Rapid cooling device for heat treatment tapping of aluminum casting

Abstract

The utility model discloses a heat treatment tapping rapid cooling device for aluminum castings, and belongs to the technical field of heat treatment. The heat treatment tapping rapid cooling device for the aluminum castings comprises a logistics roller way located at the bottom of the heat treatment tapping rapid cooling device for the aluminum castings and used for conveying the aluminum castings subjected to heat treatment; the structural frame is installed above the logistics roller way, the front side and the rear side of the structural frame comprise pneumatic doors, the left side and the right side of the structural frame each comprise a set of air inlet devices, and an air exhaust device is arranged at the top of the structural frame; s-shaped cooling water ways and cooling fins are further arranged between the air inlet device and the inner space of the aluminum casting heat treatment tapping rapid cooling device, the S-shaped cooling water ways are connected with a cooling water circulation system, and the cooling fins are distributed between the adjacent cooling water ways. The snakelike cooling water way and the heat dissipation fins are used for cooling external air sucked by the air inlet device or cooling internal air. The cooling efficiency of the aluminum casting is improved through the air inlet and exhaust device, the snakelike cooling water way and the cooling fins.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology, and in particular to a rapid cooling device for aluminum castings after heat treatment. Background Technology

[0002] After heat treatment, aluminum castings often require fluorescent penetrant testing to detect surface defects. Fluorescent penetrant testing typically requires the casting temperature to be below 50 degrees Celsius to ensure the effectiveness of the penetrant. With fast-paced, automated production layouts, aluminum castings are often heat-treated using rack-type racks to increase loading capacity and improve production efficiency. For this type of heat treatment, the castings are densely stacked, numerous, and generate a large amount of heat in a single batch. The single-air cooling devices used in related technologies cannot rapidly cool the castings after they exit the furnace to meet the requirements of fluorescent penetrant testing, and the cooling time is significantly prolonged in hot seasons. Therefore, there is an urgent need for a device to accelerate the cooling rate of heat-treated aluminum castings. Summary of the Invention

[0003] This invention provides a rapid cooling device for aluminum castings after heat treatment, to solve the above-mentioned problems. The technical solution is as follows:

[0004] On one hand, a rapid cooling device for aluminum castings after heat treatment is provided, the rapid cooling device for aluminum castings after heat treatment includes:

[0005] The logistics roller conveyor is located at the bottom of the rapid cooling device for aluminum castings after heat treatment; it is used to transport the heat-treated aluminum castings.

[0006] The structural frame is installed above the logistics roller conveyor. The front and rear sides of the structural frame include pneumatic doors, and the left and right sides of the structural frame each include a set of air inlet devices. The top of the structural frame is equipped with an exhaust device. The air inlet devices are used to draw outside air into the rapid cooling device for the heat treatment of aluminum castings when the pneumatic doors are closed. The exhaust device is used to discharge the internal air in the rapid cooling device for the heat treatment of aluminum castings when the pneumatic doors are closed.

[0007] The space between the air intake device and the rapid cooling device for the heat treatment of aluminum castings also includes a serpentine cooling water channel and heat dissipation fins. The serpentine cooling water channel is connected to the cooling water circulation system, and the heat dissipation fins are distributed between adjacent cooling water channels. The serpentine cooling water channel and heat dissipation fins are used to cool the external air drawn in by the air intake device or to cool the internal air.

[0008] In one possible implementation, the inlet of the serpentine cooling water path is located on one side of the top of the device, and the outlet of the serpentine cooling water path is located at the bottom of the diagonal corner on one side of the top of the device.

[0009] In one possible implementation, the air intake devices are symmetrically arranged on the left and right sides, and each side of the air intake device includes multiple sets of air intake fans, which are evenly distributed along the conveying direction of the logistics roller conveyor.

[0010] In one possible implementation, the heat dissipation fins are radial aluminum fins, and the surface of the heat dissipation fins has a corrugated structure to increase the heat dissipation area.

[0011] In one possible implementation, the opening and closing action of the pneumatic door is matched with the conveying signal of the logistics roller conveyor.

[0012] The technical solution provided by this utility model brings at least the following beneficial effects:

[0013] The technical solution provided by this utility model achieves automatic feeding of heat-treated aluminum castings through a logistics roller conveyor. Furthermore, the coordinated operation of the air inlet device, exhaust device, serpentine cooling water channel, and heat dissipation fins improves the cooling efficiency of the heat-treated aluminum castings. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a rapid cooling device for aluminum castings after heat treatment;

[0016] Figure 2 This is a schematic diagram of the logistics system in a rapid cooling device for aluminum castings after heat treatment provided by this utility model;

[0017] Figure 3 This is a schematic diagram of the air inlet devices on both sides in a rapid cooling device for aluminum castings after heat treatment.

[0018] Figure 4 This is a schematic diagram of the exhaust device in a rapid cooling device for aluminum castings after heat treatment provided by this utility model.

[0019] Reference numerals in the attached drawings: 1. Structural frame; 11. Frame support column; 12. Frame beam; 13. Cylinder mounting plate; 14. Fixed bracket; 2. Pneumatic door; 21. Door panel; 22. Lifting cylinder; 23. Connecting rod; 24. Lifting support; 3. Air inlet device; 31. Fixed frame; 32. Air inlet fan protective cover; 33. Air inlet fan; 34. Cooling water channel; 35. Heat dissipation fins; 4. Exhaust device; 41. Exhaust fan protective cover; 42. Exhaust fan; 5. Logistics roller conveyor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

[0021] It should be noted that the terms "first," "second," etc. (if applicable) in the specification of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of utility models consistent with some aspects of this application.

[0022] After heat treatment, aluminum castings often require fluorescence penetrant testing to check for surface defects. This technique requires the casting temperature to be maintained below 50 degrees Celsius to ensure the penetrant can function effectively. To adapt to rapid, automated production, rack-type racks are commonly used during aluminum casting heat treatment to increase loading capacity and improve production efficiency. However, this method results in a large number of castings being produced at once, stacked tightly, leading to significant heat accumulation. The single-air cooling devices used in related technologies struggle to rapidly reduce the casting temperature after exiting the furnace to meet fluorescence penetrant testing standards, especially during hot seasons when the cooling time is significantly prolonged.

[0023] This invention provides a rapid cooling device for aluminum castings after heat treatment, thereby improving the cooling efficiency of the heat-treated aluminum castings. See also: Figure 1 , Figure 1A schematic diagram of the structure of a rapid cooling device for aluminum castings after heat treatment. The rapid cooling device for heat-treated aluminum castings includes: a material conveyor 5 located at the bottom of the rapid cooling device for heat-treated aluminum castings, used to transport the heat-treated aluminum castings; a structural frame 1 installed above the material conveyor 5, with pneumatic doors 2 on the front and rear sides of the structural frame 1, and a set of air inlet devices 3 on each of the left and right sides of the structural frame 1, and an exhaust device 4 on the top of the structural frame 1. The air inlet devices 3 are used to draw in external air into the rapid cooling device for heat-treated aluminum castings when the pneumatic doors 2 are closed, and the exhaust device 4 is used to exhaust the internal air in the rapid cooling device for heat-treated aluminum castings when the pneumatic doors 2 are closed; a serpentine cooling water channel 34 and heat dissipation fins 35 are also included between the air inlet devices 3 and the internal space of the rapid cooling device for heat-treated aluminum castings. The serpentine cooling water channel 34 is connected to a cooling water circulation system, and the heat dissipation fins 35 are distributed between adjacent cooling water channels 34. The serpentine cooling water channel 34 and the heat dissipation fins 35 are used to cool the external air drawn in by the air inlet devices 3 or to cool the internal air.

[0024] The material conveyor roller 5 is the bottom structure of the entire cooling device, used to transport the heat-treated aluminum castings. The material conveyor roller 5 typically consists of a series of rolling shafts or chains, capable of continuously and smoothly moving the aluminum castings from one position to another, facilitating their entry into the cooling device for rapid cooling. The structural frame 1 is the main supporting structure of the cooling device, mounted above the material conveyor roller 5 via fixed brackets 14. The structural frame 1 not only provides the necessary strength and stability but also serves as the mounting base for other components (such as pneumatic doors 2, air inlet devices 3, and exhaust devices 4). The pneumatic doors 2 are located on the front and rear sides of the structural frame 1, and are opened and closed by air pressure. During the cooling process, the pneumatic doors 2 are closed to ensure that the airflow and temperature control inside the cooling device are not disturbed by external factors.

[0025] This application does not limit the structure of the pneumatic door 2; for example, see [link to example]. Figure 2 The diagram shows a structural schematic of the logistics system in a rapid cooling device for heat-treated aluminum castings. The pneumatic door 2 consists of a door panel 21, a lifting cylinder 22, a connecting rod 23, and a lifting support 24. The lifting cylinder 22 is mounted on a cylinder mounting plate 13; the lifting support 24 is mounted on the door panel 21 and connected to the cylinder via the connecting rod 23. Thus, the door is opened and closed by the lifting cylinder 22 driving the door panel 21 to move vertically.

[0026] Air intake devices 3 are distributed on the left and right sides of the structural frame 1, each group including one or more air inlets. When the pneumatic door 2 is closed, the air intake devices 3 begin to operate, drawing in external cold air into the cooling device. The design of these air intake devices 3 helps to achieve rapid and uniform airflow, thereby accelerating the cooling process of the aluminum casting. The exhaust device 4 is located at the top of the structural frame 1, and its main function is to exhaust the hot air inside the cooling device when the pneumatic door 2 is closed. In this way, with the continuous intake of new cold air and the exhaust of old hot air, an effective air circulation is formed, further improving the cooling efficiency.

[0027] The serpentine cooling water channel 34 and the heat dissipation fins 35 are located between the air inlet device 3 and the internal space of the cooling device. The serpentine cooling water channel 34 is a pipe system connected to a cooling water circulation system, where circulating water absorbs and removes heat. The heat dissipation fins 35 are distributed between adjacent cooling water channels 34, increasing the surface area for heat exchange and thus improving heat dissipation efficiency. When outside air enters the cooling device through the air inlet device 3, it first passes through the heat dissipation fins 35 and the serpentine cooling water channel 34, is cooled, and then blows onto the aluminum casting, achieving rapid cooling. In addition, the serpentine cooling water channel 34 and the heat dissipation fins 35 can also directly reduce the temperature of the internal space of the cooling device.

[0028] In summary, the rapid cooling device for aluminum castings after heat treatment conveys the aluminum castings through the logistics roller conveyor 5. By utilizing the combination of pneumatic door 2, air inlet device 3, air outlet device 4, serpentine cooling water channel 34, and heat dissipation fins 35, an efficient and rapid cooling process is achieved, which helps the aluminum castings reach the required performance standards.

[0029] In one possible implementation, the inlet of the serpentine cooling water passage 34 is located on one side of the top of the device, and the outlet of the serpentine cooling water passage 34 is located at the bottom of the diagonal side of the top of the device.

[0030] The serpentine cooling water passage 34 is used to absorb and transfer heat. Through its complex pipe layout, the serpentine cooling water passage 34 effectively increases the contact area between the cooling medium and the surrounding air or the object to be cooled, thereby improving heat exchange efficiency. The inlet of the serpentine cooling water passage 34 is located on the top side of the device. That is, the cooling water is introduced from the top of the device, beginning its journey in the serpentine pipe. The top-positioned inlet helps ensure that the cooling water flows evenly and fully throughout the entire serpentine pipe system, maximizing heat exchange. Furthermore, the top inlet facilitates connection to an external cooling water circulation system, simplifying installation and maintenance. Corresponding to the inlet, the outlet of the serpentine cooling water passage 34 is located at the diagonally opposite bottom of the top side of the device. This layout ensures that the cooling water can smoothly exit from the bottom of the device after flowing through the entire serpentine pipe system. The diagonally opposite bottom location of the outlet not only helps maintain uniform flow of cooling water in the pipe but also ensures that the cooling water fully absorbs and carries away heat before flowing out. In addition, this layout helps reduce the residence time of cooling water in the pipes, improving the efficiency of the entire cooling system.

[0031] In one possible implementation, the air intake devices 3 are symmetrically arranged on the left and right sides, and each side of the air intake device 3 includes multiple sets of air intake fans 33, which are evenly distributed along the conveying direction of the logistics roller conveyor 5.

[0032] The air intake devices 3 are symmetrically arranged on the left and right sides of the device, with the same number and type of intake fans 33 on each side operating symmetrically to ensure that cooling air is blown evenly and effectively onto the aluminum casting. This symmetrical layout helps reduce airflow imbalance and improves cooling efficiency and uniformity. Each side of the air intake device 3 includes multiple sets of intake fans 33. These fans 33 are typically electric or pneumatic devices capable of generating a strong airflow to draw external cool air into the cooling device. The arrangement of multiple sets of intake fans 33 means that cooling air can enter the device simultaneously from multiple points, helping to accelerate airflow and increase the cooling speed.

[0033] The inlet fans 33 are evenly distributed along the conveying direction of the logistics roller conveyor 5, ensuring that the aluminum casting receives uniform cooling air from the inlet fans 33 regardless of its position on the conveyor 5. This uniform distribution design ensures the consistency and stability of the cooling process, avoiding performance differences caused by localized overheating or insufficient cooling.

[0034] This layout and design of the air intake device 3 significantly improves cooling efficiency. The even distribution and symmetrical arrangement of multiple intake fans 33 ensures that cooling air can fully cover the surface of the aluminum casting and quickly remove heat. In addition, this design helps to reduce eddies and dead zones in the airflow, improving the utilization rate of cooling air.

[0035] For example, see Figure 3 The diagram shows a structural schematic of the dual-sided air inlet device 3 in a rapid cooling device for aluminum castings after heat treatment. Optionally, one set of air inlet devices 3 is provided on each of the left and right sides. Each set consists of a fixed frame 31, an air inlet fan protective cover 32, an air inlet fan 33, a cooling water channel 34, and heat dissipation fins 35, and is bolted to the frame support 11. Each set of air inlet devices 3 on one side is provided with eight sets of air inlet fans 33. An air inlet fan protective cover 32 is provided on the outside of each set of air inlet fans 33. A serpentine cooling water channel 34 and heat dissipation fins 35 are provided behind the air inlet fans 33. The above components are bolted to the fixed frame 31.

[0036] In one possible implementation, the heat dissipation fins 35 are radial aluminum fins, and the surface of the heat dissipation fins 35 is provided with a corrugated structure to increase the heat dissipation area.

[0037] Radial arrangement refers to fins extending radially outwards from a central point or a base point. This layout helps to utilize space more efficiently and ensures that heat is dissipated evenly from the central point. The main purpose of the corrugated structure on the surface of the heat dissipation fins 35 is to increase the heat dissipation area. The larger the heat dissipation area, the higher the heat exchange efficiency between the fins and the surrounding air, thus enabling more efficient transfer of heat from the heat source to the environment. The corrugated structure increases the contact area between the air and the fin surface, while promoting airflow between the fins. When air flows over the corrugated fins, it is guided by the shape of the fins, forming vortices or turbulence, which helps to accelerate the heat exchange rate between the air and the fins.

[0038] In one possible implementation, the opening and closing action of the pneumatic door 2 is matched with the conveying signal of the logistics roller conveyor 5. The opening and closing action of the pneumatic door 2 is controlled according to the conveying signal of the logistics roller conveyor 5. Specifically, when an item needs to enter or leave a certain area on the logistics roller conveyor 5, the control system will issue a corresponding conveying signal. Upon receiving these signals, the pneumatic door 2 automatically opens or closes to ensure that the items can pass through smoothly and safely. This matching relationship helps to improve the automation level of the production line, reduce manual intervention, and improve production efficiency and safety.

[0039] This application does not limit the structure of the exhaust device 4. See [link / reference] Figure 4 The diagram shows a structural schematic of the exhaust device 4 in a rapid cooling device for aluminum castings after heat treatment. Optionally, the exhaust device 4 is installed on the top of the cooling device and bolted to the frame beam 12. A set of large exhaust fans 42 is installed inside the exhaust fan protective cover 41 for exhaust.

[0040] For example, during the operation of the cooling device, air is introduced through the left and right side air intake devices 3, and the cooling water circuit 34 is connected to the factory circulating water system to enhance the heat dissipation capacity with the heat dissipation fins 35. It can cool the incoming air and effectively dissipate the heat accumulated in the space. Then, the internal heat is drawn out by the top exhaust fan 42. This cycle is repeated to achieve the effect of rapidly cooling the casting.

[0041] In summary, the technical solution provided in this application achieves automatic feeding of heat-treated aluminum castings through a logistics roller conveyor. Furthermore, the coordinated operation of the air inlet device, exhaust device, serpentine cooling water channel, and heat dissipation fins improves the cooling efficiency of the heat-treated aluminum castings.

[0042] Those skilled in the art will understand that Figures 1-4 The structure shown does not constitute a limitation on the structure of this utility model. It may include more or fewer components than shown, or combine certain components, or use different component arrangements.

[0043] It should be understood that "multiple" as used in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0044] The above are merely exemplary embodiments of the present utility model and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rapid cooling device for aluminum castings after heat treatment, characterized in that, The rapid cooling device for the aluminum casting after heat treatment includes: The logistics roller conveyor is located at the bottom of the rapid cooling device for the heat-treated aluminum castings and is used to transport the heat-treated aluminum castings. A structural frame is installed above the logistics roller conveyor. The front and rear sides of the structural frame include pneumatic doors, and the left and right sides of the structural frame each include a set of air inlet devices. The top of the structural frame is provided with an exhaust device. The air inlet devices are used to draw outside air into the rapid cooling device for the heat treatment of aluminum castings when the pneumatic doors are closed. The exhaust device is used to discharge the internal air in the rapid cooling device for the heat treatment of aluminum castings when the pneumatic doors are closed. The internal space between the air intake device and the rapid cooling device for the heat treatment of the aluminum casting also includes a serpentine cooling water channel and heat dissipation fins. The serpentine cooling water channel is connected to the cooling water circulation system, and the heat dissipation fins are distributed between adjacent cooling water channels. The serpentine cooling water channel and heat dissipation fins are used to cool the external air drawn in by the air intake device or to cool the internal air.

2. The rapid cooling device for aluminum castings after heat treatment according to claim 1, characterized in that, The inlet of the serpentine cooling water path is located on one side of the top of the device, and the outlet of the serpentine cooling water path is located at the bottom of the diagonal corner on one side of the top of the device.

3. The rapid cooling device for aluminum castings after heat treatment according to claim 1 or 2, characterized in that, The air intake devices are symmetrically arranged on the left and right sides, and each side of the air intake device contains multiple sets of air intake fans, which are evenly distributed along the conveying direction of the logistics roller conveyor.

4. The rapid cooling device for aluminum castings after heat treatment according to claim 1, characterized in that, The heat dissipation fins are radial aluminum fins, and the surface of the heat dissipation fins has a corrugated structure to increase the heat dissipation area.

5. The rapid cooling device for aluminum castings after heat treatment according to claim 1, characterized in that, The opening and closing action of the pneumatic door is matched with the conveying signal of the logistics roller conveyor.

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