A carbon-graphite material and a preparation device thereof

Abstract

This invention provides a carbon-graphite material preparation device that solves the problem of inconvenient continuous material change in graphite production. The device comprises a vertical furnace body with a spiral lift assembly installed inside. The spiral lift assembly drives a heating tank to move up and down along a spiral trajectory. An inlet and outlet assembly is installed at the upper end of the furnace body, opposite to the spiral lift assembly. An electric heating assembly connected to the spiral lift assembly is also installed inside the furnace body. This device offers advantages such as convenient continuous material change and a stable structure.

Description

Technical Field

[0001] The invention belongs to the technical field of graphite preparation, and in particular relates to a carbon-graphite material preparation device. Background Art

[0002] A graphitization furnace is a high-temperature treatment equipment used for sintering and graphitizing carbon materials. It uses the material to be heat-treated directly as a heating element, and current passes directly through the material to generate heat, thereby achieving graphitization. Alternatively, the material is only a heating element, and the heat comes from a heating element outside the material, such as a graphite rod or other conductive material. 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. However, in the actual production process, the degree of graphitization of different carbon materials in the large-scale graphite preparation process is different, and continuous material replacement is relatively inconvenient, which in turn affects the overall production efficiency.

[0003] To address the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, Chinese patent document 202210089339.8 discloses a graphitization furnace, which has a furnace body, a furnace cavity, a negative electrode material outlet at the lower part of the furnace cavity, and a cooling device arranged at the negative electrode material outlet; a negative electrode material input section connected to the upper part of the furnace body, the negative electrode material input section having an input section cavity, the input section cavity communicating with the furnace cavity, a negative electrode material inlet at the upper part of the negative electrode material input section, and the negative electrode material inlet communicating with the input section cavity; and a heat-insulating material accommodating cylinder, which is sleeved outside the furnace body and attached to the outer wall of the furnace body, the heat-insulating material accommodating cylinder having a cylinder cavity, and a heat-insulating material inlet at the upper part of the cylinder cavity.

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

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

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a carbon-graphite material preparation device, comprising a vertical furnace body, a spiral lifting assembly installed inside the vertical furnace body, the spiral lifting assembly drives the heating tank to move up and down along a spiral trajectory, an inlet and outlet assembly opposite to the spiral lifting assembly is installed at the upper end of the vertical furnace body, and an electric heating assembly connected to the spiral lifting assembly 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 on the bottom of the main tank body and the electrode connector is connected to the graphite electrode vertically arranged in the main tank body, and a card slot for inserting a claw is provided on the inner side of the top port of the main tank body.

[0013] In the above-mentioned carbon-graphite material preparation device, the upper and lower ends of the vertical furnace body are respectively connected to ventilation pipes, the top of the vertical furnace body is connected to a vacuum tube, an insulation layer is provided on the inside of the vertical furnace body, and 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 with an inlet and outlet top and circumferentially surrounding the sealing groove, the sealing cover has a sealing strip inserted into the sealing groove, and a sealing conical surface that fits each other is provided between the sealing groove and the sealing strip. The sealing cover and the vertical furnace body are transmission-connected by an opening and closing arm that is linked to the hydraulic push rod.

[0015] In the above-mentioned carbon-graphite material preparation device, a plurality of temperature sensors are built into 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: the spiral lifting component drives the heating tank to move up and down in a circular motion, and the heating tank is replaced by the material inlet and outlet components, thereby improving the continuous graphite processing capacity; the vertical furnace body adopts the electric heating component to directly conduction heat on the carbon material, thereby improving the graphitization efficiency, and 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 uses a vacuum tube to pump pressure or introduce inert gas to ensure the isolation effect of the remaining heating tanks from the outside during the material replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the spiral lifting assembly of the present invention;

[0019] Figure 3 It is a schematic diagram of the track structure of the present invention;

[0020] Figure 4 is a schematic structural diagram of the drive assembly of the present invention;

[0021] Figure 5 It is a partial structural schematic diagram of the present invention;

[0022] Figure 6 is a partial schematic diagram of the drive assembly of the present invention;

[0023] Figure 7 It is a partial cross-sectional view of the feed and discharge assembly of the present invention;

[0024] Figure 8 This is a cross-sectional view of the assembly of the support base and the heating tank of the present invention;

[0025] In the figure, vertical furnace body 1, ventilation pipe 11, vacuum tube 12, thermal insulation layer 13, sealing cover 14, sealing groove 15, sealing strip 16, sealing cone 17, opening and closing arm 18, hydraulic push rod 19, spiral 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, thermal insulation layer 33, electrode joint 34, graphite electrode 35, card slot 36, Feeding and discharging components 4, inlet and outlet 41, lifting screw 42, lifting head 43, electric push rod 44, opening and closing connecting rod 45, clamping claw 46, electric heating component 5, heating electrode 51, power supply conductor 52, support seat 6, main seat body 61, auxiliary seat body 62, drive component 7, outer drive frame 71, inner drive frame 72, track changing frame 73, speed change gear set 74, drive motor 75, outer drive vertical rod 76, inner drive vertical rod 77, drive push rod 78, drive claw 79. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1-8 As shown, a carbon-graphite material preparation device includes a vertical furnace body 1 with a spliced ​​combination structure, a spiral lifting assembly 2 is installed inside the vertical furnace body 1, and the inner side of the vertical furnace body 1 is relatively isolated from the spiral lifting assembly 2. The spiral lifting assembly 2 drives the heating tank 3 to move up and down along a spiral trajectory, and the heating tank 3 adjusts its orientation by cyclic movement. An inlet and outlet assembly 4 is installed at the upper end of the vertical furnace body 1, which is opposite to the spiral lifting assembly 2. The inlet and outlet assembly 4 cooperates with the spiral lifting assembly 2 to realize continuous inlet and outlet of the heating tank 3. An electric heating assembly 5 connected to the spiral lifting assembly 2 is provided 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 continuous material replacement can be realized.

[0028] Specifically, unlike conventional spiral guide roller transmission structures, the spiral lifting assembly 2 in this embodiment includes an outer track 21 and an inner track 22 that extend upward in a vertical spiral. The upper ends of the outer track 21 and the inner track 22 are connected to the feed and discharge assembly 4. The upper and lower ends of the outer track 21 and the inner track 22 form a loop structure, thereby achieving continuous circulation of the heating tank 3. The electric heating time is adjusted according to the amount of carbon material inside the heating tank 3 to ensure its full graphitization. The heating tank 3 is lifted upward along the outer track 21 and the inner track 22, and the feed and discharge assembly 4 at the top removes the fully graphitized carbon material.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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 outer rail 21. 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Although this article uses more vertical furnace body 1, ventilation pipe 11, vacuum tube 12, insulation layer 13, sealing cover 14, sealing groove 15, sealing strip 16, sealing cone 17, opening and closing arm 18, hydraulic push rod 19, spiral lifting component 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, insulation layer 33, electrode joint 34, graphite electrode 35, card slot 36, feeding and discharging component 4 The terms hereinafter include, but are not limited to, inlet / outlet 41, lifting screw 42, lifting head 43, electric push rod 44, opening / closing connecting rod 45, claw 46, electric heating assembly 5, heating electrode 51, power supply conductor 52, support base 6, main base body 61, auxiliary base body 62, driving assembly 7, outer driving frame body 71, inner driving frame body 72, track changing frame body 73, speed change gear set 74, driving motor 75, outer driving upright rod 76, inner driving upright rod 77, driving push rod 78, driving claw 79, etc., but the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations 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 track. A material inlet and outlet assembly (4) opposite to the spiral lifting assembly (2) is installed on the upper end of the vertical furnace body (1). An electric heating assembly (5) connected to the spiral lifting assembly (2) is provided inside the vertical furnace body (1); the spiral lifting assembly (2) includes an outer track (21) and an inner track (22) extending upward in a spiral direction; the outer track (21) and the inner track (22) respectively have a pair of spiral support bars (23). A support seat (6) is slidably mounted on the outer rail (21) and the inner rail (22); 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 bar (23) are rotatably mounted on both sides of the main seat body (61); the preparation device has a driving assembly (7) that provides driving force for each support seat (6) and drives it to move along a spiral track; 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), and the outer driving frame (71) and the inner driving frame (72) are rotatably mounted on the bottom of the vertical furnace body (1). (72) is provided with a track changing frame (73), the outer driving frame (71), the inner driving frame (72) and the track changing frame (73) are connected to the driving motor (75) through a speed change gear set (74); 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, 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, the lower end of the support seat (6) is provided with a driving push rod (78), and the two ends of the driving push rod (78) are respectively provided with a drive rod connected to the outer driving vertical rod (76). or a driving claw (79) engaged with an inner driving vertical rod (77); the upper and lower ends of the outer rail (21) and the inner rail (22) are respectively connected through a transfer rail (24); the rotation center of the rail changing frame (73) is horizontally offset relative to the rotation center of the outer driving frame (71) and the inner driving frame (72), the rotation center of the rail changing frame (73) and the arc center of the transfer rail (24) are on the same vertical central axis, and a plurality of reversing sliders (25) are slidably mounted on the rail changing frame (73), and the reversing sliders (25) are connected to a reversing vertical rod (26) extending in the vertical direction and engaged with the driving claw (79).

2. A carbon-graphite material preparation device according to claim 1, 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.

3. A carbon-graphite material preparation device according to claim 2, characterized in that: 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. The positive and negative circuits are connected to the heating electrodes (51) via power supply conductors (52).

4. The carbon-graphite material preparation device according to claim 1, characterized in that: The material inlet and outlet assembly (4) includes 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 at 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 flipped relative to the lifting head (43) through an opening and closing connecting rod (45).

5. The carbon-graphite material preparation device according to claim 4, characterized in that: The heating tank (3) includes a main tank body (31), the inner side of the main tank body (31) is provided with a heat-resistant layer (32) and the outer side is provided with a heat-insulating layer (33), the bottom of the main tank body (31) is provided with an electrode connector (34) and the electrode connector (34) is connected to a graphite electrode (35) vertically provided in the main tank body (31), and the inner side of the top port of the main tank body (31) is provided with a slot (36) for inserting a claw (46).

6. The carbon-graphite material preparation device according to claim 5, characterized in that: The upper and lower ends of the vertical furnace body (1) are respectively connected to ventilation pipes (11), the top of the vertical furnace body (1) is connected to a vacuum tube (12), the inner side of the vertical furnace body (1) is provided with a heat insulation layer (13), and the inlet and outlet (41) at the upper end of the vertical furnace body (1) is rotatably connected to a sealing cover (14), and a sealing structure that fits and presses against each other is provided between the sealing cover (14) and the inlet and outlet (41).

7. A carbon-graphite material preparation device according to claim 6, characterized in that: The sealing structure includes a sealing groove (15) arranged at the top of the inlet and outlet (41) and surrounding the inlet and outlet in the circumferential direction, the sealing cover (14) has a sealing strip (16) inserted into the sealing groove (15), a sealing cone surface (17) that fits each other is provided between the sealing groove (15) and the sealing strip (16), and an opening and closing arm (18) that is linked to a hydraulic push rod (19) is connected to the sealing cover (14) and the vertical furnace body (1) in a transmission manner.

8. The carbon-graphite material preparation device according to claim 1, characterized in that: The vertical furnace body (1) has a plurality of built-in temperature sensors, and the temperature sensors are arranged radially relative to the spiral lifting assembly (2).

Images