Conveying device of graphitization furnace and continuous graphitization furnace

Abstract

The utility model discloses a graphitization furnace conveying device and a graphitization furnace. The graphitization furnace conveying device comprises a box body, a blade wheel, a guide plate and a driving device, a feed port is formed in the upper side of the box body, and a discharge port is formed in the lower side of the box body; the guide plate is obliquely arranged in the box body, and a first through hole is defined in the middle of the box body; the blade wheel comprises blades, and the blades are circumferentially arranged around a central shaft of the blade wheel at intervals; the blade wheel is rotatably arranged in the box body, and the upper side of the blade wheel is located in the first through hole; the driving device drives the blade wheel so that the blades can rotate at the first through holes, and then materials on the upper side of the guide plate are driven to fall into the lower side of the guide plate. According to the utility model, materials can be uniformly conveyed into the graphitization furnace body, so that the stable reaction in the furnace body is ensured, and the graphitization quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a graphitization furnace, especially a graphitization furnace conveying device and a continuous graphitization furnace. BACKGROUND

[0002] With the rapid development of lithium battery and other industries, the demand for negative electrode material graphitization has increased greatly. The traditional graphitization furnace has limited efficiency and capacity, and the continuous graphitization furnace emerges as the times require. It can work continuously and greatly improve the production efficiency. Under the background of energy transformation and the expansion of the electric vehicle market, this equipment can effectively meet the demand for large-scale and high-quality negative electrode graphitization processing, and also reduce production costs to a certain extent, which is of great significance to the development of related industries.

[0003] However, in the traditional continuous graphitization furnace feeding system, due to the lack of adjusting structure in the raw material conveying process, the raw material conveying may not be uniform due to various factors such as inconsistent raw material particle size, unstable feeding speed, and feeding port blockage, etc., and the irregular raw material conveying will cause unstable reaction in the graphitization furnace, thereby affecting the quality of material graphitization. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a graphitization furnace conveying device which can uniformly convey materials to the graphitization furnace, ensure stable reaction inside the furnace body, and improve the quality of graphitization.

[0005] Another purpose of the utility model is to provide a continuous graphitization furnace with uniform material conveying, stable reaction inside the furnace body, and high graphitization quality.

[0006] In order to achieve the above purpose, the graphitization furnace conveying device provided by the utility model comprises a box body, a vane wheel, a guide plate, and a driving device. The upper side of the box body is provided with a feeding port, and the lower side is provided with a discharging port. The guide plate is arranged in the box body in an inclined manner and surrounds a first through hole in the middle of the box body. The vane wheel comprises vanes which are arranged circumferentially and spaced apart around the central shaft of the vane wheel. The vane wheel is rotatably arranged in the box body, and the upper side of the vane wheel is located in the first through hole. The driving device drives the vane wheel to rotate the vanes at the first through hole, thereby driving the materials on the upper side of the guide plate to fall into the lower side of the guide plate.

[0007] Compared with the prior art, the utility model discloses a first through hole is formed in the middle of the box body by arranging the guide plate in the box body, so that the material can be automatically gathered on the first through hole in the middle after entering the box body, and the first through hole is provided with the vane wheel, the gap between the adjacent two vanes of the vane wheel can accommodate a certain amount of material, and the material can be uniformly and quantitatively conveyed when the vanes of the vane wheel pass through the first through hole in turn.

[0008] Preferably, the graphite furnace conveying device further comprises a push plate and a reset element, the push plate is pivoted in the box body through a rotating shaft and located at the lower side of the guide plate, and the reset element is arranged between the push plate and the box body to provide elastic force for rotating the push plate towards the vane wheel; the push plate surrounds a second through hole, and the lower side of the vane wheel is located in the second through hole. During the graphite processing, the contact of the material with air and the flow fluctuation of air in the feeding pipe can have adverse effects on the graphite reaction, such as causing oxidation of raw materials, thereby affecting the quality of the product. Therefore, by using the cooperation of the push plate, the inflow of air and the fluctuation of air in the feeding pipe are reduced, so that the environment of the material is more stable, which helps to ensure the stable progress of the graphite reaction, finally improves the stability of the product quality, and makes the produced negative electrode graphite product reach a more optimal level in terms of purity and performance.

[0009] Specifically, the reset element is a torsion spring, the torsion spring is sleeved outside the rotating shaft, one end of the torsion spring is connected with the push plate or the rotating shaft, and the other end of the torsion spring is connected with the box body.

[0010] Specifically, the vane wheel extends a push rod outward, the edge of the guide plate close to the first through hole is provided with a avoiding hole for the push rod to pass through, and the push rod pushes the guide plate to rotate away from the vane wheel when the vane wheel rotates, so as to drive the material between the guide plate and the push plate to fall. By arranging the push rod and using the rotating force of the vane wheel to push away the push plate, the push plate can be automatically opened and closed at regular time, so that the material can be conveyed at regular time and in a quantitative manner, and after being closed, the material above can be filled into the gap between the push plate and the guide plate and covered above the push plate; since the material itself has a certain filling property and covering property, a relatively closed state is formed in the area above the discharge port, which can effectively isolate the contact between the inside of the furnace body and the outside air and reduce the amount of outside air entering the inside of the furnace body.

[0011] Specifically, the blade wheel further comprises two chucks, the chucks are pivoted in the box, and the blades are arranged between the two chucks.

[0012] A continuous graphitization furnace comprises a conveyor, a furnace body and a graphitization furnace conveying device, the graphitization furnace conveying device is arranged between the conveyor and the furnace body, the conveyor conveys materials to a feeding port of the graphitization furnace conveying device, and the graphitization furnace conveying device conveys materials into the furnace body.

[0013] Preferably, a feeding pipe is arranged between the furnace body and the graphitization furnace conveying device, an inlet of the feeding pipe is connected with the outlet of the box, and an outlet of the feeding pipe is connected with the inlet of the furnace body.

[0014] Preferably, the conveyor comprises a conveying pipe, a conveying motor and a screw rod, the screw rod is arranged in the conveying pipe and extends from an inlet to an outlet of the conveying pipe, the conveying motor is arranged outside the conveying pipe and has an output end connected with the screw rod to drive the screw rod to rotate, so that the materials are conveyed to the feeding port of the graphitization furnace conveying device. The use of the conveying motor and the screw rod to convey materials can ensure that the conveying speed is more uniform and the conveying amount is controllable, thereby ensuring the stability of the conveying.

[0015] Preferably, the furnace body is provided with a water inlet pipe at an end away from the graphitization furnace conveying device, is provided with a water outlet pipe at an end close to the graphitization furnace conveying device, and is provided with a cooling water pipe between the water inlet pipe and the water outlet pipe, the cooling water pipe is arranged in the furnace body. The use of the circulating cooling pipeline to cool the furnace body can ensure the stability of the working environment of the furnace body and the normal operation of the equipment.

[0016] Preferably, the graphitization furnace conveying device is arranged above the inlet of the furnace body, and the outlet of the conveyor is arranged above the feeding port of the graphitization furnace conveying device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the continuous graphitization furnace.

[0018] Figure 2 It is a front view of the continuous graphitization furnace.

[0019] Figure 3 It is another perspective view of the continuous graphitization furnace.

[0020] Figure 4 It is a front view of the graphitization furnace conveying device of the continuous graphitization furnace.

[0021] Figure 5 is a top view of the graphitization furnace conveying device of the continuous graphitization furnace.

[0022] Figure 6 is a structure diagram of the blade wheel of the continuous graphitization furnace.

[0023] Figure 7 is a structure diagram of the reset element of the continuous graphitization furnace. DETAILED DESCRIPTION

[0024] In order to make the technical content, structural features and effects of the present application clear, the following will be described in detail in combination with the embodiments and the drawings.

[0025] As shown in Figures 1 to 4 The continuous graphitization furnace 100 of the present application comprises a conveyor 1, a furnace body 2 and a graphitization furnace conveying device 3, the graphitization furnace conveying device 3 is arranged between the conveyor 1 and the furnace body 2. The conveying direction of the conveyor 1 is inclined upward from the bottom; the outlet of the conveyor 1 is arranged above the feeding port 31a of the graphitization furnace conveying device 3. The graphitization furnace conveying device 3 is arranged above the inlet of the furnace body 2, specifically, a feeding pipeline 4 is further arranged between the furnace body 2 and the graphitization furnace conveying device 3, and the graphitization furnace conveying device 3 is arranged above the inlet of the feeding pipeline 4. The inlet of the feeding pipeline 4 is connected with the discharge port 31b of the box 31, and the outlet of the feeding pipeline 4 is connected with the inlet of the furnace body 2. The conveyor 1 conveys materials to the feeding port 31a of the graphitization furnace conveying device 3, and the graphitization furnace conveying device 3 conveys the materials to the furnace body 2 through the feeding pipeline 4.

[0026] Please refer to Figures 4 to 7The graphite furnace conveying device 3 comprises a box 31, a vane wheel 32, a guide plate 33 and a driving device 34. The upper side of the box 31 is provided with a feeding port 31a, and the lower side is provided with a discharging port 31b. The guide plate 33 is obliquely arranged in the box 31 and forms a first through hole 331 with the side wall of the adjacent box 31. The box 31 is in a square structure, and the number of the guide plates 33 is two, which are symmetrically arranged on the opposite sides of the box 31. The vane wheel 32 comprises vanes 321 which are circumferentially and spacedly arranged around the central axis of the vane wheel 32. The space between two adjacent vanes 321 can accommodate materials. The vane wheel 32 is rotatably arranged in the box 31, and the rotation center is perpendicular to the feeding direction. The upper side of the vane wheel 32 is located in the first through hole 331. The driving device 34 drives the vane wheel 32 to rotate the vanes 321 at the first through hole 331, thereby driving the materials on the upper side of the guide plate 33 to fall to the lower side of the guide plate 33. The driving device 34 can be a common motor or a variable frequency motor. The common motor can continuously convey the materials, and the variable frequency motor can adjust the speed of the materials. The driving device 34 can also be a servo motor, which can gap convey the materials.

[0027] Please refer to Figures 4 to 7The graphite furnace conveying device 3 further comprises a push plate 35 and a reset element 36. The push plate 35 is pivotally connected to the box 31 below the guide plate 33 through a pivot shaft 37, and the central axis of the pivot shaft 37 is parallel to the rotation center of the vane wheel 32. The reset element 36 is arranged between the push plate 35 and the box 31 to provide an elastic force for rotating the push plate 35 towards the vane wheel 32. When the reset element 36 is in a natural state, the reset element 36 inclines the push plate 35, and the number of the push plate 35 is two and symmetrically arranged. Specifically, one end of the pivot shaft 37 is provided with a first clamping block 371, and the other end is provided with a second clamping block 372. The first clamping block 371 is coaxially connected to one end of the pivot shaft 37 in a relative rotation manner, and the first clamping block 371 is fixed to the box 31. The second clamping block 372 is fixedly connected to the other end of the pivot shaft 37, and the push plate 35 is fixedly connected to the second clamping block 372. The reset element 36 is a torsion spring, which is sleeved outside the pivot shaft 37, and one end is fixedly connected to the push plate 35 or the second clamping block 372, and the other end is connected to the box 31 or the first clamping block 371. When the push plate 35 rotates under force, the pivot shaft 37 is driven to rotate relative to the first clamping block 371 through the second clamping block 372, so that one end of the torsion spring is driven to rotate, and the torsion spring generates elastic potential energy. When the force acting on the push plate 35 is removed, the torsion spring can automatically recover to reset the push plate 35. A second through hole 351 is formed between the two push plates 35 and the side wall of the adjacent box 31, and the lower side of the vane wheel 32 is located in the second through hole 351. During the graphitization process, the contact of the material with air and the flow fluctuation of air in the feed pipe may have adverse effects on the graphitization reaction, such as causing oxidation of the raw material, thereby affecting the quality of the product. Therefore, by using the cooperation of the push plate 35, the inflow of air and the fluctuation of air in the feed pipe are reduced, the environment of the material is more stable, which helps to ensure the stable progress of the graphitization reaction, finally improves the stability of the product quality, and makes the produced negative electrode graphitized product reach a better level in purity, performance and other aspects.

[0028] Please refer to Figures 4 to 6The impeller 32 extends outwards with a lever 38. The guide plate 33 has a clearance hole 332 near the edge of the first through hole 331 for the lever 38 to pass through. When the lever 38 rotates with the impeller 32, it pushes the guide plate 33 to rotate away from the impeller 32, thereby causing the material located between the guide plate 33 and the lever 35 to fall. Specifically, the impeller 32 also includes chucks 322, which are disposed at both ends and the middle of the impeller 32. The chucks 322 at both ends are pivotally connected to the housing 31, and the blades 321 are respectively disposed between two adjacent chucks 322. The lever 38 extends radially from the middle chuck 322. By setting the lever 38 and using the rotational force of the impeller 32 to push the lever 35 open, the lever 35 can be automatically opened and closed at regular intervals, thus enabling the timely and quantitative delivery of materials. After closing, the material above will fill the gap between the lever 35 and the guide plate 33 and cover the top of the lever 35. Since the material itself has a certain filling and covering properties, a relatively closed state is formed in the area above the discharge port 31b, which can effectively isolate the interior of the furnace body 2 from the outside air and reduce the amount of outside air entering the interior of the furnace body 2.

[0029] For example Figure 3 As shown, the conveyor 1 includes a conveying pipe 11, a conveying motor 12, and a screw 13. The screw 13 is disposed inside the conveying pipe 11 and extends from the inlet to the outlet of the conveying pipe 11. The conveying motor 12 is disposed outside the conveying pipe 11, and its output end is connected to the screw 13 to drive the screw 13 to rotate, thereby conveying the material to the feed inlet 31a of the graphitization furnace conveying device 3. Using the conveying motor 12 and the screw 13 for material conveying ensures a more uniform conveying speed and allows for controllable material conveying quantity, thus ensuring the stability of the material conveying process.

[0030] Please see Figures 1 to 3 The furnace body 2 has a water inlet pipe 21 at the end furthest from the graphitization furnace conveying device 3, and a water outlet pipe 22 at the end closest to the graphitization furnace conveying device 3. A cooling water pipe (not shown in the figure) is installed between the water inlet pipe 21 and the water outlet pipe 22, and the cooling water pipe is arranged inside the furnace body 2. By setting up a circulating cooling pipeline to cool the furnace body 2, the stability of the working environment of the furnace body 2 and the normal operation of the equipment can be ensured.

[0031] Based on the above and in conjunction with the accompanying drawings, the working principle of the continuous graphitization furnace 100 of this utility model will be described in detail below:

[0032] When conveying, the conveying motor 12 drives the screw rod 13 to rotate, the screw rod 13 pushes the material from the inlet of the conveying pipe to the outlet, and the material falls at the feeding port 31a of the box 31. At this time, the driving device 34 drives the vane wheel 32 to rotate, at this time, the material falls into the space between the adjacent two vanes 321 and enters the space between the guide plate 33 and the push plate 35 along with the rotation of the vane 321. When the vane wheel 32 continues to rotate, the push rod 38 abuts against the push plate 35, and then pushes the push plate 35 downward, so that the push plate 35 is opened, and then the material can fall from the discharge port 31b into the feeding pipe 4; when the push rod 38 rotates away from the push plate 35, the push rod 38 is reset under the elastic restoring force of the reset element 36, and then the channel is closed. At the same time, the material above the guide plate 33 falls into the space between the guide plate 33 and the push plate 35 driven by the vane wheel 32 to fill the vacancy of the space. Then, the material enters the furnace body 2 through the feeding pipe 4 to react.

[0033] Compared with the prior art, since the utility model discloses the guide plate 33 is arranged in the box 31, and the guide plate 33 is arranged in the box 31 and forms a first through hole 331 in the middle of the box 31, therefore, the material can be automatically gathered on the first through hole 331 in the middle after entering the box 31. Again, the vane wheel 32 is arranged on the first through hole 331, and the driving device 34 drives the vane wheel 32 to rotate, so that the gap between the adjacent two vanes 321 of the vane wheel 32 can accommodate a certain amount of material, so that the material can be uniformly and quantitatively conveyed when the vane 321 of the vane wheel 32 passes through the first through hole 331 in sequence. In addition, the material can be stirred by the vane 321 at the first through hole 331, so that the material can be prevented from being blocked or unevenly fed for a long time. Therefore, the scheme can uniformly convey the material to the graphitization furnace, effectively ensure the stability of the internal reaction of the furnace body 2, and then improve the quality of graphitization.

[0034] The above only discloses the preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, so equivalent changes made in the patent application range of the utility model still belong to the range covered by the utility model.

Claims

1. A graphitization furnace conveyor apparatus characterized by: The graphite furnace conveying device comprises a box, a vane wheel, a guide plate and a driving device; the upper side of the box is provided with an inlet, and the lower side is provided with an outlet; the guide plate is arranged obliquely in the box and forms a first through hole in the middle of the box; the vane wheel comprises vanes which are arranged circumferentially and spaced apart around the central axis of the vane wheel; the vane wheel is rotatably arranged in the box, and the upper side of the vane wheel is located in the first through hole; The driving device drives the vane wheel to rotate the vanes at the first through hole, thereby driving the material on the upper side of the guide plate to fall to the lower side of the guide plate.

2. The graphitization furnace conveyor of claim 1, wherein: The graphite furnace conveying device further comprises a push plate and a reset element; the push plate is pivotally connected to the box through a rotating shaft and is located on the lower side of the guide plate; the reset element is arranged between the push plate and the box to provide an elastic force for rotating the push plate towards the vane wheel; the push plate forms a second through hole, and the lower side of the vane wheel is located in the second through hole.

3. The graphitization furnace conveyor of claim 2, wherein: The reset element is a torsion spring which is sleeved outside the rotating shaft, one end of the torsion spring is connected with the push plate or the rotating shaft, and the other end is connected with the box.

4. The graphitization furnace conveyor of claim 2, wherein: The vane wheel extends outwardly to form a push rod, the edge of the guide plate near the first through hole is provided with a clearance hole for the push rod to pass through, and the push rod pushes the guide plate to rotate away from the vane wheel when the vane wheel rotates, so as to drive the material between the guide plate and the push plate to fall.

5. The graphitization furnace conveyor of claim 2, wherein: The vane wheel further comprises chucks which are pivotally connected to the box, and the vanes are arranged between the two chucks.

6. A continuous graphitization furnace characterized by: The graphite furnace conveying device is arranged between the conveyor and the furnace body, the conveyor conveys the material to the inlet of the graphite furnace conveying device, and the graphite furnace conveying device conveys the material into the furnace body.

7. The continuous graphitization furnace of claim 6, wherein: The furnace body and the graphite furnace conveying device are provided with a feeding pipe, the inlet of the feeding pipe is connected with the outlet of the box, and the outlet of the feeding pipe is connected with the inlet of the furnace body.

8. The continuous graphitization furnace of claim 6, wherein: The conveyor comprises a conveying pipe, a conveying motor and a screw rod, the screw rod is arranged in the conveying pipe and extends from the inlet to the outlet of the conveying pipe, the conveying motor is arranged outside the conveying pipe, and the output end of the conveying motor is connected with the screw rod to drive the screw rod to rotate, so as to convey the material to the inlet of the graphite furnace conveying device.

9. The continuous graphitization furnace of claim 6, wherein: The furnace body is provided with a water inlet pipe at the end away from the graphite furnace conveying device, the furnace body is provided with a water outlet pipe at the end close to the graphite furnace conveying device, and a cooling water pipe is arranged between the water inlet pipe and the water outlet pipe.

10. The continuous graphitization furnace of claim 6, wherein: The graphite furnace conveying device is arranged above the inlet of the furnace body, and the outlet of the conveyor is arranged above the inlet of the graphite furnace conveying device.

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