Oxygen lance slag scraping device

Abstract

The utility model discloses an oxygen lance slag scraping device, which belongs to the technical field of oxygen lance slag removal, and comprises a fixed seat, two symmetrically arranged crank arms, two scraper components, a connecting fork and a driving mechanism, one end of each crank arm is rotatably connected to the fixed seat, the two scraper components are rotatably connected to the other ends of the two crank arms respectively, and the connecting fork is connected with the driving mechanism. The connecting fork is provided with a first fork part and a second fork part which are perpendicular to each other, the first fork part is rotationally connected with the middle of the crank arm, the driving mechanism is provided with a telescopic end, and the telescopic end is rotationally connected to the second fork part; when the driving mechanism is in a working state, the telescopic end drives the crank arm to rotate, so that the two scraper assemblies get close to each other until the two scraper assemblies surround the oxygen lance, or the two scraper assemblies get away from each other. According to the utility model, the probability of deformation of the telescopic end of the driving mechanism can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of oxygen lance slag removal technology, and in particular, to an oxygen lance slag scraping device. Background Technology

[0002] As a crucial piece of equipment in the steelmaking converter smelting process, the oxygen lance is responsible for blowing oxygen into the molten pool during the blowing process. However, slag adhesion to the oxygen lance is a common phenomenon in converter steelmaking. During the blowing process, slag adhesion leads to poor heat dissipation of the oxygen lance, making the oxygen lance nozzle prone to burning out. It also causes difficulties in raising and lowering the oxygen lance, preventing it from being pulled out of the furnace mouth and affecting normal smelting operations.

[0003] Currently, the main method for removing slag from the oxygen lance is through a slag scraper. The existing slag scraper mainly consists of symmetrically arranged crank arms, a scraper blade rotated at the front end of the crank arms, and a drive mechanism. The telescopic end of the drive mechanism drives the crank arms to rotate, so that the scrapers on the two crank arms move closer or further apart.

[0004] However, when the scraper removes slag from the oxygen lance, it vibrates. At this time, the scraper will deflect not only in the axial direction of the oxygen lance but also in the radial direction. This will cause the swing arm to deflect in both the axial and radial directions of the oxygen lance. Since the extension end of the drive mechanism is rotatably connected to the crank arm in the axial direction of the oxygen lance, the extension end of the drive mechanism is very prone to deformation, causing the scrapers on the two crank arms to be unable to move closer or further apart. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an oxygen lance scraping device designed to reduce the probability of deformation at the telescopic end of the drive mechanism.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An oxygen lance scraping device includes a fixed base, two symmetrically arranged crank arms, two scraper assemblies, a connecting fork, and a drive mechanism. One end of each crank arm is rotatably connected to the fixed base, and the two scraper assemblies are rotatably connected to the other ends of the two crank arms, respectively. The connecting fork has a first fork portion and a second fork portion that are perpendicular to each other. The first fork portion is rotatably connected to the middle portion of the crank arm. The drive mechanism has a telescopic end that is rotatably connected to the second fork portion. When the drive mechanism is in operation, the telescopic end drives the crank arms to rotate, so that the two scraper assemblies move closer to each other until they encircle the oxygen lance, or move the two scraper assemblies away from each other.

[0008] Furthermore, the drive mechanism includes a telescopic cylinder, the telescopic shaft of which is rotatably connected to the second fork.

[0009] Furthermore, the drive mechanism also includes a cylinder seat, the telescopic cylinder is rotatably connected to the cylinder seat, and the rotation plane of the telescopic cylinder is parallel to the rotation plane of the crank arm.

[0010] Furthermore, the scraper assembly includes a blade holder, a main blade, and a secondary blade. The blade holder is pivotally connected to the crank arm. One end of the blade holder is provided with an arc-shaped edge that matches the outer wall of the oxygen lance. The main blade is disposed on one side surface of the blade holder and close to the arc-shaped edge. The secondary blade is disposed on one side surface of the blade holder and located on both sides of the main blade. The secondary blade is disposed on the same side as the main blade.

[0011] Furthermore, the tool holder is provided with a first mounting groove, and the main blade includes a first mounting block and a first cutting edge portion. The first mounting block matches the first mounting groove, and the first cutting edge portion is disposed on the first mounting block.

[0012] Furthermore, the cutting direction of the first cutting edge is parallel to the axial direction of the oxygen lance.

[0013] Furthermore, a reinforcing rib is provided between the first mounting block and the first cutting edge.

[0014] Furthermore, the tool holder is provided with a second mounting groove, and the secondary blade includes a second mounting block and a second cutting edge. The second mounting block matches the second mounting groove, and the second cutting edge is disposed on the second mounting block.

[0015] Furthermore, the second cutting edge is symmetrically arranged at opposite ends of the second mounting block.

[0016] Furthermore, the end of the tool holder away from the arc-shaped edge is provided with opposing clamping arms, and the crank arm is pivotally connected between the two clamping arms.

[0017] The present invention has the following beneficial effects: by having a first fork and a second fork that are perpendicular to each other and rotatably connected to the telescopic end and the rotating arm of the drive mechanism, when the scraper assembly deflects in the axial and radial directions of the oxygen lance, the deflection force can be well balanced, avoiding large deformation of the telescopic end of the drive mechanism due to uneven force, thereby ensuring that the equipment can perform slag scraping operation normally.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the scraper assembly in one embodiment of the present invention when it does not surround the oxygen lance;

[0021] Figure 2 This is a first-view structural schematic diagram of the scraper assembly surrounding the oxygen lance in one embodiment of the present invention.

[0022] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a structural schematic diagram from a second perspective of the scraper assembly surrounding the oxygen lance in one embodiment of the present invention.

[0024] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0025] Figure 6 This is a schematic diagram of the scraper assembly in one embodiment of the present invention;

[0026] Legend:

[0027] Oxygen lance 10, fixed base 100, two symmetrically arranged crank arms 200, two scraper assemblies 300, blade holder 310, arc edge 311, first mounting groove 312, second mounting groove 313, clamping arm 314, main blade 320, first mounting block 321, first cutting edge 322, reinforcing rib 323, secondary blade 330, second mounting block 331, second cutting edge 332, connecting fork 400, first fork 410, second fork 420, drive mechanism 500, telescopic cylinder 510, cylinder seat 520. Detailed Implementation

[0028] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] refer to Figures 1 to 6 An oxygen lance 10 slag scraping device according to an embodiment of the present utility model includes a fixed base 100, two symmetrically arranged crank arms 200, two scraper assemblies 300, a connecting fork 400, and a drive mechanism 500.

[0033] Specifically, one end of the crank arm 200 is rotatably connected to the fixed base 100 via a pin, and the two scraper assemblies 300 are rotatably connected to the other ends of the two crank arms 200 via pins respectively. The connecting fork 400 has a first fork portion 410 and a second fork portion 420 that are perpendicular to each other. The first fork portion 410 is rotatably connected to the middle part of the crank arm 200. The drive mechanism 500 has a telescopic end that is rotatably connected to the second fork portion 420. When the drive mechanism 500 is in operation, the telescopic end extends, driving the crank arm 200 to rotate relative to the fixed base 100. This causes the two scraper assemblies 300 to approach each other until they encircle the oxygen lance 10. During this process, because the scraper assembly 300 and the crank arm 200 are rotatably connected, the scraper assembly 300 can swing appropriately as the crank arm 200 rotates relative to the fixed base 100. This allows the two scraper assemblies 300 to automatically center and adjust the oxygen lance 10 as they encircle it, ensuring that the two scraper assemblies 300 fit well against the outer peripheral wall of the oxygen lance 10 and improving the slag removal effect. Similarly, when the drive mechanism 500 is in operation, the telescopic end retracts, driving the crank arm 200 to rotate in the opposite direction relative to the fixed base 100. This causes the two scraper assemblies 300 to move away from each other, thus moving away from the oxygen lance 10. At this time, the oxygen lance 10 can move freely up and down.

[0034] In this embodiment, during the process of the two scraper assemblies 300 surrounding the oxygen lance 10 to scrape slag, when the scraper assembly 300 vibrates, it will deflect not only in the axial direction of the oxygen lance 10 but also in the radial direction. This will cause the swing arm to deflect in both the axial and radial directions of the oxygen lance 10. Since the telescopic end of the drive mechanism 500 and the crank arm 200 are rotatably connected by a connecting fork 400 having a first fork 410 and a second fork 420 that are perpendicular to each other, the telescopic end of the drive mechanism 500 has a lot of buffer space in both the axial and radial directions of the oxygen lance 10. This prevents the telescopic end from easily deforming, thus ensuring the smooth scraping of slag.

[0035] In some embodiments, such as Figure 1 , Figure 2 As shown, the drive mechanism 500 includes a telescopic cylinder 510, and the telescopic shaft of the telescopic cylinder 510 is rotatably connected to the second fork 420.

[0036] In some embodiments, such as Figure 1 , Figure 2 As shown, the drive mechanism 500 also includes a cylinder seat 520, and the telescopic cylinder 510 is rotatably connected to the cylinder seat 520, with the rotation plane of the telescopic cylinder 510 parallel to the rotation plane of the crank arm 200. Thus, when the scraper assembly 300 deflects significantly in the radial direction of the oxygen lance 10, the telescopic cylinder 510 can rotate relative to the cylinder seat 520 to counteract the deflection in this direction as much as possible, ensuring that the telescopic shaft of the telescopic cylinder 510 is subjected to balanced force and preventing deformation.

[0037] In some embodiments, such as Figure 3 , Figure 6 As shown, the scraper assembly 300 includes a blade holder 310, a main blade 320, and a secondary blade 330. Specifically, the blade holder 310 is pivotally connected to the crank arm 200 via a pin. One end of the blade holder 310 is provided with an arc-shaped edge 311 that matches the outer wall of the oxygen lance 10. When the two blade holders 310 are brought close together, the arc-shaped edge 311 on the two blade holders 310 surrounds the oxygen lance 10. The main blade 320 is disposed on one side surface of the blade holder 310 and close to the arc-shaped edge 311. The secondary blade 330 is disposed on one side surface of the blade holder 310 and located on both sides of the main blade 320. The secondary blade 330 is disposed on the same side as the main blade 320. When the arc-shaped edges 311 on the two tool holders 310 surround the oxygen lance 10, the main blade 320 and the secondary blade 330 both abut against the outer peripheral wall of the oxygen lance 10. When the oxygen lance 10 is lifted upward, the main blade 320 and the secondary blade 330 will scrape off all the steel slag on the outer peripheral wall of the oxygen lance 10.

[0038] In some embodiments, such as Figure 6As shown, the tool holder 310 is provided with a first mounting groove 312. The main blade 320 includes a first mounting block 321 and a first cutting edge 322. The first mounting block 321 matches the first mounting groove 312, and the first cutting edge 322 is disposed on the first mounting block 321. Through the connection and cooperation between the first mounting block 321 and the first mounting groove 312, it is not only convenient to replace and install the main blade, but also the limiting effect generated by the first mounting groove 312 can prevent the first mounting block 321 from loosening, ensuring that the first cutting edge 322 can stably scrape slag.

[0039] In some embodiments, such as Figure 3 As shown, the cutting direction of the first cutting edge 322 is parallel to the axial direction of the oxygen lance 10, which facilitates slag scraping.

[0040] In some embodiments, such as Figure 5 , Figure 6 As shown, a reinforcing rib 323 is provided between the first mounting block 321 and the first cutting edge 322. By providing the reinforcing rib 323, the structural strength of the first cutting edge 322 can be improved, the probability of damage to the tool holder 310 can be reduced, and the service life of the main blade 320 can be increased.

[0041] In some embodiments, such as Figure 6 As shown, the tool holder 310 is provided with a second mounting groove 313. The secondary blade 330 includes a second mounting block 331 and a second cutting edge 332. The second mounting block 331 matches the second mounting groove 313, and the second cutting edge 332 is disposed on the second mounting block 331. Through the connection and cooperation between the second mounting block 331 and the second mounting groove 313, it is not only convenient to replace and install the secondary blade 330, but also the limiting effect generated by the second mounting groove 313 can prevent the second mounting block 331 from loosening, ensuring that the second cutting edge 332 can stably scrape slag.

[0042] In some embodiments, such as Figure 6 As shown, the second cutting edge 332 is symmetrically arranged at opposite ends of the second mounting block 331. By adopting a symmetrical structure, the second cutting edge 332 can be used twice by changing its position, thereby increasing the service life of the secondary blade 330.

[0043] In some embodiments, such as Figure 6 As shown, the end of the tool holder 310 away from the arc-shaped edge 311 is provided with opposing clamping arms 314, and the crank arm 200 is pivotally connected between the two clamping arms 314. By setting the clamping arms 314, the left and right deflection of the tool holder 310 can be limited. On the one hand, this facilitates the tool holder 310 to quickly surround the oxygen lance 10, and on the other hand, it reduces the deflection of the tool holder 310 during slag scraping, thereby reducing the uneven compression on the telescopic end of the drive mechanism 500 and reducing the probability of deformation of the telescopic end.

[0044] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An oxygen lance scraping device, characterized in that, The oxygen lance scraping device includes: Fixture (100); Two symmetrically arranged crank arms (200) are provided, one end of which is rotatably connected to the fixed base (100); Two scraper assemblies (300) are rotatably connected to the other ends of the two crank arms (200); The connecting fork (400) has a first fork portion (410) and a second fork portion (420) that are perpendicular to each other, and the first fork portion (410) is rotatably connected to the middle part of the crank arm (200); The drive mechanism (500) has a telescopic end, which is rotatably connected to the second fork (420). When the drive mechanism (500) is in operation, the telescopic end drives the crank arm (200) to rotate so that the two scraper assemblies (300) move closer to each other until they surround the oxygen gun, or move the two scraper assemblies (300) away from each other.

2. The oxygen lance scraping device according to claim 1, characterized in that, The drive mechanism (500) includes a telescopic cylinder (510), and the telescopic shaft (511) of the telescopic cylinder is rotatably connected to the second fork (420).

3. The oxygen lance scraping device according to claim 2, characterized in that, The drive mechanism (500) further includes a cylinder seat (520), the telescopic cylinder (510) is rotatably connected to the cylinder seat (520), and the rotation plane of the telescopic cylinder (510) is parallel to the rotation plane of the crank arm (200).

4. The oxygen lance scraping device according to claim 1, characterized in that, The scraper assembly (300) includes: The tool holder (310) is pivotally connected to the crank arm (200), and one end of the tool holder (310) is provided with an arc-shaped edge (311) that matches the outer wall of the oxygen lance. The main blade (320) is disposed on one side surface of the tool holder (310) and close to the arc-shaped edge (311). The secondary blade (330) is disposed on one side surface of the blade holder (310) and located on both sides of the main blade (320). The secondary blade (330) is disposed on the same side as the main blade (320).

5. The oxygen lance scraping device according to claim 4, characterized in that, The tool holder (310) is provided with a first mounting groove (312), and the main blade (320) includes a first mounting block (321) and a first cutting edge (322). The first mounting block (321) matches the first mounting groove (312), and the first cutting edge (322) is disposed on the first mounting block (321).

6. The oxygen lance scraping device according to claim 5, characterized in that, The cutting direction of the first cutting edge (322) is parallel to the axial direction of the oxygen lance.

7. The oxygen lance scraping device according to claim 5, characterized in that, A reinforcing rib (323) is provided between the first mounting block (321) and the first blade portion (322).

8. The oxygen lance scraping device according to claim 4, characterized in that, The tool holder (310) is provided with a second mounting groove (313), and the secondary blade (330) includes a second mounting block (331) and a second cutting edge (332). The second mounting block (331) matches the second mounting groove (313), and the second cutting edge (332) is disposed on the second mounting block (331).

9. The oxygen lance scraping device according to claim 8, characterized in that, The second blade portion (332) is symmetrically arranged at opposite ends of the second mounting block (331).

10. The oxygen lance scraping device according to claim 4, characterized in that, The tool holder (310) has a clamping arm (314) arranged opposite to the end of the arc-shaped edge (311), and the crank arm (200) is pivotally connected between the two clamping arms (314).

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