Carbonitriding furnace convenient for taking and placing materials

Abstract

A carbonitriding furnace convenient to take and place relates to the technical field of heat treatment process equipment and comprises a furnace box, a furnace cover and a workpiece body, the bottom of the inner side of the furnace box is rotationally connected with a turbine through a first rotating shaft, a gas inlet pipe is fixedly communicated with the position, corresponding to the turbine, of the furnace box, and the furnace cover is buckled to a box opening of the furnace box through a positioning mechanism. The bottom of the furnace cover is rotationally connected with a rotating disc through a second rotating shaft, hanging frames are arranged on the side face of the rotating disc at intervals, the workpiece bodies are bundled on the hanging frames through nylon ribbons, and the second rotating shaft is in transmission connection with the first rotating shaft through a connecting mechanism. The air inlet pipe is arranged at the position, close to the bottom, of the furnace box, so that blocking cannot be generated when materials are taken and placed, and workpiece bodies can be taken and placed conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment process equipment, in particular to a carbonitriding furnace which is convenient for taking and discharging materials. Background Art

[0002] Carbonitriding is a common heat treatment process. The principle of carbonitriding is to infiltrate carbon and nitrogen into the workpiece surface to strengthen the workpiece surface through phase change, thereby enhancing the workpiece surface strength, hardness, wear resistance and fatigue resistance.

[0003] In the prior art, a patent with authorization publication number CN 218115565 U discloses a carbonitriding furnace, in which an air guide tube and an air input pipe are both arranged above the furnace box. When taking and placing workpieces, they must pass through the upper opening of the furnace box, and the air input pipe needs to be connected to an external air supply device, which will produce a shielding effect, which is very inconvenient when taking and placing materials. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a carbonitriding furnace which is convenient for taking in and out materials. The air inlet pipe is arranged on the furnace box near the bottom, so it will not cause obstruction when taking in and out materials, thereby facilitating the taking in and placing of the workpiece body, and can effectively solve the problems in the background technology.

[0005] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0006] A carbonitriding furnace which is convenient for taking and unloading materials comprises a furnace box, a furnace cover and a workpiece body, wherein the inner bottom of the furnace box is rotatably connected to a turbine via a first rotating shaft, an air intake pipe is connected and fixed to a position corresponding to the turbine on the furnace box, the furnace cover is buckled at the box opening of the furnace box via a positioning mechanism, the bottom of the furnace cover is rotatably connected to a turntable via a second rotating shaft, hangers are provided at intervals on the sides of the turntable, the workpiece body is tied to the hanger via a nylon tie, and the second rotating shaft is transmission-connected to the first rotating shaft via a connecting mechanism.

[0007] Furthermore, the connection point between the air inlet pipe and the furnace box is arranged tangentially.

[0008] Furthermore, it also includes a lifting ring, which is fixed on the top of the furnace cover.

[0009] Furthermore, the positioning mechanism includes a positioning hole and a positioning rod, the positioning rod is fixed on an ear seat on the side of the furnace box, the positioning hole is opened on the ear seat on the side of the furnace cover, and the positioning rod is plugged into the positioning hole.

[0010] Furthermore, the connection mechanism includes a slot and a plug, the plug is fixed at the bottom of the turntable, the slot is opened at the top of the first rotating shaft, and the plug is plugged into the slot.

[0011] Furthermore, it also includes a through hole, which is opened at the end position of the hanger, and the nylon tie passes through the through hole and binds the workpiece body to the hanger.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the carbonitriding furnace which is convenient for loading and unloading materials has the following advantages:

[0013] 1. The carbonitriding gas enters the furnace box through the air inlet pipe. Since the connection between the air inlet pipe and the furnace box is tangentially arranged, the carbonitriding gas drives the turbine to rotate. The air inlet pipe is arranged near the bottom of the furnace box, so it will not be blocked when taking and placing materials, making it convenient to take and place the workpiece body.

[0014] 2. The external lifting equipment lifts the furnace cover through the lifting ring, so that the furnace cover rises from the box opening of the furnace box, making it easier to take and place the workpiece body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0018] In the figure: 1 furnace box, 2 first rotating shaft, 3 positioning mechanism, 31 positioning hole, 32 positioning rod, 4 connecting mechanism, 41 slot, 42 plug, 5 furnace cover, 6 lifting ring, 7 turntable, 8 second rotating shaft, 9 hanging rack, 10 through hole, 11 workpiece body, 12 nylon cable tie, 13 turbine, 14 intake pipe. DETAILED DESCRIPTION

[0019] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0020] See also Figure 1-3The present embodiment provides a technical solution: a carbonitriding furnace that is convenient for taking and unloading materials, comprising a furnace box 1, a furnace cover 5 and a workpiece body 11. The inner bottom of the furnace box 1 is rotatably connected to a turbine 13 through a first rotating shaft 2, and an air intake pipe 14 is connected and fixed to a position corresponding to the turbine 13 on the furnace box 1. The furnace cover 5 is buckled at the box opening of the furnace box 1 through a positioning mechanism 3, and the bottom of the furnace cover 5 is rotatably connected to a turntable 7 through a second rotating shaft 8. Hangers 9 are arranged at intervals on the sides of the turntable 7. The workpiece body 11 is tied to the hanger 9 through a nylon tie 12, and the second rotating shaft 8 is transmission-connected to the first rotating shaft 2 through a connecting mechanism 4.

[0021] The connecting part of the air inlet pipe 14 and the furnace box 1 is arranged tangentially, and the carbonitriding gas enters the furnace box 1 through the air inlet pipe 14. Since the connecting part of the air inlet pipe 14 and the furnace box 1 is arranged tangentially, the carbonitriding gas drives the turbine 13 to rotate. The air inlet pipe 14 is arranged near the bottom of the furnace box 1, so it will not cause obstruction when taking and placing materials, thereby facilitating the taking and placing of the workpiece body 11.

[0022] It also includes a lifting ring 6, which is fixed on the top of the furnace cover 5. The external lifting equipment lifts the furnace cover 5 through the lifting ring 6, so that the furnace cover 5 rises from the box opening position of the furnace box 1, so as to facilitate the taking and placing of the workpiece body 11.

[0023] The positioning mechanism 3 includes a positioning hole 31 and a positioning rod 32. The positioning rod 32 is fixed on the ear seat on the side of the furnace box 1. The positioning hole 31 is opened on the ear seat on the side of the furnace cover 5. The positioning rod 32 is plugged into the positioning hole 31. The positioning rod 32 on the furnace box 1 is plugged into the positioning hole 31 on the furnace cover 5, thereby connecting the furnace box 1 and the furnace cover 5.

[0024] The connecting mechanism 4 includes a slot 41 and a plug 42. The plug 42 is fixed at the bottom of the turntable 7. The slot 41 is opened at the top of the first rotating shaft 2. The plug 42 is plugged into the slot 41. The slot 41 on the first rotating shaft 2 is plugged into the plug 42 on the turntable 7. The turbine 13 drives the turntable 7 to rotate through the first rotating shaft 2. The turntable 7 rotates relative to the furnace cover 5 through the second rotating shaft 8. The turntable 7 drives the workpiece body 11 to rotate through the bracket 9, thereby promoting the uniform infiltration of carbon and nitrogen elements into the surface of the workpiece body 11.

[0025] It also includes a through hole 10, which is opened at the end position of the hanger 9. The nylon tie 12 passes through the through hole 10 and bundles the workpiece body 11 on the hanger 9, which is convenient for fixing and use.

[0026] The working principle of a carbonitriding furnace that is convenient for taking and unloading materials provided by the utility model is as follows: an external lifting device lifts the furnace cover 5 through a lifting ring 6, so that the furnace cover 5 rises from the box opening position of the furnace box 1, and then, the nylon tie 12 passes through the through hole 10 and bundles the workpiece body 11 on the hanger 9, and then, the furnace cover 5 is placed in its original position. At this time, the positioning rod 32 on the furnace box 1 is plugged into the positioning hole 31 on the furnace cover 5, and at the same time, the slot 41 on the first rotating shaft 2 is plugged into the plug 42 on the turntable 7, and the carbonitriding gas enters the furnace box 1 through the air inlet pipe 14. Since the connection between the air inlet pipe 14 and the furnace box 1 is tangentially arranged, the carbonitriding gas drives the turbine 13 to rotate, and the turbine 13 drives the turntable 7 to rotate through the first rotating shaft 2. The turntable 7 rotates relative to the furnace cover 5 through the second rotating shaft 8, and the turntable 7 drives the workpiece body 11 to rotate through the hanger 9, thereby prompting the surface of the workpiece body 11 to be evenly infiltrated with carbon and nitrogen elements.

[0027] It is worth noting that the components disclosed in the above embodiments are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. The intake pipe 14 has two groups, and the two groups of intake pipes 14 are an ammonia intake pipe and an ethanol intake pipe, respectively. The flow rate of ammonia delivered by the ammonia intake pipe is more than 0.7L / min, and the flow rate of ethanol delivered by the ethanol intake pipe is more than 0.1L / min.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and ways to implement the technical solution. The above is only a preferred implementation scheme of the present invention. However, technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, which are all within the scope of protection of the present invention.

Claims

1. A carbonitriding furnace that is convenient for loading and unloading materials, comprising a furnace box (1), a furnace cover (5) and a workpiece body (11), characterized in that: The inner bottom of the furnace box (1) is rotatably connected to a turbine (13) via a first rotating shaft (2); an air intake pipe (14) is connected and fixed to a position on the furnace box (1) corresponding to the turbine (13); the furnace cover (5) is buckled at the box opening of the furnace box (1) via a positioning mechanism (3); the bottom of the furnace cover (5) is rotatably connected to a turntable (7) via a second rotating shaft (8); a hanger (9) is provided at intervals on the side of the turntable (7); the workpiece body (11) is tied to the hanger (9) via a nylon tie (12); and the second rotating shaft (8) is transmission-connected to the first rotating shaft (2) via a connecting mechanism (4).

2. The carbonitriding furnace that is convenient for loading and unloading materials according to claim 1 is characterized in that: The connection point between the air inlet pipe (14) and the furnace box (1) is arranged tangentially.

3. The carbonitriding furnace that is convenient for loading and unloading materials according to claim 1 is characterized in that: It also includes a lifting ring (6), wherein the lifting ring (6) is fixed to the top of the furnace cover (5).

4. The carbonitriding furnace that is convenient for loading and unloading materials according to claim 1 is characterized in that: The positioning mechanism (3) comprises a positioning hole (31) and a positioning rod (32); the positioning rod (32) is fixed to an ear seat on the side of the furnace box (1); the positioning hole (31) is formed on the ear seat on the side of the furnace cover (5); and the positioning rod (32) is plugged into the positioning hole (31).

5. The carbonitriding furnace that is convenient for loading and unloading materials according to claim 1 is characterized in that: The connecting mechanism (4) comprises a slot (41) and a plug (42), wherein the plug (42) is fixed to the bottom of the rotating disk (7), and the slot (41) is provided at the top of the first rotating shaft (2), and the plug (42) is plugged into the slot (41).

6. The carbonitriding furnace that is convenient for loading and unloading materials according to claim 1, characterized in that: It also includes a through hole (10), wherein the through hole (10) is opened at the end position of the hanger (9), and the nylon tie (12) passes through the through hole (10) and binds the workpiece body (11) to the hanger (9).

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