Isostatic graphite baking device and method

Abstract

The application relates to the field of baking furnaces, in particular to an isostatic pressing graphite baking device and method, which comprises a baking furnace, the baking furnace is limited by a baking assembly for pressure baking of isostatic pressing graphite; through mutual cooperation between a sliding baffle, a connecting sleeve, an elastic piece, a guide sliding rod and a pressing spring, high-temperature gas expanded in a pressure chamber is gradually introduced into a containing cavity, heat exchange effect of gas between the pressure chamber and the containing cavity is caused, pressure rising in the pressure chamber is buffered, direct pressure relief is avoided, great disturbance to a temperature and pressure environment in the pressure chamber is avoided, and the finished product yield of baked isostatic pressing graphite is improved.

Description

Technical Field

[0001] The present invention relates to the field of baking furnaces, and in particular to an isostatic graphite baking device and method. Background Art

[0002] With the development of industrial technology, the demand for high-quality graphite materials continues to increase. Due to its high purity, high density, and high strength, isostatically pressed graphite is widely used in nuclear energy, metallurgy, chemical industry, electronics, aerospace and other fields. Isostatically pressed graphite is generally calcined under high pressure to ensure that the graphite material is stable and does not deform at high temperatures, resulting in a uniform product.

[0003] With the advancement of science and technology, technical personnel in related fields have also optimized the technical means for roasting isostatic graphite. In order to make a more accurate comparison, for example, Chinese patent publication number CN115854713A discloses a pressurized roasting furnace for preparing isostatic graphite, including a reaction chamber, a feeding port, a reset mechanism, a synchronous jacking assembly, two first air release mechanisms and two tightening mechanisms; when in use, the high pressure generated by the high temperature in the reactor is buffered by sliding the top plate. When the buffering reaches the limit, the first air release mechanism will start to release the gas in the reactor, so that the isostatic graphite raw materials in the reactor can continue to be roasted under the action of high temperature to avoid furnace explosion. A number of air release pipes are also used to slightly release the pressure of the gas in the furnace to avoid excessive pressure changes and damage to the isostatic graphite during processing.

[0004] However, when the above-mentioned prior art is used to roast isostatic graphite, the following problems still exist:

[0005] The above-mentioned device buffers the high pressure generated by high temperature in the reactor by sliding the top plate. When the buffering reaches the limit, the first degassing mechanism will be activated to release the gas in the reactor, so that the isostatically pressed graphite raw materials in the reactor can continue to be roasted under the action of high temperature. The gas in the furnace is also slightly depressurized through a number of degassing pipes. That is, the above-mentioned device reduces and alleviates the high-pressure environment in the reactor by discharging the high-temperature gas in the reactor. In actual use, after the gas in the reactor is heated to a higher temperature, when the high-temperature gas is discharged, the discharged high-temperature gas molecules will take away part of the heat in the reactor, causing the heat in the reactor to be lost and generate temperature fluctuations. The high-temperature gas discharged from the reactor will also lead to a reduction in the mass of the gas in the reactor, causing pressure fluctuations in the reactor.

[0006] Therefore, based on the above-stated viewpoint, there is still room for optimization of the existing technical means for roasting isostatically pressed graphite. Summary of the Invention

[0007] In order to solve the above problems, the present invention provides an isostatic graphite roasting device, including a roasting furnace, wherein a roasting component for pressurizing and roasting the isostatic graphite is limited in the roasting furnace, and the roasting component includes:

[0008] The ring plate is installed and the ring-shaped structure is limited in the roasting furnace.

[0009] The pressure chamber is limited to the inner edge of the mounting ring plate and is set at a distance from the inner wall of the roasting furnace.

[0010] The sliding baffle is limited in the pressure chamber to close the pressure chamber. The sliding baffle is connected to the roasting furnace through a regulator and is driven by the regulator to slide to buffer and adjust the pressure in the pressure chamber.

[0011] Preferably, the regulator includes a horizontal panel located on the upper side of the pressure chamber arranged in the roasting furnace, and a connecting column and an elastic member are commonly provided between the sliding baffle and the horizontal panel. The connecting column is limited and pressed against the sliding baffle by the elastic member, and a blocking ring plate is limited in the pressure chamber and is attached to the lower side of the sliding baffle.

[0012] Preferably, the sliding baffle is further provided with a plurality of connecting sleeves circumferentially with the connecting column as the axis, the connecting sleeves are connected to the mounting ring plate limiter, and a plurality of air leakage holes are evenly opened on the connecting sleeves in the circumferential and axial directions.

[0013] Preferably, the apertures of the plurality of air leakage holes on the same axis are gradually increased from bottom to top.

[0014] Preferably, a plurality of connecting guide rods are provided on the blocking ring plate, and the connecting guide rods pass through the blocking ring plate upwards and are connected to the horizontal panel limiter.

[0015] Preferably, a receiving cavity is formed between the pressure chamber, the roasting furnace and the horizontal panel, and a plurality of through holes are formed on the mounting ring plate to connect the connecting sleeve with the receiving cavity.

[0016] Preferably, the connecting sleeve is hollow inside and is formed with a downward opening connected to the pressure chamber, and a sealing block is abutted inside the connecting sleeve.

[0017] Preferably, the sealing block is connected to a guide slide rod passing through the connecting sleeve and the horizontal panel, the guide slide rod is connected to a limit block affixed to the connecting sleeve, and the guide slide rod is provided with a pressure spring located between the limit block and the horizontal panel.

[0018] Preferably, the elastic force of the elastic member is greater than the elastic force of the pressure spring.

[0019] In addition, the present invention also provides an isostatic graphite roasting method, comprising the following steps:

[0020] S1: The isostatically pressed graphite raw material is placed in a closed roasting furnace for roasting. As the temperature rises, the movement of gas molecules in the furnace intensifies, causing the gas pressure to rise, forming a high-temperature and high-pressure roasting environment.

[0021] S2: When the air pressure in the pressure chamber rises to a certain level, the sliding baffle overcomes the pressing force of the elastic member under the action of the air pressure and slides upward, so that the several air vents on the connecting sleeve are connected with the interior of the pressure chamber, thereby buffering the expanding gas in the pressure chamber.

[0022] The upward movement of the sliding baffle causes the internal space of the pressure chamber to increase, and the gas volume increases, thereby achieving pressure buffering;

[0023] S3: The expanded gas in the pressure chamber is introduced into the containing chamber through the vent hole and gradually escapes into the containing chamber. Heat exchange occurs between the gas in the pressure chamber and the containing chamber to avoid large temperature and pressure fluctuations caused by the pressure relief process.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The present invention gradually introduces the high-temperature gas expanded in the pressure chamber into the accommodating chamber through the mutual cooperation between the sliding baffle, the connecting sleeve, the elastic member, the guide slide rod and the pressure spring, so that the gas between the pressure chamber and the accommodating chamber produces a heat exchange effect. While buffering the rising pressure in the pressure chamber, it avoids direct pressure relief causing a large disturbance to the temperature and pressure environment in the pressure chamber, thereby improving the finished product yield of roasted isostatically pressed graphite.

[0026] 2. The present invention uses the mutual cooperation between the sliding baffle, connecting column, elastic member, driving gear plate and driven gear plate to drive the sliding baffle downward after the high-pressure gas in the pressure chamber further expands, so as to compress the high-temperature and high-pressure area in the pressure chamber, while driving the high-temperature and high-pressure gas in the pressure chamber to quickly discharge, while maintaining the stability of the temperature and pressure in the pressure chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and examples.

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a structural schematic diagram of the roasting assembly of the present invention.

[0030] Figure 3 It is a structural schematic diagram of the pressure chamber of the present invention.

[0031] Figure 4 It is a structural schematic diagram of the regulator of the present invention.

[0032] Figure 5This invention Figure 4 A magnified view of center.

[0033] Figure 6 It is a structural schematic diagram of the connecting sleeve of the present invention.

[0034] Figure 7 It is a structural schematic diagram of the sliding frame of the present invention.

[0035] Figure 8 This invention Figure 7 Magnified view of B.

[0036] Figure 9 This invention Figure 7 Enlarged view of C in the middle.

[0037] In the figure, 1. roasting furnace; 10. feeding port; 2. roasting assembly; 20. mounting ring plate; 200. through hole; 21. pressure chamber; 22. sliding baffle; 23. regulator; 230. horizontal panel; 231. connecting column; 232. elastic member; 233. blocking ring plate; 234. connecting sleeve; 235. vent hole; 24. connecting guide rod; 25. accommodating chamber; 26. sealing block; 260. guide slide; 261. limit block; 262. pressure spring; 27. air guide port; 270. limit slider; 271. sliding frame; 272. driven gear plate; 273. driven gear; 274. driving gear plate; 28. cover; 29. ​​stop block; 290. tightening screw. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1 To the attached Figure 9 The embodiments of the present invention are described in detail.

[0039] The embodiment of the present application discloses an isostatic graphite roasting device and method, which is mainly used in the process of roasting and preparing isostatic graphite, and technically achieves the effect of pressurized roasting treatment of isostatic graphite; in particular, during the pressurized roasting process, the expansion gas in the pressure chamber is gradually released and introduced into the accommodating chamber through the mutual cooperation between the provided connecting sleeve, the guide slide rod and the pressure spring, so as to avoid the problem that a large amount of gas released at one time forms turbulence and affects the stability of the high-temperature and high-pressure environment in the pressure chamber; and, the present device also drives the sliding baffle downward after the high-pressure gas in the pressure chamber further expands through the mutual cooperation between the sliding baffle, the connecting column, the elastic part, the driving tooth plate and the driven tooth plate, so as to compress the high-temperature and high-pressure area in the pressure chamber, and maintain the stability of the temperature and pressure in the pressure chamber while driving the high-temperature and high-pressure gas in the pressure chamber to discharge rapidly.

[0040] Example 1: Reference Figure 1 and Figure 2As shown, an isostatic graphite roasting device includes a roasting furnace 1. The roasting furnace 1 is formed with a feeding port 10 for workers to feed isostatic graphite raw materials into the roasting furnace 1. The feeding port 10 is normally closed during the operation of the roasting furnace 1. A roasting assembly 2 for pressure roasting the isostatic graphite is limited in the roasting furnace 1. During use, after the workers feed the isostatic graphite raw materials into the roasting furnace 1, as the temperature in the roasting furnace 1 increases, the temperature of the gas molecules in the roasting furnace 1 also increases, thereby accelerating the molecular motion and forming a high-temperature and high-pressure roasting environment to complete the pressure roasting treatment effect of the isostatic graphite. During this process, as the temperature in the roasting furnace 1 continues to rise, the gas pressure in the furnace also increases. After the gas pressure in the roasting furnace 1 exceeds the pressure, the buffering and regulation treatment of the roasting assembly 2 drives the overall gas pressure in the roasting furnace 1 to drop to avoid safety accidents such as furnace explosion.

[0041] Reference Figure 2 and Figure 3 As shown, a calcination assembly 2 for pressurized calcination of isostatically pressed graphite is shown; specifically, the calcination assembly 2 includes:

[0042] The ring plate 20 is installed to be in a ring-shaped structure and is confined within the roasting furnace 1 .

[0043] The pressure chamber 21 is limited to the inner edge of the mounting ring plate 20 and is set at a distance from the inner wall of the roasting furnace 1. The feeding port 10 is set on the roasting furnace 1 and the pressure chamber 21 at the same time. The pressure chamber 21 has a built-in heating component such as an electric heating plate, etc. The pressure chamber 21 is preferably set with a heat-insulating material.

[0044] The sliding baffle 22 is limited in the pressure chamber 21 to close the pressure chamber 21 . The sliding baffle 22 is connected to the roasting furnace 1 through the regulator 23 and is driven by the regulator 23 to slide to buffer and adjust the pressure in the pressure chamber 21 .

[0045] During use, in the initial state, the regulator 23 drives the sliding baffle 22 to move down a distance to close the pressure chamber 21. After the temperature and pressure of the pressure chamber 21 are increased to a certain extent, the sliding baffle 22 is driven to slide upward along the inner wall of the pressure chamber 21. After the sliding baffle 22 moves upward relative to the initial state of the pressure chamber 21, the volume of the pressure chamber 21 for storing high-temperature and high-pressure gas expands relative to the initial state. Through the extension of the internal space of the pressure chamber 21, the high-temperature and high-pressure environment therein is buffered, and at the same time, the problem of heat loss caused by the release of high-temperature gas is avoided, and the problem of large temperature fluctuations during the pressure relief process is effectively avoided.

[0046] Reference Figures 2 to 4As shown, the regulator 23 is used to drive the sliding baffle 22 to perform sliding adjustment; specifically, the regulator 23 includes a horizontal panel 230 arranged in the roasting furnace 1 and located on the upper side of the pressure chamber 21, and a connecting column 231 and an elastic member 232 are commonly provided between the sliding baffle 22 and the horizontal panel 230. The connecting column 231 is limited and pressed against the sliding baffle 22 by the elastic member 232, and a blocking ring plate 233 is provided in the pressure chamber 21 to fit the lower side of the sliding baffle 22.

[0047] During use, the pre-tightening of the elastic member 232 drives the connecting column 231 to be pre-tightened against the sliding baffle 22, so that the connecting column 231 and the sliding baffle 22 as a whole tend to slide downward all the time. At this time, the blocking ring plate 233 on the lower side of the sliding baffle 22 limits the downward trend of the connecting column 231 and the sliding baffle 22 as a whole, thereby achieving the initial sealing effect of the pressure chamber 21, and at the same time avoiding the problem that the sliding baffle 22 is pushed upward by the increased air pressure as the temperature and air pressure in the pressure chamber 21 increase, thereby ensuring that the temperature and pressure in the pressure chamber 21 remain stable.

[0048] When the pressure between the pressure chamber 21 and the sliding baffle 22 gradually becomes higher than the downward pressure of the elastic member 232, the increased air pressure pushes the sliding baffle 22 and the connecting column 231 to slide upward as a whole, and further drives the elastic member 232 to be compressed. As the sliding baffle 22 moves upward, the distance between the sliding baffle 22 and the bottom wall of the pressure chamber 21 also gradually increases, that is, the space in the pressure chamber 21 gradually increases, thereby achieving the effect of alleviating the higher pressure in the pressure chamber 21, and avoiding the turbulence caused by the large amount of high-temperature gas leaking out, which causes the problem of disturbing the temperature in the pressure chamber 21.

[0049] Further, refer to Figures 3 to 6 As shown, due to the relatively limited volume of the roasting furnace 1, the range of upward movement allowed for the sliding baffle 22 and the connecting column 231 is also limited. Therefore, in order to prevent the problem of furnace explosion caused by the continued increase in air pressure after the upper limit is reached, the sliding baffle 22 is also circumferentially penetrated by a plurality of connecting sleeves 234 with the connecting column 231 as the axis. The connecting sleeves 234 are connected to the mounting ring plate 20 in a limited manner. The connecting sleeves 234 are uniformly provided with a plurality of vent holes 235 in the circumferential and axial directions. In the initial state, the sliding baffle 22 is located entirely below all the vent holes 235 on the connecting sleeve 234. That is, initially, the interior of the pressure chamber 21 is not connected to the interior of the roasting furnace 1 through the vent holes 235.

[0050] During use, when the air pressure in the pressure chamber 21 drives the sliding baffle 22 and the connecting column 231 to move upward as a whole, the sliding baffle 22 will move upward along the connecting sleeve 234 and form a relative position sliding between the sliding baffle 22 and the connecting sleeve 234. After the sliding baffle 22 is driven over the bleed hole 235 on the connecting sleeve 234, the high-pressure gas in the pressure chamber 21 will be driven by the high pressure in the pressure chamber 21 and introduced into the roasting furnace 1 through the several bleed holes 235 on the connecting sleeve 234, so as to achieve the effect of further buffering and discharging the pressure in the pressure chamber 21.

[0051] Further, refer to Figure 5 and Figure 6 As shown, the apertures of the several air release holes 235 on the same axis are gradually increased from bottom to top to ensure a smooth pressure relief process and avoid drastic fluctuations in temperature and pressure caused by rapid release of gas. At the same time, the air release holes 235 are gradually changed from bottom to top to match the pressure fluctuations in the pressure chamber 21. When the pressure chamber 21 is in a low-pressure state, the expanded gas is slowly released. When the pressure chamber 21 is in a high-pressure state, the rate of releasing the expanded gas is gradually increased to improve the heat exchange rate between the pressure chamber 21 and the accommodating chamber 25.

[0052] Reference Figure 3 and Figure 4 As shown, a plurality of connecting guide rods 24 are provided on the blocking ring plate 233 . The connecting guide rods 24 pass upward through the blocking ring plate 233 and are connected to the horizontal panel 230 in a limiting manner, so as to limit and guide the sliding of the sliding baffle 22 .

[0053] Reference Figures 2 to 4 As shown, a accommodating chamber 25 is formed between the pressure chamber 21, the roasting furnace 1 and the horizontal panel 230. When in use, since the pressure chamber 21 is limited in the roasting furnace 1 by the mounting ring plate 20, the gas discharged from the pressure chamber 21 is difficult to penetrate downward due to the obstruction of the mounting ring plate 20. Therefore, a plurality of through holes 200 are formed on the mounting ring plate 20 to connect the connecting sleeve 234 with the accommodating chamber 25, so that the gas discharged from the pressure chamber 21 can penetrate downward through the plurality of through holes 200 on the mounting ring plate 20, thereby increasing the space of the accommodating chamber 25, so as to accumulate more gas discharged from the pressure chamber 21, so as to enhance the buffering effect of the pressure in the pressure chamber 21.

[0054] Reference Figures 4 to 6As shown, to avoid large temperature and pressure fluctuations during the pressure relief process of the pressure chamber 21, the connecting sleeve 234 is hollow and has a downward opening formed therein to communicate with the pressure chamber 21. A sealing block 26 slides and abuts against the connecting sleeve 234. In its initial state, the sealing block 26 is also located below all the bleed holes 235 on the connected connecting sleeve 234. During use, when the temperature and pressure in the pressure chamber 21 rise, the expanding gas inside enters the connecting sleeve 234 through the opening, driving the sealing block 26 to move upward within the connecting sleeve 234. After the sealing block 26 moves upward and passes over some of the bleed holes 235 on the connecting sleeve 234, the gas in the pressure chamber 21 is introduced into the accommodating chamber 25 through the bleed holes 235, thereby achieving the effect of pre-releasing and alleviating the high pressure in the pressure chamber 21.

[0055] It should be noted that since the pressure chamber 21 is made of insulating material, during the process of heating and pressurizing the pressure chamber 21, the temperature and pressure on both sides of the pressure chamber 21 (that is, between the inside of the pressure chamber 21 and the accommodating chamber 25) will form a temperature difference and a pressure difference, and the high-temperature gas in the pressure chamber 21 will be introduced into the accommodating chamber 25 through the vent hole 235. At this time, according to the characteristic that heat is always spontaneously transferred from the high-temperature area to the low-temperature area, it can be seen that the high-temperature gas discharged from the pressure chamber 21 will produce a heat transfer effect with the lower-temperature gas in the accommodating chamber 25, causing the gas temperature in the accommodating chamber 25 to rise, and the gas temperature discharged from the pressure chamber 21 to drop a part until the heat of the two is the same.

[0056] During this process, the pressure chamber 21 and the accommodating chamber 25 will always remain in a state of interconnection. The high-temperature gas discharged from the pressure chamber 21 transfers heat to the lower-temperature gas in the accommodating chamber 25, thereby buffering the high-temperature and high-pressure state in the pressure chamber 21. At the same time, the gradually heated gas in the accommodating chamber 25 effectively delays the problem of large-scale loss of heat in the pressure chamber 21 with the high-temperature gas, thereby avoiding large fluctuations in temperature and air pressure in the pressure chamber 21.

[0057] Further, refer to Figures 4 to 6 As shown, in order to avoid the problem of the sealing block 26 being driven to slide and release pressure as soon as the temperature and pressure in the pressure chamber 21 rise, a guide slide 260 is connected to the sealing block 26, which passes through the connecting sleeve 234 and the horizontal panel 230. The guide slide 260 is connected to a limit block 261 that fits on the connecting sleeve 234. The guide slide 260 is provided with a pressure spring 262 located between the limit block 261 and the horizontal panel 230.

[0058] Reference Figures 4 to 6As shown, the elastic force of the elastic member 232 is greater than the elastic force of the pressure spring 262. During use, the expanding gas in the pressure chamber 21 will continuously drive the sealing block 26 in the connecting sleeve 234 to move upward, and the upward movement of the sealing block 26 will simultaneously drive the connected guide slide 260 and the limit block 261 to move upward, and drive the pressure spring 262 on the connected guide slide 260 to be compressed. That is, in the initial process, the upward driving force of the sealing block 26 caused by the rising air pressure in the pressure chamber 21 and the downward elastic restoring force of the pressure spring 262 form an antagonistic relationship, thereby avoiding the problem of driving the sealing block 26 to slide and release pressure as soon as the temperature and pressure in the pressure chamber 21 rise.

[0059] Subsequently, as the temperature and air pressure in the pressure chamber 21 continue to rise, the air pressure drives the sealing block 26 to move upward, which gradually overcomes the elastic restoring force of the pressure spring 262, causing the sealing block 26 to move upward gradually until it passes over the air vent 235 to connect the pressure chamber 21 and the accommodating chamber 25. At the same time, the pressure spring 262 is gradually compressed. After the temperature and air pressure in the pressure chamber 21 rise to a certain level, the air pressure in the pressure chamber 21 drives the sliding baffle 22 to move upward, which overcomes the clamping force of the elastic member 232. Then, the sliding baffle 22 begins to move upward along the connecting sleeve 234 and the connecting guide rod 24, extending the internal space of the pressure chamber 21 to further alleviate the rising temperature and air pressure in the pressure chamber 21.

[0060] Example 2: Reference Figures 7 to 9 As shown, based on Example 1, it can be seen from the above that after the temperature and pressure in the pressure chamber 21 are increased, the gas inside it will continuously overflow into the accommodating chamber 25 for accumulation. After the temperature and pressure of the gas in the accommodating chamber 25 and the pressure chamber 21 are gradually balanced, due to the limited overall volume of the roasting furnace 1 and the continuous increase in the temperature of the gas in the pressure chamber 21, the overall temperature and pressure of the gas in the accommodating chamber 25 and the pressure chamber 21 will rise synchronously. At this time, if the high temperature and high pressure environment is not guided and released in time, it is easy to cause a safety accident.

[0061] Therefore, in order to avoid safety accidents, a number of air guide ports 27 are opened on the horizontal panel 230 corresponding to the connecting guide rod 24, and a limiting slider 270 adapted to the air guide port 27 is provided on the connecting guide rod 24. A sliding frame 271 is commonly connected between all the limiting sliders 270, and the sliding frame 271 extends downward with a driven tooth plate 272. The driven tooth plate 272 is engaged with a driven gear 273 limited to the horizontal panel 230. The driven gear 273 is also engaged with a driving tooth plate 274 on the horizontal panel 230 corresponding to the driven tooth plate 272. The driving tooth plate 274 and the driven tooth plate 272 are arranged on both sides of the driven gear 273 and slide relative to each other, and the driving tooth plate 274 corresponds to the connecting column 231; a cover 28 is also connected to the upper end of the roasting furnace 1 to prevent external dust from falling into the roasting furnace 1, and a number of exhaust holes are evenly provided on the cover 28.

[0062] When in use, after the pressure in the accommodating chamber 25 and the pressure chamber 21 increases together, the expanded gas pushes the sliding baffle 22 and the connecting column 231 upward to slide upward, and the connecting column 231 slides upward to drive the elastic member 232 to be further compressed. When the connecting column 231 contacts the driving tooth plate 274, as the connecting column 231 and the sliding baffle 22 move upward as a whole, the connecting column 231 pushes the driving tooth plate 274 to move upward synchronously. After the driving tooth plate 274 moves, it drives the meshing driven gear 273 to rotate, and the driven gear The rotation of 273 drives the meshed driven tooth plate 272 to slide downward. The downward movement of the driven tooth plate 272 synchronously drives the sliding frame 271, the limit slider 270 and the connecting guide rod 24 to move downward synchronously. After the limit slider 270 moves, a relative position sliding effect is formed between the limit slider 270 and the horizontal panel 230, so that the limit slider 270 is staggered with the air guide port 27, so that the high-pressure gas in the accommodating chamber 25 can be discharged from the several exhaust holes on the cover 28, thereby alleviating the high-pressure environment in the roasting furnace 1 and avoiding safety accidents.

[0063] It should be noted that in order to control the sliding range of the limit slider 270, the air guide port 27 on the horizontal panel 230 is arranged in a stage shape. In the initial state, the limit slider 270 is engaged with the air guide port 27 and is restricted by the air guide port 27 and no longer moves upward, thereby forming a sealing effect on the air guide port 27.

[0064] At the same time, in order to maintain the relative position of the conventional initial lower driven gear plate 272 and the driving gear plate 274 to avoid a large-scale leakage of the gas in the accommodating chamber 25 (that is, to avoid the overall downward movement of the sliding frame 271, the limiting slider 270 and the connecting guide rod 24), a stop block 29 located on the upper side of the horizontal panel 230 is provided on the upper limit sleeve of the driving gear plate 274. The stop block 29 slides and fits with the horizontal panel 230 to limit the downward movement of the driving gear plate 274 due to its own gravity.

[0065] Example 3: Reference Figure 7 and Figure 9 As shown, based on Example 1 and Example 2, as an optional implementation, the stop block 29 is slidably sleeved on the driving gear plate 274, and a tightening screw 290 is threaded through the stop block 29 and abuts against the driving gear plate 274. The sliding frame 271 is a telescopic frame (self-locking setting) that allows sliding adjustment in the vertical direction.

[0066] Initially, the relative position between the stop block 29 and the driving tooth plate 274 is adjusted by rotating the tightening screw 290, so as to adjust the distance between the lower end of the driving tooth plate 274 and the connecting column 231, so as to drive the limiting slider 270 to disengage from the corresponding air guide port 27 according to different expansion pressures, thereby completing the pressure relief adjustment of the high-pressure gas between the accommodating chamber 25 and the pressure chamber 21.

[0067] In addition, the present invention also provides an isostatic graphite roasting method, comprising the following steps:

[0068] S1: Isostatically pressed graphite raw material is placed in a closed roasting furnace 1 for roasting. As the temperature rises, the movement of gas molecules in the furnace intensifies, causing the gas pressure to rise, forming a high-temperature and high-pressure roasting environment.

[0069] S2: When the air pressure in the pressure chamber 21 rises to a certain level, the sliding baffle 22 overcomes the pressing force of the elastic member 232 under the action of the air pressure and slides upward, so that the several air vents 235 on the connecting sleeve 234 are connected to the interior of the pressure chamber 21, thereby buffering the expanding gas in the pressure chamber 21.

[0070] The upward movement of the sliding baffle 22 causes the internal space of the pressure chamber 21 to increase, and the gas volume increases, thereby achieving pressure buffering;

[0071] S3: The expanded gas in the pressure chamber 21 is introduced into the accommodating chamber 25 through the vent hole 235 and gradually escapes into the accommodating chamber 25. Heat exchange occurs between the gas in the pressure chamber 21 and the accommodating chamber 25 to avoid large temperature and pressure fluctuations caused by the pressure relief process.

[0072] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An isostatic graphite roasting device, comprising a roasting furnace (1), characterized in that: The roasting furnace (1) has a roasting assembly (2) for pressurized roasting of isostatic graphite, and the roasting assembly (2) includes: A ring plate (20) is installed, which is a ring-shaped structure and is limited in the roasting furnace (1); The pressure chamber (21) is limited to the inner edge of the mounting ring plate (20) and is spaced apart from the inner wall of the roasting furnace (1); a sliding baffle (22) limitedly located in the pressure chamber (21) to close the pressure chamber (21); the sliding baffle (22) is connected to the roasting furnace (1) through the regulator (23) and is driven by the regulator (23) to slide to buffer and adjust the pressure in the pressure chamber (21); The regulator (23) includes a horizontal panel (230) disposed in the roasting furnace (1) and located on the upper side of the pressure chamber (21); a connecting column (231) and an elastic member (232) are provided between the sliding baffle (22) and the horizontal panel (230); the connecting column (231) is limited and pressed against the sliding baffle (22) by the elastic member (232); and a blocking ring plate (233) is provided in the pressure chamber (21) and is attached to the lower side of the sliding baffle (22); The sliding baffle (22) is also provided with a plurality of connecting sleeves (234) circumferentially with the connecting column (231) as the axis, the connecting sleeves (234) are connected to the mounting ring plate (20) in a limiting manner, and a plurality of vent holes (235) are uniformly opened on the connecting sleeve (234) in the circumferential and axial directions; The apertures of the plurality of air leakage holes (235) on the same axis are gradually increased from bottom to top; A plurality of connecting guide rods (24) are provided on the blocking ring plate (233). The connecting guide rods (24) pass through the blocking ring plate (233) upwards and are connected to the horizontal panel (230) in a limiting manner.

2. The isostatic graphite roasting device according to claim 1, characterized in that: A receiving cavity (25) is formed between the pressure chamber (21), the roasting furnace (1) and the horizontal panel (230), and a plurality of through holes (200) are formed on the mounting ring plate (20) to connect the connecting sleeve (234) with the receiving cavity (25).

3. The isostatic graphite roasting device according to claim 1, characterized in that: The connecting sleeve (234) is hollow inside and has a downward opening connected to the pressure chamber (21). A sealing block (26) is abutted against the inside of the connecting sleeve (234).

4. The isostatic graphite roasting device according to claim 3, characterized in that: The sealing block (26) is connected to a guide slide (260) passing through the connecting sleeve (234) and the horizontal panel (230), the guide slide (260) is connected to a limit block (261) affixed to the connecting sleeve (234), and the guide slide (260) is provided with a pressure spring (262) located between the limit block (261) and the horizontal panel (230).

5. The isostatic graphite roasting device according to claim 4, characterized in that: The elastic force of the elastic member (232) is greater than the elastic force of the pressure spring (262).

6. An isostatic graphite roasting method, using an isostatic graphite roasting device according to any one of claims 1 to 5, characterized in that: The roasting method comprises the following steps: S1: isostatically pressed graphite raw materials are placed in a closed roasting furnace (1) for roasting. As the temperature rises, the movement of gas molecules in the furnace intensifies, causing the gas pressure to rise, thus forming a high-temperature and high-pressure roasting environment; S2: When the air pressure in the pressure chamber (21) rises to a certain level, the sliding baffle (22) overcomes the pressing force of the elastic member (232) and slides upward under the action of the air pressure, so that the plurality of air release holes (235) on the connecting sleeve (234) are connected to the interior of the pressure chamber (21), thereby buffering the expanding gas in the pressure chamber (21); the upward movement of the sliding baffle (22) causes the internal space of the pressure chamber (21) to increase, and the volume of the gas increases, thereby achieving pressure buffering; S3: The expanded gas in the pressure chamber (21) is introduced into the accommodating chamber (25) through the air release hole (235), and gradually escapes into the accommodating chamber (25). Heat exchange occurs between the gas in the pressure chamber (21) and the accommodating chamber (25), thereby avoiding large temperature and pressure fluctuations caused by the pressure relief process.

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