A graphite carbonization furnace for negative electrode materials

Abstract

The present invention provides a graphite carbonization furnace for negative electrode materials, and relates to the field of graphite carbonization furnaces. The graphite carbonization furnace for negative electrode materials includes a material storage device, a gas treatment device, a waste heat collection device, and an electric energy conversion device. The gas treatment device is arranged at the top of the material storage device, the waste heat collection device is arranged at the rear end of the material storage device, and the electric energy conversion device is arranged at the top of the waste heat collection device. The material storage device includes a tank body, and the bottom ends of the tank body are respectively fixedly connected to first support rods on both sides, and the tank body is respectively fixedly connected to telescopic rods on both sides. The side wall of the stirring shaft is provided with a plurality of stirring rods in a circular array, and the inner side wall of the first shell is fixedly connected to a crucible. By providing a material storage device, the material placed in the box is effectively heated evenly, and by providing a waste heat collection device, the heat generated in the production process is effectively recovered, and by providing a gas treatment device, the waste gas generated by the material is effectively purified and discharged.

Description

Technical Field

[0001] The invention relates to the technical field of graphite carbonization furnaces, in particular to a graphite carbonization furnace for negative electrode materials. Background Art

[0002] Graphitization refers to the process of converting non-graphite carbon into graphite carbon with a three-dimensional regular and ordered structure of graphite by high-temperature heat treatment. It originated from the carbon products industry and is a necessary process for producing graphite electrodes. The purpose of graphitization is to improve the thermal and electrical conductivity of carbon materials, improve the thermal shock resistance and chemical stability of carbon materials, make carbon materials lubricious and wear-resistant, and improve the purity of carbon materials. The negative electrode materials of graphite lithium batteries are often graphitized in a graphitization furnace. After the graphite negative electrode materials are processed by air flow crushing, spheroidization, surface coating treatment, carbonization and other preliminary treatments to obtain semi-finished products with standard shapes and particle size distribution, they need to be subjected to high-temperature heat treatment above 2800°C in a special graphitization furnace to achieve ideal electrochemical properties such as capacity, rate, and cycle performance. During the graphitization process, all containers are made of graphite. As the current rises from zero to hundreds of thousands of amperes in a short time, the temperature rises sharply, and the mechanical strength of the material is extremely high.

[0003] Although the prior art heats the carbonaceous material to a high temperature by heating the negative electrode material to convert it into graphite carbon with a three-dimensional regular and ordered structure of graphite, a large amount of heat is wasted in the heating process, resulting in a large energy loss due to long-term use. Therefore, a person skilled in the art provides a graphite carbonization furnace for negative electrode materials to solve the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a graphite carbonization furnace for negative electrode materials, which solves the problem of collecting and recycling the heat generated by heating and treating the waste gas before discharging it.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a negative electrode material graphite carbonization furnace, comprising a storage device, a gas processing device, a waste heat collection device and an electric energy conversion device, wherein the gas processing device is arranged at the top of the storage device, the waste heat collection device is arranged at the rear end of the storage device, and the electric energy conversion device is arranged at the top of the waste heat collection device. The storage device comprises a tank body, and first support rods are fixedly connected to both sides of the bottom end of the tank body, and telescopic rods are fixedly connected to both sides of the tank body. The movable ends of the two telescopic rods are fixedly connected to a cover plate, and a sealing gasket is fixedly connected to the rear end of the cover plate. A motor is fixedly connected to the middle of the front end of the cover plate, and a placement box is fixedly connected to the middle of the rear end of the cover plate. A stirring shaft is rotatably connected to the middle of the inner side wall of the placement box, and a plurality of stirring rods are arranged on the side wall of the stirring shaft in a circular array, and a second support rod is fixedly connected to the bottom end of the cover plate, and pulleys are fixedly connected to both sides of the bottom end of the second support rod, and a first shell is fixedly connected to the middle of the inner side wall of the tank body, and a crucible is fixedly connected to the inner side wall of the first shell.

[0008] Preferably, the gas processing device includes a second shell, a first exhaust pipe is fixedly connected to the rear side of the bottom end of the second shell, a second air inlet pipe is fixedly connected to the front side of the bottom end of the second shell, the first exhaust pipe and the inner side wall of the second air inlet pipe are respectively fixedly connected with a one-way valve, a processing chamber is fixedly connected to the rear side of the inner side wall of the second shell, a working chamber is fixedly connected to the front side of the inner side wall of the second shell, a filter is fixedly connected to one side of the middle part of the inner side wall of the processing chamber, a heating wire is fixedly connected to the middle part of the inner side wall of the processing chamber, a second exhaust pipe is fixedly connected to the middle part of the top end of the second shell, a valve is fixedly connected to the side wall of the bottom end of the second exhaust pipe, a temperature sensor is fixedly connected to the front side of the inner side wall of the processing chamber, a gas storage tank is fixedly connected to the first air inlet pipe at the front end of the second shell, and the bottom end of the first exhaust pipe passes through the tank body and is fixedly connected to the top end of the first shell.

[0009] Preferably, the waste heat collection device includes a third shell, two heat exchange tubes are fixedly connected to the front end of the third shell, one end of the two heat exchange tubes passes through the front end of the third shell and is fixedly connected to a pump, the rear end of the third shell is fixedly connected to a water injection pipe at an upper position, the rear end of the third shell is fixedly connected to a connecting pipe at an upper position, and both ends of the two heat exchange tubes respectively pass through the rear end of the inner wall of the tank body and the front end of the third shell.

[0010] Preferably, the electric energy conversion device includes a support plate, a sleeve is fixedly connected to the rear side of the top end of the support plate, a piston is slidably connected to the inner wall of the sleeve, a second connecting rod is slidably connected to the front end of the sleeve, the support plate is fixedly connected to the support frame near the front side when it reaches Nunu, a fixed block is fixedly connected to the other side of the sleeve, a first connecting rod is slidably connected to the inner wall of the fixed block, an internal gear is fixedly connected to one side of the support frame, a rotating block is rotatably connected to the middle part of one side of the support frame, a transmission gear is rotatably connected to one side of the rotating block, a turntable is rotatably connected to the other side of the support frame, a battery is fixedly connected to the other side of the support plate, and the bottom end of the support plate is fixedly connected to the top of the third shell.

[0011] Preferably, the cover plate and the tank body are adapted to each other, and the output end of the motor passes through the cover plate and the placement box and is fixedly connected to one end of the stirring shaft.

[0012] Preferably, the first exhaust pipe and the second air inlet pipe respectively penetrate the top of the tank body and the top of the first shell body and are connected to the inside of the crucible.

[0013] Preferably, the two heat exchange tubes are respectively arranged on both sides of the first shell, the two heat exchange tubes are respectively fixedly connected to the rear end of the inner wall of the tank body, and the other end of the connecting tube is fixedly connected to the rear end of the sleeve.

[0014] Preferably, the other end of the first connecting rod is rotatably connected to the other side of the rotating block, the other end of the second connecting rod is rotatably connected to one side of the transmission gear, and the battery is electrically connected to the motor and the heating wire respectively.

[0015] Working principle: put the materials needed for carbonization of the negative electrode material of the battery into the placement box 103, push the cover 101, put the placement box 103 into the crucible 104, the telescopic rod 106 shrinks, and the cover 101 slides under the pulley 109, and the tank body 105 is sealed through the sealing gasket 1010, and the gas storage tank 207 is opened. The inert gas in the gas storage tank 207 enters the placement box 103 through the second air inlet pipe 2012. At this time, the crucible 104 is powered, and the crucible 104 generates heat due to resistance. During the heating process inside the placement box 103, the motor 102 is turned on to drive the stirring shaft 1013 to rotate, slowly stir the material, and achieve uniform heating of the material. During the heating process of the crucible 104, the water in the third shell 302 is pumped into the heat exchange tube 301 through the pump 305. 1 exchanges heat with the heat overflowed from the inner side of the first shell 1011, so that steam is gradually generated in the third shell 302, and then the steam is introduced into the sleeve 4012 through the connecting pipe 303, pushing the piston 401 to slide, so that the transmission gear 408 rotates in the internal gear 409, which can drive the turntable 406 to rotate, so that the battery 407 can collect the electric energy generated by the turntable 406 rotating and cutting the magnetic field. During the heating process of the material in the placing box 103, the exhaust gas is discharged into the processing chamber 203 through the first exhaust pipe 202, and after being filtered by the filter 2013, the exhaust gas is heated by the electric heating wire 204 so that the substances in the exhaust gas can be completely burned. Finally, the valve 205 is opened to discharge the purified exhaust gas. After a period of time, the heating of the crucible 104 is stopped, so that the material is slowly cooled down, and the manufacturing of the graphite material is realized.

[0016] (III) Beneficial effects

[0017] The present invention provides a graphite carbonization furnace for negative electrode materials. It has the following beneficial effects:

[0018] 1. By setting up a material storage device, the materials required for carbonization of the negative electrode material of the battery are placed in a placement box, the cover is pushed, the placement box is placed in the crucible, the telescopic rod is retracted, and the cover is sealed to the tank body through the sealing gasket under the sliding of the pulley, and the gas storage tank is opened. The inert gas in the gas storage tank enters the placement box through the second air inlet pipe. At this time, the crucible is powered, and the crucible generates heat due to resistance. During the heating process inside the placement box, the motor is turned on to drive the stirring shaft to rotate, and the material is slowly stirred to achieve uniform heating of the material, effectively making the material in the placement box evenly heated and improving production efficiency.

[0019] 2. By setting up a waste heat collection device, during the heating process of the crucible, the water in the third shell is pumped into the heat exchange tube by a pump, and the heat overflowing from the heat exchange tube and the inner side of the first shell is used for heat exchange, so that steam is gradually generated in the third shell, and then the steam is introduced into the sleeve through the connecting pipe, so as to effectively recover the heat generated in the production process.

[0020] 3. By setting up an electric energy conversion device, the piston is pushed to slide, so that the transmission gear rotates in the internal gear, which can drive the turntable to rotate, so that the battery can collect the electric energy generated by the turntable's rotation cutting the magnetic field, and effectively convert the recovered heat energy into electric energy.

[0021] 4. By setting up a gas treatment device, during the heating process of the material in the placement box, the exhaust gas is discharged into the treatment chamber through the first exhaust pipe. After being filtered through the filter, the exhaust gas is heated by the electric heating wire so that the substances in the exhaust gas can be completely burned. Finally, the valve is opened to discharge the purified exhaust gas. After a period of time, the heating of the crucible is stopped to allow the material to cool down slowly, thereby realizing the manufacture of graphite materials and effectively purifying the exhaust gas generated by the material before discharging it to avoid pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the material storage device of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the electric energy conversion device of the present invention;

[0025] Figure 4 It is a side view structural schematic diagram of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the waste heat collection device of the present invention;

[0027] Figure 6 It is a schematic diagram of the top view structure of the present invention.

[0028] Among them, 1. material storage device; 101. cover plate; 102. motor; 103. placement box; 104. crucible; 105. tank; 106. telescopic rod; 107. first support rod; 108. second support rod; 109. pulley; 1010. sealing pad; 1011. first shell; 1012. stirring rod; 1013. stirring shaft; 2. gas treatment device; 201. second shell; 202. first exhaust pipe; 203. treatment chamber; 204. heating wire; 205. valve; 206. second exhaust pipe; 207. gas storage tank; 208. working chamber; 209. An air intake pipe; 2010, a temperature sensor; 2011, a one-way valve; 2012, a second air intake pipe; 2013, a filter; 3, a waste heat collection device; 301, a heat exchange tube; 302, a third shell; 303, a connecting pipe; 304, a water injection pipe; 305, a pump; 4, an electric energy conversion device; 401, a piston; 402, a fixed block; 403, a first connecting rod; 404, a rotating block; 405, a support frame; 406, a turntable; 407, a battery; 408, a transmission gear; 409, an internal gear; 4010, a second connecting rod; 4011, a support plate; 4012, a sleeve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] like Figure 1-6As shown, an embodiment of the present invention provides a graphite carbonization furnace for negative electrode materials, comprising a storage device 1, a gas processing device 2, a waste heat collection device 3 and an electric energy conversion device 4, wherein the gas processing device 2 is arranged at the top of the storage device 1, the waste heat collection device 3 is arranged at the rear end of the storage device 1, and the electric energy conversion device 4 is arranged at the top of the waste heat collection device 3, the storage device 1 comprises a tank body 105, and the bottom ends of the tank body 105 are respectively fixedly connected to the first support rod 107 on both sides, and the tank body 105 is respectively fixedly connected to the first support rod 107 on both sides. The telescopic rod 106 has two movable ends fixedly connected to the cover plate 101, the rear end of the cover plate 101 is fixedly connected to the sealing gasket 1010, the middle of the front end of the cover plate 101 is fixedly connected to the motor 102, the middle of the rear end of the cover plate 101 is fixedly connected to the placement box 103, the middle of the inner wall of the placement box 103 is rotatably connected to the stirring shaft 1013, the side wall of the stirring shaft 1013 is arranged in a circular array with a plurality of stirring rods 1012, the bottom end of the cover plate 101 is fixedly connected to the second support rod 108, and the second support rod 108 is fixedly connected to the motor 102. 08 bottom two sides are fixedly connected with pulleys 109, the middle of the inner wall of the tank body 105 is fixedly connected with a first shell 1011, the inner wall of the first shell 1011 is fixedly connected with a crucible 104, by setting the storage device 1, the materials required for carbonization of the negative electrode material of the battery are placed in the placement box 103, the cover plate 101 is pushed, the placement box 103 is placed in the crucible 104, the telescopic rod 106 is retracted, and the cover plate 101 slides under the pulley 109, and the tank body 105 is sealed through the sealing gasket 1010. Seal and open the gas tank 207. The inert gas in the gas tank 207 enters the placement box 103 through the second air inlet pipe 2012. At this time, the crucible 104 is powered and generates heat due to resistance. During the heating process inside the placement box 103, the motor 102 is turned on to drive the stirring shaft 1013 to rotate, slowly stirring the material to achieve uniform heating of the material, effectively making the material in the placement box 103 evenly heated and improving production efficiency.

[0032] The gas treatment device 2 includes a second shell 201, a first exhaust pipe 202 is fixedly connected to the rear side of the bottom end of the second shell 201, a second air inlet pipe 2012 is fixedly connected to the front side of the bottom end of the second shell 201, and the inner walls of the first exhaust pipe 202 and the second air inlet pipe 2012 are respectively fixedly connected with a one-way valve 2011, a processing chamber 203 is fixedly connected to the inner wall of the second shell 201 at the rear side, a working chamber 208 is fixedly connected to the inner wall of the second shell 201 at the front side, a filter screen 2013 is fixedly connected to one side of the middle part of the inner wall of the processing chamber 203, a heating wire 204 is fixedly connected to the middle part of the inner wall of the processing chamber 203, a second exhaust pipe 206 is fixedly connected to the middle part of the top end of the second shell 201, a valve 205 is fixedly connected to the side wall of the bottom end of the second exhaust pipe 206, and a valve 206 is fixedly connected to the inner wall of the processing chamber 203 at the front side. A temperature sensor 2010 is provided, and a gas storage tank 207 is fixedly connected to the inner wall of the working chamber 208. A first air inlet pipe 209 is fixedly connected to the front end of the second shell 201. The bottom end of the first exhaust pipe 202 passes through the tank body 105 and is fixedly connected to the top end of the first shell 1011. By setting up a gas treatment device 2, during the heating process of the material in the placement box 103, the exhaust gas is discharged into the treatment chamber 203 through the first exhaust pipe 202. After being filtered through the filter screen 2013, the exhaust gas is heated by the electric heating wire 204 so that the substances in the exhaust gas can be completely burned. Finally, the valve 205 is opened to discharge the purified exhaust gas. After a period of time, the heating of the crucible 104 is stopped, so that the material is slowly cooled down, thereby realizing the manufacture of graphite material, and effectively purifying the exhaust gas generated by the material and discharging it to avoid pollution to the environment.

[0033] The waste heat collection device 3 includes a third shell 302, and two heat exchange tubes 301 are fixedly connected to the front end of the third shell 302. One end of the two heat exchange tubes 301 passes through the front end of the third shell 302 and is fixedly connected to a pump 305. A water injection pipe 304 is fixedly connected to the upper position of the rear end of the third shell 302, and a connecting pipe 303 is fixedly connected to the upper position of the rear end of the third shell 302. Both ends of the two heat exchange tubes 301 pass through the rear end of the inner wall of the tank body 105 and the front end of the third shell 302 respectively. By setting the waste heat collection device 3, during the heating process of the crucible 104, water in the third shell 302 is pumped into the heat exchange tube 301 through the pump 305, and heat exchange is performed using the heat overflowed from the heat exchange tube 301 and the inner side of the first shell 1011, so that steam is gradually generated in the third shell 302, and then the steam is introduced into the sleeve 4012 through the connecting pipe 303, so that the heat generated in the production process is effectively recovered.

[0034] The electric energy conversion device 4 includes a support plate 4011, a sleeve 4012 is fixedly connected to the rear side of the top of the support plate 4011, a piston 401 is slidably connected to the inner wall of the sleeve 4012, a second connecting rod 4010 is slidably connected to the front end of the sleeve 4012, a support frame 405 is fixedly connected to the front side of the support plate 4011 when it reaches Nunu, a fixed block 402 is fixedly connected to the other side of the sleeve 4012, a first connecting rod 403 is slidably connected to the inner wall of the fixed block 402, an internal gear 409 is fixedly connected to one side of the support frame 405, and a rotating block 409 is rotatably connected to the middle part of one side of the support frame 405 4. A transmission gear 408 is rotatably connected to one side of the rotating block 404, a turntable 406 is rotatably connected to the other side of the support frame 405, a battery 407 is fixedly connected to the other side of the support plate 4011, and the bottom end of the support plate 4011 is fixedly connected to the top end of the third shell 302. By setting the electric energy conversion device 4, the piston 401 is pushed to slide, so that the transmission gear 408 rotates in the internal gear 409, which can drive the turntable 406 to rotate, so that the battery 407 can collect the electric energy generated by the turntable 406 rotating and cutting the magnetic field, and effectively convert the recovered heat energy into electric energy.

[0035] The cover plate 101 and the tank body 105 are adapted to each other, the output end of the motor 102 passes through the cover plate 101 and the placement box 103 and is fixedly connected to one end of the stirring shaft 1013, the first exhaust pipe 202 and the second air inlet pipe 2012 respectively pass through the top of the tank body 105 and the top of the first shell 1011 and are connected to the inside of the crucible 104, the two heat exchange tubes 301 are respectively arranged on both sides of the first shell 1011, the two heat exchange tubes 301 are respectively fixedly connected to the rear end of the inner wall of the tank body 105, the other end of the connecting pipe 303 is fixedly connected to the rear end of the sleeve 4012, the other end of the first connecting rod 403 is rotatably connected to the other side of the rotating block 404, the other end of the second connecting rod 4010 is rotatably connected to one side of the transmission gear 408, and the battery 407 is electrically connected to the motor 102 and the heating wire 204 respectively.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A graphite carbonization furnace for negative electrode materials, comprising a material storage device (1), a gas processing device (2), a waste heat collection device (3) and an electric energy conversion device (4), wherein the gas processing device (2) is arranged at the top of the material storage device (1), the waste heat collection device (3) is arranged at the rear end of the material storage device (1), and the electric energy conversion device (4) is arranged at the top of the waste heat collection device (3), characterized in that: The material storage device (1) comprises a tank body (105), the bottom ends of the tank body (105) are respectively fixedly connected to first support rods (107), the two sides of the tank body (105) are respectively fixedly connected to telescopic rods (106), the movable ends of the two telescopic rods (106) are fixedly connected to a cover plate (101), the rear end of the cover plate (101) is fixedly connected to a sealing gasket (1010), the middle part of the front end of the cover plate (101) is fixedly connected to a motor (102), and the middle part of the rear end of the cover plate (101) is fixedly connected to a placement box (101). 03), a stirring shaft (1013) is rotatably connected to the middle of the inner wall of the placement box (103), and the side wall of the stirring shaft (1013) is provided with a plurality of stirring rods (1012) in a circular array, a second support rod (108) is fixedly connected to the bottom end of the cover plate (101), and pulleys (109) are fixedly connected to both sides of the bottom end of the second support rod (108), a first shell (1011) is fixedly connected to the middle of the inner wall of the tank body (105), and a crucible (104) is fixedly connected to the inner wall of the first shell (1011).

2. A graphite carbonization furnace for negative electrode materials according to claim 1, characterized in that: The gas processing device (2) comprises a second shell (201), the bottom end of the second shell (201) is fixedly connected to a first exhaust pipe (202) at the rear side, the bottom end of the second shell (201) is fixedly connected to a second intake pipe (2012) at the front side, the first exhaust pipe (202) and the inner side walls of the second intake pipe (2012) are respectively fixedly connected to a one-way valve (2011), the inner side wall of the second shell (201) is fixedly connected to a processing chamber (203) at the rear side, the inner side wall of the second shell (201) is fixedly connected to a working chamber (208) at the front side, and a filter screen (2011) is fixedly connected to one side of the middle part of the inner side wall of the processing chamber (203). 3), a heating wire (204) is fixedly connected to the middle of the inner wall of the processing chamber (203), a second exhaust pipe (206) is fixedly connected to the middle of the top of the second shell (201), a valve (205) is fixedly connected to the side wall of the bottom end of the second exhaust pipe (206), a temperature sensor (2010) is fixedly connected to the front side of the inner wall of the processing chamber (203), a gas storage tank (207) is fixedly connected to the inner wall of the working chamber (208), a first air inlet pipe (209) is fixedly connected to the front end of the second shell (201), and the bottom end of the first exhaust pipe (202) passes through the tank body (105) and is fixedly connected to the top of the first shell (1011).

3. The graphite carbonization furnace for negative electrode material according to claim 1, characterized in that: The waste heat collection device (3) comprises a third shell (302), the front end of the third shell (302) being fixedly connected to two heat exchange tubes (301), one end of the two heat exchange tubes (301) passing through the front end of the third shell (302) and being fixedly connected to a pump (305), the rear end of the third shell (302) being fixedly connected to a water injection pipe (304) at an upper position, the rear end of the third shell (302) being fixedly connected to a connecting pipe (303) at an upper position, and the two ends of the two heat exchange tubes (301) respectively passing through the rear end of the inner wall of the tank body (105) and the front end of the third shell (302).

4. The graphite carbonization furnace for negative electrode material according to claim 1, characterized in that: The electric energy conversion device (4) comprises a support plate (4011), a sleeve (4012) is fixedly connected to the rear side of the top end of the support plate (4011), a piston (401) is slidably connected to the inner wall of the sleeve (4012), a second connecting rod (4010) is slidably connected to the front end of the sleeve (4012), a support frame (405) is fixedly connected to the front side of the support plate (4011) when it reaches Nunu, a fixed block (402) is fixedly connected to the other side of the sleeve (4012), and the inner wall of the fixed block (402) A first connecting rod (403) is slidably connected, an internal gear (409) is fixedly connected to one side of the support frame (405), a rotating block (404) is rotatably connected to the middle part of one side of the support frame (405), a transmission gear (408) is rotatably connected to one side of the rotating block (404), a turntable (406) is rotatably connected to the other side of the support frame (405), a battery (407) is fixedly connected to the other side of the support plate (4011), and the bottom end of the support plate (4011) is fixedly connected to the top end of the third shell (302).

5. The graphite carbonization furnace for negative electrode material according to claim 1, characterized in that: The cover plate (101) and the tank body (105) are adapted to each other, and the output end of the motor (102) passes through the cover plate (101) and the placement box (103) and is fixedly connected to one end of the stirring shaft (1013).

6. The graphite carbonization furnace for negative electrode material according to claim 2, characterized in that: The first exhaust pipe (202) and the second air inlet pipe (2012) respectively penetrate the top of the tank body (105) and the top of the first shell (1011) and are connected to the interior of the crucible (104).

7. The graphite carbonization furnace for negative electrode materials according to claim 3, characterized in that: The two heat exchange tubes (301) are respectively arranged on both sides of the first shell (1011), and the two heat exchange tubes (301) are respectively fixedly connected to the rear end of the inner wall of the tank body (105), and the other end of the connecting tube (303) is fixedly connected to the rear end of the sleeve (4012).

8. The graphite carbonization furnace for negative electrode materials according to claim 4, characterized in that: The other end of the first connecting rod (403) is rotatably connected to the other side of the rotating block (404), the other end of the second connecting rod (4010) is rotatably connected to one side of the transmission gear (408), and the battery (407) is electrically connected to the motor (102) and the heating wire (204) respectively.

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