Charging device and graphitization furnace

Abstract

The utility model provides a charging device and a graphitization furnace. The loading device comprises a movable frame capable of moving in the X direction and a filling system arranged on the movable frame, the filling system comprises a first stock bin, a second stock bin and a zoning device which are installed on the movable frame, a plurality of discharging pipes which are arranged in the Y direction and can stretch out and draw back in the Z direction are arranged on the zoning device, and the first stock bin and the second stock bin are arranged on the movable frame. A discharging port is formed in the bottom of each discharging pipe, the first stock bins are communicated with the discharging pipes in the middle one by one through first pipelines with the corresponding number, the second stock bins are communicated with all the discharging pipes one by one through second pipelines with the corresponding number, and the X direction and the Y direction are perpendicular to each other on the same overlook projection plane. And the Z direction is vertical to the overlooking projection surface. The problems of high production cost and the like caused by extremely low efficiency, high manual operation intensity, serious dust sealing pollution, serious ton bag damage and the like of a manual filling operation mode are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery negative electrode material production, in particular to a charging device and a graphitization furnace. Background Art

[0002] Environmentally friendly and sustainable energy systems have been gradually developed, mainly including electric vehicles and battery energy storage systems. Batteries for electric vehicles and battery energy storage systems generally include positive electrode materials, negative electrode materials, separators, electrolytes, etc.

[0003] Negative electrode materials are typically processed in a graphitization furnace. The furnace shell is equipped with bottom and side insulation, which requires minimal replacement and facilitates product loading. However, loading the top insulation and resistor material requires interleaving the two materials, which is more challenging. In particular, the resistor material loading area must be protected from any contamination. The resistor material area is primarily used to dissipate volatiles during product heating, and the presence of insulation could pose a significant risk of furnace burnout. Therefore, manual loading is currently the primary method.

[0004] Manual loading requires using a crane to lift the material into a ton bag and transport it to the loading area. The bag is then cut open and the material is manually pushed to the appropriate area for loading. This operation method is inefficient, labor-intensive, and results in high dust pollution, damage to the ton bag, and high production costs. Utility Model Content

[0005] The purpose of the utility model is to provide a charging device and a graphitization furnace that do not require manual charging, so as to overcome the problems of extremely low efficiency of manual charging operation, high labor intensity, large dust pollution, large damage to ton bags, etc., which cause high production costs.

[0006] The technical solution of the utility model is: a loading device, comprising a mobile frame capable of moving in the X direction, and a loading system arranged on the mobile frame and moving with the mobile frame, the loading system comprising a first silo, a second silo and a partitioner mounted on the mobile frame, the partitioner being provided with a plurality of discharge pipes arranged in the Y direction and capable of extending and retracting in the Z direction, a discharge port being formed at the bottom of each of the discharge pipes, the first silo being connected one-to-one with the discharge pipe in the middle through a corresponding number of first pipes, the second silo being connected one-to-one with all the discharge pipes through a corresponding number of second pipes, the X direction and the Y direction being perpendicular to each other on the same top projection plane, and the Z direction being perpendicular to the above-mentioned top projection plane.

[0007] Preferably, the lower ends of the plurality of discharge pipes are connected through a trough body, and the trough body is provided with a plurality of partitions to separate the discharge ports. The trough body forms a first side panel on one side of the X direction, and the trough body forms a second side panel on the other side of the X direction; the first side panel on at least one discharge port located in the middle has a height L1, and the first side panels on the remaining discharge ports have a height L2, L1<L2; the discharge ports have inner top panels, and the inner top panel of at least one discharge port located in the middle is higher than the inner top panels of the remaining discharge ports.

[0008] Preferably, the second side plate is located at the front side of the movable frame in the working direction, and the height of the second side plate is greater than the height of the first side plate.

[0009] Preferably, the discharge pipe includes a fixed pipe connected to the mobile frame and a movable pipe telescopic at the lower end of the fixed pipe. A lifting device connected to the movable pipe is installed on the mobile frame. The lower end of the movable pipe forms the discharge port, and the first pipe and the second pipe are connected to the fixed pipe.

[0010] Preferably, the mobile frame is provided with a first support arm for installing the first silo and the second silo, a second support arm for installing the lifting device, and a third support arm for installing the fixed pipe, the second support arm and the third support arm are parallel to the Y direction, and the first support arm is parallel to the X direction.

[0011] Preferably, a first gate valve is provided between the first silo and the first pipeline, and a second gate valve is provided between the second silo and the second pipeline.

[0012] Preferably, each of the first pipes is provided with a first shut-off fan, and each of the second pipes is provided with a second shut-off fan.

[0013] The utility model also provides a graphitization furnace, comprising a furnace shell and the above-mentioned charging device, wherein a movable frame of the charging device is movably arranged on the furnace shell, and a discharge port of the charging device is arranged corresponding to the furnace shell.

[0014] Preferably, the furnace shell is provided with filling material, and the filling material includes bottom insulation material, product material, side insulation material, bottom resistance material, top insulation material and air vents; the furnace shell is provided with a first layer, a second layer, a third layer and a fourth layer from bottom to top; the bottom insulation material is provided in the first layer, the product material and the side insulation material are provided in the second layer, and the side insulation material is located on both sides of the product material in the Y direction; the bottom resistance material, the top insulation material and the air vents are located in the third layer, and the bottom resistance material is located at the upper end of the product material, the air vents are intermittently arranged along the X direction in the third layer, the top insulation material is filled on the top of the side insulation material and the bottom resistance material and also filled in the intervals between the air vents; the upper ends of the air vents extend above the top insulation material and extend to the fourth layer.

[0015] Compared with the related art, the beneficial effects of the present invention are:

[0016] 1. Design a partitioner that can connect the first and second silos at the same time. By opening and closing the outlets corresponding to the first and second silos on the partitioner, staggered loading of materials can be achieved. This allows for simultaneous loading of insulation material and resistor material, and avoids the risk of insulation material mixing with resistor material.

[0017] Second, the loading of materials is achieved through the movement of the mobile frame, that is, by controlling the moving speed of the mobile frame, the uniformity of the loading is ensured, and the effective loading speed is achieved to reduce dust pollution;

[0018] 3. By adopting the method of discharging partitioned and layered reciprocating filling, the filling of two filling materials, graphite insulation material and resistance material (including air permeable holes and resistance material), is completed. It has the characteristics of compact structure, high filling efficiency, high degree of automation, low operating cost and low dust pollution.

[0019] 4. The two side plates of the trough body in the moving direction of the mobile frame have a height difference. The second side plate facing the working direction of the mobile frame is higher than the first side plate on the other side, and the first side plate is also set with a height difference according to the discharge ports at different positions to prevent the resistance material from mixing into the insulation material during filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of the charging device provided by the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the mobile frame;

[0022] Figure 3 for Figure 1 The structural diagram without the mobile frame;

[0023] Figure 4 for Figure 3 Schematic diagram of the partitioner structure in ;

[0024] Figure 5 A schematic diagram of the structure of the graphitization furnace provided by the utility model;

[0025] Figure 6 for Figure 1 Schematic diagram of the transverse section;

[0026] Figure 7 for Figure 1 Schematic diagram of the longitudinal section;

[0027] Figure 8 Figure 1 is the loading process diagram;

[0028] Figure 9 Figure 2 is the loading process diagram;

[0029] Figure 10 Figure 3 is the loading process diagram;

[0030] Figure 11 for Figure 10 Stereoscopic image of

[0031] Figure 12 This is a schematic diagram of the completed loading (single row of vent holes);

[0032] Figure 13 This is a schematic diagram of the completed loading (double rows of vent holes);

[0033] Figure 14 Schematic diagram of the structure of a partition equipped with double rows of air holes.

[0034] In the figure: 1. Charging device; 2. Filling material; 3. Furnace shell; 4. Filling system; 5. Moving frame; 6. First support arm; 7. Second support arm; 8. Third support arm; 9. Drive; 10. First silo; 11. First gate valve; 12. Lifting device; 13. First fan shut-off; 14. Second fan shut-off; 15. Fixed pipe; 16. Wire rope; 17. Movable pipe; 18. Material level detector; 19. Partitioner; 20. Partition ; 21. Top plate; 22. Second plug valve; 23. Second silo; 24. First discharge port; 25. Second discharge port; 26. Air vent; 27. Top insulation material; 28. Bottom resistance material; 29. ​​Side insulation material; 30. Product material; 31. Bottom insulation material; 32. Track; 33. Discharge pipe; 34. First pipeline; 35. Second pipeline; 36. Discharge port; 37. Trough body; 371. First side plate; 372. Second side plate. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments and features of the embodiments of the present invention may be combined unless they conflict. For ease of description, the words "upper," "lower," "left," and "right" appear below merely to indicate the directions of upper, lower, left, and right in the accompanying drawings and do not limit the structure.

[0036] like Figure 1 As shown, the loading device provided in this embodiment includes a movable frame 5 that can move in the X direction, and a loading system 4 that is arranged on the movable frame 5 and moves with the movable frame 5.

[0037] like Figure 1 、 Figure 3 As shown, the filling system 4 includes a first silo 10, a second silo 23 and a partitioner 19 installed on the mobile frame 5. The first silo 10 is filled with resistance material, and the second silo 23 is filled with insulation material. A material port is provided at the bottom of the first silo 10, and the material port is connected to a plurality of first pipes 34 through a first gate valve 11. A material port is provided at the bottom of the second silo 23, and the material port is connected to a plurality of second pipes 35 through a second gate valve 22. The number of first pipes 34 is less than the number of second pipes 35, and the specific number is determined according to the width of the furnace shell 3 of the graphitization furnace. In this embodiment, the number of the first pipes 34 is three, and the number of the second pipes 35 is five. The first silo 10 and the second silo 23 are both installed on the first support arm 6 of the mobile frame 5. As Figure 2 As shown, the first supporting arm 6 is parallel to the X direction and is located on the top of the moving frame 5 .

[0038] like Figure 3 、 Figure 4 As shown, the partitioner 19 is provided with a plurality of discharge pipes 33 arranged in the Y direction and capable of being extended in the Z direction. The number of the discharge pipes 33 corresponds to the number of the second pipes 35. The discharge pipes 33 are arranged in the Y direction of the loading device. The discharge pipes 33 include a fixed pipe 15 connected to the mobile frame 5 and a movable pipe 17 that is extended at the lower end of the fixed pipe 15. Figure 1 、 Figure 2 As shown, two third support arms 8 are arranged side by side at the lower end of the movable frame 5 , and the fixed tube 15 is sandwiched between the two third support arms 8 and fixed.

[0039] like Figure 3 As shown, the mobile frame 5 is equipped with a lifting device 12 connected to the movable tube 17. Figure 1 、 Figure 2As shown, the lifting device 12 includes a motor, a winch and a steel wire rope 16. The motor is mounted on the second support arm 7 of the mobile frame 5. The second support arm 7 is located between the first support arm 6 and the third support arm 8. The second support arm 7 and the third support arm 8 are parallel to the Y direction, and the first support arm 6 is parallel to the X direction. The winch is mounted on the motor shaft of the motor. One end of the steel wire rope 16 rotates around the winch, and the other end is connected to the groove 37 on the partition 19. The lower end of the movable pipe 17 forms a discharge port 36. The first pipe 34 is connected one-to-one with the fixed pipe 15 of the discharge pipe 33 in the middle, and the middle here can be the middle three. The second pipe 35 is connected one-to-one with all the discharge pipes 33. The X direction and the Y direction are perpendicular to each other on the same top view projection plane, and the Z direction is perpendicular to the above-mentioned top view projection plane.

[0040] like Figure 4 As shown, the lower ends of the five discharge pipes 33 are connected by a trough body 37. A plurality of partitions 20 are provided in the trough body 37 to separate the rectangular discharge port 36. The discharge port 36 includes a first discharge port 24 and a second discharge port 25. The trough body 37 forms a first side plate 371 on one side of the X direction, and the trough body 37 forms a second side plate 372 on the other side of the X direction. The second side plate 372 is located on the front side of the movable frame 5 in the tooling direction. The height of the second side plate 372 is greater than the height of the first side plate 371, and the other two side walls of the rectangular discharge port 36 are at the same height as the second side plate 372. During loading, the material flows out from the gap below the first side plate 371 and combined with the movement of the movable frame 5, loading is achieved.

[0041] like Figure 4 As shown, the first discharge port 24 is located in the middle of the five discharge ports 36, and the rest are second discharge ports 25. The first side plate 371 of the first discharge port 24 has a height L1, and the first side plate 371 of the second discharge port 25 has a height L2, where L1<L2.

[0042] The vent hole 26 is filled through the first discharge port 24, Figure 4 The partition 19 shown is used to fill a single row of vent holes. Figure 13 ), then use Figure 14 In the partitioner 19 shown, the first discharge port 24 is located at the second and fourth positions in the middle, and the middle and other positions are the second discharge ports 25.

[0043] like Figure 3 As shown, a material level detector 18 for monitoring the filling material is provided at one end of the movable pipe 17 close to the tank body 37. A first shut-off fan 13 is provided on each of the first pipes 34, and a second shut-off fan 14 is provided on each of the second pipes 35.

[0044] like Figure 2 As shown, the bottom of the mobile frame 5 is provided with a driver 9 (such as a servo motor) and a roller connected to the driver 9, and the roller is used to travel on the track 32 of the furnace shell 3 (such as Figure 6 shown).

[0045] like Figure 5 As shown, a graphitization furnace includes a furnace shell 3, a filling material 2 arranged in the furnace shell 3 and the above-mentioned charging device 1, the movable frame 5 of the charging device 1 is movably arranged on the furnace shell 3, and the discharge port 36 of the charging device is arranged corresponding to the furnace shell 3.

[0046] like Figure 6 、 Figure 7 As shown, the furnace shell 3 is provided with a filling material 2, which includes a bottom insulation material 31, a product material 30, a side insulation material 29, a bottom resistor material 28, a top insulation material 27, and air vents 26. The furnace shell 3 is provided with, from bottom to top, a first layer A, a second layer B, a third layer C, and a fourth layer D. The bottom insulation material 31 is provided in the first layer A. The product material 30 and the side insulation material 29 are provided in the second layer B, with the side insulation material 29 located on either side of the product material 30 in the Y direction. The bottom resistor material 28, the top insulation material 27, and the air vents 26 are provided in the third layer C, with the bottom resistor material 28 located at the top of the product material 30. The air vents 26 are intermittently provided in the third layer C along the X direction. The top insulation material 27 is filled on top of the side insulation material 29 and the bottom resistor material 28, as well as in the spaces between the air vents 26. The upper ends of the ventilation holes 26 extend above the top heat-insulating material 27 and into the fourth layer D.

[0047] like Figure 7 As shown, the furnace shell 3 has an E end and an F end that are relatively set, the E end is the starting end, and the F end is the end end. The charging device 1 moves from the E end to the F end as the working direction. After the charging device 1 reaches the F end, it is necessary to shut down the running pipeline, return to the E end along the original route, and repeat the loading.

[0048] The method for charging the graphitization furnace provided by the present invention comprises the following steps:

[0049] Step 1: Set the heights of the second layer B, the third layer C, and the fourth layer D in the furnace shell 3 and the filling height of the resistor material 5; and set the displacement speed of the movable frame 5.

[0050] In step 2, the product material 30 is placed in the middle of the second layer B within the furnace shell 3. The first hopper 10 is filled with resistor material, and the second hopper 23 is filled with insulation material. The lifting device 12 is activated to lower the partition 19 to a suitable position (a sensor can be installed on the partition and the distance between the sensor and the upper surface of the material in the furnace shell 3 can be set. The height of the partition 19 can be adjusted by sensing the actual distance value, similarly below). The movable frame 5 is driven to move in the X direction from end E to end F at a set displacement speed.

[0051] The bottom insulation material 31 and the side insulation material 29 are pre-installed, and a gap is left in the middle to place the product material 30 (such as Figure 8 shown)

[0052] Step 3: Fill the second layer of material (such as Figure 8 shown):

[0053] Step 3.1: First, open the first gate valve 11, then turn on the first blower 13 on each of the three first pipes 34. The resistor material in the first silo 10 flows from the discharge port 36 on the first pipe 34 into the furnace shell 3 to form the bottom resistor material 28. The bottom resistor material 28 is located above the product material 30.

[0054] Step 3.2: Drive the movable frame 5 from the E end of the furnace shell 3 to the F end. When reaching the F end, disconnect the first pipe 34, drive the movable frame 5 back from the F end to the E end, and repeat step 4.1 to repeat the loading.

[0055] Step 3.3, repeating steps 3.1 and 3.2. When the filling height of the bottom resistor material 28 reaches a preset value, disconnecting the first pipe 34; during this process, the sensor continuously senses the material height to raise the partition 19;

[0056] Step 3.4: Start the lifting device 12 to drive the partitioner 19 to rise to a suitable position for loading the third layer of material.

[0057] Step 4: Fill the third layer of material (such as Figure 9 、 Figure 11 shown):

[0058] Step 4.1, driving the movable frame 5 to move from the E end to the F end of the furnace shell 3;

[0059] Step 4.2: During step 4.1, all second pipes 35 are connected first, and the insulation material in the second silo 23 flows from all second pipes 35 into the third layer C of the furnace shell 3 to form the top insulation material 27, and the movable frame 5 is driven to travel a distance T.

[0060] Step 4.3: After the mobile frame 5 has traveled a distance T, all second pipes 35 are closed. If loading a single row of vents 26, the first pipe 34 located in the center of the partition 19 is first connected (with the first fan 13 on it turned on). Simultaneously, the second fans 14 on the remaining second pipes 35 are turned on. The resistor material in the first silo 10 flows into the third layer C of the furnace shell 3, forming the vents 26. Simultaneously, the insulation material in the second silo 23 flows into the third layer C of the furnace shell 3, forming the top insulation material 27. The mobile frame 5 is driven a distance T.

[0061] Step 4.4: After the moving frame 5 has traveled a distance T, the first pipe 34 is closed and all the second pipes 35 are opened. The insulation material in the second silo 23 flows from all the second pipes 35 into the third layer C of the furnace shell 3 to form the top insulation material 27.

[0062] Step 4.5: When the mobile frame 5 travels a distance T again, repeat step 4.3 until the mobile frame 5 travels a distance T;

[0063] Repeat steps 4.2-4.5; during steps 4.2-4.5, the height of the material is continuously sensed by the sensor to raise the partition 19;

[0064] In step 4.6, when the top insulation material 27 and the air vents 26 have reached the preset height for the third layer C, disconnect the first and second pipes 34 and 35. Activate the lifting device 12 to raise the partition 19 to the appropriate position for the fourth layer. Drive the movable frame 5 from end F of the furnace shell 3 back to end E.

[0065] If the single stroke from end E to end F cannot reach the preset height, the first pipe 34 and the second pipe 35 are closed, and the moving frame 5 is driven back from end F to end E, and the above steps are repeated to repeat the filling.

[0066] like Figure 4 、 Figure 14 As shown, the discharge port 36 has an inner top plate 21, and the height of the inner top plate 21 of the first discharge port 24 is higher than the height of the inner top plate 21 of the second discharge port 25. Therefore, after the end of step four, an air vent 26 and a top insulation material 27 that are higher than other parts are formed in the middle of the furnace shell 3, and the two are alternately arranged.

[0067] If double rows of vent holes 26 are to be filled, step 4.3 is to first connect the first pipes 34 at the second and fourth positions (i.e., the two sides of the middle) of the partition 19, and connect the second pipes 35 at the remaining positions to inject the insulation material.

[0068] Step 5: Fill the fourth layer of material (such as Figure 10 、 Figure 12 shown):

[0069] Step 5.1, driving the movable frame 5 to move from the E end to the F end of the furnace shell 3;

[0070] Step 5.2: During step 5.1, keep the first pipes 34 corresponding to the vent holes 26 formed in step 4 closed, open the second pipes 35 at the remaining positions, and allow the insulation material in the second silo 23 to flow into the fourth layer D of the furnace shell 3 to form the top insulation material 27. Drive the movable frame 5 to travel a distance T.

[0071] Step 5.3: After the mobile frame 5 has traveled a distance T, if a single row of vent holes 26 is to be filled, first connect the first pipe 34 located in the middle of the partition 19 (turn on the first fan 13 on it). The resistor material in the first silo 10 flows into the fourth layer D of the furnace shell 3 to form the vent holes 26. At the same time, the insulation material in the second silo 23 flows to the sides of the vent holes 26 of the furnace shell 3 to form the top insulation material 27. Figure 4 、 Figure 14 As shown, the discharge port 36 has an inner top plate 21. The height of the inner top plate 21 of the first discharge port 24 is higher than the height of the inner top plate 21 of the second discharge port 25. Therefore, the height of the air vents 26 loaded at one time is higher than the height of the insulation material 27. The movable frame 5 is driven to travel a distance T;

[0072] Step 5.4: After the mobile frame 5 travels a distance T again, steps 5.2-5.4 are repeated. During this process, the height of the material is continuously sensed by the sensor to lift the partition 19;

[0073] If the single stroke from end E to end F cannot reach the preset height, the first pipe 34 and the second pipe 35 are closed, and the mobile frame 5 is driven back from end F to end E, and the above steps are repeated to repeat the filling;

[0074] Step 5.5: When the filling height of the vent holes 26 and the insulation material 27 reaches the preset height value of the fourth layer D, disconnect the first pipe 34 and the second pipe 35;

[0075] Step 5.6: Start the lifting device 12 to drive the partitioner 19 to rise to the initial position, and drive the movable frame 5 from the F end of the furnace shell 3 back to the E end; and complete the loading.

[0076] If the double row of vent holes 26 (such as Figure 13 As shown), the first pipe 34 at the second and fourth positions (i.e., the two sides in the middle) of the partition 19 is connected and disconnected.

[0077] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A charging device, characterized in that: The invention comprises a movable frame (5) capable of moving in the X direction, and a filling system (4) arranged on the movable frame (5) and moving with the movable frame (5), wherein the filling system (4) comprises a first silo (10), a second silo (23) and a partition (19) installed on the movable frame (5), wherein the partition (19) is provided with a plurality of discharge pipes (33) arranged in the Y direction and capable of extending and retracting in the Z direction, wherein a discharge port (36) is formed at the bottom of each discharge pipe (33), wherein the first silo (10) is connected to the discharge pipe (33) in the middle one by one through a corresponding number of first pipes (34), and the second silo (23) is connected to all the discharge pipes (33) one by one through a corresponding number of second pipes (35), wherein the X direction and the Y direction are perpendicular to each other on the same top projection plane, and the Z direction is perpendicular to the above-mentioned top projection plane.

2. The charging device according to claim 1, characterized in that The lower ends of the plurality of discharge pipes (33) are connected through a trough body (37), and the trough body (37) is provided with a plurality of partitions (20) to separate the discharge ports (36). The trough body (37) forms a first side plate (371) on one side in the X direction, and forms a second side plate (372) on the other side in the X direction. The first side plate (371) on at least one discharge port (36) located in the middle has a height L1, and the first side plates (371) on the other discharge ports (36) have a height L2, L1 < L2. The discharge ports (36) have inner top plates (21), and the inner top plate (21) of at least one discharge port (36) located in the middle is higher than the inner top plates (21) of the other discharge ports (36).

3. The charging device according to claim 2, characterized in that The second side plate (372) is located at the front side of the movable frame (5) in the working direction, and the height of the second side plate (372) is greater than the height of the first side plate (371).

4. The charging device according to claim 1, characterized in that The discharge pipe (33) includes a fixed pipe (15) connected to the mobile frame (5), and a movable pipe (17) that is telescopically connected to the lower end of the fixed pipe (15). A lifting device (12) connected to the movable pipe (17) is installed on the mobile frame (5). The lower end of the movable pipe (17) forms the discharge port (36). The first pipe (34) and the second pipe (35) are connected to the fixed pipe (15).

5. The charging device according to claim 4, characterized in that The mobile frame (5) is provided with a first support arm (6) for installing the first silo (10) and the second silo (23), a second support arm (7) for installing the lifting device (12), and a third support arm (8) for installing the fixed pipe (15), the second support arm (7) and the third support arm (8) are parallel to the Y direction, and the first support arm (6) is parallel to the X direction.

6. The charging device according to claim 1, characterized in that A first gate valve (11) is provided between the first silo (10) and the first pipeline (34), and a second gate valve (22) is provided between the second silo (23) and the second pipeline (35).

7. The charging device according to claim 1, characterized in that Each of the first pipes (34) is provided with a first shut-off fan (13), and each of the second pipes (35) is provided with a second shut-off fan (14).

8. A graphitization furnace, comprising a furnace shell (3), characterized in that: It also includes a charging device according to any one of claims 1 to 7, wherein a movable frame (5) of the charging device is movably arranged on the furnace shell (3), and a discharge port (36) of the charging device is arranged corresponding to the furnace shell (3).

9. The graphitization furnace according to claim 8, characterized in that: The furnace shell (3) is provided with a filling material (2), and the filling material (2) includes a bottom insulation material (31), a product material (30), a side insulation material (29), a bottom resistance material (28), a top insulation material (27) and a vent hole (26); the furnace shell (3) is provided with a first layer (A), a second layer (B), a third layer (C) and a fourth layer (D) from bottom to top; the bottom insulation material (31) is provided in the first layer (A), the product material (30) and the side insulation material (29) are provided in the second layer (B), and the side insulation material (29) is located The bottom resistor material (28), the top insulation material (27) and the vent hole (26) are located in the third layer (C), and the bottom resistor material (28) is located at the upper end of the product material (30). The vent hole (26) is intermittently arranged along the X direction in the third layer (C). The top insulation material (27) is filled on the top of the side insulation material (29) and the bottom resistor material (28) and also filled in the interval between the vent hole (26). The upper end of the vent hole (26) extends above the top insulation material (27) and extends to the fourth layer (D).

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