CN210320142U - Air inlet device for high-temperature furnace - Google Patents
Air inlet device for high-temperature furnace Download PDFInfo
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- CN210320142U CN210320142U CN201921357092.3U CN201921357092U CN210320142U CN 210320142 U CN210320142 U CN 210320142U CN 201921357092 U CN201921357092 U CN 201921357092U CN 210320142 U CN210320142 U CN 210320142U
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- inlet pipe
- air distribution
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Abstract
The utility model provides an air inlet device for a high-temperature furnace, which comprises an air inlet pipe, an inner air distribution cap and an outer air distribution cover; the gas in the gas inlet pipe enters the first gas inlet channel through the gas outlet through hole in the gas inlet pipe, the gas in the first gas inlet channel enters the second gas inlet channel through the gas outlet through hole in the inner gas distribution cap, the gas in the second gas inlet channel enters the third gas inlet channel, and the gas in the third gas inlet channel enters the furnace chamber; this application is on the original counter bore's that is used for admitting air basis on the oven, has increased the third and has divided the gas structure, make gas divide the gas and bend the diversion through the cubic, make originally the gas that directly blows the hot area through this cubic divide the gas with bend the diversion block, transition and dispersion, effectively slowed down the air velocity, no longer produce the air current and erode, thereby the product in the hot area or the air current of spare part that cause because of gas directly blows among the tradition erode the damage, the life of high temperature furnace and spare part has been prolonged.
Description
Technical Field
The utility model belongs to the technical field of the high temperature furnace technique and specifically relates to an air inlet unit for high temperature furnace is related to.
Background
At present, a plurality of industries such as domestic heat treatment, photovoltaic and the like have high-temperature furnaces, wherein gas is needed to be used in the high-temperature furnaces in a plurality of fields such as brazing, crystal growth, high-temperature sintering and the like. The gas is introduced into the high-temperature furnace and needs to pass through the gas inlet, because the gas outside the high-temperature furnace is normal temperature, the temperature of the gas entering the high-temperature furnace can be increased, the volume of the gas rapidly expands, the gas can enter the hot area at a higher speed, because the speed is higher, the gas directly rushes into the hot area in the furnace, the gas flow scouring can be carried out on parts in the hot area, and in the past, the parts closer to the gas inlet can be corroded by the gas and damaged in an accelerated manner.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an air inlet unit for high temperature furnace.
For solving the above technical problem, the utility model provides a technical scheme does:
an air inlet device for a high-temperature furnace comprises an air inlet pipe, an inner air distribution cap and an outer air distribution cover;
a counter bore is formed in the furnace wall of the high-temperature furnace, and an internal thread is arranged on the inner wall surface of the counter bore;
the outer wall surface of the air inlet pipe is provided with external threads, the air inlet pipe is inserted into the counter bore, and the external threads on the air inlet pipe and the internal threads in the counter bore form threaded connection so as to be used for installing the air inlet device on the inner wall surface of the furnace wall;
the pipe wall of the air outlet end of the air inlet pipe is provided with a plurality of air outlet through holes for primary air distribution, the inner air distribution cap is sleeved at the top end of the air inlet pipe, the top end of the air inlet pipe is inserted into the inner air distribution cap, and the inner diameter of the inner air distribution cap is larger than the outer diameter of the air inlet pipe so as to form a first air inlet channel by a gap between the inner air distribution cap and the outer air distribution cap;
the side wall of the inner air distribution cap is provided with a plurality of air outlet through holes for secondary air distribution, the air outlet through holes on the inner air distribution cap are positioned at the bottom of the countersunk head part of the counter bore, and the inner diameter of the countersunk head part of the counter bore is larger than the outer diameter of the inner air distribution cap so as to form a second air inlet channel by a gap between the inner air distribution cap and the counter bore;
the top surface of the inner cover of the outer gas distribution cover covers the top surface of the outer cap of the inner gas distribution cap, the outer gas distribution cover is positioned outside the counter bore, the outer diameter of the outer gas distribution cover is larger than the inner diameter of the counter bore, and a gap is reserved between the outer gas distribution cover and the inner wall surface of the furnace wall to form a third gas inlet channel;
the inner wall surface of the air inlet pipe is provided with internal threads, the top wall of the inner air distribution cap is provided with a through hole, the outer air distribution cap is provided with a through hole, a stud of a bolt is sequentially inserted into the through hole in the inner air distribution cap, the through hole in the outer air distribution cap and the top opening of the air inlet pipe, and the bottom end of the stud of the bolt is fixed in the top opening of the air inlet pipe through threaded connection and insertion.
Preferably, the inner air distribution cap is in a shape of an inverted cup with only a bottom end open, and the inner air distribution cap comprises a cap top wall and a side wall.
Preferably, the outer gas distribution cover is a planar circular plate, a plurality of flow deflectors for gas distribution and flow guidance are arranged on the lower circular surface of the planar circular plate, the flow deflectors are uniformly distributed on the lower circular surface of the planar circular plate along the circumference, and the length and width surfaces of the flow deflectors are perpendicular to the lower circular surface of the planar circular plate.
The utility model provides an air inlet device for a high-temperature furnace, which comprises an air inlet pipe, an inner air distribution cap and an outer air distribution cover;
the gas in the gas inlet pipe enters the first gas inlet channel through the gas outlet through hole in the gas inlet pipe, the gas in the first gas inlet channel enters the second gas inlet channel through the gas outlet through hole in the inner gas distribution cap, the gas in the second gas inlet channel enters the third gas inlet channel, and the gas in the third gas inlet channel enters the furnace chamber;
the gas in the gas inlet pipe enters a first gas inlet channel through a gas outlet through hole in the gas inlet pipe, the gas is divided for the first time, the flowing direction of the gas flow is bent and changed for the first time, and the flowing direction of the gas in the gas inlet pipe is opposite to the flowing direction of the gas in the first gas inlet channel;
the gas in the first gas inlet channel enters a second gas inlet channel through a gas outlet through hole on the inner gas distribution cap, the gas is subjected to secondary gas distribution, the flowing direction of the gas flow is bent and changed for the second time, and the flowing direction of the gas in the first gas inlet channel is opposite to that of the gas in the second gas inlet channel;
the gas in the second gas inlet channel enters a third gas inlet channel, which is used for third gas distribution and is bent and turned for the third time in the flow direction of the gas flow, the flow direction of the gas in the second gas inlet channel is mutually vertical to the flow direction of the gas in the third gas inlet channel, and then the gas in the third gas inlet channel enters the furnace chamber;
this application is on the original counter bore's that is used for admitting air basis on the oven, has increased the third and has divided the gas structure, make gas divide the gas and bend the diversion through the cubic, make originally the gas that directly blows the hot area through this cubic divide the gas with bend the diversion block, transition and dispersion, effectively slowed down the air velocity, no longer produce the air current and erode, thereby the product in the hot area or the air current of spare part that cause because of gas directly blows among the tradition erode the damage, the life of high temperature furnace and spare part has been prolonged.
Drawings
FIG. 1 is a cross-sectional view of an axial center plane of a prior art air inlet structure for a high temperature furnace;
FIG. 2 is a schematic cross-sectional view of an axial center plane of a furnace wall-mounted air inlet device for a high-temperature furnace according to an embodiment of the present invention (the direction of the arrow in FIG. 2 represents the flow direction of the gas);
fig. 3 is a sectional view of an axial center plane of the air intake device for a high temperature furnace of fig. 2.
In the figure: 1 furnace wall, 101 counterbore, 1011 counterbore countersink;
2, an air inlet pipe, 201, an air outlet through hole on the air inlet pipe, and 202, a first air inlet channel;
3, an inner air-out cap, air-out through holes on the 301 inner air-out cap, 302 second air-in channels, 303 cap top wall and 304 side wall;
4, an outer air distributing cover, 401 a third air inlet channel and 402 a flow deflector;
5, bolts.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "axial", "radial", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are used in the orientation or positional relationship indicated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.
Referring to fig. 1 to 3, fig. 1 is a cross-sectional structural view of an axial center plane of a gas inlet structure for a high temperature furnace in the prior art; FIG. 2 is a schematic cross-sectional view of an axial center plane of a furnace wall-mounted air inlet device for a high-temperature furnace according to an embodiment of the present invention (the direction of the arrow in FIG. 2 represents the flow direction of the gas); fig. 3 is a sectional view of an axial center plane of the air intake device for a high temperature furnace of fig. 2.
The application provides an air inlet device for a high-temperature furnace, which comprises an air inlet pipe 2, an inner air distribution cap 3 and an outer air distribution cover 4;
a counter bore 101 is formed in the furnace wall 1 of the high-temperature furnace, and internal threads are arranged on the inner wall surface of the counter bore 101;
an external thread is arranged on the outer wall surface of the air inlet pipe 2, the air inlet pipe 2 is inserted into the counterbore 101, and the external thread on the air inlet pipe 2 and the internal thread in the counterbore 101 form threaded connection so as to be used for mounting the air inlet device on the inner wall surface of the furnace wall 1;
a plurality of air outlet through holes 201 for primary air distribution are formed in the pipe wall of the air outlet end of the air inlet pipe 2, the inner air distribution cap 3 is sleeved at the top end of the air inlet pipe 2, the top end of the air inlet pipe 2 is inserted into the inner air distribution cap 3, and the inner diameter of the inner air distribution cap 3 is larger than the outer diameter of the air inlet pipe 2 so as to form a first air inlet channel 202 by leaving a gap between the inner air distribution cap and the outer air distribution cap;
a plurality of air outlet through holes 301 for secondary air distribution are formed in the side wall 304 of the inner air distribution cap 3, the air outlet through holes 301 in the inner air distribution cap 3 are located at the bottom of the countersunk head portion 1011 of the counterbore 101, and the inner diameter of the countersunk head portion 1011 of the counterbore 101 is larger than the outer diameter of the inner air distribution cap 3 so as to form a second air inlet channel 302 by a gap between the inner air distribution cap and the outer air distribution cap;
the top surface of the inner cover of the outer gas distribution cover 4 covers the top surface of the outer cover of the inner gas distribution cap 3, the outer gas distribution cover 4 is positioned outside the counter bore 101, and the outer diameter of the outer gas distribution cover 4 is larger than the inner diameter of the counter bore 101 at the counter bore 1011, so that a gap is reserved between the outer gas distribution cover 4 and the inner wall surface of the furnace wall 1 to form a third gas inlet channel 401;
the inner wall surface of the air inlet pipe 2 is provided with internal threads, the cap top wall 303 of the inner air distribution cap 3 is provided with a through hole, the outer air distribution cap 4 is provided with a through hole, a stud of a bolt 5 is sequentially inserted into the through hole of the inner air distribution cap 3, the through hole of the outer air distribution cap 4 and the top opening of the air inlet pipe 2, and the bottom end of the stud of the bolt 5 is inserted and fixed in the top opening of the air inlet pipe 2 through threaded connection.
In one embodiment of the present application, the inner air distribution cap 3 is in the shape of a reversed cup with only a bottom end open, and the inner air distribution cap 3 includes a cap top wall 303 and a side wall 304.
In an embodiment of the present application, the outer air distributing cover 4 is a flat circular plate, a plurality of flow deflectors 402 for distributing air and guiding air are disposed on a lower circular surface of the flat circular plate, the plurality of flow deflectors 402 are uniformly distributed on the lower circular surface of the flat circular plate along a circumference, and a length and width surface of the flow deflectors 402 is perpendicular to the lower circular surface of the flat circular plate.
The utility model provides an air inlet device for a high temperature furnace, which comprises an air inlet pipe 2, an inner air distribution cap 3 and an outer air distribution cover 4;
the gas in the gas inlet pipe 2 enters the first gas inlet channel 202 through the gas outlet through hole 201 on the gas inlet pipe 2, the gas in the first gas inlet channel 202 enters the second gas inlet channel 302 through the gas outlet through hole 301 on the inner gas distribution cap 3, the gas in the second gas inlet channel 302 enters the third gas inlet channel 401, and the gas in the third gas inlet channel 401 enters the furnace chamber;
the gas in the gas inlet pipe 2 enters the first gas inlet channel 202 through the gas outlet through hole 201 on the gas inlet pipe 2, which is the first gas distribution and is the first bending and turning of the flow direction of the gas flow, and the flow direction of the gas in the gas inlet pipe 2 is opposite to the flow direction of the gas in the first gas inlet channel 202;
the gas in the first gas inlet channel 202 enters a second gas inlet channel 302 through a gas outlet through hole 301 on the inner gas distribution cap 3, the gas is divided for the second time, the flowing direction of the gas flow is bent and changed for the second time, and the flowing direction of the gas in the first gas inlet channel 202 is opposite to the flowing direction of the gas in the second gas inlet channel 302;
the gas in the second gas inlet channel 302 enters a third gas inlet channel 401, which is used for third gas distribution and is the third bending and turning of the flow direction of the gas flow, the flow direction of the gas in the second gas inlet channel 302 is perpendicular to the flow direction of the gas in the third gas inlet channel 401, and then the gas in the third gas inlet channel 401 enters the furnace chamber;
this application is on oven 1 original counter bore 101 basis that is used for admitting air, three gas separation structures have been increased, make gas divide the gas and bend the diversion through the cubic, make originally the gas that directly blows to the hot area through this cubic divide the gas with bend the diversion block, transition and dispersion, effectively slowed down the air velocity, no longer produce the air current and erode, thereby the product or the spare part's in the hot area that have reduced in the tradition and have directly blown because of gas air current that causes erode the damage, the life of high temperature furnace and spare part has been prolonged.
The method and the device not described in detail in the present invention are prior art and will not be described in detail.
The principles and embodiments of the present invention have been explained herein using specific embodiments, which are merely used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (3)
1. An air inlet device for a high-temperature furnace is characterized by comprising an air inlet pipe, an inner air distribution cap and an outer air distribution cover;
a counter bore is formed in the furnace wall of the high-temperature furnace, and an internal thread is arranged on the inner wall surface of the counter bore;
the outer wall surface of the air inlet pipe is provided with external threads, the air inlet pipe is inserted into the counter bore, and the external threads on the air inlet pipe and the internal threads in the counter bore form threaded connection so as to be used for installing the air inlet device on the inner wall surface of the furnace wall;
the pipe wall of the air outlet end of the air inlet pipe is provided with a plurality of air outlet through holes for primary air distribution, the inner air distribution cap is sleeved at the top end of the air inlet pipe, the top end of the air inlet pipe is inserted into the inner air distribution cap, and the inner diameter of the inner air distribution cap is larger than the outer diameter of the air inlet pipe so as to form a first air inlet channel by a gap between the inner air distribution cap and the outer air distribution cap;
the side wall of the inner air distribution cap is provided with a plurality of air outlet through holes for secondary air distribution, the air outlet through holes on the inner air distribution cap are positioned at the bottom of the countersunk head part of the counter bore, and the inner diameter of the countersunk head part of the counter bore is larger than the outer diameter of the inner air distribution cap so as to form a second air inlet channel by a gap between the inner air distribution cap and the counter bore;
the top surface of the inner cover of the outer gas distribution cover covers the top surface of the outer cap of the inner gas distribution cap, the outer gas distribution cover is positioned outside the counter bore, the outer diameter of the outer gas distribution cover is larger than the inner diameter of the counter bore, and a gap is reserved between the outer gas distribution cover and the inner wall surface of the furnace wall to form a third gas inlet channel;
the inner wall surface of the air inlet pipe is provided with internal threads, the top wall of the inner air distribution cap is provided with a through hole, the outer air distribution cap is provided with a through hole, a stud of a bolt is sequentially inserted into the through hole in the inner air distribution cap, the through hole in the outer air distribution cap and the top opening of the air inlet pipe, and the bottom end of the stud of the bolt is fixed in the top opening of the air inlet pipe through threaded connection and insertion.
2. The air inlet apparatus for a high temperature furnace as claimed in claim 1, wherein the inner air distribution cap is in the shape of a reversed cup having only a bottom end opened, and the inner air distribution cap includes a cap top wall and a side wall.
3. The air inlet device for the high temperature furnace as claimed in claim 1, wherein the outer air distributing cover is a planar circular plate, a plurality of guide vanes for air distribution and flow guiding are arranged on a lower circular surface of the planar circular plate, the plurality of guide vanes are uniformly distributed on the lower circular surface of the planar circular plate along a circumference, and a length and width surface of each guide vane is perpendicular to the lower circular surface of the planar circular plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357092.3U CN210320142U (en) | 2019-08-20 | 2019-08-20 | Air inlet device for high-temperature furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357092.3U CN210320142U (en) | 2019-08-20 | 2019-08-20 | Air inlet device for high-temperature furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210320142U true CN210320142U (en) | 2020-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921357092.3U Active CN210320142U (en) | 2019-08-20 | 2019-08-20 | Air inlet device for high-temperature furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210320142U (en) |
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2019
- 2019-08-20 CN CN201921357092.3U patent/CN210320142U/en active Active
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