A crystallizer for producing a red copper ingot

Abstract

The application relates to the field of metal casting equipment, and discloses a crystallizer for preparing red copper ingot, which comprises a crystallizer body and a liquid storage tank. A crystallization layer is arranged in the crystallizer body. A cooling cavity is formed between the crystallization layer and the crystallizer body. An inner cooling pipe is arranged in the cooling cavity. An outer cooling channel is arranged on the inner wall of the crystallizer body. The outer cooling channel and the inner cooling pipe are both arranged in a spiral mode. A convection conveying assembly is mounted on the outer wall of the liquid storage tank. The convection conveying assembly comprises a first suction pump and a second suction pump. In the utility model, the cooling liquid is conveyed in opposite directions by the convection conveying assembly. The outer cooling channel and the inner cooling pipe are arranged in a spiral mode and are staggered with each other. The contact area and the path of the cooling liquid and the crystallization layer are greatly increased. Each part of the crystallization layer is uniformly and efficiently cooled. Stress concentration, cracks, shrinkage holes and other defects in the red copper ingot are avoided. The mechanical properties and the processing performance of the ingot are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of metal casting equipment, and in particular to a crystallizer for preparing copper ingots. Background Technology

[0002] In the production process of copper ingots, the crystallizer is an extremely critical piece of equipment. It directly determines the solidification quality of the copper molten liquid as it transforms from a liquid to a solid state. It is the core device that ensures the uniformity of the internal structure, the smoothness of the surface, and the mechanical properties of the ingot.

[0003] Traditional crystallizers have many shortcomings in structural design and cooling methods, which makes it difficult to improve the quality of ingots and keep production costs high. For example, some existing crystallizers cool unevenly, causing stress concentration inside the copper ingots, which easily leads to defects such as cracks and shrinkage cavities, seriously affecting the mechanical and processing properties of the ingots. Therefore, a crystallizer for preparing copper ingots is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a crystallizer for preparing copper ingots, so as to solve the problems mentioned in the background art.

[0005] The crystallizer for preparing copper ingots provided in this application adopts the following technical solution:

[0006] A crystallizer for preparing copper ingots includes a crystallizer body and a storage tank. A crystallization layer is provided inside the crystallizer body, and a cooling cavity is formed between the crystallization layer and the crystallizer body. An inner cooling pipe is provided inside the cooling cavity, and an outer cooling channel is provided on the inner wall of the crystallizer body. Both the outer cooling channel and the inner cooling pipe are spirally arranged, and the outer cooling channel and the inner cooling pipe are staggered.

[0007] The outer wall of the liquid storage tank is equipped with a convection conveying assembly, which includes a pump 1 and a pump 2. The pump 1 and the pump 2 are fixedly installed on the outer walls of both sides of the liquid storage tank. The conveying end of the pump 1 is connected to the bottom end of the external cooling channel through a liquid delivery pipe 1, and the conveying end of the pump 2 is connected to the top end of the internal cooling pipe through a liquid delivery pipe 2.

[0008] Preferably, the convection conveying assembly further includes a liquid outlet pipe one and a liquid outlet pipe two, both of which are located at the top of the liquid storage tank and are connected to the inside of the liquid storage tank. The top end of the external cooling channel is connected to the liquid outlet pipe one, and the bottom end of the internal cooling pipe is connected to the liquid outlet pipe two.

[0009] Preferably, a cooling mechanism is installed on the inner wall of the liquid storage tank. The cooling mechanism includes a thermoelectric cooler, a heat pipe, heat dissipation fins, and a cooling fan. The thermoelectric cooler is fixedly connected to the inner wall of the liquid storage tank by bolts. A rubber gasket is provided between the thermoelectric cooler and the inner wall of the liquid storage tank. The rubber gasket is tightly fitted to the thermoelectric cooler and the liquid storage tank.

[0010] Preferably, the plurality of heat pipes are uniformly and fixedly connected to the cold end of the semiconductor cooling chip, the plurality of heat dissipation fins are fixedly connected to the hot end of the semiconductor cooling chip, and the plurality of heat dissipation fins extend out of the outside of the liquid storage tank.

[0011] Preferably, the cooling fan is fixedly mounted on the outer wall of the liquid storage tank by bolts, and the cooling fan is used to blow air into the gaps between multiple heat dissipation fins.

[0012] Preferably, the top outer wall of the liquid storage tank is provided with an injection port, and the bottom outer wall of the liquid storage tank is provided with a drain port.

[0013] Preferably, the crystalline layer is made of a copper alloy material.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] The coolant is transported in opposite directions by a convection conveying component. Combined with spirally arranged and intersecting external cooling channels and internal cooling pipes, the contact area and path between the coolant and the crystallization layer are greatly increased. This ensures uniform and efficient cooling of all parts of the crystallization layer, avoiding stress concentration, cracks, shrinkage cavities, and other defects inside the copper ingot. This significantly improves the mechanical and machinability of the ingot. At the same time, by increasing the ingot yield, realizing coolant recycling, and ensuring production continuity, it reduces raw material waste, rework costs, and coolant consumption costs. While improving ingot quality, it effectively controls production costs and overcomes the shortcomings of traditional crystallizers, such as difficulty in improving ingot quality and high production costs. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of an embodiment of the application;

[0017] Figure 2 This is an internal cross-sectional view of the crystallizer body in the embodiment of the application;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is an exploded schematic diagram of the liquid storage tank in the embodiment of the application.

[0020] Explanation of reference numerals in the attached diagram: 1. Crystallizer body; 2. Crystallization layer; 3. Cooling chamber; 4. Inner cooling pipe; 5. Outer cooling channel; 6. Storage tank; 7. Pump 1; 8. Inlet pipe 1; 9. Outlet pipe 1; 10. Pump 2; 11. Inlet pipe 2; 12. Outlet pipe 2; 13. Semiconductor cooling chip; 14. Rubber gasket; 15. Heat dissipation fins; 16. Cooling fan; 17. Heat pipe; 18. Inlet; 19. Drain. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] This application discloses a crystallizer for preparing copper ingots. (Refer to...) Figure 1-4 A crystallizer for preparing copper ingots includes a crystallizer body 1 and a liquid storage tank 6. A crystallization layer 2 is provided inside the crystallizer body 1. A cooling cavity 3 is formed between the crystallization layer 2 and the crystallizer body 1. An inner cooling pipe 4 is provided inside the cooling cavity 3. An outer cooling channel 5 is provided on the inner wall of the crystallizer body 1. Both the outer cooling channel 5 and the inner cooling pipe 4 are spirally arranged and are interleaved.

[0023] The outer wall of the liquid storage tank 6 is equipped with a convection conveying assembly, which includes a pump 7, a pump 10, an outlet pipe 9, and an outlet pipe 12. Pump 7 and pump 10 are fixedly installed on the outer walls of both sides of the liquid storage tank 6. The conveying end of pump 7 is connected to the bottom end of the outer cooling channel 5 through a delivery pipe 8. The conveying end of pump 10 is connected to the top end of the inner cooling pipe 4 through a delivery pipe 11. The outlet pipes 9 and 12 are both located at the top of the liquid storage tank 6 and are connected to the inside of the liquid storage tank 6. The top end of the outer cooling channel 5 is connected to the outlet pipe 9, and the bottom end of the inner cooling pipe 4 is connected to the outlet pipe 12.

[0024] A cooling mechanism is installed on the inner wall of the liquid storage tank 6. The cooling mechanism includes a thermoelectric cooler 13, heat pipes 17, heat dissipation fins 15, and a cooling fan 16. The thermoelectric cooler 13 is fixedly connected to the inner wall of the liquid storage tank 6 by bolts. A rubber gasket 14 is provided between the thermoelectric cooler 13 and the inner wall of the liquid storage tank 6. The rubber gasket 14 is tightly fitted to the contact surface between the thermoelectric cooler 13 and the liquid storage tank 6. Multiple heat pipes 17 are evenly fixedly connected to the cold end of the thermoelectric cooler 13. Multiple heat dissipation fins 15 are fixedly connected to the hot end of the thermoelectric cooler 13 and extend to the outside of the liquid storage tank 6. The cooling fan 16 is fixedly installed on the outer wall of the liquid storage tank 6 by bolts. The air outlet of the cooling fan 16 is set towards the gap between the multiple heat dissipation fins 15.

[0025] The top outer wall of the storage tank 6 is provided with an injection port 18, and the bottom outer wall of the storage tank 6 is provided with a drain port 19. The crystallization layer 2 is made of copper alloy material.

[0026] The implementation principle of a crystallizer for preparing copper ingots in this application embodiment is as follows: When using this crystallizer to prepare copper ingots, the preliminary preparation work must ensure that the connection of each component is firm and there is no looseness. First, an appropriate amount of coolant is injected into the storage tank 6 through the injection port 18. The selection of coolant must take into account its thermal conductivity and stability to ensure the durability of the cooling effect.

[0027] When the cooling mechanism is activated, the thermoelectric cooler 13 starts working after being powered on. Its cold end quickly generates cooling energy, which is transferred to the coolant in the liquid tank 6 through the heat pipe 17 connected to it, thus achieving rapid cooling of the coolant. At the same time, the hot end of the thermoelectric cooler 13 generates a large amount of heat, which is transferred to the heat sink 15 connected to it through heat conduction. In order to avoid heat accumulation affecting the cooling efficiency of the thermoelectric cooler 13, the cooling fan 16 is activated. After the cooling fan 16 starts running, it blows the outside air into the gaps between the heat sink 15, and uses the air flow to remove the heat on the heat sink 15, thereby ensuring that the thermoelectric cooler 13 can continuously and stably perform its cooling function.

[0028] Then, pump 7 and pump 10 in the convection transport assembly are activated. The key feature of the convection transport assembly is that it can transport coolant in opposite directions. When pump 7 is working, it transports the cooled coolant in the reservoir 6 to the bottom of the outer cooling channel 5 through the delivery pipe 8. After entering the outer cooling channel 5, the coolant flows upward along the spiral channel. At the same time, pump 10 is working, transporting the cooled coolant in the reservoir 6 to the top of the inner cooling pipe 4 through the delivery pipe 11. After entering the inner cooling pipe 4, the coolant flows downward along the spiral pipe. In this way, the coolant in the outer cooling channel 5 flows upward and the coolant in the inner cooling pipe 4 flows downward, forming opposite flow directions.

[0029] During the relative flow process, the coolant in the outer cooling channel 5 comes into full contact with the wall of the outer cooling channel 5 inside the crystallizer body 1, absorbing the heat transferred from the outside of the crystallization layer 2. After absorbing the heat, the temperature of the coolant rises and flows out from the top of the outer cooling channel 5, returning to the storage tank 6 through the outlet pipe 19, and undergoing the cooling cycle again. The coolant in the inner cooling pipe 4 comes into close contact with the inside of the crystallization layer 2, absorbing the heat from the inside of the crystallization layer 2. After absorbing the heat, the temperature of the coolant also rises and flows out from the bottom of the inner cooling pipe 4, returning to the storage tank 6 through the outlet pipe 212, and participating in the next cooling cycle.

[0030] This relative transport direction, combined with the spiral arrangement and staggered distribution of the outer cooling channel 5 and the inner cooling pipe 4, greatly increases the contact path and contact area between the coolant and the crystallization layer 2, so that all parts of the crystallization layer 2 can be cooled evenly and efficiently. In the relative flow, the coolant can more comprehensively cover the inner and outer sides of the crystallization layer 2, avoiding local insufficient or excessive cooling. This ensures that the copper liquid in the crystallization layer 2 can cool and crystallize evenly and quickly at the expected speed, effectively reducing internal defects of copper ingots caused by uneven cooling and improving the quality of copper ingots.

[0031] In the entire device, the rubber gasket 14 plays an important role. It fits tightly between the contact surfaces of the semiconductor cooling chip 13 and the liquid storage tank 6, which not only enhances the sealing between the two and prevents leakage of coolant during the flow of coolant in the liquid storage tank 6, but also reduces heat transfer loss between the contact surfaces and improves energy utilization efficiency.

[0032] When the coolant needs to be replaced, simply open the drain port 19 to drain the old coolant from the reservoir 6. After the old coolant has been completely drained, close the drain port 19 and then inject new coolant through the injection port 18. The operation is simple and convenient.

[0033] The crystalline layer 2 is made of copper alloy material, which has good thermal conductivity and can quickly transfer the heat released by the copper liquid during the crystallization process to the surrounding cooling medium, further accelerating the cooling and crystallization speed of the copper liquid, while also ensuring the uniformity of heat transfer, providing favorable conditions for the high-quality forming of copper ingots.

[0034] Throughout the entire copper ingot preparation process, the continuous cooling of the cooling mechanism, the circulation of coolant by the convection conveying components in opposite directions, and the coordinated operation of various components enable the crystallizer to work efficiently and stably, providing reliable equipment support for the production of copper ingots. It is worth noting that after the molten copper completes crystallization in the crystallizer body 1, it will be quickly discharged by the straightening machine to form copper billets. These copper billets will be transported to the subsequent processing stages for rolling, forging, cutting, and other processes, ultimately becoming various copper products that meet the requirements.

[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0036] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0037] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crystallizer for preparing copper ingots, comprising a crystallizer body (1) and a storage tank (6), characterized in that: The crystallizer body (1) has a crystallization layer (2) inside, and a cooling cavity (3) is formed between the crystallization layer (2) and the crystallizer body (1). An inner cooling pipe (4) is provided inside the cooling cavity (3). An outer cooling channel (5) is provided on the inner wall of the crystallizer body (1). The outer cooling channel (5) and the inner cooling pipe (4) are both spirally arranged, and the outer cooling channel (5) and the inner cooling pipe (4) are interleaved. The outer wall of the liquid storage tank (6) is equipped with a convection conveying assembly, which includes a pump one (7) and a pump two (10). The pump one (7) and the pump two (10) are fixedly installed on the outer walls of both sides of the liquid storage tank (6). The conveying end of the pump one (7) is connected to the bottom end of the outer cooling channel (5) through the liquid delivery pipe one (8). The conveying end of the pump two (10) is connected to the top end of the inner cooling pipe (4) through the liquid delivery pipe two (11).

2. The crystallizer for preparing copper ingots according to claim 1, characterized in that: The convection conveying assembly also includes a liquid outlet pipe one (9) and a liquid outlet pipe two (12). The liquid outlet pipe one (9) and the liquid outlet pipe two (12) are both located on the top of the liquid storage tank (6) and are connected to the inside of the liquid storage tank (6). The top of the external cooling channel (5) is connected to the liquid outlet pipe one (9), and the bottom of the internal cooling pipe (4) is connected to the liquid outlet pipe two (12).

3. The crystallizer for preparing copper ingots according to claim 2, characterized in that: The inner wall of the liquid storage tank (6) is equipped with a cooling mechanism, which includes a thermoelectric cooler (13), a heat pipe (17), heat dissipation fins (15) and a cooling fan (16). The thermoelectric cooler (13) is fixedly connected to the inner wall of the liquid storage tank (6) by bolts. A rubber gasket (14) is provided between the thermoelectric cooler (13) and the inner wall of the liquid storage tank (6). The rubber gasket (14) is tightly attached to the thermoelectric cooler (13) and the liquid storage tank (6).

4. The crystallizer for preparing copper ingots according to claim 3, characterized in that: Multiple heat pipes (17) are uniformly and fixedly connected to the cold end of the semiconductor cooling chip (13), and multiple heat dissipation fins (15) are fixedly connected to the hot end of the semiconductor cooling chip (13). Multiple heat dissipation fins (15) extend out of the outside of the liquid storage tank (6).

5. A crystallizer for preparing copper ingots according to claim 4, characterized in that: The cooling fan (16) is fixedly installed on the outer wall of the liquid storage tank (6) by bolts. The cooling fan (16) is used to blow air into the gap between multiple heat dissipation fins (15).

6. The crystallizer for preparing copper ingots according to claim 1, characterized in that: The top outer wall of the liquid storage tank (6) is provided with an injection port (18), and the bottom outer wall of the liquid storage tank (6) is provided with a drain port (19).

7. The crystallizer for preparing copper ingots according to claim 1, characterized in that: The crystalline layer (2) is made of copper alloy material.

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