An outer wall cooling device of an isothermal normalizing quick cooling chamber

Abstract

The utility model relates to alloy heat treatment equipment technical field, concretely relates to a kind of outer wall cooling device of isothermal normalizing quick cooling chamber, and specific technical scheme is: a kind of outer wall cooling device of isothermal normalizing quick cooling chamber, including quick cooling chamber, cold air pipe is provided in the quick cooling chamber, and several air outlets are provided on the cold air pipe;The quick cooling chamber includes outer furnace body and the inner furnace body being set in outer furnace body, cavity is arranged between the outer furnace body and the inner furnace body, the air outlet of the cold air pipe is located in the cavity, air inlet pipe is connected on the cold air pipe, the air inlet pipe is stretched out outer furnace body, and air is admitted to air inlet pipe by air blower, and air outlet pipe is connected on the outer furnace body.The utility model solves the problem that the existing technology is cooled by water cooling to quick cooling chamber in different seasons, which leads to the deviation of cooling rate and the generation of bainite in workpiece.

Description

Technical Field

[0001] This utility model relates to the technical field of alloy heat treatment equipment, specifically to an outer wall cooling device for an isothermal normalizing rapid cooling chamber. Background Technology

[0002] Isothermal normalizing can give mechanical parts excellent mechanical properties, high strength and good toughness, and fully utilize the potential of materials. In addition, it can reduce heat treatment deformation and improve grinding efficiency during the final heat treatment, making it the best way to save energy, materials and reduce consumption.

[0003] Currently, isothermal normalizing processes are mostly carried out in continuous furnace production lines. In existing technologies, the cooling of the rapid cooling chamber relies on circulating water to remove heat. However, the temperature of the circulating water differs significantly between winter and summer, and the varying weight of each tray at the time of loading leads to deviations in the actual cooling rate of the workpiece. To avoid excessively low rapid cooling chamber temperatures that could cause bainite formation in the workpiece, the minimum temperature is often set slightly higher when designing the rapid cooling process, but this is detrimental to the microstructure transformation of the workpiece. Therefore, this invention addresses this issue by installing a cooling device on the outer wall of the isothermal zone behind the rapid cooling chamber. The workpiece temperature is detected by thermocouples, and the cooling device is switched on and off to further cool the workpiece to the optimal temperature. This effectively prevents bainite formation, ensures a more reasonable workpiece temperature, and promotes a more thorough microstructure transformation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides an external wall cooling device for an isothermal normalizing rapid cooling chamber, which solves the problem in existing technologies where water cooling of the rapid cooling chamber in different seasons leads to deviations in cooling rate, resulting in the formation of bainite in the workpiece.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses an external wall cooling device for an isothermal normalizing rapid cooling chamber, including a rapid cooling chamber, a cold air duct is provided inside the rapid cooling chamber, and a plurality of air outlets are provided on the cold air duct; the rapid cooling chamber includes an outer furnace body and an inner furnace body disposed inside the outer furnace body, a cavity is provided between the outer furnace body and the inner furnace body, the air outlets of the cold air duct are located in the cavity, an air inlet pipe is connected to the cold air duct, the air inlet pipe extends out of the outer furnace body, and air is introduced into the air inlet pipe by a blower, and an exhaust pipe is connected to the outer furnace body.

[0007] Preferably, a hot air pipe is connected to the outer furnace body, one end of the hot air pipe is closed, the air inlet pipe passes through the closed end of the hot air pipe and extends out of the hot air pipe, the air inlet pipe and the hot air pipe are coaxially arranged, and the exhaust pipe is connected to the side wall of the hot air pipe.

[0008] Preferably, the outlet end of the exhaust pipe is bent upwards.

[0009] Preferably, the cold air duct is disposed within the cavity and is arranged along the axial direction of the inner furnace body.

[0010] Preferably, the cold air duct is provided with multiple air inlet pipes, one end of which extends out of the outer furnace body and is connected to the main pipe, and the blower is installed on the main pipe.

[0011] Preferably, the air inlet pipe is equipped with a valve.

[0012] Preferably, the cold air duct is embedded in the furnace wall of the inner furnace body, and an air outlet duct is provided on the cold air duct, with the air outlet of the air outlet duct located in the cavity; the air inlet duct passes through the cavity and extends into the furnace wall of the inner furnace body to connect with the cold air duct.

[0013] Preferably, the cold air ducts are respectively installed inside the furnace walls on both sides of the inner furnace body, and the two cold air ducts installed in a corresponding manner are connected by a connecting pipe. The connecting pipe is connected to a branch pipe, and the branch pipe and the connecting pipe are also provided with several air outlet pipes.

[0014] Preferably, multiple cold air ducts are provided, and the end of the air inlet ducts connected to the cold air ducts on the same side that extends out of the outer furnace body is connected to the main duct. The blower is provided on the main duct.

[0015] Preferably, the branch pipe and connecting pipe are embedded in the furnace wall at the top of the inner furnace body.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model involves installing a cold air duct within the cavity between the outer and inner furnace bodies. Several air outlets are installed on the cold air duct, which is connected to an air inlet duct. Cold air is introduced into the air inlet duct by a blower, thereby cooling the inner furnace body. Hot air within the cavity is discharged through an exhaust duct installed on the outer furnace body. Several branch pipes can be installed on the cold air duct within the cavity as needed, each with its own air outlet, to achieve rapid cooling of the inner furnace body and bring the workpiece to its optimal temperature, effectively suppressing the formation of bainite. Simultaneously, a hot air duct is connected to the outer furnace body and fitted over the air inlet duct to cool the discharged hot air, preventing excessively high temperatures that could affect the surrounding environment and workers.

[0018] 2. This utility model achieves the purpose of cooling the inner furnace body by setting the cold air pipe in the inner wall of the inner furnace body, and setting the cold air pipe on the cold air pipe with the air outlet located in the cavity. The cold air introduced into the cold air pipe cools the inner furnace body and is then discharged into the cavity through the air outlet, and then discharged to the fast cooling room through the hot air pipe and the exhaust pipe. This achieves the purpose of cooling the inner furnace body and thus cooling the workpiece. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention (one embodiment of the cold air duct);

[0020] Figure 2 for Figure 1 A sectional view;

[0021] Figure 3 This is another implementation method for cold air ducts;

[0022] Figure 4 for Figure 3 Top view;

[0023] Figure 5 for Figure 4 AA view;

[0024] Figure 6 for Figure 3 Distribution of intercooled air ducts, connecting pipes, and branch pipes;

[0025] In the diagram: 1. Outer furnace body; 2. Inner furnace body; 3. Cavity; 4. Cold air duct; 5. Air inlet duct; 6. Air outlet duct; 7. Hot air duct; 8. Main duct; 9. Outlet duct; 10. Connecting duct; 11. Branch duct. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Unless otherwise specified, the technical means used in the implementation examples are conventional means well known to those skilled in the art.

[0028] refer to Figures 1-6 This utility model discloses an external wall cooling device for an isothermal normalizing rapid cooling chamber, comprising a rapid cooling chamber, wherein a cold air duct 4 is provided inside the rapid cooling chamber, and the cold air duct 4 is provided with several air outlets; the rapid cooling chamber includes an outer furnace body 1 and an inner furnace body 2 disposed within the outer furnace body 1, and a cavity 3 is provided between the outer furnace body 1 and the inner furnace body 2, the air outlets of the cold air duct 4 are located within the cavity 3, and an air inlet pipe 5 is connected to the cold air duct 4, extending outside the outer furnace body 1, and air is introduced into the air inlet pipe 5 by a blower; an exhaust pipe 6 is connected to the outer furnace body 1. It should be noted that: the exhaust pipe is connected to the outer furnace body, so that the hot air in the cavity is discharged through the exhaust pipe.

[0029] Furthermore, a hot air duct 7 is connected to the outer furnace body 1. One end of the hot air duct 7 is closed, and the air inlet duct 5 passes through the closed end of the hot air duct 7 and extends out of the hot air duct 7. The exhaust duct 6 is connected to the side wall of the hot air duct 7. It should be noted that in order to cool the exhaust hot air, the hot air duct and the air inlet duct are fitted together, that is, the hot air duct is fitted onto the cold air duct, and the connection between the air inlet duct and the hot air duct is sealed. The air inlet duct 5 and the hot air duct 7 are coaxially arranged.

[0030] Furthermore, the outlet end of the exhaust pipe 6 is bent upwards to prevent hot air from blowing directly onto the area where people are active, thus reducing the risk of burns.

[0031] In this invention, the cold air duct has two installation methods: one is to install it directly in the cavity, and the other is to embed it in the furnace wall of the inner furnace body. The specific installation methods are as follows:

[0032] refer to Figures 1-2 As shown, the cold air duct 4 is disposed within the cavity 3 and is arranged along the axial direction of the inner furnace body 2. The cavity is annular, surrounding the inner furnace body, so that the incoming cold air contacts the outer wall of the inner furnace body. The cold air duct can be closed at both ends. Multiple branch pipes can be installed on the cold air duct within the cavity as needed. The position and distribution of the branch pipes within the cavity can be determined according to actual needs, ensuring uniform distribution of the incoming cold air to achieve uniform cooling. Additionally, several air outlets are also provided on the branch pipes, allowing the incoming cold air to spread throughout the cavity and uniformly cool the inner furnace body. Similarly, other pipelines can be connected to both ends of the cold air duct as needed. Within the inner furnace body, the workpiece moves along the axial direction of the inner furnace body. Furthermore, cold air ducts can be installed on both sides of the inner furnace body, with the exhaust duct 6, inlet duct 5, and hot air duct 7 arranged in the same manner.

[0033] Furthermore, to increase cooling efficiency, multiple air inlet pipes 5 are connected to the cold air duct 4. One end of each air inlet pipe 5 extending from the outer furnace body 1 is connected to the main pipe 8, and the blower is mounted on the main pipe 8. Valves are installed on each air inlet pipe 5. It should be noted that each air inlet pipe is connected to the main pipe, and the blower is located at one end of the main pipe. By introducing air into the main pipe, cold air is allowed to enter the cavity through the air inlet pipes, achieving the purpose of cooling. In one implementation, valves are installed on the air inlet pipes extending outside the hot air duct. Based on the monitored workpiece temperature, the amount of cold air entering is controlled by controlling the number of valves opened, thereby controlling the cooling rate and cooling temperature. Additionally, the number of air inlet pipes is set according to the length of the cooling chamber. Multiple sets of air inlet pipes can also be installed as needed, with multiple air inlet pipes forming a group.

[0034] refer to Figures 3-6, the cold air duct 4 is embedded in the furnace wall of the inner furnace body 2. An air outlet duct 9 is provided on the cold air duct 4, and the air outlet of the air outlet duct 9 is located in the cavity 3; the air inlet duct 5 passes through the cavity 3 and extends into the furnace wall of the inner furnace body 2 to be connected to the cold air duct 4. It should be noted that: one end of the air outlet duct extends into the furnace wall of the inner furnace body to be connected to the cold air duct, and the number of air outlet ducts is set conventionally according to the length of the cold air duct. As one implementation manner, the cold air duct is embedded in the side furnace wall of the inner furnace body. As another implementation manner, the cold air ducts 4 are correspondingly arranged in the furnace walls on both sides of the inner furnace body 2, and the two correspondingly arranged cold air ducts 4 are connected through a connecting pipe 10. A branch pipe 11 is connected to the connecting pipe 10, and a number of air outlet ducts 9 are also provided on the branch pipe 11 and the connecting pipe 10. As Figure 6 shown, the cold air duct 4 and the branch pipe 11 are arranged along the axial direction of the inner furnace body, while the connecting pipe is perpendicular to the cold air duct and the branch pipe. The air outlet ducts on the cold air duct extend out of the side wall of the inner furnace body, so that the air outlets are located in the cavity.

[0035] Refer to Figure 5 shown, the inner furnace body is placed in the outer furnace body, and the bottom surface of the inner furnace body contacts the inner bottom surface of the outer furnace body, so that the formed cavity is in a "冂" shape. The branch pipe 11 and the connecting pipe 10 are embedded in the furnace wall at the top of the inner furnace body 2.

[0036] Furthermore, refer to Figure 6 shown, there are multiple cold air ducts 4, and one ends of the air inlet ducts 5 connected to the cold air ducts 4 on the same side all extend out of the outer furnace body 1 and are connected to the main pipe 8, and the blower is arranged on the main pipe 8.

[0037] Both of the two setting methods of the cold air duct disclosed by the present utility model can achieve heat exchange of the inner furnace body, thereby cooling the inner furnace body and achieving the purpose of cooling the workpiece.

[0038] When using the present utility model, the temperature inside the outer furnace body or the workpiece is monitored through the control box provided on the outer furnace body, and the opening and closing of the blower are controlled through the control box, so as to automatically cool the rapid cooling chamber, make the workpiece drop to the optimal temperature, and prevent the generation of bainite.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0040] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A cooling device for the outer wall of an isothermal normalizing rapid cooling chamber, comprising a rapid cooling chamber, characterized in that: The rapid cooling chamber is provided with a cold air duct (4) and a number of air outlets are provided on the cold air duct (4); the rapid cooling chamber includes an outer furnace body (1) and an inner furnace body (2) provided in the outer furnace body (1), a cavity (3) is provided between the outer furnace body (1) and the inner furnace body (2), the air outlet of the cold air duct (4) is located in the cavity (3), an air inlet pipe (5) is connected to the cold air duct (4), the air inlet pipe (5) extends out of the outer furnace body (1) and air is introduced into the air inlet pipe (5) by a blower, and an exhaust pipe (6) is connected to the outer furnace body (1).

2. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to claim 1, characterized in that: The outer furnace body (1) is connected to a hot air pipe (7). One end of the hot air pipe (7) is closed. The air inlet pipe (5) passes through the closed end of the hot air pipe (7) and extends out of the hot air pipe (7). The air inlet pipe (5) and the hot air pipe (7) are coaxially arranged. The exhaust pipe (6) is connected to the side wall of the hot air pipe (7).

3. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to claim 2, characterized in that: The outlet end of the exhaust pipe (6) is bent upwards.

4. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to any one of claims 1-3, characterized in that: The cold air duct (4) is located inside the cavity (3) and is arranged along the axial direction of the inner furnace body (2).

5. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to claim 4, characterized in that: The cold air duct (4) is provided with multiple air inlet pipes (5), one end of which extends out of the outer furnace body (1) and is connected to the main pipe (8), and the blower is provided on the main pipe (8).

6. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to claim 5, characterized in that: A valve is installed on the air inlet pipe (5).

7. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to any one of claims 1-3, characterized in that: The cold air duct (4) is embedded in the furnace wall of the inner furnace body (2). An air outlet duct (9) is provided on the cold air duct (4), and the air outlet of the air outlet duct (9) is located in the cavity (3). The air inlet duct (5) passes through the cavity (3) and extends into the furnace wall of the inner furnace body (2) to connect with the cold air duct (4).

8. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to claim 7, characterized in that: The cold air duct (4) is correspondingly installed in the furnace wall on both sides of the inner furnace body (2). The two cold air ducts (4) are connected by a connecting pipe (10). A branch pipe (11) is connected to the connecting pipe (10). Several air outlet pipes (9) are also installed on the branch pipe (11) and the connecting pipe (10).

9. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to claim 8, characterized in that: Multiple cold air ducts (4) are provided. The air inlet pipes (5) connected to the cold air ducts (4) on the same side are all connected to the main pipe (8) at one end of the cold air ducts (4) extending out of the outer furnace body (1). The blower is provided on the main pipe (8).

10. The external wall cooling device for an isothermal normalizing rapid cooling chamber according to claim 8, characterized in that: The branch pipe (11) and the connecting pipe (10) are embedded in the furnace wall at the top of the inner furnace body (2).

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