Sealing mechanism and tubular heat treatment furnace

Abstract

The utility model provides a sealing mechanism and a tubular heat treatment furnace, and belongs to the technical field of heat treatment furnaces. The sealing mechanism comprises a heat treatment furnace body and a sealing structure, the heat treatment furnace body comprises a heat treatment furnace main body, a furnace door and a fixing assembly, the furnace door is rotationally connected with the heat treatment furnace main body, the fixing assembly is arranged on one side of the heat treatment furnace main body, and the fixing assembly is connected with the furnace door in a clamped mode. The sealing structure comprises a sealing assembly, a rotating ring, a two-way lead screw, two lead screw nut pairs and a limiting plate, the sealing assembly is arranged in the furnace door, the two-way lead screw is rotationally connected with the furnace door, the rotating ring is connected with the two-way lead screw, and the two lead screw nut pairs are connected with the two-way lead screw. According to the sealing mechanism and the tubular heat treatment furnace, the sealing assembly is convenient to disassemble, assemble and replace, and the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of heat treatment furnaces. Specifically, it relates to a sealing mechanism and a tube-type heat treatment furnace. Background Art

[0002] A heat treatment furnace refers to an electric furnace or a fuel furnace used for heating furnace charges for heat treatment. Commonly used heat treatment furnaces include box-type resistance furnaces, pit-type resistance furnaces, gas carburizing furnaces, tube-type heat treatment furnaces, and salt bath furnaces, etc. Continuously operating furnaces are usually used. Workpieces are continuously loaded through the charging door, pass through the furnace chamber, and are continuously unloaded through the discharging door. Generally, the common conveying method inside the furnace is to place the workpieces on heat-resistant steel guide rails and transfer them by a stepping moving beam or a pusher.

[0003] When a heat treatment furnace is operating, it must ensure the sealing performance of its furnace door. If the sealing performance fails to meet the requirements, it will cause heat loss inside the furnace, lengthen the heat treatment cycle, increase energy consumption, and the heating temperature inside the furnace chamber is uneven, resulting in the metal finished products not meeting the process requirements. However, the current furnace door sealing device has a poor sealing effect, a complex device structure, and a cumbersome sealing operation.

[0004] Regarding this, Chinese Patent Application No. CN202021200280.8 discloses a heat treatment furnace door sealing device, including a sealing base and a heat treatment furnace. By setting a heat insulation sealing plate outside the furnace door and arranging a clamping structure, and arranging sealing strips inside the clamping structure, the sealing performance of the furnace door is improved, and all four sides where the furnace door is connected to the hot furnace are covered, with a better sealing effect, thereby reducing energy consumption and improving the efficiency and quality of producing metal finished products. By setting two sealing side plates sliding on the sealing base and controlling the driving of the sealing side plates to move through a servo motor, the two sides of the sealing door are tightly closed, and then cooperating with the sealing top plate on the upper side to achieve the purpose of sealing, and the structure of the whole device is simple and the operation process is fast.

[0005] There are still the following deficiencies in the use of the above solution: during use, since both the heat insulation sealing plate and the sealing strips are fixedly installed, when the sealing strips are used for a long time, they are easily worn, affecting the sealing effect, and it is time-consuming and laborious when disassembly and assembly are required, thereby reducing the work efficiency and the practicality of the device. Summary of the Utility Model

[0006] In order to make up for the above deficiencies, this application provides a sealing mechanism and a tube-type heat treatment furnace, aiming to improve the problem that both the heat insulation sealing plate and the sealing strips are fixedly installed, when the sealing strips are used for a long time, they are easily worn, affecting the sealing effect, and it is time-consuming and laborious when disassembly and assembly are required, thereby reducing the work efficiency.

[0007] In a first aspect, an embodiment of the present application provides a sealing mechanism, including a heat treatment furnace body and a sealing structure. The heat treatment furnace body includes a heat treatment furnace main body, a furnace door, and a fixing component. The furnace door is rotatably connected to the heat treatment furnace main body. The fixing component is disposed on one side of the heat treatment furnace main body and is snap-connected to the furnace door. The sealing structure includes a sealing component, a rotating ring, a bidirectional lead screw, two lead screw nut pairs, and a limiting plate. The sealing component is disposed inside the furnace door. The bidirectional lead screw is rotatably connected to the furnace door. The rotating ring is connected to the bidirectional lead screw. The two lead screw nut pairs are connected to the bidirectional lead screw. The limiting plate is connected to the lead screw nut pair, and the limiting plate is in contact with the sealing component.

[0008] In a specific implementation, the fixing component includes a fixing block, a sliding rod, a sliding block, and a spring. The fixing block is disposed on one side of the heat treatment furnace main body. The sliding rod is slidably connected to the fixing block. The sliding rod is snap-connected to the furnace door. The sliding block is connected to the sliding rod and is slidably connected to the fixing block. The spring is sleeved on the sliding rod.

[0009] In the above implementation process, through the arrangement of the fixing block, the sliding rod, the sliding block, and the spring, it is possible to conveniently fix the furnace door.

[0010] In a specific implementation, a pulling block is provided at one end of the sliding rod.

[0011] In the above implementation process, by providing a pulling block at one end of the sliding rod, it is convenient for the user to pull the sliding rod, saving time and effort.

[0012] In a specific implementation, the sealing component includes a first sealing ring, an installation frame, and a second sealing ring. The first sealing ring is provided on one side of the installation frame, and the second sealing ring is provided on the other side of the installation frame. The limiting plate is in contact with the installation frame, and the second sealing ring is in contact with the heat treatment furnace main body.

[0013] In the above implementation process, through the arrangement of the first sealing ring, the installation frame, and the second sealing ring, it is possible to facilitate sealing and reduce energy consumption.

[0014] In a specific implementation, a limiting groove is provided on one side of the furnace door, and the lead screw nut pair is slidably connected to the limiting groove.

[0015] In the above implementation process, by the sliding connection between the lead screw nut pair and the limiting groove, it is possible to conveniently limit the movement of the lead screw nut pair.

[0016] In a specific implementation, a plurality of grooves are evenly formed on the outer ring of the rotating ring.

[0017] In the above implementation process, by evenly arranging a number of grooves on the outer ring of the rotating ring, it is convenient to increase friction and facilitate the user to rotate the rotating ring.

[0018] In a specific implementation, a rubber pad is provided on one side of the furnace door.

[0019] In the above implementation process, by providing a rubber pad on one side of the furnace door, it is convenient to buffer and avoid the furnace door hitting the main body of the heat treatment furnace during the process of opening the door, thus prolonging the service life of the furnace door.

[0020] In a second aspect, the present utility model further provides a tubular heat treatment furnace, including the above sealing mechanism.

[0021] Compared with the prior art, the beneficial effects of the present application are as follows: through the setting of the fixing component, it is convenient to fix the furnace door; through the setting of the sealing component, it is convenient to seal and reduce energy consumption; by rotating the rotating ring to drive the rotation of the bidirectional lead screw, the two lead screw nut pairs and the limiting plate approach or separate from each other, which is convenient for disassembling, installing and replacing the sealing component, thus improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 FIG. 1 is a schematic structural diagram of a sealing mechanism and a tubular heat treatment furnace provided by an embodiment of the present application;

[0024] Figure 2 FIG. 2 is a front view structural diagram of a sealing mechanism and a tubular heat treatment furnace provided by an embodiment of the present application;

[0025] Figure 3 FIG. 3 is a sectional structural diagram of a fixing component provided by an embodiment of the present application;

[0026] Figure 4 FIG. 4 is a sectional structural diagram of a sealing component provided by an embodiment of the present application.

[0027] In the figure: 10 - heat treatment furnace body; 110 - heat treatment furnace main body; 120 - furnace door; 130 - fixing component; 131 - fixing block; 132 - sliding rod; 133 - slider; 134 - spring; 140 - limiting groove; 150 - rubber pad; 20 - sealing structure; 210 - sealing component; 211 - first sealing ring; 212 - mounting frame; 213 - second sealing ring; 220 - rotating ring; 230 - bidirectional lead screw; 240 - lead screw nut pair; 250 - limiting plate. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0029] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0030] Embodiment

[0031] Please refer to Figure 1 , the present application provides a sealing mechanism, including a heat treatment furnace body 10 and a sealing structure 20.

[0032] Specifically, the heat treatment furnace body 10 facilitates the fixation of the furnace door 120, and the sealing structure 20 facilitates the disassembly and replacement of the sealing component 210, improving the work efficiency.

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the heat treatment furnace body 10 includes a heat treatment furnace main body 110, a furnace door 120 and a fixing component 130. The furnace door 120 is rotatably connected to the heat treatment furnace main body 110. The fixing component 130 is disposed on one side of the heat treatment furnace main body 110, and the fixing component 130 is clamped with the furnace door 120.

[0034] In specific settings, the fixing component 130 includes a fixing block 131, a sliding rod 132, a sliding block 133 and a spring 134. The fixing block 131 is arranged on one side of the heat treatment furnace main body 110. The sliding rod 132 is slidably connected to the fixing block 131. The sliding rod 132 is clamped with the furnace door 120. The sliding block 133 is connected to the sliding rod 132. The sliding block 133 is slidably connected to the fixing block 131. The spring 134 is sleeved on the sliding rod 132. Among them, through the settings of the fixing block 131, the sliding rod 132, the sliding block 133 and the spring 134, it is convenient to fix the furnace door 120.

[0035] In specific settings, a pulling block is arranged at one end of the sliding rod 132. Among them, by arranging a pulling block at one end of the sliding rod 132, it is convenient for the user to pull the sliding rod 132, saving time and effort.

[0036] In specific settings, a rubber pad 150 is arranged on one side of the furnace door 120. Among them, by arranging a rubber pad 150 on one side of the furnace door 120, it is convenient for buffering, avoiding the furnace door 120 hitting the heat treatment furnace main body 110 during the process of opening the door, and extending the service life of the furnace door 120.

[0037] Please refer to Figure 1 and Figure 4 , the sealing structure 20 includes a sealing component 210, a rotating ring 220, a bidirectional lead screw 230, two lead screw nut pairs 240 and a limiting plate 250. The sealing component 210 is arranged in the furnace door 120. The bidirectional lead screw 230 is rotatably connected to the furnace door 120. The rotating ring 220 is connected to the bidirectional lead screw 230. The two lead screw nut pairs 240 are connected to the bidirectional lead screw 230. The limiting plate 250 is connected to the lead screw nut pair 240. The limiting plate 250 is attached to the sealing component 210.

[0038] In specific settings, the sealing component 210 includes a first sealing ring 211, a mounting frame 212 and a second sealing ring 213. The first sealing ring 211 is arranged on one side of the mounting frame 212, and the second sealing ring 213 is arranged on the other side of the mounting frame 212. The limiting plate 250 is attached to the mounting frame 212. The second sealing ring 213 is attached to the heat treatment furnace main body 110. Among them, through the settings of the first sealing ring 211, the mounting frame 212 and the second sealing ring 213, it is convenient for sealing and reduces energy consumption.

[0039] In specific settings, a limiting groove 140 is formed on one side of the furnace door 120. The lead screw nut pair 240 is slidably connected to the limiting groove 140. Among them, by the sliding connection of the lead screw nut pair 240 and the limiting groove 140, it is convenient to limit the movement of the lead screw nut pair 240.

[0040] When specifically setting, a number of grooves are evenly formed on the outer ring of the swivel ring 220. Among them, by evenly forming a number of grooves on the outer ring of the swivel ring 220, it is convenient to increase friction and facilitate the user to rotate the swivel ring 220.

[0041] The present utility model further provides a tubular heat treatment furnace, including the above-mentioned sealing mechanism.

[0042] The working principle of the sealing mechanism and the tubular heat treatment furnace: When using the sealing mechanism and the tubular heat treatment furnace, by pulling the sliding rod 132 to drive the slider 133 to move and extrude the spring 134, the clamping connection between the sliding rod 132 and the furnace door 120 is released, facilitating the opening and closing of the furnace door 120. Through the arrangement of the first sealing ring 211, the mounting frame 212 and the second sealing ring 213, it is convenient to seal and reduce energy consumption. By rotating the swivel ring 220 to drive the bidirectional lead screw 230 to rotate, the two lead screw nut pairs 240 and the limiting plate 250 move closer to or away from each other, facilitating the disassembly and replacement of the sealing component 210 and improving the working efficiency.

[0043] It should be noted that the specific model and specification of the heat treatment furnace body 110 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in the field, so it will not be elaborated in detail here.

[0044] The power supply of the heat treatment furnace body 110 and its principle are clear to those skilled in the art, and will not be described in detail here.

[0045] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A sealing mechanism, characterized in that, including A heat treatment furnace body (10), the heat treatment furnace body (10) includes a heat treatment furnace main body (110), a furnace door (120) and a fixing component (130), the furnace door (120) is rotatably connected to the heat treatment furnace main body (110), the fixing component (130) is arranged on one side of the heat treatment furnace main body (110), and the fixing component (130) is clamped with the furnace door (120); A sealing structure (20), the sealing structure (20) includes a sealing component (210), a rotating ring (220), a bidirectional lead screw (230), two lead screw nut pairs (240) and a limiting plate (250), the sealing component (210) is arranged in the furnace door (120), the bidirectional lead screw (230) is rotatably connected to the furnace door (120), the rotating ring (220) is connected to the bidirectional lead screw (230), two of the lead screw nut pairs (240) are connected to the bidirectional lead screw (230), the limiting plate (250) is connected to the lead screw nut pair (240), and the limiting plate (250) is attached to the sealing component (210).

2. The sealing mechanism according to claim 1, characterized in that, The fixing component (130) includes a fixing block (131), a sliding rod (132), a sliding block (133) and a spring (134), the fixing block (131) is arranged on one side of the heat treatment furnace main body (110), the sliding rod (132) is slidably connected to the fixing block (131), the sliding rod (132) is clamped with the furnace door (120), the sliding block (133) is connected to the sliding rod (132), the sliding block (133) is slidably connected to the fixing block (131), and the spring (134) is sleeved on the sliding rod (132).

3. The sealing mechanism according to claim 2, characterized in that, A pulling block is arranged at one end of the sliding rod (132).

4. A sealing mechanism according to claim 1, characterized in that, The sealing component (210) includes a first sealing ring (211), a mounting frame (212) and a second sealing ring (213), the first sealing ring (211) is arranged on one side of the mounting frame (212), and the second sealing ring (213) is arranged on the other side of the mounting frame (212), the limiting plate (250) is attached to the mounting frame (212), and the second sealing ring (213) is attached to the heat treatment furnace main body (110).

5. A sealing mechanism according to claim 1, wherein, A limiting groove (140) is formed on one side of the furnace door (120), and the lead screw nut pair (240) is slidably connected to the limiting groove (140).

6. A sealing mechanism according to claim 1, characterized in that, A plurality of grooves are evenly formed on the outer ring of the rotating ring (220).

7. A sealing mechanism according to claim 1, characterized in that A rubber pad (150) is arranged on one side of the furnace door (120).

8. Tube-type heat treatment furnace, characterized in that, including The sealing mechanism according to any one of claims 1-7.

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