A homogenization structure for an oxygen-free copper smelting furnace

Abstract

This utility model discloses a crystallization homogenization structure for an oxygen-free copper smelting furnace, relating to the field of metal metallurgy. It aims to solve the technical problem that the introduction of new material during oxygen-free copper smelting can easily cause localized temperature drops, leading to crystallization defects. The structure includes a shell and a crystallization unit located at the top of the shell. The crystallization unit includes a motor, and a positioning rod is provided at the bottom of the connecting ring. The material plate has insertion holes that mate with the positioning rod. This utility model designs the material plate in conjunction with an inner telescopic support. The fixed end of the inner telescopic support is connected to the positioning support. After the material plate is heated to a certain temperature within the furnace, the moving end of the inner telescopic support retracts, adjusting several material plates to rotate downwards. This causes the material plates to tilt downwards, at which point the heated new material automatically falls into the furnace and mixes with the molten copper, effectively preventing a sudden temperature drop caused by the direct entry of new material into the furnace.

Description

Technical Field

[0001] This utility model relates to the field of metal metallurgy technology, and more specifically, to a crystallization homogenization structure for an oxygen-free copper smelting furnace. Background Technology

[0002] Oxygen-free copper is widely used in high-end fields such as electronics, communications, and vacuum devices due to its ultra-high purity, excellent electrical conductivity, resistance to hydrogen embrittlement, and processing performance. However, during the smelting and solidification process, uneven temperature fields, compositional segregation, or solidification conditions can lead to problems such as coarse grains, uneven dendrite growth, porosity, and inclusion aggregation, directly affecting the performance consistency of the final product. Therefore, the design of the smelting furnace needs to optimize the structure to control the flow, heat transfer, and mass transfer processes of the molten copper, thereby obtaining a uniform and fine equiaxed crystal structure or a controllable columnar crystal structure.

[0003] Oxygen-free copper is prepared by stirring the molten copper in a smelting furnace. This method breaks down temperature stratification and concentration differences, accelerates the homogenization of alloying elements, inhibits the aggregation of impurities (such as oxides and gases), promotes equiaxed crystal nucleation, and reduces columnar crystal growth. However, when feeding new material, contact between the fresh material and the stirred molten copper can cause localized temperature drops, easily leading to thermal anomalies and crystallization defects. Therefore, we propose a crystallization homogenization structure for an oxygen-free copper smelting furnace. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a crystallization homogenization structure for an oxygen-free copper smelting furnace, so as to solve the technical problem that the introduction of new material during the current oxygen-free copper smelting process can easily cause a sudden drop in local temperature, leading to crystallization defects.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a crystallization homogenization structure for an oxygen-free copper smelting furnace, comprising a shell and a crystallization unit located at the top of the shell. The crystallization unit includes a motor, the output end of which is connected to a telescopic frame connecting plate. The bottom of the telescopic frame connecting plate is connected to an inner telescopic bracket. A bracket connecting plate is installed at the bottom of the fixed end of the inner telescopic bracket. A plurality of positioning brackets are connected to the bottom of the bracket connecting plate. A crossbar is installed between the plurality of positioning brackets. A bearing is provided on the crossbar. A material plate is connected to the bearing. A rod connecting ring is connected to the bottom of the moving end of the inner telescopic bracket. A positioning rod is provided at the bottom of the rod connecting ring. An insertion hole that mates with the positioning rod is opened on the material plate.

[0006] Preferably, the outer wall of the motor is connected to a sleeve, the outer wall of the sleeve is connected to a top connecting bracket, the top of the motor passes through the top connecting bracket, and the top connecting bracket has a through hole for heat dissipation of the motor.

[0007] Preferably, a plurality of the material plates rotate around the bearing, the material plates being a triangular plate structure with inclined sides and an arc-shaped curved top, and the material plates being provided with a joint filling plate for filling the gaps between adjacent material plates during rotation.

[0008] Preferably, the bottoms of two adjacent positioning brackets are connected and fixed by a crossbar, the crossbar passes through the material plate and is connected to the material plate by a bearing, and the insertion hole is specifically an elongated hole structure for positioning and limiting the insertion of the insertion rod.

[0009] Preferably, the bottom of the top connecting bracket is connected to an outer telescopic bracket group, which is composed of several active telescopic brackets and passive telescopic brackets installed alternately on the housing, and the output end of the outer telescopic bracket group is connected to the top connecting bracket.

[0010] Preferably, a furnace trough is formed in the middle of the shell, and a furnace body for smelting is provided inside the furnace trough, with the interior of the furnace body corresponding to a plurality of the material plates.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model designs a material plate in conjunction with an inner telescopic bracket. The fixed end of the inner telescopic bracket is connected to a positioning bracket, which fixes the crossbar. This allows the material plate to rotate based on the bearings on the crossbar. Simultaneously, the moving end of the inner telescopic bracket moves, causing the bottom insertion rod connecting ring to move. This, in turn, causes the positioning rod fixed on the insertion rod connecting ring to move up and down. Since the positioning rod is inserted into the insertion hole, the inner telescopic bracket drives the material plate to rotate up and down based on the bearings. In actual operation, several material plates rotate upward to form an upright bowl-shaped structure. New material is placed into this structure and heated in the furnace for a certain time. Then, the moving end of the inner telescopic bracket retracts, adjusting several material plates to rotate downward, causing them to tilt downward. At this time, the heated new material automatically falls into the furnace and mixes with the molten copper. This effectively prevents the new material from directly entering the furnace and causing a sudden drop in furnace temperature, thus solving the technical problem that the entry of new material during oxygen-free copper smelting easily causes a sudden drop in local temperature, leading to crystallization defects.

[0013] 2. This utility model also designs a motor, which drives the connected telescopic frame plate to rotate through the output end of the motor. Since the telescopic frame plate is connected to the inner telescopic support, it drives the inner telescopic support to rotate, thereby realizing the rotation of the material plate. After the new material enters the furnace, the rotation of the material plate through the output end of the motor can achieve the purpose of stirring the copper liquid in the furnace, effectively promoting equiaxed crystal nucleation and reducing columnar crystal growth. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the motor connection of this utility model;

[0016] Figure 3 This is a schematic diagram of the material plate of this utility model in a flat laying state;

[0017] Figure 4 This is a schematic diagram of the material plate in the retracted state of this utility model;

[0018] Figure 5 This is a schematic diagram of the material plate fixing bracket of this utility model;

[0019] Figure 6 This is a schematic diagram of the material plate structure of this utility model.

[0020] The following are the labels in the diagram: 100, shell; 110, outer telescopic support assembly; 120, furnace body; 200, top connecting support; 210, motor; 220, sleeve; 230, telescopic frame connecting plate; 240, inner telescopic support; 241, bearing; 242, positioning support; 243, crossbar; 250, support connecting plate; 260, insertion rod connecting ring; 270, positioning insertion rod; 280, material plate; 281, joint sealing plate; 282, insertion hole. Detailed Implementation

[0021] like Figures 1 to 6 As shown, the present invention relates to a crystallization homogenization structure for an oxygen-free copper smelting furnace, comprising a shell 100 and a crystallization unit located at the top of the shell 100. The crystallization unit includes a motor 210, the output end of which is connected to a telescopic frame connecting plate 230. The bottom of the telescopic frame connecting plate 230 is connected to an inner telescopic bracket 240. The bottom of the fixed end of the inner telescopic bracket 240 is fitted with a bracket connecting plate 250. The bottom of the bracket connecting plate 250 is connected to a plurality of positioning brackets 242. A crossbar 243 is installed between the plurality of positioning brackets 242. A bearing 241 is provided on the crossbar 243. A material plate 280 is connected to the bearing 241. The bottom of the moving end of the inner telescopic bracket 240 is connected to a rod connecting ring 260. The bottom of the rod connecting ring 260 is provided with a positioning rod 270. The material plate 280 has a hole 282 that mates with the positioning rod 270.

[0022] This invention utilizes a material plate 280 in conjunction with an inner telescopic bracket 240. The fixed end of the inner telescopic bracket 240 is connected to a positioning bracket 242, which fixes the crossbar 243. This allows the material plate 280 to rotate based on the bearing 241 on the crossbar 243. Simultaneously, the moving end of the inner telescopic bracket 240 moves, causing the bottom insertion rod connecting ring 260 to move. This, in turn, causes the positioning insertion rod 270 fixed on the insertion rod connecting ring 260 to move up and down. Since the positioning insertion rod 270 is inserted into the insertion hole 282, This achieves the goal of rotating the material plates 280 up and down based on the bearings 241 via the inner telescopic support 240. In actual operation, several material plates 280 rotate upward to form an upright bowl-shaped structure. New material is placed into this structure and heated in the furnace body 120 for a certain period of time. Then, the moving end of the inner telescopic support 240 retracts, adjusting the material plates 280 to rotate downward, so that the material plates 280 are in a downward tilted state. At this time, the heated new material automatically falls into the furnace body 120 and mixes with the copper liquid. This effectively prevents the sudden drop in furnace temperature caused by the direct entry of new material into the furnace body 120, solving the technical problem of local temperature drops and crystallization defects caused by the entry of new material in current oxygen-free copper smelting processes.

[0023] This invention also incorporates a motor 210, whose output rotates to drive the connected telescopic frame plate 230 to rotate. Since the telescopic frame plate 230 is connected to the inner telescopic support 240, it drives the inner telescopic support 240 to rotate, thereby rotating the material plate 280. After the new material enters the furnace body 120, the output of the motor 210 drives the material plate 280 to rotate, thus achieving the purpose of stirring the copper liquid in the furnace body 120, effectively promoting equiaxed crystal nucleation and reducing columnar crystal growth.

[0024] Specifically, the outer wall of the motor 210 is connected to a sleeve 220, and the outer wall of the sleeve 220 is connected to a top connecting bracket 200. The top of the motor 210 passes through the top connecting bracket 200, and the top connecting bracket 200 has through holes for heat dissipation of the motor 210. The sleeve 220 is used to protect the outer wall of the motor 210, reducing the direct contact between the furnace body 120 and the motor 210, which could cause the motor 210 to overheat. It also facilitates the connection of the top connecting bracket 200 and ensures that the motor 210 and its bottom inner telescopic bracket 240 are both located inside the sleeve 220, improving the relative integrity of the crystallization unit.

[0025] Furthermore, several material plates 280 rotate around the bearing 241. The material plate 280 is a triangular plate structure with inclined sides and an arc-shaped curved top. The material plate 280 is provided with a joint filling plate 281 for filling the gaps between adjacent material plates 280 during rotation. The rotation of the material plates 280 around the bearing 241 realizes the rotation of the material plates 280 through the bearing 241. Several material plates 280 rotate around the bearing 241 to form a bowl-shaped structure, which facilitates the bearing of new material and facilitates the subsequent stirring driven by the motor 210. At the same time, the joint filling plates 281 installed on both sides of the material plate 280 ensure that the material plate 280 can fill the gaps between the material plates 280 when rotating, reducing the occurrence of new material falling directly through the gaps between the material plates 280 when bearing.

[0026] It is worth noting that the bottoms of two adjacent positioning brackets 242 are connected and fixed by a crossbar 243. The crossbar 243 passes through the material plate 280 and is connected to the material plate 280 through a bearing 241. The insertion hole 282 is specifically a long hole structure for the insertion and limiting of the positioning rod 270. The positioning brackets 242 are connected by the crossbar 243 to form a relatively integral whole, and are connected to the bottom of the inner telescopic bracket 240 through a bracket connecting plate 250, which improves the relative rotation and fixing performance of the material plate 280. The long hole structure of the insertion hole 282 makes it easy for the positioning rod 270 to adjust its relative position within the insertion hole 282 when the material plate 280 rotates relative to each other, reducing obstruction.

[0027] It is worth mentioning that the bottom of the top connecting bracket 200 is connected to an outer telescopic bracket group 110. The outer telescopic bracket group 110 is composed of several active telescopic brackets and passive telescopic brackets installed at intervals on the housing 100. The output end of the outer telescopic bracket group 110 is connected to the top connecting bracket 200. The outer telescopic bracket group 110 realizes the overall lifting operation of the top connecting bracket 200. It adopts the method of installing active telescopic brackets and passive telescopic brackets at intervals, that is, one passive telescopic bracket is installed between two adjacent active telescopic brackets, which improves the telescopic stability and driving performance of the power and reduces power waste.

[0028] It is worth mentioning that a furnace trough is opened in the middle of the shell 100, and a furnace body 120 for smelting is provided inside the furnace trough. The interior of the furnace body 120 corresponds to several material plates 280. Setting the furnace body 120 in the furnace trough makes it convenient for the new material on the top material plate 280 to enter the furnace body 120 for smelting, thereby improving the degree of automation and reducing manual operation.

[0029] Working Principle: This embodiment provides a crystallization homogenization structure for an oxygen-free copper smelting furnace. During use, the outer telescopic support assembly 110 is extended, and then the inner telescopic support 240 is extended. The moving end of the inner telescopic support 240 drives the positioning rod 270 to press down on the material plate 280, causing the material plate 280 to rotate upwards based on the bearing 241 on the crossbar 243. The rotation continues until the positioning rod 270 contacts the inner wall of the insertion hole 282, reaching its maximum stroke. At this point, a bowl-shaped structure is formed between several material plates 280. The seam-sealing plates 281 located on both sides of the material plate 280 move inwards as the material plate 280 rotates until they are in contact. The gaps between them are filled, and then the new material is poured into a bowl-shaped structure formed by several material plates through a shovel. After the new material is heated to a specified temperature on the bowl-shaped structure formed by the material plates 280, the moving end of the inner telescopic bracket 240 is adjusted to retract in the same way, so that the material plate 280 rotates downward. The heated new material falls into the furnace body 120 through the inclined material plate 280 and mixes with the copper liquid. The output end of the motor 210 drives the material plate 280 to rotate, stirring the solution in the furnace body 120. At the same time, the height of the motor 210 is adjusted by the outer telescopic bracket group 110 to stir the copper liquid at different heights in the furnace body 120.

[0030] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A crystalline homogenization structure of an oxygen-free copper smelting furnace, characterized by, The device includes a housing (100) and a crystallization unit located on top of the housing (100). The crystallization unit includes a motor (210), the output end of which is connected to a telescopic frame connecting plate (230). The bottom of the telescopic frame connecting plate (230) is connected to an inner telescopic bracket (240). The bottom of the fixed end of the inner telescopic bracket (240) is fitted with a bracket connecting plate (250), and the bottom of the bracket connecting plate (250) is connected to several positioning brackets (242). A crossbar (243) is installed between several of the positioning brackets (242). A bearing (241) is provided on the crossbar (243). A material plate (280) is connected to the bearing (241). A plug connecting ring (260) is connected to the bottom of the moving end of the inner telescopic bracket (240). A positioning plug (270) is provided at the bottom of the plug connecting ring (260). A plug hole (282) is opened on the material plate (280) to cooperate with the positioning plug (270).

2. A crystalline homogenization structure for an oxygen-free copper smelting furnace according to claim 1, characterized in that, The outer wall of the motor (210) is connected to a sleeve (220), and the outer wall of the sleeve (220) is connected to a top connecting bracket (200). The top of the motor (210) passes through the top connecting bracket (200), and the top connecting bracket (200) has a through hole for heat dissipation of the motor (210).

3. The homogenization structure of an oxygen-free copper smelting furnace according to claim 1, characterized in that, Several of the material plates (280) rotate around the bearing (241). The material plate (280) is a triangular plate structure with inclined sides and an arc-shaped top. The material plate (280) is provided with a joint plate (281) for filling the gap between adjacent material plates (280) during rotation.

4. The homogenization structure of an oxygen-free copper smelting furnace according to claim 1, characterized in that, The bottoms of two adjacent positioning brackets (242) are connected and fixed by a crossbar (243). The crossbar (243) passes through the material plate (280) and is connected to the material plate (280) by a bearing (241). The insertion hole (282) is specifically a long hole structure for the insertion and limiting of the positioning rod (270).

5. The homogenization structure of an oxygen-free copper smelting furnace according to claim 2, characterized in that, The bottom of the top connecting bracket (200) is connected to an outer telescopic bracket group (110). The outer telescopic bracket group (110) is composed of several active telescopic brackets and passive telescopic brackets installed at intervals on the housing (100). The output end of the outer telescopic bracket group (110) is connected to the top connecting bracket (200).

6. The homogenization structure of an oxygen-free copper smelting furnace according to claim 5, characterized in that, The shell (100) has a furnace slot in the middle, and a furnace body (120) for smelting is provided in the furnace slot. The interior of the furnace body (120) corresponds to a plurality of the material plates (280).

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