CN221005930U - Silicon carbide negative pressure smelting furnace - Google Patents
Silicon carbide negative pressure smelting furnace Download PDFInfo
- Publication number
- CN221005930U CN221005930U CN202322554084.0U CN202322554084U CN221005930U CN 221005930 U CN221005930 U CN 221005930U CN 202322554084 U CN202322554084 U CN 202322554084U CN 221005930 U CN221005930 U CN 221005930U
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- furnace
- negative pressure
- silicon carbide
- furnace gas
- steel frame
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- 238000003723 Smelting Methods 0.000 title claims abstract description 23
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 23
- 238000009423 ventilation Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002360 explosive Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model relates to the technical field of smelting furnaces, in particular to a silicon carbide negative pressure smelting furnace, which comprises a furnace body, wherein a ventilation mechanism is arranged on the outer side of the furnace body and comprises a channel steel frame, the channel steel frame is fixedly arranged on the outer side of the furnace body, a plurality of ventilation holes are formed in the channel steel frame and are communicated with the inner part of the furnace body, a ventilation cavity is formed in the inner side of the channel steel frame, a flexible sealing cover is fixedly arranged at the outlet end of the ventilation cavity, and a plurality of furnace gas guide pipes are fixedly arranged on the flexible sealing cover. The flexible sealing cover can slow down the action of air pressure through the expansion of the flexible sealing cover, so that the problem of burning through a material surface caused by overlarge negative pressure can be avoided.
Description
Technical Field
The utility model relates to the technical field of silicon carbide negative pressure smelting furnaces, in particular to a silicon carbide negative pressure smelting furnace.
Background
In the use process of the silicon carbide smelting furnace, as the reduction reaction of the silicon carbide is a pressurizing reaction, namely, a large amount of furnace gas is generated in the silicon carbide smelting furnace, when the furnace gas can not be discharged in time, the pressure in the silicon carbide smelting furnace is increased, and the furnace spraying phenomenon is caused;
In view of this, chinese patent application No. CN201010510418.9 discloses a silicon carbide negative pressure smelting furnace, which comprises a furnace body, a furnace head and a negative pressure generating device. The furnace body comprises a side wall and a furnace core, and the area surrounded by the side wall and the furnace end is used for accommodating the furnace core and raw materials. The side wall comprises a channel steel frame, an air permeable wall embedded in the channel steel frame and a metal sealing cover welded with one side surface of the channel steel frame, wherein a gap is reserved between the metal sealing cover and the air permeable wall, so that a furnace gas exchange chamber is formed;
The patent forms a furnace gas exchange chamber between the metal sealing cover and the ventilation wall by welding the metal sealing cover on the side surface of the channel steel frame; however, because the metal sealing cover is of a hard structure, under the condition of negative pressure, the internal pressure cannot be released, so that the material surface is burnt out due to overlarge negative pressure in the production process, air cannot be prevented from entering, explosive gas is generated after air and gas are mixed, and dangerous factors are caused.
Disclosure of utility model
The utility model aims to solve the defect that the negative pressure is easy to cause excessive burning through of a material surface in the production process in the prior art, and provides a silicon carbide negative pressure smelting furnace.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The utility model provides a silicon carbide negative pressure smelting furnace, includes the furnace body, ventilation mechanism is installed in the outside of furnace body, ventilation mechanism includes the channel-section steel frame, channel-section steel frame fixed mounting is in the furnace body outside, a plurality of ventilation holes have been seted up on the channel-section steel frame, a plurality of the ventilation holes all communicate with each other with the furnace body is inside, the ventilation chamber has been seted up to the inboard of channel-section steel frame, the exit end fixed mounting of ventilation chamber has flexible sealed cowling, fixed mounting has a plurality of stove gas pipes on the flexible sealed cowling.
Preferably, the outlet ends of the furnace gas guide pipes are fixedly provided with the same furnace gas collecting pipe, and the outlet ends of the furnace gas collecting pipes are fixedly provided with a furnace gas recovery chamber.
Preferably, a negative pressure device is fixedly arranged at the inlet end of the furnace gas recovery chamber, and the outlet end of the furnace gas collecting pipe is communicated with the interior of the negative pressure device.
Preferably, a plurality of furnace gas pipes are provided with filtering pieces, and each filtering piece comprises a mounting box and a filter screen; the installation box is fixedly arranged on the furnace gas guide pipe and communicated with the interior of the furnace gas guide pipe, and the filter screen is fixedly arranged on the inner side of the installation box.
Preferably, the bottom fixed mounting of installation incasement side has the water conservancy diversion frame, the water conservancy diversion frame is located the below of filter screen, the inboard fixed mounting of water conservancy diversion frame has a plurality of guide plates, and a plurality of the guide plates are along the length direction equidistance distribution of water conservancy diversion frame.
Preferably, the plurality of guide plates are all of an inclined structure.
The negative pressure smelting furnace for silicon carbide has the beneficial effects that: under the negative pressure state, the furnace gas needs to be discharged from the furnace body, so that the flexible sealing cover is subjected to air pressure acting force, and the flexible sealing cover can slow down the air pressure action through the expansion and contraction of the flexible sealing cover due to certain flexibility, so that the problem of burning through a material surface caused by overlarge negative pressure can be avoided; meanwhile, the flexible sealing cover can be closely attached to the channel steel frame, so that air can be prevented from entering, and the problem that explosive gas is generated after air and gas are mixed can be avoided.
Drawings
FIG. 1 is a schematic structural view of a negative pressure smelting furnace for silicon carbide according to the present utility model;
FIG. 2 is a schematic structural diagram of a negative pressure smelting furnace for silicon carbide according to the present utility model;
Fig. 3 is a schematic structural diagram of a negative pressure smelting furnace for silicon carbide according to the present utility model.
In the figure: furnace body 1, ventilation mechanism 2, channel steel frame 21, ventilation hole 22, ventilation cavity 23, flexible sealed cowling 24, furnace gas conduit 3, furnace gas collecting pipe 4, furnace gas recovery chamber 5, negative pressure device 6, filter 7, mounting box 71, filter screen 72, flow guiding frame 73, and flow guiding plate 74.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Example 1:
Referring to fig. 1-2, a silicon carbide negative pressure smelting furnace comprises a furnace body 1, wherein a ventilation mechanism 2 is arranged on the outer side of the furnace body 1, the ventilation mechanism 2 comprises a channel steel frame 21, the channel steel frame 21 is fixedly arranged on the outer side of the furnace body 1, a plurality of ventilation holes 22 are formed in the channel steel frame 21, the ventilation holes 22 are communicated with the inner side of the furnace body 1, a ventilation cavity 23 is formed in the inner side of the channel steel frame 21, a flexible sealing cover 24 is fixedly arranged at the outlet end of the ventilation cavity 23, and a plurality of furnace gas guide pipes 3 are fixedly arranged on the flexible sealing cover 24; the flexible sealing cover 24 is made of PE material; in the negative pressure state, the furnace gas needs to be discharged from the inside of the furnace body 1, so that the flexible sealing cover 24 is subjected to air pressure acting force, and the flexible sealing cover 24 can slow down the air pressure action through the expansion and contraction of the flexible sealing cover 24 due to certain flexibility, so that the problem of burning through a material surface caused by overlarge negative pressure can be avoided; meanwhile, the flexible sealing cover 24 can be closely attached to the channel steel frame 21, so that air can be prevented from entering, and the problem that explosive gas is generated after air and gas are mixed can be avoided.
The outlet ends of the furnace gas guide pipes 3 are fixedly provided with the same furnace gas collecting pipe 4, and the outlet ends of the furnace gas collecting pipes 4 are fixedly provided with a furnace gas recovery chamber 5; the inlet end of the furnace gas recovery chamber 5 is fixedly provided with a negative pressure device 6, and the outlet end of the furnace gas collecting pipe 4 is communicated with the interior of the negative pressure device 6; through the action of the negative pressure device 6, the furnace gas guide pipe 3 can guide out high-pressure furnace gas in the furnace body 1, and then the high-pressure furnace gas is guided into the furnace gas recovery chamber 5 through the furnace gas collecting pipe 4, so that the pressure in the furnace body 1 can be reduced, and the problem of furnace spraying is avoided.
Example 2:
Referring to fig. 1 to 3, as another preferred embodiment of the present invention, there is a difference from embodiment 1 in that a plurality of furnace gas ducts 3 are mounted with a filter member 7, the filter member 7 including a mounting case 71 and a filter screen 72; the installation box 71 is fixedly installed on the furnace gas conduit 3 and communicated with the interior of the furnace gas conduit 3, and the filter screen 72 is fixedly installed on the inner side of the installation box 71; the bottom end of the inner side of the installation box 71 is fixedly provided with a flow guiding frame 73, the flow guiding frame 73 is positioned below the filter screen 72, the inner side of the flow guiding frame 73 is fixedly provided with a plurality of flow guiding plates 74, and the flow guiding plates 74 are equidistantly distributed along the length direction of the flow guiding frame 73; the guide plates 74 are all of an inclined structure;
When the furnace gas guide pipe 3 guides out the furnace gas, the filter screen 72 can filter out the particle impurities in the furnace gas, so that the problem of blockage in the furnace gas collecting pipe 4 caused by the particle impurities can be avoided; the deflector 74 can guide the furnace gas and increase the flow rate of the furnace gas, so that the surface of the filter screen 72 can be impacted, and impurities blocked in the filter holes of the filter screen 72 can be flushed out, so that the problem that the filter screen 72 is blocked is avoided.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The utility model provides a silicon carbide negative pressure smelting furnace, includes furnace body (1), its characterized in that, ventilation mechanism (2) are installed in the outside of furnace body (1), ventilation mechanism (2) are including channel-section steel frame (21), channel-section steel frame (21) fixed mounting is in the furnace body (1) outside, a plurality of ventilation holes (22) have been seted up on channel-section steel frame (21), a plurality of ventilation holes (22) all communicate with each other with furnace body (1) inside, ventilation chamber (23) have been seted up to the inboard of channel-section steel frame (21), the exit end fixed mounting of ventilation chamber (23) has flexible sealed cowling (24), a plurality of stove gas pipes (3) of fixed mounting on flexible sealed cowling (24).
2. The silicon carbide negative pressure smelting furnace according to claim 1, wherein the outlet ends of the furnace gas guide pipes (3) are fixedly provided with the same furnace gas collecting pipe (4), and the outlet ends of the furnace gas collecting pipes (4) are fixedly provided with a furnace gas recovery chamber (5).
3. The silicon carbide negative pressure smelting furnace according to claim 2, wherein the inlet end of the furnace gas recovery chamber (5) is fixedly provided with a negative pressure device (6), and the outlet end of the furnace gas collecting pipe (4) is communicated with the inside of the negative pressure device (6).
4. A negative pressure smelting furnace for silicon carbide according to claim 3, characterized in that a number of furnace gas ducts (3) are provided with filter elements (7), said filter elements (7) comprising a mounting box (71) and a filter screen (72); the installation box (71) is fixedly arranged on the furnace gas guide pipe (3) and is communicated with the interior of the furnace gas guide pipe (3), and the filter screen (72) is fixedly arranged on the inner side of the installation box (71).
5. The silicon carbide negative pressure smelting furnace according to claim 4, wherein a flow guiding frame (73) is fixedly installed at the bottom end of the inner side of the installation box (71), the flow guiding frame (73) is located below the filter screen (72), a plurality of flow guiding plates (74) are fixedly installed at the inner side of the flow guiding frame (73), and the flow guiding plates (74) are equidistantly distributed along the length direction of the flow guiding frame (73).
6. The negative pressure silicon carbide smelting furnace according to claim 5, wherein the plurality of guide plates (74) are each of an inclined structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322554084.0U CN221005930U (en) | 2023-09-20 | 2023-09-20 | Silicon carbide negative pressure smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322554084.0U CN221005930U (en) | 2023-09-20 | 2023-09-20 | Silicon carbide negative pressure smelting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221005930U true CN221005930U (en) | 2024-05-24 |
Family
ID=91115809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322554084.0U Active CN221005930U (en) | 2023-09-20 | 2023-09-20 | Silicon carbide negative pressure smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221005930U (en) |
-
2023
- 2023-09-20 CN CN202322554084.0U patent/CN221005930U/en active Active
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