CN218583750U - Roller kiln - Google Patents
Roller kiln Download PDFInfo
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- CN218583750U CN218583750U CN202222800688.4U CN202222800688U CN218583750U CN 218583750 U CN218583750 U CN 218583750U CN 202222800688 U CN202222800688 U CN 202222800688U CN 218583750 U CN218583750 U CN 218583750U
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- chamber
- roller kiln
- atmosphere gas
- furnace
- insulating layer
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Abstract
The utility model provides a roller kiln, it possesses the gaseous introduction way of atmosphere to leading-in atmosphere in the stove, roller kiln's characterized in that possesses: the chamber is formed inside the heat insulation layer of the roller kiln; an outer flow path formed in the first heat insulating layer on the outer side of the furnace with respect to the chamber, the outer flow path communicating with the chamber from a source of an atmosphere gas outside the furnace; and an inner passage formed in the second heat insulating layer on the inner side of the furnace with respect to the chamber, communicating from the chamber into the furnace, and including the outer passage, the chamber, and the inner passage to form an atmospheric gas introduction passage. Since the atmosphere gas introduction passage is provided with the chamber, the residence time of the atmosphere gas in the atmosphere gas introduction passage can be increased, and the atmosphere gas can be preheated more reliably.
Description
Technical Field
The utility model relates to a roller kiln.
Background
Conventionally, there is known a roller kiln provided with an atmosphere gas introduction passage for introducing an atmosphere gas into a furnace. In such a conventional roller kiln, since the atmosphere gas introduction passage is generally formed only by a tubular passage penetrating a heat insulating layer constituting a side wall and a bottom surface of the furnace, a residence time of the atmosphere gas in the atmosphere gas introduction passage is short, and preheating of the atmosphere gas may be insufficient.
SUMMERY OF THE UTILITY MODEL
Problem to be solved by utility model
An object of the present invention is to provide a roller kiln capable of preheating an atmosphere gas introduced into a furnace more reliably.
Means for solving the problems
In order to solve the above problem, a first aspect of the present invention is a roller kiln including an atmosphere gas introduction path for introducing an atmosphere gas into a furnace, the roller kiln including:
a chamber formed inside the heat insulating layer of the roller kiln;
an outer flow path formed in the first heat insulating layer on the outer side of the furnace with respect to the chamber, the outer flow path communicating with the chamber from a source of an atmosphere gas outside the furnace; and
an inner flow path formed in the second heat insulating layer on the inner side of the furnace with respect to the chamber and communicating with the inside of the furnace from the chamber,
an atmosphere gas introduction passage is formed including the outer passage, the chamber, and the inner passage.
A second aspect of the present invention is the roller kiln of the first aspect, wherein the second heat insulating layer is formed in plurality with the inner side flow path.
The utility model discloses a third mode's characterized in that, in the roller kilns of second mode, it is a plurality of inboard flow path is in set up side by side on the length direction of roller kilns.
A fourth mode of the present invention is characterized in that, in the roller kiln of the second mode, the chamber is disposed on the heat insulating layer of the side wall of the roller kiln,
the plurality of inner flow paths are arranged in parallel in the height direction of the roller kiln.
A fifth mode of the present invention is characterized in that, in the roller kiln of the second mode, the chamber is disposed on the heat insulating layer on the bottom surface of the roller kiln,
the plurality of inner flow paths are arranged in parallel in the width direction of the roller kiln.
A sixth mode of the present invention is characterized in that, in the roller kiln according to any one of the first to fifth modes,
the ratio of the cross-sectional area of a first communication port that communicates the outer flow path with the chamber to the cross-sectional area of a second communication port that communicates the inner flow path with the chamber is 1 or more and 5 or less.
A seventh mode of the present invention is characterized in that, in the roller kiln according to any one of the first to fifth modes,
the volume of the chamber is 1500cm 3 Above and 5000cm 3 The following.
An eighth aspect of the present invention is characterized in that, in the roller kiln according to any one of the first to fifth aspects,
the ratio of the thickness of the first heat insulating layer to the thickness of the second heat insulating layer is 0.5 to 2.5.
Effect of the utility model
In the roller kiln of the present invention, the atmosphere gas introduction passage is formed to include an outer flow passage, a chamber, and an inner flow passage. Since the atmosphere gas introduction passage is provided with the chamber, the residence time of the atmosphere gas in the atmosphere gas introduction passage can be increased, and the atmosphere gas can be preheated more reliably.
Drawings
Fig. 1 is a front sectional view of the roller kiln according to the embodiment of the present invention.
Fig. 2 is a partial cross-sectional view of the vicinity of the chamber of the roller kiln, as viewed from the side.
Fig. 3 is a partial cross-sectional view of the vicinity of the chamber of the roller kiln, as viewed from the front.
Description of the symbols
1 roller kiln
2. 3 atmosphere gas introduction path
4. 5 insulating layer
41. 51 first thermal insulation layer
42. 52 second thermal insulation layer
43. 53 chamber
44. 54 outer flow path
45. 55 inner flow path
46 first communication port
And 47 a second communication port.
Detailed Description
Hereinafter, an embodiment of the roller kiln according to the present invention will be described with reference to the drawings. The present invention is not limited to the illustrated embodiments, and design changes can be made arbitrarily without departing from the scope of the technical scope described in the claims.
First, an outline of the roller kiln 1 according to the present invention will be described with reference to fig. 1 to 3. The roller kiln 1 includes atmosphere gas introduction passages 2 and 3 for introducing an atmosphere gas such as oxygen or nitrogen into the furnace. The roller kiln 1 further includes: chambers 43 and 53 formed inside the heat-insulating layers 4 and 5 of the roller kiln 1; outer passages 44, 54 formed in the first heat insulating layers 41, 51 on the furnace outer side with respect to the chambers 43, 53, and communicating with the chambers 43, 53 from a supply source of an atmosphere gas outside the furnace; and inner passages 45, 55 formed in the second heat insulating layer 42, 52 on the furnace inner side with respect to the chambers 43, 53, communicating from the chambers 43, 53 to the furnace, and including the outer passages 44, 54, the chambers 43, 53 and the inner passages 45, 55, and forming the atmosphere gas introduction passages 2, 3. The chambers 43, 53 have a larger volume than the outer passages 44, 54 and the inner passages 45, 55.
In the present embodiment, the example in which the atmosphere gas introduction passages 2 and 3 are formed in the heat insulating layer 4 on the side wall of the furnace and the heat insulating layer 5 on the bottom surface of the furnace is shown, but the atmosphere gas introduction passages may be formed only in one of the side wall of the furnace and the bottom surface of the furnace. In addition, known fire bricks and the like can be used for the heat insulating layers 4 and 5. The first thermal insulation layers 41 and 51 and the second thermal insulation layers 42 and 52 may be made of the same material or different materials. While fig. 2 and 3 show an example in which the upper surface and the lower surface of the cavity 43 are formed by the refractory bricks of the first heat insulation layer 41, the upper surface and the lower surface of the cavity 43 may be formed by the refractory bricks of the second heat insulation layer 42.
In the roller kiln 1 according to the present embodiment, a plurality of inner flow passages 45 and 55 are formed in the second heat insulating layer 42 and 52. As shown in fig. 1, the roller kiln 1 includes rollers R serving as a conveyance path, heating devices H disposed above and below the conveyance path, a thermocouple T for measuring the temperature in the furnace, and the like. In general, since these devices are provided on the outer wall of the roller kiln 1, the locations where the atmosphere gas introduction passages 2 and 3 are installed are limited, but since the roller kiln 1 according to the present embodiment includes the chambers 43 and 53, for example, a plurality of inner passages 45 and 55 can be provided for 1 outer passage 44 and 54, and the degree of freedom in designing the atmosphere gas introduction passages 2 and 3 is improved.
As shown in fig. 2, in the roller kiln 1, a plurality of inner flow paths 45 are arranged in parallel in the longitudinal direction x of the roller kiln 1 and in parallel in the height direction Y of the roller kiln 1. The direction in which the plurality of inner channels 45 are arranged in parallel may be either the longitudinal direction x or the height direction Y. By arranging the inner flow paths 45 in parallel in the height direction Y, the inner flow paths 45 can be arranged, for example, with aiming at a gap in the vertical direction of the saggars S stacked in multiple stages. By disposing the inner flow path 45 at a gap in the vertical direction of the saggars S, ventilation between the overlapped saggars S can be performed more efficiently. Fig. 2 is a cross-sectional view taken along the M-M direction in fig. 3.
As shown in fig. 1, the roller kiln 1 may be arranged such that a plurality of inner flow passages 55 are arranged in parallel in the width direction Z of the roller kiln 1. By arranging the inner flow paths 55 in parallel in the width direction Z, the inner flow paths 55 can be arranged so as to be aligned with the gaps in the width direction of the saggars S arranged in a plurality of rows, for example. By disposing the inner flow paths 55 at the gaps in the width direction of the saggars S, ventilation between adjacent saggars S can be performed more efficiently.
As shown in fig. 2, the ratio of the cross-sectional area of the first communication port 46 that communicates the outer flow path 44 with the chamber 43 to the cross-sectional area of the second communication port 47 that communicates the inner flow path 45 with the chamber 43 (the value of a/B when the cross-sectional area of the first communication port 46 is a and the cross-sectional area of the second communication port 47 is B) is preferably 1 or more and 5 or less. If the ratio is less than 1, the flow rate of the atmosphere gas discharged from the inner passage 45 into the furnace becomes too low. On the other hand, if the ratio is greater than 5, the flow rate of the atmosphere gas discharged from the inner passage 45 into the furnace becomes too high. Further, the ratio of the cross-sectional area of the first communication port that communicates the outer flow path 54 with the chamber 53 to the cross-sectional area of the second communication port that communicates the inner flow path 55 with the chamber 53 is also preferably 1 or more and 5 or less.
Further, the volume of the chambers 43, 53 is preferably 1500cm 3 Above and 5000cm 3 The following. If the volume of the chambers 43, 53 is less than 1500cm 3 There is a possibility that the atmosphere gas cannot be sufficiently preheated by the atmosphere gas introduction passages 2 and 3. On the other hand, if the volume of the chambers 43, 53 is greater than 5000cm 3 This is disadvantageous in terms of strength and heat insulating performance of the heat insulating layers 4 and 5.
Further, the ratio of the thickness of the first heat insulation layer to the thickness of the second heat insulation layer (C/D value when the thickness of the first heat insulation layer in the Z direction is C and the thickness of the second heat insulation layer in the Z direction is D as shown in fig. 2) is preferably 0.5 or more and 2.5 or less. If this ratio is less than 0.5, the positions of the chambers 4 and 5 are too close to the outside of the furnace, which is disadvantageous in preheating the atmosphere gas. On the other hand, if the ratio is greater than 2.5, the positions of the chambers 4 and 5 are too close to the inside of the furnace, and the flow rate in the inner flow path becomes uneven.
According to the roller kiln 1 of the present embodiment, the atmosphere gas introduction passages 2 and 3 are formed to include the outer passages 44 and 54, the chambers 43 and 53, and the inner passages 45 and 55. Since the atmosphere gas introduction passages 2 and 3 are provided with the chambers 43 and 53, the residence time of the atmosphere gas in the atmosphere gas introduction passages 43 and 53 can be increased, and the atmosphere gas can be preheated more reliably. Further, since the number of the outer passages 44 and 54 limited in the installation location is reduced, and the plurality of inner passages 45 and 55 can be freely provided in the chambers 43 and 53, the degree of freedom in designing the atmosphere gas introduction passages 2 and 3 can be increased. Therefore, the inner flow paths 45 and 55 can be easily arranged between the saggars.
Claims (8)
1. A roller kiln provided with an atmosphere gas introduction passage for introducing an atmosphere gas into a furnace, comprising:
a chamber formed inside the heat insulating layer of the roller kiln;
an outer flow path formed in the first heat insulating layer on the outer side of the furnace with respect to the chamber, the outer flow path communicating with the chamber from an atmosphere gas supply source outside the furnace; and
an inner flow path formed in the second heat insulating layer on the inner side of the furnace with respect to the chamber and communicating with the inside of the furnace from the chamber,
an atmosphere gas introduction passage is formed including the outer passage, the chamber, and the inner passage.
2. The roller kiln according to claim 1,
the second heat insulating layer has a plurality of the inner flow paths formed therein.
3. The roller kiln according to claim 2,
the plurality of inner flow paths are arranged in parallel in the longitudinal direction of the roller kiln.
4. The roller kiln according to claim 2,
the chamber is arranged on the heat insulating layer of the side wall of the roller kiln,
the plurality of inner flow paths are arranged in parallel in the height direction of the roller kiln.
5. The roller kiln according to claim 2,
the chamber is arranged on the heat insulating layer at the bottom of the roller kiln,
the plurality of inner flow paths are arranged in parallel in the width direction of the roller kiln.
6. The roller kiln according to any one of claims 1 to 5,
the ratio of the cross-sectional area of a first communication port that communicates the outer flow path with the chamber to the cross-sectional area of a second communication port that communicates the inner flow path with the chamber is 1 or more and 5 or less.
7. Roller kiln according to any one of claims 1 to 5,
the volume of the chamber is 1500cm 3 Above and 5000cm 3 The following.
8. Roller kiln according to any one of claims 1 to 5,
the ratio of the thickness of the first heat-insulating layer to the thickness of the second heat-insulating layer is 0.5 to 2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222800688.4U CN218583750U (en) | 2022-10-24 | 2022-10-24 | Roller kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222800688.4U CN218583750U (en) | 2022-10-24 | 2022-10-24 | Roller kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218583750U true CN218583750U (en) | 2023-03-07 |
Family
ID=85375112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222800688.4U Active CN218583750U (en) | 2022-10-24 | 2022-10-24 | Roller kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218583750U (en) |
-
2022
- 2022-10-24 CN CN202222800688.4U patent/CN218583750U/en active Active
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