CN102278879A - Micro-wave roller kiln - Google Patents
Micro-wave roller kiln Download PDFInfo
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- CN102278879A CN102278879A CN2011102245442A CN201110224544A CN102278879A CN 102278879 A CN102278879 A CN 102278879A CN 2011102245442 A CN2011102245442 A CN 2011102245442A CN 201110224544 A CN201110224544 A CN 201110224544A CN 102278879 A CN102278879 A CN 102278879A
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Abstract
The invention discloses a micro-wave roller kiln, which comprises a temperature-rise section furnace body, a heat-preserving section furnace body, a cooling section furnace body (4), a dehumidification air-exhaust system (9), a cooling air-exhaust system (10), a temperature measurement control system (7) and a roller transmission system (6), wherein the temperature-rise section furnace body is a micro-wave temperature-rise section furnace body (2); the heat-preserving section furnace body is a micro-wave heat-preserving section furnace body (3); micro-wave energy feedback systems (8) of the micro-wave temperature-rise section furnace body (2) and the micro-wave heat-preserving section furnace body (3) are connected with micro-wave control systems (13); an inlet end of the micro-wave temperature-rise section furnace body (2) is in butt joint with a kiln-entering micro-wave restraint section (1); an outlet end of the cooling-section furnace body (4) is in butt joint with a kiln-exiting micro-wave restraint section (5); and connecting positions of all parts of the whole kiln are respectively provided with a micro-wave sealing device. The micro-wave roller kiln provided by the invention is low in heating temperature, high in response speed and high in quality of a treatment material.
Description
Technical field
The present invention relates to a kind of roller kilns, particularly relate to a kind of microwave roller kilns that in roller way kiln, utilize heating using microwave to replace traditional resistance heated, combustion gas heating, fuel Heating.
Technical background
Roller kilns are large-scale kilns of the continuous discharging of a kind of continuous feed, and the production efficiency height is widely used in the drying and the sintering of industries such as pottery, metallurgy, battery material.Present mode of heating is resistance heated, combustion gas heating, three kinds of modes of fuel Heating.The structure of traditional roller kilns is: comprise intensification section body of heater and soaking zone body of heater, cooling section body of heater, dehumidifier exhaust system, cooling, air discharging system, temp testing controlling system, heat-insulation system and transmission system that resistance heated, combustion gas heating or fuel Heating are formed, the intensification section body of heater and the soaking zone body of heater that adopt resistance heated, combustion gas heating or fuel Heating to form, resistance heated, combustion gas heating or fuel Heating heat material, sintering temperature is generally than higher, reaction speed is slow, and the quality of material is low behind the sintering; To the dry heat temperature height of material, rate of drying is slow.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of heating-up temperature is low, and reaction speed is fast, handles the high microwave roller kilns of material quality.
In order to solve the problems of the technologies described above, microwave roller kilns provided by the invention, comprise the section body of heater that heats up, the soaking zone body of heater, the cooling section body of heater, the dehumidifier exhaust system, the cooling, air discharging system, temp testing controlling system and club transmission system, described intensification section body of heater is a microwave intensification section body of heater, described soaking zone body of heater is a microwave soaking zone body of heater, the microwave energy feedthrough system of described microwave intensification section body of heater and described microwave soaking zone body of heater is connected with the microwave control system, the kiln microwave suppresses section to the entrance point of described microwave intensification section body of heater to being connected to into, the port of export of described cooling section body of heater suppresses section to being connected to the kiln discharge microwave, and each parts junction of whole kiln is equipped with microwave sealing means.
The microwave energy feedthrough system of described microwave intensification section body of heater and described microwave soaking zone body of heater all adopts the microwave leaky antenna, and described microwave leaky antenna is corresponding interlaced arrangement in the body of heater both sides.
The structure that adopt in temperature field in described microwave intensification section body of heater and the described microwave soaking zone body of heater is: be provided with lead-in in body of heater, inwall at described body of heater is provided with ceramic warming plate, is provided with ceramic top plate and ceramic side plate, the first ceramic lead-in and the second ceramic lead-in on described ceramic warming plate.
Be provided with the microwave leakage online detection alarm device that exceeds standard on the kilneye in turnover.
The microwave sealing means of described club transmission system is to be provided with first cut-off waveguide that entangles club on body of heater.
Described microwave sealing means is that a cover conductive seal circle is installed between the adpting flange face of body of heater and body of heater, between the flange face of body of heater and bell a cover conductive seal circle is installed.
The microwave sealing means of described dehumidifier exhaust system and described cooling, air discharging system is to be provided with a plurality of second cut-off waveguides arranged side by side on the weep hole of the body of heater in the fan housing of described dehumidifier exhaust system and described cooling, air discharging system.
Describedly advance the kiln microwave to suppress the structure that section and described kiln discharge microwave suppress section be to be provided with microwave inhibition sheet in body of heater.
The cooling system of described microwave energy feedthrough system is that the entrance point of magnetron is connected with the water inlet person in charge with supply-water pump by the water inlet branch road, the port of export of described magnetron is responsible for backwater with back water pump by the backwater branch road and is connected, and described backwater is responsible for and is connected with cooling tower.
Adopt the microwave roller kilns of technique scheme, preventing aspect the microwave leakage, be provided with special import and export microwave restraining device at the roller kilns import and export, the two stomidiums design that the transmission club passes body of heater has special-purpose microwave sealing means, microwave seal spare has all been designed in body of heater and body of heater junction, body of heater and bell junction, hydrofuge aspirating hole, cooling in the body of heater give from the outside that logical cooling air hole has all designed microwave sealing means in the stove, the microwave sealing means of temperature thermocouple and body of heater junction and the shielding of thermocouple temperature measurement are not subjected to the interference of microwave field.Aspect the microwave energy feed-in, be evenly distributed in body of heater for making microwave field, according to the characteristic of microwave, multimode cavity microwave energy feed-in mouth is set, take leaky antenna feed-in microwave energy.In body of heater the temperature field even aspect, insulation material adopts highly purified warming plate, the inner chamber that the stove inside thermal conservation material forms is equipped with refractory material.Magnetron adopts water-cooling pattern, and water cooling system adopts water inlet back water discharge technology earlier, makes the equilibrium of each point cooling water pressure, and main water return tube adopts zero-pressure backwater or negative pressure backwater.Aspect control, by temperature controller and PLC, the microwave energy feed-in of control microwave source automatically on the temperature curve of setting, the automatic overtemperature alarm of magnetron water cooling.Aspect safe handling, be provided with the microwave leakage online detection alarm device that exceeds standard at the turnover kilneye, protection user's safety.
Advance the kiln microwave and suppress section and kiln discharge microwave inhibition section, make microwave attenuation to meeting national standard.
The weep hole of described dehumidifier exhaust system and described cooling, air discharging system is provided with multitube second cut-off waveguide arranged side by side, and the length of second cut-off waveguide is got 1.2 times of cut-off waveguide length, and the quantity of pipe and diameter determine according to the hydrofuge amount.
The temperature thermocouple of temp testing controlling system is connected the employing fine thread with body of heater, screw thread should have enough length, and temperature thermocouple is contacted well with body of heater.
The temperature thermocouple of temp testing controlling system adopts armouring, is the stainless steel armouring during low temperature.High temperature adopts silicon molybdenum armouring, and the inside thermometric is a double platinum rhodium platinum.
The magnetron water cooling of the cooling system of described microwave energy feedthrough system adopts principle first-in last-out, and to make CWR road pressure be zero or be negative pressure.The magnetron cooling water is provided with the water temperature overtemperature alarm, and closes the microwave source of cooling water overtemperature automatically.
Temperature controller, PLC, touch-screen constitute microwave source open and close control, stablize the furnace chamber temperature curve.
Adopt the power supply of isolating transformer isolated controlling components and parts.
Be provided with the microwave leakage online detection alarm device that exceeds standard at the turnover kilneye, in a single day microwave leakage exceeds standard, and just gives the alarm, and alert is fixed a breakdown.
The present invention utilizes heating using microwave to replace the microwave roller kilns of traditional resistor heating, combustion gas heating, fuel Heating.Three kinds of traditional heating mode of heating using microwave and front are different on the mechanism of action, and same material is heated comparison, utilize the sintering temperature of heating using microwave material lower than traditional heating, and reaction speed is fast, the quality height of material behind the sintering; Utilize heating using microwave can realize low temperature drying to the drying of material, rate of drying is fast.
In sum, the present invention is that a kind of heating-up temperature is low, and reaction speed is fast, handles the high microwave roller kilns of material quality.
Description of drawings
Fig. 1 is a microwave roller kilns structural front view of the present invention.
Fig. 2 is a microwave roller kilns structure vertical view of the present invention.
Fig. 3 is turnover kiln end microwave restraining device structural representation.
Fig. 4 is a club microwave leakage schematic diagram of sealing device.
Fig. 5 is a weep hole microwave sealing means structural representation.
Fig. 6 is the insulation construction schematic diagram.
Fig. 7 is a cooling water design principle schematic diagram.
The specific embodiment
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the kiln microwave suppresses section 1 to the entrance point of microwave intensification section body of heater 2 to being connected to into, port of export butt joint microwave soaking zone body of heater 3 one ends of microwave intensification section body of heater 2, one end of the other end butt joint cooling section body of heater 4 of microwave soaking zone body of heater 3, cooling section body of heater 4 other ends suppress section 5 to being connected to the kiln discharge microwave, advancing the kiln microwave suppresses section 1 and kiln discharge microwave and suppresses section 5 and be equipped with the microwave leakage online detection alarm device 14 that exceeds standard, the microwave energy feedthrough system 8 of microwave intensification section body of heater 2 and microwave soaking zone body of heater 3 is connected with microwave control system 13, the microwave energy feedthrough system 8 of microwave intensification section body of heater 2 and microwave soaking zone body of heater 3 all adopts microwave leaky antenna 25, microwave leaky antenna 25 is connected with microwave source 26, and microwave leaky antenna 25 is corresponding interlaced arrangement in body of heater 15 both sides.A microwave intensification section body of heater 2 is connected with dehumidifier exhaust system 9, and microwave intensification section body of heater 2 and microwave soaking zone body of heater 3 are provided with temp testing controlling system 7, and cooling section body of heater 4 is connected with cooling, air discharging system 10, and whole kiln is provided with ceramic wool plate 12 and club transmission system 6.The structure that adopt in temperature fields in microwave intensification section body of heater 2 and the microwave soaking zone body of heater 3 is: be provided with lead-in 16 in body of heater 15, inwall at described body of heater 15 is provided with ceramic warming plate 17, is provided with ceramic top plate 18 and ceramic side plate 21, the first ceramic lead-in 19 and the second ceramic lead-in 20 on ceramic warming plate 17.The microwave sealing means of club transmission system 6 is to be provided with first cut-off waveguide 27 that entangles club 24 on body of heater 15.One cover conductive seal circle is installed between the adpting flange face of body of heater 15 and body of heater 15, between the flange face of body of heater 15 and bell, a cover conductive seal circle is installed.The microwave sealing means of dehumidifier exhaust system 9 and cooling, air discharging system 10 is to be provided with a plurality of second cut-off waveguides 29 arranged side by side on the weep hole of the body of heater 15 in the fan housing 28 of dehumidifier exhaust system 9 and cooling, air discharging system 10.The structure of advancing kiln microwave inhibition section 1 and kiln discharge microwave inhibition section 5 is to be provided with microwave to suppress sheet 30 in body of heater 15.The cooling system of microwave energy feedthrough system 8 is that the entrance point of magnetron 31 is connected with the supply-water pump 33 and the water inlet person in charge 34 by water inlet branch road 32, the port of export of described magnetron 31 is responsible for 37 by backwater branch road 35 and back water pump 36 and backwater and is connected, and the described backwater person in charge 37 is connected with cooling tower 38.
Advance the kiln microwave and suppress section 1 and kiln discharge microwave to suppress section 5 different with conventional electricity (combustion gas, fuel oil) kiln, their main effect is the into microwave inhibition of kiln end and kiln discharge end.Prevent that microwave from leaking at the charging aperture and the discharging opening of kiln.Microwave suppresses structure such as Fig. 3.Microwave suppresses sheet 30 and body of heater 15 full welds, and microwave inhibition sheet 30 spacings guarantee to be half-wave wavelength odd-multiple in each group.
Be provided with dehumidifier exhaust system 9 in the temperature rise period.The weep hole of dehumidifier exhaust system 9 should be designed to adjustable, and wet-emitting blower adopts frequency control.The adjusting of dehumidifier exhaust system 9 influences the heating curve of material.
The weep hole of dehumidifier exhaust system 9 and cooling, air discharging system 10 (vent) microwave sealing means such as Fig. 5, second cut-off waveguide 29 links together with body of heater 15 usefulness argon arc welding full welds, hot blast in the body of heater 15 or steam are in the fan housing 28 that second cut-off waveguide 29 is discharged outside the body of heater 15, and blower fan is extracted hot blast or steam out through airduct 39.Airduct 39 is provided with control valve 40, the opening degree of control valve 40, the intensity that can regulate the air draft dehumidifier.
The microwave energy of microwave soaking zone body of heater 3 feed-ins mainly is to replenish the kiln dispersed heat.
Be provided with cooling, air discharging system 10 at cooling section body of heater 4, adopt high pressure positive blower air blast in body of heater, the high-temperature blower exhausting, blower fan adopts frequency converter timing.Each parameter of regulating cooling system can realize that material presses the technological requirement cooling.
Club transmission system 6 by a plurality of motors of Frequency Converter Control, realizes synchronous variable-speed, the same speed operation of club 24.Club 24 need pass burner hearth, and stretch out outside the body of heater at two ends.Pass the hole of body of heater, need seal microwave.Hermetically-sealed construction such as Fig. 4.First cut-off waveguide 27 links together with body of heater 15 usefulness argon arc welding full welds, and club 24 passes first cut-off waveguide 27.
Between body of heater 15 and body of heater 15 adpting flange faces, press one deck conductive seal circle, between the flange face and bell of body of heater 15, also press one deck conductive seal circle.
The temperature thermocouple of temp testing controlling system 7 adopts armoured thermocouple, adopts stainless steel armouring list to prop up platinum-rhodium-platinum thermocouple for being lower than 800 ℃.Adopt two platinum-rhodium-platinum thermocouples of silicon molybdenum pipe armouring for being higher than 800 ℃.
The hole of opening because of mounting process is required on the body of heater 15 must cover blind plate after installation, press a cover conductive seal circle between body of heater 15 and blind plate.
The microwave energy feedthrough system 8 of microwave intensification section body of heater 2 and microwave soaking zone body of heater 3 all adopts microwave leaky antenna 25, and microwave leaky antenna 25 is connected with microwave source 26, and microwave leaky antenna 25 is corresponding interlaced arrangement in body of heater 15 both sides.
Furnace chamber internal insulation structure such as Fig. 6, in body of heater 15, be provided with lead-in 16, inwall at body of heater 15 is provided with ceramic warming plate 17, on ceramic warming plate 17, be provided with ceramic top plate 18 and ceramic side plate 21, the first ceramic lead-in 19 and the second ceramic lead-in 20, insulation material adopts the ceramic fibre warming plate, ceramic top plate 18 and ceramic side plate 21 are formed the furnace chamber inner chamber, are provided with carrying roller 22 in the furnace chamber, and ceramic top plate 18 and ceramic warming plate 17 are provided with weep hole 23.
The cooling water design is as Fig. 7, the cooling system of microwave energy feedthrough system 8 is that the entrance point of magnetron 31 is connected with the supply-water pump 33 and the water inlet person in charge 34 by water inlet branch road 32, the port of export of magnetron 31 is responsible for 37 by backwater branch road 35 and back water pump 36 and backwater and is connected, and the backwater person in charge 37 is connected with cooling tower 38.It is opposite to adopt 32 arrangements of water inlet branch road and backwater branch road 35 to arrange, water inlet back draining earlier, and the intake pressure height of elder generation's water inlet, the discharge pressure of back draining is also high, Inlet and outlet water pressure differential basically identical.Magnetron 31 coolings need to guarantee discharge.For increasing the flow velocity of water, reduce backwater and be responsible for 37 pressure, on water return pipeline, install back water pump 36, back water pump 36 is extracted into water on the cooling tower 38 on the one hand water is cooled off, and has reduced the pressure in the return pipe on the other hand.
The microwave power supply transformer of microwave source 26 is 380V, adopts delta connection, eliminates the potential difference of zero line to ground wire.The power supply of microwave control system 13 separates power supply with the power supply of the microwave power supply of microwave source 26 with isolating transformer.Control line and motor cable are walked the cable crane span structure respectively.
Turnover kiln port is equipped with the microwave leakage online detection alarm device 14 that exceeds standard, and microwave is revealed and exceeded standard, and the microwave leakage online detection alarm device 14 that exceeds standard is reported to the police, and reminds operating personnel to remove fault, the protection personal safety.
Claims (9)
1. microwave roller kilns, comprise the section body of heater that heats up, the soaking zone body of heater, cooling section body of heater (4), dehumidifier exhaust system (9), cooling, air discharging system (10), temp testing controlling system (7) and club transmission system (6), it is characterized in that: described intensification section body of heater is a microwave intensification section body of heater (2), described soaking zone body of heater is a microwave soaking zone body of heater (3), the microwave energy feedthrough system (8) of described microwave intensification section body of heater (2) and described microwave soaking zone body of heater (3) is connected with microwave control system (13), described microwave heats up, and the kiln microwave suppresses section (1) to section entrance point of body of heater (2) to being connected to into, the port of export of described cooling section body of heater (4) suppresses section (5) to being connected to the kiln discharge microwave, and each parts junction of whole kiln is equipped with microwave sealing means.
2. microwave roller kilns according to claim 1, it is characterized in that: the microwave energy feedthrough system (8) of described microwave intensification section body of heater (2) and described microwave soaking zone body of heater (3) all adopts the microwave leaky antenna, and described microwave leaky antenna is corresponding interlaced arrangement in the body of heater both sides.
3. microwave roller kilns according to claim 1 and 2, it is characterized in that: the structure that adopt in the temperature field in described microwave intensification section body of heater (2) and the described microwave soaking zone body of heater (3) is: be provided with lead-in (16) in body of heater (15), inwall at described body of heater (15) is provided with ceramic warming plate (17), is provided with ceramic top plate (18) and ceramic side plate (21), the first ceramic lead-in (19) and the second ceramic lead-in (20) on described ceramic warming plate (17).
4. microwave roller kilns according to claim 1 and 2 is characterized in that: be provided with the microwave leakage online detection alarm device (14) that exceeds standard on the kilneye in turnover.
5. microwave roller kilns according to claim 1 and 2 is characterized in that: the microwave sealing means of described club transmission system (6) is to be provided with first cut-off waveguide (27) that entangles club (24) on body of heater (15).
6. microwave roller kilns according to claim 1 and 2, it is characterized in that: described microwave sealing means is that a cover conductive seal circle is installed between the adpting flange face of body of heater (15) and body of heater (15), between the flange face of body of heater (15) and bell a cover conductive seal circle is installed.
7. microwave roller kilns according to claim 1 and 2 is characterized in that: the microwave sealing means of described dehumidifier exhaust system (9) and described cooling, air discharging system (10) is to be provided with a plurality of second cut-off waveguides (29) arranged side by side on the weep hole of the body of heater (15) in the fan housing (28) of described dehumidifier exhaust system (9) and described cooling, air discharging system (10).
8. microwave roller kilns according to claim 1 and 2 is characterized in that: describedly advance the kiln microwave to suppress the structure that section (1) and described kiln discharge microwave suppress section (5) be to be provided with microwave inhibition sheet (30) in body of heater (15).
9. microwave roller kilns according to claim 1 and 2, it is characterized in that: the cooling system of described microwave energy feedthrough system (8) is that the entrance point of magnetron (31) is connected with the supply-water pump (33) and the water inlet person in charge (34) by water inlet branch road (32), the port of export of described magnetron (31) is responsible for (37) by backwater branch road (35) with back water pump (36) and backwater and is connected, and described backwater is responsible for (37) and is connected with cooling tower (38).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102245442A CN102278879A (en) | 2011-08-05 | 2011-08-05 | Micro-wave roller kiln |
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| CN2011102245442A CN102278879A (en) | 2011-08-05 | 2011-08-05 | Micro-wave roller kiln |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419085A (en) * | 2011-12-20 | 2012-04-18 | 湖南省中晟热能科技有限公司 | Microwave and electrical dual-firing top-hat kiln |
| CN102419075A (en) * | 2011-12-20 | 2012-04-18 | 湖南省中晟热能科技有限公司 | Microwave and steam hybrid heating roller table drying kiln |
| CN102425939A (en) * | 2011-12-20 | 2012-04-25 | 湖南省中晟热能科技有限公司 | Microwave heating bell kiln |
| CN102519247A (en) * | 2011-12-20 | 2012-06-27 | 湖南省中晟热能科技有限公司 | Microwave heating high temperature rotary kiln |
| CN103145425A (en) * | 2013-02-01 | 2013-06-12 | 湖南省中晟热能科技有限公司 | Method for firing household porcelain by microwave high temperature roller kiln |
| CN106016302A (en) * | 2016-07-07 | 2016-10-12 | 湖南省中晟热能科技有限公司 | Carbon-containing residue reduction method and device thereof |
| CN106834626A (en) * | 2017-03-23 | 2017-06-13 | 湖南省中晟热能科技有限公司 | A kind of microwave steel belt furnace |
| CN108151532A (en) * | 2017-12-15 | 2018-06-12 | 湖南景远微波科技有限公司 | A kind of roller bed type microwave calcining novel process equipment |
| WO2021120801A1 (en) * | 2019-12-18 | 2021-06-24 | 科达制造股份有限公司 | Microwave and gas-fired hybrid heating roller kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419085A (en) * | 2011-12-20 | 2012-04-18 | 湖南省中晟热能科技有限公司 | Microwave and electrical dual-firing top-hat kiln |
| CN102419075A (en) * | 2011-12-20 | 2012-04-18 | 湖南省中晟热能科技有限公司 | Microwave and steam hybrid heating roller table drying kiln |
| CN102425939A (en) * | 2011-12-20 | 2012-04-25 | 湖南省中晟热能科技有限公司 | Microwave heating bell kiln |
| CN102519247A (en) * | 2011-12-20 | 2012-06-27 | 湖南省中晟热能科技有限公司 | Microwave heating high temperature rotary kiln |
| CN102419075B (en) * | 2011-12-20 | 2013-12-11 | 湖南省中晟热能科技有限公司 | Microwave and steam hybrid heating roller table drying kiln |
| CN103145425A (en) * | 2013-02-01 | 2013-06-12 | 湖南省中晟热能科技有限公司 | Method for firing household porcelain by microwave high temperature roller kiln |
| CN106016302A (en) * | 2016-07-07 | 2016-10-12 | 湖南省中晟热能科技有限公司 | Carbon-containing residue reduction method and device thereof |
| CN106834626A (en) * | 2017-03-23 | 2017-06-13 | 湖南省中晟热能科技有限公司 | A kind of microwave steel belt furnace |
| CN108151532A (en) * | 2017-12-15 | 2018-06-12 | 湖南景远微波科技有限公司 | A kind of roller bed type microwave calcining novel process equipment |
| WO2021120801A1 (en) * | 2019-12-18 | 2021-06-24 | 科达制造股份有限公司 | Microwave and gas-fired hybrid heating roller kiln |
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Application publication date: 20111214 |