High-temperature continuous graphitization equipment supported by double bedplates

Abstract

The invention discloses high-temperature continuous graphitization equipment supported by double bedplates, which comprises an unwinding mechanism, a preheating furnace body, a plurality of graphitization furnace bodies arranged side by side, a cooling furnace body and a winding mechanism which are arranged in sequence so as to realize continuous production of graphitization felts, cleaning bins are arranged at an inlet of the preheating furnace body and an outlet of the cooling furnace body, double-platen supporting mechanisms are arranged in the cleaning bins, the preheating furnace body, the graphitization furnace body and the cooling furnace body, and each double-platen supporting mechanism comprises an upper supporting plate assembly and a lower supporting plate assembly which are arranged in a stacked mode. The upper supporting plate assembly and the lower supporting plate assembly are each provided with two layers of graphite felts. The device has the characteristics of compact structure, high stability, high heating uniformity and the like, and the graphite felts are separately produced in multiple layers, so that the heating temperature uniformity of the upper-layer graphite felt and the lower-layer graphite felt is better, and the product quality consistency is better.

Description

Technical Field

[0001] The invention relates to the technical field of graphite soft felt production equipment, and in particular to a high-temperature continuous graphitization equipment supported by double platens. Background Art

[0002] Graphite soft felt is made of carbon felt through graphitization. It has the properties of light weight, good resistance, high carbon content, high temperature resistance, no volatility at high temperature, corrosion resistance, low thermal conductivity, and high shape retention. It is especially suitable for special materials of semiconductors, excellent insulation materials of high temperature vacuum furnaces (especially suitable for single crystal furnaces), and also anti-corrosion filter materials. With the rapid development of modern industry, the continuous batch production of graphite soft felt is particularly urgent.

[0003] At present, the equipment for preparing graphite soft felt includes: intermittent high-temperature vacuum furnace, stick-type continuous high-temperature graphitization furnace, and single-layer platen continuous high-temperature graphitization furnace.

[0004] (1) Intermittent furnaces are intermittent cycle production processes such as loading, heating, constant temperature, cooling and unloading. There is a large amount of heat energy loss in the repeated heating and cooling process, and the heat utilization rate is low; intermittent furnaces are intermittent production processes such as loading and unloading, and cannot be produced continuously, and the output is low. The production process is greatly affected by various factors such as tar and dust, and it is difficult to achieve consistent product quality for each furnace; the loading and unloading processes of intermittent furnaces are complicated and require manual operation. The small amount of tar and a large amount of ash powder produced in the furnace need to be manually cleaned, the working environment is poor, and automated production cannot be achieved.

[0005] (2) During the production process of the stick-type continuous high-temperature graphitization furnace, the graphite felt slides on the stick. During the sliding process, the friction between the felt and the stick produces a large amount of carbon fiber filaments. After about 20 days of production, the bottom of the furnace will accumulate 10 cm high, which is easy to contact the heater to form a short circuit and needs to be repaired. In addition, the carbon fiber filaments will also accumulate on the heater. After accumulating to a certain extent, they will drip onto the felt. The dripping places on the felt will form burnt black marks, affecting the quality of the felt.

[0006] (3) During the production process of a single-layer platen continuous high-temperature graphitization furnace, the graphite felt slides on the graphite platen. The dust generated during the production process is removed by the felt's own cleaning function to remove the carbon fiber ribbon from the furnace. However, when producing three or more layers, the middle layer will have uneven sintering problems, resulting in uneven quality of the graphite felt. Summary of the invention

[0007] The technical problem to be solved by the present invention is as follows: In view of the above-mentioned problems in the prior art, a high-temperature continuous graphitization equipment supported by double platens is provided, which has a compact structure, high stability and high heating uniformity.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] A high-temperature continuous graphitization equipment supported by double platens, comprising an unwinding mechanism, a preheating furnace body, a plurality of graphitization furnace bodies arranged side by side, a cooling furnace body and a winding mechanism arranged in sequence, so as to realize continuous production of graphitized felt; a cleaning bin is provided at the entrance of the preheating furnace body and the exit of the cooling furnace body, and a double platen supporting mechanism is provided in the cleaning bin, the preheating furnace body, the graphitization furnace body and the cooling furnace body, and the double platen supporting mechanism comprises an upper supporting plate assembly and a lower supporting plate assembly arranged in a stacked manner, and during the production process, the upper supporting plate assembly and the lower supporting plate assembly each carry two layers of graphite felt.

[0010] As a further improvement of the present invention, the upper support plate assembly includes a first graphite column, a first support block, an upper graphite plate and a first graphite baffle; the bottom of the first graphite column is connected to the lower support plate assembly, the top of the first graphite column is provided with a first support block, the two sides of the upper graphite plate are respectively overlapped on the corresponding first support blocks, and the side of the upper graphite plate is provided with a first graphite baffle; during the production process, two layers of graphite felt are simultaneously run on the upper graphite plate.

[0011] As a further improvement of the present invention, the lower support plate assembly includes a second graphite column, a second support block, a lower graphite plate and a second graphite baffle; the bottom of the second graphite column is connected to the bottom of the furnace body, and a second support block is provided on the top of the second graphite column. The two sides of the lower graphite plate are respectively overlapped on the corresponding second support blocks, and a second graphite baffle is provided on the side of the lower graphite plate, and the bottom of the first graphite column is connected to the second graphite baffle; during the production process, two layers of graphite felt are simultaneously run on the lower graphite plate.

[0012] As a further improvement of the present invention, the lower support plate assembly also includes a third graphite column and a third support block, the third graphite column is located in the middle position of the bottom of the lower graphite plate, the bottom of the third graphite column is connected to the bottom of the furnace body, the top of the third graphite column is provided with a third support block, and the middle part of the lower graphite plate is overlapped on the third support block.

[0013] As a further improvement of the present invention, a one-centimeter expansion gap is reserved between the side edge of the upper graphite plate and the first support block; and a one-centimeter expansion gap is reserved between the side edge of the lower graphite plate and the second support block.

[0014] As a further improvement of the present invention, the cleaning chamber includes an exhaust hood, an air inlet pipe, a curtain, a first top cover plate, a first base and a chamber body; the chamber body is installed and fixed by the first base, a removable first top cover plate is provided on the top of the chamber body, and a plurality of curtains are provided inside the chamber body to isolate the interior of the chamber body into a plurality of cleaning chambers, the air inlet pipe is arranged on the upper part of the first base and extends into the chamber body to realize the delivery of inert gas into the cleaning chamber; the exhaust hood is arranged on the side of the chamber body to realize the discharge of gas in the cleaning chamber.

[0015] As a further improvement of the present invention, the bottom plate of the bin body is mirror polished.

[0016] As a further improvement of the present invention, the cooling furnace body includes a pre-cooling furnace body, a water bag furnace body and a water-cooled furnace body which are connected in sequence, and the pre-cooling furnace body is connected to the graphitizing furnace body, and the water-cooling furnace body is connected to the winding mechanism; the pre-cooling furnace body is composed of a furnace shell and a thermal insulation material, the furnace body adopts a water-free cooling structure, and a thermocouple is used to measure the temperature in the furnace; the water bag furnace body is composed of a water-cooled furnace body and a thermal insulation material, a water-cooling structure is adopted around the furnace shell for cooling, and an optical pyrometer is used for temperature measurement and a thermocouple is used for temperature calibration; the water-cooled furnace body adopts an open structure, and the inner and outer tanks of the water bag are disconnected and welded from the end face flange.

[0017] As a further improvement of the present invention, a smoke exhaust pipe is provided on the top of the graphitization furnace body connected to the preheating furnace body, the smoke exhaust pipe includes a main pipe and multiple branch pipes, and a tar discharge hole is installed under the main pipe, one end of the branch pipe is connected to the graphitization furnace body, and one end of the branch pipe is connected to the main pipe, and the multiple branch pipes are respectively connected to areas with different temperature ranges in the graphitization furnace body.

[0018] As a further improvement of the present invention, a graphite heating electrode is provided in the graphitization furnace body, and the graphite heating electrode adopts an upper and lower heating structure.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The high-temperature continuous graphitization equipment supported by double platens of the present invention forms a compact high-temperature continuous graphitization equipment through a sequentially arranged unwinding mechanism, a preheating furnace body, a plurality of graphitization furnace bodies arranged side by side, a cooling furnace body and a winding mechanism, thereby realizing continuous production of graphitized felt; specifically, a cleaning bin is provided at the entrance of the preheating furnace body and the exit of the cooling furnace body, and a double platen supporting mechanism is provided in the cleaning bin, the preheating furnace body, the graphitization furnace body and the cooling furnace body, the double platen supporting mechanism comprises an upper supporting plate assembly and a lower supporting plate assembly which are stacked, and during the production process, the upper supporting plate assembly and the lower supporting plate assembly each carry two layers of graphite felt, namely, four layers of graphite felt are produced simultaneously, which significantly improves the production efficiency of the equipment; and the double platen supporting mechanism is used to produce the graphite felt separately in multiple layers, so that the upper and lower layers of the graphite felt are heated evenly and the product quality consistency is also better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structural principle of a high-temperature continuous graphitization device in a specific embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the structural principle of the cleaning bin in a specific embodiment of the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the structural principle in the middle AA direction;

[0024] Figure 4 This is a schematic diagram of the main structural principle of the smoke exhaust duct in a specific embodiment of the present invention;

[0025] Figure 5 It is a schematic diagram of the top view of the structural principle of the smoke exhaust pipe in a specific embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the side view structure principle of the double-stage support plate in a specific embodiment of the present invention;

[0027] Figure 7 It is a schematic diagram of the main structural principle of the double-stage support plate in a specific embodiment of the present invention;

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure principle of a water-drum furnace body in a specific embodiment of the present invention;

[0029] Fig. 9 This is a schematic diagram of the structural principle of a graphite heating electrode in a specific embodiment of the present invention;

[0030] Fig.10 for Fig. 9 Schematic diagram of the structural principle of the middle DD direction;

[0031] Fig.11 for Fig. 9 Schematic diagram of the structural principle of the EE direction;

[0032] Legend: 1. Unwinding mechanism; 2. Cleaning chamber; 3. Preheating furnace body; 4. Smoke exhaust pipe; 5. Graphitization furnace body; 6. Precooling furnace body; 7. Water bag furnace body; 8. Water cooling furnace body; 9. Rewinding mechanism; 10. Upper support plate assembly; 11. Lower support plate assembly; 12. First graphite column; 13. First support block; 14. Upper graphite plate; 15. First graphite baffle; 16. Second graphite column; 17. Third graphite column; 18. Second support block; 19. Third support block; 20. Lower graphite plate; 21. Second graphite baffle; 22. Exhaust hood; 23. Inlet pipe; 24. Curtain; 25. First top cover plate; 26. First base; 27. Bin; 41. Main pipeline; 42. Branch pipeline; 43. Tar discharge hole; 51. Graphite heating electrode; 511. Electrode support block; 512. True graphite electrode group; 513. Heating strip; 514. Graphite bolt; 515. False electrode group; 516. Support column; 517. Support beam; 71. Outer end plate; 72. Inner end plate; 73. Furnace bottom plate; 74. Second top cover plate; 75. Water bag bottom plate; 76. Water bag upper cover plate; 77. Second base; 78. Reinforcement rib; 79. Water inlet and outlet. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0034] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0036] Example

[0037] like Figures 1 to 11 As shown, the high-temperature continuous graphitization equipment supported by double platens of the present invention comprises an unwinding mechanism 1, a preheating furnace body 3, a plurality of graphitization furnace bodies 5 arranged side by side, a cooling furnace body and a winding mechanism 9 arranged in sequence, so as to realize the continuous production of graphitized felt. A cleaning chamber 2 is provided at the entrance of the preheating furnace body 3 and the exit of the cooling furnace body. The cleaning chamber 2, the preheating furnace body 3, the graphitization furnace body 5 and the cooling furnace body are all provided with a double platen support mechanism, and the double platen support mechanism comprises an upper support plate assembly 10 and a lower support plate assembly 11 arranged in a stacked manner. During the production process, the upper support plate assembly 10 and the lower support plate assembly 11 each carry two layers of graphite felt. It can be seen that the graphitization furnace body 5 is a key equipment for heating and decomposing solids or organic matter in carbon felt under high temperature and oxygen-free conditions, and utilizing thermal activation to realize the orderly transformation of the thermodynamically unstable carbon atoms from the chaotic layer structure to the graphite crystal structure, so as to transform the carbon felt into a graphite felt that meets the use requirements. The specific structural settings of the unwinding mechanism 1, the preheating furnace body 3, the graphitization furnace body 5 and the winding mechanism 9 are common technologies in the field and will not be repeated here.

[0038] In this embodiment, a compact high-temperature continuous graphitization device is formed by sequentially arranged unwinding mechanism 1, preheating furnace body 3, multiple graphitization furnace bodies 5 arranged side by side, cooling furnace body and winding mechanism 9, so as to realize continuous production of graphitized felt. Specifically, a cleaning chamber 2 is provided at the entrance of the preheating furnace body 3 and the exit of the cooling furnace body, and a double-platen support mechanism is provided in the cleaning chamber 2, the preheating furnace body 3, the graphitization furnace body 5 and the cooling furnace body. The double-platen support mechanism includes an upper support plate assembly 10 and a lower support plate assembly 11 arranged in a stacked manner. During the production process, the upper support plate assembly 10 and the lower support plate assembly 11 each carry two layers of graphite felt, that is, four layers of graphite felt are produced simultaneously, which significantly improves the production efficiency of the equipment. Moreover, the double-platen support mechanism is used to produce graphite felt in multiple layers separately, so that the upper and lower layers of graphite felt are heated more evenly and the product quality consistency is also better.

[0039] like Figure 6 and Figure 7 As shown, the upper support plate assembly 10 includes a first graphite column 12, a first support block 13, an upper graphite plate 14 and a first graphite baffle 15. The first support block 13 is provided with a mounting circular hole, the first graphite column 12 is inserted into the mounting circular hole of the first support block 13, the upper graphite plate 14 is placed on both sides of the first support block 13, a one-centimeter expansion gap is reserved between the side of the upper graphite plate 14 and the first support block 13, the first graphite baffle 15 and the upper graphite plate 14 are connected by a carbon-carbon screw, and the first graphite baffle 15 located on both sides of the top of the upper graphite plate 14 is used to prevent graphite dust from falling into the furnace during the production process. During the production process, two layers of graphite felt are simultaneously run on the upper graphite plate 14.

[0040] In this embodiment, the lower support plate assembly 11 includes a second graphite column 16, a second support block 18, a lower graphite plate 20 and a second graphite baffle 21. The bottom of the second graphite column 16 is connected to the bottom of the furnace body, a mounting circular hole is provided on the second support block 18, the top of the second graphite column 16 is mounted in the mounting circular hole of the second support block 18, the lower graphite plate 20 is mounted on the second support block 18, and a one-centimeter expansion gap is reserved between the side of the lower graphite plate 20 and the second support block 18. The second graphite baffle 21 and the lower graphite plate 20 are connected by a carbon-carbon screw, and the second graphite baffles 21 located on both sides of the top of the lower graphite plate 20 are used to prevent graphite dust from falling into the furnace during the production process. During the production process, two layers of graphite felt are simultaneously run on the lower graphite plate 20.

[0041] Furthermore, the lower support plate assembly 11 further includes a third graphite column 17 and a third support block 19, wherein the third graphite column 17 is located in the middle of the bottom of the lower graphite plate 20, the bottom of the third graphite column 17 is connected to the bottom of the furnace body, the top of the third graphite column 17 is provided with a third support block 19, and the middle of the lower graphite plate 20 is overlapped on the third support block 19. The third graphite column 17 is used to support the middle of the lower graphite plate 20 to prevent the lower graphite plate 20 from deforming at high temperatures, thereby improving the reliability of the equipment operation.

[0042] like Figure 2 and Figure 3 As shown, the cleaning chamber 2 includes an exhaust hood 22, an air inlet pipe 23, a curtain 24, a first top cover plate 25, a first base 26 and a chamber body 27. The chamber body 27 is fixed by the first base 26, a removable first top cover plate 25 is provided on the top of the chamber body 27, a plurality of curtains 24 are provided inside the chamber body 27 to separate the chamber body 27 into a plurality of cleaning chambers, and an air inlet pipe 23 is provided on the upper part of the first base 26 and extends into the chamber body 27 to deliver inert gas into the cleaning chamber. The exhaust hood 22 is provided on the side of the chamber body 27 to discharge the gas in the cleaning chamber.

[0043] Specifically, the warehouse body 27 is fixed to the first base 26 and the exhaust hood 22 by welding, and the bottom plate of the warehouse body 27 is mirror polished to reduce the friction between the warehouse body 27 and the graphite felt. The exhaust hood 22 is welded and fixed to the warehouse body 27, and is composed of a hood body, a plug valve and a pipeline. The air inlet pipe 23 is connected to the warehouse body 27 through a flange, and is composed of an air pipe, a flange and a blind plate. An exhaust hole is opened on the air pipe for entering nitrogen. The curtain 24 is placed on the support rod inside the warehouse body 27, and is composed of a mounting tube and a fluororubber plate. The first top cover plate 25 is connected to the warehouse body 27 by bolts, and a sealing strip is installed between the cover plate 5 and the warehouse body 27 and the curtain 24 to improve the sealing effect.

[0044] like Figure 3As shown, seven layers of curtains 24 are used in the chamber 27 to form six cleaning chambers. Air is simultaneously introduced into the chambers from top to bottom to form an air seal, which prevents outside air from entering the furnace. In addition, in the cleaning chamber 2 at the entrance of the preheating furnace body 3, the curtain 24 at the last position is made of graphite felt, which can prevent the temperature in the furnace from spreading. In addition, both cleaning chambers 2 are equipped with gas nozzles to measure the kiln pressure, so that the outside air and the atmosphere in the furnace reach a balance point, with low energy consumption and good product quality.

[0045] like Figure 1 As shown, the cooling furnace body includes a pre-cooling furnace body 6, a water bag furnace body 7 and a water-cooled furnace body 8 which are connected in sequence, and the pre-cooling furnace body 6 is connected to the graphitization furnace body 5, and the water-cooled furnace body 8 is connected to the winding mechanism 9. Furthermore, the pre-cooling furnace body 6 is composed of a furnace shell and a thermal insulation material, the furnace body adopts a water-free cooling structure, and a thermocouple is used to measure the temperature in the furnace. The water bag furnace body 7 is composed of a water-cooled furnace body and a thermal insulation material. The furnace shell is cooled by a water-cooling structure all around, and an optical pyrometer is used for temperature measurement and a thermocouple is used for temperature calibration. Each section of the furnace body has two temperature zones. The water-cooled furnace body 8 adopts an open structure, and the inner and outer tanks of the water bag are disconnected and welded from the end face flange. It not only ensures the effective cooling of the product, but also avoids the cracking of the weld at the flange under high temperature conditions due to the influence of high temperature, which causes water to enter the furnace and oxidize the product.

[0046] Specifically, Figure 8 As shown, the water bag furnace body 7 includes an outer end plate 71, an inner end plate 72, a furnace bottom plate 73, a second top cover plate 74, a water bag bottom plate 75, a water bag upper cover plate 76, a second base 77, reinforcing ribs 78 and a water inlet and outlet 79. The outer end plate 71, the inner end plate 72, the second top cover plate 74, the water bag bottom plate 75 and the water bag upper cover plate 76 enclose the main structure of the furnace body, the cavity in the middle of the furnace body forms a furnace, and the graphite felt runs on the furnace bottom plate 73. The cavity between the outer end plate 71 and the inner end plate 72 forms an air cooling structure, the inner end plate 72, the water bag upper cover plate 76 and the second top cover plate 74 enclose a water bag cooling structure, and the cooling water enters the water bag cooling structure through the water inlet and outlet 79 to realize the cooling of the graphite felt in the furnace. At the same time, a water bag cooling structure is formed between the inner end plate 72 and the water bag bottom plate 75 and the furnace bottom plate 73 , and reinforcing ribs 78 are provided in the water bag cooling structure to improve the structural strength of the water bag furnace body 7 .

[0047] like Figure 1 As shown, a smoke exhaust pipe 4 is provided on the top of the graphitization furnace body 5 connected to the preheating furnace body 3. Figure 4 and Figure 5 As shown, the smoke exhaust pipe 4 includes a main pipe 41 and multiple branch pipes 42, and a tar discharge hole 43 is installed below the main pipe 41, one end of the branch pipe 42 is connected to the graphitization furnace body 5, and one end of the branch pipe 42 is connected to the main pipe 41, and the multiple branch pipes 42 are respectively connected to areas with different temperature ranges in the graphitization furnace body 5.

[0048] In this embodiment, the main pipeline 41 is made of stainless steel, which is resistant to high temperatures and increases the waste discharge volume. A tar discharge hole 43 is installed under the main pipeline 41. The branch pipeline 42 is also made of stainless steel. Two groups of four branch pipelines 42 are arranged on the main pipeline 41. Volatile substances can be discharged at different positions within different temperature ranges to prevent unclean volatile substances from affecting product quality.

[0049] Specifically, in the two groups of four branch pipes 42 of the smoke exhaust pipe 4, one group of two exhaust ports is set at the position of 400°C on the graphitization furnace body 5 to exhaust the water vapor generated during the production process, and the other group of two exhaust ports is installed at the position of 1200°C on the graphitization furnace body 5 to exhaust the tar volatiles generated during the production process. In this way, the water vapor and the tar volatiles are discharged separately to prevent the two products from merging and dripping onto the felt in the furnace and affecting the product quality.

[0050] In this embodiment, a graphite heating electrode 51 is provided in the graphitization furnace body 5, and the graphite heating electrode 51 adopts an upper and lower heating structure.

[0051] Furthermore, if Fig. 9 , Fig.10 and Fig.11 As shown, the graphite heating electrode 51 includes an electrode support block 511, a true graphite electrode group 512, a heating bar 513, a graphite bolt 514, a dummy electrode group 515, a support column 516 and a support beam 517. Two heating bars 513 are arranged in the vertical direction to achieve upper and lower heating. The two ends of the heating bar 513 are respectively connected to the electrode support block 511 and the support beam 517. The electrode support block 511 is installed on the true graphite electrode group 512 through the graphite bolt 514. The two support beams 517 arranged in the vertical direction are connected by the support column 516. The two ends of the support beam 517 at the bottom are respectively connected to the dummy electrode group 515 to effectively reduce the stress of the graphite heating electrode 51. By arranging the support beam 517 on the dummy graphite electrode group 515, it can be freely moved to release the thermal expansion of the heating body. The graphite heating electrode 51 is used for heating, so that the furnace temperature can be quickly raised to 2200°C. In addition, the heating is carried out in two parts, the upper and lower parts, so that the felt body is heated more evenly.

[0052] In this embodiment, the carbon felt is first passed through the double-layer tunnel in the furnace body and fixed on the winding mechanism 9 at the rear end of the furnace body, and then the unwinding mechanism 1 at the front end of the furnace body is actively unwound and the winding mechanism 9 at the rear end of the furnace body drives the felt body to slide in the furnace body tunnel. The felt body passes through the preheating furnace body 3, multiple graphitization furnace bodies 5 at 2200°C, the precooling furnace body 6, the water-wrapped furnace body 7 and the water-cooling furnace body 8, so that the graphite felt reaches the furnace outlet temperature of 80°C, and is finally collected by the winding mechanism 9, that is, the entire graphitization process is completed.

[0053] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A high temperature continuous graphitization equipment supported by double platens, characterized in that: The invention comprises an unwinding mechanism (1), a preheating furnace body (3), a plurality of graphitizing furnace bodies (5) arranged in parallel, a cooling furnace body and a winding mechanism (9) arranged in sequence, so as to realize continuous production of graphitized felt; a cleaning chamber (2) is arranged at the entrance of the preheating furnace body (3) and at the exit of the cooling furnace body; a double-platen support mechanism is arranged inside the cleaning chamber (2), the preheating furnace body (3), the graphitizing furnace body (5) and the cooling furnace body; the double-platen support mechanism comprises an upper support plate assembly (10) and a lower support plate assembly (11) arranged in a stacked manner; during the production process, the upper support plate assembly (10) and the lower support plate assembly (11) each carry two layers of graphite felt.

2. The high-temperature continuous graphitization equipment supported by double platens according to claim 1, characterized in that: The upper support plate assembly (10) comprises a first graphite column (12), a first support block (13), an upper graphite plate (14) and a first graphite baffle (15); the bottom of the first graphite column (12) is connected to the lower support plate assembly (11), the top of the first graphite column (12) is provided with a first support block (13), the two sides of the upper graphite plate (14) are respectively overlapped on the corresponding first support blocks (13), and the side of the upper graphite plate (14) is provided with a first graphite baffle (15); during the production process, two layers of graphite felt are simultaneously run on the upper graphite plate (14).

3. The high temperature continuous graphitization equipment supported by double platens according to claim 2, characterized in that: The lower support plate assembly (11) comprises a second graphite column (16), a second support block (18), a lower graphite plate (20) and a second graphite baffle (21); the bottom of the second graphite column (16) is connected to the bottom of the furnace body, the top of the second graphite column (16) is provided with a second support block (18), the two sides of the lower graphite plate (20) are respectively overlapped on the corresponding second support blocks (18), and the side of the lower graphite plate (20) is provided with a second graphite baffle (21), and the bottom of the first graphite column (12) is connected to the second graphite baffle (21); during the production process, two layers of graphite felt are simultaneously run on the lower graphite plate (20).

4. The high temperature continuous graphitization equipment supported by double platens according to claim 3 is characterized in that: The lower support plate assembly (11) further comprises a third graphite column (17) and a third support block (19); the third graphite column (17) is located in the middle of the bottom of the lower graphite plate (20); the bottom of the third graphite column (17) is connected to the bottom of the furnace body; the top of the third graphite column (17) is provided with a third support block (19); the middle of the lower graphite plate (20) is overlapped on the third support block (19).

5. The high temperature continuous graphitization equipment supported by double platens according to claim 4, characterized in that: A one-centimeter expansion gap is reserved between the side edge of the upper graphite plate (14) and the first support block (13); and a one-centimeter expansion gap is reserved between the side edge of the lower graphite plate (20) and the second support block (18).

6. The high temperature continuous graphitization equipment supported by double platens according to any one of claims 1 to 5, characterized in that: The cleaning chamber (2) comprises an exhaust hood (22), an air inlet pipe (23), a curtain (24), a first top cover plate (25), a first base (26) and a chamber body (27); the chamber body (27) is installed and fixed via the first base (26); a detachable first top cover plate (25) is provided on the top of the chamber body (27); a plurality of curtains (24) are provided inside the chamber body (27) to achieve isolation of the interior of the chamber body (27) into a plurality of cleaning chambers; the air inlet pipe (23) is provided on the upper part of the first base (26) and extends into the chamber body (27) to achieve delivery of inert gas into the cleaning chamber; the exhaust hood (22) is provided on the side of the chamber body (27) to achieve exhaust of gas in the cleaning chamber.

7. The high temperature continuous graphitization equipment supported by double platens according to claim 6, characterized in that: The bottom plate of the bin body (27) is mirror-polished.

8. The high temperature continuous graphitization equipment supported by double platens according to any one of claims 1 to 5, characterized in that: The cooling furnace body comprises a precooling furnace body (6), a water bag furnace body (7) and a water cooling furnace body (8) which are connected in sequence, and the precooling furnace body (6) is connected to the graphitization furnace body (5), and the water cooling furnace body (8) is connected to the winding mechanism (9); the precooling furnace body (6) is composed of a furnace shell and a heat-insulating material, the furnace body adopts a water-free cooling structure, and a thermocouple is used to measure the temperature in the furnace; the water bag furnace body (7) is composed of a water-cooled furnace body and a heat-insulating material, the furnace shell is surrounded by a water cooling structure for cooling, and an optical pyrometer is used for temperature measurement and a thermocouple is used for temperature calibration; the water cooling furnace body (8) adopts an open structure, and the inner and outer tanks of the water bag are disconnected and welded with the end face flange.

9. The high temperature continuous graphitization equipment supported by double platens according to any one of claims 1 to 5, characterized in that: A smoke exhaust pipe (4) is provided on the top of a graphitization furnace body (5) connected to a preheating furnace body (3), the smoke exhaust pipe (4) comprising a main pipe (41) and a plurality of branch pipes (42), and a tar exhaust hole (43) is installed below the main pipe (41), one end of the branch pipe (42) is connected to the graphitization furnace body (5), and one end of the branch pipe (42) is connected to the main pipe (41), and the plurality of branch pipes (42) are respectively connected to areas of different temperature ranges in the graphitization furnace body (5).

10. The high temperature continuous graphitization equipment supported by double platens according to any one of claims 1 to 5, characterized in that: A graphite heating electrode (51) is provided in the graphitization furnace body (5), and the graphite heating electrode (51) adopts an upper and lower heating structure.

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