High-heat-insulation foamy carbon drying method and device

Abstract

The invention discloses a high-heat-insulation foamy carbon drying method and device, and relates to the technical field of foamy carbon drying, the high-heat-insulation foamy carbon drying device comprises a drying furnace body with furnace covers connected to the two ends in a sealed mode, a heater is coaxially arranged in the drying furnace body, and the outer side of the heater is sleeved with a limiting sleeve; the limiting sleeve is sleeved with a moving part capable of moving along the axis of the limiting sleeve in a reciprocating mode, a spiral groove is formed in the limiting sleeve, the moving part is connected with the spiral groove in a matched and inserted mode, the moving part comprises a rotating ring arranged on the limiting sleeve in a sleeving and covering mode, and the moving part rotates around the spiral groove while moving on the limiting sleeve. Through cooperation of the moving part and the spiral groove, the multiple clamping parts are driven to rotate while moving is achieved, so that materials to be dried are driven to rotate around a heat source, the materials make uniform contact with the heat source, the drying uniformity is improved, and the situation that the materials are locally heated too fast, residual moisture is gasified too fast or matter is decomposed to generate gas is prevented; and therefore, the foamy carbon forming quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foam carbon drying, and in particular to a high-insulation foam carbon drying method and device. Background Art

[0002] Carbon foam is a new type of carbonaceous material, a three-dimensional mesh lightweight porous material mainly composed of carbon elements. Carbon foam is a new type of material with excellent performance and wide application. In addition to the conventional properties of carbon materials, carbon foam also has the characteristics of low density, high strength, thermal shock resistance, easy processing, and good physical and chemical properties such as electrical conductivity, thermal conductivity, and wave absorption.

[0003] In the process of preparing foamed carbon, the material needs to be preheated to make it foam and expand, and it also needs to be dried and carbonized to prepare foamed carbon. Most of the existing drying equipment has the heating source equipment inside to improve the heating efficiency. In the heating and drying process, the material is mostly in a static state in the furnace, and the material close to the heat source end is heated the fastest, resulting in uneven heating of the material, easy local overheating, residual moisture vaporization too quickly, or material decomposition to produce gas, which can easily cause a large number of pores to be destroyed. Summary of the invention

[0004] The purpose of the present invention is to provide a highly thermally insulating foam carbon drying method and device, which has the advantages of driving the material to be dried to rotate around a heat source, achieving uniform contact between the material and the heat source, improving the uniformity of drying, preventing the material from being heated too quickly locally, residual moisture from vaporizing too quickly, or the material from decomposing to produce gas, resulting in a large number of pores being destroyed, thereby improving the quality of foam carbon molding.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a highly heat-insulating foam carbon drying device, comprising a drying furnace body with furnace covers sealed at both ends, and a heater coaxially arranged in the drying furnace body, a limiting sleeve is sleeved on the outer side of the heater, a moving part that can reciprocate along its axis is sleeved on the limiting sleeve, a spiral groove is arranged on the limiting sleeve, the moving part is matched with the spiral groove and plugged and connected, the moving part comprises a rotating ring sleeved on the limiting sleeve, and the moving part rotates around the spiral groove while moving on the limiting sleeve; The movable part is provided with a plurality of clamping parts for placing materials, and the clamping parts are hinged to the movable part through bearing parts. The clamping parts can rotate around the hinged end of the bearing parts while following the rotation and revolving around the limiting sleeve, so that the clamping parts are always in a vertical state.

[0006] Furthermore, the moving part also includes a fixed ring, an annular plate and a driving part. The outer wall of the annular plate is provided with two blocks. The inner wall of the drying furnace body is provided with a slide groove for limiting the sliding of the two blocks. The driving part is connected to the annular plate and drives the annular plate to move. The fixed ring is connected to the annular plate, and one end of the fixed ring is connected to the rotating ring through a bearing.

[0007] Furthermore, the fixed ring and the rotating ring are sleeved on the limiting sleeve, and a guide rod is arranged on the inner wall of the rotating ring, and the guide rod is inserted in the spiral groove.

[0008] Furthermore, two rotating rings are provided, and the outer surfaces of the two rotating rings are provided with a plurality of mounting support plates in a circular array, and the mounting support plates on the two rotating rings correspond one to one along the axis direction of the rotating ring.

[0009] Furthermore, two ends of the clamping member are respectively hinged to the middle of two mounting support plates aligned on the two rotating rings.

[0010] Furthermore, the clamping member includes a supporting bracket, a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are symmetrically arranged on the supporting bracket, and the first clamping plate and the second clamping plate are connected to the supporting bracket through a spring and a limiting rod.

[0011] Furthermore, the outer side of the fixed ring is respectively connected to the first half ring and the second half ring through two support plates, a reducer is installed on the mounting support plate, the output shaft at one end of the reducer is sleeved with a driving gear, the inner wall of the first half ring is provided with an inner arc-shaped rack, and the outer wall of the second half ring is provided with an outer arc-shaped rack, the driving gear is intermittently meshed with the inner arc-shaped rack and the outer arc-shaped rack respectively, and the shaft on one side of the clamping member is connected to the output shaft at the other end of the reducer.

[0012] A method for drying highly heat-insulating foamed carbon, using the above-mentioned drying device for drying, comprises the following steps: S1: mixing the carbon source powder and the water containing the pore-forming agent into a solid-liquid mixed state, and placing the solid-liquid mixed material into a placing container, and then placing the container into a drying furnace for preheating; S2: Raise the temperature inside the drying furnace to 180-350℃, preheat the shaped materials for 10-120min, and discharge the moisture in the materials; S3: After preheating, ensure the sealing state of the drying furnace body, adjust the drying furnace body to a vacuum state, observe the internal situation, and fill the drying furnace body with nitrogen or inert gas; S4: under vacuum conditions, nitrogen or inert gas protection, the temperature inside the drying furnace is raised to 1000-2000° C., the material is carbonized for 1-60 min, and then cooled under vacuum, nitrogen or inert gas protection to obtain the foamed carbon.

[0013] Furthermore, the carbon source powder is any one or more of flour, corn flour, glutinous rice flour or rice flour, the amount of the pore-forming agent is 1-180 g / kg of carbon source powder, the pore-forming agent is any one or more of a biological fungus pore-forming agent, an organic pore-forming agent or an inorganic compound pore-forming agent, and when the pore-forming agent contains a biological fungus pore-forming agent or an organic pore-forming agent, before stirring into a solid-liquid mixed state, the temperature is controlled at 0-38°C, and after the mixed state is formed, it is allowed to ferment at 40-42°C for 0.5-3 hours.

[0014] Furthermore, the biological bacteria pore-forming agent is one or more of yeast and yogurt; the organic pore-forming agent is one or more of white sugar, honey, milk, alcohol or white wine; the inorganic compound pore-forming agent is one or more of sodium carbonate, calcium carbonate, sodium bicarbonate, calcium bicarbonate, ammonium carbonate, ammonium bicarbonate, potassium carbonate, potassium bicarbonate or magnesium carbonate.

[0015] Technical effects and advantages of the present invention: 1. The clamping member of the present invention is hinged to the moving member through a bearing member. The clamping member can rotate around the hinged end of the bearing member while following the rotation of the limiting sleeve, so that the clamping member is always in a vertical state. Through the cooperation of the moving member and the spiral groove, the movement is achieved while driving a plurality of clamping members to rotate, thereby driving the material to be dried to rotate around the heat source, achieving uniform contact between the material and the heat source, improving the uniformity of drying, preventing the material from being heated too quickly locally, the residual moisture from vaporizing too quickly, or the material from decomposing and producing gas, resulting in a large number of pores being destroyed, thereby improving the quality of foam carbon molding. Under the action of the hinge, the clamping member relies on its own weight to ensure that the cylinder for storing the material is always open in the direction of the opening, so as to avoid the cylinder from tilting due to rotation and causing the material to fall.

[0016] 2. After the driving gear of the present invention rotates around the heater once, the clamping part is driven by the reducer while rotating around the heater once. The clamping part can always adjust its inclination state to ensure that it is always in a vertical state during the rotation process. With the gear limiter, the clamping part will not swing back and forth during the rotation, thereby achieving stable adjustment, avoiding material overflow caused by shaking, and improving the stability of the drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the drying furnace structure of the present invention; Figure 3 For the present invention Figure 2 A magnified image of point A; Figure 4 It is a schematic diagram of the local structure of the moving part of the present invention; Figure 5It is an enlarged view of B of the present invention 4; Figure 6 It is a schematic diagram of the structure of the clamping member of the present invention; Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 8 It is a schematic diagram of the fixing ring structure of the present invention.

[0018] In the figure: 1. Drying furnace body; 11. Heater; 12. Limit sleeve; 121. Spiral groove; 13. Slide groove; 2. Moving part; 21. Fixed ring; 211. First half ring; 2111. Inner arc rack; 212. Second half ring; 2121. Outer arc rack; 22. Rotating ring; 221. Guide rod; 222. Mounting support plate; 2221. Driving gear; 23. Annular plate; 231. Block; 24. Driving part; 3. Clamping part; 31. Bearing part; 32. Support bracket; 33. First clamping plate; 34. Second clamping plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Reference Figure 1 - Figure 6, which is the first embodiment of the present invention, provides a highly heat-insulating foam carbon drying device, including a drying furnace body 1 with furnace covers sealed at both ends, the furnace covers at both ends of the drying furnace body 1 can be opened to realize loading or unloading at one end, or loading at one end and unloading at the other end, and the sealing effect can be ensured even in the closed state, and a heater 11 is coaxially arranged in the drying furnace body 1, and a preheating air outlet is arranged at the upper end of the drying furnace body 1. Since the heating temperature of the heater 11 rises quickly and the temperature is high, it cannot meet the preheating temperature requirement, and a preheating air outlet and a pipeline interconnected with the preheating air outlet are arranged on the drying furnace body 1, and the external heat is received through the preheating air outlet. Source, preheating and drying carbonization can be achieved in the same furnace body, and a ventilation pipe is also arranged at the upper end of the drying furnace body 1, and a plurality of pipes are interconnected with the drying furnace body 1 below the ventilation pipe, one end of the ventilation pipe is connected to the air pump, and one end of the ventilation pipe is connected to nitrogen or inert gas, and electric control valves are arranged at both ends of the ventilation pipe. When it is necessary to evacuate air, the electric control valve on the ventilation pipe at the suction end is opened to realize the vacuum state of the drying furnace body 1. When it is necessary to flush nitrogen or inert gas, the electric control valve on the ventilation pipe at the suction end is closed, and the electric control valve on the ventilation pipe at the suction end of the gas injection end is opened to realize the switching between gas injection and suction. The outer sleeve of the heater 11 is connected to There is a limiting sleeve 12, on which a movable part 2 capable of reciprocating along its axis is sleeved. It should be understood that the heater 11 is conventionally arranged in the middle part of the drying furnace body 1, and the area where the heat energy is maximized during heating is also in the middle section of the furnace, and both ends of the furnace body belong to the preheating zone. When the foamed carbon raw material is in the drying process, it should be moved to the zone where the heat energy of the heater 11 is maximized. During the placement or subsequent removal of the foamed carbon raw material, the clamping part 3 needs to be moved to the furnace mouth of the drying furnace body 1. The limiting sleeve 12 is provided with a spiral groove 121, and the movable part 2 is plugged and connected with the spiral groove 121. Since the heater 11 is heated Heat has a certain thermal energy range. The movable part 2 moves and cooperates with the spiral groove 121 to limit the movement so that the rotating ring 22 rotates around the spiral groove 121, driving the foamed carbon raw material to move into the thermal energy range. The movable part 2 needs to move back and forth and cooperate with the spiral groove 121 to limit the position, so that the foamed carbon raw material can rotate around the heat source in the thermal energy range in the furnace. The limiting sleeve 12 covers the heater 11 inside to avoid the possibility of direct contact between the material and the heat source, and to avoid direct contact between crushed materials or waste and the heat source, which may increase the risk of fire and cause equipment damage. Secondly, the limiting sleeve 12 also exists as a heat conductor to conduct the heat source to the drying furnace body 1.

[0021] The movable member 2 includes a rotating ring 22 sleeved on the limiting sleeve 12. When the movable member 2 moves on the limiting sleeve 12, the rotating ring 2 rotates around the spiral groove 121. A plurality of clamping members 3 for placing materials are arranged on the movable member 2. The clamping member 3 is hinged to the movable member 2 through a bearing member 31. The clamping member 3 can rotate around the hinged end of the bearing member 31 while following the rotating ring 22 to revolve around the limiting sleeve 12, so that the clamping member 3 is always in a vertical state. Through the cooperation of the movable member 2 and the spiral groove 121, the movement is achieved while driving the plurality of clamping members 3 to rotate, thereby driving the material to be dried to rotate around the heat source, achieving uniform contact between the material and the heat source, improving the uniformity of drying, preventing the material from being heated too quickly locally, the residual moisture from vaporizing too quickly, or the material from decomposing and producing gas, resulting in a large number of pores being destroyed, and improving the quality of foam carbon molding. Under the action of the hinge, the clamping member 3 relies on its own weight to ensure that the cylinder for storing the material is always open in the direction to avoid the cylinder tilting due to rotation and causing the material to fall.

[0022] The moving part 2 also includes a fixed ring 21, an annular plate 23 and a driving part 24. The driving part 24 can be a combination of a cylinder or a motor and a screw. Two blocks 231 are provided on the outer wall of the annular plate 23. A slide groove 13 for limiting the sliding of the two blocks 231 is provided on the inner wall of the drying furnace body 1. When the annular plate 23 moves, the driving part 24 is connected to the annular plate 23 and drives the annular plate 23 to move. The fixed ring 21 is connected to the annular plate 23. One end of the fixed ring 21 is connected to the rotating ring 22 through a bearing. The driving part 24 drives the annular plate 23 to move. The blocks 231 at both ends of the annular plate 23 are limited to slide by the slide groove 13, thereby improving the stability of the annular plate 23 when it moves. The movement of the annular plate 23 pushes the fixed ring 21 to move on the limiting sleeve 12.

[0023] The fixed ring 21 and the rotating ring 22 are sleeved on the limiting sleeve 12. A guide rod 221 is arranged on the inner wall of the rotating ring 22. The guide rod 221 is inserted in the spiral groove 121. The movement of the fixed ring 21 drives the rotating ring 22 to move. The rotating ring 22 follows the guide rod 221 and moves spirally in the spiral groove 121, thereby driving the clamping part 3 to rotate together, realize rotation around the heater 11, and realize uniform heating.

[0024] There are two rotating rings 22, and the outer surfaces of the two rotating rings 22 are provided with a plurality of mounting support plates 222 in a circular array, and the mounting support plates 222 on the two rotating rings 22 correspond one to one along the axial direction of the rotating ring 22, and the two ends of the clamping member 3 are respectively hinged to the middle of the two mounting support plates 222 on the two rotating rings 22. It should be noted that the center of the mounting support plate 222 is located between the rotating rings 22. The spacing between the center of the mounting support plate 222 is sufficient for the clamping member 3 to rotate, and the upper end of the clamping member 3 is hinged to the center of the mounting support plate 222 so that its center of gravity can be located below, so as to achieve rotation during the rotation process. The clamp 3 can rotate and tilt along the hinge. When the clamp 3 orbits to the right side of the heater 11 with the rotating ring 22, the left side of the material on the clamp 3 is close to the heat source. When the clamp 3 orbits below the heater 11, the upper end of the material on the clamp 3 is close to the heat source. When the clamp 3 orbits to the left side of the heater 11, the right end of the material on the clamp 3 is close to the heat source. When the clamp 3 orbits above the heater 11, the lower end of the material on the clamp 3 is close to the heat source. During the orbit, the material can be evenly heated in all directions to ensure the carbonization quality.

[0025] The clamping member 3 includes a supporting bracket 32, a first clamping plate 33 and a second clamping plate 34, the first clamping plate 33 and the second clamping plate 34 are symmetrically arranged on the supporting bracket 32, and the first clamping plate 33 and the second clamping plate 34 are connected to the supporting bracket 32 ​​through a spring and a limiting rod, a limiting seat is arranged on the supporting bracket 32, and the first clamping plate 33 and the second clamping plate 34 are provided with limiting blocks at both ends, the limiting blocks are arranged in the slide groove of the limiting seat, and the slide groove is provided with a spring and a limiting rod, and the spring is provided to the first clamping plate 33 and the second clamping plate The plates 34 are squeezed to make them close to each other. When the cylinder containing the material to be dried is placed between the first clamping plate 33 and the second clamping plate 34, the first clamping plate 33 and the second clamping plate 34 clamp the surface of the cylinder under the action of the spring, thereby improving the stability of the clamping. Relying on the expansion and contraction ability of the spring, it can adapt to the clamping of cylinders of different sizes, and the upper ends of the first clamping plate 33 and the second clamping plate 34 are inclined, which increases the opening distance between the upper ends of the first clamping plate 33 and the second clamping plate 34, making it convenient to place the cylinder.

[0026] Embodiment 2: This is the second embodiment of the present invention, which provides a high-insulation foam carbon drying method, comprising the following steps: S1: mixing the carbon source powder and the water containing the pore-forming agent into a solid-liquid mixed state, and placing the solid-liquid mixed material into a placing container, and then placing the container into the drying furnace body 1 for preheating; S2: The temperature in the drying furnace body 1 is raised to 180-350°C, and the shaped material is preheated for 10-120 minutes to discharge the moisture in the material and foam it to shape it. After foaming and shaping, the furnace temperature is further raised to 210°C for pretreatment and kept warm for 45 minutes to remove moisture and oxidize and remove easily oxidizable elements; S3: After preheating, ensure the sealing state of the drying furnace body 1, adjust the drying furnace body 1 to a vacuum state, observe the internal situation, and fill the drying furnace body 1 with nitrogen or inert gas; S4: under vacuum conditions, nitrogen or inert gas protection, the temperature in the drying furnace body 1 is raised to 1000-2000° C., and the foamed and shaped material is carbonized for 1-60 minutes; S5: During the processing, the driving member 24 drives the annular plate 23 to move, and the blocks 231 at both ends of the annular plate 23 are limited and slide by the slide groove 13, and the movement of the fixed ring 21 drives the rotating ring 22 to move, and the rotating ring 22 follows the guide rod 221 to move spirally in the spiral groove 121, thereby driving the clamping member 3 to rotate together; S6: During the rotation process, the clamp 3 can rotate and tilt along the hinge. When the clamp 3 orbits with the rotating ring 22 to the right side of the heater 11, the left side of the material on the clamp 3 is close to the heat source. When the clamp 3 orbits below the heater 11, the upper end of the material on the clamp 3 is close to the heat source. When the clamp 3 orbits to the left side of the heater 11, the right end of the material on the clamp 3 is close to the heat source. When the clamp 3 orbits above the heater 11, the lower end of the material on the clamp 3 is close to the heat source. During the orbit, the material can be heated evenly in all directions. S7: Finally, cooling is performed under vacuum, nitrogen or inert gas protection to obtain the foamed carbon.

[0027] The carbon source powder is any one or more of flour, corn flour, glutinous rice flour or rice flour, the amount of the pore-forming agent is 1-180 g / kg of the carbon source powder, the pore-forming agent is any one or more of biological fungus pore-forming agent, organic pore-forming agent or inorganic compound pore-forming agent, and when the pore-forming agent contains biological fungus pore-forming agent or organic pore-forming agent, before stirring into a solid-liquid mixed state, the temperature is controlled at 0-38° C., and after the mixed state is formed, it is allowed to stand and ferment for 0.5-3 hours at 40-42° C.

[0028] The biological bacteria pore-forming agent is one or more of yeast and yogurt; the organic pore-forming agent is one or more of white sugar, honey, milk, alcohol or white wine; the inorganic compound pore-forming agent is one or more of sodium carbonate, calcium carbonate, sodium bicarbonate, calcium bicarbonate, ammonium carbonate, ammonium bicarbonate, potassium carbonate, potassium bicarbonate or magnesium carbonate.

[0029] The alumina ceramic fiber reinforced foam carbon is obtained by the above method, which ensures the quality of the foam carbon and improves the compressive strength.

[0030] Example 3: Reference Figure 7 - Figure 8 , which is the third embodiment of the present invention. This embodiment is different from the first embodiment. During the implementation of the first embodiment, it is found that the clamping member 3 can rotate and tilt along the hinge. However, due to the active connection at the hinge, the connection is not restricted. During the revolution, it is too active, which can easily cause the clamping member 3 to swing back and forth. When the degree of shaking is too large, it is easy to cause the material to overflow. In addition, the stability during the revolution is not high, which can easily cause the hinge to deform, affecting the flexibility of subsequent rotation.

[0031] In order to solve the above problems, the outer side of the fixed ring 21 of this embodiment is connected to the first half ring 211 and the second half ring 212 through two support plates respectively, a reducer is installed on the mounting support plate 222, and the output shaft sleeve of one end of the reducer is connected with a driving gear 2221. The inner wall of the first half ring 211 is provided with an inner arc-shaped rack 2111, and the outer wall of the second half ring 212 is provided with an outer arc-shaped rack 2121. The driving gear 2221 is intermittently meshed with the inner arc-shaped rack 2111 and the outer arc-shaped rack 2121 respectively, and the clamping The shaft on one side of the component 3 is connected to the output shaft at the other end of the reducer, through the inner arc rack 2111 and the outer arc rack 2121 provided on the first half ring 211 and the second half ring 212. When the mounting support plate 222 rotates, the driving gear 2221 is driven to rotate together. When the driving gear 2221 is in a vertical state and rotates on the heater 11 toward the right side of the heater 11, the driving gear 2221 meshes with the outer arc rack 2121, thereby driving the driving gear 2221 to rotate clockwise. The reducer changes its speed. When the driving gear 2221 moves to the right side of the heater 11, the reducer drives the shaft on one side of the clamping member 3 to rotate 90° clockwise. When the driving gear 2221 moves to the bottom of the heater 11, the driving gear 2221 is also driven by the outer arc-shaped rack 2121, and the reducer drives the clamping member 3 to rotate 90° clockwise again. When the driving gear 2221 moves to the left side of the heater 11, the driving gear 2221 meshes with the inner arc-shaped rack 2111 and is driven by the inner arc-shaped rack 2111. The rack 2111 drives the counterclockwise rotation, and then drives the clamping part 3 to rotate 90° counterclockwise. After the driving gear 2221 rotates one circle around the heater 11, the clamping part 3 rotates one circle around the heater 11. Driven by the reducer, the clamping part 3 can always adjust its inclination state to ensure that it is always in a vertical state during the rotation process. With the gear limiter, the clamping part 3 will not swing back and forth during the rotation, achieving stable adjustment, avoiding material overflow caused by shaking, and improving the stability of the drive.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A highly heat-insulating foam carbon drying device, comprising a drying furnace body (1) with furnace covers sealed at both ends, characterized in that: A heater (11) is coaxially arranged in the drying furnace body (1), a limiting sleeve (12) is sleeved on the outer side of the heater (11), a moving member (2) capable of reciprocating along its axis is sleeved on the limiting sleeve (12), a spiral groove (121) is provided on the limiting sleeve (12), the moving member (2) is plugged and connected with the spiral groove (121), the moving member (2) comprises a rotating ring (22) sleeved on the limiting sleeve (12), and the rotating ring (22) rotates around the spiral groove (121) while the moving member (2) moves on the limiting sleeve (12); The movable member (2) is provided with a plurality of clamping members (3) for placing materials. The clamping members (3) are hingedly connected to the movable member (2) via a bearing member (31). The clamping members (3) can rotate around the hinged end of the bearing member (31) while following the rotating ring (22) to revolve around the limiting sleeve (12), so that the clamping members (3) are always in a vertical state.

2. A highly heat-insulating foam carbon drying device according to claim 1, characterized in that: The moving member (2) further comprises a fixed ring (21), an annular plate (23) and a driving member (24); the outer wall of the annular plate (23) is provided with two clamping blocks (231); the inner wall of the drying furnace body (1) is provided with a slide groove (13) for limiting the sliding of the two clamping blocks (231); the driving member (24) is connected to the annular plate (23) and drives the annular plate (23) to move; the fixed ring (21) is connected to the annular plate (23); and one end of the fixed ring (21) is connected to the rotating ring (22) via a bearing.

3. A highly heat-insulating foam carbon drying device according to claim 2, characterized in that: The fixed ring (21) and the rotating ring (22) are sleeved on the limiting sleeve (12); a guide rod (221) is provided on the inner wall of the rotating ring (22); and the guide rod (221) is inserted into the spiral groove (121).

4. A highly heat-insulating foam carbon drying device according to claim 3, characterized in that: Two rotating rings (22) are provided, and the outer surfaces of the two rotating rings (22) are provided with a plurality of mounting support plates (222) in a circular array, and the mounting support plates (222) on the two rotating rings (22) correspond one to one along the axis direction of the rotating ring (22).

5. A highly heat-insulating foam carbon drying device according to claim 4, characterized in that: The two ends of the clamping member (3) are respectively hinged to the middle of two mounting support plates (222) positioned on the two rotating rings (22).

6. A highly heat-insulating foam carbon drying device according to claim 5, characterized in that: The clamping member (3) comprises a supporting bracket (32), a first clamping plate (33) and a second clamping plate (34); the first clamping plate (33) and the second clamping plate (34) are symmetrically arranged on the supporting bracket (32), and the first clamping plate (33) and the second clamping plate (34) are connected to the supporting bracket (32) via a spring and a limiting rod.

7. A highly heat-insulating foam carbon drying device according to claim 6, characterized in that: The outer side of the fixed ring (21) is respectively connected to a first half ring (211) and a second half ring (212) via two support plates; a reducer is mounted on the mounting support plate (222); an output shaft at one end of the reducer is sleeved with a driving gear (2221); an inner arc-shaped rack (2111) is provided on the inner wall of the first half ring (211); an outer arc-shaped rack (2121) is provided on the outer wall of the second half ring (212); the driving gear (2221) is intermittently meshed with the inner arc-shaped rack (2111) and the outer arc-shaped rack (2121); and a shaft on one side of the clamping member (3) is connected to an output shaft at the other end of the reducer.

8. A high-insulation foam carbon drying method, which is applied to the high-insulation foam carbon drying device described in claim 7, characterized in that: The following steps are involved: S1: mixing carbon source powder and water containing a pore-forming agent into a solid-liquid mixed state, placing the solid-liquid mixed material into a placing container, and then placing the container into a drying furnace body (1) for preheating; S2: raising the temperature in the drying furnace (1) to 180-350°C to preheat the shaped material for 10-120 minutes to discharge moisture from the material; S3: After preheating, ensure that the drying furnace body (1) is sealed, adjust the drying furnace body (1) to a vacuum state, observe the internal conditions, and fill the drying furnace body (1) with nitrogen or an inert gas; S4: under vacuum conditions, nitrogen or inert gas protection, the temperature in the drying furnace (1) is raised to 1000-2000°C, the material is carbonized for 1-60 minutes, and then cooled under vacuum conditions, nitrogen or inert gas protection to obtain the foamed carbon.

9. A method for drying highly heat-insulating foamed carbon according to claim 8, characterized in that: The carbon source powder is any one or more of flour, corn flour, glutinous rice flour or rice flour, the amount of the pore-forming agent is 1-180 g / kg of carbon source powder, the pore-forming agent is any one or more of biological fungus pore-forming agent, organic pore-forming agent or inorganic compound pore-forming agent, and when the pore-forming agent contains biological fungus pore-forming agent or organic pore-forming agent, before stirring into a solid-liquid mixed state, the temperature is controlled at 0-38° C., and after the mixed state is formed, it is allowed to stand and ferment for 0.5-3 hours at 40-42° C.

10. A method for drying highly heat-insulating foamed carbon according to claim 9, characterized in that: The biological bacteria pore-forming agent is one or more of yeast and yogurt; the organic pore-forming agent is one or more of white sugar, honey, milk, alcohol or white wine; the inorganic compound pore-forming agent is one or more of sodium carbonate, calcium carbonate, sodium bicarbonate, calcium bicarbonate, ammonium carbonate, ammonium bicarbonate, potassium carbonate, potassium bicarbonate or magnesium carbonate.

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