Steel ladle bottom argon blowing device

Abstract

The utility model provides a ladle bottom argon blowing device which comprises an argon cap wall, a gas inlet, a gravity sealing ball, a flange and a sealing device, the flange is arranged on the upper portion of the sealing device, the gas inlet is formed in the middle of the upper portion of the sealing device, the gravity sealing ball is arranged on the gas inlet and used for sealing gas, and the sealing device is arranged on the flange. The sealing device is made of brass and used for being in contact with an argon head for sealing, and the argon cap wall is arranged on the lower portion of the sealing device and used for alignment of the argon head. By means of the device, good ventilation can be achieved under the state that the argon head on the steel ladle and the argon cap on the steel ladle are not aligned, the good argon blowing effect of molten steel in the steel ladle is guaranteed, the refining requirement of the molten steel is met, the quality and purity of the molten steel are improved, and the influence on production is reduced or eradicated.

Description

Technical Field

[0001] The utility model relates to the technical field of ladles, and in particular to a device for bottom blowing argon into a ladle. Background Art

[0002] Bottom blowing argon into a ladle is an important technology in the iron and steel smelting process. Through the argon head on the ladle car and the argon cap on the ladle, the argon gas is dynamically connected by elastic contact, and the argon gas is blown from the bottom of the ladle to stir the molten steel in the ladle, achieving the purpose of refining the molten steel. It can effectively remove oxides and non-metallic inclusions in the molten steel, achieve the uniformity of the composition and temperature of the molten steel, improve the quality and purity of the molten steel. The LF refining furnace relies on the bottom blowing argon system of the ladle to achieve the functions of desulfurization and temperature raising, and realizes the refining of the molten steel. However, the argon head and the argon cap of the bottom blowing argon device of the ladle often appear misaligned, resulting in poor air permeability and air leakage. If an accident argon lance is forced to be used for steel water treatment, the argon gas volume is not easy to control, which easily affects the treatment effect. At the same time, there is splashing during the treatment. This problem has seriously affected the argon blowing effect of the bottom blowing argon device of the ladle, affected the uniformity of the composition, temperature, etc. of the molten steel in the ladle, and affected the desulfurization effect of the LF refining furnace, etc. It has a greater impact on the control of the production rhythm and the quality of the molten steel, and needs to be further improved and perfected. Summary of the Invention

[0003] According to the problem that the argon head and the argon cap of the bottom blowing argon device of the ladle often appear misaligned during the production process, a device for bottom blowing argon into a ladle is provided. The utility model designs the best structure of the new ladle argon cap device by adopting advanced fluid mechanics simulation technology, ensuring that even when the argon head on the ladle car is not properly seated with the argon cap on the ladle, the argon gas system can still be ensured not to be blocked and there is no air leakage, and the argon gas is completely blown into the molten steel, realizing the precise control of the argon gas blowing volume and blowing time, and meeting the requirements of molten steel refining.

[0004] The technical means adopted by the utility model are as follows:

[0005] A device for bottom blowing argon into a ladle, comprising: an argon cap wall, an air inlet, a gravity sealing ball, a flange, and a sealing device;

[0006] The flange is arranged on the upper part of the sealing device, the air inlet is arranged at the middle position of the upper part of the sealing device, the gravity sealing ball is on the air inlet for sealing the gas, the sealing device is made of brass for contact sealing with the argon head, and the argon cap wall is arranged at the lower part of the sealing device for the alignment of the argon head.

[0007] Furthermore, when the argon head is aligned with the sealing device, they are in contact. There is a sealed space between the top of the argon head and the sealing device, and the connection part does not leak air, enabling the argon gas to enter the air inlet of the sealing device through the air outlet of the argon head.

[0008] Further, when the argon head contacts without being aligned with the sealing device, there is a space between the top of the argon head and the sealing device, and the sealing device contacts with the argon head to form a closed space, so that the argon head and the argon cap are well matched, and the connection part is airtight and leak-free.

[0009] Further, under the action of the argon gas blown out by the argon head, the gravity sealing ball can float upward against gravity, thereby releasing the seal of the air outlet. When the argon head blows out argon gas, the gravity sealing ball falls to the air outlet under the action of gravity to seal the air outlet.

[0010] Due to the adoption of the above technical solutions, compared with the prior art, the present utility model has the following advantages:

[0011] 1. A ladle bottom argon blowing device provided by the present utility model solves the problems of argon gas system blockage and air leakage, improves the argon gas utilization rate, and reduces the production cost.

[0012] 2. A ladle bottom argon blowing device provided by the present utility model improves the quality and purity of molten steel compared with the traditional argon blowing device.

[0013] 3. A ladle bottom argon blowing device provided by the present utility model reduces the operation difficulty and improves the production efficiency compared with the traditional argon blowing device.

[0014] Based on the above reasons, the present utility model can be widely promoted in the technical field of ladles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of a ladle bottom argon blowing device according to the present utility model;

[0017] Figure 2 is a connection diagram of a ladle bottom argon blowing device according to the present utility model and the argon head in a directly facing position;

[0018] Figure 3 is a connection diagram of a ladle bottom argon blowing device according to the present utility model and the argon head without being aligned.

[0019] In the figure: 1. Argon cap wall; 2. Air inlet; 3. Gravity sealing ball; 4. Flange; 5. Sealing device. Detailed implementation mode

[0020] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0022] It should be noted that the terms used herein are only for describing the specific implementation mode and are not intended to limit the exemplary implementation mode of the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0023] Unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps described in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0025] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0026] In addition, it should be noted that the use of words such as "first", "second", etc. to limit the components is only for the convenience of distinguishing the corresponding components. Without additional declaration, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0027] As Figures 1 to 3 shown, a device for bottom blowing argon into a ladle includes: an argon cap wall 1, an air inlet 2, a gravity sealing ball 3, a flange 4, and a sealing device 5;

[0028] The flange 4 is arranged on the upper part of the sealing device 5, the air inlet 2 is arranged at the middle position of the upper part of the sealing device 5, the gravity sealing ball 3 is on the air inlet 2 for sealing the gas, the sealing device 5 is made of brass for contact sealing with the argon head, and the argon cap wall 1 is arranged at the lower part of the sealing device 5 for alignment of the argon head.

[0029] Furthermore, when the argon head is aligned with the sealing device 5, they are in contact. There is a closed space between the top of the argon head and the sealing device 5, and the connection part is airtight, enabling argon to enter the air inlet 2 of the sealing device 5 through the air outlet of the argon head.

[0030] Furthermore, when the argon head contacts without being aligned with the sealing device 5, there is a space between the top of the argon head and the sealing device 5. The sealing device 5 contacts with the argon head to form a sealed space, enabling the argon head to cooperate well with the argon cap, and the connection part is airtight without air leakage.

[0031] Furthermore, under the action of the argon gas blown out by the argon head, the gravity sealing ball 3 can float upward against gravity, thereby releasing the seal of the air outlet. When the argon head blows out argon gas, the gravity sealing ball 3 falls to the air outlet under the action of gravity to seal the air outlet.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An argon bottom-blowing device for a ladle, characterized in that, Including: Argon cap wall, air inlet, gravity sealing ball, flange, sealing device; The flange is arranged above the sealing device, the air inlet is arranged at the middle position above the sealing device, the gravity sealing ball is on the air inlet for sealing the gas, the sealing device is made of brass for contact sealing with the argon head, and the argon cap wall is arranged below the sealing device for alignment of the argon head.

2. The device for bottom blowing argon in a ladle according to claim 1, characterized in that, When the argon head is in alignment with the sealing device, they are in contact. There is a sealed space between the top of the argon head and the sealing device, and the connection part does not leak air, enabling argon to enter the air inlet of the sealing device through the air outlet of the argon head.

3. The device for bottom blowing argon in a ladle according to claim 2, characterized in that, When the argon head is not in alignment with the sealing device, they are in contact. There is a space between the top of the argon head and the sealing device, and the sealing device and the argon head form a sealed space, so that the argon head and the argon cap are well matched, and the connection part is not blocked or leaking air.

4. The device for bottom blowing argon in a ladle according to claim 3, characterized in that, Under the action of the argon gas blown out by the argon head, the gravity sealing ball can float upward against gravity, thus releasing the seal of the air outlet. When the argon head blows out argon gas, the gravity sealing ball falls to the air outlet under the action of gravity to seal the air outlet.

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