CN201680719U - Thermal-type crucible bottom-free heating and heat-preservation electric furnace - Google Patents
Thermal-type crucible bottom-free heating and heat-preservation electric furnace Download PDFInfo
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- CN201680719U CN201680719U CN 201020165366 CN201020165366U CN201680719U CN 201680719 U CN201680719 U CN 201680719U CN 201020165366 CN201020165366 CN 201020165366 CN 201020165366 U CN201020165366 U CN 201020165366U CN 201680719 U CN201680719 U CN 201680719U
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Abstract
The utility model relates to a thermal-type crucible bottom-free heating and heat-preservation electric furnace, which comprises a furnace shell and a furnace chamber, wherein a plurality of heat-preservation layers is arranged between the furnace shell and the furnace chamber, the lower part of the furnace chamber is a furnace bottom, and the bottom part of the furnace bottom is provided with a heating device. The utility model adopts the structure mode of crucible bottom-free heating, can complete a number of the performance tests of the electric furnace through a number of field tests, test results show that compared with the old heating and heat-preservation electric furnace, the electric furnace can save energy by 10%, and the quality of aluminum, magnesium alloy and other alloys can be improved significantly.
Description
Technical field
The utility model relates to a kind of electric furnace, especially a kind of no crucible bottom heating type heating, electric mantle heater.
Background technology
Light-duty alloys such as aluminum current alloy, magnesium alloy, major part is gravitational casting or diecasting alloys, must carry out heat fused and insulation before its casting, the electric furnace major part of using in the past is crucible furnace, crucible outer wall burner hearth place is a heating element heater, the heating element heater position is relatively near crucible top, and heat scatters and disappears very fast.Crucible mostly is graphite crucible or graphite plus silicon carbide crucible, and graphite is very fast through heating rear oxidation speed, and the crucible outer wall adheres to slag, cause the crucible thermal conductivity sharply to descend, and the electric furnace thermal efficiency is seriously reduced, and former crucible life is shorter, and average is below 3 months.
Independent no crucible furnace is arranged now, generally adopt the top radiation heating, or adopt heating tube to insert the mode that heats in the aluminium liquid; But its heating and heat insulation effect all are not too desirable, and energy consumption is higher.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of simple structure, thermal conductivity height, long service life, energy-saving and emission-reduction, the no crucible bottom heating type heating of bottom heating, electric mantle heater being provided.
For achieving the above object, the utility model adopts following technical proposals:
A kind of no crucible bottom heating type heating, electric mantle heater comprise furnace shell and furnace chamber, are provided with the several layers heat-insulation layer between furnace shell and the furnace chamber, and the bottom of furnace chamber is a furnace bottom, and the furnace bottom bottom is provided with heater.
Described heat-insulation layer is followed successively by the high alumina casting bed of material, the lightening casting bed of material, heavy fire brick layer, light fire brick layer and alumina silicate blanket layer from inside to outside.
Described heater comprises heating chamber and the heater that is arranged at wherein.
Described heating chamber is a closed cavity, its bottom and all around sidewall constitute by refractory material.
Heater in the utility model is electric heater or other existing firing equipments.
Electric furnace liner in the utility model is designed to multilayer form for guaranteeing service life and heat insulation effect.Wherein the one deck that contacts with the aluminium liquid phase has adopted high alumina castable, helps improving lining durability, and the furnace wall is difficult for adhering to the aluminium slag.Be followed successively by the lightening casting bed of material, purpose is to improve the heat insulation effect of stove.The heavy fire brick layer can play supporting role preferably.Light fire brick layer and alumina silicate blanket layer have strengthened the heat insulation effect of electric furnace.
Furnace bottom adopts recrystallized silicon carbide, carborundum in conjunction with a kind of material in the multiple materials such as silicon nitride, Sialon combined silicon carbide material, Sialon material, silicon nitride, and above material thermal conductivity is good, the intensity height, and high-temperature stability is good, and the life-span reached more than 1 to 2 year.
Heating chamber is a closed cavity, the bottom and all around sidewall be refractory material, have heat insulation effect preferably, therefore the heat of generation is mainly used to heat aluminium liquid, has improved the thermal efficiency of whole electric furnace.
The utility model adopts no crucible to add the frame mode of bottom heating, through on-the-spot test of many times, has finished the multinomial performance test of this electric furnace, result of the test shows, this electric furnace is compared with old-fashioned heating, electric mantle heater, energy-conservationly surpasses 10%, and alloy mass such as aluminium, magnesium alloy are improved significantly.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 be among Fig. 1 A-A to cutaway view;
Wherein 1. furnace shells, 2. furnace chamber, 3. furnace bottom, 4. heater, 5. heating chamber, 6. the high alumina casting bed of material, 7. the lightening casting bed of material, 8. heavy fire brick layer, 9. light fire brick layer, 10. alumina silicate blanket layer.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Among Fig. 1-2, no crucible bottom heating type heating, electric mantle heater comprise furnace shell 1 and furnace chamber 2, are provided with the several layers heat-insulation layer between furnace shell 1 and the furnace chamber 2, and the bottom of furnace chamber 2 is a furnace bottom 3, and furnace bottom 3 bottoms are provided with heater.
Described heat-insulation layer is followed successively by the high alumina casting bed of material 6, the lightening casting bed of material 7, heavy fire brick layer 8, light fire brick layer 9 and alumina silicate blanket layer 10 from inside to outside.
Described heater comprises heating chamber 5 and the heater 4 that is arranged at wherein.
Described heating chamber is a closed cavity, its bottom and all around sidewall constitute by refractory material.
Heater in the utility model is electric heater or other existing firing equipments.
Electric furnace liner in the utility model is designed to multilayer form for guaranteeing service life and heat insulation effect.Wherein the one deck that contacts with the aluminium liquid phase has adopted high alumina castable, helps improving lining durability, and the furnace wall is difficult for adhering to the aluminium slag.Be followed successively by the lightening casting bed of material 7, purpose is to improve the heat insulation effect of stove.Heavy fire brick layer 8 can play supporting role preferably.Light fire brick layer 9 and alumina silicate blanket layer 9 have strengthened the heat insulation effect of electric furnace.
Heating chamber 5 is a closed cavity, the bottom and all around sidewall be refractory material, have heat insulation effect preferably, therefore the heat of generation is mainly used to heat aluminium liquid, has improved the thermal efficiency of whole electric furnace.
Claims (4)
1. a no crucible bottom heating type heating, electric mantle heater comprise furnace shell and furnace chamber, and it is characterized in that: be provided with the several layers heat-insulation layer between furnace shell and the furnace chamber, the bottom of furnace chamber is a furnace bottom, and the furnace bottom bottom is provided with heater.
2. no crucible bottom heating type heating according to claim 1, electric mantle heater, it is characterized in that: described heat-insulation layer is followed successively by the high alumina casting bed of material, the lightening casting bed of material, heavy fire brick layer, light fire brick layer and alumina silicate blanket layer from inside to outside.
3. no crucible bottom heating type heating according to claim 1, electric mantle heater, it is characterized in that: described heater comprises heating chamber and the heater that is arranged at wherein.
4. no crucible bottom heating type heating according to claim 3, electric mantle heater, it is characterized in that: described heating chamber is a closed cavity, its bottom and all around sidewall constitute by refractory material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020165366 CN201680719U (en) | 2010-04-21 | 2010-04-21 | Thermal-type crucible bottom-free heating and heat-preservation electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020165366 CN201680719U (en) | 2010-04-21 | 2010-04-21 | Thermal-type crucible bottom-free heating and heat-preservation electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201680719U true CN201680719U (en) | 2010-12-22 |
Family
ID=43345760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020165366 Expired - Fee Related CN201680719U (en) | 2010-04-21 | 2010-04-21 | Thermal-type crucible bottom-free heating and heat-preservation electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201680719U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525983A (en) * | 2013-09-29 | 2014-01-22 | 长城汽车股份有限公司 | Heating furnace |
| CN110132009A (en) * | 2018-03-09 | 2019-08-16 | 边仁杰 | Zipper serves as a contrast hot bottom retort |
| CN113465375A (en) * | 2020-03-31 | 2021-10-01 | 帅翼驰(上海)铝合金设备有限公司 | Dig latent formula heat preservation stove |
-
2010
- 2010-04-21 CN CN 201020165366 patent/CN201680719U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525983A (en) * | 2013-09-29 | 2014-01-22 | 长城汽车股份有限公司 | Heating furnace |
| CN103525983B (en) * | 2013-09-29 | 2016-08-17 | 长城汽车股份有限公司 | Heating furnace |
| CN110132009A (en) * | 2018-03-09 | 2019-08-16 | 边仁杰 | Zipper serves as a contrast hot bottom retort |
| CN110132009B (en) * | 2018-03-09 | 2023-12-29 | 边仁杰 | Furnace pot with zipper lining and hot bottom |
| CN113465375A (en) * | 2020-03-31 | 2021-10-01 | 帅翼驰(上海)铝合金设备有限公司 | Dig latent formula heat preservation stove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20101222 Termination date: 20120421 |