CN201653120U - Pre-heated rotary kiln with internal spiral cylinder - Google Patents
Pre-heated rotary kiln with internal spiral cylinder Download PDFInfo
- Publication number
- CN201653120U CN201653120U CN2009200948210U CN200920094821U CN201653120U CN 201653120 U CN201653120 U CN 201653120U CN 2009200948210 U CN2009200948210 U CN 2009200948210U CN 200920094821 U CN200920094821 U CN 200920094821U CN 201653120 U CN201653120 U CN 201653120U
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- rotary kiln
- spiral
- cylinder
- preheating
- spiral tube
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Abstract
The utility model provides a pre-heated rotary kiln with an internal spiral cylinder; a spiral rotary cylinder with an internal spiral stock guide plate arranged internally is fixedly connected in a pre-heated rotary kiln body, and is inserted in and connected with a sintering and expanding rotary kiln body; an internal muffle cylinder is fixedly connected in the spiral cylinder and is placed in a high-temperature preheating end; and the spiral stock guide has certain height and pitch and can act together with the internal muffle cylinder to enable the preheating material to maintain the thickness accounting for 20 to 25 percent of the bulk volume of the interior of the cylinder, and the preheating zone of the pre-heated rotary kiln can be shortened by at least one third to a half of the length compared with the preheating zone of the rotary kiln in the prior art. Therefore, the kiln has the advantages of light weight, small occupied area, high production efficiency, energy conservation and environmental protection, is in the reducing atmosphere in the sintering and expanding process, causing ceramsite to be sintered expansion and to have light weight and high strength.
Description
Technical field
It is that inwall is fixed with the inside spin stock guide and burns the rotary kiln that the rotary kiln body insertion of expanding is joined that the utility model relates to preheating rotary kiln body, especially provides a kind of inside spin tube pre-heated kiln, belongs to construction material sintering equipment field.
Background technology
The basic structure of existing haydite rotary kiln is for being work durm at crust, and it is liner that preheating rotary kiln body and burning expansible band rotary kiln body inwall are the thick refractory brick of 100～250mm, is divided into single-unit or binodal rotary kiln.Deficiency is, the heat radiation of preheating rotary kiln body is big, and cylindrical shell is long, and weight is big, and the bed of material is thin, and the basis occupation of land is bigger.
Summary of the invention
The utility model provides a kind of inside spin tube pre-heated kiln, and purpose is improved preheating zone rotary kiln body portion on existing rotary kiln basis, make to be preheated material and can to form reducing atmosphere, haydite swelling is effective, and heat utilization efficiency is big, production efficiency improves, and is energy-conservation, and environment protecting improves.
The utility model purpose is achieved in that by smoke-box, feeding mouth, preheating zone rotary kiln body, burning expansible band rotary kiln body, haydite storehouse, drive apparatus etc. to be formed, it is characterized in that: be set with the spiral tube in the preheating rotary kiln body, establish in the spiral tube inside spin stock guide and with burn expansible band rotary kiln body and insert and join.
Muffle tube in being connected in the spiral tube places the high temperature preheating end.
The spiral tube joins by heat-insulation layer and heat-insulation layer shell.
Heat-insulation layer is built-in with steel supporting component, and spiral tube and heat-insulation layer shell are coupled as one.
The spiral tube inwall inside spin stock guide that is connected is 1～4 spiral.
The inside spin stock guide that spiral tube inwall is connected is 1～4 spiral.
Inside spin stock guide height is 5%～40% of a spiral tube diameter, and pitch is 20%～50% of spiral tube diameter.
The utility model utmost point effect is:
1. by inside spin stock guide and the acting in conjunction of interior muffle tube, can make pre-thermal material keep accounting for a thickness of interior total measurement (volume) 20%～25%, compare with the preheating zone of prior art rotary kiln and can shorten at least 1/2～1/3 length, the kiln body weight is light, floor space is little;
2. form the muffle effect of the helical cavity of base closed at the high temperature preheating end by interior muffle tube that is connected in the spiral tube and inside spin stock guide, material is anaerobic condition in warm, thereby make pre-thermal material form reducing atmosphere, make that haydite swelling speeds up, density reduces, quality improves, the comparable existing rotary kiln of haydite swelling effect improves a class; Heat utilization efficiency is big, production efficiency is high;
3. because the effect of inside spin stock guide can be controlled the charging rate of preheating zone effectively and then control the flow of expecting effectively, make burning expansible band haydite burning expand even;
4. owing to the function of height of inside spin stock guide, can stop the combustion air of burner effectively, the insulating powder that can reduce in the material is blown away, and then alleviates the bonding of burning between the bloated particle;
5. owing to the effect of inside spin stock guide, the flue gas hot-fluid forms curvilinear motion in the preheating zone, can stop the rectilinear motion of the flue gas that burns the chamber of expanding effectively, to reach the effect of energy-saving and environmental protection;
6. the inside spin stock guide also plays the intensity effect that strengthens cylindrical shell, makes cylindrical shell not flexible in hot operation;
7. preheating rotary kiln body does not use refractory brick, and uses flame-proof thermal insulation material, and the kiln body weight is alleviated greatly;
8. the utility model also can be used for drying, preheating, the roasting of other materials except that the drying that is used for haydite, preheating, burning expand.
Description of drawings:
Accompanying drawing 1 is for being the utility model structure principle chart.
1, feeding mouth; 2, flue; 3, smoke-box; 4, chimney; 5, elevating hopper; 6, preheating zone rotary kiln body; 7, spiral tube; 8, drive; 9, inside spin stock guide; 10, heat-insulation layer; 11, support roller; 12, heat-insulation layer shell; 13, the material of pining in advance; 14, burn expansible band rotary kiln body; 15, shell; 16, refractory brick; 17, burner; 18, interior muffle tube; 19, burn the haydite that expands; 20, haydite storehouse; 21, steel supporting component; 22, kiln body support roller and stopping means; 23, drive apparatus.
The specific embodiment
Embodiment
As shown in drawings: form by smoke-box 2, feeding mouth 1, preheating zone rotary kiln body 6, burning expansible band rotary kiln body 14, haydite storehouse 20, drive apparatus 23..
Be fixed with spiral tube 7 in the preheating zone rotary kiln body 6, spiral tube 7 and burning expansible band rotary kiln body 15 insert and join.
Preheating zone rotary kiln body 6 is joined by the spiral tube 7 and the heat-insulation layer shell 12 of the inside spin stock guide 9 that is connected, and is heat-insulation layer 10 in the middle of it.
Heat-insulation layer 10 is built-in with steel supporting component 21, and spiral tube 7 and heat-insulation layer shell 12 are coupled as one.
Heat-insulation layer shell 12 is connected to support roller 11 and drive 8, support roller 11 and kiln body support roller and stopping means 22 load capacity that joins, drive 8 and drive apparatus 23 transferring power of joining.
The inside spin stock guide 9 that spiral tube 7 inwalls are connected is 1～4 spiral.The inside spin stock guide has height and pitch, can make material keep accounting for a thickness of interior total measurement (volume) 20%～25%, can produce the series of active effect.
Burn expansible band rotary kiln body 14 and be made up of the refractory brick 16 of shell 15 made of iron and interior block, shell 12 is connected to support roller 11 and drive 8, support roller 11 and kiln body support roller and stopping means 22 load capacity that joins, drive 8 and drive apparatus 23 transferring power of joining.
The left end of preheating zone rotary kiln body 6 is that feeding mouth 1 and elevating hopper 5, smoke-box 3 join, and useless flue gas is got rid of by flue 2, chimney 4.Burning expansible band rotary kiln body 14 right-hand members is discharging opening and haydite storehouse 20, and haydite is exported by conveyer, and burner 17 is crossed windshield and placed in burning expansible band rotary kiln body 14 combustion chambers near on the axis of the haydite port of export.
Preheating and the bloated technical process summary of burning: in rotary kiln, it is the convection heat transfer' heat-transfer by convection process that flow direction of material (arrow direction) flows to the flame hot-fluid, and the waste heat flue gas after the drying of raw material, preheating institute calorific requirement are expanded by the haydite burning provides.
To burn haydites of book structure or pottery sand is example: after haydite or pottery sand raw material and a small amount of insulating powder mix and stir; go in the spiral tube 7 by the elevating hopper 5 of feeding mouth 1; the material of pining in advance 13 advances forward in the chamber of inside spin stock guide 9; about 300～the 500mm of thickness of feed layer; Rapid Thermal conduction by thickness of feed layer and inside spin stock guide; the material drying; be preheated to preheating zone rotary kiln body 6 high temperature preheating ends; by the muffle effect of the interior muffle tube 18 that is connected in the spiral tube 7 and inside spin stock guide 9 in the helical cavity that forms base closed; material is anaerobic condition in warm; and the pre-thermal material that forms reducing atmosphere goes into to burn in the expansible band rotary kiln body 14; the material that is preheated is sharply heated in burning expansible band 14 combustion chambers makes the mass expanded of preheating become haydite or pottery sand 19 to discharge end to export in the haydite storehouse 20, is cooled to finished product by haydite conveying equipment output kiln.At present, thermal source is many to be fuel with the coal dust, is supplied with by coal dust work jar at the kiln hood end, through conveying worm input airduct, is squeezed in the kiln by high pressure positive blower, forms at the rotary kiln head end and burns expansible band.
The curved formula of hot flue gas after burn expanding is passed to the kiln tail, kiln exit gas through the smoke-box dedusting after flue enters atmosphere by chimney.
Temperature schedule:
1. middle temperature is burnt 740～800 ℃ of baking ceramsites of scope (pottery sand) that expand
300～740 ℃ of oven dry, preheating, time 10～15min; 740～800 ℃ are burnt the constant temperature that expands, time 10～15min; The cooling kiln discharge, time 2～5min; Generally speaking, oven dry, preheating, the burning cycle of expanding is 20～35min.
2. high temperature burns 1000～1200 ℃ of baking ceramsites of scope (pottery sand) that expand
300～1000 ℃ of oven dry, preheating, time 15～20min; 1000～1200 ℃ are burnt the constant temperature that expands, time 10～15min; The cooling kiln discharge, time 4～5min; Generally speaking, oven dry, preheating, the burning cycle of expanding is 30～40min.
Claims (6)
1. pre-heated kiln of inside spin tube, form by smoke-box (3), feeding mouth (1), preheating zone rotary kiln body (6), burning expansible band rotary kiln body (14), haydite storehouse (20), drive apparatus (23), it is characterized in that: be set with spiral tube (7) in the preheating rotary kiln body (6), establish in the spiral tube (7) inside spin stock guide (9) and with burn expansible band rotary kiln body (14) and insert and join.
2. kiln according to claim 1 is characterized in that: muffle tube (18) in being provided with in spiral tube (7).
3. kiln according to claim 1 is characterized in that: spiral tube (7) joins by heat-insulation layer (10) and heat-insulation layer shell (12).
4. kiln according to claim 3 is characterized in that: heat-insulation layer (10) is built-in with steel supporting component (21), and spiral tube (7) and heat-insulation layer shell (12) are coupled as one.
5. kiln according to claim 1 and 2 is characterized in that: the inside spin stock guide (9) that spiral tube (7) inwall is connected is 1～4 spiral.
6. kiln according to claim 1 and 2 is characterized in that: inside spin stock guide (9) highly is 5%～40% of spiral tube (7) diameter, and pitch is 20%～50% of spiral tube (7) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200948210U CN201653120U (en) | 2009-11-27 | 2009-11-27 | Pre-heated rotary kiln with internal spiral cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200948210U CN201653120U (en) | 2009-11-27 | 2009-11-27 | Pre-heated rotary kiln with internal spiral cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653120U true CN201653120U (en) | 2010-11-24 |
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ID=43118361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200948210U Expired - Lifetime CN201653120U (en) | 2009-11-27 | 2009-11-27 | Pre-heated rotary kiln with internal spiral cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653120U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557691A (en) * | 2013-11-22 | 2014-02-05 | 黄石市建材节能设备总厂 | Environment-friendly tandem type drying and calcining kiln |
| CN103575095A (en) * | 2013-11-14 | 2014-02-12 | 山东恒远利废技术发展有限公司 | Cascading type rotary kiln |
| CN106323012A (en) * | 2015-07-09 | 2017-01-11 | 武汉艾蒙窑炉技术有限公司 | Rotary preheater and rotary kiln |
| CN108645206A (en) * | 2018-05-23 | 2018-10-12 | 山东京博装备制造安装有限公司 | A kind of progressive rotary kiln |
-
2009
- 2009-11-27 CN CN2009200948210U patent/CN201653120U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575095A (en) * | 2013-11-14 | 2014-02-12 | 山东恒远利废技术发展有限公司 | Cascading type rotary kiln |
| CN103575095B (en) * | 2013-11-14 | 2015-07-22 | 山东恒远利废技术发展有限公司 | Cascading type rotary kiln |
| CN103557691A (en) * | 2013-11-22 | 2014-02-05 | 黄石市建材节能设备总厂 | Environment-friendly tandem type drying and calcining kiln |
| CN106323012A (en) * | 2015-07-09 | 2017-01-11 | 武汉艾蒙窑炉技术有限公司 | Rotary preheater and rotary kiln |
| CN108645206A (en) * | 2018-05-23 | 2018-10-12 | 山东京博装备制造安装有限公司 | A kind of progressive rotary kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |
|
| CX01 | Expiry of patent term |