CN117225541B - Production system and production process for grinding negative electrode material - Google Patents
Production system and production process for grinding negative electrode material Download PDFInfo
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- CN117225541B CN117225541B CN202311436265.1A CN202311436265A CN117225541B CN 117225541 B CN117225541 B CN 117225541B CN 202311436265 A CN202311436265 A CN 202311436265A CN 117225541 B CN117225541 B CN 117225541B
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- 238000000227 grinding Methods 0.000 title claims abstract description 137
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000007773 negative electrode material Substances 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 105
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims description 22
- 239000000428 dust Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 5
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 241000463219 Epitheca Species 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 238000003801 milling Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 239000010406 cathode material Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011331 needle coke Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 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
Abstract
The invention discloses a production system and a production process for grinding a negative electrode material, and particularly relates to the field of processing of lithium battery negative electrode materials; a plurality of grinding roller devices are arranged in the circumferential direction above the grinding disc device, each grinding roller device comprises a grinding roller, and the grinding rollers are positioned in a roller way; the bottom of the grinding disc device is provided with a rotary driving device which is used for driving the grinding disc device to rotate. According to the invention, the discharging position in the accommodating groove is arranged in the middle of the millstone, the edge of the accommodating groove is blocked by the isolating plate, on one hand, the height of the isolating plate can be higher, and on the other hand, the rotating speed of the millstone can be faster, so that more materials can be accommodated in the accommodating groove, more materials are crushed by the milling roller, and the inter-particle crushing amount of fine materials is more, thereby improving the grinding efficiency.
Description
Technical Field
The invention relates to the technical field of processing of negative electrode materials of lithium batteries, in particular to a production system and a production process for grinding of negative electrode materials.
Background
The cathode material determines the comprehensive performance of the lithium battery, including energy density, cycle life, ploidy, expansibility and the like, and currently, the main stream of cathode material is processed by artificial graphite (generally using needle coke), and the production procedures comprise grinding, granulating and graphitizing. The purpose of grinding is to reduce the particle size, increase the specific surface area and improve the chemical performance of the lithium battery.
The vertical mill is a dry milling device, has the characteristics of low investment cost and low running cost, and is used in a large amount. The vertical mill mainly comprises grinding roller device, mill device, selection powder machine etc. during operation, the material falls to mill central authorities from the feed opening and evenly removes from mill central authorities to the edge under the effect of centrifugal force, when the roll table grinding region of mill is passed through, receives the roll compaction of grinding roller, and bulk material is directly crushed, and fine particle material forms the material bed after receiving the extrusion and carries out the inter-particle crushing, and the material that is smashed continues to remove to mill edge, and is taken away by the strong air current of wind ring department, and great granule material drops again on the mill again and continues smashing.
In order to enable the grinding disc to contain materials so as to be ground by the grinding roller, in the prior art, the upper surface of the grinding disc is provided with a concave containing groove, and the amount of the materials generally cannot exceed the containing groove so as to prevent a large amount of materials which are not ground from being directly thrown out of the grinding disc in the rotating process of the grinding disc.
However, when the vertical mill works, severe mechanical vibration is generated, after the materials are ground by the grinding roller on the grinding disc and are crushed among grains, as the crushed particles are smaller, the fluidity is stronger, gaps among large particles are larger, and along with the mechanical vibration, the small-particle materials tend to be deposited at the bottom of the accommodating groove of the grinding disc, and the materials which are not crushed and are larger are positioned on the upper layer.
Because the crushed small-particle materials can be taken away by the strong air flow of the air ring after being thrown out from the upper edge of the millstone accommodating groove, the depth of the accommodating groove cannot be too deep, and if the accommodating groove is too deep, the small-particle materials can be accumulated at the bottom of the millstone all the time and cannot be thrown out. Therefore, in the prior art, the depth of the millstone accommodating groove is generally shallower, but if the depth of the accommodating groove is shallower, the amount of material crushed at one time by the action of the millstone roller is smaller. In addition, as the accommodating groove of the grinding disc is shallower, the rotating speed of the grinding disc cannot be too high in order to prevent the materials which are not ground from being thrown out directly, and the throwing out of the materials which are ground is affected by the lower rotating speed. Therefore, the grinding efficiency of the conventional vertical grinding mill cannot be effectively improved.
Disclosure of Invention
The invention provides a production system and a production process for grinding a negative electrode material, which aims to solve the problems that: the crushed small particle materials can be taken away by strong air flow of the air ring after being thrown out from the upper edge of the millstone accommodating groove, so that the depth of the accommodating groove cannot be too deep and the rotating speed of the millstone cannot be too high, and the grinding efficiency is low.
In order to achieve the above purpose, the present invention provides the following technical solutions: the production system for grinding the negative electrode materials comprises a shell, wherein a grinding disc device is arranged in the shell and comprises a grinding disc, an accommodating groove is formed in the upper surface of the grinding disc, and a roller way is arranged at the periphery of the grinding disc; a plurality of grinding roller devices are arranged in the circumferential direction above the grinding disc device, each grinding roller device comprises a grinding roller, and the grinding rollers are positioned in a roller way; the bottom of the millstone device is provided with a rotary driving device which is used for driving the millstone device to rotate, so that the millstone roller grinds materials in the roller way; the middle part of the millstone device is provided with a discharge hole, the bottom of the discharge hole is provided with a material throwing area, an opening of the material throwing area extends towards the side wall of the shell, a sorting assembly is arranged in the discharge hole and used for sorting the ground materials, the edge of the millstone device is fixedly provided with a separation plate which is used for separating the materials in a containing groove, the inner side of the containing groove is provided with a guide plate, one end of the guide plate is fixedly connected with the shell, and the other end of the guide plate extends to the position of the sorting assembly; the guide plate is positioned at the position of the roller way and is lower than the isolation plate, and when the millstone rotates, the guide plate guides the materials positioned at the position of the roller way to the sorting assembly.
In a preferred embodiment, the sorting assembly comprises a support, wherein the support is vertically movably arranged in the discharge hole, a screen is fixedly arranged at the upper end of the support, a movable rod is fixedly connected to the bottom of the edge of the support, the movable rod is vertically movably inserted on the millstone, and an elastic component is sleeved on the outer side of the movable rod.
In a preferred embodiment, a control device is arranged above the screen, the control device comprises an isolation cover and a linear driving part, the isolation cover is used for blocking the containing groove and the discharge hole when being covered on the screen, and the linear driving part is used for driving the isolation cover to move vertically.
In a preferred embodiment, the linear driving component comprises a straight rod, the straight rod is fixedly arranged at the upper end of the isolation cover, a rack is fixedly arranged at the upper end of the straight rod, a fixed pipe is arranged above the inner side of the shell, the rack is vertically movably inserted in the fixed pipe, a driving component II is arranged on the outer side of the shell, a gear is arranged at the output end of the driving component II, and the gear is meshed with the rack.
In a preferred embodiment, the grinding roller device further comprises a mounting frame, the mounting frame is arranged on the outer side of the shell and is rotationally connected with the shell, the upper end of the mounting frame is rotationally connected with a rotating shaft, the grinding roller is rotationally connected to the front end of the rotating shaft, and the grinding roller device further comprises a first driving component which is used for driving the mounting frame to swing up and down.
In a preferred embodiment, the shell is provided with an air cavity at a position outside the material throwing area, one side of the air cavity is provided with an air inlet, the air inlet is communicated with an air outlet of the air heater, an air ring is arranged between the outer wall of the grinding disc and the inner wall of the shell, and hot air blown by the air heater is blown upwards through the air cavity and the air ring in sequence.
In a preferred embodiment, the production system further comprises a separator, the separator comprises an upper shell, the upper shell is fixedly arranged at the top of the shell, a discharging pipe is fixedly arranged in the middle of the upper shell, a plurality of transverse pipes are arranged on the outer side wall of the discharging pipe, an air duct component in one-to-one correspondence with the transverse pipes is arranged between the upper shell and the discharging pipe, and the air duct component is communicated with the transverse pipes.
In a preferred embodiment, the wind barrel assembly comprises a barrel body which is transversely arranged, a plurality of blades are arranged in the circumferential direction of the barrel body, gaps are reserved between the adjacent blades, a driving part III is arranged on the outer side of the upper shell, one end of the barrel body is fixedly connected with the output end of the driving part III, and the other end of the barrel body is rotationally connected with the transverse tube.
In a preferred embodiment, the production system further comprises a first external classification device, a second external classification device, a pulse dust collector and a high-pressure centrifugal fan, wherein an air inlet of the first external classification device is communicated with the inside of the shell, an air outlet of the first external classification device is communicated with an air inlet of the second external classification device, a discharge port of the first external classification device is communicated with a feed port on the shell, an air outlet of the second external classification device is communicated with an air inlet of the pulse dust collector, and an air outlet of the pulse dust collector is communicated with an air inlet of the high-pressure centrifugal fan.
The invention also provides a grinding production process of the cathode material, which comprises the following steps:
firstly, adding materials into a containing groove, driving a grinding disc to rotate through a rotary driving device, and grinding the materials under the action of a roller way and a grinding roller;
in the first step, along with the rotation of the millstone, the material is guided to the sorting assembly by the guide plate, so that the ground material is discharged through the sorting assembly, the discharge hole and the material throwing area;
And thirdly, blowing hot air by the hot air blower, and upwards blowing the hot air through an air ring, so that the ground materials discharged from the material throwing area are upwards blown out of the shell and discharged.
The invention has the technical effects and advantages that: according to the invention, the discharging position in the accommodating groove is arranged in the middle of the millstone, the edge of the accommodating groove is blocked by the isolating plate, on one hand, the height of the isolating plate can be higher, and on the other hand, the rotating speed of the millstone can be faster, so that more materials can be accommodated in the accommodating groove, more materials are crushed by the milling roller, and the inter-particle crushing amount of fine materials is more, thereby improving the grinding efficiency.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic cross-sectional view of the overall structure of the present invention.
Fig. 3 is a schematic view of a grinding disc device and a grinding roller device of the present invention.
Fig. 4 is a schematic view of the abrasive disc apparatus and isolation cover of the present invention.
Fig. 5 is a schematic diagram of a grinding disc device and an isolation cover of the present invention.
Fig. 6 is a schematic cross-sectional view of a partial structure of the present invention.
Fig. 7 is an enlarged view of a portion of fig. 6 a in accordance with the present invention.
Fig. 8 is a schematic view of a sorting assembly and isolation cap of the present invention.
Fig. 9 is an exploded view of fig. 8 in accordance with the present invention.
Fig. 10 is a partial enlarged view of the present invention at B in fig. 2.
Fig. 11 is a cross-sectional view of a separator of the present invention.
FIG. 12 is a schematic diagram of a process system according to the present invention.
Fig. 13 is a flow chart of the production process of the present invention.
The reference numerals are: 1. a housing; 10. a rotation driving device; 11. a feed inlet; 2. a millstone device; 20. a sorting assembly; 201. a bracket; 202. a screen; 203. a movable rod; 204. an elastic member; 21. grinding disc; 22. a receiving groove; 23. a roller way; 24. a discharge port; 25. a material throwing area; 26. a partition plate; 27. a deflector; 3. a grinding roller device; 31. a mounting frame; 32. a rotating shaft; 33. grinding roller; 34. a first driving part; 4. a control device; 41. an isolation cover; 42. a linear driving part; 421. a straight rod; 422. a rack; 423. a fixed tube; 424. a second driving part; 425. a gear; 5. a wind chamber; 51. an air inlet; 52. a wind ring; 6. a separator; 61. an upper case; 62. a discharge pipe; 621. a transverse tube; 63. a wind barrel assembly; 631. a cylinder; 632. a blade; 633. a third driving part; 7. a first external classification device; 71. a second external grading device; 72. a pulse dust collector; 73. high-pressure centrifugal fan.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-13 of the specification, a production system for grinding negative electrode materials comprises a shell 1, wherein a grinding disc device 2 is arranged in the shell 1, the grinding disc device 2 comprises a grinding disc 21, an accommodating groove 22 is formed in the upper surface of the grinding disc 21, and a roller way 23 is arranged on the periphery of the grinding disc 21; a plurality of grinding roller devices 3 are arranged above the grinding disc device 2 in the circumferential direction, the grinding roller devices 3 comprise grinding rollers 33, and the grinding rollers 33 are positioned in the roller way 23; the bottom of the millstone device 2 is provided with a rotary driving device 10, and the rotary driving device 10 is used for driving the millstone device 2 to rotate, so that the milling roller 33 grinds the materials in the roller way 23.
The middle part of mill device 2 has been seted up discharge gate 24, the bottom of discharge gate 24 is provided with gets rid of material district 25, get rid of the direction extension of material district 25 to casing 1 lateral wall, be provided with in the discharge gate 24 and select separately subassembly 20, select separately subassembly 20 is used for selecting separately the material after the grinding, the fixed mounting in edge of mill device 2 has division board 26, division board 26 is used for separating the material in holding tank 22, the holding tank 22 inboard is provided with guide plate 27, one end and casing 1 fixed connection of guide plate 27, the other end of guide plate 27 extends to the position of selecting separately subassembly 20.
The height of the deflector 27 at the position of the roller table 23 is lower than that of the separator 26, and when the grinding disc 21 rotates, the deflector 27 guides the material at the position of the roller table 23 to the sorting assembly 20.
The rotation driving device 10 adopts a gear motor, an output shaft of which is connected with the bottom of the grinding disc 21 to drive the grinding disc 21 to rotate, a feed port 11 is provided on the side wall of the housing 1, and a material (for example, needle coke) can be added from the feed port 11 into the accommodating groove 22. The separating plate 26 serves to separate the material from the interior of the receiving groove 22 during grinding, i.e. to prevent the material from being discharged or thrown off the edge of the grinding disc 21. The middle part of the millstone 21 is provided with a discharge hole 24 and the bottom of the discharge hole 24 is provided with a material throwing area 25, so that the ground materials are discharged from the positions of the discharge hole 24 and the material throwing area 25, the position of the discharge hole 24 is provided with a sorting assembly 20, the sorting assembly 20 can be a screening net, the ground materials can be discharged from the screening net, and the materials which are not ground are continuously left in the accommodating groove 22 to be ground.
In the above technical solution, the grinding roller device 3 includes, in addition to the grinding roller 33, specifically, the grinding roller device 3 further includes a mounting frame 31, the mounting frame 31 is disposed on the outer side of the housing 1 and is rotationally connected with the housing 1, the upper end of the mounting frame 31 is rotationally connected with a rotating shaft 32, the grinding roller 33 is rotationally connected with the front end of the rotating shaft 32, the grinding roller device 3 further includes a first driving component 34, and the first driving component 34 is used for driving the mounting frame 31 to swing up and down.
It should be noted that, as shown in fig. 1, the mounting frame 31 is configured in a tripod shape, the bottom of the mounting frame is rotatably connected with the housing 1, the rotating shaft 32 is disposed at the upper end of the mounting frame 31 and extends to the interior of the housing 1, and the position where the rotating shaft 32 passes through the housing 1 can be sealed by using an elastic rubber sleeve, so as to prevent dust in the housing 1 from being discharged from the position to cause pollution. In the above technical solution, the first driving component 34 may be a hydraulic cylinder, the fixed end of the hydraulic cylinder is hinged to the housing 1, and the output end of the hydraulic cylinder is hinged to the mounting frame 31, and the mounting frame 31 is driven to swing up and down by telescopic action of the hydraulic cylinder, so that the grinding roller 33 swings up and down in the roller way 23 to grind the material located at the position of the roller way 23.
In a specific implementation scenario: firstly, continuously adding materials into a containing groove 22 from a feed inlet 11, driving a grinding disc 21 to rotate by a rotary driving device 10, and driving a grinding roller 33 to swing up and down at a small angle by a driving part I34 in the process, so that the materials in a roller way 23 can be ground by the rotation of the grinding roller 33 and the grinding disc 21; during the rotation of the grinding disc 21, the guide plate 27 is kept still, so that the guide plate 27 can push the material at the roller way 23 to the middle part of the accommodating groove 22, namely to the position of the sorting assembly 20; the ground material is then discharged from the sorting module 20, the discharge opening 24 and the material discharge area 25 in this order. In the above technical scheme, the discharging position in the holding tank 22 is arranged in the middle of the millstone 21, and the edge of the holding tank 22 is blocked by the isolating plate 26, so that on one hand, the height of the isolating plate 26 is higher, more materials can be held in the holding tank 22 to improve grinding efficiency, on the other hand, the rotating speed of the millstone 21 can be faster, and when the rotating speed is faster, the materials which are not ground can not be thrown out from the position of the isolating plate 26 as long as the quantity of the materials is reasonably controlled due to the blocking of the isolating plate 26. Since the height of the partition plate 26 can be set higher and the rotation speed of the grinding disc 21 can be made faster, the amount of the fine-grained material to be crushed between grains is increased and the grinding efficiency is improved.
It should be noted that, the height of the guide plate 27 at the position of the roller table 23 is lower than that of the isolation plate 26, and the height of the guide plate is preferably flush with the upper edge of the roller table 23, so as to prevent the problem that the material at the position of the grinding roller 33 is insufficient due to the guide of the guide plate 27 during the rotation of the grinding disc 21.
Referring to fig. 1-10 of the specification, another structural arrangement form of a sorting assembly 20 is provided herein, specifically, the sorting assembly 20 includes a support 201, the support 201 is vertically movably disposed in a discharge hole 24, a screen 202 is fixedly mounted at the upper end of the support 201, a movable rod 203 is fixedly connected to the bottom of the edge of the support 201, the movable rod 203 is vertically movably inserted on a grinding disc 21, and an elastic component 204 is sleeved on the outer side of the movable rod 203.
The elastic member 204 is a compression spring, and the support 201 and the screen 202 may vibrate up and down along with the apparatus during grinding, and the main sources of the apparatus vibration are vibration generated during grinding and vibration generated during up and down swinging of the grinding roller 33. The vibration of the screen 202 can improve the passing efficiency of the ground material.
Further, a control device 4 is arranged above the screen 202, the control device 4 comprises an isolation cover 41 and a linear driving part 42, the isolation cover 41 is used for blocking the containing groove 22 and the discharge hole 24 when being covered on the screen 202, and the linear driving part 42 is used for driving the isolation cover 41 to move vertically.
The linear driving member 42 may be a cylinder, an electric push rod, or the like. When the device is used for grinding for a period of time T1, the ground fine materials are basically positioned at the lower layer, and the non-ground materials are positioned at the upper layer, at the moment, the linear driving part 42 drives the isolation cover 41 to move upwards for a certain distance so as to open the screen 202, then the fine materials can be discharged from the screen 202, and after the period of time T2, the linear driving part 42 drives the isolation cover 41 to move downwards so as to close the screen 202 again. This is repeated, on the one hand, to increase the amount of fine material in the holding tank 22, to increase the inter-particle crushing time of the fine material, to make the inter-particle crushing more sufficient, and on the other hand, to greatly reduce the contact between the coarse material and the screen 202, and to prevent clogging of the screen 202. The time T1 and T2 are preset values in advance.
Further, another structural arrangement form of the linear driving component 42 is provided herein, specifically, the linear driving component 42 includes a straight rod 421, the straight rod 421 is fixedly installed at the upper end of the isolation cover 41, a rack 422 is fixedly installed at the upper end of the straight rod 421, a fixed pipe 423 is installed above the inner side of the housing 1, the rack 422 is vertically movably inserted into the fixed pipe 423, a second driving component 424 is installed at the outer side of the housing 1, a gear 425 is installed at the output end of the second driving component 424, and the gear 425 is meshed with the rack 422.
It should be noted that, the second driving member 424 adopts a motor, and the gear 425 is driven by the motor to rotate, and the gear 425 drives the straight rod 421 and the rack 422 to move up and down, so as to drive the isolation cover 41 to move up and down.
Referring to fig. 1-11 of the specification, a wind cavity 5 is arranged at a position of the shell 1, which is located outside the material throwing area 25, one side of the wind cavity 5 is provided with a wind inlet 51, the wind inlet 51 is communicated with a wind outlet of a hot air blower, a wind ring 52 is arranged between the outer wall of the grinding disc 21 and the inner wall of the shell 1, and hot wind blown by the hot air blower is blown upwards through the wind cavity 5 and the wind ring 52 in sequence.
It should be noted that, the material discharged from the material throwing area 25 may flow upward along with the hot air, and finally be discharged from the upper end of the casing 1, and the hot air may also play a role in drying the material.
Further, the production system further comprises a separator 6, the separator 6 comprises an upper shell 61, the upper shell 61 is fixedly arranged at the top of the shell 1, a discharging pipe 62 is fixedly arranged in the middle of the upper shell 61, a plurality of transverse pipes 621 are arranged on the outer side walls of the discharging pipes 62, air duct assemblies 63 which are in one-to-one correspondence with the transverse pipes 621 are arranged between the upper shell 61 and the discharging pipes 62, and the air duct assemblies 63 are communicated with the transverse pipes 621.
Still further, the air duct assembly 63 includes a cylinder 631 disposed transversely, a plurality of blades 632 are disposed in a circumferential direction of the cylinder 631, gaps are provided between adjacent blades 632, a third driving member 633 is mounted on an outer side of the upper case 61, one end of the cylinder 631 is fixedly connected to an output end of the third driving member 633, and the other end of the cylinder 631 is rotatably connected to the transverse tube 621.
The interior of the shell 1 is communicated with the interior of the cylinder 631, the transverse pipe 621 and the discharge pipe 62 in order, and when the material is blown up by hot air, the qualified fine material can pass through the gap at the vane 632 and be discharged from the discharge pipe 62. The hot air flows upwards, the wind force is reduced when the hot air approaches the position of the air duct assembly 63, and the hot air can collide with materials in the process of driving the blades 632 to rotate by the driving part III 633, so that unqualified coarse materials can fall into the accommodating groove 22 again, wherein the driving part III 633 adopts a motor.
Referring to fig. 1-12 of the specification, the production system further comprises a first external grading device 7, a second external grading device 71, a pulse dust collector 72 and a high-pressure centrifugal fan 73, wherein an air inlet of the first external grading device 7 is communicated with the inside of the shell 1, an air outlet of the first external grading device 7 is communicated with an air inlet of the second external grading device 71, a discharge hole of the first external grading device 7 is communicated with a feed inlet 11 on the shell 1, an air outlet of the second external grading device 71 is communicated with an air inlet of the pulse dust collector 72, and an air outlet of the pulse dust collector 72 is communicated with an air inlet of the high-pressure centrifugal fan 73.
The first external classification device 7 and the second external classification device 71 may use an air classifier, the ground materials in the shell 1 are discharged from the discharge pipe 62 and sequentially enter the first external classification device 7 and the second external classification device 71 to perform external classification twice, coarse powder obtained by the first external classification returns to the shell 1 from the discharge hole to continue grinding, after the second external classification, qualified finished products are discharged and collected from the discharge hole of the second external classification device 71, fine powder (tailing) enters the pulse dust collector 72 to be collected, and purified air is discharged into the atmosphere.
The system has no cyclone separating bin, and the cyclone separating bin is fixed equipment and is not easy to control; the granularity range of the finished product of the material is doubly regulated by utilizing two external grading, so that the granularity range of the collected finished product is more concentrated; the coarse powder of the first external classification is returned to grinding again, so that the yield of finished products can be improved, and the problem that different materials have high collection requirements on a cyclone separation bin is solved.
Referring to fig. 1-13 of the specification, a grinding production process of a cathode material comprises the following steps:
Firstly, adding materials into a containing groove 22, driving a grinding disc 21 to rotate through a rotary driving device 10, and grinding the materials under the action of a roller way 23 and a grinding roller 33;
in the second step, along with the rotation of the grinding disc 21, the material is guided by the guide plate 27 towards the direction of the sorting assembly 20, so that the ground material is discharged through the sorting assembly 20, the discharge hole 24 and the material throwing area 25;
and thirdly, hot air is blown out by the hot air blower and is upwards blown through the air ring 52, so that the ground materials discharged from the material throwing area 25 are upwards blown out of the shell 1 and discharged.
The whole grinding process is completed by adding the material from the feed port 11, grinding the material by the grinding disc 21 and the grinding roller 33, and discharging the material by blowing hot air by the hot air blower.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A production system for grinding negative electrode materials is characterized in that: the grinding disc device comprises a shell (1), wherein a grinding disc device (2) is arranged in the shell (1), the grinding disc device (2) comprises a grinding disc (21), an accommodating groove (22) is formed in the upper surface of the grinding disc (21), and a roller way (23) is arranged on the periphery of the grinding disc (21); a plurality of grinding roller devices (3) are arranged above the grinding disc device (2) in the circumferential direction, the grinding roller devices (3) comprise grinding rollers (33), and the grinding rollers (33) are positioned in the roller way (23); the bottom of the millstone device (2) is provided with a rotary driving device (10), and the rotary driving device (10) is used for driving the millstone device (2) to rotate so as to enable the millstone roller (33) to grind materials in the roller way (23);
The grinding disc device is characterized in that a discharge hole (24) is formed in the middle of the grinding disc device (2), a material throwing area (25) is formed in the bottom of the discharge hole (24), an opening of the material throwing area (25) extends towards the side wall of the shell (1), a sorting assembly (20) is arranged in the discharge hole (24), the sorting assembly (20) is used for sorting ground materials, a separation plate (26) is fixedly arranged at the edge of the grinding disc device (2), the separation plate (26) is used for separating the materials in a containing groove (22), a guide plate (27) is arranged on the inner side of the containing groove (22), one end of the guide plate (27) is fixedly connected with the shell (1), and the other end of the guide plate (27) extends to the position of the sorting assembly (20);
The height of the guide plate (27) at the position of the roller way (23) is lower than that of the isolation plate (26), and when the millstone (21) rotates, the guide plate (27) guides materials at the position of the roller way (23) to the sorting assembly (20).
2. The production system for grinding a negative electrode material according to claim 1, characterized in that: the sorting assembly (20) comprises a support (201), the support (201) is vertically movably arranged in a discharge hole (24), a screen (202) is fixedly arranged at the upper end of the support (201), a movable rod (203) is fixedly connected to the bottom of the edge of the support (201), the movable rod (203) is vertically movably inserted on a grinding disc (21), and an elastic component (204) is sleeved on the outer side of the movable rod (203).
3. The production system for grinding a negative electrode material according to claim 2, characterized in that: the control device is characterized in that a control device (4) is arranged above the screen (202), the control device (4) comprises an isolation cover (41) and a linear driving component (42), the isolation cover (41) blocks the containing groove (22) and the discharge hole (24) when being covered on the screen (202), and the linear driving component (42) is used for driving the isolation cover (41) to move vertically.
4. A production system for grinding a negative electrode material according to claim 3, characterized in that: the linear driving component (42) comprises a straight rod (421), the straight rod (421) is fixedly arranged at the upper end of the isolation cover (41), a rack (422) is fixedly arranged at the upper end of the straight rod (421), a fixed pipe (423) is arranged above the inner side of the shell (1), the rack (422) is vertically movably inserted into the fixed pipe (423), a driving component II (424) is arranged at the outer side of the shell (1), a gear (425) is arranged at the output end of the driving component II (424), and the gear (425) is meshed with the rack (422).
5. The production system for grinding a negative electrode material according to claim 1, characterized in that: the grinding roller device (3) further comprises a mounting frame (31), the mounting frame (31) is arranged on the outer side of the shell (1) and is rotationally connected with the shell (1), a rotating shaft (32) is rotationally connected to the upper end of the mounting frame (31), the grinding roller (33) is rotationally connected to the front end of the rotating shaft (32), the grinding roller device (3) further comprises a first driving component (34), and the first driving component (34) is used for driving the mounting frame (31) to swing up and down.
6. The production system for grinding a negative electrode material according to claim 1, characterized in that: the utility model discloses a hot air blower, including casing (1), mill, air inlet (51), air ring (52) are provided with in the position department that casing (1) is located the material district (25) outside of getting rid of, one side of air chamber (5) is provided with air inlet (51), air inlet (51) intercommunication air heater's air outlet, be provided with between the outer wall of mill (21) and the inner wall of casing (1) wind ring (52), the hot-blast of air heater blowout is upwards blown out through air chamber (5), wind ring (52) in proper order.
7. The production system for grinding a negative electrode material according to claim 1, characterized in that: the production system further comprises a separator (6), the separator (6) comprises an upper shell (61), the upper shell (61) is fixedly arranged at the top of the shell (1), a discharging pipe (62) is fixedly arranged in the middle of the upper shell (61), a plurality of transverse pipes (621) are arranged on the outer side wall of the discharging pipe (62), an air duct component (63) in one-to-one correspondence with the transverse pipes (621) is arranged between the upper shell (61) and the discharging pipe (62), and the air duct component (63) is communicated with the transverse pipes (621).
8. The production system for grinding a negative electrode material according to claim 7, characterized in that: the dryer subassembly (63) is including barrel (631) of horizontal setting, a plurality of blades (632) are arranged to the circumferencial direction of barrel (631), adjacent have the clearance between blade (632), drive part three (633) are installed to the outside of epitheca (61), the one end and the output fixed connection of drive part three (633) of barrel (631), the other end and the violently pipe (621) of barrel (631) rotate to be connected.
9. The production system for grinding a negative electrode material according to claim 1, characterized in that: the production system further comprises a first outer grading device (7), a second outer grading device (71), a pulse dust collector (72) and a high-pressure centrifugal fan (73), wherein an air inlet of the first outer grading device (7) is communicated with the inside of the shell (1), an air outlet of the first outer grading device (7) is communicated with an air inlet of the second outer grading device (71), a discharge hole of the first outer grading device (7) is communicated with a feed inlet (11) on the shell (1), an air outlet of the second outer grading device (71) is communicated with an air inlet of the pulse dust collector (72), and an air outlet of the pulse dust collector (72) is communicated with an air inlet of the high-pressure centrifugal fan (73).
10. A process for producing grinding a negative electrode material, using the production system for grinding a negative electrode material according to claim 6, comprising the steps of:
Firstly, adding materials into a containing groove (22), driving a millstone (21) to rotate through a rotary driving device (10), and grinding the materials under the action of a roller way (23) and a grinding roller (33);
In the first step, along with the rotation of the millstone (21), the material is guided by the guide plate (27) towards the direction of the sorting assembly (20), so that the ground material is discharged through the sorting assembly (20), the discharge port (24) and the material throwing area (25);
And thirdly, blowing hot air by the hot air blower, and upwards blowing the hot air through the air ring (52), so that the ground materials discharged from the material throwing area (25) are upwards blown out of the shell (1) and discharged.
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| CN202311436265.1A CN117225541B (en) | 2023-10-31 | 2023-10-31 | Production system and production process for grinding negative electrode material |
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| CN202311436265.1A CN117225541B (en) | 2023-10-31 | 2023-10-31 | Production system and production process for grinding negative electrode material |
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| CN117225541B true CN117225541B (en) | 2024-04-19 |
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| WO2015051925A1 (en) * | 2014-03-21 | 2015-04-16 | Loesche Gmbh | Method and device for preparing and separating a material from a combined multicomponent system |
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| CN217120426U (en) * | 2022-04-02 | 2022-08-05 | 天津水泥工业设计研究院有限公司 | Built-in flow guide mechanism based on vertical roller mill |
| CN114985059A (en) * | 2022-06-16 | 2022-09-02 | 中信重工机械股份有限公司 | Completely-limited progressive partition type vertical abrasive bed |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10317437A1 (en) * | 2003-04-15 | 2004-10-28 | Babcock Borsig Power Systems Gmbh | Cylinder mill or bowl mill crusher has gas inlet gap formed as nozzle ring, with nozzles having axial and tangential outlet direction, and annular gap between mill housing and partition has equal width over whole vertical height |
| WO2015051925A1 (en) * | 2014-03-21 | 2015-04-16 | Loesche Gmbh | Method and device for preparing and separating a material from a combined multicomponent system |
| CN204866115U (en) * | 2015-06-19 | 2015-12-16 | 中材装备集团有限公司 | Wet upright crocus of coal -fired slag of arranging grinds drying system |
| CN106000552A (en) * | 2016-07-01 | 2016-10-12 | 桂林晟兴机械制造有限公司 | Vertical outer circulation pulverizer |
| CN217120426U (en) * | 2022-04-02 | 2022-08-05 | 天津水泥工业设计研究院有限公司 | Built-in flow guide mechanism based on vertical roller mill |
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| CN117225541A (en) | 2023-12-15 |
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