A slag scraping device for an oxygen lance

Abstract

The utility model relates to the technical field of oxygen lance slag scraping, in particular to an oxygen lance slag scraping device, which comprises a crossbeam, a channel for passing through an oxygen lance is formed in the crossbeam, and the two sides of the channel are respectively hinged to a support, each support is fixedly connected with a scraper on the side close to the channel, all the scrapers on the two supports are arranged along the circumferential direction of the oxygen lance, and the two supports can rotate around the hinge shaft of the support and the crossbeam to realize approaching and moving away from each other. The utility model has the beneficial effects that the two supports are made to approach each other, so that the oxygen lance can be clamped by the two supports when passing through the channel, the scraper is abutted against the outer wall of the oxygen lance, the oxygen lance is lifted upward, the scraper can scrape off the steel slag on the outer wall of the oxygen lance, and the steel slag on the outer wall of the oxygen lance is cleaned in this way. The two supports are made to move away from each other, the support and the oxygen lance can be loosened, and the oxygen lance is convenient to pass through. The cost is low, the structure is simple and reliable, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of oxygen lance scraping technology, specifically to an oxygen lance scraping device. Background Technology

[0002] The oxygen lance is one of the main pieces of equipment in a converter system, primarily used for oxygen blowing. It reacts with carbon in the molten iron to reduce its carbon content and, by adding different alloying materials, transforms the iron into steel. During the blowing process, the molten slag in the converter continuously washes against the outer wall of the oxygen lance, inevitably causing slag to adhere to the outer steel tube. If this slag is not removed promptly, it becomes increasingly thick with each smelting cycle, affecting heat exchange and potentially preventing the lance from raising and lowering properly. Forced operation will burn out the lance's lifting motor or break the wire rope. In such cases, the slag-covered lance must be cut off with a flame cutter, dismantled, and replaced with a new one. This significantly reduces the lance's lifespan, increasing wear and tear costs and disrupting the continuity of steelmaking production due to frequent cutting and replacement, thus increasing the workload of workers.

[0003] Currently, a slag scraping device is commonly used to remove steel slag from the oxygen lance. A conventional slag scraping device usually consists of two relatively sliding carriages. Each carriage has a scraper connected to its side closest to it. Driven by the piston rod of the push-pull cylinder, the carriages can move closer to each other and surround the outside of the oxygen lance. The scraper abuts against the outer wall of the oxygen lance. When the oxygen lance moves upward, the steel slag can be scraped off by the scraper.

[0004] However, existing slag scraping devices use a lot of materials, require the wheels of the trolley and guide rails to slide together, have a relatively complex structure, and are costly. Utility Model Content

[0005] To address the technical problems of existing slag scraping devices, such as the large amount of material used, the need for wheels and guide rails to slide together, the complex structure, and the high cost, this utility model provides an oxygen lance slag scraping device.

[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 crossbeam with a channel for the oxygen lance to pass through. The channel is hinged to a support on each side. Each support has a scraper fixedly connected to the side closest to the channel. All the scrapers on the two supports are arranged along the circumferential direction of the oxygen lance. Both supports can rotate around the hinge axis between the support and the crossbeam to move closer to or further away from each other.

[0008] The above structural design, with the two supports close together, allows the oxygen lance to be held in place as it passes through the channel. The scraper presses against the outer wall of the oxygen lance, causing it to rise. The scraper then removes the steel slag from the outer wall, thus cleaning the lance. Alternatively, placing the two supports further apart allows for easier passage of the oxygen lance, freeing the supports from the lance. This design is cost-effective, simple and reliable, and easy to operate.

[0009] As a preferred implementation of an oxygen lance scraping device, each support is provided with a telescopic mechanism on the side away from the channel. The telescopic mechanism is hinged to the crossbeam, and the output end of each telescopic mechanism is hinged to the support closest to it. The telescopic mechanism can drive the support to rotate around the hinge axis between the support and the crossbeam.

[0010] With the above structural design, the extended output ends of the two telescopic mechanisms allow the two supports to move closer to each other, while the retracted output ends of the two telescopic mechanisms allow the two supports to move further apart.

[0011] As a preferred implementation of an oxygen lance scraping device, the telescopic mechanism is a pneumatic or hydraulic cylinder. The telescopic mechanism has a simple and reliable structure.

[0012] In a preferred implementation of an oxygen lance scraping device, a connecting rod is connected between two supports, and each end of the connecting rod is rotatably connected to the hinge axis of a support and a crossbeam.

[0013] The above structural design improves the parallelism between the two supports and the hinge axis of the crossbeam.

[0014] As a preferred implementation of an oxygen lance scraping device, the crossbeam includes a first support and a second support, the first support and the second support are arranged in parallel, a third support and a fourth support are connected between the first support and the second support, a channel is formed between the third support and the fourth support, one support is hinged to the third support, and the other support is hinged to the fourth support.

[0015] By adopting the above structural scheme, the material utilization rate of the crossbeam is high, and the cost of the crossbeam is reduced.

[0016] In a preferred embodiment of an oxygen lance scraping device, a fifth support and a sixth support are connected between the first support and the second support. The fifth support is located on the side of the third support away from the fourth support, and the sixth support is located on the side of the fourth support away from the third support. One telescopic mechanism is hinged to the fifth support, and another telescopic mechanism is hinged to the sixth support.

[0017] By adopting the above structural design, the amount of material used for the crossbeams is reduced, thus lowering the cost of the crossbeams.

[0018] As a preferred implementation of an oxygen lance scraping device, several scrapers are fixedly connected to each support.

[0019] The above structural design improves the cleaning effect.

[0020] As a preferred implementation of the oxygen lance scraping device, it also includes a tension value detector, which is installed on the steel wire rope of the oxygen lance; the tension value detector is electrically connected to the controller, and the controller is electrically connected to the two telescopic mechanisms respectively.

[0021] With the above structural design, during the steel slag cleaning process, when the tension detector detects that the sum of the tension values ​​of the oxygen lance's wire rope exceeds a predetermined value, the controller can automatically activate the output ends of the two telescopic mechanisms to retract, so that the two supports are far apart from each other, avoiding excessive resistance between the scraper and the oxygen lance, which could lead to deformation of the scraper and oxygen lance or breakage of the wire rope.

[0022] The beneficial effects of this utility model are as follows:

[0023] It has low cost, simple and reliable structure, and is easy to operate. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a front view structural schematic diagram of an oxygen lance scraping device according to a specific embodiment of the present utility model;

[0026] Figure 2 This is a top view of an oxygen lance scraping device according to a specific embodiment of the present invention.

[0027] List of components and reference numerals:

[0028] 1. Crossbeam; 11. First support; 12. Second support; 13. Third support; 14. Fourth support; 15. Fifth support; 16. Sixth support; 2. Support; 3. Scraper; 4. Connecting rod; 5. Telescopic mechanism. Detailed Implementation

[0029] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0030] Reference Figure 1-2 This embodiment proposes an oxygen lance scraping device, which includes a crossbeam 1. The crossbeam 1 includes a first support 11 and a second support 12. The first support 11 and the second support 12 are arranged in parallel. A third support 13 and a fourth support 14 are connected between the first support 11 and the second support 12. The third support 13 and the fourth support 14 form a channel for the oxygen lance to pass through. Each side of the channel is hinged to a support 2. One support 2 is hinged to the third support 13, and the other support 2 is hinged to the fourth support 14. Two scrapers 3 are fixedly connected to the side of each support 2 near the channel. All the scrapers 3 on the two supports 2 are arranged along the circumferential direction of the oxygen lance. A connecting rod 4 is connected between the two supports 2. Each end of the connecting rod 4 is rotatably connected to the hinge axis between one support 2 and the crossbeam 1. A fifth support 15 and a sixth support 16 are connected between the first support 11 and the second support 12. The fifth support 15 is located on the side of the third support 13 away from the fourth support 14, and the sixth support 16 is located on the side of the fourth support 14 away from the third support 13. One telescopic mechanism 5 is hinged to the fifth support 15, and the other telescopic mechanism 5 is hinged to the sixth support 16. The telescopic mechanism 5 is a cylinder or a hydraulic cylinder. The telescopic mechanism 5 is hinged to the crossbeam 1, and the output end of each telescopic mechanism 5 is hinged to the nearest support 2. The telescopic mechanism 5 can drive the support 2 to rotate around the hinge axis between the support 2 and the crossbeam 1, so that the two supports 2 can move closer to each other and further away. This embodiment also includes a tension value detector, which is installed on the steel wire rope of the oxygen lance. The tension value detector is electrically connected to a controller, and the controller is electrically connected to the two telescopic mechanisms 5 respectively.

[0031] To clearly illustrate the structure of this embodiment, Figure 1 and Figure 2 One telescopic mechanism is omitted in the middle.

[0032] The working principle of this embodiment is as follows: The two telescopic mechanisms 5 drive the two supports 2 to move closer together, so that when the oxygen lance passes through the channel, the two supports can hold the oxygen lance in place. The scraper 3 presses against the outer wall of the oxygen lance, causing the oxygen lance to rise. The scraper 3 can then scrape off the steel slag on the outer wall of the oxygen lance, thus cleaning the steel slag from the outer wall. Conversely, the two telescopic mechanisms 5 drive the two supports 2 to move further apart, releasing the supports 2 from the oxygen lance and facilitating its passage.

[0033] During the slag cleaning process, when the tension detector detects that the sum of the tension values ​​of the oxygen lance's wire rope exceeds a predetermined value, such as 5600 kg, the controller can automatically activate the output ends of the two telescopic mechanisms 5 to retract, so that the two supports 2 are far apart from each other, avoiding excessive resistance between the scraper 3 and the oxygen lance, which could lead to deformation of the scraper 3 and the oxygen lance or breakage of the wire rope.

[0034] In this embodiment, the extension and retraction of the output end of the telescopic mechanism 5 can be controlled remotely.

[0035] In this embodiment, two scrapers 3 are fixedly connected to each support 2. In other embodiments, the number of scrapers 3 on each support 2 is not limited, such as three, four, or five.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oxygen lance scraping device, comprising a crossbeam (1), characterized in that, A channel for the oxygen lance is provided on the crossbeam (1). The channel is hinged to a support (2) on each side. A scraper (3) is fixedly connected to the side of each support (2) near the channel. All scrapers (3) on the two supports (2) are arranged along the circumferential direction of the oxygen lance. Both supports (2) can rotate around the hinge axis between the support (2) and the crossbeam (1) to move closer to each other and further away from each other. Each support (2) is provided with a telescopic mechanism (5) on the side away from the passage. The telescopic mechanism (5) is hinged to the crossbeam (1). The output end of each telescopic mechanism (5) is hinged to the support (2) that is closer to it. The telescopic mechanism (5) can drive the support (2) to rotate around the hinge axis between the support (2) and the crossbeam (1). It also includes a tension value detector, which is installed on the steel wire rope of the oxygen lance; the tension value detector is electrically connected to the controller, and the controller is electrically connected to the two telescopic mechanisms (5) respectively.

2. The oxygen lance scraping device according to claim 1, characterized in that, The telescopic mechanism (5) is a pneumatic cylinder or a hydraulic cylinder.

3. The oxygen lance scraping device according to claim 1, characterized in that, A connecting rod (4) is connected between the two supports (2), and each end of the connecting rod (4) is rotatably connected to the hinge axis of a support (2) and a beam (1).

4. The oxygen lance scraping device according to claim 1, characterized in that, The crossbeam (1) includes a first support (11) and a second support (12). The first support (11) and the second support (12) are arranged in parallel. A third support (13) and a fourth support (14) are connected between the first support (11) and the second support (12). A channel is formed between the third support (13) and the fourth support (14). One support (2) is hinged to the third support (13), and the other support (2) is hinged to the fourth support (14).

5. The oxygen lance scraping device according to claim 1, characterized in that, A fifth bracket (15) and a sixth bracket (16) are connected between the first bracket (11) and the second bracket (12). The fifth bracket (15) is located on the side of the third bracket (13) away from the fourth bracket (14), and the sixth bracket (16) is located on the side of the fourth bracket (14) away from the third bracket (13). A telescopic mechanism (5) is hinged to the fifth bracket (15), and another telescopic mechanism (5) is hinged to the sixth bracket (16).

6. The oxygen lance scraping device according to claim 1, characterized in that, Several scrapers (3) are fixedly connected to each support (2).

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