CN215404416U - Sealing device for axial hot dust gas of gear roller of shaft furnace - Google Patents
Sealing device for axial hot dust gas of gear roller of shaft furnace Download PDFInfo
- Publication number
- CN215404416U CN215404416U CN202121908378.3U CN202121908378U CN215404416U CN 215404416 U CN215404416 U CN 215404416U CN 202121908378 U CN202121908378 U CN 202121908378U CN 215404416 U CN215404416 U CN 215404416U
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- Prior art keywords
- furnace
- gas
- shaft
- sealing
- connecting pipe
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 239000000428 dust Substances 0.000 title claims abstract description 29
- 238000012856 packing Methods 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 16
- 238000007664 blowing Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 239000000945 filler Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The utility model relates to a sealing device for axial hot dust gas of a gear roller of a shaft furnace, in particular to a sealing device for axial hot dust gas of the gear roller of the shaft furnace, which relates to a gas sealing device, effectively prevents the leakage of hot air containing dust in the shaft furnace, protects the working environment and reduces the dry oil sealing consumption, and comprises a flange cover sleeved on the gear roller shaft, wherein one end of a furnace shell flange connecting pipe is fixedly connected with a furnace shell of the shaft furnace in a sealing way, the other end of the furnace shell flange connecting pipe is fixedly connected with the flange cover in a sealing way, and a packing sealing device is arranged between the flange cover and a gear shaft; a gas sealing cavity is defined by the flange cover, the furnace body and the furnace shell flange connecting pipe, and a gas inlet pipeline is connected to the gas sealing cavity; and a valve is arranged on the air inlet pipeline. The utility model has simple structure and convenient installation, and can effectively prevent hot dust gas in the shaft furnace from leaking out by introducing gas into the gas sealing cavity enclosed by the flange cover, the furnace body and the furnace shell flange connecting pipe to form gas sealing.
Description
Technical Field
The utility model relates to a gas sealing device, which effectively prevents dust-containing hot air in a shaft furnace from leaking, protects the working environment and reduces the dry oil sealing consumption, in particular to a sealing device for axial hot dust gas of a gear roller of the shaft furnace.
Background
After the pellet ore is roasted in the shaft furnace, the temperature is high, the dust content is high, a large amount of cooling air (clean air) needs to be blown into the shaft furnace to cool the pellet ore in the descending process in the shaft furnace, the temperature of the pellet ore is reduced to about 500 ℃, the pellet ore enters a discharge pipe through a toothed roll crusher and then is discharged out of the shaft furnace, a large amount of cooling air needs to be blown into a cooling section of the shaft furnace, and part of the cooling air descends along the cooling section of the shaft furnace and becomes hot air containing a large amount of dust; the toothed roller is arranged at a discharge hole at the lower part of the shaft furnace, and a power part and a support bearing for rotating the toothed roller are arranged outside the shaft furnace; the joint part of the tooth roll shaft and the shaft furnace body is sealed to prevent a large amount of dust-containing hot air in the furnace from blowing out to threaten external driving equipment and environment; at present, the mechanical sealing is generally realized by combining the filler and the dry oil, and the defects that a gap is formed between the filler and a shaft, dust-containing hot air can be blown out, the gap between the filler is filled by pressing a large amount of dry oil, the escape of the dust-containing hot air is reduced, hard particles in part of dust can be irradiated to a shaft head to be abraded, the temperature of the hot air is high, the dry oil is liquefied, the viscosity is reduced, the fluidity is good, and the dry oil can be blown out from the gap of the filler, so the consumption of the dry oil is high, and the surrounding environment is deteriorated.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides the sealing device for the axial hot dust gas of the tooth roller of the shaft furnace, which has a simple structure and convenient installation, effectively prevents the hot dust gas from leaking, does not influence the external environment of the environment, and ensures the sealing effect.
The utility model relates to a sealing device for axial hot dust and gas of a gear roller of a shaft furnace, which comprises a flange cover sleeved on the gear roller shaft, wherein the flange cover is connected with the shaft furnace through an annular furnace shell flange connecting pipe; a gas sealing cavity is defined by the flange cover, the furnace body and the furnace shell flange connecting pipe, and a gas inlet pipeline is connected to the gas sealing cavity; and a valve is arranged on the air inlet pipeline.
Preferably, an annular baffle and an annular base plate are sleeved on one end, connected with the gear roller, of the gear roller shaft, the baffle and one end, facing the shaft furnace, of the flange cover are fixedly and hermetically connected, the base plate is fixedly connected with the gear roller through a plurality of fixed connection devices uniformly distributed along the circumferential direction of the base plate, an annular area defined by the baffle, the furnace shell flange connecting pipe and the base plate is a gas sealing cavity, one end, connected with the gas sealing cavity, of the gas inlet pipe penetrates through the furnace shell flange connecting pipe to be communicated with the gas sealing cavity, and the gas inlet pipe is fixedly and hermetically connected with the furnace shell flange connecting pipe;
a gap for the sealing cavity to enter the furnace body is formed between the base plate and the furnace shell flange connecting pipe; the air pressure in the air sealing cavity is larger than the air pressure in the shaft furnace and is larger than the atmospheric pressure.
Preferably, the clearance between the backing plate and the furnace shell flange joint is not more than 1 mm.
Preferably, the shaft furnace is connected with a main pipe for blowing cooling air into the shaft furnace through a branch pipe, and one end of the air inlet pipeline, which is far away from the gas sealing chamber, is communicated with the branch pipe.
Preferably, the fixed connecting device comprises a connecting bolt which penetrates through the backing plate and then is in threaded connection with a threaded hole formed in the gear roller.
Preferably, the baffle is hermetically welded to the flange cover plate.
Preferably, the furnace shell flange connecting pipe is connected with the furnace shell of the shaft furnace through welding, the other end of the furnace shell flange connecting pipe is connected with the flange cover through a bolt, and a sealing gasket is arranged between the furnace shell flange connecting pipe and the flange cover.
The utility model has simple structure and convenient installation, and can effectively prevent hot dust gas in the shaft furnace from leaking out by introducing gas into the gas sealing cavity enclosed by the flange cover, the furnace body and the furnace shell flange connecting pipe to form gas sealing.
The utility model introduces cooling air through the air inlet pipeline, so that the cooling air forms a sealing barrier in the air sealing cavity, prevents dust hot air from leaking outwards along the axial direction of the toothed roller, and plays a certain role in cooling the toothed roller shaft due to the low temperature of the cooling air.
Drawings
FIG. 1 is a schematic view of the present invention in connection with a manifold.
FIG. 2 is a schematic view of the structure of the present invention.
Reference numerals: 1-gear roll shaft, 2-gear roll, 3-flange cover, 4-furnace shell flange connecting pipe, 5-air inlet pipeline, 6-valve, 7-gas sealing chamber, 8-baffle, 9-backing plate, 10-branch pipe, 11-shaft furnace shell and 12-main pipe.
Detailed Description
The utility model relates to a sealing device for a gear roller shaft 1 of a shaft furnace to hot dust gas, which comprises a flange cover 3 sleeved on the gear roller shaft 1, wherein the flange cover 3 is connected with the shaft furnace through an annular furnace shell flange connecting pipe 4, one end of the furnace shell flange connecting pipe 4 is fixedly connected with a furnace shell 11 of the shaft furnace in a sealing way, the other end of the furnace shell flange connecting pipe is fixedly connected with the flange cover 3 in a sealing way, and a packing sealing device is arranged between the flange cover 3 and a gear shaft; a gas sealing chamber 7 is defined by the flange cover 3 and the furnace body and furnace shell flange connecting pipe 4, and a gas inlet pipeline 5 is connected to the gas sealing chamber 7; and a valve 6 is arranged on the air inlet pipeline 5.
An annular baffle 8 and an annular backing plate 9 are sleeved on one end, connected with the gear roller 2, of the gear roller shaft 1, the baffle 8 and one end, facing the shaft furnace, of the flange cover 3 are fixedly and hermetically connected, the backing plate 9 is fixedly connected with the gear roller 2 through a plurality of fixed connection devices uniformly distributed along the circumferential direction of the backing plate 9, an annular area defined by the baffle 8, the furnace shell flange connecting pipe 4 and the backing plate 9 is a gas sealing cavity 7, one end, connected with the gas sealing cavity 7, of the gas inlet pipe penetrates through the furnace shell flange connecting pipe 4 to be communicated with the gas sealing cavity 7, and the gas inlet pipe is hermetically and fixedly connected with the furnace shell flange connecting pipe 4;
a gap for the sealing cavity to enter the furnace body is arranged between the backing plate 9 and the furnace shell flange connecting pipe 4; the air pressure in the air sealing chamber 7 is greater than the air pressure in the shaft furnace and greater than the atmospheric pressure.
The clearance between the backing plate 9 and the furnace shell flange joint pipe 4 is not more than 1 mm.
The shaft furnace is connected with a main pipe 12 for blowing cooling air into the shaft furnace through a branch pipe 10, and one end of the air inlet pipeline 5 far away from the gas sealing chamber 7 is communicated with the branch pipe 10.
The fixed connecting device comprises a connecting bolt which penetrates through the backing plate 9 and then is in threaded connection with a threaded hole formed in the gear roller 2.
The baffle plate 8 is welded with the flange cover 3 plate in a sealing way.
The furnace shell flange connecting pipe 4 is connected with a furnace shell 11 of the shaft furnace through welding, the other end of the furnace shell flange connecting pipe 4 is connected with the flange cover 3 through a bolt, and a sealing gasket is arranged between the furnace shell flange connecting pipe 4 and the flange cover 3.
The utility model has simple structure and convenient installation, and gas is introduced into the gas sealing chamber 7 enclosed between the flange cover 3 and the furnace body and the furnace shell flange connecting pipe 4 to form gas sealing, thereby effectively preventing hot dust gas in the shaft furnace from leaking.
According to the utility model, cooling air is introduced through the air inlet pipeline 5, so that the cooling air forms a sealing barrier in the air sealing chamber 7, dust hot air is prevented from leaking outwards along the tooth roller shaft 1, and meanwhile, a certain cooling effect is achieved on the tooth roller shaft 1 due to the low temperature of the cooling air.
Claims (7)
1. A sealing device for axial hot dust and gas of a gear roller of a shaft furnace comprises a flange cover (3) sleeved on the gear roller shaft (1), wherein the flange cover (3) is connected with the shaft furnace through an annular furnace shell flange connecting pipe (4), one end of the furnace shell flange connecting pipe (4) is fixedly connected with a furnace shell (11) of the shaft furnace in a sealing way, the other end of the furnace shell flange connecting pipe is fixedly connected with the flange cover (3) in a sealing way, and a packing sealing device is arranged between the flange cover (3) and a gear shaft; the furnace is characterized in that a gas sealing chamber (7) is enclosed among the flange cover (3), the furnace body and the furnace shell flange connecting pipe (4), and the gas sealing chamber (7) is connected with a gas inlet pipeline (5); and a valve (6) is arranged on the air inlet pipeline (5).
2. The sealing device for the axial hot dust and gas of the gear roller of the shaft furnace is characterized in that one end, connected with the gear roller (2), of the gear roller shaft (1) is sleeved with an annular baffle (8) and an annular backing plate (9), the baffle (8) and one end, facing the shaft furnace, of a flange cover (3) are fixedly and hermetically connected, the backing plate (9) is fixedly connected with the gear roller (2) through a plurality of fixed connecting devices uniformly distributed along the circumferential direction of the backing plate (9), an annular area defined by the baffle (8), a furnace shell flange connecting pipe (4) and the backing plate (9) is a gas sealing chamber (7), one end, connected with the gas sealing chamber (7), of the gas inlet pipe penetrates through the furnace shell flange connecting pipe (4) to be communicated with the gas sealing chamber (7), and the gas inlet pipe is hermetically and fixedly connected with the furnace shell flange connecting pipe (4);
a gap for the sealed cavity to enter the furnace body is arranged between the backing plate (9) and the furnace shell flange connecting pipe (4); the air pressure in the air sealing chamber (7) is greater than the air pressure in the shaft furnace and greater than the atmospheric pressure.
3. The device for sealing the axial direction of hot dust and air of a toothed roller of a shaft furnace according to claim 2, characterized in that the gap between the shim plate (9) and the flange connection (4) of the furnace shell is not more than 1 mm.
4. A sealing device for the axial direction of hot dust and gas of a tooth roller of a shaft furnace according to claim 3, characterized in that the shaft furnace is connected with a main pipe (12) for blowing cooling air into the shaft furnace through a branch pipe (10), and the end of the air inlet pipe (5) far away from the gas sealing chamber (7) is communicated with the branch pipe (10).
5. A sealing device for the axial direction of hot dust and air in a tooth roller of a shaft furnace according to claim 4, characterized in that said fixed connection means comprise a connecting bolt, said connecting bolt passing through the shim plate (9) and being in threaded connection with a threaded hole provided in the tooth roller (2).
6. A sealing device for the axial hot dust and air of a tooth roller of a shaft furnace according to claim 5, characterized in that the baffle (8) is welded to the flange cover (3) plate in a sealing manner.
7. The sealing device for the axial direction hot dust and gas of the gear roller of the shaft furnace is characterized in that the furnace shell flange connecting pipe (4) is connected with the furnace shell (11) of the shaft furnace through welding, the other end of the furnace shell flange connecting pipe (4) is connected with the flange cover (3) through bolts, and a sealing gasket is arranged between the furnace shell flange connecting pipe (4) and the flange cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121908378.3U CN215404416U (en) | 2021-08-16 | 2021-08-16 | Sealing device for axial hot dust gas of gear roller of shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121908378.3U CN215404416U (en) | 2021-08-16 | 2021-08-16 | Sealing device for axial hot dust gas of gear roller of shaft furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215404416U true CN215404416U (en) | 2022-01-04 |
Family
ID=79663057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121908378.3U Expired - Fee Related CN215404416U (en) | 2021-08-16 | 2021-08-16 | Sealing device for axial hot dust gas of gear roller of shaft furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215404416U (en) |
-
2021
- 2021-08-16 CN CN202121908378.3U patent/CN215404416U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |