Carbon-graphite material and preparation device thereof

Abstract

The invention provides a carbon-graphite material preparation device, which solves the problems of inconvenience in continuous material change in graphite production and the like, and comprises a vertical furnace body, a spiral lifting assembly is arranged in the vertical furnace body, and the spiral lifting assembly drives a heating tank to move and lift along a spiral track; a feeding and discharging assembly opposite to the spiral lifting assembly is installed at the upper end of the vertical furnace body, and an electric heating assembly connected with the spiral lifting assembly is arranged in the vertical furnace body. The device has the advantages of convenience in continuous reloading, stable structure and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of graphite preparation, and particularly relates to a device for preparing carbon-graphite materials. Background Art

[0002] A graphitization furnace is a high-temperature treatment device for sintering and graphitizing carbon materials. It uses the material to be heat-treated directly as a heating element, and the current directly passes through the material to generate heat, thereby achieving graphitization. Or the material is only a heat-receiving body, and the heat comes from heating elements outside the material, such as graphite rods or other conductive materials. When the production scale is large, a continuous graphitization furnace or a large box-type graphitization furnace can be selected; when the production scale is small, a vacuum graphitization furnace or a small Acheson graphitization furnace can be selected, etc. However, in the actual production process, for the graphitization degree of different carbon materials during the large-scale graphite preparation process, the continuous material replacement is relatively inconvenient, which in turn affects the overall production efficiency.

[0003] In order to solve the deficiencies of the existing technology, people have carried out long-term explorations and proposed various solutions. For example, a Chinese patent document discloses a graphitization furnace [202210089339.8], which includes a furnace body provided with a furnace inner cavity, a negative electrode material outlet is arranged at the lower part of the furnace inner cavity, and a cooling device is arranged at the negative electrode material outlet; a negative electrode material input section is connected to the upper part of the furnace body, the negative electrode material input section has an input section inner cavity, the input section inner cavity communicates with the furnace inner cavity, a negative electrode material inlet is arranged at the upper part of the negative electrode material input section, and the negative electrode material inlet communicates with the input section inner cavity; and a heat-insulating material accommodating cylinder is sleeved outside the furnace body and attached to the outer wall of the furnace body, and the heat-insulating material accommodating cylinder is provided with a cylinder inner cavity, and a heat-insulating material inlet is arranged at the upper part of the cylinder inner cavity.

[0004] The above solution solves the problem of graphitization efficiency to a certain extent, but there are still many deficiencies in this solution, such as the problem of convenient continuous material replacement. Summary of the Invention

[0005] The purpose of the present invention is to provide a carbon-graphite material preparation device with reasonable design and convenient material replacement for the above problems.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: A carbon-graphite material preparation device includes a vertical furnace body, a spiral lifting component is installed inside the vertical furnace body, the spiral lifting component drives the heating tank to move up and down along a spiral track, a feeding and discharging component opposite to the spiral lifting component is installed at the upper end of the vertical furnace body, and an electric heating component connected to the spiral lifting component is arranged inside the vertical furnace body.

[0007] In the above-mentioned carbon-graphite material preparation device, the spiral lifting assembly includes an outer track and an inner track extending spirally upward in the vertical direction, and the upper ends of the outer track and the inner track are provided with connections with the feed and discharge assemblies; the outer track and the inner track respectively have a pair of spiral support bars, and support seats are slidably installed on the outer track and the inner track; the support seat has a main seat body connected to the bottom of the heating tank, and sub-series bodies slidably connected to the support bars are rotatably installed on both sides of the main seat body; a driving assembly is installed between the support seat and the bottom of the vertical furnace body.

[0008] In the above-mentioned carbon-graphite material preparation device, the driving assembly includes an outer driving frame and an inner driving frame rotatably mounted on the bottom of the vertical furnace body, a track changing frame is arranged between the outer driving frame and the inner driving frame, and the outer driving frame, the inner driving frame and the track changing frame are connected to the driving motor through a speed changing gear set.

[0009] In the above-mentioned carbon-graphite material preparation device, the outer driving frame is connected to an outer driving vertical rod which is arranged symmetrically in the center and extends in the vertical direction, the inner driving frame is connected to an inner driving vertical rod which is arranged symmetrically in the center and extends in the vertical direction, the lower end of the support seat is equipped with a driving push rod, and both ends of the driving push rod are respectively equipped with driving claws which engage with the outer driving vertical rod or the inner driving vertical rod; the upper and lower ends of the outer track and the inner track are respectively connected by transfer tracks, the rotation center of the track changing frame is horizontally offset relative to the rotation center of the outer driving frame and the inner driving frame, the rotation center of the track changing frame and the arc center of the transfer track are on the same vertical central axis, and a number of reversing sliders are slidably installed on the track changing frame, and the reversing sliders are connected to the reversing vertical rod which extends in the vertical direction and engages with the driving claws.

[0010] In the above-mentioned carbon-graphite material preparation device, the electric heating component includes a heating electrode installed at the upper end of the support seat, and the heating electrode is connected to a power supply conductor that passes through the main seat body and the sub-seater body in sequence. The support bars of the outer track and the inner track are made of conductive material, and the support bars are connected end to end to form relatively independent positive and negative circuits. The positive and negative circuits are respectively connected to the heating electrode through the power supply conductor.

[0011] In the above-mentioned carbon-graphite material preparation device, the feed and discharge assembly includes an inlet and outlet installed at the upper end of the vertical furnace body, a vertically arranged lifting screw is installed in the inlet and outlet, the lifting screw is transmission-connected to a lifting head that can be inserted vertically downward into the port of the heating tank, an electric push rod is installed at the upper end of the lifting head, the telescopic end of the electric push rod faces downward and is connected to a claw that can be flipped relative to the lifting head through an opening and closing connecting rod.

[0012] In the above-mentioned carbon-graphite material preparation device, the heating tank includes a main tank body. A heat-resistant layer is provided on the inner side of the main tank body and a heat-insulating layer is provided on the outer side. An electrode connector is provided at the bottom of the main tank body, and the electrode connector is connected to a graphite electrode vertically arranged in the main tank body. A clamping groove for inserting a clamping jaw is provided on the inner side at the top port of the main tank body.

[0013] In the above-mentioned carbon-graphite material preparation device, ventilation pipes are respectively connected to the upper and lower ends of the vertical furnace body. A vacuum pipe is connected to the top of the vertical furnace body. A heat-insulating layer is provided on the inner side of the vertical furnace body. A sealing cover is rotatably connected to the inlet and outlet at the upper end of the vertical furnace body, and a sealing structure that fits and presses against each other is provided between the sealing cover and the inlet and outlet.

[0014] In the above-mentioned carbon-graphite material preparation device, the sealing structure includes a sealing groove provided at the top of the inlet and outlet and surrounding it circumferentially. The sealing cover has a sealing strip inserted into the sealing groove. A sealing cone surface that fits against each other is provided between the sealing groove and the sealing strip. A switching arm linked to a hydraulic push rod is drivingly connected between the sealing cover and the vertical furnace body.

[0015] In the above-mentioned carbon-graphite material preparation device, a number of temperature sensors are provided inside the vertical furnace body, and the temperature sensors are arranged radially relative to the spiral lifting assembly.

[0016] Compared with the existing technology, the advantages of the present invention are as follows: The spiral lifting assembly drives the heating tank to move up and down in a cycle, and the feeding and discharging assembly replaces the material of the heating tank, thereby improving the continuous processing ability of graphite; The vertical furnace body uses an electric heating assembly to directly conduct electricity to heat the carbon material, thereby improving the graphitization efficiency. Each heating tank is relatively independent, thereby ensuring that the carbon material is fully graphitized; The vertical furnace body has a good sealing effect on the internal heating tank, and a vacuum pipe is used to pump and press or inert gas is introduced to ensure the isolation effect between the remaining heating tanks and the outside during the material replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the spiral lifting assembly of the present invention; Figure 3 is a schematic diagram of the track structure of the present invention; Figure 4 is a schematic structural diagram of the driving assembly of the present invention; Figure 5 is a schematic diagram of a partial structure of the present invention; Figure 6 is a partial schematic diagram of the driving assembly of the present invention; Figure 7 is a partial cross-sectional view of the feeding and discharging assembly of the present invention; Figure 8It is an assembly sectional view of the support base and the heating tank of the present invention; In the figure, there are vertical furnace body 1, ventilation pipeline 11, vacuum tube 12, heat insulation layer 13, sealing cover 14, sealing groove 15, sealing strip 16, sealing conical surface 17, opening and closing arm 18, hydraulic push rod 19, screw lifting assembly 2, outer track 21, inner track 22, support bar 23, transfer track 24, reversing slider 25, reversing vertical rod 26, heating tank 3, main tank body 31, heat-resistant layer 32, heat preservation layer 33, electrode connector 34, graphite electrode 35, clamping groove 36, feeding and discharging assembly 4, inlet and outlet 41, lifting lead screw 42, lifting head 43, electric push rod 44, opening and closing connecting rod 45, claw 46, electric heating assembly 5, heating electrode 51, power supply conductor 52, support base 6, main base body 61, sub-base body 62, driving assembly 7, outer driving frame body 71, inner driving frame body 72, rail-changing frame body 73, speed-changing gear set 74, driving motor 75, outer driving vertical rod 76, inner driving vertical rod 77, driving push rod 78, driving claw 79. Specific embodiments

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] As Figure 1-8 shown, a carbon-graphite material preparation device includes a vertical furnace body 1 with a splicing and combination structure. A screw lifting assembly 2 is installed inside the vertical furnace body 1, and the inside of the vertical furnace body 1 is relatively isolated from the screw lifting assembly 2. The screw lifting assembly 2 drives the heating tank 3 to move up and down along a spiral track, and the heating tank 3 moves in a cycle to adjust its orientation. An inlet and outlet assembly 4 opposite to the screw lifting assembly 2 is installed at the upper end of the vertical furnace body 1. The inlet and outlet assembly 4 cooperates with the screw lifting assembly 2 to realize the continuous feeding and discharging of the heating tank 3. An electric heating assembly 5 connected to the screw lifting assembly 2 is arranged inside the vertical furnace body 1. In this embodiment, the electric heating assembly 5 heats the carbon material by direct conduction. Each heating tank 3 is relatively independent and can realize continuous material replacement.

[0020] Specifically, different from the conventional spiral guide roller transmission structure, in this embodiment, the screw lifting assembly 2 includes an outer track 21 and an inner track 22 that spirally extend upward in the vertical direction. The upper ends of the outer track 21 and the inner track 22 are connected to the inlet and outlet assembly 4; the upper and lower ends of the outer track 21 and the inner track 22 form a circulating structure, so as to realize the continuous circular movement of the heating tank 3, adjust the electric heating time according to the amount of carbon material in the heating tank 3, and ensure its full graphitization. The heating tank 3 is lifted along the outer track 21 and the inner track 22, and the inlet and outlet assembly 4 at the top removes the fully graphitized carbon material.

[0021] To ensure the flexible movement of the heating tank 3, the outer rail 21 and inner rail 22 each have a pair of spiral support bars 23. A support base 6 is slidably mounted on the outer rail 21 and inner rail 22. The support base 6 comprises a main base body 61 connected to the bottom of the heating tank 3, with auxiliary base bodies 62 rotatably mounted on either side of the main base body 61 and slidably connected to the support bars 23. A drive assembly 7 is installed between the support base 6 and the bottom of the vertical furnace body 1. The outer rail 21 and inner rail 22 remain relatively parallel. Vertical support rods and other structures are provided between the outer rail 21 and inner rail 22 and the vertical furnace body 1 to maintain the spiral structure of the outer rail 21 and inner rail 22. The support rods do not affect the sliding movement of the auxiliary base body 62 and the support bars 23. A slot is provided at the lower end of the auxiliary base body 62 for the support rods to pass through.

[0022] Specifically, the drive assembly 7 provides driving force for each support base 6, driving it to move along a spiral trajectory. The drive assembly 7 specifically includes an outer drive frame 71 and an inner drive frame 72 rotatably mounted on the bottom of the vertical furnace body 1. A track-changing frame 73 is disposed between the outer drive frame 71 and the inner drive frame 72. The outer drive frame 71, the inner drive frame 72, and the track-changing frame 73 are connected to a drive motor 75 via a speed-changing gear set 74. Each frame rotates circumferentially at a fixed transmission ratio, ensuring that the relative circumferential angle of the support base 6 remains fixed, thereby achieving a one-by-one material exchange between the heating tank 3 and the inlet and outlet assembly 4.

[0023] In addition, to ensure the synchronous movement of the support base 6, the outer drive frame 71 is connected to an outer drive rod 76 arranged symmetrically and extending in the vertical direction, and the inner drive frame 72 is connected to an inner drive rod 77 arranged symmetrically and extending in the vertical direction. A drive push rod 78 is mounted at the lower end of the support base 6. The ends of the drive push rod 78 are respectively equipped with drive claws 79 that engage with the outer drive rod 76 or the inner drive rod 77. As the support base 6 rises and falls alternately, the outer drive rod 76 or the inner drive rod 77 engages or disengages with the drive claws 79, thereby achieving drive reversal. At the same time, the drive push rod 78 provides driving force to the support base 6, ensuring the normal transition of the support base 6 on the transfer track 24.

[0024] In order to achieve a smooth transition between the lifting and lowering of the support base 6 and the heating tank 3, the upper and lower ends of the outer rail 21 and the inner rail 22 are respectively connected by the transfer rail 24. The rotation center of the rail change frame 73 is horizontally offset relative to the rotation centers of the outer drive frame 71 and the inner drive frame 72. The rotation center of the rail change frame 73 and the arc center of the transfer rail 24 are on the same vertical center axis. A number of reversing sliders 25 are slidably mounted on the rail change frame 73. The reversing sliders 25 are connected to reversing rods 26 that extend in the vertical direction and engage with the driving claws 79. As the rail change frame 73 rotates circumferentially, the reversing rods 26 move radially along with the reversing sliders 25, thereby guiding the support base 6 from the outer rail 21 to the inner rail 22, or from the inner rail 22 to the inner rail 22. By precisely setting the spiral radius of the outer rail 21 and the inner rail 22, the reversing rods 26 are prevented from interfering with or colliding with them, while ensuring that the reversing rods 26 can normally engage or disengage with the driving claws 79 of the support base 6.

[0025] At the same time, the electric heating assembly 5 enables simultaneous heating of the carbon material within each heating tank 3. It includes a heating electrode 51 mounted on the upper end of the support base 6. The heating electrode 51 is connected to a power supply conductor 52 that passes sequentially through the main base body 61 and the auxiliary base body 62. The support bars 23 of the outer track 21 and the inner track 22 are made of conductive material. The support bars 23 are connected end to end to form relatively independent positive and negative circuits, respectively. The positive and negative circuits are respectively connected to the heating electrode 51 via the power supply conductor 52. The electric heating assembly 5 adopts a DC heating structure. The two sets of support bars 23 remain relatively isolated, their surfaces covered with an insulating layer, and the insulating layer has a conductive portion that contacts the power supply conductor 52.

[0026] As can be seen, the material inlet and outlet assembly 4 uses electric means for automatic material inlet and outlet, including an inlet and outlet 41 installed at the upper end of the vertical furnace body 1. A vertically arranged lifting screw 42 is installed in the inlet and outlet 41. The lifting screw 42 is transmission-connected to a lifting head 43 that can be vertically inserted downward into the port of the heating tank 3. An electric push rod 44 is installed on the upper end of the lifting head 43. The telescopic end of the electric push rod 44 faces downward and is connected to a claw 46 that can be turned relative to the lifting head 43 through an opening and closing connecting rod 45. The electric push rod 44 provides driving force to drive the claw 46 to turn outward and engage the heating tank 3. The operator then removes the graphitized carbon material and its heating tank 3, or hands over the heating tank 3 after loading to the material inlet and outlet assembly 4 for delivery into the vertical furnace body 1 and cooperates with the spiral lifting assembly 2.

[0027] It is clear that the heating tank 3 implements unitized heat treatment of the carbon material. The heating tank 3 specifically includes a main tank body 31, which is provided with a heat-resistant layer 32 on the inside and a heat-insulating layer 33 on the outside. The bottom of the main tank body 31 is provided with an electrode connector 34, which is connected to a graphite electrode 35 vertically arranged in the main tank body 31. The top port of the main tank body 31 is provided with a slot 36 for inserting a claw 46. When the electrode connector 34 and graphite electrode 35 in each heating tank 3 are energized, the carbon material is independently heated. The heating time is adjusted according to the amount of carbon material, thereby improving the utilization rate of electricity and reducing overall energy consumption.

[0028] Preferably, ventilation ducts 11 are connected to the upper and lower ends of the vertical furnace body 1 for internal cooling and ventilation, maintaining a constant temperature within the vertical furnace body 1 while preventing excessive temperatures from affecting the normal transmission and conductivity of the spiral lifting assembly 2. A vacuum tube 12 is connected to the top of the vertical furnace body 1 to introduce inert gas, maintaining a positive internal pressure during material exchange to prevent air intrusion from affecting graphitization. A thermal insulation layer 13 is provided on the inside of the vertical furnace body 1. A sealing cover 14 is rotatably connected to the inlet and outlet 41 at the upper end of the vertical furnace body 1. A sealing structure is provided between the sealing cover 14 and the inlet and outlet 41, which are tightly fitted and compressed. The vertical furnace body 1 maintains a good sealing effect, leaving only the top inlet and outlet 41 for material exchange.

[0029] Obviously, the sealing structure is hydraulically driven to open and close. Specifically, it includes a sealing groove 15 that is provided at the top of the inlet and outlet 41 and surrounds the circumference. The sealing cover 14 has a sealing strip 16 inserted into the sealing groove 15. A sealing conical surface 17 is provided between the sealing groove 15 and the sealing strip 16, and the sealing groove 15 and the sealing strip 16 are provided with a sealing surface 17 that fits together. The sealing cover 14 is connected to the vertical furnace body 1 by an opening and closing arm 18 that is linked to a hydraulic push rod 19. The sealing cover 14 is rotated to provide a pressing force for the sealing groove 15 and the sealing strip 16.

[0030] Furthermore, the vertical furnace body 1 is equipped with several temperature sensors, which are arranged radially relative to the spiral lifting assembly 2. The temperature sensors and the electric heating assembly 5 adopt feedback regulation to monitor the internal heating tanks 3 to ensure that the carbon material is fully reacted.

[0031] To sum up, the principle of this embodiment is that the spiral lifting component 2 drives the heating tank 3 to transmit in spiral motion, and then drives each heating tank 3 to be lifted up one by one and replaced by the inlet and outlet component 4, wherein the electric heating component 5 is combined and integrated with the spiral lifting component 2 to ensure the continuity of graphite preparation.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0033] Although terms such as vertical furnace body 1, ventilation pipeline 11, vacuum tube 12, heat insulation layer 13, sealing cover 14, sealing groove 15, sealing strip 16, sealing conical surface 17, opening and closing arm 18, hydraulic push rod 19, screw lifting assembly 2, outer track 21, inner track 22, support bar 23, transfer track 24, reversing slider 25, reversing vertical rod 26, heating tank 3, main tank body 31, heat-resistant layer 32, heat preservation layer 33, electrode connector 34, graphite electrode 35, card slot 36, feeding and discharging assembly 4, inlet and outlet 41, lifting lead screw 42, lifting head 43, electric push rod 44, opening and closing connecting rod 45, claw 46, electric heating assembly 5, heating electrode 51, power supply conductor 52, support seat 6, main seat body 61, sub-seat body 62, driving assembly 7, outer driving frame body 71, inner driving frame body 72, rail-changing frame body 73, variable speed gear set 74, driving motor 75, outer driving vertical rod 76, inner driving vertical rod 77, driving push rod 78, driving claw 79 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any kind of additional restriction is contrary to the spirit of the present invention.

Claims

1. A carbon-graphite material preparation device, comprising a vertical furnace body (1), characterized in that, A spiral lifting assembly (2) is installed inside the vertical furnace body (1), and the spiral lifting assembly (2) drives the heating tank (3) to move up and down along a spiral trajectory. An inlet and outlet assembly (4) opposite to the spiral lifting assembly (2) is installed at the upper end of the vertical furnace body (1), and an electric heating assembly (5) connected to the spiral lifting assembly (2) is provided inside the vertical furnace body (1).

2. The carbon-graphite material preparation device according to claim 1, characterized in that, The spiral lifting assembly (2) comprises an outer track (21) and an inner track (22) extending spirally upward in a vertical direction, and the upper ends of the outer track (21) and the inner track (22) are connected to the feeding and discharging assembly (4).

3. The carbon-graphite material preparation device according to claim 2, characterized in that, The outer rail (21) and the inner rail (22) each have a pair of spiral support bars (23), and a support seat (6) is slidably mounted on the outer rail (21) and the inner rail (22).

4. The carbon-graphite material preparation device according to claim 3, wherein, The support seat (6) has a main seat body (61) connected to the bottom of the heating tank (3), and auxiliary seat bodies (62) slidably connected to the support bars (23) are rotatably installed on both sides of the main seat body (61); a driving component (7) is installed between the support seat (6) and the bottom of the vertical furnace body (1).

5. The carbon-graphite material preparation device according to claim 4, characterized in that, The driving assembly (7) includes an outer driving frame (71) and an inner driving frame (72) rotatably mounted on the bottom of the vertical furnace body (1); a rail changing frame (73) is provided between the outer driving frame (71) and the inner driving frame (72); the outer driving frame (71), the inner driving frame (72) and the rail changing frame (73) are connected to the driving motor (75) via a speed change gear set (74).

6. The carbon-graphite material preparation device according to claim 5, characterized in that, The outer driving frame (71) is connected to an outer driving vertical rod (76) arranged in a central symmetrical manner and extending in a vertical direction, and the inner driving frame (72) is connected to an inner driving vertical rod (77) arranged in a central symmetrical manner and extending in a vertical direction. A driving push rod (78) is installed at the lower end of the support seat (6), and driving claws (79) are respectively installed at both ends of the driving push rod (78) to engage with the outer driving vertical rod (76) or the inner driving vertical rod (77).

7. The carbon-graphite material preparation device according to claim 6, characterized in that, The upper and lower ends of the outer track (21) and the inner track (22) are respectively connected via transfer tracks (24).

8. A carbon-graphite material preparation device according to claim 7, characterized in that, The rotation center of the track changing frame (73) is horizontally offset relative to the rotation centers of the outer driving frame (71) and the inner driving frame (72). The rotation center of the track changing frame (73) and the arc center of the transfer track (24) are located on the same vertical central axis. A plurality of reversing sliders (25) are slidably mounted on the track changing frame (73). The reversing sliders (25) are connected to a reversing vertical rod (26) extending in a vertical direction and engaging with the driving claw (79).

9. The carbon-graphite material preparation device according to claim 3, characterized in that, The electric heating assembly (5) comprises a heating electrode (51) mounted on the upper end of the support seat (6), and the heating electrode (51) is connected to a power supply conductor (52) passing through the main seat body (61) and the auxiliary seat body (62) in sequence.

10. The carbon-graphite material preparation device according to claim 9, characterized in that, The support bars (23) of the outer orbit (21) and the inner orbit (22) are made of conductive materials. The support bars (23) are respectively connected end to end to form relatively independent positive and negative circuits. The positive and negative circuits are respectively connected to the heating electrodes (51) through power supply conductors (52).

11. A carbon-graphite material preparation device according to claim 1, characterized in that, The feeding and discharging assembly (4) includes an inlet and outlet (41) installed at the upper end of the vertical furnace body (1). A vertically arranged lifting lead screw (42) is installed in the inlet and outlet (41). The lifting lead screw (42) is drivingly connected to a lifting head (43) that can be vertically inserted downward into the port of the heating tank (3). An electric push rod (44) is installed at the upper end of the lifting head (43). The telescopic end of the electric push rod (44) faces downward and is connected through an opening and closing connecting rod (45) to a claw (46) that can be flipped relative to the lifting head (43).

12. The carbon-graphite material preparation device according to claim 11, wherein, The heating tank (3) includes a main tank body (31). A heat-resistant layer (32) is provided inside the main tank body (31) and a heat-insulating layer (33) is provided outside. An electrode connector (34) is provided at the bottom of the main tank body (31), and the electrode connector (34) is connected to a graphite electrode (35) vertically arranged in the main tank body (31). A clamping groove (36) for the claw (46) to insert is provided inside the top port of the main tank body (31).

13. The carbon-graphite material preparation device according to claim 12, wherein, Ventilation pipes (11) are respectively connected to the upper and lower ends of the vertical furnace body (1). A vacuum tube (12) is connected to the top of the vertical furnace body (1). A heat-insulating layer (13) is provided inside the vertical furnace body (1). A sealing cover (14) is rotatably connected to the inlet and outlet (41) at the upper end of the vertical furnace body (1). A sealing structure that fits and presses against each other is provided between the sealing cover (14) and the inlet and outlet (41).

14. A carbon-graphite material preparation device according to claim 13, characterized in that, The sealing structure includes a sealing groove (15) provided at the top of the inlet and outlet (41) and surrounding it circumferentially. The sealing cover (14) has a sealing strip (16) inserted into the sealing groove (15). A sealing cone surface (17) that fits against each other is provided between the sealing groove (15) and the sealing strip (16). A switching arm (18) linked to a hydraulic push rod (19) is drivingly connected between the sealing cover (14) and the vertical furnace body (1).

15. A carbon-graphite material preparation device according to claim 1, characterized in that, A number of temperature sensors are installed inside the vertical furnace body (1). The temperature sensors are arranged radially relative to the spiral lifting assembly (2).

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