Crucible for graphitization

Abstract

The utility model belongs to the technical field of crucibles, and discloses a crucible for graphitization. The crucible for graphitization comprises a crucible body, a containing cavity is formed in the crucible body and used for storing a to-be-processed material, the crucible body comprises a hollow pipe and a bottom arranged at the containing cavity in a protruding mode, the hollow pipe is located in the containing cavity, the bottom of the crucible body inclines from the edge to the center to form an inclined face, and the inclined face is connected with the first end of the hollow pipe; a grabbing device can penetrate through a channel in the hollow pipe and can make contact with the inclined face. According to the crucible for graphitization provided by the utility model, the crucible for graphitization can be prevented from overturning and sliding down when being grabbed due to uneven stress or other accidental factors, and the grabbing stability of the crucible for graphitization is improved.

Description

Technical Field

[0001] This utility model relates to the field of crucible technology, and in particular to a crucible for graphitization. Background Technology

[0002] Graphitization of carbon materials is an indispensable process in the research and development and production of anode materials. The graphitization process involves loading the material into a crucible, placing it in a graphitization furnace for heating, and then removing the crucible after graphitization. Typically, the crucible is removed using clamps to hold its outer wall. However, due to the crucible's prolonged exposure to alternating hot and cold temperatures, the outer wall becomes brittle, leading to the crucible falling or becoming impossible to hold during removal. Current technology usually involves placing an edge at the top of the crucible's outer wall, away from the center, to grip and lift the crucible. However, due to the limited capacity of the graphitization furnace, gripping the edge may cause it to hit the inner wall of the furnace, resulting in the crucible tipping over. Furthermore, the edge is thin and easily breaks during gripping, causing the crucible to fall during lifting.

[0003] Therefore, there is an urgent need for a graphitization crucible that can prevent the crucible from tipping over during handling and ensure stable handling. Utility Model Content

[0004] The purpose of this invention is to provide a crucible for graphitization. It can prevent the crucible from tipping over or slipping during handling due to uneven force or other unexpected factors, thus improving the stability of handling the crucible.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Graphitization crucibles, including:

[0007] The crucible body has a receiving cavity inside, which is used to store the material to be processed. The crucible body includes a hollow tube protruding from the bottom of the receiving cavity. The hollow tube is located inside the receiving cavity. The bottom of the crucible body slopes from the edge to the center to form an inclined surface, which is connected to the first end of the hollow tube.

[0008] The hollow tube channel can be fitted with a gripping device, and the gripping device can contact the inclined surface.

[0009] As a preferred embodiment, the hollow tube extends along the extension direction of the crucible body, and the second end of the hollow tube is not higher than the top of the crucible body along the extension direction of the hollow tube.

[0010] As a preferred embodiment, the inclined surface is inclined from the first end of the hollow tube toward the second end of the hollow tube.

[0011] As a preferred embodiment, the hollow tube protrudes from the center of the bottom of the receiving cavity.

[0012] As a preferred embodiment, the bottom edge of the crucible body is rounded.

[0013] As a preferred embodiment, the crucible body is made of carbon-based material.

[0014] As a preferred embodiment, the crucible body is cylindrical.

[0015] As a preferred embodiment, the graphitization crucible further includes:

[0016] A crucible lid is provided, which can be placed on the crucible body. The crucible lid has a connecting hole that communicates with the hollow tube.

[0017] As a preferred embodiment, along the extension direction perpendicular to the crucible body, the size of the connecting hole is greater than or equal to the inner wall size of the hollow tube, and the size of the connecting hole is smaller than the outer wall size of the hollow tube.

[0018] As a preferred embodiment, the crucible lid is circular.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a graphitization crucible, which includes a crucible body with a receiving cavity for storing materials to be processed. The crucible body includes a hollow tube protruding from the bottom of the receiving cavity and located within the cavity. The bottom of the crucible body slopes from the edge to the center, forming an inclined surface. The inclined surface is connected to the first end of the hollow tube. A gripping device can pass through a channel inside the hollow tube and can contact the inclined surface. When the graphitization crucible is gripped, the gripping device passes through the channel inside the hollow tube. Due to the inclined surface design at the bottom of the crucible body, the gripping device can contact the inclined surface at the bottom of the crucible body when lifting it, ensuring a stable and secure grip. The design of the crucible body prevents the graphitization crucible from shaking or slipping during gripping due to uneven force or other unexpected factors, thus improving the stability of gripping the graphitization crucible. Attached Figure Description

[0021] Figure 1 This is an isometric view of the graphitization crucible provided in this embodiment of the utility model;

[0022] Figure 2 This is a cross-sectional view of the graphitization crucible provided in this embodiment of the utility model;

[0023] Figure 3 This is a first isometric view of the gripping device (folding gripper) provided in this embodiment of the present invention;

[0024] Figure 4 This is a second isometric view of the gripping device (gripper unfolded) provided in this embodiment of the present invention;

[0025] Figure 5 This is an isometric view of the gripper provided in this embodiment of the utility model;

[0026] Figure 6 This is a cross-sectional view of the gripping device and crucible provided in this embodiment of the utility model.

[0027] In the picture:

[0028] 1. Crucible for graphitization; 11. Crucible body; 111. Receiving cavity; 112. Hollow tube; 113. Inclined surface; 12. Crucible lid; 121. Connecting hole;

[0029] 2. Sleeve; 21. Sleeve body; 211. First limiting groove; 212. Sliding groove; 213. Second limiting groove; 22. Connecting ring; 221. Connecting position;

[0030] 3. Sliding rod; 31. Sliding rod body; 32. Limiting plate; 33. Handle; 34. Limiting component;

[0031] 4. Gripper; 41. First knuckle; 411. First main body; 412. First arc portion; 413. Limiting portion; 414. First roller; 42. Second knuckle; 421. Second main body; 422. Second arc portion; 423. Second roller; 43. Buffer pad. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] The graphitization crucible 1 is an indispensable part in the graphitization process of carbon materials. The material to be processed is usually placed in the graphitization crucible 1 and graphitized in the graphitization furnace. After processing, the graphitization crucible 1 needs to be lifted out of the graphitization furnace. In the prior art, the outer wall of the graphitization crucible 1 is usually grasped or the top edge of the outer wall of the graphitization crucible 1 away from the center of the crucible is grasped. However, the above settings will cause problems when grasping the graphitization crucible 1 that has been used for a long time, such as not being able to grasp the graphitization crucible 1 or the graphitization crucible 1 tilting or falling during the lifting process.

[0038] To address the aforementioned problems, this embodiment provides a graphitization crucible 1, such as... Figure 1 and Figure 2 As shown, the graphitization crucible 1 includes a crucible body 11, and a receiving cavity 111 is provided inside the crucible body 11. The receiving cavity 111 is used to store the material to be processed. The crucible body 11 includes a hollow tube 112, which protrudes from the bottom of the receiving cavity 111. The hollow tube 112 is located inside the receiving cavity 111. The bottom of the crucible body 11 is inclined from the edge to the center to form an inclined surface 113. The inclined surface 113 is connected to the first end of the hollow tube 112. A gripping device (not shown in the figure) can be inserted through the channel inside the hollow tube 112, and the gripping device can contact the inclined surface 113.

[0039] When the graphitization crucible 1 is grasped, the grasping device passes through the channel inside the hollow tube 112. Due to the design of the inclined surface 113 at the bottom of the crucible body 11, the grasping device can contact the inclined surface 113 at the bottom of the crucible body 11 when lifting the graphitization crucible 1, ensuring a stable and firm grasp. The design of the crucible body 11 prevents the graphitization crucible 1 from tipping over or slipping during grasping due to uneven force or other unexpected factors, thus improving the stability of grasping the graphitization crucible 1. It should be noted that in this embodiment, the grasping device can abut against or engage with the inclined surface 113, etc., and this embodiment is not limited to this.

[0040] Optionally, such as Figure 1 As shown, in this embodiment, the crucible body 11 is cylindrical. In other embodiments, the crucible body 11 may also be a square crucible, etc. No limitation is made here.

[0041] Optionally, in this embodiment, the crucible body 11 is made of a carbon-based material. Carbon materials have excellent high-temperature mechanical properties and thermal conductivity. It should be noted that in this embodiment, the crucible body 11 is made of graphite. In other embodiments, the crucible body 11 may also be made of glassy carbon or silicon carbide, etc., and there is no limitation herein.

[0042] Optionally, in this embodiment, the hollow tube 112 is a circular tube. In other embodiments, the hollow tube 112 may also be a square tube, and there is no limitation on this.

[0043] Furthermore, such as Figure 2 As shown, the hollow tube 112 extends along the extending direction of the crucible body 11, and the second end of the hollow tube 112 does not exceed the top of the crucible body 11 along this extending direction. This ensures that the hollow tube 112 is completely within the crucible body 11, preventing heat loss during graphitization. It should be noted that the extending direction of the crucible body 11 is... Figure 2 The vertical direction in the figure is also the axial direction of the crucible body 11.

[0044] Optionally, such as Figure 2 As shown, in this embodiment, the second end of the hollow tube 112 is flush with the top of the crucible body 11 along its extending direction. This improves the capacity of the accommodating cavity 111 and simplifies the manufacturing process of the crucible body 11. In other embodiments, the second end of the hollow tube 112 may be lower than the top of the crucible body 11. No limitation is imposed here.

[0045] Optionally, such as Figure 2As shown, in this embodiment, the inclined surface 113 is inclined from the first end of the hollow tube 112 towards the second end of the hollow tube 112. This arrangement creates a gripping space between the inclined surface 113 and the placement plane of the crucible body 11, facilitating the operation of the gripping device and improving the reliability of gripping the crucible body 11. In other embodiments, the inclined surface 113 may also be inclined from the second end of the hollow tube 112 towards the first end of the hollow tube 112. No limitation is imposed here.

[0046] Optionally, such as Figure 2 As shown, in this embodiment, the hollow tube 112 protrudes from the center of the bottom of the receiving cavity 111. This allows the gripping device to pass through the center of the crucible body 11 and grip and lift it. The hollow tube 112, located at the center of the bottom, ensures that the force on the crucible is evenly distributed across the crucible body during gripping or lifting, maximizing the stability of the crucible. In other embodiments, the hollow tube 112 can protrude from any position on the bottom of the receiving cavity 111. No limitation is imposed here.

[0047] Optionally, in this embodiment, the bottom edge of the crucible body 11 is rounded. This reduces stress concentration, making the graphitization crucible 1 more durable during use and preventing injury to operators. In other embodiments, the bottom edge of the crucible body 11 may also be chamfered. No limitation is imposed here.

[0048] Furthermore, such as Figure 1 and Figure 2 As shown, the graphitization crucible 1 also includes a crucible lid 12, which can be placed on the crucible body 11. The lid 12 has a connecting hole 121 that communicates with a hollow tube 112. When the lid 12 is placed on the crucible body 11, the connecting hole 121 communicates with the hollow tube 112, allowing the gripping device to pass through the connecting hole 121 and the hollow tube 112 to reach the inclined surface 113 and then grip the graphitization crucible 1. This design effectively prevents the intrusion of external impurities and maintains the stability of the internal environment of the crucible body 11 to a certain extent, while ensuring that the crucible body 11 can be gripped and lifted.

[0049] Optionally, such as Figure 1 and Figure 2 As shown, in this embodiment, the crucible lid 12 is annular. In other embodiments, the crucible lid 12 can also be square annular, etc., and there is no limitation here.

[0050] Optionally, in this embodiment, the crucible lid 12 and the crucible body 11 are made of the same material, that is, both the crucible lid 12 and the crucible body 11 are made of graphite. Using the same material reduces the risk of damage caused by uneven thermal expansion and contraction, and the same material has similar properties in resisting chemical corrosion, improving the overall durability of the graphitization crucible 1. In other embodiments, the crucible lid 12 and the crucible body 11 may also be made entirely of the same material. No limitation is imposed here.

[0051] Furthermore, such as Figure 2 As shown, along the extension direction perpendicular to the crucible body 11, the size of the connecting hole 121 is greater than or equal to the inner wall size of the hollow tube 112, and the size of the connecting hole 121 is smaller than the outer wall size of the hollow tube 112. This arrangement allows the crucible lid 12 to completely cover the hollow tube 112, preventing heat loss between the crucible lid 12 and the hollow tube 112 during graphitization. It should be noted that the extension direction perpendicular to the crucible body 11 is... Figure 2 The horizontal direction is also the radial direction of the crucible body 11.

[0052] Optional, such as Figure 2 As shown, in this embodiment, the diameter of the connecting hole 121 is equal to the inner diameter of the hollow tube 112. This facilitates the insertion of the gripping device. In other embodiments, the diameter of the connecting hole 121 can be larger than the inner diameter of the hollow tube 112 and smaller than the outer diameter of the hollow tube 112, that is, the diameter of the connecting hole 121 can be anywhere between the inner and outer diameters of the hollow tube 112. No limitation is imposed here.

[0053] This embodiment illustrates a gripping device that can be used in conjunction with a graphitization crucible 1, such as... Figures 3-4 As shown, it includes a sliding rod 3, a sleeve 2, and multiple grippers 4. The sliding rod 3 includes a sliding rod body 31 and a limiting plate 32. The limiting plate 32 is located at one end of the sliding rod body 31, and the outer diameter of the limiting plate 32 is larger than the outer diameter of the sliding rod body 31. The sleeve 2 is slidably sleeved on the outer periphery of the sliding rod body 31. The grippers 4 can be folded in one direction. The grippers 4 are arranged at intervals along the circumferential direction of the sleeve 2 and are rotatably connected to the sleeve 2. The grippers 4 have a first state and a second state relative to the sliding rod 3. When the grippers 4 are in the first state, the grippers 4 are folded and can be inserted into or removed from the hollow tube 112. When the grippers 4 are in the second state, the grippers 4 are unfolded and abut against the limiting plate 32 and the inclined surface 113.

[0054] When the gripper 4 is in the first state, the sleeve 2 slides to fold the gripper 4, allowing it to extend into or out of the hollow tube 112. When the gripper 4 is in the second state, it unfolds, abutting against the limiting plate 32 and the inclined surface 113. The limiting plate 32 provides support for the gripper 4 in the unfolded state. Multiple grippers 4 simultaneously grasp the bottom wall of the graphitization crucible 1, ensuring that the grippers 4 can evenly bear the weight of the graphitization crucible 1 from the bottom, thus guaranteeing the stability of the gripper 4 when grasping the graphitization crucible 1 and preventing it from tipping over. The two states of the gripper 4 also contribute to the high fault tolerance of the gripping device. It should be noted that in this embodiment, the sliding rod body 31 extends vertically. In other embodiments, the sliding rod body 31 may extend horizontally, etc., and this is not a limitation.

[0055] Specifically, such as Figure 4 As shown, in this embodiment, when the gripper 4 is in the second state, the bottom of the gripper 4 abuts against the limiting disk 32, and the top of part of the gripper 4 abuts against the bottom wall of the graphitization crucible 1. In other embodiments, the bottom and side wall of the gripper 4 may both abut against the limiting disk 32, and the other side wall of the gripper 4 may abut against the bottom wall of the graphitization crucible 1; this is not a limitation.

[0056] Optionally, such as Figures 3-6 As shown, in this embodiment, three grippers 4 are provided, and the three grippers 4 are arranged at intervals along the circumferential direction of the sleeve 2. More specifically, in this embodiment, the three grippers 4 are arranged at uniform intervals along the circumferential direction of the sleeve 2. In other embodiments, the grippers 4 can also be two, four, five, or six, etc. The interval between two adjacent grippers 4 can be set uniformly or non-uniformly as needed. It is understood that, in order to better maintain the balance when handling the graphitization crucible 1, it is preferable that the grippers 4 are arranged at uniform intervals along the circumferential direction of the sleeve 2, which will not be elaborated further here.

[0057] Optionally, such as Figures 3-5 As shown, in this embodiment, the gripper 4 includes a first phalanx 41 and a second phalanx 42. The first phalanx 41 includes a first main body portion 411 and a first arc portion 412 fixedly connected. The first end of the first main body portion 411 is rotatably connected to the sleeve 2. The first main body portion 411 extends toward the first arc portion 412 to form a limiting portion 413. The second phalanx 42 includes a second main body portion 421 and a second arc portion 422 fixedly connected. The first end of the second main body portion 421 is rotatably connected to the first arc portion 412. The second main body portion 421 can abut against the limiting portion 413. The connected first main body portion 411 and second main body portion 421 can rotate in the plane containing the axial direction of the sleeve 2. It should be noted that the axial direction of the sleeve 2 in this embodiment is the vertical direction.

[0058] The first end of the first main body 411 is rotatably connected to the sleeve 2, and the first end of the second main body 421 is rotatably connected to the first arc portion 412. After connection, the first main body 411 and the second main body 421 can rotate in the vertical direction, so that the first main body 411 can rotate in the vertical direction with the sleeve 2 as the axis, and the second main body 421 can rotate flexibly relative to the first main body 411. The rotational connection between the two can realize the gripping and placement of the gripper 4. In addition, the first main body 411 extends toward the first arc portion 412 to form a limiting portion 413, and the second main body 421 can abut against the limiting portion 413. When the gripper 4 unfolds, the second finger joint 42 rotates and first contacts the ground, then moves away from the sleeve 2. This drives the first finger joint 41 to move away from the sleeve 2. When the second main body 421 comes into contact with the limiting part 413, the second main body 421 stops rotating. At this time, the second main body 421 rotates along with the first main body 411, so that when the gripper 4 grips the bottom wall of the graphitization crucible 1, it provides support for the bottom of the crucible body 11. It also ensures the vertical stability of the gripper 4 when gripping the graphitization crucible 1. The limiting part 413 restricts and positions the range of motion and state of the gripper 4.

[0059] Optionally, such as Figures 3-5 As shown, in this embodiment, multiple first finger joints 41 are provided, and the multiple first finger joints 41 are rotatably connected in sequence. The first end of the first main body portion 411 of the first first finger joint 41 is rotatably connected to the sleeve 2. The first main body portion 411 of the latter of two adjacent first finger joints 41 can abut against the limiting portion 413 of the former first finger joint 41. The first end of the second main body portion 421 is rotatably connected to the first arc portion 412 of the last first finger joint 41, and the second main body portion 421 can abut against the limiting portion 413 of the last first finger joint 41. The arrangement of multiple first finger joints 41 enables the gripper 4 to grasp crucibles 1 for graphitization of different sizes, improving the adaptability of the gripping device. Specifically, as shown... Figures 2-4 As shown, in this embodiment, there are two first phalanges 41. In other embodiments, there may be one, three, or four first phalanges 41, etc., which is not limited here.

[0060] Optionally, such as Figure 5As shown, in this embodiment, one end of the limiting part 413 is fixedly connected to the first main body part 411, and the other end of the limiting part 413 is set at an angle to one end of the limiting part 413, and the other end of the limiting part 413 is rotatably connected to the first roller 414. The setting of the limiting part 413 makes the direction of the first main body part 411 from the first end to the first arc part 412 longer again. When the gripper 4 switches from the first state to the second state, the first main body part 411 moves away from the sleeve 2 relative to the sleeve 2. The limiting part 413 contacts the ground before the first main body part 411. The limiting part 413 provides guidance and direction for the first main body part 411, and the first roller 414 rotatably connected to the limiting part 413 can provide guidance for the movement of the first main body part 411 on the ground, making the movement of the first main body part 411 smoother. Specifically, in this embodiment, the first roller 414 is in the form of a bearing roller, making the rotation of the first roller 414 smoother. In other embodiments, the form of the first roller 414 is not limited.

[0061] Optionally, such as Figure 5 As shown, in this embodiment, the limiting part 413 has an L-shaped structure, with its long side fixedly connected to the first main body part 411, and its short side rotatably connected to the first roller 414. In other embodiments, the limiting part 413 may also have a V-shaped structure, etc., which is not limited here.

[0062] Optionally, such as Figure 5 As shown, in this embodiment, the side of the limiting portion 413 is tangent to the first arc portion 412. This arrangement makes the structure of the first phalanx 41 more compact.

[0063] Optionally, such as Figure 5 As shown, the second phalanx 42 includes a second roller 423, which is rotatably connected to the second arcuate portion 422. When the gripper 4 switches from the first state to the second state, the second phalanx 42 contacts the ground. The second roller 423 not only guides the movement of the second phalanx 42 on the ground but also protects the second arcuate portion 422 from wear during movement. Optionally, in this embodiment, the second roller 423 is in the form of a bearing roller, making its rotation smoother. In other embodiments, the form of the second roller 423 is not limited.

[0064] Optionally, such as Figures 2-6As shown, buffer pads 43 are fixedly connected to both the first main body 411 and the second main body 421. The buffer pads 43 protect the first and second main body 411 from wear when in contact with the bottom wall of the graphitization crucible 1, and also prevent rigid impact on the bottom wall of the graphitization crucible 1 when it is gripped. It should be noted that in this embodiment, the buffer pad 43 is made of high-temperature rubber, which is stable at high temperatures and not easily deformed. In other embodiments, the material of the buffer pad 43 is not limited and can be silicone or ceramic fiber, etc.

[0065] Optionally, such as Figures 2-6 As shown, the sleeve 2 includes a sleeve body 21 and a connecting ring 22. The sleeve body 21 is slidably sleeved on the outer periphery of the sliding rod body 31, and the connecting ring 22 is coaxially sleeved on the end of the sleeve body 21. The connecting ring 22 is provided with multiple connecting positions 221, which are spaced apart along the circumferential direction of the sleeve body 21. The gripper 4 is rotatably connected to the connecting positions 221. The connection ring 22 extends the rotation axis of the gripper 4 from the outer wall of the sleeve body 21 to the connecting positions 221, allowing the gripper 4 to rotate around the connecting positions 221 as the axis. This results in a larger rotation range for the gripper 4, enabling more flexible opening and closing actions. Simultaneously, in the first state, the gripper 4 can smoothly extend into or out of the hollow tube 112. It should be noted that in this embodiment, the connecting position 221 is an arcuate protrusion along the radial direction of the sleeve body 21 away from the center of the sleeve body 21, which better suits the rotation path of the first finger joint 41. In other embodiments, the connection position 221 may also be a square boss or a connecting cylinder, etc., and there are no restrictions here.

[0066] Optionally, such as Figure 3 and Figure 5 As shown, in this embodiment, when the gripper 4 is in the first state, the first roller 414 abuts against the outer wall of the sliding rod body 31. This arrangement ensures that when the gripper 4 is in the first state, it droops due to gravity and tilts outward relative to the sliding rod body 31 along the radial direction of the sliding rod body 31, facilitating the unfolding of the gripper 4.

[0067] Optionally, such as Figure 4 As shown, in this embodiment, a limiting member 34 is provided on the side wall of the sliding rod body 31, and a sliding groove 212 is provided on the side wall of the sleeve 2. The sliding groove 212 extends along the axial direction of the sleeve body 21, and multiple limiting grooves are provided on the side wall of the sleeve body 21 along the extending direction of the sliding groove 212. Each limiting groove communicates with the sliding groove 212, and the limiting member 34 can slide along the sliding groove 212. The limiting member 34 can be selectively engaged with any one of the limiting grooves. The above configuration can improve the flexibility of the gripping device adjustment.

[0068] Optionally, such as Figure 3and Figure 4 As shown, in this embodiment, two limiting grooves are provided, namely the first limiting groove 211 and the second limiting groove 213. The second limiting groove 213, the sliding groove 212 and the first limiting groove 211 are connected in sequence to form the limiting channel of the limiting member 34. The limiting member 34 can be selectively engaged with the first limiting groove 211 or the second limiting groove 213.

[0069] When the limiting member 34 engages in the second limiting groove 213, the gripper 4 is in a first state, folded. When the limiting member 34 engages in the first limiting groove 211, the gripper 4 is in a second state, unfolded. When the gripper 4 switches from the first state to the second state, the sleeve body 21 is rotated, causing the limiting member 34 to disengage from the second limiting groove 213 and enter the sliding groove 212. This adjusts the relative position of the sleeve body 21 and the sliding rod body 31 in the vertical direction. After position adjustment, the sleeve body 21 is rotated in the opposite direction, causing the limiting member 34 to engage in the first limiting groove 211. The process of switching the gripper 4 from the second state to the first state is the reverse and will not be described further. During the sliding process, the limiting member 34 can move relatively accurately due to the guiding effect of the sliding groove 212. By adjusting the position of the limiting member 34 in the first limiting groove 211 and the second limiting groove 213, the switching between the first and second states of the gripper 4 can be achieved. It should be noted that the limiting member 34 in this embodiment is a limiting post.

[0070] Furthermore, such as Figure 3 and Figure 4 As shown, the sliding rod 3 includes a handle 33, which is fixedly disposed at the other end of the sliding rod body 31. The handle 33 is used to drive the sliding rod body 31 to move within the sleeve 2. When the gripper 4 is in the first state, the gripper 4 is folded, and the lifting handle 33 can insert or remove the sliding rod body 31 and the gripper 4 from the hollow tube 112. When the gripper 4 switches from the first state to the second state, the handle 33 drives the sliding rod body 31 to rotate inside the sleeve body 21, causing the limiting member 34 connected to the sliding rod body 31 to disengage from the second limiting groove 213 and enter the sliding groove 212, thereby adjusting the relative position of the sleeve body 21 and the sliding rod body 31 in the vertical direction. Then, the handle 33 drives the sleeve body 21 to rotate in the opposite direction, causing the limiting member 34 to engage in the first limiting groove 211. When the gripper 4 is in the second state, the gripper 4 is unfolded, the buffer pad 43 abuts against the inclined surface 113, and the lifting handle 33 can grasp the graphitization crucible 1. At this time, the buffer pad 43 is compressed. The handle 33 facilitates the operation of the sliding rod body 31. It should be noted that in this embodiment, the handle 33 is moved axially and rotated circumferentially along the sliding rod body 31 by human power. In other embodiments, the handle 33 may be moved by other external forces, such as a motor or cylinder, etc., which are not limited here.

[0071] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A crucible for graphitization, characterized in that, include: The crucible body (11) has a receiving cavity (111) inside, which is used to store the material to be processed. The crucible body (11) includes a hollow tube (112) protruding from the bottom of the receiving cavity (111). The hollow tube (112) is located inside the receiving cavity (111). The bottom of the crucible body (11) is inclined from the edge to the center to form an inclined surface (113). The inclined surface (113) is connected to the first end of the hollow tube (112). The hollow tube (112) has a channel through which a gripping device can be installed, and the gripping device can contact the inclined surface (113).

2. The crucible for graphitization according to claim 1, characterized in that, The hollow tube (112) extends along the extension direction of the crucible body (11), and the second end of the hollow tube (112) is not higher than the top of the crucible body (11).

3. The crucible for graphitization according to claim 2, characterized in that, The inclined surface (113) is inclined from the first end of the hollow tube (112) toward the second end of the hollow tube (112).

4. The graphitization crucible according to any one of claims 1-3, characterized in that, The hollow tube (112) protrudes from the center of the bottom of the receiving cavity (111).

5. The graphitization crucible according to any one of claims 1-3, characterized in that, The bottom edge of the crucible body (11) is rounded.

6. The graphitization crucible according to any one of claims 1-3, characterized in that, The crucible body (11) is made of carbon-based material.

7. The graphitization crucible according to any one of claims 1-3, characterized in that, The crucible body (11) is cylindrical.

8. The graphitization crucible according to any one of claims 1-3, characterized in that, The graphitization crucible also includes: A crucible lid (12) is provided, which can cover the crucible body (11). The crucible lid (12) has a connecting hole (121) that communicates with the hollow tube (112).

9. The crucible for graphitization according to claim 8, characterized in that, Along the extension direction perpendicular to the crucible body (11), the size of the connecting hole (121) is greater than or equal to the inner wall size of the hollow tube (112), and the size of the connecting hole (121) is smaller than the outer wall size of the hollow tube (112).

10. The crucible for graphitization according to claim 8, characterized in that, The crucible lid (12) is circular.

Images