CN210765387U - Special steel scrap high temperature preheater of electric stove - Google Patents
Special steel scrap high temperature preheater of electric stove Download PDFInfo
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- CN210765387U CN210765387U CN201921621740.1U CN201921621740U CN210765387U CN 210765387 U CN210765387 U CN 210765387U CN 201921621740 U CN201921621740 U CN 201921621740U CN 210765387 U CN210765387 U CN 210765387U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a special steel scrap high temperature preheater of electric stove, including tunnel type furnace body and the stove bottom that is used for transporting the steel scrap, the stove bottom is located tunnel type furnace body's bottom, form the furnace chamber that is used for heating the steel scrap between tunnel type furnace body and the stove bottom, the stove bottom adopts step-by-step stove bottom or vibration stove bottom, be equipped with the regenerative burner on the tunnel type furnace body, tunnel type furnace body's one end is equipped with the steel scrap charge door, tunnel type furnace body's the other end is equipped with the electric stove charge door. The method can save 300kwh/t of electricity, shorten the steel melting time of the electric furnace, reduce the consumption of steel electrodes per ton, reduce the consumption of steel refractory materials per ton, save more than 200 yuan per ton of steel in total, and has remarkable economic benefit.
Description
Technical Field
The utility model relates to a metallurgical and waste heat recovery field specifically is a special steel scrap high temperature preheater of electric stove.
Background
If the scrap steel fed into the electric furnace is preheated to more than 1200 ℃, 300kwh/t of electricity can be saved, the steel melting time of the electric furnace is shortened, the consumption of ton steel electrodes and ton steel refractory materials is reduced, more than 200 yuan per ton steel can be saved totally, and the economic benefit is remarkable.
However, the prior electric furnace can only preheat the scrap steel below 200 ℃, and the electric steelmaking operation cost is high. The steel scrap has a complicated shape, and almost has no strength after exceeding 900 ℃, so that the steel scrap is difficult to convey. And the long low-temperature section heat accumulating type burner is difficult to ignite when heated from normal temperature to high temperature, and particularly, the fuel is low-price carbon powder. If the low-temperature section adopts a conventional burner, the heat efficiency is low, and the energy conservation is greatly reduced.
Disclosure of Invention
An object of the utility model is to provide a special steel scrap high temperature preheater of electric stove, it can be energy-conserving the decrement, shortens electric steelmaking time, and economic benefits is showing.
The utility model discloses a realize like this: the utility model discloses a special steel scrap high temperature preheater of electric stove, including tunnel type furnace body and the stove bottom that is used for transporting the steel scrap, the stove bottom is located tunnel type furnace body's bottom, form the furnace chamber that is used for heating the steel scrap between tunnel type furnace body and the stove bottom, the stove bottom adopts step-by-step stove bottom or vibration stove bottom, be equipped with the regenerative burner on the tunnel type furnace body, tunnel type furnace body's one end is equipped with the steel scrap charge door, tunnel type furnace body's the other end is equipped with the electric stove charge door.
Furthermore, when the vibrating furnace bottom is adopted, the temperature of the bottom scrap steel is less than or equal to 850 ℃, and the temperature of the middle upper scrap steel can be higher. The vibrating furnace bottom has the defects of large heat dissipation loss, large power consumption and large furnace bottom abrasion; the advantage is that it can transport all powder scrap steel (such as iron scrap cut from cast iron). The stepping furnace bottom can not convey full-powder scrap iron. The content of powdered scrap iron in the scrap steel is less than or equal to 15 percent. The powdered scrap iron is carried away by the scrap steel (like sweeping). The stepping furnace bottom can not convey powder with the grain diameter less than or equal to 5mm, and the powder is easy to fall into a sand seal groove to cause sand seal hardening.
Further, the stepping furnace bottom comprises a fixed rail, a moving beam, a fixed beam, a moving beam driving device for driving the moving beam to translate and a moving rail driving device for driving the moving rail to translate, wherein a moving supporting plate is fixed at the upper end of the moving beam, a moving beam supporting wheel is fixed at the lower end of the moving beam, the moving beam is supported on the moving rail through the moving beam supporting wheel at the lower end, a slope for enabling the moving beam supporting wheel to move up and down is arranged on the moving rail, and the moving beam is connected with the moving beam driving device and is driven by the moving beam driving device to move along the moving rail to move up and down and horizontally; the movable rail is arranged on the fixed rail and is in sliding fit with the fixed rail, the fixed rail is fixed on the basis and extends along the length direction of the tunnel type furnace body, the movable rail is connected with the movable rail driving device to enable the movable rail to move along the fixed rail under the driving of the movable rail driving device, a fixed supporting plate is fixed at the upper end of the fixed beam, the lower end of the fixed beam is supported on the basis through a fixed beam supporting leg, the fixed beam and the movable beam are arranged side by side along the horizontal direction, and the two ends of the fixed beam and the movable beam extend along the length direction of the tunnel type furnace body respectively.
Furthermore, the fixed beam and the movable beam are respectively provided with a flow passage for cooling liquid to pass through; one end of the flow channel of the fixed beam and one end of the flow channel of the movable beam are respectively communicated with the water inlet pipe, and the other end of the flow channel of the fixed beam and the other end of the flow channel of the movable beam are respectively communicated with the water outlet pipe.
Further, the fixed beam comprises a fixed beam water-cooling tube, a fixed beam heat-insulating layer is fixed outside the fixed beam water-cooling tube, a fixed beam castable is arranged at the upper end of the fixed beam heat-insulating layer, and fixed beam supporting legs are fixed at the lower end of the fixed beam heat-insulating layer; the movable beam comprises a movable beam water-cooling tube, a movable beam heat-insulating layer is fixed outside the movable beam water-cooling tube, a movable beam pouring material is arranged at the upper end of the movable beam heat-insulating layer, and a movable beam riding wheel is installed at the lower end of the movable beam heat-insulating layer.
Furthermore, one side or two sides of the fixed beam heat insulation layer are provided with grooves for containing sand seals, the openings of the grooves are upward, sealing plates extending downwards are fixed on the movable beam heat insulation layer, and the sealing plates are located in the grooves for containing the sand seals.
Further, the both sides of basis are equipped with the boss that is used for supporting the fixed beam respectively, and the boss extends along tunnel type furnace body length direction, fixed track, removal track set up between the boss of both sides.
Furthermore, a fixed beam is supported on the moving track.
Furthermore, the fixed beams and the movable beams are alternately arranged along the horizontal direction, and the adjacent fixed beams and the adjacent movable beams are sealed at the bottom of the furnace by adopting sand seal.
Furthermore, a movable rail riding wheel is fixed at the lower end of the movable rail, and the movable rail is supported on the fixed rail through the movable rail riding wheel at the lower end.
Furthermore, the two side walls of the tunnel-type furnace body are provided with a burner port, a main fuel spray pipe and an electronic ignition burner, the main fuel spray pipe and the electronic ignition burner are communicated with a cavity at the upper end of the burner port, the burner port is communicated with a furnace chamber in the tunnel-type furnace body through an opening, a heat accumulator is arranged in a cavity at the lower end of the burner port, the lower end of the burner port is communicated with a first pipe orifice of a three-way switching valve, a second pipe orifice of the three-way switching valve is connected with a combustion air main pipe through a pipeline, and a third pipe orifice of the three-way switching valve is connected with a smoke exhaust main pipe through a; the inner walls of the wall bodies on the two sides of the tunnel-type furnace body are provided with fire walls extending upwards and corresponding to the openings. The fire-blocking walls are arranged on bosses arranged on the inner walls of the two side walls of the tunnel-type furnace body.
Furthermore, an opening is arranged above the scrap steel charging opening, a retaining wall is arranged on the side surface, and the bottom is a stepping furnace bottom; the electric furnace charging opening is composed of an electric furnace charging opening heat-resistant steel plate, an electric furnace charging opening water-cooling pipe and an electric furnace charging opening pouring material, the electric furnace charging opening pouring material is located on the outer side of the electric furnace charging opening heat-resistant steel plate, and the electric furnace charging opening water-cooling pipe is arranged in the electric furnace charging opening pouring material.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a tunnel furnace body and step-by-step stove bottom or between form the furnace chamber that is used for heating the steel scrap, through step-by-step stove bottom transportation steel scrap, make the steel scrap heat the high temperature from the normal atmospheric temperature in the tunnel furnace body, the temperature still can transport the steel scrap after reaching about more than 900 ℃ or more than 1200 ℃. The utility model discloses can make the scrap steel of advancing electric furnace can be preheated more than 1200 ℃, can practice thrift about 300 kwh/t's electricity, shorten electric steelmaking time, reduce ton steel electrode consumption, reduce ton steel resistant material consumption, the totality can practice thrift more than about 200 yuan/ton steel, and economic benefits is showing.
And the utility model discloses a be equipped with burner nozzle, main fuel spray tube, electron ignition nozzle on the wall body of the both sides of tunnel furnace body, main fuel spray tube, electron ignition nozzle and nozzle mouth upper end cavity intercommunication, the burner nozzle passes through the opening and communicates with the furnace chamber in the tunnel furnace body, be equipped with the heat accumulator in the lower extreme cavity of burner nozzle mouth, the lower extreme of burner nozzle communicates with the first mouth of pipe of three-way switch valve, and the second mouth of pipe of three-way switch valve passes through the pipeline and links to each other with combustion-supporting air house steward, and the third mouth of pipe of three-way switch valve passes through the pipeline and links to each other with the house; the inner walls of the wall bodies on the two sides of the tunnel-type furnace body are provided with fire walls extending upwards and corresponding to the openings. The heat accumulating type burner with the structure has the advantages that ignition is simpler, the main fuel of the heat accumulating type burner can be gaseous, liquid and solid fuel, the heat efficiency is high, and the energy conservation is greatly increased.
Drawings
FIG. 1 is a longitudinal sectional view of a special scrap steel high-temperature preheating furnace system for an electric furnace according to the present invention;
FIG. 2 is a top view of the special scrap steel high-temperature preheating furnace system for electric furnaces of the present invention;
FIG. 3 is a transverse sectional view of the special scrap steel high-temperature preheating furnace system for the electric furnace of the present invention;
FIG. 4 is a longitudinal enlarged view of a part of the bottom of the high-temperature scrap preheating furnace system for electric furnaces according to the present invention;
FIG. 5 is a partial enlarged view of a regenerative burner with ignition of the special high-temperature scrap preheating furnace system for electric furnaces of the present invention;
FIG. 6 is a transverse enlarged view of a portion of the bottom of the high-temperature scrap preheating furnace system for electric furnaces according to the present invention;
FIG. 7 is a longitudinal enlarged view of the electric furnace charging hole of the special scrap steel high-temperature preheating furnace system for the electric furnace.
In the drawing, 1 is an electric furnace, 2 is an electric furnace charging port, 3 is a steel ladle, 4 is a tunnel furnace body, 5 is a fixed beam, 6 is a fixed beam supporting leg, 7 is a moving track, 8 is a moving beam riding wheel, 9 is a moving track riding wheel, 10 is a fixed track, 11 is a smoke exhaust main pipe, 12 is a combustion air main pipe, 13 is a fire wall, 14 is a waste steel charging port, 15 is a moving track driving oil cylinder, 16 is a moving beam driving oil cylinder, 17 is a heat accumulating type burner, 18 is a sand seal, 19 is a moving beam, 20 is a three-way switching valve, 21 is a pipeline, 22 is a fixed beam heat insulating layer, 23 is a base, 24 is a main fuel nozzle, 25 is an electronic ignition nozzle, 26 is a heat accumulator, 27 is a nozzle port, 28 is a fixed supporting plate, 29 is a fixed beam castable, 30 is a moving beam heat insulating layer, 31 is a moving supporting plate, 32 is a moving beam castable, 33 is an electric furnace charging port heat-, 34 is an electric furnace charging hole water-cooling tube, and 35 is electric furnace charging hole castable.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment one refers to fig. 1 to 7, the embodiment of the utility model provides a special steel scrap high temperature preheater of electric stove, the stove bottom that includes tunnel furnace body 4 and be used for transporting the steel scrap, the stove bottom is located tunnel furnace body 4's bottom, form the furnace chamber that is used for heating the steel scrap between tunnel furnace body 4 and the stove bottom, the stove bottom adopts step-by-step stove bottom, be equipped with heat accumulation formula combustor 17 on tunnel furnace body 4, tunnel furnace body 4's one end is equipped with steel scrap charge door 14, tunnel furnace body 4's the other end is equipped with electric stove charge door 2.
The walking furnace bottom comprises a fixed rail 10, a moving rail 7, a moving beam 19, a fixed beam 5, a moving beam driving device for driving the moving beam to move and a moving rail 7 driving device for driving the moving beam 7 to move, a moving supporting plate 31 is fixed at the upper end of the moving beam, a moving beam supporting wheel 8 is fixed at the lower end of the moving beam, the moving beam is supported on the moving rail 7 through the moving beam supporting wheel 8 at the lower end, a slope used for supplying the moving beam supporting wheel 8 to move up and down is arranged on the moving rail 7, the moving beam is connected with the moving beam driving device, and the moving beam moves along the moving rail 7 under the driving of the moving beam driving device to move up and down and move horizontally. The traveling beam driving means employs a traveling beam driving cylinder 16. The moving track 7 is arranged on the fixed track 10 and is in sliding fit with the fixed track 10, the fixed track 10 is fixed on the foundation 23 and extends along the length direction of the tunnel furnace body 4, and the moving track 7 is connected with a driving device of the moving track 7, so that the moving track 7 moves along the fixed track 10 under the driving of the driving device of the moving track 7. The moving rail 7 driving device adopts a moving rail driving oil cylinder 15. The upper end of fixed beam 5 is fixed with fixed layer board 28, the lower extreme of fixed beam 5 passes through fixed beam supporting leg 6 to be supported on basis 23, fixed beam 5, walking beam set up side by side along the horizontal direction, and the both ends of fixed beam 5, walking beam extend along 4 length direction in tunnel type furnace body respectively. The utility model discloses still including supporting valve, hydraulic pressure station, fan, fuel system and control system etc..
Further, a moving rail riding wheel 9 is fixed at the lower end of the moving rail 7, and the moving rail 7 is supported on a fixed rail 10 through the moving rail riding wheel 9 at the lower end.
The moving beam supporting wheels 8 are uniformly distributed below the moving beam, and the moving beam supporting wheels 8 can move on a moving track 7 with a slope under the driving of an oil cylinder and move up and down and horizontally; the moving track supporting wheels 9 are uniformly distributed below the moving track 7 with the slope, and the track supporting wheels can horizontally move on the fixed track 10 under the driving of the track oil cylinder.
Furthermore, the fixed beam 5 and the movable beam are respectively provided with a flow passage for cooling liquid to pass through; one ends of the flow passages of the fixed beam 5 and the movable beam are respectively communicated with the water inlet pipe, and the other ends of the flow passages of the fixed beam 5 and the movable beam are respectively communicated with the water outlet pipe.
Further, the fixed beam 5 comprises a fixed beam 5 water-cooled tube, a fixed beam heat-insulating layer 22 is fixed outside the fixed beam 5 water-cooled tube, a fixed beam castable 29 is arranged at the upper end of the fixed beam heat-insulating layer 22, and fixed beam supporting legs 6 are fixed at the lower end of the fixed beam heat-insulating layer 22; the walking beam comprises a walking beam water-cooling tube, a walking beam heat-insulating layer 30 is fixed outside the walking beam water-cooling tube, a walking beam castable 32 is arranged at the upper end of the walking beam heat-insulating layer 30, and a walking beam riding wheel 8 is mounted at the lower end of the walking beam heat-insulating layer 30.
Further, one side or two sides of the fixed beam heat insulation layer 22 are provided with grooves for accommodating the sand seals 18, the openings of the grooves are upward, and the movable beam heat insulation layer 30 is fixed with sealing plates extending downwards, and the sealing plates are positioned in the grooves for accommodating the sand seals 18.
Furthermore, bosses for supporting the fixed beam 5 are respectively arranged on two sides of the foundation 23, the bosses extend along the length direction of the tunnel furnace body 4, and the fixed rail 10 and the moving rail 7 are arranged between the bosses on the two sides.
Further, a fixed beam 5 is supported on the moving rail 7.
Further, the fixed beams 5 and the movable beams are alternately arranged along the horizontal direction, and the adjacent fixed beams 5 and the adjacent movable beams are sealed at the furnace bottom by adopting sand seals 18.
The regenerative burner 17 is a regenerative burner with ignition. The heat accumulating type burner with ignition comprises a heat accumulator 26, a main fuel spray pipe 24, an electronic ignition burner 25, a burner port 27 and the like; each burner is provided with a three-way switching valve 20 which is respectively connected with a combustion air main pipe 12 and a smoke exhaust main pipe 11 through pipelines 21; the burners are uniformly arranged on both sides of the furnace body. Furthermore, the two side walls of the tunnel furnace body 4 are provided with a burner port 27, a main fuel nozzle 24 and an electronic ignition nozzle 25, the main fuel nozzle 24 and the electronic ignition nozzle 25 are communicated with the upper end cavity of the burner port 27, the burner port 27 is communicated with the furnace chamber in the tunnel furnace body 4 through an opening, a heat accumulator 26 is arranged in the lower end cavity of the burner port 27, the lower end of the burner port 27 is communicated with a first pipe orifice of the three-way switching valve 20, a second pipe orifice of the three-way switching valve 20 is connected with the combustion air main pipe 12 through a pipeline 21, and a third pipe orifice of the three-way switching valve 20 is connected with the smoke exhaust main pipe 11 through the pipeline 21; the inner walls of the wall bodies at the two sides of the tunnel-type furnace body 4 are provided with fire walls 13 which extend upwards and correspond to the openings. The fire walls 13 are arranged on bosses arranged on the inner walls of the two side walls of the tunnel furnace body 4.
The combustion-supporting air main pipe 12 and the smoke exhaust main pipe 11 are arranged at the top of the tunnel type furnace body 4. The combustion air main pipe 12 and the smoke exhaust main pipe 11 are arranged up and down.
Furthermore, an opening is arranged above the scrap steel charging port 14, a retaining wall is arranged on the side surface, and the bottom is a stepping furnace bottom; the electric furnace charging port 2 is composed of an electric furnace charging port heat-resistant steel plate 33, an electric furnace charging port water-cooling pipe 34 and an electric furnace charging port castable 35, the electric furnace charging port castable 35 is positioned outside the inner lining of the electric furnace charging port heat-resistant steel plate 33, and the electric furnace charging port water-cooling pipe 34 is arranged in the electric furnace charging port castable 35. The electric furnace charging hole 2 department is provided with electric furnace 1, steel ladle 3, the utility model discloses an electric furnace charging hole 2 downward sloping of tunnel type furnace body 4 corresponds with the feed inlet of electric furnace.
The utility model discloses a theory of operation: the scrap steel is placed in a scrap steel charging port 14 through an electromagnetic crane, is gradually pushed into the furnace through a stepping furnace bottom, and is finally added into the electric furnace through an electric furnace charging port 2. The main fuel of the regenerative burner can be gaseous, liquid or solid fuel. The ignition burner preferably uses gaseous fuel (such as natural gas, liquefied petroleum gas, coal gas, etc.). The furnace temperature is automatically controlled by the temperature measuring device and the size of the adjusting fuel. The atmosphere and pressure in the furnace are automatically controlled by adjusting the smoke discharge amount and the combustion-supporting air amount.
The working principle of the stepping furnace bottom is as follows: the moving beam moves up-hill on the moving track 7 with slope under the driving of the moving beam driving oil cylinder 16, drives the moving support plate 31 and the scrap steel to lift, leaves the fixed support plate 28 and moves forward, and after the moving beam is in place, the moving track 7 moves forward under the driving of the moving track driving oil cylinder 15; the movable beam moves downhill, the movable supporting plate 31 descends, and the scrap steel is supported by the fixed supporting plate 28; the moving rail 7 and the moving beam move backwards together under the driving of the oil cylinder, and reset to complete a moving cycle.
The second embodiment of the embodiment discloses a special steel scrap high temperature preheater of electric stove, including tunnel furnace body 4 and the stove bottom that is used for transporting the steel scrap, the stove bottom is located tunnel furnace body 4's bottom, form the furnace chamber that is used for heating the steel scrap between tunnel furnace body 4 and the stove bottom, the stove bottom adopts the vibration stove bottom, be equipped with regenerative burner 17 on tunnel furnace body 4, tunnel furnace body 4's one end is equipped with steel scrap charge door 14, tunnel furnace body 4's the other end is equipped with electric stove charge door 2. When the vibrating furnace bottom is adopted, the total preheating temperature cannot exceed 850 ℃, and the heat dissipation loss of the furnace bottom is large.
Furthermore, the vibrating furnace bottom adopts the existing vibrating furnace bottom. Other technical features of the present embodiment are the same as those of the first embodiment.
The utility model provides a feasible, economic, the special steel scrap high temperature preheater of efficient electric stove solves two above key problems.
The embodiments of the present invention are illustrated and described in detail, and the present disclosure is not limited to the foregoing embodiments, and the furnace bottom is not limited to the stepping furnace bottom or the vibrating furnace bottom, and other furnace bottoms capable of transporting scrap steel can be adopted, and it is obvious that the present invention can be modified and changed by referring to the above-mentioned techniques. Accordingly, other persons skilled in the art can utilize the invention and embodiments with various modifications to adapt it to other uses as intended. I.e., the scope defined by the claims appended hereto and their equivalents.
Claims (10)
1. The special high-temperature preheating furnace for the waste steel of the electric furnace is characterized by comprising a tunnel-type furnace body and a furnace bottom for transporting the waste steel, wherein the furnace bottom is positioned at the bottom of the tunnel-type furnace body, a furnace chamber for heating the waste steel is formed between the tunnel-type furnace body and the furnace bottom, the furnace bottom adopts a stepping furnace bottom or a vibrating furnace bottom, a heat accumulating type burner is arranged on the tunnel-type furnace body, a waste steel charging opening is formed in one end of the tunnel-type furnace body, and an electric furnace charging opening is formed in the other end of the tunnel-type furnace body.
2. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 1, which is characterized in that: the walking furnace bottom comprises a fixed rail, a moving beam, a fixed beam, a moving beam driving device for driving the moving beam to move horizontally and a moving rail driving device for driving the moving rail to move horizontally, wherein a moving supporting plate is fixed at the upper end of the moving beam, a moving beam riding wheel is fixed at the lower end of the moving beam, the moving beam is supported on the moving rail through the moving beam riding wheel at the lower end, a slope for the moving beam riding wheel to move up and down is arranged on the moving rail, and the moving beam is connected with the moving beam driving device and is driven by the moving beam driving device to move along the moving rail to move up and down and horizontally; the movable rail is arranged on the fixed rail and is in sliding fit with the fixed rail, the fixed rail is fixed on the basis and extends along the length direction of the tunnel type furnace body, the movable rail is connected with the movable rail driving device to enable the movable rail to move along the fixed rail under the driving of the movable rail driving device, a fixed supporting plate is fixed at the upper end of the fixed beam, the lower end of the fixed beam is supported on the basis through a fixed beam supporting leg, the fixed beam and the movable beam are arranged side by side along the horizontal direction, and the two ends of the fixed beam and the movable beam extend along the length direction of the tunnel type furnace body respectively.
3. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 2, characterized in that: the fixed beam and the movable beam are respectively provided with a flow passage for cooling liquid to pass through; one end of the flow channel of the fixed beam and one end of the flow channel of the movable beam are respectively communicated with the water inlet pipe, and the other end of the flow channel of the fixed beam and the other end of the flow channel of the movable beam are respectively communicated with the water outlet pipe.
4. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 3, characterized in that: the fixed beam comprises a fixed beam water-cooling tube, a fixed beam thermal insulation layer is fixed outside the fixed beam water-cooling tube, a fixed beam castable is arranged at the upper end of the fixed beam thermal insulation layer, and fixed beam supporting legs are fixed at the lower end of the fixed beam thermal insulation layer; the movable beam comprises a movable beam water-cooling tube, a movable beam heat-insulating layer is fixed outside the movable beam water-cooling tube, a movable beam pouring material is arranged at the upper end of the movable beam heat-insulating layer, and a movable beam riding wheel is installed at the lower end of the movable beam heat-insulating layer.
5. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 4, characterized in that: one side or both sides of fixed beam insulating layer are equipped with the recess that is used for holding the sand seal, and this recess opening is upwards, be fixed with downwardly extending's closing plate on the walking beam insulating layer, the closing plate is located the recess that is used for holding the sand seal.
6. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 2, characterized in that: the both sides of basis are equipped with the boss that is used for supporting the fixed beam respectively, and the boss extends along tunnel type furnace body length direction, fixed track, removal track set up between the boss of both sides.
7. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 2 or 6, which is characterized in that: a fixed beam is also supported on the movable track; the fixed beams and the movable beams are alternately arranged along the horizontal direction, and the adjacent fixed beams and the adjacent movable beams are sealed at the bottom of the furnace by adopting sand seals.
8. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 2, characterized in that: the lower end of the movable track is fixed with a movable track supporting wheel, and the movable track is supported on the fixed track through the movable track supporting wheel at the lower end.
9. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 2, characterized in that: the tunnel type furnace body is characterized in that two side walls of the tunnel type furnace body are provided with a burner nozzle opening, a main fuel spray pipe and an electronic ignition burner, the main fuel spray pipe and the electronic ignition burner are communicated with a cavity at the upper end of the burner nozzle opening, the burner nozzle opening is communicated with a furnace chamber in the tunnel type furnace body through an opening, a heat accumulator is arranged in a cavity at the lower end of the burner nozzle opening, the lower end of the burner nozzle opening is communicated with a first pipe opening of a three-way switching valve, a second pipe opening of the three-way switching valve is connected with a combustion air main pipe through a pipeline, and a third pipe opening of the three-; the inner walls of the wall bodies on the two sides of the tunnel-type furnace body are provided with fire walls extending upwards and corresponding to the openings.
10. The high-temperature preheating furnace for the scrap steel special for the electric furnace according to claim 2, characterized in that: an opening is arranged above the scrap steel charging opening, a retaining wall is arranged on the side surface, and the bottom is a stepping furnace bottom; the electric furnace charging opening is composed of an electric furnace charging opening heat-resistant steel plate, an electric furnace charging opening water-cooling pipe and an electric furnace charging opening pouring material, the electric furnace charging opening pouring material is located on the outer side of the electric furnace charging opening heat-resistant steel plate, and the electric furnace charging opening water-cooling pipe is arranged in the electric furnace charging opening pouring material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921621740.1U CN210765387U (en) | 2019-09-26 | 2019-09-26 | Special steel scrap high temperature preheater of electric stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921621740.1U CN210765387U (en) | 2019-09-26 | 2019-09-26 | Special steel scrap high temperature preheater of electric stove |
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| CN210765387U true CN210765387U (en) | 2020-06-16 |
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| CN201921621740.1U Active CN210765387U (en) | 2019-09-26 | 2019-09-26 | Special steel scrap high temperature preheater of electric stove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541059A (en) * | 2019-09-26 | 2019-12-06 | 武汉富瑞能源科技有限公司 | Special steel scrap high temperature preheater of electric stove |
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2019
- 2019-09-26 CN CN201921621740.1U patent/CN210765387U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541059A (en) * | 2019-09-26 | 2019-12-06 | 武汉富瑞能源科技有限公司 | Special steel scrap high temperature preheater of electric stove |
| CN110541059B (en) * | 2019-09-26 | 2024-01-02 | 武汉富瑞能源科技有限公司 | Special scrap steel high-temperature preheating furnace for electric furnace |
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