CN201053814Y - Heat-tolerant metal furnace tube continuous external heating type protective atmosphere converter - Google Patents
Heat-tolerant metal furnace tube continuous external heating type protective atmosphere converter Download PDFInfo
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- CN201053814Y CN201053814Y CNU2007200320950U CN200720032095U CN201053814Y CN 201053814 Y CN201053814 Y CN 201053814Y CN U2007200320950 U CNU2007200320950 U CN U2007200320950U CN 200720032095 U CN200720032095 U CN 200720032095U CN 201053814 Y CN201053814 Y CN 201053814Y
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Abstract
The utility model relates to a continuous external heating typed atmosphere protection rotary finance of a furnace tube which is made of the heat-resistant metal. The utility model is suitable for the heat treatment of powder or particles such as the lithium ion battery material and the rare earth material, etc. The structure of the equipment mainly comprises a rotary furnace tube, a feeding system, a discharging system, a transmission system, a heating system, a sealing system and an exhausting system, etc. The utility model is characterized in that the feeding system of the rotary furnace is improved and supplemented, a more reasonable heating and heat preservation structure is adopted, the shape of the cross section of the furnace tube is round or hexagon, and scrapers with different forms are arranged in the inner part of the furnace tube, a more perfect sealing structure is adopted, the design of the integral structure of the equipment is more perfect and reasonable compared with the traditional rotary furnace.
Description
Technical field
It is the continuous external-heat atmosphere protection rotary furnace of boiler tube with the heating resisting metal that the utility model relates to a kind of, is specially adapted to the heat treatment such as drying, calcining, pyroreaction of the powder of lithium ion battery material, rare earth material, chemical catalyst material, magnetic material, powdered metallurgical material, nonferrous materials and kaolin nonmetallic mineral material or particle.
Background technology
Heat treatment is the critical process in various powders or the granular material preparation process, these material hot treatment processes of past are normally used to be pushed bat kiln, tunnel cave, shuttle kiln etc., be material to be packed in the containers such as saggar, material with saggar in kiln, be dried, calcining etc., material is in relative static conditions, the heat conduction from outside to inside, speed is slow, and it is inhomogeneous to be heated, and occurs defectives such as half-cooked, burning easily, and being subjected to the pollution of saggar and heating source, energy consumption is also higher relatively.And come material handling with rotary furnace because the rotation of boiler tube and the effect of boiler tube inwall scraper plate, material has obtained the effect stirring and mix in boiler tube, thus material be heated more even.Because material can produce steam or other gas derivative in heat treatment process, need in time obtain discharging, some material also requires to heat-treat under certain atmosphere, this just requires rotary furnace structurally will have good sealing property, to reduce because emission gases or cause the uneven phenomenon of boiler tube internal atmosphere when feeding gas.
The Thermal Equipment that rotary furnace is heat-treated as loose shape powder or particle, in the last few years, continuous development along with science and technology, in industries such as chemical industry, metallurgy, cement, refractory material, nonmetallic ores, extensively promoted and used, as: ZL 89205257.9, and denomination of invention is: magnetic material sintering external-heating rotary kiln; ZL 95226707.1, and denomination of invention is: scrap lead melting rotary furnace; CN01128612.1, denomination of invention is: rotary kiln with resistor furnace for heating and calcining kaolin; CN 96238568.9, denomination of invention: electric heating rotary furnace for ferromagnetic materials; CN 96119442.1, denomination of invention: the ferrite prefiring rotary kiln.
The design feature of the above-mentioned rotary furnace of analysis-by-synthesis is found:
1, feed system is the part that rotary furnace equipment is formed, and each patent has all more or less been set forth material and how to have been sent in the boiler tube, as adopting screw feeder, does not adopt which kind of method, equipment to come material loading and blanking but all set forth material.
2, heat tracing structure.Each patent adopts bottom and the left and right sides heating of Elema at boiler tube substantially, and insulation material adopts the heavy firebrick structure.Because Elema in use for some time, airborne oxygen, carbon dioxide and steam can impel the oxidation of Elema consumingly, increase the resistance of Elema, and it is aging that it is produced, and different excellent degree of oxidations is different, will cause the inhomogeneities of heating-up temperature.The insulation material amount of stored heat height of heavy refractory brick, it is slow to heat up, the energy consumption height, and the flexibility ratio of operation is low.
3, the setting of boiler tube shape and scraper plate.The boiler tube shape of each patent is circle at present, and inwall is provided with continuous helical shape scraper plate and flight, and material has been played certain upset and immixture, but the dead angle is too much, processing technology to boiler tube causes very burden, and material folding easily, influences the quality of burning till of material.
4, the furnace sealing effect is as one wishes not to the utmost.The hermetically-sealed construction of each patent or simple in structure, poor sealing easily causes furnace gas to leak or air enters in the stove; Can reach instructions for use, but complex structure is difficult for installing, overhauling the cost height.
In order to make the more reasonable structure of rotary furnace, can prepare more high-quality material, be necessary a kind of heat treated equipment of material that is more suitable for of design on existing rotary furnace equipment basis.
Summary of the invention
The purpose of this utility model is the shortcoming that overcomes prior art, proposes the continuous external-heat atmosphere protection of a kind of heating resisting metal boiler tube rotary furnace,
The technical solution of the utility model is: the continuous external-heat atmosphere protection of a kind of heating resisting metal boiler tube rotary furnace, it is characterized in that body of heater is made up of steel plate matter cylindrical shell and insulation material, axis with boiler tube is that benchmark is installed on the framework, boiler tube adopts heating resisting metal to make, central axis by burner hearth, forward bearing and rear support support, and the cross section of boiler tube is round or hexagonal, and the inwall of revolution boiler tube is provided with along boiler tube axis equally distributed sine and cosine corrugated scraper plate or oblique guide scraper plate; The knocking device that one-period is respectively arranged in the front-end and back-end of boiler tube---preceding beat piece and after beat piece; Front end left side arm and preceding bearing connecting portion at boiler tube are provided with the stove head seal device, are provided with the stove tail sealing device in the rear end and the discharging shell junction of boiler tube; Bearing top is provided with gas exhaust piping before rotary furnace, and the bearing bottom is provided with blowoff line before rotary furnace; Air-channel system unrolls around the body of heater, is furnished with the feeding warehouse gas circuit at the feed system place respectively, is furnished with out feed bin gas circuit and furnace exhaust gas curtain at the discharge system place, and the place is furnished with the burner air curtain in preceding bearing both sides; Be provided with the burner air cooling equipment at rotary furnace front end transmission side, be provided with the air-cooled or water cooling plant of stove tail at rotary furnace rear end exit side.
Feed system is connected to form by vacuum loader, feeding warehouse, automatic discharger, screw(-type) feeder from top to bottom, screw(-type) feeder stretches in the boiler tube by preceding bearing, and screw(-type) feeder is made up of stepless speed regulation reducing motor, carrier pipe, equidistant or unequal distant screw axle.
Discharge system is formed by connecting by going out feed bin, four support roller bearings, discharging shell, automatic discharger, and wherein four support roller bearings hang over the boiler tube afterbody, between discharging shell inner ring and the boiler tube packing seal are arranged.
Transmission system is made up of driving motor and sprocket wheel, wherein drive sprocket is installed on the left arm of boiler tube front end, be connected with driving motor by chain, driving motor can adopt armstrong's patent stepless speed change type reductor or frequency control reductor, and rotating speed is 0.5～10 rev/min.
Rotary furnace is divided into preheating zone A, thermal treatment zone B, flat-temperature zone C, cooling zone, is equipped with alumina silicate fibre lightweight heating module at preheating zone A, thermal treatment zone B, flat-temperature zone C, and temperature thermocouple is housed, and the cooling zone boiler tube is heating or heat preservation module not.
Effect and the advantage that the utlity model has are:
1, improved and replenished the feed system of rotary furnace, made it more perfect, continuity is better, and has guaranteed the quality of product and reduced pollution.
2, adopted more rational heat tracing structure.Alumina silicate fibre lightweight heating module has that accumulation of heat is low, good heat-insulation effect, the fast advantage of programming rate, and heater strip adopts Aludirome or nichrome, has serviceability temperature height, surface loading height, advantages such as the operating period is long, proportion is little, low price.
3, cross sectional shape is circular or hexagonal boiler tube, be provided with wavy scraper plate of equally distributed sine and cosine or oblique guide scraper plate at the boiler tube inwall, impel material in boiler tube, radially to reach axially play back and forth, heating surface area increases, heat conduction velocity is fast, thereby reach fully, evenly, stably be heated, material reaction is more complete.
4, more perfect hermetically-sealed construction can make furnace pressure reach ± 0.5Kpa, and the space can keep oxidizing atmosphere (in the air) and neutral atmosphere (nitrogen or carbon dioxide etc.) in the boiler tube, can also feed reducibility gas.
5, equipment overall structure is compared with traditional rotary furnace all difference, and design more becomes perfect, reasonable, has guaranteed the stability, uniformity of equipment reliability of operation and product.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the schematic diagram of round kiln tube section.
Fig. 3 is the schematic diagram in hexagon boiler tube cross section.
Fig. 4 is a sine and cosine corrugated scraper plate schematic diagram.
Fig. 5 is oblique guide scraper plate schematic diagram.
The specific embodiment
The utility model is made up of revolution boiler tube, feed system, discharge system, transmission system, body of heater, knocking device, sealing system, furnace body frame, gas extraction system, air-channel system, cooling system, heating system, control system; Feed system, discharge system, transmission system, body of heater, knocking device, sealing system, gas extraction system, air-channel system, cooling system, heating system are benchmark with the axis of revolution boiler tube all, are contained in the relevant position on the furnace body frame respectively.
The effective trade mark of rotary furnace is heat-resisting alloy manufacturings such as SUS310S, SUS316L, SUS302, SUS410, SUS304, boiler tube 28 cross sections are circle or hexagon, as shown in Figure 2, central axis by burner hearth, forward bearing 29 and rear support 30 support, the inwall of revolution boiler tube is provided with along boiler tube axis equally distributed sine and cosine corrugated scraper plate or oblique guide scraper plate, as shown in Figure 3.
As shown in Figure 1, feed system is connected to form by vacuum loader 1, feeding warehouse 2, automatic discharger 3, screw(-type) feeder 4 from top to bottom, and screw(-type) feeder 4 is made up of stepless adjustment motor, carrier pipe, equidistant or unequal distant screw axle.Screw(-type) feeder 4 stretches in the boiler tube 28 by preceding bearing 29.
Transmission system is made up of driving motor 9 and sprocket wheel 10, driving motor 9 can adopt armstrong's patent stepless speed change type reductor or frequency control reductor, drive sprocket 10 is installed on the left arm 31 of boiler tube 28 front ends, be connected with driving motor 9 by chain, 0.5～10 rev/min of rotating speed, can regulate continuously, and have the manual-operated emergent drive unit, in order to the usefulness that has a power failure or break down.
Four support roller bearings 6 of discharge system hang over boiler tube 28 afterbodys, between discharging shell 7 inner rings and the boiler tube 28 packing seal are arranged.
Body of heater is made up of steel plate matter cylindrical shell 11 and insulation material 12, axis with boiler tube 28 is that benchmark is installed on the framework 17, the height of framework 17 is regulated by the spiral support screw before and after it 18, can make rotary furnace become the low level inclination in preceding high back of 0～8 degree with ground, the level inclination of revolution boiler tube is identical with rotary furnace, and the span of revolution boiler tube between preceding bearing 29 and rear support 30 supports is 0.1～30 meter.
The knocking device that one-period is respectively arranged in the front-end and back-end of boiler tube 28---preceding beat piece 13 and after beat piece 14, the sticking parietal layer of boiler tube 28 inner surface material dust is come off; Be provided with burner air cooling equipment 24 at rotary furnace front end transmission side, be provided with the air-cooled or water cooling plant 25 of stove tail at rotary furnace rear end exit side: arm 31 is provided with stove head seal device 15 with preceding bearing 29 junctions on the front end left side of revolution boiler tube, rear end and discharging shell 7 junctions at the revolution boiler tube are provided with stove tail sealing device 16, guaranteed the air-tightness of boiler tube 28 inside, furnace pressure can reach ± 0.5Kpa, the space can keep oxidizing atmosphere (in the air) and neutral atmosphere (nitrogen or carbon dioxide etc.) in the boiler tube 28, can also feed reducibility gas.
Rotary furnace is divided into preheating zone A, thermal treatment zone B, flat-temperature zone C, cooling zone.Preheating zone A is to entering the preheating in early stage of material in the stove, and makes adsorbed water and crystallization evaporation of water in the material; Thermal treatment zone B is the process that material is heated up gradually along process curve; Flat-temperature zone C is that material carries out the well-mixed process of complete reaction; The cooling zone is the process that the material after the complete reaction cools off gradually.Be equipped with alumina silicate fibre lightweight heating module 27 at preheating zone A, thermal treatment zone B, flat-temperature zone C, accumulation of heat is low, good heat-insulation effect, programming rate are fast, and temperature thermocouple is housed, and temperature is regulated by the material Technology for Heating Processing by temperature control system.The cooling zone boiler tube is heating or heat preservation module not, is provided with air-cooled or water-cooled 25 devices of stove tail.
For the convenience that guarantees the material material loading and the material of avoiding entering feed bin are brought air into, the feed system of rotary furnace adopts vacuum loader 1 material loading, automatic discharger 3 blankings, screw(-type) feeder 4 chargings, material enters feeding warehouse 2 by vacuum loader 1, enter screw(-type) feeder 4 through automatic discharger 3, screw(-type) feeder 4 is sent material into the revolution boiler tube by helical axis, because under the rotation of revolution boiler tube and the effect of scraper plate, material constantly radially reaches axially play back and forth in boiler tube, boiler tube 28 has certain inclination simultaneously, the total flow direction of material is to flow to the stove tail by burner, by preheating zone A, thermal treatment zone B, flat-temperature zone C, the heat treatment reaction is finished in the cooling zone, discharges through discharger 8 from going out feed bin 5 then.
Claims (7)
1. the continuous external-heat atmosphere protection of heating resisting metal boiler tube rotary furnace, it is characterized in that body of heater is made up of steel plate matter cylindrical shell (11) and insulation material (12), axis with boiler tube (28) is that benchmark is installed on the framework (17), boiler tube (28) adopts heating resisting metal to make, by the central axis of burner hearth, forward bearing (29) and rear support (30) support; The knocking device that one-period is respectively arranged in the front-end and back-end of boiler tube (28)---preceding beat piece (13) and after beat piece (14); Front end left side arm (31) at boiler tube (28) is provided with stove head seal device (15) with preceding bearing (29) connecting portion, is provided with stove tail sealing device (16) in the rear end and discharging shell (7) junction of boiler tube (28); Bearing before rotary furnace (29) top is provided with gas exhaust piping (32), and bearing before rotary furnace (29) bottom is provided with blowoff line (33); The pipeline of air-channel system (19) unrolls around the body of heater, be installed on the furnace body frame (17), be furnished with feeding warehouse gas circuit (22) at the feed system place, the place is furnished with burner air curtain (20) in preceding bearing (29) both sides, is furnished with furnace exhaust gas curtain (21) at the discharge system place and goes out feed bin gas circuit (23); Be provided with burner air-cooled (24) device at rotary furnace front end transmission side, be provided with air-cooled or water-cooled (25) device of stove tail at rotary furnace rear end exit side.
2. the continuous external-heat atmosphere protection of heating resisting metal boiler tube as claimed in claim 1 rotary furnace; it is characterized in that feed system is connected to form by vacuum loader (1), feeding warehouse (2), automatic discharger (3), screw(-type) feeder (4) from top to bottom; screw(-type) feeder (4) stretches in the boiler tube (28) by preceding bearing (29), and screw(-type) feeder (4) is made up of stepless speed regulation reducing motor, carrier pipe, equidistant or unequal distant screw axle.
3. the continuous external-heat atmosphere protection of heating resisting metal boiler tube as claimed in claim 1 rotary furnace; it is characterized in that discharge system is formed by connecting by going out feed bin (5), four support roller bearings (6), discharging shell (7), automatic discharger (8); wherein four support roller bearings (6) hang over boiler tube (28) afterbody, between discharging shell (7) inner ring and the boiler tube (28) packing seal are arranged.
4. the continuous external-heat atmosphere protection of heating resisting metal boiler tube as claimed in claim 1 rotary furnace; it is characterized in that transmission system is made up of driving motor (9) and sprocket wheel (10); wherein drive sprocket (10) is installed on the left arm (31) of boiler tube front end; be connected with driving motor (9) by chain; driving motor (9) can adopt armstrong's patent stepless speed change type reductor or frequency control reductor, and rotating speed is 0.5～10 rev/min.
5. the continuous external-heat atmosphere protection of heating resisting metal boiler tube as claimed in claim 1 rotary furnace; it is characterized in that rotary furnace is divided into preheating zone A, thermal treatment zone B, flat-temperature zone C, cooling zone; be equipped with alumina silicate fibre lightweight heating module (27) at preheating zone A, thermal treatment zone B, flat-temperature zone C; and temperature thermocouple is housed, the cooling zone boiler tube is heating or heat preservation module not.
6. the continuous external-heat atmosphere protection of heating resisting metal boiler tube as claimed in claim 1 rotary furnace, the cross section that it is characterized in that boiler tube (28) is round or hexagonal.
7. the continuous external-heat atmosphere protection of heating resisting metal boiler tube as claimed in claim 1 rotary furnace is characterized in that the inwall that turns round boiler tube is provided with along boiler tube axis equally distributed sine and cosine corrugated scraper plate or oblique guide scraper plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200320950U CN201053814Y (en) | 2007-06-22 | 2007-06-22 | Heat-tolerant metal furnace tube continuous external heating type protective atmosphere converter |
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| CNU2007200320950U CN201053814Y (en) | 2007-06-22 | 2007-06-22 | Heat-tolerant metal furnace tube continuous external heating type protective atmosphere converter |
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Assignee: Jiangsu Minuofu Nano Materials Co.,Ltd. Assignor: Xianyang ceramic research and Design Institute|Jia Jun|Dong Hui Contract record no.: 2011320000162 Denomination of utility model: Heat-tolerant metal furnace tube continuous external heating type protective atmosphere converter Granted publication date: 20080430 License type: Exclusive License Record date: 20110304 |
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