Efficient nitriding furnace capable of being rapidly cooled

Abstract

The utility model relates to an efficient nitriding furnace capable of being rapidly cooled, which belongs to the technical field of nitriding furnaces and comprises an efficient nitriding furnace body, an inner container is arranged inside the efficient nitriding furnace body, a spiral cooling pipe is arranged on the outer surface of the inner container, and a furnace door is arranged at the top of the efficient nitriding furnace body. A lifting structure and a driving structure are arranged on the efficient nitriding furnace. According to the efficient nitriding furnace capable of being rapidly cooled, by arranging the lifting structure and the driving structure, an asynchronous motor is used as a driving source, and a threaded rod is controlled to rotate through mechanical transmission, so that a connecting frame in threaded connection with the outer surface of the threaded rod drives a furnace door to move up and down; therefore, the door opening and closing operation of the efficient nitriding furnace is automatically controlled, the labor intensity of workers is reduced, the spiral cooling pipe is adopted to surround the outer surface of the inner container, the cooling medium is input into the spiral cooling pipe, and therefore heat is rapidly taken away, and the rapid cooling effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of nitriding furnace technology, specifically a high-efficiency nitriding furnace with rapid cooling. Background Technology

[0002] A nitriding furnace is an advanced piece of equipment used for nitriding the surface of metal materials. It is a chemical heat treatment process that allows active nitrogen atoms to penetrate into the metal surface at a certain temperature, forming a nitrogen-rich hardened layer. High-efficiency nitriding furnaces can precisely control various parameters in the nitriding process, such as temperature, gas flow rate, and time, thereby significantly improving nitriding efficiency and quality. It is widely used in many fields such as machinery manufacturing, aerospace, and automotive industries. The nitriding furnace mainly consists of a shell and inner liner, furnace door, heating system, gas supply and circulation system, temperature control system, and other units. By optimizing parameters such as temperature, gas, and time, the nitriding cycle can be shortened by 30%-50%, greatly improving production efficiency. It is especially suitable for batch production and can meet the needs of large-scale industrial production.

[0003] In current technology, the furnace door of a nitriding furnace is fixed and sealed to the outer shell and inner liner by a snap-fit ​​mechanism. However, in the actual nitriding process, the furnace door must first be opened, then the workpiece to be processed is placed in the inner liner, and finally the door is closed and fixed. This results in a high labor intensity and is time-consuming for the workers during the nitriding process. Therefore, a high-efficiency nitriding furnace with rapid cooling is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-efficiency nitriding furnace with rapid cooling, which has the advantage of easy automatic opening and closing. It solves the problem that the furnace door of the nitriding furnace is fixed and sealed to the outer shell and inner liner by a buckle. In the actual nitriding process, the furnace door must first be opened, then the workpiece to be processed is placed in the inner liner, and finally the door is closed and fixed. This results in high labor intensity and time consumption for the workers during the nitriding process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency nitriding furnace capable of rapid cooling, comprising a high-efficiency nitriding furnace, wherein the interior of the high-efficiency nitriding furnace is provided with an inner liner, the outer surface of the inner liner is provided with a spiral cooling pipe, the top of the high-efficiency nitriding furnace is provided with a furnace door, and the high-efficiency nitriding furnace is provided with a lifting structure and a driving structure.

[0006] The lifting structure includes an installation frame fixedly mounted on the outer surface of the high-efficiency nitriding furnace. A support frame is fixedly mounted on the rear side wall of the inner cavity of the installation frame. A connecting frame is slidably mounted inside the support frame, with one end penetrating the support frame and extending to the outside of the installation frame. The connecting frame is fixedly connected to the top of the furnace door. A guide component is provided inside the installation frame to limit the movement trajectory of the connecting frame. An anti-detachment component is provided inside the support frame to stabilize the connecting frame. A threaded rod is rotatably mounted between the inner bottom wall and the inner top wall of the installation frame, with one end penetrating and extending to the outside, for controlling the up and down movement of the connecting frame.

[0007] Furthermore, the drive structure includes an asynchronous motor fixedly mounted on the top of the mounting frame, a transmission component for driving the threaded rod to rotate is provided on one side of the asynchronous motor, and a sensing component for controlling the asynchronous motor to turn on and off is provided on the inner top wall of the support frame.

[0008] Furthermore, the inner liner is fixedly connected to the efficient nitriding furnace, and the spiral cooling pipe is fixedly installed on the outer surface of the inner liner, with both ends of the spiral cooling pipe penetrating and extending to the outside of the efficient nitriding furnace.

[0009] Furthermore, the connecting frame includes a connecting bracket and a fixing screw. The connecting bracket is threaded onto the outer surface of the threaded rod, and one end of the fixing screw passes through the connecting bracket and extends into the interior of the furnace door. The fixing screw is threadedly connected to the furnace door.

[0010] Furthermore, the anti-detachment component includes a limiting plate and a rectangular groove. The rectangular groove is formed inside the connecting frame. The limiting plate is fixedly installed between the inner top wall and the inner bottom wall of the support frame. The outer surface of the limiting plate is slidably connected to the inner wall of the rectangular groove.

[0011] Furthermore, the guiding component includes two guide rods, both of which are fixedly installed between the inner top wall and the inner bottom wall of the mounting frame. One end of each guide rod passes through the connecting frame and is slidably connected to the inner wall of the connecting frame.

[0012] Furthermore, the transmission component includes two bevel gears, the outer surfaces of the two bevel gears meshing with each other, and the two bevel gears are respectively fixedly installed on the outer surfaces of the asynchronous motor output shaft and the threaded rod.

[0013] Furthermore, the sensing component includes two pressure sensors, which are respectively fixedly installed on the inner top wall of the support frame, and both pressure sensors are electrically connected to the asynchronous motor.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This high-efficiency nitriding furnace with rapid cooling, equipped with a lifting and driving structure, utilizes an asynchronous motor as the driving source and mechanical transmission to control the rotation of a threaded rod. This causes the connecting frame, connected to the threaded outer surface of the threaded rod, to move the furnace door up and down, thereby achieving automatic control of the opening and closing operation of the high-efficiency nitriding furnace. This reduces the labor intensity of the workers. Furthermore, a spiral cooling pipe surrounds the outer surface of the inner liner. By inputting a cooling medium into the spiral cooling pipe, heat is quickly removed, achieving a rapid cooling effect. This further enhances the practicality of the high-efficiency nitriding furnace with rapid cooling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 Enlarged view of point A in the image;

[0018] Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 1 A three-dimensional view of the lifting structure.

[0019] In the diagram: 1. High-efficiency nitriding furnace; 2. Inner liner; 3. Spiral cooling pipe; 4. Furnace door; 51. Mounting frame; 52. Support frame; 53. Connecting frame; 54. Guide component; 55. Anti-detachment component; 56. Threaded rod; 57. Asynchronous motor; 58. Transmission component; 59. Induction component. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3 This embodiment of a high-efficiency nitriding furnace with rapid cooling includes a high-efficiency nitriding furnace 1. The high-efficiency nitriding furnace 1 has an inner liner 2 inside, and a spiral cooling pipe 3 is provided on the outer surface of the inner liner 2. The high-efficiency nitriding furnace 1 has a furnace door 4 on top, and a lifting structure and a driving structure are provided on the high-efficiency nitriding furnace 1. The inner liner 2 is fixedly connected to the high-efficiency nitriding furnace 1, and the spiral cooling pipe 3 is fixedly installed on the outer surface of the inner liner 2, with both ends of the spiral cooling pipe 3 penetrating and extending to the outside of the high-efficiency nitriding furnace 1.

[0022] In this embodiment, the lifting structure includes a mounting frame 51 fixedly installed on the outer surface of the high-efficiency nitriding furnace 1. A support frame 52 is fixedly installed on the rear side wall of the inner cavity of the mounting frame 51. A connecting frame 53 is slidably installed inside the support frame 52, with one end penetrating through the support frame 52 and extending to the outside of the mounting frame 51. The connecting frame 53 is fixedly connected to the top of the furnace door 4. A guide component 54 is provided inside the mounting frame 51 to limit the movement trajectory of the connecting frame 53. The guide component 54 includes two guide rods, both of which are fixedly installed between the inner top wall and the inner bottom wall of the mounting frame 51. One end of the guide rods penetrates the connecting frame 53 and is connected to the connecting frame 53. The inner wall is slidably connected to restrict the connecting frame 53 to move stably up and down only on the outer surface of the guide rod. The support frame 52 is provided with an anti-detachment component 55 for stabilizing the connecting frame 53. A threaded rod 56 is rotatably installed between the inner bottom wall and the inner top wall of the mounting frame 51, with one end penetrating through and extending to the outside of the rod and used to control the up and down movement of the connecting frame 53. The connecting frame 53 includes a connecting bracket and a fixing screw. The connecting bracket is threadedly installed on the outer surface of the threaded rod 56. One end of the fixing screw penetrates through the connecting bracket and extends into the interior of the furnace door 4. The fixing screw is threadedly connected to the furnace door 4, so that rotating the threaded rod 56 can control the up and down movement of the connecting frame 53.

[0023] The anti-detachment component 55 includes a limiting plate and a rectangular groove. The rectangular groove is opened inside the connecting frame 53. The limiting plate is fixedly installed between the inner top wall and the inner bottom wall of the support frame 52. The outer surface of the limiting plate is slidably connected to the inner wall of the rectangular groove to prevent the connecting frame 53 from detaching from the support frame 52 during the up and down movement.

[0024] By adopting the above technical solution, the rotation of the threaded rod 56 is controlled by the drive structure, which causes the connecting bracket connected to the thread on the outer surface of the threaded rod 56 to move upward. This, in turn, controls the connecting frame 53 on the outer surface of the guide rod and drives the furnace door 4 to move upward, thereby achieving automatic opening of the furnace door 4. After nitriding is completed, cooling medium can be introduced into the spiral cooling pipe 3 to quickly remove heat using the flowing cooling medium, thus achieving rapid cooling.

[0025] In this embodiment, the drive structure includes an asynchronous motor 57 fixedly mounted on the top of the mounting frame 51. A transmission component 58 for driving the threaded rod 56 to rotate is provided on one side of the asynchronous motor 57. The transmission component 58 includes two bevel gears with their outer surfaces meshing. The two bevel gears are fixedly mounted on the output shaft of the asynchronous motor 57 and the outer surface of the threaded rod 56, respectively, so that the output shaft rotates and the threaded rod 56 is driven to rotate by the two meshing bevel gears. A sensing component 59 for controlling the asynchronous motor 57 to turn off is provided on the inner top wall of the support frame 52.

[0026] The sensing component 59 includes two pressure sensors, which are fixedly installed on the inner top wall of the support frame 52. Both pressure sensors are electrically connected to the asynchronous motor 57. The movable connecting frame 53 presses the pressure sensors in the sensing component 59, thereby triggering the asynchronous motor 57 to shut down, and thus fixing the position of the connecting frame 53 and the furnace door 4.

[0027] Using the above technical solution, the asynchronous motor 57 at the top of the mounting frame 51 is started, which drives the output shaft to rotate. The rotating output shaft drives the threaded rod 56 to rotate through two meshing bevel gears in the transmission component 58, and the pressure sensor in the pressure sensing component 59 of the moving connecting frame 53 is pressed, thereby triggering the asynchronous motor 57 to shut down, and thus fixing the position of the connecting frame 53 and the furnace door 4.

[0028] The working principle of the above embodiments is as follows:

[0029] In operation, this high-efficiency nitriding furnace with rapid cooling operates by activating the asynchronous motor 57 at the top of the mounting frame 51. The asynchronous motor 57 drives the output shaft to rotate, which in turn drives the threaded rod 56 to rotate via two meshing bevel gears in the transmission component 58. This causes the connecting bracket connected to the threaded rod 56 to move upward, thereby controlling the connecting frame 53 on the outer surface of the guide rod and moving the furnace door 4 upward until the moving connecting frame 53 presses against the pressure sensor in the sensing component 59, triggering the asynchronous motor 57 to shut down. This then fixes the positions of the connecting frame 53 and the furnace door 4, thus automatically opening the furnace door 4. After nitriding is completed, cooling medium can be introduced into the spiral cooling pipe 3 to quickly remove heat, achieving rapid cooling.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency nitriding furnace capable of rapid cooling, comprising a high-efficiency nitriding furnace (1), characterized in that: The high-efficiency nitriding furnace (1) is provided with an inner liner (2), and the outer surface of the inner liner (2) is provided with a spiral cooling pipe (3). The top of the high-efficiency nitriding furnace (1) is provided with a furnace door (4), and the high-efficiency nitriding furnace (1) is provided with a lifting structure and a driving structure. The lifting structure includes an installation frame (51) fixedly installed on the outer surface of the high-efficiency nitriding furnace (1). A support frame (52) is fixedly installed on the rear side wall of the inner cavity of the installation frame (51). A connecting frame (53) is slidably installed inside the support frame (52), with one end penetrating through the support frame (52) and extending to the outside of the installation frame (51). The connecting frame (53) is fixedly connected to the top of the furnace door (4). A guide component (54) for limiting the movement trajectory of the connecting frame (53) is provided inside the installation frame (51). An anti-detachment component (55) for stabilizing the connecting frame (53) is provided inside the support frame (52). A threaded rod (56) for controlling the up and down movement of the connecting frame (53) is rotatably installed between the inner bottom wall and the inner top wall of the installation frame (51), with one end penetrating through and extending to the outside.

2. The high-efficiency nitriding furnace with rapid cooling according to claim 1, characterized in that: The drive structure includes an asynchronous motor (57) fixedly installed on the top of the mounting frame (51). A transmission component (58) for driving the threaded rod (56) to rotate is provided on one side of the asynchronous motor (57). A sensing component (59) for controlling the asynchronous motor (57) to stop is provided on the inner top wall of the support frame (52).

3. The high-efficiency nitriding furnace with rapid cooling according to claim 1, characterized in that: The inner liner (2) is fixedly connected to the nitriding furnace (1), and the spiral cooling pipe (3) is fixedly installed on the outer surface of the inner liner (2), with both ends of the spiral cooling pipe (3) penetrating and extending to the outside of the nitriding furnace (1).

4. The high-efficiency nitriding furnace with rapid cooling according to claim 1, characterized in that: The connecting frame (53) includes a connecting bracket and a fixing screw. The connecting bracket is threaded onto the outer surface of the threaded rod (56). One end of the fixing screw passes through the connecting bracket and extends into the interior of the furnace door (4). The fixing screw is threadedly connected to the furnace door (4).

5. The high-efficiency nitriding furnace with rapid cooling according to claim 1, characterized in that: The anti-detachment component (55) includes a limiting plate and a rectangular groove. The rectangular groove is opened inside the connecting frame (53). The limiting plate is fixedly installed between the inner top wall and the inner bottom wall of the support frame (52). The outer surface of the limiting plate is slidably connected to the inner wall of the rectangular groove.

6. The high-efficiency nitriding furnace with rapid cooling according to claim 1, characterized in that: The guide component (54) includes two guide rods, both of which are fixedly installed between the inner top wall and the inner bottom wall of the mounting frame (51). One end of each guide rod passes through the connecting frame (53) and is slidably connected to the inner wall of the connecting frame (53).

7. The high-efficiency nitriding furnace with rapid cooling according to claim 2, characterized in that: The transmission component (58) includes two bevel gears, the outer surfaces of the two bevel gears meshing with each other, and the two bevel gears are respectively fixedly installed on the outer surfaces of the output shaft of the asynchronous motor (57) and the threaded rod (56).

8. A high-efficiency nitriding furnace with rapid cooling according to claim 2, characterized in that: The sensing component (59) includes two pressure sensors, which are fixedly installed on the inner top wall of the support frame (52) and are electrically connected to the asynchronous motor (57).

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