Nut carburizing treatment device

Abstract

The utility model discloses a nut carburizing treatment device which comprises a carburizing furnace body, a furnace cover and a material placing assembly, a plurality of side gas inlet ring pipes are arranged on the periphery of the carburizing furnace body, the side gas inlet ring pipes are communicated through a main gas inlet pipe, side gas inlet branch pipes are installed on the side gas inlet ring pipes, and the side gas inlet branch pipes are communicated with the side wall of the carburizing furnace body; a main exhaust pipe is mounted on the carburizing furnace body, and a bottom gas inlet communicated with the main gas inlet pipe is formed in the bottom of the carburizing furnace body; the material containing assembly comprises a bottom cover, a hollow rod and steel wool. The hollow rod is sleeved with the nut and the steel wool, the nut is separated through the steel wool, the contact effect of the nut and treatment gas can be improved, the treatment gas is evenly conveyed into the carburizing furnace body through the side gas inlet branch pipe, the treatment gas is conveyed to the inner side of the nut through the hollow rod, and the nut makes even contact with the treatment gas. Treatment gas in the carburizing furnace body circularly flows, so that the diffusion efficiency of the treatment gas can be improved, and the carburizing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carburizing treatment, in particular to a nut carburizing treatment device. Background Art

[0002] When producing high-strength nuts, the nuts need to be carburized to improve the performance of the nuts.

[0003] When carburizing nuts, the existing carburizing device stacks the nuts together and sends them into a carburizing furnace, and then injects a treatment gas into the carburizing furnace to carburize the nuts. However, since the nuts are randomly stacked together, the nuts inside the nut pile cannot fully contact the treatment gas, and the parts of the nuts outside the nut pile that are in contact with the remaining nuts cannot fully contact the treatment gas. In addition, the diffusion rate of the treatment gas in the carburizing furnace and inside the nut pile is slow, resulting in a decrease in carburizing efficiency, and the carburizing effect needs to be improved.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility Model Content

[0005] Based on this, it is necessary to provide a nut carburizing treatment device to address the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a nut carburizing processing device, including a carburizing furnace body and a furnace cover for covering the top of the carburizing furnace body, a plurality of side air intake ring pipes are arranged on the periphery of the carburizing furnace body from top to bottom, each side air intake ring pipe is connected through a main air intake pipe, a plurality of evenly distributed side air intake branch pipes are installed on the side air intake ring pipes, and the side air intake branch pipes are connected with the side wall of the carburizing furnace body; a main exhaust pipe is installed on the carburizing furnace body, and a bottom air inlet connected with the main air intake pipe is arranged at the bottom of the carburizing furnace body; it also includes a material placing assembly, the material placing assembly includes a bottom cover, a hollow rod and steel wool, the bottom of the bottom cover is an open structure, the bottom cover is used to shield the bottom air inlet, the hollow rod is fixedly installed on the bottom cover and connected with the bottom cover, a plurality of air outlet holes are arranged on the hollow rod, the hollow rod is used to insert steel wool and nuts, and the steel wool and nuts are alternately distributed on the hollow rod.

[0007] Preferably, it also includes an exhaust device, which is installed on the main exhaust pipe.

[0008] Preferably, it also includes a first three-way solenoid valve, a second three-way solenoid valve, a first branch exhaust pipe, a second branch exhaust pipe, and a raw gas intake pipe. One end of the main exhaust pipe is connected to the carburizing furnace body, and the other end of the main exhaust pipe is connected to the input end of the first three-way solenoid valve. The two output ends of the first three-way solenoid valve are respectively connected to the first branch exhaust pipe and the second branch exhaust pipe, the other end of the second branch exhaust pipe is connected to one of the input ends of the second three-way solenoid valve, the other input end of the second three-way solenoid valve is connected to the raw gas intake pipe, and the output end of the second three-way solenoid valve is connected to the main intake pipe.

[0009] Preferably, a plurality of hollow rods are provided, and the hollow rods are distributed in a circle on the bottom cover.

[0010] Preferably, a suspension rod is fixed at the center of the bottom cover, and a suspension ring is fixed at the upper end of the suspension rod.

[0011] Preferably, a lifting lug is fixed on the top of the furnace cover.

[0012] The beneficial effects of the technical solution are as follows: by putting the nut and the steel wool on the hollow rod, the nut is separated by the steel wool, and the multi-space characteristics of the steel wool are utilized to support the nut and facilitate gas flow, thereby improving the contact effect between the nut and the processing gas and improving the carburizing efficiency;

[0013] The treated gas is evenly delivered to the carburizing furnace body through the side air inlet branch pipe, fully contacting with the outer wall of the nut, and the treated gas is delivered to the bottom cover through the bottom air inlet. The treated gas in the bottom cover is discharged through the hollow rod and the air outlet hole, fully contacting with the inner wall of the nut, so that the nut is evenly contacted with the treated gas;

[0014] The processing gas circulates in the carburizing furnace body, which can improve the diffusion efficiency of the processing gas and improve the carburizing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0016] Figure 2 for Figure 1 Sectional view along line AA;

[0017] In the figure, 1. carburizing furnace body; 2. furnace cover; 3. side air inlet ring pipe; 4. main air inlet pipe; 5. side air inlet branch pipe; 6. main exhaust pipe; 7. bottom air inlet; 8. material placement assembly; 9. bottom cover; 10. hollow rod; 11. steel wool; 12. air outlet; 13. nut; 14. exhaust device; 15. first three-way solenoid valve; 16. second three-way solenoid valve; 17. first branch exhaust pipe; 18. second branch exhaust pipe; 19. original air inlet pipe; 20. lifting ear; 21. lifting rod; 22. lifting ring. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0019] See also Figure 1 and Figure 2 The embodiment of the present application provides a nut carburizing treatment device, including a carburizing furnace body 1 and a furnace cover 2 for covering the top of the carburizing furnace body 1. The periphery of the carburizing furnace body 1 is provided with a plurality of side air intake ring pipes 3 from top to bottom, and each side air intake ring pipe 3 is connected through a main air intake pipe 4. A plurality of evenly distributed side air intake branch pipes 5 are installed on the side air intake ring pipe 3, and the side air intake branch pipes 5 are connected to the side wall of the carburizing furnace body 1; a main exhaust pipe 6 is installed on the carburizing furnace body 1, and a main exhaust pipe 6 is installed at the bottom of the carburizing furnace body 1. 4 is connected to the bottom air inlet 7; it also includes a material placement component 8, the material placement component 8 includes a bottom cover 9, a hollow rod 10 and steel wool 11, the bottom of the bottom cover 9 is an open structure, the bottom cover 9 is used to cover the bottom air inlet 7, the hollow rod 10 is fixedly installed on the bottom cover 9 and is connected to the bottom cover 9, the hollow rod 10 is provided with a plurality of air outlet holes 12, the hollow rod 10 is used to insert the steel wool 11 and the nut 13, the center of the steel wool 11 is provided with an opening for the hollow rod 10 to pass through, and the steel wool 11 and the nut 13 are alternately distributed on the hollow rod 10.

[0020] In order to facilitate the exhaust of air in the carburizing furnace body 1 and promote the diffusion efficiency of the processing gas in the carburizing furnace body 1, an exhaust device 14, a first three-way solenoid valve 15, a second three-way solenoid valve 16, a first branch exhaust pipe 17, a second branch exhaust pipe 18, and a raw gas intake pipe 19 are also provided;

[0021] The exhaust device 14 is installed on the main exhaust pipe 6, and the exhaust device 14 can be an exhaust pump or a vacuum pump, which can extract the gas in the carburizing furnace body 1;

[0022] Among them, one end of the main exhaust pipe 6 is connected to the carburizing furnace body 1, and the other end of the main exhaust pipe 6 is connected to the input end of the first three-way solenoid valve 15. The two output ends of the first three-way solenoid valve 15 are respectively connected to the first branch exhaust pipe 17 and the second branch exhaust pipe 18. The other end of the second branch exhaust pipe 18 is connected to one of the input ends of the second three-way solenoid valve 16. The other input end of the second three-way solenoid valve 16 is connected to the original gas intake pipe 19, and the output end of the second three-way solenoid valve 16 is connected to the main intake pipe 4. The original gas intake pipe 19 is connected to the processing gas storage container, and the processing gas for carburizing can be transported to the main intake pipe 4 through the original gas intake pipe 19; by arranging the exhaust device 14, the first three-way solenoid valve 15, the second three-way solenoid valve 16, the first branch exhaust pipe 17, the second branch exhaust pipe 18, and the original gas intake pipe 419, both the exhaust and supply of gas in the carburizing furnace body 1 can be realized, and the circulation of gas in the carburizing furnace body 1 can be realized, thereby improving the diffusion efficiency of the processing gas and the carburizing efficiency.

[0023] In order to facilitate the carburizing treatment of the nuts 13 in batches, a plurality of hollow rods 10 are provided, and the hollow rods 10 are distributed on the bottom cover 9 in a circular shape.

[0024] In order to facilitate the placement of the material assembly 8 in or out of the carburizing furnace body 1, a suspension rod 21 is fixed at the center of the bottom cover 9, and a suspension ring 22 is fixed at the upper end of the suspension rod 21. The suspension ring 22 is connected to the hook of the external lifting equipment, and the material assembly 8 can be lifted and moved as a whole.

[0025] In order to facilitate the movement of the furnace cover 2, a lifting lug 20 is fixed on the top of the furnace cover 2. The lifting lug 20 is connected to the hook of an external lifting device, and the furnace cover 2 can be lifted and moved, so that the furnace cover 2 is away from the carburizing furnace body 1, so that the top of the carburizing furnace body 1 is opened, so that the material placement assembly 8 is placed in or removed from the carburizing furnace body 1; or the furnace cover 2 is brought close to and covers the carburizing furnace body 1 to facilitate the carburizing process.

[0026] How this implementation works:

[0027] First, before the material placing assembly 8 enters the carburizing furnace body 1, the nut 13 and the steel wool 11 are mounted on the hollow rod 10, ensuring that a steel wool 11 is placed at the bottom of each nut 13, and the nuts 13 are separated by the steel wool 11. The multi-space characteristics of the steel wool 11 can be used to support the nuts 13 and facilitate gas flow, thereby avoiding the situation where the contact surface of the nut 13 cannot fully contact with the process gas;

[0028] Subsequently, the furnace cover 2 can be lifted and moved by connecting the lifting lug 20 with the hook of the external lifting equipment, so that the furnace cover 2 is away from the carburizing furnace body 1, thereby opening the top of the carburizing furnace body 1, and then the material placement assembly 8 is placed in the carburizing furnace body 1 through the hook of the external lifting equipment. The material placement assembly 8 is located at the approximate center of the carburizing furnace body 1. After the bottom cover 9 contacts the inner wall of the bottom end of the carburizing furnace body 1, the bottom cover 9 covers the bottom air inlet 7, and the bottom air inlet 7 is connected to the bottom cover 9 and the hollow rod 10;

[0029] Subsequently, the furnace cover 2 is lifted and moved to cover the carburizing furnace body 1; the air in the carburizing furnace body 1 is extracted through the exhaust device 14, and then the treatment gas for carburizing is transported to the main air intake pipe 4 through the original air intake pipe 19, and the main air intake pipe 4 transports the treatment gas to the side air intake ring pipe 3 and the bottom air intake port 7, and the side air intake ring pipe 3 transports the treatment gas evenly to the carburizing furnace body 1 through the side air intake branch pipe 5, and fully contacts the outer wall of the nut 13, and the bottom air intake port 7 transports the treatment gas to the bottom cover 9, and the treatment gas in the bottom cover 9 is discharged through the hollow rod 10 and the air outlet 12, and fully contacts the inner wall of the nut 13;

[0030] The carburizing furnace body 1 starts to heat up, so that the temperature inside the carburizing furnace body 1 rises to a preset carburizing temperature, so as to facilitate carburizing of the nut 13;

[0031] The first three-way solenoid valve 15 and the second three-way solenoid valve 16 switch the passage, so that the first branch exhaust pipe 17 is disconnected from the main exhaust pipe, the original gas intake pipe 19 is disconnected from the main intake pipe 4, the second branch exhaust pipe 18 is connected to the main exhaust pipe and the main intake pipe 4, and the exhaust device 14 extracts the gas in the carburizing furnace body 1, so that the gas circulates in the main exhaust pipe, the second branch exhaust pipe 18, the main intake pipe 4 and the carburizing furnace body 1, thereby improving the diffusion efficiency of the treated gas and improving the carburizing efficiency.

[0032] It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these are all within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A nut carburizing treatment device, comprising a carburizing furnace body (1) and a furnace cover (2) for covering the top of the carburizing furnace body (1), characterized in that: The carburizing furnace body (1) is provided with a plurality of side air intake ring pipes (3) from top to bottom on the periphery thereof, the side air intake ring pipes (3) are connected via a main air intake pipe (4), a plurality of evenly distributed side air intake branch pipes (5) are installed on the side air intake ring pipes (3), and the side air intake branch pipes (5) are connected to the side wall of the carburizing furnace body (1); a main exhaust pipe (6) is installed on the carburizing furnace body (1), and a bottom air intake port (7) connected to the main air intake pipe (4) is provided at the bottom of the carburizing furnace body (1); and a material placing assembly ( 8), the material placement assembly (8) comprises a bottom cover (9), a hollow rod (10) and steel wool (11), the bottom of the bottom cover (9) is an open structure, the bottom cover (9) is used to cover the bottom air inlet (7), the hollow rod (10) is fixedly mounted on the bottom cover (9) and is in communication with the bottom cover (9), a plurality of air outlet holes (12) are provided on the hollow rod (10), the hollow rod (10) is used to insert the steel wool (11) and the nut (13), and the steel wool (11) and the nut (13) are alternately distributed on the hollow rod (10).

2. The nut carburizing treatment device according to claim 1, characterized in that: It also includes an exhaust device (14), which is installed on the main exhaust pipe (6).

3. The nut carburizing treatment device according to claim 2, characterized in that: It also includes a first three-way solenoid valve (15), a second three-way solenoid valve (16), a first branch exhaust pipe (17), a second branch exhaust pipe (18), and a raw gas intake pipe (19); one end of the main exhaust pipe (6) is connected to the carburizing furnace body (1); the other end of the main exhaust pipe (6) is connected to the input end of the first three-way solenoid valve (15); the two output ends of the first three-way solenoid valve (15) are respectively connected to the first branch exhaust pipe (17) and the second branch exhaust pipe (18); the other end of the second branch exhaust pipe (18) is connected to one of the input ends of the second three-way solenoid valve (16); the other input end of the second three-way solenoid valve (16) is connected to the raw gas intake pipe (19); and the output end of the second three-way solenoid valve (16) is connected to the main intake pipe (4).

4. The nut carburizing treatment device according to claim 1, characterized in that: A plurality of hollow rods (10) are provided, and the hollow rods (10) are distributed in a circular pattern on the bottom cover (9).

5. The nut carburizing treatment device according to claim 1, characterized in that: A suspension rod (21) is fixed at the center of the bottom cover (9), and a suspension ring (22) is fixed at the upper end of the suspension rod (21).

6. The nut carburizing treatment device according to claim 1, characterized in that: A lifting lug (20) is fixed to the top of the furnace cover (2).

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