Melt purification mechanism for processing oxygen-free copper rod
By using spiral stirring blades, annular degassing pipes, and multi-stage filtration components, combined with automatic cleaning brushes, the problem of poor purification effect in existing melt purification mechanisms has been solved, achieving a highly efficient and stable melt purification process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 扬中凯悦铜材有限公司
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-17
AI Technical Summary
Existing melt purification mechanisms suffer from poor purification effects, limited contact area between inert gas and melt, and easy clogging of filters, which affects production efficiency.
It employs spiral stirring blades, annular degassing pipes, and multi-stage filtration components, combined with an automatic cleaning component, to enhance the mixing effect, improve the efficiency of gas impurity removal, and achieve convenient cleaning of the filter screen through a cleaning brush.
It significantly improves melt purification efficiency, ensures filtration accuracy, reduces downtime, and enhances production stability and efficiency.
Smart Images
Figure CN224136416U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of oxygen-free copper rod processing, and in particular to a melt purification mechanism for oxygen-free copper rod processing. Background Technology
[0002] Oxygen-free copper rods are copper rods with extremely low oxygen content. Due to their high purity, excellent conductivity, and processing performance, they are widely used in wires and cables, electronic devices, and other fields. In the processing of oxygen-free copper rods, melt purification is a crucial step. By purifying the copper melt, impurities such as gases and inclusions can be effectively removed, improving the quality of the oxygen-free copper rods.
[0003] Existing melt purification systems typically include refining furnaces, degassing units, and filtration units. The refining furnace is primarily used to refine molten copper, removing some impurities. The degassing unit blows inert gas into the melt, causing the gas to combine with and expel gaseous impurities. The filtration unit uses filter media such as filter screens to filter the melt and intercept inclusions. However, existing melt purification systems suffer from inadequate purification efficiency. On one hand, the contact area between the inert gas and the melt in the degassing unit is limited, resulting in insufficient removal of gaseous impurities. On the other hand, the filter screens in the filtration unit are prone to clogging, hindering melt flow and making filter cleaning inconvenient, thus impacting production efficiency. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a melt purification mechanism for processing oxygen-free copper rods that is highly efficient, easy to clean, and stable.
[0005] This utility model discloses a melt purification mechanism for oxygen-free copper rod processing, which includes a refining furnace body, with a feed inlet at the top and a discharge outlet at the bottom.
[0006] The refining furnace body is equipped with a stirring assembly, which includes a stirring shaft and multiple stirring blades. The stirring shaft is vertically arranged and rotatably connected to the top of the refining furnace body. The multiple stirring blades are evenly distributed around the stirring shaft. The top of the refining furnace body is equipped with a stirring motor that drives the stirring shaft to rotate.
[0007] The refining furnace body is also equipped with a degassing assembly, which includes multiple degassing pipes. These multiple degassing pipes are evenly distributed around the circumference of the refining furnace body and are fixedly connected to the interior of the refining furnace body. Each degassing pipe is equipped with multiple evenly distributed jet nozzles. The degassing pipes are connected to an inert gas source through pipes.
[0008] A filter box is located below the discharge port of the refining furnace body. The filter box contains a multi-stage filter assembly, which includes a coarse filter, a medium filter, and a fine filter arranged from top to bottom. A discharge port is located at the bottom of the filter box, and a valve is installed at the discharge port.
[0009] The top of the filter box is equipped with a cleaning assembly, which includes multiple cleaning brushes. The multiple cleaning brushes are respectively positioned above the coarse filter screen, the medium filter screen, and the fine filter screen. The cleaning brushes are slidably connected to the top of the filter box via connecting rods. The top of the filter box is equipped with a cleaning drive component that drives the cleaning brushes to slide along the direction of the connecting rods.
[0010] As a preferred embodiment of this utility model, the stirring blade has a spiral structure, and the multiple protrusions on the surface of the stirring blade are irregularly distributed.
[0011] As a preferred embodiment of this utility model, the degassing pipe has a ring structure, the jet nozzle is tilted towards the center of the refining furnace at an angle of 30°-60°, and the jet direction of adjacent jet nozzles on the same degassing pipe is staggered.
[0012] As a preferred embodiment of this utility model, the inner wall of the filter box is provided with a guide groove, which is a dovetail groove structure. The edges of the coarse filter screen, the medium filter screen and the fine filter screen are provided with guide blocks, which cooperate with the guide groove.
[0013] As a preferred embodiment of this utility model, the cleaning drive component includes a slide rail disposed on the top of the filter box, a slider that cooperates with the slide rail at the bottom of the connecting rod, a lead screw disposed on one side of the slide rail, the lead screw being screwed to the slider, and a cleaning motor for driving the lead screw to rotate disposed outside the filter box.
[0014] As a preferred embodiment of this utility model, the refining furnace body is provided with a protective sleeve on the outside, and the protective sleeve includes a high-temperature resistant heat insulation layer, a heat preservation layer and a protective layer from the inside to the outside.
[0015] As a preferred embodiment of this utility model, the bottom of the filter box is provided with a support leg. The support leg is a height-adjustable structure, including an outer cylinder and an inner rod. The inner rod is slidably connected to the outer cylinder, and the support leg is provided with an adjustment motor that drives the inner rod to slide along the direction of the outer cylinder.
[0016] As a preferred embodiment of this utility model, a sealing cover is provided at the feed inlet, the surface of the sealing cover is provided with a groove, a protruding sealing ring is provided in the groove, and the inner surface of the feed inlet is provided with a slope, which is pressed into contact with the sealing ring.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0018] 1. The stirring assembly inside the refining furnace features spiral-shaped stirring blades with irregularly distributed raised surfaces, effectively enhancing the mixing of the molten copper and ensuring a more thorough refining process and more complete impurity removal. The annular degassing pipe, combined with the inclined, staggered jet nozzles, significantly increases the contact area between the inert gas and the melt, allowing gaseous impurities to combine more fully with the inert gas and be discharged, thus significantly improving degassing efficiency. The multi-stage filtration assembly, composed of coarse, medium, and fine filters, enables layer-by-layer filtration of inclusions in the melt, ensuring filtration precision.
[0019] 2. The dovetail groove guide structure on the inner wall of the filter box, together with the guide block on the edge of the filter screen, facilitates the installation and removal of the filter screen; the cleaning component is driven by a cleaning motor to drive the lead screw, which drives the cleaning brush to slide on the filter screen, which can effectively and timely clean the impurities clogging the filter screen, avoid poor melt flow, and the cleaning operation is convenient, reducing downtime for cleaning and improving production efficiency. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0022] Figure 3 This is a schematic diagram of the internal structure of the filter box of this utility model;
[0023] Figure 4 This is a schematic diagram of the stirring blade structure of this utility model;
[0024] Figure 5 This is a schematic diagram of the sheath structure of this utility model;
[0025] Figure 6 This is a schematic diagram of the support leg structure of this utility model;
[0026] Figure 7 This is a schematic diagram of the sealing cap structure of this utility model;
[0027] The attached diagram is labeled as follows: 1. Refining furnace body; 11. Feed inlet; 111. Slope; 12. Discharge outlet; 2. Agitator assembly; 21. Agitator shaft; 22. Agitator blades; 221. Protrusion; 23. Agitator motor; 3. Degassing assembly; 31. Degassing pipe; 32. Air nozzle; 33. Pipeline; 34. Inert gas source; 4. Filter box; 41. Discharge outlet; 42. Valve; 43. Guide groove; 5. Multi-stage filter assembly; 51. Coarse filter screen; 52. 53. Medium filter screen; 54. Fine filter screen; 65. Guide block; 66. Cleaning assembly; 67. Cleaning brush; 68. Connecting rod; 69. Cleaning drive component; 60. Slide rail; 61. Slider; 62. Lead screw; 63. Cleaning motor; 70. Protective sleeve; 71. High temperature resistant insulation layer; 72. Thermal insulation layer; 73. Protective layer; 80. Support leg; 81. Outer cylinder; 82. Inner rod; 83. Adjusting motor; 91. Sealing cover; 92. Groove; 93. Sealing ring. Detailed Implementation
[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0030] Reference Figures 1-3 This embodiment provides a melt purification mechanism for oxygen-free copper rod processing, including a refining furnace body 1, a stirring assembly 2, a degassing assembly 3, a filter box 4, a multi-stage filter assembly 5, and a cleaning assembly 6.
[0031] Specifically, the refining furnace body 1 adopts a cylindrical or square cavity structure, serving as a container for copper molten refining and preliminary purification, providing operating space for stirring and degassing. It has a feed inlet 11 at the top for introducing copper molten raw materials and a discharge outlet 12 at the bottom for conveying the pre-purified melt to the filtration stage. The refining furnace body 1 internally houses a stirring assembly 2 and a degassing assembly 3. The stirring assembly 2 includes a stirring shaft 21, multiple stirring blades 22, and a stirring motor 23. The stirring shaft 21 is vertically arranged, with its top end rotatably connected to the top of the refining furnace body 1. The multiple stirring blades 22 are evenly distributed circumferentially along the stirring shaft 21. The stirring motor 23... Installed on the top of the furnace body, it is connected to the stirring shaft 21 via a coupling to provide rotational power. After the copper molten metal enters the refining furnace through the feed inlet 11, the stirring motor 23 drives the stirring shaft 21 to rotate, which in turn drives the stirring blades 22 to rotate. This promotes the flow of the copper molten metal, enhances the contact efficiency between the inert gas and the molten metal in the degassing assembly 3, and promotes the uniformity of the refining reaction. The degassing assembly 3 includes multiple degassing pipes 31, which are evenly distributed around the circumference of the refining furnace body 1 and fixedly connected to the interior of the refining furnace body 1. The degassing pipes 31 are connected to an inert gas source 34, such as a gas cylinder or gas pump, via pipes 33. Each degassing pipe 31 has... Each part is equipped with multiple evenly distributed jet nozzles 32. Inert gas is injected into the melt in the form of microbubbles through the jet nozzles 32 on the degassing pipe 31, increasing the gas-liquid contact area. As the bubbles rise, they adsorb dissolved gases and suspended impurities, forming bubble clusters that float to the surface and are discharged, thus achieving degassing. The filter box 4 is located below the discharge port 12 of the refining furnace body 1. It is rectangular or cylindrical, with its top connected to the discharge port 12 and its bottom equipped with a discharge port 41 and a valve 42 for discharging the purified melt. The multi-stage filter assembly 5 is installed inside it. The multi-stage filter assembly 5 includes a coarse filter screen 51 and a medium filter screen 52 arranged sequentially from top to bottom. The filter screen 53 has a progressively smaller pore size, which intercepts impurities of different sizes. The filtration accuracy is improved step by step through multiple filters, further ensuring the purity of the melt. The cleaning component 6 includes multiple cleaning brushes 61, each of which is positioned directly above each layer of filter screen. The brush bristles are made of wear-resistant material. To ensure full coverage of the cleaning area, the length of the cleaning brush 61 matches that of the filter screen. The cleaning brush 61 is slidably connected to the top of the filter box 4 via a connecting rod 62. The top of the filter box 4 is equipped with a cleaning drive component 63 that drives the cleaning brush 61 to slide along the direction of the connecting rod 62, sweeping impurities to the corners or collection grooves of the filter box 4 to avoid clogging the filter screen pores.
[0032] In this embodiment, multiple degassing pipes 31 and multiple jet nozzles 32 are evenly distributed circumferentially to disperse inert gas into various areas of the melt in the form of bubble clusters. Combined with the eddies generated by stirring, the gas-liquid contact area and contact time are greatly increased, thereby improving the gas impurity removal rate. The multi-stage filter design achieves graded interception of impurities, avoiding blockage of a single filter due to excessive load, while improving filtration accuracy. The automatic cleaning component removes impurities from the filter in real time through mechanical brushing, reducing downtime. The stirring, degassing, filtering and cleaning processes are all automated through motors and drive components, which can be integrated into the production line control system to reduce manual intervention and improve production stability.
[0033] As a preferred embodiment of the above technical solution, such as Figure 4 As shown, the stirring blade 22 has a spiral structure, extending along the axial direction of the stirring shaft 21 and distributed around its circumference. The pitch and diameter of the spiral can be optimized according to the size of the refining furnace body 1 and the melt flow requirements. The multiple protrusions 221 on the surface of the stirring blade 22 are irregularly distributed bosses, ridges, or granular structures. In this embodiment, when the stirring shaft 21 rotates, the spiral surface of the spiral blade will generate an axial thrust on the copper melt, causing the melt to circulate up and down along the axial direction of the stirring shaft 21. The rotation of the spiral blade will also drive the melt to rotate circumferentially, causing the melt to diffuse towards the side wall of the furnace body under the action of centrifugal force, and then flow back to the vicinity of the stirring shaft 21 along the side wall, forming a transverse circulation. The two circulations are superimposed, so that the melt forms a three-dimensional stirring effect in the furnace body. The protrusions 221 will generate local turbulence and shear force during the melt flow, which can cause fine inclusion particles to collide with each other and aggregate into larger particles, which are convenient for subsequent filtration interception.
[0034] To further expand the contact range between the gas and the melt, refer to Figure 2 The degassing pipe 31 has an annular structure, and the jet nozzle 32 is inclined at an angle of 30°-60° toward the center of the refining furnace body 1. The jetting directions of adjacent jet nozzles 32 on the same degassing pipe 31 are staggered. In this embodiment, the jetting points are evenly distributed along the circumference of the furnace body by the annular degassing pipe 31, which can avoid the problem of excessively high local gas content in the melt and insufficient degassing in other areas caused by single-sided or single-point jetting. Moreover, each annular pipe can simultaneously inject dozens of bubble streams into the melt, covering the entire cross-section of the melt. When the bubbles are injected into the melt at an inclination angle of 30°-60°, the initial movement direction of the bubbles includes both the component toward the center of the furnace body and the component along the circumference tangent. The tangential component will drive the melt to generate a rotating flow, which, combined with the circumferential stirring effect of the stirring component 2, forms a stronger vortex effect and prolongs the residence time of the bubbles in the melt.
[0035] Furthermore, referring to Figure 3The inner wall of the filter box 4 is provided with a guide groove 43, which has a dovetail groove structure. The edges of the coarse filter screen 51, the medium filter screen 52 and the fine filter screen 53 are provided with guide blocks 55, which cooperate with the guide groove 43. The upper surface of the guide block 55 contacts the upper edge of the guide groove 43 to prevent the filter screen from falling upward, and the lower surface of the guide block 55 contacts the lower edge of the guide groove 43 to prevent the filter screen from falling downward. While ensuring the convenience of filter screen installation and disassembly, it enhances the stability of the filter screen after installation, prevents the filter screen from shifting or shaking under the action of melt pressure, and ensures stable filtration effect.
[0036] To provide precise guidance for the sliding of the cleaning brush 61, the cleaning drive component 63 includes a slide rail 631 located at the top of the filter box 4. The slide rail 631 extends along the length of the filter screen, covering the entire width of the filter screen. A slider 632, which mates with the slide rail 631, is located at the bottom of the connecting rod 62. A lead screw 633 is located on one side of the slide rail 631 and is screwed to the slider 632. A nut seat matching the lead screw 633 is located inside the slider 632. When the lead screw 633 rotates, the nut seat drives the slider 632 to reciprocate along the slide rail 631, thereby driving the connecting rod 62 and the cleaning brush 61 to move synchronously. The filter box 4 has a drive lead screw 633 located outside. The rotating cleaning motor 634, which can be a servo motor or a stepper motor, has forward and reverse rotation functions. When the cleaning motor 634 is powered on, it drives the lead screw 633 to rotate. The slider 632 moves along the slide rail 631 due to the screw connection. When the lead screw 633 rotates forward, the slider 632 drives the connecting rod 62 and the cleaning brush 61 to move to one side. When the lead screw 633 rotates in reverse, the slider 632 moves in the opposite direction, so that the cleaning brush 61 cleans the filter screen back and forth. Through the cooperation of the slide rail 631 and the slider 632, it is ensured that the cleaning brush 61 can move in a straight line when cleaning the filter screen, which improves the cleaning effect and avoids the cleaning brush 61 deviating, which would cause the filter screen to be incompletely cleaned in some areas.
[0037] The outer side of the refining furnace body 1 is provided with a protective sleeve 7, as shown in the figure. Figure 5 The sheath 7 consists of a high-temperature resistant insulation layer 71, a heat insulation layer 72, and a protective layer 73, arranged from the inside out. The high-temperature resistant insulation layer 71 directly contacts the inner wall of the furnace and blocks the heat conduction path of the high-temperature melt to the outside of the furnace through a low thermal conductivity material. The heat insulation layer 72 can be made of materials with low thermal conductivity, such as rock wool board, aluminum silicate fiber board, or aerogel insulation felt, and is laid close to the high-temperature resistant insulation layer 71, filling or covering its outer side to form a continuous heat insulation barrier that can prevent heat loss to the outside through conduction and convection. The protective layer 73 can be made of high-strength materials such as stainless steel plate, aluminum alloy plate, or weathering steel and is fixed to the outside of the heat insulation layer 72 to form a complete closed shell. The sealing structure of the protective layer 73 can prevent heat convection between the outside air and the inside of the heat insulation layer, avoiding heat loss due to air flow.
[0038] The bottom of the filter box 4 is equipped with support legs 8, which are evenly fixed to the corners of the filter box 4, as shown in the reference. Figure 6 The support leg 8 is a height-adjustable structure, including an outer cylinder 81 and an inner rod 82. The inner rod 82 is slidably connected to the outer cylinder 81, and the support leg 8 is equipped with an adjustment motor 83 that drives the inner rod 82 to slide along the direction of the outer cylinder 81. The adjustment motor 83 is connected to the transmission mechanism. By adjusting the extension length of the inner rod 82 in the outer cylinder 81, the filter box 4 can be kept level on uneven ground, ensuring that the melt can flow evenly in the filter box 4, improving the filtration efficiency, and facilitating the installation and commissioning of the equipment.
[0039] A sealing cap 9 is provided at the feed inlet 11, as per [reference]. Figure 7 The sealing cover 9 has a groove 91 on its surface, and a protruding sealing ring 92 is provided in the groove 91. The inner surface of the feed inlet 11 has a slope 111, which is pressed into contact with the sealing ring 92. The sealing ring is made of high temperature and corrosion resistant silicone rubber material. The setting of the sealing ring 92 can enhance the sealing performance of the feed inlet 11, prevent outside air from entering the refining furnace, avoid oxidation of copper melt, and ensure the quality of oxygen-free copper rod.
[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A melt purification mechanism for processing oxygen-free copper rods, characterized in that, It includes a refining furnace body (1), the top of which is provided with a feed inlet (11) and the bottom with a discharge outlet (12); The refining furnace body (1) is equipped with a stirring assembly (2), which includes a stirring shaft (21) and multiple stirring blades (22). The stirring shaft (21) is vertically arranged and rotatably connected to the top of the refining furnace body (1). The multiple stirring blades (22) are evenly distributed around the stirring shaft (21). The top of the refining furnace body (1) is equipped with a stirring motor (23) that drives the stirring shaft (21) to rotate. The refining furnace body (1) is also provided with a degassing assembly (3). The degassing assembly (3) includes multiple degassing pipes (31). The multiple degassing pipes (31) are evenly distributed around the refining furnace body (1) and are fixedly connected to the interior of the refining furnace body (1). Each degassing pipe (31) is provided with multiple evenly distributed jet nozzles (32). The degassing pipe (31) is connected to an inert gas source (34) through a pipe (33). A filter box (4) is provided below the discharge port (12) of the refining furnace body (1). The filter box (4) is provided with a multi-stage filter assembly (5). The multi-stage filter assembly (5) includes a coarse filter screen (51), a medium filter screen (52) and a fine filter screen (53) arranged from top to bottom. A discharge port (41) is provided at the bottom of the filter box (4). A valve (42) is provided at the discharge port (41). The filter box (4) is provided with a cleaning component (6) on the top. The cleaning component (6) includes multiple cleaning brushes (61). The multiple cleaning brushes (61) are respectively arranged above the coarse filter screen (51), the medium filter screen (52) and the fine filter screen (53). The cleaning brushes (61) are slidably connected to the top of the filter box (4) through a connecting rod (62). The top of the filter box (4) is provided with a cleaning drive component (63) that drives the cleaning brushes (61) to slide along the direction of the connecting rod (62).
2. The melt purifying apparatus for oxygen-free copper rod processing according to claim 1, wherein The stirring blade (22) has a spiral structure, and the multiple protrusions (221) on the surface of the stirring blade (22) are irregularly distributed.
3. The melt purifying apparatus for oxygen-free copper rod processing according to claim 1, wherein The degassing pipe (31) has an annular structure, the jet nozzle (32) is tilted towards the center of the refining furnace body (1) at an angle of 30°-60°, and the jetting directions of adjacent jet nozzles (32) on the same degassing pipe (31) are staggered.
4. The melt purification mechanism for oxygen-free copper rod processing as described in claim 1, characterized in that, The inner wall of the filter box (4) is provided with a guide groove (43), which is a dovetail groove structure. The edges of the coarse filter screen (51), the medium filter screen (52) and the fine filter screen (53) are provided with guide blocks (55), which cooperate with the guide groove (43).
5. The melt purifying apparatus for oxygen-free copper rod processing according to claim 1, wherein The cleaning drive component (63) includes a slide rail (631) set on the top of the filter box (4), a slider (632) that cooperates with the slide rail (631) is provided at the bottom of the connecting rod (62), a lead screw (633) is provided on one side of the slide rail (631), the lead screw (633) is screwed to the slider (632), and a cleaning motor (634) that drives the lead screw (633) to rotate is provided outside the filter box (4).
6. The melt purifying apparatus for oxygen-free copper rod processing according to claim 1, wherein The refining furnace body (1) is provided with a protective sleeve (7) on the outside. The protective sleeve (7) includes a high-temperature heat insulation layer (71), a heat preservation layer (72) and a protective layer (73) from the inside to the outside.
7. The melt purifying apparatus for oxygen-free copper rod processing according to claim 1, wherein The filter box (4) is provided with a support leg (8) at the bottom. The support leg (8) is a height-adjustable structure, including an outer cylinder (81) and an inner rod (82). The inner rod (82) is slidably connected to the outer cylinder (81), and the support leg (8) is provided with an adjustment motor (83) that drives the inner rod (82) to slide along the direction of the outer cylinder (81).
8. The melt purifying apparatus for oxygen-free copper rod processing as recited in claim 1, wherein A sealing cap (9) is provided at the feed inlet (11). A groove (91) is provided on the surface of the sealing cap (9). A protruding sealing ring (92) is provided in the groove (91). A ramp (111) is provided on the inner surface of the feed inlet (11). The ramp (111) and the sealing ring (92) are in contact by compression.