Device for inhibiting expansion furnace spraying of negative electrode graphitization box-type furnace
By introducing anti-direct injection upper nozzles, multiple sets of high-pressure release ports and high-pressure cooling structures into the graphitization box furnace, the problem of volatile components being unable to be discharged in time is solved, and safety and environmental protection are improved.
Patent Information
- Application Number
- CN202421947268.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-13
AI Technical Summary
During the graphitization process, the volatile components of the negative electrode material cannot be discharged in time, resulting in spray furnace accidents and environmental pollution. The prior art cannot effectively suppress the emission of volatile components.
A device for suppressing the expansion spraying furnace of the negative electrode graphitization box furnace is designed, including anti-direct injection upper nozzles, multiple sets of high-pressure release ports, power supply cables, high-pressure cooling structures, etc., to reduce safety risks by preventing volatile leakage, pressure relief and rapid cooling.
Effectively prevent volatile leakage, balance the pressure in the furnace, and quickly cool it, reducing the probability of sprayer accidents and reducing environmental pollution.
Smart Images
Figure CN223138325U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of graphitization box furnaces, in particular to a device for suppressing the expansion and blowout of a box furnace for negative electrode graphitization. Background Art
[0002] Negative electrode graphitization is one of the keys to improving battery performance. Graphitization can improve the electrical conductivity, mechanical strength and chemical stability of the battery negative electrode. At the same time, it can reduce the influence of internal reactions in the battery and slow down the processes such as the structural degradation and decarbonization of the negative electrode, thereby prolonging the service life of the battery. Since a large amount of volatile components are discharged from the negative electrode in the graphitization furnace when the temperature in the furnace is between 200 and 1000 °C, if they cannot be discharged in time, it may cause the accumulation of volatile components and result in a safety accident of blowout. When a large amount of volatile components escape, the combustion of the volatile components is incomplete, and a large amount of black smoke will be generated, causing environmental pollution or environmental protection accidents. Therefore, a device for suppressing the expansion and blowout of a box furnace for negative electrode graphitization is designed. Content of the Utility Model
[0003] The purpose of the utility model is to provide a device for suppressing the expansion and blowout of a box furnace for negative electrode graphitization to solve the above technical problems. To achieve the above purpose, the utility model adopts the following technical solutions:
[0004] A device for suppressing the expansion and blowout of a box furnace for negative electrode graphitization is applied to a box furnace and includes an anti-direct injection upper injection port, a high-pressure release port, a power supply cable, a front furnace door, and a high-pressure cooling structure. The front furnace door is connected to the front side of the box furnace. Multiple groups of anti-direct injection upper injection ports are arranged at equal intervals on the top side of the box furnace. The power supply cable is arranged on the inner top side of the box furnace, and the side end of the power supply cable passes through the side wall of the box furnace. Multiple groups of high-pressure release ports are arranged on both sides of the box furnace. The high-pressure cooling structure is arranged on the inner bottom side of the box furnace, and the side end of the high-pressure cooling structure passes through the side of the box furnace.
[0005] On the basis of the above technical solution, a graphitization processing coil, a coil power supply hanging rod, and a support cross bar are arranged in the box furnace. Multiple groups of support cross bars are arranged at equal intervals on the inner top side of the box furnace. The power supply cable is arranged on the top side of the support cross bar. A number of coil power supply hanging rods and graphitization processing coils are respectively arranged. The coil power supply hanging rod is fixed on the top side of the graphitization processing coil. The coil power supply hanging rod and the graphitization processing coil are arranged at equal intervals. The top ends of the number of coil power supply hanging rods are fixed on the bottom side of the support cross bar. The high-pressure cooling structure is arranged on the bottom side of the graphitization processing coil. The graphitization processing coil, the coil power supply hanging rod, and the power supply cable are electrically connected.
[0006] On the basis of the above technical solution, the anti-direct injection upper nozzle consists of an anti-direct injection cap, an extended ventilation pipe, and a ventilation hole. The ventilation hole is opened on the top side wall of the box furnace. The extended ventilation pipe is arranged on the top side of the ventilation hole. The anti-direct injection cap is arranged on the top side of the extended ventilation pipe. The high-pressure release port consists of a valve port pipe, a valve plate, a valve plate shaft, a high-strength limiting spring, and a spring fixing block. The valve plate shaft is arranged at the center of the valve port pipe. There are two groups of valve plates, which are arranged side by side up and down. The middle sections of the two groups of valve plates are connected to the valve plate shaft, and the valve plates can rotate around the valve plate shaft. The spring fixing blocks are oppositely arranged on the inner side of the side of the valve port pipe. The high-strength limiting springs are respectively fixed on the inner sides of the spring fixing blocks, and the inner ends of the high-strength limiting springs are respectively fixed on the side edges of the two groups of valve plates.
[0007] On the basis of the above technical solution, the high-pressure cooling structure consists of a crucible placement ring, a side end fixing plate, parallel ventilation pipes, and side end circulation pipe joints. The parallel ventilation pipes are arranged in parallel between two adjacent crucible placement rings, and the crucible placement ring and the parallel ventilation pipes are communicated with each other. There are two groups of side end circulation pipe joints, and the two groups of side end circulation pipe joints are respectively connected to both sides of the two parallel ventilation pipes at the side ends. The side end fixing plate is fixed on one side of the crucible placement ring and is fixed on the side wall of the box furnace. The crucible placement ring, the side end fixing plate, and the parallel ventilation pipes are all arranged on the inner bottom side of the box furnace. The side end circulation pipe joints pass through the side wall of the box furnace, and the graphitization processing coil is correspondingly arranged on the top side surface of the crucible placement ring.
[0008] Compared with the prior art, the present utility model has the following advantages: The present utility model optimizes the structural design of the graphitization box furnace, changes the internal structure and protection structure of the traditional graphitization box furnace, and has a crucible placement structure that can be connected to a high-pressure cooling system. Moreover, the structure can reduce the influence of direct injection and the danger caused by high pressure in the furnace, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is the overall appearance state diagram of the present utility model.
[0010] Figure 2 It is the half-sectional view of the structure of the present utility model when opened.
[0011] Figure 3 It is the half-sectional view of the anti-direct injection upper nozzle of the present utility model.
[0012] Figure 4 It is the half-sectional view of the high-pressure release port of the present utility model.
[0013] Figure 5 It is the schematic diagram of the high-pressure cooling structure of the present utility model.
[0014] In the figure: box furnace 1, anti-direct-injection upper nozzle 2, high-pressure release port 3, power supply cable 4, front furnace door 5, high-pressure cooling structure 6, graphitization processing coil 7, coil power supply hanging rod 8, support crossbar 9, anti-direct-injection cap 10, extended ventilation pipe 11, ventilation hole 12, valve port pipe 13, valve plate 14, valve plate shaft 15, high-strength limit spring 16, spring fixing block 17, crucible placement ring 18, side-end fixing plate 19, parallel ventilation pipe 20, side-end circulation pipe joint 21. Detailed implementation mode
[0015] The following further elaborates on the present utility model in conjunction with the accompanying drawings and specific implementations.
[0016] A device for suppressing the expansion and furnace explosion of a box furnace for negative electrode graphitization, applied to the box furnace 1, including an anti-direct-injection upper nozzle 2, a high-pressure release port 3, a power supply cable 4, a front furnace door 5, and a high-pressure cooling structure 6. The front furnace door 5 is connected to the front side of the box furnace 1. Multiple groups of the anti-direct-injection upper nozzles 2 are arranged at equal intervals on the top side of the box furnace 1. The power supply cable 4 is arranged on the inner top side of the box furnace 1, and the side end of the power supply cable 4 passes through the side wall of the box furnace 1. Multiple groups of the high-pressure release ports 3 are arranged on both sides of the box furnace 1. The high-pressure cooling structure 6 is arranged on the inner bottom side of the box furnace 1, and the side end of the high-pressure cooling structure 6 penetrates through the side of the box furnace 1.
[0017] Inside the box furnace 1, there are a graphitization processing coil 7, a coil power supply hanging rod 8, and a support crossbar 9. Multiple groups of the support crossbars 9 are arranged at equal intervals on the inner top side of the box furnace 1. The power supply cable 4 is arranged on the top side of the support crossbar 9. A number of groups of the coil power supply hanging rods 8 and graphitization processing coils 7 are respectively provided. The coil power supply hanging rod 8 is fixed on the top side of the graphitization processing coil 7. The coil power supply hanging rod 8 and the graphitization processing coil 7 are arranged at equal intervals. The tops of the multiple groups of coil power supply hanging rods 8 are fixed to the bottom side of the support crossbar 9. The high-pressure cooling structure 6 is arranged on the bottom side of the graphitization processing coil 7. The graphitization processing coil 7, the coil power supply hanging rod 8, and the power supply cable 4 are electrically connected.
[0018] The anti-direct injection upper injection port 2 is composed of an anti-direct injection cap 10, an extended ventilation pipe 11, and a ventilation hole 12. The ventilation hole 12 is opened on the top side wall of the box furnace 1. The extended ventilation pipe 11 is arranged on the top side of the ventilation hole 12. The anti-direct injection cap 10 is arranged on the top side of the extended ventilation pipe 11. The high-pressure release port 3 is composed of a valve port pipe 13, a valve plate 14, a valve plate shaft 15, a high-strength limit spring 16, and a spring fixing block 17. The valve plate shaft 15 is arranged at the center of the valve port pipe 13. There are two groups of valve plates 14, and the two groups of valve plates 14 are arranged side by side up and down. The middle sections of the two groups of valve plates 14 are connected to the valve plate shaft 15, and the valve plate 14 can rotate around the valve plate shaft 15. The spring fixing blocks 17 are oppositely arranged on the inner side of the side of the valve port pipe 13. The high-strength limit springs 16 are respectively fixed on the inner sides of the spring fixing blocks 17, and the inner ends of the high-strength limit springs 16 are respectively fixed on the side edges of the two groups of valve plates 14.
[0019] The high-pressure cooling structure 6 is composed of a crucible placement ring 18, a side end fixing plate 19, parallel pipes 20, and side end circulation pipe joints 21. The parallel pipes 20 are arranged in parallel between two adjacent crucible placement rings 18, and the crucible placement ring 18 and the parallel pipes 20 are communicated with each other. There are two groups of side end circulation pipe joints 21, and the two groups of side end circulation pipe joints 21 are respectively connected to the two sides of the two parallel pipes 20 at the side ends. The side end fixing plate 19 is fixed on one side of the crucible placement ring 18, and the side end fixing plate 19 is fixed on the side wall of the box furnace 1. The crucible placement ring 18, the side end fixing plate 19, and the parallel pipes 20 are all arranged on the inner bottom side of the box furnace 1. The side end circulation pipe joints 21 pass through the side wall of the box furnace 1. The graphitization processing coil 7 is correspondingly arranged on the top side surface of the crucible placement ring 18.
[0020] The working principle of the present utility model: The main principles of this device include anti-direct injection, high-pressure relief inside the furnace, and rapid cooling.
[0021] For anti-direct injection, during the working process, while the volatile components normally generated inside the furnace can be released, it is possible to prevent the external leakage port from directly spraying into the environment. The anti-direct injection cap 10 can block the outer port of the extended ventilation pipe 11, and a treatment device for volatile exhaust gas can also be installed on the outer sides of the anti-direct injection cap 10 and the extended ventilation pipe 11 to treat the volatile exhaust gas.
[0022] High-pressure relief inside the furnace is to prevent the explosion of the box furnace 1 caused by the excessive expansion of high-pressure gas generated during the processing inside the box furnace 1. The design of the high-pressure release port 3 can push the valve plate 14 outward when high-pressure gas is generated inside. Subsequently, the valve plate 14 rotates around the valve plate shaft 15. While pushing the valve plate 14, the high-strength limit spring 16 provides an inward thrust for the valve plate 14, forcing the valve plate 14 to reset, avoiding damage to surrounding equipment caused by excessive release of high-pressure gas. Its main function is to balance the pressure inside the furnace and avoid excessive damage.
[0023] During the appropriate internal processing of rapid cooling, an external cooling system connected through the crucible placement ring 18, parallel through-pipe 20, and side-end circulation pipe joint 21 is used to achieve the purpose of rapid cooling, and also to balance the temperature inside the box furnace 1, avoiding situations such as furnace explosion and furnace spraying caused by excessive temperature.
[0024] The above is the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions, and variations made to the implementation manners still fall within the protection scope of the present invention.
Claims
1. A device for suppressing the expansion and blowout of a box furnace for graphitizing the negative electrode, characterized in that, Applied to a box furnace (1), including an anti-direct injection upper nozzle (2), a high-pressure release port (3), a power supply cable (4), a front furnace door (5), and a high-pressure cooling structure (6). The front furnace door (5) is connected to the front side of the box furnace (1). There are multiple groups of the anti-direct injection upper nozzles (2), and the multiple groups of anti-direct injection upper nozzles (2) are arranged at equal intervals on the top side of the box furnace (1). The power supply cable (4) is arranged on the inner top side of the box furnace (1), and the side end of the power supply cable (4) passes through the side wall of the box furnace (1). There are multiple groups of the high-pressure release ports (3), and the multiple groups of high-pressure release ports (3) are arranged on both sides of the box furnace (1). The high-pressure cooling structure (6) is arranged on the inner bottom side of the box furnace (1), and the side end of the high-pressure cooling structure (6) penetrates through the side of the box furnace (1).
2. The device for suppressing the expansion and blowout of the negative electrode graphitization box furnace according to claim 1, wherein Inside the box furnace (1), there are a graphitization processing coil (7), a coil power supply hanging rod (8), and a support cross bar (9). There are multiple groups of the support cross bars (9), and the multiple groups of support cross bars (9) are arranged at equal intervals on the inner top side of the box furnace (1). The power supply cable (4) is arranged on the top side of the support cross bar (9). There are several groups of the coil power supply hanging rods (8) and graphitization processing coils (7) respectively. The coil power supply hanging rod (8) is fixed on the top side of the graphitization processing coil (7). The coil power supply hanging rod (8) and the graphitization processing coil (7) are arranged at equal intervals. The tops of the several groups of coil power supply hanging rods (8) are fixed on the bottom side of the support cross bar (9). The high-pressure cooling structure (6) is arranged on the bottom side of the graphitization processing coil (7). The graphitization processing coil (7), the coil power supply hanging rod (8), and the power supply cable (4) are electrically connected.
3. The device for suppressing the expansion and blowout of the negative electrode graphitization box furnace according to claim 1, wherein, The anti-direct injection upper nozzle (2) consists of an anti-direct injection cap (10), an extended ventilation pipe (11), and a ventilation hole (12). The ventilation hole (12) is opened on the top side wall of the box furnace (1). The extended ventilation pipe (11) is arranged on the top side of the ventilation hole (12). The anti-direct injection cap (10) is arranged on the top side of the extended ventilation pipe (11). The high-pressure release port (3) consists of a valve port pipe (13), a valve plate (14), a valve plate shaft (15), a high-strength limiting spring (16), and a spring fixing block (17). The valve plate shaft (15) is arranged at the center of the valve port pipe (13). There are two groups of the valve plates (14), and the two groups of valve plates (14) are arranged side by side vertically. The middle sections of the two groups of valve plates (14) are connected to the valve plate shaft (15), and the valve plate (14) can rotate around the valve plate shaft (15) as the axis. The spring fixing blocks (17) are oppositely arranged on the inner side of the side of the valve port pipe (13). The high-strength limiting springs (16) are respectively fixed on the inner sides of the spring fixing blocks (17), and the inner ends of the high-strength limiting springs (16) are respectively fixed on the side edges of the two groups of valve plates (14).
4. The device for suppressing the expansion and blowout of the negative electrode graphitization box furnace according to claim 2, characterized in that, The high-pressure cooling structure (6) is composed of a crucible placement ring (18), a side-end fixing plate (19), a parallel pipe (20), and a side-end circulation pipe joint (21). The parallel pipes (20) are arranged in parallel between two adjacent crucible placement rings (18), and the crucible placement ring (18) and the parallel pipes (20) are communicated with each other. There are two sets of side-end circulation pipe joints (21), and the two sets of side-end circulation pipe joints (21) are respectively connected to both sides of the two parallel pipes (20) at the side end. The side-end fixing plate (19) is fixed on one side of the crucible placement ring (18) and is fixed on the side wall of the box furnace (1). The crucible placement ring (18), the side-end fixing plate (19), and the parallel pipes (20) are all arranged on the inner bottom side of the box furnace (1). The side-end circulation pipe joint (21) passes through the side wall of the box furnace (1). The graphitization processing coil (7) is correspondingly arranged on the top side of the crucible placement ring (18).