Sealing structure of graphitization furnace lining high-temperature-resistant composite material

Abstract

The utility model belongs to the technical field of graphitization furnaces, and particularly relates to a graphitization furnace lining high-temperature-resistant composite material sealing structure which comprises a furnace body and a cover body assembled on the top of the furnace body. A second fixing ring and a first fixing ring are arranged at the position, close to the top end, of the outer side of the furnace body and the position, close to the bottom end, of the outer side of the cover body correspondingly, a plurality of mounting blocks are mounted on the outer side of the furnace body, a rotating frame is rotationally connected into each mounting block, and threaded rods are in threaded connection with the interiors of the top ends of the rotating frames; the bottom of the threaded rod abuts against the first fixing ring, an insertion column is fixed into the cover body, a fixing ring plate is arranged at the position, close to the top end, of the inner side of the furnace body, the insertion column is in threaded connection with the fixing ring plate, and an abutting structure is installed at the top end of the inner side of the cover body. The sealing structure can effectively cope with high-temperature and high-pressure working conditions of the graphitization furnace, all the sealing layers act synergistically, the sealing reliability can be remarkably improved, and materials inside and outside the furnace are prevented from moving mutually.

Description

Technical Field

[0001] This utility model belongs to the field of graphitization furnace technology, specifically relating to a sealing structure of a high-temperature resistant composite material lining for a graphitization furnace. Background Technology

[0002] Graphitization furnaces play an important role in modern industrial production, especially in the preparation of high-end materials such as lithium battery anode materials and special graphite. In these high-temperature, high-pressure production environments with extremely high requirements for material purity, the sealing performance of the graphitization furnace lining becomes a key factor affecting product quality, production efficiency, and safe operation of the equipment.

[0003] Currently, the sealing of graphitization furnace linings in existing technologies often employs a single sealing structure or a simple combination of sealing methods. For example, some graphitization furnaces achieve sealing by precision machining of the mating surfaces to improve the fitting accuracy between components. However, in actual production, the sealing method that relies solely on improving the fitting accuracy of the mating surfaces has low reliability. Even slight thermal deformation or pressure fluctuations can easily lead to seal failure, causing material to cross between the inside and outside of the furnace. Once material cross between the furnace and the outside occurs, it will not only seriously affect the purity of the graphitized material inside the furnace and reduce product quality, but may also cause safety hazards due to material leakage, threatening the lives of production personnel and the normal operation of production equipment.

[0004] Some sealing structures, although using sealing materials such as soft felt layers and graphite ropes, are only single-layer or simple combination sealing methods. Under harsh working conditions of high temperature and high pressure, single-layer sealing structures cannot withstand the test of extreme conditions for a long time, and are prone to problems such as material aging and wear, resulting in a gradual decline in sealing performance and inability to continuously and effectively ensure the stability of the furnace environment.

[0005] In summary, existing graphitization furnace lining sealing structures suffer from drawbacks such as low sealing reliability and susceptibility to operating conditions when facing high-temperature, high-pressure, and high-purity production requirements, failing to meet the growing demands of industrial production. Therefore, it is necessary to develop a graphitization furnace sealing structure capable of multi-layer sealing of the furnace lining. Utility Model Content

[0006] The purpose of this invention is to provide a sealing structure for a high-temperature resistant composite material lining of a graphitization furnace, which can effectively cope with the high temperature and high pressure conditions of the graphitization furnace. The synergistic effect of each sealing layer can significantly improve the sealing reliability, prevent cross-contamination of materials inside and outside the furnace, ensure the purity of materials inside the furnace, and improve product quality.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A sealing structure for a high-temperature resistant composite material lining of a graphitization furnace includes a furnace body and a cover assembled on the top of the furnace body. A second fixing ring and a first fixing ring are respectively provided on the outer side of the furnace body near the top and on the outer side of the cover near the bottom.

[0009] Multiple mounting blocks are installed on the outside of the furnace body. Each mounting block is rotatably connected to a rotating frame. A threaded rod is threadedly connected to the top of the rotating frame, and the bottom of the threaded rod abuts against the first fixing ring.

[0010] An insertion post is fixed inside the cover, and a fixing ring plate is provided on the inner side of the furnace body near the top. The insertion post is threadedly connected to the fixing ring plate, and an abutment structure is installed at the top of the inner side of the cover.

[0011] The abutting structure includes a fixing block fixed to the top of the fixing ring plate, a spring installed at the top of the inner side of the cover, a moving block fixed to the bottom of the spring, and the moving block abutting against the fixing block.

[0012] The fixed block and the movable block are both provided with notches on their respective sides that are close to each other, and the notches on the fixed block and the notches on the movable block abut against each other and fit together.

[0013] A limit strip is fixed at the top of the inner side of the cover and inside the spring.

[0014] The outer side of the furnace body and the inner side of the cover are respectively provided with a plurality of second sealing strips and a plurality of first sealing strips, and the plurality of second sealing strips and the plurality of first sealing strips are interlocked and abut against each other.

[0015] The diameter of the first sealing strip is greater than the diameter of the second sealing strip, or the diameter of the second sealing strip is greater than the diameter of the first sealing strip.

[0016] The technical effects achieved by this utility model are as follows:

[0017] This invention first achieves a first layer of sealing through the contact between the fixed block and the moving block, then a second layer of sealing through the contact between the first and second sealing strips, and finally a third layer of sealing by clamping the first fixed ring with the threaded rod on the outside. This effectively addresses the high temperature and high pressure conditions of graphitization furnaces. The synergistic effect of each sealing layer significantly improves sealing reliability, prevents cross-contamination of materials inside and outside the furnace, ensures the purity of materials inside the furnace, and improves product quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure between the rotating frame, the threaded rod, and the first fixed ring in this utility model;

[0020] Figure 3 This is a sectional view of the furnace body and the cover of this utility model;

[0021] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Furnace body; 2. Cover; 3. First fixing ring; 4. Second fixing ring; 5. Rotating frame; 6. Threaded rod; 7. Fixing ring plate; 8. Fixing block; 9. Moving block; 10. Notched groove; 11. Spring; 12. Limiting strip; 13. First sealing strip; 14. Second sealing strip; 15. Mounting block; 16. Insertion column. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] like Figures 1-4 As shown, a sealing structure for a high-temperature resistant composite material lining of a graphitization furnace includes a furnace body 1 and a cover 2 assembled on the top of the furnace body 1. A second fixing ring 4 and a first fixing ring 3 are respectively provided on the outer side of the furnace body 1 near the top and on the outer side of the cover 2 near the bottom. Multiple mounting blocks 15 are installed on the outer side of the furnace body 1. A rotating frame 5 is rotatably connected inside each mounting block 15. A threaded rod 6 is threadedly connected to the top of the rotating frame 5, and the bottom of the threaded rod 6 abuts against the first fixing ring 3.

[0026] An insertion post 16 is fixed inside the cover 2. A fixing ring plate 7 is provided on the inner side of the furnace body 1 near the top. The insertion post 16 is threadedly connected to the fixing ring plate 7. When it is necessary to cover the furnace body 1 with the cover 2, the insertion post 16 can be inserted into the furnace body 1. The insertion post 16 and the furnace body 1 are locked together by the threaded connection between the insertion post 16 and the fixing ring plate 7.

[0027] When the device is working, after the raw material is placed in the furnace body 1, the cover 2 is placed on the upper part of the furnace body 1. At this time, the rotating frame 5 can be rotated to the top of the first fixed ring 3 and the threaded rod 6 is screwed so that the lower part of the threaded rod 6 is in contact with the first fixed ring 3, thereby making the first fixed ring 3 and the second fixed ring 4 fit together tightly. Flexible sealing gaskets are provided on the side of the first fixed ring 3 and the second fixed ring 4 that are close to each other, so as to ensure the sealing effect.

[0028] See attached document Figures 3-4 The top inner side of the cover 2 is equipped with an abutment structure, which includes a fixing block 8 fixed to the top of the fixing ring plate 7. A spring 11 is installed at the top inner side of the cover 2, and a movable block 9 is fixed to the bottom of the spring 11. The movable block 9 and the fixing block 8 abut against each other. (See attached figure) Figure 4 The fixed block 8 and the movable block 9 are provided with notches 10 on their respective sides, and the notches 10 on the fixed block 8 and the notches 10 on the movable block 9 abut and fit together. With this arrangement, after the fixed block 8 and the movable block 9 abut together, the gap between the fixed block 8 and the movable block 9 forms a vertical Z-shape, thereby increasing the contact area between the fixed block 8 and the movable block 9 and ensuring the sealing effect.

[0029] After the insertion post 16 is screwed together with the fixed ring plate 7, the movable block 9 abuts against the fixed block 8. Continue to screw the cover 2 and the insertion post 16 until the movable block 9 abuts against the fixed block 8, thereby compressing the spring 11. This improves the abutment effect between the fixed block 8 and the movable block 9, thus sealing the inside of the furnace body 1 and preventing oxygen and other gases from entering the furnace body 1 and causing oxidation of various components inside the furnace body 1. A limit strip 12 is fixed at the top of the inner side of the cover 2 and inside the spring 11. The limit strip 12 prevents the spring 11 from tilting when it is compressed. The limit strip 12 can be either not in contact with the movable block 9 or can slide up and down with the movable block 9 to prevent the spring 11 from tilting due to the large friction between the movable block 9 and the fixed block 8 when the movable block 9 rotates with the insertion post 16.

[0030] See attached document Figures 3-4Multiple second sealing strips 14 and multiple first sealing strips 13 are respectively provided on the outer side of the furnace body 1 and the inner side of the cover 2. The multiple second sealing strips 14 and multiple first sealing strips 13 are interlocked and abut against each other. When screwed, the first sealing strips 13 move with the cover 2, thereby moving the first sealing strips 13 to contact the second sealing strips 14, until the multiple first sealing strips 13 and multiple second sealing strips 14 have an interlocking contact effect. The first sealing strips 13 and the second sealing strips 14 are made of flexible material, so that the first sealing strips 13 and the second sealing strips 14 deform when in contact, thereby ensuring that the first sealing strips 13 and the second sealing strips 14 are in contact with the interior of the furnace body 1. The sealing effect is achieved because the first sealing strip 13 and the second sealing strip 14 are located in the outer part of the furnace body 1. Therefore, the high temperature inside the furnace body 1 has almost no effect on the first sealing strip 13 and the second sealing strip 14. Furthermore, the diameter of the first sealing strip 13 is larger than the diameter of the second sealing strip 14, or the diameter of the second sealing strip 14 is larger than the diameter of the first sealing strip 13. With this arrangement, when the first sealing strip 13 moves with the cover 2, because the diameters of the first sealing strip 13 and the second sealing strip 14 are different, the first sealing strip 13 moves downward more quickly and without resistance, squeezing the second sealing strip 14, causing the first sealing strip 13 to move to the lower side of the second sealing strip 14.

[0031] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A sealing structure for a high-temperature resistant composite material lining of a graphitization furnace, comprising a furnace body (1) and a cover (2) assembled on top of the furnace body (1), characterized in that: A second fixing ring (4) and a first fixing ring (3) are respectively provided on the outer side of the furnace body (1) and near the top, and on the outer side of the cover (2) and near the bottom. Multiple mounting blocks (15) are installed on the outside of the furnace body (1). Each mounting block (15) is rotatably connected to a rotating frame (5). The top of the rotating frame (5) is threadedly connected to a threaded rod (6), and the bottom of the threaded rod (6) abuts against the first fixing ring (3). An insertion post (16) is fixed inside the cover (2). A fixing ring plate (7) is provided on the inner side of the furnace body (1) near the top. The insertion post (16) is threadedly connected to the fixing ring plate (7). An abutment structure is installed at the top of the inner side of the cover (2).

2. The sealing structure of a high-temperature resistant composite material lining for a graphitization furnace according to claim 1, characterized in that: The abutting structure includes a fixing block (8) fixed to the top of the fixing ring plate (7), a spring (11) is installed at the top of the inner side of the cover (2), a moving block (9) is fixed at the bottom of the spring (11), and the moving block (9) abuts against the fixing block (8).

3. The sealing structure of a high-temperature resistant composite material lining for a graphitization furnace according to claim 2, characterized in that: The fixed block (8) and the movable block (9) are provided with notches (10) on their respective sides, and the notches (10) on the fixed block (8) and the movable block (9) abut and fit together.

4. The sealing structure of a high-temperature resistant composite material lining for a graphitization furnace according to claim 2, characterized in that: A limit strip (12) is fixed at the top of the inner side of the cover (2) and inside the spring (11).

5. The sealing structure of a high-temperature resistant composite material lining for a graphitization furnace according to claim 1, characterized in that: The outer side of the furnace body (1) and the inner side of the cover (2) are respectively provided with a plurality of second sealing strips (14) and a plurality of first sealing strips (13), and the plurality of second sealing strips (14) and the plurality of first sealing strips (13) are interlocked and abut against each other.

6. The sealing structure of a high-temperature resistant composite material lining for a graphitization furnace according to claim 5, characterized in that: The diameter of the first sealing strip (13) is greater than the diameter of the second sealing strip (14), or the diameter of the second sealing strip (14) is greater than the diameter of the first sealing strip (13).

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