Improved copper rod quality crystallizer

Abstract

The invention discloses an improved copper rod quality crystallizer, relates to the technical field of copper rod crystallizers, and aims at solving the technical problems that T2 copper is high in heat transfer speed, the requirement for the cooling water temperature is high, and the quality and the traction speed of a copper rod can be influenced by supercooling / superheating. The feeding end of the crystallization pipe is provided with a water distribution frame in a threaded mode through a threaded sleeve, the discharging end of the crystallization pipe is provided with a tail sleeve in a threaded mode, and a sealing mechanism, a connecting mechanism and an installing mechanism are sequentially arranged in the crystallization pipe from the feeding end to the discharging end. The graphite pipe has moderate heat transfer efficiency, so that the heat transfer speed between cooling water and copper water can be reduced, and the problem of supercooling / superheating caused by too fast heat transfer of the T2 red copper pipe is avoided. The problems that T2 copper is high in heat transfer speed, the requirement for the cooling water temperature is high, and the quality and the traction speed of a copper rod can be affected by supercooling / superheating are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of copper rod crystallizers, and more particularly to an improved copper rod quality crystallizer. Background Art

[0002] The upper copper rod is formed by rapidly cooling liquid copper through a crystallizer to form a solid copper rod of a certain size and shape. In the entire rod-leading process, the crystallizer is the most critical accessory. The crystallizer structure and cooling method determine the quality and output of the upper copper rod.

[0003] Traditionally, the inner tube of a copper rod crystallizer is typically made of T2 copper. Cooling water is passed through the outer tube, allowing the liquid copper inside to cool and solidify through heat transfer through the copper tube. However, while T2 copper tubes have a high heat transfer efficiency, they are also highly sensitive to cooling water temperature. If the cooling water temperature is too low, the copper liquid can easily solidify rapidly, resulting in crystallization defects. If the water temperature is too high, the solidification rate slows, reducing the pulling speed and potentially resulting in poor copper rod surface quality. To address this issue, we propose an improved copper rod quality crystallizer. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology, adapt to actual needs, and provide an improved copper rod quality crystallizer to solve the technical problems that the current T2 copper has fast heat conduction, high cooling water temperature requirements, and overcooling / overheating will affect the quality and pulling speed of the copper rod.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an improved copper rod quality crystallizer, comprising a crystallization tube and a graphite tube located inside the crystallization tube, wherein the feed end of the crystallization tube is threadedly mounted with a water distribution rack through a threaded sleeve, and the discharge end of the crystallization tube is threadedly mounted with a tail sleeve, and the inside of the crystallization tube is sequentially provided with a sealing mechanism, a connecting mechanism and a mounting mechanism from the feed end to the discharge end, wherein the sealing mechanism comprises a fixed sleeve and a first water inlet hole, the fixed sleeve is fixedly mounted on the inner side of the water distribution rack, the first water inlet hole is opened inside the fixed sleeve, and the connecting mechanism comprises a connecting mechanism. The connecting frame is fixedly mounted inside the crystallization tube, and a plurality of second water inlet holes are circumferentially opened inside the connecting frame. The mounting mechanism includes a positioning ring and a third water inlet hole. At least one positioning ring is provided, and the positioning ring is fixedly mounted on the outside of the graphite tube, and a plurality of third water inlet holes are circumferentially opened inside the positioning ring. The first water inlet hole of the fixed sleeve and the second water inlet hole of the connecting frame together constitute a first water inlet channel, the first water inlet channel is connected to the cavity between the crystallization tube and the graphite tube, and the cavity forms a second water inlet channel through the third water inlet hole of the positioning ring.

[0006] Preferably, the sealing mechanism also includes a fixed sleeve and a mounting groove, the mounting groove is opened on the forward side of the fixed sleeve, a sealing gasket is provided on the inner side of the mounting groove, an elastic wing is provided between the inner wall of the mounting groove and the sealing gasket, one end of the elastic wing is fixedly installed on the inner wall of the mounting groove, and the free side abuts against the sealing gasket.

[0007] Preferably, the connecting mechanism further comprises a sealing groove, a sealing groove for accommodating a sealing gasket is provided on the feeding side of the connecting frame, and a connecting groove is provided on the discharging side of the connecting frame.

[0008] Preferably, the installation mechanism further includes a connecting ring, which is fixedly installed on the feeding side of the graphite tube and is plugged into the connecting groove.

[0009] Preferably, an annular groove is provided inside the crystallization tube, and the positioning ring abuts against the side wall of the annular groove through the pressure generated by radial elastic deformation, so that the crystallization tube and the graphite tube remain concentric.

[0010] Preferably, the axial side wall of the annular groove directly limits the axial displacement of the positioning ring.

[0011] Preferably, when the graphite tube expands due to heat, it radially squeezes the positioning ring, causing the cross section of the third water inlet hole to shrink, thereby reducing the water discharge per unit time.

[0012] Preferably, a water outlet hole is opened at the tail of the tail sleeve, and the cooling water flows through the first water inlet hole, the second water inlet hole, the cavity, the third water inlet hole, and the water outlet hole in sequence to complete the circulation.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention has a moderate heat transfer efficiency through the graphite tube, which can moderate the heat transfer rate between the cooling water and the copper water, and avoid the problem of overcooling / overheating caused by the excessive heat transfer of the T2 copper tube. When the cooling water temperature fluctuates, the graphite tube can act as a buffer layer to adjust the heat transfer rate, so that the copper water can gradually solidify under a more stable temperature gradient, effectively reducing crystallization defects, and ensuring the internal quality and surface finish of the copper rod. The graphite tube is in direct contact with the copper rod, replacing the traditional friction pair of the T2 copper tube and the copper rod, and utilizing the wear resistance of the graphite material to reduce the loss rate of the inner tube. This design greatly extends the service life of the inner tube of the crystallizer, and solves the problem that T2 copper has a fast heat transfer and a high cooling water temperature requirement, and overcooling / overheating will affect the quality and traction speed of the copper rod.

[0015] 2. The present invention also realizes the orderly flow of cooling water from the feed end to the discharge end through the first water inlet channel formed by the first water inlet hole of the fixed sleeve and the second water inlet hole of the connecting frame, and the second water inlet channel formed by the third water inlet hole of the positioning ring, ensuring that the cooling water fully fills the cavity and is discharged through the water outlet hole of the tail sleeve to form a complete cycle. The circumferential distribution design of the second water inlet hole of the connecting frame further ensures that the water flows evenly into the cavity to avoid local insufficient cooling.

[0016] 3. This invention also uses a positioning ring fixed to the outside of the graphite tube. When the graphite tube expands due to the heating of the molten copper, it radially squeezes the positioning ring, causing the cross-section of the third water inlet hole to shrink, reducing the amount of water discharged per unit time. Conversely, at low temperatures, the cross-section of the third water inlet hole recovers, increasing the amount of water discharged. This feature allows adaptive adjustment of cooling intensity, avoiding over- or under-cooling caused by thermal deformation of the graphite tube, stabilizing the solidification rate of the molten copper, and improving the quality of the copper rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the external structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the sealing mechanism of the present invention;

[0020] Figure 4 Schematic diagram of the cross-sectional structure of the sealing mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram of the exploded structure of the sealing mechanism of the present invention;

[0022] Figure 6 Schematic diagram of the cross-sectional structure of the connecting mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of the cross-sectional structure of the installation mechanism of the present invention.

[0024] Explanation of the numbers in the figure: 1. Crystallization tube; 11. Annular groove; 2. Sealing mechanism; 21. Fixed sleeve; 211. First water inlet; 22. Mounting groove; 23. Elastic wing; 24. Sealing gasket; 3. Connecting mechanism; 31. Connecting frame; 32. Sealing groove; 33. Second water inlet; 34. Connecting groove; 4. Water distribution frame; 41. Threaded sleeve; 5. Mounting mechanism; 51. Positioning ring; 52. Third water inlet; 53. Connecting ring; 6. Cavity; 7. Graphite tube; 8. Tail sleeve; 81. Water outlet. DETAILED DESCRIPTION

[0025] Example: Figures 1 to 7As shown, the present invention relates to an improved copper rod quality crystallizer, comprising a crystallization tube 1 and a graphite tube 7 located inside the crystallization tube 1, wherein the feed end of the crystallization tube 1 is threadedly mounted with a water distribution frame 4 through a threaded sleeve 41, and the discharge end of the crystallization tube 1 is threadedly mounted with a tail sleeve 8, and the inside of the crystallization tube 1 is sequentially provided with a sealing mechanism 2, a connecting mechanism 3 and a mounting mechanism 5 from the feed end to the discharge end, the sealing mechanism 2 comprising a fixed sleeve 21 and a first water inlet hole 211, the fixed sleeve 21 being fixedly mounted on the inner side of the water distribution frame 4, the first water inlet hole 211 being opened inside the fixed sleeve 21, and the connecting mechanism 3 comprising a connecting frame 3 1 and the second water inlet hole 33, the connecting frame 31 is fixedly installed inside the crystallization tube 1, and a plurality of second water inlet holes 33 are opened circumferentially inside the connecting frame 31. The mounting mechanism 5 includes a positioning ring 51 and a third water inlet hole 52. There is at least one positioning ring 51, and the positioning ring 51 is fixedly installed outside the graphite tube 7. A plurality of third water inlet holes 52 are opened circumferentially inside the positioning ring 51. When the graphite tube 7 expands thermally, the positioning ring 51 is radially squeezed, resulting in the cross-section of the third water inlet hole 52 shrinking, reducing the water discharge per unit time. An annular groove 11 is opened inside the crystallization tube 1, and the positioning ring 51 is generated by radial elastic deformation. The pressure abuts against the side wall of the annular groove 11, so that the crystallization tube 1 and the graphite tube 7 remain concentric. The axial side wall of the annular groove 11 directly limits the axial displacement of the positioning ring 51. The first water inlet channel is composed of the first water inlet hole 211 of the fixed sleeve 21 and the second water inlet hole 33 of the connecting frame 31. The first water inlet channel is connected to the cavity 6 between the crystallization tube 1 and the graphite tube 7. The cavity 6 forms a second water inlet channel through the third water inlet hole 52 of the positioning ring 51. A water outlet hole 81 is opened at the tail of the tail sleeve 8. The cooling water flows through the first water inlet hole 211, the second water inlet hole 33, the cavity 6, the third water inlet hole 52 and the cooling water outlet hole 81 in sequence. The water hole 52 and the water outlet hole 81 complete the circulation. The addition of the graphite tube 7 and the optimized sealing mechanism 2, connecting mechanism 3 and mounting mechanism 5 in the crystallization tube 1 further improve the stability of the cooling system. Through the first water inlet channel formed by the fixed sleeve 21 and the connecting frame 31 and the second water inlet channel formed by the positioning ring 51, the cooling water can flow evenly in the cavity 6 between the crystallization tube 1 and the graphite tube 7, ensuring a uniform cooling effect; and the squeezing effect of the positioning ring 51 due to the thermal expansion of the graphite tube 7 can adaptively adjust the drainage volume of the third water inlet hole 52, further matching the heat change requirements during the solidification of the molten copper.

[0026] Further, such as Figures 3 to 5As shown, the sealing mechanism 2 also includes a fixed sleeve 21 and a mounting groove 22. The mounting groove 22 is opened on the forward side of the fixed sleeve 21. A sealing gasket 24 is arranged on the inner side of the mounting groove 22. An elastic wing 23 is arranged between the inner wall of the mounting groove 22 and the sealing gasket 24. One end of the elastic wing 23 is fixedly installed on the inner wall of the mounting groove 22, and the free side is in contact with the sealing gasket 24. The sealing gasket 24 and the elastic wing 23 are arranged in the mounting groove 22 on the forward side of the fixed sleeve 21. The elastic wing 23 makes the sealing gasket 24 fit tightly with the sealing groove 32 of the connecting frame 31 through elastic rebound action, and the sealing pressure can be adaptively adjusted according to the threaded installation force of the water distribution frame 4, effectively preventing the cooling water from leaking from the gap between the crystallization tube 1 and the graphite tube 7, ensuring that the cooling medium fully acts on the cavity 6, and improving the cooling efficiency.

[0027] Further, such as Figures 6 and 7 As shown, the connecting mechanism 3 also includes a sealing groove 32. The inlet side of the connecting frame 31 is provided with a sealing groove 32 for accommodating the sealing gasket 24, and the outlet side of the connecting frame 31 is provided with a connecting groove 34. The connecting groove 34 of the connecting mechanism 3 engages with the connecting ring 53 of the graphite tube 7. Combined with the limiting function of the positioning ring 51 and the annular groove 11, the graphite tube 7 is precisely fixed within the crystallization tube 1, preventing the graphite tube 7 from shifting due to vibration or traction during production. Furthermore, the direct contact between the graphite tube 7 and the copper rod reduces wear on the crystallization tube 1. Combined with the stable cooling environment, this further extends the overall service life of the crystallizer, reduces replacement frequency, and lowers labor costs.

[0028] Further, such as Figures 6 and 7 As shown, the mounting mechanism 5 also includes a connecting ring 53, which is fixedly mounted on the feed side of the graphite tube 7 and plugged into the connecting groove 34. The positioning ring 51 of the mounting mechanism 5 abuts the sidewall of the annular groove 11 of the crystallization tube 1 through the pressure generated by radial elastic deformation. At the same time, the axial sidewall of the annular groove 11 limits the axial displacement of the positioning ring 51, ensuring that the graphite tube 7 and the crystallization tube 1 remain concentric. This design avoids the problem of uneven cooling gaps caused by offset installation of the graphite tube 7, ensuring that the cooling water in the cavity 6 evenly surrounds the graphite tube 7, ensuring a stable temperature distribution during the solidification of the molten copper and reducing crystallization defects.

[0029] Working principle: This embodiment provides an improved copper rod quality crystallizer. When in use, the graphite tube 7 is first inserted into the interior of the crystallization tube 1 from the tail end of the crystallization tube 1, so that the insertion connecting ring 53 is connected to the connecting groove 34 opened at the tail side end of the connecting frame 31 fixedly installed inside the crystallization tube 1. During the insertion process, the positioning ring 51 fixedly installed on the outside of the graphite tube 7 will be plugged into the annular groove 11 opened on the inner wall of the crystallization tube 1 in turn, and the outer side of the positioning ring 51 is directly inserted into the annular groove 11 opened on the inner wall of the crystallization tube 1. The radial pressure generated by elastic rebound realizes the concentric positioning of the crystallization tube 1 and the graphite tube 7, and the axial displacement of the positioning ring 51 is limited by the side wall of the annular groove 11 to ensure that the support position is stable.

[0030] The water distribution frame 4 is threadedly installed on the end of the crystallization tube 1 through the threaded sleeve 41 fixedly installed on the inner wall of the water distribution frame 4. During the threaded installation process, the fixed sleeve 21 fixedly installed on the inner side of the water distribution frame 4 will penetrate deeper. During the penetration process, the sealing gasket 24 on the pushing side will be squeezed according to the force of the threaded installation. The pushing side of the fixed sleeve 21 is provided with a mounting groove 22, and the elastic wing 23 is fixedly installed between the mounting groove 22 and the sealing gasket 24. After the sealing gasket 24 is squeezed, the elastic wing 23 will be compressed, and then the elastic wing 23 will store energy and rebound, so that the sealing gasket 24 is closer to the inside of the sealing groove 32 opened at the corresponding position of the connecting frame 31, and then the sealing operation is performed.

[0031] At the same time, a first water inlet hole 211 is opened inside the fixed sleeve 21. When cooling water comes in, it will enter the cavity 6 between the crystallization tube 1 and the graphite tube 7 through a first water inlet channel formed by the first water inlet hole 211 and a plurality of second water inlet holes 33 opened circumferentially on the connecting frame 31. After entering the cavity 6, because the inner wall of the third water inlet hole 52 is also circumferentially opened with a third water inlet hole 52, a second water inlet channel is formed, and the cooling water will flow from the inside of the third water inlet hole 52 to the tail, and finally be discharged from the water outlet 81.

[0032] During the processing, the graphite tube 7 will expand and contract due to heat. When it expands, it will squeeze the positioning ring 51, and then squeeze the hole of the third water inlet 52, reducing the discharge of cooling water, thereby reducing the flow rate of the cooling water, and thus increasing the retention time of the cooling water inside the cavity 6, thereby better performing the cooling operation.

[0033] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. An improved copper rod quality crystallizer, comprising a crystallization tube (1) and a graphite tube (7) located inside the crystallization tube (1), characterized in that: The feed end of the crystallization tube (1) is threadedly mounted with a water distribution frame (4) through a threaded sleeve (41), the discharge end of the crystallization tube (1) is threadedly mounted with a tail sleeve (8), and the interior of the crystallization tube (1) is provided with a sealing mechanism (2), a connecting mechanism (3) and a mounting mechanism (5) in sequence from the feed end to the discharge end; The sealing mechanism (2) comprises a fixed sleeve (21) and a first water inlet hole (211), wherein the fixed sleeve (21) is fixedly mounted on the inner side of the water distribution frame (4), and the first water inlet hole (211) is provided inside the fixed sleeve (21); The connecting mechanism (3) comprises a connecting frame (31) and second water inlet holes (33); the connecting frame (31) is fixedly mounted inside the crystallization tube (1); and a plurality of second water inlet holes (33) are circumferentially formed inside the connecting frame (31); The mounting mechanism (5) comprises a positioning ring (51) and a third water inlet hole (52), at least one positioning ring (51) is provided, and the positioning ring (51) is fixedly mounted on the outside of the graphite tube (7), and a plurality of third water inlet holes (52) are circumferentially opened inside the positioning ring (51); A first water inlet channel is formed by the first water inlet hole (211) of the fixed sleeve (21) and the second water inlet hole (33) of the connecting frame (31), wherein the first water inlet channel is connected to the cavity (6) between the crystallization tube (1) and the graphite tube (7), and the cavity (6) forms a second water inlet channel through the third water inlet hole (52) of the positioning ring (51).

2. The improved copper rod quality crystallizer according to claim 1, characterized in that: The sealing mechanism (2) further comprises a fixed sleeve (21) and a mounting groove (22), wherein the mounting groove (22) is provided on the forward side of the fixed sleeve (21), a sealing gasket (24) is provided on the inner side of the mounting groove (22), an elastic wing (23) is provided between the inner wall of the mounting groove (22) and the sealing gasket (24), one end of the elastic wing (23) is fixedly mounted on the inner wall of the mounting groove (22), and the free side abuts against the sealing gasket (24).

3. The improved copper rod quality crystallizer according to claim 2, characterized in that: The connecting mechanism (3) further comprises a sealing groove (32), the sealing groove (32) capable of accommodating a sealing gasket (24) is provided on the feeding side of the connecting frame (31), and a connecting groove (34) is provided on the discharging side of the connecting frame (31).

4. The improved copper rod quality crystallizer according to claim 3, characterized in that: The mounting mechanism (5) further comprises a connecting ring (53), wherein the connecting ring (53) is fixedly mounted on the feeding side of the graphite tube (7), and the connecting ring (53) is plugged into the connecting groove (34).

5. The improved copper rod quality crystallizer according to claim 4, characterized in that: An annular groove (11) is provided inside the crystallization tube (1), and the positioning ring (51) abuts against the side wall of the annular groove (11) through pressure generated by radial elastic deformation, so that the crystallization tube (1) and the graphite tube (7) remain concentric.

6. The improved copper rod quality crystallizer according to claim 5, characterized in that: The axial side wall of the annular groove (11) directly limits the axial displacement of the positioning ring (51).

7. The improved copper rod quality crystallizer according to claim 4, characterized in that: When the graphite tube (7) expands thermally, it radially squeezes the positioning ring (51), causing the cross-section of the third water inlet hole (52) to shrink, thereby reducing the water discharge per unit time.

8. The improved copper rod quality crystallizer according to claim 4, characterized in that: The tail sleeve (8) is provided with a water outlet hole (81) at the tail end, and cooling water flows sequentially through the first water inlet hole (211), the second water inlet hole (33), the cavity (6), the third water inlet hole (52), and the water outlet hole (81) to complete the circulation.

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