CN219363744U - Furnace mouth sealing device of continuous heat treatment furnace - Google Patents
Furnace mouth sealing device of continuous heat treatment furnace Download PDFInfo
- Publication number
- CN219363744U CN219363744U CN202320291084.3U CN202320291084U CN219363744U CN 219363744 U CN219363744 U CN 219363744U CN 202320291084 U CN202320291084 U CN 202320291084U CN 219363744 U CN219363744 U CN 219363744U
- Authority
- CN
- China
- Prior art keywords
- movable plate
- plate
- strip
- furnace
- fixed plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Furnace Details (AREA)
Abstract
The utility model relates to a furnace mouth sealing device of a continuous heat treatment furnace, belonging to the field of metal processing and metallurgy. The device comprises a fixed plate, a movable plate and a baffle plate; the fixing plate is perpendicular to the advancing direction of the strip and is in sealing connection with the furnace body, and is provided with an opening which can pass through the strip, and the opening is similar to the strip in shape but larger in size; the movable plate is arranged at the outer side of the fixed plate, and a hole with the same cross section size as the strip is formed in the middle of the movable plate; the baffle is arranged on the outer side of the movable plate, and the baffle and the fixed plate enclose the movable plate in the middle so that the movable plate can only transversely move against the fixed plate; when in use, the strip continuously passes through the holes in the movable plate, and the fixed plate, the movable plate and the strip jointly separate the inner space and the outer space of the furnace mouth, so that the circulation of the gas and heat inside and outside the furnace mouth is prevented and reduced, and the furnace mouth is sealed. The device plays a role in effectively isolating the gas inside and outside the continuous heating furnace at the furnace mouth, and has the advantages of low manufacturing cost, simple structure, safety, reliability and convenient disassembly and assembly.
Description
Technical Field
The utility model relates to a furnace mouth sealing device of a continuous heat treatment furnace, belonging to the field of metal processing and metallurgy.
Background
The metallurgical industry often requires continuous heating of strip materials. The strip material enters from the front furnace mouth of the heating furnace, continuously passes through the heating zone, and then exits from the rear furnace mouth to be heated. Sometimes, various gases are introduced into the heating furnace to form an atmosphere with specific chemical properties to protect the environment. Therefore, the furnace mouth is an important device for realizing gas isolation and heat insulation loss inside and outside the furnace. Because the strip material has transverse relative movement with the furnace body when continuously passing through the furnace mouth, the transverse position of the strip material relative to the furnace mouth is not completely fixed, and a certain gap is needed between the fixed furnace mouth and the movable strip material in order to prevent the strip material from being scratched between the furnace mouth and the furnace mouth; on the other hand, in order to facilitate the installation and adjustment before the continuous operation of the strip, the shape of the furnace mouth is larger than the section of the strip, so that a circular seam exists between the furnace mouth and the strip, and a large amount of heat and gas in the furnace leak out, thereby causing the loss of shielding gas and energy. Therefore, the annular seam is reduced, and the sealing between the strip and the furnace mouth is increased, so that the sealing is an important measure for preventing the gas and heat in the furnace from leaking out.
The soft air curtain is hung between the furnace mouth and the strip material and can block the exchange of gas and heat inside and outside the heating furnace when the strip material continuously passes through. However, the sealing effect of the soft air curtain is limited, for example, when the belt material continuously passes in the horizontal direction, the soft air curtain at the lower part of the belt material is difficult to well play a role due to the influence of gravity.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a furnace mouth sealing device of a continuous heat treatment furnace, which can reduce the gap between a strip and a furnace mouth, reduce the loss of protective gas and heat in the continuous heat treatment furnace and achieve the aims of energy conservation and consumption reduction.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a furnace mouth sealing device of a continuous heat treatment furnace comprises a fixed plate, a movable plate, a baffle plate, a connecting spring and the like; the fixing plate is perpendicular to the advancing direction of the strip and is in sealing connection with the furnace body, an opening through which the strip can pass is formed in the fixing plate, and the opening is similar to the cross section of the strip but larger in size so as to prevent the strip from being scratched when the strip passes through the heating furnace and moves transversely; the movable plate is arranged on the outer side of the fixed plate and can move relatively against the fixed plate, and a hole with the same size as the cross section of the strip is formed in the middle of the movable plate; the baffle plate is arranged on the outer side of the movable plate, and the baffle plate and the fixed plate enclose the movable plate in the middle so that the movable plate can only transversely move along the fixed plate; when the furnace mouth sealing device works, the strip continuously passes through the shaped holes in the movable plate, and the fixed plate, the movable plate and the strip penetrating through the movable plate jointly separate the inner space and the outer space of the furnace mouth, so that the circulation of gas and heat inside and outside the furnace mouth is prevented and reduced, and the furnace mouth sealing is realized.
In the sealing device, the fixed plate is in sealing connection with the furnace body of the heat treatment furnace, the middle of the fixed plate is provided with the hole for passing the strip, the size of the hole in the fixed plate is more than 5mm larger than the outer edge size of the cross section of the strip, the specific size can be determined according to the specification of the strip and the transverse movement amount of the actual strip when the strip passes, and the purpose of the larger hole is to prevent the strip from being scratched when the strip transversely moves during the continuous heat treatment furnace.
In the sealing device, the middle of the movable plate is provided with the shaped hole with the same cross section size as the strip, the strip passes through the shaped hole during operation, and at the moment, the strip drives the movable plate to possibly move relative to the fixed plate, but the movable plate is always attached to the fixed plate to cover the opening in the middle of the fixed plate, so that the leakage and loss of heat and gas in the furnace are prevented.
In the sealing device, the geometric center of the strip is the same as the center of the movable plate type hole and coincides with the geometric center of the fixed plate hole in operation.
In the sealing device, the outer edge dimension of the movable plate is larger than the dimension of the opening in the fixed plate, so that the movable plate always covers the opening in the middle of the fixed plate when the movable plate moves transversely along with the belt material in the working process, and the outer edge dimension of the movable plate in the up-down, left-right directions is larger than the largest dimension of the fixed plate in the corresponding direction of the opening, namely, the dimension of the outer edge of the movable plate is larger than the largest dimension of the opening in the fixed plate by more than 10mm in the directions from the center of the hole to the front, back, left and right.
In terms of increasing the sealing effect, the closer the size of the hole in the middle of the movable plate is to the cross-sectional size of the strip, the less heat and gas exchange between the inside and outside of the furnace is, but when the cross-sectional size of the strip changes accidentally due to a joint or the like, the strip may get stuck when passing through the movable plate, and the movable plate is pulled out. The movable plate is made into an upper movable plate and a lower movable plate, namely the movable plate can be split into the upper movable plate and the lower movable plate, the whole movable plate is split along a horizontal line from the leftmost position of the middle type hole to the leftmost position of the movable plate, and the middle type hole is split along the horizontal line to the rightmost position of the movable plate to form the upper movable plate and the lower movable plate, the upper movable plate and the lower movable plate are respectively arranged on the fixed plate or the fixed part through springs, and the surrounding state of the upper movable plate and the lower movable plate is kept under the action of the springs and the like during operation. When the accidental irregular section of the strip passes through the movable plate, the upper movable plate and the lower movable plate are passively separated, and the strip can smoothly pass through. Of course, the separation of the upper and lower movable plates is also beneficial to the replacement of the movable plates and the installation and adjustment of the belt materials when the belt materials pass through the furnace body for the first time at the beginning of work.
In the sealing device, the baffle is arranged on the fixed plate, and the movable plate is enclosed between the baffle and the fixed plate, so that the movable plate can only transversely move along the fixed plate. The baffle is fixedly arranged on the outer side of the movable plate, and is used for enclosing the movable plate between the baffle and the fixed plate, when the belt material moves with the movable plate, the movable plate is limited to move in the advancing direction of the belt material, so that the movable plate can only move transversely against the fixed plate. When the movable plate is divided into an upper movable plate and a lower movable plate, the baffle plate can be divided into an upper baffle plate and a lower baffle plate, the upper baffle plate and the lower baffle plate are respectively and fixedly arranged on the fixed plate, and the upper movable plate and the lower movable plate are respectively enclosed between the upper baffle plate, the lower baffle plate and the fixed plate, so that the movable plate can only transversely move along the fixed plate.
In the sealing device, the movable plate is arranged on the fixed plate or the fixed part through the spring, and the spring is used for connecting the movable plate and the fixed part and keeping the enclosing state of the upper movable plate and the lower movable plate when the movable plate is the upper movable plate and the lower movable plate during working. For example, one end of the spring is connected to the upper or lower movable plate, and the other end is connected to the fixed plate or the upper and lower baffle plates, so that the upper and lower movable plates are pushed or pressed, and the enclosing state of the upper and lower movable plates to the strip is maintained when the strip passes. One end of the connecting spring is connected to the upper or lower movable plate, and the other end is connected to the fixed part, pushing or pressing the upper and lower movable plates to make the upper and lower movable plates always enclose the belt material.
When the device works, the belt material continuously passes through the shaped holes in the movable plate, and when the belt material drives the movable plate to transversely move relatively, the upper movable plate and the lower movable plate are always pressed on the belt material. Under the restriction of the baffle, the movable plate can only move along the fixed plate and always cover the opening in the fixed plate. Under the common blocking effect of the fixed plate, the movable plate and the cross section of the strip, the gas inside and outside the furnace can only communicate with the gap between the strip through the split joint between the upper movable plate and the lower movable plate and the gap between the movable plate type holes. These gaps are easy to be made tiny, so that the diffusion of gas and heat in the furnace to the outside of the furnace is reduced, and the sealing effect is achieved.
When the size of the strip material changes, the device can be used for a new strip material with a new specification by simply replacing the movable plate with the corresponding specification hole in most cases.
In the sealing device, the continuous heat treatment furnace is a continuous through type strip heating device.
The utility model has the advantages that:
the device of the utility model well plays a role in effectively isolating the gas inside and outside the continuous heating furnace at the furnace mouth, and the device has the advantages of low manufacturing cost, simple structure, safety, reliability and convenient disassembly and assembly.
Drawings
FIG. 1 is a schematic view of a furnace mouth sealing device of a continuous heating furnace.
The main reference numerals illustrate:
1 strip 2 fixing plate
3 open pore 4 upper movable plate
Lower baffle plate of lower movable plate 5 and lower baffle plate 6
7 upper baffle 8 spring
Detailed Description
The apparatus of the utility model will be described in detail below by taking as an example a continuous strip heating apparatus passing horizontally through the mouth of a furnace.
As shown in FIG. 1, the furnace mouth sealing device of the continuous heat treatment furnace of the present utility model is composed of a fixed plate 2, an upper movable plate 4 and a lower movable plate 5, a lower baffle 6 and an upper baffle 7, springs 8, etc. The fixed plate 2 is perpendicular to the advancing direction of the strip 1 and is in sealing connection with the furnace body, and the fixed plate 2 is in sealing connection with the furnace body so as to prevent gas from leaking out from between the fixed plate 2 and the furnace body. The fixing plate 2 is provided with an opening 3 which is similar to the shape of the strip material 1 but has a larger size, and the size of the opening 3 is 10mm larger than the outer edge size of the cross section of the strip material 1 in the height direction. In operation, the strip 1 is positioned in the middle of the opening 3, the opening 3 being larger in size to facilitate installation while preventing scratching of the strip 1 against the mounting plate 2 as it passes. A movable plate, an upper movable plate 4 and a lower movable plate 5 are arranged on the outer side of the fixed plate 2, and a hole with the same cross section size as the strip is formed in the middle of the movable plate. The movable plate is provided with a baffle plate, namely a lower baffle plate 6 and an upper baffle plate 7, and the baffle plate and the fixed plate 2 enclose the movable plate in the baffle plate and the fixed plate so that the movable plate can only transversely move against the fixed plate 2. The geometric center of the strip 1 is the same as the center of the movable plate type hole and coincides with the geometric center of the opening of the fixed plate 2 during operation. When the furnace mouth sealing device works, the strip 1 continuously passes through the shaped holes in the movable plate, the fixed plate 2, the movable plate and the strip 1 penetrating through the movable plate jointly separate the inner space and the outer space of the furnace mouth, so that the circulation of gas and heat inside and outside the furnace mouth is prevented and reduced, and the furnace mouth sealing is realized.
The movable plate is arranged in front of the fixed plate 2 and is formed by surrounding an upper movable plate 4 and a lower movable plate 5. The middle part of the movable plate is provided with a hole with the same shape as the cross section of the strip 1, and the hole is also a part of the boundary line between the upper movable plate 4 and the lower movable plate 5. On the whole movable plate, the movable plate is split along the horizontal line from the leftmost position of the middle hole to the leftmost position of the movable plate, and the movable plate is split along the horizontal line from the rightmost position of the middle hole to the rightmost position of the movable plate, so that an upper movable plate and a lower movable plate are formed, and the surrounding state of the upper movable plate and the lower movable plate is kept under the action of a spring 8 and the like during operation. The width and the height of the whole movable plate are 15mm larger than the maximum length and the height of the opening 3, so that when the movable plate is driven to transversely move relative to the fixed plate 2 by the belt materials in work, the movable plate always covers the opening 3, and the gas in the furnace is prevented from leaking out from between the upper movable plate 4 and the lower movable plate 5 and the fixed plate 2.
The baffle is arranged on the fixed plate 2, and the movable plate is enclosed between the baffle and the fixed plate 2, so that the movable plate can only transversely move along the fixed plate. The upper baffle 7 and the lower baffle 6 arranged on the fixed plate 2 are blocked in front of the upper movable plate 4 and the lower movable plate 5, so that the upper baffle and the lower baffle keep the attached state with the fixed plate 2 and can only move up and down, left and right and can not move back and forth.
A spring 8 is arranged between the fixed plate 2 and the upper movable plate 4 and the lower movable plate 5, when the belt materials pass through the shaped holes in the working process, the belt materials drive the upper movable plate and the lower movable plate to transversely move, and the spring 8 presses the upper movable plate 4 and the lower movable plate 5 to the holes in the middle of the upper movable plate 4 and the lower movable plate 5 and keeps the surrounding state of the belt materials.
In operation, the strip 1 passes through the holes in the movable plate, and the upper movable plate 4 and the lower movable plate 5 are always pressed against the strip 1, which are only movable transversely against the fixed plate and always cover the openings 3 in the fixed plate 2. Under the common blocking action of the fixed plate 2, the upper movable plate 4, the lower movable plate 5 and the strip 1, the gas inside and outside the furnace can only flow out through the split joint between the upper movable plate 4 and the lower movable plate 5 and the anastomotic joint between the upper movable plate 4, the lower movable plate 5 and the strip 1. The gaps are very tiny, so that the diffusion of gas and heat in the furnace to the outside of the furnace is reduced, and a remarkable sealing effect is achieved.
The material used in the device has no special requirement, and the higher the heat resistance of the material is, the better the situation is.
The device comprises a fixed plate, a movable plate, a baffle plate and a spring. The fixing plate is perpendicular to the advancing direction of the strip and is in sealing connection with the furnace body, and is provided with an opening similar to the strip in shape but larger in size; the movable plate and the baffle are arranged on the outer side of the fixed plate. The middle of the movable plate is provided with a hole with the same cross section size as the strip, the outer edge size of the movable plate is larger than the opening size of the fixed plate, and the movable plate can be divided into an upper movable plate and a lower movable plate. When in work, the belt material passes through the holes in the movable plate, and the upper and lower movable plates always enclose the belt material under the action of the springs. The movable plate is arranged between the baffle and the fixed plate, can only transversely move along the fixed plate and always covers the opening on the fixed plate. The fixed plate, the movable plate and the strips penetrating through the movable plate jointly separate the inner space and the outer space of the furnace mouth, prevent and reduce the circulation of gas and heat inside and outside the furnace mouth, and realize the furnace mouth sealing.
The device plays a role in effectively isolating the gas inside and outside the continuous heating furnace at the furnace mouth, and has the advantages of low manufacturing cost, simple structure, safety, reliability and convenient disassembly and assembly.
Claims (9)
1. A furnace mouth sealing device of a continuous heat treatment furnace, which is characterized in that: the device comprises a fixed plate, a movable plate and a baffle plate; the fixing plate is perpendicular to the advancing direction of the strip and is in sealing connection with the furnace body, and is provided with an opening which can pass through the strip, and the opening is similar to the strip in shape but larger in size; the movable plate is arranged on the outer side of the fixed plate, and a hole with the same cross section size as the strip is formed in the middle of the movable plate; the baffle plate is arranged on the outer side of the movable plate, and the baffle plate and the fixed plate enclose the movable plate in the middle so that the movable plate can only transversely move along the fixed plate; when the furnace is in operation, the strip continuously passes through the shaped holes in the movable plate, and the fixed plate, the movable plate and the strip passing through the movable plate jointly separate the inner space from the outer space of the furnace mouth.
2. The furnace mouth sealing device of a continuous heat treatment furnace according to claim 1, wherein: when in operation, the geometric center of the strip material coincides with the geometric center of the movable plate type hole center and the fixed plate opening.
3. The furnace mouth sealing device of a continuous heat treatment furnace according to claim 2, wherein: the size of the opening on the fixing plate is more than 5mm larger than the outer edge size of the cross section of the strip.
4. The furnace mouth sealing device of a continuous heat treatment furnace according to claim 2, wherein: the outer edge size of the movable plate is larger than the size of the opening on the fixed plate.
5. The furnace mouth sealing device of a continuous heat treatment furnace according to claim 4, wherein: the size of the outer edge of the movable plate is more than 10mm larger than the largest size of the opening in the fixed plate.
6. The furnace mouth sealing device of a continuous heat treatment furnace according to claim 1, wherein: the movable plate is divided into an upper movable plate and a lower movable plate, the whole movable plate is split along a horizontal line from the leftmost position of the middle hole to the leftmost position of the movable plate, and the middle hole is split along the horizontal line from the rightmost position to the rightmost position of the movable plate, so that the upper movable plate and the lower movable plate are formed.
7. The furnace mouth sealing device of a continuous heat treatment furnace according to claim 6, wherein: the upper movable plate and the lower movable plate are respectively arranged on the fixed plate through springs, and the surrounding state of the upper movable plate and the lower movable plate is kept.
8. The furnace mouth sealing device of a continuous heat treatment furnace according to claim 7, wherein: the baffle comprises an upper baffle and a lower baffle, the upper baffle and the lower baffle are arranged on the fixed plate, and the upper movable plate and the lower movable plate are respectively enclosed between the upper baffle, the lower baffle and the fixed plate, so that the upper movable plate and the lower movable plate can only transversely move along the fixed plate.
9. The furnace mouth sealing device of a continuous heat treatment furnace according to claim 1, wherein: the continuous heat treatment furnace is a continuous passing strip heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320291084.3U CN219363744U (en) | 2023-02-22 | 2023-02-22 | Furnace mouth sealing device of continuous heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320291084.3U CN219363744U (en) | 2023-02-22 | 2023-02-22 | Furnace mouth sealing device of continuous heat treatment furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219363744U true CN219363744U (en) | 2023-07-18 |
Family
ID=87137351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320291084.3U Active CN219363744U (en) | 2023-02-22 | 2023-02-22 | Furnace mouth sealing device of continuous heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219363744U (en) |
-
2023
- 2023-02-22 CN CN202320291084.3U patent/CN219363744U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107311436A (en) | A kind of closed system of processing for glass bending | |
| CN219363744U (en) | Furnace mouth sealing device of continuous heat treatment furnace | |
| US4491144A (en) | Flexible seals for sliding blade dampers | |
| CN210085520U (en) | Stainless steel strip annealing furnace | |
| CN210980809U (en) | Integral protection shield with furnace door frame sealing function | |
| CN210560540U (en) | Smoke removing device for blast furnace taphole | |
| CN107782143B (en) | Sealing device for bench breast board of sintering machine | |
| CN208204056U (en) | A kind of flue gas cut-off equipment | |
| CN201173215Y (en) | Insert type blower fan bearing cooling apparatus | |
| CN210718680U (en) | Novel submerged arc furnace sliding sealing device | |
| CN211305167U (en) | Metal product welding mechanism | |
| KR100419626B1 (en) | Device for sealing atmosphere gas in twin roll strip casting machine | |
| CN209802106U (en) | Sealing device of circular cooler | |
| CN205843404U (en) | A kind of body of heater hole sealing device | |
| CN210741141U (en) | Dust removal outer cover of alloy liquid smelting furnace | |
| CN204718392U (en) | The rising guard apparatus of a kind of sintering pallet one-level water-stop solar heat protection | |
| US2231716A (en) | Closure for openings in heattreatment furnaces | |
| CN106017119B (en) | Furnace body hole sealing device | |
| CN204718397U (en) | The portable hot gas sintering sealing device of a kind of sintering machine secondary water-stop | |
| CN213298846U (en) | Sealing structure of upper material blocking valve cylinder | |
| CN201662328U (en) | Air-lock seal door device | |
| CN220103741U (en) | Submerged arc furnace cover with cooling structure | |
| CN211084870U (en) | Acid gun sleeve sealing device suitable for roasting furnace | |
| CN211035680U (en) | Novel molten tin bath observation window edge seal | |
| CN211782823U (en) | Dust excluding hood seal structure and steelmaking electric furnace dust collector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |