An eccentric circle sealing locking device for a nitriding heat treatment furnace
By designing an eccentric circle sealing locking device in a nitriding heat treatment furnace, and using the combination of a rotary extrusion mechanism and an anti-reverse part, the problem of air leakage in the furnace cover in the prior art is solved, and a better sealing effect and nitriding quality are achieved.
Patent Information
- Application Number
- CN202421389381.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The furnace cover application device of the existing nitriding heat treatment furnace can easily cause air leakage in the furnace cover, affecting the insulation and nitriding effects.
An eccentric circle sealing device for a nitriding heat treatment furnace is designed, using a rotary extrusion mechanism and an anti-reversal member. By cooperating with the extrusion member of the eccentric circle structure and an anti-reversal member, the progressive sealing pressure on the furnace cover is achieved to prevent the reversal action.
It effectively prevents air leakage in the furnace cover, ensures a good sealing environment for the nitriding heat treatment furnace, and improves the nitriding quality.
Smart Images
Figure CN222700359U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a locking device, in particular to an eccentric circle sealing locking device of a nitriding heat treatment furnace. Background Art
[0002] Nitriding heat treatment is a crucial process that is widely used to strengthen and improve the performance of metal materials.
[0003] The equipment used for nitriding heat treatment is usually a nitriding heat treatment furnace. A nitriding heat treatment furnace is a device that uses nitrogen for heat treatment. It is a heat treatment device that puts the object into a vacuum chamber and decomposes the nitrogen by heating to generate nitrides. Specifically, the material is placed in a vacuum solid container, and then heated to a certain temperature by electron beam or induction heating. At the same time, nitrogen is injected for pressurization to form a nitrogen atmosphere, so that a certain chemical reaction occurs on the surface of the material, thereby achieving the purpose of improving hardness, wear resistance and corrosion resistance.
[0004] It can be seen that the sealing performance of the nitriding furnace has a direct and critical impact on the successful implementation of the process and product quality.
[0005] However, the existing nitriding furnace has a force-applying device for the furnace cover: the two ends of the bow-shaped rod are engaged with the furnace body, and a screw is passed through the middle of the bow-shaped rod. When the screw is turned, the screw applies downward pressure to the top of the furnace cover. When the screw is not installed directly at the center of the top of the furnace cover, it is easy to cause air leakage from the furnace cover, affecting heat preservation, making it difficult to reach the required temperature, and affecting the nitriding effect. Utility Model Content
[0006] The utility model aims to provide an eccentric circle sealing and locking device for a nitriding heat treatment furnace in view of the defects of the prior art.
[0007] In order to achieve the above-mentioned purpose of the utility model, the following technical solutions are adopted:
[0008] An eccentric circle sealing locking device for a nitriding heat treatment furnace comprises a rotary extrusion mechanism, which comprises a support, a driving end, a lock seat and an extrusion piece, wherein the driving end is connected to one side of the lock seat, and the other side of the lock seat is installed on the support and is transmission-connected to the extrusion piece; and an anti-reversal piece, wherein the anti-reversal piece is installed on the support corresponding to the lock seat, and is movably engaged with the lock seat, and blocks the lock seat from rotating in the opposite direction; wherein the driving end drives the lock seat, and while the lock seat drives the extrusion piece to rotate eccentrically, the anti-reversal piece blocks the lock seat and the extrusion piece from rotating in the opposite direction.
[0009] Furthermore, the extrusion piece is an eccentric circular structure.
[0010] Furthermore, the utility model provides an eccentric circle sealing locking device for a nitriding heat treatment furnace, which also includes a driving shaft, one end of which is connected to a lock seat, and the other end of which is provided with a support and is drivingly connected to an extrusion member.
[0011] Furthermore, a bayonet is provided on the support.
[0012] Furthermore, the lock seat is a ratchet structure.
[0013] Furthermore, the anti-reversal component includes a guide sleeve, which is installed on the support; a support rod, one end of which is movably engaged with the lock seat and the other end passes through the guide sleeve; and a limit rod, which is installed on the support rod close to the guide sleeve.
[0014] Furthermore, the utility model provides an eccentric circle sealing locking device for a nitriding heat treatment furnace, and further includes an anti-reversal rod. The support rod is provided with an anti-reversal rod, and the anti-reversal rod is movably inserted into a lock seat.
[0015] Furthermore, an inverted slope is provided on one end of the anti-reversal rod that is inserted into the lock seat.
[0016] Furthermore, the extrusion part is made of nickel-based high-temperature alloy.
[0017] Furthermore, the eccentric circle sealing locking device of the nitriding heat treatment furnace of the utility model also includes a manual wrench or an electric wrench, and the manual wrench or the electric wrench is used to drive the driving end to rotate.
[0018] The present invention has significant improvements over the prior art:
[0019] 1. The utility model can realize eccentric rotation, and utilizes the extrusion piece to eccentrically rotate and extrude on the furnace cover. When the extrusion piece eccentrically rotates and extrude, it can generate a gradual sealing pressure on the furnace cover, so that the furnace cover is sealed and connected with the nitriding heat treatment furnace. When the extrusion piece squeezes the furnace cover to the sealing position, the anti-reversal piece always maintains a movable engagement connection with the lock seat, which can prevent the lock seat from reversing, and then prevent the extrusion piece from reversing. During the working process, it can ensure that the extrusion piece and the furnace cover are kept in a compressed state, so that the nitriding heat treatment furnace has a good sealing environment and improves the nitriding quality.
[0020] 2. The anti-reversal member of the utility model can maintain the movable engagement connection with the lock seat by its own gravity. A limit rod is installed on the support rod, which can not only limit the descending height of the support rod, but also prevent the support rod from being separated from the guide sleeve.
[0021] 3. In the anti-reversal member of the utility model, an inverted slope is provided on the anti-reversal rod, which can increase the contact area with the lock seat for reversal, improve the engagement surface between the lock seat and the reversal rod, and enhance the engagement stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0023] Figure 1 A structural schematic diagram of an eccentric circle sealing and locking device of a nitriding heat treatment furnace of the utility model;
[0024] Figure 2 It is a structural schematic diagram of an anti-reversal member installed on the rotary extrusion mechanism in the utility model;
[0025] Figure 3 This is a schematic diagram of the structure of the utility model for locking the furnace cover of a nitriding heat treatment furnace;
[0026] Names and serial numbers of components in the figure:
[0027] 1-furnace cover, 2-nitriding heat treatment furnace, 3-rotating extrusion mechanism, 31-driving end, 32-locking seat, 33-support, 34-driving shaft, 35-extrusion piece, 36-bayonet;
[0028] 4-anti-reversal member, 41-support rod, 42-guide sleeve, 43-anti-reversal rod, 431-inverted slope, 44-limit rod. DETAILED DESCRIPTION
[0029] In order to enable those skilled in the art to better understand the technical solution in the present application, the technical solution of the present utility model will be clearly and completely described below in conjunction with the drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present application.
[0030] Embodiment 1:
[0031] like Figure 1-2 As shown, this embodiment is an eccentric circle sealing locking device for a nitriding heat treatment furnace, comprising a rotary extrusion mechanism 3 and an anti-reversal member 4. The rotary extrusion mechanism 3 comprises a support 33, a driving end 31, a lock seat 32 and an extrusion member 35, wherein the driving end 31 is connected to one side of the lock seat 32, and the other side of the lock seat 32 is mounted on the support 33 and is in transmission connection with the extrusion member 35; the anti-reversal member 4 is mounted on the support 33 corresponding to the lock seat 32, and is movably engaged with the lock seat 32, and blocks the lock seat 32 from rotating in reverse; wherein, the driving end 31 drives the lock seat 32, and the lock seat 32 drives the extrusion member 35 to rotate eccentrically, while the anti-reversal member 4 blocks the lock seat 32 and the extrusion member 35 from rotating in reverse.
[0032] like Figure 3 As shown, a plurality of eccentric circle sealing and locking devices of the nitriding heat treatment furnace of the present invention are installed on the nitriding heat treatment furnace 2, and the plurality of eccentric circle sealing and locking devices of the nitriding heat treatment furnace of the present invention are used to lock the furnace cover 3 and seal it on the nitriding heat treatment furnace 2. The number of installations can be 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or 16, etc. An appropriate amount of eccentric circle sealing and locking devices of the nitriding heat treatment furnace of the present invention can be installed according to the size of the furnace cover. By realizing extrusion at multiple points, the furnace cover can be tightly connected to the furnace body.
[0033] It should be noted that the extrusion member 35 of the present invention rotates in an eccentric circle, and under the support of the support 33, the lock seat 32 is driven by the driving end 31, and the lock seat 32 drives the extrusion member 35 to rotate in an eccentric circle. When the extrusion member 35 is used to squeeze and fix the furnace cover 3, the extrusion member 35 rotates to contact the furnace cover, and continues to apply a force to make the extrusion member rotate, and in this process, the extrusion member can generate a progressive sealing pressure on the furnace cover.
[0034] It is understandable that the anti-reversal member 4 does not prevent the lock seat 32 from driving the extrusion member 35 to rotate and squeeze the furnace cover, but can prevent the lock seat from driving the extrusion member to rotate in the opposite direction. The extrusion member can always keep squeezing the furnace cover, so that the furnace cover and the furnace body are sealed and connected. The problem of the furnace cover being prone to air leakage in the prior art, which leads to ammonia leakage, is solved.
[0035] When the extrusion piece needs to be reversed, the anti-reversal piece can be separated from the lock seat, the engagement connection between the anti-reversal piece and the lock seat can be released, and the lock seat can be rotated in the right direction, and the lock seat drives the extrusion piece to rotate in the opposite direction.
[0036] Working mode of the utility model:
[0037] When in use, a plurality of eccentric circle sealing and locking devices of the nitriding heat treatment furnace of the utility model are installed at intervals along the circumference of the furnace opening of the nitriding heat treatment furnace.
[0038] Extrusion locking: The lock seat 32 is driven by the driving end 31, and the lock seat 32 drives the extrusion piece 35 to rotate eccentrically. When it rotates to contact the furnace cover 1, the force is continued to be applied to the driving end 31. When the sealing position is reached, the force applied to the driving end 31 is stopped, and the anti-reversal member 4 and the lock seat 32 remain in an active engagement state, and the lock seat 32 is blocked from reversing in real time, thereby preventing the extrusion piece 4 from reversing. The extrusion piece 4 is tightly attached to the furnace cover and effectively squeezes and fixes the furnace cover to the furnace mouth of the nitriding heat treatment furnace, so that the furnace cover is sealed and fixed to the furnace mouth of the nitriding heat treatment furnace under the action of multiple eccentric circle sealing and locking devices of the nitriding heat treatment furnace of the utility model.
[0039] In some embodiments of the present disclosure, a structure of an extrusion piece is provided. The extrusion piece 35 is an eccentric circular structure.
[0040] In some embodiments of the present disclosure, a transmission structure of a lock seat and an extrusion member is provided. A drive shaft 34 is additionally installed. Figure 1 As shown, one end of the driving shaft 34 is connected to the lock seat 32 , and the other end passes through the support 33 and is drivingly connected to the extrusion member 35 .
[0041] The driving shaft 34 is rotatably connected to the support 33 .
[0042] The driving end 31 drives the lock seat 32 , and the lock seat 32 drives the extrusion member 35 to rotate eccentrically via the driving shaft 34 .
[0043] It should be noted that if Figure 1 As shown, two supports 33 are installed, which can help provide sufficient support force for the drive shaft. A lock seat is installed on each support, and each lock seat is installed with a driving end. During installation, the extrusion piece is eccentrically connected to the drive shaft, and the drive shaft passes through the support and is connected to the lock seat in a transmission manner.
[0044] In some embodiments of the present disclosure, a structure of a support is provided. Figure 1 , 2 As shown, a bayonet 36 is provided on the support 33. The bayonet 36 allows a portion of the support 33 to span across the top of the furnace cover, reducing the distance between the extrusion and the furnace cover, so that the contact position between the extrusion and the furnace cover is relatively far away from the edge of the furnace cover, thereby improving the connection stability between the extrusion and the furnace cover.
[0045] In some embodiments of the present disclosure, a structure of a lock seat is provided. Figure 2 As shown, the lock seat is a ratchet structure. The ratchet structure is used in conjunction with an anti-reversal member, which can prevent the ratchet structure from reversing, thereby achieving rotation positioning of the ratchet structure.
[0046] It should be noted that when the optimal locking pressure is reached, a mark is recorded on the same ratchet to keep the pressure applied the same each time.
[0047] In some embodiments of the present disclosure, a structure of an anti-reversal member is provided. Figure 2 As shown, the anti-reversal member 4 includes a guide sleeve 42, a support rod 41 and a limit rod 44. The guide sleeve 42 is installed on the support 33. One end of the support rod 41 is movably engaged with the lock seat 32, and the other end passes through the guide sleeve 42. The limit rod 44 is installed on the support rod 41 near the guide sleeve 42.
[0048] like Figure 2 As shown, the anti-reversal member 4 is vertically mounted on the support 33, and the support rod 41 can move relative to the guide sleeve 42. Under the action of its own gravity, the support rod 41 maintains a movable engagement connection with the lock seat 32. The limit rod 44 can both limit the height of the support rod 41 falling and prevent the support rod 41 from escaping from the guide sleeve 42.
[0049] In some embodiments of the present disclosure, a snap-fit connection structure between the support rod and the lock seat is provided. An anti-reversal rod 43 is added. Figure 2 As shown, the support rod 41 is provided with an anti-reversal rod 43 , and the anti-reversal rod 43 is movably inserted into the lock seat 32 .
[0050] The anti-reversal rod 43 is movably engaged with the lock seat 32 , and under the action of the support rod, the anti-reversal rod 43 maintains a movably engaged connection with the lock seat, which can effectively prevent the lock seat from reversing.
[0051] In some embodiments of the present disclosure, a connection structure between an anti-reversal lever and a lock seat is provided, such as Figure 2 As shown, an end of the anti-reversal rod 43 inserted into the lock seat 32 is provided with an inverted inclined surface 431 .
[0052] When the lock seat reverses, the lock seat and the anti-reversal rod are connected by the inverted slope, which can increase the contact area and effectively prevent the lock seat from reversing. The extrusion contact connection between the extrusion part and the furnace cover can be improved.
[0053] In some embodiments of the present disclosure, a material structure is provided. The material of the extrusion 35 is a nickel-based high-temperature alloy. The nickel-based high-temperature alloy has the characteristics of high temperature resistance and high strength. When used in a high-load and high-temperature environment, the extrusion can be effectively prevented from being deformed or damaged. The problem of the existing furnace cover top pressure mechanism being easily deformed is overcome.
[0054] In some embodiments of the present disclosure, a form of a driving source is given.
[0055] One type of driving source may be a manual wrench. Another type of driving source may be an electric wrench. The manual wrench or the electric wrench is used to drive the driving end 31 to rotate.
[0056] The driving end 31 may be a hexagonal structure, which can be easily screwed by a manual wrench or an electric wrench.
[0057] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.
Claims
1. An eccentric circle sealing and locking device for a nitriding heat treatment furnace, characterized in that: include A rotary extrusion mechanism (3), the rotary extrusion mechanism (3) comprising a support (33), a driving end (31), a locking seat (32) and an extrusion member (35), the driving end (31) being connected to one side of the locking seat (32), the other side of the locking seat (32) being mounted on the support (33) and being transmission-connected to the extrusion member (35); and An anti-reversal component (4), the anti-reversal component (4) corresponding to the lock seat (32) is installed on the support (33), and is movably engaged with the lock seat (32) and blocks the lock seat (32) from rotating in the reverse direction; The driving end (31) drives the lock seat (32), and while the lock seat (32) drives the extrusion member (35) to rotate eccentrically, the anti-reversal member (4) blocks the lock seat (32) and the extrusion member (35) from rotating in the reverse direction.
2. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to claim 1, characterized in that: The extrusion piece (35) is an eccentric circular structure.
3. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to claim 1, characterized in that: It also includes a driving shaft (34), one end of which is connected to the lock seat (32), and the other end of which passes through a support (33) and is transmission-connected to an extrusion piece (35).
4. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to claim 1, characterized in that: The support (33) is provided with a bayonet (36).
5. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to claim 1, characterized in that: The lock seat is a ratchet structure.
6. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to any one of claims 1 to 5, characterized in that: The anti-reversal member (4) comprises A guide sleeve (42), wherein the guide sleeve (42) is mounted on the support (33); A support rod (41), one end of which is movably engaged with the lock seat (32) and the other end of which passes through the guide sleeve (42); and a limiting rod (44), which is installed on the support rod (41) close to the guide sleeve (42).
7. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to claim 6, characterized in that: It also includes an anti-reversal rod (43), the support rod (41) is provided with the anti-reversal rod (43), and the anti-reversal rod (43) is movably inserted into the lock seat (32).
8. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to claim 7, characterized in that: An end of the anti-reversal rod (43) inserted into the lock seat (32) is provided with an inverted inclined surface (431).
9. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to claim 8, characterized in that: The material of the extruded part (35) is a nickel-based high-temperature alloy.
10. The eccentric circle sealing and locking device for a nitriding heat treatment furnace according to claim 1, characterized in that: It also includes a manual wrench or an electric wrench, and the manual wrench or the electric wrench is used to drive the driving end (31) to rotate.