CN221223342U - Continuous tunnel furnace system for producing lithium battery cathode material - Google Patents
Continuous tunnel furnace system for producing lithium battery cathode material Download PDFInfo
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- CN221223342U CN221223342U CN202322664929.1U CN202322664929U CN221223342U CN 221223342 U CN221223342 U CN 221223342U CN 202322664929 U CN202322664929 U CN 202322664929U CN 221223342 U CN221223342 U CN 221223342U
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 36
- 239000010406 cathode material Substances 0.000 title claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 124
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 83
- 239000010439 graphite Substances 0.000 claims abstract description 83
- 230000007246 mechanism Effects 0.000 claims abstract description 64
- 238000007599 discharging Methods 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000005087 graphitization Methods 0.000 claims abstract description 15
- 238000007790 scraping Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims description 97
- 238000001816 cooling Methods 0.000 claims description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 65
- 239000010405 anode material Substances 0.000 claims description 12
- 238000010924 continuous production Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910021383 artificial graphite Inorganic materials 0.000 description 4
- 238000007600 charging Methods 0.000 description 4
- 239000007770 graphite material Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910021382 natural graphite Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002006 petroleum coke Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 241000274582 Pycnanthus angolensis Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011331 needle coke Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a continuous tunnel furnace system for producing lithium battery cathode materials, which comprises: the device comprises a furnace body unit, an automatic pushing unit, an automatic transmission line body, an automatic discharging mechanism, an automatic feeding mechanism and an automatic scraping mechanism; the automatic feeding mechanism, the automatic scraping mechanism, the automatic pushing unit, the furnace body unit and the automatic discharging mechanism are sequentially connected, and the automatic discharging mechanism is connected with the automatic feeding mechanism through an automatic transmission line body so as to realize that the graphite crucible after discharging and discharging is conveyed to the automatic feeding mechanism through the automatic transmission line body to load graphite powder; the automatic scraping mechanism is used for flattening graphite powder loaded in the graphite crucible and covering the graphite pressing plate; the automatic pushing unit is used for pushing the graphite crucible covered with the pressing plate into the furnace body unit; the furnace body unit is used for realizing graphite powder graphitization to obtain the lithium battery cathode material. The utility model has the advantages of compact structure, high automation degree, high production efficiency and the like.
Description
Technical Field
The utility model belongs to the technical field of lithium battery cathode material production equipment, and particularly relates to a continuous tunnel furnace system for producing lithium battery cathode materials.
Background
Currently, lithium ion battery anode materials include natural graphite materials, artificial graphite materials, silicon-based and other anode materials, etc. The main current cathode materials are natural graphite materials and artificial graphite materials, and in view of the difference of the two materials in factors such as cost, energy density, cycle life, quick charge rate, processability and the like, the former is mainly used in the consumer electronics field, and the latter gradually becomes the first choice of the cathode power battery.
The artificial graphite is prepared with petroleum coke and needle coke as main material and through heating to 2800 deg.c in protecting medium inside high temperature electric furnace, and has improved spatial structure, high volume density, high electric conductivity, high heat conductivity, high corrosion resistance and high machining performance.
At present, the main current graphitizing method of the lithium battery cathode material mainly comprises the steps of sintering at high temperature through an Acheson furnace and a box body furnace, and mainly has the following defects:
(1) An Acheson furnace is generally adopted in the graphitization link, the process belongs to intermittent direct current indirect heating, a negative electrode material to be processed is filled in a cylindrical or square graphite crucible, the crucible is placed in the furnace for heating, and petroleum coke is filled in the crucible as a conductive material and a heat insulation material, so that a current loop is formed in the furnace. The technical route is mature, the complexity of the charging and sucking procedures is moderate, the crucible placement precision in the furnace is required, and the operability is high; however, the Acheson graphitizing furnace has high energy consumption, only 30% of electric energy is used for graphitizing the product, and a large amount of auxiliary materials are consumed in the process along with the emission of harmful gases, so that the cost and the pressure are high.
(2) The box furnace is based on an Acheson graphitizing furnace, a carbon plate box body is arranged in the furnace, the size of a crucible is enlarged, the box body and materials are utilized to generate heat, the use efficiency of the space in the furnace is essentially improved by increasing the single furnace charging amount, the consumption of heat-insulating resistance materials is reduced, the power consumption and the raw material cost are reduced, and the profit capability of enterprises is improved. However, the requirements on the process grasping degree and the technical level are higher, the precision of the box board splicing process is higher, the loading and sucking operation difficulty is high, the stability of the produced product is poor, the requirements of different customers and different types of products on graphitization processing are different, and only the products with the same processing requirement can be loaded in a single furnace processing process.
Disclosure of utility model
The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a continuous tunnel furnace system for producing lithium battery cathode materials, which has the advantages of compact structure, convenient operation, high automation degree and high production efficiency.
In order to solve the technical problems, the utility model adopts the following technical scheme:
A continuous tunnel furnace system for producing lithium battery anode material, comprising: the device comprises a furnace body unit, an automatic pushing unit, an automatic transmission line body, an automatic discharging mechanism, an automatic feeding mechanism and an automatic scraping mechanism; the automatic feeding mechanism, the automatic scraping mechanism, the automatic pushing unit, the furnace body unit and the automatic discharging mechanism are sequentially connected, and the automatic discharging mechanism is connected with the automatic feeding mechanism through an automatic transmission line body so as to realize that the graphite crucible after discharging and discharging is conveyed to the automatic feeding mechanism through the automatic transmission line body to load graphite powder; the automatic scraping mechanism is used for flattening graphite powder loaded in the graphite crucible and covering a graphite pressing plate; the automatic pushing unit is used for pushing the graphite crucible covered with the pressing plate into the furnace body unit; the furnace body unit is used for realizing graphite powder graphitization to obtain the lithium battery cathode material.
As a further improvement of the utility model, the furnace body unit comprises a preheating furnace body, a high-temperature furnace body, an air cooling furnace body and a water cooling furnace body which are connected in sequence; the high-temperature furnace body is used for realizing graphite powder graphitization, the air-cooled furnace body and the water-cooled furnace body are used for realizing graphitized graphite powder cooling, and the discharge end of the water-cooled furnace body is connected with the automatic discharging mechanism through an automatic transmission line body; the feeding end of the preheating furnace body is connected with an automatic pushing unit, and the automatic pushing unit is used for conveying graphite crucibles loaded with graphite powder into the furnace body unit and sequentially circulating among the preheating furnace body, the high-temperature furnace body, the air-cooled furnace body and the water-cooled furnace body so as to finish continuous production of lithium battery cathode materials.
As a further improvement of the utility model, the automatic pushing unit comprises a horizontal pushing module, a feeding platform and a cleaning bin, wherein the discharging end of the cleaning bin is connected with the feeding end of the preheating furnace body, and the horizontal pushing module is used for pushing the graphite crucible loaded with graphite powder to sequentially enter the feeding platform and the cleaning bin and pushing the cleaned graphite crucible into the preheating furnace body; when the horizontal pushing module continuously pushes the graphite crucible to enter the cleaning bin and the preheating furnace body, the graphite crucibles at adjacent positions in the furnace body unit push each other, so that the graphite crucible can circulate among the preheating furnace body, the high-temperature furnace body, the air cooling furnace body and the water cooling furnace body in sequence.
As a further improvement of the present utility model, the traverse pushing module includes: the device comprises a first transverse pushing module, a second transverse pushing module, a third transverse pushing module and a fourth transverse pushing module; the cleaning bin comprises a first cleaning bin and a second cleaning bin; the first transverse pushing module is arranged at the side part of the feeding platform and used for pushing the graphite crucible to the feeding platform; the first cleaning bin and the second transverse pushing module are oppositely arranged at two ends of the feeding platform, and the second transverse pushing module is used for pushing the graphite crucible on the feeding platform into the first cleaning bin; the fourth transverse pushing module is arranged at the side part of the first cleaning bin and used for pushing the graphite crucible in the first cleaning bin into the second cleaning bin; the third horizontal pushing module is positioned at the side part of the second cleaning bin and is used for pushing the graphite crucible in the second cleaning bin into the preheating furnace body and providing a driving force for the graphite crucible to circulate among the preheating furnace body, the high-temperature furnace body, the air cooling furnace body and the water cooling furnace body in sequence.
As a further improvement of the utility model, a second gate is arranged at the joint of the first cleaning bin and the second cleaning bin so as to realize sealing and isolation between the first cleaning bin and the second cleaning bin; the second gate is connected with the sixth driving piece so as to realize automatic opening or closing of the second gate.
As a further improvement of the utility model, the first transverse pushing module comprises a first frame, a first driving piece and a cart; the first frame is connected with the pan feeding platform lateral part, and first driving piece and shallow all set up in first frame, and the output of first driving piece is connected with the shallow, under the drive of first driving piece, the graphite crucible propelling movement in the shallow with first frame is to the pan feeding platform on.
As a further improvement of the utility model, the second transverse pushing module comprises a second frame, a second driving piece and a pushing head; the second frame is connected with the pan feeding platform lateral part, and second driving piece and pushing head all set up in the second frame, and the output of second driving piece is connected with the pushing head, under the drive of second driving piece, pushes away the graphite crucible propelling movement on the pan feeding platform to in the first cleaning bin.
As a further improvement of the utility model, the third transverse pushing module comprises a third frame, a third driving piece and a first main pushing rod; the third rack is connected with the side part of the second cleaning bin, the third driving piece and the first main push rod are arranged on the third rack, one end of the first main push rod is connected with the output end of the third driving piece, and the other end of the first main push rod extends into the second cleaning bin and is connected with the pushing component arranged in the second cleaning bin; under the drive of the third driving piece, the first main push rod drives the pushing component to move so as to push the graphite crucible in the second cleaning bin into the preheating furnace body.
As a further improvement of the utility model, the fourth transverse pushing module comprises a fourth frame and a fourth driving piece, wherein the fourth frame is connected with the side part of the first cleaning bin, the fourth driving piece is arranged on the fourth frame, the output end of the fourth driving piece extends into the first cleaning bin and is connected with a pushing component arranged in the first cleaning bin, and the fourth driving piece drives the pushing component to move so as to push the graphite crucible in the first cleaning bin into the second cleaning bin.
As a further improvement of the utility model, the air cooling furnace body is provided with an air cooling assembly, the air cooling assembly comprises a circulating fan and an air cooling pipe, and two ends of the air cooling pipe are respectively communicated with the air cooling furnace body and the circulating fan so as to realize air cooling in the air cooling furnace body;
The water cooling furnace body is provided with a water cooling assembly, and the water cooling assembly comprises a water inlet main pipe, a water inlet branch pipe, a finned pipe, a water outlet branch pipe and a water outlet main pipe; the water inlet main pipe is connected with a plurality of water inlet branch pipes in parallel, the water outlet main pipe is connected with a plurality of water outlet branch pipes in parallel, the finned tubes are arranged in the water cooling furnace body, the input ends of the finned tubes are connected with the water inlet branch pipes, and the output ends of the finned tubes are connected with the water outlet branch pipes.
Compared with the prior art, the utility model has the advantages that:
1. According to the continuous tunnel furnace system for producing the lithium battery cathode material, the furnace body unit, the automatic pushing unit, the automatic transmission line body, the automatic discharging mechanism, the automatic feeding mechanism and the automatic scraping mechanism form the continuous tunnel furnace system with a compact structure, the automatic discharging mechanism is connected with the automatic feeding mechanism through the automatic transmission line body, the graphite crucible discharged from the furnace is conveyed to the automatic feeding mechanism through the automatic transmission line body to be loaded with graphite powder, and then continuously flows into the furnace body unit to be graphitized, the automation degree of the whole process is high, a large amount of manpower and time are saved, the production efficiency is improved, the production cost is reduced, the problems of low heat energy utilization rate, low production efficiency, low product quality and the like caused by repeated charging, heating and discharging procedures of an intermittent furnace are solved, and the quality of the lithium battery cathode material is improved.
2. According to the continuous tunnel furnace system for producing the lithium battery cathode material, the furnace body unit is divided into the preheating furnace body, the high-temperature furnace body, the air cooling furnace body and the water cooling furnace body which are sequentially connected, the discharge end of the water cooling furnace body is connected with the automatic discharge unit through the automatic transmission line body, the feed end of the preheating furnace body is connected with the automatic pushing unit, the graphite crucible loaded with graphite powder enters the preheating furnace body under the pushing of the automatic pushing unit, the graphite crucible loaded with graphite powder is continuously fed along with the continuous pushing of the automatic pushing unit, the graphite crucible in the preheating furnace body is pushed to enter the high-temperature furnace body, the air cooling furnace body and the water cooling furnace body, the preheating temperature rise and the high-temperature graphitization of the graphite powder are completed, the final graphitized graphite powder is output after the air cooling and the water cooling are carried out, the whole process is continuously produced, the automation degree is high, a large amount of time is saved, the production efficiency is improved, and the quality uniformity of a lithium battery cathode material product is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a continuous tunnel furnace system for producing lithium battery anode materials according to the present utility model.
Fig. 2 is a schematic diagram of a part of the structure of a furnace unit in the continuous tunnel furnace system for producing lithium battery cathode materials according to the present utility model.
Fig. 3 is a schematic structural diagram of an automatic pushing unit in the continuous tunnel furnace system for producing lithium battery cathode materials.
Legend description: 1. preheating a furnace body; 2. a high temperature furnace body; 3. an air-cooled furnace body; 4. a water-cooled furnace body; 5. an air cooling assembly; 51. a circulating fan; 52. an air-cooled tube; 6. a water cooling assembly; 61. a water inlet main pipe; 62. a water inlet branch pipe; 63. a control valve; 64. a fin tube; 65. a water outlet branch pipe; 66. a water outlet main pipe; 7. a first transverse pushing module; 71. a first frame; 72. a first driving member; 73. a cart; 8. a feeding platform; 9. a second transverse pushing module; 91. a second frame; 92. a second driving member; 93. pushing heads; 94. a first auxiliary push rod; 10. a third transverse pushing module; 101. a third frame; 102. a third driving member; 103. a first main push rod; 104. a second auxiliary push rod; 11. a fourth horizontal pushing module; 111. a fourth frame; 112. a fourth driving member; 113. a third auxiliary push rod; 12. a first cleaning bin; 13. a second cleaning bin; 14. a first gate; 15. a second gate; 16. a fifth driving member; 17. a sixth driving member; 18. an automatic transmission line body; 19. an automatic discharging mechanism; 20. an automatic feeding mechanism; 21. an automatic scraping mechanism.
Detailed Description
The utility model is further described below in connection with the drawings and the specific preferred embodiments, but the scope of protection of the utility model is not limited thereby.
Examples
As shown in fig. 1 to 3, the continuous tunnel furnace system for producing lithium battery anode material of the present utility model comprises a furnace body unit, an automatic pushing unit, an automatic transmission line body 18, an automatic discharging mechanism 19, an automatic feeding mechanism 20 and an automatic scraping mechanism 21. The automatic feeding mechanism 20, the automatic scraping mechanism 21, the automatic pushing unit, the furnace body unit and the automatic discharging mechanism 19 are sequentially connected, and the automatic discharging mechanism 19 is connected with the automatic feeding mechanism 20 through the automatic transmission line body 18 so as to realize that the graphite crucible after discharging and discharging is conveyed to the automatic feeding mechanism 20 through the automatic transmission line body 18 for loading graphite powder; the automatic leveling mechanism 21 is used for leveling graphite powder loaded in the graphite crucible and covering a graphite pressing plate; the automatic pushing unit is used for pushing the graphite crucible covered with the pressing plate into the furnace body unit; the furnace body unit is used for realizing graphite powder graphitization to obtain the lithium battery cathode material. It will be appreciated that the automatic transmission line body 18, the automatic discharging mechanism 19, the automatic feeding mechanism 20 and the automatic scraping mechanism 21 may be in conventional arrangements in the art, and will not be described herein.
In the embodiment, the furnace body unit, the automatic pushing unit, the automatic transmission line body 18, the automatic discharging mechanism 19, the automatic feeding mechanism 20 and the automatic strickling mechanism 21 form a continuous tunnel furnace system with a compact structure, the automatic discharging mechanism 19 is connected with the automatic feeding mechanism 20 through the automatic transmission line body 18, the graphite crucible after discharging is conveyed to the automatic feeding mechanism 20 through the automatic transmission line body 18 to be loaded with graphite powder, and then continuously flows into the furnace body unit to be graphitized, the automatic continuous production of lithium battery cathode materials is realized, the product stability is also improved, the production cost is reduced, the problems of low heat energy utilization rate, low production efficiency, low product quality and the like caused by repeated processes of charging, heating, discharging and the like of an intermittent furnace are solved, and the quality of lithium battery cathode materials is improved.
As shown in fig. 1, in this embodiment, the furnace unit includes a preheating furnace 1, a high-temperature furnace 2, an air-cooled furnace 3, and a water-cooled furnace 4, which are connected in this order. The high-temperature furnace body 2 can be heated by adopting graphite electrodes, and the temperature in the hearth is heated to 3000 ℃ so as to realize graphite powder graphitization. The air-cooled furnace body 3 and the water-cooled furnace body 4 are used for realizing graphitized graphite powder cooling, and the discharge end of the water-cooled furnace body 4 is connected with an automatic discharging mechanism 19 through an automatic transmission line body 18. The feeding end of the preheating furnace body 1 is connected with an automatic pushing unit, and the automatic pushing unit is used for conveying graphite crucibles loaded with graphite powder into the furnace body unit and sequentially circulating among the preheating furnace body 1, the high-temperature furnace body 2, the air-cooled furnace body 3 and the water-cooled furnace body 4 so as to finish continuous production of lithium battery cathode materials.
As shown in fig. 2, in this embodiment, an air cooling assembly 5 is disposed on the air cooling furnace body 3, and the air cooling assembly 5 includes a circulating fan 51 and an air cooling pipe 52. The two ends of the air cooling pipe 52 are respectively communicated with the air cooling furnace body 3 and the circulating fan 51 so as to realize air cooling in the air cooling furnace body 3.
The water cooling furnace body 4 is provided with a water cooling assembly 6, and the water cooling assembly 6 comprises a water inlet main pipe 61, a water inlet branch pipe 62, a fin pipe 64, a water outlet branch pipe 65 and a water outlet main pipe 66. The water inlet main pipe 61 is connected with a plurality of water inlet branch pipes 62 in parallel, the water outlet main pipe 66 is connected with a plurality of water outlet branch pipes 65 in parallel, the finned tubes 64 are arranged in the water cooling furnace body 4, the input ends of the finned tubes 64 are connected with the water inlet branch pipes 62, and the output ends of the finned tubes 64 are connected with the water outlet branch pipes 65. The water inlet branch pipe 62 and the water outlet branch pipe 65 are respectively provided with a corresponding control valve 63 for controlling the on-off of the cooling water path. It can be understood that in this embodiment, the outside of the high-temperature furnace body 2 can also be cooled by water in a water drum manner, so as to achieve a better cooling effect; a flue opening is arranged at 1200 ℃ for discharging waste gas and tar in the furnace so as to prevent tar from dripping on the product to influence the quality of the product.
As shown in fig. 1, in this embodiment, the furnace unit includes two preheating furnace bodies 1, five high-temperature furnace bodies 2, one air-cooled furnace body 3 and three water-cooled furnace bodies 4, which are sequentially connected in series, and the graphite powder is preheated, graphitized and cooled to obtain a high-quality graphitized product. The interior of the preheating furnace body 1 is built by adopting a light heat-insulating material and refractory bricks; the high-temperature furnace body 2 can be arranged as a water-cooling furnace body, is formed by splicing and welding 7 water bags up, down, left and right, is used for cooling the furnace body, is built by adopting a light heat-insulating material and a graphite felt, and has quick temperature rise and good heat-insulating effect; the air-cooled furnace body 3 is built by adopting a light heat-insulating material, and is provided with an air-cooled pipe 52 and a circulating fan 51, so that the cooling of products is accelerated; the water-cooling furnace body 4 is built by adopting a light heat-insulating material, and is provided with a water-cooling fin tube to accelerate the cooling of the product. In other embodiments, the number of the preheating furnace body 1, the high-temperature furnace body 2, the air cooling furnace body 3 and the water cooling furnace body 4 can be flexibly set according to production requirements. The specific structures of the preheating furnace body 1 and the high-temperature furnace body 2 can be set by adopting a conventional tunnel furnace in the field, and are not repeated here.
In this embodiment, through dividing into the preheating furnace body 1, high temperature furnace body 2, forced air cooling furnace body 3 and water-cooling furnace body 4 that connect gradually with the furnace body unit, the discharge end and the automatic ejection of compact unit connection of water-cooling furnace body 4, the pan feeding end of preheating furnace body 1 is then with automatic pushing unit connection, under the promotion of automatic pushing unit, the graphite crucible that has loaded graphite powder gets into preheating furnace body 1, along with the continuous feeding of graphite crucible that promotes of automatic pushing unit, graphite crucible in the preheating furnace body will be promoted and advance get into high temperature furnace body 2, forced air cooling furnace body 3 and water-cooling furnace body 4, the preheating intensification of graphite powder and high temperature graphitization have been accomplished, and final graphitization product has also been output after having passed through forced air cooling and water-cooling two-stage cooling, and whole process serialization production, and degree of automation is high, a large amount of time has been practiced thrift, production efficiency has been improved, simultaneously also ensured graphitization product quality uniformity.
In this embodiment, the automatic pushing unit includes a horizontal pushing module, a feeding platform 8 and a cleaning bin. The discharge end of the cleaning bin is connected with the feeding end of the preheating furnace body 1, and the horizontal pushing module is used for pushing the graphite crucible loaded with graphite powder to sequentially enter the feeding platform 8 and the cleaning bin and pushing the cleaned graphite crucible into the preheating furnace body 1. When the horizontal pushing module continuously pushes the graphite crucible to enter the cleaning bin and the preheating furnace body 1, the graphite crucibles at adjacent positions in the furnace body unit push each other, so that graphite powder can circulate among the preheating furnace body 1, the high-temperature furnace body 2, the air cooling furnace body 3 and the water cooling furnace body 4 in sequence. By arranging the cleaning bin, the oxygen content of the gas at the inlet of the preheating furnace body 1 is less than 50ppm, so that the oxygen content in the furnace body unit is ensured to reach the production index, and the oxidation of the product at high temperature is prevented.
In this embodiment, the artificial graphite is poured into the graphite crucible through the automatic feeding mechanism 20, the graphite powder in the graphite crucible is flattened and covered by the graphite pressing plate by the automatic flattening mechanism 21, the graphite powder is conveyed to the automatic pushing unit through the automatic transmission line body, pushed onto the rod frame of the cleaning bin through the transverse pushing module, pushed into the hearth through the transverse pushing module, and passes through the preheating furnace body 1 of the low-temperature section, the high-temperature furnace body 2 of the graphitization section of 3000 ℃ under the protection of nitrogen atmosphere, the air-cooled furnace body 3 of the air-cooled cooling section and the water-cooled furnace body 4 of the water-cooled cooling section, so that the graphite powder in the graphite crucible reaches the tapping temperature below 100 ℃, and then conveyed to the automatic discharging mechanism through the automatic transmission line body 18 for automatic discharging, thereby completing the whole graphitization process.
As shown in fig. 3, in this embodiment, the lateral pushing module includes: a first transverse pushing module 7, a second transverse pushing module 9, a third transverse pushing module 10 and a fourth transverse pushing module 11. The washing compartment comprises a first washing compartment 12 and a second washing compartment 13. The first transverse pushing module 7 is arranged at the side part of the feeding platform 8 and is used for pushing the graphite crucible loaded with graphite powder to the feeding platform 8; the first cleaning bin 12 and the second transverse pushing module 9 are oppositely arranged at two ends of the feeding platform 8, and the second transverse pushing module 9 is used for pushing the graphite crucible on the feeding platform 8 into the first cleaning bin 12. The fourth transverse pushing module 11 is arranged at the side part of the first cleaning bin 12 and is used for pushing the graphite crucible in the first cleaning bin 12 into the second cleaning bin 13. The third horizontal pushing module 10 is located at the side of the second cleaning bin 13, and is used for pushing the graphite crucible in the second cleaning bin 13 into the preheating furnace body 1, and providing driving force for sequentially circulating the graphite crucible among the preheating furnace body 1, the high-temperature furnace body 2, the air-cooled furnace body 3, the water-cooled furnace body 4 and the automatic discharging unit.
In this embodiment, as shown in fig. 3, a first gate 14 is disposed at a connection portion between the feeding platform 8 and the first cleaning bin 12, so as to realize sealing and isolation between the feeding platform 8 and the first cleaning bin 12. The first shutter 14 is connected to the fifth driving member 16 to enable the first shutter 14 to be automatically opened or closed. In this embodiment, the fifth driving member 16 is a hydraulic cylinder. In other embodiments, the fifth driver 16 may employ a pneumatic cylinder or an electric push rod or a servo motor.
As shown in fig. 3, in this embodiment, a second gate 15 is disposed at the connection position between the first cleaning bin 12 and the second cleaning bin 13 to realize sealing isolation between the first cleaning bin 12 and the second cleaning bin 13; the second shutter 15 is connected to a sixth driving member 17 to automatically open or close the second shutter 15. In this embodiment, the sixth driving member 17 is a hydraulic cylinder. In other embodiments, the sixth driver 17 may employ a pneumatic cylinder or an electric push rod or a servo motor.
As shown in fig. 3, in the present embodiment, the first traverse module 7 includes a first frame 71, a first driving member 72, and a cart 73. The first frame 71 is connected with the side of the feeding platform 8, the first driving member 72 and the cart 73 are both arranged on the first frame 71, corresponding pushing heads are arranged on the cart 73, the output end of the first driving member 72 is connected with the cart 73 through a bearing (not shown in the figure), and corresponding tracks are arranged on the first frame 71 so that the cart 73 can move. Driven by the first driving member 72, the cart 73 pushes the graphite crucible on the first frame 71 onto the loading platform 8. In this embodiment, the first driving member 72 is a hydraulic cylinder. In other embodiments, the first driver 72 may employ a pneumatic cylinder or a motorized push rod or a servo motor.
As shown in fig. 3, in the present embodiment, the second lateral pushing module 9 includes a second frame 91, a second driving member 92, a push head 93, and a first auxiliary push rod 94. The second frame 91 is connected with the pan feeding platform 8 lateral part, and second driving piece 92, push head 93 and first auxiliary push rod 94 all set up in the second frame 91, and the output of second driving piece 92 is connected with push head 93 middle part, and push head 93 both sides are connected first auxiliary push rod 94 respectively, under the drive of second driving piece 92, push head 93 carries the graphite crucible on the pan feeding platform 8 to in the first cleaning bin 12. In this embodiment, the second driving member 92 is a hydraulic cylinder. In other embodiments, the second driver 92 may employ a pneumatic cylinder or a motorized push rod or a servo motor.
As shown in fig. 3, in the present embodiment, the third lateral pushing module 10 includes a third frame 101, a third driving member 102, a first main pushing rod 103, and a second auxiliary pushing rod 104. The third frame 101 is connected with the second cleaning bin 13 lateral part, and third driving piece 102, first main push rod 103 and second auxiliary push rod 104 all set up on third frame 101, and the one end of first main push rod 103 is connected with the output of third driving piece 102, and the other end of first main push rod 103 stretches into in the second cleaning bin 13 to be connected with the pushing component that sets up in the second cleaning bin 13. Second auxiliary push rods 104 are further arranged on two sides of the first main push rod 103, and the second auxiliary push rods 104 also extend into the second cleaning bin 13 and are connected with a pushing component arranged in the second cleaning bin 13. Under the drive of the third driving piece 102, the first main push rod 103 drives the pushing component to move so as to push the graphite crucible in the second cleaning bin 13 into the preheating furnace body 1. In this embodiment, the third driving member 102 is a hydraulic cylinder. In other embodiments, the third driver 102 may employ a pneumatic cylinder or a motorized push rod or a servo motor.
As shown in fig. 3, in this embodiment, the fourth transverse pushing module 11 includes a fourth frame 111, a fourth driving member 112 and a third auxiliary pushing rod 113, where the fourth frame 111 is connected to a side portion of the first cleaning bin 12, the fourth driving member 112 and the third auxiliary pushing rod 113 are both disposed on the fourth frame 111, and an output end of the fourth driving member 112 extends into the first cleaning bin 12 and is connected to a pushing component disposed in the first cleaning bin 12. Third auxiliary push rods 113 are further arranged on two sides of the fourth driving piece 112, and the third auxiliary push rods 113 also extend into the first cleaning bin 12 and are connected with a pushing component arranged in the second cleaning bin 13. The fourth driving piece 112 drives the pushing component to move so as to push the graphite powder in the first cleaning bin 12 into the second cleaning bin 13. In this embodiment, the fourth driving member 112 is a hydraulic cylinder. In other embodiments, the fourth drive 112 may employ a pneumatic cylinder or an electric push rod or a servo motor.
In this embodiment, during production, the graphite powder raw material loaded on the first frame 71 of the first transverse pushing module 7 is conveyed to the first frame 71 through the automatic conveying line body 18, the first driving piece 72 drives the cart 73 to move in the track, the pushing head on the cart 73 pushes the graphite crucible to move to the feeding platform 8 on the first frame 71, the second driving piece 92 of the second transverse pushing module 9 pushes the pushing head 93 and the first auxiliary push rod 94 to move forward, the pushing head 93 pushes the graphite crucible to move to the feeding platform 8, at this time, the first gate 14 of the first cleaning bin 12 is opened, the graphite crucible is pushed by the pushing head 93 to move to the first cleaning bin 12, the first gate 14 is closed, the second gate 15 is opened, the pushing part of the fourth transverse pushing module 11 pushes the graphite crucible to move to the second cleaning bin 13 in the first cleaning bin 12, the second gate 15 is closed, and the pushing part of the third transverse pushing module 10 pushes the graphite crucible to move to the preheating furnace body 1. Along with the continuous new graphite crucible entering the preheating furnace body 1, the graphite crucible positioned in front can be pushed to advance by the graphite crucible positioned in front, and the graphite crucible sequentially passes through the preheating furnace body 1, the high-temperature furnace body 2, the air cooling furnace body 3, the water cooling furnace body 4 and the automatic discharging unit, so that continuous production of lithium battery cathode material products is finally realized.
While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present utility model or equivalent embodiments using the method and technical solution disclosed above without departing from the spirit and technical solution of the present utility model. Therefore, any simple modification, equivalent substitution, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model, which do not depart from the technical solution of the present utility model, still fall within the scope of protection of the present technical solution.
Claims (10)
1. A continuous tunnel furnace system for producing lithium battery anode material, comprising: the automatic furnace comprises a furnace body unit, an automatic pushing unit, an automatic transmission line body (18), an automatic discharging mechanism (19), an automatic feeding mechanism (20) and an automatic scraping mechanism (21); the automatic feeding mechanism (20), the automatic scraping mechanism (21), the automatic pushing unit, the furnace body unit and the automatic discharging mechanism (19) are sequentially connected, and the automatic discharging mechanism (19) is connected with the automatic feeding mechanism (20) through an automatic transmission line body (18) so as to realize that the graphite crucible after discharging is conveyed to the automatic feeding mechanism (20) through the automatic transmission line body (18) for loading graphite powder; the automatic scraping mechanism (21) is used for flattening graphite powder loaded in the graphite crucible and covering a graphite pressing plate; the automatic pushing unit is used for pushing the graphite crucible covered with the pressing plate into the furnace body unit; the furnace body unit is used for realizing graphite powder graphitization to obtain the lithium battery cathode material.
2. The continuous tunnel furnace system for producing lithium battery anode material according to claim 1, wherein the furnace body unit comprises a preheating furnace body (1), a high temperature furnace body (2), an air cooling furnace body (3) and a water cooling furnace body (4) which are connected in sequence; the high-temperature furnace body (2) is used for realizing graphite powder graphitization, the air-cooled furnace body (3) and the water-cooled furnace body (4) are used for realizing graphitized graphite powder cooling, and the discharge end of the water-cooled furnace body (4) is connected with the automatic discharging mechanism (19) through the automatic transmission line body (18); the feeding end of the preheating furnace body (1) is connected with an automatic pushing unit, and the automatic pushing unit is used for conveying graphite crucibles loaded with graphite powder into the furnace body unit and sequentially circulating among the preheating furnace body (1), the high-temperature furnace body (2), the air-cooling furnace body (3) and the water-cooling furnace body (4) so as to finish continuous production of lithium battery cathode materials.
3. The continuous tunnel furnace system for producing lithium battery cathode materials according to claim 2, wherein the automatic pushing unit comprises a horizontal pushing module, a feeding platform (8) and a cleaning bin, the discharging end of the cleaning bin is connected with the feeding end of the preheating furnace body (1), the horizontal pushing module is used for pushing graphite crucible loaded with graphite powder to sequentially enter the feeding platform (8) and the cleaning bin, and pushing the cleaned graphite crucible into the preheating furnace body (1); when the horizontal pushing module continuously pushes the graphite crucible to enter the cleaning bin and the preheating furnace body (1), the graphite crucibles at adjacent positions in the furnace body unit push each other, so that the graphite crucible can circulate among the preheating furnace body (1), the high-temperature furnace body (2), the air cooling furnace body (3) and the water cooling furnace body (4) in sequence.
4. The continuous tunnel furnace system for producing lithium battery anode material according to claim 3, wherein the traverse pushing module comprises: the device comprises a first transverse pushing module (7), a second transverse pushing module (9), a third transverse pushing module (10) and a fourth transverse pushing module (11); the cleaning bin comprises a first cleaning bin (12) and a second cleaning bin (13); the first transverse pushing module (7) is arranged at the side part of the feeding platform (8) and is used for pushing the graphite crucible to the feeding platform (8); the first cleaning bin (12) and the second transverse pushing module (9) are oppositely arranged at two ends of the feeding platform (8), and the second transverse pushing module (9) is used for pushing the graphite crucible on the feeding platform (8) into the first cleaning bin (12); the fourth transverse pushing module (11) is arranged at the side part of the first cleaning bin (12) and is used for pushing the graphite crucible in the first cleaning bin (12) into the second cleaning bin (13); the third transverse pushing module (10) is located at the side of the second cleaning bin (13) and is used for pushing the graphite crucible in the second cleaning bin (13) into the preheating furnace body (1) and providing driving force for the graphite crucible to circulate among the preheating furnace body (1), the high-temperature furnace body (2), the air cooling furnace body (3) and the water cooling furnace body (4) in sequence.
5. The continuous tunnel furnace system for producing lithium battery anode material according to claim 4, wherein a first gate (14) is arranged at the joint of the feeding platform (8) and the first cleaning bin (12) so as to realize sealing and isolation between the feeding platform (8) and the first cleaning bin (12); the first gate (14) is connected with a fifth driving piece (16) so as to realize automatic opening or closing of the first gate (14);
A second gate (15) is arranged at the joint of the first cleaning bin (12) and the second cleaning bin (13) so as to realize sealing isolation between the first cleaning bin (12) and the second cleaning bin (13); the second gate (15) is connected with a sixth driving piece (17) so as to realize automatic opening or closing of the second gate (15).
6. The continuous tunnel furnace system for producing lithium battery anode material according to claim 4, characterized in that the first transversal pushing module (7) comprises a first frame (71), a first driving member (72) and a cart (73); the first frame (71) is connected with the side part of the feeding platform (8), the first driving piece (72) and the cart (73) are arranged on the first frame (71), the output end of the first driving piece (72) is connected with the cart (73), and the cart (73) pushes the graphite crucible on the first frame (71) to the feeding platform (8) under the driving of the first driving piece (72).
7. The continuous tunnel furnace system for producing lithium battery anode material according to claim 4, characterized in that the second transversal pushing module (9) comprises a second frame (91), a second driving member (92) and a pushing head (93); the second frame (91) is connected with the side of the feeding platform (8), the second driving piece (92) and the pushing head (93) are arranged on the second frame (91), the output end of the second driving piece (92) is connected with the pushing head (93), and the pushing head (93) pushes the graphite crucible on the feeding platform (8) into the first cleaning bin (12) under the driving of the second driving piece (92).
8. The continuous tunnel furnace system for producing lithium battery anode material according to claim 4, characterized in that the third transversal pushing module (10) comprises a third frame (101), a third driving member (102) and a first main pushing rod (103); the third frame (101) is connected with the side part of the second cleaning bin (13), the third driving piece (102) and the first main push rod (103) are arranged on the third frame (101), one end of the first main push rod (103) is connected with the output end of the third driving piece (102), and the other end of the first main push rod (103) extends into the second cleaning bin (13) and is connected with a pushing component arranged in the second cleaning bin (13); under the drive of the third driving piece (102), the first main push rod (103) drives the pushing component to move so as to push the graphite crucible in the second cleaning bin (13) into the preheating furnace body (1).
9. The continuous tunnel furnace system for producing lithium battery cathode materials according to claim 4, wherein the fourth transverse pushing module (11) comprises a fourth frame (111) and a fourth driving piece (112), the fourth frame (111) is connected with the side part of the first cleaning bin (12), the fourth driving piece (112) is arranged on the fourth frame (111), the output end of the fourth driving piece (112) stretches into the first cleaning bin (12) and is connected with a pushing component arranged in the first cleaning bin (12), and the fourth driving piece (112) drives the pushing component to move so as to push a graphite crucible in the first cleaning bin (12) into the second cleaning bin (13).
10. The continuous tunnel furnace system for producing lithium battery cathode materials according to any one of claims 2 to 9, wherein an air cooling assembly (5) is arranged on the air cooling furnace body (3), the air cooling assembly (5) comprises a circulating fan (51) and an air cooling pipe (52), and two ends of the air cooling pipe (52) are respectively communicated with the air cooling furnace body (3) and the circulating fan (51) so as to realize air cooling in the air cooling furnace body (3);
The water cooling furnace body (4) is provided with a water cooling assembly (6), and the water cooling assembly (6) comprises a water inlet main pipe (61), a water inlet branch pipe (62), a fin pipe (64), a water outlet branch pipe (65) and a water outlet main pipe (66); the water inlet main pipe (61) is connected with a plurality of water inlet branch pipes (62) in parallel, the water outlet main pipe (66) is connected with a plurality of water outlet branch pipes (65) in parallel, the finned tube (64) is arranged in the water cooling furnace body (4), the input end of the finned tube (64) is connected with the water inlet branch pipes (62), and the output end of the finned tube (64) is connected with the water outlet branch pipes (65).
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| CN202322664929.1U CN221223342U (en) | 2023-09-28 | 2023-09-28 | Continuous tunnel furnace system for producing lithium battery cathode material |
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| CN202322664929.1U CN221223342U (en) | 2023-09-28 | 2023-09-28 | Continuous tunnel furnace system for producing lithium battery cathode material |
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