Efficient gas quenching chamber applying adjustable left-right reversing plate structure

Abstract

The invention belongs to the technical field of vacuum heat treatment, and discloses an efficient gas quenching chamber applying an adjustable left-right reversing plate structure, which comprises a shell, an adjustable flow guide device and a fan system, the gas quenching furnace shell is cylindrical, the upper part is provided with left and right lifting lug structures for lifting operation, the lower part is provided with a supporting structure for supporting the furnace body, the two sides of the shell are respectively provided with a motor, and the motors are connected with the impeller through rotating shafts extending into the furnace body and are used for controlling the rotating speed to drive the impeller to rotate and providing power for circulating flow of quenching gas in the furnace. The adjustable left-right reversing plate structure is adopted, flexible adjustment can be conducted according to the actual cooling requirement, the workpiece shape, the workpiece size and the like, the flowing direction and path of quenching gas are dynamically adjusted, and the stability and uniformity of the quenching gas under different working conditions are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum heat treatment, and in particular relates to a high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure. Background Art

[0002] Heat treatment is one of the basic processes of equipment manufacturing and also the core technology for improving the level of mechanical manufacturing. Vacuum high-pressure gas quenching has become one of the most widely used advanced heat treatment technologies in recent years due to its advantages of high efficiency, energy saving and surface cleaning. Under the background of national green manufacturing, energy conservation and emission reduction, improving gas quenching efficiency and uniformity of quenching gas flow plays an important role in reducing unit energy consumption and improving manufacturing level for enterprises. During high-pressure gas quenching, the quenching gas, under the guidance of the guide structure, brings heat from the workpiece to the heat exchanger. Whether this process can quickly and evenly take away the heat is closely related to the design of the guide structure. However, the existing gas quenching furnace guide structure is mostly fixed in the furnace body, with a single structure. The gas quenching furnace shell must be disassembled to adjust the guide structure, which is costly and difficult for users to adjust according to actual working conditions. In addition, the guide structure around the impeller, an important power component of the gas quenching furnace, is simple, and even lacks a guide structure in some directions, resulting in the inability to concentrate the direction of the airflow, causing this part of the gas to lose part of its kinetic energy before entering the workpiece area, reducing the working efficiency of the quenching chamber.

[0003] Through the above analysis, the problems and defects of the prior art are as follows:

[0004] (1) The existing flow guide structure design is often optimized based on a specific workpiece size and shape, and is fixedly set in the furnace body. However, in actual operation, the airflow in the furnace will change due to factors such as the placement of the workpiece and the fluctuation of the gas quenching pressure. The fixed design of the flow guide structure cannot be adjusted according to the actual cooling needs, resulting in unstable airflow, destroying the uniformity of the quenching process, and causing local overheating or overcooling of the workpiece. In addition, any airflow problems or unsatisfactory cooling effects during operation often need to be solved through manual disassembly or redesign, which is difficult to maintain.

[0005] (2) During the quenching operation, if the quenching gas flows in only one direction in the workpiece area, it is difficult to obtain uniform cooling of the workpiece. In this case, the quenching gas flow direction needs to be frequently reversed. However, the traditional gas quenching furnace only controls the flow direction of the quenching gas in the workpiece area by opening and closing the upper and lower flap valves. Regardless of the flow direction of the quenching gas, a part of the gas radially discharged from the centrifugal impeller is always blocked by the closed flap valve on the other side. There is a lack of guide structure to guide the gas, which directly impacts the shell, causing this part of the gas to lose some kinetic energy before entering the workpiece area, reducing the working efficiency of the quenching chamber. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure.

[0007] The present invention is implemented as follows: a high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure comprises:

[0008] Casing, adjustable flow guide device, fan system.

[0009] The gas quenching furnace shell is cylindrical, with left and right lifting ear structures on the upper part for lifting operations, and a supporting structure on the lower part for supporting the furnace body. A motor is installed on each side of the shell. The motor is connected to the impeller through a rotating shaft extending into the furnace body, and is used to control the speed to drive the impeller to rotate, thereby providing power for the circulation of quenching gas in the furnace.

[0010] Furthermore, the fan system includes an impeller, a collector ring, a front disk, and a rear disk. The impeller is a centrifugal impeller. When working, it rotates at a high speed driven by a motor to form a negative pressure area. Under the action of the pressure difference, the quenching gas in the furnace enters the impeller axially through the collector ring and is then discharged radially from the impeller.

[0011] Furthermore, the internal structure of the shell mainly includes four flap valve structures, upper and lower trapezoidal guide plates, workpiece area partition plates, upper and lower heat exchangers, and fan chamber partition plates. A circular area is cut out in the center of the fan chamber partition plate to accommodate the collecting ring structure. The flap valve is installed at the upper and lower ends of the fan chamber partition plate through a rotating shaft structure.

[0012] Furthermore, the gas quenching furnace controls the direction of the airflow in the workpiece area by opening and closing the flap valve. Taking the upward flow as an example, at this time, the flap valve 6 rotates to contact with the shell, preventing the gas discharged from the impeller from passing through, and is in a closed state. The flap valve 7 rotates to contact with one end of the heat exchanger shell, guiding the gas to pass through the lower heat exchanger into the workpiece area in the center of the furnace, and then continue to pass upward through the upper heat exchanger, and then enter the flow channel formed by the fan room partition and the workpiece area partition under the guidance of the upper guide plate, and finally return to the impeller through the collector, completing a gas cycle.

[0013] Furthermore, the adjustable flow guide device includes a left reversing plate 1, a left reversing plate 2, a left reversing plate 3, a right reversing plate 1, a right reversing plate 2, a right reversing plate 3, an outer slide rail, an inner slide rail, a left rotating flow guide plate, and a right rotating flow guide plate. A rotating shaft structure is respectively provided at both ends of the left reversing plate 2, a slide seat is connected below the rotating shaft, and two rollers are connected below the slide seat, and the rollers can rotate along the outer slide rail.

[0014] Furthermore, one end of the left reversing plate 1 is connected to the rotating shaft at one end of the left reversing plate 2, and a power component is installed on the upper part of the rotating shaft for driving the left reversing plate 1 and the left reversing plate 2 to rotate coaxially. Similarly, one end of the left reversing plate 3 is connected to the rotating shaft at one end of the left reversing plate 2, and a power component is installed on the upper part of the rotating shaft for driving the left reversing plate 1 and the left reversing plate 2 to rotate coaxially. The right reversing plate structure and the left reversing plate structure adopt the same connection structure and movement mode. The left and right reversing plates 2 are rotated on the outer slide rail, and the left and right reversing plates 1 and 3 are driven to follow the movement, so as to realize the adjustment of the guide structure in the circumferential direction. The coaxial rotation of the left and right reversing plates 1 and 3 and the left and right reversing plates 2 is controlled by the power component, so as to realize the adjustment of the angles between the reversing plate structures.

[0015] Furthermore, two slide seats are connected to the lower part of the left-rotating guide plate and the right-rotating guide plate, and two rollers are connected under each slide seat, and the rollers rotate along the inner slide rail; taking the upward flow of quenching gas in the furnace as an example, at this time, the left-rotating reversing plate rotates clockwise along the inner slide rail driven by the rollers, and the right-rotating reversing plate rotates counterclockwise along the inner slide rail driven by the rollers, and the left and right rotating guide plates stop rotating after contacting each other, and finally form an arc-shaped guide structure on the upper part of the impeller, so as to prevent the quenching gas discharged from the impeller in this direction from directly impacting the upper shell without the guidance of the guide structure, and being blocked by the flap valve, resulting in kinetic energy loss.

[0016] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:

[0017] 1) The present invention adopts an adjustable left and right reversing plate structure, which can be flexibly adjusted according to actual cooling requirements, workpiece shape, size, etc., dynamically adjust the flow direction and path of the quenching gas, and ensure the stability and uniformity of the quenching gas under different working conditions.

[0018] 2) The traditional gas quenching furnace only controls the flow direction of the quenching gas in the workpiece area through the flap valve. Regardless of the flow direction of the quenching gas, a part of the gas discharged radially from the centrifugal impeller is always blocked by the flap valve and directly impacts the shell, causing this part of the gas to lose a part of its kinetic energy before entering the workpiece area, thereby reducing the working efficiency of the quenching chamber. The present invention improves the guide structure at the impeller outlet through the rotation and displacement control of the rotating guide plate and the left and right reversing plates, reduces the kinetic energy loss of the quenching gas, and improves the working efficiency of the quenching chamber.

[0019] 3) Simplify maintenance and adjustment, and reduce operating costs; the adjustable guide structure design of the present invention can achieve changes in the airflow path through simple adjustments, without the need for manual disassembly of the equipment, thereby reducing maintenance costs.

[0020] 4) The present invention can make targeted adjustments according to the upward or downward flow direction changes of the airflow in the workpiece area. Through the rotational movement of the rotating guide plates distributed on the left and right sides along the inner slide groove, the circular arc guide structure surrounding the impeller formed by the rotating guide plates is combined with the gradually expanding outlet design formed by the left and right reversing plates, so as to fully guide the quenching gas, reduce flow losses and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of a high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure provided in an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal structure of a gas quenching furnace provided in an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the upward flow direction of quenching gas in a furnace provided by an embodiment of the present invention.

[0024] Figure 4 It is a schematic diagram of an adjustable left and right reversing plate provided in an embodiment of the present invention.

[0025] Figure 5 It is a working schematic diagram of the adjustable left and right reversing plates provided in an embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of the slide and roller structure provided by an embodiment of the present invention.

[0027] In the figure: 1. shell; 2. lifting ear structure; 3. motor; 4. furnace body; 5. rotating shaft; 6. flap valve; 7. flap valve; 8. flap valve; 9. flap valve; 10. upper trapezoidal guide plate; 11. lower trapezoidal guide plate; 12. power component; 13. upper heat exchanger; 14. lower heat exchanger; 15. slide seat; 16. roller; 17. left reversing plate 1; 18. left reversing plate 2; 19. left reversing plate 3; 20. right reversing plate 1; 21. right reversing plate 2; 22. right reversing plate 3; 23. outer slide rail; 24. inner slide rail; 25. left rotating guide plate; 26. right rotating guide plate; 27. impeller; 28. collector ring; 29. ​​front disc; 30. rear disc. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] like Figure 1 , Figure 2 , Figure 3As shown, the present invention provides a high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure. Its main structure includes: a housing, an adjustable flow guide device, and a fan system;

[0030] The gas quenching furnace shell 1 is cylindrical, with left and right lifting ear structures 2 on the upper part for lifting operation, and a supporting structure on the lower part for supporting the furnace body 4. A motor 3 is installed on each side of the shell. The motor is connected to the impeller 27 through a rotating shaft 5 extending into the furnace body, which is used to control the rotation speed to drive the impeller 27 to rotate, thereby providing power for the circulation of quenching gas in the furnace; the fan system includes an impeller 27, a collector ring 28, a front plate 29, and a rear plate 30. The impeller 27 is a centrifugal impeller. When working, it rotates at a high speed driven by the motor 3 to form a negative pressure area. Under the action of the pressure difference, the quenching gas in the furnace enters the impeller 27 axially through the collector ring 28 and is then discharged radially from the impeller; the internal structure of the shell mainly includes four flap valve structures 6, 7, 8, 9, upper and lower trapezoidal guide plates 11, 10, a workpiece area partition plate 29, and upper and lower heat exchangers 1 3. 14. Fan chamber partition 28. A circular area is cut out from the center of the fan chamber partition 28 to place the collector ring structure 28. The flap valves 6, 7, 8, and 9 are installed at the upper and lower ends of the fan chamber partition 28 through a rotating shaft structure. The gas quenching chamber controls the airflow direction of the workpiece area by opening and closing the flap valves 6, 7, 8, and 9. Taking the upward flow as an example, at this time, the flap valve 6 rotates to contact with the shell to prevent the gas discharged from the impeller from passing through, and is in a closed state. The flap valve 7 rotates to contact with one end of the heat exchanger shell to guide the gas through the lower heat exchanger 14 into the workpiece area in the center of the furnace, and then continues to pass through the upper heat exchanger 13 upward, and then enters the flow channel formed by the fan chamber partition 28 and the workpiece area partition 29 under the guidance of the upper guide plate 11, and finally returns to the impeller 27 through the collector ring 28 to complete a gas cycle;

[0031] The adjustable flow guide device includes a left reversing plate 117, a left reversing plate 218, a left reversing plate 319, a right reversing plate 120, a right reversing plate 221, a right reversing plate 322, an outer slide rail 23, an inner slide rail 24, a left rotating flow guide plate 25, and a right rotating flow guide plate 26. The left reversing plate 221 is provided with a rotating shaft structure 27, 28 at both ends, and a slide seat 15 is connected below the rotating shaft 27, 28. Two rollers 16 are connected below the slide seat, and the rollers 16 can rotate along the outer slide rail; one end of the left reversing plate 117 is connected to the rotating shaft 27 at one end of the left reversing plate 218, and a power component 12 is installed on the upper part of the rotating shaft 27, 28 for driving the The left reversing plate 117 rotates coaxially with the left reversing plate 218. Similarly, one end of the left reversing plate 319 is connected to the rotating shaft 28 at one end of the left reversing plate 2. A power component 12 is installed on the upper part of the rotating shaft 28 to drive the left reversing plate 117 to rotate coaxially with the left reversing plate 218. The right reversing plate structure and the left reversing plate structure adopt the same connection structure and movement mode. The left and right reversing plates 2 rotate on the outer slide rail 23 and drive the left and right reversing plates 1 and 3 to follow the movement, so as to realize the adjustment of the guide structure in the circumferential direction. The coaxial rotation of the left and right reversing plates 1 and 3 and the left and right reversing plates 2 is controlled by the power component 12 to realize the adjustment of the angles between the reversing plate structures. Two slide seats 15 are connected to the lower part of the left and right rotating guide plates 25 and 26, and two rollers 16 are connected to the lower part of each slide seat 15. The rollers 16 rotate along the inner slide rail 24. Taking the upward flow of quenching gas in the furnace as an example, at this time, the left rotating reversing plate 25 rotates clockwise along the inner slide rail 24 driven by the rollers 16, and the right rotating reversing plate 26 rotates counterclockwise along the inner slide rail 24 driven by the rollers 16. The left and right rotating guide plates 25 and 26 stop rotating after contacting each other, and finally form an arc-shaped guide structure on the upper part of the impeller to prevent the quenching gas discharged from the impeller in this direction from directly impacting the upper shell without the guidance of the guide structure, and being blocked by the flap valve 6, resulting in kinetic energy loss.

[0032] like Figure 4 , Figure 5 , Figure 6As shown, a high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure is characterized by an adjustable flow guide device, including a left reversing plate 117, a left reversing plate 218, a left reversing plate 319, a right reversing plate 120, a right reversing plate 221, a right reversing plate 322, an outer slide rail 23, an inner slide rail 24, a left rotating guide plate 25, and a right rotating guide plate 26. The left reversing plate 221 is provided with a rotating shaft structure 27, 28 at both ends, and a slide 15 is connected below the rotating shaft 27, 28, and two rollers 16 are connected below the slide, and the rollers 16 can rotate along the outer slide rail; one end of the left reversing plate 117 is connected to the rotating shaft 27 at one end of the left reversing plate 218, and a power component 12 is installed on the upper part of the rotating shaft 27, 28, for driving the left reversing plate 117 and the left reversing plate 218 to rotate coaxially. Similarly, one end of the left reversing plate 319 is connected to the left reversing plate 2 at one end. The left and right reversing plates 117 and 218 are connected to each other by a rotating shaft 28, and a power component 12 is installed on the upper part of the rotating shaft 28, which is used to drive the left reversing plate 117 to rotate coaxially with the left reversing plate 218; the right reversing plate structure and the left reversing plate structure adopt the same connection structure and movement mode, and the left and right reversing plates 2 are rotated on the outer slide rail 23, and the left and right reversing plates 1 and 3 are driven to follow the movement, so as to realize the adjustment of the guide structure in the circumferential direction, and the coaxial rotation of the left and right reversing plates 1 and 3 and the left and right reversing plates 2 is controlled by the power component 12, so as to realize the adjustment of the angles between the reversing plate structures. The lower part of the left and right rotating guide plates 25 and 26 is connected to two slide seats 15, and two rollers 16 are connected under each slide seat 15. The rollers 16 rotate along the inner slide rail 24. The working method is as follows: when the impeller 27 is working, it rotates at a high speed driven by the motor 3 to form a negative pressure area. Under the action of the pressure difference, the quenching gas in the furnace enters the impeller 27 axially through the collector 28 and is then discharged radially from the impeller. Taking the upward flow as an example, at this time, the left rotating reversing plate 25 rotates clockwise along the inner slide rail 24 driven by the rollers 16, and the right rotating reversing plate 26 rotates counterclockwise along the inner slide rail 24 driven by the rollers 16. The left and right rotating guide plates 25 and 26 stop rotating after contacting each other. Finally, an arc-shaped guide structure is formed on the upper part of the impeller. The arc-shaped guide structure and the left and right reversing plates 218, 21, and the left and right reversing plates 319, 22 together form a complete guide structure to guide the gas discharged from the impeller to move in the specified direction; at the same time, the flap valve 6 rotates to contact with the shell to prevent the gas discharged from the impeller from passing through, and is in a closed state. The flap valve 7 rotates to contact with one end of the heat exchanger shell to guide the gas through the lower heat exchanger 14 into the workpiece area in the center of the furnace, and then continues to pass upward through the upper heat exchanger 13, and then under the guidance of the upper guide plate 11, enters the flow channel formed by the fan chamber partition 28 and the workpiece area partition 29, and finally returns to the impeller 27 through the collecting ring 28 to complete a gas cycle.

[0033] The gas circulation in the gas quenching chamber is driven by the impeller system, and the motor drives the impeller to rotate at high speed to form a negative pressure zone. Under the action of the pressure difference, the quenching gas enters the impeller axially through the collector ring and is then discharged radially from the impeller. Taking the upward flow as an example, the flap valve 6 rotates to contact the shell to prevent the gas from flowing in the non-target direction. At the same time, the flap valve 7 rotates to contact the lower heat exchanger shell, guiding the gas through the lower heat exchanger into the workpiece area to improve the uniformity of the gas temperature. The gas then passes through the upper heat exchanger and the upper guide plate, and finally enters the collector ring through the flow channel formed by the fan chamber partition and the workpiece area partition to complete the cycle.

[0034] The gas quenching chamber realizes flexible adjustment of the flow direction through the adjustable left and right reversing plate structure. The left and right reversing plates 2 can rotate along the outer slide rail, and drive the reversing plates 1 and 3 to rotate coaxially, adjust the angle between the reversing plates, and form an optimized flow guide structure. The rotating guide plates 25 and 26 gradually move together and form an arc-shaped flow guide structure through the movement of the rollers on the inner slide rail, effectively guiding the gas flow direction. This flow guide structure avoids the kinetic energy loss caused by the gas directly impacting the upper shell due to lack of guidance after being discharged from the impeller, thereby improving the efficiency and stability of gas flow.

[0035] During the gas circulation process, the lower heat exchanger and the upper heat exchanger are responsible for the heat exchange and temperature regulation of the gas respectively. The quenching gas exchanges heat with the heat exchange medium when flowing through the heat exchanger, ensuring that the temperature uniformity of the gas in the workpiece area meets the process requirements. At the same time, the upper and lower trapezoidal guide plates optimize the path of the gas flowing through the heat exchanger, improve the heat exchange efficiency, and avoid the impact of local overheating or overcooling on the performance of the workpiece.

[0036] The dynamic adjustment of the gas quenching chamber is achieved by the synchronous movement of the reversing plate and the rotating guide plate driven by the power components. The precise coordination between the components ensures that the gas maintains a stable flow during the conversion of different flow directions. Taking the upward flow as an example, the gas discharged from the impeller enters the designated path under the guidance of the reversing plate and the rotating guide plate, passes through the heat exchanger to the workpiece area, and is then guided back to the impeller through the guide plate to form a complete circulation path. The entire system realizes the functional integration of efficient gas circulation, uniform heat exchange and dynamic flow guidance under precise control, which improves the working efficiency and performance of the gas quenching chamber.

[0037] The fan system is used to circulate the quenching gas in the shell of the gas quenching chamber. The impeller is driven by a motor to rotate at high speed, forming a negative pressure zone. Under the action of the pressure difference, the gas enters the impeller from the axial direction through the collector ring and is discharged from the radial direction. After the gas flows through the flap valve, it enters the workpiece area through the upper and lower heat exchangers and guide plates to complete the uniform cooling of the workpiece. Finally, the gas returns to the collector ring through the flow channel between the workpiece area partition and the fan chamber partition, forming a closed circulation path, thereby ensuring the continuous circulation of the gas and heat exchange.

[0038] The flap valve structure is used to adjust the direction of the airflow. When the gas needs to flow upward, the flap valve 6 is closed and contacts the shell to block the gas discharged from the impeller. The flap valve 7 is opened to guide the gas to flow through the lower heat exchanger, the workpiece area and the upper heat exchanger, and then enter the fan chamber partition again to form a complete gas flow cycle. By switching the flap valve on and off, the airflow direction can be adjusted to flow upward or downward as needed to meet the cooling needs of different workpieces.

[0039] The adjustable left and right reversing plates realize movement and angle adjustment through slide rails and power components. The left and right reversing plates 2 rotate on the outer slide rails, driving the left and right reversing plates 1 and 3 to adjust the diversion angle along the circumferential direction. At the same time, the reversing plates are coaxially rotated through the power components to further adjust the angle relationship between the reversing plates and optimize the airflow direction. During the gas circulation process, the reversing plates effectively control the flow direction of the gas, ensuring that the gas can be reasonably guided to the workpiece area or other target areas, improving the uniformity and efficiency of the gas flow.

[0040] The left and right rotating guide plates can rotate clockwise and counterclockwise through the inner slide rail system. When the quenching gas flows upward, the left and right rotating guide plates rotate along the inner slide rails driven by the rollers and finally contact each other to form an arc-shaped guide structure. This guide structure guides the gas discharged from the impeller to be evenly distributed, avoiding the gas directly impacting the top of the shell and causing kinetic energy loss, while improving the guiding efficiency of the airflow. Through the cooperation of the left and right rotating guide plates, the quenching gas can flow smoothly in the impeller area and the power loss is minimized.

[0041] Example 1: High-efficiency gas quenching chamber for quenching of aircraft engine blades

[0042] The aircraft engine blade is placed in the workpiece area of ​​the gas quenching chamber, the horizontal position of the gas quenching chamber is adjusted by the lifting ear structure, and the gas quenching chamber is fixed by the supporting structure. The temperature adjustment system of the upper and lower heat exchangers is preset in the gas quenching chamber to ensure the uniformity of the air flow temperature. The motor drives the impeller 27 to rotate at a high speed to form a stable gas circulation. The air flow direction is controlled by the flap valve structure to ensure uniform cooling of the blade surface.

[0043] According to the blade shape and quenching requirements, the angles of the left and right reversing plates are adjusted to make the airflow evenly cover the blade surface. The left and right rotating guide plates rotate along the slide rails to form an arc-shaped guide structure to reduce the energy loss caused by the gas directly impacting the shell. The optimized guide path effectively improves the flow efficiency and cooling uniformity of the airflow.

[0044] During operation, the airflow is discharged from the impeller and cooled by the heat exchanger, passes through the workpiece area to cool the blade surface, and then flows back to the impeller through the workpiece area partition and the fan chamber partition. During the circulation process, the temperature and speed of the quenching gas remain stable, ensuring uniform cooling of the blade surface and avoiding local overcooling or overheating that may occur in traditional quenching processes.

[0045] Example 2: High-efficiency gas quenching chamber for batch heat treatment of automotive parts

[0046] Place automotive parts (such as gears) in batches in the workpiece area, and arrange them in a way that ensures smooth gas flow. Start the motor to drive the impeller, set the airflow path inside the gas quenching chamber to the downward flow mode, and control the gas flow direction by opening and closing the flap valve. The quenching gas exchanges heat through the upper and lower heat exchangers to ensure that the gas temperature meets the heat treatment requirements of the workpiece material.

[0047] According to the arrangement of the workpieces, the angles of the left and right reversing plates are adjusted through the power components to optimize the gas distribution and make the airflow in the workpiece area more uniform. The left and right rotating guide plates move synchronously to form an annular guide structure to avoid the formation of eddy current areas during gas flow, thereby improving cooling efficiency and stability.

[0048] During the quenching process, after the gas is discharged from the impeller, it passes through the heat exchanger to cool and enter the workpiece area. The cooled gas returns to the impeller through the collector to complete the cycle. The entire process ensures the consistency of temperature changes for each component and significantly shortens the cooling time. Through the dynamic adjustment of the reversing plate and the rotating guide plate, the air flow deviation or dead angle is reduced, further improving the cooling uniformity and efficiency.

[0049] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure, characterized in that: include: Casing, adjustable flow guide device, fan system; The gas quenching furnace shell is cylindrical, with left and right lifting ear structures on the upper part for lifting operations, and a supporting structure on the lower part for supporting the furnace body. A motor is installed on each side of the shell. The motor is connected to the impeller through a rotating shaft extending into the furnace body, and is used to control the speed to drive the impeller to rotate, thereby providing power for the circulation of quenching gas in the furnace.

2. The high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure as claimed in claim 1, characterized in that: The fan system includes an impeller, a collector ring, a front disk, and a rear disk. The impeller is a centrifugal impeller. When working, it rotates at a high speed driven by a motor to form a negative pressure area. Under the action of the pressure difference, the quenching gas in the furnace enters the impeller axially through the collector ring and is then discharged radially from the impeller.

3. The high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure as claimed in claim 1, characterized in that: The internal structure of the shell mainly includes four flap valve structures, upper and lower trapezoidal guide plates, workpiece area partition plates, upper and lower heat exchangers, and fan chamber partition plates. A circular area is cut out in the center of the fan chamber partition plate to accommodate the collecting ring structure. The flap valve is installed at the upper and lower ends of the fan chamber partition plate through a rotating shaft structure.

4. The high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure as claimed in claim 1, characterized in that: The gas quenching furnace controls the direction of the airflow in the workpiece area by opening and closing the flap valve. Taking the upward flow as an example, at this time, the flap valve 6 rotates to contact with the shell, preventing the gas discharged from the impeller from passing through, and is in a closed state. The flap valve 7 rotates to contact with one end of the heat exchanger shell, guiding the gas to pass through the lower heat exchanger into the workpiece area in the center of the furnace, and then continue to pass upward through the upper heat exchanger, and then enter the flow channel formed by the fan room partition and the workpiece area partition under the guidance of the upper guide plate, and finally return to the impeller through the collector, completing a gas cycle.

5. The high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure as claimed in claim 1, characterized in that: The adjustable flow guide device includes a left reversing plate 1, a left reversing plate 2, a left reversing plate 3, a right reversing plate 1, a right reversing plate 2, a right reversing plate 3, an outer slide rail, an inner slide rail, a left rotating flow guide plate, and a right rotating flow guide plate. A rotating shaft structure is respectively arranged at both ends of the left reversing plate 2, a slide seat is connected below the rotating shaft, and two rollers are connected below the slide seat, and the rollers can rotate along the outer slide rail.

6. The high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure as claimed in claim 5, characterized in that: One end of the left reversing plate 1 is connected to the rotating shaft at one end of the left reversing plate 2, and a power component is installed on the upper part of the rotating shaft for driving the left reversing plate 1 and the left reversing plate 2 to rotate coaxially. Similarly, one end of the left reversing plate 3 is connected to the rotating shaft at one end of the left reversing plate 2, and a power component is installed on the upper part of the rotating shaft for driving the left reversing plate 1 and the left reversing plate 2 to rotate coaxially. The right reversing plate structure and the left reversing plate structure adopt the same connection structure and movement mode. The left and right reversing plates 2 are rotated on the outer slide rail, and the left and right reversing plates 1 and 3 are driven to follow the movement, so as to realize the adjustment of the guide structure in the circumferential direction. The coaxial rotation of the left and right reversing plates 1 and 3 and the left and right reversing plates 2 is controlled by the power component, so as to realize the adjustment of the angles between the reversing plate structures.

7. The high-efficiency gas quenching chamber using an adjustable left and right reversing plate structure as claimed in claim 5, characterized in that: The lower parts of the left-rotating guide plate and the right-rotating guide plate are connected to two slide seats, and two rollers are connected under each slide seat, and the rollers rotate along the inner slide rail; taking the case where the quenching gas in the furnace flows upward as an example, at this time, the left-rotating reversing plate rotates clockwise along the inner slide rail driven by the rollers, and the right-rotating reversing plate rotates counterclockwise along the inner slide rail driven by the rollers, and the left and right rotating guide plates stop rotating after contacting each other, and finally form an arc-shaped guide structure on the upper part of the impeller, so as to prevent the quenching gas discharged from the impeller in this direction from directly impacting the upper shell without the guidance of the guide structure, and being blocked by the flap valve, resulting in kinetic energy loss.

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