Self-cleaning steel ladle air curtain protection device

Abstract

The utility model discloses a self-cleaning steel ladle air curtain protection device which comprises a supporting frame, the inner wall of the supporting frame is fixedly connected with a steel ladle body, the top of the steel ladle body is in lap joint with a steel ladle cover, the top of the steel ladle cover is fixedly connected with a cleaning device, and the outer wall of the supporting frame is fixedly connected with an argon blowing device. The utility model relates to the technical field of steel ladles. According to the self-cleaning steel ladle air curtain protection device, when top blowing is carried out on molten steel in a steel ladle through the argon blowing device, argon can evenly enter the molten steel from the bottom, the phenomenon that argon bubbles are concentrated in a local area is avoided, impurities in the molten steel can be more sufficiently removed through the argon bubbles, and the service life of the molten steel is prolonged. Impurities on the surface of the molten steel can be pushed to the inner wall of the steel ladle through the cleaning device, the impurities on the surface of the molten steel are reduced, when the molten steel is discharged from the bottom of the steel ladle, the impurities on the surface of the molten steel are few, and the argon blowing device is not prone to being blocked.

Description

Technical Field

[0001] This utility model relates to the field of steel ladle technology, specifically a self-cleaning steel ladle air curtain protection device. Background Technology

[0002] A ladle is an important piece of equipment used to hold and transport molten steel in the steelmaking process. It has good high-temperature resistance and corrosion resistance. The shape of a ladle is mostly cylindrical. It is not only used to hold molten steel, but also to adjust the composition and temperature of molten steel during the refining process by means of argon blowing and stirring, so as to ensure the quality of molten steel.

[0003] In the refining process of molten steel, existing ladles generally use either top blowing or bottom blowing. Top blowing produces larger argon bubbles with a faster rising speed, which can cause the argon bubbles to concentrate in localized areas, resulting in poor removal of impurities from the molten steel. Bottom blowing, while removing impurities more effectively, can easily clog the venting elements when the molten steel is discharged from the bottom of the ladle, requiring regular cleaning or replacement and increasing maintenance costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a self-cleaning ladle gas curtain protection device. By using an argon blowing device, argon gas can be evenly introduced into the molten steel from the bottom during argon blowing, effectively carrying impurities to the surface of the molten steel. The cleaning device can scrape the impurities on the surface of the molten steel onto the inner wall of the ladle, reducing the amount of impurities on the surface of the molten steel. When the molten steel is discharged from the bottom, the lack of impurities on the surface makes it difficult to clog the argon blowing device.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a self-cleaning ladle gas curtain protection device, comprising: a support frame, a ladle body fixedly connected to the inner wall of the support frame, a ladle cover overlapping the top of the ladle body, a cleaning device fixedly connected to the top of the ladle cover, an argon blowing device fixedly connected to the outer wall of the support frame, the cleaning device including a motor, a connecting column fixedly connected to the output end of the motor, and a scraper fixedly connected to the outer wall of the connecting column. This device can blow argon gas relatively evenly into the molten steel through the argon blowing device, and the cleaning device can prevent the argon blowing device from being blocked by impurities in the molten steel.

[0008] Preferably, the outer wall of the motor is fixedly connected to the outer wall of the top of the ladle cover, and the output end of the motor passes through the ladle cover. The fixed connection between the motor and the ladle cover provides support for the operation of the cleaning device, and the cleaning device can also be removed by opening the ladle cover, which facilitates the subsequent cleaning of the scraper.

[0009] Preferably, the outer wall of the top of the scraper is slidably connected to the outer wall of the bottom of the ladle cover, and the outer wall of the scraper is slidably connected to the inner wall of the ladle body, which facilitates the scraper pushing impurities on the surface of the molten steel to the surface of the ladle body.

[0010] Preferably, the argon blowing device includes a mounting frame, an argon cylinder is fixedly connected to the inner wall of the mounting frame, a first gas supply pipe is fixedly connected to the top of the argon cylinder, a second gas supply pipe is fixedly connected to the end of the first gas supply pipe away from the first gas supply pipe, and an annular exhaust pipe is fixedly connected to the end of the second gas supply pipe away from the first gas supply pipe. The outer wall of the annular exhaust pipe has an exhaust hole. Through the annular exhaust pipe and the exhaust hole, argon gas can be blown into the molten steel from multiple positions in a relatively uniform manner, avoiding the phenomenon of argon gas bubbles concentrating in a local area.

[0011] The mounting frame is fixedly connected to the outer wall of the support frame, the outer wall of the second gas supply pipe is fixedly connected to the inner wall of the ladle body, and the end of the second gas supply pipe near the first gas supply pipe penetrates the ladle body. The fixed connection between the second gas supply pipe and the inner wall of the ladle body can effectively prevent molten steel from flowing out from the gap between the second gas supply pipe and the ladle body.

[0012] (III) Beneficial Effects

[0013] This invention provides a self-cleaning gas curtain protection device for molten steel ladles. It has the following beneficial effects:

[0014] (I) This self-cleaning ladle gas curtain protection device, through the argon blowing device, allows argon gas to enter the molten steel evenly from the bottom during top blowing of the molten steel inside the ladle. This more thoroughly removes impurities from the molten steel and avoids the phenomenon of argon gas bubbles concentrating in localized areas.

[0015] (ii) The self-cleaning ladle gas curtain protection device can push impurities on the surface of the molten steel onto the inner wall of the ladle through the cleaning device, thereby reducing impurities on the surface of the molten steel and making it less likely for impurities on the surface of the molten steel to clog the argon blowing device when the molten steel is discharged from the bottom of the ladle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the argon blowing device of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the molten steel ladle body of this utility model.

[0020] In the diagram: 1. Support frame; 2. Ladle body; 3. Ladle cover; 4. Cleaning device; 40. Motor; 41. Connecting column; 42. Scraper; 5. Argon blowing device; 50. Mounting frame; 51. Argon cylinder; 52. First gas supply pipe; 53. Second gas supply pipe; 54. Annular exhaust pipe; 55. Exhaust port. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a self-cleaning ladle gas curtain protection device, comprising: a support frame 1, a ladle body 2 fixedly connected to the inner wall of the support frame 1, a ladle cover 3 overlapping the top of the ladle body 2, a cleaning device 4 fixedly connected to the top of the ladle cover 3, and an argon blowing device 5 fixedly connected to the outer wall of the support frame 1; through the argon blowing device 5, argon gas can enter the interior of the molten steel relatively evenly from the bottom, so that the impurities in the molten steel are discharged more fully.

[0023] The cleaning device 4 includes a motor 40, the output end of which is fixedly connected to a connecting column 41, and a scraper 42 is fixedly connected to the outer wall of the connecting column 41. The outer wall of the motor 40 is fixedly connected to the outer wall of the top of the ladle cover 3, and the output end of the motor 40 passes through the ladle cover 3. The outer wall of the top of the scraper 42 is slidably connected to the outer wall of the bottom of the ladle cover 3, and the outer wall of the scraper 42 is slidably connected to the inner wall of the ladle body 2. The scraper 42 can scrape the impurities floating on the surface of the molten steel to the inner wall of the ladle body 2, reducing the impurities floating on the surface of the molten steel. When the molten steel is discharged from the bottom of the ladle body 2, the reduction of impurities on the surface of the molten steel makes the argon blowing device 5 less likely to be blocked.

[0024] The argon blowing device 5 includes a mounting frame 50, an argon cylinder 51 fixedly connected to the inner wall of the mounting frame 50, a first gas supply pipe 52 fixedly connected to the top of the argon cylinder 51, a second gas supply pipe 53 fixedly connected to the end of the first gas supply pipe 52 away from the first gas supply pipe 52, and an annular exhaust pipe 54 fixedly connected to the end of the second gas supply pipe 53 away from the first gas supply pipe 52. An exhaust hole 55 is opened on the outer wall of the annular exhaust pipe 54. The mounting frame 50 is fixedly connected to the outer wall of the support frame 1, and the outer wall of the second gas supply pipe 53 is fixedly connected to the inner wall of the ladle body 2. The end of the second gas supply pipe 53 near the first gas supply pipe 52 penetrates the ladle body 2. Through the annular exhaust pipe 54 and the exhaust hole 55, argon gas can be evenly blown into the interior of the molten steel, avoiding the concentration of argon gas bubbles in local areas and more thoroughly removing impurities inside the molten steel.

[0025] Working principle

[0026] In use, place the support frame 1 on a relatively stable ground, start the argon blowing device 5 to blow argon into the molten steel inside the ladle body 2, so that the argon bubbles carry the impurities inside the molten steel to the surface of the molten steel and make them float. Then start the cleaning device 4, so that the scraper 42 adheres the impurities on the surface of the molten steel to the surface of the scraper 42 or the inner wall of the ladle body 2. After the argon blowing is completed, discharge the molten steel from the nozzle brick. Since the impurities on the surface of the molten steel are pushed to the inner wall of the ladle body 2 by the cleaning device 4, there are fewer impurities on the surface of the molten steel when it is discharged from the bottom of the ladle body 2, which is less likely to cause blockage of the argon blowing device 5. This allows the device to reduce the blockage of internal components while achieving a good argon blowing effect.

[0027] When it is necessary to purge argon into the molten steel inside the ladle body 2, the argon cylinder 51 inside the mounting frame 50 is opened, allowing argon gas to be supplied into the first gas supply pipe 52. The argon gas is then sent to the annular exhaust pipe 54 through the second gas supply pipe 53 and discharged through the exhaust hole 55 inside the annular exhaust pipe 54. This allows the argon gas to enter the molten steel more evenly from multiple directions, avoiding the phenomenon of argon gas bubbles concentrating in a local area. This allows the argon gas bubbles to carry impurities in the molten steel to float to the surface of the molten steel, improving the purity of the molten steel. At the same time, the motor 40 on the top of the ladle cover 3 is started, causing the connecting column 41 to rotate slowly. The rotation of the connecting column 41 will drive the scraper 42 to move. Since one side of the scraper 42 is inclined, when scraping the impurities on the surface of the molten steel, the scraper 42 will scrape the impurities on the surface of the molten steel onto the inner wall of the ladle body 2, reducing the impurities floating on the surface of the molten steel. This makes it less likely for the molten steel to clog the exhaust hole 55 when it is discharged from the nozzle brick.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning steel ladle air curtain protection device, comprising: A support frame (1) is provided, wherein a ladle body (2) is fixedly connected to the inner wall of the support frame (1), characterized in that a ladle cover (3) overlaps the top of the ladle body (2), a cleaning device (4) is fixedly connected to the top of the ladle cover (3), and an argon blowing device (5) is fixedly connected to the outer wall of the support frame (1). The cleaning device (4) includes a motor (40), the output end of which is fixedly connected to a connecting column (41), and a scraper (42) is fixedly connected to the outer wall of the connecting column (41).

2. The self-cleaning ladle air curtain protection device according to claim 1, characterized in that: The outer wall of the motor (40) is fixedly connected to the outer wall of the top of the steel ladle cover (3), and the output end of the motor (40) passes through the steel ladle cover (3).

3. The self-cleaning ladle air curtain protection device according to claim 1, characterized in that: The outer wall of the top of the scraper (42) is slidably connected to the outer wall of the bottom of the ladle cover (3), and the outer wall of the scraper (42) is slidably connected to the inner wall of the ladle body (2).

4. The self-cleaning ladle air curtain protection device according to claim 1, characterized in that: The argon blowing device (5) includes a mounting frame (50), an argon cylinder (51) is fixedly connected to the inner wall of the mounting frame (50), a first gas supply pipe (52) is fixedly connected to the top of the argon cylinder (51), a second gas supply pipe (53) is fixedly connected to the end of the first gas supply pipe (52) away from the first gas supply pipe (52), and an annular exhaust pipe (54) is fixedly connected to the end of the second gas supply pipe (53) away from the first gas supply pipe (52). An exhaust hole (55) is opened on the outer wall of the annular exhaust pipe (54).

5. A self-cleaning ladle air curtain protection device according to claim 4, characterized in that: The mounting bracket (50) is fixedly connected to the outer wall of the support frame (1), the outer wall of the second gas pipe (53) is fixedly connected to the inner wall of the ladle body (2), and the end of the second gas pipe (53) near the first gas pipe (52) penetrates the ladle body (2).

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