Protection device for slag outlet of submerged arc furnace

Abstract

The utility model relates to the technical field of submerged arc furnace protection, in particular to a submerged arc furnace slag outlet protection device which comprises a mounting plate. The protective cylinder is mounted on the mounting plate, the movable plate is mounted at the outer end of the mounting plate, a lifting groove is formed in the end, away from the protective cylinder, of the movable plate, a lifting block is slidably connected into the lifting groove, a protective plate is connected to the end, away from the lifting groove, of the lifting block, and a handle is connected to the end, away from the lifting block, of the protective plate; a sliding rod is slidably connected into the protection plate, a handle is connected to the end, away from the protection plate, of the sliding rod, a clamping ring is connected to the end, away from the handle, of the protection plate, a limiting ring is connected into the clamping ring, and a movable groove is formed in the lower side in the protection plate. Through linkage of multiple components, efficient slag removal and personnel protection are synchronously carried out, the risk caused by high-temperature approaching operation is avoided, high-temperature splashing can be dynamically blocked in the cleaning process, and the operation safety and efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of protection technology for submerged arc furnaces, and in particular to a protective device for the slag outlet of a submerged arc furnace. Background Technology

[0002] The slag outlet protection device for electric arc furnaces is a structural device specifically designed to provide heat insulation, splash prevention, and safety protection for operators and equipment during the cleaning of the slag outlet of an electric arc furnace. This device is mainly used to temporarily or permanently install around the slag outlet during high-temperature slag discharge operations in electric arc furnaces, and plays multiple protective roles such as shielding against high-temperature molten slag splashes, isolating heat radiation, guiding the direction of slag discharge, and preventing accidental contact or mechanical damage.

[0003] When using an external cleaning rod to unclog the slag outlet, operators need to work close to the high-temperature slag outlet, exposing themselves to the risk of high-temperature radiation and splashes, which poses a risk of burns and safety accidents. The operation is unsafe and may also ignite nearby combustibles or damage the surface of the equipment, posing a significant safety hazard.

[0004] Therefore, in response to the problem that during the slag discharge process, some high-temperature flames spray horizontally along the edge of the slag outlet instead of vertically downwards, causing flame overflow, which can easily lead to burns to operators, ignition of surrounding combustibles, or damage to equipment, posing a significant safety hazard, there is an urgent need to design a new type of slag outlet protection device for electric arc furnaces. Utility Model Content

[0005] In order to overcome the problem that during the slag discharge process, some high-temperature flames spray horizontally along the edge of the slag discharge port instead of vertically downwards, causing flame overflow, which can easily cause burns to operators, ignite surrounding combustibles, or damage equipment, posing a significant safety hazard.

[0006] The technical solution of this utility model is as follows: a protective device for the slag outlet of a submerged arc furnace, including an installation plate; it also includes a protective cylinder installed on the installation plate and a movable plate installed on the outer end of the installation plate. A lifting groove is opened at the end of the movable plate away from the protective cylinder. A lifting block is slidably connected inside the lifting groove. A protective plate is connected at the end of the lifting block away from the lifting groove. A handle is connected at the end of the protective plate away from the lifting block. A sliding rod is slidably connected inside the protective plate. A grip is connected at the end of the sliding rod away from the protective plate. A retaining ring is connected at the end of the protective plate away from the grip. A limiting ring is connected inside the retaining ring. A movable groove is opened on the lower inner side of the protective plate. The limiting ring is used to support the external cleaning rod. The grip drives the sliding rod to slide and drive the retaining ring to move. The handle drives the protective plate to slide on the lifting groove through the lifting block.

[0007] Preferably, by setting a movable plate, the cleaning rod is first erected vertically on the limiting ring. The retaining ring is used to limit the position of the cleaning rod. Grasp the handle, pull it up quickly and then back to its original position, and pull it outward to bring the retaining ring close to the protective plate to prevent the retaining ring from affecting the slag discharge trajectory. The handle drives the sliding rod to drive the retaining ring to move up quickly, thereby launching the cleaning rod into the slag discharge port to impact stubborn residues, causing the residues to fall through the protective cylinder. The movable plate and the protective plate can effectively protect the staff from being burned. If continuous cleaning of the slag discharge port is required, the L-shaped cleaning rod can be matched with the movable groove so that the reciprocating motion of the cleaning rod can drive the reciprocating motion of the protective plate, thereby protecting the staff.

[0008] Preferably, the outer end of the protective cylinder is provided with an annular groove, and a sliding block is slidably connected inside the annular groove. The sliding block is connected to the movable plate, and a fixed block is connected to the top of the movable plate.

[0009] Preferably, the fixing block is internally threaded with a bolt, the end of the bolt away from the protective cylinder is connected to a knob, and the end of the bolt away from the knob is connected to a stop plate. The knob drives the bolt to rotate so that the stop plate presses against the protective cylinder.

[0010] Preferably, the bottom of the protective cylinder is provided with a groove, and a sliding plate is slidably connected inside the groove.

[0011] Preferably, the skateboard is connected to the moving board, and the skateboard is L-shaped.

[0012] Preferably, a scraper is connected to the end of the skateboard away from the mounting plate, and the scraper is movably connected to the protective cylinder.

[0013] Preferably, the movable plate moves on the annular groove, which drives the slide plate to move the scraper, and the scraper is in an arc shape.

[0014] The beneficial effects of this utility model are:

[0015] 1. This structure, through the synergistic action of the movable plate, limiting ring, and retaining ring, can protect workers while cleaning the slag outlet, improving safety. The ejection cleaning method does not require close proximity to the high-temperature outlet, effectively reducing operational risks. The movable plate and protective plate work together to effectively block high-temperature splashes during cleaning, preventing burns. When used in conjunction with the external L-shaped cleaning rod for reciprocating motion, it can also synchronously drive the protective plate to achieve dynamic protection, continuously enhancing operational safety. It is especially suitable for slag cleaning operations in high-frequency, high-temperature environments, significantly improving operational efficiency and personnel safety. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of a slag outlet protection device for a submerged arc furnace according to this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional rear view of the protective device for the slag outlet of a submerged arc furnace according to this utility model.

[0018] Figure 3 The diagram shown is a three-dimensional bottom view of the protective device for the slag outlet of a submerged arc furnace according to this utility model.

[0019] Figure 4 The diagram shown is a three-dimensional orthographic cross-section of a slag outlet protection device for a submerged arc furnace according to this utility model.

[0020] Figure 5 The diagram shown is a three-dimensional side sectional view of a protective device for the slag outlet of a submerged arc furnace according to this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Mounting plate; 10. Protective cylinder; 21. Movable plate; 22. Lifting groove; 23. Lifting block; 24. Protective plate; 25. Handle; 26. Slide rod; 27. Grip; 28. Snap ring; 29. ​​Limiting ring; 210. Movable groove; 31. Circular groove; 32. Sliding block; 33. Fixing block; 34. Bolt; 35. Knob; 36. Support plate; 37. Slide groove; 38. Slide plate; 39. Scraper. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5This utility model provides an embodiment of a protective device for the slag outlet of a submerged arc furnace, comprising an installation plate 1; a protective cylinder 10 mounted on the installation plate 1 and a movable plate 21 mounted on the outer end of the installation plate 1. A lifting groove 22 is provided at the end of the movable plate 21 away from the protective cylinder 10. A lifting block 23 is slidably connected inside the lifting groove 22. A protective plate 24 is connected at the end of the lifting block 23 away from the lifting groove 22. A handle 25 is connected at the end of the protective plate 24 away from the lifting block 23. A sliding rod 26 is slidably connected inside the protective plate 24. A grip 27 is connected at the end of the sliding rod 26 away from the protective plate 24. A retaining ring 28 is connected at the end of the protective plate 24 away from the grip 27. A limiting ring 29 is connected inside the retaining ring 28. A movable groove 210 is provided on the lower inner side of the protective plate 24. The limiting ring 29 supports an external cleaning rod. The grip 27 drives the sliding rod 26 to slide and moves the retaining ring 28. The handle 25 drives the protective plate 24 to slide on the lifting groove 22 via the lifting block 23. By setting the movable plate 21, the external cleaning rod is first vertically erected on the limiting ring 29. The retaining ring 28 is used to limit the position of the cleaning rod. Grasp the handle 27, pull it up quickly and then reset it, and pull it outward to make the retaining ring 28 close to the protective plate 24 to avoid the retaining ring 28 affecting the slag discharge trajectory. The handle 27 drives the sliding rod 26 to drive the retaining ring 28 to move up quickly, and then throw the external cleaning rod into the slag discharge port to impact the stubborn residue, causing the residue to fall through the protective cylinder 10. The movable plate 21 and the protective plate 24 can effectively protect the staff from being burned. If it is necessary to continuously clean the slag discharge port, the external L-shaped cleaning rod can be matched with the movable groove 210. When the external cleaning rod is grasped and reciprocated, it can drive the protective plate 24 to reciprocate, thereby protecting the staff.

[0024] Please see Figures 1-5 In this embodiment, an annular groove 31 is provided at the outer end of the protective cylinder 10. A sliding block 32 is slidably connected inside the annular groove 31. The sliding block 32 is connected to the movable plate 21. A fixing block 33 is connected to the top of the movable plate 21. A bolt 34 is threaded inside the fixing block 33. A knob 35 is connected to the end of the bolt 34 away from the protective cylinder 10. A stop plate 36 is connected to the end of the bolt 34 away from the knob 35. The knob 35 drives the bolt 34 to rotate, causing the stop plate 36 to abut against the protective cylinder 10. The bottom is provided with a sliding groove 37, and a sliding plate 38 is slidably connected inside the sliding groove 37. When the handle 27 is gripped, the handle 27 drives the protective plate 24, and the protective plate 24 drives the movable plate 21, so that the movable plate 21 slides on the annular groove 31 through the sliding block 32, thereby adjusting the position of the movable plate 21 as needed. The movable plate 21, the protective plate 24 and the protective cylinder 10 are all made of iron-nickel-chromium alloy material. Iron-nickel-chromium alloy has extremely strong oxidation resistance and corrosion resistance at high temperature and good creep resistance.

[0025] Please see Figures 2-5In this embodiment, the sliding plate 38 is connected to the movable plate 21. The sliding plate 38 is L-shaped, and a scraper 39 is connected to the end of the sliding plate 38 away from the mounting plate 1. The scraper 39 is movably connected to the protective cylinder 10. The movable plate 21 moves on the annular groove 31, which drives the sliding plate 38 to move the scraper 39. The scraper 39 is arc-shaped. The scraper 39 and the sliding plate 38 are made of iron-nickel-chromium alloy. When the movable plate 21 moves around the protective cylinder 10, it drives the sliding plate 38 to slide in the sliding groove 37. The movement of the sliding plate 38 drives the scraper 39 to move on the inner wall of the protective cylinder 10, thereby scraping off the slag remaining on the inner wall of the protective cylinder 10, and preventing the residue from remaining in the protective cylinder 10 and causing the protective cylinder 10 to become blocked.

[0026] In actual use, first, fix the mounting plate 1 at the slag outlet position. After installation, hold the handle 27. The handle 27 drives the protective plate 24 to move, and at the same time, the protective plate 24 drives the movable plate 21, which slides along the annular groove 31 with the help of the sliding block 32, thereby adjusting the position of the movable plate 21 and completing the positioning according to actual needs. Then, vertically place the external cleaning rod on the limiting ring 29, and limit its position with the retaining ring 28. Operate the handle 27 again, first quickly pull it upward and then reset it, then pull it outward to bring the retaining ring 28 close to the protective plate 24, so as to avoid the retaining ring 28 interfering with the flow trajectory of the slag material. During this process, the handle 27 drives the sliding rod 26, which drives the retaining ring 28 to move upward quickly, thereby cleaning the external cleaning rod. The cleaning rod is inserted into the slag outlet to remove stubborn residue through impact. The residue is then discharged through the protective cylinder 10. The movable plate 21 and the protective plate 24 work together to effectively prevent hot material splashes from causing burns to the workers. In addition, if continuous cleaning of the slag outlet is required, the L-shaped cleaning rod can be used in conjunction with the movable groove 210, so that the cleaning rod drives the protective plate 24 to move back and forth synchronously during the reciprocating motion, thereby forming a dynamic protective barrier for personnel. The handle 27 can also drive the movable plate 21 to rotate along the protective cylinder 10, which in turn drives the sliding plate 38 to slide in the sliding groove 37. The sliding plate 38 drives the scraper 39 to slide along the inner wall of the protective cylinder 10, effectively removing the residue attached to its inner wall, preventing the protective cylinder 10 from being blocked, and ensuring smooth operation of the device.

[0027] Through the above steps, by setting up the coordinated operation of components such as the movable plate 21, the limiting ring 29, and the retaining ring 28, effective protection of operators is achieved while cleaning the slag outlet, improving overall safety. The ejector-type cleaning method avoids personnel approaching high-temperature areas, reducing the risk of burns. The movable plate 21 and the protective plate 24 work together to block high-temperature splashes, and the reciprocating motion of the L-shaped cleaning rod also provides dynamic protection. This method is suitable for high-temperature, high-frequency operation scenarios, significantly improving slag cleaning efficiency and operational safety. It addresses the problem that when using an external cleaning rod to clear the slag outlet, operators must approach the high-temperature slag outlet, exposing themselves to high-temperature radiation and splash risks, posing burn and safety hazards, resulting in poor operational safety and the potential ignition of nearby combustibles or damage to equipment surfaces, posing significant safety risks.

Claims

1. A protective device for the slag outlet of a submerged arc furnace, comprising a mounting plate (1); characterized in that: It also includes a protective cylinder (10) mounted on the mounting plate (1) and a movable plate (21) mounted on the outer end of the mounting plate (1). A lifting groove (22) is provided at the end of the movable plate (21) away from the protective cylinder (10). A lifting block (23) is slidably connected inside the lifting groove (22). A protective plate (24) is connected at the end of the lifting block (23) away from the lifting groove (22). A handle (25) is connected at the end of the protective plate (24) away from the lifting block (23). A sliding rod (26) is slidably connected inside the protective plate (24). A handle (27) is connected to the end of the rod (26) away from the protective plate (24). A retaining ring (28) is connected to the end of the protective plate (24) away from the handle (27). A limiting ring (29) is connected inside the retaining ring (28). An active groove (210) is opened on the lower side of the interior of the protective plate (24). The limiting ring (29) is used to support the external cleaning rod. The handle (27) drives the sliding rod (26) to slide and drive the retaining ring (28) to move. The handle (25) drives the protective plate (24) to slide on the lifting groove (22) through the lifting block (23).

2. The slag outlet protection device for a submerged arc furnace according to claim 1, characterized in that: The outer end of the protective cylinder (10) is provided with an annular groove (31), and a sliding block (32) is slidably connected inside the annular groove (31). The sliding block (32) is connected to the movable plate (21), and a fixed block (33) is connected to the top of the movable plate (21).

3. The slag outlet protection device for a submerged arc furnace according to claim 2, characterized in that: The fixing block (33) has an internal threaded connection to a bolt (34). The end of the bolt (34) away from the protective cylinder (10) is connected to a knob (35). The end of the bolt (34) away from the knob (35) is connected to a stop plate (36). The knob (35) drives the bolt (34) to rotate so that the stop plate (36) abuts against the protective cylinder (10).

4. The slag outlet protection device for a submerged arc furnace according to claim 3, characterized in that: The bottom of the protective cylinder (10) is provided with a groove (37), and a sliding plate (38) is slidably connected inside the groove (37).

5. The slag outlet protection device for a submerged arc furnace according to claim 4, characterized in that: The skateboard (38) is connected to the moving board (21), and the skateboard (38) is L-shaped.

6. The slag outlet protection device for a submerged arc furnace according to claim 5, characterized in that: A scraper (39) is connected to the end of the slide plate (38) away from the mounting plate (1), and the scraper (39) is movably connected to the protective cylinder (10).

7. The slag outlet protection device for a submerged arc furnace according to claim 6, characterized in that: The moving plate (21) moves on the annular groove (31), driving the sliding plate (38) to move the scraper (39), which is in an arc shape.

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