Bottom structure of high-temperature heat treatment furnace

Abstract

The utility model relates to a high-temperature heat treatment furnace bottom structure, and relates to the technical field of heat treatment equipment, the high-temperature heat treatment furnace bottom structure comprises a supporting assembly and a flat plate assembly, the supporting assembly comprises a grid frame, the grid frame is connected to the inner wall of a furnace bottom, the flat plate assembly comprises a plurality of flat plate structures, and the flat plate structures are spliced into a flat plate; the flat plate is connected to the side, away from the furnace bottom, of the grid frame, the side wall of the flat plate is attached to the side wall of the furnace bottom, and the flat plate structure and the grid frame are both made of high-temperature-resistant carbon / carbon composite materials. The heat treatment device has the effects of effectively dispersing thermal stress and improving the heat treatment effect.

Description

Technical Field

[0001] This application relates to the field of heat treatment equipment technology, and particularly to a bottom structure of a high-temperature heat treatment furnace. Background Art

[0002] High-temperature heat treatment furnaces have important applications in industrial production. A high-temperature heat treatment furnace is an important piece of equipment in the production of carbon / carbon composites, and its bottom structure has a crucial impact on the heat treatment effect and service life.

[0003] The existing bottom structure of high-temperature heat treatment furnaces relies on filling materials. This approach not only increases energy consumption but also limits the furnace loading capacity and the improvement of production efficiency. The total volume of conventional bottom filling materials is approximately 1000 - 4000 dm³, and the density is approximately 1.2 g / cm³. During the heating and cooling processes, these filling materials not only consume a large amount of thermal energy for heating but also prolong the overall operation cycle. In current operations, the presence of bottom filling materials results in an energy consumption loss of approximately 1% - 20% of the total energy consumption during the heat treatment process of high-temperature furnaces. At the same time, it increases the cooling time of high-temperature heat treatment furnaces, and after each use, the bottom is uneven and requires repair and leveling under the furnace, thereby affecting product quality and limiting the production efficiency and transfer speed of products.

[0004] In view of the above-related technologies, the bottom structure of the heat treatment furnace uses a single material, which is prone to deformation under long-term high-temperature action, with uneven heat distribution, resulting in incomplete heat treatment and a long cooling time. These problems seriously affect the heat treatment effect and the stability of the equipment. Therefore, how to design a bottom structure of a high-temperature heat treatment furnace that can effectively disperse thermal stress and improve the heat treatment effect has become a technical problem urgently to be solved in this field. Utility Model Content

[0005] To solve the above technical problems, this application provides a bottom structure of a high-temperature heat treatment furnace.

[0006] The bottom structure of a high-temperature heat treatment furnace provided by this application adopts the following technical solution:

[0007] A bottom structure of a high-temperature heat treatment furnace includes a support assembly and a flat plate assembly. The support assembly includes a grid frame, and the grid frame is connected to the inner wall of the furnace bottom. The flat plate assembly includes a plurality of flat plate structures, and the plurality of flat plate structures are spliced into a flat plate. The flat plate is connected to the side of the grid frame away from the furnace bottom, and the side wall of the flat plate is attached to the side wall of the furnace bottom. Both the flat plate structure and the grid frame are made of high-temperature-resistant carbon / carbon composite materials.

[0008] By adopting the above technical solution, when the high-temperature treatment furnace needs to be used, first, the support assembly and the flat plate assembly are prefabricated in the factory, and the grid frame is connected to the furnace bottom. After the connection of the grid frame is completed, multiple flat plate structures are spliced into a flat plate, and then the flat plate and the grid frame are connected so that the side wall of the flat plate fits the side wall of the furnace bottom, and then high-temperature heat treatment is carried out. Compared with the related art, in this application, the grid frame and the flat plate are connected to the bottom of the furnace bottom, which can effectively disperse the thermal stress brought by high temperature, prevent the deformation of the tooling, improve the temperature uniformity at the bottom of the high-temperature treatment furnace, reduce the temperature difference at the furnace bottom, solve the problem of incomplete heat treatment, improve the product quality. The flat plate and the grid frame are made of high-temperature-resistant carbon / carbon composite materials, which have excellent high-temperature resistance and mechanical strength, prevent deformation after long-term use, reduce thermal deformation, and effectively improve the service life and heat treatment effect of the high-temperature treatment furnace, which is beneficial to improving the problem of uneven heat distribution leading to incomplete heat treatment.

[0009] Optionally, the support assembly further includes a support shaft perpendicular to the furnace bottom, and the support shaft is fixed at the center of the furnace bottom;

[0010] The grid frame includes a plurality of support plates and a plurality of load-bearing keel rings. The plurality of support plates are evenly distributed along the circumference of the support shaft. The support plates are arranged parallel to the support shaft. One side of the support plate is fixed to the support shaft. The side of the support plate close to the furnace bottom is set as an arc, and the side of the support plate close to the furnace bottom fits the furnace bottom. The plurality of load-bearing keel rings are all coaxially arranged with the support shaft. The plurality of load-bearing keel rings are distributed from the middle of the furnace bottom to the side wall of the furnace bottom. There is a gap between adjacent two load-bearing keel rings. The plurality of support plates and the plurality of load-bearing keel rings form a grid shape.

[0011] By adopting the above technical solution, when the high-temperature heat treatment furnace needs to be used, a plurality of support plates and a plurality of load-bearing keel rings are connected in advance to form a grid frame, and then the grid frame is connected to the furnace bottom, and then the flat plate and the support plate are connected. By setting the support plate and the load-bearing keel ring to form a grid frame, on the one hand, the support plate is used for connecting various parts of the tooling to improve the strength of the tooling, and the shape is set as an arc to evenly reflect heat; on the other hand, it can further effectively disperse the thermal stress brought by high temperature, prevent the deformation of the tooling, and improve the temperature distribution uniformity.

[0012] Optionally, the load-bearing keel ring includes a plurality of arc-shaped keels. One arc-shaped keel is connected between adjacent two support plates. The opening of the arc-shaped keel faces the support shaft, and both sides of the arc-shaped keel are connected to one support plate respectively;

[0013] The bottom structure of the high-temperature heat treatment furnace further includes a rotating assembly. The rotating assembly includes a plurality of rotating plates and a rotating cylinder. One of the rotating plates is provided between two adjacent support plates. One side of the rotating plate close to the support plate is in contact with the support plate, and one side of the rotating plate close to the furnace bottom is in contact with the furnace bottom. The rotating plate is slidably connected to the furnace bottom and slides along the radian direction of the arc-shaped keel. A receiving groove for receiving the arc-shaped keel is formed on one side of the rotating plate close to the arc-shaped keel. A rotating hole is formed along the length direction of the support shaft, and the rotating cylinder is inserted into the rotating hole. The rotating cylinder is rotatably connected to the support shaft, and the rotating cylinder is connected to the rotating plate to drive the rotating plate to rotate.

[0014] By adopting the above technical solution, when the high-temperature heat treatment furnace needs to be used, a plurality of support plates and a plurality of rotating plates are connected to the furnace bottom. Subsequently, according to the needs of the personnel, it is determined whether the size of the grid needs to be adjusted. If the grid needs to be adjusted, the personnel turn the rotating cylinder. At this time, the rotating plate moves synchronously with the rotating cylinder. The rotating cylinder can slide along the radian direction of the arc-shaped keel, and the grid formed by the support plates and the load-bearing keel can be divided into a plurality of small grids. After the adjustment is completed, the rotating cylinder can be fixed. By setting the rotating plate and the rotating cylinder, it is convenient to adopt small grid units, which can increase the contact area and improve the uniformity of heat flow.

[0015] Optionally, the rotating assembly further includes a rotating shaft. Two of the rotating plates are provided between two adjacent support plates. One of the rotating plates fixed to the rotating cylinder and the rotating plate connected to the rotating shaft are respectively attached to both sides of the same support plate. The rotating shaft extends into the rotating cylinder and is rotatably connected to the rotating cylinder. A sliding hole is formed on the outer wall of the rotating cylinder for the rotating plate not connected to the rotating cylinder to pass through. After the rotating plate not connected to the rotating cylinder extends into the sliding hole, it is fixed to the rotating shaft. The positions of the rotating plate fixed to the rotating cylinder and the rotating plate connected to the rotating shaft on both sides of the same support plate are the same.

[0016] By adopting the above technical solution, when the high-temperature heat treatment furnace needs to be used, a plurality of support plates and a plurality of rotating plates are connected to the furnace bottom. Subsequently, according to the needs of the personnel, it is determined whether the size of the grid needs to be adjusted. The personnel can turn the rotating shaft or the rotating cylinder, which can drive the rotating plate connected to the rotating shaft and the rotating plate connected to the rotating cylinder to move, and the grid formed by the support plates and the load-bearing keel can be divided into a plurality of smaller grids. By setting the cooperation of the rotating shaft and the rotating plate and adopting smaller grid units, the contact area can be further increased and the uniformity of heat flow can be improved.

[0017] Optionally, it further includes a buffer component, which includes two elastic pads. The two elastic pads correspond to the grid frame and the flat plate respectively. The elastic pad close to the grid frame is connected to the grid frame, and the elastic pad close to the flat plate is connected to the flat plate. The two elastic pads are attached to each other. The area of the elastic pad is equal to the area of the flat plate, and the elastic pad is used to absorb and disperse thermal stress.

[0018] By adopting the above technical solution, after connecting the rotating plate and the support plate to the furnace bottom, multiple flat plate structures are spliced into a flat plate. One elastic pad is connected to the support plate, and the other elastic pad is connected to the flat plate. The flat plate is connected to the side wall of the furnace bottom. At this time, the two elastic pads are attached to each other, and the elastic pad is used to absorb and disperse thermal stress, ensuring the elastic contact between the support plate and the flat plate structure at high temperature, and further enhancing the stability and durability of the tooling.

[0019] Optionally, the grid frame includes a plurality of fixing plates. The plurality of fixing plates are divided into two groups. The two groups of fixing plates are perpendicular to each other. The plurality of fixing plates in the same group are arranged parallel to each other. The side of the fixing plate close to the furnace bottom is set to be arc-shaped, and the side of the fixing plate close to the furnace bottom is attached to the furnace bottom. The fixing plate is fixed to the furnace bottom. The two groups of fixing plates form a grid shape, and the flat plate is connected to the fixing plate.

[0020] By adopting the above technical solution, when the high-temperature heat treatment furnace needs to be used, a plurality of fixing plates are spliced into a grid shape in the factory in advance, and then the spliced fixing plates are connected to the furnace bottom. Subsequently, the flat plate and the fixing plate are connected. By arranging a plurality of fixing plates to be spliced into a grid shape, the assembly is simple and convenient for personnel to perform the splicing operation. Connecting the spliced fixing plates to the furnace bottom can effectively disperse the thermal stress brought by high temperature during use and improve the uniformity of the furnace bottom temperature distribution.

[0021] Optionally, the support component further includes a plug-in component, which includes a rectangular grid plate and a plurality of inclined plates. The rectangular grid plate is located above the fixing plate. The rectangular grid on the rectangular grid plate corresponds to the grid formed by the two fixing plates. The rectangular grid plate is connected to the fixing plate. One inclined plate corresponds to one rectangular grid. The inclined plate is fixed to the side of the rectangular grid plate close to the fixing plate. The inclined plate is arranged along the diagonal of the rectangular grid. When the rectangular grid plate and the fixing plate are connected, the inclined plate is inserted into the grid formed by the two groups of fixing plates, and the side of the inclined plate away from the rectangular grid plate is attached to the furnace bottom.

[0022] By adopting the above technical solution, multiple fixing plates are connected to the furnace bottom. Subsequently, according to the needs of the personnel, it is determined whether the size of the grid needs to be adjusted. If the grid needs to be adjusted, the rectangular grid plate is taken out, adjusted to a suitable position, and the rectangular grid plate is connected to the fixing plate. At this time, the inclined plate is inserted into the grid formed by two groups of fixing plates, and the side of the inclined plate away from the rectangular grid plate fits against the bottom wall of the furnace bottom. The inclined plate can adjust the grid formed by two groups of fixing plates into a small grid. By using small grid units, the contact area can be increased, and the uniformity of heat flow can be improved.

[0023] Optionally, the plug-in member further includes a plurality of plug rods. The plurality of plug rods are all fixed on the side of the rectangular grid plate close to the fixing plate. The plug rods are perpendicular to the rectangular grid plate. A slot for the plug rods to be inserted is opened on the side of the fixing plate away from the furnace bottom. The plug rods are in interference fit with the slots.

[0024] By adopting the above technical solution, when it is necessary to connect the rectangular grid plate and the fixing plate, the rectangular grid plate is adjusted to a suitable position so that the plug rods and the slots correspond, and the plug rods are inserted into the slots. After the plug rods are inserted, the rectangular grid plate and the fixing plate can be connected. By setting the plug rods and the slots, it is convenient for personnel to connect the rectangular grid plate and the fixing plate.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Compared with the related technology, the present application uses a grid frame and a flat plate to be connected to the bottom of the furnace, which can effectively disperse the thermal stress brought by high temperature, prevent the deformation of the tooling, improve the temperature uniformity at the bottom of the high-temperature heat treatment furnace, reduce the temperature difference at the furnace bottom, solve the problem of incomplete heat treatment, improve the product quality. The flat plate and the grid frame are made of high-temperature-resistant carbon / carbon composite materials, which have excellent high-temperature resistance and mechanical strength, prevent deformation after long-term use, reduce thermal deformation, and effectively improve the service life and heat treatment effect of the high-temperature heat treatment furnace, which is beneficial to improving the problem of uneven heat distribution leading to incomplete heat treatment;

[0027] 2. By setting the support plate and the load-bearing keel ring to form a grid frame, on the one hand, the support plate is used for connecting various parts of the tooling to improve the strength of the tooling, and the shape is set to be arc-shaped for uniformly reflecting heat; on the other hand, it can further effectively disperse the thermal stress brought by high temperature, prevent the deformation of the tooling, and improve the temperature distribution uniformity;

[0028] 3. By setting the rotating plate and the rotating cylinder, it is convenient to use small grid units, which can increase the contact area and improve the uniformity of heat flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of Embodiment 1;

[0030] Figure 2 is a schematic structural diagram of the support component and the rotating component in Embodiment 1;

[0031] Figure 3 is Figure 2 an enlarged view of A in;

[0032] Figure 4 is a schematic structural diagram of the support component in Embodiment 2;

[0033] Figure 5 is a schematic structural diagram of the plug-in component in Embodiment 2;

[0034] Figure 6 is Figure 5 an enlarged view of B in.

[0035] Explanation of reference numerals: 1, support component; 11, support shaft; 111, rotation hole; 112, rotation groove; 12, grid frame; 121, support plate; 122, load-bearing keel ring; 1221, arc keel; 123, fixing plate; 1231, slot; 13, plug-in component; 131, rectangular grid plate; 132, plug rod; 133, inclined plate; 2, rotating component; 21, rotating plate; 211, receiving groove; 22, rotating cylinder; 221, sliding hole; 23, rotating shaft; 3, flat plate component; 31, flat plate structure; 4, buffer component; 41, elastic pad. Detailed implementation manners

[0036] The following further describes the present application in detail in conjunction with the attached Figures 1-6 drawings.

[0037] An embodiment of the present application discloses a bottom structure of a high-temperature heat treatment furnace.

[0038] Embodiment 1

[0039] Referring to Figure 1 and Figure 2 , a bottom structure of a high-temperature heat treatment furnace includes a support component 1, a rotating component 2, a flat plate component 3 and a buffer component 4. The rotating component 2 is arranged on the support component 1, the flat plate component 3 is arranged above the support component 1, and the buffer component 4 is arranged between the support component 1 and the flat plate component 3.

[0040] Referring to Figure 1 , Figure 2 and Figure 3, the support component 1 includes a support shaft 11 and a grid frame 12. The support shaft 11 is vertically arranged and is located at the center of the furnace bottom. The support shaft 11 is fixedly connected to the furnace bottom by screws. The grid frame 12 includes a plurality of support plates 121 and a plurality of load-bearing keel rings 122. The plurality of support plates 121 are all located at the furnace bottom and are evenly distributed along the circumference of the support shaft 11. The support plates 121 are vertically arranged. One side of each of the plurality of support plates 121 is close to the support shaft 11. The support plates 121 are fixedly connected to the support shaft 11 by screws. The side of the support plate 121 close to the furnace bottom is arc-shaped and is in contact with the furnace bottom, which is used to evenly reflect heat and optimize the heat distribution at the furnace bottom during the high-temperature furnace treatment process. The sides of the plurality of support plates 121 away from the furnace bottom are flush with each other. The support plates 121 are used for connecting various parts of the tooling to improve the strength of the tooling.

[0041] Refer to Figure 2 , the load-bearing keel ring 122 is located at the furnace bottom. The load-bearing keel ring 122 can be one, or two or more. The specific number depends on the personnel requirements. In this embodiment, the number of load-bearing keel rings 122 is two. The two load-bearing keel rings 122 are arranged from the middle of the furnace bottom towards the furnace bottom side wall. There is a gap between the two load-bearing keel rings 122. The load-bearing keel ring 122 includes a plurality of arc-shaped keels 1221. One arc-shaped keel 1221 is arranged between two adjacent support plates 121. The opening of the arc-shaped keel 1221 faces the support shaft 11. Both sides of the arc-shaped keel 1221 are welded to one support plate 121 respectively. The setting method of the other load-bearing keel ring 122 is the same as that of the above-mentioned load-bearing keel ring 122; the plurality of support plates 121 and the two load-bearing keel rings 122 form a grid shape. In this embodiment, the support plates 121 and the load-bearing keel rings 122 are made of carbon / carbon composite materials that can withstand high temperatures up to 2600 °C. To prevent deformation after long-term use and reduce heat-induced deformation, the service life and heat treatment effect of the high-temperature heat treatment furnace are effectively improved; the load-bearing keel ring 122 is the core of the entire tooling, connecting the tooling and bearing the main load. Through simulation and tooling design and grid design, the thermal stress brought by high temperature can be effectively dispersed, preventing the tooling from deforming and improving the temperature distribution uniformity. The grid structure increases the contact area with the workpiece, enabling the thermal stress to be more evenly distributed, which helps to reduce local thermal stress concentration and avoid deformation or cracks in the workpiece during the heat treatment process; the grid structure design improves the temperature uniformity at the bottom of the high-temperature heat treatment furnace, reduces the temperature difference at the furnace bottom, solves the problem of incomplete heat treatment, and improves the product quality; it saves electricity consumption during the use of the high-temperature heat treatment furnace, and the electricity consumption per unit weight can be reduced by 3%-10%.

[0042] Refer to Figure 2 and Figure 3, the rotating assembly 2 includes a plurality of rotating plates 21, a rotating cylinder 22 and a rotating shaft 23. At least one rotating plate 21 is provided between two adjacent support plates 121. In this embodiment, two rotating plates 21 are provided between two adjacent support plates 121, and each of the two rotating plates 21 is in contact with one support plate 121. The plurality of rotating plates 21 are circumferentially distributed along the support shaft 11. The rotating plates 21 are vertically arranged, and one side of the plurality of rotating plates 21 is close to the support shaft 11. The rotating plates 21 are rotatably connected to the support shaft 11. The side of the rotating plate 21 close to the furnace bottom is arc-shaped, and the side of the rotating plate 21 close to the furnace bottom is in contact with the furnace bottom. The rotating plate 21 is slidably connected to the furnace bottom, and the rotating plate 21 slides along the radian direction of the arc-shaped keel 1221. A receiving groove 211 for receiving the arc-shaped keel 1221 is formed on one side of the rotating plate 21 close to the arc-shaped keel 1221, which can guide the rotating plate 21.

[0043] Refer to Figure 2 and Figure 3 , a rotating hole 111 is formed in the support shaft 11. The rotating hole 111 is formed along the length direction of the support shaft 11. The rotating cylinder 22 is hollow, and the rotating cylinder 22 is coaxially arranged with the support shaft 11. The rotating cylinder 22 is inserted into the rotating hole 111, and the rotating cylinder 22 is rotatably connected to the support shaft 11. A rotating groove 112 for the rotating plate 21 to rotate is formed on the outer wall of the support shaft 11. The rotating plate 21 in contact with one side of the support plate 121 extends into the rotating groove 112 and is welded to the rotating cylinder 22. On both sides of the same support plate 121, there are a rotating plate 21 fixed to the rotating cylinder 22 and a rotating plate 21 connected to the rotating shaft 23 in contact respectively. The positions of the rotating plate 21 fixed to the rotating cylinder 22 and the rotating plate 21 connected to the rotating shaft 23 on each support plate 121 are the same. The rotating shaft 23 is coaxially arranged with the rotating cylinder 22. The rotating shaft 23 extends into the rotating cylinder 22, and the rotating shaft 23 is rotatably connected to the rotating cylinder 22. A sliding hole 221 for the rotating plate 21 not connected to the rotating cylinder 22 to pass through is formed on the outer wall of the rotating cylinder 22. The rotating plate 21 not connected to the rotating cylinder 22 extends into the sliding hole 221 and is welded to the rotating shaft 23. Personnel can rotate the rotating shaft 23 or the rotating cylinder 22, which can drive the rotating plate 21 connected to the rotating shaft 23 and the rotating plate 21 connected to the rotating cylinder 22 to move. Thus, a smaller grid unit can be used to increase the contact area and improve the uniformity of the heat flux.

[0044] Refer to Figure 2, the flat plate assembly 3 includes a plurality of flat plate structures 31. The plurality of flat plate structures 31 are located on the side of the support plate 121 away from the furnace bottom. Adjacent two flat plate structures 31 are detachably connected by screws. The plurality of flat plate structures 31 are spliced into a flat plate. The flat plate is located on the circular plate, and the side wall of the flat plate is attached to the side wall of the furnace bottom. The flat plate is detachably connected to the support plate 121 by screws. The flat plate structure 31 is made of a high-temperature resistant carbon / carbon composite material flat plate, which has excellent high-temperature resistance and mechanical strength. The plurality of flat plate structures 31 are laid flat as a whole to ensure the flatness of the bottom, evenly bear the weight, facilitate the cleaning of the furnace bottom residue, and improve the heat treatment efficiency of the high-temperature furnace.

[0045] Referring to Figure 2 , the buffer assembly 4 includes two elastic pads 41. The two elastic pads 41 correspond to the support plate 121 and the flat plate respectively. The elastic pad 41 close to the support plate 121 is fixedly connected to the support plate 121 by screws, and the elastic pad 41 close to the flat plate is fixedly connected to the flat plate by screws. The two elastic pads 41 are attached to each other. The elastic pad 41 is a circular pad, and the area of the elastic pad 41 is equal to the area of the flat plate. The elastic pad 41 is used to absorb and disperse thermal stress, ensuring the elastic contact between the support plate 121 and the flat plate structure 31 at high temperatures, and further enhancing the stability and durability of the tooling.

[0046] The implementation principle of Embodiment 1 is as follows: When the high-temperature heat treatment furnace is needed, first, the support assembly 1, the rotating assembly 2, and the flat plate assembly 3 are prefabricated in the factory. The plurality of support plates 121 and the plurality of rotating plates 21 are connected to the furnace bottom. Subsequently, according to the needs of the personnel, it is determined whether the size of the grid needs to be adjusted. If the grid needs to be adjusted, the personnel turn the rotating cylinder 22 or the rotating shaft 23, which can drive the rotating plate 21 connected to the rotating shaft 23 and the rotating plate 21 connected to the rotating cylinder 22 to move, so as to adjust the size of the grid. Then, one of the elastic pads 41 is connected to the support plate 121. After that, the plurality of flat plate structures 31 are spliced so that the plurality of flat plate structures 31 are spliced into a flat plate. The other elastic pad 41 is connected to the flat plate, and the flat plate is connected to the side wall of the furnace bottom. At this time, the two elastic pads 41 are attached to each other. After the installation is completed, high-temperature heat treatment can be carried out.

[0047] Embodiment 2

[0048] Referring to Figure 4 and Figure 5 , the difference between this embodiment and Embodiment 1 is that the grid frame 12 further includes fixing plates 123. The plurality of fixing plates 123 are divided into two groups. The two groups of fixing plates 123 are perpendicular to each other. The plurality of fixing plates 123 in the same group are arranged parallel to each other. The side of the fixing plate 123 close to the furnace bottom is set as an arc, and the side of the fixing plate 123 close to the furnace bottom is attached to the furnace bottom. The fixing plate 123 is welded to the furnace bottom, and the two groups of fixing plates 123 form a grid shape.

[0049] Referring toFigure 4 , Figure 5 and Figure 6 , the support assembly 1 further includes a plug-in member 13. The plug-in member 13 includes a rectangular grid plate 131, a plurality of plug rods 132 and a plurality of inclined plates 133. The rectangular grid plate 131 is located above the fixing plate 123. The rectangular grid on the rectangular grid plate 131 corresponds to the grid formed by the two fixing plates 123. A plurality of plug rods 132 are all located on the side of the rectangular grid plate 131 close to the fixing plate 123. The plug rods 132 are perpendicular to the rectangular grid plate 131, and the plug rods 132 are welded to the rectangular grid plate 131. A slot 1231 for the plug rods 132 to insert is formed on the side of the fixing plate 123 away from the furnace bottom. The plug rods 132 are in interference fit with the slot 1231. One inclined plate 133 corresponds to one rectangular grid. The inclined plate 133 is located on the side of the rectangular grid plate 131 close to the fixing plate 123. The inclined plate 133 is arranged along the diagonal of the rectangular grid, and the inclined plate 133 is welded to the rectangular grid plate 131. After the plug rods 132 are inserted into the slot 1231, the inclined plate 133 is inserted into the grid formed by the two fixing plates 123. The side of the inclined plate 133 away from the rectangular grid plate 131 is attached to the bottom wall of the furnace bottom, so as to adjust the grid formed by the two fixing plates 123 into a small grid, improving the uniformity of the heat flow.

[0050] The implementation principle of Embodiment 2 is as follows: After connecting a plurality of fixing plates 123 to the furnace bottom and forming a grid shape with the plurality of fixing plates 123, then, according to the needs of the personnel, it is determined whether it is necessary to adjust the size of the grid. If the grid needs to be adjusted, the rectangular grid plate 131 is taken out, the plug rods 132 on the rectangular grid plate 131 are inserted into the slot 1231, and the inclined plate 133 can adjust the grid formed by the two fixing plates 123 into a small grid, and then the next process operation is carried out.

[0051] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape and principle of this application should be covered within the protection scope of this application.

Claims

1. A bottom structure of a high temperature heat treatment furnace, characterized in that: The invention comprises a support assembly (1) and a flat plate assembly (3), wherein the support assembly (1) comprises a grid frame (12), wherein the grid frame (12) is connected to the inner wall of a furnace bottom, wherein the flat plate assembly (3) comprises a plurality of flat plate structures (31), wherein the plurality of flat plate structures (31) are spliced ​​into a flat plate, wherein the flat plate is connected to a side of the grid frame (12) away from the furnace bottom, wherein a side wall of the flat plate is in contact with a side wall of the furnace bottom, and wherein both the flat plate structure (31) and the grid frame (12) are made of a high temperature resistant carbon / carbon composite material.

2. The bottom structure of a high temperature heat treatment furnace according to claim 1, characterized in that: The support assembly (1) further comprises a support shaft (11), wherein the support shaft (11) is perpendicular to the furnace bottom and is fixed at the center of the furnace bottom; The grid frame (12) comprises a plurality of support plates (121) and a plurality of load-bearing keel rings (122); the plurality of support plates (121) are evenly distributed along the circumference of the support shaft (11); the support plates (121) are arranged parallel to the support shaft (11); one side of the support plates (121) is fixed to the support shaft (11); the side of the support plates (121) close to the furnace bottom is arranged in an arc shape; the side of the support plates (121) close to the furnace bottom is in contact with the furnace bottom; the plurality of load-bearing keel rings (122) are coaxially arranged with the support shaft (11); the plurality of load-bearing keel rings (122) are distributed along the middle of the furnace bottom toward the side wall of the furnace bottom; a gap is left between two adjacent load-bearing keel rings (122); and the plurality of support plates (121) and the plurality of load-bearing keel rings (122) form a grid shape.

3. The bottom structure of a high temperature heat treatment furnace according to claim 2, characterized in that: The load-bearing keel ring (122) comprises a plurality of arc-shaped keels (1221), one arc-shaped keel (1221) is connected between two adjacent support plates (121), the arc-shaped keel (1221) opens toward the support shaft (11), and both sides of the arc-shaped keel (1221) are connected to one support plate (121); The bottom structure of the high-temperature heat treatment furnace also includes a rotating assembly (2), the rotating assembly (2) includes a plurality of rotating plates (21) and a rotating cylinder (22), one rotating plate (21) is provided between two adjacent supporting plates (121), the rotating plate (21) is in contact with the supporting plate (121) on one side close to the supporting plate (121), the rotating plate (21) is in contact with the furnace bottom on one side close to the furnace bottom, the rotating plate (21) is slidably connected to the furnace bottom, and the rotating plate (21) is moved along the arc keel ( The rotating plate (21) is provided with a receiving groove (211) for receiving the arc-shaped keel (1221) on one side of the rotating plate (21) close to the arc-shaped keel (1221); a rotating hole (111) is provided along the length direction of the supporting shaft (11); the rotating cylinder (22) is inserted into the rotating hole (111); the rotating cylinder (22) is rotatably connected to the supporting shaft (11); and the rotating cylinder (22) is connected to the rotating plate (21) to drive the rotating plate (21) to rotate.

4. The bottom structure of a high temperature heat treatment furnace according to claim 3, characterized in that: The rotating assembly (2) further comprises a rotating shaft (23), two rotating plates (21) are arranged between two adjacent supporting plates (121), the rotating plates (21) fixed to the rotating cylinder (22) and the rotating plates (21) connected to the rotating shaft (23) are respectively attached to the two sides of the same supporting plate (121), the rotating shaft (23) extends into the rotating cylinder (22), the rotating shaft (23) is rotatably connected to the rotating cylinder (22), the outer wall of the rotating cylinder (22) is provided with a sliding hole (221) for the rotating plate (21) not connected to the rotating cylinder (22) to pass through, the rotating plate (21) not connected to the rotating cylinder (22) extends into the sliding hole (221) and is fixed to the rotating shaft (23), and the rotating plates (21) fixed to the rotating cylinder (22) and the rotating plates (21) connected to the rotating shaft (23) on both sides of the same supporting plate (121) are in the same position.

5. The bottom structure of a high temperature heat treatment furnace according to claim 1, characterized in that: The invention also comprises a buffer component (4), wherein the buffer component (4) comprises two elastic pads (41), wherein the two elastic pads (41) respectively correspond to the grid frame (12) and the flat plate, wherein the elastic pad (41) close to the grid frame (12) is connected to the grid frame (12), and the elastic pad (41) close to the flat plate is connected to the flat plate, wherein the two elastic pads (41) are attached to each other, and the area of ​​the elastic pad (41) is equal to the area of ​​the flat plate, and the elastic pad (41) is used to absorb and disperse thermal stress.

6. The bottom structure of a high temperature heat treatment furnace according to claim 1, characterized in that: The grid frame (12) comprises a plurality of fixing plates (123), wherein the plurality of fixing plates (123) are divided into two groups, the two groups of fixing plates (123) are perpendicular to each other, and the plurality of fixing plates (123) in the same group of fixing plates (123) are arranged parallel to each other, the fixing plates (123) are arranged in an arc shape on one side close to the furnace bottom, the fixing plates (123) are fitted with the furnace bottom on one side close to the furnace bottom, the fixing plates (123) are fixed to the furnace bottom, the two groups of fixing plates (123) form a grid shape, and the flat plate is connected to the fixing plates (123).

7. The bottom structure of a high temperature heat treatment furnace according to claim 6, characterized in that: The support assembly (1) further comprises a plug-in connector (13), the plug-in connector (13) comprising a rectangular grid plate (131) and a plurality of inclined plates (133), the rectangular grid plate (131) being located above the fixed plate (123), the rectangular grid on the rectangular grid plate (131) corresponding to the grid formed by the two fixed plates (123), the rectangular grid plate (131) being connected to the fixed plate (123), one inclined plate (133) corresponding to one rectangular grid, the inclined plate (133) being fixed to a side of the rectangular grid plate (131) close to the fixed plate (123), the inclined plate (133) being arranged along the diagonal of the rectangular grid, and when the rectangular grid plate (131) and the fixed plate (123) are connected, the inclined plate (133) is inserted into the grid formed by the two groups of fixed plates (123), and the side of the inclined plate (133) away from the rectangular grid plate (131) is in contact with the furnace bottom.

8. The bottom structure of a high temperature heat treatment furnace according to claim 7, characterized in that: The plug-in connector (13) further comprises a plurality of plug rods (132), wherein the plurality of plug rods (132) are all fixed to a side of the rectangular grid plate (131) close to the fixed plate (123), the plug rods (132) are perpendicular to the rectangular grid plate (131), and a slot (1231) for inserting the plug rods (132) is provided on a side of the fixed plate (123) away from the furnace bottom, and the plug rods (132) are interference fit with the slots (1231).

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