CN201246955Y - High temperature nitridation channel furnace - Google Patents
High temperature nitridation channel furnace Download PDFInfo
- Publication number
- CN201246955Y CN201246955Y CNU2008201084786U CN200820108478U CN201246955Y CN 201246955 Y CN201246955 Y CN 201246955Y CN U2008201084786 U CNU2008201084786 U CN U2008201084786U CN 200820108478 U CN200820108478 U CN 200820108478U CN 201246955 Y CN201246955 Y CN 201246955Y
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Abstract
The utility model relates to a high-temperature nitriding tunnel furnace, which belongs to the technical field of firing equipment, and comprises a pneumatic feed mechanism, a feeding pipe, a preheating zone on the front portion, a high-temperature heating area on the middle portion, and a cooling area, a discharging pipe and a pneumatic discharging mechanism on the rear portion, a whole-sealing furnace casing, heating elements which are suspended on both sides of a furnace body, a charging-discharging sliding push pedal, pneumatic charging-discharging mechanisms on both ends of the furnace body, a furnace cover hydraulic lifting mechanism, a multi-point air inlet pipe of the furnace body, a furnace bottom, a furnace door air outlet pipe, and a vacuum pipeline which is connected with the vacuum pump. The utility model has the advantages that the integral sealing property of the furnace body is excellent, a multi-point air inlet mode is adopted in the furnace, atmosphere of each point in the furnace is even, nitriding effects of products are excellent, charging and discharging of the furnace door adopt pneumatic propulsive devices, a slide plate structure is arranged in the furnace, charging and discharging are stable and reliable, and the security is high, labor intensity is low, an air outlet is provided with a water cooling system, the temperature of air outlet is low, an automatic blow-off valve is provided to prevent pressure in the furnace to be over high to damage the furnace, and the high-temperature nitriding tunnel furnace can be used to continuously produce, which has high production efficiency.
Description
Technical field
The utility model belongs to the calcination equipment technical field, and a kind of high-temperature ammonolysis tunnel stove is provided especially, but is applicable to refractory material, pottery, electronic material and components and parts quantity-produced agglomerating plant under high temperature, nitrogen atmosphere.
Background technology
Silicon nitride goods, other carbonaceous article, carbide, nitride and metallic material be sintering at high temperature, need carry out in vacuum and oxygen-free atmosphere in general.Existing agglomerating plant high-temperature ammonolysis stove sintering temperature generally is lower than 1550 ℃, and whole furnace sealing is bad, and it is clean that furnace air is difficult for expulsion, and furnace atmosphere is inhomogeneous, and the goods nitrogenize is insufficient.Though and the intermediate frequency furnace temperature that adopts is higher, can not work continuously, production efficiency is low.For addressing the above problem, be at first to the improvement of the method, with vavuum pump furnace air is pumped, on furnace binding, consider positions such as furnace roof fire door are added the sealing of flange rubber bar, good sealing effect.Arrange a plurality of admissions on the body of heater, equipment is in slight positive pressure state always, the each point nitrogen atmosphere evenly, fully in the stove, be provided with air inlet gas curtain structure at feed inlet and outlet, at high temperature guarantee that air can not enter in the stove during continuous feeding and discharging, so just reached at high temperature the goods effect of nitrogenize fully.
Summary of the invention
The purpose of this utility model is to provide a kind of high-temperature ammonolysis tunnel stove, overcome existing agglomerating plant high-temperature ammonolysis stove sintering temperature and generally be lower than 1550 ℃, whole furnace sealing is bad, and it is clean that furnace air is difficult for expulsion, furnace atmosphere is inhomogeneous, the inadequate problem of goods nitrogenize; And realized working continuously.
The high-temperature ammonolysis continuous tunnel furnace that the utility model provides, comprise the high temperature thermal treatment zone, the cooling area that is positioned at the rear portion, discharge nozzle, pneumatic discharging mechanism, the hermetically sealed furnace shell that are positioned at anterior pneumatic feeding mechanism, feed pipe, preheating zone, are positioned at the middle part, hang heating element heater, input and output material slip push pedal in the body of heater both sides; The bell hydraulicefficiency elevation structure; Body of heater multiple spot air inlet pipeline; The furnace bottom outlet pipe; The vacuum line that links to each other with vavuum pump.Whole furnace shell 23 is an all-sealed structure, and furnace shell is provided with vacuum line 26, and this vacuum line one end is connected with vavuum pump; Furnace shell is provided with copper electrode and reaches by electrode hole that is connected with thermo electric material in going into outward and sealed rubber ring 12; Bell 11 is provided with venting 17 and thermocouple 16; Be provided with gas outlet 38, manual vent valve 39, automatic blow off valve valve air relief 9 in the furnace shell bottom, a plurality of air inlet pipelines arranged at feed and exhaust tube, bell and furnace shell sidewall; Bell, furnace shell sidewall, feed and exhaust tube, electrode, furnace bottom blowdown piping all have the recirculated water cooling; The slide plate 36 that bottom of furnace body and feed and exhaust tube bottom is laid track 37 and can be advanced along track, the track bottom has insulation material, furnace shell sidewall that vacuum line 26, pressure vacuum gauge 10 and flowmeter 8 are arranged, and rotatable fire door is arranged on the feed and exhaust tube; Propulsion cylinder 1,25 is arranged on the feeding-discharging mechanism, the apical axis 24,27 that can make front-rear reciprocation movement is housed on this propulsion cylinder, vehicle guide 5,29 and dolly 2,21 are arranged on the cylinder support, and feed pipe 4 and discharge nozzle 18 outside weldings have ring flange 6,28, and fire door 3,20 has tight screw of rope and flange; There is air inlet pipe 7,19 at feed and exhaust tube 4,18 mouth of pipe positions.Described discharge nozzle 18 structures and feed pipe structure are similar, are the propulsion cylinder structure; The discharging fire door is also identical with the feed furnace door, is the flange seal structure.
Body of heater described in the utility model is the multiple spot air inlet, comprises 3 air inlets 32 of furnace roof, 8 air inlets 22 of sidewall and 7,19 two air inlets of the input and output material mouth of pipe, and wherein the air inlet of the input and output material mouth of pipe is the gas curtain air intake structure, and institute's air inlet body is a nitrogen.
Continuous tunnel furnace bell described in the utility model has temperature-control heat couple 16, anti-riot mouthful 17 and furnace cover lifting mechanism 15, and wherein furnace cover lifting mechanism is hydraulic control; There are manual vent valve 39, automatic blow off valve valve air relief 9 in furnace bottom gas outlet 38.
Feed pipe and discharge nozzle are welded by steel plate.Build by laying bricks or stones by refractory material around preheating zone and the cooling area burner hearth, and heating element heater is not installed.Cover insulation material in the burner hearth sidewall of the high temperature thermal treatment zone and the top cover, at the inboard lifting of burner hearth electrical heating elements, the heating element heater extraction electrode is a copper electrode, and temperature-control heat couple is installed at the top.
Furnace shell sidewall described in the utility model, bell, feed and exhaust tube and furnace bottom are given vent to anger all the water-cooled pipeline, and bus-bar 13 is received in the unification of water-cooled pipeline; Bus-bar is provided with water pressure gauge 14.
Whole bottom of furnace body is laid track; Feed pipe and discharge nozzle outside weldings have ring flange, and the rubber bar groove is arranged on the ring flange, and rotatable fire door is arranged at top.Feed pipe has propulsion cylinder outdoors, and this propulsion cylinder comprises that front end can stretch into the apical axis that feed pipe also can be made front-rear reciprocation movement, guide rail and dolly is arranged, the short rail that has the track bottom described feed pipe to connect on the dolly chassis on the cylinder support.Dolly can move forward and backward along rack-mount guide rail; Slide plate is housed on the dolly, adorns material on the slide plate, propulsion cylinder can push feed pipe with slide plate on the dolly and material.Discharge nozzle in the left side of continuous tunnel furnace has horizontal ejecting mechanism outdoors, the slide plate and the material that eject discharge nozzle can be shifted onto on the dolly.
Also be provided with vacuum line on the furnace shell of high-temperature ammonolysis continuous tunnel furnace described in the utility model, this vacuum line one end is connected with vavuum pump, can be before producing continuously with stove in air get rid of totally.Furnace shell is provided with copper electrode and reaches by the electrode hole and the sealed rubber ring that are connected with thermo electric material in going into outward.Bell is provided with venting and temperature-control heat couple; The gas outlet of furnace shell bottom is provided with manual vent valve and automatic blow off valve valve air relief, and automatic blow off valve valve air relief is opened automatically after furnace pressure surpasses setting pressure.At feed and exhaust tube, bell and furnace shell sidewall a plurality of air inlet pipelines are arranged, to guarantee that each point nitrogen is evenly abundant in the stove.Bell, furnace shell sidewall, feed and exhaust tube, electrode, furnace bottom blowdown piping all have the recirculated water cooling.
Advantage is that this stove bell adopts flange, rubber bar sealing, and sidewall, furnace roof, feed and exhaust tube, electrode all have water-cooling system, and the body of heater overall sealing performance is good.Adopt the multiple spot intake method in the stove, furnace roof, furnace sidewall, feed and exhaust tube etc. all have admission, and each point atmosphere is even in the stove, and the goods nitriding result is good.Input and output material adopts pneumatic propulsion cylinder, is skateboard in the stove, takes on the reliable and stable security performance height of material, and labour intensity is low.There is water-cooling system the gas outlet, and air outlet temperature is low, can not damage human body; And automatic blow off valve valve air relief is arranged, and prevent that furnace pressure is too high, cause device damage; Equipment can be produced continuously, the production efficiency height.
Description of drawings
Fig. 1 is the general structure schematic diagram of the utility model high-temperature ammonolysis continuous tunnel furnace.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the cutaway view of the utility model high-temperature ammonolysis continuous tunnel furnace
Wherein, propulsion cylinder 1,25, dolly 2,21, apical axis 24,27 vehicle guides 5,29 are arranged on the pneumatic feeding-discharging mechanism; Furnace shell 23, on fire door 3,20, feed and exhaust tube 4,18, air inlet pipe 7,19,22, flowmeter 8, pressure vacuum gauge 10, copper electrode 12, bus-bar 13, water pressure gauge 14, vacuum line 26, sealing flange 6,28,30 gas outlets 38, manually vent valve 39, automatic blow off valve valve air relief 9 are arranged; Bell 11, on hydraulicefficiency elevation structure 15, temperature-control heat couple 16, anti-riot mouthful 17,3 air inlets 32 of furnace roof are installed; There are preheating zone 31, high-temperature region 33, electrical heating elements 34, cooling area 35, slide plate 36, track 37 in body of heater inside.
The specific embodiment
Fig. 1, Fig. 2, Fig. 3, be a kind of specific embodiment of the present invention.
Nitrogenize tunnel stove described in the utility model comprises: the furnace shell right side is pneumatic feeding mechanism, its underpart framework is by the square steel welding production, framework upper is installed propulsion cylinder 1, the apical axis 24 that propulsion cylinder stretches out can be sent the material on slide plate on the Material feeding trolley 2 36 and the slide plate into feed pipe 4, feed pipe and furnace shell adopt Type of Welding, and air inlet pipe 7 and water collar are arranged on it, and the charging mouth of pipe is welded with ring flange 6, the rubber bar groove is arranged on the ring flange, Material feeding trolley be provided with can with the short rail of feed pipe orbital docking.The furnace shell right side is pneumatic discharging mechanism, and pneumatic discharging mechanism and pneumatic feeding mechanism are similar.The tight screw of band rope on the input and output material fire door 3,20.Be furnished with pressure vacuum gauge 10 and flowmeter 8 on the furnace shell.Whole furnace shell 23 usefulness steel plates are welded, and bell and bottom furnace shell all have ring flange, and the groove that rubber bar is installed is arranged on the furnace shell ring flange 30.Furnace shell sidewall, bell, feed and exhaust tube, electrode all have the water-cooled pipeline, to avoid the rubber bar high temperature ageing.Top cover is provided with temperature-control heat couple 16 and anti-riot mouthful 17 and hydraulicefficiency elevation structure 15, bell can be risen with hydraulic pressure when needing repairing in the stove, and furnace roof, sidewall, feed and exhaust tube all have air inlet pipe simultaneously.The furnace shell sidewall is provided with is convenient to electrode by the electrode hole 12 that is connected with heating in going into outward, and water cooling tube is arranged on the copper electrode, and sidewall position has on the upper side welded vacuum pipe 26, and filter is arranged on the vacuum pipe, and vacuum pipe links to each other with vavuum pump.Gas outlet 38 is arranged at furnace shell bottom, the water-cooled of giving vent to anger pipeline, manually vent valve 39, automatic blow off valve valve air relief 9.Three districts of part in the furnace shell comprise the 31 high temperature thermals treatment zone 33, preheating zone and cooling area 35, and the preheating zone leans on the heat of high-temperature region radiation with the material preheating; Material enters the high-temperature region heating, and electrical heating elements 34 is hung in the both sides, high-temperature region, the roof of the furnace covering insulation material, and position, center, high-temperature region is provided with temperature-control heat couple; Material enters discharge nozzle after the cooling area cooling, last discharging mechanism is shifted slide plate and material outside the stove onto.Inlet and outlet water water cooling tube on the whole body of heater is all received on the bus-bar 13.Described heating 34 is vertically hung in the both sides, high-temperature region, and its connected mode can adopt star and delta connection.
The course of work: close fire door and locking.Start vavuum pump, furnace pressure is extracted into end vacuum after, close vavuum pump, and in stove inflated with nitrogen, reach pressure-fired up to furnace pressure, open manual vent valve, a small amount of venting makes furnace atmosphere keep fresh nitrogen atmosphere uniformly always.Open each inlet valve on the bus-bar, check the backwater situation, after all are normal, connect power supply and send in stove and establishes the beginning by cable and heat up, the heating curve by process stipulation in the temperature-rise period heats up, electric furnace is heated to operating temperature after.Open the charging fire door by process curve feeding in stove, just begin the production process that moves in circles that an endfeed one brings out material subsequently.Technical process finishes, but the cooling of temperature follow procedure so just will sintering, the goods nitrogenize of nitrogenize up to room temperature in the stove.
Claims (8)
1, a kind of high-temperature ammonolysis continuous tunnel furnace, it is characterized in that, comprise the high temperature thermal treatment zone, the cooling area that is positioned at the rear portion, discharge nozzle, pneumatic discharging mechanism, the hermetically sealed furnace shell that are positioned at anterior pneumatic feeding mechanism, feed pipe, preheating zone, are positioned at the middle part, hang heating element heater, input and output material slip push pedal in the body of heater both sides; The bell hydraulicefficiency elevation structure; Body of heater multiple spot air inlet pipeline; The furnace bottom outlet pipe; The vacuum line that links to each other with vavuum pump; Whole furnace shell (23) is an all-sealed structure, and furnace shell is provided with vacuum line (26), and this vacuum line one end is connected with vavuum pump; Furnace shell is provided with copper electrode and reaches by electrode hole that is connected with thermo electric material in going into outward and sealed rubber ring (12); Bell (11) is provided with venting (17) and thermocouple (16); Be provided with gas outlet (38), manual vent valve (39), automatic blow off valve valve air relief (9) in the furnace shell bottom, a plurality of air inlet pipelines arranged at feed and exhaust tube, bell and furnace shell sidewall; Bell, furnace shell sidewall, feed and exhaust tube, electrode, furnace bottom blowdown piping all have the recirculated water cooling; There are insulation material, furnace shell sidewall that vacuum line (26), pressure vacuum gauge (10) and flowmeter (8) are arranged bottom the slide plate (36) that bottom of furnace body and feed and exhaust tube bottom is laid track (37) and can be advanced along track, track, rotatable fire door is arranged on the feed and exhaust tube; Propulsion cylinder (1,25) is arranged on the feeding-discharging mechanism, the apical axis (24,27) that can make front-rear reciprocation movement is housed on this propulsion cylinder, vehicle guide (5,29) and dolly (2,21) are arranged on the cylinder support, feed pipe (4) and discharge nozzle (18) outside weldings have ring flange (6,28), and fire door (3,20) has tight screw of rope and flange; There is air inlet pipe (7,19) at feed and exhaust tube (4,18) mouth of pipe position.
2, according to the described high-temperature ammonolysis continuous tunnel furnace of claim 1, it is characterized in that, described body of heater is the multiple spot air inlet, comprise 3 air inlets of furnace roof (32), 8 air inlets of sidewall (22) and 2 air inlets of the input and output material mouth of pipe (7,19), wherein the air inlet of the input and output material mouth of pipe is the gas curtain air intake structure, and institute's air inlet body is a nitrogen.
According to the described high-temperature ammonolysis continuous tunnel furnace of claim 1, it is characterized in that 3, described continuous tunnel furnace bell has temperature-control heat couple (16), anti-riot mouthful of (17) and furnace cover lifting mechanism (15), wherein furnace cover lifting mechanism is hydraulic control; There are manual vent valve (39), automatic blow off valve valve air relief (9) in furnace bottom gas outlet (38).
According to the described high-temperature ammonolysis continuous tunnel furnace of claim 1, it is characterized in that 4, feed pipe (4) and discharge nozzle (18) are welded by steel plate; Built by laying bricks or stones by refractory material around preheating zone (31) and cooling area (35) burner hearth, cover insulation material in the burner hearth sidewall of high-temperature region (33) and the top cover, at the inboard lifting of burner hearth electrical heating elements (34), the heating element heater extraction electrode is copper electrode (12).
According to the described high-temperature ammonolysis continuous tunnel furnace of claim 1, it is characterized in that 5, described furnace shell sidewall, bell, feed and exhaust tube and furnace bottom are given vent to anger all the water-cooled pipeline, bus-bar (13) is received in the unification of water-cooled pipeline; Bus-bar is provided with water pressure gauge (14).
According to the described high-temperature ammonolysis continuous tunnel furnace of claim 1, it is characterized in that 6, ring flange has the rubber bar groove on (6,28,30).
According to the described high-temperature ammonolysis continuous tunnel furnace of claim 1, it is characterized in that 7, described discharge nozzle (18) structure and feed pipe structure are similar, are the propulsion cylinder structure; The discharging fire door is also identical with the feed furnace door, is the flange seal structure.
According to the described high-temperature ammonolysis continuous tunnel furnace of claim 1, it is characterized in that 8, the short rail that has the track bottom described feed pipe to connect on the dolly chassis is equipped with slide plate on the dolly, adorn material on the slide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201084786U CN201246955Y (en) | 2008-06-05 | 2008-06-05 | High temperature nitridation channel furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201084786U CN201246955Y (en) | 2008-06-05 | 2008-06-05 | High temperature nitridation channel furnace |
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| Publication Number | Publication Date |
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| CN201246955Y true CN201246955Y (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201084786U Expired - Fee Related CN201246955Y (en) | 2008-06-05 | 2008-06-05 | High temperature nitridation channel furnace |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230728A (en) * | 2011-04-22 | 2011-11-02 | 孝感市汉达电子元件有限责任公司 | Novel horizontal type atmosphere furnace |
| CN102243015A (en) * | 2010-05-14 | 2011-11-16 | 丹江口弘源碳化硅有限责任公司 | Energy-saving electrical burning nitriding furnace |
| CN102425943A (en) * | 2011-11-21 | 2012-04-25 | 山东博大集团有限公司 | Totally-enclosed nitrogen protection boat pushing type tunnel furnace |
| CN102914146A (en) * | 2012-11-01 | 2013-02-06 | 中国钢研科技集团有限公司 | Ultrahigh temperature nitriding tunnel kiln |
| CN107421345A (en) * | 2017-08-01 | 2017-12-01 | 河南易成新能源股份有限公司 | Graphite cathode material high-temperature heat treatment explosion-protection equipment and method |
| CN108020081A (en) * | 2017-11-30 | 2018-05-11 | 新冶高科技集团有限公司 | A kind of superhigh temperature nitrogenizes continuous tunnel stove |
| CN111518993A (en) * | 2020-04-23 | 2020-08-11 | 陈增法 | Reciprocating type heat treatment equipment |
-
2008
- 2008-06-05 CN CNU2008201084786U patent/CN201246955Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243015A (en) * | 2010-05-14 | 2011-11-16 | 丹江口弘源碳化硅有限责任公司 | Energy-saving electrical burning nitriding furnace |
| CN102230728A (en) * | 2011-04-22 | 2011-11-02 | 孝感市汉达电子元件有限责任公司 | Novel horizontal type atmosphere furnace |
| CN102425943A (en) * | 2011-11-21 | 2012-04-25 | 山东博大集团有限公司 | Totally-enclosed nitrogen protection boat pushing type tunnel furnace |
| CN102914146A (en) * | 2012-11-01 | 2013-02-06 | 中国钢研科技集团有限公司 | Ultrahigh temperature nitriding tunnel kiln |
| CN107421345A (en) * | 2017-08-01 | 2017-12-01 | 河南易成新能源股份有限公司 | Graphite cathode material high-temperature heat treatment explosion-protection equipment and method |
| CN108020081A (en) * | 2017-11-30 | 2018-05-11 | 新冶高科技集团有限公司 | A kind of superhigh temperature nitrogenizes continuous tunnel stove |
| CN111518993A (en) * | 2020-04-23 | 2020-08-11 | 陈增法 | Reciprocating type heat treatment equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: New Metallurgy Hi.-Tech. Group Co., Ltd. Assignor: Central Iron & Steel Research Institute Contract record no.: 2011990000155 Denomination of utility model: Ultrahigh temperature nitriding tunnel kiln Granted publication date: 20090527 License type: Exclusive License Record date: 20110315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20160605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |