A vertical protective structure for the furnace mouth of a casting aluminum alloy melting furnace for low-energy melting technology

Abstract

This utility model discloses a vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace using low-energy melting technology, relating to the field of furnace opening column technology. It includes protective components symmetrically arranged on opposite inner walls within the furnace opening. Each protective component includes a connecting column, which is fixedly connected to the inner wall of the furnace opening. A vertical column is fixedly connected to the end of the connecting column facing away from the inner wall of the furnace opening. A first arc surface is formed at the end of the vertical column away from the connecting column. Second arc surfaces are smoothly connected to both sides of the first arc surface, located on both sides of the connecting column, and smoothly connected to the inner wall of the furnace opening. This utility model, through the first arc surface on the vertical column and the second arc surfaces on both sides of the connecting column, allows the slag scraper to effectively move smoothly along the inner wall of the furnace opening, the second arc surface, and the first arc surface during material pushing and ash removal operations. This prevents the slag scraper from bumping against the refractory material on the vertical column, effectively extending the service life of the furnace opening and reducing maintenance frequency.

Description

Technical Field

[0001] This utility model relates to the field of furnace mouth support column technology, and in particular to a vertical protective structure for the furnace mouth of a cast aluminum alloy melting furnace for low-energy melting technology. Background Technology

[0002] Refer to the accompanying drawings in the instruction manual. Figure 3 Traditional aluminum alloy melting furnaces typically have rectangular columns on both sides of the furnace opening, perpendicular to the inner wall of the opening. When workers are stacking materials or removing ash, they use a long slag-removing spoon to reach into the furnace opening. During this process, materials or slag easily accumulate at the connection between the inner wall of the furnace opening and the column. The slag-removing spoon can easily hit the sharp corners of the column, causing the castable refractory to fall off in one piece. This accelerates the refractory loss around the column, shortens the furnace opening's service life, increases maintenance frequency, and raises maintenance costs.

[0003] Therefore, there is an urgent need for a vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology. When pushing material and removing ash with a slag scraper, the slag scraper can effectively and smoothly move along the inner wall of the furnace opening to the outer wall of the column, so that the slag scraper will not bump the refractory material of the column. This can effectively extend the service life of the furnace opening, reduce the frequency of maintenance, and reduce maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology, including protective components symmetrically arranged on opposite inner walls inside the furnace opening. Each protective component includes a connecting column, which is fixedly connected to the inner wall inside the furnace opening. A vertical column is fixedly connected to one end of the connecting column away from the inner wall of the furnace opening. A first arc surface is formed at one end of the vertical column away from the connecting column. Second arc surfaces are smoothly connected to both sides of the first arc surface. The second arc surfaces are formed on both sides of the connecting column and are smoothly connected to the inner wall of the furnace opening.

[0006] Preferably, the column is arranged in the form of a semi-elliptical cylinder.

[0007] Preferably, the width of the side of the column facing the connecting column is adapted to the length of the major axis of the semi-ellipse of the column.

[0008] Preferably, the first arc surface is an outer circular arc.

[0009] Preferably, the eccentricity of the semi-ellipse of the column is close to the value of 1.

[0010] Preferably, the cross-section of the connecting column is an isosceles trapezoid.

[0011] Preferably, the length of the upper base of the connecting post is less than the length of the lower base.

[0012] Preferably, the upper bottom of the connecting column faces the upright column.

[0013] Preferably, the second arc surface is an inner arc and is formed on the side of the connecting column waistline.

[0014] Preferably, the angle between the second arc surface and the inner wall of the furnace opening is greater than 90 degrees and less than 180 degrees.

[0015] The present invention discloses the following technical effects:

[0016] This utility model, through the first arc surface opened on the column and the second arc surface opened on both sides of the connecting column, enables the slag scraper to move smoothly along the inner wall of the furnace opening, the second arc surface and the first arc surface during the pushing and ash scraping operations. This prevents the slag scraper from bumping or hitting the refractory material of the column, effectively extending the service life of the furnace opening, reducing the frequency of maintenance and reducing maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0018] Figure 1 This is a schematic diagram of the top sectional view of the furnace opening of this utility model;

[0019] Figure 2 This is a schematic diagram of the protective component structure of this utility model;

[0020] Figure 3 A top-section view of the existing column structure installed inside the furnace opening;

[0021] Among them, 1. melting furnace; 2. furnace opening; 3. column; 4. connecting column; 5. first arc surface; 6. second arc surface. Detailed Implementation

[0022] 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.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-2 This utility model discloses a vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology. It includes protective components symmetrically arranged on opposite inner walls of the furnace opening 2 of the melting furnace 1. The protective components include a connecting column 4, which is fixedly connected to the inner wall of the furnace opening 2. A column 3 is fixedly connected to one end of the connecting column 4 away from the inner wall of the furnace opening 2. A first arc surface 5 is provided at one end of the column 3 away from the connecting column 4. A second arc surface 6 is smoothly connected to both sides of the first arc surface 5. The second arc surface 6 is provided on both sides of the connecting column 4 and is smoothly connected to the inner wall of the furnace opening 2.

[0025] A melting furnace is a high-temperature industrial device used to heat solid materials to a molten state. It is widely used in metallurgy, casting, chemical industry, glass manufacturing, electronic material processing and other fields.

[0026] A melting furnace typically consists of the following core components:

[0027] Furnace body: The main body is composed of refractory material lining and steel structure shell, which can withstand high temperature and mechanical load.

[0028] Furnace opening (iron tapping / slag tapping): An opening used to discharge molten metal or slag, which must be resistant to high-temperature erosion.

[0029] Combustion / heating system: fuel nozzle (gas / oil furnace), electrode (electric arc furnace) or induction coil (induction furnace).

[0030] Smoke exhaust system: flue, dust removal device, used for waste gas treatment.

[0031] Support structure: furnace base, tilting mechanism (tilting furnace), etc.

[0032] Columns: The inner wall of furnace opening 2 is usually provided with a vertical support structure made of multiple layers of refractory bricks, which is called "columns".

[0033] The columns can reinforce the furnace opening, resist high-temperature expansion and molten erosion, and prevent furnace opening deformation; the columns have fire-resistant protection, which can extend the service life of the furnace lining and reduce the frequency of maintenance; at the same time, the columns can also guide the flow of the molten material, improve heat distribution or charging efficiency.

[0034] This utility model, through the first arc surface 5 on the column 3 and the second arc surface 6 on both sides of the connecting column 4, enables the slag scraper to move smoothly along the inner wall of the furnace opening 2, the second arc surface 6, and the first arc surface 5 during the pushing and ash scraping operations. This prevents the slag scraper from bumping into the refractory material of the column 3, effectively extending the service life of the furnace opening 2, reducing the frequency of maintenance, and reducing maintenance costs.

[0035] The design was further optimized, with column 3 now arranged as a semi-elliptical cylinder. This semi-elliptical cylinder arrangement allows the slag scraper to move effectively along column 3, effectively preventing the slag scraper from bumping against the refractory material of column 3.

[0036] The design is further optimized so that the width of the side of column 3 facing the connecting column 4 is matched with the length of the major axis of the semi-ellipse of column 3. This allows for a smooth transition between the first arc surface 5 and the second arc surface 6, enabling the slag scraper to move smoothly along both arc surfaces 5 and 6.

[0037] The design was further optimized so that the first arc surface 5 is an outer arc. That is, the end of the column 3 away from the connecting column 4 is convex, so that the slag scraper can move smoothly and effectively along the first arc surface 5.

[0038] Further optimization of the design resulted in the eccentricity of the semi-ellipse of column 3 approaching a value of 1. By making the eccentricity of the semi-ellipse of column 3 approach a value of 1, the semi-ellipse becomes nearly flat, allowing the slag scraper to move smoothly and effectively along the first arc surface 5.

[0039] Further optimization of the design involves setting the cross-section of the connecting column 4 into an isosceles trapezoid. By setting the cross-section of the connecting column 4 into an isosceles trapezoid, the second arc surface 6 can effectively and smoothly transition with the first arc surface 5 and the inner wall of the furnace opening 2, allowing the slag scraper to move smoothly along the inner wall of the furnace opening 2, the second arc surface 6, and the first arc surface 5.

[0040] The design was further optimized so that the length of the upper base of connecting column 4 is less than the length of the lower base.

[0041] The design was further optimized by connecting the top of column 4 with the facing column 3.

[0042] That is, the contact area between the connecting column 4 and the inner wall of the furnace opening 2 is greater than the contact area between the connecting column 4 and the column 3, so that the two ends of the second arc surface 6 can effectively and smoothly transition with the inner wall of the furnace opening 2 and the first arc surface 5, and the slag scraper can effectively and smoothly move along the inner wall of the furnace opening 2, the second arc surface 6, and the first arc surface 5.

[0043] The design is further optimized so that the second arc surface 6 is an inner arc and is located on the side of the waistline of the connecting column 4. By making the second arc surface 6 an inner arc and located on the side of the waistline of the connecting column 4, the two ends of the second arc surface 6 can effectively and smoothly transition with the inner wall of the furnace opening 2 and the first arc surface 5, so that the slag scraper can effectively and smoothly move along the inner wall of the furnace opening 2, the second arc surface 6, and the first arc surface 5.

[0044] The design was further optimized so that the angle between the second arc surface 6 and the inner wall of the furnace opening 2 is greater than 90 degrees and less than 180 degrees. This allows for a smooth transition between the second arc surface 6 and the inner wall of the furnace opening 2, enabling the slag skimmer to move smoothly along the inner wall of the furnace opening 2 and the second arc surface 6.

[0045] Working process: During the material stacking operation, the slag scraper moves along the second arc surface 6 facing the furnace opening 2 to the first arc surface 5, and pushes the material through the first arc surface 5, so that the material is inside the furnace opening 2. The slag scraper can move smoothly along the first arc surface 5 and the second arc surface 6, which effectively avoids the slag scraper from bumping into the column 3, effectively extends the service life of the furnace opening 2, reduces the frequency of maintenance, and effectively reduces maintenance costs.

[0046] During ash removal operations, the slag scraper can move smoothly along the side wall of the furnace opening 2 to the second arc surface 6, and through the second arc surface 6, it can smoothly move to the first arc surface 5. This allows the slag scraper to move smoothly along the first and second arc surfaces 5 and 6 during ash removal operations, effectively preventing the slag scraper from bumping into the column 3, effectively extending the service life of the furnace opening 2, reducing maintenance frequency, and effectively reducing maintenance costs.

[0047] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology, characterized in that: The protective components are symmetrically arranged on the inner wall of the furnace opening (2) of the melting furnace (1). The protective components include a connecting column (4), which is fixedly connected to the inner wall of the furnace opening (2). A column (3) is fixedly connected to one end of the connecting column (4) away from the inner wall of the furnace opening (2). A first arc surface (5) is provided on one end of the column (3) away from the connecting column (4). A second arc surface (6) is smoothly connected to both sides of the first arc surface (5). The second arc surface (6) is provided on both sides of the connecting column (4). The second arc surface (6) is smoothly connected to the inner wall of the furnace opening (2).

2. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 1, characterized in that: The column (3) is set in the shape of a semi-elliptical cylinder.

3. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 1, characterized in that: The width of the side of the column (3) facing the connecting column (4) is adapted to the length of the major axis of the semi-ellipse of the column (3).

4. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 1, characterized in that: The first arc surface (5) is an outer circular arc.

5. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 4, characterized in that: The eccentricity of the semi-ellipse of the column (3) is close to the value of 1.

6. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 1, characterized in that: The cross-section of the connecting column (4) is an isosceles trapezoid.

7. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 6, characterized in that: The length of the upper base of the connecting column (4) is less than the length of the lower base.

8. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 7, characterized in that: The upper bottom of the connecting column (4) faces the column (3).

9. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 7, characterized in that: The second arc surface (6) is an inner arc and is opened on the side of the waistline of the connecting column (4).

10. The vertical protective structure for the furnace opening of a casting aluminum alloy melting furnace for low-energy melting technology according to claim 7, characterized in that: The angle between the second arc surface (6) and the inner wall of the furnace opening (2) is greater than 90 degrees and less than 180 degrees.

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