CN219869168U - Combined dust hood of intermediate frequency furnace - Google Patents
Combined dust hood of intermediate frequency furnace Download PDFInfo
- Publication number
- CN219869168U CN219869168U CN202320873971.1U CN202320873971U CN219869168U CN 219869168 U CN219869168 U CN 219869168U CN 202320873971 U CN202320873971 U CN 202320873971U CN 219869168 U CN219869168 U CN 219869168U
- Authority
- CN
- China
- Prior art keywords
- pipe
- intermediate frequency
- tee joint
- frequency furnace
- furnace
- 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
- 239000000428 dust Substances 0.000 title claims abstract description 66
- 229910000831 Steel Inorganic materials 0.000 claims description 39
- 239000010959 steel Substances 0.000 claims description 39
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 229910001208 Crucible steel Inorganic materials 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a combined dust hood of an intermediate frequency furnace. The dust hood comprises a stand column pipe, a tee joint, an elbow pipe and a hood body. The upright post pipe is fixed on the furnace platform, the upper end of the upright post pipe is communicated with the dust removing main pipe, the upper part of the upright post pipe is provided with a dust removing inlet, and the upper part of the upright post pipe is rotationally connected with the tee joint at the position of the dust removing inlet. The transverse pipe of the tee joint is detachably connected with the bent pipe, and the bent pipe is fixedly connected with the cover body above the furnace mouth. The upper end and the lower end of the vertical pipe of the tee joint are welded with a rotary table, the rotary table is rotationally connected with a fixed table fixed on the upright pipe through a small ball, and matched U-shaped openings are processed on the fixed table and the rotary table. Bolts are inserted into the U-shaped openings to fix the tee. The fixed disk and the rotary disk are provided with matched grooves, and the small balls roll in the grooves and are limited. The utility model uses rolling friction to facilitate the rotation of the cover body, can detachably enlarge the space of the furnace platform, has simple structure, low manufacturing cost, no maintenance and long service life.
Description
Technical Field
The utility model is applied to cast steel intermediate frequency furnace melting, in particular to a combined dust hood arranged above the intermediate frequency furnace.
Background
The intermediate frequency furnace is common cast steel melting equipment, and with the standard promotion of environmental protection and occupational health, the intermediate frequency furnace is gradually installed with dust collector. The utility model discloses a telescopic intermediate frequency furnace dust hood with a bulletin number of CN212512446U, which is designed for the purposes that a gear and a rack are gradually oxidized, the matching deviation is gradually increased, and the moving failure rate is increased along with the time.
The publication No. CN203454744U discloses a dust removal exhaust hood of an intermediate frequency furnace, wherein the exhaust hood covers the furnace mouth of the intermediate frequency furnace, the top of the exhaust hood is connected with a main pipeline through bolts, the dust removal exhaust hood is almost in a sealed state, and although the dust removal effect is good, troubles are brought to the operation and observation of the intermediate frequency furnace, such as operations of feeding, sampling, temperature measurement, alloying, deoxidization and the like, particularly the monitoring of the temperature of molten steel is not visual, the furnace lining is easily heated to high temperature, and the service life of the furnace lining is seriously influenced. The publication No. CN207922889U provides a novel dust hood of the intermediate frequency furnace, and two dust-removing half hoods are covered at the furnace mouth in a split mode. The structure has two defects, namely, the molten steel is baked at high temperature, and the cover is easy to deform; and secondly, when tapping, two half covers need to be opened, and at the moment, the two half covers collide with a steel ladle for receiving steel, so that molten steel in the intermediate frequency furnace cannot be discharged completely.
When molten steel is melted, frequent operations such as charging, temperature measurement, sampling, alloying, covering slag scattering, deoxidizing, slag skimming and the like are needed, especially, the temperature of the molten steel needs to be closely monitored, and the operation is properly matched with the temperature so as to achieve the purposes of prolonging the service life of a furnace lining and improving the melting efficiency, and more importantly, the furnace penetrating accident is prevented. The smoke dust of the intermediate frequency furnace floats to the top of the workshop along with high-temperature airflow from the furnace mouth of the intermediate frequency furnace, the dust removal effect of the dust removal hood is optimal when designed right above the furnace mouth of the intermediate frequency furnace, and an operation space is reserved below the dust removal hood. However, considering that the redundant molten steel in the ladle needs to be returned to the furnace after the molten steel is poured, the dust hood above the furnace mouth prevents the molten steel from being returned to the furnace, and the dust hood above the furnace mouth is necessarily designed to be movable, and the thought is also the design thought of a telescopic intermediate frequency furnace dust hood with the bulletin number of CN 212512446U.
Disclosure of Invention
The utility model solves the technical problems that: the combined dust hood for the intermediate frequency furnace is simple in structure, convenient to operate, low in failure rate and long in service life, and can meet the requirements of molten steel melting operation.
The technical scheme adopted by the utility model is as follows: the intermediate frequency furnace combined dust hood comprises an upright post pipe, a tee joint, an elbow pipe and a hood body. The stand pipe is fixed on the stove table, the upper end of the stand pipe is communicated with the dust removing main pipe, the upper part of the stand pipe is provided with a dust removing inlet, and the position of the dust removing inlet is rotationally connected with the tee joint. The tee joint comprises a tee joint vertical pipe and a tee joint horizontal pipe which are communicated integrally, wherein the tee joint horizontal pipe is connected with a bent pipe flange plate fastener, and the bent pipe is fixedly connected with the cover body. The upper end and the lower end of the tee joint vertical pipe are fixedly connected with a rotary table, the rotary table is rotationally connected with a fixed table fixed on the upright pipe through a small ball, and matched U-shaped openings are formed in the fixed table and the rotary table. The U-shaped opening is inserted with a bolt, so that the tee joint can be fixed and not rotated. And matched grooves are formed in the fixed disc and the rotary disc, and the small balls roll in the grooves and are limited.
Furthermore, in order to facilitate the assembly and disassembly of the bent pipe and the cover body, the bent pipe and the three-way transverse pipe can be connected by adopting a hook to replace a fastener for connection. The hooks are welded and fixed on the bent pipe flange, two steel plates are welded on the three-way transverse pipe flange, and the hooks are inserted between the two steel plates to limit the hooks.
Further, the cover body is conical, and the height of the lower edge from the plane of the furnace table is 1.5-1.6 meters, so that a space is reserved for the operation of the intermediate frequency furnace.
Further, the cover body is a dome, and the height of the lower edge from the plane of the hearth is 1.8-1.9 meters, which is higher than the average height. The lower part welding steel pipe of the cover body, insert the steel bar in the steel pipe, the fixed welding of steel bar is on the fly leaf, and the fly leaf realizes rotating with the cover body and is connected. The height of the lower edge of the movable plate from the plane of the furnace table is 1.5-1.6 meters.
Further, the outer surface of the three-way transverse pipe is welded with an outer rib plate, or a vertical inner rib plate is welded inside; and a bent pipe rib plate is welded on the bent pipe.
Further, in order to conveniently clean deposited dust in the upright post pipe, a dust removing opening is arranged at the lower part of the upright post pipe.
The beneficial effects of the utility model are as follows: the utility model uses rolling friction to facilitate the rotation of the cover body, can detachably enlarge the space of the furnace platform, has simple structure, low manufacturing cost, no maintenance and long service life.
Drawings
Fig. 1 is a schematic diagram of the front view structure of embodiment 1;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic view of the hook fitting structure of embodiment 2;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a schematic view of the structure of the cover of embodiment 3;
FIG. 7 is a right side view of FIG. 6;
reference numerals: the dust removing device comprises a 1-dust removing main pipe, a 2-fixed disc, a 3-three-way vertical pipe, a 4-ball, a 5-upright pipe, a 6-dust removing port, a 7-dust removing inlet, an 8-outer rib plate, a 9-rotary disc, a 10-three-way transverse pipe, an 11-flange plate, a 12-bent pipe rib plate, a 13-bent pipe, a 14-cover body, a 15-U-shaped port, a 16-hook, a 17-steel plate, an 18-inner rib plate, a 19-movable plate, a 20-steel rod and a 21-steel pipe.
Detailed Description
Example 1
The utility model relates to an improvement of a telescopic intermediate frequency furnace dust hood of CN212512446U, wherein in CN212512446U, a supporting plate is fixed on a wall body of an intermediate frequency furnace operation chamber, and the wall body is detached and then is installed.
The combined dust hood of the embodiment is shown in fig. 1, 2 and 3, and comprises a stand column pipe 5, a tee joint, an elbow pipe 13 and a hood body 14. The lower end of the upright post pipe 5 is fixed on a furnace platform, the upper end of the upright post pipe is communicated with the main dust removing pipe 1, a dust removing inlet 7 is formed in the upper portion of the main dust removing pipe, and a tee joint is rotatably connected at the position of the dust removing inlet 7 in a specific connection mode shown in figure 2. The tee joint comprises a tee joint vertical pipe 3 and a tee joint horizontal pipe 10 which are communicated integrally, wherein the upper end and the lower end of the tee joint vertical pipe 3 are fixedly connected with a rotary table 9, the rotary table 9 is rotationally connected with a fixed disc 2 fixed on a stand pipe 5 through a small ball 4, matched grooves are formed in the rotary table 9 and the fixed disc 2 in a processing mode, a plurality of small balls 4 roll in the grooves and are limited, and therefore the tee joint is fixed on the stand pipe 5 through the grooves and the small balls and can only rotate. The rotary disk 9 and the fixed disk 2 are provided with matched U-shaped openings 15, as shown in figure 3, after the tee joint rotates to a preset position, bolts can be placed in the U-shaped openings 15 to lock the position of the tee joint, so that the tee joint is relatively fixed and does not rotate.
The end part of the three-way transverse pipe 10 is fixedly welded with a flange plate 11 which is connected with a flange plate of the bent pipe 13, and an outer rib plate 8 and a bent pipe rib plate 12 are welded on the three-way transverse pipe 10 and the bent pipe 13 in order to increase the bending strength of the three-way transverse pipe 10 and the bent pipe 13. The cover 14 is welded and fixed at the lower end of the bent pipe 13, and the cover 14 is conical in the embodiment. The lower edge of the cover body 14 is about 1.5-1.6 m away from the hearth plane, and the height is lower than the height of a human body, so that the operation of smelting cast steel by an intermediate frequency furnace of an operator is convenient, the phenomenon of head collision is avoided, and the temperature of the molten steel is monitored intuitively. The lower edge of the cover body 14 is 1-1.2 meters in caliber and completely covers the intermediate frequency furnace, and high-temperature smoke dust of the intermediate frequency furnace enters the upright post pipe 5 through the dust removal inlet 7, then enters the dust removal main pipe 1 and enters the dust removal system through the cover body 14, the bent pipe 13 and the three-way transverse pipe 10.
When tapping or molten steel backwater operation is carried out, the bolts in the U-shaped opening 15 are taken down, the cover body 14 is pushed, the tee joint rotates around the upright post pipe 5, and the cover body 14 leaves the upper part of the intermediate frequency furnace. After the operation is completed, the cover 14 is again rotated.
When the intermediate frequency furnace is disassembled and beaten, if the cover body 14 occupies a larger space above the furnace table, the disassembly and beaten furnace operation or passage is influenced, the bent pipe 13 and the cover body 14 can be disassembled from the flange plate 11 connected with the tee joint, and the furnace table space is enlarged. The height of the three-way transverse pipe 10 is more than 2 meters away from the furnace platform, so that the furnace disassembly and assembly operation and the passing are not affected. When the furnace is baked, the bent pipe 13 is connected with the cover body by a fastening piece flange plate. Typically, the flange connection requires only one or two fasteners.
In the lower part of the pillar tube 5, a dust removal opening 6 is designed, normally sealed. Large particle dust entering the upright tube 5 and entering the main dust removal tube 1 can fall into the bottom of the upright tube 5 due to steering, and can be cleaned regularly through the dust removal port 6.
According to the utility model, the ball 4 rolls in the groove to realize three-way rotation, so that the cover body 14 is driven to rotate away from the upper part of the intermediate frequency furnace, and tapping and backwater of the intermediate frequency furnace are facilitated. The rolling friction force is small, and the cover body is convenient to rotate. And bolts are placed in the U-shaped openings 15, so that the three-way fixing is realized, and the operation is simple. The utility model has the advantages that only the grooves need to be processed, the rest are welded or connected structures, the manufacturing and maintenance workload is small, and the service life is long.
Typically, more than one intermediate frequency furnace is arranged on the hearth, one for each column tube 5. The combined dust hood of the intermediate frequency furnace for smelting molten steel is in a use state shown in the attached drawings 1 and 3, and is communicated with the dust removal main pipe 1 and the hood body 14 through the dust removal inlet 7. The tee joint of the combined dust hood of the other intermediate frequency furnaces rotates by more than 90 degrees, and the tee joint is used for blocking the dust removal inlet 7, so that a valve is not specially arranged on a pipeline, and the special dust removal of the smelting intermediate frequency furnace can be realized.
Example 2
This embodiment is an improvement or replacement to the flange connection of embodiment 1, as shown in fig. 4-5. The bent pipe 13 is connected with a flange welding hook 16, the three-way transverse pipe 10 is welded with steel plates 17, and the installation position of the hook 16 is arranged between the two steel plates 17. The steel plate 17 prevents the hook 16 from rotating or moving, and plays a role in fixing the hook 16. When the cover body 14 and the bent pipe 13 are lifted off, the cover body is directly lifted off upwards. When in installation, the hook 16 is inserted between the two steel plates 17, so that the installation is simple and convenient.
In the embodiment, the inner rib plates 18 are welded in the three-way transverse pipe 10, the inner rib plates 18 are vertical, and compared with the outer rib plates 8, the bending resistance of the three-way transverse pipe can be obviously increased, and the ventilation sectional area of the pipeline is only slightly sacrificed.
Example 3
The cover 14 of example 1 is modified or replaced in this example. The lower edge of the hood 14 in example 1 is about 1.5 to 1.6 m from the hearth plane, and for standing operation, the height is lower than the head height, so that collision can be avoided, but for sampling and the like requiring bending operation, the head collision phenomenon is occasionally generated when the body is erected.
Fig. 6 and 7 are schematic diagrams of the cover structure of the present embodiment, the cover 14 is a dome, a steel pipe 21 is welded at the lower part of the cover 14, and a movable plate 19 is fixedly welded with a steel rod 20 and is rotatably connected with the steel pipe 21 through the steel rod 20. The height of the lower edge of the cover body 14 is about 1.8-1.9 m from the plane of the furnace table, which is slightly higher than the average height, four movable plates 19 are used for inserting steel bars 20 into the steel pipes 21, the movable plates 19 are connected with the cover body 14, the width of the movable plates is about 300-400mm, and the height of the lower edge of the movable plates is about 1.5-1.6 m from the plane of the furnace table. For operators with higher stature, the movable plate 19 on one side can be turned upwards, so that the operation space is increased, as shown in fig. 6 and 7. The lap joint gaps of the four corners can not cause great influence on the dust removal of the intermediate frequency furnace.
When the intermediate frequency furnace is not smelted, the movable plate can be detached, the height of the cover body 14 is higher than the height of a human body, and the passing is not affected. Therefore, the cover body can be not lifted off, only the movable plate 19 is detached, and the crown block is not used, so that the automatic solution of operators is facilitated.
The utility model adopts the rotation connection mode of the small ball and the groove, and can also adopt other rotation connection modes, and only meets the rolling friction, and is convenient for three-way rotation.
When the utility model is applied, three intermediate frequency furnaces are arranged on the intermediate frequency furnace table, the combined dust hood of the first two intermediate frequency furnaces is manufactured according to the embodiment 1, and the combined dust hood of the third intermediate frequency furnace is manufactured according to the embodiment 3, so that the operation is convenient and simple, and the utility model is favored by a stokehole worker.
Claims (8)
1. The utility model provides a medium frequency furnace combination dust excluding hood which characterized in that: comprises an upright post pipe (5), a tee joint, an elbow pipe (13) and a cover body (14); the vertical column pipe (5) is fixed on the furnace platform, the upper end of the vertical column pipe is communicated with the dust removing main pipe (1), a dust removing inlet (7) is formed in the upper portion of the vertical column pipe (5), and the tee joint is rotationally connected with the vertical column pipe (5) at the position of the dust removing inlet (7); the tee joint comprises a tee joint vertical pipe (3) and a tee joint horizontal pipe (10) which are communicated integrally, wherein the tee joint horizontal pipe (10) is connected with a flange plate fastener of an elbow pipe (13), and the elbow pipe (13) is fixedly connected with a cover body (14).
2. The intermediate frequency furnace combined dust hood according to claim 1, wherein: the upper end and the lower end of the tee joint vertical pipe (3) are fixedly connected with a rotary table (9), the rotary table (9) is rotationally connected with a fixed disc (2) fixed on the vertical pipe (5) through a small ball (4), and a matched U-shaped opening (15) is formed in the fixed disc (2) and the rotary table (9).
3. The intermediate frequency furnace combined dust hood according to claim 2, wherein: the fixed disc (2) and the rotary disc (9) are provided with matched grooves, and the small balls (4) roll and limit in the grooves.
4. The intermediate frequency furnace combined dust hood according to claim 1, wherein: the bent pipe (13) is connected with the three-way transverse pipe (10) by a hook (16) instead of a fastener; the hook (16) is welded and fixed on the flange plate of the bent pipe (13), the flange plate of the three-way transverse pipe (10) is welded with two steel plates (17), and the hook (16) is inserted between the two steel plates (17).
5. The intermediate frequency furnace combined dust hood according to claim 1, wherein: the cover body (14) is conical, and the height of the lower edge from the plane of the furnace table is 1.5-1.6 meters.
6. The intermediate frequency furnace combined dust hood according to claim 1, wherein: the cover body (14) is a dome, and the height of the lower edge from the plane of the furnace platform is 1.8-1.9 m; a steel pipe (21) is welded at the lower part of the cover body (14), a steel rod (20) is inserted into the steel pipe (21), and the steel rod (20) is fixedly welded on the movable plate (19); the height of the lower edge of the movable plate (19) from the plane of the furnace table is 1.5-1.6 meters.
7. The intermediate frequency furnace combined dust hood according to claim 1, wherein: the outer surface of the three-way transverse pipe (10) is welded with an outer rib plate (8) or the inner part of the three-way transverse pipe is welded with a vertical inner rib plate (18); and a bent pipe rib plate (12) is welded on the bent pipe (13).
8. The intermediate frequency furnace combined dust hood according to claim 1, wherein: the lower part of the upright post pipe (5) is provided with an ash removing opening (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320873971.1U CN219869168U (en) | 2023-04-19 | 2023-04-19 | Combined dust hood of intermediate frequency furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320873971.1U CN219869168U (en) | 2023-04-19 | 2023-04-19 | Combined dust hood of intermediate frequency furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219869168U true CN219869168U (en) | 2023-10-20 |
Family
ID=88342835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320873971.1U Active CN219869168U (en) | 2023-04-19 | 2023-04-19 | Combined dust hood of intermediate frequency furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219869168U (en) |
-
2023
- 2023-04-19 CN CN202320873971.1U patent/CN219869168U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1965093B (en) | Heat exchanger system | |
| CN102401563B (en) | Water-cooling furnace cover of ladle refining furnace with high-temperature camera shooting function | |
| CN219869168U (en) | Combined dust hood of intermediate frequency furnace | |
| US3026102A (en) | Hood post crane | |
| CN108796159B (en) | Modular detachable blast furnace cast house combined dust removal device | |
| CN208846983U (en) | A kind of smelting equipment flue gas processing device | |
| CN215440524U (en) | High-efficient automatic spray cooling equipment of blast furnace roof | |
| CN213179491U (en) | Movable dust collection hood for electric furnace | |
| CN210908090U (en) | Hot metal bottle capping system | |
| CN210663945U (en) | Water quenching slag discharging device of boiling chlorination furnace | |
| CN111020078B (en) | Slag falling pipe fixing device with preheating and cooling functions | |
| CN100537787C (en) | Integral furnace apron slag baffle | |
| US6418157B1 (en) | Roof for a metallurgical ladle/furnace | |
| CN206944734U (en) | Cantilevered intermediate frequency furnace dust trapping device | |
| CN204224624U (en) | The thick collection device of a kind of blast furnace gas dust | |
| CN216705185U (en) | Water-cooling roller cleaning device | |
| KR200175121Y1 (en) | Device for removing the metal underneath of smelting furnace hood | |
| CN104328234B (en) | A kind of thick collection device of blast furnace gas dust and method | |
| CN214096637U (en) | Blast furnace sampling device | |
| CN210385323U (en) | Dust removal system applied to iron works blast furnace cast house ore groove area | |
| CN220416238U (en) | Combined sealing device of matte grinding disc | |
| RU2775977C1 (en) | Covering extraction complex of the main duct of the blast furnace | |
| CN218781624U (en) | High-temperature-resistant corrosion-resistant stainless steel smelting furnace | |
| CN219010347U (en) | Converter converting operation equipment based on audio frequency slagging technique | |
| CN220187446U (en) | Dust collection cover of electric furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |