Sealing structure of high-temperature box-type resistance furnace

Abstract

The utility model discloses a high temperature box type resistance furnace sealing structure, include: resistance furnace body, the resistance furnace body inside fixed mounting furnace lining, the front end outer wall of resistance furnace body is equipped with the furnace mouth, the front end outer wall of furnace mouth is connected through the hinge rotation sealing door, the inner wall fixed mounting door lining of sealing door, sealing assembly, including sealing end, sealing end fixed mounting is on the outer wall of furnace mouth, the first sealing ring of sealing end four -around inside fixed mounting, the junction of sealing end and door lining is fixedly connected through locking piece, relate resistance furnace sealing structure technical field, through adopting the structure of main sealing and auxiliary sealing cooperation, combine mechanical locking part, can effectively fill up the sealing gap, and block gas leakage, ensure sealing door in the furnace body working process not easy to loosen simultaneously, improve the overall sealing reliability significantly, guarantee the stable temperature in the furnace, reduce energy consumption loss.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing structure of resistance furnace, specifically a sealing structure for a high-temperature box-type resistance furnace. Background Technology

[0002] High-temperature box-type resistance furnaces are widely used in metal heat treatment, material sintering, and other fields. Their sealing performance directly affects heating quality and energy consumption. Most existing high-temperature box-type resistance furnaces use a single sealing ring for direct bonding, lacking positioning structures such as sealing ends and sealing grooves. The sealing ring is prone to displacement or uneven compression, leading to sealing failure, leakage of high-temperature gas inside the furnace, and entry of cold air from the outside, causing furnace temperature fluctuations and increasing energy consumption. Utility Model Content

[0003] The purpose of this utility model is to provide a sealing structure for a high-temperature box-type resistance furnace, so as to solve the problem mentioned in the background art that most of the existing sealing structures of high-temperature box-type resistance furnaces use a single sealing ring for direct bonding and sealing, lacking positioning structures such as sealing ends and sealing grooves, and the sealing ring is prone to displacement or uneven compression, resulting in sealing failure.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A sealing structure for a high-temperature box-type resistance furnace includes: The resistance furnace body has a furnace lining fixedly installed inside. The front outer wall of the resistance furnace body has a furnace opening. The front outer wall of the furnace opening is rotatably connected to a sealing door via a hinge. The inner wall of the sealing door is fixedly installed with a door lining. A sealing assembly includes a sealing end, which is fixedly installed on the outer wall of the furnace opening. A first sealing ring is fixedly installed inside the periphery of the sealing end, and the connection between the sealing end and the door liner is fixedly connected by a locking member. The auxiliary sealing assembly includes an elastic telescopic tube, the two ends of which are fixedly connected to the resistance furnace body and the outer wall of the sealing door, respectively, and the elastic telescopic tube is located on the outside of the door liner.

[0005] In a preferred embodiment of this utility model, the inner wall of the sealing end is provided with a sealing groove, the interior of the sealing groove is a T-shaped recessed groove structure, the inner wall of the sealing groove is fitted with a first sealing ring, and the outer wall of the door liner is provided with a protrusion that fits and is fitted with the sealing groove for sealing.

[0006] In a preferred embodiment of the present invention, the locking member includes a first locking plate and a second locking plate, the first locking plate and the second locking plate are arranged in pairs, and the first locking plate is welded to the outer wall of the sealing end.

[0007] In a preferred embodiment of this utility model, the second locking plate is welded to the outer wall of the door liner, the first locking plate and the second locking plate are in contact with each other when the sealed door is closed, and the inner wall of the first locking plate is rotatably connected to the locking screw via a rotating shaft.

[0008] In a preferred embodiment of this utility model, the inner wall of the second locking plate is provided with a U-shaped groove, the locking screw is engaged with the inner wall of the U-shaped groove, and the outer wall of the locking screw is threadedly connected to a handwheel locking block, which engages with the outer wall of the second locking plate for locking.

[0009] In a preferred embodiment of this utility model, anti-slip corner supports are fixedly installed at the four corners of the bottom of the resistance furnace body.

[0010] In a preferred embodiment of this utility model, a furnace opening flange is fixedly installed on the outer wall of the sealing end, a door flange is fixedly installed on the outer wall of the door liner, the elastic telescopic tube is made of stainless steel, and the outer walls of both ends of the elastic telescopic tube are provided with butt flanges.

[0011] In a preferred embodiment of this utility model, a second sealing ring is embedded and fixedly installed on the outer wall of the mating flange. The second sealing ring is sealed and connected with the furnace opening flange and the door flange. The mating flange is detachably fixedly connected to the furnace opening flange and the door flange by bolts.

[0012] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0013] 1. The structure of main seal and auxiliary seal working together, combined with mechanical locking components, can effectively fill the sealing gap, block gas leakage, and ensure that the sealing door is not easy to loosen during the operation of the furnace body, which significantly improves the overall sealing reliability, ensures the stability of the furnace temperature, and reduces energy consumption loss. 2. The design of each sealing and fixing component takes into account both high temperature resistance and disassembly, which not only adapts to high temperature working environment and extends the service life of the components, but also facilitates the maintenance or replacement of sealing components in the future. At the same time, the anti-slip design of the furnace body improves the safety of operation and is suitable for a variety of use scenarios. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the main structure of a sealing structure for a high-temperature box-type resistance furnace. Figure 2 This is a top view schematic diagram of a sealing structure for a high-temperature box-type resistance furnace. Figure 3 This is a schematic diagram of the internal structure of a high-temperature box-type resistance furnace in a sealing structure. Figure 4 This is a schematic diagram of the installation structure of the first sealing ring in a high-temperature box-type resistance furnace sealing structure. Figure 5 A schematic diagram of a locking component in a sealing structure of a high-temperature box-type resistance furnace; Figure 6 This is a schematic diagram of the auxiliary sealing component in the sealing structure of a high-temperature box-type resistance furnace.

[0015] In the figure: resistance furnace body 100, furnace lining 110, sealing door 140, door lining 141, sealing end 200, sealing groove 210, first sealing ring 220, protrusion 230, first locking plate 240, locking screw 241, handwheel locking block 242, second locking plate 243, U-shaped groove 244, furnace mouth flange 300, door flange 310, elastic telescopic tube 320, butt flange 321, second sealing ring 322. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] Example 1: As Figures 1-6 ,include: The resistance furnace body 100 has a furnace lining 110 fixedly installed inside it. The front outer wall of the resistance furnace body 100 has a furnace opening. The front outer wall of the furnace opening is rotatably connected to a sealing door 130 via a hinge. The inner wall of the sealing door 130 has a door lining 131 fixedly installed. The sealing assembly includes a sealing end 200, which is fixedly installed on the outer wall of the furnace opening. A first sealing ring 220 is fixedly installed inside the sealing end 200. The connection between the sealing end 200 and the door liner 131 is fixedly connected by a locking member. The auxiliary sealing assembly includes an elastic telescopic tube 320, with both ends of the elastic telescopic tube 320 fixedly connected to the outer wall of the resistance furnace body 100 and the sealing door 130, respectively. The elastic telescopic tube 320 is located on the outside of the door liner 131.

[0018] The specific application scenario of this embodiment is as follows: The resistance furnace body 100 serves as the overall load-bearing foundation. The furnace lining 110 fixed inside it can reduce the transfer of high temperature inside the furnace to the outside, thus playing a role in heat preservation and energy saving. When the resistance furnace needs to be used, the workpiece to be heated is placed inside the resistance furnace body 100. The sealing door 130 is rotated by the hinge so that the sealing door 130 covers the furnace opening at the front end of the resistance furnace body 100. At this time, the sealing end 200 fixed on the outer wall of the furnace opening fits against the door lining 131 on the inner wall of the sealing door 130. The first sealing ring 220 inside the sealing end 200 is squeezed, filling the gap between the sealing end 200 and the door lining 131, forming a main seal, blocking the leakage of high temperature gas inside the furnace and the entry of cold air from the outside. At the same time, the elastic telescopic tube 320 connected to the outer wall of the resistance furnace body 100 and the sealing door 130 retracts as the sealing door 130 closes. It is located outside the door lining 131 and can form a secondary seal, further enhancing the overall sealing effect.

[0019] Example 2: Figures 3-5 The inner wall of the sealing end 200 is provided with a sealing groove 210, the interior of which is a T-shaped recessed groove structure. The inner wall of the sealing groove 210 is fitted with a first sealing ring 220 for insertion and connection. The outer wall of the door liner 131 is provided with a protrusion 230 that fits and seals with the sealing groove 210. The locking component includes a first locking plate 240 and a second locking plate 243, which are arranged in pairs. The first locking plate 240 is welded to the outer wall of the sealing end 200, and the second locking plate 243 is welded to the outer wall of the door liner 131. The first locking plate 240 and the second locking plate 243 fit together when the sealing door 130 is closed. The inner wall of the first locking plate 240 is rotatably connected to the locking screw 241 through a rotating shaft. The inner wall of the second locking plate 243 is provided with a U-shaped groove 244. The locking screw 241 is inserted into the inner wall of the U-shaped groove 244. The outer wall of the locking screw 241 is threadedly connected to the handwheel locking block 242. The handwheel locking block 242 is locked in place with the outer wall of the second locking plate 243. Anti-slip brackets 120 are fixedly installed at the four corners of the bottom of the resistance furnace body 100.

[0020] The specific application scenario of this embodiment is as follows: The sealing groove 210 opened on the inner wall of the sealing end 200 is a T-shaped recessed groove structure. The first sealing ring 220 is inserted into the sealing groove 210 to prevent the first sealing ring 220 from shifting during use. When the sealing door 130 is closed, the protrusion 230 on the outer wall of the door liner 131 is inserted into the sealing groove 210 and makes close contact with the first sealing ring 220, improving the fit and reliability of the main seal. Subsequently, the locking screw 241 on the first locking plate 240 is rotated so that the locking screw 241 is engaged in the U-shaped slot 244 of the second locking plate 243. Then, the handwheel locking block 242 is turned until the handwheel locking block 242 is tightly attached to the outer wall of the second locking plate 243, thereby fixing the first locking plate 240 and the second locking plate 243, and thus firmly locking the sealing end 200 and the door liner 131 to prevent the sealing door 130 from loosening when the furnace is working. In addition, the anti-slip corner supports 120 at the four corners of the bottom of the resistance furnace body 100 can increase the friction between the furnace body and the ground, preventing the furnace body from sliding during operation or heating. The specific application scenario of this embodiment is: suitable for scenarios with high requirements for sealing stability, such as the sintering process of precision alloy materials, or in situations where the furnace body is placed in an environment with slight vibrations, requiring the furnace body to maintain a stable position.

[0021] Example 3: Figure 1 and Figure 6 A furnace opening flange 300 is fixedly installed on the outer wall of the sealing end 200, and a door flange 310 is fixedly installed on the outer wall of the door liner 131. The elastic expansion tube 320 is made of stainless steel, and the outer walls of both ends of the elastic expansion tube 320 are provided with mating flanges 321. A second sealing ring 322 is embedded and fixedly installed on the outer wall of the mating flange 321. The second sealing ring 322 is sealed and connected with the furnace opening flange 300 and the door flange 310. The mating flange 321 is detachably fixedly connected to the furnace opening flange 300 and the door flange 310 by bolts.

[0022] The specific application scenario of this embodiment is as follows: the furnace opening flange 300 on the outer wall of the sealing end 200 and the door flange 310 on the outer wall of the door liner 131 provide an installation reference for the elastic telescopic tube 320. The elastic telescopic tube 320 is made of stainless steel and has good high temperature resistance and deformation resistance. The mating flanges 321 at both ends are connected to the furnace opening flange 300 and the door flange 310 respectively by bolts, realizing the detachable fixation of the elastic telescopic tube 320. The second sealing ring 322 on the outer wall of the mating flange 321 is squeezed during the bolt tightening process, filling the gap between the mating flange 321 and the furnace opening flange 300 and the door flange 310, enhancing the auxiliary sealing effect of the elastic telescopic tube 320. When it is necessary to maintain or replace the elastic telescopic tube 320, the elastic telescopic tube 320 can be removed by unscrewing the bolts, which is convenient. The specific application scenario of this embodiment is: suitable for scenarios with high frequency of high temperature use and regular maintenance of sealing components, such as the frequent high temperature performance testing of materials in the laboratory, or the long service life requirement of sealing components in industrial production and the need for convenient replacement.

[0023] The working principle of this utility model is as follows: When used by those skilled in the art, the resistance furnace body 100 is the core load-bearing structure, the internal furnace lining 110 provides heat preservation, and the bottom anti-slip support 120 ensures the stability of the furnace body. During use, after placing the workpiece into the resistance furnace body 100, the sealing door 130 is rotated via a hinge to close the furnace opening. The door lining 131 fits against the sealing end 200 on the outer wall of the furnace opening. The first sealing ring 220 inside the sealing end 200, in conjunction with the T-shaped sealing groove 210 and the protrusion 230 of the door lining 131, forms a tight main seal. The locking screw 241 of the first locking plate 240 is rotated to engage the first... The U-shaped groove 244 of the second locking plate 243, when the handwheel locking block 242 is turned, locks the sealing end 200 and the door liner 131, preventing the sealing door 130 from loosening. At the same time, the stainless steel elastic expansion tube 320 is bolted to the furnace port flange 300 and the door flange 310 through the connecting flanges 321 at both ends. The second sealing ring 322 of the connecting flange 321 forms a secondary seal. The elastic expansion tube 320 expands and contracts with the opening and closing of the sealing door 130, further blocking gas leakage. The whole system achieves reliable sealing through the synergistic effect of "main seal + auxiliary seal + mechanical locking" to meet the high-temperature heating requirements.

[0024] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A sealing structure for a high-temperature box-type resistance furnace, characterized in that, include: A resistance furnace body (100) is provided, with a furnace lining (110) fixedly installed inside the resistance furnace body (100). A furnace opening is provided on the outer wall of the front end of the resistance furnace body (100). A sealing door (130) is rotatably connected to the outer wall of the front end of the furnace opening via a hinge. A door lining (131) is fixedly installed on the inner wall of the sealing door (130). The sealing assembly includes a sealing end (200), which is fixedly installed on the outer wall of the furnace opening. A first sealing ring (220) is fixedly installed inside the sealing end (200). The connection between the sealing end (200) and the door liner (131) is fixedly connected by a locking member. The auxiliary sealing assembly includes an elastic telescopic tube (320), the two ends of which are fixedly connected to the outer wall of the resistance furnace body (100) and the sealing door (130), respectively, and the elastic telescopic tube (320) is located on the outside of the door liner (131).

2. The sealing structure of a high-temperature box-type resistance furnace according to claim 1, characterized in that, The inner wall of the sealing end (200) is provided with a sealing groove (210), the interior of the sealing groove (210) is a T-shaped recessed groove structure, the inner wall of the sealing groove (210) is fitted with a first sealing ring (220), and the outer wall of the door liner (131) is provided with a protrusion (230) that fits and seals with the sealing groove (210).

3. The sealing structure of a high-temperature box-type resistance furnace according to claim 2, characterized in that, The locking component includes a first locking plate (240) and a second locking plate (243), which are arranged in pairs. The first locking plate (240) is welded to the outer wall of the sealing end (200).

4. The sealing structure of a high-temperature box-type resistance furnace according to claim 3, characterized in that, The second locking plate (243) is welded to the outer wall of the door liner (131). The first locking plate (240) and the second locking plate (243) fit together when the sealed door (130) is closed. The inner wall of the first locking plate (240) is rotatably connected to the locking screw (241) via a rotating shaft.

5. The sealing structure of a high-temperature box-type resistance furnace according to claim 4, characterized in that, The inner wall of the second locking plate (243) is provided with a U-shaped slot (244), and the locking screw (241) is engaged with the inner wall of the U-shaped slot (244) for insertion and connection.

6. The sealing structure of a high-temperature box-type resistance furnace according to claim 5, characterized in that, The outer wall of the locking screw (241) is threadedly connected to the handwheel locking block (242), and the handwheel locking block (242) engages with the outer wall of the second locking plate (243) for locking.

7. The sealing structure of a high-temperature box-type resistance furnace according to claim 1, characterized in that, The outer wall of the sealing end (200) is fixedly installed with a furnace port flange (300), the outer wall of the door liner (131) is fixedly installed with a door flange (310), the elastic telescopic tube (320) is made of stainless steel, and the outer walls of both ends of the elastic telescopic tube (320) are provided with mating flanges (321).

8. The sealing structure of a high-temperature box-type resistance furnace according to claim 7, characterized in that, The second sealing ring (322) is embedded and fixedly installed on the outer wall of the docking flange (321). The second sealing ring (322) is sealed and connected with the furnace opening flange (300) and the door flange (310). The docking flange (321) is detachably fixedly connected with the furnace opening flange (300) and the door flange (310) by bolts.

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