Lithium battery material cooling reaction furnace

Abstract

The application discloses a lithium battery material cooling reaction furnace, which comprises a reaction furnace, a cooling furnace, a switching furnace, a spraying device and a driving mechanism. The reaction furnace comprises a feeding cylinder, a cooling cylinder and a discharging cylinder. An inner cavity is arranged in the cooling furnace, and the cooling cylinder is arranged in the inner cavity. The feeding cylinder is rotatably connected with the switching furnace at one end of the feeding cylinder which extends out of the inner cavity. The discharging cylinder is arranged at the other end of the discharging cylinder which extends out of the inner cavity. The diameter of the cooling cylinder is larger than the diameters of the feeding cylinder and the discharging cylinder. The spraying device comprises a spraying head and a water supply system. The spraying head is arranged at the top of the inner cavity, and the water supply system is connected with the spraying head so that the spraying head sprays water to the surface of the cooling cylinder. A drainage port is arranged at the inner bottom of the inner cavity so as to drain the sprayed water. The driving mechanism is arranged outside the cooling furnace and drives the rotation of the reaction furnace, so that the materials in the reaction furnace are uniformly cooled. The application has the advantages of simple structure, uniform cooling and long service life.

Description

TECHNICAL FIELD

[0001] The present application relates to a cooling device, in particular to a lithium battery material cooling reaction furnace. BACKGROUND

[0002] In the process of lithium battery material processing, it is generally necessary to send the lithium battery material into the rotary reaction furnace for reaction. In the process of reaction, the lithium battery material needs to be heated and pressurized to speed up the reaction and improve the production efficiency. After the reaction is completed, in order to quickly discharge the lithium battery material and transport it to another process flow, the reacted lithium battery is usually sent into a cooling furnace for rapid cooling. However, the existing cooling furnace mainly cools through the axial arrangement of multiple cooling water pipes in the rotary reaction furnace. By feeding cooling water into the water pipes, the material stirred in the rotary reaction furnace can be in constant contact with the cooling water pipes, so as to achieve heat exchange. However, since the cooling water pipes rotate with the rotary reaction furnace, a sealed rotary joint is needed to connect the water pipes at the water inlet and outlet of the cooling water pipes. This way makes the cooling structure in the rotary reaction furnace very complex, and the joint of the water pipes is prone to water leakage, which has poor running stability. In addition, the cooling water pipes cannot cool the side wall of the reaction furnace everywhere, so it is easy to cause uneven cooling of the side wall of the rotary reaction furnace, which affects the cooling effect and the service life of the rotary reaction furnace. SUMMARY

[0003] The present application aims to provide a lithium battery material cooling reaction furnace with simple structure, uniform cooling and long service life.

[0004] In order to achieve the above-mentioned purpose, the lithium battery material cooling reaction furnace provided by the present application comprises a reaction furnace, a cooling furnace, a transfer furnace, a spraying device and a driving mechanism. The reaction furnace comprises a feeding cylinder, a cooling cylinder and a discharging cylinder. The cooling furnace is provided with an inner cavity, and the cooling cylinder is located in the inner cavity. One end of the feeding cylinder extends out of the inner cavity and is rotatably connected with the transfer furnace. The other end of the discharging cylinder extends out of the inner cavity, and the diameter of the cooling cylinder is greater than that of the feeding cylinder and the discharging cylinder. The spraying device comprises a spray head and a water supply system. The spray head is arranged in the top and inner side wall of the inner cavity in the axial direction and the circumferential direction of the cooling furnace. The water supply system is connected with the spray head to spray water to the surface of the cooling cylinder. The inner bottom of the inner cavity is provided with a drain port to drain the sprayed water. The driving mechanism is arranged outside the cooling furnace and drives the rotation of the reaction furnace to uniformly cool the material in the reaction furnace.

[0005] Compared with the prior art, the diameter of the cooling cylinder is greater than the diameter of the feeding cylinder and the discharging cylinder, the cooling cylinder is arranged in the inner cavity of the cooling furnace, and the feeding cylinder and the discharging cylinder are arranged as support ends and transition ends, so that the spraying device can be arranged in the cooling furnace. Cooling water is continuously sprayed to the upper top side wall of the cooling cylinder by the spray head, the lower bottom side wall of the cooling cylinder can be immersed in the cooling water stored in the bottom of the inner cavity, and the cooling cylinder is continuously rotated, so that the material in the cooling cylinder can be continuously stirred and in contact with the side wall of the cooling cylinder for heat exchange, thereby achieving the purpose of rapid cooling. In addition, the outer side wall of the cooling cylinder is uniformly sprayed during cooling, the cooling is very uniform, and the service life of the reaction furnace is not affected during long-term use. In addition, the spraying device is arranged on the cooling furnace, and the cooling furnace is in a static state, so that the water pipes of the spraying device are in static butt joint, the water pipe connection structure is simple, water leakage is not easy, the maintenance frequency is reduced, and the production efficiency is effectively improved.

[0006] Preferably, the first sealing device is arranged between the feeding cylinder and the adapter furnace. The first sealing device can prevent the leakage of materials, energy and gas from the gap between the feeding cylinder and the adapter furnace, and ensure the safety and reliability of operation.

[0007] Preferably, the second sealing device is arranged between the feeding cylinder and the cooling furnace and between the discharging cylinder and the cooling furnace. The second sealing device can prevent the leakage of moisture and hot gas from the gap between the feeding cylinder and the cooling furnace, and improve the stability of operation.

[0008] Preferably, the circulating device is further arranged, the circulating device comprises a water pump, a control valve and a water pipe, the drain port is arranged at one end of the inner cavity close to the discharging cylinder, the input end of the water pump is connected with the drain port, the output end of the water pump is connected with the control valve, the control valve is connected with the water pipe, and the water pipe is connected with the water supply system. The arrangement of the circulating device can make the cooled water flow back to the water supply system for repeated use, thereby greatly saving water and reducing production cost.

[0009] Specifically, the outer side wall of the cooling cylinder is provided with paddles in the circumferential direction, the paddles are arranged in groups along the axial direction of the cooling cylinder; the paddles drive the water at the bottom of the inner cavity to flow from the end close to the feeding cylinder to the end close to the discharging cylinder. Since the inner bottom of the inner cavity can store a certain amount of water, thereby forming a pool that can soak the lower side of the cooling cylinder, by providing the paddles on the outer side wall of the cooling cylinder and using the power of the rotation of the cooling cylinder, the paddles can push the water in the pool to flow from the end close to the feeding cylinder to the end close to the discharging cylinder, so that the water can be fully in contact with the cooling cylinder to improve the cooling effect. Moreover, it is beneficial to push the water to the vicinity of the drain port and facilitate drainage. In addition, the paddles can also push the airflow at the top of the inner cavity to flow to the other end under the action of rotation, thereby facilitating the rapid discharge of hot air in the inner cavity and improving the heat dissipation effect.

[0010] Specifically, the top of the cooling furnace is provided with an air inlet close to the end of the feeding cylinder and communicating with the outside and the inner cavity, and the top of the cooling furnace is provided with an air outlet close to the end of the discharging cylinder and communicating with the outside and the inner cavity. In this way, the hot air in the inner cavity can be discharged faster, thereby improving the cooling effect of the reaction furnace.

[0011] Specifically, the air outlet is provided with an exhaust fan. The exhaust fan can accelerate the outflow of the airflow in the inner cavity, thereby accelerating the cooling speed.

[0012] Preferably, the feeding cylinder, the cooling cylinder and the discharging cylinder are provided with pushing blades inside, the pushing blades in the feeding cylinder and the cooling cylinder drive the material to move towards the discharging cylinder; and the setting direction of the pushing blades in the discharging cylinder is opposite to that of the pushing blades in the cooling cylinder. By using the pushing blades, the material can be uniformly stirred in the reaction furnace and fully contacted with the side wall of the reaction furnace; and by setting the direction of the pushing blades in the discharging cylinder opposite to that of the pushing blades in the cooling cylinder, the material can be slowed down in the discharging speed in the discharging cylinder.

[0013] Preferably, the diameters between the feeding cylinder and the cooling cylinder and between the discharging cylinder and the cooling cylinder gradually increase. In this way, the material can be more smoothly guided between the cooling cylinder and the feeding cylinder or the discharging cylinder, and the outer diameter of the cooling cylinder is greater than the outer diameters of the feeding cylinder and the discharging cylinder, so that when the cooling cylinder is accommodated in the inner cavity, the lower side of the outer side wall of the cooling cylinder is below the height of the through hole of the cooling furnace bearing the feeding cylinder and the discharging cylinder, thereby ensuring that the lower side of the cooling cylinder can be soaked in the water surface of the water pool at the bottom of the inner cavity, so as to accelerate the cooling speed.

[0014] Preferably, the cooling furnace comprises an upper furnace body and a lower furnace body, semi-circular upper openings are formed at two ends of the upper furnace body, semi-circular lower openings are formed at two ends of the lower furnace body, so that the two upper openings and the lower openings respectively form through holes for the feeding cylinder and the discharging cylinder to extend out when the upper furnace body covers the lower furnace body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural diagram of a lithium battery material cooling reaction furnace of the present application.

[0016] Figure 2 is a structural diagram of a reaction furnace of a lithium battery material cooling reaction furnace of the present application.

[0017] Figure 3 is a structural diagram of a cooling furnace of a lithium battery material cooling reaction furnace of the present application. DETAILED DESCRIPTION

[0018] 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.

[0019] As shown in Figures 1 to 3 , the lithium battery material cooling reaction furnace 100 of the present application comprises a reaction furnace 1, a cooling furnace 2, an adapter furnace 3, a spraying device 4, a driving mechanism 5 and a support frame 6, the reaction furnace 1 comprises a feeding cylinder 11, a cooling cylinder 12 and a discharging cylinder 13, the cooling furnace 2 is internally provided with an inner cavity 21, the cooling cylinder 12 is located in the inner cavity 21, the feeding cylinder 11 extends out of one end of the inner cavity 21 and is rotationally connected with the adapter furnace 3; the discharging cylinder 13 extends out of the other end of the inner cavity 21, the diameter of the cooling cylinder 12 is greater than the diameters of the feeding cylinder 11 and the discharging cylinder 13; the spraying device 4 comprises a spray head 41 and a water supply system 42, the spray head 41 is arranged in an array along the axial direction and the circumferential direction of the cooling furnace 2 at the top and the inner side wall of the inner cavity 21, the water supply system 42 is connected with the spray head 41 to make the spray head 41 spray water to the surface of the cooling cylinder 12; the inner bottom of the inner cavity 21 is provided with a drain 22 to drain the sprayed water; the driving mechanism 5 is arranged outside the cooling furnace 2 and drives the reaction furnace 1 to rotate to make the materials in the reaction furnace 1 uniformly cooled. One end of the feeding cylinder 11 and one end of the discharging cylinder 13 are rotationally supported on the support frame 6 through bearings. The adapter furnace 3 and the cooling furnace 2 are fixed on the support frame 6.

[0020] Again as Figure 1As shown, the first sealing device 7 is arranged between the feeding cylinder 11 and the adapter furnace 3. The first sealing device 7 can prevent the leakage of materials, energy and gas from the gap between the feeding cylinder 11 and the adapter furnace 3, ensuring the safety and reliability of the operation.

[0021] For example Figure 1 As shown, the second sealing device 8 is arranged between the feeding cylinder 11 and the cooling furnace 2 and between the discharging cylinder 13 and the cooling furnace 2. The second sealing device 8 can prevent the leakage of moisture and hot gas from the gap between the feeding cylinder 11 and the cooling furnace 2, improving the stability of the operation.

[0022] For example Figure 1 The lithium battery material cooling reaction furnace 100 further comprises a circulating device 9, which comprises a water pump 91, a control valve 92 and a water pipe 93. The water outlet 22 is arranged at one end of the inner cavity 21 close to the discharging cylinder 13. The input end of the water pump 91 is connected with the water outlet 22. The output end of the water pump 91 is connected with the control valve 92. The control valve 92 is connected with the water pipe 93. The water pipe 93 is connected with the water supply system 42. The arrangement of the circulating device 9 can make the cooled water flow back to the water supply system 42 for reuse, thereby greatly saving water and reducing production cost.

[0023] For example Figure 1 For example Figure 2 The outer side wall of the cooling cylinder 12 is circumferentially provided with paddles 121, which are arranged in multiple groups along the axial direction of the cooling cylinder 12. The paddles 121 drive the water at the bottom of the inner cavity 21 to flow from one end close to the feeding cylinder 11 to the other end close to the discharging cylinder 13. Since the inner bottom of the inner cavity 21 can store a certain amount of water, thereby forming a water pool 211 that can soak the lower side of the cooling cylinder 12, by arranging the paddles 121 on the outer side wall of the cooling cylinder 12 and utilizing the power of the rotation of the cooling cylinder 12, the paddles 121 can push the water in the water pool 211 to flow from one end close to the feeding cylinder 11 to the other end close to the discharging cylinder 13, thereby sufficiently contacting and cooling the cooling cylinder 12, effectively improving the cooling effect. Moreover, the paddles 121 can also push the airflow at the top of the inner cavity 21 to flow to the other end under the action of rotation, thereby facilitating the rapid discharge of the hot gas in the inner cavity 21, improving the heat dissipation effect.

[0024] For example Figure 1, the top of the cooling furnace 2 near one end of the feeding cylinder 11 is provided with an air inlet 23 communicating the outside with the inner cavity 21, and the top of the cooling furnace 2 near one end of the discharging cylinder 13 is provided with an air outlet 24 communicating the outside with the inner cavity 21. In this way, the hot gas in the inner cavity 21 can be discharged faster, thereby improving the cooling effect of the reaction furnace 1. Specifically, the air outlet 24 is provided with an exhaust fan 10. The exhaust fan 10 can accelerate the outflow of the air in the inner cavity 21, thereby accelerating the cooling speed.

[0025] Please refer to Figure 1 and Figure 2 , the feeding cylinder 11, the cooling cylinder 12 and the discharging cylinder 13 are provided with pushing blades 1a, the pushing blades 1a in the feeding cylinder 11 and the cooling cylinder 12 drive the material to move towards the discharging cylinder 13; the setting direction of the pushing blades 1a in the discharging cylinder 13 is opposite to that of the pushing blades 1a in the cooling cylinder 12, so that the pushing blades 1a in the discharging cylinder 13 drive the material to move towards the inside of the cooling cylinder 12. With the pushing blades 1a, the material can be uniformly stirred in the reaction furnace 1, and the material can fully contact the side wall of the reaction furnace 1; by setting the pushing blades 1a in the discharging cylinder 13 opposite to the pushing blades 1a in the cooling cylinder 12, the material in the discharging cylinder 13 can be slowed down, the time for the material to flow out of the cooling cylinder 12 is delayed, and the cooling effect is improved. The diameters between the feeding cylinder 11 and the cooling cylinder 12 and between the discharging cylinder 13 and the cooling cylinder 12 gradually increase. In this way, the material can be more smoothly guided between the cooling cylinder 12 and the feeding cylinder 11 or the discharging cylinder 13, and the outer diameter of the cooling cylinder 12 is greater than the outer diameters of the feeding cylinder 11 and the discharging cylinder 13, so that when the cooling cylinder 12 is accommodated in the inner cavity 21, the lower side of the outer side wall of the cooling cylinder 12 is lower than the height of the through hole of the cooling furnace 2 bearing the feeding cylinder 11 and the discharging cylinder 13, so that the lower side of the cooling cylinder 12 can be immersed below the water surface of the water pool 211 at the bottom of the inner cavity 21, thereby accelerating the cooling speed.

[0026] Please refer to Figure 3 , the cooling furnace 2 comprises an upper furnace body 2a and a lower furnace body 2b, semicircular upper openings are formed at both ends of the upper furnace body 2a, and semicircular lower openings are formed at both ends of the lower furnace body 2b, so that when the upper furnace body is combined with the lower furnace body, the two upper openings and the lower openings respectively form through holes for the feeding cylinder 11 and the discharging cylinder 13 to extend out, and the second sealing device 8 is arranged at the through holes, and the second sealing device 8 can be a sealing bearing.

[0027] The above is combined with Figure 1The working principle of the lithium battery material cooling reaction furnace 100 is described in detail as follows:

[0028] First, the lithium battery material enters the adapter furnace 3, and the driving mechanism 5 drives the reaction furnace 1 to rotate in the cooling furnace 2. Then, the lithium battery material enters the cooling cylinder 12 through the feeding cylinder 11 of the reaction furnace 1, and is pushed forward by the pushing blade 1a and continuously mixed and stirred and contacted with the cylinder wall for heat conduction. In this process, the spraying device 4 is started, and the spray head 41 sprays water to the outer wall of the cooling cylinder 12. The cooling water flows down along the side wall of the cooling cylinder 12 from the top, so that the side wall of the cooling cylinder 12 is completely covered with cooling water, thereby uniformly taking away the heat of the cooling cylinder 12 and cooling the cooling cylinder 12. When the cooling water falls to the lower bottom of the inner cavity 21, a water pool 211 is formed at the lower bottom of the inner cavity 21, which can immerse the lower side wall of the cooling cylinder 12, thereby cooling the cooling cylinder 12 again. At the same time, the rotation of the cooling cylinder 12 drives the paddle 121, so that the paddle 121 continuously stirs the water in the water pool 211, and uses the water to flow towards the direction close to the discharge cylinder 13, so that the cooling water at the end close to the feeding cylinder 11 can flow to cool the cooling cylinder 12 again, and an active water flow is formed, which is convenient for flowing out of the drain 22 and being transported to the water supply system 42 by the circulation system for recycling cooling. Finally, the cooled lithium battery is output from the discharge cylinder 13.

[0029] Compared with the prior art, since the reaction furnace 1 is divided into the feeding cylinder 11, the cooling cylinder 12 and the discharge cylinder 13, the diameter of the cooling cylinder 12 is greater than that of the feeding cylinder 11 and the discharge cylinder 13, the cooling cylinder 12 is arranged in the inner cavity 21 of the cooling furnace 2, and the feeding cylinder 11 and the discharge cylinder 13 are used as support ends and transition ends, so that the spraying device 4 can be arranged in the cooling furnace 2. Moreover, the cooling water is continuously sprayed to the upper top side wall of the cooling cylinder 12 by the spray head 41, the lower bottom side wall of the cooling cylinder 12 can be immersed in the cooling water stored in the inner cavity 21, and the cooling cylinder 12 is continuously rotated, so that the material in the cooling cylinder 12 can be continuously stirred and contacted with the side wall of the cooling cylinder 12 for heat exchange, thereby achieving the purpose of rapid cooling. In addition, since the cooling cylinder 12 is continuously rotated during cooling, the outer side wall of the cooling cylinder 12 can be uniformly sprayed and cooled, and the service life of the reaction furnace 1 is not affected during long-term use. Furthermore, since the spraying device 4 is arranged on the cooling furnace 2, the cooling furnace 2 is in a static state, and the water pipes 93 of the spraying device 4 are in static docking, so that the connection structure of the water pipes 93 is simple and not easy to leak, the maintenance frequency is reduced, and the production efficiency is effectively improved.

[0030] The foregoing merely illustrates the principles of the application. It will be apparent to those skilled in the art that modifications in the embodiments described above can be made without departing from the spirit and scope of the application. Accordingly, the above description is intended for purposes of illustration only and should not be construed as in any way limiting the scope of the application, which is set forth in the following claims.

Claims

1. A lithium battery material cooling reaction furnace characterized by: The application relates to a lithium battery material cooling reaction furnace, which comprises a reaction furnace, a cooling furnace, a switching furnace, a spraying device and a driving mechanism, wherein the reaction furnace comprises a feeding cylinder, a cooling cylinder and a discharging cylinder; the cooling furnace is internally provided with an inner cavity; the cooling cylinder is located in the inner cavity; one end of the feeding cylinder extends out of the inner cavity and is rotationally connected with the switching furnace; the other end of the feeding cylinder extends out of the inner cavity; the diameter of the cooling cylinder is larger than that of the feeding cylinder and the discharging cylinder; the spraying device comprises a spraying head and a water supply system; the spraying head is arranged on the top and the inner side wall of the inner cavity in the axial direction and the circumferential direction of the cooling furnace; the water supply system is connected with the spraying head so that the spraying head sprays water on the surface of the cooling cylinder; the inner bottom of the inner cavity is provided with a drainage port for draining the sprayed water; the driving mechanism is arranged outside the cooling furnace and drives the rotation of the reaction furnace so that the material in the reaction furnace is uniformly cooled; the lithium battery material cooling reaction furnace further comprises a circulating device, which comprises a water pump, a control valve and a water pipe; the drainage port is arranged at one end of the inner cavity close to the discharging cylinder; the input end of the water pump is connected with the drainage port; the output end of the water pump is connected with the control valve; the control valve is connected with the water pipe; the water pipe is connected with the water supply system; the outer side wall of the cooling cylinder is circumferentially provided with paddles; the paddles have multiple groups and are arranged in the axial direction of the cooling cylinder; the paddles drive the water at the bottom of the inner cavity to flow from one end close to the feeding cylinder to the other end close to the discharging cylinder; the top of the cooling furnace is provided with an air inlet close to one end of the feeding cylinder, which communicates with the outside and the inner cavity; the top of the cooling furnace is provided with an air outlet close to one end of the discharging cylinder, which communicates with the outside and the inner cavity; the feeding cylinder, the cooling cylinder and the discharging cylinder are internally provided with pushing blades; the pushing blades in the feeding cylinder and the cooling cylinder drive the material to move towards the discharging cylinder; the setting direction of the pushing blades in the discharging cylinder is opposite to that of the pushing blades in the cooling cylinder; the diameters between the feeding cylinder and the cooling cylinder and between the discharging cylinder and the cooling cylinder gradually increase; the cooling furnace comprises an upper furnace body and a lower furnace body; the two ends of the upper furnace body are provided with semicircular upper openings; the two ends of the lower furnace body are provided with semicircular lower openings; when the upper furnace body covers the lower furnace body, the two upper openings and the lower openings respectively form through holes for the feeding cylinder and the discharging cylinder to extend out.

2. The lithium battery material cooling reaction furnace of claim 1, wherein: The feeding cylinder and the switching furnace are provided with a first sealing device.

3. The lithium battery material cooling reaction furnace of claim 1, wherein: The feeding cylinder and the cooling furnace and the discharging cylinder and the cooling furnace are provided with a second sealing device.

4. The lithium battery material cooling reaction furnace of claim 1, wherein: The air outlet is provided with an exhaust fan.

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