Deslagging structure of oxygen lance

Abstract

The utility model relates to the technical field of metallurgical equipment, and discloses an oxygen lance deslagging structure. The oxygen lance deslagging structure comprises a supporting frame, a limiting frame is fixedly installed above the supporting frame, a supporting rod is installed below the limiting frame in a penetrating and inserting mode, a base is fixedly installed above the supporting rod, a scraping plate is fixedly installed on the inner side of the base, a limiting column is fixedly installed on the left side of the base, and the limiting column is fixedly installed on the right side of the base. Springs are installed on the outer sides of the limiting columns in a penetrating mode, the supporting rods are symmetrically installed on the vertical faces of the front side and the rear side of the supporting frame in a front-back mode, the supporting rods are symmetrically installed on the vertical faces of the left side and the right side of the limiting frame in a left-right mode, and the supporting rods are in sliding connection with the supporting frame and the limiting frame. In the process that the oxygen lance moves up and down, steel slag on the front side and the rear side of the surface of the oxygen lance can be removed by the scraping plate in the supporting frame, steel slag on the two sides can be removed by the scraping plate in the limiting frame, and therefore steel slag residues are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to an oxygen lance slag removal structure. Background Art

[0002] Oxygen lances are essential process equipment for top- and bottom-blown converters. When blowing oxygen, the lance body comes into contact with liquid slag, which can easily cause slag to adhere to the lance. Currently, most domestic slag removal methods are manual, with some steel mills using slag scrapers. Manual slag removal leads to numerous workplace accidents each year, with safety hazards and high-intensity work being its greatest drawbacks. Slag scrapers utilize the upward force of the oxygen lance's winch to scrape away slag adhering to the lance body.

[0003] The existing Chinese utility model patent with reference publication number CN209397235U discloses a tapered oxygen lance slag cleaning mechanism, comprising a fixed frame and two sliding blocks slidably mounted thereon; when the two sliding blocks are brought close together, an opening is formed in the middle, and each sliding block is equipped with a scraper assembly; the fixed frame is provided with two horizontally arranged rails, the sliding block is located between the two rails, and pulleys are provided on both sides of the sliding block, which are slidably mounted within the rails; a cylinder is mounted on the fixed frame, and the telescopic rod of the cylinder is hinged to the sliding block; a guide device is installed on each of the two fixed frames, and the guide device includes two vertically spaced vertical plates and a horizontal shaft fixedly mounted on the vertical plates, with guide wheels mounted at both ends of the horizontal shaft; a scraper assembly is mounted below each guide wheel. The utility model provides a tapered oxygen lance slag cleaning mechanism, in which the oxygen lance winch and scraper blades are subjected to a rated impact load during slag removal. When the impact force is too large, the mechanism has an overload protection function, which will not cause the wire rope to break or the scraper to be damaged. The manufacturing cost is low, and the scraping operation is safer.

[0004] The oxygen lance structure is lifted deep into the furnace by a crane. When removing slag, the oxygen lance is generally moved up and down by the crane so that the scraper can scrape off the slag on the outside of the oxygen lance. Since the arc shape of the scraper is fixed and the oxygen lance is a conical structure, the scraper cannot cover the largest diameter of the oxygen lance, resulting in residual slag. At the same time, in order to ensure that the scraper is always in contact with the surface of the oxygen lance, the position of the scraper is generally limited by a spring. However, the elastic force that the spring can provide is limited by the degree of deformation. The relative pressure between the bottom end of the oxygen lance surface and the scraper is insufficient, resulting in residual slag. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the existing technology, the utility model provides an oxygen lance slag removal structure, which has the advantages of avoiding steel slag residue and maintaining the relative pressure between the scraper and the oxygen lance, thereby solving the above technical problems.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oxygen lance slag removal structure, comprising: a support frame, a limiting frame fixedly installed above the support frame, a support rod insertedly installed below the limiting frame, a base fixedly installed above the support rod, a scraper fixedly installed on the inner side of the base, a limiting column fixedly installed on the left side of the base, a spring insertedly installed on the outer side of the limiting column, a limiting plate fixedly installed on one end of the spring, a fixed frame fixedly installed on the left side of the limiting frame, and a hydraulic piston fixedly installed inside the fixed frame; the spring can apply a force directed to the oxygen lance to the base.

[0009] As an optimal technical solution of the present invention, the angle between the support frame and the limit frame is ninety degrees, and the front and rear sides of the support frame and the left and right sides of the limit frame are provided with a sliding groove structure that engages with the support rod; the limit frame can limit the position of the support rod.

[0010] As an optimal technical solution of the present invention, the support rod is symmetrically installed on the front and rear facades of the support frame, and the support rod is symmetrically installed on the left and right facades of the limit frame. The support rod is slidably connected to the support frame and the limit frame; the support rod can limit the position of the base.

[0011] As a preferred technical solution of the present invention, the base is an arc-shaped structure, and the base is movably connected to the limit frame and the support frame through the support rod; the base can facilitate the connection between the scraper and the support rod.

[0012] As the preferred technical solution of the present invention, the limit column is installed on the left side of the base symmetrically with the center of the base as the reference, and an annular protrusion is provided at the end of the limit column. The limit column and the support frame and the limit frame form a sliding connection; the limit column can limit the moving direction of the base.

[0013] As a preferred technical solution of the present invention, a sliding connection is formed between the limiting plate and the limiting column, and the spring is located between the limiting plate and the base; the limiting plate can limit the position of one end of the spring.

[0014] As the preferred technical solution of the present invention, the fixed frame is symmetrically installed on the front and rear sides of the support frame, and the fixed frame is symmetrically installed on the left and right sides of the limit frame. The movable end of the hydraulic piston passes through the support frame, the limit frame and the limit plate to form a fixed connection; the hydraulic piston can adjust the position of the limit plate.

[0015] Compared with the prior art, the present invention provides an oxygen lance slag removal structure with the following beneficial effects:

[0016] 1. The utility model sets a limit plate, which is fixedly installed on one end of the spring, and the limit column passes through the limit plate. A sliding connection is formed between the limit plate and the limit column, and one side of the limit plate is fixedly connected to the movable end of the hydraulic piston. When the scraper contacts the surface of the oxygen lance and moves up and down, the position of the scraper will change horizontally. Since the position of the limit plate is limited by the hydraulic piston, the scraper will squeeze the spring through the base. When the spring contracts, it will apply a force directed to the surface of the oxygen lance to the scraper. The limit plate is driven to move by the hydraulic piston to adjust the distance between the limit plate and the base, thereby controlling the elastic deformation degree of the spring to keep the elastic force of the spring at an appropriate level, thereby keeping the relative pressure between the scraper and the oxygen lance at an appropriate size, avoiding the situation where excessive pressure damages the outer wall of the oxygen lance or too low pressure makes it impossible to remove the slag.

[0017] 2. The utility model sets a limit frame, and the angle between the support frame and the limit frame is ninety degrees. The front and rear sides of the support frame and the left and right sides of the limit frame are provided with a slide structure engaged with the support rod. The support rod is symmetrically installed on the front and rear facades of the support frame, and the support rod is symmetrically installed on the left and right facades of the limit frame. A sliding connection is formed between the support rod, the support frame and the limit frame. This method can make the scraper be distributed in a "cross" shape that is staggered up and down. In the process of the oxygen lance moving up and down, the steel slag on the front and rear sides of the oxygen lance surface will be removed by the scraper inside the support frame, and the steel slag on both sides will be removed by the scraper inside the limit frame, thereby avoiding steel slag residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the support frame and the limit frame of the utility model;

[0020] Figure 3 This is a schematic diagram of the bottom surface structure of the limit frame of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the hydraulic piston and the limit plate of the utility model;

[0022] Among them: 1. Support frame; 11. Limit frame; 12. Support rod; 13. Base; 14. Scraper; 15. Limit column; 16. Spring; 17. Limit plate; 18. Fixed frame; 19. Hydraulic piston. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] See also Figure 1 - Figure 4 In this embodiment, an oxygen lance slag removal structure includes: a support frame 1, a limiting frame 11 is fixedly installed above the support frame 1, a support rod 12 is inserted and installed below the limiting frame 11, a base 13 is fixedly installed above the support rod 12, a scraper 14 is fixedly installed on the inner side of the base 13, a limiting column 15 is fixedly installed on the left side of the base 13, a spring 16 is inserted and installed on the outer side of the limiting column 15, a limiting plate 17 is fixedly installed on one end of the spring 16, a fixing frame 18 is fixedly installed on the left side of the limiting frame 11, and a hydraulic piston 19 is fixedly installed inside the fixing frame 18.

[0027] The included angle between the support frame 1 and the limiting frame 11 is ninety degrees. The front and rear sides of the support frame 1 and the left and right sides of the limiting frame 11 are provided with sliding groove structures that are engaged with the support rod 12.

[0028] The support rod 12 is symmetrically installed on the front and rear facades of the support frame 1, and the support rod 12 is symmetrically installed on the left and right facades of the limit frame 11. The support rod 12 and the support frame 1 and the limit frame 11 form a sliding connection.

[0029] The base 13 is an arc-shaped structure, and is movably connected to the limiting frame 11 and the supporting frame 1 through the supporting rod 12 .

[0030] The limiting column 15 is installed on the left side of the base 13 symmetrically with respect to the center of the base 13 . An annular protrusion is provided at the end of the limiting column 15 . The limiting column 15 is in sliding connection with the support frame 1 and the limiting frame 11 .

[0031] The limiting plate 17 and the limiting column 15 are in sliding connection with each other, and the spring 16 is located between the limiting plate 17 and the base 13 .

[0032] The fixed frame 18 is symmetrically installed on the front and rear sides of the support frame 1, and the fixed frame 18 is symmetrically installed on the left and right sides of the limit frame 11. The movable end of the hydraulic piston 19 passes through the support frame 1, the limit frame 11 and the limit plate 17 to form a fixed connection.

[0033] Specifically, the support frame 1 can support the limit frame 11, the limit frame 11 can limit the position of the support rod 12, the support rod 12 can limit the position of the base 13, the base 13 can facilitate the connection between the scraper 14 and the support rod 12, the scraper 14 can remove the slag outside the oxygen gun, the limit column 15 can limit the moving direction of the base 13, the spring 16 can apply a force pointing to the oxygen gun to the base 13, the limit plate 17 can limit the position of one end of the spring 16, the fixed frame 18 can limit the position of the end of the hydraulic piston 19, and the hydraulic piston 19 can adjust the position of the limit plate 17.

[0034] When in use, the limit plate 17 is fixedly mounted on one end of the spring 16, and the limit column 15 passes through the limit plate 17. A sliding connection is formed between the limit plate 17 and the limit column 15. One side of the limit plate 17 is fixedly connected to the movable end of the hydraulic piston 19. When the scraper 14 contacts the surface of the oxygen lance and moves up and down, the position of the scraper 14 will change horizontally. Since the position of the limit plate 17 is limited by the hydraulic piston 19, the scraper 14 will squeeze the spring 16 through the base 13. When the spring 16 contracts, it will apply a force to the scraper 14 pointing to the surface of the oxygen lance. The limit plate 17 is driven to move by the hydraulic piston 19 to adjust the distance between the limit plate 17 and the base 13, thereby controlling the elastic deformation degree of the spring 16 to keep the elastic force of the spring 16 at an appropriate level, so that the relative pressure between the scraper 14 and the oxygen lance is maintained. The angle between the support frame 1 and the limit frame 11 is ninety degrees to avoid the situation where excessive pressure damages the outer wall of the oxygen gun or the pressure is too low to remove the slag. The front and rear sides of the support frame 1 and the left and right sides of the limit frame 11 are provided with a slide structure that engages with the support rod 12. The support rod 12 is symmetrically installed on the front and rear facades of the support frame 1, and the support rod 12 is symmetrically installed on the left and right facades of the limit frame 11. A sliding connection is formed between the support rod 12 and the support frame 1 and the limit frame 11. This method can make the scraper 14 be distributed in a "cross" shape with the upper and lower staggered. In the process of the oxygen gun moving up and down, the steel slag on the front and rear sides of the oxygen gun surface will be removed by the scraper 14 inside the support frame 1, and the steel slag on both sides will be removed by the scraper 14 inside the limit frame 11, thereby avoiding steel slag residue.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oxygen lance slag removal structure, characterized in that: include: A support frame (1) is provided, wherein a limiting frame (11) is fixedly installed above the support frame (1), a supporting rod (12) is inserted and installed below the limiting frame (11), a base (13) is fixedly installed above the supporting rod (12), a scraper (14) is fixedly installed on the inner side of the base (13), a limiting column (15) is fixedly installed on the left side of the base (13), a spring (16) is inserted and installed on the outer side of the limiting column (15), a limiting plate (17) is fixedly installed on one end of the spring (16), a fixed frame (18) is fixedly installed on the left side of the limiting frame (11), and a hydraulic piston (19) is fixedly installed inside the fixed frame (18).

2. The oxygen lance slag removal structure according to claim 1, characterized in that: The angle between the support frame (1) and the limiting frame (11) is ninety degrees, and the front and rear sides of the support frame (1) and the left and right sides of the limiting frame (11) are provided with a sliding groove structure that is engaged with the support rod (12).

3. The oxygen lance slag removal structure according to claim 1, characterized in that: The support rod (12) is symmetrically mounted on the front and rear elevations of the support frame (1), and the support rod (12) is symmetrically mounted on the left and right elevations of the limiting frame (11), and a sliding connection is formed between the support rod (12), the support frame (1), and the limiting frame (11).

4. The oxygen lance slag removal structure according to claim 1, characterized in that: The base (13) is an arc-shaped structure, and the base (13) is movably connected to the limiting frame (11) and the supporting frame (1) through the supporting rod (12).

5. The oxygen lance slag removal structure according to claim 1, characterized in that: The limiting column (15) is symmetrically installed on the left side of the base (13) with the center of the base (13) as a reference, and an annular protrusion is provided at the end of the limiting column (15). The limiting column (15) is in sliding connection with the support frame (1) and the limiting frame (11).

6. The oxygen lance slag removal structure according to claim 1, characterized in that: The limiting plate (17) and the limiting column (15) are in sliding connection with each other, and the spring (16) is located between the limiting plate (17) and the base (13).

7. The oxygen lance slag removal structure according to claim 1, characterized in that: The fixing frame (18) is symmetrically mounted on the front and rear sides of the support frame (1), and the fixing frame (18) is symmetrically mounted on the left and right sides of the limiting frame (11). The movable end of the hydraulic piston (19) passes through the support frame (1), the limiting frame (11) and the limiting plate (17) to form a fixed connection.

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