CN215489703U - Combustion structure with good sealing performance - Google Patents
Combustion structure with good sealing performance Download PDFInfo
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- CN215489703U CN215489703U CN202121546181.XU CN202121546181U CN215489703U CN 215489703 U CN215489703 U CN 215489703U CN 202121546181 U CN202121546181 U CN 202121546181U CN 215489703 U CN215489703 U CN 215489703U
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Abstract
The utility model discloses a combustion structure with good sealing performance, which comprises a refractory brick wall and a silicon carbide sleeve, wherein an installation groove is formed in the refractory brick wall, and the shape of the installation groove is matched with that of the silicon carbide sleeve, so that the silicon carbide sleeve is embedded in the installation groove. According to the utility model, the refractory brick wall is arranged on the inner side of the kiln, the silicon carbide sleeve is embedded in the refractory brick wall, and the spray gun is directly sleeved in the silicon carbide sleeve.
Description
Technical Field
The utility model relates to the technical field of ceramic firing equipment, in particular to a combustion structure with good sealing performance.
Background
In the ceramic preparation engineering, the prepared green body needs to be conveyed to a kiln for firing, and a spray gun is used for increasing the temperature in the kiln during firing.
In the prior art, a burner block is generally arranged in a kiln, a jet orifice of the burner block faces the inside of the kiln, and gas and air in a spray gun are combusted in the burner block to form flame which is jetted from the jet orifice and generate a large amount of heat, so that the temperature in the kiln is rapidly increased. However, due to poor thermal shock resistance of the burner block, deformation, cracking and stripping are easy to occur in the high-temperature firing process, the service life of the burner block is affected, once the burner block is cracked, a kiln body is cracked and deformed quickly, the sealing performance around the burner block is poor, heat dissipation loss is large, energy waste is serious, and through detection, the temperature of a kiln wall around the burner block in a high-temperature area can reach 200-300 ℃, the work of workers is affected, and potential safety hazards are caused. Moreover, the burner block is heavy, so that the mounting and fixing difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a combustion structure with good sealing performance, wherein a refractory brick wall is arranged on the inner side of a kiln, a silicon carbide sleeve is embedded in the refractory brick wall, and a spray gun is directly sleeved in the silicon carbide sleeve.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a combustion structure that leakproofness is good, includes firebrick wall and carborundum sleeve, be equipped with the mounting groove on the firebrick wall, the shape of mounting groove with the telescopic shape phase-match of carborundum makes the carborundum sleeve is inlayed in the mounting groove.
Further, the silicon carbide sleeve comprises a mounting part and a spraying part, and the mounting part is used for being connected with a spray gun;
the one end that the installation department was kept away from to injection portion is equipped with the spout, the cross-sectional area of injection portion reduces after one end to spout department by being close to the installation department gradually.
Further, the distance between the nozzle and the side wall, facing the inside of the kiln, of the refractory brick wall is 150-250 mm.
Further, the distance between the nozzle and the refractory brick wall facing the side wall in the kiln is 0-10 mm.
Furthermore, one end of the mounting part, which is far away from the spraying part, protrudes outwards to form a limiting part, and the limiting part is used for limiting the position of the spray gun.
Furthermore, a refractory cotton layer is arranged between the silicon carbide sleeve and the refractory brick wall.
Furthermore, the firebricks adopted by the firebrick wall are mullite high-alumina light firebricks.
Furthermore, the inner surface of the firebrick wall is provided with a layer of high-radiation energy-saving coating layer, and the outer surface of the firebrick wall is provided with a heat preservation layer.
Furthermore, the heat preservation layer comprises a high-density heat preservation layer, a plurality of high-alumina aluminum silicate cotton blanket layers and a plurality of high-alumina aluminum silicate cotton blanket layers, each high-alumina aluminum silicate cotton blanket layer is adjacent to each high-alumina aluminum silicate cotton blanket layer and is arranged on the outer surface of the refractory brick wall at intervals, the inner surface of the high-alumina aluminum silicate cotton blanket layer closest to the refractory brick wall is fixedly connected with the outer surface of the refractory brick wall, and the outer surface of the high-alumina aluminum silicate cotton blanket layer farthest from the refractory brick wall is fixedly connected with the inner surface of the high-density heat preservation layer.
The beneficial effects of the above technical scheme are: the refractory brick wall in the technical scheme has the advantages of high refractoriness, good thermal shock resistance and good heat insulation effect; the Mohs hardness of the silicon carbide sleeve can reach 9.5 grade, and the silicon carbide sleeve can resist the high temperature of more than 2000 ℃, so that the silicon carbide sleeve still keeps better performance and structure at the high temperature without deformation and cracking, the combustion structure in the technical scheme adopts the structure that the silicon carbide sleeve is matched with a refractory brick wall, when the gas and air are fully combusted in the silicon carbide sleeve to generate huge heat, the silicon carbide sleeve can still keep complete shape and structure and good sealing performance and cannot deform or crack, thereby avoiding heat loss, and in addition, the refractory brick wall has good heat preservation and heat insulation effects, so that heat loss in the kiln can be further avoided, the aim of saving energy is achieved, and the problems that the periphery of the burner brick is poor in sealing performance and large in heat dissipation due to the fact that the burner brick is easy to deform or crack in the high-temperature firing process due to the fact that the burner brick is adopted as a combustion device in the existing kiln are solved.
Drawings
FIG. 1 is a cross-sectional view of a combustion structure according to one embodiment of the utility model;
FIG. 2 is a cross-sectional view of a combustion structure of another embodiment of the utility model;
FIG. 3 is a cross-sectional view of a combustion structure of yet another embodiment of the utility model;
FIG. 4 is a schematic structural view of the front side of the combustion structure shown in FIG. 1;
FIG. 5 is a schematic structural view of a silicon carbide sleeve of the combustion structure of FIG. 1;
the fireproof brick wall comprises a fireproof brick wall 1, a silicon carbide sleeve 2, a heat insulation layer 3, a high-radiation energy-saving coating layer 4, a fireproof cotton layer 5, an installation part 21, a spraying part 22, a nozzle 23, a limiting part 24, a high-density heat insulation layer 31, a multilayer high-alumina aluminum silicate cotton blanket layer 32 and a multilayer high-alumina aluminum silicate cotton blanket layer 33.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.
In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A combustion structure having good sealing performance according to an embodiment of the present invention will be described with reference to fig. 1 to 5.
The utility model provides a combustion structure that leakproofness is good, includes firebrick wall 1 and carborundum sleeve 2, is equipped with the mounting groove on the firebrick wall 1, and the shape of mounting groove and carborundum sleeve 2's shape phase-match make carborundum sleeve 2 inlay in the mounting groove.
Specifically, the combustion structure has firebrick wall 1 at the medial surface of kiln built among this technical scheme, has seted up the mounting groove on firebrick wall 1, and the shape and the size phase-match of carborundum sleeve 2 and mounting groove make carborundum sleeve 2 inlay on firebrick wall 1, and carborundum sleeve 2's spout 23 is inside towards the kiln, adopts the combustion structure among this technical scheme to change carborundum sleeve 2 convenient and fast. The silicon carbide sleeve 2 has the functions of fixing the spray gun on one hand and enabling fuel gas and air in the spray gun to be fully combusted in the silicon carbide sleeve 2 on the other hand to form combustion flame to be sprayed out, so that the temperature in the kiln is increased, and the purpose of sintering ceramics is achieved.
It is worth explaining that the refractory brick wall 1 in the technical scheme has the advantages of high refractoriness, good thermal shock resistance and good heat insulation effect; meanwhile, the silicon carbide sleeve 2 has the advantages of thermal shock resistance, small thermal expansion coefficient, high temperature resistance, light weight and high strength, the Mohs hardness of the silicon carbide sleeve 2 can reach 9.5 grade, and the silicon carbide sleeve can resist the high temperature of more than 2000 ℃, so that the silicon carbide sleeve still keeps better performance and structure at the high temperature without deformation and cracking, the combustion structure in the technical scheme adopts the structure of matching the silicon carbide sleeve 2 with the refractory brick wall 1, when fuel gas and air are fully combusted in the silicon carbide sleeve 2 to generate huge heat, the silicon carbide sleeve 2 still can keep complete shape structure and good sealing performance, and deformation and cracking can not occur, thereby avoiding heat loss, and the refractory brick wall 1 has good heat preservation and heat insulation effects to further avoid the heat in the kiln furnace, thereby achieving the purpose of energy conservation, and solving the problem that the existing kiln burners are adopted as combustion devices, the burner block is easy to deform or crack in the high-temperature firing process, so that the problems of poor sealing performance and large heat dissipation around the burner block are caused.
Preferably, the silicon carbide sleeve 2 comprises a mounting portion 21 and a spraying portion 22, the mounting portion 21 is used for connecting with a spray gun;
the end of the injection part 22 far away from the installation part 21 is provided with a nozzle 23, and the cross-sectional area of the injection part 22 is gradually reduced from the end near the installation part 21 to the nozzle 23.
It is worth to say that the spray gun is mainly installed in the installation portion 21, and gas and air in the spray gun are burnt and sprayed out in the spraying portion 22, the cross-sectional area of the spraying portion 22 is gradually reduced, so that spraying flame is more concentrated at the nozzle 23, the spraying is farther, the temperature in the middle of the kiln is increased, the transverse temperature difference in the kiln is smaller, and the ceramic achieves a better sintering effect.
Preferably, the distance between the nozzle 23 and the refractory brick wall 1 facing the side wall in the kiln is 150 to 250 mm.
Specifically, as shown in fig. 1, the silicon carbide sleeve 2 with the long sleeve can ensure that the nozzle 23 of the silicon carbide sleeve 2 extends 150-250 mm of the inner wall of the refractory brick wall 1, so that flame sprayed from the nozzle 23 can be sprayed to the middle of the kiln, and the temperature in the middle of the kiln can be rapidly increased.
Preferably, the distance between the nozzle 23 and the refractory brick wall 1 towards the side wall inside the kiln is between 0 and 10 mm.
As shown in figure 2, when the distance between the nozzle 23 and the inner wall of the refractory brick wall 1 is 0-10mm, the nozzle 23 of the silicon carbide sleeve 2 of the short sleeve just extends out of the kiln wall, so that the temperature on two sides of the kiln can be raised.
It is worth to be noted that the silicon carbide sleeves 2 with the two specifications can be flexibly matched according to the transverse temperature difference of the kiln in the actual firing process, so that the problem of the transverse temperature difference of the kiln is solved, if the transverse middle temperature of the kiln is low, the silicon carbide sleeves 2 with long sleeves are additionally arranged, and if the transverse middle temperature of the kiln is high and the temperatures of two sides of the kiln are low, the silicon carbide sleeves 2 with short sleeves are additionally arranged.
Preferably, one end of the mounting portion 21 away from the injection portion 22 protrudes outward to form a limiting portion 24, and the limiting portion 24 is used for limiting the position of the spray gun.
It is worth explaining that a clamping groove matched with the limiting part 24 is formed in the existing spray gun, and the limiting part 24 is clamped in the clamping groove, so that the position of the spray gun is fixed, and the potential safety hazard caused by the fact that the spray gun moves in the working process is avoided.
Preferably, a refractory cotton layer 3 is arranged between the silicon carbide sleeve 2 and the refractory brick wall 1.
The fireproof cotton has the advantages of being high in thermal stability, good in thermal shock resistance and good in sound absorption performance, one layer of fireproof cotton is filled between the silicon carbide sleeve 2 and the fireproof brick wall 1, the silicon carbide sleeve 2 can be more firmly embedded in the fireproof brick wall 1, the fireproof cotton layer 3 can improve the compactness and stability of the whole installation structure, heat dissipation is further reduced, the heat insulation effect is improved, and the purpose of energy conservation is achieved.
Preferably, the firebricks used for the firebrick wall 1 are mullite high-alumina light firebricks.
Specifically, the mullite high-alumina light refractory brick is a high-alumina refractory material taking mullite (3Al2O3 & 2SiO2) as a main crystal phase, the content of alumina is 65-75%, the refractoriness of the mullite high-alumina light refractory brick can reach 1790 ℃, and the compressive strength can reach 260MPa, so the mullite high-alumina light refractory brick has the advantages of low thermal conductivity, high refractoriness and thermal shock resistance, the mullite high-alumina light refractory brick has low thermal conductivity, little heat energy is accumulated in a kiln, the energy-saving effect of a refractory wall is obvious, and the mullite high-alumina light refractory brick has the advantages of high refractoriness and thermal shock resistance, so that the mullite high-alumina light refractory brick cannot crack and cause heat loss during high-temperature firing, the compactness of the kiln can be ensured, and the heat dissipation near a spray gun is reduced.
Preferably, the inner surface of the firebrick wall 1 is provided with a layer of high-radiation energy-saving coating layer 4, and the outer surface of the firebrick wall 1 is provided with a heat preservation layer 3.
Preferably, the heat preservation layer 3 comprises a high-density heat preservation layer 31, a plurality of high-alumina aluminum silicate cotton blanket layers 32 and a plurality of high-alumina aluminum silicate cotton blanket layers 33, each high-alumina aluminum silicate cotton blanket layer 32 is adjacent to each high-alumina aluminum silicate cotton blanket layer 33 and is arranged on the outer surface of the refractory brick wall 1 at intervals, the inner surface of the high-alumina aluminum silicate cotton blanket layer 32 closest to the refractory brick wall 1 is fixedly connected with the outer surface of the refractory brick wall 1, and the outer surface of the high-alumina aluminum silicate cotton blanket layer 33 farthest from the refractory brick wall 1 is fixedly connected with the inner surface of the high-density heat preservation layer 31.
It is worth to be noted that, as shown in fig. 3, the high-radiation energy-saving coating layer 4 is disposed on the inner surface of the firebrick wall 1, and the high-radiation energy-saving coating layer 4 can improve the heat radiation efficiency, improve the heat exchange efficiency in the kiln, and enhance the heat radiation heat transfer, and has good high-temperature stability, so as to achieve the purpose of improving the heat utilization rate of the kiln and saving energy, furthermore, the insulating layer 3 is disposed on the outer surface of the firebrick wall 1, and in the insulating layer 3, each layer of the high-alumina silicate aluminum cotton blanket layer 32 is disposed adjacent to each layer of the high-alumina silicate aluminum cotton blanket layer 33 and spaced from each other on the outer surface of the firebrick wall 1, because the high-alumina silicate aluminum cotton blanket layer 32 has good elasticity and better adhesion with the firebrick wall 1, the density of the insulating layer 3 is higher, the heat dissipation is less, so as to achieve better heat preservation effect, by disposing the high-density insulating layer 31 on the outer surface of the high-alumina silicate aluminum blanket 33 farthest from the firebrick wall 1, the heat preservation effect of the heat preservation layer 3 is further improved, the energy-saving heat preservation structure of the ceramic kiln is good in heat preservation effect, compact in structure and good in compactness, the heat utilization rate of the kiln is improved, the energy is saved, and the problems that the heat preservation structure of the existing kiln is poor in compactness, poor in heat preservation effect and poor in energy conservation effect are solved.
Specifically, the high-alumina aluminum silicate cotton blanket layer 32 is provided with three layers, the high-alumina aluminum silicate cotton blanket layer 33 is provided with three layers, each high-alumina aluminum silicate cotton blanket layer 32 is adjacent to each high-alumina aluminum silicate cotton blanket layer 33 and arranged on the outer surface of the refractory brick wall 1 at intervals, the structure is simple, and the heat preservation effect of the energy-saving heat preservation structure of the ceramic kiln is guaranteed.
Other constructions and operations of the combustion structure having good sealing performance according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. The utility model provides a combustion structure that leakproofness is good, its characterized in that includes firebrick wall and carborundum sleeve, be equipped with the mounting groove on the firebrick wall, the shape of mounting groove with the telescopic shape phase-match of carborundum makes the carborundum sleeve is inlayed in the mounting groove.
2. The combustion structure with good sealing performance according to claim 1, wherein the silicon carbide sleeve comprises a mounting part and a spraying part, and the mounting part is used for being connected with a spray gun;
the one end that the installation department was kept away from to injection portion is equipped with the spout, the cross-sectional area of injection portion reduces after one end to spout department by being close to the installation department gradually.
3. The combustion structure of claim 2, wherein the distance between the port and the refractory brick wall toward the inner side wall of the kiln is 150 to 250 mm.
4. A combustion structure with good sealing performance according to claim 2, wherein the distance between the port and the refractory brick wall facing the side wall in the kiln is 0-10 mm.
5. The combustion structure with good sealing performance according to claim 2, wherein one end of the mounting portion, which is far away from the injection portion, protrudes outwards to form a limiting portion, and the limiting portion is used for limiting the position of the spray gun.
6. The combustion structure of claim 1, wherein a refractory cotton layer is disposed between the silicon carbide sleeve and the refractory brick wall.
7. The combustion structure with good sealing performance as claimed in claim 1, wherein the refractory bricks adopted by the refractory brick wall are mullite high-alumina light refractory bricks.
8. The combustion structure with good sealing performance according to claim 1, wherein the inner surface of the firebrick wall is provided with a high-radiation energy-saving coating layer, and the outer surface of the firebrick wall is provided with a heat-insulating layer.
9. The combustion structure with good sealing performance as claimed in claim 8, wherein the thermal insulation layer comprises a high density thermal insulation layer, a plurality of high alumina aluminum silicate cotton blanket layers and a plurality of high alumina aluminum silicate cotton blanket layers, each high alumina aluminum silicate cotton blanket layer is arranged on the outer surface of the refractory brick wall adjacent to each high alumina aluminum silicate cotton blanket layer and spaced from each other, the inner surface of the high alumina aluminum silicate cotton blanket layer closest to the refractory brick wall is fixedly connected with the outer surface of the refractory brick wall, and the outer surface of the high alumina aluminum silicate cotton blanket layer farthest from the refractory brick wall is fixedly connected with the inner surface of the high density thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121546181.XU CN215489703U (en) | 2021-07-08 | 2021-07-08 | Combustion structure with good sealing performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121546181.XU CN215489703U (en) | 2021-07-08 | 2021-07-08 | Combustion structure with good sealing performance |
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| Publication Number | Publication Date |
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| CN215489703U true CN215489703U (en) | 2022-01-11 |
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| CN202121546181.XU Active CN215489703U (en) | 2021-07-08 | 2021-07-08 | Combustion structure with good sealing performance |
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| CN (1) | CN215489703U (en) |
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- 2021-07-08 CN CN202121546181.XU patent/CN215489703U/en active Active
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