CN111174591A - End sealing device for preheating section of continuous feeding device of electric furnace - Google Patents
End sealing device for preheating section of continuous feeding device of electric furnace Download PDFInfo
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- CN111174591A CN111174591A CN201911230029.8A CN201911230029A CN111174591A CN 111174591 A CN111174591 A CN 111174591A CN 201911230029 A CN201911230029 A CN 201911230029A CN 111174591 A CN111174591 A CN 111174591A
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- flue gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
- F27D13/002—Preheating scrap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses an end sealing device for a preheating section of a continuous feeding device of an electric furnace, which comprises: the device comprises a preheating section flue gas cover, an exhaust hood and a connecting cover, wherein a first sealing device is arranged at the feed end of the preheating section flue gas cover, and a second sealing device is arranged at the feed end of the connecting cover; at least one of the first and second sealing devices comprises: the connecting axle, a plurality of sealing members and baffle, the connecting axle is connected on preheating section flue gas cover or connecting cover, but sealing member pivot ground cover is established on the connecting axle, the swing end of sealing member is suitable for the butt at the upper surface of scrap steel, the axial arrangement of a plurality of sealing members along the connecting axle, the relative surface of adjacent sealing member ends the contact of supporting, the swing end of sealing member is suitable for the butt and swings at the upper surface of scrap steel and the height fluctuation of the upper surface of scrap steel, utilize sealing device can prevent that the high temperature flue gas in the section flue gas cover of predetermineeing when the air draft cover convulsions the process from taking out through the air draft cover, and then can promote the temperature in the.
Description
Technical Field
The invention relates to the technical field of metallurgy equipment, in particular to an end sealing device for a preheating section of a continuous feeding device of an electric furnace.
Background
Converter steelmaking and electric furnace steelmaking exist in the existing metallurgical industry, the energy production of steel in China is expanded in recent years, the steel yield reaches 7 hundred million tons, and the problem of excess capacity exists. With the increase of the national environmental protection and the increasing of the policy force for going to the productivity, the steelmaking capacity of the converter is reduced, and the steelmaking capacity of the electric furnace is gradually enlarged. In the electric furnace steelmaking process, a Consteel electric furnace with a continuous charging preheating system is favored by metallurgical users due to the characteristics of scrap steel preheating, continuous steelmaking, quick pace and the like.
A great deal of dust-containing high-temperature flue gas is generated in the production of a Consteel electric furnace, the dust content in the flue gas is about 8-15g/m3, the temperature of the flue gas is up to 1200-1250 ℃, and the direct emission cannot meet the environmental protection requirement.
The scrap steel preheating section of the Consteel electric furnace is used for preheating scrap steel, a dynamic air sealing device is adopted at the end part of the preheating section, dust-containing air extracted by the dynamic air sealing device is discharged into the upper space of the electric furnace, and although the dust-containing air can be introduced into a secondary dust removal system of the electric furnace for dust removal, the difficulty in collecting the dust-containing air is increased. Meanwhile, the dynamic sealing part at the tail part of the waste steel preheating section flue gas cover is difficult to control in pressure difference, air leakage is large, the primary dust removal effect of the electric furnace is influenced, a large amount of air leakage is caused, and the sensible heat and the quality of the flue gas are reduced. As for the reduction of air leakage, the methods adopted at present basically comprise two methods, one is to hang a rigid sealing plate at the end part of a smoke gas hood of an electric furnace continuous charging preheating system, and the other is to hang a flexible chain at the end part of the smoke gas hood. In the second sealing method, the chain is easily damaged due to the fact that the chain is scratched seriously by the sharp convex part of the scrap steel, and the sealing effect is not good due to the fact that large gaps exist between the chain and between the links of the same chain. Because the sealing effect is not good, the control difficulty of the pressure difference of the dynamic sealing part at the tail part of the flue gas cover is high, the air leakage is large, a large amount of air leakage is involved in the flue gas of the electric furnace, the sensible heat and the quality of the flue gas are reduced, and the waste heat recovery effect is poor.
Therefore, the key of the smoke dust removal system of the Consteel electric furnace is to reduce the difficulty of collecting dust-containing air extracted by the dynamic air sealing device and reduce the air leakage rate.
Disclosure of Invention
The invention provides an end sealing device for a preheating section of a continuous feeding electric furnace, aiming at solving the problem of large air leakage at the end of the continuous feeding electric furnace, which can not only greatly reduce the air leakage problem of the continuous feeding electric furnace, but also improve the temperature in a flue gas cover at a preset section and improve the preheating effect of scrap steel.
The end sealing device for the preheating section of the continuous feeding device of the electric furnace according to the embodiment of the invention comprises: the preheating section flue gas hood is arranged at the upper part of the feed chute, a flue gas outlet is formed in the top of the preheating section flue gas hood, and a first sealing device is arranged at the feed end of the preheating section flue gas hood; the air draft cover is connected with one side of the preheating section flue gas cover provided with a first sealing device, and an air draft opening is formed in the top of the air draft cover; the connecting cover is connected with the feeding end of the exhaust hood, and a second sealing device is arranged at the feeding end of the connecting cover; at least one of the first and second sealing devices comprises: the connecting shaft is connected to the preheating section flue gas cover or the connecting cover and extends along the width direction of the cover body; the sealing elements are pivotally sleeved on the connecting shaft, the swinging ends of the sealing elements are suitable for abutting against the upper surface of the scrap steel, the sealing elements are arranged along the axial direction of the connecting shaft, and the opposite surfaces of the adjacent sealing elements are in abutting contact; and the baffle is connected between the flue gas cover or the connecting cover and the rotating shaft, and the baffle and the cover body are as wide as each other.
According to one embodiment of the invention, the sealing element is formed in a fan-shaped structure freely suspended on the connecting shaft, and the thickness of the sealing element is 3 mm-200 mm.
According to one embodiment of the invention, the seal is formed as a hollow structure.
According to an embodiment of the present invention, the sealing members are each formed with a connection hole through which the connection shaft passes, and at least a part of an outer peripheral edge of the sealing member is formed in a circular arc shape that is coaxially arranged with the connection hole.
According to an embodiment of the invention, the seal further comprises: the sliding wheel is rotatably connected to the bottom of the sealing element and protrudes out of the bottom of the sealing element to be in contact with the upper surface of the scrap steel in a stopping manner.
According to one embodiment of the invention, the sum of the thicknesses of the sealing elements in the flue gas hood at the preset section is equal to the width of the inner cavity of the flue gas hood at the preset section, and one side surface of the sealing element at the end part of the connecting shaft is in stop contact with the inner peripheral wall of the flue gas hood at the preset section; the sum of the thicknesses of the sealing elements in the connecting cover is equal to the width of an inner cavity of the connecting cover, and one side surface of the sealing element at the end part of the connecting shaft is in stop contact with the inner peripheral wall of the connecting cover.
The beneficial technical effects are as follows: according to the end sealing device for the preheating section of the continuous feeding device of the electric furnace, provided by the embodiment of the invention, the first sealing device is arranged at one end, away from the feeding hole, of the flue gas hood of the preset section, and the second sealing device is arranged at one end, away from the electric furnace, of the connecting cover, and the first sealing device and the second sealing device are utilized to clamp the air draft cover in the middle, so that high-temperature flue gas in the flue gas hood of the preset section can be prevented from being drawn out through the air draft cover during the air draft process of the air draft cover, the temperature in the flue gas hood of the preset section can be increased, and the preheating effect of.
In addition, utilize connecting axle and a plurality of sealing member cooperation to realize sealing to continuous feeding electric stove, simple structure not only can realize the sealed effect in the continuous feeding process, and the sealing member can take place corresponding unsteady change according to the fluctuation of scrap steel upper surface moreover, can ensure that first sealing device and second sealing device can not influence sealed effect because of the volume of scrap steel is too big or undersize in the continuous feeding process of scrap steel.
Drawings
FIG. 1 is a schematic structural view of an end sealing device for a preheating section of a continuous feeding apparatus of an electric furnace according to an embodiment of the present invention;
3 FIG. 32 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 31 3; 3
FIG. 3 is a schematic structural view of a seal according to an embodiment of the present invention;
FIG. 4 is a side view of the structure of FIG. 3;
FIG. 5 is a schematic structural view of a seal according to another embodiment of the present invention;
fig. 6 is a side view of the structure of fig. 5.
In the figure:
10: an electric furnace; 11: a feed inlet; 21: scrap steel;
30: presetting a section flue gas cover; 31: a flue gas outlet; 32: a first sealing device; 321: a connecting shaft; 322: a seal member; 323: a first sealing plate; 324: a second sealing plate; 325: a connecting plate; 326: a baffle plate; 327: a sliding wheel;
40: a connecting cover; 41: a second sealing device;
50: an air draft cover; 51: an air suction opening.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
An end sealing device for a preheating section of a continuous feeding apparatus of an electric furnace according to an embodiment of the present invention will be described with reference to fig. 1 to 6.
The end sealing device for the preheating section of the continuous feeding device of the electric furnace according to the embodiment of the invention comprises: the preheating section flue gas cover 30 is arranged at the upper part of the trough, a flue gas outlet 31 is formed in the top of the preheating section flue gas cover 30, a first sealing device 32 is arranged at the feed end of the preheating section flue gas cover 30 and is connected with one side of the preheating section flue gas cover provided with the first sealing device 32, an air suction opening 51 is formed in the top of the air suction cover 50 and is connected with the feed end of the air suction cover 50, and a second sealing device 41 is arranged at the feed end of the connecting cover 40.
At least one of the first sealing device 32 and the second sealing device 41 includes: the connecting shaft 321 is connected to the preheating section flue gas cover 30 or the connecting cover 40 and extends along the width direction of the cover body, the sealing members 322 are pivotally sleeved on the connecting shaft 321, the swinging ends of the sealing members 322 are suitable for abutting against the upper surface of the scrap steel 21, the sealing members 322 are arranged along the axial direction of the connecting shaft 321, the opposite surfaces of the adjacent sealing members 322 are in abutting contact with the flue gas cover 30 or the connecting cover 40, a baffle 7 is connected between the rotating shaft 6, and the baffle 7 and the cover body are as wide as each other.
According to an embodiment of the present invention, the sealing member 322 is formed in a fan-shaped structure freely suspended on the connecting shaft 321, and the thickness of the sealing member 322 is 3mm to 200 mm.
According to one embodiment of the present invention, the sealing member 322 is formed as a hollow structure.
According to an embodiment of the present invention, the sealing members 322 are each formed with a coupling hole through which the coupling shaft 321 passes, and at least a portion of an outer circumferential edge of the sealing member 322 is formed in a circular arc shape coaxially disposed with the coupling hole.
According to an embodiment of the invention, the seal 322 further comprises: and the sliding wheel 327 is rotatably connected to the bottom of the sealing member 322, and the sliding wheel 327 protrudes out of the bottom of the sealing member 322 and stops contacting the upper surface of the scrap steel 21.
The end sealing device for the preheating section of the continuous feeding device of the electric furnace according to the embodiment of the invention comprises: electric stove 10, predetermine section flue gas cover 30, connecting cover 40 and draft hood 50, one side of electric stove 10 has feed inlet 11, predetermine section flue gas cover 30 and electric stove 10 and link to each other and close on feed inlet 11 setting, be equipped with the pay-off link joint that moves towards feed inlet 11 on predetermineeing section flue gas cover 30, the pay-off link joint is used for sending into feed inlet 11 with the scrap steel 21 on predetermineeing section flue gas cover 30, wherein, the pay-off link joint can include two and extend and encircle the chain that predetermineeing section flue gas cover 30 and set up along the length direction of predetermineeing section flue gas cover 30, be equipped with between the chain and extend and establish the link joint of a setting along predetermineeing section flue gas cover 30 width direction and along chain length direction, the chain drives the link joint and removes.
Wherein, the preset section flue gas hood 30 is communicated with the electric furnace 10, a flue gas outlet 31 communicated with the inner cavity of the preset section flue gas hood 30 is formed at the top of the preset section flue gas hood 30, a first sealing device 32 is arranged at one end of the preset section flue gas hood 30 far away from the feed inlet 11, a connecting hood 40 is covered at the part of the preset section flue gas hood 30 far away from the electric furnace 10, a second sealing device 41 is arranged at one end of the connecting hood 40 far away from the electric furnace 10, a suction hood 50 is covered on the preset section flue gas hood 30 and is positioned between the preset section flue gas hood 30 and the connecting hood 40, one end of the suction hood 50 is hermetically connected with the preset section flue gas hood 30, the other end of the suction hood 50 is hermetically connected with the connecting hood 40, a suction opening 51 is formed at the top of the suction hood 50, the suction opening 51 is communicated with an exhaust fan, the first sealing device 32 is arranged at one end of the preset section flue gas hood 30 far away from the feed inlet 11, and a second, utilize first sealing device 32 and second sealing device 41 to press from both sides draft cover 50 in the middle, can prevent that the high temperature flue gas in the section flue gas cover 30 of predetermineeing when the draft cover 50 convulsions process from taking out through draft cover 50, not only can promote the temperature in the section flue gas cover 30 of predetermineeing, can promote the effect of preheating of scrap steel 21 moreover.
Further, at least one of the first sealing device 32 and the second sealing device 41 includes: the connecting shaft 321 is connected to the preset section flue gas cover 30 or the connecting cover 40 and extends along the width direction of the preset section flue gas cover 30, the sealing member 322 is pivotally sleeved on the connecting shaft 321, the swinging end of the sealing member 322 is suitable for abutting against the upper surface of the scrap steel 21 and the height of the upper surface of the scrap steel 21 swings up and down, the sealing members 322 are arranged along the axial direction of the connecting shaft 321, and the opposite surfaces of the adjacent sealing members 322 are in abutting contact.
That is to say, the sealing elements 322 are arranged along the width direction of the preset section flue gas cover 30, the upper end of the sealing element 322 is connected to the preset section flue gas cover 30 or the connecting cover 40, the lower end is supported on the scrap steel 21, because the adjacent sealing elements 322 are in abutting contact, a sealing device arranged along the section direction of the preset section flue gas cover 30 can be formed, because the sealing elements 322 can be arranged in a pivoting manner, the lower end of the sealing element 322 correspondingly floats along with the fluctuation of the scrap steel 21, and the sealing effect of the sealing element 322 on the preset section flue gas cover 30 is ensured.
According to the end sealing device for the preheating section of the continuous feeding device of the electric furnace, the first sealing device 32 and the second sealing device 41 prevent the smoke from flowing freely between the cavities of the smoke cover, so that most of the smoke passes through the scrap steel 21 at the lower parts of the first sealing device 32 and the second sealing device 41, the convection heat exchange between the smoke of the electric furnace 10 and the scrap steel 21 is enhanced, the preheating temperature of the scrap steel 21 is improved by over 100 ℃, the continuous feeding electric furnace 10 is sealed by matching the connecting shaft 321 with the plurality of sealing elements 322, the structure is simple, the sealing effect in the continuous feeding process can be realized, and the sealing member 322 may be varied in floating according to the undulation of the upper surface of the scrap steel 21, the first sealing device 32 and the second sealing device 41 can be ensured not to influence the sealing effect because the amount of the scrap steel 21 is too large or too small in the continuous feeding process of the scrap steel 21. And the lower edge of the sealing device formed by the plurality of sealing elements 322 is fitted with the curve step-shaped fitting formed by the highest points of the plurality of scrap steel 21 or materials in the section perpendicular to the advancing direction of the scrap steel 21 or materials, so that the gap between the lower edge of the sealing element and the scrap steel 21 or materials is greatly reduced, and the air leakage is reduced by 60 percent.
According to an embodiment of the present invention, the sealing member 322 is formed in a plate shape perpendicular to the connecting shaft 321, the sealing member 322 having a plate shape structure has a simple structure, and is conveniently matched with the connecting shaft 321, and when the side surfaces of the adjacent plate-shaped sealing members 322 are matched, the sealing effect is good, and air leakage between the adjacent sealing members 322 is prevented.
The sealing rigid body is gradually inclined towards the feed opening 11 from top to bottom, that is, the sealing element 322 is inclined along the conveying direction of the feeding chain plate, so that the friction force between the sealing element 322 and the feeding chain plate can be reduced, the feeding chain plate and the sealing element 322 can be prevented from colliding and being damaged, and the self-locking condition caused by the matching of the feeding chain plate and the sealing element 322 can be prevented.
Further, the thickness of the sealing member 322 is 3mm to 200mm, and the thickness of the sealing member 322 is limited to the above range, so that the sealing effect of the sealing member 322 can be improved.
According to one embodiment of the invention, the seal 322 comprises: the sealing structure comprises a first sealing plate 323, a second sealing plate 324 and a connecting plate 325, wherein the first sealing plate 323 and the second sealing plate 324 are pivotally sleeved on a connecting shaft 321, the first sealing plate 323 and the second sealing plate 324 are arranged in parallel and have the same structure, the first sealing plate 323 and the second sealing plate 324 are arranged at intervals along the axial direction of the connecting shaft 321, the surface of the first sealing plate 323, which faces away from the second sealing plate 324, is in abutting contact with the surface of the second sealing plate 324, which faces away from the first sealing plate 323, of an adjacent sealing member 322, and the connecting plate 325 is connected between the outer peripheral edge of the first sealing plate 323 and the outer peripheral edge of the second sealing plate 324.
That is, the sealing member 322 is formed in a hollow structure, and the first sealing plate 323, the second sealing plate 324 and the connection plate 325 are used to constitute the sealing member 322 in cooperation, so that the weight and material input of the sealing member 322 can be reduced, the production cost of the sealing member 322 can be reduced, and the assembly and maintenance efficiency of the sealing member 322 can be improved.
According to one embodiment of the present invention, the connection plate 325 is formed in a ring shape disposed around the first and second sealing plates 323 and 324. By the annular connecting plate 325, the steel fume can leak through the gap between the first sealing plate 323 and the second sealing plate 324, and the sealing effect of the sealing element 322 is further improved.
According to an embodiment of the present invention, each of the first sealing plate 323 and the second sealing plate 324 is formed with a connection hole through which the connection shaft 321 passes, and at least a portion of an outer circumferential edge of the first sealing plate 323 and the second sealing plate 324 is formed in a circular arc shape coaxially disposed with the connection hole. At least one of the first sealing device 32 and the second sealing device 41 further comprises: the baffle 326 extends along the axial direction of the connecting shaft 321, one side of the baffle 326 in the width direction is connected to the preset section flue gas cover 30 or the connecting cover 40, and the other side of the baffle 326 in the width direction is in stop contact with the outer surface of the connecting plate 325 corresponding to the arc shape.
By arranging the circular arc structures on the first sealing plate 323 and the second sealing plate 324, when the sealing member 322 rotates relative to the connecting shaft 321, the distance between the connecting plate 325 corresponding to the circular arc structures and the connecting cover 40 or between the connecting plate 325 and the preset section flue gas cover 30 is not changed, so that the gap between the sealing member 322 and the connecting cover 40 and the gap between the sealing member 322 and the preset section flue gas cover 30 can be closed by using the baffle 326 with fixed size, and the flue gas is prevented from leaking through the top of the sealing member 322.
According to an embodiment of the invention, the seal 322 further comprises: the sliding wheel 327 is rotatably connected between the swing end of the first sealing plate 323 and the swing end of the second sealing plate 324, a clearance gap suitable for the sliding wheel 327 to protrude out of the outer peripheral edge of the first sealing plate 323 and the outer peripheral edge of the second sealing plate 324 is formed in the connecting plate 325, and the part of the sliding wheel 327 protruding out of the clearance gap is suitable for preventing the sliding wheel 327 from contacting the upper surface of the scrap steel 21.
The sliding wheel 327 is arranged at the bottom of the sealing element 322, the sliding wheel 327 can be arranged on the surface of the scrap steel 21 in a sliding mode, the sliding friction between the sealing element 322 and the scrap steel 21 is replaced by the rotating friction, the friction force between the sealing element 322 and the scrap steel 21 is greatly reduced, the sealing element 322 can be prevented from being damaged, and the service life of the sealing element 322 is prolonged.
According to one embodiment of the invention, the sum of the thicknesses of the sealing elements 322 in the preset section flue gas cover 30 is equal to the width of the inner cavity of the preset section flue gas cover 30, and one side surface of the sealing element 322 at the end part of the connecting shaft 321 is in stop contact with the inner peripheral wall of the preset section flue gas cover 30; the sum of the thicknesses of the sealing members 322 in the connecting cover 40 is equal to the width of the inner cavity of the connecting cover 40, and one side surface of the sealing member 322 at the end of the connecting shaft 321 comes into contact with the inner peripheral wall of the connecting cover 40.
Therefore, the sealing effect between the two sides of the sealing element 322 and the inner peripheral wall of the preset section flue gas cover 30 or the connecting cover 40 can be ensured, and the flue gas is prevented from leaking out through the gap between the sealing element 322 and the inner side wall of the preset section flue gas cover 30 or the connecting cover 40.
According to an embodiment of the present invention, the flue gas outlet 31 is communicated with a cooling device, one side of the cooling device, which is back to the flue gas outlet 31, is communicated with a dust remover, one side of the dust remover, which is back to the cooling device, is communicated with an induced draft fan, and one side of the induced draft fan, which is back to the dust remover, is communicated with a chimney.
Through set up the draught fan at exhanst gas outlet 31 and guide the flue gas to flow out through exhanst gas outlet 31, intercommunication heat sink and dust remover on exhanst gas outlet 31 can prevent that the smoke and dust from getting into the atmosphere polluted environment.
Further, in some embodiments, the cooling device comprises: the cooling chamber is internally provided with a plurality of first heat exchange tubes which are arranged around the inner peripheral wall of the cooling chamber, one end of each first heat exchange tube is communicated with a cooling tube, the waste heat boiler is communicated with the cooling chamber, the waste heat boiler is internally provided with a plurality of second heat exchange tubes which are arranged around the inner peripheral wall of the waste heat boiler, one end of the second heat exchange tube is communicated with one end of the first heat exchange tube back to the cooling tube, the front cooling chamber communicated with the preheating section smoke hood and the rear cooling chamber communicated with the front cooling chamber, the upper end of the front cooling chamber is communicated with the preheating section smoke hood, the upper end of the rear cooling chamber is communicated with the waste heat boiler, the lower end of the front cooling chamber is communicated with the lower end of the rear cooling chamber, the ash settling chamber is positioned below the front cooling chamber and the rear cooling chamber, and the lower end of the front cooling chamber is communicated with the top of the ash settling chamber, and the lower end of the rear cooling chamber is communicated with the top of the ash settling chamber.
Through setting up exhaust-heat boiler and deposit the ash chamber, can further reduce the flue gas temperature, and then eliminate the dust in the flue gas.
The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (6)
1. An end seal for a preheating section of a continuous feeder for electric furnaces, comprising:
the preheating section flue gas cover (30) is arranged at the upper part of the feed trough, a flue gas outlet (31) is formed in the top of the preheating section flue gas cover (30), and a first sealing device (32) is arranged at the feed end of the preheating section flue gas cover (30);
the air draft cover (50) is connected with one side of a preheating section flue gas cover provided with a first sealing device (32), and an air draft opening (51) is formed at the top of the air draft cover (50);
the connecting cover (40) is connected with the feed end of the exhaust hood (50), and a second sealing device (41) is arranged at the feed end of the connecting cover (40);
at least one of the first sealing device (32) and the second sealing device (41) comprises:
the connecting shaft (321) is connected to the preheating section flue gas cover (30) or the connecting cover (40) and extends along the width direction of the cover body;
the sealing elements (322) are pivotally sleeved on the connecting shaft (321), the swinging ends of the sealing elements (322) are suitable for abutting against the upper surface of the scrap steel (21), the sealing elements (322) are arranged along the axial direction of the connecting shaft (321), and the opposite surfaces of the adjacent sealing elements (322) are in abutting contact;
the flue gas cover (30) or the connecting cover (40) and the rotating shaft (6) are connected with a baffle (7) therebetween, and the baffle (7) and the cover body are as wide as each other.
2. The end sealing device for the preheating section of the continuous feeding apparatus of the electric furnace according to claim 1, wherein the sealing member (322) is formed in a fan-shaped structure freely suspended from the connecting shaft (321), and the thickness of the sealing member (322) is 3mm to 200 mm.
3. The end sealing device for the preheating section of the continuous feeder of electric furnaces as claimed in claim 1, wherein the sealing member (322) is formed in a hollow structure.
4. The end sealing device for the preheating section of the electric furnace continuous feeding apparatus according to claim 1, wherein the sealing members (322) are each formed with a coupling hole through which the coupling shaft (321) passes, and at least a portion of an outer circumferential edge of the sealing member (322) is formed in a circular arc shape coaxially disposed with the coupling hole.
5. The end seal for the preheating section of an electric furnace continuous feeder according to claim 1, wherein the sealing member (322) further comprises:
the sliding wheel (327) is rotatably connected to the bottom of the sealing element (322), and the sliding wheel (327) protrudes out of the bottom of the sealing element (322) and is in contact with the upper surface of the scrap steel (21) in a stopping way.
6. The end sealing device for the preheating section of the continuous feeding device of the electric furnace according to claim 1, characterized in that the sum of the thicknesses of the sealing pieces (322) in the flue gas hood (30) of the preset section is equal to the width of the inner cavity of the flue gas hood (30) of the preset section, and one side surface of the sealing piece (322) at the end of the connecting shaft (321) is in contact with the inner peripheral wall of the flue gas hood (30) of the preset section in a stop way;
the sum of the thicknesses of the sealing elements (322) in the connecting cover (40) is equal to the width of an inner cavity of the connecting cover (40), and one side surface of the sealing element (322) at the end part of the connecting shaft (321) is in stop contact with the inner peripheral wall of the connecting cover (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230029.8A CN111174591A (en) | 2019-12-04 | 2019-12-04 | End sealing device for preheating section of continuous feeding device of electric furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230029.8A CN111174591A (en) | 2019-12-04 | 2019-12-04 | End sealing device for preheating section of continuous feeding device of electric furnace |
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| CN111174591A true CN111174591A (en) | 2020-05-19 |
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| CN201911230029.8A Pending CN111174591A (en) | 2019-12-04 | 2019-12-04 | End sealing device for preheating section of continuous feeding device of electric furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304260A (en) * | 2020-09-30 | 2021-02-02 | 首钢集团有限公司 | Method for determining length of sintering flue gas cover |
| JP7559231B2 (en) | 2020-09-29 | 2024-10-01 | ダニエリ アンド チ．オフィチーネ メカーニク エッセピア | Apparatus and method for feeding and preheating a metal charge in a melting furnace |
| KR102725784B1 (en) * | 2020-09-29 | 2024-11-04 | 다니엘리 앤드 씨. 오피시네 메카니케 쏘시에떼 퍼 아찌오니 | Device and method for supplying and preheating metal charge in a melting furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7559231B2 (en) | 2020-09-29 | 2024-10-01 | ダニエリ アンド チ．オフィチーネ メカーニク エッセピア | Apparatus and method for feeding and preheating a metal charge in a melting furnace |
| KR102725784B1 (en) * | 2020-09-29 | 2024-11-04 | 다니엘리 앤드 씨. 오피시네 메카니케 쏘시에떼 퍼 아찌오니 | Device and method for supplying and preheating metal charge in a melting furnace |
| CN112304260A (en) * | 2020-09-30 | 2021-02-02 | 首钢集团有限公司 | Method for determining length of sintering flue gas cover |
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Application publication date: 20200519 |