CN211626100U - Kiln structure - Google Patents
Kiln structure Download PDFInfo
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- CN211626100U CN211626100U CN201922263288.2U CN201922263288U CN211626100U CN 211626100 U CN211626100 U CN 211626100U CN 201922263288 U CN201922263288 U CN 201922263288U CN 211626100 U CN211626100 U CN 211626100U
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Abstract
The utility model discloses a kiln structure, including the furnace body that has furnace, the furnace body has the refractory material layer that encloses into furnace and is located the outside radiation insulating layer of refractory material layer, and radiation insulating layer includes the one deck upper body that arranges in proper order from inside to outside, and the medial surface and/or the lateral surface coating of layer body have low emissivity material coating. The utility model has the advantages of simple and compact structure, low cost, easy manufacture, good heat insulation performance, low energy consumption and the like.
Description
Technical Field
The utility model relates to a thermal treatment equipment technical field, concretely relates to kiln structure.
Background
In the industries of metallurgy, chemical industry, electric power, electronics, ceramics and the like, the kiln is very commonly used and can be used for various purposes such as heating, melting, reaction generation and the like. The existing kiln refractory heat insulation and heat preservation layer mainly adopts a refractory material and heat preservation material masonry structure and a multi-layer vacuum structure.
The masonry structure of the refractory material and the heat-insulating material is formed by directly building or piling the refractory material, the heat-insulating material and the like in sequence from the inside to the outside of the furnace, and the method is the most widely and mature method applied in the kiln industry. But has the following disadvantages: with the improvement of energy-saving requirements and the continuous increase of material and labor costs, the costs of refractory materials and heat-insulating materials, masonry cost and the like needed to be consumed by the high-temperature kiln are increased sharply. And more refractory and heat-insulating materials have larger heat capacity, the temperature balance time is longer when the system is heated and started, more heat is absorbed, and more energy is wasted for production equipment which is frequently started.
The multilayer vacuum structure is generally used in a vacuum brazing or sintering furnace, and has the advantages of almost no refractory material, low manufacturing cost, small heat capacity of a system, quick start and stop and low energy consumption in the start and stop processes. The disadvantage is that the requirement for the gas tightness of the system is very high, and the system is not suitable for the situation that other gases participate in the reaction or more gases are produced in the production process.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provide a simple structure compactness, with low costs, easily make, thermal-insulated thermal insulation performance is good, the kiln structure that the energy consumption is low.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a kiln structure, includes the furnace body that has furnace, the furnace body has and encloses into furnace's refractory material layer with be located the outside radiation insulating layer of refractory material layer, radiation insulating layer includes the more than one deck body that arranges in proper order from inside to outside, the medial surface and/or the lateral surface coating of layer body have low emissivity material coating.
As a further improvement of the above technical solution:
the layer body has a first hollow insulating cavity.
The first hollow heat insulation cavity is connected with a vacuum pumping device.
And a heat insulation material layer is also arranged between the refractory material layer and the radiation heat insulation layer.
The refractory material layer is a refractory brick masonry layer or an alumina hollow ball brick masonry layer or a mullite light brick masonry layer, and the heat insulation material layer is a ceramic fiber plate or a ceramic fiber blanket or a nano plate.
The low-emissivity material coating is a coating film of aluminum powder with the particle size of 7-12 um.
The horizontal section of the hearth is rectangular.
The horizontal section of the hearth is circular.
A second hollow heat insulation cavity is formed between the adjacent two layers of the body.
The second hollow heat insulation cavity is connected with a vacuumizing machine.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses a furnace body adopts refractory material layer and radiation insulating layer's combination among the kiln structure, the medial surface and/or the lateral surface of the layer body of radiation insulating layer all coat and have low emissivity material coating, low emissivity material coating thermal-insulated thermal insulation performance is good, the heat capacity is little, the furnace body is under the condition that uses still less fire-resistant and insulation material, can realize better thermal-insulated thermal insulation performance, and reduce cost, the whole heat capacity of furnace body is little simultaneously, can reduce the energy consumption in the start-up machine. The kiln structure also has the advantages of simple and compact structure, low cost and easy manufacture.
Drawings
FIG. 1 is a schematic diagram of a sectional structure of a kiln structure with a rectangular horizontal section of a hearth.
FIG. 2 is a schematic diagram of a sectional structure of a kiln structure with a round horizontal cross-section of a hearth.
Illustration of the drawings:
1. a furnace body; 11. a hearth; 2. a layer of refractory material; 3. a layer body; 4. and (4) vacuumizing equipment.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1, the kiln structure of the embodiment includes a kiln body 1 having a hearth 11, the kiln body 1 has a refractory material layer 2 enclosing the hearth 11 and a radiation heat insulation layer located outside the refractory material layer 2, the radiation heat insulation layer includes more than one layer of body 3 arranged in sequence from inside to outside, and the inner side and/or the outer side of the body 3 are/is coated with a low emissivity material coating. Furnace body 1 adopts the combination of refractory material layer 2 and radiation insulating layer among this kiln structure, and the medial surface and/or the lateral surface of layer body 3 of radiation insulating layer all coat and have low emissivity material coating, and low emissivity material coating thermal-insulated thermal insulation performance is good, the heat capacity is little, and furnace body 1 can realize better thermal-insulated thermal insulation performance under the condition of using still less fire-resistant and insulation material to reduce cost, and the whole heat capacity of furnace body 1 is little simultaneously, can reduce the energy consumption in the start-up and shut down machine. The kiln structure also has the advantages of simple and compact structure, low cost and easy manufacture.
In this embodiment, both the inner side surface and the outer side surface of the layer body 3 are coated with the low emissivity material coating, and in other embodiments, only the inner side surface or the outer side surface of the layer body 3 may be coated with the low emissivity material coating.
In this embodiment, the layer body 3 has a first hollow heat insulation cavity, which can further improve the heat insulation performance of the layer body 3.
In this embodiment, first cavity thermal-insulated chamber links to each other with a vacuum pumping equipment 4, utilizes vacuum pumping equipment 4 to carry out the evacuation to first cavity thermal-insulated chamber, makes it maintain certain vacuum level, can reduce the heat conduction and the natural convection heat transfer effect of first cavity thermal-insulated intracavity air, can further improve thermal-insulated thermal insulation performance to it is low to set up the gas tightness requirement in first cavity thermal-insulated chamber of vacuum pumping equipment 4, can reduce the preparation degree of difficulty and cost. The vacuum pumping device 4 is prior art and will not be described herein.
In this embodiment, the heat insulation effect of the refractory material layer 2 greatly reduces the temperature of the outer wall of the refractory material layer 2 compared with that of the hearth 11, and when the heat insulation effect of the refractory material layer 2 cannot meet the requirement, a heat insulation material layer can be arranged between the refractory material layer 2 and the radiation heat insulation layer.
In the embodiment, the refractory material layer 2 is a refractory brick masonry layer or an alumina hollow ball brick masonry layer or a mullite light brick masonry layer, and the heat insulation material layer is a ceramic fiber plate or a ceramic fiber blanket or a nano plate. In other embodiments, the refractory layer 2 and the insulating layer may take other forms commonly used in existing heat treatment furnaces.
In the embodiment, the low-emissivity material coating is a coating film of aluminum powder with the particle size of 7-12 um, the particle size of the aluminum powder in the coating film is 7-12 um, and the heat-insulating property is optimal.
In this embodiment, a second hollow heat insulation cavity is formed between two adjacent layers of the bodies 3, and the second hollow heat insulation cavity can reduce heat conduction between the two adjacent layers of the bodies 3, so as to further improve the heat insulation performance of the furnace body 1.
In this embodiment, the second hollow insulating cavity is connected to a vacuum pump. The second hollow heat insulation cavity is vacuumized by the vacuumizing machine to be maintained at a certain vacuum level, so that the heat conduction and natural convection heat exchange effects of air in the second hollow heat insulation cavity can be reduced, the heat insulation performance can be further improved, the air tightness requirement of the vacuumizing machine on the second hollow heat insulation cavity is low, and the manufacturing difficulty and the manufacturing cost can be reduced. The vacuum extractor may be the same as the vacuum extractor 4 described above.
In this embodiment, the horizontal section of the furnace 11 is rectangular. In other embodiments, as shown in FIG. 2, the horizontal cross-section of the furnace 11 can also be circular.
The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention shall be considered as the protection scope of the present invention.
Claims (10)
1. A kiln construction comprising a body (1) with a hearth (11), characterized in that: the furnace body (1) has a refractory material layer (2) which is enclosed into the hearth (11) and a radiation heat-insulating layer which is positioned outside the refractory material layer (2), the radiation heat-insulating layer comprises more than one layer of body (3) which is arranged from inside to outside in sequence, and the inner side surface and/or the outer side surface of the layer of body (3) are/is coated with a low-emissivity material coating.
2. The kiln construction of claim 1 wherein: the layer body (3) has a first hollow insulating cavity.
3. The kiln construction of claim 2 wherein: the first hollow heat insulation cavity is connected with a vacuum pumping device (4).
4. The kiln construction of claim 1 wherein: and a heat insulation material layer is also arranged between the refractory material layer (2) and the radiation heat insulation layer.
5. The kiln construction of claim 4 wherein: the refractory material layer (2) is a refractory brick masonry layer or an alumina hollow ball brick masonry layer or a mullite light brick masonry layer, and the heat insulation material layer is a ceramic fiber plate or a ceramic fiber blanket or a nano plate.
6. The kiln construction of claim 1 wherein: the low-emissivity material coating is a coating film of aluminum powder with the particle size of 7-12 um.
7. The kiln construction of claim 1 wherein: the horizontal section of the hearth (11) is rectangular.
8. The kiln construction of claim 1 wherein: the horizontal section of the hearth (11) is circular.
9. The kiln construction according to any one of claims 1 to 8, characterized in that: a second hollow heat insulation cavity is formed between the adjacent two layers of the layer bodies (3).
10. The kiln construction of claim 9 wherein: the second hollow heat insulation cavity is connected with a vacuumizing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922263288.2U CN211626100U (en) | 2019-12-17 | 2019-12-17 | Kiln structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922263288.2U CN211626100U (en) | 2019-12-17 | 2019-12-17 | Kiln structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211626100U true CN211626100U (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922263288.2U Active CN211626100U (en) | 2019-12-17 | 2019-12-17 | Kiln structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211626100U (en) |
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2019
- 2019-12-17 CN CN201922263288.2U patent/CN211626100U/en active Active
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