Vacuum high-temperature graphitization furnace

Abstract

The utility model discloses a vacuum high-temperature graphitization furnace, which belongs to the technical field of graphite purification and comprises a plurality of fixedly arranged supporting columns, a furnace seat is fixedly arranged among the supporting columns, a furnace cover is further arranged above the furnace seat among the supporting columns, and the furnace cover and each supporting column are arranged in a sliding manner along the vertical direction. The power device drives the furnace cover to slide up and down; a locking device of the furnace cover and the furnace base is arranged on the furnace base, a limiting device of the locking device is arranged on the furnace base, the limiting device comprises a left side position and a right side position, when the locking device is located at the left side position of the limiting device, the locking device is closed, and the furnace cover can be driven by the power device to slide upwards to open the furnace base. When in use, the furnace cover and the furnace seat are buckled, the furnace cover and the furnace seat are locked by the locking device, and then the limiting device moves to the right side to lock the locking device, so that the locking device is prevented from loosening, the purpose of locking the furnace cover and the furnace seat is realized, and the furnace cover and the furnace seat are not easy to loosen.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite purification, in particular to a vacuum high-temperature graphitization furnace. Background Art

[0002] Graphitization furnace is mainly used for sintering and graphitization of carbon materials, graphitization of PI films, graphitization of thermal conductive materials, sintering of carbon fiber ropes, sintering and graphitization of carbon fiber filaments, purification of graphite powder and other high temperature treatments of materials that can be graphitized in a carbon environment. The operating temperature is up to 3000℃.

[0003] When using the graphitization furnace, first open the furnace cover, put the crucible containing graphite powder into the furnace base, and then slide the furnace cover down so that the furnace cover and the furnace base are buckled. At this time, observe whether the gap between the flanges of the furnace cover and the furnace base is uniform. If it is uneven, it means that the furnace cover is tilted and it is necessary to re-fasten the furnace cover and the furnace base. When the gap between the flanges of the furnace cover and the furnace base is uniform, then tighten the furnace cover through the locking device on the furnace base so that the furnace cover and the furnace base fit tightly and maintain airtightness, then evacuate, and self-check whether there is leakage or whether the pressure rise rate is normal. If it is normal, it means that the airtightness of the furnace cover and the furnace base is qualified, and then heat up, fill with liquid argon after reaching the temperature, and enter repeated vacuum cycles until the impurities in the material are removed.

[0004] The existing locking device of the graphitization furnace includes a handle hinged to the furnace base, and a buckle rod is hinged on the handle. The handle is turned downward so that the buckle rod is buckled on the upper end surface of the flange of the furnace cover to achieve locking of the furnace cover and the furnace base. During use, the locking device is easily loosened by the collision of external force. At the same time, a plurality of locking devices are arranged around the furnace base, and the furnace cover and the furnace base are fastened by each locking device. If one locking device is loose, it is easy to cause the airtightness of the furnace cover and the furnace base to decrease, thereby affecting normal production.

[0005] After searching, the patent number is: CN205973814U, which provides a horizontal square high-temperature graphitization furnace, including a furnace body, a furnace cover and a vacuum pump, the vacuum pump is connected to the furnace body through a vacuum pipe, and a base fixedly connected to the furnace body is provided under the furnace body. The furnace cover is connected to the furnace body through a cover opening device, and an inner support platform fixedly connected to the furnace body is provided inside the furnace body, and a square induction coil is provided on the inner support platform, and both ends of the square induction coil extend outside the furnace body, and a square graphite crucible and a graphite support cup are provided inside the square induction coil, and the square graphite crucible is supported on the graphite support cup.

[0006] The furnace cover and the furnace body in the above scheme are locked by C-shaped fasteners, and it is easy for the locking device to loosen due to collision with external force. At the same time, several locking devices are arranged around the furnace base, and the furnace cover and the furnace base are fastened by each locking device. If one locking device is loose, it is easy to cause the airtightness of the furnace cover and the furnace base to decrease, thereby affecting normal production. Utility Model Content

[0007] The purpose of the utility model is to provide a vacuum high-temperature graphitization furnace, which can effectively lock the furnace cover and the furnace base and has the function of preventing the furnace cover and the furnace base from loosening, thereby solving the problem in the prior art that the locking device is prone to reduce the airtightness of the furnace cover and the furnace base, thereby affecting normal production.

[0008] The utility model adopts the following technical scheme: a vacuum high-temperature graphitization furnace, comprising a plurality of fixed support columns, a furnace base fixedly arranged between the plurality of support columns, a furnace cover arranged above the furnace base between the plurality of support columns, the furnace cover slidingly arranged with each support column along the up-and-down direction, and a power device driving the furnace cover to slide up and down; a locking device for the furnace cover and the furnace base is arranged on the furnace base, a limiting device for the locking device is arranged on the furnace base, the limiting device comprising a left position and a right position, when the locking device is located at the left position of the limiting device, the locking device is closed, and the furnace cover can be driven by the power device to slide upward to open the furnace base; when the locking device is located at the right position of the limiting device, the locking device is opened to realize the locking of the furnace cover and the furnace base that are combined together.

[0009] Furthermore, the locking device includes a plurality of wedge-shaped blocks fixedly arranged at the lower part of the outer surface of the furnace cover along the circumferential direction, and a locking ring rotatably connected to the top of the furnace base.

[0010] Furthermore, a plurality of notches corresponding to the wedge blocks are formed on the upper end surface of the locking ring, and a mortise and tenon matching the wedge blocks are formed on the side wall on the same side of each notch, and a hand lever is fixedly provided on the outer surface of the locking ring.

[0011] Furthermore, the upper end surface of each wedge block is provided with a first inclined surface, and the inner top wall of each mortise and tenon groove is provided with a second inclined surface.

[0012] Furthermore, the limiting device includes a limiting block rotatably arranged with the axis of the locking ring as the axis, and a driving device driving the limiting block to move along a virtual circular surface formed by the axis of the locking ring.

[0013] Furthermore, an arc plate is fixedly arranged between the support columns on both sides of the limit block, the axis of the arc plate coincides with the axis of the locking ring, and the limit block is slidably arranged on the upper end surface of the arc plate along the arc direction of the arc plate.

[0014] Furthermore, the outer surface of the arc plate is provided with teeth, and the driving device includes a worm wheel and a gear rotatably connected to the outer surface of the limit block, the worm wheel and the gear are fixed by a rotating shaft between them, and the gear is meshed with the arc plate through the teeth of the arc plate; the outer surface of the arc plate is rotatably connected to a worm through two side plates fixed to the arc plate, and a force rod is inserted into the right end of the worm.

[0015] Furthermore, a fixing plate is fixedly arranged on the outer surface of the arc-shaped plate, and the rotating shafts of the worm wheel and the gear pass through the fixing plate and are rotationally connected to the fixing plate.

[0016] Furthermore, a pull block corresponding to the support column is fixedly provided on the outer surface of the furnace cover, a guide rod is fixedly provided on the lower end surface of each pull block, and each guide rod is inserted into a vertical hole opened on the upper end surface of the corresponding support column.

[0017] Furthermore, a groove matching the diameter of the hand rod is formed on a side surface of the limit block close to the force rod.

[0018] 1. The utility model provides a locking device and a limiting device so that the furnace cover and the furnace base are buckled together, the furnace cover and the furnace base are locked by the locking device, and then the limiting device is moved to the right position to lock the locking device to prevent the locking device from loosening, thereby achieving the purpose of locking the furnace cover and the furnace base, and has the advantage that the furnace cover and the furnace base are not easy to loosen.

[0019] 2. The utility model provides a locking ring and a wedge block. When in use, the power device drives the furnace cover to slide downward, and each wedge block on the furnace cover enters the corresponding notch. The locking ring is rotated counterclockwise so that each wedge block enters the corresponding mortise and tenon, thereby achieving the purpose of fastening the locking ring and each wedge block, thereby achieving the locking of the furnace cover and the furnace base. Then, the limiting device is further rotated counterclockwise to move the limiting device to the right position, so that the limiting device locks the position of the hand lever of the locking ring to prevent the locking ring from rotating accidentally. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the locking device in the utility model locking the furnace cover and the furnace base;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the furnace cover and furnace base in the utility model in the upper and lower separated states;

[0023] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the locking ring in the utility model;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the furnace base in the utility model;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the locking ring in the utility model;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the curved plate in the utility model;

[0027] Figure 8 For the utility model Figure 7 A schematic diagram of the structure enlargement at point A;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the limit block in the utility model.

[0029] In the figure, 1, support column; 2, furnace base; 3, furnace cover; 4, crucible; 5, limit device; 6, wedge block; 7, locking ring; 8, notch; 9, mortise and tenon; 10, hand lever; 11, limit block; 12, arc plate; 13, worm gear; 14, gear; 16, side plate; 17, worm; 18, force rod; 19, pull block; 20, guide rod; 21, nose block; 22, diagonal support rod; 23, platform; 24, fixed plate. DETAILED DESCRIPTION

[0030] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0031] See also Figure 1-9 The vacuum high-temperature graphitization furnace of the utility model comprises a plurality of fixed support columns 1, a furnace seat 2 is fixedly arranged between the plurality of support columns 1, a furnace cover 3 is arranged above the furnace seat 2 between the plurality of support columns 1, and the furnace cover 3 is arranged to slide with each support column 1 in the up-down direction. The furnace seat 2 can be opened by driving the furnace cover 3 to slide upward by a power device so as to put a crucible 4 into the furnace seat 2, and then the furnace cover 3 is slid downward so that the furnace cover 3 is buckled with the furnace seat 2 to realize the closing of the furnace cover 3 and the furnace seat 2; the furnace seat 2 is also provided with a furnace cover 3 and The locking device of the furnace base 2, when the furnace cover 3 and the furnace base 2 are closed, the furnace cover 3 and the furnace base 2 are locked by the locking device, so as to achieve the sealing of the furnace cover 3 and the furnace base 2, and facilitate the vacuuming of the furnace cover 3 and the furnace base 2. A limiting device 5 of the locking device is arranged on the furnace base 2. When the locking device is located at the left position of the limiting device 5, the locking device fails, and the furnace cover 3 can be driven by the power device to slide upward to open the furnace base 2; when the locking device is located at the right position of the limiting device 5, the locking device is opened to achieve the locking of the furnace cover 3 and the furnace base 2 that are closed together.

[0032] When in use, first, the power device drives the furnace cover 3 to slide upward to open the furnace base 2, then the crucible 4 containing graphite powder is placed in the furnace base 2, and then the power device drives the furnace cover 3 to slide downward so that the furnace cover 3 and the furnace base 2 are buckled, and the furnace cover 3 and the furnace base 2 are locked by the locking device, and then the limit device 5 moves to the right position to lock the locking device to prevent the locking device from loosening, thereby achieving the purpose of locking the furnace cover 3 and the furnace base 2.

[0033] In this embodiment, the locking device includes a plurality of wedge blocks 6 fixedly arranged at the lower part of the outer surface of the furnace cover 3 along the circumferential direction, and a locking ring 7 rotatably connected to the top of the furnace base 2. The upper end surface of the locking ring 7 is provided with a plurality of notches 8 corresponding to the wedge blocks 6, and the side wall on the same side of each notch 8 is provided with a tongue 9 adapted to the wedge block 6. A hand lever 10 is fixedly provided on the outer surface of the locking ring 7. When in use, the power device drives the furnace cover 3 to slide downward, and each wedge block 6 on the furnace cover 3 enters the corresponding notch 8. Based on the angle of the top view, the locking ring 7 is rotated counterclockwise so that each wedge block 6 enters the corresponding tongue 9, so as to achieve the purpose of fastening the locking ring 7 with each wedge block 6. To achieve the locking of the furnace cover 3 and the furnace base 2, the limiting device 5 is rotated counterclockwise at this time so that the limiting device 5 is located at the right position, so that the limiting device 5 locks the position of the hand lever 10 of the locking ring 7 to prevent the locking ring 7 from rotating accidentally; when the furnace cover 3 needs to be opened, the limiting device 5 is first moved to the left so that the limiting device 5 is located at the left position, and then the locking ring 7 is rotated clockwise so that the hand lever 10 of the locking ring 7 moves to the left position of the limiting device 5. At this time, each wedge block 6 is located in the corresponding notch 8, and then the furnace cover 3 is driven to move upward by the power device, and each wedge block 6 is disengaged from the corresponding notch 8 upward from the notch 8, thereby achieving the purpose of separating the furnace cover 3 and the furnace base 2 up and down.

[0034] In this embodiment, the upper end surface of each wedge block 6 is provided with a first inclined surface, and the inner top wall of each tenon groove 9 is provided with a second inclined surface; when the locking ring 7 is rotated counterclockwise so that each wedge block 6 enters the corresponding tenon groove 9, the first inclined surface of the wedge block 6 and the second inclined surface of the tenon groove 9 fit together, so that the locking ring 7 cooperates with the first inclined surface of each wedge block 6 through the second inclined surface to lock the wedge block 6.

[0035] In this embodiment, the limit device 5 includes a limit block 11 rotatably arranged with the axis of the locking ring 7 as the axis, and a driving device for driving the limit block 11 to move along a virtual circular surface formed by the axis of the locking ring 7. The driving device drives the limit block 11 to move to the right position, and the limit block 11 can interfere with the hand lever 10 to prevent the locking ring 7 from rotating clockwise and causing the locking ring 7 and the wedge block 6 to loosen; the driving device drives the limit block 11 to move to the left position. At this time, the hand lever 10 is rotated clockwise to drive the locking ring 7 to rotate. When the hand lever 10 is rotated to interfere with the limit block 11, it means that each wedge block 6 is located in the corresponding notch 8. At this time, the furnace cover 3 can be driven to move upward by the power device to achieve the purpose of opening the furnace base 2.

[0036] In this embodiment, an arc plate 12 is fixedly arranged between the support columns 1 on both sides of the limit block 11, the axis of the arc plate 12 coincides with the axis of the locking ring 7, the limit block 11 is slidably arranged on the upper end surface of the arc plate 12 along the arc direction of the arc plate 12, and the outer surface of the arc plate 12 is provided with teeth, and the driving device includes a worm wheel 13 and a gear 14 rotatably connected to the outer surface of the limit block 11, the worm wheel 13 and the gear 14 are fixedly arranged through the rotating shaft between them, and the gear 14 passes through the arc plate 12 The teeth of the curved plate 12 mesh with the curved plate 12; the outer surface of the curved plate 12 is rotatably connected with a worm 17 through two side plates 16 fixed to the curved plate 12, and a force rod 18 is inserted at the right end of the worm 17. The force rod 18 can easily rotate the worm 17, thereby driving the worm wheel 13 and the gear 14 to rotate, and the gear 14 meshes with the teeth of the curved plate 12, and the gear 14 rotates and moves on the outer surface of the curved plate 12, thereby driving the limit block 11 to move; when the hand lever 10 is reversed After the needle rotates the locking ring 7 to lock each wedge block 6, the force rod 18 is turned, and the force rod 18 drives the gear 14 to rotate through the worm 17, the worm wheel 13 and the rotating shaft in turn. The gear 14 rotates and moves on the outer surface of the arc plate 12, so that the limit block 11 moves in the direction of the hand rod 10 until the limit block 11 conflicts with the hand rod 10, thereby preventing the hand rod 10 and the locking ring 7 from rotating clockwise, thereby preventing the locking ring 7 and the wedge block 6 from loosening; at this time, the limit block 11 is located at the limit The right side position of the limiting device 5 is not a point, but a range. The position of the hand lever 10 after the locking ring 7 locks each wedge block 6 corresponds to the right side position of the limiting device 5 at this time; when the furnace cover 3 needs to be opened, the limiting block 11 is first driven to move to the left side position by turning the power rod 18. When the limiting block 11 conflicts with the corresponding support column 1, that is, the left side position of the limiting device 5, the furnace cover 3 is then driven to move upward by the power device.

[0037] In this embodiment, a fixing plate 24 is fixedly provided on the outer surface of the arc plate 12, and the rotating shafts of the worm wheel 13 and the gear 14 pass through the fixing plate 24 and are rotationally connected to the fixing plate 24; the rotating shafts of the worm wheel 13 and the gear 14 are rotationally connected to the arc plate 12 through the fixing plate 24.

[0038] In order to achieve the purpose of better limiting the hand rod 10 by the limit block 11, in this embodiment, a groove adapted to the diameter of the hand rod 10 is opened on the side of the limit block 11 close to the force rod 18; the hand rod 10 can partially enter the groove to achieve the limiting of the hand rod 10 by the limit block 11.

[0039] In order to achieve the purpose of the furnace cover 3 being set to slide up and down with each support column 1, in this embodiment, the outer surface of the furnace cover 3 is fixedly provided with a pull block 19 corresponding to the support column 1, and the lower end surface of each pull block 19 is fixedly provided with a guide rod 20, and each guide rod 20 is inserted into the vertical hole opened on the upper end surface of the corresponding support column 1. When the furnace cover 3 moves up and down, the furnace cover 3 drives each guide rod 20 to slide up and down in the vertical hole of the corresponding support column 1, thereby achieving the purpose of the furnace cover 3 being slidably connected with each support column 1 in the up and down direction.

[0040] In this embodiment, the power device can adopt a fixed pulley and a cable shaft fixed on the roof. The cable on the cable shaft is passed through the upper side of the fixed pulley, and then tied downward to the nose block 21 at the top of the furnace cover 3. The cable shaft is driven to rotate by a motor, so that the cable shaft retracts the cable, which can drive the furnace cover 3 to move upward, and the cable shaft releases the cable, so that the furnace cover 3 can move downward under the action of gravity. The power device is an existing technology, as shown in the figure.

[0041] In this embodiment, a platform 23 is fixedly provided above the support column 1 through an inclined support rod 22. A through hole is provided on the upper end surface of the platform 23 to allow the furnace cover 3 to move up and down. When the furnace cover 3 moves up and down, the furnace cover 3 moves up and down in the through hole of the platform 23. In order to facilitate personnel to go up and down the platform 23, an inclined ladder can be set on the side to facilitate climbing and facilitate personnel to inspect and maintain the equipment.

[0042] The working principle of the utility model is as follows: first, the limit block 11 is driven to move leftward by rotating the force rod 18 until it contacts with the corresponding support column 1, so that the limit block 11 moves to the left position, and then the locking ring 7 rotates clockwise. At this time, the wedge blocks 6 are all located in the corresponding notches 8, and then the cable shaft is driven by the motor to rotate the cable reel, so that the furnace cover 3 moves upward, the furnace seat 2 is opened, and then the crucible 4 containing graphite powder is placed in the furnace seat 2, and then the furnace cover 3 is released by the motor to move downward, so that the furnace cover 3 is buckled with the furnace seat 2, and then the hand lever 10 is rotated counterclockwise to drive the locking ring 7 to rotate, so that the locking ring 7 locks each wedge block 6, and then the limit block 11 is driven to move to the right position by the force rod 18, so that the limit block 11 contacts the hand lever 10, preventing the locking ring 7 from rotating clockwise, avoiding the loosening of the locking ring 7 and the wedge block 6, and ensuring the airtightness of the furnace cover 3 and the furnace seat 2.

Claims

1. A vacuum high temperature graphitization furnace, characterized in that: The invention comprises a plurality of fixed support columns (1), a furnace base (2) being fixedly arranged between the plurality of support columns (1), a furnace cover (3) being arranged above the furnace base (2) between the plurality of support columns (1), the furnace cover (3) being arranged to slide with each support column (1) in an up-down direction, and a power device driving the furnace cover (3) to slide up-down; a locking device for the furnace cover (3) and the furnace base (2) being arranged on the furnace base (2), and a limiting device (5) of the locking device being arranged on the furnace base (2); when the locking device is located at the left side of the limiting device (5), the locking device fails, and the power device drives the furnace cover (3) to slide upward, thereby opening the furnace base (2); when the locking device is located at the right side of the limiting device (5), the locking device is opened, and the locking device locks the furnace cover (3) and the furnace base (2).

2. The vacuum high temperature graphitization furnace according to claim 1, characterized in that: The locking device comprises a plurality of wedge-shaped blocks (6) fixedly arranged at the lower part of the outer surface of the furnace cover (3) along the circumferential direction, and a locking ring (7) rotatably connected to the top of the furnace base (2).

3. The vacuum high temperature graphitization furnace according to claim 2, characterized in that: The upper end surface of the locking ring (7) is provided with a plurality of notches (8) corresponding to the wedge-shaped blocks (6), and the side wall on the same side of each notch (8) is provided with a tongue (9) adapted to the wedge-shaped block (6). A hand lever (10) is fixedly provided on the outer surface of the locking ring (7).

4. The vacuum high temperature graphitization furnace according to claim 3, characterized in that: The upper end surface of each wedge-shaped block (6) is provided with a first inclined surface, and the inner top wall of each tenon groove (9) is provided with a second inclined surface.

5. The vacuum high temperature graphitization furnace according to claim 3, characterized in that: The limiting device (5) comprises a limiting block (11) rotatably arranged with the axis of the locking ring (7) as an axis, and a driving device for driving the limiting block (11) to move along a virtual circular surface formed by the axis of the locking ring (7).

6. The vacuum high temperature graphitization furnace according to claim 5, characterized in that: An arc-shaped plate (12) is fixedly arranged between the support columns (1) on both sides of the limit block (11), the axis of the arc-shaped plate (12) coincides with the axis of the locking ring (7), and the limit block (11) is slidably arranged on the upper end surface of the arc-shaped plate (12) along the arc direction of the arc-shaped plate (12).

7. The vacuum high temperature graphitization furnace according to claim 6, characterized in that: The outer surface of the arc plate (12) is provided with teeth, and the driving device comprises a worm wheel (13) and a gear wheel (14) rotatably connected to the outer surface of the limit block (11), the worm wheel (13) and the gear wheel (14) being fixedly arranged via a rotating shaft therebetween, and the gear wheel (14) meshing with the arc plate (12) via the teeth of the arc plate (12); the outer surface of the arc plate (12) is rotatably connected to a worm (17) via two side plates (16) fixedly arranged with the arc plate (12), and a force rod (18) is inserted into the right end of the worm wheel (17).

8. The vacuum high temperature graphitization furnace according to claim 7, characterized in that: A fixing plate (24) is fixedly arranged on the outer surface of the arc-shaped plate (12); the rotating shafts of the worm wheel (13) and the gear (14) pass through the fixing plate (24) and are rotationally connected to the fixing plate (24).

9. The vacuum high temperature graphitization furnace according to claim 1, characterized in that: The outer surface of the furnace cover (3) is fixedly provided with a pull block (19) corresponding to the support column (1), and the lower end surface of each pull block (19) is fixedly provided with a guide rod (20), and each guide rod (20) is inserted into a vertical hole opened in the upper end surface of the corresponding support column (1).

10. The vacuum high temperature graphitization furnace according to claim 7, characterized in that: A groove matching the diameter of the hand rod (10) is formed on a side surface of the limit block (11) close to the force rod (18).

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