CN201666725U - Internal helical tube type rotary kiln - Google Patents
Internal helical tube type rotary kiln Download PDFInfo
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- CN201666725U CN201666725U CN2009200940971U CN200920094097U CN201666725U CN 201666725 U CN201666725 U CN 201666725U CN 2009200940971 U CN2009200940971 U CN 2009200940971U CN 200920094097 U CN200920094097 U CN 200920094097U CN 201666725 U CN201666725 U CN 201666725U
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- revolving drum
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Abstract
The utility model provides an internal helical tube type rotary kiln, wherein, a closed roasting space is formed in a kiln body composed of a preheating chamber, a transition cavity and a firing inflation chamber, a rotary tube is arranged therein, a hopper is disposed at the front end of the rotary tube, a discharge opening is positioned at the tail part of the rotary tube, and an internal helical guide plate is disposed on the inner wall of the rotary tube. The inner wall of the rotary tube employs an internal helical guide plate structure to realize continuous feeding and discharging, the running speed can be accurately controlled, the thickness of a material layer can be effectively maintained, so that ceramic aggregate and ceramic sand material containing carbon can form reducing atmosphere to obtain detritus type ceramic aggregate and ceramic sand by burning, and can also form oxidizing atmosphere to obtain ball-shaped ceramic aggregate and ceramic sand by burning; problems of coal dust pollution and high energy consumption of the existing rotary kiln can be solved by adopting the muffle type heating at the outside of the tube body and taking molded coal as fuel; and because the muffle firing inflation is employed, no combustion air flows in the tube body, partitioning powder added into the raw material will not be blown away, particles of the ceramic aggregate and the ceramic sand material will not bond together under the high temperature vitreous state.
Description
Technical field:
The utility model is to the improvement of existing ceramisite sintered rotary structure, and a kind of inner spiral drum-type rotary kiln especially is provided, and belongs to construction material sintering technology field.
Background technology:
The basic structure of the haydite rotary kiln of prior art is for being work durm at crust, and the thick refractory brick of interior block 150～250mm is liner, is divided into single-unit or binodal rotary kiln.Many at present is fuel with the coal dust,, is sprayed in the kiln flaming strong oxidizing atmosphere sintering-expanded haydite at discharge end by combustion tube by high pressure positive blower.Deficiency is, the flaming firing temperature is wayward, because combustion-supporting rather windy, is difficult for adding insulating powder, and temperature is high slightly, makes a part surperficial burning fusion of material and bonds agglomeratingly mutually, even is rolled into long queue, can't specializedly produce the following ultralight pottery of 5mm sand; Burn the refractory brick surface, district of expanding in the kiln and can not control the bed of material effectively for the plane, production efficiency is low; Be difficult to add the insulation material of required thickness in the kiln between refractory brick and the crust work durm, make hear rate big; Because Coal powder spray has certain pressure, makes residual air contain the bigger unfavorable environmental protection of dust.
Utility model patent " a kind of reducing flame is fired pottery sand, haydite process " (application number: 200610163236.2), proposed to fire the new method of ultralight pottery sand, haydite with reducing flame atmosphere, can specializedly produce pottery sand, solved above-mentioned rotary kiln and fired, made it form thicker brick-red oxidation shell problem with under the oxidizing atmosphere; Solved adhesion problem; Solved and specializedly to have produced granule pottery sand problem.Because placing preheating can, burnings swell in the kiln body is separate type, material needs to import after preheating can is handled to burn again and continues to burn bloated in the swell during production, so material can not continuous feed, has influenced production efficiency.
Summary of the invention:
The utility model discloses a kind of inner spiral drum-type rotary kiln, and material is the continuous feed mode, solves the shortcoming that existing rotary kiln material can not continuous feed.
Inner spiral drum-type rotary kiln of the present utility model comprises: kiln body, revolving drum, transmission mechanism and charging aperture, discharging opening, the kiln body is made of the roasting space of sealing preheating chamber, adapter cavity, the bloated chamber of burning, it is built-in with rotatable revolving drum, charging aperture is located at the front end of revolving drum, discharging opening is positioned at the afterbody of revolving drum, it is characterized in that: the revolving drum inwall is provided with the inside spin stock guide.
The inside spin stock guide of above-mentioned revolving drum is 1～4 spiral stock guide.
The height of described inside spin stock guide is 20～40% of a revolving drum diameter, and pitch is 30～50% of revolving drum diameter.
Described revolving drum is divided into the preheating zone cylindrical shell and burns expansible band cylindrical shell two parts, and the discharge end of preheating zone cylindrical shell inserts the charging aperture that burns the expansible band cylindrical shell and constitutes the relation of flexible connection; The preheating zone cylindrical shell places in the preheating chamber, burns the expansible band cylindrical shell and places in bloated chamber of burning and the adapter cavity.
The top of the bloated chamber of described burning is arch of furnace, and the bottom is the air inducing arch; Have bocca on the air inducing arch, the bottom is the combustion chamber, and the combustion chamber is built-in with track and propeller, and device has the moulded coal holder on the propeller, and the track bottom is provided with the air-breathing air channel.
Flame is drawn in bocca and enter the bloated chamber of burning by the air inducing arch during moulded coal burning, the burning expansible band shell portion in the heating rotation, flue gas enters preheating chamber by excessive flue, by waste heat flue gas heating preheating zone shell portion, the chimney eliminating of flue gas of giving up by preheating chamber.The chamber passage below is combustion-supporting air channel, and combustion-supporting burning is carried trapped orbit on the air channel.
Process burn to expand: after haydite or pottery sand raw material and insulating powder mix and stir, entered in the revolving drum by charging aperture, push ahead under the effect of inside spin stock guide, material drying, preheating, burning expand to the discharge end kiln discharge and are cooled to finished product.
By the temperature schedule requirement; moulded coal is advanced continuously by propeller; under the draft effect of air channel combustion air and chimney in the combustion chamber internal combustion; by the air inducing arch flame is concentrated on bocca again and go into to burn bloated chamber heating spiral revolving drum burning expansible band shell portion; revolving drum is evenly heated in rotation; material is burnt in tube equably is expanded into haydite or pottery sand, and flame and flue gas progressively are cooled to preheating chamber through adapter cavity, utilize waste heat flue gas heating preheating zone shell portion.Useless flue gas is got rid of by chimney.
Revolving drum inwall of the present utility model is provided with the inside spin stock guide, set its height and pitch, can make material keep accounting for a thickness of interior cumulative volume 20%～25%, control thickness and speed can form oxidation or reducing atmosphere, push ahead with can making the material stable and uniform.For through broken and for the particle that forms, as shale: reducing atmosphere can burn broken stone type haydite, pottery sand, and oxidizing atmosphere burns ball-shaped haydite, pottery sand.
Revolving drum of the present utility model can be the one single-unit, also can be discrete binodal, and material is a heat-resistance stainless steel.Cylindrical shell inside spin stock guide also plays the intensity effect that strengthens cylindrical shell, makes cylindrical shell not flexible in hot operation.
The spiral revolving drum is a single-unit, and promptly preheating zone shell portion, burning expansible band shell portion are one.
The spiral revolving drum is a binodal, and promptly preheating zone shell portion, burning expansible band barrel are distinguished independently cylindrical shell, and the discharge end of preheating zone shell portion inserts the feed end that burns the expansible band shell portion and is dynamically connected.
In spiral revolving drum revolution, with the muffle form in external heating.
Is moulded coal with the muffle form in fuel the best of external heating, secondly is combustion gas, fuel oil, electricity, raw coal etc.
The utility model not only can continuous firing pottery sand, haydite; Also can be used as dryer uses; Also can fire other powders or granule product.
The utility model utmost point effect is: the revolving drum inwall adopts inside spin stock guide structure, make input and output material continuous, the speed of service can accurately be controlled, can effectively keep thickness of feed layer, make the haydite, the pottery sand raw material that contain carbonaceous can form reducing atmosphere and burn broken stone type haydite, pottery sand, also can form oxidizing atmosphere and burn ball-shaped haydite, pottery sand; Production efficiency improves; Outside cylindrical shell,, be that fuel solves existing rotary kiln firing coal dust pollution problem, the big problem of energy consumption with the moulded coal with the heating of muffle form; Expand because muffle burns, do not have combustion air to flow in the cylindrical shell, the insulating powder that adds in the raw material can not be blown away, and haydite, pottery sand raw material are non-caked between the particle under the high temperature vitreous state.
The inside spin stock guide has height and pitch, can make material keep required thickness, control thickly can form oxidation or reducing atmosphere with speed.Can form reducing atmosphere and burn broken stone type haydite, pottery sand, also can form oxidizing atmosphere and burn ball-shaped haydite, pottery sand; Particularly can specialization fire granule pottery sand, pottery sand of firing or haydite appearance are matsurface, can improve grip of concrete and reduce floating force.
Description of drawings:
Fig. 1, single-unit combustion coal inside spin formula are produced the furnace construction schematic diagram.
Fig. 2, be Fig. 1 along the A-A profile.
Fig. 3, binodal combustion coal inside spin formula are produced the furnace construction schematic diagram.
Fig. 4, single-unit inside spin formula experimental electric furnace structure principle chart.
Fig. 5, binodal inside spin formula experimental electric furnace structure principle chart.
1, kiln body; 2, drive apparatus; 3, sprocket wheel; 4, stopping means; 5, charging aperture; 6, support roller; 7, chimney; 8, preheating zone cylindrical shell; 9, preheating chamber; 10, revolving drum; 11, adapter cavity; 12, burn the chamber of expanding; 13, burn the expansible band cylindrical shell; 14, inside spin stock guide; 15, arch of furnace; 16, discharging opening; 17, burn the haydite that expands; 18, combustion chamber; 19, air channel; 20, track; 21, moulded coal holder; 22, moulded coal; 23, air inducing arch; 24, bocca; 25, propeller; 26, flue gas trend.
The specific embodiment
Referring to accompanying drawing 1,2, single-unit combustion coal inside spin formula is produced kiln.Structure is: be built-in with revolving drum 10 at kiln body 1, the feed end of revolving drum 10 is fixed with sprocket wheel 3, sprocket wheel 3 and drive apparatus 2 join power are provided, sprocket wheel 3 both sides are connected to stopping means 4 and make revolving drum 10 axial limitings, rotate by the support roller 6 carrying revolving drums 10 that are fixed on the kiln body 1, be welded with inside spin stock guide 14 in the revolving drum 10,0.3 times of spiral stock guide 14 revolving drums 10 diameters, pitch is 0.4 times, limit material and keep certain thickness, control thick and speed and can form oxidation or reducing atmosphere, push ahead with can making the material stable and uniform.The discharge end of revolving drum 10 is provided with discharging opening 16, and the good haydite 17 that expands is through this outflow.
Revolving drum 10 can be divided into two parts, be preheating zone cylindrical shell 8 and burning expansible band cylindrical shell 13, preheating zone cylindrical shell 8 places in the preheating chamber 9, burning expansible band cylindrical shell 13 places in bloated chamber 12 of burning and the adapter cavity 11, burn the chamber 12 of expanding by arch of furnace 15, bocca 24, air inducing arch 23 is formed, burn the chamber 12 of expanding by bocca 24, air inducing arch 23 and combustion chamber 18 join, combustion chamber 18 is built-in with track 20, moulded coal holder 21, moulded coal 22 places in the moulded coal holder 21, the bottom is a bocca 24, by propeller 25 moulded coal is advanced in the combustion chamber 18, the bloated chamber 12 of burning is reached burn the temperature that expands, the natural air that the air channel 19 that is joined for 20 times by track enters is combustion-supporting.
Temperature schedule:
1. middle temperature is burnt 740～800 ℃ of specializations of scope of expanding and is fired pottery sand (haydite)
300～740 ℃ of oven dry, preheating, time 10～15min; 740～800 ℃ of constant temperature, time 10～15min; The cooling kiln discharge, time 2～5min; Generally speaking, oven dry, preheating, the burning cycle of expanding is 20～35min.
2. pottery sand (haydite) is fired in bloated 1000～1100 ℃ of specializations of scope of high temperature burning
300～1000 ℃ of oven dry, preheating, time 15～20min; 1000～1100 ℃ of constant temperature, time 10～15min; The cooling kiln discharge, time 4～5min; Generally speaking, oven dry, preheating, the burning cycle of expanding is 30～40min.
Referring to accompanying drawing 3, for binodal combustion coal inside spin formula is produced kiln.Structure with embodiment 1 different place is, preheating zone cylindrical shell 8 and to burn expansible band cylindrical shell 13 be discrete, and preheating zone cylindrical shell 8 and burn 13 sockets of expansible band cylindrical shell, promptly the discharge end of preheating zone cylindrical shell 8 inserts the feed end that burns expansible band cylindrical shell 13 and is dynamically connected.Respectively carrying shell portion links to each other with drive apparatus respectively.But each shell portion rotating speed independent regulation can be a synchronous rotational speed, also can be asynchronous rotating speed.Other all are same as embodiment 1.
Referring to accompanying drawing 4, be single-unit inside spin formula experimental electric furnace.Structure is: be built-in with revolving drum 10 at kiln body 1, the feed end of revolving drum is fixed with sprocket wheel 3, sprocket wheel 3 and drive apparatus 2 join power are provided, sprocket wheel 3 both sides are connected to stopping means 4 and make revolving drum 10 axial limitings, are rotated by the support roller 6 carrying revolving drums 10 that are fixed on the kiln body 1, are fixed with inside spin plate 14 in the revolving drum 10, spiral plate 14 highly is 0.2 times of revolving drum 10 diameters, pitch is 0.5 times, and the discharge end of revolving drum 10 is provided with discharging opening 16, and the good haydite 17 that expands flows out herein.Revolving drum 10 is divided into two parts, i.e. preheating zone cylindrical shell 8 and burn expansible band cylindrical shell 13, and preheating zone cylindrical shell 8 places in the preheating chamber 9, burns expansible band cylindrical shell 13 parts and places and burn in the chamber 12 of expanding.
Temperature schedule:
1. middle temperature is burnt 740～800 ℃ of specializations of scope of expanding and is fired pottery sand (haydite)
300～740 ℃ of oven dry, preheating, time 10～15min; 740～800 ℃ of constant temperature, time 5～10min; The cooling kiln discharge, time 2～5min; Generally speaking, oven dry, preheating, the burning cycle of expanding is 20～30min.
2. pottery sand (haydite) is fired in bloated 1000～1100 ℃ of specializations of scope of high temperature burning
300～1000 ℃ of oven dry, preheating, time 10～20min; 1000～1100 ℃ of constant temperature, time 10～15min; The cooling kiln discharge, time 4～5min; Generally speaking, oven dry, preheating, the burning cycle of expanding is 25～40min.
The burning expansible band cylindrical shell material that middle temperature is burnt the scope of expanding is the stainless steel of 1Cr18Ni9Ti and close material, and the burning expansible band shell portion material that high temperature burns bloated scope is the high-temperature heat-resistance stainless steel of Cr25Ni20Si2 and close material or the spit tube that jet plane is scrapped in utilization; The burning expansible band shell portion of experimental furnace also can be the High Alumina Porcelain pipe.
Referring to accompanying drawing 5, be binodal inside spin formula experimental electric furnace.Structure with embodiment 3 different places is, preheating zone cylindrical shell 8 and to burn expansible band cylindrical shell 13 be discrete, and preheating zone cylindrical shell 8 and burn 13 sockets of expansible band cylindrical shell, promptly the discharge end of preheating zone cylindrical shell 8 inserts the feed end that burns expansible band cylindrical shell 13 and is dynamically connected.Respectively carrying shell portion links to each other with drive apparatus 2 respectively.But each shell portion rotating speed independent regulation can be a synchronous rotational speed, also can be asynchronous rotating speed.Other all are same as embodiment 3.
Claims (5)
1. inner spiral drum-type rotary kiln, comprise kiln body (1), revolving drum (10), transmission mechanism and charging aperture (5), discharging opening (16), kiln body (1) is made of the roasting space of sealing preheating chamber (9), adapter cavity (11), the bloated chamber (12) of burning, it is built-in with rotatable revolving drum (10), revolving drum (10) is by the transmission mechanism driven rotary, charging aperture (5) is located at the front end of revolving drum (10), discharging opening (16) is positioned at the afterbody of revolving drum (10), it is characterized in that: revolving drum (10) inwall is provided with inside spin stock guide (14).
2.
According toThe described kiln of claim 1 is characterized in that: the inside spin stock guide (14) of revolving drum (10) is 1～4 spiral stock guide (14).
3.
According toClaim 1 or 2 described kilns is characterized in that: the height of inside spin stock guide (14) is 20～40% of revolving drum (a 10) diameter, and pitch is 30～50% of revolving drum (10) diameter.
4.
According toThe described kiln of claim 1 is characterized in that: revolving drum (10) is divided into preheating zone cylindrical shell (8) and burns expansible band cylindrical shell (13) two parts, and the discharge end of preheating zone cylindrical shell (8) inserts the charging aperture that burns expansible band cylindrical shell (13) and constitutes the relation of flexible connection; Preheating zone cylindrical shell (8) places in the preheating chamber (9), burns expansible band cylindrical shell (13) and places in bloated chamber (12) of burning and the adapter cavity (11).
5.
According toThe described kiln of claim 1 is characterized in that: the top of burning the chamber (12) of expanding is arch of furnace (15), and the bottom is an air inducing arch (23); Have bocca (24) on the air inducing arch (23), the bottom is combustion chamber (18), and combustion chamber (18) are built-in with track (20) and propeller (25), and propeller (25) is gone up device moulded coal holder (21), and track (20) bottom is provided with air-breathing air channel (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200940971U CN201666725U (en) | 2010-02-03 | 2010-02-03 | Internal helical tube type rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200940971U CN201666725U (en) | 2010-02-03 | 2010-02-03 | Internal helical tube type rotary kiln |
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| CN201666725U true CN201666725U (en) | 2010-12-08 |
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| CN2009200940971U Expired - Fee Related CN201666725U (en) | 2010-02-03 | 2010-02-03 | Internal helical tube type rotary kiln |
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| CN (1) | CN201666725U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121771A (en) * | 2014-07-30 | 2014-10-29 | 梁均全 | Rotary kiln for cement manufacturing |
| CN104236304A (en) * | 2014-09-29 | 2014-12-24 | 南京新中磁电技术工程有限公司 | Novel external heating type gas rotary kiln |
| CN105444154A (en) * | 2015-12-09 | 2016-03-30 | 张建臣 | Clean combustion and pyrolysis furnace for fossil fuels |
| CN105526798A (en) * | 2016-02-19 | 2016-04-27 | 重庆升上源环境治理有限公司 | Combustion kiln system |
| CN105540665A (en) * | 2016-02-04 | 2016-05-04 | 株洲安特新材料科技有限公司 | High-temperature reaction furnace for producing sodium antimonate by sodium pyroantimonate dehydration |
| CN106197026A (en) * | 2016-08-26 | 2016-12-07 | 洛阳麦德陶粒有限公司 | A kind of haydite heater |
| CN106643128A (en) * | 2016-10-17 | 2017-05-10 | 中国石油化工股份有限公司 | Hearth structure for gas rotary furnace |
| CN107487994A (en) * | 2017-08-19 | 2017-12-19 | 安徽卓煌机械设备有限公司 | A kind of chamotte cooler waste heat recovery rotary kiln oxygen system |
| CN112146432A (en) * | 2019-06-26 | 2020-12-29 | 康荷 | Electric heating kiln furnace body structure with built-in spiral track propelling groove |
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2010
- 2010-02-03 CN CN2009200940971U patent/CN201666725U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104121771B (en) * | 2014-07-30 | 2016-01-20 | 梁均全 | Rotary kiln prepared by a kind of cement |
| CN104121771A (en) * | 2014-07-30 | 2014-10-29 | 梁均全 | Rotary kiln for cement manufacturing |
| CN104236304B (en) * | 2014-09-29 | 2016-11-30 | 南京新中磁电技术工程有限公司 | A kind of Novel external heat type combustion gas rotary kiln |
| CN104236304A (en) * | 2014-09-29 | 2014-12-24 | 南京新中磁电技术工程有限公司 | Novel external heating type gas rotary kiln |
| CN105444154A (en) * | 2015-12-09 | 2016-03-30 | 张建臣 | Clean combustion and pyrolysis furnace for fossil fuels |
| CN105540665A (en) * | 2016-02-04 | 2016-05-04 | 株洲安特新材料科技有限公司 | High-temperature reaction furnace for producing sodium antimonate by sodium pyroantimonate dehydration |
| CN105526798A (en) * | 2016-02-19 | 2016-04-27 | 重庆升上源环境治理有限公司 | Combustion kiln system |
| CN106197026A (en) * | 2016-08-26 | 2016-12-07 | 洛阳麦德陶粒有限公司 | A kind of haydite heater |
| CN106643128A (en) * | 2016-10-17 | 2017-05-10 | 中国石油化工股份有限公司 | Hearth structure for gas rotary furnace |
| CN107487994A (en) * | 2017-08-19 | 2017-12-19 | 安徽卓煌机械设备有限公司 | A kind of chamotte cooler waste heat recovery rotary kiln oxygen system |
| CN107487994B (en) * | 2017-08-19 | 2019-12-10 | 福建省永定闽福建材有限公司 | Clinker cooler waste heat recovery rotary kiln oxygen supply system |
| CN112146432A (en) * | 2019-06-26 | 2020-12-29 | 康荷 | Electric heating kiln furnace body structure with built-in spiral track propelling groove |
| CN112146432B (en) * | 2019-06-26 | 2023-05-02 | 康荷 | Electric heating kiln body structure with built-in spiral track propulsion groove |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20120203 |