An air quenching cooling device and air quenching equipment

Abstract

This application discloses an air quenching cooling device and air quenching equipment, relating to the field of heat treatment equipment. The air quenching cooling device includes an air-cooled fan, a spray nozzle, a mist-distributing duct, and a cooling air box. The spray nozzle is located at the air outlet of the air-cooled fan, and the mist-distributing duct is located between the air-cooled fan and the cooling air box. Multiple water droplet removal structures are arranged within the mist-distributing duct, corresponding to the entire flow cross-section of the duct. These structures can spray water mist into the airflow from the air-cooled fan and remove larger water droplets from the mist, improving the cooling effect and uniformity of the cooling air. This application also discloses an air quenching equipment using the air quenching cooling device of this application.

Description

Technical Field

[0001] This application relates to the field of heat treatment equipment, and more particularly to an air quenching cooling device. In addition, this application also relates to an air quenching device. Background Technology

[0002] Quenching is a heat treatment process in which steel is heated to above its critical temperature, held at that temperature for a certain time, and then cooled at a rate greater than the critical cooling rate to obtain a non-equilibrium microstructure dominated by martensite. It is also commonly referred to as quenching in the solution treatment or heat treatment processes involving rapid cooling of materials such as aluminum alloys, copper alloys, titanium alloys, and tempered glass. Quenching can significantly improve the rigidity, hardness, wear resistance, fatigue strength, and toughness of materials, thereby meeting the diverse requirements of various mechanical parts and tools, and is widely used in the field of machining.

[0003] During the quenching process, to increase the cooling rate of high-temperature materials, they are typically immersed in quenching media such as brine, water, mineral oil, or air. However, for products made from thin-walled materials, the rapid cooling of some materials upon contact with the quenching medium at high temperatures can easily lead to deformation. Therefore, when quenching thin-walled parts, rapidly flowing air is usually used to cool the high-temperature thin-walled parts; this is called air quenching, commonly known as wind quenching. Air quenching can reduce deformation during quenching and is widely used in the quenching process of thin-walled products.

[0004] However, air quenching has a slow cooling rate, which can easily lead to insufficient transformation of the material's microstructure, affecting its quenching performance. Simultaneously, the slow cooling rate also prolongs the material's cooling time, impacting quenching efficiency. To address this, an air quenching cooling device has emerged that sprays water mist onto the product while blowing air, utilizing water's high heat capacity to increase the material's cooling rate. Existing air quenching cooling devices with spray functionality typically use a fan to blow air onto the high-temperature material placed on a conveyor belt, while simultaneously spraying water mist from nozzles at the fan's outlet. The airflow drives the water mist towards the product on the conveyor belt, cooling the high-temperature material. However, the water mist sprayed from the nozzles usually contains water droplets of varying sizes. Driven by the airflow, these droplets adhere to the high-temperature material, causing rapid, localized cooling and resulting in uneven cooling, which can easily lead to localized deformation of thin-walled materials. Summary of the Invention

[0005] In order to improve the cooling rate of air quenching and ensure the uniformity of material cooling, this application provides an air quenching cooling device and an air quenching equipment.

[0006] The air quenching cooling device provided in this application adopts the following technical solution: An air quenching and cooling device includes an air-cooled fan, a spray nozzle, a mist equalization duct, and a cooling air box; the spray nozzle is disposed at the air outlet of the air-cooled fan, the mist equalization duct is disposed between the air-cooled fan and the cooling air box, and a plurality of water droplet removal structures are disposed in the mist equalization duct, the plurality of water droplet removal structures being disposed corresponding to the entire flow cross section of the mist equalization duct.

[0007] By adopting the above technical solution, and utilizing the mist equalization channel between the air-cooled fan and the cooling air box, and the water droplet removal structure within the mist equalization channel, larger water droplets in the mist sprayed from the spray nozzle can be removed, making the mist in the airflow more uniform and improving the uniformity of product material cooling. Furthermore, by utilizing the water droplet removal structure corresponding to the entire flow cross-section of the mist equalization channel, larger water droplets in any part of the airflow within the mist equalization channel can be removed, promoting the vaporization of smaller water droplets and ensuring the uniformity of moisture distribution in the airflow.

[0008] In one specific implementation, the water droplet removal structure includes a water droplet removal panel and a back plate, the water droplet removal panel and the back plate are connected to each other, the water droplet removal panel is inclined toward the air inlet of the mist equalization channel, and a water collection tank perpendicular to the airflow direction is provided on the water droplet removal panel.

[0009] By adopting the above technical solution, the de-drip panel, which is inclined towards the air inlet of the mist equalization channel, can block larger water droplets in the airflow, causing the water droplets to adhere to the de-drip panel and thus remove the water droplets from the airflow. The water collection tank on the de-drip panel, which is perpendicular to the airflow direction, can block and collect water droplets that move along the de-drip panel under the blowing of the airflow, preventing the water droplets attached to the de-drip panel from re-entering the airflow under the blowing of the airflow.

[0010] In one specific implementation, the water droplet removal structure is disposed on the windward side of the mist equalization duct, and the water droplet removal panel is disposed parallel to the back plate and connected to each other around the perimeter.

[0011] By adopting the above technical solution, the water droplet removal structure set on the windward side of the mist equalization channel can block and collect larger water droplets in the airflow blowing towards the windward side of the mist equalization channel, preventing water droplets from re-entering the airflow under the blowing of the airflow and affecting the uniformity of moisture distribution in the airflow; by using the structure in which the water droplet removal panel and the back plate are set parallel and interconnected around the perimeter, water droplets can be collected between the water droplet removal panel and the back plate and discharged through the drainage hole set on the side of the water droplet removal structure.

[0012] In one specific implementation, the water droplet removal structure is disposed on one side of the mist equalization channel, and the one side of the water droplet removal panel and the back plate are connected to each other, while the other sides are connected to the side wall of the mist equalization channel.

[0013] By adopting the above technical solution, the water droplet removal structure set on one side of the mist equalization channel can block the airflow path corresponding to the air outlet of the mist equalization channel, attach and collect larger diameter water droplets in the airflow of the mist equalization channel, and improve the uniformity of moisture distribution in the airflow. By using the structure in which one side of the water droplet removal panel and the back plate are connected to each other and the other sides are connected to the side wall of the mist equalization channel, a water droplet collection space can be formed between the water droplet removal panel, the back plate and the side wall of the mist equalization channel, and the water droplets are discharged through the drainage holes set on the wall of the mist equalization channel.

[0014] In one specific implementation, the water droplet removal structure is disposed inside the mist equalization channel, the middle part of the water droplet removal panel is bent along the length direction, both sides of the water droplet removal panel in the width direction are connected to the back plate, and both sides of the water droplet removal panel and the back plate in the length direction are connected to the side wall of the mist equalization channel.

[0015] By adopting the above technical solution, and utilizing the water droplet removal structure alternately arranged inside the mist equalization channel, the projection of the water droplet removal structure at the outlet of the mist equalization channel can cover the entire outlet with minimal increase in the airflow resistance of the mist equalization channel, which facilitates the removal of water droplets in the airflow at different positions in the mist equalization channel; the space between the bent water droplet removal panel and the back plate can be used to collect water droplets attached to the water droplet removal panel and discharge them through the drainage holes provided on the wall of the mist equalization channel.

[0016] In one specific implementation scheme, an air inlet is provided on one side of the cooling air box, the outlet of the mist equalization channel is inserted into the air inlet of the air box and slidably connected to the air inlet of the air box, and a telescopic drive device is provided between the mist equalization channel and the cooling air box.

[0017] By adopting the above technical solution, the sliding connection between the uniform mist duct and the air box inlet can be used to adjust the connection position of the cooling air box on the uniform mist duct, thereby adjusting the distance between the air box outlet of the cooling air box and the product, which is beneficial to adjusting the airflow speed and uniformity of airflow distribution of the cooling product; by using the telescopic drive device set between the uniform mist duct and the cooling air box, the connection position of the cooling air box on the uniform mist duct can be easily adjusted.

[0018] In one specific implementation scheme, an air distribution plate is provided at the air outlet of the cooling air box, and the air distribution plate is provided with a plurality of evenly distributed air outlet holes.

[0019] By adopting the above technical solution, and utilizing multiple air outlets evenly arranged on the air distribution plate, the cooling airflow can be blown out evenly from the air outlet of the air box, forming a uniform cooling airflow in the product area. This avoids the phenomenon that the airflow speed is fast in the middle of the air outlet and slow at the edge, thus improving the uniformity of product cooling.

[0020] The air quenching equipment provided in this application adopts the following technical solution: An air quenching device includes a heating chamber, an air cooling chamber, and at least one air quenching cooling device provided in this application. The air cooling chamber is provided with an air quenching conveyor belt, and the cooling air box is provided in the air cooling chamber with its air outlet facing the air quenching conveyor belt.

[0021] By adopting the above technical solution, the air quenching cooling device provided in this application can add uniform water mist to the cooling airflow, increase the humidity of the cooling air, and improve the cooling speed of high-temperature products; at the same time, it removes water droplets with larger diameters from the airflow, making the distribution of moisture in the airflow more uniform, ensuring that different parts of the product material can be cooled simultaneously, and reducing the deformation of the product during the cooling process.

[0022] In one specific implementation, multiple air quenching cooling devices are provided, and the cooling air boxes of the multiple air quenching cooling devices are respectively located on the upper and lower sides of the air quenching conveyor belt, and the top of the air cooling chamber is connected to the external space.

[0023] By adopting the above technical solution, multiple air quenching and cooling devices are installed on the upper and lower sides of the air quenching conveyor belt, which can simultaneously cool the product from both the upper and lower sides of the product conveyor belt, improve the uniformity of the cooling airflow around the product, and dissipate heat from the top of the air cooling chamber, thereby improving the uniformity of the cooling effect in different parts of the product.

[0024] In one specific implementation scheme, multiple air quenching and cooling devices are arranged above the air quenching conveyor belt. The multiple air quenching and cooling devices use the same cooling air box. Multiple air box inlets are arranged on the upper side of the cooling air box. The air outlet of the uniform mist channel of each air quenching and cooling device is inserted into one of the air box inlets and can slide relative to the air box inlet. The uniform mist channel is fixedly connected to the air cooling chamber. A telescopic drive device is arranged between the cooling air box and the air cooling chamber.

[0025] By adopting the above technical solution, and by using the arrangement of various air outlets of multiple air quenching cooling devices inserted into the air inlet of a cooling air box, the cooling air box can move synchronously relative to multiple air outlets, thereby synchronously adjusting the distance between the air outlets of multiple air quenching cooling devices and the air quenching conveyor belt, and thus synchronously adjusting the flow rate and uniformity of the cooling airflow blown out by multiple air quenching cooling devices.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By utilizing the water droplet removal structure set in the uniform mist channel, the water mist sprayed from the spray nozzle can improve the air cooling effect while removing large-diameter water droplets mixed in with the water mist. This prevents water droplets from causing localized rapid cooling of thin-walled products, ensuring the uniformity of cooling rate in different parts of the product and reducing product deformation. 2. By using multiple water droplet removal structures to correspond to the entire flow cross section of the uniform mist air channel, it is beneficial to remove water droplets from the cooling airflow in different parts of the uniform mist air channel, which can improve the uniformity of moisture distribution in the cooling airflow and reduce the impact of the water droplet removal structure on the cooling airflow resistance. 3. By utilizing the sliding connection between the cooling air box and the mist equalization channel, the distance between the air box outlet and the product can be adjusted, thereby regulating the flow rate of the cooling air and thus adjusting the cooling speed of the product. 4. By utilizing the uniform mist structure of multiple air quenching and cooling devices and the sliding connection between the multiple air box inlets on a cooling air box, the distance between the cooling airflow blown out by multiple air quenching and cooling devices and the product can be adjusted synchronously, thus achieving synchronous adjustment of the cooling airflow generated by multiple air quenching and cooling devices. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an air quenching cooling device in one embodiment of the air quenching cooling equipment of this application.

[0028] Figure 2 This is a side view of an air quenching cooling device in one embodiment of the air quenching cooling equipment of this application.

[0029] Figure 3 This is a top view of an air quenching cooling device in one embodiment of the air quenching cooling equipment of this application.

[0030] Figure 4 This is a schematic diagram of the mist-dissipating air duct in one embodiment of the air quenching and cooling device of this application.

[0031] Figure 5 This is a schematic diagram of the mist-dissipating air duct in another embodiment of the air quenching and cooling device of this application.

[0032] Figure 6 This is a schematic diagram showing the connection relationship between the misting duct and the cooling air box in one embodiment of the air quenching equipment of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Air-cooled fan; 2. Spray nozzle; 3. Mist distribution duct; 4. Cooling air box; 41. Air box inlet; 42. Air distribution plate; 5. Water droplet removal structure; 51. Drip removal panel; 511. Water collection tank; 52. Back plate; 53. Drain hole; 6. Telescopic drive device; 7. Cooling chamber; 8. Air quenching conveyor belt. Detailed Implementation

[0034] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0035] In this application, unless otherwise stated, the directional terms such as "upper" and "lower" indicate the orientation or positional relationship based on the actual orientation or positional relationship of the air quenching equipment during use. The directional terms "front" and "rear" indicate the orientation and positional relationship based on the normal conveying direction of the conveyor belt when the air quenching equipment is working normally. The orientation of the air quenching cooling device and its components in this application is the same as the above-mentioned orientations.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] One embodiment of the air quenching cooling apparatus of this application, such as Figures 1 to 2 As shown, it includes an air-cooled blower 1, a spray nozzle 2, a mist equalization duct 3, and a cooling air box 4. The air-cooled blower 1 is a blower driven by an electric motor, usually a centrifugal fan driven by an electric motor. Driven by the electric motor, the air-cooled blower can generate a large air volume, which is blown onto the heated high-temperature product, causing the product temperature to drop rapidly and achieving the quenching effect of the product.

[0038] Spray nozzle 2 is located at the air outlet of the air-cooled fan 1 and is used to spray water mist into the air blown out by the fan 1, increasing the moisture content of the airflow. When the airflow blows towards the high-temperature product, the water in the air comes into contact with the product. Utilizing the high heat capacity of water and the vaporization of the fine water mist, more heat is absorbed from the product, increasing the cooling rate. Spray nozzle 2 can use various nozzles that can produce fine droplets, typically fan-shaped nozzles, to increase the spray range of the water mist. Spray nozzle 2 can be used as a single nozzle or in combination of multiple nozzles. By controlling the water spray from spray nozzle 2, the cooling rate of the product can also be controlled. Increasing the product cooling rate can improve the quenching effect of the product, reduce the cooling time, and improve the efficiency of air quenching.

[0039] The uniform mist duct 3 is located between the air-cooled fan 1 and the cooling air box 4, and can spray water mist into the airflow blown out by the air-cooled fan 1. The airflow carrying water mist enters the uniform mist duct 3 and flows into the cooling air box 4, forming a uniform airflow within the cooling air box 4. This airflow is then directed over a large area towards the quenched product, resulting in a more uniform temperature drop over a wider area. Typically, the water mist sprayed from the spray nozzle 2 contains some larger water droplets. These droplets are carried by the airflow towards the product, where they absorb a large amount of heat and vaporize upon contact. This causes a rapid drop in temperature in localized areas of the product, creating significant temperature differences. This can easily lead to localized deformation and cracking in thin-walled products, affecting the quenching quality. Multiple water droplet removal structures 5 are installed in the uniform mist air duct 3. The water droplet removal structures 5 can use various structures that can intercept and remove large-diameter water droplets in the airflow, such as interception nets, interception strips or deflection structures. They utilize the characteristics of large-diameter water droplets, which have large volume and large inertia, to intercept and remove water droplets in the airflow, improve the uniformity of moisture in the airflow, and ensure uniform cooling of different parts of the product while increasing the product cooling speed.

[0040] Typically, multiple water droplet removal structures 5 are installed within the mist equalization duct 3. These structures are evenly distributed along both the airflow direction and the cross-sectional direction of the duct, and their projections along the airflow direction cover the entire cross-section of the duct. The gaps between these spaced-out structures provide a channel for airflow within the duct, reducing the resistance of the water droplet removal structures to the airflow. Furthermore, the water droplet removal structures 5, positioned across the entire cross-section, effectively intercept water droplets in the airflow, improving the uniformity of moisture distribution throughout the airflow.

[0041] In some embodiments of the air quenching cooling apparatus of this application, such as Figure 4 and Figure 5As shown, the water droplet removal structure 5 is an elongated structure formed by connecting the water droplet removal panel 51 and the back plate 52. A receiving space for collecting the removed water droplets is formed between the water droplet removal panel 51 and the back plate 52. The length of the water droplet removal structure 5 spans the entire mist equalization channel 3, and its two ends are fixed to the side walls of the mist equalization channel 3, so that the water droplet removal panel 51 faces the air inlet of the mist equalization channel 3 and is inclined along its length. Multiple water-collecting grooves 511 parallel to the length direction are provided on the water droplet removal panel 51, and the water-collecting grooves 511 penetrate the water droplet removal panel 51, connecting the external airflow channel and the internal receiving space. When the airflow passes through the mist equalization channel 3, the flowing air and the tiny water droplets in the air bypass the water droplet removal structures 5 and flow through the gaps between the water droplet removal structures 5, thus passing through the mist equalization channel 3. Larger water droplets in the airflow, due to their greater inertia, turn slowly and are usually intercepted by one of the multiple water droplet removal structures 5 covering the entire flow cross-section. The water droplets adhere to the water droplet removal panel 51 and move along the width direction under the blowing of the airflow, entering the receiving space between the water droplet removal panel 51 and the back plate 52 through the water receiving tank 511. A drain hole 53 is provided on the side wall of the mist equalization channel 3 corresponding to the lower part of the receiving space to drain the water from the receiving space.

[0042] In a preferred embodiment of the air quenching cooling device of this application, such as Figure 4 As shown, the water droplet removal structure 5 is disposed on the windward side of the wall of the mist equalization channel 3. The water droplet removal panel 51 and the back plate 52 are arranged parallel to the windward side of the mist equalization channel 3, and the peripheries of the water droplet removal panel 51 and the back plate 52 are connected to each other, forming a receiving space for collecting water droplets in the gap between the water droplet removal panel 51 and the back plate 52. Alternatively, the side wall of the mist equalization channel 3 can be used instead of the back plate 52, and the periphery of the water droplet removal panel 51 can be directly fixed to the wall of the mist equalization channel 3, forming a receiving space between the water droplet removal panel 51 and the side wall of the mist equalization channel 3.

[0043] In another preferred embodiment of the air quenching cooling apparatus of this application, such as Figure 4 and Figure 5 As shown, the water droplet removal structure 5 is disposed on the side wall of the mist equalization channel 3. The water droplet removal panel 51 and the back plate 52 are connected to each other on one side in the width direction, and the other side is connected to the side wall of the mist equalization channel 3. The water droplet removal panel 51 and the back plate 52 extend to the side of the mist equalization channel 3 on both sides in the length direction and are also connected to the side wall of the mist equalization channel 3. A receiving space for collecting water droplets is formed between the water droplet removal panel 51, the back plate 52 and the side wall of the mist equalization channel 3.

[0044] As one specific embodiment of the air quenching cooling device of this application, such as Figure 5As shown, the de-drip structure 5 is positioned inside the mist equalization channel 3, traversing its length. The de-drip panel 51 is bent in the middle, forming a bend line parallel to its length. Both sides of the de-drip panel 51 in the width direction are connected to the back plate 52, forming a triangular-shaped accommodating space between the panel 51 and the back plate 52. Both sides of the de-drip panel 51 and the back plate 52 in the length direction are connected to the sidewalls of the mist equalization channel 3, so that the middle parts of the de-drip panel 51 and the back plate 52 are suspended inside the mist equalization channel 3.

[0045] In some embodiments of the air quenching cooling apparatus of this application, such as Figure 6 As shown, the cooling air box 4 has an air box inlet 41 on one side and an open outlet on the other. The outlet end of the mist equalization channel 3 is inserted into the air box inlet 41. By sliding the mist equalization channel 3 within the air box inlet 41, the connection position of the cooling air box 4 at the end of the mist equalization channel 3 can be adjusted, thereby adjusting the position of the outlet of the cooling air box 4. A telescopic drive device 6 is provided between the mist equalization channel 3 and the cooling air box 4. The telescopic drive device 6 can use various suitable telescopic drive devices, such as cylinders, hydraulic cylinders, screw drives, or electric push rods.

[0046] In some embodiments of the air quenching cooling apparatus of this application, such as Figure 6 As shown, an air distribution plate 42 is provided at the air outlet of the cooling air box 4, and multiple evenly distributed air outlet holes are provided on the air distribution plate 42. The air distribution plate 42 covers the entire air outlet of the cooling air box 4, so that the air entering the cooling air box 4 is evenly sprayed out through the air outlet on the air distribution plate 42, avoiding the phenomenon that the air velocity is higher in the middle part of the air outlet and lower at the edge part when the air is sprayed out through a large air outlet.

[0047] One embodiment of the air quenching equipment of this application includes a heating chamber, an air cooling chamber 7, and an air quenching cooling device according to any embodiment of this application. The heating chamber is used to heat and hold the product to be quenched. Typically, the product is heated to a set temperature, such as 480°C, in the heating chamber and held at that temperature for a set time, such as half an hour, before being output from the heating chamber. An air quenching conveyor belt 8 is provided in the air cooling chamber 7, running through both ends of the air cooling chamber 7. The air quenching conveyor belt 8 can move under the drive of a drive motor, conveying the high-temperature product output from the heating chamber to the air cooling chamber 7 for cooling and air quenching, and conveying the product cooled to near room temperature out of the air cooling chamber 7. The product heated in the heating chamber can be transferred to the air quenching conveyor belt 8 via the heating conveyor belt set in the heating chamber, or the air quenching conveyor belt 8 can be set to run through both the heating chamber and the air cooling chamber 7 simultaneously, with the air quenching conveyor belt 8 sequentially transporting the product in and out of the heating chamber and the air cooling chamber.

[0048] Multiple cooling devices for air quenching are provided in the air cooling chamber 7, including at least one air quenching cooling device according to any embodiment of this application. The air quenching cooling device of this application can be entirely installed in the air cooling chamber 7 or partially installed in the air cooling chamber 7, wherein at least the cooling air box 4 is installed in the air cooling chamber, and the air outlet of the cooling air box 4 faces the air quenching conveyor belt 8 so as to blow air mixed with water mist onto the products on the air quenching conveyor belt 8, so that the products entering the air cooling chamber 7 are cooled quickly and evenly, preventing the products from being deformed or cracked due to excessively fast cooling speed or excessive local temperature difference, thereby improving the quenching effect of the products and improving the efficiency of air quenching.

[0049] In some embodiments of the air quenching equipment of this application, such as Figure 1-3 As shown, multiple air quenching cooling devices of this application are installed in an air quenching equipment, such as four air quenching cooling devices. The cooling air boxes 4 of the four air quenching cooling devices are respectively installed on the upper and lower sides of the air quenching conveyor belt 8. Typically, two air quenching cooling devices are installed above the air quenching conveyor belt 8, and two air quenching cooling devices are also installed below the air quenching conveyor belt 8. The air outlets of the cooling air boxes 4 of the air quenching cooling devices are directed from the upper and lower sides of the air quenching conveyor belt 8 toward the air quenching conveyor belt 8, so as to blow cooling air with water mist onto the products on the air quenching conveyor belt 8 for rapid cooling. Exhaust windows are provided at the entrance and exit points of the air quenching conveyor belt 8 into the air cooling chamber 7, and the top of the air cooling chamber 7 is open, connecting with the external space, which is conducive to the circulation of gas inside and outside the air cooling chamber 7.

[0050] In a preferred embodiment of the air quenching equipment of this application, such as Figure 1 , Figure 3 and Figure 6As shown, two air quenching cooling devices are installed above the air quenching conveyor belt 8. These two devices blow cooling air onto the air quenching conveyor belt 8 through the same cooling air box 4. The air-cooling fans of the two air quenching cooling devices are fixed to the outer side of the top of the air cooling chamber 7. The mist equalization channel 3 passes through the top wall of the air cooling chamber 7 and enters the air cooling chamber 7, and is fixed to the top of the air cooling chamber 7. Two air box inlets 41 are provided on the top of the cooling air box 4. The air outlets of the mist equalization channels 3 of the two air quenching cooling devices are each inserted into one of the air box inlets 41. Both mist equalization channels 3 can slide relative to the air box inlets 41, allowing the cooling air box 4 to extend and retract with the mist equalization channels 3 by sliding the air box inlets 41 on the mist equalization channels 3, thereby adjusting the distance between the air outlet of the cooling air box 4 and the air quenching conveyor belt 8. When the distance between the outlet of the cooling air box 4 and the air quenching conveyor belt 8 increases, the speed of the cooling gas passing through the air quenching conveyor belt 8 decreases, but the uniformity of gas flow generally improves. Conversely, when the distance between the outlet of the cooling air box 4 and the air quenching conveyor belt 8 decreases, the speed of the cooling gas passing through the air quenching conveyor belt 8 increases, but the cooling gas is usually concentrated in the outlet area of ​​the cooling air box 4. By adjusting the connection position of the cooling air box 4 on the mist equalization channel 3, the speed at which the cooling air blown from above the air quenching conveyor belt 8 hits the product can be adjusted, thereby regulating the cooling speed of the product.

[0051] A telescopic drive device 6 is installed between the cooling air box 4 and the air cooling chamber 7. The telescopic drive device 6 typically uses drive cylinders, and two drive cylinders are installed on either side of the cooling air box 4. The synchronous telescopic movement of the two drive cylinders drives the cooling air box 4 to rise and fall within the air cooling chamber 7, thus creating a relative telescopic movement between the cooling air box 4 and the mist equalization duct 3 fixed to the air cooling chamber 7. By utilizing the sliding connection between one cooling air box 4 and the mist equalization ducts 3 of the two air quenching cooling devices, the synchronous adjustment of the cooling airflow from the two air quenching cooling devices can be achieved by driving the cooling air box 4 to rise and fall.

[0052] In the description of this invention, the terms "one embodiment," "specific embodiment," "preferred embodiment," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this invention, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An air quenching and cooling device, characterized in that: It includes an air-cooled fan (1), a spray nozzle (2), a mist equalization duct (3), and a cooling air box (4); the spray nozzle (2) is located at the air outlet of the air-cooled fan (1), the mist equalization duct (3) is located between the air-cooled fan (1) and the cooling air box (4), and multiple water droplet removal structures (5) are provided in the mist equalization duct (3). The multiple water droplet removal structures (5) are evenly distributed in the airflow direction and the flow cross-section direction of the mist equalization duct (3), and are set corresponding to the entire flow cross-section of the mist equalization duct (3), so that the projection of the multiple water droplet removal structures (5) in the airflow direction covers the entire flow cross-section of the mist equalization duct (3); The water droplet removal structure (5) includes a water droplet removal panel (51) and a back plate (52). The water droplet removal panel (51) and the back plate (52) are connected to each other, and a receiving space for collecting the removed water droplets is formed between the water droplet removal panel (51) and the back plate (52). The water droplet removal panel (51) is inclined toward the air inlet of the mist equalization channel (3). A water tank (511) perpendicular to the airflow direction is provided on the water droplet removal panel (51). The water tank (511) passes through the water droplet removal panel (51) and connects the external airflow channel and the internal receiving space. The cooling air box (4) has an air box inlet (41) on one side. The air outlet of the mist equalization channel (3) is inserted into the air box inlet (41) and is slidably connected to the air box inlet (41). A telescopic drive device (6) is provided between the mist equalization channel (3) and the cooling air box (4).

2. The air quenching and cooling device according to claim 1, characterized in that: The water droplet removal structure (5) is disposed on the windward side of the mist equalization channel (3), and the water droplet removal panel (51) is disposed parallel to the back plate (52) and connected to each other around the perimeter.

3. The air quenching and cooling device according to claim 1, characterized in that: The water droplet removal structure (5) is disposed on one side of the mist equalization channel (3). The one side of the water droplet removal panel (51) and the back plate (52) are connected to each other, and the other sides are connected to the side wall of the mist equalization channel (3).

4. The air quenching and cooling device according to claim 1, characterized in that: The water droplet removal structure (5) is disposed inside the mist equalization channel (3). The middle part of the water droplet removal panel (51) is bent along the length direction. Both sides of the width direction of the water droplet removal panel (51) are connected to the back plate (52). Both sides of the length direction of the water droplet removal panel (51) and the back plate (52) are connected to the side wall of the mist equalization channel (3).

5. The air quenching and cooling apparatus according to any one of claims 1-4, characterized in that: The cooling air box (4) has an air distribution plate (42) at its air outlet, and the air distribution plate (42) has a plurality of evenly distributed air outlet holes.

6. An air quenching apparatus, comprising a heating chamber and an air cooling chamber (7), characterized in that: It also includes at least one air quenching cooling device according to any one of claims 1-5, wherein an air quenching conveyor belt (8) is provided in the air cooling chamber (7), and the cooling air box (4) is provided in the air cooling chamber (7) with its air outlet facing the air quenching conveyor belt (8).

7. The air quenching equipment according to claim 6, characterized in that: The air quenching cooling device is provided in multiple ways. The cooling air boxes (4) of the multiple air quenching cooling devices are respectively located on the upper and lower sides of the air quenching conveyor belt (8). The top of the air cooling chamber (7) is connected to the external space.

8. The air quenching equipment according to claim 7, characterized in that: Multiple air quenching and cooling devices are provided above the air quenching conveyor belt (8). Multiple air quenching and cooling devices use the same cooling air box (4). Multiple air box inlets (41) are provided on the upper side of the cooling air box (4). The outlet of the mist equalization channel (3) of each air quenching and cooling device is inserted into one of the air box inlets (41) and can slide relative to the air box inlet (41). The mist equalization channel (3) is fixedly connected to the air cooling chamber (7). A telescopic drive device (6) is provided between the cooling air box (4) and the air cooling chamber (7).

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