CN114993044A - Roller hearth type controllable atmosphere heating furnace - Google Patents
Roller hearth type controllable atmosphere heating furnace Download PDFInfo
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- CN114993044A CN114993044A CN202210670954.8A CN202210670954A CN114993044A CN 114993044 A CN114993044 A CN 114993044A CN 202210670954 A CN202210670954 A CN 202210670954A CN 114993044 A CN114993044 A CN 114993044A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 191
- 239000000463 material Substances 0.000 claims abstract description 23
- 230000007704 transition Effects 0.000 claims description 92
- 238000007599 discharging Methods 0.000 claims description 19
- 239000000523 sample Substances 0.000 claims description 16
- 238000004320 controlled atmosphere Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 abstract description 20
- 238000005192 partition Methods 0.000 description 37
- 238000000034 method Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids or removable covers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
Abstract
The embodiment of the invention provides a roller-hearth type controllable atmosphere heating furnace, which relates to the technical field of heat treatment and comprises a heating furnace body and a roller-hearth type material conveying row, wherein a ventilation chamber and a heating chamber for heating a treatment product are arranged in the heating furnace body. Compared with the prior art, the roller-hearth type controllable atmosphere heating furnace provided by the invention can slow down the phenomenon that a large amount of gas in the furnace overflows, avoid the influence of opening a door on the atmosphere in the furnace by feeding, and ensure the quality of heat treatment products.
Description
Technical Field
The invention relates to the technical field of heat treatment, in particular to a roller-hearth type controllable atmosphere heating furnace.
Background
The roller hearth type heating furnace is widely used in the heat treatment process, and is particularly suitable for heat treatment of large-batch products such as bearings, automobile parts and the like; however, the existing roller-hearth heating furnace frequently opens the door during feeding, so that a large amount of gas in the furnace overflows, the atmosphere in the furnace is influenced, and the quality of heat treatment products is very easy to cause unstable.
Disclosure of Invention
The invention aims to provide a roller-hearth type controlled atmosphere heating furnace which can relieve the phenomenon of large-amount overflow of gas in the furnace, avoid the influence of opening a feeding door on the atmosphere in the furnace and ensure the quality of heat-treated products.
Embodiments of the invention may be implemented as follows:
in a first aspect, the invention provides a roller-hearth type controllable atmosphere heating furnace, which comprises a heating furnace body and a roller-hearth type material conveying row, wherein a ventilating chamber and a heating chamber for heating a treatment product are arranged in the heating furnace body, the ventilating chamber is positioned on a feeding side of the heating chamber, the roller-hearth type material conveying row penetrates through the ventilating chamber and the heating chamber and is used for conveying the treatment product into the ventilating chamber and the heating chamber from the outside in sequence, a feeding door is arranged on one side of the ventilating chamber, which is far away from the heating chamber, a feeding hole is further arranged on one end of the heating furnace body, the feeding door is used for opening or closing the feeding hole, a first intermediate furnace door is arranged between the ventilating chamber and the heating chamber and is used for conducting or isolating the ventilating chamber and the heating chamber, and a discharging door is arranged on one end of the heating chamber, which is far away from the ventilating chamber, and the other end of the heating furnace body is provided with a discharge hole, the discharge door is used for opening or closing the discharge hole, wherein the feeding door is linked with the first middle furnace door and is opened by one.
In an alternative embodiment, a first transition pocket is disposed between the air exchange chamber and the heating chamber, a side of the first transition pocket near the air exchange chamber is provided with a first pocket opening, a side of the first transition pocket near the heating chamber is provided with a second pocket opening, the first pocket opening and the second pocket opening are correspondingly disposed, the roller-bottom material conveying row passes through the first pocket opening and the second pocket opening to convey the processed product from the air exchange chamber to the heating chamber, and the first intermediate oven door is movably disposed in the first transition pocket and is used for opening or closing the second pocket opening.
In an optional implementation manner, the first transition pocket comprises a first transition partition plate and a second transition partition plate, the first transition partition plate and the second transition partition plate are arranged at a front-rear interval, the first pocket opening is formed in the first transition partition plate, the second pocket opening is formed in the second transition partition plate, and the first intermediate oven door is movably arranged between the first transition partition plate and the second transition partition plate.
In an alternative embodiment, a second intermediate oven door is further disposed at an end of the heating chamber away from the ventilation chamber, and the second intermediate oven door is spaced from the discharge door for communicating or isolating the heating chamber and the discharge opening.
In an optional embodiment, a second transition pocket is further disposed at an end of the heating chamber away from the ventilation chamber, a third pocket opening is disposed at a side of the second transition pocket close to the heating chamber, a fourth pocket opening is disposed at a side of the second transition pocket close to the discharge port, the third pocket opening and the fourth pocket opening are correspondingly disposed, the roller-bottom material conveying row passes through the third pocket opening and the fourth pocket opening to convey the processed product from the heating chamber to the discharge port, and the second intermediate oven door is movably disposed in the second transition pocket and is used for opening or closing the third pocket opening.
In an optional implementation manner, the second transition pocket includes a third transition partition plate and a fourth transition partition plate, the third transition partition plate and the fourth transition partition plate are arranged at a front-rear interval, an opening of the third pocket is formed in the third transition partition plate, an opening of the fourth pocket is formed in the fourth transition partition plate, and the second intermediate oven door is movably arranged between the third transition partition plate and the fourth transition partition plate.
In an optional embodiment, the roller-hearth type controlled atmosphere heating furnace further comprises a dripping control device, and the dripping control device is communicated with the heating chamber and is used for dripping the atmosphere raw material into the heating chamber.
In an optional embodiment, the roller-hearth type controlled atmosphere heating furnace further includes a furnace atmosphere probe, the furnace atmosphere probe extends into the heating chamber and is used for detecting the atmosphere content in the heating chamber, the instillation control device is electrically connected with the furnace atmosphere probe, and the instillation control device is further used for controlling the instillation amount of the atmosphere raw material according to the atmosphere content.
In an alternative embodiment, the heating furnace body is further provided with an atmosphere stirring fan, and the atmosphere stirring fan partially extends into the heating chamber and is used for stirring the gas in the heating chamber.
In an alternative embodiment, a heating element is further disposed in the heating chamber, and the heating element is used for heating the gas in the heating chamber to make the heating chamber reach a preset heating temperature.
The beneficial effects of the embodiment of the invention include, for example:
the invention provides a roller-hearth type controllable atmosphere heating furnace, wherein a ventilation chamber and a heating chamber for heating a treatment product are arranged in a heating furnace body, the ventilation chamber is positioned on the feeding side of the heating chamber, and a roller-hearth type material conveying exhaust penetrates through the ventilation chamber and the heating chamber and is used for conveying the treatment product into the ventilation chamber and the heating chamber from the outside in sequence. The heating furnace comprises a heating chamber, a ventilating chamber, a feeding door, a first middle furnace door, a discharging opening, a first middle furnace door, a discharging opening, a feeding door and a heating furnace body. During actual feeding, the additionally arranged ventilation chamber and the first middle furnace door are used, when the feeding door is opened for feeding, the first middle furnace door is in a closed state, so that overflowed furnace gas is only furnace gas in the ventilation chamber, and the furnace gas in the rear heating chamber is not influenced, thereby slowing down the phenomenon that a large amount of gas in the furnace overflows. Compared with the prior art, the roller-hearth type controllable atmosphere heating furnace provided by the invention can slow down the phenomenon that a large amount of gas in the furnace overflows, avoid the influence of opening a door on the atmosphere in the furnace by feeding, and ensure the quality of heat treatment products.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 a roller hearth furnace according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a front end partial structure of a roller hearth type controlled atmosphere heating furnace according to a first embodiment of the present invention;
fig. 3 is a schematic view of a rear end partial structure of a roller hearth type controlled atmosphere heating furnace according to a first embodiment of the present invention.
Icon: 100-roller hearth type controlled atmosphere heating furnace; 110-a heating furnace body; 120-roller bottom type material conveying row; 130-a ventilation chamber; 131-a feed gate; 133-feed inlet; 135-a first intermediate oven door; 140-a heating chamber; 141-a discharge hole; 143-discharge doors; 145-a second intermediate oven door; 150-a first transition household bag; 151-first house bag opening; 153-second household bag opening; 155-a first transition barrier; 157-a second transition baffle; 160-a second transition house bag; 161-third house bag opening; 163-fourth household bag opening; 165-a third transition barrier; 167-a fourth transition barrier; 170-a drip control device; 180-furnace atmosphere probe; 190-atmosphere stirring fan.
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 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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the present invention is used to usually place, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
As disclosed in the background art, the roller hearth furnace is widely used in the heat treatment process, and is particularly suitable for heat treatment of large-scale products such as bearings, automobile parts and the like; however, the existing roller-hearth heating furnace causes a large amount of gas in the furnace to overflow due to frequent opening of the door; and the raw materials of the furnace atmosphere are introduced in fixed quantity, so that the furnace atmosphere is unstable, and the quality of heat treatment products is easy to be unstable.
In order to solve the above problems, the present invention provides a roller-hearth type controlled atmosphere heating furnace, and it should be noted that the features in the embodiments of the present invention may be combined with each other without conflict.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Referring to fig. 1 to fig. 3, the roller hearth type controlled atmosphere heating furnace 100 provided in this embodiment can reduce a large amount of gas in the furnace from overflowing, avoid the influence of the door opening of the feeding material on the atmosphere in the furnace, and ensure the quality of the heat-treated product.
The controllable atmosphere heating furnace at the bottom of the roller provided by this embodiment includes a heating furnace body 110 and a roller-bottom material conveying row 120, a ventilating chamber 130 and a heating chamber 140 for heating the processing products are provided in the heating furnace body 110, the ventilating chamber 130 is located at the feeding side of the heating chamber 140, the roller-bottom material conveying row 120 penetrates through the ventilating chamber 130 and the heating chamber 140 for sequentially conveying the processing products into the ventilating chamber 130 and the heating chamber 140 from the outside, a feeding door 131 is provided at a side of the ventilating chamber 130 away from the heating chamber 140, a feeding opening 133 is further provided at one end of the heating furnace body 110, the feeding door 131 is used for opening or closing the feeding opening 133, a first intermediate furnace door 135 is provided between the ventilating chamber 130 and the heating chamber 140, the first intermediate furnace door 135 is used for conducting or isolating the ventilating chamber 130 and the heating chamber 140, a discharging door 143 is provided at one end of the heating chamber 140 away from the ventilating chamber 130, and a discharging opening 141 is provided at the other end of the heating furnace body 110, the discharging door 143 is used to open or close the discharging port 141, wherein the feeding door 131 is linked with the first middle oven door 135 and is selectively opened.
In this embodiment, the roller-bottom material conveying row 120 can be conveyed by conveying rollers, and the to-be-processed material can be conveyed from the outside into the ventilating chamber 130 and then conveyed from the ventilating chamber 130 into the heating chamber 140 for heating. In the actual feeding process, through the additionally arranged ventilation chamber 130 and the first middle furnace door 135, when the feeding door 131 is opened for feeding, the first middle furnace door 135 is in a closed state, so that the overflowed furnace gas is only the furnace gas in the ventilation chamber 130, and the furnace gas in the rear-side heating chamber 140 is not affected, thereby relieving the phenomenon that a large amount of furnace gas overflows.
It should be noted that, in this embodiment, the linkage of the feeding door 131 and the first intermediate door 135 means that the driving structures of the feeding door 131 and the first intermediate door 135 are linked, that is, it can be ensured that the first intermediate door 135 is in a closed state when the feeding door 131 is opened, and conversely, when the first intermediate door 135 is opened, the feeding door 131 is also in a closed state. Therefore, the ventilation chamber 130 can play a transition role, and the phenomenon that a large amount of furnace gas overflows due to the direct conduction of the heating chamber 140 and the external space is avoided.
In this embodiment, a first transition user bag 150 is disposed between the ventilation chamber 130 and the heating chamber 140, a first user bag opening 151 is disposed on a side of the first transition user bag 150 close to the ventilation chamber 130, a second user bag opening 153 is disposed on a side of the first transition user bag 150 close to the heating chamber 140, the first user bag opening 151 and the second user bag opening 153 are correspondingly disposed, the roller-bottom material conveying row 120 passes through the first user bag opening 151 and the second user bag opening 153 to convey the processing products from the ventilation chamber 130 to the heating chamber 140, and the first intermediate oven door 135 is movably disposed in the first transition user bag 150 and is used for opening or closing the second user bag opening 153.
It should be noted that, in the present embodiment, the volume of the air exchange chamber 130 is small, so the first transition pocket 150 is disposed near the inlet 133, and the first pocket opening 151 and the second pocket opening 153 are disposed opposite to each other, so as to facilitate the transportation of the processed products. The first transition user bag 150 can partition the inner space of the heating furnace body 110 into the heating chamber 140 and the ventilating chamber 130, and the periphery of the first transition user bag 150 is attached to the inner wall of the heating furnace body 110, thereby achieving spatial isolation.
In this embodiment, the first transition pocket 150 includes a first transition partition 155 and a second transition partition 157, the first transition partition 155 and the second transition partition 157 are spaced front and back, the first pocket opening 151 is opened on the first transition partition 155, the second pocket opening 153 is opened on the second transition partition 157, and the first intermediate oven door 135 is movably disposed between the first transition partition 155 and the second transition partition 157. Specifically, the first transition partition 155 and the second transition partition 157 are made of heat insulating materials, which can perform a heat insulating function and avoid a large amount of heat dissipation.
In this embodiment, a second intermediate door 145 is further disposed on an end of the heating chamber 140 away from the ventilation chamber 130, and the second intermediate door 145 is spaced apart from the discharge door 143 for communicating or isolating the heating chamber 140 and the discharge port 141. Specifically, the second middle oven door 145 is linked with the discharge door 143, and the second middle oven door 145 is selectively opened from the discharge door 143, so that a large amount of oven gas can be prevented from escaping during discharging.
Further, a second transition pocket 160 is further disposed at an end of the heating chamber 140 away from the ventilation chamber 130, a third pocket opening 161 is disposed at a side of the second transition pocket 160 close to the heating chamber 140, a fourth pocket opening 163 is disposed at a side of the second transition pocket 160 close to the discharge port 141, the third pocket opening 161 and the fourth pocket opening 163 are correspondingly disposed, the roller-bottom material row passes through the third pocket opening 161 and the fourth pocket opening 163 to convey the processed products from the heating chamber 140 to the discharge port 141, and the second intermediate oven door 145 is movably disposed in the second transition pocket 160 and is used for opening or closing the third pocket opening 161. Specifically, there is a certain distance between the fourth household bag opening 163 and the discharge port 141, so that the processed product after being heated is transported a certain distance through the fourth household bag opening 163 and then discharged from the discharge port 141. During actual discharging, the discharging door 143 is firstly closed, the second intermediate furnace door 145 is opened, the processed product is driven by the roller-bottom material conveying row 120 to be discharged from the second intermediate furnace door 145 and to be conveyed to the position near the discharging port 141, the second intermediate furnace door 145 is closed at the moment, the discharging door 143 is opened, and then the processed product is discharged.
The second transition household bag 160 comprises a third transition partition plate 165 and a fourth transition partition plate 167, the third transition partition plate 165 and the fourth transition partition plate 167 are arranged at intervals in the front-back direction, a third household bag opening 161 is formed in the third transition partition plate 165, a fourth household bag opening 163 is formed in the fourth transition partition plate 167, and the second intermediate furnace door 145 is movably arranged between the third transition partition plate 165 and the fourth transition partition plate 167. Specifically, the third transition partition 165 and the fourth transition partition 167 are also made of a heat insulating material, so that a heat insulating effect can be achieved, and a large amount of heat can be prevented from being dissipated.
Further, the roller-hearth furnace 100 further includes a drip control device 170 and a furnace atmosphere probe 180, and the drip control device 170 is in communication with the heating chamber 140 and is configured to drip an atmosphere material into the heating chamber 140. Specifically, the drip control device 170 is connected to an external atmosphere pipe so that the heat treatment atmosphere can be introduced into the heating chamber 140 by means of drip, and the conventional drip atmosphere structure can be referred to for the specific manner and principle of the drip atmosphere. The furnace atmosphere probe 180 extends into the heating chamber 140 and is used for detecting the atmosphere content in the heating chamber 140, the instillation control device 170 is electrically connected with the furnace atmosphere probe 180, and the instillation control device 170 is also used for controlling the instillation amount of the atmosphere raw material according to the atmosphere content.
In this embodiment, by adopting a real-time linkage control mode between the instillation control device 170 and the furnace atmosphere probe 180, the instillation control device 170 can control the input amount of the atmosphere raw material according to the feedback value of the furnace atmosphere probe 180, so that the furnace atmosphere reaches a stable value, and the furnace atmosphere is ensured not to be shifted greatly. In the specific control, a control quantity introduction method can be adopted: when the value fed back by the furnace atmosphere probe 180 changes greatly, the instillation control device 170 intervenes to control the instillation amount of the atmosphere raw material, and the furnace atmosphere probe 180 and the instillation control device 170 are in a real-time linkage control mode, so that the atmosphere in the furnace reaches a stable state, and the heating quality of the heating chamber 140 to the workpiece to be processed is further improved.
In this embodiment, the heating furnace body 110 is further provided with an atmosphere stirring fan 190, and the atmosphere stirring fan 190 partially extends into the heating chamber 140 for stirring the gas in the heating chamber 140. By providing the atmosphere agitating fan 190, the gas in the heating chamber 140 can be sufficiently flowed, so that the temperature distribution in the heating chamber 140 is more uniform, and the improvement of the heat treatment quality is more facilitated. Preferably, in the present embodiment, there are two atmosphere stirring fans 190, and the two atmosphere stirring fans 190 are spaced apart from each other, so that the gas in the heating chamber 140 can be further stirred.
In this embodiment, a heating member (not shown) is further disposed in the heating chamber 140, and the heating member is used for heating the gas in the heating chamber 140 to a preset heating temperature in the heating chamber 140. Specifically, the heating member may be a conventional heating device such as a quartz heating tube or a burner.
The roller hearth type controlled atmosphere heating furnace 100 provided by the embodiment realizes the prevention of a large amount of furnace gas overflow during feeding by combining the feeding door 131, the scavenging chamber 130 and the first intermediate furnace door 135, and specifically, when the feeding door 131 is opened and feeding is needed, the first intermediate furnace door 135 is in a closed state, so that the furnace gas overflow in the heating chamber 140 is isolated; when the treatment product enters the air exchange chamber 130, the feeding door 131 is closed; when the processing product needs to enter the heating chamber 140, the first middle furnace door 135 is opened, and the processing product enters the heating chamber 140 for heat treatment. When the processed product is required to be discharged after being finished, the second middle furnace door 145 is opened first, and when the processed product approaches the discharge door 143, the discharge door 143 is opened again, and the processed product is discharged; when the processed product passes through the second middle oven door 145, the second middle oven door 145 is closed first, and then the discharge door 143 is closed, so as to reduce the overflow of the oven gas in the heating chamber 140.
In addition, for the atmosphere introduction scheme, the present example adopts a controlled amount introduction method; when the value fed back by the furnace atmosphere probe 180 changes greatly, the drip control device 170 intervenes to control the drip amount of the atmosphere raw material, and rapidly stabilizes the furnace atmosphere under the strong stirring of the atmosphere stirring fan 190; and the furnace atmosphere probe 180 and the drip control device 170 are in a real-time linkage control mode, so that the atmosphere in the furnace is in a stable state for a long time.
In summary, in the roller-hearth type controlled atmosphere heating furnace 100 according to the present embodiment, the ventilating chamber 130 and the heating chamber 140 for heating the processing products are provided in the heating furnace body 110, the ventilating chamber 130 is located on the feeding side of the heating chamber 140, and the roller-hearth material conveying row 120 penetrates through the ventilating chamber 130 and the heating chamber 140 to sequentially convey the processing products from the outside to the ventilating chamber 130 and the heating chamber 140. A feeding door 131 is arranged on one side of the ventilating chamber 130 far away from the heating chamber 140, a feeding port 133 is further arranged at one end of the heating furnace body 110, the feeding door 131 is used for opening or closing the feeding port 133, a first intermediate furnace door 135 is further arranged between the ventilating chamber 130 and the heating chamber 140, the first intermediate furnace door 135 is used for conducting or isolating the ventilating chamber 130 and the heating chamber 140, a discharging door 143 is arranged at one end of the heating chamber 140 far away from the ventilating chamber 130, a discharging port 141 is arranged at the other end of the heating furnace body 110, the discharging door 143 is used for opening or closing the discharging port 141, and the feeding door 131 is linked with the first intermediate furnace door 135 and is alternatively opened. In the actual feeding process, through the additionally arranged ventilation chamber 130 and the first middle furnace door 135, when the feeding door 131 is opened for feeding, the first middle furnace door 135 is in a closed state, so that the overflowed furnace gas is only the furnace gas in the ventilation chamber 130, and the furnace gas in the rear-side heating chamber 140 is not affected, thereby relieving the phenomenon that a large amount of furnace gas overflows. In addition, the controlled amount introduction method is realized by using the furnace atmosphere probe 180 and the instillation control device 170, so that the furnace atmosphere can reach a long-term stable state, and the improvement of the heat treatment quality is facilitated.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The roller-hearth type controllable atmosphere heating furnace is characterized by comprising a heating furnace body and a roller-hearth type material conveying row, wherein a ventilating chamber and a heating chamber for heating a treatment product are arranged in the heating furnace body, the ventilating chamber is positioned on the feeding side of the heating chamber, the roller-hearth type material conveying row penetrates through the ventilating chamber and the heating chamber and is used for sequentially feeding the treatment product into the ventilating chamber and the heating chamber from the outside, a feeding door is arranged on one side, away from the heating chamber, of the ventilating chamber, a feeding hole is further arranged at one end of the heating furnace body and is used for opening or closing the feeding hole, a first middle furnace door is arranged between the ventilating chamber and the heating chamber and is used for conducting or isolating the ventilating chamber and the heating chamber, and a discharging door is arranged at one end, away from the ventilating chamber, of the heating chamber, and the other end of the heating furnace body is provided with a discharge hole, the discharge door is used for opening or closing the discharge hole, wherein the feeding door is linked with the first middle furnace door and is opened by one.
2. The roller hearth furnace according to claim 1, wherein a first transition pocket is disposed between the ventilating chamber and the heating chamber, a side of the first transition pocket adjacent to the ventilating chamber is provided with a first pocket opening, a side of the first transition pocket adjacent to the heating chamber is provided with a second pocket opening, the first pocket opening and the second pocket opening are correspondingly disposed, the roller hearth material transfer row passes through the first pocket opening and the second pocket opening to transfer the treatment products from the ventilating chamber to the heating chamber, and the first intermediate furnace door is movably disposed in the first transition pocket and is configured to open or close the second pocket opening.
3. The roller hearth controlled atmosphere furnace according to claim 2, wherein said first transition pocket includes a first transition baffle and a second transition baffle, said first transition baffle and said second transition baffle are spaced forward and backward, said first pocket opening is formed in said first transition baffle, said second pocket opening is formed in said second transition baffle, and said first intermediate furnace door is movably disposed between said first transition baffle and said second transition baffle.
4. The roller hearth furnace according to claim 1, wherein a second intermediate furnace door is provided at an end of said heating chamber remote from said ventilating chamber, said second intermediate furnace door being spaced from said discharge door for opening or closing said heating chamber and said discharge port.
5. The roller-hearth controlled atmosphere heating furnace according to claim 4, wherein a second transition pocket is further disposed at an end of the heating chamber away from the ventilating chamber, a third pocket opening is disposed at a side of the second transition pocket close to the heating chamber, a fourth pocket opening is disposed at a side of the second transition pocket close to the discharging port, the third pocket opening and the fourth pocket opening are correspondingly disposed, the roller-hearth material conveying row passes through the third pocket opening and the fourth pocket opening to convey the processed product from the heating chamber to the discharging port, and the second intermediate furnace door is movably disposed in the second transition pocket and is configured to open or close the third pocket opening.
6. The roller hearth controlled atmosphere furnace of claim 5, wherein said second transition pocket comprises a third transition baffle and a fourth transition baffle, said third transition baffle and said fourth transition baffle being spaced apart from each other in the front-to-back direction, said third pocket opening being formed in said third transition baffle, said fourth pocket opening being formed in said fourth transition baffle, said second intermediate furnace door being movably disposed between said third transition baffle and said fourth transition baffle.
7. A roller hearth type controlled atmosphere heating furnace according to any one of claims 1 to 6, further comprising a drip control device which is in communication with the heating chamber and is used for dripping an atmosphere material into the heating chamber.
8. The roller-hearth controllable atmosphere heating furnace according to claim 7, further comprising a furnace atmosphere probe extending into the heating chamber for detecting the atmosphere content in the heating chamber, wherein the drip control device is electrically connected to the furnace atmosphere probe, and the drip control device is further configured to control the drip amount of the atmosphere material according to the atmosphere content.
9. The roller hearth furnace according to claim 7, wherein an atmosphere stirring fan is further provided on said furnace body, said atmosphere stirring fan partially extending into said heating chamber for stirring gas in said heating chamber.
10. A roller hearth controlled atmosphere furnace according to any one of claims 1 to 6, wherein heating elements are further provided in said heating chamber for heating the gas in said heating chamber to a predetermined heating temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210670954.8A CN114993044A (en) | 2022-06-14 | 2022-06-14 | Roller hearth type controllable atmosphere heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210670954.8A CN114993044A (en) | 2022-06-14 | 2022-06-14 | Roller hearth type controllable atmosphere heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114993044A true CN114993044A (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210670954.8A Pending CN114993044A (en) | 2022-06-14 | 2022-06-14 | Roller hearth type controllable atmosphere heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114993044A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116793073A (en) * | 2023-07-14 | 2023-09-22 | 亚捷科技（唐山）股份有限公司 | One-way exhaust structure of protective atmosphere continuous heating furnace gas |
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| CN205807994U (en) * | 2016-07-05 | 2016-12-14 | 长兴捷瑞汽车零部件有限公司 | A kind of vacuum continuous drying plant |
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| CN215713203U (en) * | 2021-09-14 | 2022-02-01 | 上海嘉恒热处理有限公司 | Middle door detection device of metal heat treatment furnace |
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| CN201852433U (en) * | 2010-11-18 | 2011-06-01 | 苏州工业园区热处理设备厂有限公司 | Atmosphere control mesh band type resistor furnace |
| US20150102538A1 (en) * | 2012-07-04 | 2015-04-16 | Kanto Yakin Kogyo Co., Ltd. | Method for heat treatment, heat treatment apparatus, and heat treatment system |
| CN205807994U (en) * | 2016-07-05 | 2016-12-14 | 长兴捷瑞汽车零部件有限公司 | A kind of vacuum continuous drying plant |
| CN208430203U (en) * | 2018-07-19 | 2019-01-25 | 四川西南工业炉有限公司 | A kind of roller-bottom type medium temperature heat-treatment furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116793073A (en) * | 2023-07-14 | 2023-09-22 | 亚捷科技（唐山）股份有限公司 | One-way exhaust structure of protective atmosphere continuous heating furnace gas |
| CN116793073B (en) * | 2023-07-14 | 2024-02-06 | 亚捷科技（唐山）股份有限公司 | One-way exhaust structure of protective atmosphere continuous heating furnace gas |
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