Converter oxygen lance slag scraping device

Abstract

A converter oxygen lance slag scraping device comprises a base platform, at least two sets of telescopic slag receiving assemblies and telescopic slag scraping assemblies, the telescopic slag receiving assemblies and the telescopic slag scraping assemblies are installed on the base platform in a hinged mode, the slag receiving assemblies are horizontally arranged, and the slag scraping assemblies are obliquely arranged upwards; wherein the telescopic slag receiving assembly comprises a horizontally arranged slag receiving hydraulic cylinder, a piston rod of the slag receiving hydraulic cylinder is connected with a slag receiving disc, and the slag receiving disc is driven by the slag receiving hydraulic cylinder to extend to the lower part of the oxygen lance; the telescopic slag scraping assembly comprises a slag scraping hydraulic cylinder which is obliquely arranged upwards, and a cylinder body of the slag scraping hydraulic cylinder is installed on the base platform in a sliding mode through a sliding connecting rod; a piston rod of the slag scraping hydraulic cylinder is connected with a slag scraping panel, the section of the slag scraping panel is consistent with the outer wall of the oxygen lance in shape, and the slag scraping panel is driven by the slag scraping hydraulic cylinder to move towards the outer wall of the oxygen lance and is attached to the outer wall of the oxygen lance. According to the slag scraping device for the converter oxygen lance, the working efficiency, thoroughness and stability of the slag scraping device for the converter oxygen lance are improved, the production efficiency is improved, the maintenance cost is reduced, and remarkable economic and social benefits are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of converter steelmaking, and particularly relates to a converter oxygen lance slag scraping device. Background Technique

[0002] In the process of converter steelmaking in the iron and steel metallurgy industry, the converter oxygen lance is one of the core equipment. It blows high-pressure oxygen into the converter to accelerate the chemical reaction between the molten iron and scrap steel in the furnace, promote the separation of steel slag, and thus improve the steelmaking efficiency and the quality of molten steel. However, after each blowing, a large amount of steel slag often adheres to the surface of the oxygen lance body and the oxygen lance nozzle. The accumulation of these steel slags not only increases the weight of the oxygen lance, affects its operation flexibility and positioning accuracy, but also may cause blockage of the oxygen lance nozzle, seriously affecting the blowing effect of oxygen and the subsequent production process.

[0003] Traditionally, the cleaning of steel slag on the oxygen lance mainly relies on manual operation, which has many disadvantages. First of all, manual cleaning has a high labor intensity and low efficiency, and it is difficult to meet the high-efficiency and continuous requirements of modern steelmaking production. Secondly, there are safety hazards during the manual cleaning process, and workers may be injured due to improper operation or splashing of steel slag. In addition, it is difficult to ensure the thoroughness and consistency of cleaning during manual cleaning, and it is easy to leave dead corners, resulting in incomplete removal of steel slag.

[0004] With the continuous progress of steelmaking technology and the increasing requirements for production efficiency, some mechanical slag scraping devices have emerged on the market. However, most of the existing mechanical slag scraping devices have problems such as poor adaptability, unsatisfactory slag scraping effect, complex equipment structure, high maintenance cost, and possible damage to the surface of the oxygen lance. Therefore, it has become an urgent need to develop an automatic, high-efficiency and adaptable converter oxygen lance slag scraping device. Content of the Utility Model

[0005] Aiming at the problems existing in the prior art, the utility model provides a converter oxygen lance slag scraping device.

[0006] The utility model is realized as follows: a converter oxygen lance slag scraping device includes a base platform, and at least two sets of telescopic slag receiving components and telescopic slag scraping components are hinged on the base platform. The slag receiving components are horizontally arranged, and the slag scraping components are inclined upward. Among them, the telescopic slag receiving component includes a horizontally arranged hydraulic cylinder, the piston rod of the hydraulic cylinder is connected to a slag receiving tray, and the slag receiving tray extends to the lower part of the oxygen lance driven by the hydraulic cylinder. The telescopic slag scraping component includes a slag scraping hydraulic cylinder arranged inclined upward, the cylinder body of the slag scraping hydraulic cylinder is installed on the base platform through a sliding connecting rod, and the lower end of the sliding connecting rod is slidably installed on the base platform. The piston rod of the slag scraping hydraulic cylinder is connected to a slag scraping panel, and the cross section of the slag scraping panel is consistent with the outer wall shape of the oxygen lance. The slag scraping panel moves towards the outer wall of the oxygen lance driven by the slag scraping hydraulic cylinder and fits with the outer wall of the oxygen lance.

[0007] Further preferably, at least one layer of slag scraping reverse cones is provided along the arc direction on the inner wall of the slag scraping panel.

[0008] Further preferably, two or more layers of slag scraping reverse cones are provided along the circumferential direction on the inner wall of the slag scraping panel, and the slag scraping reverse cones of adjacent layers are arranged staggeredly.

[0009] Further preferably, a jet pipe is provided above each layer of slag scraping reverse cones, and jet openings inclined towards the oxygen lance are provided on the jet pipe.

[0010] Further preferably, a T-shaped slider is provided at the lower end of the sliding connecting rod, and a T-shaped sliding groove matching with the T-shaped slider is provided on the base platform.

[0011] The advantages and technical effects of the present utility model are as follows: The present utility model provides an efficient slag scraping device for a converter oxygen lance, the core of which lies in the combination of a stable base platform, a telescopic slag receiving and scraping assembly, and a series of optimized slag scraping panels and auxiliary components. Through the carefully designed slag scraping panel, the cross-section of which closely matches the outer wall shape of the oxygen lance, the slag scraping process is ensured to be efficient and thorough. In particular, the slag scraping reverse cones provided on the inner wall of the slag scraping panel are not only distributed along the arc direction but also arranged in multiple layers in a staggered manner, greatly increasing the contact area and force of slag scraping and effectively removing the stubborn steel slag on the oxygen lance body.

[0012] In addition, the innovative design of the jet pipe in the device performs blowing simultaneously during the slag scraping process, accelerating the shedding of the steel slag and accurately guiding it to fall into the slag receiving tray, significantly reducing the residue of the steel slag around the oxygen lance and keeping the working environment clean. The cooperation of the sliding connecting rod with the T-shaped slider and the sliding groove endows the slag scraping assembly with high flexibility and adaptability, making the slag scraping operation smoother and also enhancing the overall structural strength of the device.

[0013] The ingenious design of the telescopic slag receiving assembly ensures that the slag receiving tray can receive the scraped steel slag in a timely and accurate manner, avoiding the pollution of the environment around the oxygen lance by the steel slag. After the slag scraping is completed, the whole device can quickly reset and carry out necessary inspections and maintenance, making full preparations for the next use.

[0014] In summary, through a series of elaborate designs and optimizations, the present utility model significantly improves the working efficiency, thoroughness and stability of the slag scraping device for the converter oxygen lance, provides strong technical support for the maintenance of the oxygen lance in the steel production process, helps to improve the production efficiency, reduce the maintenance cost, and has remarkable economic and social benefits. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the slag scraping panel of the present utility model;

[0017] Figure 3 It is a schematic structural diagram of the cooperation between the T-shaped slider and the T-shaped chute.

[0018] In the figure, 1 is the base platform; 1-1 is the T-shaped slider; 1-2 is the T-shaped chute; 2 is the telescopic slag receiving assembly; 2-1 is the slag receiving hydraulic cylinder; 2-2 is the slag receiving tray; 3 is the telescopic slag scraping assembly; 3-1 is the slag scraping hydraulic cylinder; 3-2 is the sliding connecting rod; 3-3 is the slag scraping panel; 3-4 is the slag scraping deflector cone; 3-5 is the air jet pipe. Specific embodiments

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Please refer to Figures 1 to 3 , a converter oxygen lance slag scraping device, including a base platform 1, which provides a stable support foundation to ensure the stability of the overall structure of the device; at least two sets of telescopic slag receiving assemblies 2 and telescopic slag scraping assemblies 3 are hinged on the base platform. The slag receiving assembly is horizontally arranged, and the slag scraping assembly is inclined upward; among them, the telescopic slag receiving assembly 2 includes a horizontally arranged slag receiving hydraulic cylinder 2-1, and the piston rod of the slag receiving hydraulic cylinder is connected to the slag receiving tray 2-2, directly receiving the scraped steel slag to keep the environment around the oxygen lance clean; the slag receiving tray extends to the lower part of the oxygen lance driven by the slag receiving hydraulic cylinder; the telescopic slag scraping assembly 3 includes a slag scraping hydraulic cylinder 3-1 arranged inclined upward, and the cylinder body of the slag scraping hydraulic cylinder is installed on the base platform through a sliding connecting rod 3-2. The lower end of the sliding connecting rod is slidably installed on the base platform to increase the flexibility and adaptability of the slag scraping assembly; the piston rod of the slag scraping hydraulic cylinder is connected to the slag scraping panel 3-3, and the cross section of the slag scraping panel is the same as the outer wall shape of the oxygen lance to ensure close fit with the outer wall of the oxygen lance during the slag scraping process and improve the slag scraping efficiency; the slag scraping panel moves towards the outer wall of the oxygen lance and fits with the outer wall of the oxygen lance under the drive of the slag scraping hydraulic cylinder. The setting of at least two sets of telescopic slag receiving assemblies 2 and telescopic slag scraping assemblies 3 ensures that the slag scraping panel 3-3 can insulate the oxygen lance, the slag scraping panel 3-3 can receive slag comprehensively, and does not affect the up and down movement and maintenance operation of the oxygen lance.

[0021] Further preferably, at least one layer of slag scraping deflector cone is arranged along the arc direction on the inner wall of the slag scraping panel. The design of the slag scraping deflector cone can more effectively scrape the steel slag adhered to the oxygen lance body. Especially the slag scraping deflector cone arranged along the arc direction can fit the outer wall shape of the oxygen lance and improve the efficiency and thoroughness of slag scraping.

[0022] Further preferably, two or more layers of slag scraping inclined cones 3-4 are arranged along the circumferential direction on the inner wall of the slag scraping panel, and the slag scraping inclined cones of adjacent layers are arranged staggeredly. The slag scraping inclined cones arranged in multiple layers and staggeredly can further increase the contact area and scraping force of slag scraping, ensuring that the steel slag on the oxygen lance body is removed more thoroughly. At the same time, the staggered arrangement can also avoid blind spots during the slag scraping process and improve the uniformity of slag scraping.

[0023] Further preferably, an air injection pipe 3-5 is provided at the upper part of each layer of slag scraping inclined cone, and an air injection port inclined towards the oxygen lance is provided on the air injection pipe. The setting of the air injection pipe can blow the fallen steel slag during the slag scraping process, accelerate its detachment from the surface of the oxygen lance, and guide the steel slag to accurately fall into the slag receiving tray. The inclined air injection port can ensure that the air flow directly blows towards the oxygen lance direction, improve the blowing effect, and reduce the residue of steel slag around the oxygen lance.

[0024] Further preferably, a T-shaped slider 1-1 is provided at the lower end of the sliding connecting rod, and a T-shaped sliding groove 1-2 matched with the T-shaped slider is provided on the base platform. The matching design of the T-shaped slider and the T-shaped sliding groove increases the stability and flexibility of the sliding connecting rod, enabling the slag scraping panel to move and adjust its position more smoothly during the slag scraping process. This design also improves the overall structural strength of the device, ensuring the stability and reliability of the slag scraping operation.

[0025] Usage method of the utility model:

[0026] Preliminary preparation:

[0027] Ensure that the base platform 1 is firmly installed at the designated position to provide a solid support for the entire slag scraping device.

[0028] Check whether all hydraulic cylinders, sliding connecting rods 3-2, slag scraping panels 3-3 and slag receiving trays 2-2 are in good condition to ensure no damage or jamming.

[0029] According to the outer wall shape of the oxygen lance, adjust the position and angle of the slag scraping panel 3-3 to make it closely fit the outer wall of the oxygen lance.

[0030] Start the slag scraping device:

[0031] Start the control system of the slag scraping device to make the slag receiving hydraulic cylinder 2-1 and the slag scraping hydraulic cylinder 3-1 in a standby state.

[0032] According to actual needs, adjust the number of layers and staggered arrangement of the slag scraping inclined cones on the inner wall of the slag scraping panel to ensure the best slag scraping effect.

[0033] The oxygen lance is lifted synchronously with slag scraping:

[0034] When the blowing is finished, slowly lift the oxygen lance. During this process, start the slag receiving hydraulic cylinder 2-1 and the slag scraping hydraulic cylinder 3-1 synchronously through the control system.

[0035] The slag receiving tray 2-2 extends to the lower part of the oxygen lance driven by the slag receiving hydraulic cylinder, ready to receive the scraped steel slag.

[0036] The slag scraping panel 3-3 moves towards the outer wall of the oxygen lance driven by the slag scraping hydraulic cylinder and closely fits with the outer wall of the oxygen lance, starting the slag scraping operation.

[0037] Enhanced slag scraping and purging:

[0038] Utilize the slag scraping reverse cone on the inner wall of the slag scraping panel to effectively scrape the steel slag on the oxygen lance body. The multi-layer staggered slag scraping reverse cones can more thoroughly remove the steel slag.

[0039] At the same time, the air jet nozzles on the air jet pipe are inclined towards the oxygen lance to purge the fallen steel slag, accelerate its detachment from the surface of the oxygen lance, and guide the steel slag to accurately fall into the slag receiving tray.

[0040] Dynamic adjustment and adaptation:

[0041] During the slag scraping process, according to the adhesion situation of the steel slag on the oxygen lance and the slag scraping effect, dynamically adjust the sliding position of the sliding connecting rod 3-2 on the base platform to dynamically adjust the position and angle of the slag scraping panel 3-3.

[0042] The cooperation design of the T-shaped slider and the T-shaped chute ensures the stability and flexibility of the sliding connecting rod, making the slag scraping operation smoother.

[0043] Slag receiving and cleaning:

[0044] The slag receiving tray 2-2 timely receives and collects the scraped steel slag to keep the environment around the oxygen lance clean.

[0045] After the oxygen lance is completely lifted out, clean the slag receiving tray and prepare for the next use. At the same time, check whether components such as the slag scraping panel and the air jet pipe need to be cleaned or maintained.

[0046] Device reset and inspection:

[0047] After the slag scraping operation is completed, reset all the hydraulic cylinders, sliding connecting rods and slag scraping panels to their initial states.

[0048] Conduct necessary inspections and maintenance on the entire slag scraping device to ensure that the device is in good standby condition and prepare for the next use.

[0049] Through the above optimized usage method, the utility model can more efficiently remove the steel slag on the oxygen lance body, improve production efficiency, and at the same time reduce the failures and downtime caused by the blockage of the oxygen lance nozzle by steel slag. In addition, the flexibility and adaptability of the device have also been significantly improved, providing a wider applicable range for different types of oxygen lances.

[0050] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A slag scraping device for a converter oxygen lance, comprising a base platform, characterized in that: At least two sets of telescopic slag receiving components and telescopic slag scraping components are hinged and installed on the base platform. The slag receiving components are horizontally arranged, and the slag scraping components are arranged obliquely upward. The telescopic slag receiving component includes a horizontally arranged slag receiving hydraulic cylinder, the piston rod of the slag receiving hydraulic cylinder is connected to the slag receiving tray, and the slag receiving tray extends to the lower part of the oxygen lance driven by the slag receiving hydraulic cylinder. The telescopic slag scraping component includes a slag scraping hydraulic cylinder arranged obliquely upward. The cylinder body of the slag scraping hydraulic cylinder is installed on the base platform through a sliding connecting rod, and the lower end of the sliding connecting rod is slidably installed on the base platform. The piston rod of the slag scraping hydraulic cylinder is connected to the slag scraping panel, and the cross section of the slag scraping panel is consistent with the outer wall shape of the oxygen lance. The slag scraping panel moves towards the outer wall of the oxygen lance driven by the slag scraping hydraulic cylinder and fits with the outer wall of the oxygen lance.

2. The converter oxygen lance slag scraping device according to claim 1, characterized in that: At least one layer of slag scraping inverted cones is arranged along the arc direction on the inner wall of the slag scraping panel.

3. The converter oxygen lance slag scraping device according to claim 1, characterized in that: Two or more layers of slag scraping inverted cones are arranged along the circumferential direction on the inner wall of the slag scraping panel, and the adjacent layers of slag scraping inverted cones are arranged staggeredly.

4. The converter oxygen lance slag scraping device according to claim 1, characterized in that: An air spraying pipe is arranged on the upper part of each layer of slag scraping inverted cone, and an air spraying port inclined towards the oxygen lance is arranged on the air spraying pipe.

5. The converter oxygen lance slag scraping device according to claim 1, characterized in that: A T-shaped slider is arranged at the lower end of the sliding connecting rod, and a T-shaped sliding groove matched with the T-shaped slider is arranged on the base platform.

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