Improved multi-element copper alloy up-drawing furnace

Abstract

The utility model discloses an improved multi-element copper alloy up-drawing furnace which comprises a furnace shell, a furnace cover is arranged at the upper end of the furnace shell, a molten pool is fixedly connected to the inner wall of the furnace shell, two partition plates are fixedly connected to the inner wall of the molten pool, and the interior of the molten pool is divided into a smelting area, a transition area and an up-drawing area by the two partition plates. Melting channels are formed in the inner bottoms of the smelting area, the transition area and the upward guiding area, through openings are formed in the lower ends of the two partition plates, filter screens are arranged at the two through openings, mounting plates are fixedly connected to the upper ends of the two filter screens, two fixing plates are fixedly connected to one side walls of the two partition plates, and the two fixing plates are fixedly connected to the other side walls of the two partition plates. Sliding grooves are formed in the opposite sides of every two fixing plates matched with each other. The filter screen is arranged to filter charcoal, slag and other impurities, the impurities are prevented from entering the up-drawing copper rod to cause inclusion of the copper rod, and the filter screen is convenient and easy to disassemble and assemble and convenient to clean and replace through cooperation of the sliding plate, the wedge-shaped block and other structures.

Description

Technical Field

[0001] This utility model relates to the field of upward drawing furnace technology, and in particular to an improved multi-element copper alloy upward drawing furnace. Background Technology

[0002] The demand for lightweighting in fields such as medical wiring harnesses, robot wiring harnesses, ABS wiring harnesses, speaker wiring harnesses, and automotive wiring harnesses has led to the rapid development and surge in demand for copper and copper alloy microfilaments. The purity and microstructure requirements of the base material for preparing microfilaments (with a wire diameter of 0.01-0.03mm) are high. However, the lack of a molten channel in the upper lead-out zone and the heat loss from the copper alloy liquid surface in low production environments can cause frozen copper, i.e., surface solidification, which is not conducive to slag removal in the transition zone.

[0003] To this end, utility model patent with publication number CN214768788U discloses an improved multi-element copper alloy upward drawing furnace, including an open molten pool, and an inner cavity including a melting cavity, a transition cavity and an upward drawing cavity that are connected at the bottom. The bottom of the melting cavity, the transition cavity and the upward drawing cavity are all provided with an in-cavity circulating melting groove, and / or the transition cavity is connected to the melting cavity and the upward drawing cavity by an inter-cavity melting groove. The transition cavity of the improved multi-element copper alloy upward drawing furnace is provided with an in-cavity circulating melting groove. The molten liquid entering the in-cavity circulating melting groove is heated at the melting groove and rises upward, maintaining the temperature of the copper liquid in the transition cavity and avoiding the problem of frozen copper on the surface of the copper alloy molten liquid affecting slag discharge. The in-cavity circulating melting groove intensifies the circulation flow of the molten liquid in the transition cavity, and some impurities float upward with the upward molten liquid, increasing the amount of slag discharged in the transition cavity.

[0004] However, in actual use, we found that both partitions have connecting ports at the bottom. During the smelting process, a layer of charcoal needs to be covered on the surface of the molten copper to prevent oxygen from entering. In addition, the molten copper is prone to react and produce slag during the smelting process. This makes it easy for impurities such as charcoal and slag in the molten copper to enter the upper drawing area through the connecting ports. Then, during the upper drawing process, they enter the interior of the upper drawing copper rod and become inclusions, resulting in an uneven structure of the copper rod. Therefore, we need to consider how to solve this problem. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an improved multi-element copper alloy upward drawing furnace. This furnace is equipped with a filter screen to filter impurities such as charcoal and slag, preventing them from entering the upward drawing copper rod and causing copper rod inclusions. Furthermore, through the cooperation of structures such as sliding plates and wedge blocks, the filter screen is easy to remove and install, and is convenient for cleaning and replacement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An improved multi-element copper alloy upward drawing furnace includes a furnace shell, a furnace cover at the upper end of the furnace shell, a molten pool fixedly connected to the inner wall of the furnace shell, two partitions fixedly connected to the inner wall of the molten pool, the two partitions dividing the interior of the molten pool into a smelting zone, a transition zone and an upward drawing zone, molten grooves provided at the bottom of the smelting zone, the transition zone and the upward drawing zone, openings at the lower ends of the two partitions, filters provided at the openings, mounting plates fixedly connected to the upper ends of the two filters, two fixing plates fixedly connected to one side wall of the two partitions, a sliding groove provided on the opposite side of each pair of cooperating fixing plates, an inert gas pipe fixedly connected to the lower end of the furnace cover, multiple gas outlets provided on one side inner wall of the inert gas pipe, an inlet pipe connected inside the inert gas pipe, the other end of the inlet pipe penetrating the furnace cover, and a limiting mechanism for limiting the corresponding mounting plate provided inside each pair of cooperating sliding grooves.

[0008] Preferably, both of the limiting mechanisms include two sliding plates, each sliding plate is slidably connected to the inner wall of the corresponding sliding groove, and a wedge block is fixedly connected to the opposite side of each pair of mutually cooperating sliding plates. Limiting grooves that cooperate with the corresponding wedge blocks are opened on both side walls of the two mounting plates.

[0009] Preferably, the opposite sides of each pair of cooperating sliding plates are elastically connected to the inner wall of the corresponding sliding groove by a first spring.

[0010] Preferably, each of the grooves is provided with a stop bar, each stop bar is located directly above the inclined surface of the corresponding wedge block, and the upper end of each stop bar passes through the corresponding fixing plate and extends to the outside.

[0011] Preferably, a pressure plate is fixedly connected to the upper end of each of the abutments, and the lower end of each pressure plate is elastically connected to the upper end of the corresponding fixed plate through a second spring.

[0012] Preferably, a fixing rod is fixedly connected to the upper end of each of the two mounting plates, and both fixing rods are made of high-temperature resistant material.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] 1. It is equipped with a filter screen and a fixing plate. The filter screen filters impurities such as charcoal and slag, preventing them from directly entering the upper guide area through the inlet. This avoids them from entering the upper guide copper rod and causing it to become entangled. The filter screen is also equipped with a sliding plate, wedge block and first spring, which makes it easy to disassemble and assemble the filter screen and to clean and replace it.

[0015] 2. The furnace is equipped with a furnace cover and inert gas pipes. Multiple gas outlets are inclined and set towards the center of the predetermined liquid surface in the corresponding area. By introducing inert gas into the inert gas pipes, the inert gas can form a protective layer on the surface of the copper liquid, preventing metal oxidation, ensuring the purity of the metal, and maintaining the stability of the pressure inside the furnace. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an improved multi-element copper alloy upward drawing furnace proposed in this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the front cross-section;

[0018] Figure 3 for Figure 1 A schematic diagram of the right-side cross-section;

[0019] Figure 4 for Figure 3 Enlarged view of point A;

[0020] Figure 5 for Figure 3 Enlarged view of point B.

[0021] In the diagram: 1 Furnace shell, 2 Furnace cover, 3 Molten pool, 4 Baffle, 5 Smelting zone, 6 Transition zone, 7 Upper drawing zone, 8 Melting groove, 9 Through port, 10 Filter screen, 11 Mounting plate, 12 Fixing plate, 13 Slide groove, 14 Sliding plate, 15 Wedge block, 16 Limiting groove, 17 First spring, 18 Push rod, 19 Pressure plate, 20 Second spring, 21 Fixing rod, 22 Inert gas pipe, 23 Gas outlet, 24 Gas inlet pipe. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-5An improved multi-element copper alloy upward drawing furnace includes a furnace shell 1, a furnace cover 2 at the upper end of the furnace shell 1, a molten pool 3 fixedly connected to the inner wall of the furnace shell 1, and two partitions 4 fixedly connected to the inner wall of the molten pool 3. The two partitions 4 divide the interior of the molten pool 3 into a smelting zone 5, a transition zone 6, and an upward drawing zone 7. Molten grooves 8 are provided at the bottom of the inner walls of the smelting zone 5, the transition zone 6, and the upward drawing zone 7. An induction coil is installed in each molten groove 8 for heating. An opening 9 is provided at the lower end of each of the two partitions 4. The smelting zone 5, the transition zone 6 and the upper drawing zone 7 are connected through the through-hole 9. Filter screens 10 are provided at both through-holes 9. The filter screens 10 can filter impurities such as charcoal and slag in the copper liquid to prevent them from entering the upper drawing copper rod and causing copper rod impurities. Mounting plates 11 are fixedly connected to the upper ends of the two filter screens 10. Two fixing plates 12 are fixedly connected to one side wall of the two partitions 4. Sliding grooves 13 are opened on the opposite sides of each pair of cooperating fixing plates 12.

[0024] Each pair of mating grooves 13 is equipped with a limiting mechanism for limiting the corresponding mounting plate 11. Each limiting mechanism includes two sliding plates 14, each sliding plate 14 being slidably connected to the inner wall of the corresponding groove 13. A wedge block 15 is fixedly connected to the opposite side of each pair of mating sliding plates 14. Limiting grooves 16 are formed on both side walls of the two mounting plates 11 to mate with the corresponding wedge blocks 15. Installation is achieved by inserting the wedge block 15 into the corresponding limiting groove 16. The mounting plate 11 is fixed, thereby fixing the filter screen 10. The opposite sides of each pair of mutually cooperating sliding plates 14 are elastically connected to the inner wall of the corresponding slide groove 13 through the first spring 17. Each slide groove 13 is provided with a stop rod 18. Each stop rod 18 is located directly above the inclined surface of the corresponding wedge block 15. The lower end surface of each stop rod 18 is a smooth surface. The upper end of each stop rod 18 passes through the corresponding fixing plate 12 and extends to the outside. Each stop rod 18 is fixedly connected to a pressure plate 19 at its upper end.

[0025] Each pressure plate 19 has its lower end elastically connected to the upper end of the corresponding fixing plate 12 via a second spring 20. The cooperation of the abutment rod 18, pressure plate 19, and second spring 20 facilitates easy removal and installation of the filter screen 10, making it convenient to clean and preventing impurities such as charcoal and slag from clogging the filter screen and affecting its filtration effect. The upper ends of both mounting plates 11 are fixedly connected to fixing rods 21, both made of high-temperature resistant material. The lower end of the furnace cover 2 is fixedly connected to an inert gas pipe 22, which is located on the furnace cover 2. The lower end of the inert gas pipe 22 is positioned between the opening of the molten pool 3 and the inner edge of the opening of the molten pool 3, and is arranged to enclose the opening from the top and bottom. Multiple air outlets 23 are provided on one inner wall of the inert gas pipe 22. Each air outlet 23 is inclined towards the center of the predetermined liquid surface in the corresponding area. An air inlet pipe 24 is connected inside the inert gas pipe 22. The other end of the air inlet pipe 24 passes through the furnace cover 2 and is connected to the gas source. By introducing inert gas into the inert gas pipe 22, the inert gas can form a protective layer on the surface of the copper liquid, preventing metal oxidation and ensuring the purity of the metal. In addition, it can maintain the stability of the pressure inside the furnace.

[0026] In this invention, during use, inert gas can be introduced into the inert gas pipe 22 through the air inlet pipe 24. The inert gas will be discharged through multiple air outlets 23 and enter the molten pool 3. By introducing inert gas, a protective layer can be formed on the surface of the copper liquid, displacing oxygen to prevent metal oxidation, ensuring the purity of the metal, and maintaining the stability of the internal pressure of the molten pool 3, making the quality of the copper rod more uniform and the performance more stable. In addition, during the upward drawing process, the copper liquid can be filtered through two filter screens 10 to prevent impurities such as charcoal and slag from directly entering the upward drawing area 7 through the opening 9, thereby avoiding impurities such as charcoal and slag from entering the interior of the upward drawing copper rod and causing copper rod inclusions during the upward drawing process.

[0027] When the filter screen 10 needs cleaning, press down on the two pressure plates 19. The two abutment rods 18 will move down and push the two wedge blocks 15 away from the corresponding limiting grooves 16, releasing the limiting on the mounting plate 11. Without releasing the pressure, the filter screen 10 can be lifted out of the furnace shell 1 through the fixing rod 21 for cleaning. After cleaning, press down on the two pressure plates 19. The two second springs 20 are in a compressed state. The two abutment rods 18 will move down and push the two wedge blocks 15 away from each other. The two sliding plates 14 also move away from each other. At this time, the two first springs... With the filter screen 10 in a compressed state, without releasing it, return the filter screen 10 to its original position, then release the two pressure plates 19. Under the elastic action of the two second springs 20, the two abutment rods 18 return to their original positions. Under the elastic action of the two first springs 17, the two sliding plates 14, along with the corresponding wedge blocks 15, move relative to each other and engage with the corresponding limiting grooves 16. This completes the installation of the filter screen 10. In this way, the two filter screens 10 are easy to install and remove, and the filter screens 10 can be cleaned to prevent impurities such as charcoal and slag from clogging the filter screens 10 and affecting the filtration effect.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An improved multi-element copper alloy upward drawing furnace, comprising a furnace shell (1), characterized in that, A furnace cover (2) is provided at the upper end of the furnace shell (1). A molten pool (3) is fixedly connected to the inner wall of the furnace shell (1). Two partitions (4) are fixedly connected to the inner wall of the molten pool (3). The two partitions (4) divide the interior of the molten pool (3) into a smelting zone (5), a transition zone (6), and an upper drawing zone (7). Molten grooves (8) are provided at the bottom of the inner walls of the smelting zone (5), the transition zone (6), and the upper drawing zone (7). A through-hole (9) is provided at the lower end of each of the two partitions (4). A filter screen (10) is provided at each of the two through-holes (9). Each of the filter screens (10) is fixedly connected to an mounting plate (11) at its upper end. Each of the two partitions (4) is fixedly connected to two fixing plates (12) on one side wall. Each pair of fixing plates (12) has a sliding groove (13) on the opposite side. The lower end of the furnace cover (2) is fixedly connected to an inert gas pipe (22). The inner wall of one side of the inert gas pipe (22) has multiple air outlets (23). The inert gas pipe (22) is connected to an air inlet pipe (24). The other end of the air inlet pipe (24) passes through the furnace cover (2). Each pair of mating grooves (13) is provided with a limiting mechanism for limiting the corresponding mounting plate (11).

2. An improved multi-element copper alloy upward drawing furnace according to claim 1, characterized in that, Both of the limiting mechanisms include two sliding plates (14), each sliding plate (14) is slidably connected to the inner wall of the corresponding sliding groove (13), and a wedge block (15) is fixedly connected to the opposite side of each pair of mutually cooperating sliding plates (14). Both sides of the mounting plates (11) are provided with limiting grooves (16) that cooperate with the corresponding wedge blocks (15).

3. An improved multi-element copper alloy upward drawing furnace according to claim 2, characterized in that, The opposite sides of each pair of sliding plates (14) are elastically connected to the inner wall of the corresponding groove (13) via a first spring (17).

4. An improved multi-element copper alloy upward drawing furnace according to claim 2, characterized in that, Each of the grooves (13) is provided with a stop bar (18), each of the stop bars (18) is located directly above the inclined surface of the corresponding wedge block (15), and the upper end of each of the stop bars (18) passes through the corresponding fixing plate (12) and extends to the outside.

5. An improved multi-element copper alloy upward drawing furnace according to claim 4, characterized in that, Each of the abutments (18) has a pressure plate (19) fixedly connected to its upper end, and the lower end of each pressure plate (19) is elastically connected to the upper end of the corresponding fixed plate (12) via a second spring (20).

6. An improved multi-element copper alloy upward drawing furnace according to claim 1, characterized in that, Both mounting plates (11) are fixedly connected to the upper ends of a fixing rod (21), and both fixing rods (21) are made of high temperature resistant material.

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