A slagging device for a back inclined electric furnace

Abstract

The utility model discloses a kind of rear-inclined electric furnace's slagging-off devices, it is related to the technical field of metallurgical equipment, including base, supporting mechanism and slagging-off mechanism, supporting mechanism includes rotary table and guide frame, the bottom of rotary table is rotatively matched with the top of base and is connected, guide frame is hinged with the top of rotary table, slagging-off mechanism includes slagging-off arm, rotating plate, heat insulating plate, slagging-off plate and vibration source, slagging-off arm is slidably matched with guide frame and is connected, rotating plate is hinged with one end of slagging-off arm, heat insulating plate is fixedly connected with rotating plate, slagging-off plate is fixedly connected with heat insulating plate, vibration source is fixedly connected with heat insulating plate.Combination of vibration source and slagging-off plate, through high-frequency vibration destroys slag structure, reduces slagging-off resistance, can reduce slagging-off thrust, make slag drop more thoroughly, avoid slag residue;Meanwhile, the position adjustment of supporting mechanism can let slagging-off plate cover all slag layer area in electric furnace, there is no cleaning blind area, substantially improve furnace slag cleaning efficiency, shorten electric furnace smelting auxiliary time.

Description

Technical Field

[0001] This utility model relates to the technical field of metallurgical equipment, specifically to a slag removal device for a backward tilting electric furnace. Background Technology

[0002] In the electric arc furnace smelting process in the metallurgical industry, the metallurgical raw materials contain a large amount of refractory materials and oxides, which cannot be melted in the molten iron during the smelting process. At the same time, the metal oxides generated during the smelting process remain in the molten iron and accumulate in large quantities to form slag. When the slag is smelted in the medium frequency induction furnace, most of it will float to the surface of the molten iron and accumulate. If it is not treated in time, if too much slag remains, it will not only affect the purity of the molten iron and the smelting quality, but may also block the tapping hole and aggravate the erosion of the furnace wall. Therefore, slag cleaning is a key auxiliary process in electric arc furnace smelting.

[0003] Existing simple mechanical slag removal equipment relies solely on the mechanical thrust of the slag removal plate to scrape off slag. This requires overcoming the internal cohesive force of slag agglomeration and the adhesion between the slag and the furnace bottom. The slag removal resistance is high, which not only consumes more power but also easily leads to incomplete slag crushing, leaving fine slag particles in the gaps at the furnace bottom.

[0004] Meanwhile, some equipment has limited position adjustment functions, or can only extend and retract the robotic arm without adjusting the horizontal rotation angle, or can only flip up and down without accurately controlling the depth of the slag removal plate into the furnace. This makes it difficult to cover the slag layer in the corners of the electric furnace and the sides of the furnace opening, creating blind spots for cleaning. This requires secondary scraping, prolongs the smelting auxiliary time, and reduces the overall production efficiency. Utility Model Content

[0005] This utility model provides a slag removal device for a backward tilting electric furnace, which can solve the problem in the prior art that relies solely on the mechanical thrust of the slag removal plate to scrape off slag. This requires overcoming the internal cohesive force of slag agglomeration and the adhesion force between slag and furnace bottom, resulting in high slag removal resistance, which not only consumes more power but also easily leads to incomplete slag crushing and the retention of fine slag particles in the gaps at the furnace bottom.

[0006] A slag removal device for a backward-tilting electric furnace includes a base, a support mechanism, and a slag removal mechanism. The support mechanism includes a turntable and a guide frame. The bottom of the turntable is rotatably connected to the top of the base, and the guide frame is hinged to the top of the turntable. The slag removal mechanism includes a slag removal arm, a rotating plate, a heat insulation plate, a slag removal plate, and a vibration source for generating vibration. The slag removal arm is slidably connected to the guide frame. The rotating plate is hinged to one end of the slag removal arm. The heat insulation plate is fixedly connected to the rotating plate. The slag removal plate is fixedly connected to the heat insulation plate. The vibration source is fixedly connected to the heat insulation plate.

[0007] According to one embodiment of this utility model, the slag removal mechanism further includes a connecting cylinder, a fastening bolt, and a fastening nut. The connecting cylinder is disposed between the heat insulation plate and the rotating plate. One end of the connecting cylinder abuts against the heat insulation plate, and the other end of the connecting cylinder abuts against the rotating plate. One end of the fastening bolt passes through the heat insulation plate, the connecting cylinder, and the rotating plate in sequence. The fastening nut is threadedly engaged with the fastening bolt. The connecting cylinder is made of a high-temperature resistant elastic material.

[0008] According to one embodiment of the present invention, the slag removal mechanism further includes a heat insulation cover, which is fixedly connected to a heat insulation plate and is placed on the outside of the vibration source.

[0009] According to one embodiment of the present invention, the slag-removing mechanism further includes a first telescopic rod, the telescopic end of the first telescopic rod being hinged to the rotating plate, and the other end of the first telescopic rod being hinged to the slag-removing arm. The first telescopic rod is a hydraulic push rod.

[0010] According to one embodiment of the present invention, the support mechanism further includes a second telescopic rod and a hinge seat. The second telescopic rod is fixedly connected to the turntable, the top of the hinge seat is slidably connected to the guide frame, and the telescopic end of the second telescopic rod is hinged to the bottom of the hinge seat.

[0011] According to one embodiment of the present invention, the support mechanism further includes a gear and a rack. The gear is rotatably disposed at the end of the guide frame away from the electric furnace, and the rack is fixedly connected to the slag-removing arm, with the rack meshing with the gear. The support mechanism also includes a motor, which is fixedly connected to the guide frame, and the output end of the motor is coaxially fixedly connected to the gear.

[0012] According to one embodiment of the present invention, the slag removal mechanism further includes a slag collection frame, which is placed on the side of the electric furnace near the base and directly below the slag removal arm.

[0013] According to one embodiment of the present invention, the vibration source is an attached plate vibrator.

[0014] The advantages of this utility model compared to the prior art are: By combining the vibration source with the slag removal plate, the slag structure is destroyed by high-frequency vibration, reducing the slag removal resistance. Compared with the traditional non-vibration slag removal method, it can reduce the slag removal thrust and remove the slag more thoroughly, avoiding the residue of fine slag. At the same time, the position adjustment of the support mechanism can allow the slag removal plate to cover all slag layer areas in the electric furnace, with no blind spots in cleaning, greatly improving the slag cleaning efficiency and shortening the auxiliary time of electric furnace smelting.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a three-dimensional structural diagram of a slag removal device for a backward-tilting electric furnace.

[0017] Figure 2 This is a three-dimensional structural diagram of the slag removal mechanism in this utility model.

[0018] Figure 3 This is a partial structural cross-sectional view of the support mechanism in this utility model.

[0019] Figure 4 This is a partial structural schematic diagram of the slag removal mechanism in this utility model.

[0020] The reference numerals in the figures include: 1. Base; 2. Support mechanism; 3. Slag removal mechanism; 4. Turntable; 5. Guide frame; 6. Slag removal arm; 7. Rotating plate; 8. Heat insulation plate; 9. Slag removal plate; 10. Vibration source; 11. Connecting cylinder; 12. Heat insulation cover; 13. First telescopic rod; 14. Second telescopic rod; 15. Hinge seat; 16. Gear; 17. Rack; 18. Motor; 19. Slag collection frame. Detailed Implementation

[0021] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0022] like Figures 1 to 4 As shown, a slag removal device for a backward-tilting electric furnace includes a base 1, a support mechanism 2, and a slag removal mechanism 3. The support mechanism 2 includes a turntable 4 and a guide frame 5. The bottom of the turntable 4 is rotatably connected to the top of the base 1, and the guide frame 5 is hinged to the top of the turntable 4. The slag removal mechanism 3 includes a slag removal arm 6, a rotating plate 7, a heat insulation plate 8, a slag removal plate 9, and a vibration source 10 for generating vibration. The slag removal arm 6 is slidably connected to the guide frame 5. The rotating plate 7 is hinged to one end of the slag removal arm 6. The heat insulation plate 8 is fixedly connected to the rotating plate 7. The slag removal plate 9 is fixedly connected to the heat insulation plate 8. The vibration source 10 is fixedly connected to the heat insulation plate 8.

[0023] The bottom of the turntable 4 and the top of the base 1 rotate 360° around the vertical axis, driving the guide frame 5 and the slag-scraping mechanism 3 to adjust their horizontal positions as a whole, ensuring that the slag-scraping plate 9 can cover the slag in different areas of the electric furnace. At the same time, the guide frame 5 is hinged to the top of the turntable 4, and can be flipped up and down around the hinge point to adjust the tilt angle of the guide frame 5, thereby changing the height of the slag-scraping arm 6. The slag-scraping arm 6 is slidably engaged with the guide frame 5, and can extend and retract along the length of the guide frame 5, further adjusting the distance the slag-scraping plate 9 extends into the electric furnace. Through the three-stage adjustment of the turntable 4 rotation, the guide frame 5 flipping, and the slag-scraping arm 6 extension and retraction, the slag-scraping plate 9 can be precisely delivered to any slag layer position in the furnace, adapting to different furnace types and slag layer distributions.

[0024] The rotating plate 7, hinged to one end of the slag-scraping arm 6, can rotate at a small angle around the hinge point, causing the heat insulation plate 8 and the slag-scraping plate 9, which are fixed thereto, to adjust their contact angle with the slag layer, allowing the slag-scraping plate 9 to adhere to the furnace bottom or the surface of the slag layer. The vibration source 10 is fixedly connected to the heat insulation plate 8 and generates high-frequency vibration after startup. The vibration is transmitted to the slag-scraping plate 9 through the heat insulation plate 8, causing the slag-scraping plate 9 to vibrate when in contact with the slag, thus breaking down the slag agglomeration structure, weakening the adhesion between the slag and the furnace bottom, and making the slag easier to detach. At the same time, it can also reduce the resistance when the slag-scraping plate 9 pushes the slag, preventing slag accumulation. The heat insulation plate 8 is fixed between the rotating plate 7 and the slag-scraping plate 9, which can block the heat transfer of the slag-scraping plate 9 when in contact with the high-temperature slag, preventing the high temperature from being conducted to the rotating plate 7, the slag-scraping arm 6, and other components, and preventing the components from deforming or failing due to high temperature. During equipment operation, the slag removal plate 9 is first adjusted to the target slag layer position via the support mechanism 2, and the contact angle of the slag removal plate 9 is finely adjusted by the rotating plate 7. Then, the vibration source 10 is started, and the slag removal plate 9 is pushed slowly along the furnace bottom by the slag removal arm 6 under vibration, scraping the loose slag to the designated area (such as the slag outlet or collection device). If the working area needs to be adjusted during the slag removal process, it can be adjusted in real time by rotating the turntable 4 or extending and retracting the slag removal arm 6 without stopping the machine, ensuring continuous slag removal operation and reducing the time spent on slag cleaning.

[0025] By combining the vibration source 10 with the slag removal plate 9, the slag structure is destroyed by high-frequency vibration, reducing the slag removal resistance. Compared with the traditional non-vibration slag removal method, it can reduce the slag removal thrust and remove the slag more thoroughly, avoiding the residue of fine slag. At the same time, the position adjustment of the support mechanism 2 can allow the slag removal plate 9 to cover all slag layer areas in the electric furnace, with no blind spots in cleaning, greatly improving the slag cleaning efficiency and shortening the auxiliary time of electric furnace smelting.

[0026] According to one embodiment of this utility model, the slag removal mechanism 3 further includes a connecting cylinder 11, a fastening bolt, and a fastening nut. The connecting cylinder 11 is disposed between the heat insulation plate 8 and the rotating plate 7. One end of the connecting cylinder 11 abuts against the heat insulation plate 8, and the other end of the connecting cylinder 11 abuts against the rotating plate 7. One end of the fastening bolt passes through the rotating plate 7, the connecting cylinder 11, and the heat insulation plate 8 in sequence. The fastening nut is threadedly engaged with the fastening bolt. The connecting cylinder 11 is made of a high-temperature resistant elastic material, such as silicone rubber, polyimide, phenyl silicone rubber, and borosilicate rubber.

[0027] During equipment operation, the connecting cylinder 11 serves as a buffer and elastic support. Made of high-temperature resistant elastic material, the connecting cylinder 11 can withstand high-temperature environments and, utilizing its elastic properties, reduces the hard collision between the heat insulation plate 8 and the rotating plate 7 when the slag removal plate 9 is subjected to force or vibration, thus lowering the risk of component damage and extending the equipment's service life. Furthermore, this connection method is simple in structure, easy to install and disassemble, and facilitates equipment maintenance and repair.

[0028] According to one embodiment of this utility model, the slag removal mechanism 3 further includes a heat insulation cover 12, which is fixedly connected to the heat insulation plate 8 and covers the outside of the vibration source 10. During equipment operation, the heat insulation cover 12 forms a relatively enclosed space, isolating the vibration source 10 from the external environment. This effectively prevents the heat generated by the vibration source 10 from being transferred to surrounding components, avoiding the impact of high temperatures on other components and ensuring the overall stability and reliability of the equipment. Simultaneously, the heat insulation cover 12 also provides a certain degree of protection, preventing external debris from entering the area of ​​the vibration source 10, interfering with the normal operation of the vibration source 10, and reducing the probability of malfunctions.

[0029] According to one embodiment of this utility model, the slag-removing mechanism 3 further includes a first telescopic rod 13. The telescopic end of the first telescopic rod 13 is hinged to the rotating plate 7, and the other end of the first telescopic rod 13 is hinged to the slag-removing arm 6. The first telescopic rod 13 is a hydraulic push rod. By controlling the hydraulic system, the first telescopic rod 13 is extended and retracted, thereby driving the rotating plate 7 to rotate around the hinge point, and thus adjusting the contact angle between the heat insulation plate 8 and the slag-removing plate 9 fixed to the rotating plate 7. The rotation angle of the rotating plate 7 is precisely controlled by the hydraulic push rod, so that the slag-removing plate 9 can better fit the slag layer surface, improving the slag-removing effect. The hydraulic push rod has the characteristics of large thrust, smooth movement, and high control precision. It can accurately adjust the angle of the slag-removing plate 9 according to actual needs, adapting to slag of different shapes and states, and enhancing the adaptability and flexibility of the equipment.

[0030] According to one embodiment of this utility model, the support mechanism 2 further includes a second telescopic rod 14 and a hinge seat 15. The second telescopic rod 14 is fixedly connected to the turntable 4, and the top of the hinge seat 15 is slidably connected to the guide frame 5. The telescopic end of the second telescopic rod 14 is hinged to the bottom of the hinge seat 15. When the second telescopic rod 14 extends or retracts, it drives the hinge seat 15 to move up and down. Due to the slidable connection between the hinge seat 15 and the guide frame 5, the guide frame 5 is driven to rotate up and down around the hinge point of the turntable 4, adjusting the tilt angle of the guide frame 5. By controlling the rotation angle of the guide frame 5 through the extension and retraction of the second telescopic rod 14, the height of the slag removal arm 6 is changed, thereby adjusting the vertical position of the slag removal plate 9. This structure is simple to operate, flexible to adjust, and can quickly adapt to different heights of electric furnaces and slag layer positions, improving the equipment's adaptability to different working conditions and ensuring the smooth progress of slag removal operations.

[0031] According to one embodiment of the present invention, the support mechanism 2 further includes a gear 16 and a rack 17. The gear 16 is rotatably disposed at the end of the guide frame 5 away from the electric furnace, and the rack 17 is fixedly connected to the slag-removing arm 6, and the rack 17 meshes with the gear 16. The support mechanism 2 also includes a motor 18, which is fixedly connected to the guide frame 5, and the output end of the motor 18 is coaxially fixedly connected to the gear 16.

[0032] After starting the motor 18, the motor 18 drives the gear 16 to rotate. The gear 16, through meshing with the rack 17, causes the rack 17 to move along the length of the guide frame 5, thereby driving the slag-removing arm 6 to extend and retract. The gear 16 and rack 17 transmission method enables precise control of the extension and retraction of the slag-removing arm 6. The motor 18 drives the gear 16 to rotate, resulting in smooth transmission, high precision, and accurate delivery of the slag-removing plate 9 to the designated position inside the electric furnace.

[0033] According to one embodiment of this utility model, the slag removal mechanism 3 further includes a slag collection frame 19, which is placed on the side of the electric furnace near the base 1 and directly below the slag removal arm 6. During the slag removal process, the slag removal plate 9 scrapes and pushes the slag to the location of the slag collection frame 19, where the slag falls into the frame. The slag collection frame 19 facilitates the centralized collection and processing of the removed slag, preventing slag from scattering around the equipment and maintaining a clean working environment. Simultaneously, centralized slag collection is beneficial for subsequent transportation and processing, improving the efficiency of slag processing and reducing the time and labor costs of cleaning.

[0034] According to one embodiment of this utility model, the vibration source 10 is an attached plate vibrator. The attached plate vibrator is fixed to the heat insulation plate 8 and generates high-frequency vibration upon startup. This vibration is transmitted to the slag-scraping plate 9 through the heat insulation plate 8. When the slag-scraping plate 9 contacts the slag, the high-frequency vibration acts on the slag, disrupting its agglomerated structure. The high-frequency vibration effectively weakens the adhesion between the slag and the furnace bottom, making the slag easier to detach, reducing the resistance when the slag-scraping plate 9 pushes the slag, and preventing slag accumulation. Compared to traditional vibration-free slag-scraping methods, this reduces the slag-scraping thrust, allows for more thorough slag removal, avoids fine slag residue, improves slag cleaning efficiency, shortens electric arc furnace smelting auxiliary time, and enhances overall production efficiency.

[0035] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A slag skimming device for a backward-tilting electric furnace, characterized in that, The system includes a base (1), a support mechanism (2), and a slag-removing mechanism (3). The support mechanism (2) includes a turntable (4) and a guide frame (5). The bottom of the turntable (4) is rotatably connected to the top of the base (1). The guide frame (5) is hinged to the top of the turntable (4). The slag-removing mechanism (3) includes a slag-removing arm (6), a rotating plate (7), a heat insulation plate (8), a slag-removing plate (9), and a vibration source (10) for generating vibration. The slag-removing arm (6) is slidably connected to the guide frame (5). The rotating plate (7) is hinged to one end of the slag-removing arm (6). The heat insulation plate (8) is fixedly connected to the rotating plate (7). The slag-removing plate (9) is fixedly connected to the heat insulation plate (8). The vibration source (10) is fixedly connected to the heat insulation plate (8).

2. The slag removal device for a backward-tilting electric furnace as described in claim 1, characterized in that, The slag removal mechanism (3) also includes a connecting cylinder (11), a fastening bolt, and a fastening nut. The connecting cylinder (11) is located between the heat insulation plate (8) and the rotating plate (7). One end of the connecting cylinder (11) abuts against the heat insulation plate (8), and the other end of the connecting cylinder (11) abuts against the rotating plate (7). One end of the fastening bolt passes through the rotating plate (7), the connecting cylinder (11), and the heat insulation plate (8) in sequence. The fastening nut is threadedly connected to the fastening bolt.

3. The slag removal device for a backward-tilting electric furnace as described in claim 2, characterized in that, The connecting cylinder (11) is made of a high-temperature resistant elastic material.

4. The slag removal device for a backward-tilting electric furnace as described in claim 1, characterized in that, The slag removal mechanism (3) also includes a heat insulation cover (12), which is fixedly connected to the heat insulation plate (8) and is placed on the outside of the vibration source (10).

5. The slag removal device for a backward-tilting electric furnace as described in claim 1, characterized in that, The slag removal mechanism (3) also includes a first telescopic rod (13), the telescopic end of the first telescopic rod (13) is hinged to the rotating plate (7), and the other end of the first telescopic rod (13) is hinged to the slag removal arm (6). The first telescopic rod (13) is a hydraulic push rod.

6. The slag removal device for a backward-tilting electric furnace as described in claim 1, characterized in that, The support mechanism (2) further includes a second telescopic rod (14) and a hinge seat (15). The second telescopic rod (14) is fixedly connected to the turntable (4). The top of the hinge seat (15) is slidably connected to the guide frame (5). The telescopic end of the second telescopic rod (14) is hinged to the bottom of the hinge seat (15).

7. The slag removal device for a backward-tilting electric furnace as described in claim 1, characterized in that, The support mechanism (2) also includes a gear (16) and a rack (17). The gear (16) is rotatably mounted at one end of the guide frame (5) away from the electric furnace. The rack (17) is fixedly connected to the slag removal arm (6) and meshes with the gear (16).

8. The slag removal device for a backward-tilting electric furnace as described in claim 7, characterized in that, The support mechanism (2) also includes a motor (18), which is fixedly connected to the guide frame (5), and the output end of the motor (18) is fixedly connected to the gear (16) on the same axis.

9. The slag removal device for a backward-tilting electric furnace as described in claim 1, characterized in that, The slag removal mechanism (3) also includes a slag collection frame (19), which is placed on the side of the electric furnace near the base (1) and directly below the slag removal arm (6).

10. The slag removal device for a backward-tilting electric furnace as described in claim 1, characterized in that, The vibration source (10) is an attached plate vibrator.

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