Protective device for var furnace crucible cleaning process

Abstract

The utility model relates to vacuum self -consumption furnace equipment field discloses VAR furnace crucible cleaning process's protection device, including hollow support cylinder, support cylinder top end surface is equipped with the positioning flange, the bottom of support cylinder inner wall is uniformly distributed with a plurality of groups for supporting the support seat of furnace crucible, the surface of support seat close to support cylinder axis is support seat inside, the distance of support seat inside to support cylinder axis gradually reduces from support seat upper portion to support seat lower portion, the positioning flange is uniformly distributed with at least two for the positioning assembly of furnace crucible position limiting to provide a kind of protection device that can be to the sufficient support and protection of furnace crucible outer wall pipeline.

Description

Technical Field

[0001] This utility model relates to the field of vacuum arc furnace equipment, specifically to a protective device for the crucible cleaning process of a VAR furnace. Background Technology

[0002] Vacuum consumable electrode arc furnace (VAR furnace) is a core piece of equipment for producing high-end high-temperature alloys and aerospace titanium alloy ingots. Its core component, the water-cooled copper crucible, is subjected to high-temperature electric arc during the melting process. Its inner wall is prone to slag buildup from volatile impurities and a layer of splashed molten metal droplets. After the ingot solidifies, the residual slag on the crucible's inner wall must be thoroughly cleaned to restore surface smoothness and ensure the quality of the next melting cycle. Currently, large-scale industrial VAR furnaces generally use automated cleaning equipment. However, small-scale experimental VAR furnaces on pilot-scale platforms face cleaning challenges due to the following characteristics: especially for thin-walled structures, handling, fixing, and polishing operations can easily cause deformation of copper crucibles. Furthermore, some crucibles with special purposes (such as introducing inert gas to provide a protective atmosphere) have pipelines on their outer walls. Conventional lack of protective fixing mechanisms may lead to damage to the outer wall pipelines. For example, Chinese patent document CN114713429A discloses an automatic crucible spraying and cleaning workstation and implementation method. It is equipped with a flexible connection that can be detachably connected to the crucible opening. The interface of the ground rail facing the docking mechanism is fixed on the floor of the sealed spraying chamber. Two attachment brackets are respectively set on both sides of the ground rail. The attachment brackets support the crucible. However, the above setup does not protect the outer surface of the crucible, which can easily cause damage to the outer wall and affect its functionality during transportation. Utility Model Content

[0003] The present invention aims to provide a protective device for the VAR furnace crucible cleaning process, so as to provide a protective device that can fully support and protect the pipes on the outer wall of the furnace crucible.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a protective device for the VAR furnace crucible cleaning process, comprising a hollow support cylinder, a positioning flange on the top end face of the support cylinder, multiple sets of support seats for supporting the furnace crucible evenly distributed circumferentially on the bottom of the inner wall of the support cylinder, the surface of the support seat near the axis of the support cylinder being the inner side of the support seat, the distance from the inner side of the support seat to the axis of the support cylinder gradually decreasing from the upper part of the support seat to the lower part of the support seat, and at least two positioning components for limiting the furnace crucible evenly distributed circumferentially on the positioning flange.

[0005] The beneficial effects of this plan are: During installation, the furnace crucible is placed into the support cylinder from the top. The support base provides circumferential support to the bottom of the furnace crucible. The distance from the inner side of the support base to the axis of the support cylinder gradually decreases from the upper part of the support base to the lower part of the support base. Multiple support bases form a cone shape to facilitate the alignment of the furnace crucible's axis with the axis of the support cylinder, making it easier to center the furnace crucible and better protect its outer surface. The furnace crucible is limited by a positioning flange and multiple limiting components, and one end of the furnace crucible is limited and fixed to prevent it from shaking and being damaged during transportation.

[0006] Preferably, as an improvement, the positioning components all include a fixed seat fixed on the positioning flange, and each fixed seat is equipped with a positioning block. The positioning blocks are all located on the side of the fixed seat near the axis of the support cylinder, and each positioning block can slide relative to the fixed seat and clamp the support cylinder.

[0007] The beneficial effects are as follows: the positioning block can slide relative to the fixed seat, and can be finely adjusted according to the outer wall size of the furnace crucible of different specifications or different outer diameters to achieve precise clamping and ensure a stable limiting effect. The sliding adjustment function makes the clamping force evenly distributed, avoiding excessive tightness that could cause local pressure damage to the thin-walled copper crucible or auxiliary pipes, thus improving the safety and reliability of the protection device.

[0008] Preferably, as an improvement, it also includes a positioning bolt, the fixing seat has a threaded through hole, the positioning bolt is threadedly connected to the threaded through hole, and the end of the positioning bolt is engaged with the positioning block.

[0009] The beneficial effects are: by rotating the positioning bolts, the position of the positioning block can be precisely controlled, achieving fine clamping and limiting of the outer wall of the crucible, and meeting the installation requirements of furnace crucibles of different sizes.

[0010] Preferably, as an improvement, the inner surface of the support base is a support slope capable of supporting the furnace crucible.

[0011] The beneficial effects are as follows: by setting the support slope, when the furnace crucible is placed into the support cylinder, the axis of the crucible can be automatically aligned with the axis of the support cylinder by the guide of the support slope, which improves the accuracy and convenience of installation and positioning, prevents the crucible from sliding laterally during use, and enhances the stability of the overall structure.

[0012] Preferably, as an improvement, the inner side of the support base is provided with a number of stepped surfaces for supporting the furnace crucible, and the stepped surfaces are all parallel to the radial surface of the support cylinder.

[0013] The beneficial effects are as follows: Compared with a single support slope, the stepped surface provides multiple stepped flat support areas, increases the contact area, makes the furnace crucible more uniformly stressed, reduces local stress concentration, reduces the risk of deformation, and effectively restricts the radial movement of the crucible in the support cylinder, thus improving positioning stability.

[0014] Preferably, as an improvement, multiple lifting rings are evenly distributed circumferentially on the upper surface of the positioning flange.

[0015] The beneficial effects are: the above-mentioned setup facilitates hoisting and transportation, and the multiple lifting rings provide multi-point hanging support, ensuring uniform force distribution during hoisting and avoiding structural deformation or damage due to uneven force distribution.

[0016] Preferably, as an improvement, the number of positioning components is three. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the preferred embodiment of the present invention. Figure 2 This is a schematic diagram of another preferred embodiment of the present invention.

[0018] The reference numerals in the accompanying drawings include: support cylinder 1, positioning flange 2, support base 3, fixed base 4, positioning block 5, positioning bolt 6, support inclined surface 7, lifting ring 8, and stepped surface 9. Detailed Implementation

[0019] The following detailed description is provided through specific implementation methods and examples: The preferred embodiments of this utility model are basically as shown in the appendix. Figure 1-2 As shown, Figure 1 The protective device for the VAR furnace crucible cleaning process shown includes a hollow support cylinder 1, in which the furnace crucible can be placed. A positioning flange 2, which is annular, is provided on the top end face of the support cylinder 1. Multiple sets of support seats 3 for supporting the furnace crucible are evenly distributed circumferentially on the bottom of the inner wall of the support cylinder 1. The surface of the support seat 3 closest to the axis of the support cylinder 1 is the inner side surface of the support seat 3. The distance from the inner side surface of the support seat 3 to the axis of the support cylinder 1 gradually decreases from the upper part to the lower part of the support seat 3. At least two positioning components for limiting the furnace crucible are evenly distributed circumferentially on the positioning flange 2. To achieve better positioning, the preferred embodiment of this invention uses three positioning components. To facilitate the hoisting and transportation of the furnace crucible, the preferred embodiment of this invention also uses multiple lifting rings 8 evenly distributed circumferentially on the upper surface of the positioning flange 2. This arrangement facilitates hoisting and transportation, and the multiple lifting rings 8 provide multi-point support, ensuring uniform force distribution during hoisting and preventing structural deformation or damage due to uneven force. In this preferred embodiment, the number of lifting rings 8 is 3.

[0020] During installation, the furnace crucible is placed into the support cylinder 1 from the top. The support base 3 provides circumferential support to the bottom of the furnace crucible. The distance from the inner side of the support base 3 to the axis of the support cylinder 1 gradually decreases from the upper part of the support base 3 to the lower part of the support base 3. Multiple support bases 3 form a cone-shaped structure to facilitate the alignment of the axis of the furnace crucible with the axis of the support cylinder 1, making it easier to center the furnace crucible and better protect its outer surface. The furnace crucible is limited by the positioning flange 2 and multiple limiting components, and one end of the furnace crucible is limited and fixed to prevent it from shaking and being damaged during transportation.

[0021] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention includes a fixed seat 4 fixed to the positioning flange 2. Each fixed seat 4 is equipped with a positioning block 5, which is located on the side of the fixed seat 4 closest to the axis of the support cylinder 1. The positioning blocks 5 can slide back and forth relative to the fixed seat 4, clamping the support cylinder. This allows for fine-tuning according to the outer wall dimensions of furnace crucibles of different specifications or outer diameters, achieving precise clamping and ensuring a stable limiting effect. The sliding adjustment function ensures even distribution of clamping force, preventing excessive tightness from causing localized damage to the thin-walled copper crucible or auxiliary pipes, thus improving the safety and reliability of the protection device. To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention further includes a positioning bolt 6. The fixing seat 4 has a threaded through hole, and the positioning bolt 6 is threadedly connected to the threaded through hole. The end of the positioning bolt 6 is engaged with the positioning block 5, and the end of the positioning bolt 6 can rotate relative to the positioning block 5. By rotating the positioning bolt 6, the position of the positioning block 5 can be precisely controlled, achieving precise clamping and limiting of the outer wall of the crucible, thus meeting the installation requirements of furnace crucibles of different sizes.

[0022] To ensure structural stability, another preferred embodiment of this invention involves several stepped surfaces 9 spaced apart on the inner side of the support base 3 to support the furnace crucible. These stepped surfaces 9 are all parallel to the radial surface of the support cylinder 1. Compared to a single supporting inclined surface 7, the stepped surfaces 9 provide multiple stepped, flat support areas, increasing the contact area, making the furnace crucible more evenly stressed, reducing local stress concentration, lowering the risk of deformation, and effectively limiting the radial movement of the crucible within the support cylinder 1, thus improving positioning stability. To achieve better centering, such as... Figure 2 As shown, the preferred embodiment of this utility model is that the inner side of the support base 3 is a support slope 7 that can support the furnace crucible. By setting the support slope 7, when the furnace crucible is placed into the support cylinder 1, the axis of the crucible can be automatically aligned with the axis of the support cylinder 1 by the guide of the support slope 7, which improves the accuracy and convenience of installation and positioning, prevents the crucible from sliding laterally during use, and enhances the stability of the overall structure.

[0023] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A protective device for the crucible cleaning process in a VAR furnace, comprising a hollow support cylinder (1), wherein a positioning flange (2) is provided on the top end face of the support cylinder (1), characterized in that: The bottom of the inner wall of the support cylinder (1) is evenly distributed with multiple sets of support seats (3) for supporting the furnace crucible. The surface of the support seat (3) near the axis of the support cylinder (1) is the inner side of the support seat (3). The distance from the inner side of the support seat (3) to the axis of the support cylinder (1) gradually decreases from the upper part of the support seat (3) to the lower part of the support seat (3). The positioning flange (2) is evenly distributed with at least two positioning components for limiting the furnace crucible.

2. The protective device for the VAR furnace crucible cleaning process according to claim 1, characterized in that: The positioning components all include a fixed seat (4) fixed on the positioning flange (2), and a positioning block (5) is installed on the fixed seat (4). The positioning block (5) is located on the side of the fixed seat (4) close to the axis of the support cylinder (1). The positioning block (5) can slide relative to the fixed seat (4) and clamp the support cylinder (1).

3. The protective device for the VAR furnace crucible cleaning process according to claim 2, characterized in that: It also includes a positioning bolt (6), a threaded through hole on the fixing seat (4), the positioning bolt (6) is threadedly connected to the threaded through hole, and the end of the positioning bolt (6) is engaged with the positioning block (5).

4. The protective device for the VAR furnace crucible cleaning process according to claim 1, characterized in that: The inner side of the support base (3) is a support slope (7) that can support the furnace crucible.

5. The protective device for the VAR furnace crucible cleaning process according to claim 1, characterized in that: The inner side of the support base (3) is provided with several stepped surfaces (9) for supporting the furnace crucible, and the stepped surfaces (9) are all parallel to the radial surface of the support cylinder (1).

6. The protective device for the VAR furnace crucible cleaning process according to claim 1, characterized in that: The upper surface of the positioning flange (2) is provided with multiple lifting rings (8) evenly distributed around the circumference.

7. The protective device for the VAR furnace crucible cleaning process according to claim 1, characterized in that: The number of positioning components is three.

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