CN208475955U - A kind of electric arc furnaces - Google Patents
A kind of electric arc furnaces Download PDFInfo
- Publication number
- CN208475955U CN208475955U CN201821076033.4U CN201821076033U CN208475955U CN 208475955 U CN208475955 U CN 208475955U CN 201821076033 U CN201821076033 U CN 201821076033U CN 208475955 U CN208475955 U CN 208475955U
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- China
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- loading hopper
- electric arc
- arc furnaces
- cover board
- entrance
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Abstract
The utility model discloses a kind of electric arc furnaces, including loading hopper (3), arc furnace cover (10) and burner hearth, loading hopper (3) is located at outside the burner hearth, loading hopper (3) is tubular structure, the entrance of loading hopper (3) is upward, loading hopper (3) goes out mouth down, the outlet of loading hopper (3) is correspondingly connected with the charging aperture on arc furnace cover (10), and the entrance of loading hopper (3) is equipped with the overturning cover board (4) that can close the entrance.The function of automatic airtight when not fed by being easily opened when the overturning realization electric furnace charging of cover board 4 is arranged in the top of loading hopper, realization prevents that air is entered in furnace from the charging aperture on furnace lid outside furnace and inner flue gas of the stove is from charging aperture to external diffusion in EAF Steelmaking Process, does not influence the normal charging in smelting process while to reach sealed feeding hole again.
Description
Technical field
The utility model relates to smelting equipment field, a kind of particularly electric arc furnaces.
Background technique
Furnace lid loading hopper is all unlimited in EAF Steelmaking Process at present, is done so primarily to smelting process
In repeatedly frequently charging.But there are the flue gases in furnace can be entered in furnace by the excessive air to outside furnace or outside furnace of loading hopper.Furnace
Interior flue gas is excessive will lead to furnace heat loss and smelt the pollution of post environment and surrounding devices baked by high temperature it is bad.The outer air of furnace
Entered in furnace by loading hopper, has also brought a large amount of nitrogen and other inert gases, oxygen into while bringing 21% oxygen into
Gas enters in furnace the oxidation and consumption that will increase electrode, other gases in addition to oxygen, which enter, then will increase dedusting in electric furnace
System operating load, nitrogen cracks under high-temperature electric arc again after entering in furnace, so this smelting process will cause molten steel and increase
Nitrogen reduces Molten Steel Cleanliness.
Utility model content
In order to which the air solved the problems, such as outside furnace can enter in furnace.The utility model provides a kind of electric arc furnaces, the electric arc
Furnace is able to solve the problem that loading hopper cannot be closed in electric furnace high-temperature smelting process.
The utility model solves that technical application used by its technical problem is novel to be: a kind of electric arc furnaces, including loading hopper,
Arc furnace cover and burner hearth, loading hopper are located at outside the burner hearth, and loading hopper is tubular structure, and the entrance of loading hopper upward, feeds
Bucket goes out mouth down, and the charging aperture that outlet and the arc furnace of loading hopper cover is correspondingly connected with, and the entrance of loading hopper is equipped with can
Close the overturning cover board of the entrance.
Loading hopper contains sequentially connected boot segment, changeover portion and water cooling section from the top down, the center line and water of changeover portion
Cold section of center line is overlapped, and the center line of boot segment is arranged relative to the centerline dip of changeover portion.
Water cooling section contains water cooling coil pipe and inner tube wall, which is set to outside the inner tube wall, the lower end of water cooling section
It is connect by pin shaft with arc furnace cover.
The upper end of changeover portion is connected and fixed by the lower end of bolt and loading hopper, and the lower end of changeover portion passes through bolt and water cooling
The upper end of section is connected and fixed.
The internal diameter of changeover portion is greater than or equal to the internal diameter of water cooling section, and the internal diameter of changeover portion is less than or equal to the lower end of boot segment
Internal diameter, the internal diameter of the upper end of boot segment is greater than the internal diameter of the lower end of boot segment.
Boot segment contains direct tube section and conical cylinder section setting up and down, and the section of direct tube section is rectangle, and the section of conical cylinder section is
It is round.
Plane where the entrance of loading hopper is inclined relative to horizontal setting, and the entrance of loading hopper contains on sequentially connected
Side, left side, lower side and right edge.
It overturns cover board to connect by the entrance of support shaft and loading hopper, overturning cover board can be with the center line of support shaft
It is rotated for axis, the center line of support shaft is parallel with the upper side edge.
Overturn cover board and counterweight be connected with by connecting rod, counterweight is located at outside loading hopper, support shaft be located at overturn cover board with
Between counterweight.
Connecting rod is warp architecture, and counterweight can be close to or far from overturning cover board.
The beneficial effects of the utility model are: the electric arc furnaces can prevent in steelmaking process outside furnace air by furnace lid
On charging aperture enter in furnace and inner flue gas of the stove is from charging aperture to external diffusion, do not influenced again while to reach sealed feeding hole
Normal charging in smelting process.It is greatly decreased into the air in furnace, to reduce the flue gas into Eaf'S Dusting System
Amount, thereby reduces the load and energy consumption of electric stove dust；It is greatly decreased into the air in furnace, it is possible to reduce furnace high-temperature is red-hot
Electrode is by the dioxygen oxidation in air, to reduce consumption；It is greatly decreased into the air in furnace, it is possible to reduce produced in furnace
The oxygen of reducibility gas brought by air carries out secondary oxidation or burning, so that the content of reducing gas in flue gas is improved,
Be conducive to the further recycling and utilization of the reducibility gas generated in furnace；With significant energy conservation and consumption reduction effects.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Fig. 1 is the top view of electric arc furnaces described in the utility model.
Fig. 2 is in Fig. 1 along the cross-sectional view in the direction A-A.
Fig. 3 is the enlarged diagram at the position B in Fig. 2.
Fig. 4 is the enlarged diagram at the position C in Fig. 2.
Fig. 5 is the schematic diagram for overturning cover board in closed state.
Fig. 6 is to overturn the schematic diagram of cover board in the open mode.
1, water cooling section；2, changeover portion；3, loading hopper；4, cover board is overturn；5, feeding chute；6, support shaft；7, counterweight；8,
Bolt；9, pin shaft；10, arc furnace cover；11, boot segment；12, connecting rod；
111, direct tube section；112, conical cylinder section.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of electric arc furnaces, including loading hopper 3, arc furnace cover 10 and burner hearth, loading hopper 3 are located at outside the burner hearth, and add
Hopper 3 is located at the top of the burner hearth, and loading hopper 3 is tubular structure, and the entrance of loading hopper 3 is generally towards upper, the outlet of loading hopper 3
Generally downward, the outlet of loading hopper 3 is correspondingly connected with the charging aperture on arc furnace cover 10, and the entrance of loading hopper 3 is equipped with can
The overturning cover board 4 of the entrance is closed, as shown in Figures 1 to 5.
It is automatically close when not fed by being easily opened when the overturning realization electric furnace charging of cover board 4 is arranged in the top of loading hopper 3
The function of closing, realization prevent air outside furnace from being entered in furnace and in furnace by the charging aperture on furnace lid in EAF Steelmaking Process
Flue gas does not influence the normal charging in smelting process from charging aperture to external diffusion, while to reach sealed feeding hole again.
In the present embodiment, loading hopper 3 contains sequentially connected boot segment 11, changeover portion 2 and water cooling section 1 from the top down,
The center line of changeover portion 2 and the center line of water cooling section 1 are overlapped, and the center line of boot segment 11 inclines relative to the center line of changeover portion 2
Tiltedly setting, as shown in Figure 2.
In the present embodiment, water cooling section 1 contains water cooling coil pipe and inner tube wall, which is set to the inner tube wall
Outside, the lower end of water cooling section 1 is connect by pin shaft 9 with arc furnace cover 10, as shown in Figure 4.By way of pin shaft and electric furnace
The replacement easy to connect of lid, the design of water cooling section 1 can bear the hyperthermia radiation in furnace.
In the present embodiment, the upper end of changeover portion 2 is connected and fixed by bolt 8 and the lower end of loading hopper 3, changeover portion 2
Lower end is connected and fixed by bolt 8 and the upper end of water cooling section 1, as shown in Figure 3.The changeover portion 2 is by bolt and water cooling section 1 and adds
Hopper 3 connects, easy to disassemble and replacement.
In the present embodiment, the internal diameter of changeover portion 2 be greater than or equal to water cooling section 1 internal diameter, the internal diameter of changeover portion 2 be less than or
Equal to the internal diameter of the lower end of boot segment 11, the internal diameter of the upper end of boot segment 11 is greater than the internal diameter of the lower end of boot segment 11, such as Fig. 2 institute
Show.
In the present embodiment, boot segment 11 contains direct tube section 111 and conical cylinder section 112 setting up and down, and direct tube section 111 breaks
Face is rectangle, and the section of preferably direct tube section 111 is square, and the section of conical cylinder section 112 is circle.The top court of conical cylinder section 112
Under, the bottom end of conical cylinder section 112 is upward.
In the present embodiment, plane where the entrance of loading hopper 3 is inclined relative to horizontal setting, and overturning cover board 4 is sealing
It is also to be obliquely installed when closed state, so that the entrance of loading hopper 3 be closed, i.e., overturning cover board 4 is normal in the inlet of loading hopper 3
Closed state, the entrance of loading hopper 3 contain sequentially connected upper side edge, left side, lower side and right edge.The entrance of loading hopper 3
It is all made of inclined design with overturning cover board 4, automatic airtight when being easily opened and not feeding when electric furnace charging can be well realized
Function.It is preferred that the centerline parallel of cover board 4 and loading hopper 3 is overturn, such as Fig. 6 institute when overturning cover board 4 in the open state
Show.
In the present embodiment, overturning cover board 4 is connect by support shaft 6 with the entrance of loading hopper 3, and overturning cover board 4 can
It is rotated by axis of the center line of support shaft 6, thus convert overturning cover board 4 between closed state and opening state, support
The center line of shaft 6 is parallel with the upper side edge, as shown in Figure 5.Turn when overturning cover board 4 needs closed state to opening state
When change, the turning inside out to loading hopper 3 of cover board 4 is overturn, counterweight 7 is rotated up, as shown in Figure 6.It is to make to turn over that counterweight 7, which is arranged,
Hub cap plate 4 is in normally off, as long as counterweight 7 is more heavier than the weight for overturning cover board 4, counterweight 7 is about 3kg or so.
The function of automatic airtight when being easily opened and not feeding when in the present embodiment, in order to realize electric furnace charging, overturning
Cover board 4 is connected with counterweight 7 by connecting rod 12, and counterweight 7 is located at outside loading hopper 3, and support shaft 6 is located at overturning cover board 4 and counterweight 7
Between, connecting rod 12 is equivalent to lever, and support shaft 6 is equivalent to fulcrum.Connecting rod 12 is warp architecture, and counterweight 7 is connecting
Position on bar 12 can be adjusted, to enable counterweight 7 close to or far from overturning cover board 4.Wherein, the weight of counterweight 7 and position
The requirement set is can be in closed state as shown in Figure 5 by self weight in overturning cover board 4.
When electric arc furnaces described in the utility model needs to feed, the feeding chute 5 from charging system will rotate to
The top of loading hopper 3, feeding chute 5 can push overturning cover board open during feeding chute 5 is overlapped with 3 center line of loading hopper
4, that is, overturning cover board 4 is made to turn to opening state shown in fig. 6, after elephant trunk 5 to be fed is overlapped with 3 center line of loading hopper,
The position sensor of feeding chute 5 can send charging instruction charging in loading hopper 3, after feeding chute 5 adds material,
Will cycle wait position, at this time overturn cover board 4 be just re-closing off under the action of own wt, realize loading hopper 3 it is closed.
The above, only specific embodiment of the utility model cannot limit the range that utility model is implemented, institute with it
With the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection scope and modification, should all still fall within
The scope that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical application
Between novel, technical application it is novel it is novel with technical application between use can be freely combined.
Claims (10)
1. a kind of electric arc furnaces, which is characterized in that the electric arc furnaces includes loading hopper (3), arc furnace cover (10) and burner hearth, loading hopper
(3) be located at the burner hearth outside, loading hopper (3) be tubular structure, the entrance of loading hopper (3) upward, the outlet court of loading hopper (3)
Under, outlet and the charging aperture on arc furnace cover (10) of loading hopper (3) are correspondingly connected with, and the entrance of loading hopper (3) is equipped with can
Close the overturning cover board (4) of the entrance.
2. electric arc furnaces according to claim 1, which is characterized in that loading hopper (3) draws containing sequentially connected from the top down
Section (11), changeover portion (2) and water cooling section (1) are led, the center line of changeover portion (2) and the center line of water cooling section (1) are overlapped, boot segment
(11) center line is arranged relative to the centerline dip of changeover portion (2).
3. electric arc furnaces according to claim 2, which is characterized in that water cooling section (1) contains water cooling coil pipe and inner tube wall, the water
Cooling coil is sheathed on outside the inner tube wall, and the lower end of water cooling section (1) is connect by pin shaft (9) with arc furnace cover (10).
4. electric arc furnaces according to claim 2, which is characterized in that the upper end of changeover portion (2) passes through bolt (8) and loading hopper
(3) lower end is connected and fixed, and the lower end of changeover portion (2) is connected and fixed by bolt (8) and the upper end of water cooling section (1).
5. electric arc furnaces according to claim 2, which is characterized in that the internal diameter of changeover portion (2) is greater than or equal to water cooling section (1)
Internal diameter, the internal diameter of changeover portion (2) is less than or equal to the internal diameter of the lower end of boot segment (11), the internal diameter of the upper end of boot segment (11)
Greater than the internal diameter of the lower end of boot segment (11).
6. electric arc furnaces according to claim 2, which is characterized in that boot segment (11) contains direct tube section setting up and down
(111) and conical cylinder section (112), the section of direct tube section (111) are rectangle, and the section of conical cylinder section (112) is circle.
7. electric arc furnaces according to claim 6, which is characterized in that plane is relative to level where the entrance of loading hopper (3)
Face is obliquely installed, and the entrance of loading hopper (3) contains sequentially connected upper side edge, left side, lower side and right edge.
8. electric arc furnaces according to claim 7, which is characterized in that overturning cover board (4) passes through support shaft (6) and loading hopper
(3) entrance connection, overturning cover board (4) can be rotated by axis of the center line of support shaft (6), the center of support shaft (6)
Line is parallel with the upper side edge.
9. electric arc furnaces according to claim 8, which is characterized in that overturning cover board (4) is connected with by connecting rod (12) matches
Weight (7), counterweight (7) are located at loading hopper (3) outside, and support shaft (6) is located between overturning cover board (4) and counterweight (7).
10. electric arc furnaces according to claim 9, which is characterized in that connecting rod (12) is warp architecture, and counterweight (7) can
Close to or far from overturning cover board (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821076033.4U CN208475955U (en) | 2018-07-09 | 2018-07-09 | A kind of electric arc furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821076033.4U CN208475955U (en) | 2018-07-09 | 2018-07-09 | A kind of electric arc furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208475955U true CN208475955U (en) | 2019-02-05 |
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ID=65213583
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821076033.4U Active CN208475955U (en) | 2018-07-09 | 2018-07-09 | A kind of electric arc furnaces |
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| Country | Link |
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| CN (1) | CN208475955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709419A (en) * | 2018-07-09 | 2018-10-26 | 中冶京诚工程技术有限公司 | A kind of electric arc furnaces |
-
2018
- 2018-07-09 CN CN201821076033.4U patent/CN208475955U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709419A (en) * | 2018-07-09 | 2018-10-26 | 中冶京诚工程技术有限公司 | A kind of electric arc furnaces |
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