermometer 8, the temperature measured by the thermocouple 10 is higher than the temperature measured by the infrared thermometer 8, the temperature measured by the infrared thermometer 8 is determined to be inaccurate, the control system 16 controls the microwave heating to stop and gives an alarm to prompt the detection of the infrared thermometer 8, and therefore the risk that the ball mill is burnt due to the ultrahigh microwave heating is avoided.
Preferably, the door lock system comprises an oven door 4 arranged on the side wall of the microwave cavity 1, a door lock 5 arranged on the oven door 4, an oven door microwave suppressor 3 arranged at the opposite position of the installation position of the side wall of the microwave cavity 1 and the oven door 4, an oven door and a heat preservation door, so that the loading and unloading are convenient and reliable, and the oven door microwave suppressor 3 is arranged to effectively prevent the microwave from leaking.
Preferably, the material of the ball milling cylinder 6 is glass, quartz glass or transparent ceramic, the ball milling cylinder 6 can transmit wave and light, and the material or the milling balls in the ball milling cylinder can rapidly absorb microwave and further convert the microwave into heat energy.
Preferably, the material of the high-temperature gas-permeable membrane 63 is glass fiber cloth or quartz fiber cloth or glass fiber cotton or alumina cotton or quartz cotton or mullite fiber cotton, which is beneficial to discharge of gas.
Preferably, in order to improve the uniformity of the microwave field intensity in the inner cavity of the ball milling cylinder 6, the microwave energy feeding devices 2 are multiple, the microwave energy feeding devices 2 are symmetrically distributed on the side wall and the bottom of the microwave cavity 1, and the microwave cavity 1 is made of metal, so that the leakage of microwaves is effectively avoided.
When the wave absorbing capacity of the material in the inner cavity of the ball grinding cylinder 6 is strong, the grinding balls can be selected from grinding balls made of non-metal materials, and when the wave absorbing capacity of the material in the inner cavity of the ball grinding cylinder 6 is poor, the grinding balls are preferably grinding balls made of materials such as silicon carbide, silicon nitride or zirconium oxide and the like and capable of absorbing microwaves.
The operation process comprises the following steps:
1. an operator loads mineral materials to be processed and grinding balls into the ball grinding cylinder 6, screws a ball grinding cylinder cover 62 provided with a high-temperature ventilating diaphragm 63, opens the furnace 4 and the heat preservation door 18, places the ball grinding cylinder 6 on the two rolling shafts 7, prevents the ball grinding cylinder 6 from deviating through the limiting device 15, covers the heat preservation door 18 and screws the furnace door 4.
2. And starting an external power supply, setting the required heating parameters and rolling speed through a human-computer interface, and starting the microwave energy feedback device 2 and the driving motor 11.
3. Microwave is fed into the microwave energy feeding device 2, the microwave penetrates through the heat insulation layer, and directly acts on materials and grinding balls in the ball grinding cylinder 6 after passing through the ball grinding cylinder 6, the materials and the grinding balls directly absorb microwave energy to heat up, meanwhile, the control system 16 controls the rotating speed of the driving motor 11 according to the set rotating speed, the driving motor 11 drives the rolling shaft 7 to move through the transmission device 12, the rolling shaft 7 drives the ball grinding cylinder 6 to move, and the materials are subjected to ball milling during microwave high-temperature roasting.
4. When the material is subjected to microwave high-temperature roasting ball milling, the infrared thermometer 8 penetrates through the transparent ball milling barrel body 61, the temperature of the material and the temperature of the milling balls are directly measured, temperature information is fed back to the control system 16, the control system 16 compares the set heating process temperature, the required microwave power is calculated and transmitted to the microwave energy feedback device 2, so that the control of the heating process is quickly and accurately realized, the thermocouple 19 measures the temperature of the inner cavity of the integral heat insulation structure and feeds the measured temperature back to the control system 16, the control system 16 compares the temperature measured by the infrared thermometer 8 and the temperature measured by the thermocouple 19 in real time, and if the temperature of the infrared thermometer 8 is inaccurate, the control system 16 controls the microwave energy feedback device 2 to stop heating and gives an alarm of the fault of the infrared thermometer 3.
5. When the materials are roasted and ball-milled at high temperature by microwave, the high-temperature pressure relief mechanism can hold back the materials and simultaneously discharge the gas in the inner cavity of the ball milling cylinder body smoothly and timely.
6. When the microwave high-temperature roasting and ball milling of the material are completed, the control system 16 controls the microwave energy feedback device 2 to stop feeding microwaves, the control system 16 controls the driving motor 11 to stop rotating, the control system 16 controls the infrared thermometer 8 and the thermocouple 19 to stop measuring the temperature, and the material is cooled in the ball mill.
7. When the materials are cooled to the temperature at which the materials can be taken out, the control system 16 gives out sound and light alarm to prompt that the materials can be taken out, an operator opens the furnace door 4 and the heat preservation door 18 to take out the ball grinding cylinder 6, opens the ball grinding cylinder cover 62 of the ball grinding cylinder 6 and takes out the materials in the inner cavity of the ball grinding cylinder 6.
The foregoing is a further detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended to limit the invention to the specific embodiments thereof. For those skilled in the art to which the invention pertains, several simple deductions and substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (8)
1. The utility model provides a laboratory drum-type microwave high temperature roasting ball mill, its characterized in that includes microwave and presents can device (2), microwave cavity (1), whole insulation construction (17), temperature measuring device, drive transmission, control system (16) and ball-milling system, microwave is presented can device (2) and is installed at the outer wall of microwave cavity (1), and microwave is presented can device (2) and is connected with control system (16), and microwave cavity (1) lateral wall sets up the lock system who has furnace gate microwave inhibitor (3), whole insulation construction (17) set up in the inside of microwave cavity (1), and the ball-milling system sets up the inner chamber at whole insulation construction, ball-milling system includes ball mill section of thick bamboo (6) and grinding ball, and ball mill section of thick bamboo (6) are provided with high temperature pressure release mechanism, and the material of ball mill section of thick bamboo (6) is wave-transparent material, and grinding ball place in the inner chamber of ball mill section of thick bamboo (6), drive transmission wears the microwave cavity, ball mill section of thick bamboo and drive transmission device swing joint, temperature measuring device includes infrared thermometer (8) and infrared probe hole (9), and infrared probe position (17), and infrared probe hole position (8) are provided with infrared probe structure (17), and infrared probe hole (8) through infrared detection position, infrared detection position (8) on the microwave detection device, and infrared detection position control system, and infrared detection device are provided with infrared detection device, and infrared detection device (1) and infrared detection position connection The temperature of the material or the grinding balls in the inner cavity of the ball grinding cylinder (6) is detected after penetrating through the ball grinding cylinder body (61);
the high-temperature pressure relief mechanism comprises a ball milling cylinder cover (62) and a high-temperature air-permeable sand core or a microporous ceramic plate welded in the middle of the ball milling cylinder cover (62), and the ball milling cylinder cover (62) is in threaded connection or clamping connection with the ball milling cylinder body (61); or, high temperature relief mechanism includes ball-milling cover (62), diaphragm stopper (64) and high temperature ventilative diaphragm (63), ball-milling cover (62) and ball-milling barrel (61) threaded connection or clamping connection, diaphragm stopper (64) and ball-milling cover (62) threaded connection or clamping connection, high temperature ventilative diaphragm (63) set up in the bottom of diaphragm stopper (64), diaphragm stopper (64) are provided with diaphragm stopper exhaust relief hole (66), ball-milling cover (62) are provided with ball-milling cover exhaust relief hole (65), diaphragm stopper exhaust relief hole (66), ball-milling cover exhaust relief hole (65) and high temperature ventilative diaphragm (63) mutually support and form exhaust relief passageway.
2. The laboratory roller type microwave high-temperature roasting ball mill as claimed in claim 1, wherein the driving transmission device comprises a driving motor (11), a transmission device (12) and two high-temperature resistant rollers (7) with limiting devices (15), the driving motor (11) and the transmission device (12) are both installed outside the microwave cavity (1), the driving motor (11) is connected with a control system (16), the two rollers (7) are symmetrically arranged below an inner cavity of the integral heat insulation structure (17), one ends of the two rollers (7) respectively penetrate through the integral heat insulation structure (17) and the side wall of the microwave cavity (1) not provided with a door lock system and are fixed on the supporting seat (13) through rolling bearings, the two rollers are connected with the driving motor (11) through the transmission device (12), the other ends of the two rollers (7) respectively penetrate through the integral heat insulation structure (17) and the side wall of the microwave cavity (1) not provided with a door lock system and are fixed on the supporting seat (13) through rolling bearings, microwave suppressors (14) are respectively arranged at the joints between the end parts of the two rollers (7) and the side wall of the microwave cavity (1), and the grinding roller (6) is placed on the two rollers (7) through the limiting devices (15).
3. Laboratory tumble microwave high-temperature roasting ball mill according to claim 2, characterized in that said integrated heat-insulating structure (17) is provided with a heat-insulating door (18) close to the side wall of the door lock system.
4. The laboratory roller type microwave high-temperature roasting ball mill according to claim 3, wherein the temperature measuring device further comprises a thermocouple (10), the thermocouple (10) is fixedly installed on the side wall of the microwave cavity (1) and penetrates through the side wall of the microwave cavity (1) and the integral heat insulation structure (17), the temperature measuring end of the thermocouple (10) extends to the inner cavity of the integral heat insulation structure (17), the thermocouple (10) is connected with the control system (16), and the thermocouple (10) measures the temperature of the inner cavity of the integral heat insulation structure.
5. Laboratory roller microwave high-temperature roasting ball mill according to claim 4, characterized in that the material of the ball mill cylinder (6) is glass or quartz glass or transparent ceramic.
6. The laboratory roller microwave high-temperature roasting ball mill according to claim 5, characterized in that the material of the high-temperature gas-permeable membrane (63) is glass fiber cloth or quartz fiber cloth or glass fiber cotton or alumina cotton or quartz cotton or mullite fiber cotton.
7. Laboratory tumble microwave high-temperature roasting ball mill according to claim 6, characterized in that the material of said rollers (7) is glass or quartz glass or ceramic.
8. The laboratory roller microwave high temperature roasting ball mill as claimed in claim 7, wherein the material of the grinding balls is non-metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111391781.8A CN114100787B (en) | 2021-11-23 | 2021-11-23 | Laboratory drum-type microwave high temperature calcination ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111391781.8A CN114100787B (en) | 2021-11-23 | 2021-11-23 | Laboratory drum-type microwave high temperature calcination ball mill |
Publications (2)
| Publication Number | Publication Date |
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| CN114100787A CN114100787A (en) | 2022-03-01 |
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| JPH07108158A (en) * | 1993-10-13 | 1995-04-25 | Murata Mfg Co Ltd | Heat treating device for ceramic raw material |
| CN202168236U (en) * | 2011-08-05 | 2012-03-14 | 湖南省中晟热能科技有限公司 | Shaft transmission microwave suppressor |
| CN102353261A (en) * | 2011-09-05 | 2012-02-15 | 湖南省中晟热能科技有限公司 | Microwave multifunctional high-temperature experimental furnace |
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