CN211390494U - Heat insulation structure of silicon carbide heating rod coating curing oven - Google Patents
Heat insulation structure of silicon carbide heating rod coating curing oven Download PDFInfo
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- CN211390494U CN211390494U CN201922401260.0U CN201922401260U CN211390494U CN 211390494 U CN211390494 U CN 211390494U CN 201922401260 U CN201922401260 U CN 201922401260U CN 211390494 U CN211390494 U CN 211390494U
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Abstract
The utility model discloses a heat insulation structure of a silicon carbide heating rod coating curing oven, which comprises an oven body; the inner side of the furnace body is provided with a heat insulation layer, the inner side of the heat insulation layer is provided with a reflecting screen, and the inner side of the reflecting screen is provided with a high-temperature coating layer; the inner side of the high-temperature coating layer is provided with a heating cavity; a burner is arranged at the top of the furnace body, an exhaust pipe is arranged on one side of the burner and is communicated with the heating cavity; the bottom of the heating cavity is provided with a storage table, and the top of the storage table is connected with a storage plate; through the multilayer thermal-insulated structure that sets up, reach good thermal-insulated effect, reduced the heat loss when heating the solidification coating, improved heat utilization efficiency, increased the security of using simultaneously.
Description
Technical Field
The utility model belongs to carborundum heating rod production field especially relates to a carborundum heating rod coating curing oven's thermal-insulated structure.
Background
Silicon carbide is widely used for manufacturing silicon-carbon heating rods of electric heating elements due to stable chemical properties, high heat conductivity and small thermal expansion coefficient.
When the silicon carbide heating rod is manufactured, the surface of the silicon carbide heating rod is required to be coated with paint, the silicon carbide heating rod is required to be placed into a high-temperature furnace after the paint is coated, and the paint on the surface of the silicon carbide heating rod is required to be solidified, so that the silicon carbide heating rod has a better heat conduction effect and is more durable; however, most of the existing curing ovens adopt a high-temperature gas curing mode, and a simple heat insulation layer or even no heat insulation layer is arranged on the surface of the curing oven, so that a large amount of heat energy is lost and wasted when the coating is heated and cured, and the curing oven is easy to scald by manual operation; meanwhile, the coating is low in curing efficiency and large in heat loss in a high-temperature gas curing mode.
In the prior art, Chinese patent application No. 201910609680X discloses an external heating curing oven for a nickel-based alloy powder coating, which aims at solving the problems that the traditional curing oven is of a direct heating type, fuel is directly combusted to generate a large amount of waste gas, the physical and chemical properties of the coating are influenced by the waste gas, and the energy consumption is high; the inner part of the furnace body is provided with a circular inner wall, and an induction heating coil is embedded in the inner wall; a combustion chamber is arranged on one side of the heat exchanger, and an ignition device is arranged outside the combustion chamber; and a sealing plate is arranged at the connecting part of the combustion chamber and the heat exchanger.
Above-mentioned technical scheme, thermal-insulated effect is poor, leads to calorific loss, through heating it, utilizes high temperature nitrogen gas to heat the solidification to coating, and solidification efficiency is low, and is long-time, causes a large amount of calorific loss.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to provide a thermal-insulated structure of carborundum heating rod coating curing oven through the multilayer thermal-insulated structure that sets up, reaches good thermal-insulated effect, has reduced the heat loss when heating the curing coating, has improved heat utilization rate, has increased the security of use simultaneously, effectively prevents to scald.
The utility model provides a following technical scheme:
a heat insulation structure of a silicon carbide heating rod coating curing furnace comprises a furnace body; the inner side of the furnace body is provided with a heat insulation layer, the inner side of the heat insulation layer is provided with a reflecting screen, and the inner side of the reflecting screen is provided with a high-temperature coating layer; the inner side of the high-temperature coating layer is provided with a heating cavity; a burner is arranged at the top of the furnace body, an exhaust pipe is arranged on one side of the burner and is communicated with the heating cavity; the heating chamber bottom is equipped with puts the thing platform, it is connected with and puts the thing board to put thing bench top.
Preferably, the furnace body is of a cylindrical structure, and the heat insulation layer, the reflecting screen and the high-temperature coating layer are sequentially arranged on the inner side of the furnace body in a surrounding manner; the heat insulation layer comprises a plurality of fiber layers and a plurality of gel layers; the fiber layer and the gel layer are sequentially arranged at intervals to form a multilayer structure.
Preferably, the fiber layer is made of a quartz fiber net, and the gel layer is made of silicon dioxide aerogel; the thickness of the heat insulation layer is 2-4 cm.
Preferably, the fiber layer and the gel layer are bonded by a high-temperature adhesive.
Preferably, the reflecting screen is made of a nano microporous heat insulating material, and the thickness of the reflecting screen is 0.2-0.5 cm.
Preferably, the thickness of the high-temperature coating layer is 0.5-2 mm.
Preferably, a movable door is arranged on the side surface of the furnace body.
Preferably, the high-temperature adhesive adopts a sodium silicate adhesive, so that the high-temperature adhesive is high-temperature resistant and has a good bonding effect.
Preferably, the reflecting screen and the heat insulation layer are bonded through a high-temperature adhesive.
Preferably, the fiber layer adopted by the heat insulation layer can be a layer of quartz mesh and a plurality of layers of aluminum silicate fiber paper.
In addition, the nanometer microporous heat insulating material is a high-performance high-heat-resistant material formed by chemical reaction of silicon dioxide particles with the diameter of about ten nanometers and components such as an infrared opacifier, fibers and the like, and the nanometer microporous heat insulating material has a large amount of nanometer micropores in the gas, good heat stability, less heat storage and thermal shock resistance.
The heat-insulating coating material contains a composition represented by a K2NiF4 structure, an Sr3Ti2O7 structure, an Sr4Ti3O10 structure and LaTaO4, and also contains one or more of M2SiO 4.
The type of the heat insulation coating material is HN-2636.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model relates to a thermal-insulated structure of carborundum heating rod coating curing oven through the multilayer thermal-insulated structure that sets up, reaches good thermal-insulated effect, has reduced the heat loss when heating the curing coating, has improved heat utilization rate, has increased the security of using simultaneously.
(2) The utility model relates to a thermal-insulated structure of carborundum heating rod coating curing oven further promotes good high temperature resistance and thermal stability through quartz fiber net and silica aerogel that set up at the insulating layer interval.
(3) The utility model relates to a thermal-insulated structure of carborundum heating rod coating curing oven, fibrous layer adopt the mode of one deck quartz screen + multilayer alumina silicate fiber paper, and the area of contact is effectively reduced to the thermal contact surface of quartz fiber net face and reflecting screen to reduce the event heat and pass mutually, reduce heat transfer efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the heat insulation structure of the present invention.
Fig. 3 is a schematic structural diagram of the thermal insulation layer of the present invention.
In the figure: 1. a furnace body; 2. a thermal insulation layer; 3. a reflective screen; 4. coating a brushing layer at a high temperature; 5. a placing table; 6. a storage plate; 7. a burner; 8. an exhaust pipe; 9. a fibrous layer; 10. a gel layer; 11. a chamber is heated.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined to clearly and completely describe the technical solutions of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
As shown in fig. 1-3, a heat insulation structure of a silicon carbide heating rod coating curing furnace comprises a furnace body 1; a heat insulation layer 2 is arranged on the inner side of the furnace body 1, a reflecting screen 3 is arranged on the inner side of the heat insulation layer 2, and a high-temperature coating layer 4 is arranged on the inner side of the reflecting screen 3; the inner side of the high-temperature coating layer 4 is provided with a heating cavity 11; a burner 7 is arranged at the top of the furnace body 1, an exhaust pipe 8 is arranged on one side of the burner 7, and the exhaust pipe 8 is communicated with the heating cavity 11; heating chamber 11 bottom is equipped with puts thing platform 5, it is connected with and puts thing board 6 to put 5 tops of thing platform.
The furnace body 1 is of a cylindrical structure, and the heat insulation layer 2, the reflecting screen 3 and the high-temperature coating layer 4 are sequentially arranged on the inner side of the furnace body 1 in a surrounding manner; the heat insulation layer 2 comprises a plurality of fiber layers 9 and a plurality of gel layers 10; the fiber layer 9 and the gel layer 10 are sequentially arranged at intervals to form a multi-layer structure; and a movable door is arranged on the side surface of the furnace body 1.
Through the multilayer thermal-insulated structure that sets up, reach good thermal-insulated effect, reduced the heat loss when heating the solidification coating, improved heat utilization efficiency, increased the security of using simultaneously.
Example two:
the improvement is carried out on the basis of the first embodiment, the fiber layer 9 adopts a quartz fiber net, and the gel layer 10 adopts silica aerogel; the thickness of the heat insulation layer 2 is 2 cm; the fiber layer 9 is bonded with the gel layer 10 through a high-temperature adhesive; the reflecting screen 3 is made of a nano microporous heat insulating material, and the thickness of the reflecting screen 3 is 0.2 cm; the thickness of the high-temperature coating layer 4 is 0.5 mm; the high-temperature adhesive adopts a sodium silicate adhesive, so that the high-temperature adhesive is high-temperature resistant and has good adhesion effect; the reflecting screen 3 is bonded with the heat insulation layer 2 through a high-temperature adhesive.
Through the quartz fiber net and the silica aerogel that set up at 2 intervals of insulating layer further promote good high temperature resistance and thermal stability.
EXAMPLE III
The improvement is carried out on the basis of the first embodiment and the second embodiment, and the fiber layer 9 adopted by the heat insulation layer 2 can be a quartz mesh plus a plurality of layers of aluminum silicate fiber paper.
In addition, the nanometer microporous heat insulating material is a high-performance high-heat-resistant material formed by chemical reaction of silicon dioxide particles with the diameter of about ten nanometers and components such as an infrared opacifier, fibers and the like, and the nanometer microporous heat insulating material has a large amount of nanometer micropores in the gas, good heat stability, less heat storage and thermal shock resistance.
The thermal insulation coating material contains a composition represented by a K2NiF4 structure, an Sr3Ti2O7 structure, an Sr4Ti3O10 structure, LaTaO4, and a composition represented by a composition formula M2SiO 4; the type of the heat insulation coating material is HN-2636.
The fiber layer 9 adopts a mode of one layer of quartz mesh and multiple layers of aluminum silicate fiber paper, and the contact area of the surface of the quartz fiber mesh and the heat contact surface of the reflecting screen 3 is effectively reduced, so that heat transfer is reduced, and the heat transfer efficiency is reduced.
The device obtained by the technical scheme is a heat insulation structure of a silicon carbide heating rod coating curing furnace, when the silicon carbide heating rod is subjected to coating curing, the silicon carbide heating rod coated with the coating is placed into a heating cavity 11 of an accident drawing through a movable door, after the power is turned on, a burner is turned on, the silicon carbide heating rod is directly heated, and a direct heating mode is adopted, so that the heating efficiency is high, the coating curing is fast, and the heat energy loss is small; the multilayer heat insulation structure achieves a good heat insulation effect, reduces heat loss when the coating is heated and cured, improves the heat utilization rate, and increases the use safety; the quartz fiber net and the silicon dioxide aerogel which are arranged at intervals on the heat insulation layer 2 further improve the good high temperature resistance and thermal stability; the fiber layer 9 adopts a mode of one layer of quartz mesh and multiple layers of aluminum silicate fiber paper, and the contact area of the surface of the quartz fiber mesh and the heat contact surface of the reflecting screen 3 is effectively reduced, so that heat transfer is reduced, and the heat transfer efficiency is reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A heat insulation structure of a silicon carbide heating rod coating curing furnace comprises a furnace body (1); the furnace is characterized in that a heat insulation layer (2) is arranged on the inner side of the furnace body (1), a reflecting screen (3) is arranged on the inner side of the heat insulation layer (2), and a high-temperature coating layer (4) is arranged on the inner side of the reflecting screen (3); the inner side of the high-temperature coating layer (4) is provided with a heating cavity (11); a burner (7) is arranged at the top of the furnace body (1), an exhaust pipe (8) is arranged on one side of the burner (7), and the exhaust pipe (8) is communicated with the heating cavity (11); heating chamber (11) bottom is equipped with puts thing platform (5), it puts thing board (6) to put thing platform (5) top connection.
2. The heat insulation structure of the silicon carbide heating rod coating curing furnace as claimed in claim 1, wherein the furnace body (1) is a cylindrical structure, and the heat insulation layer (2), the reflecting screen (3) and the high temperature coating layer (4) are sequentially arranged on the inner side of the furnace body (1) in a surrounding manner; the heat insulation layer (2) comprises a plurality of fiber layers (9) and a plurality of gel layers (10); the fiber layer (9) and the gel layer (10) are sequentially arranged at intervals to form a multilayer structure.
3. The heat insulation structure of the silicon carbide heating rod coating curing oven as claimed in claim 2, wherein the fiber layer (9) is made of quartz fiber net, and the gel layer (10) is made of silica aerogel; the thickness of the heat insulation layer (2) is 2-4 cm.
4. The heat insulation structure of the silicon carbide heating rod coating curing oven as claimed in claim 2, wherein the fiber layer (9) and the gel layer (10) are bonded by a high temperature adhesive.
5. The heat insulation structure of the silicon carbide heating rod coating curing oven as claimed in claim 1, wherein the reflecting screen (3) is made of nano-microporous heat insulation material, and the thickness of the reflecting screen (3) is 0.2-0.5 cm.
6. The heat insulation structure of the silicon carbide heating rod coating curing oven as claimed in claim 1, wherein the thickness of the high temperature coating layer (4) is 0.5-2 mm.
7. The heat insulation structure of the silicon carbide heating rod coating curing furnace as claimed in claim 1, wherein a side of the furnace body (1) is provided with a movable door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401260.0U CN211390494U (en) | 2019-12-27 | 2019-12-27 | Heat insulation structure of silicon carbide heating rod coating curing oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922401260.0U CN211390494U (en) | 2019-12-27 | 2019-12-27 | Heat insulation structure of silicon carbide heating rod coating curing oven |
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| Publication Number | Publication Date |
|---|---|
| CN211390494U true CN211390494U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922401260.0U Active CN211390494U (en) | 2019-12-27 | 2019-12-27 | Heat insulation structure of silicon carbide heating rod coating curing oven |
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| Country | Link |
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| CN (1) | CN211390494U (en) |
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